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Fixed more new failing tests and deanonymised some functions

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This commit is contained in:
Paul Berg 2018-11-14 00:25:18 +02:00
parent 7419d513f3
commit 9855fdeec8
2 changed files with 317 additions and 286 deletions
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173
signer/core/signed_data.go
View file

@ -365,92 +365,28 @@ func (typedData *TypedData) TypeHash(primaryType string) hexutil.Bytes {
//
// each encoded member is 32-byte long
func (typedData *TypedData) EncodeData(primaryType string, data map[string]interface{}) (hexutil.Bytes, error) {
encTypes := []string{}
encValues := []interface{}{}
// Verify extra data
if len(typedData.Types[primaryType]) < len(data) {
return nil, errors.New("there is extra data provided in the message")
}
// Add typehash
encTypes = append(encTypes, "bytes32")
encValues = append(encValues, typedData.TypeHash(primaryType))
// Generate error for a mismatch between the provided type and data
dataMismatchError := func(encType string, encValue interface{}) error {
return fmt.Errorf("provided data '%v' doesn't match type '%s'", encValue, encType)
}
// Handle primitive values
handlePrimitiveValue := func(encType string, encValue interface{}) (string, interface{}, error) {
var primitiveEncType string
var primitiveEncValue interface{}
switch encType {
case "address":
primitiveEncType = "uint160"
bytesValue := hexutil.Bytes{}
for i := 0; i < 12; i++ {
bytesValue = append(bytesValue, 0)
}
stringValue, ok := encValue.(string)
if !ok || !common.IsHexAddress(stringValue) {
return "", nil, dataMismatchError(encType, encValue)
}
for _, _byte := range common.HexToAddress(stringValue) {
bytesValue = append(bytesValue, _byte)
}
primitiveEncValue = bytesValue
case "bool":
primitiveEncType = "uint256"
var int64Val int64
boolValue, ok := encValue.(bool)
if !ok {
return "", nil, dataMismatchError(encType, encValue)
}
if boolValue {
int64Val = 1
}
primitiveEncValue = abi.U256(big.NewInt(int64Val))
case "bytes", "string":
primitiveEncType = "bytes32"
bytesValue, err := bytesValueOf(encValue)
if err != nil {
return "", nil, dataMismatchError(encType, encValue)
}
primitiveEncValue = crypto.Keccak256(bytesValue)
default:
if strings.HasPrefix(encType, "bytes") {
encTypes = append(encTypes, "bytes32")
sizeStr := strings.TrimPrefix(encType, "bytes")
size, _ := strconv.Atoi(sizeStr)
bytesValue := hexutil.Bytes{}
for i := 0; i < 32-size; i++ {
bytesValue = append(bytesValue, 0)
}
if _, ok := encValue.(hexutil.Bytes); !ok {
return "", nil, dataMismatchError(encType, encValue)
}
bytesValue = append(bytesValue, encValue.(hexutil.Bytes)...)
primitiveEncValue = bytesValue
} else if strings.HasPrefix(encType, "uint") || strings.HasPrefix(encType, "int") {
primitiveEncType = "uint256"
bigIntValue, ok := encValue.(*big.Int)
if !ok {
return "", nil, dataMismatchError(encType, encValue)
}
primitiveEncValue = abi.U256(bigIntValue)
}
}
return primitiveEncType, primitiveEncValue, nil
}
// Add field contents. Structs and arrays have special handlings.
