* Add vendor dir so builds dont require dep * Pin specific version go-eth version
This commit is contained in:
Matt K
GitHub
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txscript
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========
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[](https://travis-ci.org/btcsuite/btcd)
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[](http://copyfree.org)
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[](http://godoc.org/github.com/btcsuite/btcd/txscript)
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Package txscript implements the bitcoin transaction script language. There is
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a comprehensive test suite.
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This package has intentionally been designed so it can be used as a standalone
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package for any projects needing to use or validate bitcoin transaction scripts.
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## Bitcoin Scripts
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Bitcoin provides a stack-based, FORTH-like language for the scripts in
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the bitcoin transactions. This language is not turing complete
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although it is still fairly powerful. A description of the language
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can be found at https://en.bitcoin.it/wiki/Script
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## Installation and Updating
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```bash
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$ go get -u github.com/btcsuite/btcd/txscript
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```
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## Examples
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* [Standard Pay-to-pubkey-hash Script](http://godoc.org/github.com/btcsuite/btcd/txscript#example-PayToAddrScript)
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Demonstrates creating a script which pays to a bitcoin address. It also
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prints the created script hex and uses the DisasmString function to display
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the disassembled script.
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* [Extracting Details from Standard Scripts](http://godoc.org/github.com/btcsuite/btcd/txscript#example-ExtractPkScriptAddrs)
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Demonstrates extracting information from a standard public key script.
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* [Manually Signing a Transaction Output](http://godoc.org/github.com/btcsuite/btcd/txscript#example-SignTxOutput)
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Demonstrates manually creating and signing a redeem transaction.
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## GPG Verification Key
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All official release tags are signed by Conformal so users can ensure the code
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has not been tampered with and is coming from the btcsuite developers. To
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verify the signature perform the following:
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- Download the public key from the Conformal website at
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https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt
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- Import the public key into your GPG keyring:
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```bash
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gpg --import GIT-GPG-KEY-conformal.txt
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```
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- Verify the release tag with the following command where `TAG_NAME` is a
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placeholder for the specific tag:
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```bash
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git tag -v TAG_NAME
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```
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## License
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Package txscript is licensed under the [copyfree](http://copyfree.org) ISC
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License.
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+13
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// Copyright (c) 2015-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package txscript
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const (
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// LockTimeThreshold is the number below which a lock time is
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// interpreted to be a block number. Since an average of one block
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// is generated per 10 minutes, this allows blocks for about 9,512
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// years.
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LockTimeThreshold = 5e8 // Tue Nov 5 00:53:20 1985 UTC
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)
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+8
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The json files in this directory come from the bitcoind project
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(https://github.com/bitcoin/bitcoin) and is released under the following
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license:
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Copyright (c) 2012-2014 The Bitcoin Core developers
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Distributed under the MIT/X11 software license, see the accompanying
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file COPYING or http://www.opensource.org/licenses/mit-license.php.
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+2609
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[
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["raw_transaction, script, input_index, hashType, signature_hash (result)"],
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["907c2bc503ade11cc3b04eb2918b6f547b0630ab569273824748c87ea14b0696526c66ba740200000004ab65ababfd1f9bdd4ef073c7afc4ae00da8a66f429c917a0081ad1e1dabce28d373eab81d8628de802000000096aab5253ab52000052ad042b5f25efb33beec9f3364e8a9139e8439d9d7e26529c3c30b6c3fd89f8684cfd68ea0200000009ab53526500636a52ab599ac2fe02a526ed040000000008535300516352515164370e010000000003006300ab2ec229", "", 2, 1864164639, "31af167a6cf3f9d5f6875caa4d31704ceb0eba078d132b78dab52c3b8997317e"],
|
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["a0aa3126041621a6dea5b800141aa696daf28408959dfb2df96095db9fa425ad3f427f2f6103000000015360290e9c6063fa26912c2e7fb6a0ad80f1c5fea1771d42f12976092e7a85a4229fdb6e890000000001abc109f6e47688ac0e4682988785744602b8c87228fcef0695085edf19088af1a9db126e93000000000665516aac536affffffff8fe53e0806e12dfd05d67ac68f4768fdbe23fc48ace22a5aa8ba04c96d58e2750300000009ac51abac63ab5153650524aa680455ce7b000000000000499e50030000000008636a00ac526563ac5051ee030000000003abacabd2b6fe000000000003516563910fb6b5", "65", 0, -1391424484, "48d6a1bd2cd9eec54eb866fc71209418a950402b5d7e52363bfb75c98e141175"],
|
||||
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||||
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|
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|
||||
["fd878840031e82fdbe1ad1d745d1185622b0060ac56638290ec4f66b1beef4450817114a2c0000000009516a63ab53650051abffffffff37b7a10322b5418bfd64fb09cd8a27ddf57731aeb1f1f920ffde7cb2dfb6cdb70300000008536a5365ac53515369ecc034f1594690dbe189094dc816d6d57ea75917de764cbf8eccce4632cbabe7e116cd0100000003515352ffffffff035777fc000000000003515200abe9140300000000050063005165bed6d10200000000076300536363ab65195e9110", "635265", 0, 1729787658, "6e3735d37a4b28c45919543aabcb732e7a3e1874db5315abb7cc6b143d62ff10"],
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|
||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
["cb3178520136cd294568b83bb2520f78fecc507898f4a2db2674560d72fd69b9858f75b3b502000000066aac00515100ffffffff03ab005a01000000000563526363006e3836030000000001abfbda3200000000000665ab0065006500000000", "ab516a0063006a5300", 0, 1182109299, "2149e79c3f4513da4e4378608e497dcfdfc7f27c21a826868f728abd2b8a637a"],
|
||||
["18a4b0c004702cf0e39686ac98aab78ad788308f1d484b1ddfe70dc1997148ba0e28515c310300000000ffffffff05275a52a23c59da91129093364e275da5616c4070d8a05b96df5a2080ef259500000000096aac51656a6aac53ab66e64966b3b36a07dd2bb40242dd4a3743d3026e7e1e0d9e9e18f11d068464b989661321030000000265ac383339c4fae63379cafb63b0bab2eca70e1f5fc7d857eb5c88ccd6c0465093924bba8b2a000000000300636ab5e0545402bc2c4c010000000000cd41c002000000000000000000", "abac635253656a00", 3, 2052372230, "32db877b6b1ca556c9e859442329406f0f8246706522369839979a9f7a235a32"],
|
||||
["1d9c5df20139904c582285e1ea63dec934251c0f9cf5c47e86abfb2b394ebc57417a81f67c010000000353515222ba722504800d3402000000000353656a3c0b4a0200000000000fb8d20500000000076300ab005200516462f30400000000015200000000", "ab65", 0, -210854112, "edf73e2396694e58f6b619f68595b0c1cdcb56a9b3147845b6d6afdb5a80b736"],
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|
||||
["fea256ce01272d125e577c0a09570a71366898280dda279b021000db1325f27edda41a53460100000002ab53c752c21c013c2b3a01000000000000000000", "65", 0, 1145543262, "076b9f844f6ae429de228a2c337c704df1652c292b6c6494882190638dad9efd"]
|
||||
]
|
||||
+338
@@ -0,0 +1,338 @@
|
||||
[
|
||||
["The following are deserialized transactions which are invalid."],
|
||||
["They are in the form"],
|
||||
["[[[prevout hash, prevout index, prevout scriptPubKey, amount?], [input 2], ...],"],
|
||||
["serializedTransaction, verifyFlags]"],
|
||||
["Objects that are only a single string (like this one) are ignored"],
|
||||
|
||||
["0e1b5688cf179cd9f7cbda1fac0090f6e684bbf8cd946660120197c3f3681809 but with extra junk appended to the end of the scriptPubKey"],
|
||||
[[["6ca7ec7b1847f6bdbd737176050e6a08d66ccd55bb94ad24f4018024107a5827", 0, "0x41 0x043b640e983c9690a14c039a2037ecc3467b27a0dcd58f19d76c7bc118d09fec45adc5370a1c5bf8067ca9f5557a4cf885fdb0fe0dcc9c3a7137226106fbc779a5 CHECKSIG VERIFY 1"]],
|
||||
"010000000127587a10248001f424ad94bb55cd6cd6086a0e05767173bdbdf647187beca76c000000004948304502201b822ad10d6adc1a341ae8835be3f70a25201bbff31f59cbb9c5353a5f0eca18022100ea7b2f7074e9aa9cf70aa8d0ffee13e6b45dddabf1ab961bda378bcdb778fa4701ffffffff0100f2052a010000001976a914fc50c5907d86fed474ba5ce8b12a66e0a4c139d888ac00000000", "P2SH"],
|
||||
|
||||
["This is the nearly-standard transaction with CHECKSIGVERIFY 1 instead of CHECKSIG from tx_valid.json"],
|
||||
["but with the signature duplicated in the scriptPubKey with a non-standard pushdata prefix"],
|
||||
["See FindAndDelete, which will only remove if it uses the same pushdata prefix as is standard"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x4c 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a01"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006a473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Same as above, but with the sig in the scriptSig also pushed with the same non-standard OP_PUSHDATA"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x4c 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a01"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006b4c473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["This is the nearly-standard transaction with CHECKSIGVERIFY 1 instead of CHECKSIG from tx_valid.json"],
|
||||
["but with the signature duplicated in the scriptPubKey with a different hashtype suffix"],
|
||||
["See FindAndDelete, which will only remove if the signature, including the hash type, matches"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a81"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006a473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["An invalid P2SH Transaction"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x7a052c840ba73af26755de42cf01cc9e0a49fef0 EQUAL"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000009085768617420697320ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Tests for CheckTransaction()"],
|
||||
["No inputs"],
|
||||
["Skipped because this is not checked by btcscript, this is a problem for chain."],
|
||||
|
||||
["No outputs"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x05ab9e14d983742513f0f451e105ffb4198d1dd4 EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006d483045022100f16703104aab4e4088317c862daec83440242411b039d14280e03dd33b487ab802201318a7be236672c5c56083eb7a5a195bc57a40af7923ff8545016cd3b571e2a601232103c40e5d339df3f30bf753e7e04450ae4ef76c9e45587d1d993bdc4cd06f0651c7acffffffff0000000000", "P2SH"],
|
||||
|
||||
["Negative output"],
|
||||
["Removed because btcscript doesn't do tx sanity checking."],
|
||||
|
||||
["MAX_MONEY + 1 output"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x32afac281462b822adbec5094b8d4d337dd5bd6a EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006e493046022100e1eadba00d9296c743cb6ecc703fd9ddc9b3cd12906176a226ae4c18d6b00796022100a71aef7d2874deff681ba6080f1b278bac7bb99c61b08a85f4311970ffe7f63f012321030c0588dc44d92bdcbf8e72093466766fdc265ead8db64517b0c542275b70fffbacffffffff010140075af0750700015100000000", "P2SH"],
|
||||
|
||||
["MAX_MONEY output + 1 output"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0xb558cbf4930954aa6a344363a15668d7477ae716 EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006d483045022027deccc14aa6668e78a8c9da3484fbcd4f9dcc9bb7d1b85146314b21b9ae4d86022100d0b43dece8cfb07348de0ca8bc5b86276fa88f7f2138381128b7c36ab2e42264012321029bb13463ddd5d2cc05da6e84e37536cb9525703cfd8f43afdb414988987a92f6acffffffff020040075af075070001510001000000000000015100000000", "P2SH"],
|
||||
|
||||
["Duplicate inputs"],
|
||||
["Removed because btcscript doesn't check input duplication, btcchain does"],
|
||||
|
||||
["Coinbase of size 1"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
["Removed because btcscript doesn't handle coinbase checking, btcchain does"],
|
||||
|
||||
["Coinbase of size 101"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
["Removed because btcscript doesn't handle coinbase checking, btcchain does"],
|
||||
|
||||
["Null txin"],
|
||||
["Removed because btcscript doesn't do tx sanity checking."],
|
||||
|
||||
["Same as the transactions in valid with one input SIGHASH_ALL and one SIGHASH_ANYONECANPAY, but we set the _ANYONECANPAY sequence number, invalidating the SIGHASH_ALL signature"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"],
|
||||
["0000000000000000000000000000000000000000000000000000000000000200", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"]],
|
||||
"01000000020001000000000000000000000000000000000000000000000000000000000000000000004948304502203a0f5f0e1f2bdbcd04db3061d18f3af70e07f4f467cbc1b8116f267025f5360b022100c792b6e215afc5afc721a351ec413e714305cb749aae3d7fee76621313418df10101000000000200000000000000000000000000000000000000000000000000000000000000000000484730440220201dc2d030e380e8f9cfb41b442d930fa5a685bb2c8db5906671f865507d0670022018d9e7a8d4c8d86a73c2a724ee38ef983ec249827e0e464841735955c707ece98101000000010100000000000000015100000000", "P2SH"],
|
||||
|
||||
["CHECKMULTISIG with incorrect signature order"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
[[["b3da01dd4aae683c7aee4d5d8b52a540a508e1115f77cd7fa9a291243f501223", 0, "HASH160 0x14 0xb1ce99298d5f07364b57b1e5c9cc00be0b04a954 EQUAL"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
|
||||
["The following is a tweaked form of 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63"],
|
||||
["It is an OP_CHECKMULTISIG with the dummy value missing"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004847304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH"],
|
||||
|
||||
|
||||
["CHECKMULTISIG SCRIPT_VERIFY_NULLDUMMY tests:"],
|
||||
|
||||
["The following is a tweaked form of 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63"],
|
||||
["It is an OP_CHECKMULTISIG with the dummy value set to something other than an empty string"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004a010047304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH,NULLDUMMY"],
|
||||
|
||||
["As above, but using a OP_1"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000495147304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH,NULLDUMMY"],
|
||||
|
||||
["As above, but using a OP_1NEGATE"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000494f47304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH,NULLDUMMY"],
|
||||
|
||||
["As above, but with the dummy byte missing"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004847304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH,NULLDUMMY"],
|
||||
|
||||
|
||||
["Empty stack when we try to run CHECKSIG"],
|
||||
[[["ad503f72c18df5801ee64d76090afe4c607fb2b822e9b7b63c5826c50e22fc3b", 0, "0x21 0x027c3a97665bf283a102a587a62a30a0c102d4d3b141015e2cae6f64e2543113e5 CHECKSIG NOT"]],
|
||||
"01000000013bfc220ec526583cb6b7e922b8b27f604cfe0a09764de61e80f58dc1723f50ad0000000000ffffffff0101000000000000002321027c3a97665bf283a102a587a62a30a0c102d4d3b141015e2cae6f64e2543113e5ac00000000", "P2SH"],
|
||||
|
||||
|
||||
["Inverted versions of tx_valid CODESEPARATOR IF block tests"],
|
||||
|
||||
["CODESEPARATOR in an unexecuted IF block does not change what is hashed"],
|
||||
[[["a955032f4d6b0c9bfe8cad8f00a8933790b9c1dc28c82e0f48e75b35da0e4944", 0, "IF CODESEPARATOR ENDIF 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 CHECKSIGVERIFY CODESEPARATOR 1"]],
|
||||
"010000000144490eda355be7480f2ec828dcc1b9903793a8008fad8cfe9b0c6b4d2f0355a9000000004a48304502207a6974a77c591fa13dff60cabbb85a0de9e025c09c65a4b2285e47ce8e22f761022100f0efaac9ff8ac36b10721e0aae1fb975c90500b50c56e8a0cc52b0403f0425dd0151ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["As above, with the IF block executed"],
|
||||
[[["a955032f4d6b0c9bfe8cad8f00a8933790b9c1dc28c82e0f48e75b35da0e4944", 0, "IF CODESEPARATOR ENDIF 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 CHECKSIGVERIFY CODESEPARATOR 1"]],
|
||||
"010000000144490eda355be7480f2ec828dcc1b9903793a8008fad8cfe9b0c6b4d2f0355a9000000004a483045022100fa4a74ba9fd59c59f46c3960cf90cbe0d2b743c471d24a3d5d6db6002af5eebb02204d70ec490fd0f7055a7c45f86514336e3a7f03503dacecabb247fc23f15c83510100ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["CHECKLOCKTIMEVERIFY tests"],
|
||||
|
||||
["By-height locks, with argument just beyond tx nLockTime"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "499999999 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000fe64cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["By-time locks, with argument just beyond tx nLockTime (but within numerical boundaries)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "500000001 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000feffffff", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Argument missing"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000001b1010000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Argument negative with by-blockheight nLockTime=0"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "-1 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Argument negative with by-blocktime nLockTime=500,000,000"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "-1 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000004005194b1010000000100000000000000000002000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Input locked"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000251b1ffffffff0100000000000000000002000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Another input being unlocked isn't sufficient; the CHECKLOCKTIMEVERIFY-using input must be unlocked"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"] ,
|
||||
["0000000000000000000000000000000000000000000000000000000000000200", 1, "1"]],
|
||||
"010000000200010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00020000000000000000000000000000000000000000000000000000000000000100000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Argument/tx height/time mismatch, both versions"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000251b100000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "499999999 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "500000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "500000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ff64cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Argument 2^32 with nLockTime=2^32-1"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967296 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ffffffff", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Same, but with nLockTime=2^31-1"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ffffff7f", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["6 byte non-minimally-encoded arguments are invalid even if their contents are valid"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x06 0x000000000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Failure due to failing CHECKLOCKTIMEVERIFY in scriptSig"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000251b1000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Failure due to failing CHECKLOCKTIMEVERIFY in redeemScript"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0xc5b93064159b3b2d6ab506a41b1f50463771b988 EQUAL"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000030251b1000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["A transaction with a non-standard DER signature."],
|
||||
[[["b1dbc81696c8a9c0fccd0693ab66d7c368dbc38c0def4e800685560ddd1b2132", 0, "DUP HASH160 0x14 0x4b3bd7eba3bc0284fd3007be7f3be275e94f5826 EQUALVERIFY CHECKSIG"]],
|
||||
"010000000132211bdd0d568506804eef0d8cc3db68c3d766ab9306cdfcc0a9c89616c8dbb1000000006c493045022100c7bb0faea0522e74ff220c20c022d2cb6033f8d167fb89e75a50e237a35fd6d202203064713491b1f8ad5f79e623d0219ad32510bfaa1009ab30cbee77b59317d6e30001210237af13eb2d84e4545af287b919c2282019c9691cc509e78e196a9d8274ed1be0ffffffff0100000000000000001976a914f1b3ed2eda9a2ebe5a9374f692877cdf87c0f95b88ac00000000", "P2SH,DERSIG"],
|
||||
|
||||
["CHECKSEQUENCEVERIFY tests"],
|
||||
|
||||
["By-height locks, with argument just beyond txin.nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4259839 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000feff40000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["By-time locks, with argument just beyond txin.nSequence (but within numerical boundries)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194305 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4259839 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000feff40000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument missing"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument negative with by-blockheight txin.nSequence=0"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "-1 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument negative with by-blocktime txin.nSequence=CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "-1 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument/tx height/time mismatch, both versions"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "65535 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194304 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4259839 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["6 byte non-minimally-encoded arguments are invalid even if their contents are valid"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x06 0x000000000000 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffff00000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Failure due to failing CHECKSEQUENCEVERIFY in scriptSig"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"02000000010001000000000000000000000000000000000000000000000000000000000000000000000251b2000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Failure due to failing CHECKSEQUENCEVERIFY in redeemScript"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x7c17aff532f22beb54069942f9bf567a66133eaf EQUAL"]],
|
||||
"0200000001000100000000000000000000000000000000000000000000000000000000000000000000030251b2000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Failure due to insufficient tx.nVersion (<2)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKSEQUENCEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194304 CHECKSEQUENCEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Unknown witness program version (with DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x60 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"0100000000010300010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff00010000000000000000000000000000000000000000000000000000000000000200000000ffffffff03e8030000000000000151d0070000000000000151b80b00000000000001510002483045022100a3cec69b52cba2d2de623ffffffffff1606184ea55476c0f8189fda231bc9cbb022003181ad597f7c380a7d1c740286b1d022b8b04ded028b833282e055e03b8efef812103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc710000000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["Unknown length for witness program v0"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x15 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3fff", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash Single|AnyoneCanPay (same index output value changed)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None|AnyoneCanPay (input sequence changed)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"0100000000010300010000000000000000000000000000000000000000000000000000000000000000000000ffffffff000100000000000000000000000000000000000000000000000000000000000001000000000100000000010000000000000000000000000000000000000000000000000000000000000200000000ffffffff00000248304502210091b32274295c2a3fa02f5bce92fb2789e3fc6ea947fbe1a76e52ea3f4ef2381a022079ad72aefa3837a2e0c033a8652a59731da05fa4a813f4fc48e87c075037256b822103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc710000000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash All|AnyoneCanPay (third output value changed)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"0100000000010300010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff00010000000000000000000000000000000000000000000000000000000000000200000000ffffffff03e8030000000000000151d0070000000000000151540b00000000000001510002483045022100a3cec69b52cba2d2de623eeef89e0ba1606184ea55476c0f8189fda231bc9cbb022003181ad597f7c380a7d1c740286b1d022b8b04ded028b833282e055e03b8efef812103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc710000000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with a push of 521 bytes"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x20 0x33198a9bfef674ebddb9ffaa52928017b8472791e54c609cb95f278ac6b1e349", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff010000000000000000015102fd0902000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002755100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with unknown version which push false on the stack should be invalid (even without DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x02 0x0000", 2000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff010000000000000000015101010100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness program should leave clean stack"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x20 0x2f04a3aa051f1f60d695f6c44c0c3d383973dfd446ace8962664a76bb10e31a8", 2000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01000000000000000001510102515100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness v0 with a push of 2 bytes"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x02 0x0001", 2000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff010000000000000000015101040002000100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Unknown witness version with non empty scriptSig"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x02 0x0001", 2000]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000151ffffffff010000000000000000015100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Non witness Single|AnyoneCanPay hash input's position (permutation)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x21 0x03596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71 CHECKSIG", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x21 0x03596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71 CHECKSIG", 1001]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["P2WSH with a redeem representing a witness scriptPubKey should fail"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x20 0x34b6c399093e06cf9f0f7f660a1abcfe78fcf7b576f43993208edd9518a0ae9b", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0001045102010100000000", "P2SH,WITNESS"],
|
||||
|
||||
["33 bytes push should be considered a witness scriptPubKey"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x21 0xff25429251b5a84f452230a3c75fd886b7fc5a7865ce4a7bb7a9d7c5be6da3dbff", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["FindAndDelete tests"],
|
||||
["This is a test of FindAndDelete. The first tx is a spend of normal scriptPubKey and the second tx is a spend of bare P2WSH."],
|
||||
["The redeemScript/witnessScript is CHECKSIGVERIFY <0x30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01>."],
|
||||
["The signature is <0x30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01> <pubkey>,"],
|
||||
["where the pubkey is obtained through key recovery with sig and the wrong sighash."],
|
||||
["This is to show that FindAndDelete is applied only to non-segwit scripts"],
|
||||
["To show that the tests are 'correctly wrong', they should pass by modifying OP_CHECKSIG under interpreter.cpp"],
|
||||
["by replacing (sigversion == SIGVERSION_BASE) with (sigversion != SIGVERSION_BASE)"],
|
||||
["Non-segwit: wrong sighash (without FindAndDelete) = 1ba1fe3bc90c5d1265460e684ce6774e324f0fabdf67619eda729e64e8b6bc08"],
|
||||
[[["f18783ace138abac5d3a7a5cf08e88fe6912f267ef936452e0c27d090621c169", 7000, "HASH160 0x14 0x0c746489e2d83cdbb5b90b432773342ba809c134 EQUAL", 200000]],
|
||||
"010000000169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac8387f1581b0000b64830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012103b12a1ec8428fc74166926318c15e17408fea82dbb157575e16a8c365f546248f4aad4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01ffffffff0101000000000000000000000000", "P2SH,WITNESS"],
|
||||
["BIP143: wrong sighash (with FindAndDelete) = 71c9cd9b2869b9c70b01b1f0360c148f42dee72297db312638df136f43311f23"],
|
||||
[[["f18783ace138abac5d3a7a5cf08e88fe6912f267ef936452e0c27d090621c169", 7500, "0x00 0x20 0x9e1be07558ea5cc8e02ed1d80c0911048afad949affa36d5c3951e3159dbea19", 200000]],
|
||||
"0100000000010169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac8387f14c1d000000ffffffff01010000000000000000034830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012102a9d7ed6e161f0e255c10bbfcca0128a9e2035c2c8da58899c54d22d3a31afdef4aad4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0100000000", "P2SH,WITNESS"],
|
||||
["This is multisig version of the FindAndDelete tests"],
|
||||
["Script is 2 CHECKMULTISIGVERIFY <sig1> <sig2> DROP"],
|
||||
["52af4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0148304502205286f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1db90cf43022100e89f17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f594091340c0395960175"],
|
||||
["Signature is 0 <sig1> <sig2> 2 <key1> <key2>"],
|
||||
["Should pass by replacing (sigversion == SIGVERSION_BASE) with (sigversion != SIGVERSION_BASE) under OP_CHECKMULTISIG"],
|
||||
["Non-segwit: wrong sighash (without FindAndDelete) = 4bc6a53e8e16ef508c19e38bba08831daba85228b0211f323d4cb0999cf2a5e8"],
|
||||
[[["9628667ad48219a169b41b020800162287d2c0f713c04157e95c484a8dcb7592", 7000, "HASH160 0x14 0x5748407f5ca5cdca53ba30b79040260770c9ee1b EQUAL", 200000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
["BIP143: wrong sighash (with FindAndDelete) = 17c50ec2181ecdfdc85ca081174b248199ba81fff730794d4f69b8ec031f2dce"],
|
||||
[[["9628667ad48219a169b41b020800162287d2c0f713c04157e95c484a8dcb7592", 7500, "0x00 0x20 0x9b66c15b4e0b4eb49fa877982cafded24859fe5b0e2dbfbe4f0df1de7743fd52", 200000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Make diffs cleaner by leaving a comment here without comma at the end"]
|
||||
]
|
||||
+514
@@ -0,0 +1,514 @@
|
||||
[
|
||||
["The following are deserialized transactions which are valid."],
|
||||
["They are in the form"],
|
||||
["[[[prevout hash, prevout index, prevout scriptPubKey, amount?], [input 2], ...],"],
|
||||
["serializedTransaction, verifyFlags]"],
|
||||
["Objects that are only a single string (like this one) are ignored"],
|
||||
|
||||
["The following is 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63"],
|
||||
["It is of particular interest because it contains an invalidly-encoded signature which OpenSSL accepts"],
|
||||
["See http://r6.ca/blog/20111119T211504Z.html"],
|
||||
["It is also the first OP_CHECKMULTISIG transaction in standard form"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000490047304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH"],
|
||||
|
||||
["The following is a tweaked form of 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63"],
|
||||
["It is an OP_CHECKMULTISIG with an arbitrary extra byte stuffed into the signature at pos length - 2"],
|
||||
["The dummy byte is fine however, so the NULLDUMMY flag should be happy"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004a0048304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2bab01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH,NULLDUMMY"],
|
||||
|
||||
["The following is a tweaked form of 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63"],
|
||||
["It is an OP_CHECKMULTISIG with the dummy value set to something other than an empty string"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004a01ff47304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH"],
|
||||
|
||||
["As above, but using a OP_1"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000495147304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH"],
|
||||
|
||||
["As above, but using a OP_1NEGATE"],
|
||||
[[["60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1", 0, "1 0x41 0x04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4 0x41 0x0461cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d76519aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af 2 OP_CHECKMULTISIG"]],
|
||||
"0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000494f47304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000", "P2SH"],
|
||||
|
||||
["The following is c99c49da4c38af669dea436d3e73780dfdb6c1ecf9958baa52960e8baee30e73"],
|
||||
["It is of interest because it contains a 0-sequence as well as a signature of SIGHASH type 0 (which is not a real type)"],
|
||||
[[["406b2b06bcd34d3c8733e6b79f7a394c8a431fbf4ff5ac705c93f4076bb77602", 0, "DUP HASH160 0x14 0xdc44b1164188067c3a32d4780f5996fa14a4f2d9 EQUALVERIFY CHECKSIG"]],
|
||||
"01000000010276b76b07f4935c70acf54fbf1f438a4c397a9fb7e633873c4dd3bc062b6b40000000008c493046022100d23459d03ed7e9511a47d13292d3430a04627de6235b6e51a40f9cd386f2abe3022100e7d25b080f0bb8d8d5f878bba7d54ad2fda650ea8d158a33ee3cbd11768191fd004104b0e2c879e4daf7b9ab68350228c159766676a14f5815084ba166432aab46198d4cca98fa3e9981d0a90b2effc514b76279476550ba3663fdcaff94c38420e9d5000000000100093d00000000001976a9149a7b0f3b80c6baaeedce0a0842553800f832ba1f88ac00000000", "P2SH"],
|
||||
|
||||
["A nearly-standard transaction with CHECKSIGVERIFY 1 instead of CHECKSIG"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006a473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Same as above, but with the signature duplicated in the scriptPubKey with the proper pushdata prefix"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a01"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006a473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["The following is f7fdd091fa6d8f5e7a8c2458f5c38faffff2d3f1406b6e4fe2c99dcc0d2d1cbb"],
|
||||
["It caught a bug in the workaround for 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63 in an overly simple implementation"],
|
||||
[[["b464e85df2a238416f8bdae11d120add610380ea07f4ef19c5f9dfd472f96c3d", 0, "DUP HASH160 0x14 0xbef80ecf3a44500fda1bc92176e442891662aed2 EQUALVERIFY CHECKSIG"],
|
||||
["b7978cc96e59a8b13e0865d3f95657561a7f725be952438637475920bac9eb21", 1, "DUP HASH160 0x14 0xbef80ecf3a44500fda1bc92176e442891662aed2 EQUALVERIFY CHECKSIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["The following tests for the presence of a bug in the handling of SIGHASH_SINGLE"],
|
||||
["It results in signing the constant 1, instead of something generated based on the transaction,"],
|
||||
["when the input doing the signing has an index greater than the maximum output index"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000200", 0, "1"], ["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0xe52b482f2faa8ecbf0db344f93c84ac908557f33 EQUALVERIFY CHECKSIG"]],
|
||||
"01000000020002000000000000000000000000000000000000000000000000000000000000000000000151ffffffff0001000000000000000000000000000000000000000000000000000000000000000000006b483045022100c9cdd08798a28af9d1baf44a6c77bcc7e279f47dc487c8c899911bc48feaffcc0220503c5c50ae3998a733263c5c0f7061b483e2b56c4c41b456e7d2f5a78a74c077032102d5c25adb51b61339d2b05315791e21bbe80ea470a49db0135720983c905aace0ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["An invalid P2SH Transaction"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x7a052c840ba73af26755de42cf01cc9e0a49fef0 EQUAL"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000009085768617420697320ffffffff010000000000000000015100000000", "NONE"],
|
||||
|
||||
["A valid P2SH Transaction using the standard transaction type put forth in BIP 16"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x8febbed40483661de6958d957412f82deed8e2f7 EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006e493046022100c66c9cdf4c43609586d15424c54707156e316d88b0a1534c9e6b0d4f311406310221009c0fe51dbc9c4ab7cc25d3fdbeccf6679fe6827f08edf2b4a9f16ee3eb0e438a0123210338e8034509af564c62644c07691942e0c056752008a173c89f60ab2a88ac2ebfacffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Tests for CheckTransaction()"],
|
||||
["MAX_MONEY output"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x32afac281462b822adbec5094b8d4d337dd5bd6a EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006e493046022100e1eadba00d9296c743cb6ecc703fd9ddc9b3cd12906176a226ae4c18d6b00796022100a71aef7d2874deff681ba6080f1b278bac7bb99c61b08a85f4311970ffe7f63f012321030c0588dc44d92bdcbf8e72093466766fdc265ead8db64517b0c542275b70fffbacffffffff010040075af0750700015100000000", "P2SH"],
|
||||
|
||||
["MAX_MONEY output + 0 output"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0xb558cbf4930954aa6a344363a15668d7477ae716 EQUAL"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000006d483045022027deccc14aa6668e78a8c9da3484fbcd4f9dcc9bb7d1b85146314b21b9ae4d86022100d0b43dece8cfb07348de0ca8bc5b86276fa88f7f2138381128b7c36ab2e42264012321029bb13463ddd5d2cc05da6e84e37536cb9525703cfd8f43afdb414988987a92f6acffffffff020040075af075070001510000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Coinbase of size 2"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000000", -1, "1"]],
|
||||
"01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff025151ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Coinbase of size 100"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000000", -1, "1"]],
|
||||
"01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff6451515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151515151ffffffff010000000000000000015100000000", "P2SH"],
|
||||
|
||||
["Simple transaction with first input is signed with SIGHASH_ALL, second with SIGHASH_ANYONECANPAY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"],
|
||||
["0000000000000000000000000000000000000000000000000000000000000200", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"]],
|
||||
"010000000200010000000000000000000000000000000000000000000000000000000000000000000049483045022100d180fd2eb9140aeb4210c9204d3f358766eb53842b2a9473db687fa24b12a3cc022079781799cd4f038b85135bbe49ec2b57f306b2bb17101b17f71f000fcab2b6fb01ffffffff0002000000000000000000000000000000000000000000000000000000000000000000004847304402205f7530653eea9b38699e476320ab135b74771e1c48b81a5d041e2ca84b9be7a802200ac8d1f40fb026674fe5a5edd3dea715c27baa9baca51ed45ea750ac9dc0a55e81ffffffff010100000000000000015100000000", "P2SH"],
|
||||
|
||||
["Same as above, but we change the sequence number of the first input to check that SIGHASH_ANYONECANPAY is being followed"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"],
|
||||
["0000000000000000000000000000000000000000000000000000000000000200", 0, "0x21 0x035e7f0d4d0841bcd56c39337ed086b1a633ee770c1ffdd94ac552a95ac2ce0efc CHECKSIG"]],
|
||||
"01000000020001000000000000000000000000000000000000000000000000000000000000000000004948304502203a0f5f0e1f2bdbcd04db3061d18f3af70e07f4f467cbc1b8116f267025f5360b022100c792b6e215afc5afc721a351ec413e714305cb749aae3d7fee76621313418df101010000000002000000000000000000000000000000000000000000000000000000000000000000004847304402205f7530653eea9b38699e476320ab135b74771e1c48b81a5d041e2ca84b9be7a802200ac8d1f40fb026674fe5a5edd3dea715c27baa9baca51ed45ea750ac9dc0a55e81ffffffff010100000000000000015100000000", "P2SH"],
|
||||
|
||||
["afd9c17f8913577ec3509520bd6e5d63e9c0fd2a5f70c787993b097ba6ca9fae which has several SIGHASH_SINGLE signatures"],
|
||||
[[["63cfa5a09dc540bf63e53713b82d9ea3692ca97cd608c384f2aa88e51a0aac70", 0, "DUP HASH160 0x14 0xdcf72c4fd02f5a987cf9b02f2fabfcac3341a87d EQUALVERIFY CHECKSIG"],
|
||||
["04e8d0fcf3846c6734477b98f0f3d4badfb78f020ee097a0be5fe347645b817d", 1, "DUP HASH160 0x14 0xdcf72c4fd02f5a987cf9b02f2fabfcac3341a87d EQUALVERIFY CHECKSIG"],
|
||||
["ee1377aff5d0579909e11782e1d2f5f7b84d26537be7f5516dd4e43373091f3f", 1, "DUP HASH160 0x14 0xdcf72c4fd02f5a987cf9b02f2fabfcac3341a87d EQUALVERIFY CHECKSIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["ddc454a1c0c35c188c98976b17670f69e586d9c0f3593ea879928332f0a069e7, which spends an input that pushes using a PUSHDATA1 that is negative when read as signed"],
|
||||
[[["c5510a5dd97a25f43175af1fe649b707b1df8e1a41489bac33a23087027a2f48", 0, "0x4c 0xae 0x606563686f2022553246736447566b58312b5a536e587574356542793066794778625456415675534a6c376a6a334878416945325364667657734f53474f36633338584d7439435c6e543249584967306a486956304f376e775236644546673d3d22203e20743b206f70656e73736c20656e63202d7061737320706173733a5b314a564d7751432d707269766b65792d6865785d202d64202d6165732d3235362d636263202d61202d696e207460 DROP DUP HASH160 0x14 0xbfd7436b6265aa9de506f8a994f881ff08cc2872 EQUALVERIFY CHECKSIG"]],
|
||||
"0100000001482f7a028730a233ac9b48411a8edfb107b749e61faf7531f4257ad95d0a51c5000000008b483045022100bf0bbae9bde51ad2b222e87fbf67530fbafc25c903519a1e5dcc52a32ff5844e022028c4d9ad49b006dd59974372a54291d5764be541574bb0c4dc208ec51f80b7190141049dd4aad62741dc27d5f267f7b70682eee22e7e9c1923b9c0957bdae0b96374569b460eb8d5b40d972e8c7c0ad441de3d94c4a29864b212d56050acb980b72b2bffffffff0180969800000000001976a914e336d0017a9d28de99d16472f6ca6d5a3a8ebc9988ac00000000", "P2SH"],
|
||||
|
||||
["Correct signature order"],
|
||||
["Note the input is just required to make the tester happy"],
|
||||
[[["b3da01dd4aae683c7aee4d5d8b52a540a508e1115f77cd7fa9a291243f501223", 0, "HASH160 0x14 0xb1ce99298d5f07364b57b1e5c9cc00be0b04a954 EQUAL"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["cc60b1f899ec0a69b7c3f25ddf32c4524096a9c5b01cbd84c6d0312a0c478984, which is a fairly strange transaction which relies on OP_CHECKSIG returning 0 when checking a completely invalid sig of length 0"],
|
||||
[[["cbebc4da731e8995fe97f6fadcd731b36ad40e5ecb31e38e904f6e5982fa09f7", 0, "0x2102085c6600657566acc2d6382a47bc3f324008d2aa10940dd7705a48aa2a5a5e33ac7c2103f5d0fb955f95dd6be6115ce85661db412ec6a08abcbfce7da0ba8297c6cc0ec4ac7c5379a820d68df9e32a147cffa36193c6f7c43a1c8c69cda530e1c6db354bfabdcfefaf3c875379a820f531f3041d3136701ea09067c53e7159c8f9b2746a56c3d82966c54bbc553226879a5479827701200122a59a5379827701200122a59a6353798277537982778779679a68"]],
|
||||
"0100000001f709fa82596e4f908ee331cb5e0ed46ab331d7dcfaf697fe95891e73dac4ebcb000000008c20ca42095840735e89283fec298e62ac2ddea9b5f34a8cbb7097ad965b87568100201b1b01dc829177da4a14551d2fc96a9db00c6501edfa12f22cd9cefd335c227f483045022100a9df60536df5733dd0de6bc921fab0b3eee6426501b43a228afa2c90072eb5ca02201c78b74266fac7d1db5deff080d8a403743203f109fbcabf6d5a760bf87386d20100ffffffff01c075790000000000232103611f9a45c18f28f06f19076ad571c344c82ce8fcfe34464cf8085217a2d294a6ac00000000", "P2SH"],
|
||||
|
||||
["Empty pubkey"],
|
||||
[[["229257c295e7f555421c1bfec8538dd30a4b5c37c1c8810bbe83cafa7811652c", 0, "0x00 CHECKSIG NOT"]],
|
||||
"01000000012c651178faca83be0b81c8c1375c4b0ad38d53c8fe1b1c4255f5e795c25792220000000049483045022100d6044562284ac76c985018fc4a90127847708c9edb280996c507b28babdc4b2a02203d74eca3f1a4d1eea7ff77b528fde6d5dc324ec2dbfdb964ba885f643b9704cd01ffffffff010100000000000000232102c2410f8891ae918cab4ffc4bb4a3b0881be67c7a1e7faa8b5acf9ab8932ec30cac00000000", "P2SH"],
|
||||
|
||||
["Empty signature"],
|
||||
[[["9ca93cfd8e3806b9d9e2ba1cf64e3cc6946ee0119670b1796a09928d14ea25f7", 0, "0x21 0x028a1d66975dbdf97897e3a4aef450ebeb5b5293e4a0b4a6d3a2daaa0b2b110e02 CHECKSIG NOT"]],
|
||||
"0100000001f725ea148d92096a79b1709611e06e94c63c4ef61cbae2d9b906388efd3ca99c000000000100ffffffff0101000000000000002321028a1d66975dbdf97897e3a4aef450ebeb5b5293e4a0b4a6d3a2daaa0b2b110e02ac00000000", "P2SH"],
|
||||
|
||||
[[["444e00ed7840d41f20ecd9c11d3f91982326c731a02f3c05748414a4fa9e59be", 0, "1 0x00 0x21 0x02136b04758b0b6e363e7a6fbe83aaf527a153db2b060d36cc29f7f8309ba6e458 2 CHECKMULTISIG"]],
|
||||
"0100000001be599efaa4148474053c2fa031c7262398913f1dc1d9ec201fd44078ed004e44000000004900473044022022b29706cb2ed9ef0cb3c97b72677ca2dfd7b4160f7b4beb3ba806aa856c401502202d1e52582412eba2ed474f1f437a427640306fd3838725fab173ade7fe4eae4a01ffffffff010100000000000000232103ac4bba7e7ca3e873eea49e08132ad30c7f03640b6539e9b59903cf14fd016bbbac00000000", "P2SH"],
|
||||
|
||||
[[["e16abbe80bf30c080f63830c8dbf669deaef08957446e95940227d8c5e6db612", 0, "1 0x21 0x03905380c7013e36e6e19d305311c1b81fce6581f5ee1c86ef0627c68c9362fc9f 0x00 2 CHECKMULTISIG"]],
|
||||
"010000000112b66d5e8c7d224059e946749508efea9d66bf8d0c83630f080cf30be8bb6ae100000000490047304402206ffe3f14caf38ad5c1544428e99da76ffa5455675ec8d9780fac215ca17953520220779502985e194d84baa36b9bd40a0dbd981163fa191eb884ae83fc5bd1c86b1101ffffffff010100000000000000232103905380c7013e36e6e19d305311c1b81fce6581f5ee1c86ef0627c68c9362fc9fac00000000", "P2SH"],
|
||||
|
||||
[[["ebbcf4bfce13292bd791d6a65a2a858d59adbf737e387e40370d4e64cc70efb0", 0, "2 0x21 0x033bcaa0a602f0d44cc9d5637c6e515b0471db514c020883830b7cefd73af04194 0x21 0x03a88b326f8767f4f192ce252afe33c94d25ab1d24f27f159b3cb3aa691ffe1423 2 CHECKMULTISIG NOT"]],
|
||||
"0100000001b0ef70cc644e0d37407e387e73bfad598d852a5aa6d691d72b2913cebff4bceb000000004a00473044022068cd4851fc7f9a892ab910df7a24e616f293bcb5c5fbdfbc304a194b26b60fba022078e6da13d8cb881a22939b952c24f88b97afd06b4c47a47d7f804c9a352a6d6d0100ffffffff0101000000000000002321033bcaa0a602f0d44cc9d5637c6e515b0471db514c020883830b7cefd73af04194ac00000000", "P2SH"],
|
||||
|
||||
[[["ba4cd7ae2ad4d4d13ebfc8ab1d93a63e4a6563f25089a18bf0fc68f282aa88c1", 0, "2 0x21 0x037c615d761e71d38903609bf4f46847266edc2fb37532047d747ba47eaae5ffe1 0x21 0x02edc823cd634f2c4033d94f5755207cb6b60c4b1f1f056ad7471c47de5f2e4d50 2 CHECKMULTISIG NOT"]],
|
||||
"0100000001c188aa82f268fcf08ba18950f263654a3ea6931dabc8bf3ed1d4d42aaed74cba000000004b0000483045022100940378576e069aca261a6b26fb38344e4497ca6751bb10905c76bb689f4222b002204833806b014c26fd801727b792b1260003c55710f87c5adbd7a9cb57446dbc9801ffffffff0101000000000000002321037c615d761e71d38903609bf4f46847266edc2fb37532047d747ba47eaae5ffe1ac00000000", "P2SH"],
|
||||
|
||||
|
||||
["OP_CODESEPARATOR tests"],
|
||||
|
||||
["Test that SignatureHash() removes OP_CODESEPARATOR with FindAndDelete()"],
|
||||
[[["bc7fd132fcf817918334822ee6d9bd95c889099c96e07ca2c1eb2cc70db63224", 0, "CODESEPARATOR 0x21 0x038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041 CHECKSIG"]],
|
||||
"01000000012432b60dc72cebc1a27ce0969c0989c895bdd9e62e8234839117f8fc32d17fbc000000004a493046022100a576b52051962c25e642c0fd3d77ee6c92487048e5d90818bcf5b51abaccd7900221008204f8fb121be4ec3b24483b1f92d89b1b0548513a134e345c5442e86e8617a501ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
[[["83e194f90b6ef21fa2e3a365b63794fb5daa844bdc9b25de30899fcfe7b01047", 0, "CODESEPARATOR CODESEPARATOR 0x21 0x038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041 CHECKSIG"]],
|
||||
"01000000014710b0e7cf9f8930de259bdc4b84aa5dfb9437b665a3e3a21ff26e0bf994e183000000004a493046022100a166121a61b4eeb19d8f922b978ff6ab58ead8a5a5552bf9be73dc9c156873ea02210092ad9bc43ee647da4f6652c320800debcf08ec20a094a0aaf085f63ecb37a17201ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["Hashed data starts at the CODESEPARATOR"],
|
||||
[[["326882a7f22b5191f1a0cc9962ca4b878cd969cf3b3a70887aece4d801a0ba5e", 0, "0x21 0x038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041 CODESEPARATOR CHECKSIG"]],
|
||||
"01000000015ebaa001d8e4ec7a88703a3bcf69d98c874bca6299cca0f191512bf2a7826832000000004948304502203bf754d1c6732fbf87c5dcd81258aefd30f2060d7bd8ac4a5696f7927091dad1022100f5bcb726c4cf5ed0ed34cc13dadeedf628ae1045b7cb34421bc60b89f4cecae701ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["But only if execution has reached it"],
|
||||
[[["a955032f4d6b0c9bfe8cad8f00a8933790b9c1dc28c82e0f48e75b35da0e4944", 0, "0x21 0x038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041 CHECKSIGVERIFY CODESEPARATOR 0x21 0x038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041 CHECKSIGVERIFY CODESEPARATOR 1"]],
