diff --git a/cmd/evm/disasm.go b/cmd/evm/disasm.go index 68a09cbf50cd..f9719497fe10 100644 --- a/cmd/evm/disasm.go +++ b/cmd/evm/disasm.go @@ -46,7 +46,7 @@ func disasmCmd(ctx *cli.Context) error { case ctx.GlobalIsSet(InputFlag.Name): in = ctx.GlobalString(InputFlag.Name) default: - return errors.New("Missing filename or --input value") + return errors.New("missing filename or --input value") } code := strings.TrimSpace(in) diff --git a/cmd/evm/internal/t8ntool/execution.go b/cmd/evm/internal/t8ntool/execution.go index 0471037ed8e2..2a9426540a89 100644 --- a/cmd/evm/internal/t8ntool/execution.go +++ b/cmd/evm/internal/t8ntool/execution.go @@ -82,7 +82,7 @@ type stEnvMarshaling struct { // Apply applies a set of transactions to a pre-state func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig, txs types.Transactions, miningReward int64, - getTracerFn func(txIndex int, txHash common.Hash) (tracer vm.Tracer, err error)) (*state.StateDB, *ExecutionResult, error) { + getTracerFn func(txIndex int, txHash common.Hash) (tracer vm.EVMLogger, err error)) (*state.StateDB, *ExecutionResult, error) { // Capture errors for BLOCKHASH operation, if we haven't been supplied the // required blockhashes diff --git a/cmd/evm/internal/t8ntool/flags.go b/cmd/evm/internal/t8ntool/flags.go index a599462cc61d..a3ba9acc2a10 100644 --- a/cmd/evm/internal/t8ntool/flags.go +++ b/cmd/evm/internal/t8ntool/flags.go @@ -30,7 +30,7 @@ var ( Name: "trace", Usage: "Output full trace logs to files .jsonl", } - TraceDisableMemoryFlag = cli.BoolFlag{ + TraceDisableMemoryFlag = cli.BoolTFlag{ Name: "trace.nomemory", Usage: "Disable full memory dump in traces", } @@ -38,7 +38,7 @@ var ( Name: "trace.nostack", Usage: "Disable stack output in traces", } - TraceDisableReturnDataFlag = cli.BoolFlag{ + TraceDisableReturnDataFlag = cli.BoolTFlag{ Name: "trace.noreturndata", Usage: "Disable return data output in traces", } diff --git a/cmd/evm/internal/t8ntool/transition.go b/cmd/evm/internal/t8ntool/transition.go index fedcd1243569..f5c0dd42f0ba 100644 --- a/cmd/evm/internal/t8ntool/transition.go +++ b/cmd/evm/internal/t8ntool/transition.go @@ -81,10 +81,10 @@ func Main(ctx *cli.Context) error { var ( err error - tracer vm.Tracer + tracer vm.EVMLogger baseDir = "" ) - var getTracer func(txIndex int, txHash common.Hash) (vm.Tracer, error) + var getTracer func(txIndex int, txHash common.Hash) (vm.EVMLogger, error) // If user specified a basedir, make sure it exists if ctx.IsSet(OutputBasedir.Name) { @@ -99,10 +99,10 @@ func Main(ctx *cli.Context) error { if ctx.Bool(TraceFlag.Name) { // Configure the EVM logger logConfig := &vm.LogConfig{ - DisableStack: ctx.Bool(TraceDisableStackFlag.Name), - DisableMemory: ctx.Bool(TraceDisableMemoryFlag.Name), - DisableReturnData: ctx.Bool(TraceDisableReturnDataFlag.Name), - Debug: true, + DisableStack: ctx.Bool(TraceDisableStackFlag.Name), + EnableMemory: !ctx.Bool(TraceDisableMemoryFlag.Name), + EnableReturnData: !ctx.Bool(TraceDisableReturnDataFlag.Name), + Debug: true, } var prevFile *os.File // This one closes the last file @@ -111,7 +111,7 @@ func Main(ctx *cli.Context) error { prevFile.Close() } }() - getTracer = func(txIndex int, txHash common.Hash) (vm.Tracer, error) { + getTracer = func(txIndex int, txHash common.Hash) (vm.EVMLogger, error) { if prevFile != nil { prevFile.Close() } @@ -123,7 +123,7 @@ func Main(ctx *cli.Context) error { return vm.NewJSONLogger(logConfig, traceFile), nil } } else { - getTracer = func(txIndex int, txHash common.Hash) (tracer vm.Tracer, err error) { + getTracer = func(txIndex int, txHash common.Hash) (tracer vm.EVMLogger, err error) { return nil, nil } } diff --git a/cmd/evm/main.go b/cmd/evm/main.go index 8a3e4e0ea253..d78970e7dcdc 100644 --- a/cmd/evm/main.go +++ b/cmd/evm/main.go @@ -113,7 +113,7 @@ var ( Name: "receiver", Usage: "The transaction receiver (execution context)", } - DisableMemoryFlag = cli.BoolFlag{ + DisableMemoryFlag = cli.BoolTFlag{ Name: "nomemory", Usage: "disable memory output", } @@ -125,9 +125,9 @@ var ( Name: "nostorage", Usage: "disable storage output", } - DisableReturnDataFlag = cli.BoolFlag{ + DisableReturnDataFlag = cli.BoolTFlag{ Name: "noreturndata", - Usage: "disable return data output", + Usage: "enable return data output", } EVMInterpreterFlag = cli.StringFlag{ Name: "vm.evm", diff --git a/cmd/evm/runner.go b/cmd/evm/runner.go index 4063767cb8f4..f522233e71b4 100644 --- a/cmd/evm/runner.go +++ b/cmd/evm/runner.go @@ -108,15 +108,15 @@ func runCmd(ctx *cli.Context) error { glogger.Verbosity(log.Lvl(ctx.GlobalInt(VerbosityFlag.Name))) log.Root().SetHandler(glogger) logconfig := &vm.LogConfig{ - DisableMemory: ctx.GlobalBool(DisableMemoryFlag.Name), - DisableStack: ctx.GlobalBool(DisableStackFlag.Name), - DisableStorage: ctx.GlobalBool(DisableStorageFlag.Name), - DisableReturnData: ctx.GlobalBool(DisableReturnDataFlag.Name), - Debug: ctx.GlobalBool(DebugFlag.Name), + EnableMemory: !ctx.GlobalBool(DisableMemoryFlag.Name), + DisableStack: ctx.GlobalBool(DisableStackFlag.Name), + DisableStorage: ctx.GlobalBool(DisableStorageFlag.Name), + EnableReturnData: !ctx.GlobalBool(DisableReturnDataFlag.Name), + Debug: ctx.GlobalBool(DebugFlag.Name), } var ( - tracer vm.Tracer + tracer vm.EVMLogger debugLogger *vm.StructLogger statedb *state.StateDB chainConfig *params.ChainConfig diff --git a/cmd/evm/staterunner.go b/cmd/evm/staterunner.go index c4df936c75ff..bfc243b471d6 100644 --- a/cmd/evm/staterunner.go +++ b/cmd/evm/staterunner.go @@ -59,13 +59,13 @@ func stateTestCmd(ctx *cli.Context) error { // Configure the EVM logger config := &vm.LogConfig{ - DisableMemory: ctx.GlobalBool(DisableMemoryFlag.Name), - DisableStack: ctx.GlobalBool(DisableStackFlag.Name), - DisableStorage: ctx.GlobalBool(DisableStorageFlag.Name), - DisableReturnData: ctx.GlobalBool(DisableReturnDataFlag.Name), + EnableMemory: !ctx.GlobalBool(DisableMemoryFlag.Name), + DisableStack: ctx.GlobalBool(DisableStackFlag.Name), + DisableStorage: ctx.GlobalBool(DisableStorageFlag.Name), + EnableReturnData: !ctx.GlobalBool(DisableReturnDataFlag.Name), } var ( - tracer vm.Tracer + tracer vm.EVMLogger debugger *vm.StructLogger ) switch { diff --git a/cmd/geth/main.go b/cmd/geth/main.go index e896c7d65982..3e2585fed67d 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -39,6 +39,11 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/metrics" "github.com/ethereum/go-ethereum/node" + + // Force-load the tracer engines to trigger registration + _ "github.com/ethereum/go-ethereum/eth/tracers/js" + _ "github.com/ethereum/go-ethereum/eth/tracers/native" + "gopkg.in/urfave/cli.v1" ) diff --git a/core/vm/access_list_tracer.go b/core/vm/access_list_tracer.go index b5bc961c8437..d7993b4f73bb 100644 --- a/core/vm/access_list_tracer.go +++ b/core/vm/access_list_tracer.go @@ -141,7 +141,7 @@ func (a *AccessListTracer) CaptureStart(env *EVM, from common.Address, to common } // CaptureState captures all opcodes that touch storage or addresses and adds them to the accesslist. -func (a *AccessListTracer) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { +func (a *AccessListTracer) CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { stack := scope.Stack if (op == SLOAD || op == SSTORE) && stack.len() >= 1 { slot := common.Hash(stack.data[stack.len()-1].Bytes32()) @@ -161,11 +161,16 @@ func (a *AccessListTracer) CaptureState(env *EVM, pc uint64, op OpCode, gas, cos } } -func (*AccessListTracer) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { +func (*AccessListTracer) CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { } func (*AccessListTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {} +func (*AccessListTracer) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (*AccessListTracer) CaptureExit(output []byte, gasUsed uint64, err error) {} + // AccessList returns the current accesslist maintained by the tracer. func (a *AccessListTracer) AccessList() types.AccessList { return a.list.accessList() diff --git a/core/vm/evm.go b/core/vm/evm.go index 26a5fa7c450f..53e2e8797b65 100644 --- a/core/vm/evm.go +++ b/core/vm/evm.go @@ -232,9 +232,14 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas if !evm.StateDB.Exist(addr) { if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 { // Calling a non existing account, don't do anything, but ping the tracer - if evm.vmConfig.Debug && evm.depth == 0 { - evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) - evm.vmConfig.Tracer.CaptureEnd(ret, 0, 0, nil) + if evm.vmConfig.Debug { + if evm.depth == 0 { + evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) + evm.vmConfig.Tracer.CaptureEnd(ret, 0, 0, nil) + } else { + evm.vmConfig.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value) + evm.vmConfig.Tracer.CaptureExit(ret, 0, nil) + } } return nil, gas, nil } @@ -243,11 +248,19 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas evm.Context.Transfer(evm.StateDB, caller.Address(), addr, value) // Capture the tracer start/end events in debug mode - if evm.vmConfig.Debug && evm.depth == 0 { - evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) - defer func(startGas uint64, startTime time.Time) { // Lazy evaluation of the parameters - evm.vmConfig.Tracer.CaptureEnd(ret, startGas-gas, time.Since(startTime), err) - }(gas, time.Now()) + if evm.vmConfig.Debug { + if evm.depth == 0 { + evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value) + defer func(startGas uint64, startTime time.Time) { // Lazy evaluation of the parameters + evm.vmConfig.Tracer.CaptureEnd(ret, startGas-gas, time.Since(startTime), err) + }(gas, time.Now()) + } else { + // Handle tracer events for entering and exiting a call frame + evm.vmConfig.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value) + defer func(startGas uint64) { + evm.vmConfig.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } } if isPrecompile { @@ -307,6 +320,14 @@ func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte, } var snapshot = evm.StateDB.Snapshot() + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.vmConfig.Debug { + evm.vmConfig.Tracer.CaptureEnter(CALLCODE, caller.Address(), addr, input, gas, value) + defer func(startGas uint64) { + evm.vmConfig.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + // It is allowed to call precompiles, even via delegatecall if p, isPrecompile := evm.precompile(addr); isPrecompile { ret, gas, err = RunPrecompiledContract(p, input, gas) @@ -343,6 +364,14 @@ func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []by } var snapshot = evm.StateDB.Snapshot() + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.vmConfig.Debug { + evm.vmConfig.Tracer.CaptureEnter(DELEGATECALL, caller.Address(), addr, input, gas, nil) + defer func(startGas uint64) { + evm.vmConfig.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + // It is allowed to call precompiles, even via delegatecall if p, isPrecompile := evm.precompile(addr); isPrecompile { ret, gas, err = RunPrecompiledContract(p, input, gas) @@ -388,6 +417,14 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte // future scenarios evm.StateDB.AddBalance(addr, big0) + // Invoke tracer hooks that signal entering/exiting a call frame + if evm.vmConfig.Debug { + evm.vmConfig.Tracer.CaptureEnter(STATICCALL, caller.Address(), addr, input, gas, nil) + defer func(startGas uint64) { + evm.vmConfig.Tracer.CaptureExit(ret, startGas-gas, err) + }(gas) + } + if p, isPrecompile := evm.precompile(addr); isPrecompile { ret, gas, err = RunPrecompiledContract(p, input, gas) } else { @@ -427,7 +464,7 @@ func (c *codeAndHash) Hash() common.Hash { } // create creates a new contract using code as deployment code. -func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address) ([]byte, common.Address, uint64, error) { +func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address, typ OpCode) ([]byte, common.Address, uint64, error) { // Depth check execution. Fail if we're trying to execute above the // limit. if evm.depth > int(params.CallCreateDepth) { @@ -465,9 +502,14 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, return nil, address, gas, nil } - if evm.vmConfig.Debug && evm.depth == 0 { - evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value) + if evm.vmConfig.Debug { + if evm.depth == 0 { + evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value) + } else { + evm.vmConfig.Tracer.CaptureEnter(typ, caller.Address(), address, codeAndHash.code, gas, value) + } } + start := time.Now() ret, err := run(evm, contract, nil, false) @@ -500,8 +542,12 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, } } - if evm.vmConfig.Debug && evm.depth == 0 { - evm.vmConfig.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err) + if evm.vmConfig.Debug { + if evm.depth == 0 { + evm.vmConfig.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err) + } else { + evm.vmConfig.Tracer.CaptureExit(ret, gas-contract.Gas, err) + } } return ret, address, contract.Gas, err } @@ -509,7 +555,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, // Create creates a new contract using code as deployment code. func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { contractAddr = crypto.CreateAddress(caller.Address(), evm.StateDB.GetNonce(caller.Address())) - return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr) + return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr, CREATE) } // Create2 creates a new contract using code as deployment code. @@ -519,7 +565,7 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *big.Int, salt *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { codeAndHash := &codeAndHash{code: code} contractAddr = crypto.CreateAddress2(caller.Address(), salt.Bytes32(), codeAndHash.Hash().Bytes()) - return evm.create(caller, codeAndHash, gas, endowment, contractAddr) + return evm.create(caller, codeAndHash, gas, endowment, contractAddr, CREATE2) } // ChainConfig returns the environment's chain configuration diff --git a/core/vm/instructions.go b/core/vm/instructions.go index f0eac1cc34fb..0ecf28d59a20 100644 --- a/core/vm/instructions.go +++ b/core/vm/instructions.go @@ -791,6 +791,10 @@ func opSuicide(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([] balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address()) interpreter.evm.StateDB.AddBalance(beneficiary.Bytes20(), balance) interpreter.evm.StateDB.Suicide(scope.Contract.Address()) + if interpreter.cfg.Debug { + interpreter.cfg.Tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance) + interpreter.cfg.Tracer.CaptureExit([]byte{}, 0, nil) + } return nil, nil } diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go index c004672cae8e..1155037a1eb3 100644 --- a/core/vm/interpreter.go +++ b/core/vm/interpreter.go @@ -34,10 +34,10 @@ var EVMInterpreterPool = sync.Pool{ // Config are the configuration options for the Interpreter type Config struct { - Debug bool // Enables debugging - Tracer Tracer // Opcode logger - NoRecursion bool // Disables call, callcode, delegate call and create - EnablePreimageRecording bool // Enables recording of SHA3/keccak preimages + Debug bool // Enables debugging + Tracer EVMLogger // Opcode logger + NoRecursion bool // Disables call, callcode, delegate call and create + EnablePreimageRecording bool // Enables recording of SHA3/keccak preimages JumpTable [256]*operation // EVM instruction table, automatically populated if unset @@ -183,9 +183,9 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) ( pc = uint64(0) // program counter cost uint64 // copies used by tracer - pcCopy uint64 // needed for the deferred Tracer - gasCopy uint64 // for Tracer to log gas remaining before execution - logged bool // deferred Tracer should ignore already logged steps + pcCopy uint64 // needed for the deferred EVMLogger + gasCopy uint64 // for EVMLogger to log gas remaining before execution + logged bool // deferred EVMLogger should ignore already logged steps res []byte // result of the opcode execution function ) // Don't move this deferrred function, it's placed before the capturestate-deferred method, @@ -200,9 +200,9 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) ( defer func() { if err != nil { if !logged { - in.cfg.Tracer.CaptureState(in.evm, pcCopy, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) + in.cfg.Tracer.CaptureState(pcCopy, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) } else { - in.cfg.Tracer.CaptureFault(in.evm, pcCopy, op, gasCopy, cost, callContext, in.evm.depth, err) + in.cfg.Tracer.CaptureFault(pcCopy, op, gasCopy, cost, callContext, in.evm.depth, err) } } }() @@ -284,7 +284,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) ( } if in.cfg.Debug { - in.cfg.Tracer.CaptureState(in.evm, pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) + in.cfg.Tracer.CaptureState(pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err) logged = true } diff --git a/core/vm/logger.go b/core/vm/logger.go index be24f315c273..f8f08e7265be 100644 --- a/core/vm/logger.go +++ b/core/vm/logger.go @@ -47,12 +47,12 @@ func (s Storage) Copy() Storage { // LogConfig are the configuration options for structured logger the EVM type LogConfig struct { - DisableMemory bool // disable memory capture - DisableStack bool // disable stack capture - DisableStorage bool // disable storage capture - DisableReturnData bool // disable return data capture - Debug bool // print output during capture end - Limit int // maximum length of output, but zero means unlimited + EnableMemory bool // enable memory capture + DisableStack bool // disable stack capture + DisableStorage bool // disable storage capture + EnableReturnData bool // enable return data capture + Debug bool // print output during capture end + Limit int // maximum length of output, but zero means unlimited // Chain overrides, can be used to execute a trace using future fork rules Overrides *params.ChainConfig `json:"overrides,omitempty"` } @@ -99,25 +99,28 @@ func (s *StructLog) ErrorString() string { return "" } -// Tracer is used to collect execution traces from an EVM transaction +// EVMLogger is used to collect execution traces from an EVM transaction // execution. CaptureState is called for each step of the VM with the // current VM state. // Note that reference types are actual VM data structures; make copies // if you need to retain them beyond the current call. -type Tracer interface { +type EVMLogger interface { CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) - CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) - CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) + CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) + CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) + CaptureExit(output []byte, gasUsed uint64, err error) + CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) } -// StructLogger is an EVM state logger and implements Tracer. +// StructLogger is an EVM state logger and implements EVMLogger. // // StructLogger can capture state based on the given Log configuration and also keeps // a track record of modified storage which is used in reporting snapshots of the // contract their storage. type StructLogger struct { cfg LogConfig + env *EVM storage map[common.Address]Storage logs []StructLog @@ -144,14 +147,15 @@ func (l *StructLogger) Reset() { l.err = nil } -// CaptureStart implements the Tracer interface to initialize the tracing operation. +// CaptureStart implements the EVMLogger interface to initialize the tracing operation. func (l *StructLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + l.env = env } // CaptureState logs a new structured log message and pushes it out to the environment // // CaptureState also tracks SLOAD/SSTORE ops to track storage change. -func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { +func (l *StructLogger) CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { memory := scope.Memory stack := scope.Stack contract := scope.Contract @@ -161,7 +165,7 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui } // Copy a snapshot of the current memory state to a new buffer var mem []byte - if !l.cfg.DisableMemory { + if l.cfg.EnableMemory { mem = make([]byte, len(memory.Data())) copy(mem, memory.Data()) } @@ -185,7 +189,7 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui if op == SLOAD && stack.len() >= 1 { var ( address = common.Hash(stack.data[stack.len()-1].Bytes32()) - value = env.StateDB.GetState(contract.Address(), address) + value = l.env.StateDB.GetState(contract.Address(), address) ) l.storage[contract.Address()][address] = value storage = l.storage[contract.Address()].Copy() @@ -200,18 +204,18 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui } } var rdata []byte - if !l.cfg.DisableReturnData { + if l.cfg.EnableReturnData { rdata = make([]byte, len(rData)) copy(rdata, rData) } // create a new snapshot of the EVM. - log := StructLog{pc, op, gas, cost, mem, memory.Len(), stck, rdata, storage, depth, env.StateDB.GetRefund(), err} + log := StructLog{pc, op, gas, cost, mem, memory.Len(), stck, rdata, storage, depth, l.env.StateDB.GetRefund(), err} l.logs = append(l.logs, log) } -// CaptureFault implements the Tracer interface to trace an execution fault +// CaptureFault implements the EVMLogger interface to trace an execution fault // while running an opcode. -func (l *StructLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { +func (l *StructLogger) CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { } // CaptureEnd is called after the call finishes to finalize the tracing. @@ -226,6 +230,11 @@ func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration } } +func (l *StructLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (l *StructLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} + // StructLogs returns the captured log entries. func (l *StructLogger) StructLogs() []StructLog { return l.logs } @@ -285,12 +294,13 @@ func WriteLogs(writer io.Writer, logs []*types.Log) { type mdLogger struct { out io.Writer cfg *LogConfig + env *EVM } // NewMarkdownLogger creates a logger which outputs information in a format adapted // for human readability, and is also a valid markdown table func NewMarkdownLogger(cfg *LogConfig, writer io.Writer) *mdLogger { - l := &mdLogger{writer, cfg} + l := &mdLogger{out: writer, cfg: cfg} if l.cfg == nil { l.cfg = &LogConfig{} } @@ -298,6 +308,7 @@ func NewMarkdownLogger(cfg *LogConfig, writer io.Writer) *mdLogger { } func (t *mdLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + t.env = env if !create { fmt.Fprintf(t.out, "From: `%v`\nTo: `%v`\nData: `0x%x`\nGas: `%d`\nValue `%v` wei\n", from.String(), to.String(), @@ -315,7 +326,7 @@ func (t *mdLogger) CaptureStart(env *EVM, from common.Address, to common.Address } // CaptureState also tracks SLOAD/SSTORE ops to track storage change. -func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { +func (t *mdLogger) CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { stack := scope.Stack fmt.Fprintf(t.out, "| %4d | %10v | %3d |", pc, op, cost) @@ -328,14 +339,14 @@ func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64 b := fmt.Sprintf("[%v]", strings.Join(a, ",")) fmt.Fprintf(t.out, "%10v |", b) } - fmt.Fprintf(t.out, "%10v |", env.StateDB.GetRefund()) + fmt.Fprintf(t.out, "%10v |", t.env.StateDB.GetRefund()) fmt.Fprintln(t.out, "") if err != nil { fmt.Fprintf(t.out, "Error: %v\n", err) } } -func (t *mdLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { +func (t *mdLogger) CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) { fmt.Fprintf(t.out, "\nError: at pc=%d, op=%v: %v\n", pc, op, err) } @@ -343,3 +354,8 @@ func (t *mdLogger) CaptureEnd(output []byte, gasUsed uint64, tm time.Duration, e fmt.Fprintf(t.out, "\nOutput: `0x%x`\nConsumed gas: `%d`\nError: `%v`\n", output, gasUsed, err) } + +func (t *mdLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (t *mdLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} diff --git a/core/vm/logger_json.go b/core/vm/logger_json.go index 0975452b601a..c249dba7e2e3 100644 --- a/core/vm/logger_json.go +++ b/core/vm/logger_json.go @@ -29,12 +29,13 @@ import ( type JSONLogger struct { encoder *json.Encoder cfg *LogConfig + env *EVM } // NewJSONLogger creates a new EVM tracer that prints execution steps as JSON objects // into the provided stream. func NewJSONLogger(cfg *LogConfig, writer io.Writer) *JSONLogger { - l := &JSONLogger{json.NewEncoder(writer), cfg} + l := &JSONLogger{encoder: json.NewEncoder(writer), cfg: cfg} if l.cfg == nil { l.cfg = &LogConfig{} } @@ -42,12 +43,13 @@ func NewJSONLogger(cfg *LogConfig, writer io.Writer) *JSONLogger { } func (l *JSONLogger) CaptureStart(env *EVM, from, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + l.env = env } -func (l *JSONLogger) CaptureFault(*EVM, uint64, OpCode, uint64, uint64, *ScopeContext, int, error) {} +func (l *JSONLogger) CaptureFault(uint64, OpCode, uint64, uint64, *ScopeContext, int, error) {} // CaptureState outputs state information on the logger. -func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { +func (l *JSONLogger) CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) { memory := scope.Memory stack := scope.Stack @@ -58,16 +60,16 @@ func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint GasCost: cost, MemorySize: memory.Len(), Depth: depth, - RefundCounter: env.StateDB.GetRefund(), + RefundCounter: l.env.StateDB.GetRefund(), Err: err, } - if !l.cfg.DisableMemory { + if l.cfg.EnableMemory { log.Memory = memory.Data() } if !l.cfg.DisableStack { log.Stack = stack.data } - if !l.cfg.DisableReturnData { + if l.cfg.EnableReturnData { log.ReturnData = rData } l.encoder.Encode(log) @@ -86,3 +88,8 @@ func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, } l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, ""}) } + +func (l *JSONLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +func (l *JSONLogger) CaptureExit(output []byte, gasUsed uint64, err error) {} diff --git a/core/vm/logger_test.go b/core/vm/logger_test.go index 9c936af36ab1..5d1aa8e54d41 100644 --- a/core/vm/logger_test.go +++ b/core/vm/logger_test.go @@ -63,7 +63,8 @@ func TestStoreCapture(t *testing.T) { scope.Stack.push(uint256.NewInt().SetUint64(1)) scope.Stack.push(uint256.NewInt()) var index common.Hash - logger.CaptureState(env, 0, SSTORE, 0, 0, scope, nil, 0, nil) + logger.CaptureStart(env, common.Address{}, contract.Address(), false, nil, 0, nil) + logger.CaptureState(0, SSTORE, 0, 0, scope, nil, 0, nil) if len(logger.storage[contract.Address()]) == 0 { t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.storage[contract.Address()])) diff --git a/core/vm/runtime/runtime_test.go b/core/vm/runtime/runtime_test.go index dcf2d0d4478d..fea7817ff7fa 100644 --- a/core/vm/runtime/runtime_test.go +++ b/core/vm/runtime/runtime_test.go @@ -33,7 +33,11 @@ import ( "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/eth/tracers" "github.com/ethereum/go-ethereum/params" + + // force-load js tracers to trigger registration + _ "github.com/ethereum/go-ethereum/eth/tracers/js" ) func TestDefaults(t *testing.T) { @@ -329,12 +333,12 @@ type stepCounter struct { func (s *stepCounter) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { } -func (s *stepCounter) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { +func (s *stepCounter) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { } func (s *stepCounter) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {} -func (s *stepCounter) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { +func (s *stepCounter) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { s.steps++ // Enable this for more output //s.inner.CaptureState(env, pc, op, gas, cost, memory, stack, rStack, contract, depth, err) @@ -342,11 +346,21 @@ func (s *stepCounter) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, co // benchmarkNonModifyingCode benchmarks code, but if the code modifies the // state, this should not be used, since it does not reset the state between runs. -func benchmarkNonModifyingCode(gas uint64, code []byte, name string, b *testing.B) { +func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode string, b *testing.B) { cfg := new(Config) setDefaults(cfg) cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) cfg.GasLimit = gas + if len(tracerCode) > 0 { + tracer, err := tracers.New(tracerCode, new(tracers.Context)) + if err != nil { + b.Fatal(err) + } + cfg.EVMConfig = vm.Config{ + Debug: true, + Tracer: tracer, + } + } var ( destination = common.BytesToAddress([]byte("contract")) vmenv = NewEnv(cfg) @@ -486,12 +500,12 @@ func BenchmarkSimpleLoop(b *testing.B) { // Tracer: tracer, // }}) // 100M gas - benchmarkNonModifyingCode(100000000, staticCallIdentity, "staticcall-identity-100M", b) - benchmarkNonModifyingCode(100000000, callIdentity, "call-identity-100M", b) - benchmarkNonModifyingCode(100000000, loopingCode, "loop-100M", b) - benchmarkNonModifyingCode(100000000, callInexistant, "call-nonexist-100M", b) - benchmarkNonModifyingCode(100000000, callEOA, "call-EOA-100M", b) - benchmarkNonModifyingCode(100000000, calllRevertingContractWithInput, "call-reverting-100M", b) + benchmarkNonModifyingCode(100000000, staticCallIdentity, "staticcall-identity-100M", "", b) + benchmarkNonModifyingCode(100000000, callIdentity, "call-identity-100M", "", b) + benchmarkNonModifyingCode(100000000, loopingCode, "loop-100M", "", b) + benchmarkNonModifyingCode(100000000, callInexistant, "call-nonexist-100M", "", b) + benchmarkNonModifyingCode(100000000, callEOA, "call-EOA-100M", "", b) + benchmarkNonModifyingCode(100000000, calllRevertingContractWithInput, "call-reverting-100M", "", b) //benchmarkNonModifyingCode(10000000, staticCallIdentity, "staticcall-identity-10M", b) //benchmarkNonModifyingCode(10000000, loopingCode, "loop-10M", b) @@ -500,7 +514,7 @@ func BenchmarkSimpleLoop(b *testing.B) { // TestEip2929Cases contains various testcases that are used for // EIP-2929 about gas repricings func TestEip2929Cases(t *testing.T) { - + t.Skip("Test only useful for generating documentation") id := 1 prettyPrint := func(comment string, code []byte) { @@ -688,3 +702,241 @@ func TestColdAccountAccessCost(t *testing.T) { } } } + +func TestRuntimeJSTracer(t *testing.T) { + jsTracers := []string{ + `{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0, + step: function() { this.steps++}, + fault: function() {}, + result: function() { + return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",") + }, + enter: function(frame) { + this.enters++; + this.enterGas = frame.getGas(); + }, + exit: function(res) { + this.exits++; + this.gasUsed = res.getGasUsed(); + }}`, + `{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0, + fault: function() {}, + result: function() { + return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",") + }, + enter: function(frame) { + this.enters++; + this.enterGas = frame.getGas(); + }, + exit: function(res) { + this.exits++; + this.gasUsed = res.getGasUsed(); + }}`} + tests := []struct { + code []byte + // One result per tracer + results []string + }{ + { + // CREATE + code: []byte{ + // Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes) + byte(vm.PUSH5), + // Init code: PUSH1 0, PUSH1 0, RETURN (3 steps) + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN), + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + // length, offset, value + byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0, + byte(vm.CREATE), + byte(vm.POP), + }, + results: []string{`"1,1,4294935775,6,12"`, `"1,1,4294935775,6,0"`}, + }, + { + // CREATE2 + code: []byte{ + // Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes) + byte(vm.PUSH5), + // Init code: PUSH1 0, PUSH1 0, RETURN (3 steps) + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN), + byte(vm.PUSH1), 0, + byte(vm.MSTORE), + // salt, length, offset, value + byte(vm.PUSH1), 1, byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0, + byte(vm.CREATE2), + byte(vm.POP), + }, + results: []string{`"1,1,4294935766,6,13"`, `"1,1,4294935766,6,0"`}, + }, + { + // CALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xbb, //address + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`}, + }, + { + // CALLCODE + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xcc, //address + byte(vm.GAS), // gas + byte(vm.CALLCODE), + byte(vm.POP), + }, + results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`}, + }, + { + // STATICCALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0xdd, //address + byte(vm.GAS), // gas + byte(vm.STATICCALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`}, + }, + { + // DELEGATECALL + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0xee, //address + byte(vm.GAS), // gas + byte(vm.DELEGATECALL), + byte(vm.POP), + }, + results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`}, + }, + { + // CALL self-destructing contract + code: []byte{ + // outsize, outoffset, insize, inoffset + byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, // value + byte(vm.PUSH1), 0xff, //address + byte(vm.GAS), // gas + byte(vm.CALL), + byte(vm.POP), + }, + results: []string{`"2,2,0,5003,12"`, `"2,2,0,5003,0"`}, + }, + } + calleeCode := []byte{ + byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, + byte(vm.RETURN), + } + depressedCode := []byte{ + byte(vm.PUSH1), 0xaa, + byte(vm.SELFDESTRUCT), + } + main := common.HexToAddress("0xaa") + for i, jsTracer := range jsTracers { + for j, tc := range tests { + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + statedb.SetCode(main, tc.code) + statedb.SetCode(common.HexToAddress("0xbb"), calleeCode) + statedb.SetCode(common.HexToAddress("0xcc"), calleeCode) + statedb.SetCode(common.HexToAddress("0xdd"), calleeCode) + statedb.SetCode(common.HexToAddress("0xee"), calleeCode) + statedb.SetCode(common.HexToAddress("0xff"), depressedCode) + + tracer, err := tracers.New(jsTracer, new(tracers.Context)) + if err != nil { + t.Fatal(err) + } + _, _, err = Call(main, nil, &Config{ + State: statedb, + EVMConfig: vm.Config{ + Debug: true, + Tracer: tracer, + }}) + if err != nil { + t.Fatal("didn't expect error", err) + } + res, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + if have, want := string(res), tc.results[i]; have != want { + t.Errorf("wrong result for tracer %d testcase %d, have \n%v\nwant\n%v\n", i, j, have, want) + } + } + } +} + +func TestJSTracerCreateTx(t *testing.T) { + jsTracer := ` + {enters: 0, exits: 0, + step: function() {}, + fault: function() {}, + result: function() { return [this.enters, this.exits].join(",") }, + enter: function(frame) { this.enters++ }, + exit: function(res) { this.exits++ }}` + code := []byte{byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN)} + + statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil) + tracer, err := tracers.New(jsTracer, new(tracers.Context)) + if err != nil { + t.Fatal(err) + } + _, _, _, err = Create(code, &Config{ + State: statedb, + EVMConfig: vm.Config{ + Debug: true, + Tracer: tracer, + }}) + if err != nil { + t.Fatal(err) + } + + res, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + if have, want := string(res), `"0,0"`; have != want { + t.Errorf("wrong result for tracer, have \n%v\nwant\n%v\n", have, want) + } +} + +func BenchmarkTracerStepVsCallFrame(b *testing.B) { + // Simply pushes and pops some values in a loop + code := []byte{ + byte(vm.JUMPDEST), + byte(vm.PUSH1), 0, + byte(vm.PUSH1), 0, + byte(vm.POP), + byte(vm.POP), + byte(vm.PUSH1), 0, // jumpdestination + byte(vm.JUMP), + } + + stepTracer := ` + { + step: function() {}, + fault: function() {}, + result: function() {}, + }` + callFrameTracer := ` + { + enter: function() {}, + exit: function() {}, + fault: function() {}, + result: function() {}, + }` + + benchmarkNonModifyingCode(10000000, code, "tracer-step-10M", stepTracer, b) + benchmarkNonModifyingCode(10000000, code, "tracer-call-frame-10M", callFrameTracer, b) +} diff --git a/core/vm/stack.go b/core/vm/stack.go index c71d2653a5cd..220f97c89f64 100644 --- a/core/vm/stack.go +++ b/core/vm/stack.go @@ -91,7 +91,7 @@ func (st *Stack) Print() { fmt.Println("### stack ###") if len(st.data) > 0 { for i, val := range st.data { - fmt.Printf("%-3d %v\n", i, val) + fmt.Printf("%-3d %s\n", i, val.String()) } } else { fmt.Println("-- empty --") diff --git a/eth/api_backend.go b/eth/api_backend.go index 18514b7cc3bd..daf6c19ecead 100644 --- a/eth/api_backend.go +++ b/eth/api_backend.go @@ -338,8 +338,8 @@ func (b *EthAPIBackend) StartMining(threads int) error { return b.eth.StartMining(threads) } -func (b *EthAPIBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error) { - return b.eth.stateAtBlock(block, reexec, base, checkLive) +func (b *EthAPIBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive, preferDisk bool) (*state.StateDB, error) { + return b.eth.stateAtBlock(block, reexec, base, checkLive, preferDisk) } func (b *EthAPIBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) { diff --git a/eth/state_accessor.go b/eth/state_accessor.go index 461dc491fb02..6ea3161d6132 100644 --- a/eth/state_accessor.go +++ b/eth/state_accessor.go @@ -37,7 +37,17 @@ import ( // are attempted to be reexecuted to generate the desired state. The optional // base layer statedb can be passed then it's regarded as the statedb of the // parent block. -func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (statedb *state.StateDB, err error) { +// Parameters: +// - block: The block for which we want the state (== state at the stateRoot of the parent) +// - reexec: The maximum number of blocks to reprocess trying to obtain the desired state +// - base: If the caller is tracing multiple blocks, the caller can provide the parent state +// continuously from the callsite. +// - checklive: if true, then the live 'blockchain' state database is used. If the caller want to +// perform Commit or other 'save-to-disk' changes, this should be set to false to avoid +// storing trash persistently +// - preferDisk: this arg can be used by the caller to signal that even though the 'base' is provided, +// it would be preferrable to start from a fresh state, if we have it on disk. +func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (statedb *state.StateDB, err error) { var ( current *types.Block database state.Database @@ -52,6 +62,15 @@ func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state } } if base != nil { + if preferDisk { + // Create an ephemeral trie.Database for isolating the live one. Otherwise + // the internal junks created by tracing will be persisted into the disk. + database = state.NewDatabaseWithConfig(eth.chainDb, &trie.Config{Cache: 16}) + if statedb, err = state.New(block.Root(), database, nil); err == nil { + log.Info("Found disk backend for state trie", "root", block.Root(), "number", block.Number()) + return statedb, nil + } + } // The optional base statedb is given, mark the start point as parent block statedb, database, report = base, base.Database(), false current = eth.blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1) @@ -121,7 +140,8 @@ func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state // Finalize the state so any modifications are written to the trie root, _, err := statedb.Commit(eth.blockchain.Config().IsEIP158(current.Number())) if err != nil { - return nil, err + return nil, fmt.Errorf("stateAtBlock commit failed, number %d root %v: %w", + current.NumberU64(), current.Root().Hex(), err) } statedb, err = state.New(root, database, nil) if err != nil { @@ -153,7 +173,7 @@ func (eth *Ethereum) stateAtTransaction(block *types.Block, txIndex int, reexec } // Lookup the statedb of parent block from the live database, // otherwise regenerate it on the flight. - statedb, err := eth.stateAtBlock(parent, reexec, nil, true) + statedb, err := eth.stateAtBlock(parent, reexec, nil, true, false) if err != nil { return nil, vm.BlockContext{}, nil, err } diff --git a/eth/tracers/api.go b/eth/tracers/api.go index 5f20858b2ed9..a44982b8646b 100644 --- a/eth/tracers/api.go +++ b/eth/tracers/api.go @@ -55,6 +55,13 @@ const ( // and reexecute to produce missing historical state necessary to run a specific // trace. defaultTraceReexec = uint64(128) + + // defaultTracechainMemLimit is the size of the triedb, at which traceChain + // switches over and tries to use a disk-backed database instead of building + // on top of memory. + // For non-archive nodes, this limit _will_ be overblown, as disk-backed tries + // will only be found every ~15K blocks or so. + defaultTracechainMemLimit = common.StorageSize(500 * 1024 * 1024) ) // Backend interface provides the common API services (that are provided by @@ -69,7 +76,10 @@ type Backend interface { ChainConfig() *params.ChainConfig Engine() consensus.Engine ChainDb() ethdb.Database - StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error) + // StateAtBlock returns the state corresponding to the stateroot of the block. + // N.B: For executing transactions on block N, the required stateRoot is block N-1, + // so this method should be called with the parent. + StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive, preferDisk bool) (*state.StateDB, error) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) } @@ -180,13 +190,6 @@ type StdTraceConfig struct { TxHash common.Hash } -// txTraceContext is the contextual infos about a transaction before it gets run. -type txTraceContext struct { - index int // Index of the transaction within the block - hash common.Hash // Hash of the transaction - block common.Hash // Hash of the block containing the transaction -} - // txTraceResult is the result of a single transaction trace. type txTraceResult struct { Result interface{} `json:"result,omitempty"` // Trace results produced by the tracer @@ -274,10 +277,10 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config // Trace all the transactions contained within for i, tx := range task.block.Transactions() { msg, _ := tx.AsMessage(signer) - txctx := &txTraceContext{ - index: i, - hash: tx.Hash(), - block: task.block.Hash(), + txctx := &Context{ + BlockHash: task.block.Hash(), + TxIndex: i, + TxHash: tx.Hash(), } res, err := api.traceTx(localctx, msg, txctx, blockCtx, task.statedb, config) if err != nil { @@ -299,7 +302,11 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config }) } // Start a goroutine to feed all the blocks into the tracers - begin := time.Now() + var ( + begin = time.Now() + derefTodo []common.Hash // list of hashes to dereference from the db + derefsMu sync.Mutex // mutex for the derefs + ) gopool.Submit(func() { var ( @@ -325,6 +332,7 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config } close(results) }() + var preferDisk bool // Feed all the blocks both into the tracer, as well as fast process concurrently for number = start.NumberU64(); number < end.NumberU64(); number++ { // Stop tracing if interruption was requested @@ -333,6 +341,14 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config return default: } + // clean out any derefs + derefsMu.Lock() + for _, h := range derefTodo { + statedb.Database().TrieDB().Dereference(h) + } + derefTodo = derefTodo[:0] + derefsMu.Unlock() + // Print progress logs if long enough time elapsed if time.Since(logged) > 8*time.Second { logged = time.Now() @@ -346,18 +362,24 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config } // Prepare the statedb for tracing. Don't use the live database for // tracing to avoid persisting state junks into the database. - statedb, err = api.backend.StateAtBlock(localctx, block, reexec, statedb, false) + statedb, err = api.backend.StateAtBlock(localctx, block, reexec, statedb, false, preferDisk) if err != nil { failed = err break } - if statedb.Database().TrieDB() != nil { + if trieDb := statedb.Database().TrieDB(); trieDb != nil { // Hold the reference for tracer, will be released at the final stage - statedb.Database().TrieDB().Reference(block.Root(), common.Hash{}) + trieDb.Reference(block.Root(), common.Hash{}) // Release the parent state because it's already held by the tracer if parent != (common.Hash{}) { - statedb.Database().TrieDB().Dereference(parent) + trieDb.Dereference(parent) + } + // Prefer disk if the trie db memory grows too much + s1, s2 := trieDb.Size() + if !preferDisk && (s1+s2) > defaultTracechainMemLimit { + log.Info("Switching to prefer-disk mode for tracing", "size", s1+s2) + preferDisk = true } } parent = block.Root() @@ -391,12 +413,11 @@ func (api *API) traceChain(ctx context.Context, start, end *types.Block, config Hash: res.block.Hash(), Traces: res.results, } + // Schedule any parent tries held in memory by this task for dereferencing done[uint64(result.Block)] = result - - // Dereference any parent tries held in memory by this task - if res.statedb.Database().TrieDB() != nil { - res.statedb.Database().TrieDB().Dereference(res.rootref) - } + derefsMu.Lock() + derefTodo = append(derefTodo, res.rootref) + derefsMu.Unlock() // Stream completed traces to the user, aborting on the first error for result, ok := done[next]; ok; result, ok = done[next] { if len(result.Traces) > 0 || next == end.NumberU64() { @@ -454,12 +475,11 @@ func (api *API) TraceBlockFromFile(ctx context.Context, file string, config *Tra // EVM against a block pulled from the pool of bad ones and returns them as a JSON // object. func (api *API) TraceBadBlock(ctx context.Context, hash common.Hash, config *TraceConfig) ([]*txTraceResult, error) { - for _, block := range rawdb.ReadAllBadBlocks(api.backend.ChainDb()) { - if block.Hash() == hash { - return api.traceBlock(ctx, block, config) - } + block := rawdb.ReadBadBlock(api.backend.ChainDb(), hash) + if block == nil { + return nil, fmt.Errorf("bad block %#x not found", hash) } - return nil, fmt.Errorf("bad block %#x not found", hash) + return api.traceBlock(ctx, block, config) } // StandardTraceBlockToFile dumps the structured logs created during the @@ -473,16 +493,83 @@ func (api *API) StandardTraceBlockToFile(ctx context.Context, hash common.Hash, return api.standardTraceBlockToFile(ctx, block, config) } +// IntermediateRoots executes a block (bad- or canon- or side-), and returns a list +// of intermediate roots: the stateroot after each transaction. +func (api *API) IntermediateRoots(ctx context.Context, hash common.Hash, config *TraceConfig) ([]common.Hash, error) { + block, _ := api.blockByHash(ctx, hash) + if block == nil { + // Check in the bad blocks + block = rawdb.ReadBadBlock(api.backend.ChainDb(), hash) + } + if block == nil { + return nil, fmt.Errorf("block %#x not found", hash) + } + if block.NumberU64() == 0 { + return nil, errors.New("genesis is not traceable") + } + parent, err := api.blockByNumberAndHash(ctx, rpc.BlockNumber(block.NumberU64()-1), block.ParentHash()) + if err != nil { + return nil, err + } + reexec := defaultTraceReexec + if config != nil && config.Reexec != nil { + reexec = *config.Reexec + } + statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true, false) + if err != nil { + return nil, err + } + var ( + roots []common.Hash + signer = types.MakeSigner(api.backend.ChainConfig(), block.Number()) + chainConfig = api.backend.ChainConfig() + vmctx = core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) + deleteEmptyObjects = chainConfig.IsEIP158(block.Number()) + ) + for i, tx := range block.Transactions() { + var ( + msg, _ = tx.AsMessage(signer) + txContext = core.NewEVMTxContext(msg) + vmenv = vm.NewEVM(vmctx, txContext, statedb, chainConfig, vm.Config{}) + ) + + if posa, ok := api.backend.Engine().