// Add field contents. Structs and arrays have special handlers.
for _, field := range typedData.Types[primaryType] {
encType := field["type"]
encValue := data[field["name"]]
if encType[len(encType)-1:] == "]" {
encTypes = append(encTypes, "bytes32")
arrayValue, ok := encValue.([]interface{})
if !ok {
return nil, dataMismatchError(encType, encValue)
}
parsedType := strings.Split(encType, "[")[0]
arrayBuffer := bytes.Buffer{}
for _, item := range encValue.([]interface{}) {
for _, item := range arrayValue {
if typedData.Types[parsedType] != nil {
mapValue, ok := item.(map[string]interface{})
if !ok {
@ -462,7 +398,7 @@ func (typedData *TypedData) EncodeData(primaryType string, data map[string]inter
}
arrayBuffer.Write(encodedData)
} else {
_, encValue, err := handlePrimitiveValue(encType, encValue)
encValue, err := handlePrimitiveValue(encType, encValue)
if err != nil {
return nil, err
}
@ -475,7 +411,6 @@ func (typedData *TypedData) EncodeData(primaryType string, data map[string]inter
}
encValues = append(encValues, crypto.Keccak256(arrayBuffer.Bytes()))
} else if typedData.Types[field["type"]] != nil {
encTypes = append(encTypes, "bytes32")
mapValue, ok := encValue.(map[string]interface{})
if !ok {
return nil, dataMismatchError(encType, encValue)
@ -487,11 +422,10 @@ func (typedData *TypedData) EncodeData(primaryType string, data map[string]inter
encValue = crypto.Keccak256(encodedData)
encValues = append(encValues, encValue)
} else {
primitiveEncType, primitiveEncValue, err := handlePrimitiveValue(encType, encValue)
primitiveEncValue, err := handlePrimitiveValue(encType, encValue)
if err != nil {
return nil, err
}
encTypes = append(encTypes, primitiveEncType)
encValues = append(encValues, primitiveEncValue)
}
}
@ -508,6 +442,72 @@ func (typedData *TypedData) EncodeData(primaryType string, data map[string]inter
return buffer.Bytes(), nil // https://github.com/ethereumjs/ethereumjs-abi/blob/master/lib/index.js#L336
}
// handlePrimitiveValues deals with the primitive values found
// while searching through the typed data
func handlePrimitiveValue(encType string, encValue interface{}) (interface{}, error) {
var primitiveEncValue interface{}
switch encType {
case "address":
bytesValue := hexutil.Bytes{}
for i := 0; i < 12; i++ {
bytesValue = append(bytesValue, 0)
}
stringValue, ok := encValue.(string)
if !ok || !common.IsHexAddress(stringValue) {
return nil, dataMismatchError(encType, encValue)
}
for _, _byte := range common.HexToAddress(stringValue) {
bytesValue = append(bytesValue, _byte)
}
primitiveEncValue = bytesValue
case "bool":
var int64Val int64
boolValue, ok := encValue.(bool)
if !ok {
return nil, dataMismatchError(encType, encValue)
}
if boolValue {
int64Val = 1
}
primitiveEncValue = abi.U256(big.NewInt(int64Val))
case "bytes", "string":
bytesValue, err := bytesValueOf(encValue)
if err != nil {
return nil, dataMismatchError(encType, encValue)
}
primitiveEncValue = crypto.Keccak256(bytesValue)
default:
if strings.HasPrefix(encType, "bytes") {
sizeStr := strings.TrimPrefix(encType, "bytes")
size, _ := strconv.Atoi(sizeStr)
bytesValue := hexutil.Bytes{}
for i := 0; i < 32-size; i++ {
bytesValue = append(bytesValue, 0)
}
if _, ok := encValue.(hexutil.Bytes); !ok {
return nil, dataMismatchError(encType, encValue)
}
bytesValue = append(bytesValue, encValue.(hexutil.Bytes)...)