|
||||
"010000000144490eda355be7480f2ec828dcc1b9903793a8008fad8cfe9b0c6b4d2f0355a900000000924830450221009c0a27f886a1d8cb87f6f595fbc3163d28f7a81ec3c4b252ee7f3ac77fd13ffa02203caa8dfa09713c8c4d7ef575c75ed97812072405d932bd11e6a1593a98b679370148304502201e3861ef39a526406bad1e20ecad06be7375ad40ddb582c9be42d26c3a0d7b240221009d0a3985e96522e59635d19cc4448547477396ce0ef17a58e7d74c3ef464292301ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["CODESEPARATOR in an unexecuted IF block does not change what is hashed"],
|
||||
[[["a955032f4d6b0c9bfe8cad8f00a8933790b9c1dc28c82e0f48e75b35da0e4944", 0, "IF CODESEPARATOR ENDIF 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 CHECKSIGVERIFY CODESEPARATOR 1"]],
|
||||
"010000000144490eda355be7480f2ec828dcc1b9903793a8008fad8cfe9b0c6b4d2f0355a9000000004a48304502207a6974a77c591fa13dff60cabbb85a0de9e025c09c65a4b2285e47ce8e22f761022100f0efaac9ff8ac36b10721e0aae1fb975c90500b50c56e8a0cc52b0403f0425dd0100ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["As above, with the IF block executed"],
|
||||
[[["a955032f4d6b0c9bfe8cad8f00a8933790b9c1dc28c82e0f48e75b35da0e4944", 0, "IF CODESEPARATOR ENDIF 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 CHECKSIGVERIFY CODESEPARATOR 1"]],
|
||||
"010000000144490eda355be7480f2ec828dcc1b9903793a8008fad8cfe9b0c6b4d2f0355a9000000004a483045022100fa4a74ba9fd59c59f46c3960cf90cbe0d2b743c471d24a3d5d6db6002af5eebb02204d70ec490fd0f7055a7c45f86514336e3a7f03503dacecabb247fc23f15c83510151ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
|
||||
["CHECKSIG is legal in scriptSigs"],
|
||||
[[["ccf7f4053a02e653c36ac75c891b7496d0dc5ce5214f6c913d9cf8f1329ebee0", 0, "DUP HASH160 0x14 0xee5a6aa40facefb2655ac23c0c28c57c65c41f9b EQUALVERIFY CHECKSIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["Same semantics for OP_CODESEPARATOR"],
|
||||
[[["10c9f0effe83e97f80f067de2b11c6a00c3088a4bce42c5ae761519af9306f3c", 1, "DUP HASH160 0x14 0xee5a6aa40facefb2655ac23c0c28c57c65c41f9b EQUALVERIFY CHECKSIG"]],
|
||||
"01000000013c6f30f99a5161e75a2ce4bca488300ca0c6112bde67f0807fe983feeff0c91001000000e608646561646265656675ab61493046022100ce18d384221a731c993939015e3d1bcebafb16e8c0b5b5d14097ec8177ae6f28022100bcab227af90bab33c3fe0a9abfee03ba976ee25dc6ce542526e9b2e56e14b7f10121038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041ac493046022100c3b93edcc0fd6250eb32f2dd8a0bba1754b0f6c3be8ed4100ed582f3db73eba2022100bf75b5bd2eff4d6bf2bda2e34a40fcc07d4aa3cf862ceaa77b47b81eff829f9a01ab21038479a0fa998cd35259a2ef0a7a5c68662c1474f88ccb6d08a7677bbec7f22041ffffffff010000000000000000016a00000000", "P2SH"],
|
||||
|
||||
["Signatures are removed from the script they are in by FindAndDelete() in the CHECKSIG code; even multiple instances of one signature can be removed."],
|
||||
[[["6056ebd549003b10cbbd915cea0d82209fe40b8617104be917a26fa92cbe3d6f", 0, "DUP HASH160 0x14 0xee5a6aa40facefb2655ac23c0c28c57c65c41f9b EQUALVERIFY CHECKSIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["That also includes ahead of the opcode being executed."],
|
||||
[[["5a6b0021a6042a686b6b94abc36b387bef9109847774e8b1e51eb8cc55c53921", 1, "DUP HASH160 0x14 0xee5a6aa40facefb2655ac23c0c28c57c65c41f9b EQUALVERIFY CHECKSIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["Finally CHECKMULTISIG removes all signatures prior to hashing the script containing those signatures. In conjunction with the SIGHASH_SINGLE bug this lets us test whether or not FindAndDelete() is actually present in scriptPubKey/redeemScript evaluation by including a signature of the digest 0x01 We can compute in advance for our pubkey, embed it it in the scriptPubKey, and then also using a normal SIGHASH_ALL signature. If FindAndDelete() wasn't run, the 'bugged' signature would still be in the hashed script, and the normal signature would fail."],
|
||||
|
||||
["Here's an example on mainnet within a P2SH redeemScript. Remarkably it's a standard transaction in <0.9"],
|
||||
[[["b5b598de91787439afd5938116654e0b16b7a0d0f82742ba37564219c5afcbf9", 0, "DUP HASH160 0x14 0xf6f365c40f0739b61de827a44751e5e99032ed8f EQUALVERIFY CHECKSIG"],
|
||||
["ab9805c6d57d7070d9a42c5176e47bb705023e6b67249fb6760880548298e742", 0, "HASH160 0x14 0xd8dacdadb7462ae15cd906f1878706d0da8660e6 EQUAL"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
["Same idea, but with bare CHECKMULTISIG"],
|
||||
[[["ceafe58e0f6e7d67c0409fbbf673c84c166e3c5d3c24af58f7175b18df3bb3db", 0, "DUP HASH160 0x14 0xf6f365c40f0739b61de827a44751e5e99032ed8f EQUALVERIFY CHECKSIG"],
|
||||
["ceafe58e0f6e7d67c0409fbbf673c84c166e3c5d3c24af58f7175b18df3bb3db", 1, "2 0x48 0x3045022015bd0139bcccf990a6af6ec5c1c52ed8222e03a0d51c334df139968525d2fcd20221009f9efe325476eb64c3958e4713e9eefe49bf1d820ed58d2112721b134e2a1a5303 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 0x21 0x0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c71 3 CHECKMULTISIG"]],
|
||||
"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", "P2SH"],
|
||||
|
||||
|
||||
["CHECKLOCKTIMEVERIFY tests"],
|
||||
|
||||
["By-height locks, with argument == 0 and == tx nLockTime"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "499999999 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ff64cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ff64cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["By-time locks, with argument just beyond tx nLockTime (but within numerical boundaries)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "500000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ffffffff", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "500000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000ffffffff", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Any non-maxint nSequence is fine"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000feffffff0100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["The argument can be calculated rather than created directly by a PUSHDATA"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "499999999 1ADD CHECKLOCKTIMEVERIFY 1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000065cd1d", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Perhaps even by an ADD producing a 5-byte result that is out of bounds for other opcodes"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483647 2147483647 ADD CHECKLOCKTIMEVERIFY 1"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000feffffff", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["5 byte non-minimally-encoded arguments are valid"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x05 0x0000000000 CHECKLOCKTIMEVERIFY 1"]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Valid CHECKLOCKTIMEVERIFY in scriptSig"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"01000000010001000000000000000000000000000000000000000000000000000000000000000000000251b1000000000100000000000000000001000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["Valid CHECKLOCKTIMEVERIFY in redeemScript"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0xc5b93064159b3b2d6ab506a41b1f50463771b988 EQUAL"]],
|
||||
"0100000001000100000000000000000000000000000000000000000000000000000000000000000000030251b1000000000100000000000000000001000000", "P2SH,CHECKLOCKTIMEVERIFY"],
|
||||
|
||||
["A transaction with a non-standard DER signature."],
|
||||
[[["b1dbc81696c8a9c0fccd0693ab66d7c368dbc38c0def4e800685560ddd1b2132", 0, "DUP HASH160 0x14 0x4b3bd7eba3bc0284fd3007be7f3be275e94f5826 EQUALVERIFY CHECKSIG"]],
|
||||
"010000000132211bdd0d568506804eef0d8cc3db68c3d766ab9306cdfcc0a9c89616c8dbb1000000006c493045022100c7bb0faea0522e74ff220c20c022d2cb6033f8d167fb89e75a50e237a35fd6d202203064713491b1f8ad5f79e623d0219ad32510bfaa1009ab30cbee77b59317d6e30001210237af13eb2d84e4545af287b919c2282019c9691cc509e78e196a9d8274ed1be0ffffffff0100000000000000001976a914f1b3ed2eda9a2ebe5a9374f692877cdf87c0f95b88ac00000000", "P2SH"],
|
||||
|
||||
["CHECKSEQUENCEVERIFY tests"],
|
||||
|
||||
["By-height locks, with argument == 0 and == txin.nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "65535 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffff00000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "65535 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffbf7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffbf7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["By-time locks, with argument == 0 and == txin.nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194304 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4259839 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffff40000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4259839 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffff7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194304 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffff7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Upper sequence with upper sequence is fine"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000800100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000800100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000feffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000feffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument 2^31 with various nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffbf7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffff7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483648 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument 2^32-1 with various nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffbf7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffff7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4294967295 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Argument 3<<31 with various nSequence"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "6442450944 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffbf7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "6442450944 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffff7f0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "6442450944 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff0100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["5 byte non-minimally-encoded operandss are valid"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x05 0x0000000000 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["The argument can be calculated rather than created directly by a PUSHDATA"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194303 1ADD CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "4194304 1SUB CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000ffff00000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["An ADD producing a 5-byte result that sets CTxIn::SEQUENCE_LOCKTIME_DISABLE_FLAG"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483647 65536 CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "2147483647 4259840 ADD CHECKSEQUENCEVERIFY 1"]],
|
||||
"020000000100010000000000000000000000000000000000000000000000000000000000000000000000000040000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Valid CHECKSEQUENCEVERIFY in scriptSig"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "1"]],
|
||||
"02000000010001000000000000000000000000000000000000000000000000000000000000000000000251b2010000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Valid CHECKSEQUENCEVERIFY in redeemScript"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x7c17aff532f22beb54069942f9bf567a66133eaf EQUAL"]],
|
||||
"0200000001000100000000000000000000000000000000000000000000000000000000000000000000030251b2010000000100000000000000000000000000", "P2SH,CHECKSEQUENCEVERIFY"],
|
||||
|
||||
["Valid P2WPKH (Private key of segwit tests is L5AQtV2HDm4xGsseLokK2VAT2EtYKcTm3c7HwqnJBFt9LdaQULsM)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e8030000000000001976a9144c9c3dfac4207d5d8cb89df5722cb3d712385e3f88ac02483045022100cfb07164b36ba64c1b1e8c7720a56ad64d96f6ef332d3d37f9cb3c96477dc44502200a464cd7a9cf94cd70f66ce4f4f0625ef650052c7afcfe29d7d7e01830ff91ed012103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc7100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Valid P2WSH"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x20 0xff25429251b5a84f452230a3c75fd886b7fc5a7865ce4a7bb7a9d7c5be6da3db", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e8030000000000001976a9144c9c3dfac4207d5d8cb89df5722cb3d712385e3f88ac02483045022100aa5d8aa40a90f23ce2c3d11bc845ca4a12acd99cbea37de6b9f6d86edebba8cb022022dedc2aa0a255f74d04c0b76ece2d7c691f9dd11a64a8ac49f62a99c3a05f9d01232103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71ac00000000", "P2SH,WITNESS"],
|
||||
|
||||
["Valid P2SH(P2WPKH)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0xfe9c7dacc9fcfbf7e3b7d5ad06aa2b28c5a7b7e3 EQUAL", 1000]],
|
||||
"01000000000101000100000000000000000000000000000000000000000000000000000000000000000000171600144c9c3dfac4207d5d8cb89df5722cb3d712385e3fffffffff01e8030000000000001976a9144c9c3dfac4207d5d8cb89df5722cb3d712385e3f88ac02483045022100cfb07164b36ba64c1b1e8c7720a56ad64d96f6ef332d3d37f9cb3c96477dc44502200a464cd7a9cf94cd70f66ce4f4f0625ef650052c7afcfe29d7d7e01830ff91ed012103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc7100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Valid P2SH(P2WSH)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x2135ab4f0981830311e35600eebc7376dce3a914 EQUAL", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000023220020ff25429251b5a84f452230a3c75fd886b7fc5a7865ce4a7bb7a9d7c5be6da3dbffffffff01e8030000000000001976a9144c9c3dfac4207d5d8cb89df5722cb3d712385e3f88ac02483045022100aa5d8aa40a90f23ce2c3d11bc845ca4a12acd99cbea37de6b9f6d86edebba8cb022022dedc2aa0a255f74d04c0b76ece2d7c691f9dd11a64a8ac49f62a99c3a05f9d01232103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71ac00000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash Single|AnyoneCanPay"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 3, "0x51", 4100]],
|
||||
"0100000000010400010000000000000000000000000000000000000000000000000000000000000200000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff00010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000300000000ffffffff05540b0000000000000151d0070000000000000151840300000000000001513c0f00000000000001512c010000000000000151000248304502210092f4777a0f17bf5aeb8ae768dec5f2c14feabf9d1fe2c89c78dfed0f13fdb86902206da90a86042e252bcd1e80a168c719e4a1ddcc3cebea24b9812c5453c79107e9832103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71000000000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash Single|AnyoneCanPay (same signature as previous)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"0100000000010300010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff00010000000000000000000000000000000000000000000000000000000000000200000000ffffffff03e8030000000000000151d0070000000000000151b80b0000000000000151000248304502210092f4777a0f17bf5aeb8ae768dec5f2c14feabf9d1fe2c89c78dfed0f13fdb86902206da90a86042e252bcd1e80a168c719e4a1ddcc3cebea24b9812c5453c79107e9832103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc710000000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash Single"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash Single (same signature as previous)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"0100000000010300010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff00010000000000000000000000000000000000000000000000000000000000000200000000ffffffff03e8030000000000000151d0070000000000000151b80b000000000000015100024730440220699e6b0cfe015b64ca3283e6551440a34f901ba62dd4c72fe1cb815afb2e6761022021cc5e84db498b1479de14efda49093219441adc6c543e5534979605e273d80b032103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc710000000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None|AnyoneCanPay"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 3, "0x51", 4100]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None|AnyoneCanPay (same signature as previous)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None (same signature as previous)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash None (same signature, only sequences changed)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash All|AnyoneCanPay"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1100],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 3, "0x51", 4100]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with SigHash All|AnyoneCanPay (same signature as previous)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Unknown witness program version (without DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x60 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 2000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "0x51", 3000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness with a push of 520 bytes"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x20 0x33198a9bfef674ebddb9ffaa52928017b8472791e54c609cb95f278ac6b1e349", 1000]],
|
||||
"0100000000010100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff010000000000000000015102fd08020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002755100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Transaction mixing all SigHash, segwit and normal inputs"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1001],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 2, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1002],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 3, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1003],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 4, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1004],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 5, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1005],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 6, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1006],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 7, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1007],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 8, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1008],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 9, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1009],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 10, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1010],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 11, "DUP HASH160 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f EQUALVERIFY CHECKSIG", 1011]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Unknown version witness program with empty witness"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS"],
|
||||
|
||||
["Witness SIGHASH_SINGLE with output out of bound"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x51", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x20 0x4d6c2a32c87821d68fc016fca70797abdb80df6cd84651d40a9300c6bad79e62", 1000]],
|
||||
"0100000000010200010000000000000000000000000000000000000000000000000000000000000000000000ffffffff00010000000000000000000000000000000000000000000000000000000000000100000000ffffffff01d00700000000000001510003483045022100e078de4e96a0e05dcdc0a414124dd8475782b5f3f0ed3f607919e9a5eeeb22bf02201de309b3a3109adb3de8074b3610d4cf454c49b61247a2779a0bcbf31c889333032103596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc711976a9144c9c3dfac4207d5d8cb89df5722cb3d712385e3f88ac00000000", "P2SH,WITNESS"],
|
||||
|
||||
["1 byte push should not be considered a witness scriptPubKey"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x01 0x01", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["41 bytes push should not be considered a witness scriptPubKey"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x29 0xff25429251b5a84f452230a3c75fd886b7fc5a7865ce4a7bb7a9d7c5be6da3dbff0000000000000000", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["The witness version must use OP_1 to OP_16 only"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x01 0x10 0x02 0x0001", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["The witness program push must be canonical"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x60 0x4c02 0x0001", 1000]],
|
||||
"010000000100010000000000000000000000000000000000000000000000000000000000000000000000ffffffff01e803000000000000015100000000", "P2SH,WITNESS,DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"],
|
||||
|
||||
["Witness Single|AnyoneCanPay does not hash input's position"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1001]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Witness Single|AnyoneCanPay does not hash input's position (permutation)"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1001],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x00 0x14 0x4c9c3dfac4207d5d8cb89df5722cb3d712385e3f", 1000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["Non witness Single|AnyoneCanPay hash input's position"],
|
||||
[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "0x21 0x03596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71 CHECKSIG", 1000],
|
||||
["0000000000000000000000000000000000000000000000000000000000000100", 1, "0x21 0x03596d3451025c19dbbdeb932d6bf8bfb4ad499b95b6f88db8899efac102e5fc71 CHECKSIG", 1001]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["BIP143 examples: details and private keys are available in BIP143"],
|
||||
["BIP143 example: P2WSH with OP_CODESEPARATOR and out-of-range SIGHASH_SINGLE."],
|
||||
[[["6eb316926b1c5d567cd6f5e6a84fec606fc53d7b474526d1fff3948020c93dfe", 0, "0x21 0x036d5c20fa14fb2f635474c1dc4ef5909d4568e5569b79fc94d3448486e14685f8 CHECKSIG", 156250000],
|
||||
["f825690aee1b3dc247da796cacb12687a5e802429fd291cfd63e010f02cf1508", 0, "0x00 0x20 0x5d1b56b63d714eebe542309525f484b7e9d6f686b3781b6f61ef925d66d6f6a0", 4900000000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["BIP143 example: P2WSH with unexecuted OP_CODESEPARATOR and SINGLE|ANYONECANPAY"],
|
||||
[[["01c0cf7fba650638e55eb91261b183251fbb466f90dff17f10086817c542b5e9", 0, "0x00 0x20 0xba468eea561b26301e4cf69fa34bde4ad60c81e70f059f045ca9a79931004a4d", 16777215],
|
||||
["1b2a9a426ba603ba357ce7773cb5805cb9c7c2b386d100d1fc9263513188e680", 0, "0x00 0x20 0xd9bbfbe56af7c4b7f960a70d7ea107156913d9e5a26b0a71429df5e097ca6537", 16777215]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
|
||||
["BIP143 example: Same as the previous example with input-output pairs swapped"],
|
||||
[[["1b2a9a426ba603ba357ce7773cb5805cb9c7c2b386d100d1fc9263513188e680", 0, "0x00 0x20 0xd9bbfbe56af7c4b7f960a70d7ea107156913d9e5a26b0a71429df5e097ca6537", 16777215],
|
||||
["01c0cf7fba650638e55eb91261b183251fbb466f90dff17f10086817c542b5e9", 0, "0x00 0x20 0xba468eea561b26301e4cf69fa34bde4ad60c81e70f059f045ca9a79931004a4d", 16777215]],
|
||||
"0100000000010280e68831516392fcd100d186b3c2c7b95c80b53c77e77c35ba03a66b429a2a1b0000000000ffffffffe9b542c5176808107ff1df906f46bb1f2583b16112b95ee5380665ba7fcfc0010000000000ffffffff0280969800000000001976a9146648a8cd4531e1ec47f35916de8e259237294d1e88ac80969800000000001976a914de4b231626ef508c9a74a8517e6783c0546d6b2888ac024730440220032521802a76ad7bf74d0e2c218b72cf0cbc867066e2e53db905ba37f130397e02207709e2188ed7f08f4c952d9d13986da504502b8c3be59617e043552f506c46ff83275163ab68210392972e2eb617b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac02483045022100f6a10b8604e6dc910194b79ccfc93e1bc0ec7c03453caaa8987f7d6c3413566002206216229ede9b4d6ec2d325be245c5b508ff0339bf1794078e20bfe0babc7ffe683270063ab68210392972e2eb617b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac00000000", "P2SH,WITNESS"],
|
||||
|
||||
["BIP143 example: P2SH-P2WSH 6-of-6 multisig signed with 6 different SIGHASH types"],
|
||||
[[["6eb98797a21c6c10aa74edf29d618be109f48a8e94c694f3701e08ca69186436", 1, "HASH160 0x14 0x9993a429037b5d912407a71c252019287b8d27a5 EQUAL", 987654321]],
|
||||
"0100000000010136641869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e0100000023220020a16b5755f7f6f96dbd65f5f0d6ab9418b89af4b1f14a1bb8a09062c35f0dcb54ffffffff0200e9a435000000001976a914389ffce9cd9ae88dcc0631e88a821ffdbe9bfe2688acc0832f05000000001976a9147480a33f950689af511e6e84c138dbbd3c3ee41588ac080047304402206ac44d672dac41f9b00e28f4df20c52eeb087207e8d758d76d92c6fab3b73e2b0220367750dbbe19290069cba53d096f44530e4f98acaa594810388cf7409a1870ce01473044022068c7946a43232757cbdf9176f009a928e1cd9a1a8c212f15c1e11ac9f2925d9002205b75f937ff2f9f3c1246e547e54f62e027f64eefa2695578cc6432cdabce271502473044022059ebf56d98010a932cf8ecfec54c48e6139ed6adb0728c09cbe1e4fa0915302e022007cd986c8fa870ff5d2b3a89139c9fe7e499259875357e20fcbb15571c76795403483045022100fbefd94bd0a488d50b79102b5dad4ab6ced30c4069f1eaa69a4b5a763414067e02203156c6a5c9cf88f91265f5a942e96213afae16d83321c8b31bb342142a14d16381483045022100a5263ea0553ba89221984bd7f0b13613db16e7a70c549a86de0cc0444141a407022005c360ef0ae5a5d4f9f2f87a56c1546cc8268cab08c73501d6b3be2e1e1a8a08824730440220525406a1482936d5a21888260dc165497a90a15669636d8edca6b9fe490d309c022032af0c646a34a44d1f4576bf6a4a74b67940f8faa84c7df9abe12a01a11e2b4783cf56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba32103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a21033400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b661b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56ae00000000", "P2SH,WITNESS"],
|
||||
|
||||
["FindAndDelete tests"],
|
||||
["This is a test of FindAndDelete. The first tx is a spend of normal P2SH and the second tx is a spend of bare P2WSH."],
|
||||
["The redeemScript/witnessScript is CHECKSIGVERIFY <0x30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01>."],
|
||||
["The signature is <0x30450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01> <pubkey>,"],
|
||||
["where the pubkey is obtained through key recovery with sig and correct sighash."],
|
||||
["This is to show that FindAndDelete is applied only to non-segwit scripts"],
|
||||
["Non-segwit: correct sighash (with FindAndDelete) = 1ba1fe3bc90c5d1265460e684ce6774e324f0fabdf67619eda729e64e8b6bc08"],
|
||||
[[["f18783ace138abac5d3a7a5cf08e88fe6912f267ef936452e0c27d090621c169", 7000, "HASH160 0x14 0x0c746489e2d83cdbb5b90b432773342ba809c134 EQUAL", 200000]],
|
||||
"010000000169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac8387f1581b0000b64830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0121037a3fb04bcdb09eba90f69961ba1692a3528e45e67c85b200df820212d7594d334aad4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e01ffffffff0101000000000000000000000000", "P2SH,WITNESS"],
|
||||
["BIP143: correct sighash (without FindAndDelete) = 71c9cd9b2869b9c70b01b1f0360c148f42dee72297db312638df136f43311f23"],
|
||||
[[["f18783ace138abac5d3a7a5cf08e88fe6912f267ef936452e0c27d090621c169", 7500, "0x00 0x20 0x9e1be07558ea5cc8e02ed1d80c0911048afad949affa36d5c3951e3159dbea19", 200000]],
|
||||
"0100000000010169c12106097dc2e0526493ef67f21269fe888ef05c7a3a5dacab38e1ac8387f14c1d000000ffffffff01010000000000000000034830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e012102a9781d66b61fb5a7ef00ac5ad5bc6ffc78be7b44a566e3c87870e1079368df4c4aad4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0100000000", "P2SH,WITNESS"],
|
||||
["This is multisig version of the FindAndDelete tests"],
|
||||
["Script is 2 CHECKMULTISIGVERIFY <sig1> <sig2> DROP"],
|
||||
["52af4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0148304502205286f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1db90cf43022100e89f17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f594091340c0395960175"],
|
||||
["Signature is 0 <sig1> <sig2> 2 <key1> <key2>"],
|
||||
["Non-segwit: correct sighash (with FindAndDelete) = 1d50f00ba4db2917b903b0ec5002e017343bb38876398c9510570f5dce099295"],
|
||||
[[["9628667ad48219a169b41b020800162287d2c0f713c04157e95c484a8dcb7592", 7000, "HASH160 0x14 0x5748407f5ca5cdca53ba30b79040260770c9ee1b EQUAL", 200000]],
|
||||
"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", "P2SH,WITNESS"],
|
||||
["BIP143: correct sighash (without FindAndDelete) = c1628a1e7c67f14ca0c27c06e4fdeec2e6d1a73c7a91d7c046ff83e835aebb72"],
|
||||
[[["9628667ad48219a169b41b020800162287d2c0f713c04157e95c484a8dcb7592", 7500, "0x00 0x20 0x9b66c15b4e0b4eb49fa877982cafded24859fe5b0e2dbfbe4f0df1de7743fd52", 200000]],
|
||||
"010000000001019275cb8d4a485ce95741c013f7c0d28722160008021bb469a11982d47a6628964c1d000000ffffffff0101000000000000000007004830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0148304502205286f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1db90cf43022100e89f17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f594091340c0395960101022102966f109c54e85d3aee8321301136cedeb9fc710fdef58a9de8a73942f8e567c021034ffc99dd9a79dd3cb31e2ab3e0b09e0e67db41ac068c625cd1f491576016c84e9552af4830450220487fb382c4974de3f7d834c1b617fe15860828c7f96454490edd6d891556dcc9022100baf95feb48f845d5bfc9882eb6aeefa1bc3790e39f59eaa46ff7f15ae626c53e0148304502205286f726690b2e9b0207f0345711e63fa7012045b9eb0f19c2458ce1db90cf43022100e89f17f86abc5b149eba4115d4f128bcf45d77fb3ecdd34f594091340c039596017500000000", "P2SH,WITNESS"],
|
||||
|
||||
["Make diffs cleaner by leaving a comment here without comma at the end"]
|
||||
]
|
||||
+42
@@ -0,0 +1,42 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package txscript implements the bitcoin transaction script language.
|
||||
|
||||
A complete description of the script language used by bitcoin can be found at
|
||||
https://en.bitcoin.it/wiki/Script. The following only serves as a quick
|
||||
overview to provide information on how to use the package.
|
||||
|
||||
This package provides data structures and functions to parse and execute
|
||||
bitcoin transaction scripts.
|
||||
|
||||
Script Overview
|
||||
|
||||
Bitcoin transaction scripts are written in a stack-base, FORTH-like language.
|
||||
|
||||
The bitcoin script language consists of a number of opcodes which fall into
|
||||
several categories such pushing and popping data to and from the stack,
|
||||
performing basic and bitwise arithmetic, conditional branching, comparing
|
||||
hashes, and checking cryptographic signatures. Scripts are processed from left
|
||||
to right and intentionally do not provide loops.
|
||||
|
||||
The vast majority of Bitcoin scripts at the time of this writing are of several
|
||||
standard forms which consist of a spender providing a public key and a signature
|
||||
which proves the spender owns the associated private key. This information
|
||||
is used to prove the the spender is authorized to perform the transaction.
|
||||
|
||||
One benefit of using a scripting language is added flexibility in specifying
|
||||
what conditions must be met in order to spend bitcoins.
|
||||
|
||||
Errors
|
||||
|
||||
Errors returned by this package are of type txscript.Error. This allows the
|
||||
caller to programmatically determine the specific error by examining the
|
||||
ErrorCode field of the type asserted txscript.Error while still providing rich
|
||||
error messages with contextual information. A convenience function named
|
||||
IsErrorCode is also provided to allow callers to easily check for a specific
|
||||
error code. See ErrorCode in the package documentation for a full list.
|
||||
*/
|
||||
package txscript
|
||||
+952
@@ -0,0 +1,952 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/sha256"
|
||||
"fmt"
|
||||
"math/big"
|
||||
|
||||
"github.com/btcsuite/btcd/btcec"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
)
|
||||
|
||||
// ScriptFlags is a bitmask defining additional operations or tests that will be
|
||||
// done when executing a script pair.
|
||||
type ScriptFlags uint32
|
||||
|
||||
const (
|
||||
// ScriptBip16 defines whether the bip16 threshold has passed and thus
|
||||
// pay-to-script hash transactions will be fully validated.
|
||||
ScriptBip16 ScriptFlags = 1 << iota
|
||||
|
||||
// ScriptStrictMultiSig defines whether to verify the stack item
|
||||
// used by CHECKMULTISIG is zero length.
|
||||
ScriptStrictMultiSig
|
||||
|
||||
// ScriptDiscourageUpgradableNops defines whether to verify that
|
||||
// NOP1 through NOP10 are reserved for future soft-fork upgrades. This
|
||||
// flag must not be used for consensus critical code nor applied to
|
||||
// blocks as this flag is only for stricter standard transaction
|
||||
// checks. This flag is only applied when the above opcodes are
|
||||
// executed.
|
||||
ScriptDiscourageUpgradableNops
|
||||
|
||||
// ScriptVerifyCheckLockTimeVerify defines whether to verify that
|
||||
// a transaction output is spendable based on the locktime.
|
||||
// This is BIP0065.
|
||||
ScriptVerifyCheckLockTimeVerify
|
||||
|
||||
// ScriptVerifyCheckSequenceVerify defines whether to allow execution
|
||||
// pathways of a script to be restricted based on the age of the output
|
||||
// being spent. This is BIP0112.
|
||||
ScriptVerifyCheckSequenceVerify
|
||||
|
||||
// ScriptVerifyCleanStack defines that the stack must contain only
|
||||
// one stack element after evaluation and that the element must be
|
||||
// true if interpreted as a boolean. This is rule 6 of BIP0062.
|
||||
// This flag should never be used without the ScriptBip16 flag nor the
|
||||
// ScriptVerifyWitness flag.
|
||||
ScriptVerifyCleanStack
|
||||
|
||||
// ScriptVerifyDERSignatures defines that signatures are required
|
||||
// to compily with the DER format.
|
||||
ScriptVerifyDERSignatures
|
||||
|
||||
// ScriptVerifyLowS defines that signtures are required to comply with
|
||||
// the DER format and whose S value is <= order / 2. This is rule 5
|
||||
// of BIP0062.
|
||||
ScriptVerifyLowS
|
||||
|
||||
// ScriptVerifyMinimalData defines that signatures must use the smallest
|
||||
// push operator. This is both rules 3 and 4 of BIP0062.
|
||||
ScriptVerifyMinimalData
|
||||
|
||||
// ScriptVerifyNullFail defines that signatures must be empty if
|
||||
// a CHECKSIG or CHECKMULTISIG operation fails.
|
||||
ScriptVerifyNullFail
|
||||
|
||||
// ScriptVerifySigPushOnly defines that signature scripts must contain
|
||||
// only pushed data. This is rule 2 of BIP0062.
|
||||
ScriptVerifySigPushOnly
|
||||
|
||||
// ScriptVerifyStrictEncoding defines that signature scripts and
|
||||
// public keys must follow the strict encoding requirements.
|
||||
ScriptVerifyStrictEncoding
|
||||
|
||||
// ScriptVerifyWitness defines whether or not to verify a transaction
|
||||
// output using a witness program template.
|
||||
ScriptVerifyWitness
|
||||
|
||||
// ScriptVerifyDiscourageUpgradeableWitnessProgram makes witness
|
||||
// program with versions 2-16 non-standard.
|
||||
ScriptVerifyDiscourageUpgradeableWitnessProgram
|
||||
|
||||
// ScriptVerifyMinimalIf makes a script with an OP_IF/OP_NOTIF whose
|
||||
// operand is anything other than empty vector or [0x01] non-standard.
|
||||
ScriptVerifyMinimalIf
|
||||
|
||||
// ScriptVerifyWitnessPubKeyType makes a script within a check-sig
|
||||
// operation whose public key isn't serialized in a compressed format
|
||||
// non-standard.
|
||||
ScriptVerifyWitnessPubKeyType
|
||||
)
|
||||
|
||||
const (
|
||||
// MaxStackSize is the maximum combined height of stack and alt stack
|
||||
// during execution.
|
||||
MaxStackSize = 1000
|
||||
|
||||
// MaxScriptSize is the maximum allowed length of a raw script.
|
||||
MaxScriptSize = 10000
|
||||
|
||||
// payToWitnessPubKeyHashDataSize is the size of the witness program's
|
||||
// data push for a pay-to-witness-pub-key-hash output.
|
||||
payToWitnessPubKeyHashDataSize = 20
|
||||
|
||||
// payToWitnessScriptHashDataSize is the size of the witness program's
|
||||
// data push for a pay-to-witness-script-hash output.
|
||||
payToWitnessScriptHashDataSize = 32
|
||||
)
|
||||
|
||||
// halforder is used to tame ECDSA malleability (see BIP0062).
|
||||
var halfOrder = new(big.Int).Rsh(btcec.S256().N, 1)
|
||||
|
||||
// Engine is the virtual machine that executes scripts.
|
||||
type Engine struct {
|
||||
scripts [][]parsedOpcode
|
||||
scriptIdx int
|
||||
scriptOff int
|
||||
lastCodeSep int
|
||||
dstack stack // data stack
|
||||
astack stack // alt stack
|
||||
tx wire.MsgTx
|
||||
txIdx int
|
||||
condStack []int
|
||||
numOps int
|
||||
flags ScriptFlags
|
||||
sigCache *SigCache
|
||||
hashCache *TxSigHashes
|
||||
bip16 bool // treat execution as pay-to-script-hash
|
||||
savedFirstStack [][]byte // stack from first script for bip16 scripts
|
||||
witnessVersion int
|
||||
witnessProgram []byte
|
||||
inputAmount int64
|
||||
}
|
||||
|
||||
// hasFlag returns whether the script engine instance has the passed flag set.
|
||||
func (vm *Engine) hasFlag(flag ScriptFlags) bool {
|
||||
return vm.flags&flag == flag
|
||||
}
|
||||
|
||||
// isBranchExecuting returns whether or not the current conditional branch is
|
||||
// actively executing. For example, when the data stack has an OP_FALSE on it
|
||||
// and an OP_IF is encountered, the branch is inactive until an OP_ELSE or
|
||||
// OP_ENDIF is encountered. It properly handles nested conditionals.
|
||||
func (vm *Engine) isBranchExecuting() bool {
|
||||
if len(vm.condStack) == 0 {
|
||||
return true
|
||||
}
|
||||
return vm.condStack[len(vm.condStack)-1] == OpCondTrue
|
||||
}
|
||||
|
||||
// executeOpcode peforms execution on the passed opcode. It takes into account
|
||||
// whether or not it is hidden by conditionals, but some rules still must be
|
||||
// tested in this case.
|
||||
func (vm *Engine) executeOpcode(pop *parsedOpcode) error {
|
||||
// Disabled opcodes are fail on program counter.
|
||||
if pop.isDisabled() {
|
||||
str := fmt.Sprintf("attempt to execute disabled opcode %s",
|
||||
pop.opcode.name)
|
||||
return scriptError(ErrDisabledOpcode, str)
|
||||
}
|
||||
|
||||
// Always-illegal opcodes are fail on program counter.
|
||||
if pop.alwaysIllegal() {
|
||||
str := fmt.Sprintf("attempt to execute reserved opcode %s",
|
||||
pop.opcode.name)
|
||||
return scriptError(ErrReservedOpcode, str)
|
||||
}
|
||||
|
||||
// Note that this includes OP_RESERVED which counts as a push operation.
|
||||
if pop.opcode.value > OP_16 {
|
||||
vm.numOps++
|
||||
if vm.numOps > MaxOpsPerScript {
|
||||
str := fmt.Sprintf("exceeded max operation limit of %d",
|
||||
MaxOpsPerScript)
|
||||
return scriptError(ErrTooManyOperations, str)
|
||||
}
|
||||
|
||||
} else if len(pop.data) > MaxScriptElementSize {
|
||||
str := fmt.Sprintf("element size %d exceeds max allowed size %d",
|
||||
len(pop.data), MaxScriptElementSize)
|
||||
return scriptError(ErrElementTooBig, str)
|
||||
}
|
||||
|
||||
// Nothing left to do when this is not a conditional opcode and it is
|
||||
// not in an executing branch.
|
||||
if !vm.isBranchExecuting() && !pop.isConditional() {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Ensure all executed data push opcodes use the minimal encoding when
|
||||
// the minimal data verification flag is set.
|
||||
if vm.dstack.verifyMinimalData && vm.isBranchExecuting() &&
|
||||
pop.opcode.value >= 0 && pop.opcode.value <= OP_PUSHDATA4 {
|
||||
|
||||
if err := pop.checkMinimalDataPush(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return pop.opcode.opfunc(pop, vm)
|
||||
}
|
||||
|
||||
// disasm is a helper function to produce the output for DisasmPC and
|
||||
// DisasmScript. It produces the opcode prefixed by the program counter at the
|
||||
// provided position in the script. It does no error checking and leaves that
|
||||
// to the caller to provide a valid offset.
|
||||
func (vm *Engine) disasm(scriptIdx int, scriptOff int) string {
|
||||
return fmt.Sprintf("%02x:%04x: %s", scriptIdx, scriptOff,
|
||||
vm.scripts[scriptIdx][scriptOff].print(false))
|
||||
}
|
||||
|
||||
// validPC returns an error if the current script position is valid for
|
||||
// execution, nil otherwise.
|
||||
func (vm *Engine) validPC() error {
|
||||
if vm.scriptIdx >= len(vm.scripts) {
|
||||
str := fmt.Sprintf("past input scripts %v:%v %v:xxxx",
|
||||
vm.scriptIdx, vm.scriptOff, len(vm.scripts))
|
||||
return scriptError(ErrInvalidProgramCounter, str)
|
||||
}
|
||||
if vm.scriptOff >= len(vm.scripts[vm.scriptIdx]) {
|
||||
str := fmt.Sprintf("past input scripts %v:%v %v:%04d",
|
||||
vm.scriptIdx, vm.scriptOff, vm.scriptIdx,
|
||||
len(vm.scripts[vm.scriptIdx]))
|
||||
return scriptError(ErrInvalidProgramCounter, str)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// curPC returns either the current script and offset, or an error if the
|
||||
// position isn't valid.
|
||||
func (vm *Engine) curPC() (script int, off int, err error) {
|
||||
err = vm.validPC()
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
return vm.scriptIdx, vm.scriptOff, nil
|
||||
}
|
||||
|
||||
// isWitnessVersionActive returns true if a witness program was extracted
|
||||
// during the initialization of the Engine, and the program's version matches
|
||||
// the specified version.
|
||||
func (vm *Engine) isWitnessVersionActive(version uint) bool {
|
||||
return vm.witnessProgram != nil && uint(vm.witnessVersion) == version
|
||||
}
|
||||
|
||||
// verifyWitnessProgram validates the stored witness program using the passed
|
||||
// witness as input.
|
||||
func (vm *Engine) verifyWitnessProgram(witness [][]byte) error {
|
||||
if vm.isWitnessVersionActive(0) {
|
||||
switch len(vm.witnessProgram) {
|
||||
case payToWitnessPubKeyHashDataSize: // P2WKH
|
||||
// The witness stack should consist of exactly two
|
||||
// items: the signature, and the pubkey.
|
||||
if len(witness) != 2 {
|
||||
err := fmt.Sprintf("should have exactly two "+
|
||||
"items in witness, instead have %v", len(witness))
|
||||
return scriptError(ErrWitnessProgramMismatch, err)
|
||||
}
|
||||
|
||||
// Now we'll resume execution as if it were a regular
|
||||
// p2pkh transaction.
|
||||
pkScript, err := payToPubKeyHashScript(vm.witnessProgram)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
pops, err := parseScript(pkScript)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Set the stack to the provided witness stack, then
|
||||
// append the pkScript generated above as the next
|
||||
// script to execute.
|
||||
vm.scripts = append(vm.scripts, pops)
|
||||
vm.SetStack(witness)
|
||||
|
||||
case payToWitnessScriptHashDataSize: // P2WSH
|
||||
// Additionally, The witness stack MUST NOT be empty at
|
||||
// this point.
|
||||
if len(witness) == 0 {
|
||||
return scriptError(ErrWitnessProgramEmpty, "witness "+
|
||||
"program empty passed empty witness")
|
||||
}
|
||||
|
||||
// Obtain the witness script which should be the last
|
||||
// element in the passed stack. The size of the script
|
||||
// MUST NOT exceed the max script size.
|
||||
witnessScript := witness[len(witness)-1]
|
||||
if len(witnessScript) > MaxScriptSize {
|
||||
str := fmt.Sprintf("witnessScript size %d "+
|
||||
"is larger than max allowed size %d",
|
||||
len(witnessScript), MaxScriptSize)
|
||||
return scriptError(ErrScriptTooBig, str)
|
||||
}
|
||||
|
||||
// Ensure that the serialized pkScript at the end of
|
||||
// the witness stack matches the witness program.
|
||||
witnessHash := sha256.Sum256(witnessScript)
|
||||
if !bytes.Equal(witnessHash[:], vm.witnessProgram) {
|
||||
return scriptError(ErrWitnessProgramMismatch,
|
||||
"witness program hash mismatch")
|
||||
}
|
||||
|
||||
// With all the validity checks passed, parse the
|
||||
// script into individual op-codes so w can execute it
|
||||
// as the next script.
|
||||
pops, err := parseScript(witnessScript)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// The hash matched successfully, so use the witness as
|
||||
// the stack, and set the witnessScript to be the next
|
||||
// script executed.
|
||||
vm.scripts = append(vm.scripts, pops)
|
||||
vm.SetStack(witness[:len(witness)-1])
|
||||
|
||||
default:
|
||||
errStr := fmt.Sprintf("length of witness program "+
|
||||
"must either be %v or %v bytes, instead is %v bytes",
|
||||
payToWitnessPubKeyHashDataSize,
|
||||
payToWitnessScriptHashDataSize,
|
||||
len(vm.witnessProgram))
|
||||
return scriptError(ErrWitnessProgramWrongLength, errStr)
|
||||
}
|
||||
} else if vm.hasFlag(ScriptVerifyDiscourageUpgradeableWitnessProgram) {
|
||||
errStr := fmt.Sprintf("new witness program versions "+
|
||||
"invalid: %v", vm.witnessProgram)
|
||||
return scriptError(ErrDiscourageUpgradableWitnessProgram, errStr)
|
||||
} else {
|
||||
// If we encounter an unknown witness program version and we
|
||||
// aren't discouraging future unknown witness based soft-forks,
|
||||
// then we de-activate the segwit behavior within the VM for
|
||||
// the remainder of execution.
|
||||
vm.witnessProgram = nil
|
||||
}
|
||||
|
||||
if vm.isWitnessVersionActive(0) {
|
||||
// All elements within the witness stack must not be greater
|
||||
// than the maximum bytes which are allowed to be pushed onto
|
||||
// the stack.
|
||||
for _, witElement := range vm.GetStack() {
|
||||
if len(witElement) > MaxScriptElementSize {
|
||||
str := fmt.Sprintf("element size %d exceeds "+
|
||||
"max allowed size %d", len(witElement),
|
||||
MaxScriptElementSize)
|
||||
return scriptError(ErrElementTooBig, str)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// DisasmPC returns the string for the disassembly of the opcode that will be
|
||||
// next to execute when Step() is called.
|
||||
func (vm *Engine) DisasmPC() (string, error) {
|
||||
scriptIdx, scriptOff, err := vm.curPC()
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return vm.disasm(scriptIdx, scriptOff), nil
|
||||
}
|
||||
|
||||
// DisasmScript returns the disassembly string for the script at the requested
|
||||
// offset index. Index 0 is the signature script and 1 is the public key
|
||||
// script.
|
||||
func (vm *Engine) DisasmScript(idx int) (string, error) {
|
||||
if idx >= len(vm.scripts) {
|
||||
str := fmt.Sprintf("script index %d >= total scripts %d", idx,
|
||||
len(vm.scripts))
|
||||
return "", scriptError(ErrInvalidIndex, str)
|
||||
}
|
||||
|
||||
var disstr string
|
||||
for i := range vm.scripts[idx] {
|
||||
disstr = disstr + vm.disasm(idx, i) + "\n"
|
||||
}
|
||||
return disstr, nil
|
||||
}
|
||||
|
||||
// CheckErrorCondition returns nil if the running script has ended and was
|
||||
// successful, leaving a a true boolean on the stack. An error otherwise,
|
||||
// including if the script has not finished.
|
||||
func (vm *Engine) CheckErrorCondition(finalScript bool) error {
|
||||
// Check execution is actually done. When pc is past the end of script
|
||||
// array there are no more scripts to run.
|
||||
if vm.scriptIdx < len(vm.scripts) {
|
||||
return scriptError(ErrScriptUnfinished,
|
||||
"error check when script unfinished")
|
||||
}
|
||||
|
||||
// If we're in version zero witness execution mode, and this was the
|
||||
// final script, then the stack MUST be clean in order to maintain
|
||||
// compatibility with BIP16.
|
||||
if finalScript && vm.isWitnessVersionActive(0) && vm.dstack.Depth() != 1 {
|
||||
return scriptError(ErrEvalFalse, "witness program must "+
|
||||
"have clean stack")
|
||||
}
|
||||
|
||||
if finalScript && vm.hasFlag(ScriptVerifyCleanStack) &&
|
||||
vm.dstack.Depth() != 1 {
|
||||
|
||||
str := fmt.Sprintf("stack contains %d unexpected items",
|
||||
vm.dstack.Depth()-1)
|
||||
return scriptError(ErrCleanStack, str)
|
||||
} else if vm.dstack.Depth() < 1 {
|
||||
return scriptError(ErrEmptyStack,
|
||||
"stack empty at end of script execution")
|
||||
}
|
||||
|
||||
v, err := vm.dstack.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !v {
|
||||
// Log interesting data.
|
||||
log.Tracef("%v", newLogClosure(func() string {
|
||||
dis0, _ := vm.DisasmScript(0)
|
||||
dis1, _ := vm.DisasmScript(1)
|
||||
return fmt.Sprintf("scripts failed: script0: %s\n"+
|
||||
"script1: %s", dis0, dis1)
|
||||
}))
|
||||
return scriptError(ErrEvalFalse,
|
||||
"false stack entry at end of script execution")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Step will execute the next instruction and move the program counter to the
|
||||
// next opcode in the script, or the next script if the current has ended. Step
|
||||
// will return true in the case that the last opcode was successfully executed.
|
||||
//
|
||||
// The result of calling Step or any other method is undefined if an error is
|
||||
// returned.
|
||||
func (vm *Engine) Step() (done bool, err error) {
|
||||
// Verify that it is pointing to a valid script address.
|
||||
err = vm.validPC()
|
||||
if err != nil {
|
||||
return true, err
|
||||
}
|
||||
opcode := &vm.scripts[vm.scriptIdx][vm.scriptOff]
|
||||
vm.scriptOff++
|
||||
|
||||
// Execute the opcode while taking into account several things such as
|
||||
// disabled opcodes, illegal opcodes, maximum allowed operations per
|
||||
// script, maximum script element sizes, and conditionals.
|
||||
err = vm.executeOpcode(opcode)
|
||||
if err != nil {
|
||||
return true, err
|
||||
}
|
||||
|
||||
// The number of elements in the combination of the data and alt stacks
|
||||
// must not exceed the maximum number of stack elements allowed.
|
||||
combinedStackSize := vm.dstack.Depth() + vm.astack.Depth()
|
||||
if combinedStackSize > MaxStackSize {
|
||||
str := fmt.Sprintf("combined stack size %d > max allowed %d",
|
||||
combinedStackSize, MaxStackSize)
|
||||
return false, scriptError(ErrStackOverflow, str)
|
||||
}
|
||||
|
||||
// Prepare for next instruction.
|
||||
if vm.scriptOff >= len(vm.scripts[vm.scriptIdx]) {
|
||||
// Illegal to have an `if' that straddles two scripts.
|
||||
if err == nil && len(vm.condStack) != 0 {
|
||||
return false, scriptError(ErrUnbalancedConditional,
|
||||
"end of script reached in conditional execution")
|
||||
}
|
||||
|
||||
// Alt stack doesn't persist.
|
||||
_ = vm.astack.DropN(vm.astack.Depth())
|
||||
|
||||
vm.numOps = 0 // number of ops is per script.
|
||||
vm.scriptOff = 0
|
||||
if vm.scriptIdx == 0 && vm.bip16 {
|
||||
vm.scriptIdx++
|
||||
vm.savedFirstStack = vm.GetStack()
|
||||
} else if vm.scriptIdx == 1 && vm.bip16 {
|
||||
// Put us past the end for CheckErrorCondition()
|
||||
vm.scriptIdx++
|
||||
// Check script ran successfully and pull the script
|
||||
// out of the first stack and execute that.
