mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-08-20 02:42:27 +00:00
Polished docstrings, ran goimports and swapped fmt.Errorf with errors.New where possible
This commit is contained in:
Paul Berg
parent
190530ea77
commit
99de6ffc4c
3 changed files with 254 additions and 961 deletions
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@ -245,21 +245,15 @@ func TestNewAcc(t *testing.T) {
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}
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}
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func signApplicationValidator(t *testing.T) {
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func signTextValidator(t *testing.T) {
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// TODO
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}
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func signApplicationClique(t *testing.T) {
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// https://etherscan.io/block/1
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//header := &types.Header{
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// "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3",
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// "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
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// "0x05a56e2d52c817161883f50c441c3228cfe54d9f",
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//}
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// TODO
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}
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func signDataPlain(t *testing.T) {
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func signTextPlain(t *testing.T) {
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api, control := setup(t)
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//Create two accounts
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createAccount(control, api, t)
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@ -273,7 +267,7 @@ func signDataPlain(t *testing.T) {
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control <- "Y"
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control <- "wrongpassword"
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h, err := api.SignData(context.Background(), DataPlain.Mime, a, []byte("EHLO world"))
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h, err := api.SignData(context.Background(), TextPlain.Mime, a, []byte("EHLO world"))
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if h != nil {
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t.Errorf("Expected nil-data, got %x", h)
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}
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@ -281,7 +275,7 @@ func signDataPlain(t *testing.T) {
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t.Errorf("Expected ErrLocked! %v", err)
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}
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control <- "No way"
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h, err = api.SignData(context.Background(), DataPlain.Mime, a, []byte("EHLO world"))
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h, err = api.SignData(context.Background(), TextPlain.Mime, a, []byte("EHLO world"))
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if h != nil {
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t.Errorf("Expected nil-data, got %x", h)
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}
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@ -290,7 +284,7 @@ func signDataPlain(t *testing.T) {
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}
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control <- "Y"
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control <- "a_long_password"
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h, err = api.SignData(context.Background(), DataPlain.Mime, a, []byte("EHLO world"))
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h, err = api.SignData(context.Background(), TextPlain.Mime, a, []byte("EHLO world"))
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if err != nil {
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t.Fatal(err)
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}
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@ -299,22 +293,22 @@ func signDataPlain(t *testing.T) {
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}
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}
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func signDataStructured(t *testing.T) {
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func signTypedData(t *testing.T) {
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// TODO
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}
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func TestSignData(t *testing.T) {
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// application/validator or `0x00`
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signApplicationValidator(t)
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signTextValidator(t)
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// application/clique or `0x01`
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// data/structured `0x01`
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signTypedData(t)
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// application/clique or `0x02`
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signApplicationClique(t)
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// data/plain or `0x45`
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signDataPlain(t)
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// data/structured `0x46`
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signDataStructured(t)
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// text/plain or `0x45`
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signTextPlain(t)
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}
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func mkTestTx(from common.MixedcaseAddress) SendTxArgs {
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@ -1,259 +0,0 @@
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package core
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import (
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"bytes"
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"context"
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"encoding/hex"
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"fmt"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/crypto"
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"math/big"
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"sort"
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"strings"
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"unicode"
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)
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type TypedData struct {
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Types EIP712Types `json:"types"`
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PrimaryType string `json:"primaryType"`
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Domain EIP712Domain `json:"domain"`
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Message EIP712Message `json:"message"`
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}
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type EIP712Types map[string][]map[string]string
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type EIP712TypePriority struct {
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Type string
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Value uint
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}
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type EIP712Domain struct {
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Name string `json:"name"`
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Version string `json:"version"`
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ChainId *big.Int `json:"chainId"`
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VerifyingContract common.Address `json:"verifyingContract"`
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Salt hexutil.Bytes `json:"salt"`
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}
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type EIP712Message map[string]interface{}
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// Typed data according to EIP712
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//
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// hash = keccak256("\x19${byteVersion}${domainSeparator}${hashStruct(message)}")
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func (api *SignerAPI) SignTypedData(ctx context.Context, addr common.MixedcaseAddress, data TypedData) (hexutil.Bytes, error) {
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if err := data.Domain.IsValid(); err != nil {
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return nil, err
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}
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if data.PrimaryType == "" {
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return nil, fmt.Errorf("primary type undefined")
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}
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domainTypes := EIP712Types{
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"EIP712Domain": data.Types["EIP712Domain"],
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}
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domainSeparator, err := hashStruct(domainTypes, data.Domain.Values(), "")
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if err != nil {
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return nil, err
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}
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delete(data.Types, "EIP712Domain")
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typedDataHash, err := hashStruct(data.Types, data.Message, data.PrimaryType)
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if err != nil {
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return nil, err
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}