(consensus.PoSA); ok { + if isSystem, _ := posa.IsSystemTransaction(tx, block.Header()); isSystem { + balance := statedb.GetBalance(consensus.SystemAddress) + if balance.Cmp(common.Big0) > 0 { + statedb.SetBalance(consensus.SystemAddress, big.NewInt(0)) + statedb.AddBalance(vmctx.Coinbase, balance) + } + } + } + + statedb.Prepare(tx.Hash(), block.Hash(), i) + if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(msg.Gas())); err != nil { + log.Warn("Tracing intermediate roots did not complete", "txindex", i, "txhash", tx.Hash(), "err", err) + // We intentionally don't return the error here: if we do, then the RPC server will not + // return the roots. Most likely, the caller already knows that a certain transaction fails to + // be included, but still want the intermediate roots that led to that point. + // It may happen the tx_N causes an erroneous state, which in turn causes tx_N+M to not be + // executable. + // N.B: This should never happen while tracing canon blocks, only when tracing bad blocks. + return roots, nil + } + // calling IntermediateRoot will internally call Finalize on the state + // so any modifications are written to the trie + roots = append(roots, statedb.IntermediateRoot(deleteEmptyObjects)) + } + return roots, nil +} + // StandardTraceBadBlockToFile dumps the structured logs created during the // execution of EVM against a block pulled from the pool of bad ones to the // local file system and returns a list of files to the caller. func (api *API) StandardTraceBadBlockToFile(ctx context.Context, hash common.Hash, config *StdTraceConfig) ([]string, error) { - for _, block := range rawdb.ReadAllBadBlocks(api.backend.ChainDb()) { - if block.Hash() == hash { - return api.standardTraceBlockToFile(ctx, block, config) - } + block := rawdb.ReadBadBlock(api.backend.ChainDb(), hash) + if block == nil { + return nil, fmt.Errorf("bad block %#x not found", hash) } - return nil, fmt.Errorf("bad block %#x not found", hash) + return api.standardTraceBlockToFile(ctx, block, config) } // traceBlock configures a new tracer according to the provided configuration, and @@ -500,7 +587,7 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac if config != nil && config.Reexec != nil { reexec = *config.Reexec } - statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true) + statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true, false) if err != nil { return nil, err } @@ -520,16 +607,18 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac blockCtx := core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) blockHash := block.Hash() for th := 0; th < threads; th++ { + blockCtx := blockCtx + pend.Add(1) gopool.Submit(func() { defer pend.Done() // Fetch and execute the next transaction trace tasks for task := range jobs { msg, _ := txs[task.index].AsMessage(signer) - txctx := &txTraceContext{ - index: task.index, - hash: txs[task.index].Hash(), - block: blockHash, + txctx := &Context{ + BlockHash: blockHash, + TxIndex: task.index, + TxHash: txs[task.index].Hash(), } res, err := api.traceTx(ctx, msg, txctx, blockCtx, task.statedb, config) if err != nil { @@ -542,6 +631,7 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac } // Feed the transactions into the tracers and return var failed error + blockCtx = core.NewEVMBlockContext(block.Header(), api.chainContext(ctx), nil) for i, tx := range txs { // Send the trace task over for execution jobs <- &txTraceTask{statedb: statedb.Copy(), index: i} @@ -600,7 +690,7 @@ func (api *API) standardTraceBlockToFile(ctx context.Context, block *types.Block if config != nil && config.Reexec != nil { reexec = *config.Reexec } - statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true) + statedb, err := api.backend.StateAtBlock(ctx, parent, reexec, nil, true, false) if err != nil { return nil, err } @@ -740,10 +830,10 @@ func (api *API) TraceTransaction(ctx context.Context, hash common.Hash, config * if err != nil { return nil, err } - txctx := &txTraceContext{ - index: int(index), - hash: hash, - block: blockHash, + txctx := &Context{ + BlockHash: blockHash, + TxIndex: int(index), + TxHash: hash, } return api.traceTx(ctx, msg, txctx, vmctx, statedb, config) } @@ -773,7 +863,7 @@ func (api *API) TraceCall(ctx context.Context, args ethapi.CallArgs, blockNrOrHa if config != nil && config.Reexec != nil { reexec = *config.Reexec } - statedb, err := api.backend.StateAtBlock(ctx, block, reexec, nil, true) + statedb, err := api.backend.StateAtBlock(ctx, block, reexec, nil, true, false) if err != nil { return nil, err } @@ -796,21 +886,23 @@ func (api *API) TraceCall(ctx context.Context, args ethapi.CallArgs, blockNrOrHa Reexec: config.Reexec, } } - return api.traceTx(ctx, msg, new(txTraceContext), vmctx, statedb, traceConfig) + return api.traceTx(ctx, msg, new(Context), vmctx, statedb, traceConfig) } // traceTx configures a new tracer according to the provided configuration, and // executes the given message in the provided environment. The return value will // be tracer dependent. -func (api *API) traceTx(ctx context.Context, message core.Message, txctx *txTraceContext, vmctx vm.BlockContext, statedb *state.StateDB, config *TraceConfig) (interface{}, error) { +func (api *API) traceTx(ctx context.Context, message core.Message, txctx *Context, vmctx vm.BlockContext, statedb *state.StateDB, config *TraceConfig) (interface{}, error) { // Assemble the structured logger or the JavaScript tracer var ( - tracer vm.Tracer + tracer vm.EVMLogger err error txContext = core.NewEVMTxContext(message) ) switch { - case config != nil && config.Tracer != nil: + case config == nil: + tracer = vm.NewStructLogger(nil) + case config.Tracer != nil: // Define a meaningful timeout of a single transaction trace timeout := defaultTraceTimeout if config.Timeout != nil { @@ -818,23 +910,19 @@ func (api *API) traceTx(ctx context.Context, message core.Message, txctx *txTrac return nil, err } } - // Constuct the JavaScript tracer to execute with - if tracer, err = New(*config.Tracer, txContext); err != nil { + if t, err := New(*config.Tracer, txctx); err != nil { return nil, err + } else { + deadlineCtx, cancel := context.WithTimeout(ctx, timeout) + go func() { + <-deadlineCtx.Done() + if errors.Is(deadlineCtx.Err(), context.DeadlineExceeded) { + t.Stop(errors.New("execution timeout")) + } + }() + defer cancel() + tracer = t } - // Handle timeouts and RPC cancellations - deadlineCtx, cancel := context.WithTimeout(ctx, timeout) - gopool.Submit(func() { - <-deadlineCtx.Done() - if deadlineCtx.Err() == context.DeadlineExceeded { - tracer.(*Tracer).Stop(errors.New("execution timeout")) - } - }) - defer cancel() - - case config == nil: - tracer = vm.NewStructLogger(nil) - default: tracer = vm.NewStructLogger(config.LogConfig) } @@ -851,7 +939,7 @@ func (api *API) traceTx(ctx context.Context, message core.Message, txctx *txTrac } // Call Prepare to clear out the statedb access list - statedb.Prepare(txctx.hash, txctx.block, txctx.index) + statedb.Prepare(txctx.TxHash, txctx.BlockHash, txctx.TxIndex) result, err := core.ApplyMessage(vmenv, message, new(core.GasPool).AddGas(message.Gas())) if err != nil { @@ -873,7 +961,7 @@ func (api *API) traceTx(ctx context.Context, message core.Message, txctx *txTrac StructLogs: ethapi.FormatLogs(tracer.StructLogs()), }, nil - case *Tracer: + case Tracer: return tracer.GetResult() default: diff --git a/eth/tracers/api_test.go b/eth/tracers/api_test.go index 598c84c3b1c5..6a64de0e3a4f 100644 --- a/eth/tracers/api_test.go +++ b/eth/tracers/api_test.go @@ -139,7 +139,7 @@ func (b *testBackend) ChainDb() ethdb.Database { return b.chaindb } -func (b *testBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error) { +func (b *testBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (*state.StateDB, error) { statedb, err := b.chain.StateAt(block.Root()) if err != nil { return nil, errStateNotFound @@ -307,147 +307,6 @@ func TestTraceCall(t *testing.T) { } } -func TestOverridenTraceCall(t *testing.T) { - t.Parallel() - - // Initialize test accounts - accounts := newAccounts(3) - genesis := &core.Genesis{Alloc: core.GenesisAlloc{ - accounts[0].addr: {Balance: big.NewInt(params.Ether)}, - accounts[1].addr: {Balance: big.NewInt(params.Ether)}, - accounts[2].addr: {Balance: big.NewInt(params.Ether)}, - }} - genBlocks := 10 - signer := types.HomesteadSigner{} - api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) { - // Transfer from account[0] to account[1] - // value: 1000 wei - // fee: 0 wei - tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key) - b.AddTx(tx) - })) - randomAccounts, tracer := newAccounts(3), "callTracer" - - var testSuite = []struct { - blockNumber rpc.BlockNumber - call ethapi.CallArgs - config *TraceCallConfig - expectErr error - expect *callTrace - }{ - // Succcessful call with state overriding - { - blockNumber: rpc.PendingBlockNumber, - call: ethapi.CallArgs{ - From: &randomAccounts[0].addr, - To: &randomAccounts[1].addr, - Value: (*hexutil.Big)(big.NewInt(1000)), - }, - config: &TraceCallConfig{ - Tracer: &tracer, - StateOverrides: ðapi.StateOverride{ - randomAccounts[0].addr: ethapi.OverrideAccount{Balance: newRPCBalance(new(big.Int).Mul(big.NewInt(1), big.NewInt(params.Ether)))}, - }, - }, - expectErr: nil, - expect: &callTrace{ - Type: "CALL", - From: randomAccounts[0].addr, - To: randomAccounts[1].addr, - Gas: newRPCUint64(24979000), - GasUsed: newRPCUint64(0), - Value: (*hexutil.Big)(big.NewInt(1000)), - }, - }, - // Invalid call without state overriding - { - blockNumber: rpc.PendingBlockNumber, - call: ethapi.CallArgs{ - From: &randomAccounts[0].addr, - To: &randomAccounts[1].addr, - Value: (*hexutil.Big)(big.NewInt(1000)), - }, - config: &TraceCallConfig{ - Tracer: &tracer, - }, - expectErr: core.ErrInsufficientFundsForTransfer, - expect: nil, - }, - // Successful simple contract call - // - // // SPDX-License-Identifier: GPL-3.0 - // - // pragma solidity >=0.7.0 <0.8.0; - // - // /** - // * @title Storage - // * @dev Store & retrieve value in a variable - // */ - // contract Storage { - // uint256 public number; - // constructor() { - // number = block.number; - // } - // } - { - blockNumber: rpc.PendingBlockNumber, - call: ethapi.CallArgs{ - From: &randomAccounts[0].addr, - To: &randomAccounts[2].addr, - Data: newRPCBytes(common.Hex2Bytes("8381f58a")), // call number() - }, - config: &TraceCallConfig{ - Tracer: &tracer, - StateOverrides: ðapi.StateOverride{ - randomAccounts[2].addr: ethapi.OverrideAccount{ - Code: newRPCBytes(common.Hex2Bytes("6080604052348015600f57600080fd5b506004361060285760003560e01c80638381f58a14602d575b600080fd5b60336049565b6040518082815260200191505060405180910390f35b6000548156fea2646970667358221220eab35ffa6ab2adfe380772a48b8ba78e82a1b820a18fcb6f59aa4efb20a5f60064736f6c63430007040033")), - StateDiff: newStates([]common.Hash{{}}, []common.Hash{common.BigToHash(big.NewInt(123))}), - }, - }, - }, - expectErr: nil, - expect: &callTrace{ - Type: "CALL", - From: randomAccounts[0].addr, - To: randomAccounts[2].addr, - Input: hexutil.Bytes(common.Hex2Bytes("8381f58a")), - Output: hexutil.Bytes(common.BigToHash(big.NewInt(123)).Bytes()), - Gas: newRPCUint64(24978936), - GasUsed: newRPCUint64(2283), - Value: (*hexutil.Big)(big.NewInt(0)), - }, - }, - } - for _, testspec := range testSuite { - result, err := api.TraceCall(context.Background(), testspec.call, rpc.BlockNumberOrHash{BlockNumber: &testspec.blockNumber}, testspec.config) - if testspec.expectErr != nil { - if err == nil { - t.Errorf("Expect error %v, get nothing", testspec.expectErr) - continue - } - if !errors.Is(err, testspec.expectErr) { - t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err) - } - } else { - if err != nil { - t.Errorf("Expect no error, get %v", err) - continue - } - ret := new(callTrace) - if err := json.Unmarshal(result.(json.RawMessage), ret); err != nil { - t.Fatalf("failed to unmarshal trace result: %v", err) - } - if !jsonEqual(ret, testspec.expect) { - // uncomment this for easier debugging - //have, _ := json.MarshalIndent(ret, "", " ") - //want, _ := json.MarshalIndent(testspec.expect, "", " ") - //t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want)) - t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, testspec.expect) - } - } - } -} - func TestTraceTransaction(t *testing.T) { t.Parallel() @@ -504,90 +363,177 @@ func TestTraceBlock(t *testing.T) { var testSuite = []struct { blockNumber rpc.BlockNumber config *TraceConfig - expect interface{} + want string expectErr error }{ // Trace genesis block, expect error { blockNumber: rpc.BlockNumber(0), - config: nil, - expect: nil, expectErr: errors.New("genesis is not traceable"), }, // Trace head block { blockNumber: rpc.BlockNumber(genBlocks), - config: nil, - expectErr: nil, - expect: []*txTraceResult{ - { - Result: ðapi.ExecutionResult{ - Gas: params.TxGas, - Failed: false, - ReturnValue: "", - StructLogs: []ethapi.StructLogRes{}, - }, - }, - }, + want: `[{"result":{"gas":21000,"failed":false,"returnValue":"","structLogs":[]}}]`, }, // Trace non-existent block { blockNumber: rpc.BlockNumber(genBlocks + 1), - config: nil, expectErr: fmt.Errorf("block #%d not found", genBlocks+1), - expect: nil, }, // Trace latest block { blockNumber: rpc.LatestBlockNumber, - config: nil, - expectErr: nil, - expect: []*txTraceResult{ - { - Result: ðapi.ExecutionResult{ - Gas: params.TxGas, - Failed: false, - ReturnValue: "", - StructLogs: []ethapi.StructLogRes{}, - }, + want: `[{"result":{"gas":21000,"failed":false,"returnValue":"","structLogs":[]}}]`, + }, + // Trace pending block + { + blockNumber: rpc.PendingBlockNumber, + want: `[{"result":{"gas":21000,"failed":false,"returnValue":"","structLogs":[]}}]`, + }, + } + for i, tc := range testSuite { + result, err := api.TraceBlockByNumber(context.Background(), tc.blockNumber, tc.config) + if tc.expectErr != nil { + if err == nil { + t.Errorf("test %d, want error %v", i, tc.expectErr) + continue + } + if !reflect.DeepEqual(err, tc.expectErr) { + t.Errorf("test %d: error mismatch, want %v, get %v", i, tc.expectErr, err) + } + continue + } + if err != nil { + t.Errorf("test %d, want no error, have %v", i, err) + continue + } + have, _ := json.Marshal(result) + want := tc.want + if string(have) != want { + t.Errorf("test %d, result mismatch, have\n%v\n, want\n%v\n", i, string(have), want) + } + } +} + +func TestTracingWithOverrides(t *testing.T) { + t.Parallel() + // Initialize test accounts + accounts := newAccounts(3) + genesis := &core.Genesis{Alloc: core.GenesisAlloc{ + accounts[0].addr: {Balance: big.NewInt(params.Ether)}, + accounts[1].addr: {Balance: big.NewInt(params.Ether)}, + accounts[2].addr: {Balance: big.NewInt(params.Ether)}, + }} + genBlocks := 10 + signer := types.HomesteadSigner{} + api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) { + // Transfer from account[0] to account[1] + // value: 1000 wei + // fee: 0 wei + tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key) + b.AddTx(tx) + })) + randomAccounts := newAccounts(3) + type res struct { + Gas int + Failed bool + returnValue string + } + var testSuite = []struct { + blockNumber rpc.BlockNumber + call ethapi.CallArgs + config *TraceCallConfig + expectErr error + want string + }{ + // Call which can only succeed if state is state overridden + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.CallArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: &TraceCallConfig{ + StateOverrides: ðapi.StateOverride{ + randomAccounts[0].addr: ethapi.OverrideAccount{Balance: newRPCBalance(new(big.Int).Mul(big.NewInt(1), big.NewInt(params.Ether)))}, }, }, + want: `{"gas":21000,"failed":false,"returnValue":""}`, }, - // Trace pending block + // Invalid call without state overriding + { + blockNumber: rpc.PendingBlockNumber, + call: ethapi.CallArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[1].addr, + Value: (*hexutil.Big)(big.NewInt(1000)), + }, + config: &TraceCallConfig{}, + expectErr: core.ErrInsufficientFundsForTransfer, + }, + // Successful simple contract call + // + // // SPDX-License-Identifier: GPL-3.0 + // + // pragma solidity >=0.7.0 <0.8.0; + // + // /** + // * @title Storage + // * @dev Store & retrieve value in a variable + // */ + // contract Storage { + // uint256 public number; + // constructor() { + // number = block.number; + // } + // } { blockNumber: rpc.PendingBlockNumber, - config: nil, - expectErr: nil, - expect: []*txTraceResult{ - { - Result: ðapi.ExecutionResult{ - Gas: params.TxGas, - Failed: false, - ReturnValue: "", - StructLogs: []ethapi.StructLogRes{}, + call: ethapi.CallArgs{ + From: &randomAccounts[0].addr, + To: &randomAccounts[2].addr, + Data: newRPCBytes(common.Hex2Bytes("8381f58a")), // call number() + }, + config: &TraceCallConfig{ + //Tracer: &tracer, + StateOverrides: ðapi.StateOverride{ + randomAccounts[2].addr: ethapi.OverrideAccount{ + Code: newRPCBytes(common.Hex2Bytes("6080604052348015600f57600080fd5b506004361060285760003560e01c80638381f58a14602d575b600080fd5b60336049565b6040518082815260200191505060405180910390f35b6000548156fea2646970667358221220eab35ffa6ab2adfe380772a48b8ba78e82a1b820a18fcb6f59aa4efb20a5f60064736f6c63430007040033")), + StateDiff: newStates([]common.Hash{{}}, []common.Hash{common.BigToHash(big.NewInt(123))}), }, }, }, + want: `{"gas":23347,"failed":false,"returnValue":"000000000000000000000000000000000000000000000000000000000000007b"}`, }, } - for _, testspec := range testSuite { - result, err := api.TraceBlockByNumber(context.Background(), testspec.blockNumber, testspec.config) - if testspec.expectErr != nil { + for i, tc := range testSuite { + result, err := api.TraceCall(context.Background(), tc.call, rpc.BlockNumberOrHash{BlockNumber: &tc.blockNumber}, tc.config) + if tc.expectErr != nil { if err == nil { - t.Errorf("Expect error %v, get nothing", testspec.expectErr) + t.Errorf("test %d: want error %v, have nothing", i, tc.expectErr) continue } - if !reflect.DeepEqual(err, testspec.expectErr) { - t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err) - } - } else { - if err != nil { - t.Errorf("Expect no error, get %v", err) - continue - } - if !reflect.DeepEqual(result, testspec.expect) { - t.Errorf("Result mismatch, want %v, get %v", testspec.expect, result) + if !errors.Is(err, tc.expectErr) { + t.Errorf("test %d: error mismatch, want %v, have %v", i, tc.expectErr, err) } + continue + } + if err != nil { + t.Errorf("test %d: want no error, have %v", i, err) + continue + } + // Turn result into res-struct + var ( + have res + want res + ) + resBytes, _ := json.Marshal(result) + json.Unmarshal(resBytes, &have) + json.Unmarshal([]byte(tc.want), &want) + if !reflect.DeepEqual(have, want) { + t.Errorf("test %d, result mismatch, have\n%v\n, want\n%v\n", i, string(resBytes), want) } } } @@ -618,11 +564,6 @@ func newRPCBalance(balance *big.Int) **hexutil.Big { return &rpcBalance } -func newRPCUint64(number uint64) *hexutil.Uint64 { - rpcUint64 := hexutil.Uint64(number) - return &rpcUint64 -} - func newRPCBytes(bytes []byte) *hexutil.Bytes { rpcBytes := hexutil.Bytes(bytes) return &rpcBytes diff --git a/eth/tracers/internal/tracers/call_tracer_js.js b/eth/tracers/internal/tracers/call_tracer_js.js new file mode 100644 index 000000000000..7da7bf216a25 --- /dev/null +++ b/eth/tracers/internal/tracers/call_tracer_js.js @@ -0,0 +1,112 @@ +// Copyright 2021 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 . + + +// callFrameTracer uses the new call frame tracing methods to report useful information +// about internal messages of a transaction. +{ + callstack: [{}], + fault: function(log, db) {}, + result: function(ctx, db) { + // Prepare outer message info + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + } + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error + } else if (ctx.error !== undefined) { + result.error = ctx.error + } + if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) { + delete result.output + } + + return this.finalize(result) + }, + enter: function(frame) { + var call = { + type: frame.getType(), + from: toHex(frame.getFrom()), + to: toHex(frame.getTo()), + input: toHex(frame.getInput()), + gas: '0x' + bigInt(frame.getGas()).toString('16'), + } + if (frame.getValue() !== undefined){ + call.value='0x' + bigInt(frame.getValue()).toString(16) + } + this.callstack.push(call) + }, + exit: function(frameResult) { + var len = this.callstack.length + if (len > 1) { + var call = this.callstack.pop() + call.gasUsed = '0x' + bigInt(frameResult.getGasUsed()).toString('16') + var error = frameResult.getError() + if (error === undefined) { + call.output = toHex(frameResult.getOutput()) + } else { + call.error = error + if (call.type === 'CREATE' || call.type === 'CREATE2') { + delete call.to + } + } + len -= 1 + if (this.callstack[len-1].calls === undefined) { + this.callstack[len-1].calls = [] + } + this.callstack[len-1].calls.push(call) + } + }, + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key] + } + } + if (sorted.calls !