|
||||
err := vm.CheckErrorCondition(false)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
script := vm.savedFirstStack[len(vm.savedFirstStack)-1]
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
vm.scripts = append(vm.scripts, pops)
|
||||
|
||||
// Set stack to be the stack from first script minus the
|
||||
// script itself
|
||||
vm.SetStack(vm.savedFirstStack[:len(vm.savedFirstStack)-1])
|
||||
} else if (vm.scriptIdx == 1 && vm.witnessProgram != nil) ||
|
||||
(vm.scriptIdx == 2 && vm.witnessProgram != nil && vm.bip16) { // Nested P2SH.
|
||||
|
||||
vm.scriptIdx++
|
||||
|
||||
witness := vm.tx.TxIn[vm.txIdx].Witness
|
||||
if err := vm.verifyWitnessProgram(witness); err != nil {
|
||||
return false, err
|
||||
}
|
||||
} else {
|
||||
vm.scriptIdx++
|
||||
}
|
||||
// there are zero length scripts in the wild
|
||||
if vm.scriptIdx < len(vm.scripts) && vm.scriptOff >= len(vm.scripts[vm.scriptIdx]) {
|
||||
vm.scriptIdx++
|
||||
}
|
||||
vm.lastCodeSep = 0
|
||||
if vm.scriptIdx >= len(vm.scripts) {
|
||||
return true, nil
|
||||
}
|
||||
}
|
||||
return false, nil
|
||||
}
|
||||
|
||||
// Execute will execute all scripts in the script engine and return either nil
|
||||
// for successful validation or an error if one occurred.
|
||||
func (vm *Engine) Execute() (err error) {
|
||||
done := false
|
||||
for !done {
|
||||
log.Tracef("%v", newLogClosure(func() string {
|
||||
dis, err := vm.DisasmPC()
|
||||
if err != nil {
|
||||
return fmt.Sprintf("stepping (%v)", err)
|
||||
}
|
||||
return fmt.Sprintf("stepping %v", dis)
|
||||
}))
|
||||
|
||||
done, err = vm.Step()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
log.Tracef("%v", newLogClosure(func() string {
|
||||
var dstr, astr string
|
||||
|
||||
// if we're tracing, dump the stacks.
|
||||
if vm.dstack.Depth() != 0 {
|
||||
dstr = "Stack:\n" + vm.dstack.String()
|
||||
}
|
||||
if vm.astack.Depth() != 0 {
|
||||
astr = "AltStack:\n" + vm.astack.String()
|
||||
}
|
||||
|
||||
return dstr + astr
|
||||
}))
|
||||
}
|
||||
|
||||
return vm.CheckErrorCondition(true)
|
||||
}
|
||||
|
||||
// subScript returns the script since the last OP_CODESEPARATOR.
|
||||
func (vm *Engine) subScript() []parsedOpcode {
|
||||
return vm.scripts[vm.scriptIdx][vm.lastCodeSep:]
|
||||
}
|
||||
|
||||
// checkHashTypeEncoding returns whether or not the passed hashtype adheres to
|
||||
// the strict encoding requirements if enabled.
|
||||
func (vm *Engine) checkHashTypeEncoding(hashType SigHashType) error {
|
||||
if !vm.hasFlag(ScriptVerifyStrictEncoding) {
|
||||
return nil
|
||||
}
|
||||
|
||||
sigHashType := hashType & ^SigHashAnyOneCanPay
|
||||
if sigHashType < SigHashAll || sigHashType > SigHashSingle {
|
||||
str := fmt.Sprintf("invalid hash type 0x%x", hashType)
|
||||
return scriptError(ErrInvalidSigHashType, str)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkPubKeyEncoding returns whether or not the passed public key adheres to
|
||||
// the strict encoding requirements if enabled.
|
||||
func (vm *Engine) checkPubKeyEncoding(pubKey []byte) error {
|
||||
if vm.hasFlag(ScriptVerifyWitnessPubKeyType) &&
|
||||
vm.isWitnessVersionActive(0) && !btcec.IsCompressedPubKey(pubKey) {
|
||||
|
||||
str := "only uncompressed keys are accepted post-segwit"
|
||||
return scriptError(ErrWitnessPubKeyType, str)
|
||||
}
|
||||
|
||||
if !vm.hasFlag(ScriptVerifyStrictEncoding) {
|
||||
return nil
|
||||
}
|
||||
|
||||
if len(pubKey) == 33 && (pubKey[0] == 0x02 || pubKey[0] == 0x03) {
|
||||
// Compressed
|
||||
return nil
|
||||
}
|
||||
if len(pubKey) == 65 && pubKey[0] == 0x04 {
|
||||
// Uncompressed
|
||||
return nil
|
||||
}
|
||||
|
||||
return scriptError(ErrPubKeyType, "unsupported public key type")
|
||||
}
|
||||
|
||||
// checkSignatureEncoding returns whether or not the passed signature adheres to
|
||||
// the strict encoding requirements if enabled.
|
||||
func (vm *Engine) checkSignatureEncoding(sig []byte) error {
|
||||
if !vm.hasFlag(ScriptVerifyDERSignatures) &&
|
||||
!vm.hasFlag(ScriptVerifyLowS) &&
|
||||
!vm.hasFlag(ScriptVerifyStrictEncoding) {
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// The format of a DER encoded signature is as follows:
|
||||
//
|
||||
// 0x30 <total length> 0x02 <length of R> <R> 0x02 <length of S> <S>
|
||||
// - 0x30 is the ASN.1 identifier for a sequence
|
||||
// - Total length is 1 byte and specifies length of all remaining data
|
||||
// - 0x02 is the ASN.1 identifier that specifies an integer follows
|
||||
// - Length of R is 1 byte and specifies how many bytes R occupies
|
||||
// - R is the arbitrary length big-endian encoded number which
|
||||
// represents the R value of the signature. DER encoding dictates
|
||||
// that the value must be encoded using the minimum possible number
|
||||
// of bytes. This implies the first byte can only be null if the
|
||||
// highest bit of the next byte is set in order to prevent it from
|
||||
// being interpreted as a negative number.
|
||||
// - 0x02 is once again the ASN.1 integer identifier
|
||||
// - Length of S is 1 byte and specifies how many bytes S occupies
|
||||
// - S is the arbitrary length big-endian encoded number which
|
||||
// represents the S value of the signature. The encoding rules are
|
||||
// identical as those for R.
|
||||
|
||||
// Minimum length is when both numbers are 1 byte each.
|
||||
// 0x30 + <1-byte> + 0x02 + 0x01 + <byte> + 0x2 + 0x01 + <byte>
|
||||
if len(sig) < 8 {
|
||||
// Too short
|
||||
str := fmt.Sprintf("malformed signature: too short: %d < 8",
|
||||
len(sig))
|
||||
return scriptError(ErrSigDER, str)
|
||||
}
|
||||
|
||||
// Maximum length is when both numbers are 33 bytes each. It is 33
|
||||
// bytes because a 256-bit integer requires 32 bytes and an additional
|
||||
// leading null byte might required if the high bit is set in the value.
|
||||
// 0x30 + <1-byte> + 0x02 + 0x21 + <33 bytes> + 0x2 + 0x21 + <33 bytes>
|
||||
if len(sig) > 72 {
|
||||
// Too long
|
||||
str := fmt.Sprintf("malformed signature: too long: %d > 72",
|
||||
len(sig))
|
||||
return scriptError(ErrSigDER, str)
|
||||
}
|
||||
if sig[0] != 0x30 {
|
||||
// Wrong type
|
||||
str := fmt.Sprintf("malformed signature: format has wrong "+
|
||||
"type: 0x%x", sig[0])
|
||||
return scriptError(ErrSigDER, str)
|
||||
}
|
||||
if int(sig[1]) != len(sig)-2 {
|
||||
// Invalid length
|
||||
str := fmt.Sprintf("malformed signature: bad length: %d != %d",
|
||||
sig[1], len(sig)-2)
|
||||
return scriptError(ErrSigDER, str)
|
||||
}
|
||||
|
||||
rLen := int(sig[3])
|
||||
|
||||
// Make sure S is inside the signature.
|
||||
if rLen+5 > len(sig) {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: S out of bounds")
|
||||
}
|
||||
|
||||
sLen := int(sig[rLen+5])
|
||||
|
||||
// The length of the elements does not match the length of the
|
||||
// signature.
|
||||
if rLen+sLen+6 != len(sig) {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: invalid R length")
|
||||
}
|
||||
|
||||
// R elements must be integers.
|
||||
if sig[2] != 0x02 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: missing first integer marker")
|
||||
}
|
||||
|
||||
// Zero-length integers are not allowed for R.
|
||||
if rLen == 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: R length is zero")
|
||||
}
|
||||
|
||||
// R must not be negative.
|
||||
if sig[4]&0x80 != 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: R value is negative")
|
||||
}
|
||||
|
||||
// Null bytes at the start of R are not allowed, unless R would
|
||||
// otherwise be interpreted as a negative number.
|
||||
if rLen > 1 && sig[4] == 0x00 && sig[5]&0x80 == 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: invalid R value")
|
||||
}
|
||||
|
||||
// S elements must be integers.
|
||||
if sig[rLen+4] != 0x02 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: missing second integer marker")
|
||||
}
|
||||
|
||||
// Zero-length integers are not allowed for S.
|
||||
if sLen == 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: S length is zero")
|
||||
}
|
||||
|
||||
// S must not be negative.
|
||||
if sig[rLen+6]&0x80 != 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: S value is negative")
|
||||
}
|
||||
|
||||
// Null bytes at the start of S are not allowed, unless S would
|
||||
// otherwise be interpreted as a negative number.
|
||||
if sLen > 1 && sig[rLen+6] == 0x00 && sig[rLen+7]&0x80 == 0 {
|
||||
return scriptError(ErrSigDER,
|
||||
"malformed signature: invalid S value")
|
||||
}
|
||||
|
||||
// Verify the S value is <= half the order of the curve. This check is
|
||||
// done because when it is higher, the complement modulo the order can
|
||||
// be used instead which is a shorter encoding by 1 byte. Further,
|
||||
// without enforcing this, it is possible to replace a signature in a
|
||||
// valid transaction with the complement while still being a valid
|
||||
// signature that verifies. This would result in changing the
|
||||
// transaction hash and thus is source of malleability.
|
||||
if vm.hasFlag(ScriptVerifyLowS) {
|
||||
sValue := new(big.Int).SetBytes(sig[rLen+6 : rLen+6+sLen])
|
||||
if sValue.Cmp(halfOrder) > 0 {
|
||||
return scriptError(ErrSigHighS,
|
||||
"signature is not canonical due to "+
|
||||
"unnecessarily high S value")
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// getStack returns the contents of stack as a byte array bottom up
|
||||
func getStack(stack *stack) [][]byte {
|
||||
array := make([][]byte, stack.Depth())
|
||||
for i := range array {
|
||||
// PeekByteArry can't fail due to overflow, already checked
|
||||
array[len(array)-i-1], _ = stack.PeekByteArray(int32(i))
|
||||
}
|
||||
return array
|
||||
}
|
||||
|
||||
// setStack sets the stack to the contents of the array where the last item in
|
||||
// the array is the top item in the stack.
|
||||
func setStack(stack *stack, data [][]byte) {
|
||||
// This can not error. Only errors are for invalid arguments.
|
||||
_ = stack.DropN(stack.Depth())
|
||||
|
||||
for i := range data {
|
||||
stack.PushByteArray(data[i])
|
||||
}
|
||||
}
|
||||
|
||||
// GetStack returns the contents of the primary stack as an array. where the
|
||||
// last item in the array is the top of the stack.
|
||||
func (vm *Engine) GetStack() [][]byte {
|
||||
return getStack(&vm.dstack)
|
||||
}
|
||||
|
||||
// SetStack sets the contents of the primary stack to the contents of the
|
||||
// provided array where the last item in the array will be the top of the stack.
|
||||
func (vm *Engine) SetStack(data [][]byte) {
|
||||
setStack(&vm.dstack, data)
|
||||
}
|
||||
|
||||
// GetAltStack returns the contents of the alternate stack as an array where the
|
||||
// last item in the array is the top of the stack.
|
||||
func (vm *Engine) GetAltStack() [][]byte {
|
||||
return getStack(&vm.astack)
|
||||
}
|
||||
|
||||
// SetAltStack sets the contents of the alternate stack to the contents of the
|
||||
// provided array where the last item in the array will be the top of the stack.
|
||||
func (vm *Engine) SetAltStack(data [][]byte) {
|
||||
setStack(&vm.astack, data)
|
||||
}
|
||||
|
||||
// NewEngine returns a new script engine for the provided public key script,
|
||||
// transaction, and input index. The flags modify the behavior of the script
|
||||
// engine according to the description provided by each flag.
|
||||
func NewEngine(scriptPubKey []byte, tx *wire.MsgTx, txIdx int, flags ScriptFlags,
|
||||
sigCache *SigCache, hashCache *TxSigHashes, inputAmount int64) (*Engine, error) {
|
||||
|
||||
// The provided transaction input index must refer to a valid input.
|
||||
if txIdx < 0 || txIdx >= len(tx.TxIn) {
|
||||
str := fmt.Sprintf("transaction input index %d is negative or "+
|
||||
">= %d", txIdx, len(tx.TxIn))
|
||||
return nil, scriptError(ErrInvalidIndex, str)
|
||||
}
|
||||
scriptSig := tx.TxIn[txIdx].SignatureScript
|
||||
|
||||
// When both the signature script and public key script are empty the
|
||||
// result is necessarily an error since the stack would end up being
|
||||
// empty which is equivalent to a false top element. Thus, just return
|
||||
// the relevant error now as an optimization.
|
||||
if len(scriptSig) == 0 && len(scriptPubKey) == 0 {
|
||||
return nil, scriptError(ErrEvalFalse,
|
||||
"false stack entry at end of script execution")
|
||||
}
|
||||
|
||||
// The clean stack flag (ScriptVerifyCleanStack) is not allowed without
|
||||
// either the the pay-to-script-hash (P2SH) evaluation (ScriptBip16)
|
||||
// flag or the Segregated Witness (ScriptVerifyWitness) flag.
|
||||
//
|
||||
// Recall that evaluating a P2SH script without the flag set results in
|
||||
// non-P2SH evaluation which leaves the P2SH inputs on the stack.
|
||||
// Thus, allowing the clean stack flag without the P2SH flag would make
|
||||
// it possible to have a situation where P2SH would not be a soft fork
|
||||
// when it should be. The same goes for segwit which will pull in
|
||||
// additional scripts for execution from the witness stack.
|
||||
vm := Engine{flags: flags, sigCache: sigCache, hashCache: hashCache,
|
||||
inputAmount: inputAmount}
|
||||
if vm.hasFlag(ScriptVerifyCleanStack) && (!vm.hasFlag(ScriptBip16) &&
|
||||
!vm.hasFlag(ScriptVerifyWitness)) {
|
||||
return nil, scriptError(ErrInvalidFlags,
|
||||
"invalid flags combination")
|
||||
}
|
||||
|
||||
// The signature script must only contain data pushes when the
|
||||
// associated flag is set.
|
||||
if vm.hasFlag(ScriptVerifySigPushOnly) && !IsPushOnlyScript(scriptSig) {
|
||||
return nil, scriptError(ErrNotPushOnly,
|
||||
"signature script is not push only")
|
||||
}
|
||||
|
||||
// The engine stores the scripts in parsed form using a slice. This
|
||||
// allows multiple scripts to be executed in sequence. For example,
|
||||
// with a pay-to-script-hash transaction, there will be ultimately be
|
||||
// a third script to execute.
|
||||
scripts := [][]byte{scriptSig, scriptPubKey}
|
||||
vm.scripts = make([][]parsedOpcode, len(scripts))
|
||||
for i, scr := range scripts {
|
||||
if len(scr) > MaxScriptSize {
|
||||
str := fmt.Sprintf("script size %d is larger than max "+
|
||||
"allowed size %d", len(scr), MaxScriptSize)
|
||||
return nil, scriptError(ErrScriptTooBig, str)
|
||||
}
|
||||
var err error
|
||||
vm.scripts[i], err = parseScript(scr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// Advance the program counter to the public key script if the signature
|
||||
// script is empty since there is nothing to execute for it in that
|
||||
// case.
|
||||
if len(scripts[0]) == 0 {
|
||||
vm.scriptIdx++
|
||||
}
|
||||
|
||||
if vm.hasFlag(ScriptBip16) && isScriptHash(vm.scripts[1]) {
|
||||
// Only accept input scripts that push data for P2SH.
|
||||
if !isPushOnly(vm.scripts[0]) {
|
||||
return nil, scriptError(ErrNotPushOnly,
|
||||
"pay to script hash is not push only")
|
||||
}
|
||||
vm.bip16 = true
|
||||
}
|
||||
if vm.hasFlag(ScriptVerifyMinimalData) {
|
||||
vm.dstack.verifyMinimalData = true
|
||||
vm.astack.verifyMinimalData = true
|
||||
}
|
||||
|
||||
// Check to see if we should execute in witness verification mode
|
||||
// according to the set flags. We check both the pkScript, and sigScript
|
||||
// here since in the case of nested p2sh, the scriptSig will be a valid
|
||||
// witness program. For nested p2sh, all the bytes after the first data
|
||||
// push should *exactly* match the witness program template.
|
||||
if vm.hasFlag(ScriptVerifyWitness) {
|
||||
// If witness evaluation is enabled, then P2SH MUST also be
|
||||
// active.
|
||||
if !vm.hasFlag(ScriptBip16) {
|
||||
errStr := "P2SH must be enabled to do witness verification"
|
||||
return nil, scriptError(ErrInvalidFlags, errStr)
|
||||
}
|
||||
|
||||
var witProgram []byte
|
||||
|
||||
switch {
|
||||
case isWitnessProgram(vm.scripts[1]):
|
||||
// The scriptSig must be *empty* for all native witness
|
||||
// programs, otherwise we introduce malleability.
|
||||
if len(scriptSig) != 0 {
|
||||
errStr := "native witness program cannot " +
|
||||
"also have a signature script"
|
||||
return nil, scriptError(ErrWitnessMalleated, errStr)
|
||||
}
|
||||
|
||||
witProgram = scriptPubKey
|
||||
case len(tx.TxIn[txIdx].Witness) != 0 && vm.bip16:
|
||||
// The sigScript MUST be *exactly* a single canonical
|
||||
// data push of the witness program, otherwise we
|
||||
// reintroduce malleability.
|
||||
sigPops := vm.scripts[0]
|
||||
if len(sigPops) == 1 && canonicalPush(sigPops[0]) &&
|
||||
IsWitnessProgram(sigPops[0].data) {
|
||||
|
||||
witProgram = sigPops[0].data
|
||||
} else {
|
||||
errStr := "signature script for witness " +
|
||||
"nested p2sh is not canonical"
|
||||
return nil, scriptError(ErrWitnessMalleatedP2SH, errStr)
|
||||
}
|
||||
}
|
||||
|
||||
if witProgram != nil {
|
||||
var err error
|
||||
vm.witnessVersion, vm.witnessProgram, err = ExtractWitnessProgramInfo(witProgram)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
// If we didn't find a witness program in either the
|
||||
// pkScript or as a datapush within the sigScript, then
|
||||
// there MUST NOT be any witness data associated with
|
||||
// the input being validated.
|
||||
if vm.witnessProgram == nil && len(tx.TxIn[txIdx].Witness) != 0 {
|
||||
errStr := "non-witness inputs cannot have a witness"
|
||||
return nil, scriptError(ErrWitnessUnexpected, errStr)
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
vm.tx = *tx
|
||||
vm.txIdx = txIdx
|
||||
|
||||
return &vm, nil
|
||||
}
|
||||
+427
@@ -0,0 +1,427 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
)
|
||||
|
||||
// TestBadPC sets the pc to a deliberately bad result then confirms that Step()
|
||||
// and Disasm fail correctly.
|
||||
func TestBadPC(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
script, off int
|
||||
}{
|
||||
{script: 2, off: 0},
|
||||
{script: 0, off: 2},
|
||||
}
|
||||
|
||||
// tx with almost empty scripts.
|
||||
tx := &wire.MsgTx{
|
||||
Version: 1,
|
||||
TxIn: []*wire.TxIn{
|
||||
{
|
||||
PreviousOutPoint: wire.OutPoint{
|
||||
Hash: chainhash.Hash([32]byte{
|
||||
0xc9, 0x97, 0xa5, 0xe5,
|
||||
0x6e, 0x10, 0x41, 0x02,
|
||||
0xfa, 0x20, 0x9c, 0x6a,
|
||||
0x85, 0x2d, 0xd9, 0x06,
|
||||
0x60, 0xa2, 0x0b, 0x2d,
|
||||
0x9c, 0x35, 0x24, 0x23,
|
||||
0xed, 0xce, 0x25, 0x85,
|
||||
0x7f, 0xcd, 0x37, 0x04,
|
||||
}),
|
||||
Index: 0,
|
||||
},
|
||||
SignatureScript: mustParseShortForm("NOP"),
|
||||
Sequence: 4294967295,
|
||||
},
|
||||
},
|
||||
TxOut: []*wire.TxOut{{
|
||||
Value: 1000000000,
|
||||
PkScript: nil,
|
||||
}},
|
||||
LockTime: 0,
|
||||
}
|
||||
pkScript := mustParseShortForm("NOP")
|
||||
|
||||
for _, test := range tests {
|
||||
vm, err := NewEngine(pkScript, tx, 0, 0, nil, nil, -1)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to create script: %v", err)
|
||||
}
|
||||
|
||||
// set to after all scripts
|
||||
vm.scriptIdx = test.script
|
||||
vm.scriptOff = test.off
|
||||
|
||||
_, err = vm.Step()
|
||||
if err == nil {
|
||||
t.Errorf("Step with invalid pc (%v) succeeds!", test)
|
||||
continue
|
||||
}
|
||||
|
||||
_, err = vm.DisasmPC()
|
||||
if err == nil {
|
||||
t.Errorf("DisasmPC with invalid pc (%v) succeeds!",
|
||||
test)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestCheckErrorCondition tests the execute early test in CheckErrorCondition()
|
||||
// since most code paths are tested elsewhere.
|
||||
func TestCheckErrorCondition(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// tx with almost empty scripts.
|
||||
tx := &wire.MsgTx{
|
||||
Version: 1,
|
||||
TxIn: []*wire.TxIn{{
|
||||
PreviousOutPoint: wire.OutPoint{
|
||||
Hash: chainhash.Hash([32]byte{
|
||||
0xc9, 0x97, 0xa5, 0xe5,
|
||||
0x6e, 0x10, 0x41, 0x02,
|
||||
0xfa, 0x20, 0x9c, 0x6a,
|
||||
0x85, 0x2d, 0xd9, 0x06,
|
||||
0x60, 0xa2, 0x0b, 0x2d,
|
||||
0x9c, 0x35, 0x24, 0x23,
|
||||
0xed, 0xce, 0x25, 0x85,
|
||||
0x7f, 0xcd, 0x37, 0x04,
|
||||
}),
|
||||
Index: 0,
|
||||
},
|
||||
SignatureScript: nil,
|
||||
Sequence: 4294967295,
|
||||
}},
|
||||
TxOut: []*wire.TxOut{{
|
||||
Value: 1000000000,
|
||||
PkScript: nil,
|
||||
}},
|
||||
LockTime: 0,
|
||||
}
|
||||
pkScript := mustParseShortForm("NOP NOP NOP NOP NOP NOP NOP NOP NOP" +
|
||||
" NOP TRUE")
|
||||
|
||||
vm, err := NewEngine(pkScript, tx, 0, 0, nil, nil, 0)
|
||||
if err != nil {
|
||||
t.Errorf("failed to create script: %v", err)
|
||||
}
|
||||
|
||||
for i := 0; i < len(pkScript)-1; i++ {
|
||||
done, err := vm.Step()
|
||||
if err != nil {
|
||||
t.Fatalf("failed to step %dth time: %v", i, err)
|
||||
}
|
||||
if done {
|
||||
t.Fatalf("finshed early on %dth time", i)
|
||||
}
|
||||
|
||||
err = vm.CheckErrorCondition(false)
|
||||
if !IsErrorCode(err, ErrScriptUnfinished) {
|
||||
t.Fatalf("got unexepected error %v on %dth iteration",
|
||||
err, i)
|
||||
}
|
||||
}
|
||||
done, err := vm.Step()
|
||||
if err != nil {
|
||||
t.Fatalf("final step failed %v", err)
|
||||
}
|
||||
if !done {
|
||||
t.Fatalf("final step isn't done!")
|
||||
}
|
||||
|
||||
err = vm.CheckErrorCondition(false)
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error %v on final check", err)
|
||||
}
|
||||
}
|
||||
|
||||
// TestInvalidFlagCombinations ensures the script engine returns the expected
|
||||
// error when disallowed flag combinations are specified.
|
||||
func TestInvalidFlagCombinations(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []ScriptFlags{
|
||||
ScriptVerifyCleanStack,
|
||||
}
|
||||
|
||||
// tx with almost empty scripts.
|
||||
tx := &wire.MsgTx{
|
||||
Version: 1,
|
||||
TxIn: []*wire.TxIn{
|
||||
{
|
||||
PreviousOutPoint: wire.OutPoint{
|
||||
Hash: chainhash.Hash([32]byte{
|
||||
0xc9, 0x97, 0xa5, 0xe5,
|
||||
0x6e, 0x10, 0x41, 0x02,
|
||||
0xfa, 0x20, 0x9c, 0x6a,
|
||||
0x85, 0x2d, 0xd9, 0x06,
|
||||
0x60, 0xa2, 0x0b, 0x2d,
|
||||
0x9c, 0x35, 0x24, 0x23,
|
||||
0xed, 0xce, 0x25, 0x85,
|
||||
0x7f, 0xcd, 0x37, 0x04,
|
||||
}),
|
||||
Index: 0,
|
||||
},
|
||||
SignatureScript: []uint8{OP_NOP},
|
||||
Sequence: 4294967295,
|
||||
},
|
||||
},
|
||||
TxOut: []*wire.TxOut{
|
||||
{
|
||||
Value: 1000000000,
|
||||
PkScript: nil,
|
||||
},
|
||||
},
|
||||
LockTime: 0,
|
||||
}
|
||||
pkScript := []byte{OP_NOP}
|
||||
|
||||
for i, test := range tests {
|
||||
_, err := NewEngine(pkScript, tx, 0, test, nil, nil, -1)
|
||||
if !IsErrorCode(err, ErrInvalidFlags) {
|
||||
t.Fatalf("TestInvalidFlagCombinations #%d unexpected "+
|
||||
"error: %v", i, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestCheckPubKeyEncoding ensures the internal checkPubKeyEncoding function
|
||||
// works as expected.
|
||||
func TestCheckPubKeyEncoding(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
key []byte
|
||||
isValid bool
|
||||
}{
|
||||
{
|
||||
name: "uncompressed ok",
|
||||
key: hexToBytes("0411db93e1dcdb8a016b49840f8c53bc1eb68" +
|
||||
"a382e97b1482ecad7b148a6909a5cb2e0eaddfb84ccf" +
|
||||
"9744464f82e160bfa9b8b64f9d4c03f999b8643f656b" +
|
||||
"412a3"),
|
||||
isValid: true,
|
||||
},
|
||||
{
|
||||
name: "compressed ok",
|
||||
key: hexToBytes("02ce0b14fb842b1ba549fdd675c98075f12e9" +
|
||||
"c510f8ef52bd021a9a1f4809d3b4d"),
|
||||
isValid: true,
|
||||
},
|
||||
{
|
||||
name: "compressed ok",
|
||||
key: hexToBytes("032689c7c2dab13309fb143e0e8fe39634252" +
|
||||
"1887e976690b6b47f5b2a4b7d448e"),
|
||||
isValid: true,
|
||||
},
|
||||
{
|
||||
name: "hybrid",
|
||||
key: hexToBytes("0679be667ef9dcbbac55a06295ce870b07029" +
|
||||
"bfcdb2dce28d959f2815b16f81798483ada7726a3c46" +
|
||||
"55da4fbfc0e1108a8fd17b448a68554199c47d08ffb1" +
|
||||
"0d4b8"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "empty",
|
||||
key: nil,
|
||||
isValid: false,
|
||||
},
|
||||
}
|
||||
|
||||
vm := Engine{flags: ScriptVerifyStrictEncoding}
|
||||
for _, test := range tests {
|
||||
err := vm.checkPubKeyEncoding(test.key)
|
||||
if err != nil && test.isValid {
|
||||
t.Errorf("checkSignatureEncoding test '%s' failed "+
|
||||
"when it should have succeeded: %v", test.name,
|
||||
err)
|
||||
} else if err == nil && !test.isValid {
|
||||
t.Errorf("checkSignatureEncooding test '%s' succeeded "+
|
||||
"when it should have failed", test.name)
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// TestCheckSignatureEncoding ensures the internal checkSignatureEncoding
|
||||
// function works as expected.
|
||||
func TestCheckSignatureEncoding(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
sig []byte
|
||||
isValid bool
|
||||
}{
|
||||
{
|
||||
name: "valid signature",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: true,
|
||||
},
|
||||
{
|
||||
name: "empty.",
|
||||
sig: nil,
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "bad magic",
|
||||
sig: hexToBytes("314402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "bad 1st int marker magic",
|
||||
sig: hexToBytes("304403204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "bad 2nd int marker",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41032018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "short len",
|
||||
sig: hexToBytes("304302204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "long len",
|
||||
sig: hexToBytes("304502204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "long X",
|
||||
sig: hexToBytes("304402424e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "long Y",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022118152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "short Y",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41021918152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "trailing crap",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d0901"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "X == N ",
|
||||
sig: hexToBytes("30440220fffffffffffffffffffffffffffff" +
|
||||
"ffebaaedce6af48a03bbfd25e8cd0364141022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "X == N ",
|
||||
sig: hexToBytes("30440220fffffffffffffffffffffffffffff" +
|
||||
"ffebaaedce6af48a03bbfd25e8cd0364142022018152" +
|
||||
"2ec8eca07de4860a4acdd12909d831cc56cbbac46220" +
|
||||
"82221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "Y == N",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd410220fffff" +
|
||||
"ffffffffffffffffffffffffffebaaedce6af48a03bb" +
|
||||
"fd25e8cd0364141"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "Y > N",
|
||||
sig: hexToBytes("304402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd410220fffff" +
|
||||
"ffffffffffffffffffffffffffebaaedce6af48a03bb" +
|
||||
"fd25e8cd0364142"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "0 len X",
|
||||
sig: hexToBytes("302402000220181522ec8eca07de4860a4acd" +
|
||||
"d12909d831cc56cbbac4622082221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "0 len Y",
|
||||
sig: hexToBytes("302402204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd410200"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "extra R padding",
|
||||
sig: hexToBytes("30450221004e45e16932b8af514961a1d3a1a" +
|
||||
"25fdf3f4f7732e9d624c6c61548ab5fb8cd410220181" +
|
||||
"522ec8eca07de4860a4acdd12909d831cc56cbbac462" +
|
||||
"2082221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
{
|
||||
name: "extra S padding",
|
||||
sig: hexToBytes("304502204e45e16932b8af514961a1d3a1a25" +
|
||||
"fdf3f4f7732e9d624c6c61548ab5fb8cd41022100181" +
|
||||
"522ec8eca07de4860a4acdd12909d831cc56cbbac462" +
|
||||
"2082221a8768d1d09"),
|
||||
isValid: false,
|
||||
},
|
||||
}
|
||||
|
||||
vm := Engine{flags: ScriptVerifyStrictEncoding}
|
||||
for _, test := range tests {
|
||||
err := vm.checkSignatureEncoding(test.sig)
|
||||
if err != nil && test.isValid {
|
||||
t.Errorf("checkSignatureEncoding test '%s' failed "+
|
||||
"when it should have succeeded: %v", test.name,
|
||||
err)
|
||||
} else if err == nil && !test.isValid {
|
||||
t.Errorf("checkSignatureEncooding test '%s' succeeded "+
|
||||
"when it should have failed", test.name)
|
||||
}
|
||||
}
|
||||
}
|
||||
+377
@@ -0,0 +1,377 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// ErrorCode identifies a kind of script error.
|
||||
type ErrorCode int
|
||||
|
||||
// These constants are used to identify a specific Error.
|
||||
const (
|
||||
// ErrInternal is returned if internal consistency checks fail. In
|
||||
// practice this error should never be seen as it would mean there is an
|
||||
// error in the engine logic.
|
||||
ErrInternal ErrorCode = iota
|
||||
|
||||
// ---------------------------------------
|
||||
// Failures related to improper API usage.
|
||||
// ---------------------------------------
|
||||
|
||||
// ErrInvalidFlags is returned when the passed flags to NewEngine
|
||||
// contain an invalid combination.
|
||||
ErrInvalidFlags
|
||||
|
||||
// ErrInvalidIndex is returned when an out-of-bounds index is passed to
|
||||
// a function.
|
||||
ErrInvalidIndex
|
||||
|
||||
// ErrUnsupportedAddress is returned when a concrete type that
|
||||
// implements a btcutil.Address is not a supported type.
|
||||
ErrUnsupportedAddress
|
||||
|
||||
// ErrNotMultisigScript is returned from CalcMultiSigStats when the
|
||||
// provided script is not a multisig script.
|
||||
ErrNotMultisigScript
|
||||
|
||||
// ErrTooManyRequiredSigs is returned from MultiSigScript when the
|
||||
// specified number of required signatures is larger than the number of
|
||||
// provided public keys.
|
||||
ErrTooManyRequiredSigs
|
||||
|
||||
// ErrTooMuchNullData is returned from NullDataScript when the length of
|
||||
// the provided data exceeds MaxDataCarrierSize.
|
||||
ErrTooMuchNullData
|
||||
|
||||
// ------------------------------------------
|
||||
// Failures related to final execution state.
|
||||
// ------------------------------------------
|
||||
|
||||
// ErrEarlyReturn is returned when OP_RETURN is executed in the script.
|
||||
ErrEarlyReturn
|
||||
|
||||
// ErrEmptyStack is returned when the script evaluated without error,
|
||||
// but terminated with an empty top stack element.
|
||||
ErrEmptyStack
|
||||
|
||||
// ErrEvalFalse is returned when the script evaluated without error but
|
||||
// terminated with a false top stack element.
|
||||
ErrEvalFalse
|
||||
|
||||
// ErrScriptUnfinished is returned when CheckErrorCondition is called on
|
||||
// a script that has not finished executing.
|
||||
ErrScriptUnfinished
|
||||
|
||||
// ErrScriptDone is returned when an attempt to execute an opcode is
|
||||
// made once all of them have already been executed. This can happen
|
||||
// due to things such as a second call to Execute or calling Step after
|
||||
// all opcodes have already been executed.
|
||||
ErrInvalidProgramCounter
|
||||
|
||||
// -----------------------------------------------------
|
||||
// Failures related to exceeding maximum allowed limits.
|
||||
// -----------------------------------------------------
|
||||
|
||||
// ErrScriptTooBig is returned if a script is larger than MaxScriptSize.
|
||||
ErrScriptTooBig
|
||||
|
||||
// ErrElementTooBig is returned if the size of an element to be pushed
|
||||
// to the stack is over MaxScriptElementSize.
|
||||
ErrElementTooBig
|
||||
|
||||
// ErrTooManyOperations is returned if a script has more than
|
||||
// MaxOpsPerScript opcodes that do not push data.
|
||||
ErrTooManyOperations
|
||||
|
||||
// ErrStackOverflow is returned when stack and altstack combined depth
|
||||
// is over the limit.
|
||||
ErrStackOverflow
|
||||
|
||||
// ErrInvalidPubKeyCount is returned when the number of public keys
|
||||
// specified for a multsig is either negative or greater than
|
||||
// MaxPubKeysPerMultiSig.
|
||||
ErrInvalidPubKeyCount
|
||||
|
||||
// ErrInvalidSignatureCount is returned when the number of signatures
|
||||
// specified for a multisig is either negative or greater than the
|
||||
// number of public keys.
|
||||
ErrInvalidSignatureCount
|
||||
|
||||
// ErrNumberTooBig is returned when the argument for an opcode that
|
||||
// expects numeric input is larger than the expected maximum number of
|
||||
// bytes. For the most part, opcodes that deal with stack manipulation
|
||||
// via offsets, arithmetic, numeric comparison, and boolean logic are
|
||||
// those that this applies to. However, any opcode that expects numeric
|
||||
// input may fail with this code.
|
||||
ErrNumberTooBig
|
||||
|
||||
// --------------------------------------------
|
||||
// Failures related to verification operations.
|
||||
// --------------------------------------------
|
||||
|
||||
// ErrVerify is returned when OP_VERIFY is encountered in a script and
|
||||
// the top item on the data stack does not evaluate to true.
|
||||
ErrVerify
|
||||
|
||||
// ErrEqualVerify is returned when OP_EQUALVERIFY is encountered in a
|
||||
// script and the top item on the data stack does not evaluate to true.
|
||||
ErrEqualVerify
|
||||
|
||||
// ErrNumEqualVerify is returned when OP_NUMEQUALVERIFY is encountered
|
||||
// in a script and the top item on the data stack does not evaluate to
|
||||
// true.
|
||||
ErrNumEqualVerify
|
||||
|
||||
// ErrCheckSigVerify is returned when OP_CHECKSIGVERIFY is encountered
|
||||
// in a script and the top item on the data stack does not evaluate to
|
||||
// true.
|
||||
ErrCheckSigVerify
|
||||
|
||||
// ErrCheckSigVerify is returned when OP_CHECKMULTISIGVERIFY is
|
||||
// encountered in a script and the top item on the data stack does not
|
||||
// evaluate to true.
|
||||
ErrCheckMultiSigVerify
|
||||
|
||||
// --------------------------------------------
|
||||
// Failures related to improper use of opcodes.
|
||||
// --------------------------------------------
|
||||
|
||||
// ErrDisabledOpcode is returned when a disabled opcode is encountered
|
||||
// in a script.
|
||||
ErrDisabledOpcode
|
||||
|
||||
// ErrReservedOpcode is returned when an opcode marked as reserved
|
||||
// is encountered in a script.
|
||||
ErrReservedOpcode
|
||||
|
||||
// ErrMalformedPush is returned when a data push opcode tries to push
|
||||
// more bytes than are left in the script.
|
||||
ErrMalformedPush
|
||||
|
||||
// ErrInvalidStackOperation is returned when a stack operation is
|
||||
// attempted with a number that is invalid for the current stack size.
|
||||
ErrInvalidStackOperation
|
||||
|
||||
// ErrUnbalancedConditional is returned when an OP_ELSE or OP_ENDIF is
|
||||
// encountered in a script without first having an OP_IF or OP_NOTIF or
|
||||
// the end of script is reached without encountering an OP_ENDIF when
|
||||
// an OP_IF or OP_NOTIF was previously encountered.
|
||||
ErrUnbalancedConditional
|
||||
|
||||
// ---------------------------------
|
||||
// Failures related to malleability.
|
||||
// ---------------------------------
|
||||
|
||||
// ErrMinimalData is returned when the ScriptVerifyMinimalData flag
|
||||
// is set and the script contains push operations that do not use
|
||||
// the minimal opcode required.
|
||||
ErrMinimalData
|
||||
|
||||
// ErrInvalidSigHashType is returned when a signature hash type is not
|
||||
// one of the supported types.
|
||||
ErrInvalidSigHashType
|
||||
|
||||
// ErrSigDER is returned when a signature is not a canonically-encoded
|
||||
// DER signature.
|
||||
ErrSigDER
|
||||
|
||||
// ErrSigHighS is returned when the ScriptVerifyLowS flag is set and the
|
||||
// script contains any signatures whose S values are higher than the
|
||||
// half order.
|
||||
ErrSigHighS
|
||||
|
||||
// ErrNotPushOnly is returned when a script that is required to only
|
||||
// push data to the stack performs other operations. A couple of cases
|
||||
// where this applies is for a pay-to-script-hash signature script when
|
||||
// bip16 is active and when the ScriptVerifySigPushOnly flag is set.
|
||||
ErrNotPushOnly
|
||||
|
||||
// ErrSigNullDummy is returned when the ScriptStrictMultiSig flag is set
|
||||
// and a multisig script has anything other than 0 for the extra dummy
|
||||
// argument.
|
||||
ErrSigNullDummy
|
||||
|
||||
// ErrPubKeyType is returned when the ScriptVerifyStrictEncoding
|
||||
// flag is set and the script contains invalid public keys.
|
||||
ErrPubKeyType
|
||||
|
||||
// ErrCleanStack is returned when the ScriptVerifyCleanStack flag
|
||||
// is set, and after evalution, the stack does not contain only a
|
||||
// single element.
|
||||
ErrCleanStack
|
||||
|
||||
// ErrNullFail is returned when the ScriptVerifyNullFail flag is
|
||||
// set and signatures are not empty on failed checksig or checkmultisig
|
||||
// operations.
|
||||
ErrNullFail
|
||||
|
||||
// ErrWitnessMalleated is returned if ScriptVerifyWitness is set and a
|
||||
// native p2wsh program is encountered which has a non-empty sigScript.
|
||||
ErrWitnessMalleated
|
||||
|
||||
// ErrWitnessMalleatedP2SH is returned if ScriptVerifyWitness if set
|
||||
// and the validation logic for nested p2sh encounters a sigScript
|
||||
// which isn't *exactyl* a datapush of the witness program.
|
||||
ErrWitnessMalleatedP2SH
|
||||
|
||||
// -------------------------------
|
||||
// Failures related to soft forks.
|
||||
// -------------------------------
|
||||
|
||||
// ErrDiscourageUpgradableNOPs is returned when the
|
||||
// ScriptDiscourageUpgradableNops flag is set and a NOP opcode is
|
||||
// encountered in a script.
|
||||
ErrDiscourageUpgradableNOPs
|
||||
|
||||
// ErrNegativeLockTime is returned when a script contains an opcode that
|
||||
// interprets a negative lock time.
|
||||
ErrNegativeLockTime
|
||||
|
||||
// ErrUnsatisfiedLockTime is returned when a script contains an opcode
|
||||
// that involves a lock time and the required lock time has not been
|
||||
// reached.
|
||||
ErrUnsatisfiedLockTime
|
||||
|
||||
// ErrMinimalIf is returned if ScriptVerifyWitness is set and the
|
||||
// operand of an OP_IF/OP_NOF_IF are not either an empty vector or
|
||||
// [0x01].
|
||||
ErrMinimalIf
|
||||
|
||||
// ErrDiscourageUpgradableWitnessProgram is returned if
|
||||
// ScriptVerifyWitness is set and the versino of an executing witness
|
||||
// program is outside the set of currently defined witness program
|
||||
// vesions.
|
||||
ErrDiscourageUpgradableWitnessProgram
|
||||
|
||||
// ----------------------------------------
|
||||
// Failures related to segregated witness.
|
||||
// ----------------------------------------
|
||||
|
||||
// ErrWitnessProgramEmpty is returned if ScriptVerifyWitness is set and
|
||||
// the witness stack itself is empty.
|
||||
ErrWitnessProgramEmpty
|
||||
|
||||
// ErrWitnessProgramMismatch is returned if ScriptVerifyWitness is set
|
||||
// and the witness itself for a p2wkh witness program isn't *exactly* 2
|
||||
// items or if the witness for a p2wsh isn't the sha255 of the witness
|
||||
// script.
|
||||
ErrWitnessProgramMismatch
|
||||
|
||||
// ErrWitnessProgramWrongLength is returned if ScriptVerifyWitness is
|
||||
// set and the length of the witness program violates the length as
|
||||
// dictated by the current witness version.
|
||||
ErrWitnessProgramWrongLength
|
||||
|
||||
// ErrWitnessUnexpected is returned if ScriptVerifyWitness is set and a
|
||||
// transaction includes witness data but doesn't spend an which is a
|
||||
// witness program (nested or native).
|
||||
ErrWitnessUnexpected
|
||||
|
||||
// ErrWitnessPubKeyType is returned if ScriptVerifyWitness is set and
|
||||
// the public key used in either a check-sig or check-multi-sig isn't
|
||||
// serialized in a compressed format.
|
||||
ErrWitnessPubKeyType
|
||||
|
||||
// numErrorCodes is the maximum error code number used in tests. This
|
||||
// entry MUST be the last entry in the enum.
|
||||
numErrorCodes
|
||||
)
|
||||
|
||||
// Map of ErrorCode values back to their constant names for pretty printing.
|
||||
var errorCodeStrings = map[ErrorCode]string{
|
||||
ErrInternal: "ErrInternal",
|
||||
ErrInvalidFlags: "ErrInvalidFlags",
|
||||
ErrInvalidIndex: "ErrInvalidIndex",
|
||||
ErrUnsupportedAddress: "ErrUnsupportedAddress",
|
||||
ErrNotMultisigScript: "ErrNotMultisigScript",
|
||||
ErrTooManyRequiredSigs: "ErrTooManyRequiredSigs",
|
||||
ErrTooMuchNullData: "ErrTooMuchNullData",
|
||||
ErrEarlyReturn: "ErrEarlyReturn",
|
||||
ErrEmptyStack: "ErrEmptyStack",
|
||||
ErrEvalFalse: "ErrEvalFalse",
|
||||
ErrScriptUnfinished: "ErrScriptUnfinished",
|
||||
ErrInvalidProgramCounter: "ErrInvalidProgramCounter",
|
||||
ErrScriptTooBig: "ErrScriptTooBig",
|
||||
ErrElementTooBig: "ErrElementTooBig",
|
||||
ErrTooManyOperations: "ErrTooManyOperations",
|
||||
ErrStackOverflow: "ErrStackOverflow",
|
||||
ErrInvalidPubKeyCount: "ErrInvalidPubKeyCount",
|
||||
ErrInvalidSignatureCount: "ErrInvalidSignatureCount",
|
||||
ErrNumberTooBig: "ErrNumberTooBig",
|
||||
ErrVerify: "ErrVerify",
|
||||
ErrEqualVerify: "ErrEqualVerify",
|
||||
ErrNumEqualVerify: "ErrNumEqualVerify",
|
||||
ErrCheckSigVerify: "ErrCheckSigVerify",
|
||||
ErrCheckMultiSigVerify: "ErrCheckMultiSigVerify",
|
||||
ErrDisabledOpcode: "ErrDisabledOpcode",
|
||||
ErrReservedOpcode: "ErrReservedOpcode",
|
||||
ErrMalformedPush: "ErrMalformedPush",
|
||||
ErrInvalidStackOperation: "ErrInvalidStackOperation",
|
||||
ErrUnbalancedConditional: "ErrUnbalancedConditional",
|
||||
ErrMinimalData: "ErrMinimalData",
|
||||
ErrInvalidSigHashType: "ErrInvalidSigHashType",
|
||||
ErrSigDER: "ErrSigDER",
|
||||
ErrSigHighS: "ErrSigHighS",
|
||||
ErrNotPushOnly: "ErrNotPushOnly",
|
||||
ErrSigNullDummy: "ErrSigNullDummy",
|
||||
ErrPubKeyType: "ErrPubKeyType",
|
||||
ErrCleanStack: "ErrCleanStack",
|
||||
ErrNullFail: "ErrNullFail",
|
||||
ErrDiscourageUpgradableNOPs: "ErrDiscourageUpgradableNOPs",
|
||||
ErrNegativeLockTime: "ErrNegativeLockTime",
|
||||
ErrUnsatisfiedLockTime: "ErrUnsatisfiedLockTime",
|
||||
ErrWitnessProgramEmpty: "ErrWitnessProgramEmpty",
|
||||
ErrWitnessProgramMismatch: "ErrWitnessProgramMismatch",
|
||||
ErrWitnessProgramWrongLength: "ErrWitnessProgramWrongLength",
|
||||
ErrWitnessMalleated: "ErrWitnessMalleated",
|
||||
ErrWitnessMalleatedP2SH: "ErrWitnessMalleatedP2SH",
|
||||
ErrWitnessUnexpected: "ErrWitnessUnexpected",
|
||||
ErrMinimalIf: "ErrMinimalIf",
|
||||
ErrWitnessPubKeyType: "ErrWitnessPubKeyType",
|
||||
ErrDiscourageUpgradableWitnessProgram: "ErrDiscourageUpgradableWitnessProgram",
|
||||
}
|
||||
|
||||
// String returns the ErrorCode as a human-readable name.