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fmt.Println("domainSeparator", domainSeparator.String())
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fmt.Println("typedDataHash", typedDataHash.String())
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return common.FromHex("0xdeadbeef"), nil
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}
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// `encode(domainSeparator : 𝔹²⁵⁶, message : 𝕊) = "\x19\x01" ‖ domainSeparator ‖ hashStruct(message)`
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func hashStruct(types EIP712Types, message EIP712Message, primaryType string) (common.Hash, error) {
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if primaryType != "" {
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if types[primaryType] == nil {
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return common.Hash{}, fmt.Errorf("primaryType specified but undefined")
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}
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}
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typeEncoding, err := encodeType(types, primaryType)
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if err != nil {
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return common.Hash{}, err
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}
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typeHash := hex.EncodeToString(crypto.Keccak256([]byte(typeEncoding)))
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dataEncoding, err := encodeData(message)
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if err != nil {
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return common.Hash{}, err
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}
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dataHash := hex.EncodeToString(crypto.Keccak256([]byte(dataEncoding)))
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var buffer bytes.Buffer
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buffer.WriteString(typeHash)
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buffer.WriteString(dataHash)
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hash := common.BytesToHash(crypto.Keccak256(buffer.Bytes()))
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return hash, nil
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}
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// encodeType transforms the given types into an encoding of the form
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// `name ‖ "(" ‖ member₁ ‖ "," ‖ member₂ ‖ "," ‖ … ‖ memberₙ ")"`
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//
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// Each member is written as `type ‖ " " ‖ name` encodings cascade down and are sorted by name
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func encodeType(types EIP712Types, primaryType string) (string, error) {
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var priorities = make(map[string]uint)
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for key := range types {
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priorities[key] = 0
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}
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// Updates the priority for every new custom type discovered
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update := func(typeKey string, typeVal string) {
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priorities[typeVal]++
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// Importantly, we also have to check for parent types to increment them too
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for _, typeObj := range types[typeVal] {
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_typeVal := typeObj["type"]
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firstChar := []rune(_typeVal)[0]
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if unicode.IsUpper(firstChar) {
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priorities[_typeVal]++
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}
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}
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}
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// Checks if referenced type has already been visited to optimise algo
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visited := func(arr []string, val string) bool {
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for _, elem := range arr {
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if elem == val {
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return true
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}
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}
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return false
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}
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for typeKey, typeArr := range types {
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var typeValArr []string
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for _, typeObj := range typeArr {
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typeVal := typeObj["type"]
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if typeKey == typeVal {
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return "", fmt.Errorf("type %s cannot reference itself", typeVal)
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}
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firstChar := []rune(typeVal)[0]
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if unicode.IsUpper(firstChar) {
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if types[typeVal] != nil {
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if !visited(typeValArr, typeVal) {
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typeValArr = append(typeValArr, typeVal)
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update(typeKey, typeVal)
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}
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} else {
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return "", fmt.Errorf("referenced type %s is undefined", typeVal)
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}
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} else {
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if !types.IsStandardType(typeVal) {
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if types[typeVal] != nil {
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return "", fmt.Errorf("Custom type %s must be capitalized", typeVal)
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} else {
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return "", fmt.Errorf("Unknown type %s", typeVal)
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}
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}
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}
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}
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typeValArr = []string{}
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}
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sortedPriorities := types.SortByPriorityAndName(priorities)
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var buffer bytes.Buffer
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for _, priority := range sortedPriorities {
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typeKey := priority.Type
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typeArr := types[typeKey]
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buffer.WriteString(typeKey)
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buffer.WriteString("(")
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for _, typeObj := range typeArr {
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buffer.WriteString(typeObj["type"])
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buffer.WriteString(" ")
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buffer.WriteString(typeObj["name"])
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buffer.WriteString(",")
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}
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buffer.Truncate(buffer.Len() - 1)
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buffer.WriteString(")")
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}
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return buffer.String(), nil
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}
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func encodeData(values EIP712Message) (string, error) {
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return "", nil
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}
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// Checks if the given type is a standard type accepted by EIP-712
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func (types *EIP712Types) IsStandardType(typeStr string) bool {
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standardTypes := []string{
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"array",
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"address",
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"boolean",
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"bytes",
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"string",
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"struct",
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"uint",
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}
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for _, val := range standardTypes {
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if strings.HasPrefix(typeStr, val) {
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return true
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}
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}
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return false
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}
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// Helper function to sort types by priority and name. Priority is calculated b
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// based upon the number of references.