primitiveEncValue = bytesValue
} else if strings.HasPrefix(encType, "uint") || strings.HasPrefix(encType, "int") {
bigIntValue, ok := encValue.(*big.Int)
if !ok {
return nil, dataMismatchError(encType, encValue)
}
primitiveEncValue = abi.U256(bigIntValue)
}
}
return primitiveEncValue, nil
}
// dataMismatchError generates an error for a mismatch between
// the provided type and data
func dataMismatchError(encType string, encValue interface{}) error {
return fmt.Errorf("provided data '%v' doesn't match type '%s'", encValue, encType)
}
// bytesValuesOf returns the bytes value of the given interface
func bytesValueOf(_interface interface{}) (hexutil.Bytes, error) {
bytesValue, ok := _interface.(hexutil.Bytes)
if ok {
@ -585,7 +585,7 @@ func UnmarshalValidatorData(data interface{}) (ValidatorData, error) {
}, nil
}
// Validate checks if the typed data is sound
// Validate make sure the types are sound
func (typedData *TypedData) Validate() error {
if err := typedData.Types.Validate(); err != nil {
return err
@ -604,15 +604,9 @@ func (typedData *TypedData) Map() map[string]interface{} {
"primaryType": typedData.PrimaryType,
"message": typedData.Message,
}
return dataMap
}
// PrettyPrint generates a pretty version of the typed data
func (typedData *TypedData) PrettyPrint() string {
return ""
}
// Validate checks if the types object is conformant to the specs
func (types *EIP712Types) Validate() error {
for typeKey, typeArr := range *types {
@ -644,19 +638,18 @@ func (types *EIP712Types) Validate() error {
func isStandardTypeStr(encType string) bool {
// Atomic types
exp, _ := regexp.Compile(`^(address|bool|bytes|string)$`)
if (exp.MatchString(encType)) {
if exp.MatchString(encType) {
return true
}
// Dynamic types
exp, _ = regexp.Compile(`^(bytes|int|uint)(\d+)$`)
if (exp.MatchString(encType)) {
if exp.MatchString(encType) {
return true
}
// Arrays
// TODO: add dynamic type arrays
exp, _ = regexp.Compile(`^(address|bool|bytes|string)\[]$`)
exp, _ = regexp.Compile(`^(address|bool|bytes|string|((bytes|int|uint)(\d+)))\[]$`)
return exp.MatchString(encType)
}

430
signer/core/signed_data_test.go
View file

@ -204,171 +204,14 @@ func TestEncodeData(t *testing.T) {
}
func TestMalformedData1(t *testing.T) {
var data = `
{
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
},
{
"name": "verifyingContract",
"type": "address"
}
],
"Person": [
{
"name": "name",
"type": "string"
},
{
"name": "wallet",
"type": "address"
}
],
"Mail": [
{
"name": "from",
"type": "Person"
},
{
"name": "to",
"type": "Person"
},
{
"name": "contents",
"type": "Person"
}
]
},
"primaryType": "Mail",
"domain": {
"name": "Ether Mail",
"version": "1",
"chainId": 1,
"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
},
"message": {
"from": {
"name": "Cow",
"wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
},
"to": {
"name": "Bob",
"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
},
"contents": "Hello, Bob!"
}
}
`
var typedData TypedData
err := json.Unmarshal([]byte(data), &typedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = typedData.Validate()
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
_, err = typedData.HashStruct(typedData.PrimaryType, typedData.Message)
if err.Error() != "provided data 'Hello, Bob!' doesn't match type 'Person'" {
t.Errorf("Expected `provided data 'Hello, Bob!' doesn't match type 'Person'`, got %v", err)
}
}
func TestMalformedDomainData(t *testing.T) {
var data = `
{
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
},
{
"name": "verifyingContract",
"type": "address"
}
],
"Person": [
{
"name": "name",
"type": "string"
},
{
"name": "wallet",
"type": "address"
}
],
"Mail": [
{
"name": "from",
"type": "Person"
},
{
"name": "to",
"type": "Person"
},
{
"name": "contents",
"type": "Blahonga"
}
]
},
"primaryType": "Mail",
"domain": {
"name": "Ether Mail",
"version": "1",
"chainId": 1,
"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
},
"message": {
"from": {
"name": "Cow",
"wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
},
"to": {
"name": "Bob",
"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
},
"contents": "Hello, Bob!"