|
||||
func (e ErrorCode) String() string {
|
||||
if s := errorCodeStrings[e]; s != "" {
|
||||
return s
|
||||
}
|
||||
return fmt.Sprintf("Unknown ErrorCode (%d)", int(e))
|
||||
}
|
||||
|
||||
// Error identifies a script-related error. It is used to indicate three
|
||||
// classes of errors:
|
||||
// 1) Script execution failures due to violating one of the many requirements
|
||||
// imposed by the script engine or evaluating to false
|
||||
// 2) Improper API usage by callers
|
||||
// 3) Internal consistency check failures
|
||||
//
|
||||
// The caller can use type assertions on the returned errors to access the
|
||||
// ErrorCode field to ascertain the specific reason for the error. As an
|
||||
// additional convenience, the caller may make use of the IsErrorCode function
|
||||
// to check for a specific error code.
|
||||
type Error struct {
|
||||
ErrorCode ErrorCode
|
||||
Description string
|
||||
}
|
||||
|
||||
// Error satisfies the error interface and prints human-readable errors.
|
||||
func (e Error) Error() string {
|
||||
return e.Description
|
||||
}
|
||||
|
||||
// scriptError creates an Error given a set of arguments.
|
||||
func scriptError(c ErrorCode, desc string) Error {
|
||||
return Error{ErrorCode: c, Description: desc}
|
||||
}
|
||||
|
||||
// IsErrorCode returns whether or not the provided error is a script error with
|
||||
// the provided error code.
|
||||
func IsErrorCode(err error, c ErrorCode) bool {
|
||||
serr, ok := err.(Error)
|
||||
return ok && serr.ErrorCode == c
|
||||
}
|
||||
+116
@@ -0,0 +1,116 @@
|
||||
// Copyright (c) 2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"testing"
|
||||
)
|
||||
|
||||
// TestErrorCodeStringer tests the stringized output for the ErrorCode type.
|
||||
func TestErrorCodeStringer(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
in ErrorCode
|
||||
want string
|
||||
}{
|
||||
{ErrInternal, "ErrInternal"},
|
||||
{ErrInvalidFlags, "ErrInvalidFlags"},
|
||||
{ErrInvalidIndex, "ErrInvalidIndex"},
|
||||
{ErrUnsupportedAddress, "ErrUnsupportedAddress"},
|
||||
{ErrTooManyRequiredSigs, "ErrTooManyRequiredSigs"},
|
||||
{ErrTooMuchNullData, "ErrTooMuchNullData"},
|
||||
{ErrNotMultisigScript, "ErrNotMultisigScript"},
|
||||
{ErrEarlyReturn, "ErrEarlyReturn"},
|
||||
{ErrEmptyStack, "ErrEmptyStack"},
|
||||
{ErrEvalFalse, "ErrEvalFalse"},
|
||||
{ErrScriptUnfinished, "ErrScriptUnfinished"},
|
||||
{ErrInvalidProgramCounter, "ErrInvalidProgramCounter"},
|
||||
{ErrScriptTooBig, "ErrScriptTooBig"},
|
||||
{ErrElementTooBig, "ErrElementTooBig"},
|
||||
{ErrTooManyOperations, "ErrTooManyOperations"},
|
||||
{ErrStackOverflow, "ErrStackOverflow"},
|
||||
{ErrInvalidPubKeyCount, "ErrInvalidPubKeyCount"},
|
||||
{ErrInvalidSignatureCount, "ErrInvalidSignatureCount"},
|
||||
{ErrNumberTooBig, "ErrNumberTooBig"},
|
||||
{ErrVerify, "ErrVerify"},
|
||||
{ErrEqualVerify, "ErrEqualVerify"},
|
||||
{ErrNumEqualVerify, "ErrNumEqualVerify"},
|
||||
{ErrCheckSigVerify, "ErrCheckSigVerify"},
|
||||
{ErrCheckMultiSigVerify, "ErrCheckMultiSigVerify"},
|
||||
{ErrDisabledOpcode, "ErrDisabledOpcode"},
|
||||
{ErrReservedOpcode, "ErrReservedOpcode"},
|
||||
{ErrMalformedPush, "ErrMalformedPush"},
|
||||
{ErrInvalidStackOperation, "ErrInvalidStackOperation"},
|
||||
{ErrUnbalancedConditional, "ErrUnbalancedConditional"},
|
||||
{ErrMinimalData, "ErrMinimalData"},
|
||||
{ErrInvalidSigHashType, "ErrInvalidSigHashType"},
|
||||
{ErrSigDER, "ErrSigDER"},
|
||||
{ErrSigHighS, "ErrSigHighS"},
|
||||
{ErrNotPushOnly, "ErrNotPushOnly"},
|
||||
{ErrSigNullDummy, "ErrSigNullDummy"},
|
||||
{ErrPubKeyType, "ErrPubKeyType"},
|
||||
{ErrCleanStack, "ErrCleanStack"},
|
||||
{ErrNullFail, "ErrNullFail"},
|
||||
{ErrDiscourageUpgradableNOPs, "ErrDiscourageUpgradableNOPs"},
|
||||
{ErrNegativeLockTime, "ErrNegativeLockTime"},
|
||||
{ErrUnsatisfiedLockTime, "ErrUnsatisfiedLockTime"},
|
||||
{ErrWitnessProgramEmpty, "ErrWitnessProgramEmpty"},
|
||||
{ErrWitnessProgramMismatch, "ErrWitnessProgramMismatch"},
|
||||
{ErrWitnessProgramWrongLength, "ErrWitnessProgramWrongLength"},
|
||||
{ErrWitnessMalleated, "ErrWitnessMalleated"},
|
||||
{ErrWitnessMalleatedP2SH, "ErrWitnessMalleatedP2SH"},
|
||||
{ErrWitnessUnexpected, "ErrWitnessUnexpected"},
|
||||
{ErrMinimalIf, "ErrMinimalIf"},
|
||||
{ErrWitnessPubKeyType, "ErrWitnessPubKeyType"},
|
||||
{ErrDiscourageUpgradableWitnessProgram, "ErrDiscourageUpgradableWitnessProgram"},
|
||||
{0xffff, "Unknown ErrorCode (65535)"},
|
||||
}
|
||||
|
||||
// Detect additional error codes that don't have the stringer added.
|
||||
if len(tests)-1 != int(numErrorCodes) {
|
||||
t.Errorf("It appears an error code was added without adding an " +
|
||||
"associated stringer test")
|
||||
}
|
||||
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
result := test.in.String()
|
||||
if result != test.want {
|
||||
t.Errorf("String #%d\n got: %s want: %s", i, result,
|
||||
test.want)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestError tests the error output for the Error type.
|
||||
func TestError(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
in Error
|
||||
want string
|
||||
}{
|
||||
{
|
||||
Error{Description: "some error"},
|
||||
"some error",
|
||||
},
|
||||
{
|
||||
Error{Description: "human-readable error"},
|
||||
"human-readable error",
|
||||
},
|
||||
}
|
||||
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
result := test.in.Error()
|
||||
if result != test.want {
|
||||
t.Errorf("Error #%d\n got: %s want: %s", i, result,
|
||||
test.want)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
+182
@@ -0,0 +1,182 @@
|
||||
// Copyright (c) 2014-2016 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript_test
|
||||
|
||||
import (
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
|
||||
"github.com/btcsuite/btcd/btcec"
|
||||
"github.com/btcsuite/btcd/chaincfg"
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
"github.com/btcsuite/btcd/txscript"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/btcsuite/btcutil"
|
||||
)
|
||||
|
||||
// This example demonstrates creating a script which pays to a bitcoin address.
|
||||
// It also prints the created script hex and uses the DisasmString function to
|
||||
// display the disassembled script.
|
||||
func ExamplePayToAddrScript() {
|
||||
// Parse the address to send the coins to into a btcutil.Address
|
||||
// which is useful to ensure the accuracy of the address and determine
|
||||
// the address type. It is also required for the upcoming call to
|
||||
// PayToAddrScript.
|
||||
addressStr := "12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV"
|
||||
address, err := btcutil.DecodeAddress(addressStr, &chaincfg.MainNetParams)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
// Create a public key script that pays to the address.
|
||||
script, err := txscript.PayToAddrScript(address)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Printf("Script Hex: %x\n", script)
|
||||
|
||||
disasm, err := txscript.DisasmString(script)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Println("Script Disassembly:", disasm)
|
||||
|
||||
// Output:
|
||||
// Script Hex: 76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac
|
||||
// Script Disassembly: OP_DUP OP_HASH160 128004ff2fcaf13b2b91eb654b1dc2b674f7ec61 OP_EQUALVERIFY OP_CHECKSIG
|
||||
}
|
||||
|
||||
// This example demonstrates extracting information from a standard public key
|
||||
// script.
|
||||
func ExampleExtractPkScriptAddrs() {
|
||||
// Start with a standard pay-to-pubkey-hash script.
|
||||
scriptHex := "76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac"
|
||||
script, err := hex.DecodeString(scriptHex)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
// Extract and print details from the script.
|
||||
scriptClass, addresses, reqSigs, err := txscript.ExtractPkScriptAddrs(
|
||||
script, &chaincfg.MainNetParams)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Println("Script Class:", scriptClass)
|
||||
fmt.Println("Addresses:", addresses)
|
||||
fmt.Println("Required Signatures:", reqSigs)
|
||||
|
||||
// Output:
|
||||
// Script Class: pubkeyhash
|
||||
// Addresses: [12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV]
|
||||
// Required Signatures: 1
|
||||
}
|
||||
|
||||
// This example demonstrates manually creating and signing a redeem transaction.
|
||||
func ExampleSignTxOutput() {
|
||||
// Ordinarily the private key would come from whatever storage mechanism
|
||||
// is being used, but for this example just hard code it.
|
||||
privKeyBytes, err := hex.DecodeString("22a47fa09a223f2aa079edf85a7c2" +
|
||||
"d4f8720ee63e502ee2869afab7de234b80c")
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
privKey, pubKey := btcec.PrivKeyFromBytes(btcec.S256(), privKeyBytes)
|
||||
pubKeyHash := btcutil.Hash160(pubKey.SerializeCompressed())
|
||||
addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash,
|
||||
&chaincfg.MainNetParams)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
// For this example, create a fake transaction that represents what
|
||||
// would ordinarily be the real transaction that is being spent. It
|
||||
// contains a single output that pays to address in the amount of 1 BTC.
|
||||
originTx := wire.NewMsgTx(wire.TxVersion)
|
||||
prevOut := wire.NewOutPoint(&chainhash.Hash{}, ^uint32(0))
|
||||
txIn := wire.NewTxIn(prevOut, []byte{txscript.OP_0, txscript.OP_0}, nil)
|
||||
originTx.AddTxIn(txIn)
|
||||
pkScript, err := txscript.PayToAddrScript(addr)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
txOut := wire.NewTxOut(100000000, pkScript)
|
||||
originTx.AddTxOut(txOut)
|
||||
originTxHash := originTx.TxHash()
|
||||
|
||||
// Create the transaction to redeem the fake transaction.
|
||||
redeemTx := wire.NewMsgTx(wire.TxVersion)
|
||||
|
||||
// Add the input(s) the redeeming transaction will spend. There is no
|
||||
// signature script at this point since it hasn't been created or signed
|
||||
// yet, hence nil is provided for it.
|
||||
prevOut = wire.NewOutPoint(&originTxHash, 0)
|
||||
txIn = wire.NewTxIn(prevOut, nil, nil)
|
||||
redeemTx.AddTxIn(txIn)
|
||||
|
||||
// Ordinarily this would contain that actual destination of the funds,
|
||||
// but for this example don't bother.
|
||||
txOut = wire.NewTxOut(0, nil)
|
||||
redeemTx.AddTxOut(txOut)
|
||||
|
||||
// Sign the redeeming transaction.
|
||||
lookupKey := func(a btcutil.Address) (*btcec.PrivateKey, bool, error) {
|
||||
// Ordinarily this function would involve looking up the private
|
||||
// key for the provided address, but since the only thing being
|
||||
// signed in this example uses the address associated with the
|
||||
// private key from above, simply return it with the compressed
|
||||
// flag set since the address is using the associated compressed
|
||||
// public key.
|
||||
//
|
||||
// NOTE: If you want to prove the code is actually signing the
|
||||
// transaction properly, uncomment the following line which
|
||||
// intentionally returns an invalid key to sign with, which in
|
||||
// turn will result in a failure during the script execution
|
||||
// when verifying the signature.
|
||||
//
|
||||
// privKey.D.SetInt64(12345)
|
||||
//
|
||||
return privKey, true, nil
|
||||
}
|
||||
// Notice that the script database parameter is nil here since it isn't
|
||||
// used. It must be specified when pay-to-script-hash transactions are
|
||||
// being signed.
|
||||
sigScript, err := txscript.SignTxOutput(&chaincfg.MainNetParams,
|
||||
redeemTx, 0, originTx.TxOut[0].PkScript, txscript.SigHashAll,
|
||||
txscript.KeyClosure(lookupKey), nil, nil)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
redeemTx.TxIn[0].SignatureScript = sigScript
|
||||
|
||||
// Prove that the transaction has been validly signed by executing the
|
||||
// script pair.
|
||||
flags := txscript.ScriptBip16 | txscript.ScriptVerifyDERSignatures |
|
||||
txscript.ScriptStrictMultiSig |
|
||||
txscript.ScriptDiscourageUpgradableNops
|
||||
vm, err := txscript.NewEngine(originTx.TxOut[0].PkScript, redeemTx, 0,
|
||||
flags, nil, nil, -1)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
if err := vm.Execute(); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Println("Transaction successfully signed")
|
||||
|
||||
// Output:
|
||||
// Transaction successfully signed
|
||||
}
|
||||
+89
@@ -0,0 +1,89 @@
|
||||
// Copyright (c) 2016 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"sync"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
)
|
||||
|
||||
// TxSigHashes houses the partial set of sighashes introduced within BIP0143.
|
||||
// This partial set of sighashes may be re-used within each input across a
|
||||
// transaction when validating all inputs. As a result, validation complexity
|
||||
// for SigHashAll can be reduced by a polynomial factor.
|
||||
type TxSigHashes struct {
|
||||
HashPrevOuts chainhash.Hash
|
||||
HashSequence chainhash.Hash
|
||||
HashOutputs chainhash.Hash
|
||||
}
|
||||
|
||||
// NewTxSigHashes computes, and returns the cached sighashes of the given
|
||||
// transaction.
|
||||
func NewTxSigHashes(tx *wire.MsgTx) *TxSigHashes {
|
||||
return &TxSigHashes{
|
||||
HashPrevOuts: calcHashPrevOuts(tx),
|
||||
HashSequence: calcHashSequence(tx),
|
||||
HashOutputs: calcHashOutputs(tx),
|
||||
}
|
||||
}
|
||||
|
||||
// HashCache houses a set of partial sighashes keyed by txid. The set of partial
|
||||
// sighashes are those introduced within BIP0143 by the new more efficient
|
||||
// sighash digest calculation algorithm. Using this threadsafe shared cache,
|
||||
// multiple goroutines can safely re-use the pre-computed partial sighashes
|
||||
// speeding up validation time amongst all inputs found within a block.
|
||||
type HashCache struct {
|
||||
sigHashes map[chainhash.Hash]*TxSigHashes
|
||||
|
||||
sync.RWMutex
|
||||
}
|
||||
|
||||
// NewHashCache returns a new instance of the HashCache given a maximum number
|
||||
// of entries which may exist within it at anytime.
|
||||
func NewHashCache(maxSize uint) *HashCache {
|
||||
return &HashCache{
|
||||
sigHashes: make(map[chainhash.Hash]*TxSigHashes, maxSize),
|
||||
}
|
||||
}
|
||||
|
||||
// AddSigHashes computes, then adds the partial sighashes for the passed
|
||||
// transaction.
|
||||
func (h *HashCache) AddSigHashes(tx *wire.MsgTx) {
|
||||
h.Lock()
|
||||
h.sigHashes[tx.TxHash()] = NewTxSigHashes(tx)
|
||||
h.Unlock()
|
||||
}
|
||||
|
||||
// ContainsHashes returns true if the partial sighashes for the passed
|
||||
// transaction currently exist within the HashCache, and false otherwise.
|
||||
func (h *HashCache) ContainsHashes(txid *chainhash.Hash) bool {
|
||||
h.RLock()
|
||||
_, found := h.sigHashes[*txid]
|
||||
h.RUnlock()
|
||||
|
||||
return found
|
||||
}
|
||||
|
||||
// GetSigHashes possibly returns the previously cached partial sighashes for
|
||||
// the passed transaction. This function also returns an additional boolean
|
||||
// value indicating if the sighashes for the passed transaction were found to
|
||||
// be present within the HashCache.
|
||||
func (h *HashCache) GetSigHashes(txid *chainhash.Hash) (*TxSigHashes, bool) {
|
||||
h.RLock()
|
||||
item, found := h.sigHashes[*txid]
|
||||
h.RUnlock()
|
||||
|
||||
return item, found
|
||||
}
|
||||
|
||||
// PurgeSigHashes removes all partial sighashes from the HashCache belonging to
|
||||
// the passed transaction.
|
||||
func (h *HashCache) PurgeSigHashes(txid *chainhash.Hash) {
|
||||
h.Lock()
|
||||
delete(h.sigHashes, *txid)
|
||||
h.Unlock()
|
||||
}
|
||||
+182
@@ -0,0 +1,182 @@
|
||||
// Copyright (c) 2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"math/rand"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/davecgh/go-spew/spew"
|
||||
)
|
||||
|
||||
// genTestTx creates a random transaction for uses within test cases.
|
||||
func genTestTx() (*wire.MsgTx, error) {
|
||||
tx := wire.NewMsgTx(2)
|
||||
tx.Version = rand.Int31()
|
||||
|
||||
numTxins := rand.Intn(11)
|
||||
for i := 0; i < numTxins; i++ {
|
||||
randTxIn := wire.TxIn{
|
||||
PreviousOutPoint: wire.OutPoint{
|
||||
Index: uint32(rand.Int31()),
|
||||
},
|
||||
Sequence: uint32(rand.Int31()),
|
||||
}
|
||||
_, err := rand.Read(randTxIn.PreviousOutPoint.Hash[:])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tx.TxIn = append(tx.TxIn, &randTxIn)
|
||||
}
|
||||
|
||||
numTxouts := rand.Intn(11)
|
||||
for i := 0; i < numTxouts; i++ {
|
||||
randTxOut := wire.TxOut{
|
||||
Value: rand.Int63(),
|
||||
PkScript: make([]byte, rand.Intn(30)),
|
||||
}
|
||||
if _, err := rand.Read(randTxOut.PkScript); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
tx.TxOut = append(tx.TxOut, &randTxOut)
|
||||
}
|
||||
|
||||
return tx, nil
|
||||
}
|
||||
|
||||
// TestHashCacheAddContainsHashes tests that after items have been added to the
|
||||
// hash cache, the ContainsHashes method returns true for all the items
|
||||
// inserted. Conversely, ContainsHashes should return false for any items
|
||||
// _not_ in the hash cache.
|
||||
func TestHashCacheAddContainsHashes(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
rand.Seed(time.Now().Unix())
|
||||
|
||||
cache := NewHashCache(10)
|
||||
|
||||
var err error
|
||||
|
||||
// First, we'll generate 10 random transactions for use within our
|
||||
// tests.
|
||||
const numTxns = 10
|
||||
txns := make([]*wire.MsgTx, numTxns)
|
||||
for i := 0; i < numTxns; i++ {
|
||||
txns[i], err = genTestTx()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate test tx: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
// With the transactions generated, we'll add each of them to the hash
|
||||
// cache.
|
||||
for _, tx := range txns {
|
||||
cache.AddSigHashes(tx)
|
||||
}
|
||||
|
||||
// Next, we'll ensure that each of the transactions inserted into the
|
||||
// cache are properly located by the ContainsHashes method.
|
||||
for _, tx := range txns {
|
||||
txid := tx.TxHash()
|
||||
if ok := cache.ContainsHashes(&txid); !ok {
|
||||
t.Fatalf("txid %v not found in cache but should be: ",
|
||||
txid)
|
||||
}
|
||||
}
|
||||
|
||||
randTx, err := genTestTx()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate tx: %v", err)
|
||||
}
|
||||
|
||||
// Finally, we'll assert that a transaction that wasn't added to the
|
||||
// cache won't be reported as being present by the ContainsHashes
|
||||
// method.
|
||||
randTxid := randTx.TxHash()
|
||||
if ok := cache.ContainsHashes(&randTxid); ok {
|
||||
t.Fatalf("txid %v wasn't inserted into cache but was found",
|
||||
randTxid)
|
||||
}
|
||||
}
|
||||
|
||||
// TestHashCacheAddGet tests that the sighashes for a particular transaction
|
||||
// are properly retrieved by the GetSigHashes function.
|
||||
func TestHashCacheAddGet(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
rand.Seed(time.Now().Unix())
|
||||
|
||||
cache := NewHashCache(10)
|
||||
|
||||
// To start, we'll generate a random transaction and compute the set of
|
||||
// sighashes for the transaction.
|
||||
randTx, err := genTestTx()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate tx: %v", err)
|
||||
}
|
||||
sigHashes := NewTxSigHashes(randTx)
|
||||
|
||||
// Next, add the transaction to the hash cache.
|
||||
cache.AddSigHashes(randTx)
|
||||
|
||||
// The transaction inserted into the cache above should be found.
|
||||
txid := randTx.TxHash()
|
||||
cacheHashes, ok := cache.GetSigHashes(&txid)
|
||||
if !ok {
|
||||
t.Fatalf("tx %v wasn't found in cache", txid)
|
||||
}
|
||||
|
||||
// Finally, the sighashes retrieved should exactly match the sighash
|
||||
// originally inserted into the cache.
|
||||
if *sigHashes != *cacheHashes {
|
||||
t.Fatalf("sighashes don't match: expected %v, got %v",
|
||||
spew.Sdump(sigHashes), spew.Sdump(cacheHashes))
|
||||
}
|
||||
}
|
||||
|
||||
// TestHashCachePurge tests that items are able to be properly removed from the
|
||||
// hash cache.
|
||||
func TestHashCachePurge(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
rand.Seed(time.Now().Unix())
|
||||
|
||||
cache := NewHashCache(10)
|
||||
|
||||
var err error
|
||||
|
||||
// First we'll start by inserting numTxns transactions into the hash cache.
|
||||
const numTxns = 10
|
||||
txns := make([]*wire.MsgTx, numTxns)
|
||||
for i := 0; i < numTxns; i++ {
|
||||
txns[i], err = genTestTx()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate test tx: %v", err)
|
||||
}
|
||||
}
|
||||
for _, tx := range txns {
|
||||
cache.AddSigHashes(tx)
|
||||
}
|
||||
|
||||
// Once all the transactions have been inserted, we'll purge them from
|
||||
// the hash cache.
|
||||
for _, tx := range txns {
|
||||
txid := tx.TxHash()
|
||||
cache.PurgeSigHashes(&txid)
|
||||
}
|
||||
|
||||
// At this point, none of the transactions inserted into the hash cache
|
||||
// should be found within the cache.
|
||||
for _, tx := range txns {
|
||||
txid := tx.TxHash()
|
||||
if ok := cache.ContainsHashes(&txid); ok {
|
||||
t.Fatalf("tx %v found in cache but should have "+
|
||||
"been purged: ", txid)
|
||||
}
|
||||
}
|
||||
}
|
||||
+43
@@ -0,0 +1,43 @@
|
||||
// Copyright (c) 2013-2015 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"github.com/btcsuite/btclog"
|
||||
)
|
||||
|
||||
// log is a logger that is initialized with no output filters. This
|
||||
// means the package will not perform any logging by default until the caller
|
||||
// requests it.
|
||||
var log btclog.Logger
|
||||
|
||||
// The default amount of logging is none.
|
||||
func init() {
|
||||
DisableLog()
|
||||
}
|
||||
|
||||
// DisableLog disables all library log output. Logging output is disabled
|
||||
// by default until UseLogger is called.
|
||||
func DisableLog() {
|
||||
log = btclog.Disabled
|
||||
}
|
||||
|
||||
// UseLogger uses a specified Logger to output package logging info.
|
||||
func UseLogger(logger btclog.Logger) {
|
||||
log = logger
|
||||
}
|
||||
|
||||
// LogClosure is a closure that can be printed with %v to be used to
|
||||
// generate expensive-to-create data for a detailed log level and avoid doing
|
||||
// the work if the data isn't printed.
|
||||
type logClosure func() string
|
||||
|
||||
func (c logClosure) String() string {
|
||||
return c()
|
||||
}
|
||||
|
||||
func newLogClosure(c func() string) logClosure {
|
||||
return logClosure(c)
|
||||
}
|
||||
+2447
File diff suppressed because it is too large
Load Diff
+205
@@ -0,0 +1,205 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// TestOpcodeDisabled tests the opcodeDisabled function manually because all
|
||||
// disabled opcodes result in a script execution failure when executed normally,
|
||||
// so the function is not called under normal circumstances.
|
||||
func TestOpcodeDisabled(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []byte{OP_CAT, OP_SUBSTR, OP_LEFT, OP_RIGHT, OP_INVERT,
|
||||
OP_AND, OP_OR, OP_2MUL, OP_2DIV, OP_MUL, OP_DIV, OP_MOD,
|
||||
OP_LSHIFT, OP_RSHIFT,
|
||||
}
|
||||
for _, opcodeVal := range tests {
|
||||
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: nil}
|
||||
err := opcodeDisabled(&pop, nil)
|
||||
if !IsErrorCode(err, ErrDisabledOpcode) {
|
||||
t.Errorf("opcodeDisabled: unexpected error - got %v, "+
|
||||
"want %v", err, ErrDisabledOpcode)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestOpcodeDisasm tests the print function for all opcodes in both the oneline
|
||||
// and full modes to ensure it provides the expected disassembly.
|
||||
func TestOpcodeDisasm(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// First, test the oneline disassembly.
|
||||
|
||||
// The expected strings for the data push opcodes are replaced in the
|
||||
// test loops below since they involve repeating bytes. Also, the
|
||||
// OP_NOP# and OP_UNKNOWN# are replaced below too, since it's easier
|
||||
// than manually listing them here.
|
||||
oneBytes := []byte{0x01}
|
||||
oneStr := "01"
|
||||
expectedStrings := [256]string{0x00: "0", 0x4f: "-1",
|
||||
0x50: "OP_RESERVED", 0x61: "OP_NOP", 0x62: "OP_VER",
|
||||
0x63: "OP_IF", 0x64: "OP_NOTIF", 0x65: "OP_VERIF",
|
||||
0x66: "OP_VERNOTIF", 0x67: "OP_ELSE", 0x68: "OP_ENDIF",
|
||||
0x69: "OP_VERIFY", 0x6a: "OP_RETURN", 0x6b: "OP_TOALTSTACK",
|
||||
0x6c: "OP_FROMALTSTACK", 0x6d: "OP_2DROP", 0x6e: "OP_2DUP",
|
||||
0x6f: "OP_3DUP", 0x70: "OP_2OVER", 0x71: "OP_2ROT",
|
||||
0x72: "OP_2SWAP", 0x73: "OP_IFDUP", 0x74: "OP_DEPTH",
|
||||
0x75: "OP_DROP", 0x76: "OP_DUP", 0x77: "OP_NIP",
|
||||
0x78: "OP_OVER", 0x79: "OP_PICK", 0x7a: "OP_ROLL",
|
||||
0x7b: "OP_ROT", 0x7c: "OP_SWAP", 0x7d: "OP_TUCK",
|
||||
0x7e: "OP_CAT", 0x7f: "OP_SUBSTR", 0x80: "OP_LEFT",
|
||||
0x81: "OP_RIGHT", 0x82: "OP_SIZE", 0x83: "OP_INVERT",
|
||||
0x84: "OP_AND", 0x85: "OP_OR", 0x86: "OP_XOR",
|
||||
0x87: "OP_EQUAL", 0x88: "OP_EQUALVERIFY", 0x89: "OP_RESERVED1",
|
||||
0x8a: "OP_RESERVED2", 0x8b: "OP_1ADD", 0x8c: "OP_1SUB",
|
||||
0x8d: "OP_2MUL", 0x8e: "OP_2DIV", 0x8f: "OP_NEGATE",
|
||||
0x90: "OP_ABS", 0x91: "OP_NOT", 0x92: "OP_0NOTEQUAL",
|
||||
0x93: "OP_ADD", 0x94: "OP_SUB", 0x95: "OP_MUL", 0x96: "OP_DIV",
|
||||
0x97: "OP_MOD", 0x98: "OP_LSHIFT", 0x99: "OP_RSHIFT",
|
||||
0x9a: "OP_BOOLAND", 0x9b: "OP_BOOLOR", 0x9c: "OP_NUMEQUAL",
|
||||
0x9d: "OP_NUMEQUALVERIFY", 0x9e: "OP_NUMNOTEQUAL",
|
||||
0x9f: "OP_LESSTHAN", 0xa0: "OP_GREATERTHAN",
|
||||
0xa1: "OP_LESSTHANOREQUAL", 0xa2: "OP_GREATERTHANOREQUAL",
|
||||
0xa3: "OP_MIN", 0xa4: "OP_MAX", 0xa5: "OP_WITHIN",
|
||||
0xa6: "OP_RIPEMD160", 0xa7: "OP_SHA1", 0xa8: "OP_SHA256",
|
||||
0xa9: "OP_HASH160", 0xaa: "OP_HASH256", 0xab: "OP_CODESEPARATOR",
|
||||
0xac: "OP_CHECKSIG", 0xad: "OP_CHECKSIGVERIFY",
|
||||
0xae: "OP_CHECKMULTISIG", 0xaf: "OP_CHECKMULTISIGVERIFY",
|
||||
0xfa: "OP_SMALLINTEGER", 0xfb: "OP_PUBKEYS",
|
||||
0xfd: "OP_PUBKEYHASH", 0xfe: "OP_PUBKEY",
|
||||
0xff: "OP_INVALIDOPCODE",
|
||||
}
|
||||
for opcodeVal, expectedStr := range expectedStrings {
|
||||
var data []byte
|
||||
switch {
|
||||
// OP_DATA_1 through OP_DATA_65 display the pushed data.
|
||||
case opcodeVal >= 0x01 && opcodeVal < 0x4c:
|
||||
data = bytes.Repeat(oneBytes, opcodeVal)
|
||||
expectedStr = strings.Repeat(oneStr, opcodeVal)
|
||||
|
||||
// OP_PUSHDATA1.
|
||||
case opcodeVal == 0x4c:
|
||||
data = bytes.Repeat(oneBytes, 1)
|
||||
expectedStr = strings.Repeat(oneStr, 1)
|
||||
|
||||
// OP_PUSHDATA2.
|
||||
case opcodeVal == 0x4d:
|
||||
data = bytes.Repeat(oneBytes, 2)
|
||||
expectedStr = strings.Repeat(oneStr, 2)
|
||||
|
||||
// OP_PUSHDATA4.
|
||||
case opcodeVal == 0x4e:
|
||||
data = bytes.Repeat(oneBytes, 3)
|
||||
expectedStr = strings.Repeat(oneStr, 3)
|
||||
|
||||
// OP_1 through OP_16 display the numbers themselves.
|
||||
case opcodeVal >= 0x51 && opcodeVal <= 0x60:
|
||||
val := byte(opcodeVal - (0x51 - 1))
|
||||
data = []byte{val}
|
||||
expectedStr = strconv.Itoa(int(val))
|
||||
|
||||
// OP_NOP1 through OP_NOP10.
|
||||
case opcodeVal >= 0xb0 && opcodeVal <= 0xb9:
|
||||
switch opcodeVal {
|
||||
case 0xb1:
|
||||
// OP_NOP2 is an alias of OP_CHECKLOCKTIMEVERIFY
|
||||
expectedStr = "OP_CHECKLOCKTIMEVERIFY"
|
||||
case 0xb2:
|
||||
// OP_NOP3 is an alias of OP_CHECKSEQUENCEVERIFY
|
||||
expectedStr = "OP_CHECKSEQUENCEVERIFY"
|
||||
default:
|
||||
val := byte(opcodeVal - (0xb0 - 1))
|
||||
expectedStr = "OP_NOP" + strconv.Itoa(int(val))
|
||||
}
|
||||
|
||||
// OP_UNKNOWN#.
|
||||
case opcodeVal >= 0xba && opcodeVal <= 0xf9 || opcodeVal == 0xfc:
|
||||
expectedStr = "OP_UNKNOWN" + strconv.Itoa(int(opcodeVal))
|
||||
}
|
||||
|
||||
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: data}
|
||||
gotStr := pop.print(true)
|
||||
if gotStr != expectedStr {
|
||||
t.Errorf("pop.print (opcode %x): Unexpected disasm "+
|
||||
"string - got %v, want %v", opcodeVal, gotStr,
|
||||
expectedStr)
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
// Now, replace the relevant fields and test the full disassembly.
|
||||
expectedStrings[0x00] = "OP_0"
|
||||
expectedStrings[0x4f] = "OP_1NEGATE"
|
||||
for opcodeVal, expectedStr := range expectedStrings {
|
||||
var data []byte
|
||||
switch {
|
||||
// OP_DATA_1 through OP_DATA_65 display the opcode followed by
|
||||
// the pushed data.
|
||||
case opcodeVal >= 0x01 && opcodeVal < 0x4c:
|
||||
data = bytes.Repeat(oneBytes, opcodeVal)
|
||||
expectedStr = fmt.Sprintf("OP_DATA_%d 0x%s", opcodeVal,
|
||||
strings.Repeat(oneStr, opcodeVal))
|
||||
|
||||
// OP_PUSHDATA1.
|
||||
case opcodeVal == 0x4c:
|
||||
data = bytes.Repeat(oneBytes, 1)
|
||||
expectedStr = fmt.Sprintf("OP_PUSHDATA1 0x%02x 0x%s",
|
||||
len(data), strings.Repeat(oneStr, 1))
|
||||
|
||||
// OP_PUSHDATA2.
|
||||
case opcodeVal == 0x4d:
|
||||
data = bytes.Repeat(oneBytes, 2)
|
||||
expectedStr = fmt.Sprintf("OP_PUSHDATA2 0x%04x 0x%s",
|
||||
len(data), strings.Repeat(oneStr, 2))
|
||||
|
||||
// OP_PUSHDATA4.
|
||||
case opcodeVal == 0x4e:
|
||||
data = bytes.Repeat(oneBytes, 3)
|
||||
expectedStr = fmt.Sprintf("OP_PUSHDATA4 0x%08x 0x%s",
|
||||
len(data), strings.Repeat(oneStr, 3))
|
||||
|
||||
// OP_1 through OP_16.
|
||||
case opcodeVal >= 0x51 && opcodeVal <= 0x60:
|
||||
val := byte(opcodeVal - (0x51 - 1))
|
||||
data = []byte{val}
|
||||
expectedStr = "OP_" + strconv.Itoa(int(val))
|
||||
|
||||
// OP_NOP1 through OP_NOP10.
|
||||
case opcodeVal >= 0xb0 && opcodeVal <= 0xb9:
|
||||
switch opcodeVal {
|
||||
case 0xb1:
|
||||
// OP_NOP2 is an alias of OP_CHECKLOCKTIMEVERIFY
|
||||
expectedStr = "OP_CHECKLOCKTIMEVERIFY"
|
||||
case 0xb2:
|
||||
// OP_NOP3 is an alias of OP_CHECKSEQUENCEVERIFY
|
||||
expectedStr = "OP_CHECKSEQUENCEVERIFY"
|
||||
default:
|
||||
val := byte(opcodeVal - (0xb0 - 1))
|
||||
expectedStr = "OP_NOP" + strconv.Itoa(int(val))
|
||||
}
|
||||
|
||||
// OP_UNKNOWN#.
|
||||
case opcodeVal >= 0xba && opcodeVal <= 0xf9 || opcodeVal == 0xfc:
|
||||
expectedStr = "OP_UNKNOWN" + strconv.Itoa(int(opcodeVal))
|
||||
}
|
||||
|
||||
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: data}
|
||||
gotStr := pop.print(false)
|
||||
if gotStr != expectedStr {
|
||||
t.Errorf("pop.print (opcode %x): Unexpected disasm "+
|
||||
"string - got %v, want %v", opcodeVal, gotStr,
|
||||
expectedStr)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
+869
@@ -0,0 +1,869 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/hex"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"strconv"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/btcsuite/btcutil"
|
||||
)
|
||||
|
||||
// scriptTestName returns a descriptive test name for the given reference script
|
||||
// test data.
|
||||
func scriptTestName(test []interface{}) (string, error) {
|
||||
// Account for any optional leading witness data.
|
||||
var witnessOffset int
|
||||
if _, ok := test[0].([]interface{}); ok {
|
||||
witnessOffset++
|
||||
}
|
||||
|
||||
// In addition to the optional leading witness data, the test must
|
||||
// consist of at least a signature script, public key script, flags,
|
||||
// and expected error. Finally, it may optionally contain a comment.
|
||||
if len(test) < witnessOffset+4 || len(test) > witnessOffset+5 {
|
||||
return "", fmt.Errorf("invalid test length %d", len(test))
|
||||
}
|
||||
|
||||
// Use the comment for the test name if one is specified, otherwise,
|
||||
// construct the name based on the signature script, public key script,
|
||||
// and flags.
|
||||
var name string
|
||||
if len(test) == witnessOffset+5 {
|
||||
name = fmt.Sprintf("test (%s)", test[witnessOffset+4])
|
||||
} else {
|
||||
name = fmt.Sprintf("test ([%s, %s, %s])", test[witnessOffset],
|
||||
test[witnessOffset+1], test[witnessOffset+2])
|
||||
}
|
||||
return name, nil
|
||||
}
|
||||
|
||||
// parse hex string into a []byte.
|
||||
func parseHex(tok string) ([]byte, error) {
|
||||
if !strings.HasPrefix(tok, "0x") {
|
||||
return nil, errors.New("not a hex number")
|
||||
}
|
||||
return hex.DecodeString(tok[2:])
|
||||
}
|
||||
|
||||
// parseWitnessStack parses a json array of witness items encoded as hex into a
|
||||
// slice of witness elements.
|
||||
func parseWitnessStack(elements []interface{}) ([][]byte, error) {
|
||||
witness := make([][]byte, len(elements))
|
||||
for i, e := range elements {
|
||||
witElement, err := hex.DecodeString(e.(string))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
witness[i] = witElement
|
||||
}
|
||||
|
||||
return witness, nil
|
||||
}
|
||||
|
||||
// shortFormOps holds a map of opcode names to values for use in short form
|
||||
// parsing. It is declared here so it only needs to be created once.
|
||||
var shortFormOps map[string]byte
|
||||
|
||||
// parseShortForm parses a string as as used in the Bitcoin Core reference tests
|
||||
// into the script it came from.
|
||||
//
|
||||
// The format used for these tests is pretty simple if ad-hoc:
|
||||
// - Opcodes other than the push opcodes and unknown are present as
|
||||
// either OP_NAME or just NAME
|
||||
// - Plain numbers are made into push operations
|
||||
// - Numbers beginning with 0x are inserted into the []byte as-is (so
|
||||
// 0x14 is OP_DATA_20)
|
||||
// - Single quoted strings are pushed as data
|
||||
// - Anything else is an error
|
||||
func parseShortForm(script string) ([]byte, error) {
|
||||
// Only create the short form opcode map once.
|
||||
if shortFormOps == nil {
|
||||
ops := make(map[string]byte)
|
||||
for opcodeName, opcodeValue := range OpcodeByName {
|
||||
if strings.Contains(opcodeName, "OP_UNKNOWN") {
|
||||
continue
|
||||
}
|
||||
ops[opcodeName] = opcodeValue
|
||||
|
||||
// The opcodes named OP_# can't have the OP_ prefix
|
||||
// stripped or they would conflict with the plain
|
||||
// numbers. Also, since OP_FALSE and OP_TRUE are
|
||||
// aliases for the OP_0, and OP_1, respectively, they
|
||||
// have the same value, so detect those by name and
|
||||
// allow them.
|
||||
if (opcodeName == "OP_FALSE" || opcodeName == "OP_TRUE") ||
|
||||
(opcodeValue != OP_0 && (opcodeValue < OP_1 ||
|
||||
opcodeValue > OP_16)) {
|
||||
|
||||
ops[strings.TrimPrefix(opcodeName, "OP_")] = opcodeValue
|
||||
}
|
||||
}
|
||||
shortFormOps = ops
|
||||
}
|
||||
|
||||
// Split only does one separator so convert all \n and tab into space.
|
||||
script = strings.Replace(script, "\n", " ", -1)
|
||||
script = strings.Replace(script, "\t", " ", -1)
|
||||
tokens := strings.Split(script, " ")
|
||||
builder := NewScriptBuilder()
|
||||
|
||||
for _, tok := range tokens {
|
||||
if len(tok) == 0 {
|
||||
continue
|
||||
}
|
||||
// if parses as a plain number
|
||||
if num, err := strconv.ParseInt(tok, 10, 64); err == nil {
|
||||
builder.AddInt64(num)
|
||||
continue
|
||||
} else if bts, err := parseHex(tok); err == nil {
|
||||
// Concatenate the bytes manually since the test code
|
||||
// intentionally creates scripts that are too large and
|
||||
// would cause the builder to error otherwise.
|
||||
if builder.err == nil {
|
||||
builder.script = append(builder.script, bts...)
|
||||
}
|
||||
} else if len(tok) >= 2 &&
|
||||
tok[0] == '\'' && tok[len(tok)-1] == '\'' {
|
||||
builder.AddFullData([]byte(tok[1 : len(tok)-1]))
|
||||
} else if opcode, ok := shortFormOps[tok]; ok {
|
||||
builder.AddOp(opcode)
|
||||
} else {
|
||||
return nil, fmt.Errorf("bad token %q", tok)
|
||||
}
|
||||
|
||||
}
|
||||
return builder.Script()
|
||||
}
|
||||
|
||||
// parseScriptFlags parses the provided flags string from the format used in the
|
||||
// reference tests into ScriptFlags suitable for use in the script engine.
|
||||
func parseScriptFlags(flagStr string) (ScriptFlags, error) {
|
||||
var flags ScriptFlags
|
||||
|
||||
sFlags := strings.Split(flagStr, ",")
|
||||
for _, flag := range sFlags {
|
||||
switch flag {
|
||||
case "":
|
||||
// Nothing.
|
||||
case "CHECKLOCKTIMEVERIFY":
|
||||
flags |= ScriptVerifyCheckLockTimeVerify
|
||||
case "CHECKSEQUENCEVERIFY":
|
||||
flags |= ScriptVerifyCheckSequenceVerify
|
||||
case "CLEANSTACK":
|
||||
flags |= ScriptVerifyCleanStack
|
||||
case "DERSIG":
|
||||
flags |= ScriptVerifyDERSignatures
|
||||
case "DISCOURAGE_UPGRADABLE_NOPS":
|
||||
flags |= ScriptDiscourageUpgradableNops
|
||||
case "LOW_S":
|
||||
flags |= ScriptVerifyLowS
|
||||
case "MINIMALDATA":
|
||||
flags |= ScriptVerifyMinimalData
|
||||
case "NONE":
|
||||
// Nothing.
|
||||
case "NULLDUMMY":
|
||||
flags |= ScriptStrictMultiSig
|
||||
case "NULLFAIL":
|
||||
flags |= ScriptVerifyNullFail
|
||||
case "P2SH":
|
||||
flags |= ScriptBip16
|
||||
case "SIGPUSHONLY":
|
||||
flags |= ScriptVerifySigPushOnly
|
||||
case "STRICTENC":
|
||||
flags |= ScriptVerifyStrictEncoding
|
||||
case "WITNESS":
|
||||
flags |= ScriptVerifyWitness
|
||||
case "DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM":
|
||||
flags |= ScriptVerifyDiscourageUpgradeableWitnessProgram
|
||||
case "MINIMALIF":
|
||||
flags |= ScriptVerifyMinimalIf
|
||||
case "WITNESS_PUBKEYTYPE":
|
||||
flags |= ScriptVerifyWitnessPubKeyType
|
||||
default:
|
||||
return flags, fmt.Errorf("invalid flag: %s", flag)
|
||||
}
|
||||
}
|
||||
return flags, nil
|
||||
}
|
||||
|
||||
// parseExpectedResult parses the provided expected result string into allowed
|
||||
// script error codes. An error is returned if the expected result string is
|
||||
// not supported.
|
||||
func parseExpectedResult(expected string) ([]ErrorCode, error) {
|
||||
switch expected {
|
||||
case "OK":
|
||||
return nil, nil
|
||||
case "UNKNOWN_ERROR":
|
||||
return []ErrorCode{ErrNumberTooBig, ErrMinimalData}, nil
|
||||
case "PUBKEYTYPE":
|
||||
return []ErrorCode{ErrPubKeyType}, nil
|
||||
case "SIG_DER":
|
||||
return []ErrorCode{ErrSigDER, ErrInvalidSigHashType}, nil
|
||||
case "EVAL_FALSE":
|
||||
return []ErrorCode{ErrEvalFalse, ErrEmptyStack}, nil
|
||||
case "EQUALVERIFY":
|
||||
return []ErrorCode{ErrEqualVerify}, nil
|
||||
case "NULLFAIL":
|
||||
return []ErrorCode{ErrNullFail}, nil
|
||||
case "SIG_HIGH_S":
|
||||
return []ErrorCode{ErrSigHighS}, nil
|
||||
case "SIG_HASHTYPE":
|
||||
return []ErrorCode{ErrInvalidSigHashType}, nil
|
||||
case "SIG_NULLDUMMY":
|
||||
return []ErrorCode{ErrSigNullDummy}, nil
|
||||
case "SIG_PUSHONLY":
|
||||
return []ErrorCode{ErrNotPushOnly}, nil
|
||||
case "CLEANSTACK":
|
||||
return []ErrorCode{ErrCleanStack}, nil
|
||||
case "BAD_OPCODE":
|
||||
return []ErrorCode{ErrReservedOpcode, ErrMalformedPush}, nil
|
||||
case "UNBALANCED_CONDITIONAL":
|
||||
return []ErrorCode{ErrUnbalancedConditional,
|
||||
ErrInvalidStackOperation}, nil
|
||||
case "OP_RETURN":
|
||||
return []ErrorCode{ErrEarlyReturn}, nil
|
||||
case "VERIFY":
|
||||
return []ErrorCode{ErrVerify}, nil
|
||||
case "INVALID_STACK_OPERATION", "INVALID_ALTSTACK_OPERATION":
|
||||
return []ErrorCode{ErrInvalidStackOperation}, nil
|
||||
case "DISABLED_OPCODE":
|
||||
return []ErrorCode{ErrDisabledOpcode}, nil
|
||||
case "DISCOURAGE_UPGRADABLE_NOPS":
|
||||
return []ErrorCode{ErrDiscourageUpgradableNOPs}, nil
|
||||
case "PUSH_SIZE":
|
||||
return []ErrorCode{ErrElementTooBig}, nil
|
||||
case "OP_COUNT":
|
||||
return []ErrorCode{ErrTooManyOperations}, nil
|
||||
case "STACK_SIZE":
|
||||
return []ErrorCode{ErrStackOverflow}, nil
|
||||
case "SCRIPT_SIZE":
|
||||
return []ErrorCode{ErrScriptTooBig}, nil
|
||||
case "PUBKEY_COUNT":
|
||||
return []ErrorCode{ErrInvalidPubKeyCount}, nil
|
||||
case "SIG_COUNT":
|
||||
return []ErrorCode{ErrInvalidSignatureCount}, nil
|
||||
case "MINIMALDATA":
|
||||
return []ErrorCode{ErrMinimalData}, nil
|
||||
case "NEGATIVE_LOCKTIME":
|
||||
return []ErrorCode{ErrNegativeLockTime}, nil
|
||||
case "UNSATISFIED_LOCKTIME":
|
||||
return []ErrorCode{ErrUnsatisfiedLockTime}, nil
|
||||
case "MINIMALIF":
|
||||
return []ErrorCode{ErrMinimalIf}, nil
|
||||
case "DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM":
|
||||
return []ErrorCode{ErrDiscourageUpgradableWitnessProgram}, nil
|
||||
case "WITNESS_PROGRAM_WRONG_LENGTH":
|
||||
return []ErrorCode{ErrWitnessProgramWrongLength}, nil
|
||||
case "WITNESS_PROGRAM_WITNESS_EMPTY":
|
||||
return []ErrorCode{ErrWitnessProgramEmpty}, nil
|
||||
case "WITNESS_PROGRAM_MISMATCH":
|
||||
return []ErrorCode{ErrWitnessProgramMismatch}, nil
|
||||
case "WITNESS_MALLEATED":
|
||||
return []ErrorCode{ErrWitnessMalleated}, nil
|
||||
case "WITNESS_MALLEATED_P2SH":
|
||||
return []ErrorCode{ErrWitnessMalleatedP2SH}, nil
|
||||
case "WITNESS_UNEXPECTED":
|
||||
return []ErrorCode{ErrWitnessUnexpected}, nil
|
||||
case "WITNESS_PUBKEYTYPE":
|
||||
return []ErrorCode{ErrWitnessPubKeyType}, nil
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("unrecognized expected result in test data: %v",
|
||||
expected)
|
||||
}
|
||||
|
||||
// createSpendTx generates a basic spending transaction given the passed
|
||||
// signature, witness and public key scripts.