== undefined) { + for (var i=0; i. + +package tracetest + +import ( + "encoding/json" + "io/ioutil" + "math/big" + "path/filepath" + "reflect" + "strings" + "testing" + "unicode" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "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/types" + "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/eth/tracers" + "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/rlp" + "github.com/ethereum/go-ethereum/tests" + + // Force-load native and js pacakges, to trigger registration + _ "github.com/ethereum/go-ethereum/eth/tracers/js" + _ "github.com/ethereum/go-ethereum/eth/tracers/native" +) + +// To generate a new callTracer test, copy paste the makeTest method below into +// a Geth console and call it with a transaction hash you which to export. + +/* +// makeTest generates a callTracer test by running a prestate reassembled and a +// call trace run, assembling all the gathered information into a test case. +var makeTest = function(tx, rewind) { + // Generate the genesis block from the block, transaction and prestate data + var block = eth.getBlock(eth.getTransaction(tx).blockHash); + var genesis = eth.getBlock(block.parentHash); + + delete genesis.gasUsed; + delete genesis.logsBloom; + delete genesis.parentHash; + delete genesis.receiptsRoot; + delete genesis.sha3Uncles; + delete genesis.size; + delete genesis.transactions; + delete genesis.transactionsRoot; + delete genesis.uncles; + + genesis.gasLimit = genesis.gasLimit.toString(); + genesis.number = genesis.number.toString(); + genesis.timestamp = genesis.timestamp.toString(); + + genesis.alloc = debug.traceTransaction(tx, {tracer: "prestateTracer", rewind: rewind}); + for (var key in genesis.alloc) { + genesis.alloc[key].nonce = genesis.alloc[key].nonce.toString(); + } + genesis.config = admin.nodeInfo.protocols.eth.config; + + // Generate the call trace and produce the test input + var result = debug.traceTransaction(tx, {tracer: "callTracer", rewind: rewind}); + delete result.time; + + console.log(JSON.stringify({ + genesis: genesis, + context: { + number: block.number.toString(), + difficulty: block.difficulty, + timestamp: block.timestamp.toString(), + gasLimit: block.gasLimit.toString(), + miner: block.miner, + }, + input: eth.getRawTransaction(tx), + result: result, + }, null, 2)); +} +*/ + +type callContext struct { + Number math.HexOrDecimal64 `json:"number"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Time math.HexOrDecimal64 `json:"timestamp"` + GasLimit math.HexOrDecimal64 `json:"gasLimit"` + Miner common.Address `json:"miner"` +} + +// callTrace is the result of a callTracer run. +type callTrace struct { + Type string `json:"type"` + From common.Address `json:"from"` + To common.Address `json:"to"` + Input hexutil.Bytes `json:"input"` + Output hexutil.Bytes `json:"output"` + Gas *hexutil.Uint64 `json:"gas,omitempty"` + GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"` + Value *hexutil.Big `json:"value,omitempty"` + Error string `json:"error,omitempty"` + Calls []callTrace `json:"calls,omitempty"` +} + +// callTracerTest defines a single test to check the call tracer against. +type callTracerTest struct { + Genesis *core.Genesis `json:"genesis"` + Context *callContext `json:"context"` + Input string `json:"input"` + Result *callTrace `json:"result"` +} + +// Iterates over all the input-output datasets in the tracer test harness and +// runs the JavaScript tracers against them. +func TestCallTracerLegacy(t *testing.T) { + testCallTracer("callTracerLegacy", "call_tracer_legacy", t) +} + +func TestCallTracerJs(t *testing.T) { + testCallTracer("callTracerJs", "call_tracer", t) +} + +func TestCallTracerNative(t *testing.T) { + testCallTracer("callTracer", "call_tracer", t) +} + +func testCallTracer(tracerName string, dirPath string, t *testing.T) { + files, err := ioutil.ReadDir(filepath.Join("testdata", dirPath)) + if err != nil { + t.Fatalf("failed to retrieve tracer test suite: %v", err) + } + for _, file := range files { + if !strings.HasSuffix(file.Name(), ".json") { + continue + } + file := file // capture range variable + t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) { + t.Parallel() + + var ( + test = new(callTracerTest) + tx = new(types.Transaction) + ) + // Call tracer test found, read if from disk + if blob, err := ioutil.ReadFile(filepath.Join("testdata", dirPath, file.Name())); err != nil { + t.Fatalf("failed to read testcase: %v", err) + } else if err := json.Unmarshal(blob, test); err != nil { + t.Fatalf("failed to parse testcase: %v", err) + } + if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil { + t.Fatalf("failed to parse testcase input: %v", err) + } + // Configure a blockchain with the given prestate + var ( + signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number))) + origin, _ = signer.Sender(tx) + txContext = vm.TxContext{ + Origin: origin, + GasPrice: tx.GasPrice(), + } + context = vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: test.Context.Miner, + BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), + Time: new(big.Int).SetUint64(uint64(test.Context.Time)), + Difficulty: (*big.Int)(test.Context.Difficulty), + GasLimit: uint64(test.Context.GasLimit), + } + _, statedb = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) + ) + tracer, err := tracers.New(tracerName, new(tracers.Context)) + if err != nil { + t.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer}) + msg, err := tx.AsMessage(signer) + if err != nil { + t.Fatalf("failed to prepare transaction for tracing: %v", err) + } + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + t.Fatalf("failed to execute transaction: %v", err) + } + // Retrieve the trace result and compare against the etalon + res, err := tracer.GetResult() + if err != nil { + t.Fatalf("failed to retrieve trace result: %v", err) + } + ret := new(callTrace) + if err := json.Unmarshal(res, ret); err != nil { + t.Fatalf("failed to unmarshal trace result: %v", err) + } + + if !jsonEqual(ret, test.Result) { + // uncomment this for easier debugging + //have, _ := json.MarshalIndent(ret, "", " ") + //want, _ := json.MarshalIndent(test.Result, "", " ") + //t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want)) + t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result) + } + }) + } +} + +// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to +// comparison +func jsonEqual(x, y interface{}) bool { + xTrace := new(callTrace) + yTrace := new(callTrace) + if xj, err := json.Marshal(x); err == nil { + json.Unmarshal(xj, xTrace) + } else { + return false + } + if yj, err := json.Marshal(y); err == nil { + json.Unmarshal(yj, yTrace) + } else { + return false + } + return reflect.DeepEqual(xTrace, yTrace) +} + +// camel converts a snake cased input string into a camel cased output. +func camel(str string) string { + pieces := strings.Split(str, "_") + for i := 1; i < len(pieces); i++ { + pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] + } + return strings.Join(pieces, "") +} +func BenchmarkTracers(b *testing.B) { + files, err := ioutil.ReadDir(filepath.Join("testdata", "call_tracer")) + if err != nil { + b.Fatalf("failed to retrieve tracer test suite: %v", err) + } + for _, file := range files { + if !strings.HasSuffix(file.Name(), ".json") { + continue + } + file := file // capture range variable + b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) { + blob, err := ioutil.ReadFile(filepath.Join("testdata", "call_tracer", file.Name())) + if err != nil { + b.Fatalf("failed to read testcase: %v", err) + } + test := new(callTracerTest) + if err := json.Unmarshal(blob, test); err != nil { + b.Fatalf("failed to parse testcase: %v", err) + } + benchTracer("callTracerNative", test, b) + }) + } +} + +func benchTracer(tracerName string, test *callTracerTest, b *testing.B) { + // Configure a blockchain with the given prestate + tx := new(types.Transaction) + if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil { + b.Fatalf("failed to parse testcase input: %v", err) + } + signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number))) + msg, err := tx.AsMessage(signer) + if err != nil { + b.Fatalf("failed to prepare transaction for tracing: %v", err) + } + origin, _ := signer.Sender(tx) + txContext := vm.TxContext{ + Origin: origin, + GasPrice: tx.GasPrice(), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: test.Context.Miner, + BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), + Time: new(big.Int).SetUint64(uint64(test.Context.Time)), + Difficulty: (*big.Int)(test.Context.Difficulty), + GasLimit: uint64(test.Context.GasLimit), + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) + + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + tracer, err := tracers.New(tracerName, new(tracers.Context)) + if err != nil { + b.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer}) + snap := statedb.Snapshot() + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + b.Fatalf("failed to execute transaction: %v", err) + } + if _, err = tracer.GetResult(); err != nil { + b.Fatal(err) + } + statedb.RevertToSnapshot(snap) + } +} + +// TestZeroValueToNotExitCall tests the calltracer(s) on the following: +// Tx to A, A calls B with zero value. B does not already exist. +// Expected: that enter/exit is invoked and the inner call is shown in the result +func TestZeroValueToNotExitCall(t *testing.T) { + var to = common.HexToAddress("0x00000000000000000000000000000000deadbeef") + privkey, err := crypto.HexToECDSA("0000000000000000deadbeef00000000000000000000000000000000deadbeef") + if err != nil { + t.Fatalf("err %v", err) + } + signer := types.NewEIP155Signer(big.NewInt(1)) + tx, err := types.SignNewTx(privkey, signer, &types.LegacyTx{ + GasPrice: big.NewInt(0), + Gas: 50000, + To: &to, + }) + if err != nil { + t.Fatalf("err %v", err) + } + origin, _ := signer.Sender(tx) + txContext := vm.TxContext{ + Origin: origin, + GasPrice: big.NewInt(1), + } + context := vm.BlockContext{ + CanTransfer: core.CanTransfer, + Transfer: core.Transfer, + Coinbase: common.Address{}, + BlockNumber: new(big.Int).SetUint64(8000000), + Time: new(big.Int).SetUint64(5), + Difficulty: big.NewInt(0x30000), + GasLimit: uint64(6000000), + } + var code = []byte{ + byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), // in and outs zero + byte(vm.DUP1), byte(vm.PUSH1), 0xff, byte(vm.GAS), // value=0,address=0xff, gas=GAS + byte(vm.CALL), + } + var alloc = core.GenesisAlloc{ + to: core.GenesisAccount{ + Nonce: 1, + Code: code, + }, + origin: core.GenesisAccount{ + Nonce: 0, + Balance: big.NewInt(500000000000000), + }, + } + _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) + // Create the tracer, the EVM environment and run it + tracer, err := tracers.New("callTracer", nil) + if err != nil { + t.Fatalf("failed to create call tracer: %v", err) + } + evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tracer}) + msg, err := tx.AsMessage(signer) + if err != nil { + t.Fatalf("failed to prepare transaction for tracing: %v", err) + } + st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) + if _, err = st.TransitionDb(); err != nil { + t.Fatalf("failed to execute transaction: %v", err) + } + // Retrieve the trace result and compare against the etalon + res, err := tracer.GetResult() + if err != nil { + t.Fatalf("failed to retrieve trace result: %v", err) + } + have := new(callTrace) + if err := json.Unmarshal(res, have); err != nil { + t.Fatalf("failed to unmarshal trace result: %v", err) + } + wantStr := `{"type":"CALL","from":"0x682a80a6f560eec50d54e63cbeda1c324c5f8d1b","to":"0x00000000000000000000000000000000deadbeef","value":"0x0","gas":"0x7148","gasUsed":"0x2d0","input":"0x","output":"0x","calls":[{"type":"CALL","from":"0x00000000000000000000000000000000deadbeef","to":"0x00000000000000000000000000000000000000ff","value":"0x0","gas":"0x6cbf","gasUsed":"0x0","input":"0x","output":"0x"}]}` + want := new(callTrace) + json.Unmarshal([]byte(wantStr), want) + if !jsonEqual(have, want) { + t.Error("have != want") + } +} diff --git a/eth/tracers/testdata/call_tracer_create.json b/eth/tracers/internal/tracetest/testdata/call_tracer/create.json similarity index 100% rename from eth/tracers/testdata/call_tracer_create.json rename to eth/tracers/internal/tracetest/testdata/call_tracer/create.json diff --git a/eth/tracers/testdata/call_tracer_deep_calls.json b/eth/tracers/internal/tracetest/testdata/call_tracer/deep_calls.json similarity index 100% rename from eth/tracers/testdata/call_tracer_deep_calls.json rename to eth/tracers/internal/tracetest/testdata/call_tracer/deep_calls.json diff --git a/eth/tracers/testdata/call_tracer_delegatecall.json b/eth/tracers/internal/tracetest/testdata/call_tracer/delegatecall.json similarity index 100% rename from eth/tracers/testdata/call_tracer_delegatecall.json rename to eth/tracers/internal/tracetest/testdata/call_tracer/delegatecall.json diff --git a/eth/tracers/internal/tracetest/testdata/call_tracer/inner_create_oog_outer_throw.json b/eth/tracers/internal/tracetest/testdata/call_tracer/inner_create_oog_outer_throw.json new file mode 100644 index 000000000000..9395eb401c2a --- /dev/null +++ b/eth/tracers/internal/tracetest/testdata/call_tracer/inner_create_oog_outer_throw.json @@ -0,0 +1,77 @@ +{ + "context": { + "difficulty": "3451177886", + "gasLimit": "4709286", + "miner": "0x1585936b53834b021f68cc13eeefdec2efc8e724", + "number": "2290744", + "timestamp": "1513616439" + }, + "genesis": { + "alloc": { + "0x1d3ddf7caf024f253487e18bc4a15b1a360c170a": { + "balance": "0x0", + "code": 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"nonce": "1", + "storage": {} + }, + "0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": { + "balance": "0x1780d77678137ac1b775", + "code": "0x", + "nonce": "29072", + "storage": {} + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "daoForkSupport": true, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "3509749784", + "extraData": "0x4554482e45544846414e532e4f52472d4641313738394444", + "gasLimit": "4727564", + "hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440", + "miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3", + "mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada", + "nonce": "0x4eb12e19c16d43da", + "number": "2289805", + "stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f", + "timestamp": "1513601261", + "totalDifficulty": 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100% rename from eth/tracers/testdata/call_tracer_simple.json rename to eth/tracers/internal/tracetest/testdata/call_tracer_legacy/simple.json diff --git a/eth/tracers/internal/tracetest/testdata/call_tracer_legacy/throw.json b/eth/tracers/internal/tracetest/testdata/call_tracer_legacy/throw.json new file mode 100644 index 000000000000..09cf449776fb --- /dev/null +++ b/eth/tracers/internal/tracetest/testdata/call_tracer_legacy/throw.json @@ -0,0 +1,62 @@ +{ + "context": { + "difficulty": "117009631", + "gasLimit": "4712388", + "miner": "0x294e5d6c39a36ce38af1dca70c1060f78dee8070", + "number": "25009", + "timestamp": "1479891666" + }, + "genesis": { + "alloc": { + "0x70c9217d814985faef62b124420f8dfbddd96433": { + "balance": "0x4ecd70668f5d854a", + "code": "0x", + "nonce": "1638", + "storage": {} + }, + "0xc212e03b9e060e36facad5fd8f4435412ca22e6b": { + "balance": "0x0", + "code": 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+ "nonce": "1", + "storage": { + "0x0000000000000000000000000000000000000000000000000000000000000001": "0x0000000000000000000000002cccf5e0538493c235d1c5ef6580f77d99e91396", + "0x0000000000000000000000000000000000000000000000000000000000000002": "0x00000000000000000000000000000000000000000000000000000000000061a9", + "0x0000000000000000000000000000000000000000000000000000000000000005": "0x00000000000000000000000070c9217d814985faef62b124420f8dfbddd96433" + } + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "daoForkSupport": true, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "117066792", + "extraData": "0xd783010502846765746887676f312e372e33856c696e7578", + "gasLimit": "4712388", + "hash": "0xe23e8d4562a1045b70cbc99fefb20c101a8f0fc8559a80d65fea8896e2f1d46e", + "miner": "0x71842f946b98800fe6feb49f0ae4e253259031c9", + "mixHash": "0x0aada9d6e93dd4db0d09c0488dc0a048fca2ccdc1f3fc7b83ba2a8d393a3a4ff", + "nonce": "0x70849d5838dee2e9", + "number": "25008", + "stateRoot": "0x1e01d2161794768c5b917069e73d86e8dca80cd7f3168c0597de420ab93a3b7b", + "timestamp": "1479891641", + "totalDifficulty": "1896347038589" + }, + "input": "0xf88b8206668504a817c8008303d09094c212e03b9e060e36facad5fd8f4435412ca22e6b80a451a34eb8000000000000000000000000000000000000000000000027fad02094277c000029a0692a3b4e7b2842f8dd7832e712c21e09f451f416c8976d5b8d02e8c0c2b4bea9a07645e90fc421b63dd755767fd93d3c03b4ec0c4d8fafa059558d08cf11d59750", + "result": { + "error": "invalid jump destination", + "from": "0x70c9217d814985faef62b124420f8dfbddd96433", + "gas": "0x37b38", + "gasUsed": "0x37b38", + "input": "0x51a34eb8000000000000000000000000000000000000000000000027fad02094277c0000", + "to": "0xc212e03b9e060e36facad5fd8f4435412ca22e6b", + "type": "CALL", + "value": "0x0" + } +} diff --git a/eth/tracers/tracer.go b/eth/tracers/js/bigint.go similarity index 57% rename from eth/tracers/tracer.go rename to eth/tracers/js/bigint.go index ba6592537300..9aeb3304209f 100644 --- a/eth/tracers/tracer.go +++ b/eth/tracers/js/bigint.go @@ -1,4 +1,4 @@ -// Copyright 2017 The go-ethereum Authors +// Copyright 2021 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 @@ -14,639 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package tracers - -import ( - "encoding/json" - "errors" - "fmt" - "math/big" - "sync/atomic" - "time" - "unsafe" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" - "github.com/ethereum/go-ethereum/core" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/log" - "gopkg.in/olebedev/go-duktape.v3" -) +package js // bigIntegerJS is the minified version of https://github.com/peterolson/BigInteger.js. const bigIntegerJS = `var bigInt=function(undefined){"use strict";var BASE=1e7,LOG_BASE=7,MAX_INT=9007199254740992,MAX_INT_ARR=smallToArray(MAX_INT),LOG_MAX_INT=Math.log(MAX_INT);function Integer(v,radix){if(typeof v==="undefined")return Integer[0];if(typeof radix!=="undefined")return+radix===10?parseValue(v):parseBase(v,radix);return parseValue(v)}function BigInteger(value,sign){this.value=value;this.sign=sign;this.isSmall=false}BigInteger.prototype=Object.create(Integer.prototype);function SmallInteger(value){this.value=value;this.sign=value<0;this.isSmall=true}SmallInteger.prototype=Object.create(Integer.prototype);function isPrecise(n){return-MAX_INT0)return Math.floor(n);return Math.ceil(n)}function add(a,b){var l_a=a.length,l_b=b.length,r=new Array(l_a),carry=0,base=BASE,sum,i;for(i=0;i=base?1:0;r[i]=sum-carry*base}while(i0)r.push(carry);return r}function addAny(a,b){if(a.length>=b.length)return add(a,b);return add(b,a)}function addSmall(a,carry){var l=a.length,r=new Array(l),base=BASE,sum,i;for(i=0;i0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}BigInteger.prototype.add=function(v){var n=parseValue(v);if(this.sign!==n.sign){return this.subtract(n.negate())}var a=this.value,b=n.value;if(n.isSmall){return new BigInteger(addSmall(a,Math.abs(b)),this.sign)}return new BigInteger(addAny(a,b),this.sign)};BigInteger.prototype.plus=BigInteger.prototype.add;SmallInteger.prototype.add=function(v){var n=parseValue(v);var a=this.value;if(a<0!==n.sign){return this.subtract(n.negate())}var b=n.value;if(n.isSmall){if(isPrecise(a+b))return new SmallInteger(a+b);b=smallToArray(Math.abs(b))}return new BigInteger(addSmall(b,Math.abs(a)),a<0)};SmallInteger.prototype.plus=SmallInteger.prototype.add;function subtract(a,b){var a_l=a.length,b_l=b.length,r=new Array(a_l),borrow=0,base=BASE,i,difference;for(i=0;i=0){value=subtract(a,b)}else{value=subtract(b,a);sign=!sign}value=arrayToSmall(value);if(typeof value==="number"){if(sign)value=-value;return new SmallInteger(value)}return new BigInteger(value,sign)}function subtractSmall(a,b,sign){var l=a.length,r=new Array(l),carry=-b,base=BASE,i,difference;for(i=0;i=0)};SmallInteger.prototype.minus=SmallInteger.prototype.subtract;BigInteger.prototype.negate=function(){return new BigInteger(this.value,!this.sign)};SmallInteger.prototype.negate=function(){var sign=this.sign;var small=new SmallInteger(-this.value);small.sign=!sign;return small};BigInteger.prototype.abs=function(){return new BigInteger(this.value,false)};SmallInteger.prototype.abs=function(){return new SmallInteger(Math.abs(this.value))};function multiplyLong(a,b){var a_l=a.length,b_l=b.length,l=a_l+b_l,r=createArray(l),base=BASE,product,carry,i,a_i,b_j;for(i=0;i0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}function shiftLeft(x,n){var r=[];while(n-- >0)r.push(0);return r.concat(x)}function multiplyKaratsuba(x,y){var n=Math.max(x.length,y.length);if(n<=30)return multiplyLong(x,y);n=Math.ceil(n/2);var b=x.slice(n),a=x.slice(0,n),d=y.slice(n),c=y.slice(0,n);var ac=multiplyKaratsuba(a,c),bd=multiplyKaratsuba(b,d),abcd=multiplyKaratsuba(addAny(a,b),addAny(c,d));var product=addAny(addAny(ac,shiftLeft(subtract(subtract(abcd,ac),bd),n)),shiftLeft(bd,2*n));trim(product);return product}function useKaratsuba(l1,l2){return-.012*l1-.012*l2+15e-6*l1*l2>0}BigInteger.prototype.multiply=function(v){var n=parseValue(v),a=this.value,b=n.value,sign=this.sign!==n.sign,abs;if(n.isSmall){if(b===0)return Integer[0];if(b===1)return this;if(b===-1)return this.negate();abs=Math.abs(b);if(abs=0;shift--){quotientDigit=base-1;if(remainder[shift+b_l]!==divisorMostSignificantDigit){quotientDigit=Math.floor((remainder[shift+b_l]*base+remainder[shift+b_l-1])/divisorMostSignificantDigit)}carry=0;borrow=0;l=divisor.length;for(i=0;ib_l){highx=(highx+1)*base}guess=Math.ceil(highx/highy);do{check=multiplySmall(b,guess);if(compareAbs(check,part)<=0)break;guess--}while(guess);result.push(guess);part=subtract(part,check)}result.reverse();return[arrayToSmall(result),arrayToSmall(part)]}function divModSmall(value,lambda){var length=value.length,quotient=createArray(length),base=BASE,i,q,remainder,divisor;remainder=0;for(i=length-1;i>=0;--i){divisor=remainder*base+value[i];q=truncate(divisor/lambda);remainder=divisor-q*lambda;quotient[i]=q|0}return[quotient,remainder|0]}function divModAny(self,v){var value,n=parseValue(v);var a=self.value,b=n.value;var quotient;if(b===0)throw new Error("Cannot divide by zero");if(self.isSmall){if(n.isSmall){return[new SmallInteger(truncate(a/b)),new SmallInteger(a%b)]}return[Integer[0],self]}if(n.isSmall){if(b===1)return[self,Integer[0]];if(b==-1)return[self.negate(),Integer[0]];var abs=Math.abs(b);if(absb.length?1:-1}for(var i=a.length-1;i>=0;i--){if(a[i]!==b[i])return a[i]>b[i]?1:-1}return 0}BigInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall)return 1;return compareAbs(a,b)};SmallInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=Math.abs(this.value),b=n.value;if(n.isSmall){b=Math.abs(b);return a===b?0:a>b?1:-1}return-1};BigInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(this.sign!==n.sign){return n.sign?1:-1}if(n.isSmall){return this.sign?-1:1}return compareAbs(a,b)*(this.sign?-1:1)};BigInteger.prototype.compareTo=BigInteger.prototype.compare;SmallInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall){return a==b?0:a>b?1:-1}if(a<0!==n.sign){return a<0?-1:1}return a<0?1:-1};SmallInteger.prototype.compareTo=SmallInteger.prototype.compare;BigInteger.prototype.equals=function(v){return this.compare(v)===0};SmallInteger.prototype.eq=SmallInteger.prototype.equals=BigInteger.prototype.eq=BigInteger.prototype.equals;BigInteger.prototype.notEquals=function(v){return this.compare(v)!==0};SmallInteger.prototype.neq=SmallInteger.prototype.notEquals=BigInteger.prototype.neq=BigInteger.prototype.notEquals;BigInteger.prototype.greater=function(v){return this.compare(v)>0};SmallInteger.prototype.gt=SmallInteger.prototype.greater=BigInteger.prototype.gt=BigInteger.prototype.greater;BigInteger.prototype.lesser=function(v){return this.compare(v)<0};SmallInteger.prototype.lt=SmallInteger.prototype.lesser=BigInteger.prototype.lt=BigInteger.prototype.lesser;BigInteger.prototype.greaterOrEquals=function(v){return this.compare(v)>=0};SmallInteger.prototype.geq=SmallInteger.prototype.greaterOrEquals=BigInteger.prototype.geq=BigInteger.prototype.greaterOrEquals;BigInteger.prototype.lesserOrEquals=function(v){return this.compare(v)<=0};SmallInteger.prototype.leq=SmallInteger.prototype.lesserOrEquals=BigInteger.prototype.leq=BigInteger.prototype.lesserOrEquals;BigInteger.prototype.isEven=function(){return(this.value[0]&1)===0};SmallInteger.prototype.isEven=function(){return(this.value&1)===0};BigInteger.prototype.isOdd=function(){return(this.value[0]&1)===1};SmallInteger.prototype.isOdd=function(){return(this.value&1)===1};BigInteger.prototype.isPositive=function(){return!this.sign};SmallInteger.prototype.isPositive=function(){return this.value>0};BigInteger.prototype.isNegative=function(){return this.sign};SmallInteger.prototype.isNegative=function(){return this.value<0};BigInteger.prototype.isUnit=function(){return false};SmallInteger.prototype.isUnit=function(){return Math.abs(this.value)===1};BigInteger.prototype.isZero=function(){return false};SmallInteger.prototype.isZero=function(){return this.value===0};BigInteger.prototype.isDivisibleBy=function(v){var n=parseValue(v);var value=n.value;if(value===0)return false;if(value===1)return true;if(value===2)return this.isEven();return this.mod(n).equals(Integer[0])};SmallInteger.prototype.isDivisibleBy=BigInteger.prototype.isDivisibleBy;function isBasicPrime(v){var n=v.abs();if(n.isUnit())return false;if(n.equals(2)||n.equals(3)||n.equals(5))return true;if(n.isEven()||n.isDivisibleBy(3)||n.isDivisibleBy(5))return false;if(n.lesser(25))return true}BigInteger.prototype.isPrime=function(){var isPrime=isBasicPrime(this);if(isPrime!