37dd9086ec
This commit solves several issues concerning the genesis block: * Genesis/ChainConfig loading was handled by cmd/geth code. This left library users in the cold. They could specify a JSON-encoded string and overwrite the config, but didn't get any of the additional checks performed by geth. * Decoding and writing of genesis JSON was conflated in WriteGenesisBlock. This made it a lot harder to embed the genesis block into the forthcoming config file loader. This commit changes things so there is a single Genesis type that represents genesis blocks. All uses of Write*Genesis* are changed to use the new type instead. * If the chain config supplied by the user was incompatible with the current chain (i.e. the chain had already advanced beyond a scheduled fork), it got overwritten. This is not an issue in practice because previous forks have always had the highest total difficulty. It might matter in the future though. The new code reverts the local chain to the point of the fork when upgrading configuration. The change to genesis block data removes compression library dependencies from package core.
307 lines
11 KiB
Go
307 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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"context"
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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/pow"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/trie"
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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(pow.FakePow)
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sdb, _ = ethdb.NewMemDatabase()
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ldb, _ = ethdb.NewMemDatabase()
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gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}}
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genesis = gspec.MustCommit(sdb)
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)
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gspec.MustCommit(ldb)
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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, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
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defer cancel()
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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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