|
||||
func createSpendingTx(witness [][]byte, sigScript, pkScript []byte,
|
||||
outputValue int64) *wire.MsgTx {
|
||||
|
||||
coinbaseTx := wire.NewMsgTx(wire.TxVersion)
|
||||
|
||||
outPoint := wire.NewOutPoint(&chainhash.Hash{}, ^uint32(0))
|
||||
txIn := wire.NewTxIn(outPoint, []byte{OP_0, OP_0}, nil)
|
||||
txOut := wire.NewTxOut(outputValue, pkScript)
|
||||
coinbaseTx.AddTxIn(txIn)
|
||||
coinbaseTx.AddTxOut(txOut)
|
||||
|
||||
spendingTx := wire.NewMsgTx(wire.TxVersion)
|
||||
coinbaseTxSha := coinbaseTx.TxHash()
|
||||
outPoint = wire.NewOutPoint(&coinbaseTxSha, 0)
|
||||
txIn = wire.NewTxIn(outPoint, sigScript, witness)
|
||||
txOut = wire.NewTxOut(outputValue, nil)
|
||||
|
||||
spendingTx.AddTxIn(txIn)
|
||||
spendingTx.AddTxOut(txOut)
|
||||
|
||||
return spendingTx
|
||||
}
|
||||
|
||||
// scriptWithInputVal wraps a target pkScript with the value of the output in
|
||||
// which it is contained. The inputVal is necessary in order to properly
|
||||
// validate inputs which spend nested, or native witness programs.
|
||||
type scriptWithInputVal struct {
|
||||
inputVal int64
|
||||
pkScript []byte
|
||||
}
|
||||
|
||||
// testScripts ensures all of the passed script tests execute with the expected
|
||||
// results with or without using a signature cache, as specified by the
|
||||
// parameter.
|
||||
func testScripts(t *testing.T, tests [][]interface{}, useSigCache bool) {
|
||||
// Create a signature cache to use only if requested.
|
||||
var sigCache *SigCache
|
||||
if useSigCache {
|
||||
sigCache = NewSigCache(10)
|
||||
}
|
||||
|
||||
for i, test := range tests {
|
||||
// "Format is: [[wit..., amount]?, scriptSig, scriptPubKey,
|
||||
// flags, expected_scripterror, ... comments]"
|
||||
|
||||
// Skip single line comments.
|
||||
if len(test) == 1 {
|
||||
continue
|
||||
}
|
||||
|
||||
// Construct a name for the test based on the comment and test
|
||||
// data.
|
||||
name, err := scriptTestName(test)
|
||||
if err != nil {
|
||||
t.Errorf("TestScripts: invalid test #%d: %v", i, err)
|
||||
continue
|
||||
}
|
||||
|
||||
var (
|
||||
witness wire.TxWitness
|
||||
inputAmt btcutil.Amount
|
||||
)
|
||||
|
||||
// When the first field of the test data is a slice it contains
|
||||
// witness data and everything else is offset by 1 as a result.
|
||||
witnessOffset := 0
|
||||
if witnessData, ok := test[0].([]interface{}); ok {
|
||||
witnessOffset++
|
||||
|
||||
// If this is a witness test, then the final element
|
||||
// within the slice is the input amount, so we ignore
|
||||
// all but the last element in order to parse the
|
||||
// witness stack.
|
||||
strWitnesses := witnessData[:len(witnessData)-1]
|
||||
witness, err = parseWitnessStack(strWitnesses)
|
||||
if err != nil {
|
||||
t.Errorf("%s: can't parse witness; %v", name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
inputAmt, err = btcutil.NewAmount(witnessData[len(witnessData)-1].(float64))
|
||||
if err != nil {
|
||||
t.Errorf("%s: can't parse input amt: %v",
|
||||
name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// Extract and parse the signature script from the test fields.
|
||||
scriptSigStr, ok := test[witnessOffset].(string)
|
||||
if !ok {
|
||||
t.Errorf("%s: signature script is not a string", name)
|
||||
continue
|
||||
}
|
||||
scriptSig, err := parseShortForm(scriptSigStr)
|
||||
if err != nil {
|
||||
t.Errorf("%s: can't parse signature script: %v", name,
|
||||
err)
|
||||
continue
|
||||
}
|
||||
|
||||
// Extract and parse the public key script from the test fields.
|
||||
scriptPubKeyStr, ok := test[witnessOffset+1].(string)
|
||||
if !ok {
|
||||
t.Errorf("%s: public key script is not a string", name)
|
||||
continue
|
||||
}
|
||||
scriptPubKey, err := parseShortForm(scriptPubKeyStr)
|
||||
if err != nil {
|
||||
t.Errorf("%s: can't parse public key script: %v", name,
|
||||
err)
|
||||
continue
|
||||
}
|
||||
|
||||
// Extract and parse the script flags from the test fields.
|
||||
flagsStr, ok := test[witnessOffset+2].(string)
|
||||
if !ok {
|
||||
t.Errorf("%s: flags field is not a string", name)
|
||||
continue
|
||||
}
|
||||
flags, err := parseScriptFlags(flagsStr)
|
||||
if err != nil {
|
||||
t.Errorf("%s: %v", name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
// Extract and parse the expected result from the test fields.
|
||||
//
|
||||
// Convert the expected result string into the allowed script
|
||||
// error codes. This is necessary because txscript is more
|
||||
// fine grained with its errors than the reference test data, so
|
||||
// some of the reference test data errors map to more than one
|
||||
// possibility.
|
||||
resultStr, ok := test[witnessOffset+3].(string)
|
||||
if !ok {
|
||||
t.Errorf("%s: result field is not a string", name)
|
||||
continue
|
||||
}
|
||||
allowedErrorCodes, err := parseExpectedResult(resultStr)
|
||||
if err != nil {
|
||||
t.Errorf("%s: %v", name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
// Generate a transaction pair such that one spends from the
|
||||
// other and the provided signature and public key scripts are
|
||||
// used, then create a new engine to execute the scripts.
|
||||
tx := createSpendingTx(witness, scriptSig, scriptPubKey,
|
||||
int64(inputAmt))
|
||||
vm, err := NewEngine(scriptPubKey, tx, 0, flags, sigCache, nil,
|
||||
int64(inputAmt))
|
||||
if err == nil {
|
||||
err = vm.Execute()
|
||||
}
|
||||
|
||||
// Ensure there were no errors when the expected result is OK.
|
||||
if resultStr == "OK" {
|
||||
if err != nil {
|
||||
t.Errorf("%s failed to execute: %v", name, err)
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// At this point an error was expected so ensure the result of
|
||||
// the execution matches it.
|
||||
success := false
|
||||
for _, code := range allowedErrorCodes {
|
||||
if IsErrorCode(err, code) {
|
||||
success = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !success {
|
||||
if serr, ok := err.(Error); ok {
|
||||
t.Errorf("%s: want error codes %v, got %v", name,
|
||||
allowedErrorCodes, serr.ErrorCode)
|
||||
continue
|
||||
}
|
||||
t.Errorf("%s: want error codes %v, got err: %v (%T)",
|
||||
name, allowedErrorCodes, err, err)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestScripts ensures all of the tests in script_tests.json execute with the
|
||||
// expected results as defined in the test data.
|
||||
func TestScripts(t *testing.T) {
|
||||
file, err := ioutil.ReadFile("data/script_tests.json")
|
||||
if err != nil {
|
||||
t.Fatalf("TestScripts: %v\n", err)
|
||||
}
|
||||
|
||||
var tests [][]interface{}
|
||||
err = json.Unmarshal(file, &tests)
|
||||
if err != nil {
|
||||
t.Fatalf("TestScripts couldn't Unmarshal: %v", err)
|
||||
}
|
||||
|
||||
// Run all script tests with and without the signature cache.
|
||||
testScripts(t, tests, true)
|
||||
testScripts(t, tests, false)
|
||||
}
|
||||
|
||||
// testVecF64ToUint32 properly handles conversion of float64s read from the JSON
|
||||
// test data to unsigned 32-bit integers. This is necessary because some of the
|
||||
// test data uses -1 as a shortcut to mean max uint32 and direct conversion of a
|
||||
// negative float to an unsigned int is implementation dependent and therefore
|
||||
// doesn't result in the expected value on all platforms. This function woks
|
||||
// around that limitation by converting to a 32-bit signed integer first and
|
||||
// then to a 32-bit unsigned integer which results in the expected behavior on
|
||||
// all platforms.
|
||||
func testVecF64ToUint32(f float64) uint32 {
|
||||
return uint32(int32(f))
|
||||
}
|
||||
|
||||
// TestTxInvalidTests ensures all of the tests in tx_invalid.json fail as
|
||||
// expected.
|
||||
func TestTxInvalidTests(t *testing.T) {
|
||||
file, err := ioutil.ReadFile("data/tx_invalid.json")
|
||||
if err != nil {
|
||||
t.Fatalf("TestTxInvalidTests: %v\n", err)
|
||||
}
|
||||
|
||||
var tests [][]interface{}
|
||||
err = json.Unmarshal(file, &tests)
|
||||
if err != nil {
|
||||
t.Fatalf("TestTxInvalidTests couldn't Unmarshal: %v\n", err)
|
||||
}
|
||||
|
||||
// form is either:
|
||||
// ["this is a comment "]
|
||||
// or:
|
||||
// [[[previous hash, previous index, previous scriptPubKey]...,]
|
||||
// serializedTransaction, verifyFlags]
|
||||
testloop:
|
||||
for i, test := range tests {
|
||||
inputs, ok := test[0].([]interface{})
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
if len(test) != 3 {
|
||||
t.Errorf("bad test (bad length) %d: %v", i, test)
|
||||
continue
|
||||
|
||||
}
|
||||
serializedhex, ok := test[1].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (arg 2 not string) %d: %v", i, test)
|
||||
continue
|
||||
}
|
||||
serializedTx, err := hex.DecodeString(serializedhex)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (arg 2 not hex %v) %d: %v", err, i,
|
||||
test)
|
||||
continue
|
||||
}
|
||||
|
||||
tx, err := btcutil.NewTxFromBytes(serializedTx)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (arg 2 not msgtx %v) %d: %v", err,
|
||||
i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
verifyFlags, ok := test[2].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (arg 3 not string) %d: %v", i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
flags, err := parseScriptFlags(verifyFlags)
|
||||
if err != nil {
|
||||
t.Errorf("bad test %d: %v", i, err)
|
||||
continue
|
||||
}
|
||||
|
||||
prevOuts := make(map[wire.OutPoint]scriptWithInputVal)
|
||||
for j, iinput := range inputs {
|
||||
input, ok := iinput.([]interface{})
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input not array)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
if len(input) < 3 || len(input) > 4 {
|
||||
t.Errorf("bad test (%dth input wrong length)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
previoustx, ok := input[0].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input hash not string)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
prevhash, err := chainhash.NewHashFromStr(previoustx)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (%dth input hash not hash %v)"+
|
||||
"%d: %v", j, err, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
idxf, ok := input[1].(float64)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input idx not number)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue testloop
|
||||
}
|
||||
idx := testVecF64ToUint32(idxf)
|
||||
|
||||
oscript, ok := input[2].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input script not "+
|
||||
"string) %d: %v", j, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
script, err := parseShortForm(oscript)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (%dth input script doesn't "+
|
||||
"parse %v) %d: %v", j, err, i, test)
|
||||
continue testloop
|
||||
}
|
||||
|
||||
var inputValue float64
|
||||
if len(input) == 4 {
|
||||
inputValue, ok = input[3].(float64)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input value not int) "+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
v := scriptWithInputVal{
|
||||
inputVal: int64(inputValue),
|
||||
pkScript: script,
|
||||
}
|
||||
prevOuts[*wire.NewOutPoint(prevhash, idx)] = v
|
||||
}
|
||||
|
||||
for k, txin := range tx.MsgTx().TxIn {
|
||||
prevOut, ok := prevOuts[txin.PreviousOutPoint]
|
||||
if !ok {
|
||||
t.Errorf("bad test (missing %dth input) %d:%v",
|
||||
k, i, test)
|
||||
continue testloop
|
||||
}
|
||||
// These are meant to fail, so as soon as the first
|
||||
// input fails the transaction has failed. (some of the
|
||||
// test txns have good inputs, too..
|
||||
vm, err := NewEngine(prevOut.pkScript, tx.MsgTx(), k,
|
||||
flags, nil, nil, prevOut.inputVal)
|
||||
if err != nil {
|
||||
continue testloop
|
||||
}
|
||||
|
||||
err = vm.Execute()
|
||||
if err != nil {
|
||||
continue testloop
|
||||
}
|
||||
|
||||
}
|
||||
t.Errorf("test (%d:%v) succeeded when should fail",
|
||||
i, test)
|
||||
}
|
||||
}
|
||||
|
||||
// TestTxValidTests ensures all of the tests in tx_valid.json pass as expected.
|
||||
func TestTxValidTests(t *testing.T) {
|
||||
file, err := ioutil.ReadFile("data/tx_valid.json")
|
||||
if err != nil {
|
||||
t.Fatalf("TestTxValidTests: %v\n", err)
|
||||
}
|
||||
|
||||
var tests [][]interface{}
|
||||
err = json.Unmarshal(file, &tests)
|
||||
if err != nil {
|
||||
t.Fatalf("TestTxValidTests couldn't Unmarshal: %v\n", err)
|
||||
}
|
||||
|
||||
// form is either:
|
||||
// ["this is a comment "]
|
||||
// or:
|
||||
// [[[previous hash, previous index, previous scriptPubKey, input value]...,]
|
||||
// serializedTransaction, verifyFlags]
|
||||
testloop:
|
||||
for i, test := range tests {
|
||||
inputs, ok := test[0].([]interface{})
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
if len(test) != 3 {
|
||||
t.Errorf("bad test (bad length) %d: %v", i, test)
|
||||
continue
|
||||
}
|
||||
serializedhex, ok := test[1].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (arg 2 not string) %d: %v", i, test)
|
||||
continue
|
||||
}
|
||||
serializedTx, err := hex.DecodeString(serializedhex)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (arg 2 not hex %v) %d: %v", err, i,
|
||||
test)
|
||||
continue
|
||||
}
|
||||
|
||||
tx, err := btcutil.NewTxFromBytes(serializedTx)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (arg 2 not msgtx %v) %d: %v", err,
|
||||
i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
verifyFlags, ok := test[2].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (arg 3 not string) %d: %v", i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
flags, err := parseScriptFlags(verifyFlags)
|
||||
if err != nil {
|
||||
t.Errorf("bad test %d: %v", i, err)
|
||||
continue
|
||||
}
|
||||
|
||||
prevOuts := make(map[wire.OutPoint]scriptWithInputVal)
|
||||
for j, iinput := range inputs {
|
||||
input, ok := iinput.([]interface{})
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input not array)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
if len(input) < 3 || len(input) > 4 {
|
||||
t.Errorf("bad test (%dth input wrong length)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
previoustx, ok := input[0].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input hash not string)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
prevhash, err := chainhash.NewHashFromStr(previoustx)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (%dth input hash not hash %v)"+
|
||||
"%d: %v", j, err, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
idxf, ok := input[1].(float64)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input idx not number)"+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
idx := testVecF64ToUint32(idxf)
|
||||
|
||||
oscript, ok := input[2].(string)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input script not "+
|
||||
"string) %d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
script, err := parseShortForm(oscript)
|
||||
if err != nil {
|
||||
t.Errorf("bad test (%dth input script doesn't "+
|
||||
"parse %v) %d: %v", j, err, i, test)
|
||||
continue
|
||||
}
|
||||
|
||||
var inputValue float64
|
||||
if len(input) == 4 {
|
||||
inputValue, ok = input[3].(float64)
|
||||
if !ok {
|
||||
t.Errorf("bad test (%dth input value not int) "+
|
||||
"%d: %v", j, i, test)
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
v := scriptWithInputVal{
|
||||
inputVal: int64(inputValue),
|
||||
pkScript: script,
|
||||
}
|
||||
prevOuts[*wire.NewOutPoint(prevhash, idx)] = v
|
||||
}
|
||||
|
||||
for k, txin := range tx.MsgTx().TxIn {
|
||||
prevOut, ok := prevOuts[txin.PreviousOutPoint]
|
||||
if !ok {
|
||||
t.Errorf("bad test (missing %dth input) %d:%v",
|
||||
k, i, test)
|
||||
continue testloop
|
||||
}
|
||||
vm, err := NewEngine(prevOut.pkScript, tx.MsgTx(), k,
|
||||
flags, nil, nil, prevOut.inputVal)
|
||||
if err != nil {
|
||||
t.Errorf("test (%d:%v:%d) failed to create "+
|
||||
"script: %v", i, test, k, err)
|
||||
continue
|
||||
}
|
||||
|
||||
err = vm.Execute()
|
||||
if err != nil {
|
||||
t.Errorf("test (%d:%v:%d) failed to execute: "+
|
||||
"%v", i, test, k, err)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestCalcSignatureHash runs the Bitcoin Core signature hash calculation tests
|
||||
// in sighash.json.
|
||||
// https://github.com/bitcoin/bitcoin/blob/master/src/test/data/sighash.json
|
||||
func TestCalcSignatureHash(t *testing.T) {
|
||||
file, err := ioutil.ReadFile("data/sighash.json")
|
||||
if err != nil {
|
||||
t.Fatalf("TestCalcSignatureHash: %v\n", err)
|
||||
}
|
||||
|
||||
var tests [][]interface{}
|
||||
err = json.Unmarshal(file, &tests)
|
||||
if err != nil {
|
||||
t.Fatalf("TestCalcSignatureHash couldn't Unmarshal: %v\n",
|
||||
err)
|
||||
}
|
||||
|
||||
for i, test := range tests {
|
||||
if i == 0 {
|
||||
// Skip first line -- contains comments only.
|
||||
continue
|
||||
}
|
||||
if len(test) != 5 {
|
||||
t.Fatalf("TestCalcSignatureHash: Test #%d has "+
|
||||
"wrong length.", i)
|
||||
}
|
||||
var tx wire.MsgTx
|
||||
rawTx, _ := hex.DecodeString(test[0].(string))
|
||||
err := tx.Deserialize(bytes.NewReader(rawTx))
|
||||
if err != nil {
|
||||
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
||||
"Failed to parse transaction: %v", i, err)
|
||||
continue
|
||||
}
|
||||
|
||||
subScript, _ := hex.DecodeString(test[1].(string))
|
||||
parsedScript, err := parseScript(subScript)
|
||||
if err != nil {
|
||||
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
||||
"Failed to parse sub-script: %v", i, err)
|
||||
continue
|
||||
}
|
||||
|
||||
hashType := SigHashType(testVecF64ToUint32(test[3].(float64)))
|
||||
hash := calcSignatureHash(parsedScript, hashType, &tx,
|
||||
int(test[2].(float64)))
|
||||
|
||||
expectedHash, _ := chainhash.NewHashFromStr(test[4].(string))
|
||||
if !bytes.Equal(hash, expectedHash[:]) {
|
||||
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
||||
"Signature hash mismatch.", i)
|
||||
}
|
||||
}
|
||||
}
|
||||
+849
@@ -0,0 +1,849 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
)
|
||||
|
||||
// Bip16Activation is the timestamp where BIP0016 is valid to use in the
|
||||
// blockchain. To be used to determine if BIP0016 should be called for or not.
|
||||
// This timestamp corresponds to Sun Apr 1 00:00:00 UTC 2012.
|
||||
var Bip16Activation = time.Unix(1333238400, 0)
|
||||
|
||||
// SigHashType represents hash type bits at the end of a signature.
|
||||
type SigHashType uint32
|
||||
|
||||
// Hash type bits from the end of a signature.
|
||||
const (
|
||||
SigHashOld SigHashType = 0x0
|
||||
SigHashAll SigHashType = 0x1
|
||||
SigHashNone SigHashType = 0x2
|
||||
SigHashSingle SigHashType = 0x3
|
||||
SigHashAnyOneCanPay SigHashType = 0x80
|
||||
|
||||
// sigHashMask defines the number of bits of the hash type which is used
|
||||
// to identify which outputs are signed.
|
||||
sigHashMask = 0x1f
|
||||
)
|
||||
|
||||
// These are the constants specified for maximums in individual scripts.
|
||||
const (
|
||||
MaxOpsPerScript = 201 // Max number of non-push operations.
|
||||
MaxPubKeysPerMultiSig = 20 // Multisig can't have more sigs than this.
|
||||
MaxScriptElementSize = 520 // Max bytes pushable to the stack.
|
||||
)
|
||||
|
||||
// isSmallInt returns whether or not the opcode is considered a small integer,
|
||||
// which is an OP_0, or OP_1 through OP_16.
|
||||
func isSmallInt(op *opcode) bool {
|
||||
if op.value == OP_0 || (op.value >= OP_1 && op.value <= OP_16) {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// isScriptHash returns true if the script passed is a pay-to-script-hash
|
||||
// transaction, false otherwise.
|
||||
func isScriptHash(pops []parsedOpcode) bool {
|
||||
return len(pops) == 3 &&
|
||||
pops[0].opcode.value == OP_HASH160 &&
|
||||
pops[1].opcode.value == OP_DATA_20 &&
|
||||
pops[2].opcode.value == OP_EQUAL
|
||||
}
|
||||
|
||||
// IsPayToScriptHash returns true if the script is in the standard
|
||||
// pay-to-script-hash (P2SH) format, false otherwise.
|
||||
func IsPayToScriptHash(script []byte) bool {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return isScriptHash(pops)
|
||||
}
|
||||
|
||||
// isWitnessScriptHash returns true if the passed script is a
|
||||
// pay-to-witness-script-hash transaction, false otherwise.
|
||||
func isWitnessScriptHash(pops []parsedOpcode) bool {
|
||||
return len(pops) == 2 &&
|
||||
pops[0].opcode.value == OP_0 &&
|
||||
pops[1].opcode.value == OP_DATA_32
|
||||
}
|
||||
|
||||
// IsPayToWitnessScriptHash returns true if the is in the standard
|
||||
// pay-to-witness-script-hash (P2WSH) format, false otherwise.
|
||||
func IsPayToWitnessScriptHash(script []byte) bool {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return isWitnessScriptHash(pops)
|
||||
}
|
||||
|
||||
// IsPayToWitnessPubKeyHash returns true if the is in the standard
|
||||
// pay-to-witness-pubkey-hash (P2WKH) format, false otherwise.
|
||||
func IsPayToWitnessPubKeyHash(script []byte) bool {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return isWitnessPubKeyHash(pops)
|
||||
}
|
||||
|
||||
// isWitnessPubKeyHash returns true if the passed script is a
|
||||
// pay-to-witness-pubkey-hash, and false otherwise.
|
||||
func isWitnessPubKeyHash(pops []parsedOpcode) bool {
|
||||
return len(pops) == 2 &&
|
||||
pops[0].opcode.value == OP_0 &&
|
||||
pops[1].opcode.value == OP_DATA_20
|
||||
}
|
||||
|
||||
// IsWitnessProgram returns true if the passed script is a valid witness
|
||||
// program which is encoded according to the passed witness program version. A
|
||||
// witness program must be a small integer (from 0-16), followed by 2-40 bytes
|
||||
// of pushed data.
|
||||
func IsWitnessProgram(script []byte) bool {
|
||||
// The length of the script must be between 4 and 42 bytes. The
|
||||
// smallest program is the witness version, followed by a data push of
|
||||
// 2 bytes. The largest allowed witness program has a data push of
|
||||
// 40-bytes.
|
||||
if len(script) < 4 || len(script) > 42 {
|
||||
return false
|
||||
}
|
||||
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
return isWitnessProgram(pops)
|
||||
}
|
||||
|
||||
// isWitnessProgram returns true if the passed script is a witness program, and
|
||||
// false otherwise. A witness program MUST adhere to the following constraints:
|
||||
// there must be excatly two pops (program version and the program itself), the
|
||||
// first opcode MUST be a small integer (0-16), the push data MUST be
|
||||
// cannonical, and finally the size of the push data must be between 2 and 40
|
||||
// bytes.
|
||||
func isWitnessProgram(pops []parsedOpcode) bool {
|
||||
return len(pops) == 2 &&
|
||||
isSmallInt(pops[0].opcode) &&
|
||||
canonicalPush(pops[1]) &&
|
||||
(len(pops[1].data) >= 2 && len(pops[1].data) <= 40)
|
||||
}
|
||||
|
||||
// ExtractWitnessProgramInfo attempts to extract the witness program version,
|
||||
// as well as the witness program itself from the passed script.
|
||||
func ExtractWitnessProgramInfo(script []byte) (int, []byte, error) {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return 0, nil, err
|
||||
}
|
||||
|
||||
// If at this point, the scripts doesn't resemble a witness program,
|
||||
// then we'll exit early as there isn't a valid version or program to
|
||||
// extract.
|
||||
if !isWitnessProgram(pops) {
|
||||
return 0, nil, fmt.Errorf("script is not a witness program, " +
|
||||
"unable to extract version or witness program")
|
||||
}
|
||||
|
||||
witnessVersion := asSmallInt(pops[0].opcode)
|
||||
witnessProgram := pops[1].data
|
||||
|
||||
return witnessVersion, witnessProgram, nil
|
||||
}
|
||||
|
||||
// isPushOnly returns true if the script only pushes data, false otherwise.
|
||||
func isPushOnly(pops []parsedOpcode) bool {
|
||||
// NOTE: This function does NOT verify opcodes directly since it is
|
||||
// internal and is only called with parsed opcodes for scripts that did
|
||||
// not have any parse errors. Thus, consensus is properly maintained.
|
||||
|
||||
for _, pop := range pops {
|
||||
// All opcodes up to OP_16 are data push instructions.
|
||||
// NOTE: This does consider OP_RESERVED to be a data push
|
||||
// instruction, but execution of OP_RESERVED will fail anyways
|
||||
// and matches the behavior required by consensus.
|
||||
if pop.opcode.value > OP_16 {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// IsPushOnlyScript returns whether or not the passed script only pushes data.
|
||||
//
|
||||
// False will be returned when the script does not parse.
|
||||
func IsPushOnlyScript(script []byte) bool {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
return isPushOnly(pops)
|
||||
}
|
||||
|
||||
// parseScriptTemplate is the same as parseScript but allows the passing of the
|
||||
// template list for testing purposes. When there are parse errors, it returns
|
||||
// the list of parsed opcodes up to the point of failure along with the error.
|
||||
func parseScriptTemplate(script []byte, opcodes *[256]opcode) ([]parsedOpcode, error) {
|
||||
retScript := make([]parsedOpcode, 0, len(script))
|
||||
for i := 0; i < len(script); {
|
||||
instr := script[i]
|
||||
op := &opcodes[instr]
|
||||
pop := parsedOpcode{opcode: op}
|
||||
|
||||
// Parse data out of instruction.
|
||||
switch {
|
||||
// No additional data. Note that some of the opcodes, notably
|
||||
// OP_1NEGATE, OP_0, and OP_[1-16] represent the data
|
||||
// themselves.
|
||||
case op.length == 1:
|
||||
i++
|
||||
|
||||
// Data pushes of specific lengths -- OP_DATA_[1-75].
|
||||
case op.length > 1:
|
||||
if len(script[i:]) < op.length {
|
||||
str := fmt.Sprintf("opcode %s requires %d "+
|
||||
"bytes, but script only has %d remaining",
|
||||
op.name, op.length, len(script[i:]))
|
||||
return retScript, scriptError(ErrMalformedPush,
|
||||
str)
|
||||
}
|
||||
|
||||
// Slice out the data.
|
||||
pop.data = script[i+1 : i+op.length]
|
||||
i += op.length
|
||||
|
||||
// Data pushes with parsed lengths -- OP_PUSHDATAP{1,2,4}.
|
||||
case op.length < 0:
|
||||
var l uint
|
||||
off := i + 1
|
||||
|
||||
if len(script[off:]) < -op.length {
|
||||
str := fmt.Sprintf("opcode %s requires %d "+
|
||||
"bytes, but script only has %d remaining",
|
||||
op.name, -op.length, len(script[off:]))
|
||||
return retScript, scriptError(ErrMalformedPush,
|
||||
str)
|
||||
}
|
||||
|
||||
// Next -length bytes are little endian length of data.
|
||||
switch op.length {
|
||||
case -1:
|
||||
l = uint(script[off])
|
||||
case -2:
|
||||
l = ((uint(script[off+1]) << 8) |
|
||||
uint(script[off]))
|
||||
case -4:
|
||||
l = ((uint(script[off+3]) << 24) |
|
||||
(uint(script[off+2]) << 16) |
|
||||
(uint(script[off+1]) << 8) |
|
||||
uint(script[off]))
|
||||
default:
|
||||
str := fmt.Sprintf("invalid opcode length %d",
|
||||
op.length)
|
||||
return retScript, scriptError(ErrMalformedPush,
|
||||
str)
|
||||
}
|
||||
|
||||
// Move offset to beginning of the data.
|
||||
off += -op.length
|
||||
|
||||
// Disallow entries that do not fit script or were
|
||||
// sign extended.
|
||||
if int(l) > len(script[off:]) || int(l) < 0 {
|
||||
str := fmt.Sprintf("opcode %s pushes %d bytes, "+
|
||||
"but script only has %d remaining",
|
||||
op.name, int(l), len(script[off:]))
|
||||
return retScript, scriptError(ErrMalformedPush,
|
||||
str)
|
||||
}
|
||||
|
||||
pop.data = script[off : off+int(l)]
|
||||
i += 1 - op.length + int(l)
|
||||
}
|
||||
|
||||
retScript = append(retScript, pop)
|
||||
}
|
||||
|
||||
return retScript, nil
|
||||
}
|
||||
|
||||
// parseScript preparses the script in bytes into a list of parsedOpcodes while
|
||||
// applying a number of sanity checks.
|
||||
func parseScript(script []byte) ([]parsedOpcode, error) {
|
||||
return parseScriptTemplate(script, &opcodeArray)
|
||||
}
|
||||
|
||||
// unparseScript reversed the action of parseScript and returns the
|
||||
// parsedOpcodes as a list of bytes
|
||||
func unparseScript(pops []parsedOpcode) ([]byte, error) {
|
||||
script := make([]byte, 0, len(pops))
|
||||
for _, pop := range pops {
|
||||
b, err := pop.bytes()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
script = append(script, b...)
|
||||
}
|
||||
return script, nil
|
||||
}
|
||||
|
||||
// DisasmString formats a disassembled script for one line printing. When the
|
||||
// script fails to parse, the returned string will contain the disassembled
|
||||
// script up to the point the failure occurred along with the string '[error]'
|
||||
// appended. In addition, the reason the script failed to parse is returned
|
||||
// if the caller wants more information about the failure.
|
||||
func DisasmString(buf []byte) (string, error) {
|
||||
var disbuf bytes.Buffer
|
||||
opcodes, err := parseScript(buf)
|
||||
for _, pop := range opcodes {
|
||||
disbuf.WriteString(pop.print(true))
|
||||
disbuf.WriteByte(' ')
|
||||
}
|
||||
if disbuf.Len() > 0 {
|
||||
disbuf.Truncate(disbuf.Len() - 1)
|
||||
}
|
||||
if err != nil {
|
||||
disbuf.WriteString("[error]")
|
||||
}
|
||||
return disbuf.String(), err
|
||||
}
|
||||
|
||||
// removeOpcode will remove any opcode matching ``opcode'' from the opcode
|
||||
// stream in pkscript
|
||||
func removeOpcode(pkscript []parsedOpcode, opcode byte) []parsedOpcode {
|
||||
retScript := make([]parsedOpcode, 0, len(pkscript))
|
||||
for _, pop := range pkscript {
|
||||
if pop.opcode.value != opcode {
|
||||
retScript = append(retScript, pop)
|
||||
}
|
||||
}
|
||||
return retScript
|
||||
}
|
||||
|
||||
// canonicalPush returns true if the object is either not a push instruction
|
||||
// or the push instruction contained wherein is matches the canonical form
|
||||
// or using the smallest instruction to do the job. False otherwise.
|
||||
func canonicalPush(pop parsedOpcode) bool {
|
||||
opcode := pop.opcode.value
|
||||
data := pop.data
|
||||
dataLen := len(pop.data)
|
||||
if opcode > OP_16 {
|
||||
return true
|
||||
}
|
||||
|
||||
if opcode < OP_PUSHDATA1 && opcode > OP_0 && (dataLen == 1 && data[0] <= 16) {
|
||||
return false
|
||||
}
|
||||
if opcode == OP_PUSHDATA1 && dataLen < OP_PUSHDATA1 {
|
||||
return false
|
||||
}
|
||||
if opcode == OP_PUSHDATA2 && dataLen <= 0xff {
|
||||
return false
|
||||
}
|
||||
if opcode == OP_PUSHDATA4 && dataLen <= 0xffff {
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// removeOpcodeByData will return the script minus any opcodes that would push
|
||||
// the passed data to the stack.
|
||||
func removeOpcodeByData(pkscript []parsedOpcode, data []byte) []parsedOpcode {
|
||||
retScript := make([]parsedOpcode, 0, len(pkscript))
|
||||
for _, pop := range pkscript {
|
||||
if !canonicalPush(pop) || !bytes.Contains(pop.data, data) {
|
||||
retScript = append(retScript, pop)
|
||||
}
|
||||
}
|
||||
return retScript
|
||||
|
||||
}
|
||||
|
||||
// calcHashPrevOuts calculates a single hash of all the previous outputs
|
||||
// (txid:index) referenced within the passed transaction. This calculated hash
|
||||
// can be re-used when validating all inputs spending segwit outputs, with a
|
||||
// signature hash type of SigHashAll. This allows validation to re-use previous
|
||||
// hashing computation, reducing the complexity of validating SigHashAll inputs
|
||||
// from O(N^2) to O(N).
|
||||
func calcHashPrevOuts(tx *wire.MsgTx) chainhash.Hash {
|
||||
var b bytes.Buffer
|
||||
for _, in := range tx.TxIn {
|
||||
// First write out the 32-byte transaction ID one of whose
|
||||
// outputs are being referenced by this input.
|
||||
b.Write(in.PreviousOutPoint.Hash[:])
|
||||
|
||||
// Next, we'll encode the index of the referenced output as a
|
||||
// little endian integer.
|
||||
var buf [4]byte
|
||||
binary.LittleEndian.PutUint32(buf[:], in.PreviousOutPoint.Index)
|
||||
b.Write(buf[:])
|
||||
}
|
||||
|
||||
return chainhash.DoubleHashH(b.Bytes())
|
||||
}
|
||||
|
||||
// calcHashSequence computes an aggregated hash of each of the sequence numbers
|
||||
// within the inputs of the passed transaction. This single hash can be re-used
|
||||
// when validating all inputs spending segwit outputs, which include signatures
|
||||
// using the SigHashAll sighash type. This allows validation to re-use previous
|
||||
// hashing computation, reducing the complexity of validating SigHashAll inputs
|
||||
// from O(N^2) to O(N).
|
||||
func calcHashSequence(tx *wire.MsgTx) chainhash.Hash {
|
||||
var b bytes.Buffer
|
||||
for _, in := range tx.TxIn {
|
||||
var buf [4]byte
|
||||
binary.LittleEndian.PutUint32(buf[:], in.Sequence)
|
||||
b.Write(buf[:])
|
||||
}
|
||||
|
||||
return chainhash.DoubleHashH(b.Bytes())
|
||||
}
|
||||
|
||||
// calcHashOutputs computes a hash digest of all outputs created by the
|
||||
// transaction encoded using the wire format. This single hash can be re-used
|
||||
// when validating all inputs spending witness programs, which include
|
||||
// signatures using the SigHashAll sighash type. This allows computation to be
|
||||
// cached, reducing the total hashing complexity from O(N^2) to O(N).
|
||||
func calcHashOutputs(tx *wire.MsgTx) chainhash.Hash {
|
||||
var b bytes.Buffer
|
||||
for _, out := range tx.TxOut {
|
||||
wire.WriteTxOut(&b, 0, 0, out)
|
||||
}
|
||||
|
||||
return chainhash.DoubleHashH(b.Bytes())
|
||||
}
|
||||
|
||||
// calcWitnessSignatureHash computes the sighash digest of a transaction's
|
||||
// segwit input using the new, optimized digest calculation algorithm defined
|
||||
// in BIP0143: https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki.
|
||||
// This function makes use of pre-calculated sighash fragments stored within
|
||||
// the passed HashCache to eliminate duplicate hashing computations when
|
||||
// calculating the final digest, reducing the complexity from O(N^2) to O(N).
|
||||
// Additionally, signatures now cover the input value of the referenced unspent
|
||||
// output. This allows offline, or hardware wallets to compute the exact amount
|
||||
// being spent, in addition to the final transaction fee. In the case the
|
||||
// wallet if fed an invalid input amount, the real sighash will differ causing
|
||||
// the produced signature to be invalid.
|
||||
func calcWitnessSignatureHash(subScript []parsedOpcode, sigHashes *TxSigHashes,
|
||||
hashType SigHashType, tx *wire.MsgTx, idx int, amt int64) ([]byte, error) {
|
||||
|
||||
// As a sanity check, ensure the passed input index for the transaction
|
||||
// is valid.
|
||||
if idx > len(tx.TxIn)-1 {
|
||||
return nil, fmt.Errorf("idx %d but %d txins", idx, len(tx.TxIn))
|
||||
}
|
||||
|
||||
// We'll utilize this buffer throughout to incrementally calculate
|
||||
// the signature hash for this transaction.
|
||||
var sigHash bytes.Buffer
|
||||
|
||||
// First write out, then encode the transaction's version number.
|
||||
var bVersion [4]byte
|
||||
binary.LittleEndian.PutUint32(bVersion[:], uint32(tx.Version))
|
||||
sigHash.Write(bVersion[:])
|
||||
|
||||
// Next write out the possibly pre-calculated hashes for the sequence
|
||||
// numbers of all inputs, and the hashes of the previous outs for all
|
||||
// outputs.
|
||||
var zeroHash chainhash.Hash
|
||||
|
||||
// If anyone can pay isn't active, then we can use the cached
|
||||
// hashPrevOuts, otherwise we just write zeroes for the prev outs.
|
||||
if hashType&SigHashAnyOneCanPay == 0 {
|
||||
sigHash.Write(sigHashes.HashPrevOuts[:])
|
||||
} else {
|
||||
sigHash.Write(zeroHash[:])
|
||||
}
|
||||
|
||||
// If the sighash isn't anyone can pay, single, or none, the use the
|
||||
// cached hash sequences, otherwise write all zeroes for the
|
||||
// hashSequence.
|
||||
if hashType&SigHashAnyOneCanPay == 0 &&
|
||||
hashType&sigHashMask != SigHashSingle &&
|
||||
hashType&sigHashMask != SigHashNone {
|
||||
sigHash.Write(sigHashes.HashSequence[:])
|
||||
} else {
|
||||
sigHash.Write(zeroHash[:])
|
||||
}
|
||||
|
||||
txIn := tx.TxIn[idx]
|
||||
|
||||
// Next, write the outpoint being spent.
|
||||
sigHash.Write(txIn.PreviousOutPoint.Hash[:])
|
||||
var bIndex [4]byte
|
||||
binary.LittleEndian.PutUint32(bIndex[:], txIn.PreviousOutPoint.Index)
|
||||
sigHash.Write(bIndex[:])
|
||||
|
||||
if isWitnessPubKeyHash(subScript) {
|
||||
// The script code for a p2wkh is a length prefix varint for
|
||||
// the next 25 bytes, followed by a re-creation of the original
|
||||
// p2pkh pk script.
|
||||
sigHash.Write([]byte{0x19})
|
||||
sigHash.Write([]byte{OP_DUP})
|
||||
sigHash.Write([]byte{OP_HASH160})
|
||||
sigHash.Write([]byte{OP_DATA_20})
|
||||
sigHash.Write(subScript[1].data)
|
||||
sigHash.Write([]byte{OP_EQUALVERIFY})
|
||||
sigHash.Write([]byte{OP_CHECKSIG})
|
||||
} else {
|
||||
// For p2wsh outputs, and future outputs, the script code is
|
||||
// the original script, with all code separators removed,
|
||||
// serialized with a var int length prefix.
|
||||
rawScript, _ := unparseScript(subScript)
|
||||
wire.WriteVarBytes(&sigHash, 0, rawScript)
|
||||
}
|
||||
|
||||
// Next, add the input amount, and sequence number of the input being
|
||||
// signed.
|
||||
var bAmount [8]byte
|
||||
binary.LittleEndian.PutUint64(bAmount[:], uint64(amt))
|
||||
sigHash.Write(bAmount[:])
|
||||
var bSequence [4]byte
|
||||
binary.LittleEndian.PutUint32(bSequence[:], txIn.Sequence)
|
||||
sigHash.Write(bSequence[:])
|
||||
|
||||
// If the current signature mode isn't single, or none, then we can
|
||||
// re-use the pre-generated hashoutputs sighash fragment. Otherwise,
|
||||
// we'll serialize and add only the target output index to the signature
|
||||
// pre-image.
|
||||
if hashType&SigHashSingle != SigHashSingle &&
|
||||
hashType&SigHashNone != SigHashNone {
|
||||
sigHash.Write(sigHashes.HashOutputs[:])
|
||||
} else if hashType&sigHashMask == SigHashSingle && idx < len(tx.TxOut) {
|
||||
var b bytes.Buffer
|
||||
wire.WriteTxOut(&b, 0, 0, tx.TxOut[idx])
|
||||
sigHash.Write(chainhash.DoubleHashB(b.Bytes()))
|
||||
} else {
|
||||
sigHash.Write(zeroHash[:])
|
||||
}
|
||||
|
||||
// Finally, write out the transaction's locktime, and the sig hash
|
||||
// type.
|
||||
var bLockTime [4]byte
|
||||
binary.LittleEndian.PutUint32(bLockTime[:], tx.LockTime)
|
||||
sigHash.Write(bLockTime[:])
|
||||
var bHashType [4]byte
|
||||
binary.LittleEndian.PutUint32(bHashType[:], uint32(hashType))
|
||||
sigHash.Write(bHashType[:])
|
||||
|
||||
return chainhash.DoubleHashB(sigHash.Bytes()), nil
|
||||
}
|
||||
|
||||
// CalcWitnessSigHash computes the sighash digest for the specified input of
|
||||
// the target transaction observing the desired sig hash type.
|
||||
func CalcWitnessSigHash(script []byte, sigHashes *TxSigHashes, hType SigHashType,
|
||||
tx *wire.MsgTx, idx int, amt int64) ([]byte, error) {
|
||||
|
||||
parsedScript, err := parseScript(script)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("cannot parse output script: %v", err)
|
||||
}
|
||||
|
||||
return calcWitnessSignatureHash(parsedScript, sigHashes, hType, tx, idx,
|
||||
amt)
|
||||
}
|
||||
|
||||
// shallowCopyTx creates a shallow copy of the transaction for use when
|
||||
// calculating the signature hash. It is used over the Copy method on the
|
||||
// transaction itself since that is a deep copy and therefore does more work and
|
||||
// allocates much more space than needed.
|
||||
func shallowCopyTx(tx *wire.MsgTx) wire.MsgTx {
|
||||
// As an additional memory optimization, use contiguous backing arrays
|
||||
// for the copied inputs and outputs and point the final slice of
|
||||
// pointers into the contiguous arrays. This avoids a lot of small
|
||||
// allocations.
|
||||
txCopy := wire.MsgTx{
|
||||
Version: tx.Version,
|
||||
TxIn: make([]*wire.TxIn, len(tx.TxIn)),
|
||||
TxOut: make([]*wire.TxOut, len(tx.TxOut)),
|
||||
LockTime: tx.LockTime,
|
||||
}
|
||||
txIns := make([]wire.TxIn, len(tx.TxIn))
|
||||
for i, oldTxIn := range tx.TxIn {
|
||||
txIns[i] = *oldTxIn
|
||||
txCopy.TxIn[i] = &txIns[i]
|
||||
}
|
||||
txOuts := make([]wire.TxOut, len(tx.TxOut))
|
||||
for i, oldTxOut := range tx.TxOut {
|
||||
txOuts[i] = *oldTxOut
|
||||
txCopy.TxOut[i] = &txOuts[i]
|
||||
}
|
||||
return txCopy
|
||||
}
|
||||
|
||||
// calcSignatureHash will, given a script and hash type for the current script
|
||||
// engine instance, calculate the signature hash to be used for signing and
|
||||
// verification.
|
||||
func calcSignatureHash(script []parsedOpcode, hashType SigHashType, tx *wire.MsgTx, idx int) []byte {
|
||||
// The SigHashSingle signature type signs only the corresponding input
|
||||
// and output (the output with the same index number as the input).
|
||||
//
|
||||
// Since transactions can have more inputs than outputs, this means it
|
||||
// is improper to use SigHashSingle on input indices that don't have a
|
||||
// corresponding output.
|
||||
//
|
||||
// A bug in the original Satoshi client implementation means specifying
|
||||
// an index that is out of range results in a signature hash of 1 (as a
|
||||
// uint256 little endian). The original intent appeared to be to
|
||||
// indicate failure, but unfortunately, it was never checked and thus is
|
||||
// treated as the actual signature hash. This buggy behavior is now
|
||||
// part of the consensus and a hard fork would be required to fix it.
|
||||
//
|
||||
// Due to this, care must be taken by software that creates transactions
|
||||
// which make use of SigHashSingle because it can lead to an extremely
|
||||
// dangerous situation where the invalid inputs will end up signing a
|
||||
// hash of 1. This in turn presents an opportunity for attackers to
|
||||
// cleverly construct transactions which can steal those coins provided
|
||||
// they can reuse signatures.
|
||||
if hashType&sigHashMask == SigHashSingle && idx >= len(tx.TxOut) {
|
||||
var hash chainhash.Hash
|
||||
hash[0] = 0x01
|
||||
return hash[:]
|
||||
}
|
||||
|
||||
// Remove all instances of OP_CODESEPARATOR from the script.