==undefined)return isPrime;var n=this.abs(),nPrev=n.prev();var a=[2,3,5,7,11,13,17,19],b=nPrev,d,t,i,x;while(b.isEven())b=b.divide(2);for(i=0;i-MAX_INT)return new SmallInteger(value-1);return new BigInteger(MAX_INT_ARR,true)};var powersOfTwo=[1];while(2*powersOfTwo[powersOfTwo.length-1]<=BASE)powersOfTwo.push(2*powersOfTwo[powersOfTwo.length-1]);var powers2Length=powersOfTwo.length,highestPower2=powersOfTwo[powers2Length-1];function shift_isSmall(n){return(typeof n==="number"||typeof n==="string")&&+Math.abs(n)<=BASE||n instanceof BigInteger&&n.value.length<=1}BigInteger.prototype.shiftLeft=function(n){if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftRight(-n);var result=this;while(n>=powers2Length){result=result.multiply(highestPower2);n-=powers2Length-1}return result.multiply(powersOfTwo[n])};SmallInteger.prototype.shiftLeft=BigInteger.prototype.shiftLeft;BigInteger.prototype.shiftRight=function(n){var remQuo;if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftLeft(-n);var result=this;while(n>=powers2Length){if(result.isZero())return result;remQuo=divModAny(result,highestPower2);result=remQuo[1].isNegative()?remQuo[0].prev():remQuo[0];n-=powers2Length-1}remQuo=divModAny(result,powersOfTwo[n]);return remQuo[1].isNegative()?remQuo[0].prev():remQuo[0]};SmallInteger.prototype.shiftRight=BigInteger.prototype.shiftRight;function bitwise(x,y,fn){y=parseValue(y);var xSign=x.isNegative(),ySign=y.isNegative();var xRem=xSign?x.not():x,yRem=ySign?y.not():y;var xDigit=0,yDigit=0;var xDivMod=null,yDivMod=null;var result=[];while(!xRem.isZero()||!yRem.isZero()){xDivMod=divModAny(xRem,highestPower2);xDigit=xDivMod[1].toJSNumber();if(xSign){xDigit=highestPower2-1-xDigit}yDivMod=divModAny(yRem,highestPower2);yDigit=yDivMod[1].toJSNumber();if(ySign){yDigit=highestPower2-1-yDigit}xRem=xDivMod[0];yRem=yDivMod[0];result.push(fn(xDigit,yDigit))}var sum=fn(xSign?1:0,ySign?1:0)!==0?bigInt(-1):bigInt(0);for(var i=result.length-1;i>=0;i-=1){sum=sum.multiply(highestPower2).add(bigInt(result[i]))}return sum}BigInteger.prototype.not=function(){return this.negate().prev()};SmallInteger.prototype.not=BigInteger.prototype.not;BigInteger.prototype.and=function(n){return bitwise(this,n,function(a,b){return a&b})};SmallInteger.prototype.and=BigInteger.prototype.and;BigInteger.prototype.or=function(n){return bitwise(this,n,function(a,b){return a|b})};SmallInteger.prototype.or=BigInteger.prototype.or;BigInteger.prototype.xor=function(n){return bitwise(this,n,function(a,b){return a^b})};SmallInteger.prototype.xor=BigInteger.prototype.xor;var LOBMASK_I=1<<30,LOBMASK_BI=(BASE&-BASE)*(BASE&-BASE)|LOBMASK_I;function roughLOB(n){var v=n.value,x=typeof v==="number"?v|LOBMASK_I:v[0]+v[1]*BASE|LOBMASK_BI;return x&-x}function max(a,b){a=parseValue(a);b=parseValue(b);return a.greater(b)?a:b}function min(a,b){a=parseValue(a);b=parseValue(b);return a.lesser(b)?a:b}function gcd(a,b){a=parseValue(a).abs();b=parseValue(b).abs();if(a.equals(b))return a;if(a.isZero())return b;if(b.isZero())return a;var c=Integer[1],d,t;while(a.isEven()&&b.isEven()){d=Math.min(roughLOB(a),roughLOB(b));a=a.divide(d);b=b.divide(d);c=c.multiply(d)}while(a.isEven()){a=a.divide(roughLOB(a))}do{while(b.isEven()){b=b.divide(roughLOB(b))}if(a.greater(b)){t=b;b=a;a=t}b=b.subtract(a)}while(!b.isZero());return c.isUnit()?a:a.multiply(c)}function lcm(a,b){a=parseValue(a).abs();b=parseValue(b).abs();return a.divide(gcd(a,b)).multiply(b)}function randBetween(a,b){a=parseValue(a);b=parseValue(b);var low=min(a,b),high=max(a,b);var range=high.subtract(low).add(1);if(range.isSmall)return low.add(Math.floor(Math.random()*range));var length=range.value.length-1;var result=[],restricted=true;for(var i=length;i>=0;i--){var top=restricted?range.value[i]:BASE;var digit=truncate(Math.random()*top);result.unshift(digit);if(digit=absBase){if(c==="1"&&absBase===1)continue;throw new Error(c+" is not a valid digit in base "+base+".")}else if(c.charCodeAt(0)-87>=absBase){throw new Error(c+" is not a valid digit in base "+base+".")}}}if(2<=base&&base<=36){if(length<=LOG_MAX_INT/Math.log(base)){var result=parseInt(text,base);if(isNaN(result)){throw new Error(c+" is not a valid digit in base "+base+".")}return new SmallInteger(parseInt(text,base))}}base=parseValue(base);var digits=[];var isNegative=text[0]==="-";for(i=isNegative?1:0;i");digits.push(parseValue(text.slice(start+1,i)))}else throw new Error(c+" is not a valid character")}return parseBaseFromArray(digits,base,isNegative)};function parseBaseFromArray(digits,base,isNegative){var val=Integer[0],pow=Integer[1],i;for(i=digits.length-1;i>=0;i--){val=val.add(digits[i].times(pow));pow=pow.times(base)}return isNegative?val.negate():val}function stringify(digit){var v=digit.value;if(typeof v==="number")v=[v];if(v.length===1&&v[0]<=35){return"0123456789abcdefghijklmnopqrstuvwxyz".charAt(v[0])}return"<"+v+">"}function toBase(n,base){base=bigInt(base);if(base.isZero()){if(n.isZero())return"0";throw new Error("Cannot convert nonzero numbers to base 0.")}if(base.equals(-1)){if(n.isZero())return"0";if(n.isNegative())return new Array(1-n).join("10");return"1"+new Array(+n).join("01")}var minusSign="";if(n.isNegative()&&base.isPositive()){minusSign="-";n=n.abs()}if(base.equals(1)){if(n.isZero())return"0";return minusSign+new Array(+n+1).join(1)}var out=[];var left=n,divmod;while(left.isNegative()||left.compareAbs(base)>=0){divmod=left.divmod(base);left=divmod.quotient;var digit=divmod.remainder;if(digit.isNegative()){digit=base.minus(digit).abs();left=left.next()}out.push(stringify(digit))}out.push(stringify(left));return minusSign+out.reverse().join("")}BigInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!==10)return toBase(this,radix);var v=this.value,l=v.length,str=String(v[--l]),zeros="0000000",digit;while(--l>=0){digit=String(v[l]);str+=zeros.slice(digit.length)+digit}var sign=this.sign?"-":"";return sign+str};SmallInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!=10)return toBase(this,radix);return String(this.value)};BigInteger.prototype.toJSON=SmallInteger.prototype.toJSON=function(){return this.toString()};BigInteger.prototype.valueOf=function(){return+this.toString()};BigInteger.prototype.toJSNumber=BigInteger.prototype.valueOf;SmallInteger.prototype.valueOf=function(){return this.value};SmallInteger.prototype.toJSNumber=SmallInteger.prototype.valueOf;function parseStringValue(v){if(isPrecise(+v)){var x=+v;if(x===truncate(x))return new SmallInteger(x);throw"Invalid integer: "+v}var sign=v[0]==="-";if(sign)v=v.slice(1);var split=v.split(/e/i);if(split.length>2)throw new Error("Invalid integer: "+split.join("e"));if(split.length===2){var exp=split[1];if(exp[0]==="+")exp=exp.slice(1);exp=+exp;if(exp!==truncate(exp)||!isPrecise(exp))throw new Error("Invalid integer: "+exp+" is not a valid exponent.");var text=split[0];var decimalPlace=text.indexOf(".");if(decimalPlace>=0){exp-=text.length-decimalPlace-1;text=text.slice(0,decimalPlace)+text.slice(decimalPlace+1)}if(exp<0)throw new Error("Cannot include negative exponent part for integers");text+=new Array(exp+1).join("0");v=text}var isValid=/^([0-9][0-9]*)$/.test(v);if(!isValid)throw new Error("Invalid integer: "+v);var r=[],max=v.length,l=LOG_BASE,min=max-l;while(max>0){r.push(+v.slice(min,max));min-=l;if(min<0)min=0;max-=l}trim(r);return new BigInteger(r,sign)}function parseNumberValue(v){if(isPrecise(v)){if(v!==truncate(v))throw new Error(v+" is not an integer.");return new SmallInteger(v)}return parseStringValue(v.toString())}function parseValue(v){if(typeof v==="number"){return parseNumberValue(v)}if(typeof v==="string"){return parseStringValue(v)}return v}for(var i=0;i<1e3;i++){Integer[i]=new SmallInteger(i);if(i>0)Integer[-i]=new SmallInteger(-i)}Integer.one=Integer[1];Integer.zero=Integer[0];Integer.minusOne=Integer[-1];Integer.max=max;Integer.min=min;Integer.gcd=gcd;Integer.lcm=lcm;Integer.isInstance=function(x){return x instanceof BigInteger||x instanceof SmallInteger};Integer.randBetween=randBetween;Integer.fromArray=function(digits,base,isNegative){return parseBaseFromArray(digits.map(parseValue),parseValue(base||10),isNegative)};return Integer}();if(typeof module!=="undefined"&&module.hasOwnProperty("exports")){module.exports=bigInt}if(typeof define==="function"&&define.amd){define("big-integer",[],function(){return bigInt})}; bigInt` - -// makeSlice convert an unsafe memory pointer with the given type into a Go byte -// slice. -// -// Note, the returned slice uses the same memory area as the input arguments. -// If those are duktape stack items, popping them off **will** make the slice -// contents change. -func makeSlice(ptr unsafe.Pointer, size uint) []byte { - var sl = struct { - addr uintptr - len int - cap int - }{uintptr(ptr), int(size), int(size)} - - return *(*[]byte)(unsafe.Pointer(&sl)) -} - -// popSlice pops a buffer off the JavaScript stack and returns it as a slice. -func popSlice(ctx *duktape.Context) []byte { - blob := common.CopyBytes(makeSlice(ctx.GetBuffer(-1))) - ctx.Pop() - return blob -} - -// pushBigInt create a JavaScript BigInteger in the VM. -func pushBigInt(n *big.Int, ctx *duktape.Context) { - ctx.GetGlobalString("bigInt") - ctx.PushString(n.String()) - ctx.Call(1) -} - -// opWrapper provides a JavaScript wrapper around OpCode. -type opWrapper struct { - op vm.OpCode -} - -// pushObject assembles a JSVM object wrapping a swappable opcode and pushes it -// onto the VM stack. -func (ow *opWrapper) pushObject(vm *duktape.Context) { - obj := vm.PushObject() - - vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(int(ow.op)); return 1 }) - vm.PutPropString(obj, "toNumber") - - vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushString(ow.op.String()); return 1 }) - vm.PutPropString(obj, "toString") - - vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushBoolean(ow.op.IsPush()); return 1 }) - vm.PutPropString(obj, "isPush") -} - -// memoryWrapper provides a JavaScript wrapper around vm.Memory. -type memoryWrapper struct { - memory *vm.Memory -} - -// slice returns the requested range of memory as a byte slice. -func (mw *memoryWrapper) slice(begin, end int64) []byte { - if end == begin { - return []byte{} - } - if end < begin || begin < 0 { - // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go - // runtime goes belly up https://github.com/golang/go/issues/15639. - log.Warn("Tracer accessed out of bound memory", "offset", begin, "end", end) - return nil - } - if mw.memory.Len() < int(end) { - // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go - // runtime goes belly up https://github.com/golang/go/issues/15639. - log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", begin, "size", end-begin) - return nil - } - return mw.memory.GetCopy(begin, end-begin) -} - -// getUint returns the 32 bytes at the specified address interpreted as a uint. -func (mw *memoryWrapper) getUint(addr int64) *big.Int { - if mw.memory.Len() < int(addr)+32 || addr < 0 { - // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go - // runtime goes belly up https://github.com/golang/go/issues/15639. - log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", addr, "size", 32) - return new(big.Int) - } - return new(big.Int).SetBytes(mw.memory.GetPtr(addr, 32)) -} - -// pushObject assembles a JSVM object wrapping a swappable memory and pushes it -// onto the VM stack. -func (mw *memoryWrapper) pushObject(vm *duktape.Context) { - obj := vm.PushObject() - - // Generate the `slice` method which takes two ints and returns a buffer - vm.PushGoFunction(func(ctx *duktape.Context) int { - blob := mw.slice(int64(ctx.GetInt(-2)), int64(ctx.GetInt(-1))) - ctx.Pop2() - - ptr := ctx.PushFixedBuffer(len(blob)) - copy(makeSlice(ptr, uint(len(blob))), blob) - return 1 - }) - vm.PutPropString(obj, "slice") - - // Generate the `getUint` method which takes an int and returns a bigint - vm.PushGoFunction(func(ctx *duktape.Context) int { - offset := int64(ctx.GetInt(-1)) - ctx.Pop() - - pushBigInt(mw.getUint(offset), ctx) - return 1 - }) - vm.PutPropString(obj, "getUint") -} - -// stackWrapper provides a JavaScript wrapper around vm.Stack. -type stackWrapper struct { - stack *vm.Stack -} - -// peek returns the nth-from-the-top element of the stack. -func (sw *stackWrapper) peek(idx int) *big.Int { - if len(sw.stack.Data()) <= idx || idx < 0 { - // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go - // runtime goes belly up https://github.com/golang/go/issues/15639. - log.Warn("Tracer accessed out of bound stack", "size", len(sw.stack.Data()), "index", idx) - return new(big.Int) - } - return sw.stack.Back(idx).ToBig() -} - -// pushObject assembles a JSVM object wrapping a swappable stack and pushes it -// onto the VM stack. -func (sw *stackWrapper) pushObject(vm *duktape.Context) { - obj := vm.PushObject() - - vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(len(sw.stack.Data())); return 1 }) - vm.PutPropString(obj, "length") - - // Generate the `peek` method which takes an int and returns a bigint - vm.PushGoFunction(func(ctx *duktape.Context) int { - offset := ctx.GetInt(-1) - ctx.Pop() - - pushBigInt(sw.peek(offset), ctx) - return 1 - }) - vm.PutPropString(obj, "peek") -} - -// dbWrapper provides a JavaScript wrapper around vm.Database. -type dbWrapper struct { - db vm.StateDB -} - -// pushObject assembles a JSVM object wrapping a swappable database and pushes it -// onto the VM stack. -func (dw *dbWrapper) pushObject(vm *duktape.Context) { - obj := vm.PushObject() - - // Push the wrapper for statedb.GetBalance - vm.PushGoFunction(func(ctx *duktape.Context) int { - pushBigInt(dw.db.GetBalance(common.BytesToAddress(popSlice(ctx))), ctx) - return 1 - }) - vm.PutPropString(obj, "getBalance") - - // Push the wrapper for statedb.GetNonce - vm.PushGoFunction(func(ctx *duktape.Context) int { - ctx.PushInt(int(dw.db.GetNonce(common.BytesToAddress(popSlice(ctx))))) - return 1 - }) - vm.PutPropString(obj, "getNonce") - - // Push the wrapper for statedb.GetCode - vm.PushGoFunction(func(ctx *duktape.Context) int { - code := dw.db.GetCode(common.BytesToAddress(popSlice(ctx))) - - ptr := ctx.PushFixedBuffer(len(code)) - copy(makeSlice(ptr, uint(len(code))), code) - return 1 - }) - vm.PutPropString(obj, "getCode") - - // Push the wrapper for statedb.GetState - vm.PushGoFunction(func(ctx *duktape.Context) int { - hash := popSlice(ctx) - addr := popSlice(ctx) - - state := dw.db.GetState(common.BytesToAddress(addr), common.BytesToHash(hash)) - - ptr := ctx.PushFixedBuffer(len(state)) - copy(makeSlice(ptr, uint(len(state))), state[:]) - return 1 - }) - vm.PutPropString(obj, "getState") - - // Push the wrapper for statedb.Exists - vm.PushGoFunction(func(ctx *duktape.Context) int { - ctx.PushBoolean(dw.db.Exist(common.BytesToAddress(popSlice(ctx)))) - return 1 - }) - vm.PutPropString(obj, "exists") -} - -// contractWrapper provides a JavaScript wrapper around vm.Contract -type contractWrapper struct { - contract *vm.Contract -} - -// pushObject assembles a JSVM object wrapping a swappable contract and pushes it -// onto the VM stack. -func (cw *contractWrapper) pushObject(vm *duktape.Context) { - obj := vm.PushObject() - - // Push the wrapper for contract.Caller - vm.PushGoFunction(func(ctx *duktape.Context) int { - ptr := ctx.PushFixedBuffer(20) - copy(makeSlice(ptr, 20), cw.contract.Caller().Bytes()) - return 1 - }) - vm.PutPropString(obj, "getCaller") - - // Push the wrapper for contract.Address - vm.PushGoFunction(func(ctx *duktape.Context) int { - ptr := ctx.PushFixedBuffer(20) - copy(makeSlice(ptr, 20), cw.contract.Address().Bytes()) - return 1 - }) - vm.PutPropString(obj, "getAddress") - - // Push the wrapper for contract.Value - vm.PushGoFunction(func(ctx *duktape.Context) int { - pushBigInt(cw.contract.Value(), ctx) - return 1 - }) - vm.PutPropString(obj, "getValue") - - // Push the wrapper for contract.Input - vm.PushGoFunction(func(ctx *duktape.Context) int { - blob := cw.contract.Input - - ptr := ctx.PushFixedBuffer(len(blob)) - copy(makeSlice(ptr, uint(len(blob))), blob) - return 1 - }) - vm.PutPropString(obj, "getInput") -} - -// Tracer provides an implementation of Tracer that evaluates a Javascript -// function for each VM execution step. -type Tracer struct { - vm *duktape.Context // Javascript VM instance - - tracerObject int // Stack index of the tracer JavaScript object - stateObject int // Stack index of the global state to pull arguments from - - opWrapper *opWrapper // Wrapper around the VM opcode - stackWrapper *stackWrapper // Wrapper around the VM stack - memoryWrapper *memoryWrapper // Wrapper around the VM memory - contractWrapper *contractWrapper // Wrapper around the contract object - dbWrapper *dbWrapper // Wrapper around the VM environment - - pcValue *uint // Swappable pc value wrapped by a log accessor - gasValue *uint // Swappable gas value wrapped by a log accessor - costValue *uint // Swappable cost value wrapped by a log accessor - depthValue *uint // Swappable depth value wrapped by a log accessor - errorValue *string // Swappable error value wrapped by a log accessor - refundValue *uint // Swappable refund value wrapped by a log accessor - - ctx map[string]interface{} // Transaction context gathered throughout execution - err error // Error, if one has occurred - - interrupt uint32 // Atomic flag to signal execution interruption - reason error // Textual reason for the interruption -} - -// New instantiates a new tracer instance. code specifies a Javascript snippet, -// which must evaluate to an expression returning an object with 'step', 'fault' -// and 'result' functions. -func New(code string, txCtx vm.TxContext) (*Tracer, error) { - // Resolve any tracers by name and assemble the tracer object - if tracer, ok := tracer(code); ok { - code = tracer - } - tracer := &Tracer{ - vm: duktape.New(), - ctx: make(map[string]interface{}), - opWrapper: new(opWrapper), - stackWrapper: new(stackWrapper), - memoryWrapper: new(memoryWrapper), - contractWrapper: new(contractWrapper), - dbWrapper: new(dbWrapper), - pcValue: new(uint), - gasValue: new(uint), - costValue: new(uint), - depthValue: new(uint), - refundValue: new(uint), - } - tracer.ctx["gasPrice"] = txCtx.GasPrice - - // Set up builtins for this environment - tracer.vm.PushGlobalGoFunction("toHex", func(ctx *duktape.Context) int { - ctx.PushString(hexutil.Encode(popSlice(ctx))) - return 1 - }) - tracer.vm.PushGlobalGoFunction("toWord", func(ctx *duktape.Context) int { - var word common.Hash - if ptr, size := ctx.GetBuffer(-1); ptr != nil { - word = common.BytesToHash(makeSlice(ptr, size)) - } else { - word = common.HexToHash(ctx.GetString(-1)) - } - ctx.Pop() - copy(makeSlice(ctx.PushFixedBuffer(32), 32), word[:]) - return 1 - }) - tracer.vm.PushGlobalGoFunction("toAddress", func(ctx *duktape.Context) int { - var addr common.Address - if ptr, size := ctx.GetBuffer(-1); ptr != nil { - addr = common.BytesToAddress(makeSlice(ptr, size)) - } else { - addr = common.HexToAddress(ctx.GetString(-1)) - } - ctx.Pop() - copy(makeSlice(ctx.PushFixedBuffer(20), 20), addr[:]) - return 1 - }) - tracer.vm.PushGlobalGoFunction("toContract", func(ctx *duktape.Context) int { - var from common.Address - if ptr, size := ctx.GetBuffer(-2); ptr != nil { - from = common.BytesToAddress(makeSlice(ptr, size)) - } else { - from = common.HexToAddress(ctx.GetString(-2)) - } - nonce := uint64(ctx.GetInt(-1)) - ctx.Pop2() - - contract := crypto.CreateAddress(from, nonce) - copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) - return 1 - }) - tracer.vm.PushGlobalGoFunction("toContract2", func(ctx *duktape.Context) int { - var from common.Address - if ptr, size := ctx.GetBuffer(-3); ptr != nil { - from = common.BytesToAddress(makeSlice(ptr, size)) - } else { - from = common.HexToAddress(ctx.GetString(-3)) - } - // Retrieve salt hex string from js stack - salt := common.HexToHash(ctx.GetString(-2)) - // Retrieve code slice from js stack - var code []byte - if ptr, size := ctx.GetBuffer(-1); ptr != nil { - code = common.CopyBytes(makeSlice(ptr, size)) - } else { - code = common.FromHex(ctx.GetString(-1)) - } - codeHash := crypto.Keccak256(code) - ctx.Pop3() - contract := crypto.CreateAddress2(from, salt, codeHash) - copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) - return 1 - }) - tracer.vm.PushGlobalGoFunction("isPrecompiled", func(ctx *duktape.Context) int { - _, ok := vm.PrecompiledContractsIstanbul[common.BytesToAddress(popSlice(ctx))] - ctx.PushBoolean(ok) - return 1 - }) - tracer.vm.PushGlobalGoFunction("slice", func(ctx *duktape.Context) int { - start, end := ctx.GetInt(-2), ctx.GetInt(-1) - ctx.Pop2() - - blob := popSlice(ctx) - size := end - start - - if start < 0 || start > end || end > len(blob) { - // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go - // runtime goes belly up https://github.com/golang/go/issues/15639. - log.Warn("Tracer accessed out of bound memory", "available", len(blob), "offset", start, "size", size) - ctx.PushFixedBuffer(0) - return 1 - } - copy(makeSlice(ctx.PushFixedBuffer(size), uint(size)), blob[start:end]) - return 1 - }) - // Push the JavaScript tracer as object #0 onto the JSVM stack and validate it - if err := tracer.vm.PevalString("(" + code + ")"); err != nil { - log.Warn("Failed to compile tracer", "err", err) - return nil, err - } - tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself - - if !tracer.vm.GetPropString(tracer.tracerObject, "step") { - return nil, fmt.Errorf("trace object must expose a function step()") - } - tracer.vm.Pop() - - if !tracer.vm.GetPropString(tracer.tracerObject, "fault") { - return nil, fmt.Errorf("trace object must expose a function fault()") - } - tracer.vm.Pop() - - if !tracer.vm.GetPropString(tracer.tracerObject, "result") { - return nil, fmt.Errorf("trace object must expose a function result()") - } - tracer.vm.Pop() - - // Tracer is valid, inject the big int library to access large numbers - tracer.vm.EvalString(bigIntegerJS) - tracer.vm.PutGlobalString("bigInt") - - // Push the global environment state as object #1 into the JSVM stack - tracer.stateObject = tracer.vm.PushObject() - - logObject := tracer.vm.PushObject() - - tracer.opWrapper.pushObject(tracer.vm) - tracer.vm.PutPropString(logObject, "op") - - tracer.stackWrapper.pushObject(tracer.vm) - tracer.vm.PutPropString(logObject, "stack") - - tracer.memoryWrapper.pushObject(tracer.vm) - tracer.vm.PutPropString(logObject, "memory") - - tracer.contractWrapper.pushObject(tracer.vm) - tracer.vm.PutPropString(logObject, "contract") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.pcValue); return 1 }) - tracer.vm.PutPropString(logObject, "getPC") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.gasValue); return 1 }) - tracer.vm.PutPropString(logObject, "getGas") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.costValue); return 1 }) - tracer.vm.PutPropString(logObject, "getCost") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.depthValue); return 1 }) - tracer.vm.PutPropString(logObject, "getDepth") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.refundValue); return 1 }) - tracer.vm.PutPropString(logObject, "getRefund") - - tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { - if tracer.errorValue != nil { - ctx.PushString(*tracer.errorValue) - } else { - ctx.PushUndefined() - } - return 1 - }) - tracer.vm.PutPropString(logObject, "getError") - - tracer.vm.PutPropString(tracer.stateObject, "log") - - tracer.dbWrapper.pushObject(tracer.vm) - tracer.vm.PutPropString(tracer.stateObject, "db") - - return tracer, nil -} - -// Stop terminates execution of