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func (types *EIP712Types) SortByPriorityAndName(input map[string]uint) []EIP712TypePriority {
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var priorities []EIP712TypePriority
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for key, val := range input {
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priorities = append(priorities, EIP712TypePriority{key, val})
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}
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// Alphabetically
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sort.Slice(priorities, func(i, j int) bool {
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return priorities[i].Type < priorities[j].Type
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})
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// Priority
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sort.Slice(priorities, func(i, j int) bool {
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return priorities[i].Value > priorities[j].Value
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})
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for _, priority := range priorities {
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fmt.Printf("%s, Value %d\n", priority.Type, priority.Value)
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}
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fmt.Printf("\n")
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return priorities
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}
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// Check if the given domain is valid, i.e. contains at least the minimum viable keys and values
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func (domain *EIP712Domain) IsValid() error {
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if domain.ChainId == big.NewInt(0) {
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return fmt.Errorf("chainId must be specified according to EIP-155")
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}
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if domain.Name == "" && domain.Version == "" && len(domain.VerifyingContract) == 0 && len(domain.Salt) == 0 {
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return fmt.Errorf("domain undefined")
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}
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return nil
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}
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// Helper function to return the values of a domain in the form of a golang map
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func (domain *EIP712Domain) Values() map[string]interface{} {
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return map[string]interface{}{
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"name": domain.Name,
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"version": domain.Version,
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"chainId": domain.Name,
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"verifyingContract": domain.VerifyingContract,
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"salt": domain.Salt,
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}
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}
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@ -1,760 +1,318 @@
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// Copyright 2018 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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//
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package core
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import (
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"bytes"
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"context"
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"encoding/hex"
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"errors"
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"fmt"
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"math/big"
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"mime"
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"math/rand"
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"reflect"
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"regexp"
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"sort"
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"strconv"
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"strings"
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"time"
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"unicode"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/PaulRBerg/basics/helpers"
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"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/crypto/sha3"
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"github.com/ethereum/go-ethereum/rlp"
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)
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type SigFormat struct {
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Mime string
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ByteVersion byte
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}
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var (
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TextValidator = SigFormat{
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"text/validator",
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0x00,
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}
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DataTyped = SigFormat{
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"data/typed",
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0x01,
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}
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ApplicationClique = SigFormat{
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"application/clique",
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0x02,
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}
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TextPlain = SigFormat{
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"text/plain",
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0x45,
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}
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)
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type ValidatorData struct {
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Address common.Address
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Message hexutil.Bytes
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}
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type TypedData struct {
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Types Types `json:"types"`
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Types map[string]EIP712Type `json:"types"`
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PrimaryType string `json:"primaryType"`
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Domain TypedDataDomain `json:"domain"`
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Message TypedDataMessage `json:"message"`
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Domain EIP712Domain `json:"domain"`
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Message EIP712Message `json:"message"`
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}
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|
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type Type []map[string]string
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type EIP712Type []map[string]string
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|
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type Types map[string]Type
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|
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type TypePriority struct {
|
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type EIP712TypePriority struct {
|
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Type string
|
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Value uint
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}
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|
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type TypedDataMessage = map[string]interface{}
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type EIP712Data = map[string]interface{}
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|
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type TypedDataDomain struct {
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type EIP712Domain struct {
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Name string `json:"name"`
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Version string `json:"version"`
|
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ChainId *big.Int `json:"chainId"`
|
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VerifyingContract string `json:"verifyingContract"`
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Salt string `json:"salt"`
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VerifyingContract common.Address `json:"verifyingContract"`
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Salt hexutil.Bytes `json:"salt"`
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}
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|
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var typedDataRegexp = regexp.MustCompile(`^((address|bool|bytes|string)|((bytes)([1-9]|[1-2][0-9]|3[0-2]))|((int|uint)(8|16|32|64|128|256)))(\[])?$`)
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type EIP712Message map[string]interface{}
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// Sign receives a request and produces a signature
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// Note, the produced signature conforms to the secp256k1 curve R, S and V values,
|
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// where the V value will be 27 or 28 for legacy reasons.
