Official Go implementation of the Ethereum protocol
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go-ethereum/les/odr_test.go

242 lines
8.4 KiB

// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package les
import (
"bytes"
"context"
"math/big"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
common: move big integer math to common/math (#3699) * 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
8 years ago
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
)
type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte
func TestOdrGetBlockLes2(t *testing.T) { testOdr(t, 2, 1, true, odrGetBlock) }
func TestOdrGetBlockLes3(t *testing.T) { testOdr(t, 3, 1, true, odrGetBlock) }
func odrGetBlock(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
var block *types.Block
if bc != nil {
block = bc.GetBlockByHash(bhash)
} else {
block, _ = lc.GetBlockByHash(ctx, bhash)
}
if block == nil {
return nil
}
rlp, _ := rlp.EncodeToBytes(block)
return rlp
}
func TestOdrGetReceiptsLes2(t *testing.T) { testOdr(t, 2, 1, true, odrGetReceipts) }
func TestOdrGetReceiptsLes3(t *testing.T) { testOdr(t, 3, 1, true, odrGetReceipts) }
func odrGetReceipts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
var receipts types.Receipts
if bc != nil {
if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
receipts = rawdb.ReadReceipts(db, bhash, *number, config)
}
} else {
if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
receipts, _ = light.GetBlockReceipts(ctx, lc.Odr(), bhash, *number)
}
}
if receipts == nil {
return nil
}
rlp, _ := rlp.EncodeToBytes(receipts)
return rlp
}
func TestOdrAccountsLes2(t *testing.T) { testOdr(t, 2, 1, true, odrAccounts) }
func TestOdrAccountsLes3(t *testing.T) { testOdr(t, 3, 1, true, odrAccounts) }
func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
acc := []common.Address{bankAddr, userAddr1, userAddr2, dummyAddr}
var (
res []byte
st *state.StateDB
err error
)
for _, addr := range acc {
if bc != nil {
header := bc.GetHeaderByHash(bhash)
st, err = state.New(header.Root, state.NewDatabase(db), nil)
} else {
header := lc.GetHeaderByHash(bhash)
st = light.NewState(ctx, header, lc.Odr())
}
if err == nil {
bal := st.GetBalance(addr)
rlp, _ := rlp.EncodeToBytes(bal)
res = append(res, rlp...)
}
}
return res
}
func TestOdrContractCallLes2(t *testing.T) { testOdr(t, 2, 2, true, odrContractCall) }
func TestOdrContractCallLes3(t *testing.T) { testOdr(t, 3, 2, true, odrContractCall) }
type callmsg struct {
types.Message
}
func (callmsg) CheckNonce() bool { return false }
func odrContractCall(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000")
var res []byte
for i := 0; i < 3; i++ {
data[35] = byte(i)
if bc != nil {
header := bc.GetHeaderByHash(bhash)
statedb, err := state.New(header.Root, state.NewDatabase(db), nil)
if err == nil {
from := statedb.GetOrNewStateObject(bankAddr)
common: move big integer math to common/math (#3699) * 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
8 years ago
from.SetBalance(math.MaxBig256)
msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)}
context := core.NewEVMContext(msg, header, bc, nil)
vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
//vmenv := core.NewEnv(statedb, config, bc, msg, header, vm.Config{})
gp := new(core.GasPool).AddGas(math.MaxUint64)
ret, _, _, _ := core.ApplyMessage(vmenv, msg, gp)
res = append(res, ret...)
}
} else {
header := lc.GetHeaderByHash(bhash)
state := light.NewState(ctx, header, lc.Odr())
state.SetBalance(bankAddr, math.MaxBig256)
msg := callmsg{types.NewMessage(bankAddr, &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)}
context := core.NewEVMContext(msg, header, lc, nil)
vmenv := vm.NewEVM(context, state, config, vm.Config{})
gp := new(core.GasPool).AddGas(math.MaxUint64)
ret, _, _, _ := core.ApplyMessage(vmenv, msg, gp)
if state.Error() == nil {
res = append(res, ret...)
}
}
}
return res
}
func TestOdrTxStatusLes2(t *testing.T) { testOdr(t, 2, 1, false, odrTxStatus) }
func TestOdrTxStatusLes3(t *testing.T) { testOdr(t, 3, 1, false, odrTxStatus) }
func odrTxStatus(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
var txs types.Transactions
if bc != nil {
block := bc.GetBlockByHash(bhash)
txs = block.Transactions()
} else {
if block, _ := lc.GetBlockByHash(ctx, bhash); block != nil {
btxs := block.Transactions()
txs = make(types.Transactions, len(btxs))
for i, tx := range btxs {
var err error
txs[i], _, _, _, err = light.GetTransaction(ctx, lc.Odr(), tx.Hash())
if err != nil {
return nil
}
}
}
}
rlp, _ := rlp.EncodeToBytes(txs)
return rlp
}
// testOdr tests odr requests whose validation guaranteed by block headers.
func testOdr(t *testing.T, protocol int, expFail uint64, checkCached bool, fn odrTestFn) {
// Assemble the test environment
server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, nil, 0, false, true)
defer tearDown()
// Ensure the client has synced all necessary data.
clientHead := client.handler.backend.blockchain.CurrentHeader()
if clientHead.Number.Uint64() != 4 {
t.Fatalf("Failed to sync the chain with server, head: %v", clientHead.Number.Uint64())
}
// Disable the mechanism that we will wait a few time for request
// even there is no suitable peer to send right now.
waitForPeers = 0
test := func(expFail uint64) {
// Mark this as a helper to put the failures at the correct lines
t.Helper()
for i := uint64(0); i <= server.handler.blockchain.CurrentHeader().Number.Uint64(); i++ {
bhash := rawdb.ReadCanonicalHash(server.db, i)
b1 := fn(light.NoOdr, server.db, server.handler.server.chainConfig, server.handler.blockchain, nil, bhash)
// Set the timeout as 1 second here, ensure there is enough time
// for travis to make the action.
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
b2 := fn(ctx, client.db, client.handler.backend.chainConfig, nil, client.handler.backend.blockchain, bhash)
cancel()
eq := bytes.Equal(b1, b2)
exp := i < expFail
if exp && !eq {
t.Fatalf("odr mismatch: have %x, want %x", b2, b1)
}
if !exp && eq {
t.Fatalf("unexpected odr match")
}
}
}
// expect retrievals to fail (except genesis block) without a les peer
client.handler.backend.peers.lock.Lock()
client.peer.speer.hasBlock = func(common.Hash, uint64, bool) bool { return false }
client.handler.backend.peers.lock.Unlock()
test(expFail)
// expect all retrievals to pass
client.handler.backend.peers.lock.Lock()
client.peer.speer.hasBlock = func(common.Hash, uint64, bool) bool { return true }
client.handler.backend.peers.lock.Unlock()
test(5)
// still expect all retrievals to pass, now data should be cached locally
if checkCached {
client.handler.backend.peers.unregister(client.peer.speer.id)
time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
test(5)
}
}