the tracer at the first opportune moment. -func (jst *Tracer) Stop(err error) { - jst.reason = err - atomic.StoreUint32(&jst.interrupt, 1) -} - -// call executes a method on a JS object, catching any errors, formatting and -// returning them as error objects. -func (jst *Tracer) call(method string, args ...string) (json.RawMessage, error) { - // Execute the JavaScript call and return any error - jst.vm.PushString(method) - for _, arg := range args { - jst.vm.GetPropString(jst.stateObject, arg) - } - code := jst.vm.PcallProp(jst.tracerObject, len(args)) - defer jst.vm.Pop() - - if code != 0 { - err := jst.vm.SafeToString(-1) - return nil, errors.New(err) - } - // No error occurred, extract return value and return - return json.RawMessage(jst.vm.JsonEncode(-1)), nil -} - -func wrapError(context string, err error) error { - return fmt.Errorf("%v in server-side tracer function '%v'", err, context) -} - -// CaptureStart implements the Tracer interface to initialize the tracing operation. -func (jst *Tracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { - jst.ctx["type"] = "CALL" - if create { - jst.ctx["type"] = "CREATE" - } - jst.ctx["from"] = from - jst.ctx["to"] = to - jst.ctx["input"] = input - jst.ctx["gas"] = gas - jst.ctx["value"] = value - - // Initialize the context - jst.ctx["block"] = env.Context.BlockNumber.Uint64() - jst.dbWrapper.db = env.StateDB - // Compute intrinsic gas - isHomestead := env.ChainConfig().IsHomestead(env.Context.BlockNumber) - isIstanbul := env.ChainConfig().IsIstanbul(env.Context.BlockNumber) - intrinsicGas, err := core.IntrinsicGas(input, nil, jst.ctx["type"] == "CREATE", isHomestead, isIstanbul) - if err != nil { - return - } - jst.ctx["intrinsicGas"] = intrinsicGas -} - -// CaptureState implements the Tracer interface to trace a single step of VM execution. -func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { - if jst.err != nil { - return - } - // If tracing was interrupted, set the error and stop - if atomic.LoadUint32(&jst.interrupt) > 0 { - jst.err = jst.reason - return - } - jst.opWrapper.op = op - jst.stackWrapper.stack = scope.Stack - jst.memoryWrapper.memory = scope.Memory - jst.contractWrapper.contract = scope.Contract - - *jst.pcValue = uint(pc) - *jst.gasValue = uint(gas) - *jst.costValue = uint(cost) - *jst.depthValue = uint(depth) - *jst.refundValue = uint(env.StateDB.GetRefund()) - - jst.errorValue = nil - if err != nil { - jst.errorValue = new(string) - *jst.errorValue = err.Error() - } - - if _, err := jst.call("step", "log", "db"); err != nil { - jst.err = wrapError("step", err) - } -} - -// CaptureFault implements the Tracer interface to trace an execution fault -func (jst *Tracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { - if jst.err != nil { - return - } - // Apart from the error, everything matches the previous invocation - jst.errorValue = new(string) - *jst.errorValue = err.Error() - - if _, err := jst.call("fault", "log", "db"); err != nil { - jst.err = wrapError("fault", err) - } -} - -// CaptureEnd is called after the call finishes to finalize the tracing. -func (jst *Tracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) { - jst.ctx["output"] = output - jst.ctx["time"] = t.String() - jst.ctx["gasUsed"] = gasUsed - - if err != nil { - jst.ctx["error"] = err.Error() - } -} - -// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error -func (jst *Tracer) GetResult() (json.RawMessage, error) { - // Transform the context into a JavaScript object and inject into the state - obj := jst.vm.PushObject() - - for key, val := range jst.ctx { - switch val := val.(type) { - case uint64: - jst.vm.PushUint(uint(val)) - - case string: - jst.vm.PushString(val) - - case []byte: - ptr := jst.vm.PushFixedBuffer(len(val)) - copy(makeSlice(ptr, uint(len(val))), val) - - case common.Address: - ptr := jst.vm.PushFixedBuffer(20) - copy(makeSlice(ptr, 20), val[:]) - - case *big.Int: - pushBigInt(val, jst.vm) - - default: - panic(fmt.Sprintf("unsupported type: %T", val)) - } - jst.vm.PutPropString(obj, key) - } - jst.vm.PutPropString(jst.stateObject, "ctx") - - // Finalize the trace and return the results - result, err := jst.call("result", "ctx", "db") - if err != nil { - jst.err = wrapError("result", err) - } - // Clean up the JavaScript environment - jst.vm.DestroyHeap() - jst.vm.Destroy() - - return result, jst.err -} diff --git a/eth/tracers/js/internal/tracers/4byte_tracer.js b/eth/tracers/js/internal/tracers/4byte_tracer.js new file mode 100644 index 000000000000..9ec3209f8b18 --- /dev/null +++ b/eth/tracers/js/internal/tracers/4byte_tracer.js @@ -0,0 +1,65 @@ +// Copyright 2017 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 . + +// 4byteTracer searches for 4byte-identifiers, and collects them for post-processing. +// It collects the methods identifiers along with the size of the supplied data, so +// a reversed signature can be matched against the size of the data. +// +// Example: +// > debug.traceTransaction( "0x214e597e35da083692f5386141e69f47e973b2c56e7a8073b1ea08fd7571e9de", {tracer: "4byteTracer"}) +// { +// 0x27dc297e-128: 1, +// 0x38cc4831-0: 2, +// 0x524f3889-96: 1, +// 0xadf59f99-288: 1, +// 0xc281d19e-0: 1 +// } +{ + // ids aggregates the 4byte ids found. + ids : {}, + + // store save the given indentifier and datasize. + store: function(id, size){ + var key = "" + toHex(id) + "-" + size; + this.ids[key] = this.ids[key] + 1 || 1; + }, + + enter: function(frame) { + // Skip any pre-compile invocations, those are just fancy opcodes + if (isPrecompiled(frame.getTo())) { + return; + } + var input = frame.getInput() + if (input.length >= 4) { + this.store(slice(input, 0, 4), input.length - 4); + } + }, + + exit: function(frameResult) {}, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + // Save the outer calldata also + if (ctx.input.length >= 4) { + this.store(slice(ctx.input, 0, 4), ctx.input.length-4) + } + return this.ids; + }, +} diff --git a/eth/tracers/internal/tracers/4byte_tracer.js b/eth/tracers/js/internal/tracers/4byte_tracer_legacy.js similarity index 100% rename from eth/tracers/internal/tracers/4byte_tracer.js rename to eth/tracers/js/internal/tracers/4byte_tracer_legacy.js diff --git a/eth/tracers/internal/tracers/assets.go b/eth/tracers/js/internal/tracers/assets.go similarity index 57% rename from eth/tracers/internal/tracers/assets.go rename to eth/tracers/js/internal/tracers/assets.go index 7f45ab286e75..37e3702400e1 100644 --- a/eth/tracers/internal/tracers/assets.go +++ b/eth/tracers/js/internal/tracers/assets.go @@ -1,8 +1,10 @@ // Code generated by go-bindata. DO NOT EDIT. // sources: -// 4byte_tracer.js (2.933kB) +// 4byte_tracer.js (2.224kB) +// 4byte_tracer_legacy.js (2.933kB) // bigram_tracer.js (1.712kB) -// call_tracer.js (8.956kB) +// call_tracer_js.js (3.497kB) +// call_tracer_legacy.js (8.956kB) // evmdis_tracer.js (4.195kB) // noop_tracer.js (1.271kB) // opcount_tracer.js (1.372kB) @@ -77,7 +79,7 @@ func (fi bindataFileInfo) Sys() interface{} { return nil } -var __4byte_tracerJs = 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+var __4byte_tracerJs = 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func _4byte_tracerJsBytes() ([]byte, error) { return bindataRead( @@ -93,6 +95,26 @@ func _4byte_tracerJs() (*asset, error) { } info := bindataFileInfo{name: "4byte_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x6b, 0xa8, 0x46, 0xa2, 0x3a, 0x2b, 0xaa, 0xb9, 0xb9, 0xba, 0xe2, 0x22, 0x10, 0xe, 0xe7, 0x4c, 0x24, 0xfc, 0x4c, 0x85, 0xeb, 0x96, 0x48, 0xe8, 0x7f, 0xc8, 0xe0, 0xd0, 0xd, 0x26, 0xa1, 0xb2}} + return a, nil +} + +var __4byte_tracer_legacyJs = 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+ +func _4byte_tracer_legacyJsBytes() ([]byte, error) { + return bindataRead( + __4byte_tracer_legacyJs, + "4byte_tracer_legacy.js", + ) +} + +func _4byte_tracer_legacyJs() (*asset, error) { + bytes, err := _4byte_tracer_legacyJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "4byte_tracer_legacy.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb4, 0xc5, 0x48, 0x2d, 0xd9, 0x43, 0x95, 0x93, 0x3b, 0x93, 0x2c, 0x47, 0x8c, 0x84, 0x32, 0x3c, 0x8b, 0x2e, 0xf3, 0x72, 0xc4, 0x57, 0xe6, 0x3a, 0xb3, 0xdf, 0x1d, 0xbf, 0x45, 0x3, 0xfc, 0xa}} return a, nil } @@ -117,22 +139,42 @@ func bigram_tracerJs() (*asset, error) { return a, nil } -var _call_tracerJs = 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+var _call_tracer_jsJs = 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+ +func call_tracer_jsJsBytes() ([]byte, error) { + return bindataRead( + _call_tracer_jsJs, + "call_tracer_js.js", + ) +} + +func call_tracer_jsJs() (*asset, error) { + bytes, err := call_tracer_jsJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "call_tracer_js.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x42, 0x13, 0x7a, 0x14, 0xbf, 0xa7, 0x49, 0x4f, 0xb4, 0x4f, 0x45, 0x1, 0xbc, 0x9e, 0xd1, 0x8e, 0xc7, 0xee, 0x61, 0xfa, 0x82, 0x52, 0xa4, 0x78, 0xfe, 0xff, 0xb1, 0x68, 0x1d, 0xcc, 0x1d, 0x8e}} + return a, nil +} + +var _call_tracer_legacyJs = 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-func call_tracerJsBytes() ([]byte, error) { +func call_tracer_legacyJsBytes() ([]byte, error) { return bindataRead( - _call_tracerJs, - "call_tracer.js", + _call_tracer_legacyJs, + "call_tracer_legacy.js", ) } -func call_tracerJs() (*asset, error) { - bytes, err := call_tracerJsBytes() +func call_tracer_legacyJs() (*asset, error) { + bytes, err := call_tracer_legacyJsBytes() if err != nil { return nil, err } - info := bindataFileInfo{name: "call_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + info := bindataFileInfo{name: "call_tracer_legacy.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x46, 0x79, 0xb6, 0xbc, 0xd2, 0xc, 0x25, 0xb1, 0x22, 0x56, 0xef, 0x77, 0xb9, 0x5e, 0x2e, 0xf4, 0xda, 0xb2, 0x2f, 0x53, 0xa4, 0xff, 0xc8, 0xac, 0xbb, 0x75, 0x22, 0x46, 0x59, 0xe3, 0x1d, 0x7d}} return a, nil } @@ -348,15 +390,17 @@ func AssetNames() []string { // _bindata is a table, holding each asset generator, mapped to its name. var _bindata = map[string]func() (*asset, error){ - "4byte_tracer.js": _4byte_tracerJs, - "bigram_tracer.js": bigram_tracerJs, - "call_tracer.js": call_tracerJs, - "evmdis_tracer.js": evmdis_tracerJs, - "noop_tracer.js": noop_tracerJs, - "opcount_tracer.js": opcount_tracerJs, - "prestate_tracer.js": prestate_tracerJs, - "trigram_tracer.js": trigram_tracerJs, - "unigram_tracer.js": unigram_tracerJs, + "4byte_tracer.js": _4byte_tracerJs, + "4byte_tracer_legacy.js": _4byte_tracer_legacyJs, + "bigram_tracer.js": bigram_tracerJs, + "call_tracer_js.js": call_tracer_jsJs, + "call_tracer_legacy.js": call_tracer_legacyJs, + "evmdis_tracer.js": evmdis_tracerJs, + "noop_tracer.js": noop_tracerJs, + "opcount_tracer.js": opcount_tracerJs, + "prestate_tracer.js": prestate_tracerJs, + "trigram_tracer.js": trigram_tracerJs, + "unigram_tracer.js": unigram_tracerJs, } // AssetDebug is true if the assets were built with the debug flag enabled. @@ -403,15 +447,17 @@ type bintree struct { } var _bintree = &bintree{nil, map[string]*bintree{ - "4byte_tracer.js": {_4byte_tracerJs, map[string]*bintree{}}, - "bigram_tracer.js": {bigram_tracerJs, map[string]*bintree{}}, - "call_tracer.js": {call_tracerJs, map[string]*bintree{}}, - "evmdis_tracer.js": {evmdis_tracerJs, map[string]*bintree{}}, - "noop_tracer.js": {noop_tracerJs, map[string]*bintree{}}, - "opcount_tracer.js": {opcount_tracerJs, map[string]*bintree{}}, - "prestate_tracer.js": {prestate_tracerJs, map[string]*bintree{}}, - "trigram_tracer.js": {trigram_tracerJs, map[string]*bintree{}}, - "unigram_tracer.js": {unigram_tracerJs, map[string]*bintree{}}, + "4byte_tracer.js": {_4byte_tracerJs, map[string]*bintree{}}, + "4byte_tracer_legacy.js": {_4byte_tracer_legacyJs, map[string]*bintree{}}, + "bigram_tracer.js": {bigram_tracerJs, map[string]*bintree{}}, + "call_tracer_js.js": {call_tracer_jsJs, map[string]*bintree{}}, + "call_tracer_legacy.js": {call_tracer_legacyJs, map[string]*bintree{}}, + "evmdis_tracer.js": {evmdis_tracerJs, map[string]*bintree{}}, + "noop_tracer.js": {noop_tracerJs, map[string]*bintree{}}, + "opcount_tracer.js": {opcount_tracerJs, map[string]*bintree{}}, + "prestate_tracer.js": {prestate_tracerJs, map[string]*bintree{}}, + "trigram_tracer.js": {trigram_tracerJs, map[string]*bintree{}}, + "unigram_tracer.js": {unigram_tracerJs, map[string]*bintree{}}, }} // RestoreAsset restores an asset under the given directory. diff --git a/eth/tracers/internal/tracers/bigram_tracer.js b/eth/tracers/js/internal/tracers/bigram_tracer.js similarity index 100% rename from eth/tracers/internal/tracers/bigram_tracer.js rename to eth/tracers/js/internal/tracers/bigram_tracer.js diff --git a/eth/tracers/js/internal/tracers/call_tracer_js.js b/eth/tracers/js/internal/tracers/call_tracer_js.js new file mode 100644 index 000000000000..7da7bf216a25 --- /dev/null +++ b/eth/tracers/js/internal/tracers/call_tracer_js.js @@ -0,0 +1,112 @@ +// Copyright 2021 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 . + + +// callFrameTracer uses the new call frame tracing methods to report useful information +// about internal messages of a transaction. +{ + callstack: [{}], + fault: function(log, db) {}, + result: function(ctx, db) { + // Prepare outer message info + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + } + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error + } else if (ctx.error !== undefined) { + result.error = ctx.error + } + if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) { + delete result.output + } + + return this.finalize(result) + }, + enter: function(frame) { + var call = { + type: frame.getType(), + from: toHex(frame.getFrom()), + to: toHex(frame.getTo()), + input: toHex(frame.getInput()), + gas: '0x' + bigInt(frame.getGas()).toString('16'), + } + if (frame.getValue() !== undefined){ + call.value='0x' + bigInt(frame.getValue()).toString(16) + } + this.callstack.push(call) + }, + exit: function(frameResult) { + var len = this.callstack.length + if (len > 1) { + var call = this.callstack.pop() + call.gasUsed = '0x' + bigInt(frameResult.getGasUsed()).toString('16') + var error = frameResult.getError() + if (error === undefined) { + call.output = toHex(frameResult.getOutput()) + } else { + call.error = error + if (call.type === 'CREATE' || call.type === 'CREATE2') { + delete call.to + } + } + len -= 1 + if (this.callstack[len-1].calls === undefined) { + this.callstack[len-1].calls = [] + } + this.callstack[len-1].calls.push(call) + } + }, + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key] + } + } + if (sorted.calls !== undefined) { + for (var i=0; i. + +// package js is a collection of tracers written in javascript. +package js + +import ( + "encoding/json" + "errors" + "fmt" + "math/big" + "strings" + "sync/atomic" + "time" + "unicode" + "unsafe" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/crypto" + tracers2 "github.com/ethereum/go-ethereum/eth/tracers" + "github.com/ethereum/go-ethereum/eth/tracers/js/internal/tracers" + "github.com/ethereum/go-ethereum/log" + "gopkg.in/olebedev/go-duktape.v3" +) + +// camel converts a snake cased input string into a camel cased output. +func camel(str string) string { + pieces := strings.Split(str, "_") + for i := 1; i < len(pieces); i++ { + pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] + } + return strings.Join(pieces, "") +} + +var assetTracers = make(map[string]string) + +// init retrieves the JavaScript transaction tracers included in go-ethereum. +func init() { + for _, file := range tracers.AssetNames() { + name := camel(strings.TrimSuffix(file, ".js")) + assetTracers[name] = string(tracers.MustAsset(file)) + } + tracers2.RegisterLookup(true, newJsTracer) +} + +// makeSlice convert an unsafe memory pointer with the given type into a Go byte +// slice. +// +// Note, the returned slice uses the same memory area as the input arguments. +// If those are duktape stack items, popping them off **will** make the slice +// contents change. +func makeSlice(ptr unsafe.Pointer, size uint) []byte { + var sl = struct { + addr uintptr + len int + cap int + }{uintptr(ptr), int(size), int(size)} + + return *(*[]byte)(unsafe.Pointer(&sl)) +} + +// popSlice pops a buffer off the JavaScript stack and returns it as a slice. +func popSlice(ctx *duktape.Context) []byte { + blob := common.CopyBytes(makeSlice(ctx.GetBuffer(-1))) + ctx.Pop() + return blob +} + +// pushBigInt create a JavaScript BigInteger in the VM. +func pushBigInt(n *big.Int, ctx *duktape.Context) { + ctx.GetGlobalString("bigInt") + ctx.PushString(n.String()) + ctx.Call(1) +} + +// opWrapper provides a JavaScript wrapper around OpCode. +type opWrapper struct { + op vm.OpCode +} + +// pushObject assembles a JSVM object wrapping a swappable opcode and pushes it +// onto the VM stack. +func (ow *opWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(int(ow.op)); return 1 }) + vm.PutPropString(obj, "toNumber") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushString(ow.op.String()); return 1 }) + vm.PutPropString(obj, "toString") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushBoolean(ow.op.IsPush()); return 1 }) + vm.PutPropString(obj, "isPush") +} + +// memoryWrapper provides a JavaScript wrapper around vm.Memory. +type memoryWrapper struct { + memory *vm.Memory +} + +// slice returns the requested range of memory as a byte slice. +func (mw *memoryWrapper) slice(begin, end int64) []byte { + if end == begin { + return []byte{} + } + if end < begin || begin < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "offset", begin, "end", end) + return nil + } + if mw.memory.Len() < int(end) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", begin, "size", end-begin) + return nil + } + return mw.memory.GetCopy(begin, end-begin) +} + +// getUint returns the 32 bytes at the specified address interpreted as a uint. +func (mw *memoryWrapper) getUint(addr int64) *big.Int { + if mw.memory.Len() < int(addr)+32 || addr < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", addr, "size", 32) + return new(big.Int) + } + return new(big.Int).SetBytes(mw.memory.GetPtr(addr, 32)) +} + +// pushObject assembles a JSVM object wrapping a swappable memory and pushes it +// onto the VM stack. +func (mw *memoryWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Generate the `slice` method which takes two ints and returns a buffer + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := mw.slice(int64(ctx.GetInt(-2)), int64(ctx.GetInt(-1))) + ctx.Pop2() + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "slice") + + // Generate the `getUint` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := int64(ctx.GetInt(-1)) + ctx.Pop() + + pushBigInt(mw.getUint(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "getUint") +} + +// stackWrapper provides a JavaScript wrapper around vm.Stack. +type stackWrapper struct { + stack *vm.Stack +} + +// peek returns the nth-from-the-top element of the stack. +func (sw *stackWrapper) peek(idx int) *big.Int { + if len(sw.stack.Data()) <= idx || idx < 0 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound stack", "size", len(sw.stack.Data()), "index", idx) + return new(big.Int) + } + return sw.stack.Back(idx).ToBig() +} + +// pushObject assembles a JSVM object wrapping a swappable stack and pushes it +// onto the VM stack. +func (sw *stackWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(len(sw.stack.Data())); return 1 }) + vm.PutPropString(obj, "length") + + // Generate the `peek` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := ctx.GetInt(-1) + ctx.Pop() + + pushBigInt(sw.peek(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "peek") +} + +// dbWrapper provides a JavaScript wrapper around vm.Database. +type dbWrapper struct { + db vm.StateDB +} + +// pushObject assembles a JSVM object wrapping a swappable database and pushes it +// onto the VM stack. +func (dw *dbWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for statedb.GetBalance + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(dw.db.GetBalance(common.BytesToAddress(popSlice(ctx))), ctx) + return 1 + }) + vm.PutPropString(obj, "getBalance") + + // Push the wrapper for statedb.GetNonce + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushInt(int(dw.db.GetNonce(common.BytesToAddress(popSlice(ctx))))) + return 1 + }) + vm.PutPropString(obj, "getNonce") + + // Push the wrapper for statedb.GetCode + vm.PushGoFunction(func(ctx *duktape.Context) int { + code := dw.db.GetCode(common.BytesToAddress(popSlice(ctx))) + + ptr := ctx.PushFixedBuffer(len(code)) + copy(makeSlice(ptr, uint(len(code))), code) + return 1 + }) + vm.PutPropString(obj, "getCode") + + // Push the wrapper for statedb.GetState + vm.PushGoFunction(func(ctx *duktape.Context) int { + hash := popSlice(ctx) + addr := popSlice(ctx) + + state := dw.db.GetState(common.BytesToAddress(addr), common.BytesToHash(hash)) + + ptr := ctx.PushFixedBuffer(len(state)) + copy(makeSlice(ptr, uint(len(state))), state[:]) + return 1 + }) + vm.PutPropString(obj, "getState") + + // Push the wrapper for statedb.Exists + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushBoolean(dw.db.Exist(common.BytesToAddress(popSlice(ctx)))) + return 1 + }) + vm.PutPropString(obj, "exists") +} + +// contractWrapper provides a JavaScript wrapper around vm.Contract +type contractWrapper struct { + contract *vm.Contract +} + +// pushObject assembles a JSVM object wrapping a swappable contract and pushes it +// onto the VM stack. +func (cw *contractWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for contract.Caller + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Caller().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getCaller") + + // Push the wrapper for contract.Address + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Address().