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func (api *SignerAPI) Sign(ctx context.Context, addr common.MixedcaseAddress, req *SignDataRequest) (hexutil.Bytes, error) {
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req.Address = addr
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req.Meta = MetadataFromContext(ctx)
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// We make the request prior to looking up if we actually have the account, to prevent
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// account-enumeration via the API
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res, err := api.UI.ApproveSignData(req)
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if err != nil {
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return nil, err
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}
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if !res.Approved {
|
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return nil, ErrRequestDenied
|
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}
|
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// Look up the wallet containing the requested signer
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account := accounts.Account{Address: addr.Address()}
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wallet, err := api.am.Find(account)
|
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if err != nil {
|
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return nil, err
|
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}
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// Sign the data with the wallet
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signature, err := wallet.SignHashWithPassphrase(account, res.Password, req.Hash)
|
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if err != nil {
|
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return nil, err
|
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}
|
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signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
|
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return signature, nil
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}
|
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|
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// SignData signs the hash of the provided data, but does so differently
|
||||
// depending on the content-type specified.
|
||||
//
|
||||
// Different types of validation occur.
|
||||
func (api *SignerAPI) SignData(ctx context.Context, contentType string, addr common.MixedcaseAddress, data interface{}) (hexutil.Bytes, error) {
|
||||
var req, err = api.determineSignatureFormat(contentType, addr, data)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
signature, err := api.Sign(ctx, addr, req)
|
||||
if err != nil {
|
||||
api.UI.ShowError(err.Error())
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return signature, nil
|
||||
}
|
||||
|
||||
// Determines which signature method should be used based upon the mime type
|
||||
// In the cases where it matters ensure that the charset is handled. The charset
|
||||
// resides in the 'params' returned as the second returnvalue from mime.ParseMediaType
|
||||
// charset, ok := params["charset"]
|
||||
// As it is now, we accept any charset and just treat it as 'raw'.
|
||||
func (api *SignerAPI) determineSignatureFormat(contentType string, addr common.MixedcaseAddress, data interface{}) (*SignDataRequest, error) {
|
||||
var req *SignDataRequest
|
||||
mediaType, _, err := mime.ParseMediaType(contentType)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
switch mediaType {
|
||||
case TextValidator.Mime:
|
||||
// Data with an intended validator
|
||||
validatorData, err := UnmarshalValidatorData(data)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sighash, msg := SignTextValidator(validatorData)
|
||||
req = &SignDataRequest{ContentType: mediaType, Rawdata: validatorData, Message: msg, Hash: sighash}
|
||||
case ApplicationClique.Mime:
|
||||
// Clique is the Ethereum PoA standard
|
||||
cliqueData, err := hexutil.Decode(data.(string))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
header := &types.Header{}
|
||||
if err := rlp.DecodeBytes(cliqueData, header); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sighash, err := SignCliqueHeader(header)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
msg := fmt.Sprintf("clique block %d [0x%x]", header.Number, header.Hash())
|
||||
req = &SignDataRequest{ContentType: mediaType, Rawdata: cliqueData, Message: msg, Hash: sighash}
|
||||
case TextPlain.Mime:
|
||||
// Calculates an Ethereum ECDSA signature for:
|
||||
// hash = keccak256("\x19${byteVersion}Ethereum Signed Message:\n${message length}${message}")
|
||||
plainData, err := hexutil.Decode(data.(string))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sighash, msg := SignTextPlain(plainData)
|
||||
req = &SignDataRequest{ContentType: mediaType, Rawdata: plainData, Message: msg, Hash: sighash}
|
||||
default:
|
||||
return nil, fmt.Errorf("content type '%s' not implemented for signing", contentType)
|
||||
}
|
||||
return req, nil
|
||||
|
||||
}
|
||||
|
||||
// SignTextWithValidator signs the given message which can be further recovered
|
||||
// with the given validator.
