forked from cerc-io/plugeth
5c8fe28b72
* common: remove CurrencyToString Move denomination values to params instead. * common: delete dead code * common: move big integer operations to common/math This commit consolidates all big integer operations into common/math and adds tests and documentation. There should be no change in semantics for BigPow, BigMin, BigMax, S256, U256, Exp and their behaviour is now locked in by tests. The BigD, BytesToBig and Bytes2Big functions don't provide additional value, all uses are replaced by new(big.Int).SetBytes(). BigToBytes is now called PaddedBigBytes, its minimum output size parameter is now specified as the number of bytes instead of bits. The single use of this function is in the EVM's MSTORE instruction. Big and String2Big are replaced by ParseBig, which is slightly stricter. It previously accepted leading zeros for hexadecimal inputs but treated decimal inputs as octal if a leading zero digit was present. ParseUint64 is used in places where String2Big was used to decode a uint64. The new functions MustParseBig and MustParseUint64 are now used in many places where parsing errors were previously ignored. * common: delete unused big integer variables * accounts/abi: replace uses of BytesToBig with use of encoding/binary * common: remove BytesToBig * common: remove Bytes2Big * common: remove BigTrue * cmd/utils: add BigFlag and use it for error-checked integer flags While here, remove environment variable processing for DirectoryFlag because we don't use it. * core: add missing error checks in genesis block parser * common: remove String2Big * cmd/evm: use utils.BigFlag * common/math: check for 256 bit overflow in ParseBig This is supposed to prevent silent overflow/truncation of values in the genesis block JSON. Without this check, a genesis block that set a balance larger than 256 bits would lead to weird behaviour in the VM. * cmd/utils: fixup import
302 lines
11 KiB
Go
302 lines
11 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package light
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import (
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"bytes"
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"errors"
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/trie"
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"golang.org/x/net/context"
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)
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var (
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testBankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey)
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testBankFunds = big.NewInt(100000000)
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acc1Key, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
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acc2Key, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
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acc1Addr = crypto.PubkeyToAddress(acc1Key.PublicKey)
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acc2Addr = crypto.PubkeyToAddress(acc2Key.PublicKey)
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testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056")
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testContractAddr common.Address
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bigTxGas = new(big.Int).SetUint64(params.TxGas)
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)
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type testOdr struct {
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OdrBackend
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sdb, ldb ethdb.Database
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disable bool
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}
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func (odr *testOdr) Database() ethdb.Database {
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return odr.ldb
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}
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var ErrOdrDisabled = errors.New("ODR disabled")
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func (odr *testOdr) Retrieve(ctx context.Context, req OdrRequest) error {
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if odr.disable {
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return ErrOdrDisabled
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}
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switch req := req.(type) {
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case *BlockRequest:
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req.Rlp = core.GetBodyRLP(odr.sdb, req.Hash, core.GetBlockNumber(odr.sdb, req.Hash))
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case *ReceiptsRequest:
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req.Receipts = core.GetBlockReceipts(odr.sdb, req.Hash, core.GetBlockNumber(odr.sdb, req.Hash))
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case *TrieRequest:
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t, _ := trie.New(req.Id.Root, odr.sdb)
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req.Proof = t.Prove(req.Key)
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case *CodeRequest:
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req.Data, _ = odr.sdb.Get(req.Hash[:])
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}
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req.StoreResult(odr.ldb)
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return nil
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}
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type odrTestFn func(ctx context.Context, db ethdb.Database, bc *core.BlockChain, lc *LightChain, bhash common.Hash) []byte
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func TestOdrGetBlockLes1(t *testing.T) { testChainOdr(t, 1, 1, odrGetBlock) }
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func odrGetBlock(ctx context.Context, db ethdb.Database, bc *core.BlockChain, lc *LightChain, bhash common.Hash) []byte {
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var block *types.Block
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if bc != nil {
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block = bc.GetBlockByHash(bhash)
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} else {
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block, _ = lc.GetBlockByHash(ctx, bhash)
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}
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if block == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(block)
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return rlp
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}
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func TestOdrGetReceiptsLes1(t *testing.T) { testChainOdr(t, 1, 1, odrGetReceipts) }
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func odrGetReceipts(ctx context.Context, db ethdb.Database, bc *core.BlockChain, lc *LightChain, bhash common.Hash) []byte {
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var receipts types.Receipts
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if bc != nil {
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receipts = core.GetBlockReceipts(db, bhash, core.GetBlockNumber(db, bhash))
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} else {
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receipts, _ = GetBlockReceipts(ctx, lc.Odr(), bhash, core.GetBlockNumber(db, bhash))
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}
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if receipts == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(receipts)
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return rlp
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}
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func TestOdrAccountsLes1(t *testing.T) { testChainOdr(t, 1, 1, odrAccounts) }
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func odrAccounts(ctx context.Context, db ethdb.Database, bc *core.BlockChain, lc *LightChain, bhash common.Hash) []byte {
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dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
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acc := []common.Address{testBankAddress, acc1Addr, acc2Addr, dummyAddr}
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var res []byte
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for _, addr := range acc {
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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st, err := state.New(header.Root, db)
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if err == nil {
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bal := st.GetBalance(addr)
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rlp, _ := rlp.EncodeToBytes(bal)
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res = append(res, rlp...)
