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eth/tracers: remove revertReasonTracer, add revert reason to callTracer (#25508)

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* eth/tracers: add revertReason to callTracer

* update callframe gen json

* add revertal to calltrace test
This commit is contained in:
Sina Mahmoodi 2022-09-29 04:36:07 -05:00 committed by GitHub
parent c2918c2f47
commit ff1f49245d
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 58 additions and 149 deletions
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21
eth/tracers/internal/tracetest/calltrace_test.go
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@ -104,16 +104,17 @@ type callContext struct {
// 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"`
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"`
Revertal string `json:"revertReason,omitempty"`
Calls []callTrace `json:"calls,omitempty"`
}
// callTracerTest defines a single test to check the call tracer against.

3
eth/tracers/internal/tracetest/testdata/call_tracer/revert_reason.json vendored
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@ -59,6 +59,7 @@
"to": "0xf58833cf0c791881b494eb79d461e08a1f043f52",
"type": "CALL",
"value": "0x0",
"output": "0x08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001e53656c662d64656c65676174696f6e20697320646973616c6c6f7765642e0000"
"output": "0x08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001e53656c662d64656c65676174696f6e20697320646973616c6c6f7765642e0000",
"revertReason": "Self-delegation is disallowed."
}
}

39
eth/tracers/native/call.go
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@ -23,6 +23,7 @@ import (
"sync/atomic"
"time"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/vm"
@ -36,15 +37,16 @@ func init() {
}
type callFrame struct {
Type vm.OpCode `json:"-"`
From common.Address `json:"from"`
Gas uint64 `json:"gas"`
GasUsed uint64 `json:"gasUsed"`
To common.Address `json:"to,omitempty" rlp:"optional"`
Input []byte `json:"input" rlp:"optional"`
Output []byte `json:"output,omitempty" rlp:"optional"`
Error string `json:"error,omitempty" rlp:"optional"`
Calls []callFrame `json:"calls,omitempty" rlp:"optional"`
Type vm.OpCode `json:"-"`
From common.Address `json:"from"`
Gas uint64 `json:"gas"`
GasUsed uint64 `json:"gasUsed"`
To common.Address `json:"to,omitempty" rlp:"optional"`
Input []byte `json:"input" rlp:"optional"`
Output []byte `json:"output,omitempty" rlp:"optional"`
Error string `json:"error,omitempty" rlp:"optional"`
Revertal string `json:"revertReason,omitempty"`
Calls []callFrame `json:"calls,omitempty" rlp:"optional"`
// Placed at end on purpose. The RLP will be decoded to 0 instead of
// nil if there are non-empty elements after in the struct.
Value *big.Int `json:"value,omitempty" rlp:"optional"`
@ -109,13 +111,20 @@ func (t *callTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Ad
func (t *callTracer) CaptureEnd(output []byte, gasUsed uint64, _ time.Duration, err error) {
t.callstack[0].GasUsed = gasUsed
output = common.CopyBytes(output)
if err != nil {
t.callstack[0].Error = err.Error()
if err.Error() == "execution reverted" && len(output) > 0 {
t.callstack[0].Output = output
}
} else {
if err == nil {
t.callstack[0].Output = output
return
}
t.callstack[0].Error = err.Error()
if !errors.Is(err, vm.ErrExecutionReverted) || len(output) == 0 {
return
}
t.callstack[0].Output = output
if len(output) < 4 {
return
}
if unpacked, err := abi.UnpackRevert(output); err == nil {
t.callstack[0].Revertal = unpacked
}
}