|
||||
// hash = keccak256("\x19\x00"${address}${data}).
|
||||
func SignTextValidator(validatorData ValidatorData) (hexutil.Bytes, string) {
|
||||
msg := fmt.Sprintf("\x19\x00%s%s", string(validatorData.Address.Bytes()), string(validatorData.Message))
|
||||
fmt.Printf("SignTextValidator:%s\n", msg)
|
||||
return crypto.Keccak256([]byte(msg)), msg
|
||||
}
|
||||
|
||||
// SignCliqueHeader returns the hash which is used as input for the proof-of-authority
|
||||
// signing. It is the hash of the entire header apart from the 65 byte signature
|
||||
// contained at the end of the extra data.
|
||||
//
|
||||
// The method requires the extra data to be at least 65 bytes -- the original implementation
|
||||
// in clique.go panics if this is the case, thus it's been reimplemented here to avoid the panic
|
||||
// and simply return an error instead
|
||||
func SignCliqueHeader(header *types.Header) (hexutil.Bytes, error) {
|
||||
hash := common.Hash{}
|
||||
if len(header.Extra) < 65 {
|
||||
return hash.Bytes(), fmt.Errorf("clique header extradata too short, %d < 65", len(header.Extra))
|
||||
}
|
||||
hasher := sha3.NewKeccak256()
|
||||
rlp.Encode(hasher, []interface{}{
|
||||
header.ParentHash,
|
||||
header.UncleHash,
|
||||
header.Coinbase,
|
||||
header.Root,
|
||||
header.TxHash,
|
||||
header.ReceiptHash,
|
||||
header.Bloom,
|
||||
header.Difficulty,
|
||||
header.Number,
|
||||
header.GasLimit,
|
||||
header.GasUsed,
|
||||
header.Time,
|
||||
header.Extra[:len(header.Extra)-65],
|
||||
header.MixDigest,
|
||||
header.Nonce,
|
||||
})
|
||||
hasher.Sum(hash[:0])
|
||||
return hash.Bytes(), nil
|
||||
}
|
||||
|
||||
// SignTextPlain is a helper function that calculates a hash for the given message that can be
|
||||
// safely used to calculate a signature from. This gives context to the signed message and prevents
|
||||
// signing of transactions.
|
||||
// hash = keccak256("\x19$Ethereum Signed Message:\n"${message length}${message}).
|
||||
func SignTextPlain(data hexutil.Bytes) (hexutil.Bytes, string) {
|
||||
// The letter `E` is \x45 in hex, retrofitting
|
||||
// https://github.com/ethereum/go-ethereum/pull/2940/commits
|
||||
msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), string(data))
|
||||
return crypto.Keccak256([]byte(msg)), msg
|
||||
}
|
||||
|
||||
// SignTypedData signs EIP-712 conformant typed data
|
||||
// SignTypedData signs EIP712 conformant typed data
|
||||
// hash = keccak256("\x19${byteVersion}${domainSeparator}${hashStruct(message)}")
|
||||
func (api *SignerAPI) SignTypedData(ctx context.Context, addr common.MixedcaseAddress, typedData TypedData) (hexutil.Bytes, error) {
|
||||
if err := typedData.Validate(); err != nil {
|
||||
func (api *SignerAPI) SignTypedData(ctx context.Context, addr common.MixedcaseAddress, data TypedData) (hexutil.Bytes, error) {
|
||||
if err := data.Domain.IsValid(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
domainSeparator, err := typedData.HashStruct("EIP712Domain", typedData.Domain.Map())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
if data.PrimaryType == "" {
|
||||
return nil, errors.New("primary type undefined")
|
||||
}
|
||||
typedDataHash, err := typedData.HashStruct(typedData.PrimaryType, typedData.Message)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
|
||||
domainTypes := map[string]EIP712Type{
