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tests/fuzzers/abi: add fuzzer for fuzzing package accounts/abi (#21217)

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* tests/fuzzers/abi: added abi fuzzer

* accounts/abi: fixed issues found by fuzzing

* tests/fuzzers/abi: update fuzzers, added repro test

* tests/fuzzers/abi: renamed abi_fuzzer to abifuzzer

* tests/fuzzers/abi: updated abi fuzzer

* tests/fuzzers/abi: updated abi fuzzer

* accounts/abi: minor style fix

* go.mod: added go-fuzz dependency

* tests/fuzzers/abi: updated abi fuzzer

* tests/fuzzers/abi: make linter happy

* tests/fuzzers/abi: make linter happy

* tests/fuzzers/abi: comment out false positives
This commit is contained in:
Marius van der Wijden
2020-09-16 13:15:22 +02:00
committed by GitHub
parent 93f047023f
commit 89884dc353
9 changed files with 266 additions and 14 deletions
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23
accounts/abi/pack.go
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@ -17,6 +17,8 @@
package abi
import (
"errors"
"fmt"
"math/big"
"reflect"
@ -33,35 +35,38 @@ func packBytesSlice(bytes []byte, l int) []byte {
// packElement packs the given reflect value according to the abi specification in
// t.
func packElement(t Type, reflectValue reflect.Value) []byte {
func packElement(t Type, reflectValue reflect.Value) ([]byte, error) {
switch t.T {
case IntTy, UintTy:
return packNum(reflectValue)
return packNum(reflectValue), nil
case StringTy:
return packBytesSlice([]byte(reflectValue.String()), reflectValue.Len())
return packBytesSlice([]byte(reflectValue.String()), reflectValue.Len()), nil
case AddressTy:
if reflectValue.Kind() == reflect.Array {
reflectValue = mustArrayToByteSlice(reflectValue)
}
return common.LeftPadBytes(reflectValue.Bytes(), 32)
return common.LeftPadBytes(reflectValue.Bytes(), 32), nil
case BoolTy:
if reflectValue.Bool() {
return math.PaddedBigBytes(common.Big1, 32)
return math.PaddedBigBytes(common.Big1, 32), nil
}
return math.PaddedBigBytes(common.Big0, 32)
return math.PaddedBigBytes(common.Big0, 32), nil
case BytesTy:
if reflectValue.Kind() == reflect.Array {
reflectValue = mustArrayToByteSlice(reflectValue)
}
return packBytesSlice(reflectValue.Bytes(), reflectValue.Len())
if reflectValue.Type() != reflect.TypeOf([]byte{}) {
return []byte{}, errors.New("Bytes type is neither slice nor array")
}
return packBytesSlice(reflectValue.Bytes(), reflectValue.Len()), nil
case FixedBytesTy, FunctionTy:
if reflectValue.Kind() == reflect.Array {
reflectValue = mustArrayToByteSlice(reflectValue)
}
return common.RightPadBytes(reflectValue.Bytes(), 32)
return common.RightPadBytes(reflectValue.Bytes(), 32), nil
default:
panic("abi: fatal error")
return []byte{}, fmt.Errorf("Could not pack element, unknown type: %v", t.T)
}
}