|
||||
script = removeOpcode(script, OP_CODESEPARATOR)
|
||||
|
||||
// Make a shallow copy of the transaction, zeroing out the script for
|
||||
// all inputs that are not currently being processed.
|
||||
txCopy := shallowCopyTx(tx)
|
||||
for i := range txCopy.TxIn {
|
||||
if i == idx {
|
||||
// UnparseScript cannot fail here because removeOpcode
|
||||
// above only returns a valid script.
|
||||
sigScript, _ := unparseScript(script)
|
||||
txCopy.TxIn[idx].SignatureScript = sigScript
|
||||
} else {
|
||||
txCopy.TxIn[i].SignatureScript = nil
|
||||
}
|
||||
}
|
||||
|
||||
switch hashType & sigHashMask {
|
||||
case SigHashNone:
|
||||
txCopy.TxOut = txCopy.TxOut[0:0] // Empty slice.
|
||||
for i := range txCopy.TxIn {
|
||||
if i != idx {
|
||||
txCopy.TxIn[i].Sequence = 0
|
||||
}
|
||||
}
|
||||
|
||||
case SigHashSingle:
|
||||
// Resize output array to up to and including requested index.
|
||||
txCopy.TxOut = txCopy.TxOut[:idx+1]
|
||||
|
||||
// All but current output get zeroed out.
|
||||
for i := 0; i < idx; i++ {
|
||||
txCopy.TxOut[i].Value = -1
|
||||
txCopy.TxOut[i].PkScript = nil
|
||||
}
|
||||
|
||||
// Sequence on all other inputs is 0, too.
|
||||
for i := range txCopy.TxIn {
|
||||
if i != idx {
|
||||
txCopy.TxIn[i].Sequence = 0
|
||||
}
|
||||
}
|
||||
|
||||
default:
|
||||
// Consensus treats undefined hashtypes like normal SigHashAll
|
||||
// for purposes of hash generation.
|
||||
fallthrough
|
||||
case SigHashOld:
|
||||
fallthrough
|
||||
case SigHashAll:
|
||||
// Nothing special here.
|
||||
}
|
||||
if hashType&SigHashAnyOneCanPay != 0 {
|
||||
txCopy.TxIn = txCopy.TxIn[idx : idx+1]
|
||||
}
|
||||
|
||||
// The final hash is the double sha256 of both the serialized modified
|
||||
// transaction and the hash type (encoded as a 4-byte little-endian
|
||||
// value) appended.
|
||||
wbuf := bytes.NewBuffer(make([]byte, 0, txCopy.SerializeSizeStripped()+4))
|
||||
txCopy.SerializeNoWitness(wbuf)
|
||||
binary.Write(wbuf, binary.LittleEndian, hashType)
|
||||
return chainhash.DoubleHashB(wbuf.Bytes())
|
||||
}
|
||||
|
||||
// asSmallInt returns the passed opcode, which must be true according to
|
||||
// isSmallInt(), as an integer.
|
||||
func asSmallInt(op *opcode) int {
|
||||
if op.value == OP_0 {
|
||||
return 0
|
||||
}
|
||||
|
||||
return int(op.value - (OP_1 - 1))
|
||||
}
|
||||
|
||||
// getSigOpCount is the implementation function for counting the number of
|
||||
// signature operations in the script provided by pops. If precise mode is
|
||||
// requested then we attempt to count the number of operations for a multisig
|
||||
// op. Otherwise we use the maximum.
|
||||
func getSigOpCount(pops []parsedOpcode, precise bool) int {
|
||||
nSigs := 0
|
||||
for i, pop := range pops {
|
||||
switch pop.opcode.value {
|
||||
case OP_CHECKSIG:
|
||||
fallthrough
|
||||
case OP_CHECKSIGVERIFY:
|
||||
nSigs++
|
||||
case OP_CHECKMULTISIG:
|
||||
fallthrough
|
||||
case OP_CHECKMULTISIGVERIFY:
|
||||
// If we are being precise then look for familiar
|
||||
// patterns for multisig, for now all we recognize is
|
||||
// OP_1 - OP_16 to signify the number of pubkeys.
|
||||
// Otherwise, we use the max of 20.
|
||||
if precise && i > 0 &&
|
||||
pops[i-1].opcode.value >= OP_1 &&
|
||||
pops[i-1].opcode.value <= OP_16 {
|
||||
nSigs += asSmallInt(pops[i-1].opcode)
|
||||
} else {
|
||||
nSigs += MaxPubKeysPerMultiSig
|
||||
}
|
||||
default:
|
||||
// Not a sigop.
|
||||
}
|
||||
}
|
||||
|
||||
return nSigs
|
||||
}
|
||||
|
||||
// GetSigOpCount provides a quick count of the number of signature operations
|
||||
// in a script. a CHECKSIG operations counts for 1, and a CHECK_MULTISIG for 20.
|
||||
// If the script fails to parse, then the count up to the point of failure is
|
||||
// returned.
|
||||
func GetSigOpCount(script []byte) int {
|
||||
// Don't check error since parseScript returns the parsed-up-to-error
|
||||
// list of pops.
|
||||
pops, _ := parseScript(script)
|
||||
return getSigOpCount(pops, false)
|
||||
}
|
||||
|
||||
// GetPreciseSigOpCount returns the number of signature operations in
|
||||
// scriptPubKey. If bip16 is true then scriptSig may be searched for the
|
||||
// Pay-To-Script-Hash script in order to find the precise number of signature
|
||||
// operations in the transaction. If the script fails to parse, then the count
|
||||
// up to the point of failure is returned.
|
||||
func GetPreciseSigOpCount(scriptSig, scriptPubKey []byte, bip16 bool) int {
|
||||
// Don't check error since parseScript returns the parsed-up-to-error
|
||||
// list of pops.
|
||||
pops, _ := parseScript(scriptPubKey)
|
||||
|
||||
// Treat non P2SH transactions as normal.
|
||||
if !(bip16 && isScriptHash(pops)) {
|
||||
return getSigOpCount(pops, true)
|
||||
}
|
||||
|
||||
// The public key script is a pay-to-script-hash, so parse the signature
|
||||
// script to get the final item. Scripts that fail to fully parse count
|
||||
// as 0 signature operations.
|
||||
sigPops, err := parseScript(scriptSig)
|
||||
if err != nil {
|
||||
return 0
|
||||
}
|
||||
|
||||
// The signature script must only push data to the stack for P2SH to be
|
||||
// a valid pair, so the signature operation count is 0 when that is not
|
||||
// the case.
|
||||
if !isPushOnly(sigPops) || len(sigPops) == 0 {
|
||||
return 0
|
||||
}
|
||||
|
||||
// The P2SH script is the last item the signature script pushes to the
|
||||
// stack. When the script is empty, there are no signature operations.
|
||||
shScript := sigPops[len(sigPops)-1].data
|
||||
if len(shScript) == 0 {
|
||||
return 0
|
||||
}
|
||||
|
||||
// Parse the P2SH script and don't check the error since parseScript
|
||||
// returns the parsed-up-to-error list of pops and the consensus rules
|
||||
// dictate signature operations are counted up to the first parse
|
||||
// failure.
|
||||
shPops, _ := parseScript(shScript)
|
||||
return getSigOpCount(shPops, true)
|
||||
}
|
||||
|
||||
// GetWitnessSigOpCount returns the number of signature operations generated by
|
||||
// spending the passed pkScript with the specified witness, or sigScript.
|
||||
// Unlike GetPreciseSigOpCount, this function is able to accurately count the
|
||||
// number of signature operations generated by spending witness programs, and
|
||||
// nested p2sh witness programs. If the script fails to parse, then the count
|
||||
// up to the point of failure is returned.
|
||||
func GetWitnessSigOpCount(sigScript, pkScript []byte, witness wire.TxWitness) int {
|
||||
// If this is a regular witness program, then we can proceed directly
|
||||
// to counting its signature operations without any further processing.
|
||||
if IsWitnessProgram(pkScript) {
|
||||
return getWitnessSigOps(pkScript, witness)
|
||||
}
|
||||
|
||||
// Next, we'll check the sigScript to see if this is a nested p2sh
|
||||
// witness program. This is a case wherein the sigScript is actually a
|
||||
// datapush of a p2wsh witness program.
|
||||
sigPops, err := parseScript(sigScript)
|
||||
if err != nil {
|
||||
return 0
|
||||
}
|
||||
if IsPayToScriptHash(pkScript) && isPushOnly(sigPops) &&
|
||||
IsWitnessProgram(sigScript[1:]) {
|
||||
return getWitnessSigOps(sigScript[1:], witness)
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
// getWitnessSigOps returns the number of signature operations generated by
|
||||
// spending the passed witness program wit the passed witness. The exact
|
||||
// signature counting heuristic is modified by the version of the passed
|
||||
// witness program. If the version of the witness program is unable to be
|
||||
// extracted, then 0 is returned for the sig op count.
|
||||
func getWitnessSigOps(pkScript []byte, witness wire.TxWitness) int {
|
||||
// Attempt to extract the witness program version.
|
||||
witnessVersion, witnessProgram, err := ExtractWitnessProgramInfo(
|
||||
pkScript,
|
||||
)
|
||||
if err != nil {
|
||||
return 0
|
||||
}
|
||||
|
||||
switch witnessVersion {
|
||||
case 0:
|
||||
switch {
|
||||
case len(witnessProgram) == payToWitnessPubKeyHashDataSize:
|
||||
return 1
|
||||
case len(witnessProgram) == payToWitnessScriptHashDataSize &&
|
||||
len(witness) > 0:
|
||||
|
||||
witnessScript := witness[len(witness)-1]
|
||||
pops, _ := parseScript(witnessScript)
|
||||
return getSigOpCount(pops, true)
|
||||
}
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
// IsUnspendable returns whether the passed public key script is unspendable, or
|
||||
// guaranteed to fail at execution. This allows inputs to be pruned instantly
|
||||
// when entering the UTXO set.
|
||||
func IsUnspendable(pkScript []byte) bool {
|
||||
pops, err := parseScript(pkScript)
|
||||
if err != nil {
|
||||
return true
|
||||
}
|
||||
|
||||
return len(pops) > 0 && pops[0].opcode.value == OP_RETURN
|
||||
}
|
||||
+4314
File diff suppressed because it is too large
Load Diff
+274
@@ -0,0 +1,274 @@
|
||||
// Copyright (c) 2013-2015 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
const (
|
||||
// defaultScriptAlloc is the default size used for the backing array
|
||||
// for a script being built by the ScriptBuilder. The array will
|
||||
// dynamically grow as needed, but this figure is intended to provide
|
||||
// enough space for vast majority of scripts without needing to grow the
|
||||
// backing array multiple times.
|
||||
defaultScriptAlloc = 500
|
||||
)
|
||||
|
||||
// ErrScriptNotCanonical identifies a non-canonical script. The caller can use
|
||||
// a type assertion to detect this error type.
|
||||
type ErrScriptNotCanonical string
|
||||
|
||||
// Error implements the error interface.
|
||||
func (e ErrScriptNotCanonical) Error() string {
|
||||
return string(e)
|
||||
}
|
||||
|
||||
// ScriptBuilder provides a facility for building custom scripts. It allows
|
||||
// you to push opcodes, ints, and data while respecting canonical encoding. In
|
||||
// general it does not ensure the script will execute correctly, however any
|
||||
// data pushes which would exceed the maximum allowed script engine limits and
|
||||
// are therefore guaranteed not to execute will not be pushed and will result in
|
||||
// the Script function returning an error.
|
||||
//
|
||||
// For example, the following would build a 2-of-3 multisig script for usage in
|
||||
// a pay-to-script-hash (although in this situation MultiSigScript() would be a
|
||||
// better choice to generate the script):
|
||||
// builder := txscript.NewScriptBuilder()
|
||||
// builder.AddOp(txscript.OP_2).AddData(pubKey1).AddData(pubKey2)
|
||||
// builder.AddData(pubKey3).AddOp(txscript.OP_3)
|
||||
// builder.AddOp(txscript.OP_CHECKMULTISIG)
|
||||
// script, err := builder.Script()
|
||||
// if err != nil {
|
||||
// // Handle the error.
|
||||
// return
|
||||
// }
|
||||
// fmt.Printf("Final multi-sig script: %x\n", script)
|
||||
type ScriptBuilder struct {
|
||||
script []byte
|
||||
err error
|
||||
}
|
||||
|
||||
// AddOp pushes the passed opcode to the end of the script. The script will not
|
||||
// be modified if pushing the opcode would cause the script to exceed the
|
||||
// maximum allowed script engine size.
|
||||
func (b *ScriptBuilder) AddOp(opcode byte) *ScriptBuilder {
|
||||
if b.err != nil {
|
||||
return b
|
||||
}
|
||||
|
||||
// Pushes that would cause the script to exceed the largest allowed
|
||||
// script size would result in a non-canonical script.
|
||||
if len(b.script)+1 > MaxScriptSize {
|
||||
str := fmt.Sprintf("adding an opcode would exceed the maximum "+
|
||||
"allowed canonical script length of %d", MaxScriptSize)
|
||||
b.err = ErrScriptNotCanonical(str)
|
||||
return b
|
||||
}
|
||||
|
||||
b.script = append(b.script, opcode)
|
||||
return b
|
||||
}
|
||||
|
||||
// AddOps pushes the passed opcodes to the end of the script. The script will
|
||||
// not be modified if pushing the opcodes would cause the script to exceed the
|
||||
// maximum allowed script engine size.
|
||||
func (b *ScriptBuilder) AddOps(opcodes []byte) *ScriptBuilder {
|
||||
if b.err != nil {
|
||||
return b
|
||||
}
|
||||
|
||||
// Pushes that would cause the script to exceed the largest allowed
|
||||
// script size would result in a non-canonical script.
|
||||
if len(b.script)+len(opcodes) > MaxScriptSize {
|
||||
str := fmt.Sprintf("adding opcodes would exceed the maximum "+
|
||||
"allowed canonical script length of %d", MaxScriptSize)
|
||||
b.err = ErrScriptNotCanonical(str)
|
||||
return b
|
||||
}
|
||||
|
||||
b.script = append(b.script, opcodes...)
|
||||
return b
|
||||
}
|
||||
|
||||
// canonicalDataSize returns the number of bytes the canonical encoding of the
|
||||
// data will take.
|
||||
func canonicalDataSize(data []byte) int {
|
||||
dataLen := len(data)
|
||||
|
||||
// When the data consists of a single number that can be represented
|
||||
// by one of the "small integer" opcodes, that opcode will be instead
|
||||
// of a data push opcode followed by the number.
|
||||
if dataLen == 0 {
|
||||
return 1
|
||||
} else if dataLen == 1 && data[0] <= 16 {
|
||||
return 1
|
||||
} else if dataLen == 1 && data[0] == 0x81 {
|
||||
return 1
|
||||
}
|
||||
|
||||
if dataLen < OP_PUSHDATA1 {
|
||||
return 1 + dataLen
|
||||
} else if dataLen <= 0xff {
|
||||
return 2 + dataLen
|
||||
} else if dataLen <= 0xffff {
|
||||
return 3 + dataLen
|
||||
}
|
||||
|
||||
return 5 + dataLen
|
||||
}
|
||||
|
||||
// addData is the internal function that actually pushes the passed data to the
|
||||
// end of the script. It automatically chooses canonical opcodes depending on
|
||||
// the length of the data. A zero length buffer will lead to a push of empty
|
||||
// data onto the stack (OP_0). No data limits are enforced with this function.
|
||||
func (b *ScriptBuilder) addData(data []byte) *ScriptBuilder {
|
||||
dataLen := len(data)
|
||||
|
||||
// When the data consists of a single number that can be represented
|
||||
// by one of the "small integer" opcodes, use that opcode instead of
|
||||
// a data push opcode followed by the number.
|
||||
if dataLen == 0 || dataLen == 1 && data[0] == 0 {
|
||||
b.script = append(b.script, OP_0)
|
||||
return b
|
||||
} else if dataLen == 1 && data[0] <= 16 {
|
||||
b.script = append(b.script, (OP_1-1)+data[0])
|
||||
return b
|
||||
} else if dataLen == 1 && data[0] == 0x81 {
|
||||
b.script = append(b.script, byte(OP_1NEGATE))
|
||||
return b
|
||||
}
|
||||
|
||||
// Use one of the OP_DATA_# opcodes if the length of the data is small
|
||||
// enough so the data push instruction is only a single byte.
|
||||
// Otherwise, choose the smallest possible OP_PUSHDATA# opcode that
|
||||
// can represent the length of the data.
|
||||
if dataLen < OP_PUSHDATA1 {
|
||||
b.script = append(b.script, byte((OP_DATA_1-1)+dataLen))
|
||||
} else if dataLen <= 0xff {
|
||||
b.script = append(b.script, OP_PUSHDATA1, byte(dataLen))
|
||||
} else if dataLen <= 0xffff {
|
||||
buf := make([]byte, 2)
|
||||
binary.LittleEndian.PutUint16(buf, uint16(dataLen))
|
||||
b.script = append(b.script, OP_PUSHDATA2)
|
||||
b.script = append(b.script, buf...)
|
||||
} else {
|
||||
buf := make([]byte, 4)
|
||||
binary.LittleEndian.PutUint32(buf, uint32(dataLen))
|
||||
b.script = append(b.script, OP_PUSHDATA4)
|
||||
b.script = append(b.script, buf...)
|
||||
}
|
||||
|
||||
// Append the actual data.
|
||||
b.script = append(b.script, data...)
|
||||
|
||||
return b
|
||||
}
|
||||
|
||||
// AddFullData should not typically be used by ordinary users as it does not
|
||||
// include the checks which prevent data pushes larger than the maximum allowed
|
||||
// sizes which leads to scripts that can't be executed. This is provided for
|
||||
// testing purposes such as regression tests where sizes are intentionally made
|
||||
// larger than allowed.
|
||||
//
|
||||
// Use AddData instead.
|
||||
func (b *ScriptBuilder) AddFullData(data []byte) *ScriptBuilder {
|
||||
if b.err != nil {
|
||||
return b
|
||||
}
|
||||
|
||||
return b.addData(data)
|
||||
}
|
||||
|
||||
// AddData pushes the passed data to the end of the script. It automatically
|
||||
// chooses canonical opcodes depending on the length of the data. A zero length
|
||||
// buffer will lead to a push of empty data onto the stack (OP_0) and any push
|
||||
// of data greater than MaxScriptElementSize will not modify the script since
|
||||
// that is not allowed by the script engine. Also, the script will not be
|
||||
// modified if pushing the data would cause the script to exceed the maximum
|
||||
// allowed script engine size.
|
||||
func (b *ScriptBuilder) AddData(data []byte) *ScriptBuilder {
|
||||
if b.err != nil {
|
||||
return b
|
||||
}
|
||||
|
||||
// Pushes that would cause the script to exceed the largest allowed
|
||||
// script size would result in a non-canonical script.
|
||||
dataSize := canonicalDataSize(data)
|
||||
if len(b.script)+dataSize > MaxScriptSize {
|
||||
str := fmt.Sprintf("adding %d bytes of data would exceed the "+
|
||||
"maximum allowed canonical script length of %d",
|
||||
dataSize, MaxScriptSize)
|
||||
b.err = ErrScriptNotCanonical(str)
|
||||
return b
|
||||
}
|
||||
|
||||
// Pushes larger than the max script element size would result in a
|
||||
// script that is not canonical.
|
||||
dataLen := len(data)
|
||||
if dataLen > MaxScriptElementSize {
|
||||
str := fmt.Sprintf("adding a data element of %d bytes would "+
|
||||
"exceed the maximum allowed script element size of %d",
|
||||
dataLen, MaxScriptElementSize)
|
||||
b.err = ErrScriptNotCanonical(str)
|
||||
return b
|
||||
}
|
||||
|
||||
return b.addData(data)
|
||||
}
|
||||
|
||||
// AddInt64 pushes the passed integer to the end of the script. The script will
|
||||
// not be modified if pushing the data would cause the script to exceed the
|
||||
// maximum allowed script engine size.
|
||||
func (b *ScriptBuilder) AddInt64(val int64) *ScriptBuilder {
|
||||
if b.err != nil {
|
||||
return b
|
||||
}
|
||||
|
||||
// Pushes that would cause the script to exceed the largest allowed
|
||||
// script size would result in a non-canonical script.
|
||||
if len(b.script)+1 > MaxScriptSize {
|
||||
str := fmt.Sprintf("adding an integer would exceed the "+
|
||||
"maximum allow canonical script length of %d",
|
||||
MaxScriptSize)
|
||||
b.err = ErrScriptNotCanonical(str)
|
||||
return b
|
||||
}
|
||||
|
||||
// Fast path for small integers and OP_1NEGATE.
|
||||
if val == 0 {
|
||||
b.script = append(b.script, OP_0)
|
||||
return b
|
||||
}
|
||||
if val == -1 || (val >= 1 && val <= 16) {
|
||||
b.script = append(b.script, byte((OP_1-1)+val))
|
||||
return b
|
||||
}
|
||||
|
||||
return b.AddData(scriptNum(val).Bytes())
|
||||
}
|
||||
|
||||
// Reset resets the script so it has no content.
|
||||
func (b *ScriptBuilder) Reset() *ScriptBuilder {
|
||||
b.script = b.script[0:0]
|
||||
b.err = nil
|
||||
return b
|
||||
}
|
||||
|
||||
// Script returns the currently built script. When any errors occurred while
|
||||
// building the script, the script will be returned up the point of the first
|
||||
// error along with the error.
|
||||
func (b *ScriptBuilder) Script() ([]byte, error) {
|
||||
return b.script, b.err
|
||||
}
|
||||
|
||||
// NewScriptBuilder returns a new instance of a script builder. See
|
||||
// ScriptBuilder for details.
|
||||
func NewScriptBuilder() *ScriptBuilder {
|
||||
return &ScriptBuilder{
|
||||
script: make([]byte, 0, defaultScriptAlloc),
|
||||
}
|
||||
}
|
||||
+411
@@ -0,0 +1,411 @@
|
||||
// Copyright (c) 2013-2016 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// TestScriptBuilderAddOp tests that pushing opcodes to a script via the
|
||||
// ScriptBuilder API works as expected.
|
||||
func TestScriptBuilderAddOp(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
opcodes []byte
|
||||
expected []byte
|
||||
}{
|
||||
{
|
||||
name: "push OP_0",
|
||||
opcodes: []byte{OP_0},
|
||||
expected: []byte{OP_0},
|
||||
},
|
||||
{
|
||||
name: "push OP_1 OP_2",
|
||||
opcodes: []byte{OP_1, OP_2},
|
||||
expected: []byte{OP_1, OP_2},
|
||||
},
|
||||
{
|
||||
name: "push OP_HASH160 OP_EQUAL",
|
||||
opcodes: []byte{OP_HASH160, OP_EQUAL},
|
||||
expected: []byte{OP_HASH160, OP_EQUAL},
|
||||
},
|
||||
}
|
||||
|
||||
// Run tests and individually add each op via AddOp.
|
||||
builder := NewScriptBuilder()
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
builder.Reset()
|
||||
for _, opcode := range test.opcodes {
|
||||
builder.AddOp(opcode)
|
||||
}
|
||||
result, err := builder.Script()
|
||||
if err != nil {
|
||||
t.Errorf("ScriptBuilder.AddOp #%d (%s) unexpected "+
|
||||
"error: %v", i, test.name, err)
|
||||
continue
|
||||
}
|
||||
if !bytes.Equal(result, test.expected) {
|
||||
t.Errorf("ScriptBuilder.AddOp #%d (%s) wrong result\n"+
|
||||
"got: %x\nwant: %x", i, test.name, result,
|
||||
test.expected)
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
// Run tests and bulk add ops via AddOps.
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
builder.Reset()
|
||||
result, err := builder.AddOps(test.opcodes).Script()
|
||||
if err != nil {
|
||||
t.Errorf("ScriptBuilder.AddOps #%d (%s) unexpected "+
|
||||
"error: %v", i, test.name, err)
|
||||
continue
|
||||
}
|
||||
if !bytes.Equal(result, test.expected) {
|
||||
t.Errorf("ScriptBuilder.AddOps #%d (%s) wrong result\n"+
|
||||
"got: %x\nwant: %x", i, test.name, result,
|
||||
test.expected)
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// TestScriptBuilderAddInt64 tests that pushing signed integers to a script via
|
||||
// the ScriptBuilder API works as expected.
|
||||
func TestScriptBuilderAddInt64(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
val int64
|
||||
expected []byte
|
||||
}{
|
||||
{name: "push -1", val: -1, expected: []byte{OP_1NEGATE}},
|
||||
{name: "push small int 0", val: 0, expected: []byte{OP_0}},
|
||||
{name: "push small int 1", val: 1, expected: []byte{OP_1}},
|
||||
{name: "push small int 2", val: 2, expected: []byte{OP_2}},
|
||||
{name: "push small int 3", val: 3, expected: []byte{OP_3}},
|
||||
{name: "push small int 4", val: 4, expected: []byte{OP_4}},
|
||||
{name: "push small int 5", val: 5, expected: []byte{OP_5}},
|
||||
{name: "push small int 6", val: 6, expected: []byte{OP_6}},
|
||||
{name: "push small int 7", val: 7, expected: []byte{OP_7}},
|
||||
{name: "push small int 8", val: 8, expected: []byte{OP_8}},
|
||||
{name: "push small int 9", val: 9, expected: []byte{OP_9}},
|
||||
{name: "push small int 10", val: 10, expected: []byte{OP_10}},
|
||||
{name: "push small int 11", val: 11, expected: []byte{OP_11}},
|
||||
{name: "push small int 12", val: 12, expected: []byte{OP_12}},
|
||||
{name: "push small int 13", val: 13, expected: []byte{OP_13}},
|
||||
{name: "push small int 14", val: 14, expected: []byte{OP_14}},
|
||||
{name: "push small int 15", val: 15, expected: []byte{OP_15}},
|
||||
{name: "push small int 16", val: 16, expected: []byte{OP_16}},
|
||||
{name: "push 17", val: 17, expected: []byte{OP_DATA_1, 0x11}},
|
||||
{name: "push 65", val: 65, expected: []byte{OP_DATA_1, 0x41}},
|
||||
{name: "push 127", val: 127, expected: []byte{OP_DATA_1, 0x7f}},
|
||||
{name: "push 128", val: 128, expected: []byte{OP_DATA_2, 0x80, 0}},
|
||||
{name: "push 255", val: 255, expected: []byte{OP_DATA_2, 0xff, 0}},
|
||||
{name: "push 256", val: 256, expected: []byte{OP_DATA_2, 0, 0x01}},
|
||||
{name: "push 32767", val: 32767, expected: []byte{OP_DATA_2, 0xff, 0x7f}},
|
||||
{name: "push 32768", val: 32768, expected: []byte{OP_DATA_3, 0, 0x80, 0}},
|
||||
{name: "push -2", val: -2, expected: []byte{OP_DATA_1, 0x82}},
|
||||
{name: "push -3", val: -3, expected: []byte{OP_DATA_1, 0x83}},
|
||||
{name: "push -4", val: -4, expected: []byte{OP_DATA_1, 0x84}},
|
||||
{name: "push -5", val: -5, expected: []byte{OP_DATA_1, 0x85}},
|
||||
{name: "push -17", val: -17, expected: []byte{OP_DATA_1, 0x91}},
|
||||
{name: "push -65", val: -65, expected: []byte{OP_DATA_1, 0xc1}},
|
||||
{name: "push -127", val: -127, expected: []byte{OP_DATA_1, 0xff}},
|
||||
{name: "push -128", val: -128, expected: []byte{OP_DATA_2, 0x80, 0x80}},
|
||||
{name: "push -255", val: -255, expected: []byte{OP_DATA_2, 0xff, 0x80}},
|
||||
{name: "push -256", val: -256, expected: []byte{OP_DATA_2, 0x00, 0x81}},
|
||||
{name: "push -32767", val: -32767, expected: []byte{OP_DATA_2, 0xff, 0xff}},
|
||||
{name: "push -32768", val: -32768, expected: []byte{OP_DATA_3, 0x00, 0x80, 0x80}},
|
||||
}
|
||||
|
||||
builder := NewScriptBuilder()
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
builder.Reset().AddInt64(test.val)
|
||||
result, err := builder.Script()
|
||||
if err != nil {
|
||||
t.Errorf("ScriptBuilder.AddInt64 #%d (%s) unexpected "+
|
||||
"error: %v", i, test.name, err)
|
||||
continue
|
||||
}
|
||||
if !bytes.Equal(result, test.expected) {
|
||||
t.Errorf("ScriptBuilder.AddInt64 #%d (%s) wrong result\n"+
|
||||
"got: %x\nwant: %x", i, test.name, result,
|
||||
test.expected)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestScriptBuilderAddData tests that pushing data to a script via the
|
||||
// ScriptBuilder API works as expected and conforms to BIP0062.
|
||||
func TestScriptBuilderAddData(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
data []byte
|
||||
expected []byte
|
||||
useFull bool // use AddFullData instead of AddData.
|
||||
}{
|
||||
// BIP0062: Pushing an empty byte sequence must use OP_0.
|
||||
{name: "push empty byte sequence", data: nil, expected: []byte{OP_0}},
|
||||
{name: "push 1 byte 0x00", data: []byte{0x00}, expected: []byte{OP_0}},
|
||||
|
||||
// BIP0062: Pushing a 1-byte sequence of byte 0x01 through 0x10 must use OP_n.
|
||||
{name: "push 1 byte 0x01", data: []byte{0x01}, expected: []byte{OP_1}},
|
||||
{name: "push 1 byte 0x02", data: []byte{0x02}, expected: []byte{OP_2}},
|
||||
{name: "push 1 byte 0x03", data: []byte{0x03}, expected: []byte{OP_3}},
|
||||
{name: "push 1 byte 0x04", data: []byte{0x04}, expected: []byte{OP_4}},
|
||||
{name: "push 1 byte 0x05", data: []byte{0x05}, expected: []byte{OP_5}},
|
||||
{name: "push 1 byte 0x06", data: []byte{0x06}, expected: []byte{OP_6}},
|
||||
{name: "push 1 byte 0x07", data: []byte{0x07}, expected: []byte{OP_7}},
|
||||
{name: "push 1 byte 0x08", data: []byte{0x08}, expected: []byte{OP_8}},
|
||||
{name: "push 1 byte 0x09", data: []byte{0x09}, expected: []byte{OP_9}},
|
||||
{name: "push 1 byte 0x0a", data: []byte{0x0a}, expected: []byte{OP_10}},
|
||||
{name: "push 1 byte 0x0b", data: []byte{0x0b}, expected: []byte{OP_11}},
|
||||
{name: "push 1 byte 0x0c", data: []byte{0x0c}, expected: []byte{OP_12}},
|
||||
{name: "push 1 byte 0x0d", data: []byte{0x0d}, expected: []byte{OP_13}},
|
||||
{name: "push 1 byte 0x0e", data: []byte{0x0e}, expected: []byte{OP_14}},
|
||||
{name: "push 1 byte 0x0f", data: []byte{0x0f}, expected: []byte{OP_15}},
|
||||
{name: "push 1 byte 0x10", data: []byte{0x10}, expected: []byte{OP_16}},
|
||||
|
||||
// BIP0062: Pushing the byte 0x81 must use OP_1NEGATE.
|
||||
{name: "push 1 byte 0x81", data: []byte{0x81}, expected: []byte{OP_1NEGATE}},
|
||||
|
||||
// BIP0062: Pushing any other byte sequence up to 75 bytes must
|
||||
// use the normal data push (opcode byte n, with n the number of
|
||||
// bytes, followed n bytes of data being pushed).
|
||||
{name: "push 1 byte 0x11", data: []byte{0x11}, expected: []byte{OP_DATA_1, 0x11}},
|
||||
{name: "push 1 byte 0x80", data: []byte{0x80}, expected: []byte{OP_DATA_1, 0x80}},
|
||||
{name: "push 1 byte 0x82", data: []byte{0x82}, expected: []byte{OP_DATA_1, 0x82}},
|
||||
{name: "push 1 byte 0xff", data: []byte{0xff}, expected: []byte{OP_DATA_1, 0xff}},
|
||||
{
|
||||
name: "push data len 17",
|
||||
data: bytes.Repeat([]byte{0x49}, 17),
|
||||
expected: append([]byte{OP_DATA_17}, bytes.Repeat([]byte{0x49}, 17)...),
|
||||
},
|
||||
{
|
||||
name: "push data len 75",
|
||||
data: bytes.Repeat([]byte{0x49}, 75),
|
||||
expected: append([]byte{OP_DATA_75}, bytes.Repeat([]byte{0x49}, 75)...),
|
||||
},
|
||||
|
||||
// BIP0062: Pushing 76 to 255 bytes must use OP_PUSHDATA1.
|
||||
{
|
||||
name: "push data len 76",
|
||||
data: bytes.Repeat([]byte{0x49}, 76),
|
||||
expected: append([]byte{OP_PUSHDATA1, 76}, bytes.Repeat([]byte{0x49}, 76)...),
|
||||
},
|
||||
{
|
||||
name: "push data len 255",
|
||||
data: bytes.Repeat([]byte{0x49}, 255),
|
||||
expected: append([]byte{OP_PUSHDATA1, 255}, bytes.Repeat([]byte{0x49}, 255)...),
|
||||
},
|
||||
|
||||
// BIP0062: Pushing 256 to 520 bytes must use OP_PUSHDATA2.
|
||||
{
|
||||
name: "push data len 256",
|
||||
data: bytes.Repeat([]byte{0x49}, 256),
|
||||
expected: append([]byte{OP_PUSHDATA2, 0, 1}, bytes.Repeat([]byte{0x49}, 256)...),
|
||||
},
|
||||
{
|
||||
name: "push data len 520",
|
||||
data: bytes.Repeat([]byte{0x49}, 520),
|
||||
expected: append([]byte{OP_PUSHDATA2, 0x08, 0x02}, bytes.Repeat([]byte{0x49}, 520)...),
|
||||
},
|
||||
|
||||
// BIP0062: OP_PUSHDATA4 can never be used, as pushes over 520
|
||||
// bytes are not allowed, and those below can be done using
|
||||
// other operators.
|
||||
{
|
||||
name: "push data len 521",
|
||||
data: bytes.Repeat([]byte{0x49}, 521),
|
||||
expected: nil,
|
||||
},
|
||||
{
|
||||
name: "push data len 32767 (canonical)",
|
||||
data: bytes.Repeat([]byte{0x49}, 32767),
|
||||
expected: nil,
|
||||
},
|
||||
{
|
||||
name: "push data len 65536 (canonical)",
|
||||
data: bytes.Repeat([]byte{0x49}, 65536),
|
||||
expected: nil,
|
||||
},
|
||||
|
||||
// Additional tests for the PushFullData function that
|
||||
// intentionally allows data pushes to exceed the limit for
|
||||
// regression testing purposes.
|
||||
|
||||
// 3-byte data push via OP_PUSHDATA_2.
|
||||
{
|
||||
name: "push data len 32767 (non-canonical)",
|
||||
data: bytes.Repeat([]byte{0x49}, 32767),
|
||||
expected: append([]byte{OP_PUSHDATA2, 255, 127}, bytes.Repeat([]byte{0x49}, 32767)...),
|
||||
useFull: true,
|
||||
},
|
||||
|
||||
// 5-byte data push via OP_PUSHDATA_4.
|
||||
{
|
||||
name: "push data len 65536 (non-canonical)",
|
||||
data: bytes.Repeat([]byte{0x49}, 65536),
|
||||
expected: append([]byte{OP_PUSHDATA4, 0, 0, 1, 0}, bytes.Repeat([]byte{0x49}, 65536)...),
|
||||
useFull: true,
|
||||
},
|
||||
}
|
||||
|
||||
builder := NewScriptBuilder()
|
||||
t.Logf("Running %d tests", len(tests))
|
||||
for i, test := range tests {
|
||||
if !test.useFull {
|
||||
builder.Reset().AddData(test.data)
|
||||
} else {
|
||||
builder.Reset().AddFullData(test.data)
|
||||
}
|
||||
result, _ := builder.Script()
|
||||
if !bytes.Equal(result, test.expected) {
|
||||
t.Errorf("ScriptBuilder.AddData #%d (%s) wrong result\n"+
|
||||
"got: %x\nwant: %x", i, test.name, result,
|
||||
test.expected)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestExceedMaxScriptSize ensures that all of the functions that can be used
|
||||
// to add data to a script don't allow the script to exceed the max allowed
|
||||
// size.
|
||||
func TestExceedMaxScriptSize(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// Start off by constructing a max size script.
|
||||
builder := NewScriptBuilder()
|
||||
builder.Reset().AddFullData(make([]byte, MaxScriptSize-3))
|
||||
origScript, err := builder.Script()
|
||||
if err != nil {
|
||||
t.Fatalf("Unexpected error for max size script: %v", err)
|
||||
}
|
||||
|
||||
// Ensure adding data that would exceed the maximum size of the script
|
||||
// does not add the data.
|
||||
script, err := builder.AddData([]byte{0x00}).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatalf("ScriptBuilder.AddData allowed exceeding max script "+
|
||||
"size: %v", len(script))
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddData unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding an opcode that would exceed the maximum size of the
|
||||
// script does not add the data.
|
||||
builder.Reset().AddFullData(make([]byte, MaxScriptSize-3))
|
||||
script, err = builder.AddOp(OP_0).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatalf("ScriptBuilder.AddOp unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddOp unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding an integer that would exceed the maximum size of the
|
||||
// script does not add the data.
|
||||
builder.Reset().AddFullData(make([]byte, MaxScriptSize-3))
|
||||
script, err = builder.AddInt64(0).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatalf("ScriptBuilder.AddInt64 unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddInt64 unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
}
|
||||
|
||||
// TestErroredScript ensures that all of the functions that can be used to add
|
||||
// data to a script don't modify the script once an error has happened.
|
||||
func TestErroredScript(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// Start off by constructing a near max size script that has enough
|
||||
// space left to add each data type without an error and force an
|
||||
// initial error condition.
|
||||
builder := NewScriptBuilder()
|
||||
builder.Reset().AddFullData(make([]byte, MaxScriptSize-8))
|
||||
origScript, err := builder.Script()
|
||||
if err != nil {
|
||||
t.Fatalf("ScriptBuilder.AddFullData unexpected error: %v", err)
|
||||
}
|
||||
script, err := builder.AddData([]byte{0x00, 0x00, 0x00, 0x00, 0x00}).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatalf("ScriptBuilder.AddData allowed exceeding max script "+
|
||||
"size: %v", len(script))
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddData unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding data, even using the non-canonical path, to a script
|
||||
// that has errored doesn't succeed.
|
||||
script, err = builder.AddFullData([]byte{0x00}).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatal("ScriptBuilder.AddFullData succeeded on errored script")
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddFullData unexpected modified "+
|
||||
"script - got len %d, want len %d", len(script),
|
||||
len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding data to a script that has errored doesn't succeed.
|
||||
script, err = builder.AddData([]byte{0x00}).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatal("ScriptBuilder.AddData succeeded on errored script")
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddData unexpected modified "+
|
||||
"script - got len %d, want len %d", len(script),
|
||||
len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding an opcode to a script that has errored doesn't succeed.
|
||||
script, err = builder.AddOp(OP_0).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatal("ScriptBuilder.AddOp succeeded on errored script")
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddOp unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
|
||||
// Ensure adding an integer to a script that has errored doesn't
|
||||
// succeed.
|
||||
script, err = builder.AddInt64(0).Script()
|
||||
if _, ok := err.(ErrScriptNotCanonical); !ok || err == nil {
|
||||
t.Fatal("ScriptBuilder.AddInt64 succeeded on errored script")
|
||||
}
|
||||
if !bytes.Equal(script, origScript) {
|
||||
t.Fatalf("ScriptBuilder.AddInt64 unexpected modified script - "+
|
||||
"got len %d, want len %d", len(script), len(origScript))
|
||||
}
|
||||
|
||||
// Ensure the error has a message set.
|
||||
if err.Error() == "" {
|
||||
t.Fatal("ErrScriptNotCanonical.Error does not have any text")
|
||||
}
|
||||
}
|
||||
+225
@@ -0,0 +1,225 @@
|
||||
// Copyright (c) 2015-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
)
|
||||
|
||||
const (
|
||||
maxInt32 = 1<<31 - 1
|
||||
minInt32 = -1 << 31
|
||||
|
||||
// defaultScriptNumLen is the default number of bytes
|
||||
// data being interpreted as an integer may be.
|
||||
defaultScriptNumLen = 4
|
||||
)
|
||||
|
||||
// scriptNum represents a numeric value used in the scripting engine with
|
||||
// special handling to deal with the subtle semantics required by consensus.
|
||||
//
|
||||
// All numbers are stored on the data and alternate stacks encoded as little
|
||||
// endian with a sign bit. All numeric opcodes such as OP_ADD, OP_SUB,
|
||||
// and OP_MUL, are only allowed to operate on 4-byte integers in the range
|
||||
// [-2^31 + 1, 2^31 - 1], however the results of numeric operations may overflow
|
||||
// and remain valid so long as they are not used as inputs to other numeric
|
||||
// operations or otherwise interpreted as an integer.
|
||||
//
|
||||
// For example, it is possible for OP_ADD to have 2^31 - 1 for its two operands
|
||||
// resulting 2^32 - 2, which overflows, but is still pushed to the stack as the
|
||||
// result of the addition. That value can then be used as input to OP_VERIFY
|
||||
// which will succeed because the data is being interpreted as a boolean.
|
||||
// However, if that same value were to be used as input to another numeric
|
||||
// opcode, such as OP_SUB, it must fail.
|
||||
//
|
||||
// This type handles the aforementioned requirements by storing all numeric
|
||||
// operation results as an int64 to handle overflow and provides the Bytes
|
||||
// method to get the serialized representation (including values that overflow).
|
||||
//
|
||||
// Then, whenever data is interpreted as an integer, it is converted to this
|
||||
// type by using the makeScriptNum function which will return an error if the
|
||||
// number is out of range or not minimally encoded depending on parameters.
|
||||
// Since all numeric opcodes involve pulling data from the stack and
|
||||
// interpreting it as an integer, it provides the required behavior.
|
||||
type scriptNum int64
|
||||
|
||||
// checkMinimalDataEncoding returns whether or not the passed byte array adheres
|
||||
// to the minimal encoding requirements.
|
||||
func checkMinimalDataEncoding(v []byte) error {
|
||||
if len(v) == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Check that the number is encoded with the minimum possible
|
||||
// number of bytes.
|
||||
//
|
||||
// If the most-significant-byte - excluding the sign bit - is zero
|
||||
// then we're not minimal. Note how this test also rejects the
|
||||
// negative-zero encoding, [0x80].
|
||||
if v[len(v)-1]&0x7f == 0 {
|
||||
// One exception: if there's more than one byte and the most
|
||||
// significant bit of the second-most-significant-byte is set
|
||||
// it would conflict with the sign bit. An example of this case
|
||||
// is +-255, which encode to 0xff00 and 0xff80 respectively.
|
||||
// (big-endian).
|
||||
if len(v) == 1 || v[len(v)-2]&0x80 == 0 {
|
||||
str := fmt.Sprintf("numeric value encoded as %x is "+
|
||||
"not minimally encoded", v)
|
||||
return scriptError(ErrMinimalData, str)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Bytes returns the number serialized as a little endian with a sign bit.
|
||||
//
|
||||
// Example encodings:
|
||||
// 127 -> [0x7f]
|
||||
// -127 -> [0xff]
|
||||
// 128 -> [0x80 0x00]
|
||||
// -128 -> [0x80 0x80]
|
||||
// 129 -> [0x81 0x00]
|
||||
// -129 -> [0x81 0x80]
|
||||
// 256 -> [0x00 0x01]
|
||||
// -256 -> [0x00 0x81]
|
||||
// 32767 -> [0xff 0x7f]
|
||||
// -32767 -> [0xff 0xff]
|
||||
// 32768 -> [0x00 0x80 0x00]
|
||||
// -32768 -> [0x00 0x80 0x80]
|
||||
func (n scriptNum) Bytes() []byte {
|
||||
// Zero encodes as an empty byte slice.
|
||||
if n == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Take the absolute value and keep track of whether it was originally
|
||||
// negative.
|
||||
isNegative := n < 0
|
||||
if isNegative {
|
||||
n = -n
|
||||
}
|
||||
|
||||
// Encode to little endian. The maximum number of encoded bytes is 9
|
||||
// (8 bytes for max int64 plus a potential byte for sign extension).
|
||||
result := make([]byte, 0, 9)
|
||||
for n > 0 {
|
||||
result = append(result, byte(n&0xff))
|
||||
n >>= 8
|
||||
}
|
||||
|
||||
// When the most significant byte already has the high bit set, an
|
||||
// additional high byte is required to indicate whether the number is
|
||||
// negative or positive. The additional byte is removed when converting
|
||||
// back to an integral and its high bit is used to denote the sign.
|
||||
//
|
||||
// Otherwise, when the most significant byte does not already have the
|
||||
// high bit set, use it to indicate the value is negative, if needed.
|
||||
if result[len(result)-1]&0x80 != 0 {
|
||||
extraByte := byte(0x00)
|
||||
if isNegative {
|
||||
extraByte = 0x80
|
||||
}
|
||||
result = append(result, extraByte)
|
||||
|
||||
} else if isNegative {
|
||||
result[len(result)-1] |= 0x80
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
// Int32 returns the script number clamped to a valid int32. That is to say
|
||||
// when the script number is higher than the max allowed int32, the max int32
|
||||
// value is returned and vice versa for the minimum value. Note that this
|
||||
// behavior is different from a simple int32 cast because that truncates
|
||||
// and the consensus rules dictate numbers which are directly cast to ints
|
||||
// provide this behavior.
|
||||
//
|
||||
// In practice, for most opcodes, the number should never be out of range since
|
||||
// it will have been created with makeScriptNum using the defaultScriptLen
|
||||
// value, which rejects them. In case something in the future ends up calling
|
||||
// this function against the result of some arithmetic, which IS allowed to be
|
||||
// out of range before being reinterpreted as an integer, this will provide the
|
||||
// correct behavior.
|
||||
func (n scriptNum) Int32() int32 {
|
||||
if n > maxInt32 {
|
||||
return maxInt32
|
||||
}
|
||||
|
||||
if n < minInt32 {
|
||||
return minInt32
|
||||
}
|
||||
|
||||
return int32(n)
|
||||
}
|
||||
|
||||
// makeScriptNum interprets the passed serialized bytes as an encoded integer
|
||||
// and returns the result as a script number.
|
||||
//
|
||||
// Since the consensus rules dictate that serialized bytes interpreted as ints
|
||||
// are only allowed to be in the range determined by a maximum number of bytes,
|
||||
// on a per opcode basis, an error will be returned when the provided bytes
|
||||
// would result in a number outside of that range. In particular, the range for
|
||||
// the vast majority of opcodes dealing with numeric values are limited to 4
|
||||
// bytes and therefore will pass that value to this function resulting in an
|
||||
// allowed range of [-2^31 + 1, 2^31 - 1].
|
||||
//
|
||||
// The requireMinimal flag causes an error to be returned if additional checks
|
||||
// on the encoding determine it is not represented with the smallest possible
|
||||
// number of bytes or is the negative 0 encoding, [0x80]. For example, consider
|
||||
// the number 127. It could be encoded as [0x7f], [0x7f 0x00],
|
||||
// [0x7f 0x00 0x00 ...], etc. All forms except [0x7f] will return an error with
|
||||
// requireMinimal enabled.
|
||||
//
|
||||
// The scriptNumLen is the maximum number of bytes the encoded value can be
|
||||
// before an ErrStackNumberTooBig is returned. This effectively limits the
|
||||
// range of allowed values.