}
}`
var typedData TypedData
err := json.Unmarshal([]byte(data), &typedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = typedData.Validate()
if err == nil {
t.Fatalf("Expected `referenced type 'Blahonga' is undefined`, got %v", err)
}
_, err = typedData.HashStruct(typedData.PrimaryType, typedData.Message)
if err.Error() != "unrecognized interface type <nil>" {
t.Errorf("Expected `unrecognized interface type <nil>`, got %v", err)
}
}
func TestMalformedData3(t *testing.T) {
var data = `
// Verifies that malformed domain keys are properly caught:
//{
// "name": "Ether Mail",
// "version": "1",
// "chainId": 1,
// "vxerifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
//}
var jsonTypedData = `
{
"types": {
"EIP712Domain": [
@ -435,23 +278,140 @@ func TestMalformedData3(t *testing.T) {
}
`
var typedData TypedData
err := json.Unmarshal([]byte(data), &typedData)
var malformedTypedData TypedData
err := json.Unmarshal([]byte(jsonTypedData), &malformedTypedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = typedData.Validate()
err = malformedTypedData.Validate()
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
_, err = typedData.HashStruct("EIP712Domain", typedData.Domain.Map())
if err.Error() != "provided data '<nil>' doesn't match type 'address'" {
_, err = malformedTypedData.HashStruct("EIP712Domain", malformedTypedData.Domain.Map())
if err == nil || err.Error() != "provided data '<nil>' doesn't match type 'address'" {
t.Errorf("Expected `provided data '<nil>' doesn't match type 'address'`, got %v", err)
}
}
func TestMalformedData4(t *testing.T) {
var data = `
func TestMalformedData2(t *testing.T) {
// Verifies that:
// 1. Mismatches between the given type and data, i.e. `Person` and
// the data item is a string, are properly caught:
//{
// "name": "contents",
// "type": "Person"
//},
//{
// "contents": "Hello, Bob!" <-- string not "Person"
//}
// 2. Nonexistent types are properly caught:
//{
// "name": "contents",
// "type": "Blahonga"
//}
jsonTypedData := `
{
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
},
{
"name": "verifyingContract",
"type": "address"
}
],
"Person": [
{
"name": "name",
"type": "string"
},
{
"name": "wallet",
"type": "address"
}
],
"Mail": [
{
"name": "from",
"type": "Person"
},
{
"name": "to",
"type": "Person"
},
{
"name": "contents",
"type": "Person"
}
]
},
"primaryType": "Mail",
"domain": {
"name": "Ether Mail",
"version": "1",
"chainId": 1,
"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
},
"message": {
"from": {
"name": "Cow",
"wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
},
"to": {
"name": "Bob",
"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
},
"contents": "Hello, Bob!"
}
}
`
var malformedTypedData TypedData
err := json.Unmarshal([]byte(jsonTypedData), &malformedTypedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = malformedTypedData.Validate()
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
_, err = malformedTypedData.HashStruct(malformedTypedData.PrimaryType, malformedTypedData.Message)
if err.Error() != "provided data 'Hello, Bob!' doesn't match type 'Person'" {
t.Errorf("Expected `provided data 'Hello, Bob!' doesn't match type 'Person'`, got %v", err)
}
malformedTypedData.Types["Mail"][2]["type"] = "Blahonga"
err = malformedTypedData.Validate()
if err == nil || err.Error() != "referenced type 'Blahonga' is undefined" {
t.Fatalf("Expected `referenced type 'Blahonga' is undefined`, got %v", err)
}
_, err = malformedTypedData.HashStruct(malformedTypedData.PrimaryType, malformedTypedData.Message)
if err == nil || err.Error() != "unrecognized interface type <nil>" {
t.Errorf("Expected `unrecognized interface type <nil>`, got %v", err)
}
}
func TestMalformedData3(t *testing.T) {
// Verifies several quirks
// 1. Using dynamic types and only validating the prefix:
//{
// "name": "chainId",
// "type": "uint256 ... and now for something completely different"
//}
// 2. Extra data in message:
//{
// "blahonga": "zonk bonk"
//}
jsonTypedData := `
{
"types": {
"EIP712Domain": [
@ -472,6 +432,95 @@ func TestMalformedData4(t *testing.T) {
"type": "address"
}
],
"Person": [
{
"name": "name",
"type": "string"
},
{
"name": "wallet",
"type": "address"
}
],
"Mail": [
{
"name": "from",
"type": "Person"
},
{
"name": "to",
"type": "Person"
},
{
"name": "contents",
"type": "string"
}
]
},
"primaryType": "Mail",
"domain": {
"name": "Ether Mail",
"version": "1",
"chainId": 1,
"verifyingContract": "0xCCCcccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
},
"message": {
"from": {
"name": "Cow",
"wallet": "0xcD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
},
"to": {
"name": "Bob",
"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
},
"contents": "Hello, Bob!"