|
||||
"EIP712Domain": data.Types["EIP712Domain"],
|
||||
}
|
||||
sighash := crypto.Keccak256([]byte(fmt.Sprintf("\x19\x01%s%s", string(domainSeparator), string(typedDataHash))))
|
||||
output := typedData.PrettyPrint()
|
||||
req := &SignDataRequest{ContentType: DataTyped.Mime, Rawdata: typedData.Map(), Message: output, Hash: sighash}
|
||||
signature, err := api.Sign(ctx, addr, req)
|
||||
if err != nil {
|
||||
api.UI.ShowError(err.Error())
|
||||
return nil, err
|
||||
}
|
||||
return signature, nil
|
||||
domainSeparator := hashStruct(domainTypes, data.PrimaryType, data.Domain.Values(), 0)
|
||||
//if err != nil {
|
||||
// return nil, err
|
||||
//}
|
||||
delete(data.Types, "EIP712Domain")
|
||||
typedDataHash := hashStruct(data.Types, data.PrimaryType, data.Message, 0)
|
||||
//if err != nil {
|
||||
// return nil, err
|
||||
//}
|
||||
|
||||
fmt.Println("domainSeparator", domainSeparator.String())
|
||||
fmt.Println("typedDataHash", typedDataHash.String())
|
||||
return common.FromHex("0xdeadbeef"), nil
|
||||
}
|
||||
|
||||
// HashStruct generates a keccak256 hash of the encoding of the provided data
|
||||
func (typedData *TypedData) HashStruct(primaryType string, data TypedDataMessage) (hexutil.Bytes, error) {
|
||||
encodedData, err := typedData.EncodeData(primaryType, data, 1)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
// hashStruct generates the following encoding for the given domain and message:
|
||||
// `encode(domainSeparator : 𝔹²⁵⁶, message : 𝕊) = "\x19\x01" ‖ domainSeparator ‖ hashStruct(message)`
|
||||
func hashStruct(types map[string]EIP712Type, key string, data EIP712Data, depth int) common.Hash {
|
||||
helpers.PrintJson("hashStruct", map[string]interface{}{
|
||||
"depth": depth,
|
||||
})
|
||||
|
||||
typeEncoding := encodeType(types)
|
||||
typeHash := hex.EncodeToString(crypto.Keccak256([]byte(typeEncoding)))
|
||||
|
||||
dataEncoding := encodeData(types, key, data, depth)
|
||||
dataHash := hex.EncodeToString(crypto.Keccak256([]byte(dataEncoding)))
|
||||
|
||||
var buffer bytes.Buffer
|
||||
buffer.WriteString(typeHash)
|
||||
buffer.WriteString(dataHash)
|
||||
hash := common.BytesToHash(crypto.Keccak256(buffer.Bytes()))
|
||||
|
||||
if depth == 0 {
|
||||
fmt.Printf("typeEncoding %s\n", typeEncoding)
|
||||
fmt.Printf("dataEncoding %s\n", dataEncoding)
|
||||
}
|
||||
return crypto.Keccak256(encodedData), nil
|
||||
return hash
|
||||
}
|
||||
|
||||
// Dependencies returns an array of custom types ordered by their hierarchical reference tree
|
||||
func (typedData *TypedData) Dependencies(primaryType string, found []string) []string {
|
||||
includes := func(arr []string, str string) bool {
|
||||
for _, obj := range arr {
|
||||
if obj == str {
|
||||
// encodeType generates the followign encoding:
|
||||
// `name ‖ "(" ‖ member₁ ‖ "," ‖ member₂ ‖ "," ‖ … ‖ memberₙ ")"`
|
||||
//
|
||||
// each member is written as `type ‖ " " ‖ name` encodings cascade down and are sorted by name
|
||||
func encodeType(types map[string]EIP712Type) string {
|
||||
helpers.PrintJson("hashStruct", map[string]interface{}{
|
||||
"types": types,
|
||||
})
|
||||
|
||||
var priorities = make(map[string]uint)
|
||||
for key := range types {
|
||||
priorities[key] = 0
|
||||
}
|
||||
|
||||
// Updates the priority for every new custom type discovered