|
||||
// WARNING: Great care should be taken if passing a value larger than
|
||||
// defaultScriptNumLen, which could lead to addition and multiplication
|
||||
// overflows.
|
||||
//
|
||||
// See the Bytes function documentation for example encodings.
|
||||
func makeScriptNum(v []byte, requireMinimal bool, scriptNumLen int) (scriptNum, error) {
|
||||
// Interpreting data requires that it is not larger than
|
||||
// the the passed scriptNumLen value.
|
||||
if len(v) > scriptNumLen {
|
||||
str := fmt.Sprintf("numeric value encoded as %x is %d bytes "+
|
||||
"which exceeds the max allowed of %d", v, len(v),
|
||||
scriptNumLen)
|
||||
return 0, scriptError(ErrNumberTooBig, str)
|
||||
}
|
||||
|
||||
// Enforce minimal encoded if requested.
|
||||
if requireMinimal {
|
||||
if err := checkMinimalDataEncoding(v); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
// Zero is encoded as an empty byte slice.
|
||||
if len(v) == 0 {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
// Decode from little endian.
|
||||
var result int64
|
||||
for i, val := range v {
|
||||
result |= int64(val) << uint8(8*i)
|
||||
}
|
||||
|
||||
// When the most significant byte of the input bytes has the sign bit
|
||||
// set, the result is negative. So, remove the sign bit from the result
|
||||
// and make it negative.
|
||||
if v[len(v)-1]&0x80 != 0 {
|
||||
// The maximum length of v has already been determined to be 4
|
||||
// above, so uint8 is enough to cover the max possible shift
|
||||
// value of 24.
|
||||
result &= ^(int64(0x80) << uint8(8*(len(v)-1)))
|
||||
return scriptNum(-result), nil
|
||||
}
|
||||
|
||||
return scriptNum(result), nil
|
||||
}
|
||||
+273
@@ -0,0 +1,273 @@
|
||||
// Copyright (c) 2015-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/hex"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// hexToBytes converts the passed hex string into bytes and will panic if there
|
||||
// is an error. This is only provided for the hard-coded constants so errors in
|
||||
// the source code can be detected. It will only (and must only) be called with
|
||||
// hard-coded values.
|
||||
func hexToBytes(s string) []byte {
|
||||
b, err := hex.DecodeString(s)
|
||||
if err != nil {
|
||||
panic("invalid hex in source file: " + s)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
// TestScriptNumBytes ensures that converting from integral script numbers to
|
||||
// byte representations works as expected.
|
||||
func TestScriptNumBytes(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
num scriptNum
|
||||
serialized []byte
|
||||
}{
|
||||
{0, nil},
|
||||
{1, hexToBytes("01")},
|
||||
{-1, hexToBytes("81")},
|
||||
{127, hexToBytes("7f")},
|
||||
{-127, hexToBytes("ff")},
|
||||
{128, hexToBytes("8000")},
|
||||
{-128, hexToBytes("8080")},
|
||||
{129, hexToBytes("8100")},
|
||||
{-129, hexToBytes("8180")},
|
||||
{256, hexToBytes("0001")},
|
||||
{-256, hexToBytes("0081")},
|
||||
{32767, hexToBytes("ff7f")},
|
||||
{-32767, hexToBytes("ffff")},
|
||||
{32768, hexToBytes("008000")},
|
||||
{-32768, hexToBytes("008080")},
|
||||
{65535, hexToBytes("ffff00")},
|
||||
{-65535, hexToBytes("ffff80")},
|
||||
{524288, hexToBytes("000008")},
|
||||
{-524288, hexToBytes("000088")},
|
||||
{7340032, hexToBytes("000070")},
|
||||
{-7340032, hexToBytes("0000f0")},
|
||||
{8388608, hexToBytes("00008000")},
|
||||
{-8388608, hexToBytes("00008080")},
|
||||
{2147483647, hexToBytes("ffffff7f")},
|
||||
{-2147483647, hexToBytes("ffffffff")},
|
||||
|
||||
// Values that are out of range for data that is interpreted as
|
||||
// numbers, but are allowed as the result of numeric operations.
|
||||
{2147483648, hexToBytes("0000008000")},
|
||||
{-2147483648, hexToBytes("0000008080")},
|
||||
{2415919104, hexToBytes("0000009000")},
|
||||
{-2415919104, hexToBytes("0000009080")},
|
||||
{4294967295, hexToBytes("ffffffff00")},
|
||||
{-4294967295, hexToBytes("ffffffff80")},
|
||||
{4294967296, hexToBytes("0000000001")},
|
||||
{-4294967296, hexToBytes("0000000081")},
|
||||
{281474976710655, hexToBytes("ffffffffffff00")},
|
||||
{-281474976710655, hexToBytes("ffffffffffff80")},
|
||||
{72057594037927935, hexToBytes("ffffffffffffff00")},
|
||||
{-72057594037927935, hexToBytes("ffffffffffffff80")},
|
||||
{9223372036854775807, hexToBytes("ffffffffffffff7f")},
|
||||
{-9223372036854775807, hexToBytes("ffffffffffffffff")},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
gotBytes := test.num.Bytes()
|
||||
if !bytes.Equal(gotBytes, test.serialized) {
|
||||
t.Errorf("Bytes: did not get expected bytes for %d - "+
|
||||
"got %x, want %x", test.num, gotBytes,
|
||||
test.serialized)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestMakeScriptNum ensures that converting from byte representations to
|
||||
// integral script numbers works as expected.
|
||||
func TestMakeScriptNum(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// Errors used in the tests below defined here for convenience and to
|
||||
// keep the horizontal test size shorter.
|
||||
errNumTooBig := scriptError(ErrNumberTooBig, "")
|
||||
errMinimalData := scriptError(ErrMinimalData, "")
|
||||
|
||||
tests := []struct {
|
||||
serialized []byte
|
||||
num scriptNum
|
||||
numLen int
|
||||
minimalEncoding bool
|
||||
err error
|
||||
}{
|
||||
// Minimal encoding must reject negative 0.
|
||||
{hexToBytes("80"), 0, defaultScriptNumLen, true, errMinimalData},
|
||||
|
||||
// Minimally encoded valid values with minimal encoding flag.
|
||||
// Should not error and return expected integral number.
|
||||
{nil, 0, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("01"), 1, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("81"), -1, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("7f"), 127, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ff"), -127, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("8000"), 128, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("8080"), -128, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("8100"), 129, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("8180"), -129, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("0001"), 256, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("0081"), -256, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ff7f"), 32767, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffff"), -32767, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("008000"), 32768, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("008080"), -32768, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffff00"), 65535, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffff80"), -65535, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("000008"), 524288, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("000088"), -524288, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("000070"), 7340032, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("0000f0"), -7340032, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("00008000"), 8388608, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("00008080"), -8388608, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffffff7f"), 2147483647, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffffffff"), -2147483647, defaultScriptNumLen, true, nil},
|
||||
{hexToBytes("ffffffff7f"), 549755813887, 5, true, nil},
|
||||
{hexToBytes("ffffffffff"), -549755813887, 5, true, nil},
|
||||
{hexToBytes("ffffffffffffff7f"), 9223372036854775807, 8, true, nil},
|
||||
{hexToBytes("ffffffffffffffff"), -9223372036854775807, 8, true, nil},
|
||||
{hexToBytes("ffffffffffffffff7f"), -1, 9, true, nil},
|
||||
{hexToBytes("ffffffffffffffffff"), 1, 9, true, nil},
|
||||
{hexToBytes("ffffffffffffffffff7f"), -1, 10, true, nil},
|
||||
{hexToBytes("ffffffffffffffffffff"), 1, 10, true, nil},
|
||||
|
||||
// Minimally encoded values that are out of range for data that
|
||||
// is interpreted as script numbers with the minimal encoding
|
||||
// flag set. Should error and return 0.
|
||||
{hexToBytes("0000008000"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("0000008080"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("0000009000"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("0000009080"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffff00"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffff80"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("0000000001"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("0000000081"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffff00"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffff80"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffffff00"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffffff80"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffffff7f"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
{hexToBytes("ffffffffffffffff"), 0, defaultScriptNumLen, true, errNumTooBig},
|
||||
|
||||
// Non-minimally encoded, but otherwise valid values with
|
||||
// minimal encoding flag. Should error and return 0.
|
||||
{hexToBytes("00"), 0, defaultScriptNumLen, true, errMinimalData}, // 0
|
||||
{hexToBytes("0100"), 0, defaultScriptNumLen, true, errMinimalData}, // 1
|
||||
{hexToBytes("7f00"), 0, defaultScriptNumLen, true, errMinimalData}, // 127
|
||||
{hexToBytes("800000"), 0, defaultScriptNumLen, true, errMinimalData}, // 128
|
||||
{hexToBytes("810000"), 0, defaultScriptNumLen, true, errMinimalData}, // 129
|
||||
{hexToBytes("000100"), 0, defaultScriptNumLen, true, errMinimalData}, // 256
|
||||
{hexToBytes("ff7f00"), 0, defaultScriptNumLen, true, errMinimalData}, // 32767
|
||||
{hexToBytes("00800000"), 0, defaultScriptNumLen, true, errMinimalData}, // 32768
|
||||
{hexToBytes("ffff0000"), 0, defaultScriptNumLen, true, errMinimalData}, // 65535
|
||||
{hexToBytes("00000800"), 0, defaultScriptNumLen, true, errMinimalData}, // 524288
|
||||
{hexToBytes("00007000"), 0, defaultScriptNumLen, true, errMinimalData}, // 7340032
|
||||
{hexToBytes("0009000100"), 0, 5, true, errMinimalData}, // 16779520
|
||||
|
||||
// Non-minimally encoded, but otherwise valid values without
|
||||
// minimal encoding flag. Should not error and return expected
|
||||
// integral number.
|
||||
{hexToBytes("00"), 0, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("0100"), 1, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("7f00"), 127, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("800000"), 128, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("810000"), 129, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("000100"), 256, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("ff7f00"), 32767, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("00800000"), 32768, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("ffff0000"), 65535, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("00000800"), 524288, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("00007000"), 7340032, defaultScriptNumLen, false, nil},
|
||||
{hexToBytes("0009000100"), 16779520, 5, false, nil},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
// Ensure the error code is of the expected type and the error
|
||||
// code matches the value specified in the test instance.
|
||||
gotNum, err := makeScriptNum(test.serialized, test.minimalEncoding,
|
||||
test.numLen)
|
||||
if e := tstCheckScriptError(err, test.err); e != nil {
|
||||
t.Errorf("makeScriptNum(%#x): %v", test.serialized, e)
|
||||
continue
|
||||
}
|
||||
|
||||
if gotNum != test.num {
|
||||
t.Errorf("makeScriptNum(%#x): did not get expected "+
|
||||
"number - got %d, want %d", test.serialized,
|
||||
gotNum, test.num)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TestScriptNumInt32 ensures that the Int32 function on script number behaves
|
||||
// as expected.
|
||||
func TestScriptNumInt32(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
in scriptNum
|
||||
want int32
|
||||
}{
|
||||
// Values inside the valid int32 range are just the values
|
||||
// themselves cast to an int32.
|
||||
{0, 0},
|
||||
{1, 1},
|
||||
{-1, -1},
|
||||
{127, 127},
|
||||
{-127, -127},
|
||||
{128, 128},
|
||||
{-128, -128},
|
||||
{129, 129},
|
||||
{-129, -129},
|
||||
{256, 256},
|
||||
{-256, -256},
|
||||
{32767, 32767},
|
||||
{-32767, -32767},
|
||||
{32768, 32768},
|
||||
{-32768, -32768},
|
||||
{65535, 65535},
|
||||
{-65535, -65535},
|
||||
{524288, 524288},
|
||||
{-524288, -524288},
|
||||
{7340032, 7340032},
|
||||
{-7340032, -7340032},
|
||||
{8388608, 8388608},
|
||||
{-8388608, -8388608},
|
||||
{2147483647, 2147483647},
|
||||
{-2147483647, -2147483647},
|
||||
{-2147483648, -2147483648},
|
||||
|
||||
// Values outside of the valid int32 range are limited to int32.
|
||||
{2147483648, 2147483647},
|
||||
{-2147483649, -2147483648},
|
||||
{1152921504606846975, 2147483647},
|
||||
{-1152921504606846975, -2147483648},
|
||||
{2305843009213693951, 2147483647},
|
||||
{-2305843009213693951, -2147483648},
|
||||
{4611686018427387903, 2147483647},
|
||||
{-4611686018427387903, -2147483648},
|
||||
{9223372036854775807, 2147483647},
|
||||
{-9223372036854775808, -2147483648},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
got := test.in.Int32()
|
||||
if got != test.want {
|
||||
t.Errorf("Int32: did not get expected value for %d - "+
|
||||
"got %d, want %d", test.in, got, test.want)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
+99
@@ -0,0 +1,99 @@
|
||||
// Copyright (c) 2015-2016 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"sync"
|
||||
|
||||
"github.com/btcsuite/btcd/btcec"
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
)
|
||||
|
||||
// sigCacheEntry represents an entry in the SigCache. Entries within the
|
||||
// SigCache are keyed according to the sigHash of the signature. In the
|
||||
// scenario of a cache-hit (according to the sigHash), an additional comparison
|
||||
// of the signature, and public key will be executed in order to ensure a complete
|
||||
// match. In the occasion that two sigHashes collide, the newer sigHash will
|
||||
// simply overwrite the existing entry.
|
||||
type sigCacheEntry struct {
|
||||
sig *btcec.Signature
|
||||
pubKey *btcec.PublicKey
|
||||
}
|
||||
|
||||
// SigCache implements an ECDSA signature verification cache with a randomized
|
||||
// entry eviction policy. Only valid signatures will be added to the cache. The
|
||||
// benefits of SigCache are two fold. Firstly, usage of SigCache mitigates a DoS
|
||||
// attack wherein an attack causes a victim's client to hang due to worst-case
|
||||
// behavior triggered while processing attacker crafted invalid transactions. A
|
||||
// detailed description of the mitigated DoS attack can be found here:
|
||||
// https://bitslog.wordpress.com/2013/01/23/fixed-bitcoin-vulnerability-explanation-why-the-signature-cache-is-a-dos-protection/.
|
||||
// Secondly, usage of the SigCache introduces a signature verification
|
||||
// optimization which speeds up the validation of transactions within a block,
|
||||
// if they've already been seen and verified within the mempool.
|
||||
type SigCache struct {
|
||||
sync.RWMutex
|
||||
validSigs map[chainhash.Hash]sigCacheEntry
|
||||
maxEntries uint
|
||||
}
|
||||
|
||||
// NewSigCache creates and initializes a new instance of SigCache. Its sole
|
||||
// parameter 'maxEntries' represents the maximum number of entries allowed to
|
||||
// exist in the SigCache at any particular moment. Random entries are evicted
|
||||
// to make room for new entries that would cause the number of entries in the
|
||||
// cache to exceed the max.
|
||||
func NewSigCache(maxEntries uint) *SigCache {
|
||||
return &SigCache{
|
||||
validSigs: make(map[chainhash.Hash]sigCacheEntry, maxEntries),
|
||||
maxEntries: maxEntries,
|
||||
}
|
||||
}
|
||||
|
||||
// Exists returns true if an existing entry of 'sig' over 'sigHash' for public
|
||||
// key 'pubKey' is found within the SigCache. Otherwise, false is returned.
|
||||
//
|
||||
// NOTE: This function is safe for concurrent access. Readers won't be blocked
|
||||
// unless there exists a writer, adding an entry to the SigCache.
|
||||
func (s *SigCache) Exists(sigHash chainhash.Hash, sig *btcec.Signature, pubKey *btcec.PublicKey) bool {
|
||||
s.RLock()
|
||||
entry, ok := s.validSigs[sigHash]
|
||||
s.RUnlock()
|
||||
|
||||
return ok && entry.pubKey.IsEqual(pubKey) && entry.sig.IsEqual(sig)
|
||||
}
|
||||
|
||||
// Add adds an entry for a signature over 'sigHash' under public key 'pubKey'
|
||||
// to the signature cache. In the event that the SigCache is 'full', an
|
||||
// existing entry is randomly chosen to be evicted in order to make space for
|
||||
// the new entry.
|
||||
//
|
||||
// NOTE: This function is safe for concurrent access. Writers will block
|
||||
// simultaneous readers until function execution has concluded.
|
||||
func (s *SigCache) Add(sigHash chainhash.Hash, sig *btcec.Signature, pubKey *btcec.PublicKey) {
|
||||
s.Lock()
|
||||
defer s.Unlock()
|
||||
|
||||
if s.maxEntries <= 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// If adding this new entry will put us over the max number of allowed
|
||||
// entries, then evict an entry.
|
||||
if uint(len(s.validSigs)+1) > s.maxEntries {
|
||||
// Remove a random entry from the map. Relying on the random
|
||||
// starting point of Go's map iteration. It's worth noting that
|
||||
// the random iteration starting point is not 100% guaranteed
|
||||
// by the spec, however most Go compilers support it.
|
||||
// Ultimately, the iteration order isn't important here because
|
||||
// in order to manipulate which items are evicted, an adversary
|
||||
// would need to be able to execute preimage attacks on the
|
||||
// hashing function in order to start eviction at a specific
|
||||
// entry.
|
||||
for sigEntry := range s.validSigs {
|
||||
delete(s.validSigs, sigEntry)
|
||||
break
|
||||
}
|
||||
}
|
||||
s.validSigs[sigHash] = sigCacheEntry{sig, pubKey}
|
||||
}
|
||||
+140
@@ -0,0 +1,140 @@
|
||||
// Copyright (c) 2015-2016 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"testing"
|
||||
|
||||
"github.com/btcsuite/btcd/btcec"
|
||||
"github.com/btcsuite/btcd/chaincfg/chainhash"
|
||||
)
|
||||
|
||||
// genRandomSig returns a random message, a signature of the message under the
|
||||
// public key and the public key. This function is used to generate randomized
|
||||
// test data.
|
||||
func genRandomSig() (*chainhash.Hash, *btcec.Signature, *btcec.PublicKey, error) {
|
||||
privKey, err := btcec.NewPrivateKey(btcec.S256())
|
||||
if err != nil {
|
||||
return nil, nil, nil, err
|
||||
}
|
||||
|
||||
var msgHash chainhash.Hash
|
||||
if _, err := rand.Read(msgHash[:]); err != nil {
|
||||
return nil, nil, nil, err
|
||||
}
|
||||
|
||||
sig, err := privKey.Sign(msgHash[:])
|
||||
if err != nil {
|
||||
return nil, nil, nil, err
|
||||
}
|
||||
|
||||
return &msgHash, sig, privKey.PubKey(), nil
|
||||
}
|
||||
|
||||
// TestSigCacheAddExists tests the ability to add, and later check the
|
||||
// existence of a signature triplet in the signature cache.
|
||||
func TestSigCacheAddExists(t *testing.T) {
|
||||
sigCache := NewSigCache(200)
|
||||
|
||||
// Generate a random sigCache entry triplet.
|
||||
msg1, sig1, key1, err := genRandomSig()
|
||||
if err != nil {
|
||||
t.Errorf("unable to generate random signature test data")
|
||||
}
|
||||
|
||||
// Add the triplet to the signature cache.
|
||||
sigCache.Add(*msg1, sig1, key1)
|
||||
|
||||
// The previously added triplet should now be found within the sigcache.
|
||||
sig1Copy, _ := btcec.ParseSignature(sig1.Serialize(), btcec.S256())
|
||||
key1Copy, _ := btcec.ParsePubKey(key1.SerializeCompressed(), btcec.S256())
|
||||
if !sigCache.Exists(*msg1, sig1Copy, key1Copy) {
|
||||
t.Errorf("previously added item not found in signature cache")
|
||||
}
|
||||
}
|
||||
|
||||
// TestSigCacheAddEvictEntry tests the eviction case where a new signature
|
||||
// triplet is added to a full signature cache which should trigger randomized
|
||||
// eviction, followed by adding the new element to the cache.
|
||||
func TestSigCacheAddEvictEntry(t *testing.T) {
|
||||
// Create a sigcache that can hold up to 100 entries.
|
||||
sigCacheSize := uint(100)
|
||||
sigCache := NewSigCache(sigCacheSize)
|
||||
|
||||
// Fill the sigcache up with some random sig triplets.
|
||||
for i := uint(0); i < sigCacheSize; i++ {
|
||||
msg, sig, key, err := genRandomSig()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate random signature test data")
|
||||
}
|
||||
|
||||
sigCache.Add(*msg, sig, key)
|
||||
|
||||
sigCopy, _ := btcec.ParseSignature(sig.Serialize(), btcec.S256())
|
||||
keyCopy, _ := btcec.ParsePubKey(key.SerializeCompressed(), btcec.S256())
|
||||
if !sigCache.Exists(*msg, sigCopy, keyCopy) {
|
||||
t.Errorf("previously added item not found in signature" +
|
||||
"cache")
|
||||
}
|
||||
}
|
||||
|
||||
// The sigcache should now have sigCacheSize entries within it.
|
||||
if uint(len(sigCache.validSigs)) != sigCacheSize {
|
||||
t.Fatalf("sigcache should now have %v entries, instead it has %v",
|
||||
sigCacheSize, len(sigCache.validSigs))
|
||||
}
|
||||
|
||||
// Add a new entry, this should cause eviction of a randomly chosen
|
||||
// previous entry.
|
||||
msgNew, sigNew, keyNew, err := genRandomSig()
|
||||
if err != nil {
|
||||
t.Fatalf("unable to generate random signature test data")
|
||||
}
|
||||
sigCache.Add(*msgNew, sigNew, keyNew)
|
||||
|
||||
// The sigcache should still have sigCache entries.
|
||||
if uint(len(sigCache.validSigs)) != sigCacheSize {
|
||||
t.Fatalf("sigcache should now have %v entries, instead it has %v",
|
||||
sigCacheSize, len(sigCache.validSigs))
|
||||
}
|
||||
|
||||
// The entry added above should be found within the sigcache.
|
||||
sigNewCopy, _ := btcec.ParseSignature(sigNew.Serialize(), btcec.S256())
|
||||
keyNewCopy, _ := btcec.ParsePubKey(keyNew.SerializeCompressed(), btcec.S256())
|
||||
if !sigCache.Exists(*msgNew, sigNewCopy, keyNewCopy) {
|
||||
t.Fatalf("previously added item not found in signature cache")
|
||||
}
|
||||
}
|
||||
|
||||
// TestSigCacheAddMaxEntriesZeroOrNegative tests that if a sigCache is created
|
||||
// with a max size <= 0, then no entries are added to the sigcache at all.
|
||||
func TestSigCacheAddMaxEntriesZeroOrNegative(t *testing.T) {
|
||||
// Create a sigcache that can hold up to 0 entries.
|
||||
sigCache := NewSigCache(0)
|
||||
|
||||
// Generate a random sigCache entry triplet.
|
||||
msg1, sig1, key1, err := genRandomSig()
|
||||
if err != nil {
|
||||
t.Errorf("unable to generate random signature test data")
|
||||
}
|
||||
|
||||
// Add the triplet to the signature cache.
|
||||
sigCache.Add(*msg1, sig1, key1)
|
||||
|
||||
// The generated triplet should not be found.
|
||||
sig1Copy, _ := btcec.ParseSignature(sig1.Serialize(), btcec.S256())
|
||||
key1Copy, _ := btcec.ParsePubKey(key1.SerializeCompressed(), btcec.S256())
|
||||
if sigCache.Exists(*msg1, sig1Copy, key1Copy) {
|
||||
t.Errorf("previously added signature found in sigcache, but" +
|
||||
"shouldn't have been")
|
||||
}
|
||||
|
||||
// There shouldn't be any entries in the sigCache.
|
||||
if len(sigCache.validSigs) != 0 {
|
||||
t.Errorf("%v items found in sigcache, no items should have"+
|
||||
"been added", len(sigCache.validSigs))
|
||||
}
|
||||
}
|
||||
+465
@@ -0,0 +1,465 @@
|
||||
// Copyright (c) 2013-2015 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"github.com/btcsuite/btcd/btcec"
|
||||
"github.com/btcsuite/btcd/chaincfg"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/btcsuite/btcutil"
|
||||
)
|
||||
|
||||
// RawTxInWitnessSignature returns the serialized ECDA signature for the input
|
||||
// idx of the given transaction, with the hashType appended to it. This
|
||||
// function is identical to RawTxInSignature, however the signature generated
|
||||
// signs a new sighash digest defined in BIP0143.
|
||||
func RawTxInWitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int,
|
||||
amt int64, subScript []byte, hashType SigHashType,
|
||||
key *btcec.PrivateKey) ([]byte, error) {
|
||||
|
||||
parsedScript, err := parseScript(subScript)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("cannot parse output script: %v", err)
|
||||
}
|
||||
|
||||
hash, err := calcWitnessSignatureHash(parsedScript, sigHashes, hashType, tx,
|
||||
idx, amt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
signature, err := key.Sign(hash)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("cannot sign tx input: %s", err)
|
||||
}
|
||||
|
||||
return append(signature.Serialize(), byte(hashType)), nil
|
||||
}
|
||||
|
||||
// WitnessSignature creates an input witness stack for tx to spend BTC sent
|
||||
// from a previous output to the owner of privKey using the p2wkh script
|
||||
// template. The passed transaction must contain all the inputs and outputs as
|
||||
// dictated by the passed hashType. The signature generated observes the new
|
||||
// transaction digest algorithm defined within BIP0143.
|
||||
func WitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int, amt int64,
|
||||
subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey,
|
||||
compress bool) (wire.TxWitness, error) {
|
||||
|
||||
sig, err := RawTxInWitnessSignature(tx, sigHashes, idx, amt, subscript,
|
||||
hashType, privKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
pk := (*btcec.PublicKey)(&privKey.PublicKey)
|
||||
var pkData []byte
|
||||
if compress {
|
||||
pkData = pk.SerializeCompressed()
|
||||
} else {
|
||||
pkData = pk.SerializeUncompressed()
|
||||
}
|
||||
|
||||
// A witness script is actually a stack, so we return an array of byte
|
||||
// slices here, rather than a single byte slice.
|
||||
return wire.TxWitness{sig, pkData}, nil
|
||||
}
|
||||
|
||||
// RawTxInSignature returns the serialized ECDSA signature for the input idx of
|
||||
// the given transaction, with hashType appended to it.
|
||||
func RawTxInSignature(tx *wire.MsgTx, idx int, subScript []byte,
|
||||
hashType SigHashType, key *btcec.PrivateKey) ([]byte, error) {
|
||||
|
||||
parsedScript, err := parseScript(subScript)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("cannot parse output script: %v", err)
|
||||
}
|
||||
hash := calcSignatureHash(parsedScript, hashType, tx, idx)
|
||||
signature, err := key.Sign(hash)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("cannot sign tx input: %s", err)
|
||||
}
|
||||
|
||||
return append(signature.Serialize(), byte(hashType)), nil
|
||||
}
|
||||
|
||||
// SignatureScript creates an input signature script for tx to spend BTC sent
|
||||
// from a previous output to the owner of privKey. tx must include all
|
||||
// transaction inputs and outputs, however txin scripts are allowed to be filled
|
||||
// or empty. The returned script is calculated to be used as the idx'th txin
|
||||
// sigscript for tx. subscript is the PkScript of the previous output being used
|
||||
// as the idx'th input. privKey is serialized in either a compressed or
|
||||
// uncompressed format based on compress. This format must match the same format
|
||||
// used to generate the payment address, or the script validation will fail.
|
||||
func SignatureScript(tx *wire.MsgTx, idx int, subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey, compress bool) ([]byte, error) {
|
||||
sig, err := RawTxInSignature(tx, idx, subscript, hashType, privKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
pk := (*btcec.PublicKey)(&privKey.PublicKey)
|
||||
var pkData []byte
|
||||
if compress {
|
||||
pkData = pk.SerializeCompressed()
|
||||
} else {
|
||||
pkData = pk.SerializeUncompressed()
|
||||
}
|
||||
|
||||
return NewScriptBuilder().AddData(sig).AddData(pkData).Script()
|
||||
}
|
||||
|
||||
func p2pkSignatureScript(tx *wire.MsgTx, idx int, subScript []byte, hashType SigHashType, privKey *btcec.PrivateKey) ([]byte, error) {
|
||||
sig, err := RawTxInSignature(tx, idx, subScript, hashType, privKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return NewScriptBuilder().AddData(sig).Script()
|
||||
}
|
||||
|
||||
// signMultiSig signs as many of the outputs in the provided multisig script as
|
||||
// possible. It returns the generated script and a boolean if the script fulfils
|
||||
// the contract (i.e. nrequired signatures are provided). Since it is arguably
|
||||
// legal to not be able to sign any of the outputs, no error is returned.
|
||||
func signMultiSig(tx *wire.MsgTx, idx int, subScript []byte, hashType SigHashType,
|
||||
addresses []btcutil.Address, nRequired int, kdb KeyDB) ([]byte, bool) {
|
||||
// We start with a single OP_FALSE to work around the (now standard)
|
||||
// but in the reference implementation that causes a spurious pop at
|
||||
// the end of OP_CHECKMULTISIG.
|
||||
builder := NewScriptBuilder().AddOp(OP_FALSE)
|
||||
signed := 0
|
||||
for _, addr := range addresses {
|
||||
key, _, err := kdb.GetKey(addr)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
sig, err := RawTxInSignature(tx, idx, subScript, hashType, key)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
|
||||
builder.AddData(sig)
|
||||
signed++
|
||||
if signed == nRequired {
|
||||
break
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
script, _ := builder.Script()
|
||||
return script, signed == nRequired
|
||||
}
|
||||
|
||||
func sign(chainParams *chaincfg.Params, tx *wire.MsgTx, idx int,
|
||||
subScript []byte, hashType SigHashType, kdb KeyDB, sdb ScriptDB) ([]byte,
|
||||
ScriptClass, []btcutil.Address, int, error) {
|
||||
|
||||
class, addresses, nrequired, err := ExtractPkScriptAddrs(subScript,
|
||||
chainParams)
|
||||
if err != nil {
|
||||
return nil, NonStandardTy, nil, 0, err
|
||||
}
|
||||
|
||||
switch class {
|
||||
case PubKeyTy:
|
||||
// look up key for address
|
||||
key, _, err := kdb.GetKey(addresses[0])
|
||||
if err != nil {
|
||||
return nil, class, nil, 0, err
|
||||
}
|
||||
|
||||
script, err := p2pkSignatureScript(tx, idx, subScript, hashType,
|
||||
key)
|
||||
if err != nil {
|
||||
return nil, class, nil, 0, err
|
||||
}
|
||||
|
||||
return script, class, addresses, nrequired, nil
|
||||
case PubKeyHashTy:
|
||||
// look up key for address
|
||||
key, compressed, err := kdb.GetKey(addresses[0])
|
||||
if err != nil {
|
||||
return nil, class, nil, 0, err
|
||||
}
|
||||
|
||||
script, err := SignatureScript(tx, idx, subScript, hashType,
|
||||
key, compressed)
|
||||
if err != nil {
|
||||
return nil, class, nil, 0, err
|
||||
}
|
||||
|
||||
return script, class, addresses, nrequired, nil
|
||||
case ScriptHashTy:
|
||||
script, err := sdb.GetScript(addresses[0])
|
||||
if err != nil {
|
||||
return nil, class, nil, 0, err
|
||||
}
|
||||
|
||||
return script, class, addresses, nrequired, nil
|
||||
case MultiSigTy:
|
||||
script, _ := signMultiSig(tx, idx, subScript, hashType,
|
||||
addresses, nrequired, kdb)
|
||||
return script, class, addresses, nrequired, nil
|
||||
case NullDataTy:
|
||||
return nil, class, nil, 0,
|
||||
errors.New("can't sign NULLDATA transactions")
|
||||
default:
|
||||
return nil, class, nil, 0,
|
||||
errors.New("can't sign unknown transactions")
|
||||
}
|
||||
}
|
||||
|
||||
// mergeScripts merges sigScript and prevScript assuming they are both
|
||||
// partial solutions for pkScript spending output idx of tx. class, addresses
|
||||
// and nrequired are the result of extracting the addresses from pkscript.
|
||||
// The return value is the best effort merging of the two scripts. Calling this
|
||||
// function with addresses, class and nrequired that do not match pkScript is
|
||||
// an error and results in undefined behaviour.
|
||||
func mergeScripts(chainParams *chaincfg.Params, tx *wire.MsgTx, idx int,
|
||||
pkScript []byte, class ScriptClass, addresses []btcutil.Address,
|
||||
nRequired int, sigScript, prevScript []byte) []byte {
|
||||
|
||||
// TODO: the scripthash and multisig paths here are overly
|
||||
// inefficient in that they will recompute already known data.
|
||||
// some internal refactoring could probably make this avoid needless
|
||||
// extra calculations.
|
||||
switch class {
|
||||
case ScriptHashTy:
|
||||
// Remove the last push in the script and then recurse.
|
||||
// this could be a lot less inefficient.
|
||||
sigPops, err := parseScript(sigScript)
|
||||
if err != nil || len(sigPops) == 0 {
|
||||
return prevScript
|
||||
}
|
||||
prevPops, err := parseScript(prevScript)
|
||||
if err != nil || len(prevPops) == 0 {
|
||||
return sigScript
|
||||
}
|
||||
|
||||
// assume that script in sigPops is the correct one, we just
|
||||
// made it.
|
||||
script := sigPops[len(sigPops)-1].data
|
||||
|
||||
// We already know this information somewhere up the stack.
|
||||
class, addresses, nrequired, _ :=
|
||||
ExtractPkScriptAddrs(script, chainParams)
|
||||
|
||||
// regenerate scripts.
|
||||
sigScript, _ := unparseScript(sigPops)
|
||||
prevScript, _ := unparseScript(prevPops)
|
||||
|
||||
// Merge
|
||||
mergedScript := mergeScripts(chainParams, tx, idx, script,
|
||||
class, addresses, nrequired, sigScript, prevScript)
|
||||
|
||||
// Reappend the script and return the result.
|
||||
builder := NewScriptBuilder()
|
||||
builder.AddOps(mergedScript)
|
||||
builder.AddData(script)
|
||||
finalScript, _ := builder.Script()
|
||||
return finalScript
|
||||
case MultiSigTy:
|
||||
return mergeMultiSig(tx, idx, addresses, nRequired, pkScript,
|
||||
sigScript, prevScript)
|
||||
|
||||
// It doesn't actually make sense to merge anything other than multiig
|
||||
// and scripthash (because it could contain multisig). Everything else
|
||||
// has either zero signature, can't be spent, or has a single signature
|
||||
// which is either present or not. The other two cases are handled
|
||||
// above. In the conflict case here we just assume the longest is
|
||||
// correct (this matches behaviour of the reference implementation).
|
||||
default:
|
||||
if len(sigScript) > len(prevScript) {
|
||||
return sigScript
|
||||
}
|
||||
return prevScript
|
||||
}
|
||||
}
|
||||
|
||||
// mergeMultiSig combines the two signature scripts sigScript and prevScript
|
||||
// that both provide signatures for pkScript in output idx of tx. addresses
|
||||
// and nRequired should be the results from extracting the addresses from
|
||||
// pkScript. Since this function is internal only we assume that the arguments
|
||||
// have come from other functions internally and thus are all consistent with
|
||||
// each other, behaviour is undefined if this contract is broken.
|
||||
func mergeMultiSig(tx *wire.MsgTx, idx int, addresses []btcutil.Address,
|
||||
nRequired int, pkScript, sigScript, prevScript []byte) []byte {
|
||||
|
||||
// This is an internal only function and we already parsed this script
|
||||
// as ok for multisig (this is how we got here), so if this fails then
|
||||
// all assumptions are broken and who knows which way is up?
|
||||
pkPops, _ := parseScript(pkScript)
|
||||
|
||||
sigPops, err := parseScript(sigScript)
|
||||
if err != nil || len(sigPops) == 0 {
|
||||
return prevScript
|
||||
}
|
||||
|
||||
prevPops, err := parseScript(prevScript)
|
||||
if err != nil || len(prevPops) == 0 {
|
||||
return sigScript
|
||||
}
|
||||
|
||||
// Convenience function to avoid duplication.
|
||||
extractSigs := func(pops []parsedOpcode, sigs [][]byte) [][]byte {
|
||||
for _, pop := range pops {
|
||||
if len(pop.data) != 0 {
|
||||
sigs = append(sigs, pop.data)
|
||||
}
|
||||
}
|
||||
return sigs
|
||||
}
|
||||
|
||||
possibleSigs := make([][]byte, 0, len(sigPops)+len(prevPops))
|
||||
possibleSigs = extractSigs(sigPops, possibleSigs)
|
||||
possibleSigs = extractSigs(prevPops, possibleSigs)
|
||||
|
||||
// Now we need to match the signatures to pubkeys, the only real way to
|
||||
// do that is to try to verify them all and match it to the pubkey
|
||||
// that verifies it. we then can go through the addresses in order
|
||||
// to build our script. Anything that doesn't parse or doesn't verify we
|
||||
// throw away.
|
||||
addrToSig := make(map[string][]byte)
|
||||
sigLoop:
|
||||
for _, sig := range possibleSigs {
|
||||
|
||||
// can't have a valid signature that doesn't at least have a
|
||||
// hashtype, in practise it is even longer than this. but
|
||||
// that'll be checked next.
|
||||
if len(sig) < 1 {
|
||||
continue
|
||||
}
|
||||
tSig := sig[:len(sig)-1]
|
||||
hashType := SigHashType(sig[len(sig)-1])
|
||||
|
||||
pSig, err := btcec.ParseDERSignature(tSig, btcec.S256())
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
|
||||
// We have to do this each round since hash types may vary
|
||||
// between signatures and so the hash will vary. We can,
|
||||
// however, assume no sigs etc are in the script since that
|
||||
// would make the transaction nonstandard and thus not
|
||||
// MultiSigTy, so we just need to hash the full thing.
|
||||
hash := calcSignatureHash(pkPops, hashType, tx, idx)
|
||||
|
||||
for _, addr := range addresses {
|
||||
// All multisig addresses should be pubkey addresses
|
||||
// it is an error to call this internal function with
|
||||
// bad input.
|
||||
pkaddr := addr.(*btcutil.AddressPubKey)
|
||||
|
||||
pubKey := pkaddr.PubKey()
|
||||
|
||||
// If it matches we put it in the map. We only
|
||||
// can take one signature per public key so if we
|
||||
// already have one, we can throw this away.
|
||||
if pSig.Verify(hash, pubKey) {
|
||||
aStr := addr.EncodeAddress()
|
||||
if _, ok := addrToSig[aStr]; !ok {
|
||||
addrToSig[aStr] = sig
|
||||
}
|
||||
continue sigLoop
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Extra opcode to handle the extra arg consumed (due to previous bugs
|
||||
// in the reference implementation).
|
||||
builder := NewScriptBuilder().AddOp(OP_FALSE)
|
||||
doneSigs := 0
|
||||
// This assumes that addresses are in the same order as in the script.
|
||||
for _, addr := range addresses {
|
||||
sig, ok := addrToSig[addr.EncodeAddress()]
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
builder.AddData(sig)
|
||||
doneSigs++
|
||||
if doneSigs == nRequired {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// padding for missing ones.
|
||||
for i := doneSigs; i < nRequired; i++ {
|
||||
builder.AddOp(OP_0)
|
||||
}
|
||||
|
||||
script, _ := builder.Script()
|
||||
return script
|
||||
}
|
||||
|
||||
// KeyDB is an interface type provided to SignTxOutput, it encapsulates
|
||||
// any user state required to get the private keys for an address.
|
||||
type KeyDB interface {
|
||||
GetKey(btcutil.Address) (*btcec.PrivateKey, bool, error)
|
||||
}
|
||||
|
||||
// KeyClosure implements KeyDB with a closure.
|
||||
type KeyClosure func(btcutil.Address) (*btcec.PrivateKey, bool, error)
|
||||
|
||||
// GetKey implements KeyDB by returning the result of calling the closure.
|
||||
func (kc KeyClosure) GetKey(address btcutil.Address) (*btcec.PrivateKey,
|
||||
bool, error) {
|
||||
return kc(address)
|
||||
}
|
||||
|
||||
// ScriptDB is an interface type provided to SignTxOutput, it encapsulates any
|
||||
// user state required to get the scripts for an pay-to-script-hash address.
|
||||
type ScriptDB interface {
|
||||
GetScript(btcutil.Address) ([]byte, error)
|
||||
}
|
||||
|
||||
// ScriptClosure implements ScriptDB with a closure.
|
||||
type ScriptClosure func(btcutil.Address) ([]byte, error)
|
||||
|
||||
// GetScript implements ScriptDB by returning the result of calling the closure.
|
||||
func (sc ScriptClosure) GetScript(address btcutil.Address) ([]byte, error) {
|
||||
return sc(address)
|
||||
}
|
||||
|
||||
// SignTxOutput signs output idx of the given tx to resolve the script given in
|
||||
// pkScript with a signature type of hashType. Any keys required will be
|
||||
// looked up by calling getKey() with the string of the given address.
|
||||
// Any pay-to-script-hash signatures will be similarly looked up by calling
|
||||
// getScript. If previousScript is provided then the results in previousScript
|
||||
// will be merged in a type-dependent manner with the newly generated.
|
||||
// signature script.
|
||||
func SignTxOutput(chainParams *chaincfg.Params, tx *wire.MsgTx, idx int,
|
||||
pkScript []byte, hashType SigHashType, kdb KeyDB, sdb ScriptDB,
|
||||
previousScript []byte) ([]byte, error) {
|
||||
|
||||
sigScript, class, addresses, nrequired, err := sign(chainParams, tx,
|
||||
idx, pkScript, hashType, kdb, sdb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if class == ScriptHashTy {
|
||||
// TODO keep the sub addressed and pass down to merge.
|
||||
realSigScript, _, _, _, err := sign(chainParams, tx, idx,
|
||||
sigScript, hashType, kdb, sdb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Append the p2sh script as the last push in the script.
|
||||
builder := NewScriptBuilder()
|
||||
builder.AddOps(realSigScript)
|
||||
builder.AddData(sigScript)
|
||||
|
||||
sigScript, _ = builder.Script()
|
||||
// TODO keep a copy of the script for merging.
|
||||
}
|
||||
|
||||
// Merge scripts. with any previous data, if any.
|
||||
mergedScript := mergeScripts(chainParams, tx, idx, pkScript, class,
|
||||
addresses, nrequired, sigScript, previousScript)
|
||||
return mergedScript, nil
|
||||
}
|
||||
+1716
File diff suppressed because it is too large
Load Diff
+361
@@ -0,0 +1,361 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// asBool gets the boolean value of the byte array.
|
||||
func asBool(t []byte) bool {
|
||||
for i := range t {
|
||||
if t[i] != 0 {
|
||||
// Negative 0 is also considered false.
|
||||
if i == len(t)-1 && t[i] == 0x80 {
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// fromBool converts a boolean into the appropriate byte array.
|
||||
func fromBool(v bool) []byte {
|
||||
if v {
|
||||
return []byte{1}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// stack represents a stack of immutable objects to be used with bitcoin
|
||||
// scripts. Objects may be shared, therefore in usage if a value is to be
|
||||
// changed it *must* be deep-copied first to avoid changing other values on the
|
||||
// stack.
|
||||
type stack struct {
|
||||
stk [][]byte
|
||||
verifyMinimalData bool
|
||||
}
|
||||
|
||||
// Depth returns the number of items on the stack.
|
||||
func (s *stack) Depth() int32 {
|
||||
return int32(len(s.stk))
|
||||
}
|
||||
|
||||
// PushByteArray adds the given back array to the top of the stack.
|
||||
//
|
||||
// Stack transformation: [... x1 x2] -> [... x1 x2 data]
|
||||
func (s *stack) PushByteArray(so []byte) {
|
||||
s.stk = append(s.stk, so)
|
||||
}
|
||||
|
||||
// PushInt converts the provided scriptNum to a suitable byte array then pushes
|
||||
// it onto the top of the stack.
|
||||
//
|
||||
// Stack transformation: [... x1 x2] -> [... x1 x2 int]
|
||||
func (s *stack) PushInt(val scriptNum) {
|
||||
s.PushByteArray(val.Bytes())
|
||||
}
|
||||
|
||||
// PushBool converts the provided boolean to a suitable byte array then pushes
|
||||
// it onto the top of the stack.
|
||||
//
|
||||
// Stack transformation: [... x1 x2] -> [... x1 x2 bool]
|
||||
func (s *stack) PushBool(val bool) {
|
||||
s.PushByteArray(fromBool(val))
|
||||
}
|
||||
|
||||
// PopByteArray pops the value off the top of the stack and returns it.
|
||||
//
|
||||
// Stack transformation: [... x1 x2 x3] -> [... x1 x2]
|
||||
func (s *stack) PopByteArray() ([]byte, error) {
|
||||
return s.nipN(0)
|
||||
}
|
||||
|
||||
// PopInt pops the value off the top of the stack, converts it into a script
|
||||
// num, and returns it. The act of converting to a script num enforces the
|
||||
// consensus rules imposed on data interpreted as numbers.
|
||||
//
|
||||
// Stack transformation: [... x1 x2 x3] -> [... x1 x2]
|
||||
func (s *stack) PopInt() (scriptNum, error) {
|
||||
so, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
return makeScriptNum(so, s.verifyMinimalData, defaultScriptNumLen)
|
||||
}
|
||||
|
||||
// PopBool pops the value off the top of the stack, converts it into a bool, and
|
||||
// returns it.
|
||||
//
|
||||
// Stack transformation: [... x1 x2 x3] -> [... x1 x2]
|
||||
func (s *stack) PopBool() (bool, error) {
|
||||
so, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
return asBool(so), nil
|
||||
}
|
||||
|
||||
// PeekByteArray returns the Nth item on the stack without removing it.
|
||||
func (s *stack) PeekByteArray(idx int32) ([]byte, error) {
|
||||
sz := int32(len(s.stk))
|
||||
if idx < 0 || idx >= sz {
|
||||
str := fmt.Sprintf("index %d is invalid for stack size %d", idx,
|
||||
sz)
|
||||
return nil, scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
return s.stk[sz-idx-1], nil
|
||||
}
|
||||
|
||||
// PeekInt returns the Nth item on the stack as a script num without removing
|
||||
// it. The act of converting to a script num enforces the consensus rules
|
||||
// imposed on data interpreted as numbers.
|
||||
func (s *stack) PeekInt(idx int32) (scriptNum, error) {
|
||||
so, err := s.PeekByteArray(idx)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
return makeScriptNum(so, s.verifyMinimalData, defaultScriptNumLen)
|
||||
}
|
||||
|
||||
// PeekBool returns the Nth item on the stack as a bool without removing it.
|
||||
func (s *stack) PeekBool(idx int32) (bool, error) {
|
||||
so, err := s.PeekByteArray(idx)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
return asBool(so), nil
|
||||
}
|
||||
|
||||
// nipN is an internal function that removes the nth item on the stack and
|
||||
// returns it.
|
||||
//
|
||||
// Stack transformation:
|
||||
// nipN(0): [... x1 x2 x3] -> [... x1 x2]
|
||||
// nipN(1): [... x1 x2 x3] -> [... x1 x3]
|
||||
// nipN(2): [... x1 x2 x3] -> [... x2 x3]
|
||||
func (s *stack) nipN(idx int32) ([]byte, error) {
|
||||
sz := int32(len(s.stk))
|
||||
if idx < 0 || idx > sz-1 {
|
||||
str := fmt.Sprintf("index %d is invalid for stack size %d", idx,
|
||||
sz)
|
||||
return nil, scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
so := s.stk[sz-idx-1]
|
||||
if idx == 0 {
|
||||
s.stk = s.stk[:sz-1]
|
||||
} else if idx == sz-1 {
|
||||
s1 := make([][]byte, sz-1)
|
||||
copy(s1, s.stk[1:])
|
||||
s.stk = s1
|
||||
} else {
|
||||
s1 := s.stk[sz-idx : sz]
|
||||
s.stk = s.stk[:sz-idx-1]
|
||||
s.stk = append(s.stk, s1...)