}
}
`
var malformedTypedData TypedData
err := json.Unmarshal([]byte(jsonTypedData), &malformedTypedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = malformedTypedData.Validate()
if err == nil || err.Error() != "unknown atomic type 'uint256 ... and now for something completely different'" {
t.Fatalf("Expected `unknown atomic type 'uint256 ... and now for something completely different'`, got %v", err)
}
malformedTypedData.Types["EIP712Domain"][2]["type"] = "uint256"
malformedTypedData.Message["blahonga"] = "zonk bonk"
_, err = malformedTypedData.HashStruct(malformedTypedData.PrimaryType, malformedTypedData.Message)
if err == nil || err.Error() != "there is extra data provided in the message" {
t.Errorf("Expected `there is extra data provided in the message`, got %v", err)
}
}
func TestMalformedData4(t *testing.T) {
// Verifies data that doesn't fit into it:
//{
// "test": 65536 <-- test defined as uint8
//}
jsonTypedData := `
{
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
},
{
"name": "verifyingContract",
"type": "address"
}
],
"Person": [
{
"name": "name",
@ -503,48 +552,37 @@ func TestMalformedData4(t *testing.T) {
},
"primaryType": "Mail",
"domain": {
"Signed by": "Bill Gates -- this text won't affect the hash'",
"we can": "stuff anything here, really",
"name": "Ether Mail",
"version": "65536",
"version": "1",
"chainId": 1,
"verifyingContract": "0xCCCcccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
},
"message": {
"from": {
"name": "Cow",
"test": 65536,
"wallet": "0xcD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
},
"to": {
"name": "Bob",
"test": 65536,
"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
},
"blahonga": "zonk bonk",
"contents": "åäzö \r\n test, Bob!"
"contents": "Hello, Bob!"
}
}
`
// The struct above contains several quirks
// 1. Using dynamic types and only validating the prefix:
//{
// "name": "chainId",
// "type": "uint256 ... and now for something completely different"
//},
// 2. Using dynamic types, but not verifying that the data fits into it
// "test": 65536, <-- test defined as uint8
// 3a. Extra data in message
// "blahonga": "zonk bonk",
// 3b ... and in domain
// "Signed by": "Bill Gates",
var typedData TypedData
err := json.Unmarshal([]byte(data), &typedData)
var malformedTypedData TypedData
err := json.Unmarshal([]byte(jsonTypedData), &malformedTypedData)
if err != nil {
t.Fatalf("unmarshalling failed %v", err)
}
err = typedData.Validate()
if err.Error() != "unknown atomic type 'uint256 ... and now for something completely different'" {
t.Fatalf("Expected `unknown atomic type 'uint256 ... and now for something completely different'`, got %v", err)
err = malformedTypedData.Validate()
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
_, err = malformedTypedData.HashStruct(malformedTypedData.PrimaryType, malformedTypedData.Message)
if err == nil || err.Error() != "provided data '65536' doesn't match type 'uint8'" {
t.Fatalf("Expected `provided data '65536' doesn't match type 'uint8'`, got %v", err)
}
}