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abi: fix checks when all fields are indexed (#24792)

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This PR fixes abi checks in the edge case where all arguments are indexed
This commit is contained in:
Rachel Franks 2022-05-06 09:45:57 -05:00 committed by GitHub
parent 1b26991bec
commit 345b1fb827
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 4 deletions
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8
accounts/abi/argument.go
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@ -78,7 +78,7 @@ func (arguments Arguments) isTuple() bool {
// Unpack performs the operation hexdata -> Go format. // Unpack performs the operation hexdata -> Go format.
func (arguments Arguments) Unpack(data []byte) ([]interface{}, error) { func (arguments Arguments) Unpack(data []byte) ([]interface{}, error) {
if len(data) == 0 { if len(data) == 0 {
if len(arguments) != 0 { if len(arguments.NonIndexed()) != 0 {
return nil, fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected") return nil, fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected")
} }
return make([]interface{}, 0), nil return make([]interface{}, 0), nil
@ -93,7 +93,7 @@ func (arguments Arguments) UnpackIntoMap(v map[string]interface{}, data []byte)
return fmt.Errorf("abi: cannot unpack into a nil map") return fmt.Errorf("abi: cannot unpack into a nil map")
} }
if len(data) == 0 { if len(data) == 0 {
if len(arguments) != 0 { if len(arguments.NonIndexed()) != 0 {
return fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected") return fmt.Errorf("abi: attempting to unmarshall an empty string while arguments are expected")
} }
return nil // Nothing to unmarshal, return return nil // Nothing to unmarshal, return
@ -115,8 +115,8 @@ func (arguments Arguments) Copy(v interface{}, values []interface{}) error {
return fmt.Errorf("abi: Unpack(non-pointer %T)", v) return fmt.Errorf("abi: Unpack(non-pointer %T)", v)
} }
if len(values) == 0 { if len(values) == 0 {
if len(arguments) != 0 { if len(arguments.NonIndexed()) != 0 {
return fmt.Errorf("abi: attempting to copy no values while %d arguments are expected", len(arguments)) return fmt.Errorf("abi: attempting to copy no values while arguments are expected")
} }
return nil // Nothing to copy, return return nil // Nothing to copy, return
} }

17
accounts/abi/unpack_test.go
View File

@ -201,6 +201,23 @@ var unpackTests = []unpackTest{
IntOne *big.Int IntOne *big.Int
}{big.NewInt(1)}, }{big.NewInt(1)},
}, },
{
def: `[{"type":"bool"}]`,
enc: "",
want: false,
err: "abi: attempting to unmarshall an empty string while arguments are expected",
},
{
def: `[{"type":"bytes32","indexed":true},{"type":"uint256","indexed":false}]`,
enc: "",
want: false,
err: "abi: attempting to unmarshall an empty string while arguments are expected",
},
{
def: `[{"type":"bool","indexed":true},{"type":"uint64","indexed":true}]`,
enc: "",
want: false,
},
} }
// TestLocalUnpackTests runs test specially designed only for unpacking. // TestLocalUnpackTests runs test specially designed only for unpacking.