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}
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} else {
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header := lc.GetHeaderByHash(bhash)
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st := NewLightState(StateTrieID(header), lc.Odr())
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bal, err := st.GetBalance(ctx, addr)
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if err == nil {
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rlp, _ := rlp.EncodeToBytes(bal)
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res = append(res, rlp...)
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}
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}
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}
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return res
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}
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func TestOdrContractCallLes1(t *testing.T) { testChainOdr(t, 1, 2, odrContractCall) }
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type callmsg struct {
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types.Message
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}
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func (callmsg) CheckNonce() bool { return false }
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func odrContractCall(ctx context.Context, db ethdb.Database, bc *core.BlockChain, lc *LightChain, bhash common.Hash) []byte {
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data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000")
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config := params.TestChainConfig
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var res []byte
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for i := 0; i < 3; i++ {
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data[35] = byte(i)
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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statedb, err := state.New(header.Root, db)
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if err == nil {
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from := statedb.GetOrNewStateObject(testBankAddress)
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from.SetBalance(math.MaxBig256)
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msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(1000000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, bc)
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vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
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gp := new(core.GasPool).AddGas(math.MaxBig256)
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ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
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res = append(res, ret...)
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}
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} else {
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header := lc.GetHeaderByHash(bhash)
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state := NewLightState(StateTrieID(header), lc.Odr())
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vmstate := NewVMState(ctx, state)
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from, err := state.GetOrNewStateObject(ctx, testBankAddress)
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if err == nil {
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from.SetBalance(math.MaxBig256)
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msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(1000000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, lc)
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vmenv := vm.NewEVM(context, vmstate, config, vm.Config{})
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gp := new(core.GasPool).AddGas(math.MaxBig256)
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ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
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if vmstate.Error() == nil {
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res = append(res, ret...)
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}
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}
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}
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}
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return res
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}
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func testChainGen(i int, block *core.BlockGen) {
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signer := types.HomesteadSigner{}
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switch i {
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case 0:
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// In block 1, the test bank sends account #1 some ether.
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tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), bigTxGas, nil, nil), signer, testBankKey)
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block.AddTx(tx)
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case 1:
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// In block 2, the test bank sends some more ether to account #1.
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// acc1Addr passes it on to account #2.
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// acc1Addr creates a test contract.
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tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, testBankKey)
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nonce := block.TxNonce(acc1Addr)
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tx2, _ := types.SignTx(types.NewTransaction(nonce, acc2Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, acc1Key)
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nonce++
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tx3, _ := types.SignTx(types.NewContractCreation(nonce, big.NewInt(0), big.NewInt(1000000), big.NewInt(0), testContractCode), signer, acc1Key)
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testContractAddr = crypto.CreateAddress(acc1Addr, nonce)
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block.AddTx(tx1)
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block.AddTx(tx2)
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block.AddTx(tx3)
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case 2:
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// Block 3 is empty but was mined by account #2.
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block.SetCoinbase(acc2Addr)
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block.SetExtra([]byte("yeehaw"))
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data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001")
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tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), big.NewInt(100000), nil, data), signer, testBankKey)
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block.AddTx(tx)
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case 3:
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// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
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b2 := block.PrevBlock(1).Header()
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b2.Extra = []byte("foo")
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block.AddUncle(b2)
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b3 := block.PrevBlock(2).Header()
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b3.Extra = []byte("foo")
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block.AddUncle(b3)
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data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002")
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tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), big.NewInt(100000), nil, data), signer, testBankKey)
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block.AddTx(tx)
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}
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}
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func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
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var (
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evmux = new(event.TypeMux)
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pow = new(core.FakePow)
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sdb, _ = ethdb.NewMemDatabase()
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ldb, _ = ethdb.NewMemDatabase()
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genesis = core.WriteGenesisBlockForTesting(sdb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds})
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)
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core.WriteGenesisBlockForTesting(ldb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds})
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// Assemble the test environment
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blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{})
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chainConfig := ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}
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gchain, _ := core.GenerateChain(chainConfig, genesis, sdb, 4, testChainGen)
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if _, err := blockchain.InsertChain(gchain); err != nil {
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panic(err)
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}
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odr := &testOdr{sdb: sdb, ldb: ldb}
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lightchain, _ := NewLightChain(odr, testChainConfig(), pow, evmux)
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lightchain.SetValidator(bproc{})
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headers := make([]*types.Header, len(gchain))
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for i, block := range gchain {
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headers[i] = block.Header()
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}
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if _, err := lightchain.InsertHeaderChain(headers, 1); err != nil {
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panic(err)
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}
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test := func(expFail uint64) {
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for i := uint64(0); i <= blockchain.CurrentHeader().Number.Uint64(); i++ {
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bhash := core.GetCanonicalHash(sdb, i)
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b1 := fn(NoOdr, sdb, blockchain, nil, bhash)
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ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond)
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b2 := fn(ctx, ldb, nil, lightchain, bhash)
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eq := bytes.Equal(b1, b2)
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exp := i < expFail
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if exp && !eq {
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t.Errorf("odr mismatch")
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}
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if !exp && eq {
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t.Errorf("unexpected odr match")
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}
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}
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}
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odr.disable = true
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// expect retrievals to fail (except genesis block) without a les peer
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test(expFail)
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odr.disable = false
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// expect all retrievals to pass
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test(5)
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odr.disable = true
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// still expect all retrievals to pass, now data should be cached locally
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test(5)
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}
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