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getAddress") + + // Push the wrapper for contract.Value + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(cw.contract.Value(), ctx) + return 1 + }) + vm.PutPropString(obj, "getValue") + + // Push the wrapper for contract.Input + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := cw.contract.Input + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "getInput") +} + +type frame struct { + typ *string + from *common.Address + to *common.Address + input []byte + gas *uint + value *big.Int +} + +func newFrame() *frame { + return &frame{ + typ: new(string), + from: new(common.Address), + to: new(common.Address), + gas: new(uint), + } +} + +func (f *frame) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.typ); return 1 }) + vm.PutPropString(obj, "getType") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.from); return 1 }) + vm.PutPropString(obj, "getFrom") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.to); return 1 }) + vm.PutPropString(obj, "getTo") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, f.input); return 1 }) + vm.PutPropString(obj, "getInput") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.gas); return 1 }) + vm.PutPropString(obj, "getGas") + + vm.PushGoFunction(func(ctx *duktape.Context) int { + if f.value != nil { + pushValue(ctx, f.value) + } else { + ctx.PushUndefined() + } + return 1 + }) + vm.PutPropString(obj, "getValue") +} + +type frameResult struct { + gasUsed *uint + output []byte + errorValue *string +} + +func newFrameResult() *frameResult { + return &frameResult{ + gasUsed: new(uint), + } +} + +func (r *frameResult) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *r.gasUsed); return 1 }) + vm.PutPropString(obj, "getGasUsed") + + vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, r.output); return 1 }) + vm.PutPropString(obj, "getOutput") + + vm.PushGoFunction(func(ctx *duktape.Context) int { + if r.errorValue != nil { + pushValue(ctx, *r.errorValue) + } else { + ctx.PushUndefined() + } + return 1 + }) + vm.PutPropString(obj, "getError") +} + +// jsTracer provides an implementation of Tracer that evaluates a Javascript +// function for each VM execution step. +type jsTracer struct { + vm *duktape.Context // Javascript VM instance + env *vm.EVM // EVM instance executing the code being traced + + tracerObject int // Stack index of the tracer JavaScript object + stateObject int // Stack index of the global state to pull arguments from + + opWrapper *opWrapper // Wrapper around the VM opcode + stackWrapper *stackWrapper // Wrapper around the VM stack + memoryWrapper *memoryWrapper // Wrapper around the VM memory + contractWrapper *contractWrapper // Wrapper around the contract object + dbWrapper *dbWrapper // Wrapper around the VM environment + + pcValue *uint // Swappable pc value wrapped by a log accessor + gasValue *uint // Swappable gas value wrapped by a log accessor + costValue *uint // Swappable cost value wrapped by a log accessor + depthValue *uint // Swappable depth value wrapped by a log accessor + errorValue *string // Swappable error value wrapped by a log accessor + refundValue *uint // Swappable refund value wrapped by a log accessor + + frame *frame // Represents entry into call frame. Fields are swappable + frameResult *frameResult // Represents exit from a call frame. Fields are swappable + + ctx map[string]interface{} // Transaction context gathered throughout execution + err error // Error, if one has occurred + + interrupt uint32 // Atomic flag to signal execution interruption + reason error // Textual reason for the interruption + + activePrecompiles []common.Address // Updated on CaptureStart based on given rules + traceSteps bool // When true, will invoke step() on each opcode + traceCallFrames bool // When true, will invoke enter() and exit() js funcs +} + +// New instantiates a new tracer instance. code specifies a Javascript snippet, +// which must evaluate to an expression returning an object with 'step', 'fault' +// and 'result' functions. +func newJsTracer(code string, ctx *tracers2.Context) (tracers2.Tracer, error) { + if c, ok := assetTracers[code]; ok { + code = c + } + if ctx == nil { + ctx = new(tracers2.Context) + } + tracer := &jsTracer{ + vm: duktape.New(), + ctx: make(map[string]interface{}), + opWrapper: new(opWrapper), + stackWrapper: new(stackWrapper), + memoryWrapper: new(memoryWrapper), + contractWrapper: new(contractWrapper), + dbWrapper: new(dbWrapper), + pcValue: new(uint), + gasValue: new(uint), + costValue: new(uint), + depthValue: new(uint), + refundValue: new(uint), + frame: newFrame(), + frameResult: newFrameResult(), + } + if ctx.BlockHash != (common.Hash{}) { + tracer.ctx["blockHash"] = ctx.BlockHash + + if ctx.TxHash != (common.Hash{}) { + tracer.ctx["txIndex"] = ctx.TxIndex + tracer.ctx["txHash"] = ctx.TxHash + } + } + // Set up builtins for this environment + tracer.vm.PushGlobalGoFunction("toHex", func(ctx *duktape.Context) int { + ctx.PushString(hexutil.Encode(popSlice(ctx))) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toWord", func(ctx *duktape.Context) int { + var word common.Hash + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + word = common.BytesToHash(makeSlice(ptr, size)) + } else { + word = common.HexToHash(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(32), 32), word[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toAddress", func(ctx *duktape.Context) int { + var addr common.Address + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + addr = common.BytesToAddress(makeSlice(ptr, size)) + } else { + addr = common.HexToAddress(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(20), 20), addr[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-2); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-2)) + } + nonce := uint64(ctx.GetInt(-1)) + ctx.Pop2() + + contract := crypto.CreateAddress(from, nonce) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract2", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-3); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-3)) + } + // Retrieve salt hex string from js stack + salt := common.HexToHash(ctx.GetString(-2)) + // Retrieve code slice from js stack + var code []byte + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + code = common.CopyBytes(makeSlice(ptr, size)) + } else { + code = common.FromHex(ctx.GetString(-1)) + } + codeHash := crypto.Keccak256(code) + ctx.Pop3() + contract := crypto.CreateAddress2(from, salt, codeHash) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("isPrecompiled", func(ctx *duktape.Context) int { + addr := common.BytesToAddress(popSlice(ctx)) + for _, p := range tracer.activePrecompiles { + if p == addr { + ctx.PushBoolean(true) + return 1 + } + } + ctx.PushBoolean(false) + return 1 + }) + tracer.vm.PushGlobalGoFunction("slice", func(ctx *duktape.Context) int { + start, end := ctx.GetInt(-2), ctx.GetInt(-1) + ctx.Pop2() + + blob := popSlice(ctx) + size := end - start + + if start < 0 || start > end || end > len(blob) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", len(blob), "offset", start, "size", size) + ctx.PushFixedBuffer(0) + return 1 + } + copy(makeSlice(ctx.PushFixedBuffer(size), uint(size)), blob[start:end]) + return 1 + }) + // Push the JavaScript tracer as object #0 onto the JSVM stack and validate it + if err := tracer.vm.PevalString("(" + code + ")"); err != nil { + log.Warn("Failed to compile tracer", "err", err) + return nil, err + } + tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself + + hasStep := tracer.vm.GetPropString(tracer.tracerObject, "step") + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "fault") { + return nil, fmt.Errorf("trace object must expose a function fault()") + } + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "result") { + return nil, fmt.Errorf("trace object must expose a function result()") + } + tracer.vm.Pop() + + hasEnter := tracer.vm.GetPropString(tracer.tracerObject, "enter") + tracer.vm.Pop() + hasExit := tracer.vm.GetPropString(tracer.tracerObject, "exit") + tracer.vm.Pop() + if hasEnter != hasExit { + return nil, fmt.Errorf("trace object must expose either both or none of enter() and exit()") + } + tracer.traceCallFrames = hasEnter && hasExit + tracer.traceSteps = hasStep + + // Tracer is valid, inject the big int library to access large numbers + tracer.vm.EvalString(bigIntegerJS) + tracer.vm.PutGlobalString("bigInt") + + // Push the global environment state as object #1 into the JSVM stack + tracer.stateObject = tracer.vm.PushObject() + + logObject := tracer.vm.PushObject() + + tracer.opWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "op") + + tracer.stackWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "stack") + + tracer.memoryWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "memory") + + tracer.contractWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "contract") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.pcValue); return 1 }) + tracer.vm.PutPropString(logObject, "getPC") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.gasValue); return 1 }) + tracer.vm.PutPropString(logObject, "getGas") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.costValue); return 1 }) + tracer.vm.PutPropString(logObject, "getCost") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.depthValue); return 1 }) + tracer.vm.PutPropString(logObject, "getDepth") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.refundValue); return 1 }) + tracer.vm.PutPropString(logObject, "getRefund") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { + if tracer.errorValue != nil { + ctx.PushString(*tracer.errorValue) + } else { + ctx.PushUndefined() + } + return 1 + }) + tracer.vm.PutPropString(logObject, "getError") + + tracer.vm.PutPropString(tracer.stateObject, "log") + + tracer.frame.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "frame") + + tracer.frameResult.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "frameResult") + + tracer.dbWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "db") + + return tracer, nil +} + +// Stop terminates execution of the tracer at the first opportune moment. +func (jst *jsTracer) Stop(err error) { + jst.reason = err + atomic.StoreUint32(&jst.interrupt, 1) +} + +// call executes a method on a JS object, catching any errors, formatting and +// returning them as error objects. +func (jst *jsTracer) call(noret bool, method string, args ...string) (json.RawMessage, error) { + // Execute the JavaScript call and return any error + jst.vm.PushString(method) + for _, arg := range args { + jst.vm.GetPropString(jst.stateObject, arg) + } + code := jst.vm.PcallProp(jst.tracerObject, len(args)) + defer jst.vm.Pop() + + if code != 0 { + err := jst.vm.SafeToString(-1) + return nil, errors.New(err) + } + // No error occurred, extract return value and return + if noret { + return nil, nil + } + // Push a JSON marshaller onto the stack. We can't marshal from the out- + // side because duktape can crash on large nestings and we can't catch + // C++ exceptions ourselves from Go. TODO(karalabe): Yuck, why wrap?! + jst.vm.PushString("(JSON.stringify)") + jst.vm.Eval() + + jst.vm.Swap(-1, -2) + if code = jst.vm.Pcall(1); code != 0 { + err := jst.vm.SafeToString(-1) + return nil, errors.New(err) + } + return json.RawMessage(jst.vm.SafeToString(-1)), nil +} + +func wrapError(context string, err error) error { + return fmt.Errorf("%v in server-side tracer function '%v'", err, context) +} + +// CaptureStart implements the Tracer interface to initialize the tracing operation. +func (jst *jsTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + jst.env = env + jst.ctx["type"] = "CALL" + if create { + jst.ctx["type"] = "CREATE" + } + jst.ctx["from"] = from + jst.ctx["to"] = to + jst.ctx["input"] = input + jst.ctx["gas"] = gas + jst.ctx["gasPrice"] = env.TxContext.GasPrice + jst.ctx["value"] = value + + // Initialize the context + jst.ctx["block"] = env.Context.BlockNumber.Uint64() + jst.dbWrapper.db = env.StateDB + // Update list of precompiles based on current block + rules := env.ChainConfig().Rules(env.Context.BlockNumber) + jst.activePrecompiles = vm.ActivePrecompiles(rules) + + // Compute intrinsic gas + isHomestead := env.ChainConfig().IsHomestead(env.Context.BlockNumber) + isIstanbul := env.ChainConfig().IsIstanbul(env.Context.BlockNumber) + intrinsicGas, err := core.IntrinsicGas(input, nil, jst.ctx["type"] == "CREATE", isHomestead, isIstanbul) + if err != nil { + return + } + jst.ctx["intrinsicGas"] = intrinsicGas +} + +// CaptureState implements the Tracer interface to trace a single step of VM execution. +func (jst *jsTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { + if !jst.traceSteps { + return + } + if jst.err != nil { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + jst.env.Cancel() + return + } + jst.opWrapper.op = op + jst.stackWrapper.stack = scope.Stack + jst.memoryWrapper.memory = scope.Memory + jst.contractWrapper.contract = scope.Contract + + *jst.pcValue = uint(pc) + *jst.gasValue = uint(gas) + *jst.costValue = uint(cost) + *jst.depthValue = uint(depth) + *jst.refundValue = uint(jst.env.StateDB.GetRefund()) + + jst.errorValue = nil + if err != nil { + jst.errorValue = new(string) + *jst.errorValue = err.Error() + } + + if _, err := jst.call(true, "step", "log", "db"); err != nil { + jst.err = wrapError("step", err) + } +} + +// CaptureFault implements the Tracer interface to trace an execution fault +func (jst *jsTracer) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) { + if jst.err != nil { + return + } + // Apart from the error, everything matches the previous invocation + jst.errorValue = new(string) + *jst.errorValue = err.Error() + + if _, err := jst.call(true, "fault", "log", "db"); err != nil { + jst.err = wrapError("fault", err) + } +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (jst *jsTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) { + jst.ctx["output"] = output + jst.ctx["time"] = t.String() + jst.ctx["gasUsed"] = gasUsed + + if err != nil { + jst.ctx["error"] = err.Error() + } +} + +// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct). +func (jst *jsTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { + if !jst.traceCallFrames { + return + } + if jst.err != nil { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + return + } + + *jst.frame.typ = typ.String() + *jst.frame.from = from + *jst.frame.to = to + jst.frame.input = common.CopyBytes(input) + *jst.frame.gas = uint(gas) + jst.frame.value = nil + if value != nil { + jst.frame.value = new(big.Int).SetBytes(value.Bytes()) + } + + if _, err := jst.call(true, "enter", "frame"); err != nil { + jst.err = wrapError("enter", err) + } +} + +// CaptureExit is called when EVM exits a scope, even if the scope didn't +// execute any code. +func (jst *jsTracer) CaptureExit(output []byte, gasUsed uint64, err error) { + if !jst.traceCallFrames { + return + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + return + } + + jst.frameResult.output = common.CopyBytes(output) + *jst.frameResult.gasUsed = uint(gasUsed) + jst.frameResult.errorValue = nil + if err != nil { + jst.frameResult.errorValue = new(string) + *jst.frameResult.errorValue = err.Error() + } + + if _, err := jst.call(true, "exit", "frameResult"); err != nil { + jst.err = wrapError("exit", err) + } +} + +// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error +func (jst *jsTracer) GetResult() (json.RawMessage, error) { + // Transform the context into a JavaScript object and inject into the state + obj := jst.vm.PushObject() + + for key, val := range jst.ctx { + jst.addToObj(obj, key, val) + } + jst.vm.PutPropString(jst.stateObject, "ctx") + + // Finalize the trace and return the results + result, err := jst.call(false, "result", "ctx", "db") + if err != nil { + jst.err = wrapError("result", err) + } + // Clean up the JavaScript environment + jst.vm.DestroyHeap() + jst.vm.Destroy() + + return result, jst.err +} + +// addToObj pushes a field to a JS object. +func (jst *jsTracer) addToObj(obj int, key string, val interface{}) { + pushValue(jst.vm, val) + jst.vm.PutPropString(obj, key) +} + +func pushValue(ctx *duktape.Context, val interface{}) { + switch val := val.(type) { + case uint64: + ctx.PushUint(uint(val)) + case string: + ctx.PushString(val) + case []byte: + ptr := ctx.PushFixedBuffer(len(val)) + copy(makeSlice(ptr, uint(len(val))), val) + case common.Address: + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), val[:]) + case *big.Int: + pushBigInt(val, ctx) + case int: + ctx.PushInt(val) + case uint: + ctx.PushUint(val) + case common.Hash: + ptr := ctx.PushFixedBuffer(32) + copy(makeSlice(ptr, 32), val[:]) + default: + panic(fmt.Sprintf("unsupported type: %T", val)) + } +} diff --git a/eth/tracers/tracer_test.go b/eth/tracers/js/tracer_test.go similarity index 51% rename from eth/tracers/tracer_test.go rename to eth/tracers/js/tracer_test.go index 7cda2e533064..2253ae597cf3 100644 --- a/eth/tracers/tracer_test.go +++ b/eth/tracers/js/tracer_test.go @@ -14,7 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package tracers +package js import ( "encoding/json" @@ -26,6 +26,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/eth/tracers" "github.com/ethereum/go-ethereum/params" ) @@ -59,13 +60,13 @@ func testCtx() *vmContext { return &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} } -func runTrace(tracer *Tracer, vmctx *vmContext) (json.RawMessage, error) { - env := vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) +func runTrace(tracer tracers.Tracer, vmctx *vmContext, chaincfg *params.ChainConfig) (json.RawMessage, error) { var ( + env = vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, chaincfg, vm.Config{Debug: true, Tracer: tracer}) startGas uint64 = 10000 value = big.NewInt(0) + contract = vm.NewContract(account{}, account{}, value, startGas) ) - contract := vm.NewContract(account{}, account{}, value, startGas) contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0} tracer.CaptureStart(env, contract.Caller(), contract.Address(), false, []byte{}, startGas, value) @@ -78,22 +79,22 @@ func runTrace(tracer *Tracer, vmctx *vmContext) (json.RawMessage, error) { } func TestTracer(t *testing.T) { - execTracer := func(code string) []byte { + execTracer := func(code string) ([]byte, string) { t.Helper() - ctx := &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} - tracer, err := New(code, ctx.txCtx) + tracer, err := newJsTracer(code, nil) if err != nil { t.Fatal(err) } - ret, err := runTrace(tracer, ctx) + ret, err := runTrace(tracer, testCtx(), params.TestChainConfig) if err != nil { - t.Fatal(err) + return nil, err.Error() // Stringify to allow comparison without nil checks } - return ret + return ret, "" } for i, tt := range []struct { code string want string + fail string }{ { // tests that we don't panic on bad arguments to memory access code: "{depths: [], step: function(log) { this.depths.push(log.memory.slice(-1,-2)); }, fault: function() {}, result: function() { return this.depths; }}", @@ -116,49 +117,47 @@ func TestTracer(t *testing.T) { }, { // tests intrinsic gas code: "{depths: [], step: function() {}, fault: function() {}, result: function(ctx) { return ctx.gasPrice+'.'+ctx.gasUsed+'.'+ctx.intrinsicGas; }}", want: `"100000.6.21000"`, + }, { // tests too deep object / serialization crash + code: "{step: function() {}, fault: function() {}, result: function() { var o={}; var x=o; for (var i=0; i<1000; i++){ o.foo={}; o=o.foo; } return x; }}", + fail: "RangeError: json encode recursion limit in server-side tracer function 'result'", }, } { - if have := execTracer(tt.code); tt.want != string(have) { - t.Errorf("testcase %d: expected return value to be %s got %s\n\tcode: %v", i, tt.want, string(have), tt.code) + if have, err := execTracer(tt.code); tt.want != string(have) || tt.fail != err { + t.Errorf("testcase %d: expected return value to be '%s' got '%s', error to be '%s' got '%s'\n\tcode: %v", i, tt.want, string(have), tt.fail, err, tt.code) } } } func TestHalt(t *testing.T) { t.Skip("duktape doesn't support abortion") - timeout := errors.New("stahp") - vmctx := testCtx() - tracer, err := New("{step: function() { while(1); }, result: function() { return null; }}", vmctx.txCtx) + tracer, err := newJsTracer("{step: function() { while(1); }, result: function() { return null; }, fault: function(){}}", nil) if err != nil { t.Fatal(err) } - go func() { time.Sleep(1 * time.Second) tracer.Stop(timeout) }() - - if _, err = runTrace(tracer, vmctx); err.Error() != "stahp in server-side tracer function 'step'" { + if _, err = runTrace(tracer, testCtx(), params.TestChainConfig); err.Error() != "stahp in server-side tracer function 'step'" { t.Errorf("Expected timeout error, got %v", err) } } func TestHaltBetweenSteps(t *testing.T) { - vmctx := testCtx() - tracer, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }}", vmctx.txCtx) + tracer, err := newJsTracer("{step: function() {}, fault: function() {}, result: function() { return null; }}", nil) if err != nil { t.Fatal(err) } - env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(1)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) scope := &vm.ScopeContext{ Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0), } - - tracer.CaptureState(env, 0, 0, 0, 0, scope, nil, 0, nil) + tracer.CaptureStart(env, common.Address{}, common.Address{}, false, []byte{}, 0, big.NewInt(0)) + tracer.CaptureState(0, 0, 0, 0, scope, nil, 0, nil) timeout := errors.New("stahp") tracer.Stop(timeout) - tracer.CaptureState(env, 0, 0, 0, 0, scope, nil, 0, nil) + tracer.CaptureState(0, 0, 0, 0, scope, nil, 0, nil) if _, err := tracer.GetResult(); err.Error() != timeout.Error() { t.Errorf("Expected timeout error, got %v", err) @@ -168,22 +167,16 @@ func TestHaltBetweenSteps(t *testing.T) { // TestNoStepExec tests a regular value transfer (no exec), and accessing the statedb // in 'result' func TestNoStepExec(t *testing.T) { - runEmptyTrace := func(tracer *Tracer, vmctx *vmContext) (json.RawMessage, error) { - env := vm.NewEVM(vmctx.blockCtx, vmctx.txCtx, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) - startGas := uint64(10000) - contract := vm.NewContract(account{}, account{}, big.NewInt(0), startGas) - tracer.CaptureStart(env, contract.Caller(), contract.Address(), false, []byte{}, startGas, big.NewInt(0)) - tracer.CaptureEnd(nil, startGas-contract.Gas, 1, nil) - return tracer.GetResult() - } execTracer := func(code string) []byte { t.Helper() - ctx := &vmContext{blockCtx: vm.BlockContext{BlockNumber: big.NewInt(1)}, txCtx: vm.TxContext{GasPrice: big.NewInt(100000)}} - tracer, err := New(code, ctx.txCtx) + tracer, err := newJsTracer(code, nil) if err != nil { t.Fatal(err) } - ret, err := runEmptyTrace(tracer, ctx) + env := vm.NewEVM(vm.BlockContext{BlockNumber: big.NewInt(1)}, vm.TxContext{GasPrice: big.NewInt(100)}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) + tracer.CaptureStart(env, common.Address{}, common.Address{}, false, []byte{}, 1000, big.NewInt(0)) + tracer.CaptureEnd(nil, 0, 1, nil) + ret, err := tracer.GetResult() if err != nil { t.Fatal(err) } @@ -203,3 +196,63 @@ func TestNoStepExec(t *testing.T) { } } } + +func TestIsPrecompile(t *testing.T) { + chaincfg := ¶ms.ChainConfig{ChainID: big.NewInt(1), HomesteadBlock: big.NewInt(0), DAOForkBlock: nil, DAOForkSupport: false, EIP150Block: big.NewInt(0), EIP150Hash: common.Hash{}, EIP155Block: big.NewInt(0), EIP158Block: big.NewInt(0), ByzantiumBlock: big.NewInt(100), ConstantinopleBlock: big.NewInt(0), PetersburgBlock: big.NewInt(0), IstanbulBlock: big.NewInt(200), MuirGlacierBlock: big.NewInt(0), BerlinBlock: big.NewInt(300), CatalystBlock: nil, Ethash: new(params.EthashConfig), Clique: nil} + chaincfg.ByzantiumBlock = big.NewInt(100) + chaincfg.IstanbulBlock = big.NewInt(200) + chaincfg.BerlinBlock = big.NewInt(300) + txCtx := vm.TxContext{GasPrice: big.NewInt(100000)} + tracer, err := newJsTracer("{addr: toAddress('0000000000000000000000000000000000000009'), res: null, step: function() { this.res = isPrecompiled(this.addr); }, fault: function() {}, result: function() { return this.res; }}", nil) + if err != nil { + t.Fatal(err) + } + + blockCtx := vm.BlockContext{BlockNumber: big.NewInt(150)} + res, err := runTrace(tracer, &vmContext{blockCtx, txCtx}, chaincfg) + if err != nil { + t.Error(err) + } + if string(res) != "false" { + t.Errorf("Tracer should not consider blake2f as precompile in byzantium") + } + + tracer, _ = newJsTracer("{addr: toAddress('0000000000000000000000000000000000000009'), res: null, step: function() { this.res = isPrecompiled(this.addr); }, fault: function() {}, result: function() { return this.res; }}", nil) + blockCtx = vm.BlockContext{BlockNumber: big.NewInt(250)} + res, err = runTrace(tracer, &vmContext{blockCtx, txCtx}, chaincfg) + if err != nil { + t.Error(err) + } + if string(res) != "true" { + t.Errorf("Tracer should consider blake2f as precompile in istanbul") + } +} + +func TestEnterExit(t *testing.T) { + // test that either both or none of enter() and exit() are defined + if _, err := newJsTracer("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}}", new(tracers.Context)); err == nil { + t.Fatal("tracer creation should've failed without exit() definition") + } + if _, err := newJsTracer("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}, exit: function() {}}", new(tracers.Context)); err != nil { + t.Fatal(err) + } + // test that the enter and exit method are correctly invoked and the values passed + tracer, err := newJsTracer("{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, step: function() {}, fault: function() {}, result: function() { return {enters: this.enters, exits: this.exits, enterGas: this.enterGas, gasUsed: this.gasUsed} }, enter: function(frame) { this.enters++; this.enterGas = frame.getGas(); }, exit: function(res) { this.exits++; this.gasUsed = res.getGasUsed(); }}", new(tracers.Context)) + if err != nil { + t.Fatal(err) + } + scope := &vm.ScopeContext{ + Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0), + } + tracer.CaptureEnter(vm.CALL, scope.Contract.Caller(), scope.Contract.Address(), []byte{}, 1000, new(big.Int)) + tracer.CaptureExit([]byte{}, 400, nil) + + have, err := tracer.GetResult() + if err != nil { + t.Fatal(err) + } + want := `{"enters":1,"exits":1,"enterGas":1000,"gasUsed":400}` + if string(have) != want { + t.Errorf("Number of invocations of enter() and exit() is wrong. Have %s, want %s\n", have, want) + } +} diff --git a/eth/tracers/native/call.go b/eth/tracers/native/call.go new file mode 100644 index 000000000000..16ea75aa4a1c --- /dev/null +++ b/eth/tracers/native/call.go @@ -0,0 +1,182 @@ +// Copyright 2021 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 . + +package native + +import ( + "encoding/json" + "errors" + "math/big" + "strconv" + "strings" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/eth/tracers" +) + +func init() { + register("callTracer", newCallTracer) +} + +type callFrame struct { + Type string `json:"type"` + From string `json:"from"` + To string `json:"to,omitempty"` + Value string `json:"value,omitempty"` + Gas string `json:"gas"` + GasUsed string `json:"gasUsed"` + Input string `json:"input"` + Output string `json:"output,omitempty"` + Error string `json:"error,omitempty"` + Calls []callFrame `json:"calls,omitempty"` +} + +type callTracer struct { + env *vm.EVM + callstack []callFrame + interrupt uint32 // Atomic flag to signal execution interruption + reason error // Textual reason for the interruption +} + +// newCallTracer returns a native go tracer which tracks +// call frames of a tx, and implements vm.EVMLogger. +func newCallTracer() tracers.Tracer { + // First callframe contains tx context info + // and is populated on start and end. + t := &callTracer{callstack: make([]callFrame, 1)} + return t +} + +// CaptureStart implements the EVMLogger interface to initialize the tracing operation. +func (t *callTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { + t.env = env + t.callstack[0] = callFrame{ + Type: "CALL", + From: addrToHex(from), + To: addrToHex(to), + Input: bytesToHex(input), + Gas: uintToHex(gas), + Value: bigToHex(value), + } + if create { + t.callstack[0].Type = "CREATE" + } +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (t *callTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) { + t.callstack[0].GasUsed = uintToHex(gasUsed) + if err != nil { + t.callstack[0].Error = err.Error() + if err.Error() == "execution reverted" && len(output) > 0 { + t.callstack[0].Output = bytesToHex(output) + } + } else { + t.callstack[0].Output = bytesToHex(output) + } +} + +// CaptureState implements the EVMLogger interface to trace a single step of VM execution. +func (t *callTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { +} + +// CaptureFault implements the EVMLogger interface to trace an execution fault. +func (t *callTracer) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, _ *vm.ScopeContext, depth int, err error) { +} + +// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct). +func (t *callTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { + // Skip if tracing was interrupted + if atomic.LoadUint32(&t.interrupt) > 0 { + t.env.Cancel() + return + } + + call := callFrame{ + Type: typ.String(), + From: addrToHex(from), + To: addrToHex(to), + Input: bytesToHex(input), + Gas: uintToHex(gas), + Value: bigToHex(value), + } + t.callstack = append(t.callstack, call) +} + +// CaptureExit is called when EVM exits a scope, even if the scope didn't +// execute any code. +func (t *callTracer) CaptureExit(output []byte, gasUsed uint64, err error) { + size := len(t.callstack) + if size <= 1 { + return + } + // pop call + call := t.callstack[size-1] + t.callstack = t.callstack[:size-1] + size -= 1 + + call.GasUsed = uintToHex(gasUsed) + if err == nil { + call.Output = bytesToHex(output) + } else { + call.Error = err.Error() + if call.Type == "CREATE" || call.Type == "CREATE2" { + call.To = "" + } + } + t.callstack[size-1].Calls = append(t.callstack[size-1].Calls, call) +} + +// GetResult returns the json-encoded nested list of call traces, and any +// error arising from the encoding or forceful termination (via `Stop`). +func (t *callTracer) GetResult() (json.RawMessage, error) { + if len(t.callstack) != 1 { + return nil, errors.New("incorrect number of top-level calls") + } + res, err := json.Marshal(t.callstack[0]) + if err != nil { + return nil, err + } + return json.RawMessage(res), t.reason +} + +// Stop terminates execution of the tracer at the first opportune moment. +func (t *callTracer) Stop(err error) { + t.reason = err + atomic.StoreUint32(&t.interrupt, 1) +} + +func bytesToHex(s []byte) string { + return "0x" + common.Bytes2Hex(s) +} + +func bigToHex(n *big.Int) string { + if n == nil { + return "" + } + return "0x" + n.Text(16) +} + +func uintToHex(n uint64) string { + return "0x" + strconv.FormatUint(n, 16) +} + +func addrToHex(a common.Address) string { + return strings.ToLower(a.Hex()) +} diff --git a/eth/tracers/native/noop.go b/eth/tracers/native/noop.go new file mode 100644 index 000000000000..ee110ef7df90 --- /dev/null +++ b/eth/tracers/native/noop.go @@ -0,0 +1,74 @@ +// Copyright 2021 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 . + +package native + +import ( + "encoding/json" + "math/big" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/eth/tracers" +) + +func init() { + register("noopTracerNative", newNoopTracer) +} + +// noopTracer is a go implementation of the Tracer interface which +// performs no action. It's mostly useful for testing purposes. +type noopTracer struct{} + +// newNoopTracer returns a new noop tracer. +func newNoopTracer() tracers.Tracer { + return &noopTracer{} +} + +// CaptureStart implements the EVMLogger interface to initialize the tracing operation. +func (t *noopTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) { +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (t *noopTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) { +} + +// CaptureState implements the EVMLogger interface to trace a single step of VM execution. +func (t *noopTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) { +} + +// CaptureFault implements the EVMLogger interface to trace an execution fault. +func (t *noopTracer) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, _ *vm.ScopeContext, depth int, err error) { +} + +// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct). +func (t *noopTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) { +} + +// CaptureExit is called when EVM exits a scope, even if the scope didn't +// execute any code. +func (t *noopTracer) CaptureExit(output []byte, gasUsed uint64, err error) { +} + +// GetResult returns an empty json object. +func (t *noopTracer) GetResult() (json.RawMessage, error) { + return json.RawMessage(`{}`), nil +} + +// Stop terminates execution of the tracer at the first opportune moment. +func (t *noopTracer) Stop(err error) { +} diff --git a/eth/tracers/native/tracer.go b/eth/tracers/native/tracer.go new file mode 100644 index 000000000000..3158654f33fc --- /dev/null +++ b/eth/tracers/native/tracer.go @@ -0,0 +1,79 @@ +// Copyright 2021 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 . + +/* +Package native is a collection of tracers written in go. + +In order to add a native tracer and have it compiled into the binary, a new +file needs to be added to this folder, containing an implementation of the +`eth.tracers.Tracer` interface. + +Aside from implementing the tracer, it also needs to register itself, using the +`register` method -- and this needs to be done in the package initialization. + +Example: + +```golang +func init() { + register("noopTracerNative", newNoopTracer) +} +``` +*/ +package native + +import ( + "errors" + + "github.com/ethereum/go-ethereum/eth/tracers" +) + +// init registers itself this packages as a lookup for tracers. +func init() { + tracers.RegisterLookup(false, lookup) +} + +/* +ctors is a map of package-local tracer constructors. + +We cannot be certain about the order of init-functions within a package, +The go spec (https://golang.org/ref/spec#Package_initialization) says + +> To ensure reproducible initialization behavior, build systems +> are encouraged to present multiple files belonging to the same +> package in lexical file name order to a compiler. + +Hence, we cannot make the map in init, but must make it upon first use. +*/ +var ctors map[string]func() tracers.Tracer + +// register is used by native tracers to register their presence. +func register(name string, ctor func() tracers.Tracer) { + if ctors == nil { + ctors = make(map[string]func() tracers.Tracer) + } + ctors[name] = ctor +} + +// lookup returns a tracer, if one can be matched to the given name. +func lookup(name string, ctx *tracers.Context) (tracers.Tracer, error) { + if ctors == nil { + ctors = make(map[string]func() tracers.Tracer) + } + if ctor, ok := ctors[name]; ok { + return ctor(), nil + } + return nil, errors.New("no tracer found") +} diff --git a/eth/tracers/tracers.go b/eth/tracers/tracers.go index 4e1ef23ad2f8..e7073e7d2edf 100644 --- a/eth/tracers/tracers.go +++ b/eth/tracers/tracers.go @@ -14,40 +14,59 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// Package tracers is a collection of JavaScript transaction tracers. +// Package tracers is a manager for transaction tracing engines. package tracers import ( - "strings" - "unicode" + "encoding/json" + "errors" - "github.com/ethereum/go-ethereum/eth/tracers/internal/tracers" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/vm" ) -// all contains all the built in JavaScript tracers by name. -var all = make(map[string]string) +// Context contains some contextual infos for a transaction execution that is not +// available from within the EVM object. +type Context struct { + BlockHash common.Hash // Hash of the block the tx is contained within (zero if dangling tx or call) + TxIndex int // Index of the transaction within a block (zero if dangling tx or call) + TxHash common.Hash // Hash of the transaction being traced (zero if dangling call) +} -// camel converts a snake cased input string into a camel cased output. -func camel(str string) string { - pieces := strings.Split(str, "_") - for i := 1; i < len(pieces); i++ { - pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] - } - return strings.Join(pieces, "") +// Tracer interface extends vm.EVMLogger and additionally +// allows collecting the tracing result. +type Tracer interface { + vm.EVMLogger + GetResult() (json.RawMessage, error) + // Stop terminates execution of the tracer at the first opportune moment. + Stop(err error) } -// init retrieves the JavaScript transaction tracers included in go-ethereum. -func init() { - for _, file := range tracers.AssetNames() { - name := camel(strings.TrimSuffix(file, ".js")) - all[name] = string(tracers.MustAsset(file)) +type lookupFunc func(string, *Context) (Tracer, error) + +var ( + lookups []lookupFunc +) + +// RegisterLookup registers a method as a lookup for tracers, meaning that +// users can invoke a named tracer through that lookup. If 'wildcard' is true, +// then the lookup will be placed last. This is typically meant for interpreted +// engines (js) which can evaluate dynamic user-supplied code. +func RegisterLookup(wildcard bool, lookup lookupFunc) { + if wildcard { + lookups = append(lookups, lookup) + } else { + lookups = append([]lookupFunc{lookup}, lookups...) } } -// tracer retrieves a specific JavaScript tracer by name. -func tracer(name string) (string, bool) { - if tracer, ok := all[name]; ok { - return tracer, true +// New returns a new instance of a tracer, by iterating through the +// registered lookups. +func New(code string, ctx *Context) (Tracer, error) { + for _, lookup := range lookups { + if tracer, err := lookup(code, ctx); err == nil { + return tracer, nil + } } - return "", false + return nil, errors.New("tracer not found") } diff --git a/eth/tracers/tracers_test.go b/eth/tracers/tracers_test.go index 0bc4cd81e620..a3f5fc361d9b 100644 --- a/eth/tracers/tracers_test.go +++ b/eth/tracers/tracers_test.go @@ -17,79 +17,20 @@ package tracers import ( - "crypto/ecdsa" - "crypto/rand" - "encoding/json" - "io/ioutil" "math/big" - "path/filepath" - "reflect" - "strings" "testing" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" - "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/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/tests" ) -// To generate a new callTracer test, copy paste the makeTest method below into -// a Geth console and call it with a transaction hash you which to export. - -/* -// makeTest generates a callTracer test by running a prestate reassembled and a -// call trace run, assembling all the gathered information into a test case. -var makeTest = function(tx, rewind) { - // Generate the genesis block from the block, transaction and prestate data - var block = eth.getBlock(eth.getTransaction(tx).blockHash); - var genesis = eth.getBlock(block.parentHash); - - delete genesis.gasUsed; - delete genesis.logsBloom; - delete genesis.parentHash; - delete genesis.receiptsRoot; - delete genesis.sha3Uncles; - delete genesis.size; - delete genesis.transactions; - delete genesis.transactionsRoot; - delete genesis.uncles; - - genesis.gasLimit = genesis.gasLimit.toString(); - genesis.number = genesis.number.toString(); - genesis.timestamp = genesis.timestamp.toString(); - - genesis.alloc = debug.traceTransaction(tx, {tracer: "prestateTracer", rewind: rewind}); - for (var key in genesis.alloc) { - genesis.alloc[key].nonce = genesis.alloc[key].nonce.toString(); - } - genesis.config = admin.nodeInfo.protocols.eth.config; - - // Generate the call trace and produce the test input - var result = debug.traceTransaction(tx, {tracer: "callTracer", rewind: rewind}); - delete result.time; - - console.log(JSON.stringify({ - genesis: genesis, - context: { - number: block.number.toString(), - difficulty: block.difficulty, - timestamp: block.timestamp.toString(), - gasLimit: block.gasLimit.toString(), - miner: block.miner, - }, - input: eth.getRawTransaction(tx), - result: result, - }, null, 2)); -} -*/ - // callTrace is the result of a callTracer run. type callTrace struct { Type string `json:"type"` @@ -104,203 +45,6 @@ type callTrace struct { Calls []callTrace `json:"calls,omitempty"` } -type callContext struct { - Number math.HexOrDecimal64 `json:"number"` - Difficulty *math.HexOrDecimal256 `json:"difficulty"` - Time math.HexOrDecimal64 `json:"timestamp"` - GasLimit math.HexOrDecimal64 `json:"gasLimit"` - Miner common.Address `json:"miner"` -} - -// callTracerTest defines a single test to check the call tracer against. -type callTracerTest struct { - Genesis *core.Genesis `json:"genesis"` - Context *callContext `json:"context"` - Input string `json:"input"` - Result *callTrace `json:"result"` -} - -func TestPrestateTracerCreate2(t *testing.T) { - unsignedTx := types.NewTransaction(1, common.HexToAddress("0x00000000000000000000000000000000deadbeef"), - new(big.Int), 5000000, big.NewInt(1), []byte{}) - - privateKeyECDSA, err := ecdsa.GenerateKey(crypto.S256(), rand.Reader) - if err != nil { - t.Fatalf("err %v", err) - } - signer := types.NewEIP155Signer(big.NewInt(1)) - tx, err := types.SignTx(unsignedTx, signer, privateKeyECDSA) - if err != nil { - t.Fatalf("err %v", err) - } - /** - This comes from one of the test-vectors on the Skinny Create2 - EIP - - address 0x00000000000000000000000000000000deadbeef - salt 0x00000000000000000000000000000000000000000000000000000000cafebabe - init_code 0xdeadbeef - gas (assuming no mem expansion): 32006 - result: 0x60f3f640a8508fC6a86d45DF051962668E1e8AC7 - */ - origin, _ := signer.Sender(tx) - txContext := vm.TxContext{ - Origin: origin, - GasPrice: big.NewInt(1), - } - context := vm.BlockContext{ - CanTransfer: core.CanTransfer, - Transfer: core.Transfer, - Coinbase: common.Address{}, - BlockNumber: new(big.Int).SetUint64(8000000), - Time: new(big.Int).SetUint64(5), - Difficulty: big.NewInt(0x30000), - GasLimit: uint64(6000000), - } - alloc := core.GenesisAlloc{} - - // The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns - // the address - alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{ - Nonce: 1, - Code: hexutil.MustDecode("0x63deadbeef60005263cafebabe6004601c6000F560005260206000F3"), - Balance: big.NewInt(1), - } - alloc[origin] = core.GenesisAccount{ - Nonce: 1, - Code: []byte{}, - Balance: big.NewInt(500000000000000), - } - _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false) - - // Create the tracer, the EVM environment and run it - tracer, err := New("prestateTracer", txContext) - if err != nil { - t.Fatalf("failed to create call tracer: %v", err) - } - evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tracer}) - - msg, err := tx.AsMessage(signer) - if err != nil { - t.Fatalf("failed to prepare transaction for tracing: %v", err) - } - st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) - if _, err = st.TransitionDb(); err != nil { - t.Fatalf("failed to execute transaction: %v", err) - } - // Retrieve the trace result and compare against the etalon - res, err := tracer.GetResult() - if err != nil { - t.Fatalf("failed to retrieve trace result: %v", err) - } - ret := make(map[string]interface{}) - if err := json.Unmarshal(res, &ret); err != nil { - t.Fatalf("failed to unmarshal trace result: %v", err) - } - if _, has := ret["0x60f3f640a8508fc6a86d45df051962668e1e8ac7"]; !has { - t.Fatalf("Expected 0x60f3f640a8508fc6a86d45df051962668e1e8ac7 in result") - } -} - -// Iterates over all the input-output datasets in the tracer test harness and -// runs the JavaScript tracers against them. -func TestCallTracer(t *testing.T) { - files, err := ioutil.ReadDir("testdata") - if err != nil { - t.Fatalf("failed to retrieve tracer test suite: %v", err) - } - for _, file := range files { - if !strings.HasPrefix(file.Name(), "call_tracer_") { - continue - } - file := file // capture range variable - t.Run(camel(strings.TrimSuffix(strings.TrimPrefix(file.Name(), "call_tracer_"), ".json")), func(t *testing.T) { - t.Parallel() - - // Call tracer test found, read if from disk - blob, err := ioutil.ReadFile(filepath.Join("testdata", file.Name())) - if err != nil { - t.Fatalf("failed to read testcase: %v", err) - } - test := new(callTracerTest) - if err := json.Unmarshal(blob, test); err != nil { - t.Fatalf("failed to parse testcase: %v", err) - } - // Configure a blockchain with the given prestate - tx := new(types.Transaction) - if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil { - t.Fatalf("failed to parse testcase input: %v", err) - } - signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number))) - origin, _ := signer.Sender(tx) - txContext := vm.TxContext{ - Origin: origin, - GasPrice: tx.GasPrice(), - } - context := vm.BlockContext{ - CanTransfer: core.CanTransfer, - Transfer: core.Transfer, - Coinbase: test.Context.Miner, - BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)), - Time: new(big.Int).SetUint64(uint64(test.Context.Time)), - Difficulty: (*big.Int)(test.Context.Difficulty), - GasLimit: uint64(test.Context.GasLimit), - } - _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false) - - // Create the tracer, the EVM environment and run it - tracer, err := New("callTracer", txContext) - if err != nil { - t.Fatalf("failed to create call tracer: %v", err) - } - evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer}) - - msg, err := tx.AsMessage(signer) - if err != nil { - t.Fatalf("failed to prepare transaction for tracing: %v", err) - } - st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas())) - if _, err = st.TransitionDb(); err != nil { - t.Fatalf("failed to execute transaction: %v", err) - } - // Retrieve the trace result and compare against the etalon - res, err := tracer.GetResult() - if err != nil { - t.Fatalf("failed to retrieve trace result: %v", err) - } - ret := new(callTrace) - if err := json.Unmarshal(res, ret); err != nil { - t.Fatalf("failed to unmarshal trace result: %v", err) - } - - if !jsonEqual(ret, test.Result) { - // uncomment this for easier debugging - //have, _ := json.MarshalIndent(ret, "", " ") - //want, _ := json.MarshalIndent(test.Result, "", " ") - //t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want)) - t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result) - } - }) - } -} - -// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to -// comparison -func jsonEqual(x, y interface{}) bool { - xTrace := new(callTrace) - yTrace := new(callTrace) - if xj, err := json.Marshal(x); err == nil { - json.Unmarshal(xj, xTrace) - } else { - return false - } - if yj, err := json.Marshal(y); err == nil { - json.Unmarshal(yj, yTrace) - } else { - return false - } - return reflect.DeepEqual(xTrace, yTrace) -} - func BenchmarkTransactionTrace(b *testing.B) { key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") from := crypto.PubkeyToAddress(key.PublicKey) @@ -353,8 +97,8 @@ func BenchmarkTransactionTrace(b *testing.B) { tracer := vm.NewStructLogger(&vm.LogConfig{ Debug: false, //DisableStorage: true, - //DisableMemory: true, - //DisableReturnData: true, + //EnableMemory: false, + //EnableReturnData: false, }) evm := vm.NewEVM(context, txContext, statedb, params.AllEthashProtocolChanges, vm.Config{Debug: true, Tracer: tracer}) msg, err := tx.AsMessage(signer) diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go index 1934412c9014..2975720b8ac4 100644 --- a/internal/web3ext/web3ext.go +++ b/internal/web3ext/web3ext.go @@ -419,6 +419,12 @@ web3._extend({ params: 2, inputFormatter: [null, null] }), + new web3._extend.Method({ + name: 'intermediateRoots', + call: 'debug_intermediateRoots', + params: 2, + inputFormatter: [null, null] + }), new web3._extend.Method({ name: 'standardTraceBlockToFile', call: 'debug_standardTraceBlockToFile', diff --git a/les/api_backend.go b/les/api_backend.go index c8eca2d90597..243a0ac811b2 100644 --- a/les/api_backend.go +++ b/les/api_backend.go @@ -305,7 +305,7 @@ func (b *LesApiBackend) CurrentHeader() *types.Header { return b.eth.blockchain.CurrentHeader() } -func (b *LesApiBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error) { +func (b *LesApiBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (*state.StateDB, error) { return b.eth.stateAtBlock(ctx, block, reexec) } diff --git a/tests/state_test.go b/tests/state_test.go index c1d9f6a0dc93..bb80a162aa38 100644 --- a/tests/state_test.go +++ b/tests/state_test.go @@ -105,7 +105,7 @@ func withTrace(t *testing.T, gasLimit uint64, test func(vm.Config) error) { } buf := new(bytes.Buffer) w := bufio.NewWriter(buf) - tracer := vm.NewJSONLogger(&vm.LogConfig{DisableMemory: true}, w) + tracer := vm.NewJSONLogger(&vm.LogConfig{}, w) config.Debug, config.Tracer = true, tracer err2 := test(config) if !errors.Is(err, err2) {