|
||||
}
|
||||
return so, nil
|
||||
}
|
||||
|
||||
// NipN removes the Nth object on the stack
|
||||
//
|
||||
// Stack transformation:
|
||||
// NipN(0): [... x1 x2 x3] -> [... x1 x2]
|
||||
// NipN(1): [... x1 x2 x3] -> [... x1 x3]
|
||||
// NipN(2): [... x1 x2 x3] -> [... x2 x3]
|
||||
func (s *stack) NipN(idx int32) error {
|
||||
_, err := s.nipN(idx)
|
||||
return err
|
||||
}
|
||||
|
||||
// Tuck copies the item at the top of the stack and inserts it before the 2nd
|
||||
// to top item.
|
||||
//
|
||||
// Stack transformation: [... x1 x2] -> [... x2 x1 x2]
|
||||
func (s *stack) Tuck() error {
|
||||
so2, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
so1, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.PushByteArray(so2) // stack [... x2]
|
||||
s.PushByteArray(so1) // stack [... x2 x1]
|
||||
s.PushByteArray(so2) // stack [... x2 x1 x2]
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// DropN removes the top N items from the stack.
|
||||
//
|
||||
// Stack transformation:
|
||||
// DropN(1): [... x1 x2] -> [... x1]
|
||||
// DropN(2): [... x1 x2] -> [...]
|
||||
func (s *stack) DropN(n int32) error {
|
||||
if n < 1 {
|
||||
str := fmt.Sprintf("attempt to drop %d items from stack", n)
|
||||
return scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
for ; n > 0; n-- {
|
||||
_, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// DupN duplicates the top N items on the stack.
|
||||
//
|
||||
// Stack transformation:
|
||||
// DupN(1): [... x1 x2] -> [... x1 x2 x2]
|
||||
// DupN(2): [... x1 x2] -> [... x1 x2 x1 x2]
|
||||
func (s *stack) DupN(n int32) error {
|
||||
if n < 1 {
|
||||
str := fmt.Sprintf("attempt to dup %d stack items", n)
|
||||
return scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
// Iteratively duplicate the value n-1 down the stack n times.
|
||||
// This leaves an in-order duplicate of the top n items on the stack.
|
||||
for i := n; i > 0; i-- {
|
||||
so, err := s.PeekByteArray(n - 1)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.PushByteArray(so)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// RotN rotates the top 3N items on the stack to the left N times.
|
||||
//
|
||||
// Stack transformation:
|
||||
// RotN(1): [... x1 x2 x3] -> [... x2 x3 x1]
|
||||
// RotN(2): [... x1 x2 x3 x4 x5 x6] -> [... x3 x4 x5 x6 x1 x2]
|
||||
func (s *stack) RotN(n int32) error {
|
||||
if n < 1 {
|
||||
str := fmt.Sprintf("attempt to rotate %d stack items", n)
|
||||
return scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
// Nip the 3n-1th item from the stack to the top n times to rotate
|
||||
// them up to the head of the stack.
|
||||
entry := 3*n - 1
|
||||
for i := n; i > 0; i-- {
|
||||
so, err := s.nipN(entry)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
s.PushByteArray(so)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SwapN swaps the top N items on the stack with those below them.
|
||||
//
|
||||
// Stack transformation:
|
||||
// SwapN(1): [... x1 x2] -> [... x2 x1]
|
||||
// SwapN(2): [... x1 x2 x3 x4] -> [... x3 x4 x1 x2]
|
||||
func (s *stack) SwapN(n int32) error {
|
||||
if n < 1 {
|
||||
str := fmt.Sprintf("attempt to swap %d stack items", n)
|
||||
return scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
entry := 2*n - 1
|
||||
for i := n; i > 0; i-- {
|
||||
// Swap 2n-1th entry to top.
|
||||
so, err := s.nipN(entry)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
s.PushByteArray(so)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// OverN copies N items N items back to the top of the stack.
|
||||
//
|
||||
// Stack transformation:
|
||||
// OverN(1): [... x1 x2 x3] -> [... x1 x2 x3 x2]
|
||||
// OverN(2): [... x1 x2 x3 x4] -> [... x1 x2 x3 x4 x1 x2]
|
||||
func (s *stack) OverN(n int32) error {
|
||||
if n < 1 {
|
||||
str := fmt.Sprintf("attempt to perform over on %d stack items",
|
||||
n)
|
||||
return scriptError(ErrInvalidStackOperation, str)
|
||||
}
|
||||
|
||||
// Copy 2n-1th entry to top of the stack.
|
||||
entry := 2*n - 1
|
||||
for ; n > 0; n-- {
|
||||
so, err := s.PeekByteArray(entry)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.PushByteArray(so)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// PickN copies the item N items back in the stack to the top.
|
||||
//
|
||||
// Stack transformation:
|
||||
// PickN(0): [x1 x2 x3] -> [x1 x2 x3 x3]
|
||||
// PickN(1): [x1 x2 x3] -> [x1 x2 x3 x2]
|
||||
// PickN(2): [x1 x2 x3] -> [x1 x2 x3 x1]
|
||||
func (s *stack) PickN(n int32) error {
|
||||
so, err := s.PeekByteArray(n)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.PushByteArray(so)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// RollN moves the item N items back in the stack to the top.
|
||||
//
|
||||
// Stack transformation:
|
||||
// RollN(0): [x1 x2 x3] -> [x1 x2 x3]
|
||||
// RollN(1): [x1 x2 x3] -> [x1 x3 x2]
|
||||
// RollN(2): [x1 x2 x3] -> [x2 x3 x1]
|
||||
func (s *stack) RollN(n int32) error {
|
||||
so, err := s.nipN(n)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
s.PushByteArray(so)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// String returns the stack in a readable format.
|
||||
func (s *stack) String() string {
|
||||
var result string
|
||||
for _, stack := range s.stk {
|
||||
if len(stack) == 0 {
|
||||
result += "00000000 <empty>\n"
|
||||
}
|
||||
result += hex.Dump(stack)
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
+950
@@ -0,0 +1,950 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// tstCheckScriptError ensures the type of the two passed errors are of the
|
||||
// same type (either both nil or both of type Error) and their error codes
|
||||
// match when not nil.
|
||||
func tstCheckScriptError(gotErr, wantErr error) error {
|
||||
// Ensure the error code is of the expected type and the error
|
||||
// code matches the value specified in the test instance.
|
||||
if reflect.TypeOf(gotErr) != reflect.TypeOf(wantErr) {
|
||||
return fmt.Errorf("wrong error - got %T (%[1]v), want %T",
|
||||
gotErr, wantErr)
|
||||
}
|
||||
if gotErr == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Ensure the want error type is a script error.
|
||||
werr, ok := wantErr.(Error)
|
||||
if !ok {
|
||||
return fmt.Errorf("unexpected test error type %T", wantErr)
|
||||
}
|
||||
|
||||
// Ensure the error codes match. It's safe to use a raw type assert
|
||||
// here since the code above already proved they are the same type and
|
||||
// the want error is a script error.
|
||||
gotErrorCode := gotErr.(Error).ErrorCode
|
||||
if gotErrorCode != werr.ErrorCode {
|
||||
return fmt.Errorf("mismatched error code - got %v (%v), want %v",
|
||||
gotErrorCode, gotErr, werr.ErrorCode)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// TestStack tests that all of the stack operations work as expected.
|
||||
func TestStack(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
before [][]byte
|
||||
operation func(*stack) error
|
||||
err error
|
||||
after [][]byte
|
||||
}{
|
||||
{
|
||||
"noop",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
},
|
||||
{
|
||||
"peek underflow (byte)",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
_, err := s.PeekByteArray(5)
|
||||
return err
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"peek underflow (int)",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
_, err := s.PeekInt(5)
|
||||
return err
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"peek underflow (bool)",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
_, err := s.PeekBool(5)
|
||||
return err
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
val, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !bytes.Equal(val, []byte{5}) {
|
||||
return errors.New("not equal")
|
||||
}
|
||||
return err
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
},
|
||||
{
|
||||
"pop everything",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
for i := 0; i < 5; i++ {
|
||||
_, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop underflow",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}},
|
||||
func(s *stack) error {
|
||||
for i := 0; i < 6; i++ {
|
||||
_, err := s.PopByteArray()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop bool",
|
||||
[][]byte{nil},
|
||||
func(s *stack) error {
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop bool",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop bool",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
_, err := s.PopBool()
|
||||
return err
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt 0",
|
||||
[][]byte{{0x0}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != 0 {
|
||||
return errors.New("0 != 0 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt -0",
|
||||
[][]byte{{0x80}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != 0 {
|
||||
return errors.New("-0 != 0 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt 1",
|
||||
[][]byte{{0x01}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != 1 {
|
||||
return errors.New("1 != 1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt 1 leading 0",
|
||||
[][]byte{{0x01, 0x00, 0x00, 0x00}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != 1 {
|
||||
fmt.Printf("%v != %v\n", v, 1)
|
||||
return errors.New("1 != 1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt -1",
|
||||
[][]byte{{0x81}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != -1 {
|
||||
return errors.New("-1 != -1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"popInt -1 leading 0",
|
||||
[][]byte{{0x01, 0x00, 0x00, 0x80}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != -1 {
|
||||
fmt.Printf("%v != %v\n", v, -1)
|
||||
return errors.New("-1 != -1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
// Triggers the multibyte case in asInt
|
||||
{
|
||||
"popInt -513",
|
||||
[][]byte{{0x1, 0x82}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != -513 {
|
||||
fmt.Printf("%v != %v\n", v, -513)
|
||||
return errors.New("1 != 1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
// Confirm that the asInt code doesn't modify the base data.
|
||||
{
|
||||
"peekint nomodify -1",
|
||||
[][]byte{{0x01, 0x00, 0x00, 0x80}},
|
||||
func(s *stack) error {
|
||||
v, err := s.PeekInt(0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if v != -1 {
|
||||
fmt.Printf("%v != %v\n", v, -1)
|
||||
return errors.New("-1 != -1 on popInt")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{0x01, 0x00, 0x00, 0x80}},
|
||||
},
|
||||
{
|
||||
"PushInt 0",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(0))
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{}},
|
||||
},
|
||||
{
|
||||
"PushInt 1",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(1))
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{0x1}},
|
||||
},
|
||||
{
|
||||
"PushInt -1",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(-1))
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{0x81}},
|
||||
},
|
||||
{
|
||||
"PushInt two bytes",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(256))
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
// little endian.. *sigh*
|
||||
[][]byte{{0x00, 0x01}},
|
||||
},
|
||||
{
|
||||
"PushInt leading zeros",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
// this will have the highbit set
|
||||
s.PushInt(scriptNum(128))
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{0x80, 0x00}},
|
||||
},
|
||||
{
|
||||
"dup",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {1}},
|
||||
},
|
||||
{
|
||||
"dup2",
|
||||
[][]byte{{1}, {2}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {1}, {2}},
|
||||
},
|
||||
{
|
||||
"dup3",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(3)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {1}, {2}, {3}},
|
||||
},
|
||||
{
|
||||
"dup0",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(0)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"dup-1",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(-1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"dup too much",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.DupN(2)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"PushBool true",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushBool(true)
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}},
|
||||
},
|
||||
{
|
||||
"PushBool false",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushBool(false)
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{nil},
|
||||
},
|
||||
{
|
||||
"PushBool PopBool",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushBool(true)
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"PushBool PopBool 2",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushBool(false)
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"PushInt PopBool",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(1))
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"PushInt PopBool 2",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(0))
|
||||
val, err := s.PopBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val {
|
||||
return errors.New("unexpected value")
|
||||
}
|
||||
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Nip top",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.NipN(0)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}},
|
||||
},
|
||||
{
|
||||
"Nip middle",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.NipN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {3}},
|
||||
},
|
||||
{
|
||||
"Nip low",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.NipN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{2}, {3}},
|
||||
},
|
||||
{
|
||||
"Nip too much",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
// bite off more than we can chew
|
||||
return s.NipN(3)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
[][]byte{{2}, {3}},
|
||||
},
|
||||
{
|
||||
"keep on tucking",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.Tuck()
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {3}, {2}, {3}},
|
||||
},
|
||||
{
|
||||
"a little tucked up",
|
||||
[][]byte{{1}}, // too few arguments for tuck
|
||||
func(s *stack) error {
|
||||
return s.Tuck()
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"all tucked up",
|
||||
nil, // too few arguments for tuck
|
||||
func(s *stack) error {
|
||||
return s.Tuck()
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"drop 1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
},
|
||||
{
|
||||
"drop 2",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}},
|
||||
},
|
||||
{
|
||||
"drop 3",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(3)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}},
|
||||
},
|
||||
{
|
||||
"drop 4",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(4)
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"drop 4/5",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(5)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"drop invalid",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.DropN(0)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Rot1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.RotN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {3}, {4}, {2}},
|
||||
},
|
||||
{
|
||||
"Rot2",
|
||||
[][]byte{{1}, {2}, {3}, {4}, {5}, {6}},
|
||||
func(s *stack) error {
|
||||
return s.RotN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{3}, {4}, {5}, {6}, {1}, {2}},
|
||||
},
|
||||
{
|
||||
"Rot too little",
|
||||
[][]byte{{1}, {2}},
|
||||
func(s *stack) error {
|
||||
return s.RotN(1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Rot0",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.RotN(0)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Swap1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.SwapN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {4}, {3}},
|
||||
},
|
||||
{
|
||||
"Swap2",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.SwapN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{3}, {4}, {1}, {2}},
|
||||
},
|
||||
{
|
||||
"Swap too little",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.SwapN(1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Swap0",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.SwapN(0)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Over1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.OverN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}, {3}},
|
||||
},
|
||||
{
|
||||
"Over2",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.OverN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}, {1}, {2}},
|
||||
},
|
||||
{
|
||||
"Over too little",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.OverN(1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Over0",
|
||||
[][]byte{{1}, {2}, {3}},
|
||||
func(s *stack) error {
|
||||
return s.OverN(0)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Pick1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.PickN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}, {3}},
|
||||
},
|
||||
{
|
||||
"Pick2",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.PickN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {3}, {4}, {2}},
|
||||
},
|
||||
{
|
||||
"Pick too little",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.PickN(1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Roll1",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.RollN(1)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {2}, {4}, {3}},
|
||||
},
|
||||
{
|
||||
"Roll2",
|
||||
[][]byte{{1}, {2}, {3}, {4}},
|
||||
func(s *stack) error {
|
||||
return s.RollN(2)
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}, {3}, {4}, {2}},
|
||||
},
|
||||
{
|
||||
"Roll too little",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
return s.RollN(1)
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"Peek bool",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
// Peek bool is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
val, err := s.PeekBool(0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !val {
|
||||
return errors.New("invalid result")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}},
|
||||
},
|
||||
{
|
||||
"Peek bool 2",
|
||||
[][]byte{nil},
|
||||
func(s *stack) error {
|
||||
// Peek bool is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
val, err := s.PeekBool(0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val {
|
||||
return errors.New("invalid result")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{nil},
|
||||
},
|
||||
{
|
||||
"Peek int",
|
||||
[][]byte{{1}},
|
||||
func(s *stack) error {
|
||||
// Peek int is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
val, err := s.PeekInt(0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val != 1 {
|
||||
return errors.New("invalid result")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{1}},
|
||||
},
|
||||
{
|
||||
"Peek int 2",
|
||||
[][]byte{{0}},
|
||||
func(s *stack) error {
|
||||
// Peek int is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
val, err := s.PeekInt(0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val != 0 {
|
||||
return errors.New("invalid result")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
[][]byte{{0}},
|
||||
},
|
||||
{
|
||||
"pop int",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
s.PushInt(scriptNum(1))
|
||||
// Peek int is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
val, err := s.PopInt()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if val != 1 {
|
||||
return errors.New("invalid result")
|
||||
}
|
||||
return nil
|
||||
},
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"pop empty",
|
||||
nil,
|
||||
func(s *stack) error {
|
||||
// Peek int is otherwise pretty well tested,
|
||||
// just check it works.
|
||||
_, err := s.PopInt()
|
||||
return err
|
||||
},
|
||||
scriptError(ErrInvalidStackOperation, ""),
|
||||
nil,
|
||||
},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
// Setup the initial stack state and perform the test operation.
|
||||
s := stack{}
|
||||
for i := range test.before {
|
||||
s.PushByteArray(test.before[i])
|
||||
}
|
||||
err := test.operation(&s)
|
||||
|
||||
// Ensure the error code is of the expected type and the error
|
||||
// code matches the value specified in the test instance.
|
||||
if e := tstCheckScriptError(err, test.err); e != nil {
|
||||
t.Errorf("%s: %v", test.name, e)
|
||||
continue
|
||||
}
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
|
||||
// Ensure the resulting stack is the expected length.
|
||||
if int32(len(test.after)) != s.Depth() {
|
||||
t.Errorf("%s: stack depth doesn't match expected: %v "+
|
||||
"vs %v", test.name, len(test.after),
|
||||
s.Depth())
|
||||
continue
|
||||
}
|
||||
|
||||
// Ensure all items of the resulting stack are the expected
|
||||
// values.
|
||||
for i := range test.after {
|
||||
val, err := s.PeekByteArray(s.Depth() - int32(i) - 1)
|
||||
if err != nil {
|
||||
t.Errorf("%s: can't peek %dth stack entry: %v",
|
||||
test.name, i, err)
|
||||
break
|
||||
}
|
||||
|
||||
if !bytes.Equal(val, test.after[i]) {
|
||||
t.Errorf("%s: %dth stack entry doesn't match "+
|
||||
"expected: %v vs %v", test.name, i, val,
|
||||
test.after[i])
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
+692
@@ -0,0 +1,692 @@
|
||||
// Copyright (c) 2013-2017 The btcsuite developers
|
||||
// Use of this source code is governed by an ISC
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package txscript
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/btcsuite/btcutil"
|
||||
)
|
||||
|
||||
const (
|
||||
// MaxDataCarrierSize is the maximum number of bytes allowed in pushed
|
||||
// data to be considered a nulldata transaction
|
||||
MaxDataCarrierSize = 80
|
||||
|
||||
// StandardVerifyFlags are the script flags which are used when
|
||||
// executing transaction scripts to enforce additional checks which
|
||||
// are required for the script to be considered standard. These checks
|
||||
// help reduce issues related to transaction malleability as well as
|
||||
// allow pay-to-script hash transactions. Note these flags are
|
||||
// different than what is required for the consensus rules in that they
|
||||
// are more strict.
|
||||
//
|
||||
// TODO: This definition does not belong here. It belongs in a policy
|
||||
// package.
|
||||
StandardVerifyFlags = ScriptBip16 |
|
||||
ScriptVerifyDERSignatures |
|
||||
ScriptVerifyStrictEncoding |
|
||||
ScriptVerifyMinimalData |
|
||||
ScriptStrictMultiSig |
|
||||
ScriptDiscourageUpgradableNops |
|
||||
ScriptVerifyCleanStack |
|
||||
ScriptVerifyNullFail |
|
||||
ScriptVerifyCheckLockTimeVerify |
|
||||
ScriptVerifyCheckSequenceVerify |
|
||||
ScriptVerifyLowS |
|
||||
ScriptStrictMultiSig |
|
||||
ScriptVerifyWitness |
|
||||
ScriptVerifyDiscourageUpgradeableWitnessProgram |
|
||||
ScriptVerifyMinimalIf |
|
||||
ScriptVerifyWitnessPubKeyType
|
||||
)
|
||||
|
||||
// ScriptClass is an enumeration for the list of standard types of script.
|
||||
type ScriptClass byte
|
||||
|
||||
// Classes of script payment known about in the blockchain.
|
||||
const (
|
||||
NonStandardTy ScriptClass = iota // None of the recognized forms.
|
||||
PubKeyTy // Pay pubkey.
|
||||
PubKeyHashTy // Pay pubkey hash.
|
||||
WitnessV0PubKeyHashTy // Pay witness pubkey hash.
|
||||
ScriptHashTy // Pay to script hash.
|
||||
WitnessV0ScriptHashTy // Pay to witness script hash.
|
||||
MultiSigTy // Multi signature.
|
||||
NullDataTy // Empty data-only (provably prunable).
|
||||
)
|
||||
|
||||
// scriptClassToName houses the human-readable strings which describe each
|
||||
// script class.
|
||||
var scriptClassToName = []string{
|
||||
NonStandardTy: "nonstandard",
|
||||
PubKeyTy: "pubkey",
|
||||
PubKeyHashTy: "pubkeyhash",
|
||||
WitnessV0PubKeyHashTy: "witness_v0_keyhash",
|
||||
ScriptHashTy: "scripthash",
|
||||
WitnessV0ScriptHashTy: "witness_v0_scripthash",
|
||||
MultiSigTy: "multisig",
|
||||
NullDataTy: "nulldata",
|
||||
}
|
||||
|
||||
// String implements the Stringer interface by returning the name of
|
||||
// the enum script class. If the enum is invalid then "Invalid" will be
|
||||
// returned.
|
||||
func (t ScriptClass) String() string {
|
||||
if int(t) > len(scriptClassToName) || int(t) < 0 {
|
||||
return "Invalid"
|
||||
}
|
||||
return scriptClassToName[t]
|
||||
}
|
||||
|
||||
// isPubkey returns true if the script passed is a pay-to-pubkey transaction,
|
||||
// false otherwise.
|
||||
func isPubkey(pops []parsedOpcode) bool {
|
||||
// Valid pubkeys are either 33 or 65 bytes.
|
||||
return len(pops) == 2 &&
|
||||
(len(pops[0].data) == 33 || len(pops[0].data) == 65) &&
|
||||
pops[1].opcode.value == OP_CHECKSIG
|
||||
}
|
||||
|
||||
// isPubkeyHash returns true if the script passed is a pay-to-pubkey-hash
|
||||
// transaction, false otherwise.
|
||||
func isPubkeyHash(pops []parsedOpcode) bool {
|
||||
return len(pops) == 5 &&
|
||||
pops[0].opcode.value == OP_DUP &&
|
||||
pops[1].opcode.value == OP_HASH160 &&
|
||||
pops[2].opcode.value == OP_DATA_20 &&
|
||||
pops[3].opcode.value == OP_EQUALVERIFY &&
|
||||
pops[4].opcode.value == OP_CHECKSIG
|
||||
|
||||
}
|
||||
|
||||
// isMultiSig returns true if the passed script is a multisig transaction, false
|
||||
// otherwise.
|
||||
func isMultiSig(pops []parsedOpcode) bool {
|
||||
// The absolute minimum is 1 pubkey:
|
||||
// OP_0/OP_1-16 <pubkey> OP_1 OP_CHECKMULTISIG
|
||||
l := len(pops)
|
||||
if l < 4 {
|
||||
return false
|
||||
}
|
||||
if !isSmallInt(pops[0].opcode) {
|
||||
return false
|
||||
}
|
||||
if !isSmallInt(pops[l-2].opcode) {
|
||||
return false
|
||||
}
|
||||
if pops[l-1].opcode.value != OP_CHECKMULTISIG {
|
||||
return false
|
||||
}
|
||||
|
||||
// Verify the number of pubkeys specified matches the actual number
|
||||
// of pubkeys provided.
|
||||
if l-2-1 != asSmallInt(pops[l-2].opcode) {
|
||||
return false
|
||||
}
|
||||
|
||||
for _, pop := range pops[1 : l-2] {
|
||||
// Valid pubkeys are either 33 or 65 bytes.
|
||||
if len(pop.data) != 33 && len(pop.data) != 65 {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// isNullData returns true if the passed script is a null data transaction,
|
||||
// false otherwise.
|
||||
func isNullData(pops []parsedOpcode) bool {
|
||||
// A nulldata transaction is either a single OP_RETURN or an
|
||||
// OP_RETURN SMALLDATA (where SMALLDATA is a data push up to
|
||||
// MaxDataCarrierSize bytes).
|
||||
l := len(pops)
|
||||
if l == 1 && pops[0].opcode.value == OP_RETURN {
|
||||
return true
|
||||
}
|
||||
|
||||
return l == 2 &&
|
||||
pops[0].opcode.value == OP_RETURN &&
|
||||
(isSmallInt(pops[1].opcode) || pops[1].opcode.value <=
|
||||
OP_PUSHDATA4) &&
|
||||
len(pops[1].data) <= MaxDataCarrierSize
|
||||
}
|
||||
|
||||
// scriptType returns the type of the script being inspected from the known
|
||||
// standard types.
|
||||
func typeOfScript(pops []parsedOpcode) ScriptClass {
|
||||
if isPubkey(pops) {
|
||||
return PubKeyTy
|
||||
} else if isPubkeyHash(pops) {
|
||||
return PubKeyHashTy
|
||||
} else if isWitnessPubKeyHash(pops) {
|
||||
return WitnessV0PubKeyHashTy
|
||||
} else if isScriptHash(pops) {
|
||||
return ScriptHashTy
|
||||
} else if isWitnessScriptHash(pops) {
|
||||
return WitnessV0ScriptHashTy
|
||||
} else if isMultiSig(pops) {
|
||||
return MultiSigTy
|
||||
} else if isNullData(pops) {
|
||||
return NullDataTy
|
||||
}
|
||||
return NonStandardTy
|
||||
}
|
||||
|
||||
// GetScriptClass returns the class of the script passed.
|
||||
//
|
||||
// NonStandardTy will be returned when the script does not parse.
|
||||
func GetScriptClass(script []byte) ScriptClass {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return NonStandardTy
|
||||
}
|
||||
return typeOfScript(pops)
|
||||
}
|
||||
|
||||
// expectedInputs returns the number of arguments required by a script.
|
||||
// If the script is of unknown type such that the number can not be determined
|
||||
// then -1 is returned. We are an internal function and thus assume that class
|
||||
// is the real class of pops (and we can thus assume things that were determined
|
||||
// while finding out the type).
|
||||
func expectedInputs(pops []parsedOpcode, class ScriptClass) int {
|
||||
switch class {
|
||||
case PubKeyTy:
|
||||
return 1
|
||||
|
||||
case PubKeyHashTy:
|
||||
return 2
|
||||
|
||||
case WitnessV0PubKeyHashTy:
|
||||
return 2
|
||||
|
||||
case ScriptHashTy:
|
||||
// Not including script. That is handled by the caller.
|
||||
return 1
|
||||
|
||||
case WitnessV0ScriptHashTy:
|
||||
// Not including script. That is handled by the caller.
|
||||
return 1
|
||||
|
||||
case MultiSigTy:
|
||||
// Standard multisig has a push a small number for the number
|
||||
// of sigs and number of keys. Check the first push instruction
|
||||
// to see how many arguments are expected. typeOfScript already
|
||||
// checked this so we know it'll be a small int. Also, due to
|
||||
// the original bitcoind bug where OP_CHECKMULTISIG pops an
|
||||
// additional item from the stack, add an extra expected input
|
||||
// for the extra push that is required to compensate.
|
||||
return asSmallInt(pops[0].opcode) + 1
|
||||
|
||||
case NullDataTy:
|
||||
fallthrough
|
||||
default:
|
||||
return -1
|
||||
}
|
||||
}
|
||||
|
||||
// ScriptInfo houses information about a script pair that is determined by
|
||||
// CalcScriptInfo.
|
||||
type ScriptInfo struct {
|
||||
// PkScriptClass is the class of the public key script and is equivalent
|
||||
// to calling GetScriptClass on it.
|
||||
PkScriptClass ScriptClass
|
||||
|
||||
// NumInputs is the number of inputs provided by the public key script.
|
||||
NumInputs int
|
||||
|
||||
// ExpectedInputs is the number of outputs required by the signature
|
||||
// script and any pay-to-script-hash scripts. The number will be -1 if
|
||||
// unknown.
|
||||
ExpectedInputs int
|
||||
|
||||
// SigOps is the number of signature operations in the script pair.
|
||||
SigOps int
|
||||
}
|
||||
|
||||
// CalcScriptInfo returns a structure providing data about the provided script
|
||||
// pair. It will error if the pair is in someway invalid such that they can not
|
||||
// be analysed, i.e. if they do not parse or the pkScript is not a push-only
|
||||
// script
|
||||
func CalcScriptInfo(sigScript, pkScript []byte, witness wire.TxWitness,
|
||||
bip16, segwit bool) (*ScriptInfo, error) {
|
||||
|
||||
sigPops, err := parseScript(sigScript)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
pkPops, err := parseScript(pkScript)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Push only sigScript makes little sense.
|
||||
si := new(ScriptInfo)
|
||||
si.PkScriptClass = typeOfScript(pkPops)
|
||||
|
||||
// Can't have a signature script that doesn't just push data.
|
||||
if !isPushOnly(sigPops) {
|
||||
return nil, scriptError(ErrNotPushOnly,
|
||||
"signature script is not push only")
|
||||
}
|
||||
|
||||
si.ExpectedInputs = expectedInputs(pkPops, si.PkScriptClass)
|
||||
|
||||
switch {
|
||||
// Count sigops taking into account pay-to-script-hash.
|
||||
case si.PkScriptClass == ScriptHashTy && bip16 && !segwit:
|
||||
// The pay-to-hash-script is the final data push of the
|
||||
// signature script.
|
||||
script := sigPops[len(sigPops)-1].data
|
||||
shPops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
shInputs := expectedInputs(shPops, typeOfScript(shPops))
|
||||
if shInputs == -1 {
|
||||
si.ExpectedInputs = -1
|
||||
} else {
|
||||
si.ExpectedInputs += shInputs
|
||||
}
|
||||
si.SigOps = getSigOpCount(shPops, true)
|
||||
|
||||
// All entries pushed to stack (or are OP_RESERVED and exec
|
||||
// will fail).
|
||||
si.NumInputs = len(sigPops)
|
||||
|
||||
// If segwit is active, and this is a regular p2wkh output, then we'll
|
||||
// treat the script as a p2pkh output in essence.
|
||||
case si.PkScriptClass == WitnessV0PubKeyHashTy && segwit:
|
||||
|
||||
si.SigOps = GetWitnessSigOpCount(sigScript, pkScript, witness)
|
||||
si.NumInputs = len(witness)
|
||||
|
||||
// We'll attempt to detect the nested p2sh case so we can accurately
|
||||
// count the signature operations involved.
|
||||
case si.PkScriptClass == ScriptHashTy &&
|
||||
IsWitnessProgram(sigScript[1:]) && bip16 && segwit:
|
||||
|
||||
// Extract the pushed witness program from the sigScript so we
|
||||
// can determine the number of expected inputs.
|
||||
pkPops, _ := parseScript(sigScript[1:])
|
||||
shInputs := expectedInputs(pkPops, typeOfScript(pkPops))
|
||||
if shInputs == -1 {
|
||||
si.ExpectedInputs = -1
|
||||
} else {
|
||||
si.ExpectedInputs += shInputs
|
||||
}
|
||||
|
||||
si.SigOps = GetWitnessSigOpCount(sigScript, pkScript, witness)
|
||||
|
||||
si.NumInputs = len(witness)
|
||||
si.NumInputs += len(sigPops)
|
||||
|
||||
// If segwit is active, and this is a p2wsh output, then we'll need to
|
||||
// examine the witness script to generate accurate script info.
|
||||
case si.PkScriptClass == WitnessV0ScriptHashTy && segwit:
|
||||
// The witness script is the final element of the witness
|
||||
// stack.
|
||||
witnessScript := witness[len(witness)-1]
|
||||
pops, _ := parseScript(witnessScript)
|
||||
|
||||
shInputs := expectedInputs(pops, typeOfScript(pops))
|
||||
if shInputs == -1 {
|
||||
si.ExpectedInputs = -1
|
||||
} else {
|
||||
si.ExpectedInputs += shInputs
|
||||
}
|
||||
|
||||
si.SigOps = GetWitnessSigOpCount(sigScript, pkScript, witness)
|
||||
si.NumInputs = len(witness)
|
||||
|
||||
default:
|
||||
si.SigOps = getSigOpCount(pkPops, true)
|
||||
|
||||
// All entries pushed to stack (or are OP_RESERVED and exec
|
||||
// will fail).
|
||||
si.NumInputs = len(sigPops)
|
||||
}
|
||||
|
||||
return si, nil
|
||||
}
|
||||
|
||||
// CalcMultiSigStats returns the number of public keys and signatures from
|
||||
// a multi-signature transaction script. The passed script MUST already be
|
||||
// known to be a multi-signature script.
|
||||
func CalcMultiSigStats(script []byte) (int, int, error) {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
|
||||
// A multi-signature script is of the pattern:
|
||||
// NUM_SIGS PUBKEY PUBKEY PUBKEY... NUM_PUBKEYS OP_CHECKMULTISIG
|
||||
// Therefore the number of signatures is the oldest item on the stack
|
||||
// and the number of pubkeys is the 2nd to last. Also, the absolute
|
||||
// minimum for a multi-signature script is 1 pubkey, so at least 4
|
||||
// items must be on the stack per:
|
||||
// OP_1 PUBKEY OP_1 OP_CHECKMULTISIG
|
||||
if len(pops) < 4 {
|
||||
str := fmt.Sprintf("script %x is not a multisig script", script)
|
||||
return 0, 0, scriptError(ErrNotMultisigScript, str)
|
||||
}
|
||||
|
||||
numSigs := asSmallInt(pops[0].opcode)
|
||||
numPubKeys := asSmallInt(pops[len(pops)-2].opcode)
|
||||
return numPubKeys, numSigs, nil
|
||||
}
|
||||
|
||||
// payToPubKeyHashScript creates a new script to pay a transaction
|
||||
// output to a 20-byte pubkey hash. It is expected that the input is a valid
|
||||
// hash.
|
||||
func payToPubKeyHashScript(pubKeyHash []byte) ([]byte, error) {
|
||||
return NewScriptBuilder().AddOp(OP_DUP).AddOp(OP_HASH160).
|
||||
AddData(pubKeyHash).AddOp(OP_EQUALVERIFY).AddOp(OP_CHECKSIG).
|
||||
Script()
|
||||
}
|
||||
|
||||
// payToWitnessPubKeyHashScript creates a new script to pay to a version 0
|
||||
// pubkey hash witness program. The passed hash is expected to be valid.
|
||||
func payToWitnessPubKeyHashScript(pubKeyHash []byte) ([]byte, error) {
|
||||
return NewScriptBuilder().AddOp(OP_0).AddData(pubKeyHash).Script()
|
||||
}
|
||||
|
||||
// payToScriptHashScript creates a new script to pay a transaction output to a
|
||||
// script hash. It is expected that the input is a valid hash.
|
||||
func payToScriptHashScript(scriptHash []byte) ([]byte, error) {
|
||||
return NewScriptBuilder().AddOp(OP_HASH160).AddData(scriptHash).
|
||||
AddOp(OP_EQUAL).Script()
|
||||
}
|
||||
|
||||
// payToWitnessPubKeyHashScript creates a new script to pay to a version 0
|
||||
// script hash witness program. The passed hash is expected to be valid.
|
||||
func payToWitnessScriptHashScript(scriptHash []byte) ([]byte, error) {
|
||||
return NewScriptBuilder().AddOp(OP_0).AddData(scriptHash).Script()
|
||||
}
|
||||
|
||||
// payToPubkeyScript creates a new script to pay a transaction output to a
|
||||
// public key. It is expected that the input is a valid pubkey.
|
||||
func payToPubKeyScript(serializedPubKey []byte) ([]byte, error) {
|
||||
return NewScriptBuilder().AddData(serializedPubKey).
|
||||
AddOp(OP_CHECKSIG).Script()
|
||||
}
|
||||
|
||||
// PayToAddrScript creates a new script to pay a transaction output to a the
|
||||
// specified address.
|
||||
func PayToAddrScript(addr btcutil.Address) ([]byte, error) {
|
||||
const nilAddrErrStr = "unable to generate payment script for nil address"
|
||||
|
||||
switch addr := addr.(type) {
|
||||
case *btcutil.AddressPubKeyHash:
|
||||
if addr == nil {
|
||||
return nil, scriptError(ErrUnsupportedAddress,
|
||||
nilAddrErrStr)
|
||||
}
|
||||
return payToPubKeyHashScript(addr.ScriptAddress())
|
||||
|
||||
case *btcutil.AddressScriptHash:
|
||||
if addr == nil {
|
||||
return nil, scriptError(ErrUnsupportedAddress,
|
||||
nilAddrErrStr)
|
||||
}
|
||||
return payToScriptHashScript(addr.ScriptAddress())
|
||||
|
||||
case *btcutil.AddressPubKey:
|
||||
if addr == nil {
|
||||
return nil, scriptError(ErrUnsupportedAddress,
|
||||
nilAddrErrStr)
|
||||
}
|
||||
return payToPubKeyScript(addr.ScriptAddress())
|
||||
|
||||
case *btcutil.AddressWitnessPubKeyHash:
|
||||
if addr == nil {
|
||||
return nil, scriptError(ErrUnsupportedAddress,
|
||||
nilAddrErrStr)
|
||||
}
|
||||
return payToWitnessPubKeyHashScript(addr.ScriptAddress())
|
||||
case *btcutil.AddressWitnessScriptHash:
|
||||
if addr == nil {
|
||||
return nil, scriptError(ErrUnsupportedAddress,
|
||||
nilAddrErrStr)
|
||||
}
|
||||
return payToWitnessScriptHashScript(addr.ScriptAddress())
|
||||
}
|
||||
|
||||
str := fmt.Sprintf("unable to generate payment script for unsupported "+
|
||||
"address type %T", addr)
|
||||
return nil, scriptError(ErrUnsupportedAddress, str)
|
||||
}
|
||||
|
||||
// NullDataScript creates a provably-prunable script containing OP_RETURN
|
||||
// followed by the passed data. An Error with the error code ErrTooMuchNullData
|
||||
// will be returned if the length of the passed data exceeds MaxDataCarrierSize.
|
||||
func NullDataScript(data []byte) ([]byte, error) {
|
||||
if len(data) > MaxDataCarrierSize {
|
||||
str := fmt.Sprintf("data size %d is larger than max "+
|
||||
"allowed size %d", len(data), MaxDataCarrierSize)
|
||||
return nil, scriptError(ErrTooMuchNullData, str)
|
||||
}
|
||||
|
||||
return NewScriptBuilder().AddOp(OP_RETURN).AddData(data).Script()
|
||||
}
|
||||
|
||||
// MultiSigScript returns a valid script for a multisignature redemption where
|
||||
// nrequired of the keys in pubkeys are required to have signed the transaction
|
||||
// for success. An Error with the error code ErrTooManyRequiredSigs will be
|
||||
// returned if nrequired is larger than the number of keys provided.
|
||||
func MultiSigScript(pubkeys []*btcutil.AddressPubKey, nrequired int) ([]byte, error) {
|
||||
if len(pubkeys) < nrequired {
|
||||
str := fmt.Sprintf("unable to generate multisig script with "+
|
||||
"%d required signatures when there are only %d public "+
|
||||
"keys available", nrequired, len(pubkeys))
|
||||
return nil, scriptError(ErrTooManyRequiredSigs, str)
|
||||
}
|
||||
|
||||
builder := NewScriptBuilder().AddInt64(int64(nrequired))
|
||||
for _, key := range pubkeys {
|
||||
builder.AddData(key.ScriptAddress())
|
||||
}
|
||||
builder.AddInt64(int64(len(pubkeys)))
|
||||
builder.AddOp(OP_CHECKMULTISIG)
|
||||
|
||||
return builder.Script()
|
||||
}
|
||||
|
||||
// PushedData returns an array of byte slices containing any pushed data found
|
||||
// in the passed script. This includes OP_0, but not OP_1 - OP_16.
|
||||
func PushedData(script []byte) ([][]byte, error) {
|
||||
pops, err := parseScript(script)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var data [][]byte
|
||||
for _, pop := range pops {
|
||||
if pop.data != nil {
|
||||
data = append(data, pop.data)
|
||||
} else if pop.opcode.value == OP_0 {
|
||||
data = append(data, nil)
|
||||
}
|
||||
}
|
||||
return data, nil
|
||||
}
|
||||
|
||||
// ExtractPkScriptAddrs returns the type of script, addresses and required
|
||||
// signatures associated with the passed PkScript. Note that it only works for
|
||||
// 'standard' transaction script types. Any data such as public keys which are
|
||||
// invalid are omitted from the results.
|
||||
func ExtractPkScriptAddrs(pkScript []byte, chainParams *chaincfg.Params) (ScriptClass, []btcutil.Address, int, error) {
|
||||
var addrs []btcutil.Address
|
||||
var requiredSigs int
|
||||
|
||||
// No valid addresses or required signatures if the script doesn't
|
||||
// parse.
|
||||
pops, err := parseScript(pkScript)
|
||||
if err != nil {
|
||||
return NonStandardTy, nil, 0, err
|
||||
}
|
||||
|
||||
scriptClass := typeOfScript(pops)
|
||||
switch scriptClass {
|
||||
case PubKeyHashTy:
|
||||
// A pay-to-pubkey-hash script is of the form:
|
||||
// OP_DUP OP_HASH160 <hash> OP_EQUALVERIFY OP_CHECKSIG
|
||||
// Therefore the pubkey hash is the 3rd item on the stack.
|
||||
// Skip the pubkey hash if it's invalid for some reason.
|
||||
requiredSigs = 1
|
||||
addr, err := btcutil.NewAddressPubKeyHash(pops[2].data,
|
||||
chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
|
||||
case WitnessV0PubKeyHashTy:
|
||||
// A pay-to-witness-pubkey-hash script is of thw form:
|
||||
// OP_0 <20-byte hash>
|
||||
// Therefore, the pubkey hash is the second item on the stack.
|
||||
// Skip the pubkey hash if it's invalid for some reason.
|
||||
requiredSigs = 1
|
||||
addr, err := btcutil.NewAddressWitnessPubKeyHash(pops[1].data,
|
||||
chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
|
||||
case PubKeyTy:
|
||||
// A pay-to-pubkey script is of the form:
|
||||
// <pubkey> OP_CHECKSIG
|
||||
// Therefore the pubkey is the first item on the stack.
|
||||
// Skip the pubkey if it's invalid for some reason.
|
||||
requiredSigs = 1
|
||||
addr, err := btcutil.NewAddressPubKey(pops[0].data, chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
|
||||
case ScriptHashTy:
|
||||
// A pay-to-script-hash script is of the form:
|
||||
// OP_HASH160 <scripthash> OP_EQUAL
|
||||
// Therefore the script hash is the 2nd item on the stack.
|
||||
// Skip the script hash if it's invalid for some reason.
|
||||
requiredSigs = 1
|
||||
addr, err := btcutil.NewAddressScriptHashFromHash(pops[1].data,
|
||||
chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
|
||||
case WitnessV0ScriptHashTy:
|
||||
// A pay-to-witness-script-hash script is of the form:
|
||||
// OP_0 <32-byte hash>
|
||||
// Therefore, the script hash is the second item on the stack.
|
||||
// Skip the script hash if it's invalid for some reason.
|
||||
requiredSigs = 1
|
||||
addr, err := btcutil.NewAddressWitnessScriptHash(pops[1].data,
|
||||
chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
|
||||
case MultiSigTy:
|
||||
// A multi-signature script is of the form:
|
||||
// <numsigs> <pubkey> <pubkey> <pubkey>... <numpubkeys> OP_CHECKMULTISIG
|
||||
// Therefore the number of required signatures is the 1st item
|
||||
// on the stack and the number of public keys is the 2nd to last
|
||||
// item on the stack.
|
||||
requiredSigs = asSmallInt(pops[0].opcode)
|
||||
numPubKeys := asSmallInt(pops[len(pops)-2].opcode)
|
||||
|
||||
// Extract the public keys while skipping any that are invalid.
|
||||
addrs = make([]btcutil.Address, 0, numPubKeys)
|
||||
for i := 0; i < numPubKeys; i++ {
|
||||
addr, err := btcutil.NewAddressPubKey(pops[i+1].data,
|
||||
chainParams)
|
||||
if err == nil {
|
||||
addrs = append(addrs, addr)
|
||||
}
|
||||
}
|
||||
|
||||
case NullDataTy:
|
||||
// Null data transactions have no addresses or required
|
||||
// signatures.
|
||||
|
||||
case NonStandardTy:
|
||||
// Don't attempt to extract addresses or required signatures for
|
||||
// nonstandard transactions.
|
||||
}
|
||||
|
||||
return scriptClass, addrs, requiredSigs, nil
|
||||
}
|
||||
|
||||
// AtomicSwapDataPushes houses the data pushes found in atomic swap contracts.
|
||||
type AtomicSwapDataPushes struct {
|
||||
RecipientHash160 [20]byte
|
||||
RefundHash160 [20]byte
|
||||
SecretHash [32]byte
|
||||
LockTime int64
|
||||
}
|
||||
|
||||
// ExtractAtomicSwapDataPushes returns the data pushes from an atomic swap
|
||||
// contract. If the script is not an atomic swap contract,
|
||||
// ExtractAtomicSwapDataPushes returns (nil, nil). Non-nil errors are returned
|
||||
// for unparsable scripts.
|
||||
//
|
||||
// NOTE: Atomic swaps are not considered standard script types by the dcrd
|
||||
// mempool policy and should be used with P2SH. The atomic swap format is also
|
||||
// expected to change to use a more secure hash function in the future.
|
||||
//
|
||||
// This function is only defined in the txscript package due to API limitations
|
||||
// which prevent callers using txscript to parse nonstandard scripts.
|
||||
func ExtractAtomicSwapDataPushes(pkScript []byte) (*AtomicSwapDataPushes, error) {
|
||||
pops, err := parseScript(pkScript)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(pops) != 17 {
|
||||
return nil, nil
|
||||
}
|
||||
isAtomicSwap := pops[0].opcode.value == OP_IF &&
|
||||
pops[1].opcode.value == OP_SHA256 &&
|
||||
pops[2].opcode.value == OP_DATA_32 &&
|
||||
pops[3].opcode.value == OP_EQUALVERIFY &&
|
||||
pops[4].opcode.value == OP_DUP &&
|
||||
pops[5].opcode.value == OP_HASH160 &&
|
||||
pops[6].opcode.value == OP_DATA_20 &&
|
||||
pops[7].opcode.value == OP_ELSE &&
|
||||
canonicalPush(pops[8]) &&
|
||||
pops[9].opcode.value == OP_CHECKLOCKTIMEVERIFY &&
|
||||
pops[10].opcode.value == OP_DROP &&
|
||||
pops[11].opcode.value == OP_DUP &&
|
||||
pops[12].opcode.value == OP_HASH160 &&
|
||||
pops[13].opcode.value == OP_DATA_20 &&
|
||||
pops[14].opcode.value == OP_ENDIF &&
|
||||
pops[15].opcode.value == OP_EQUALVERIFY &&
|
||||
pops[16].opcode.value == OP_CHECKSIG
|
||||
if !isAtomicSwap {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
pushes := new(AtomicSwapDataPushes)
|
||||
copy(pushes.SecretHash[:], pops[2].data)
|
||||
copy(pushes.RecipientHash160[:], pops[6].data)
|
||||
copy(pushes.RefundHash160[:], pops[13].data)
|
||||
if pops[8].data != nil {
|
||||
locktime, err := makeScriptNum(pops[8].data, true, 5)
|
||||
if err != nil {
|
||||
return nil, nil
|
||||
}
|
||||
pushes.LockTime = int64(locktime)
|
||||
} else if op := pops[8].opcode; isSmallInt(op) {
|
||||
pushes.LockTime = int64(asSmallInt(op))
|
||||
} else {
|
||||
return nil, nil
|
||||
}
|
||||
return pushes, nil
|
||||
}
|
||||
+1215
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user