36
eth/tracers/native/gen_callframe_json.go
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@ -18,12 +18,13 @@ func (c callFrame) MarshalJSON() ([]byte, error) {
type callFrame0 struct {
Type vm.OpCode `json:"-"`
From common.Address `json:"from"`
To common.Address `json:"to,omitempty" rlp:"optional"`
Gas hexutil.Uint64 `json:"gas"`
GasUsed hexutil.Uint64 `json:"gasUsed"`
To common.Address `json:"to,omitempty" rlp:"optional"`
Input hexutil.Bytes `json:"input" rlp:"optional"`
Output hexutil.Bytes `json:"output,omitempty" rlp:"optional"`
Error string `json:"error,omitempty" rlp:"optional"`
Revertal string `json:"revertReason,omitempty"`
Calls []callFrame `json:"calls,omitempty" rlp:"optional"`
Value *hexutil.Big `json:"value,omitempty" rlp:"optional"`
TypeString string `json:"type"`
@ -31,12 +32,13 @@ func (c callFrame) MarshalJSON() ([]byte, error) {
var enc callFrame0
enc.Type = c.Type
enc.From = c.From
enc.To = c.To
enc.Gas = hexutil.Uint64(c.Gas)
enc.GasUsed = hexutil.Uint64(c.GasUsed)
enc.To = c.To
enc.Input = c.Input
enc.Output = c.Output
enc.Error = c.Error
enc.Revertal = c.Revertal
enc.Calls = c.Calls
enc.Value = (*hexutil.Big)(c.Value)
enc.TypeString = c.TypeString()
@ -46,16 +48,17 @@ func (c callFrame) MarshalJSON() ([]byte, error) {
// UnmarshalJSON unmarshals from JSON.
func (c *callFrame) UnmarshalJSON(input []byte) error {
type callFrame0 struct {
Type *vm.OpCode `json:"-"`
From *common.Address `json:"from"`
To *common.Address `json:"to,omitempty" rlp:"optional"`
Gas *hexutil.Uint64 `json:"gas"`
GasUsed *hexutil.Uint64 `json:"gasUsed"`
Input *hexutil.Bytes `json:"input" rlp:"optional"`
Output *hexutil.Bytes `json:"output,omitempty" rlp:"optional"`
Error *string `json:"error,omitempty" rlp:"optional"`
Calls []callFrame `json:"calls,omitempty" rlp:"optional"`
Value *hexutil.Big `json:"value,omitempty" rlp:"optional"`
Type *vm.OpCode `json:"-"`
From *common.Address `json:"from"`
Gas *hexutil.Uint64 `json:"gas"`
GasUsed *hexutil.Uint64 `json:"gasUsed"`
To *common.Address `json:"to,omitempty" rlp:"optional"`
Input *hexutil.Bytes `json:"input" rlp:"optional"`
Output *hexutil.Bytes `json:"output,omitempty" rlp:"optional"`
Error *string `json:"error,omitempty" rlp:"optional"`
Revertal *string `json:"revertReason,omitempty"`
Calls []callFrame `json:"calls,omitempty" rlp:"optional"`
Value *hexutil.Big `json:"value,omitempty" rlp:"optional"`
}
var dec callFrame0
if err := json.Unmarshal(input, &dec); err != nil {
@ -67,15 +70,15 @@ func (c *callFrame) UnmarshalJSON(input []byte) error {
if dec.From != nil {
c.From = *dec.From
}
if dec.To != nil {
c.To = *dec.To
}
if dec.Gas != nil {
c.Gas = uint64(*dec.Gas)
}
if dec.GasUsed != nil {
c.GasUsed = uint64(*dec.GasUsed)
}
if dec.To != nil {
c.To = *dec.To
}
if dec.Input != nil {
c.Input = *dec.Input
}
@ -85,6 +88,9 @@ func (c *callFrame) UnmarshalJSON(input []byte) error {
if dec.Error != nil {
c.Error = *dec.Error
}
if dec.Revertal != nil {
c.Revertal = *dec.Revertal
}
if dec.Calls != nil {
c.Calls = dec.Calls
}

108
eth/tracers/native/revertreason.go
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@ -1,108 +0,0 @@
// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package native
import (
"bytes"
"encoding/json"
"math/big"
"sync/atomic"
"time"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth/tracers"
)
func init() {
register("revertReasonTracer", newRevertReasonTracer)
}
var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4]
// revertReasonTracer is a go implementation of the Tracer interface which
// track the error message or revert reason return by the contract.
type revertReasonTracer struct {
env *vm.EVM
revertReason string // The revert reason return from the tx, if tx success, empty string return
interrupt uint32 // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
}
// newRevertReasonTracer returns a new revert reason tracer.
func newRevertReasonTracer(_ *tracers.Context, _ json.RawMessage) (tracers.Tracer, error) {
return &revertReasonTracer{}, nil
}
// CaptureStart implements the EVMLogger interface to initialize the tracing operation.
func (t *revertReasonTracer) CaptureStart(env *vm.EVM, _ common.Address, _ common.Address, _ bool, _ []byte, _ uint64, _ *big.Int) {
t.env = env
}
// CaptureEnd is called after the call finishes to finalize the tracing.
func (t *revertReasonTracer) CaptureEnd(output []byte, _ uint64, _ time.Duration, err error) {
if err != nil {
if err == vm.ErrExecutionReverted && len(output) > 4 && bytes.Equal(output[:4], revertSelector) {
errMsg, _ := abi.UnpackRevert(output)
t.revertReason = err.Error() + ": " + errMsg
} else {
t.revertReason = err.Error()
}
}
}
// CaptureState implements the EVMLogger interface to trace a single step of VM execution.
func (t *revertReasonTracer) CaptureState(_ uint64, _ vm.OpCode, _, _ uint64, _ *vm.ScopeContext, _ []byte, _ int, _ error) {
}
// CaptureFault implements the EVMLogger interface to trace an execution fault.
func (t *revertReasonTracer) CaptureFault(_ uint64, _ vm.OpCode, _, _ uint64, _ *vm.ScopeContext, _ int, _ error) {
}
// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
func (t *revertReasonTracer) CaptureEnter(_ vm.OpCode, _ common.Address, _ common.Address, _ []byte, _ uint64, _ *big.Int) {
// Skip if tracing was interrupted
if atomic.LoadUint32(&t.interrupt) > 0 {
t.env.Cancel()
return
}
}
// CaptureExit is called when EVM exits a scope, even if the scope didn't
// execute any code.
func (t *revertReasonTracer) CaptureExit(_ []byte, _ uint64, _ error) {}
func (t *revertReasonTracer) CaptureTxStart(_ uint64) {}
func (t *revertReasonTracer) CaptureTxEnd(_ uint64) {}
// GetResult returns an error message json object.
func (t *revertReasonTracer) GetResult() (json.RawMessage, error) {
res, err := json.Marshal(t.revertReason)
if err != nil {
return nil, err
}
return res, t.reason
}
// Stop terminates execution of the tracer at the first opportune moment.
func (t *revertReasonTracer) Stop(err error) {
t.reason = err
atomic.StoreUint32(&t.interrupt, 1)
}