|
||||
update := func(typeKey string, typeVal string) {
|
||||
priorities[typeVal]++
|
||||
|
||||
// Importantly, we also have to check for parent types to increment them too
|
||||
for _, typeObj := range types[typeVal] {
|
||||
_typeVal := typeObj["type"]
|
||||
|
||||
firstChar := []rune(_typeVal)[0]
|
||||
if unicode.IsUpper(firstChar) {
|
||||
priorities[_typeVal]++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Checks if referenced type has already been visited to optimise algo
|
||||
visited := func(arr []string, val string) bool {
|
||||
for _, elem := range arr {
|
||||
if elem == val {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
if includes(found, primaryType) {
|
||||
return found
|
||||
}
|
||||
if typedData.Types[primaryType] == nil {
|
||||
return found
|
||||
}
|
||||
found = append(found, primaryType)
|
||||
for _, field := range typedData.Types[primaryType] {
|
||||
for _, dep := range typedData.Dependencies(field["type"], found) {
|
||||
if !includes(found, dep) {
|
||||
found = append(found, dep)
|
||||
}
|
||||
}
|
||||
}
|
||||
return found
|
||||
}
|
||||
for typeKey, typeArr := range types {
|
||||
var typeValArr []string
|
||||
|
||||
// EncodeType generates the following encoding:
|
||||
// `name ‖ "(" ‖ member₁ ‖ "," ‖ member₂ ‖ "," ‖ … ‖ memberₙ ")"`
|
||||
//
|
||||
// each member is written as `type ‖ " " ‖ name` encodings cascade down and are sorted by name
|
||||
func (typedData *TypedData) EncodeType(primaryType string) hexutil.Bytes {
|
||||
// Get dependencies primary first, then alphabetical
|
||||
deps := typedData.Dependencies(primaryType, []string{})
|
||||
slicedDeps := deps[1:]
|
||||
sort.Strings(slicedDeps)
|
||||
deps = append([]string{primaryType}, slicedDeps...)
|
||||
|
||||
// Format as a string with fields
|
||||
var buffer bytes.Buffer
|
||||
for _, dep := range deps {
|
||||
buffer.WriteString(dep)
|
||||
buffer.WriteString("(")
|
||||
for _, obj := range typedData.Types[dep] {
|
||||
buffer.WriteString(obj["type"])
|
||||
buffer.WriteString(" ")
|
||||
buffer.WriteString(obj["name"])
|
||||
buffer.WriteString(",")
|
||||
}
|
||||
buffer.Truncate(buffer.Len() - 1)
|
||||
buffer.WriteString(")")
|
||||
}
|
||||
return buffer.Bytes()
|
||||
}
|
||||
|
||||
func (typedData *TypedData) TypeHash(primaryType string) hexutil.Bytes {
|
||||
return crypto.Keccak256(typedData.EncodeType(primaryType))
|
||||
}
|
||||
|
||||
// EncodeData generates the following encoding:
|
||||
// `enc(value₁) ‖ enc(value₂) ‖ … ‖ enc(valueₙ)`
|
||||
//
|
||||
// each encoded member is 32-byte long
|
||||
func (typedData *TypedData) EncodeData(primaryType string, data map[string]interface{}, depth int) (hexutil.Bytes, error) {
|
||||
buffer := bytes.Buffer{}
|
||||
|
||||
// Verify extra data
|
||||
if len(typedData.Types[primaryType]) < len(data) {
|
||||
return nil, errors.New("there is extra data provided in the message")
|
||||
}
|
||||
|
||||
// Add typehash
|
||||
buffer.Write(typedData.TypeHash(primaryType))
|
||||
|
||||
// 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:] == "]" {
|
||||
arrayValue, ok := encValue.([]interface{})
|
||||
if !ok {
|
||||
return nil, dataMismatchError(encType, encValue)
|
||||
}
|
||||
|
||||
arrayBuffer := bytes.Buffer{}
|
||||
parsedType := strings.Split(encType, "[")[0]
|
||||
for _, item := range arrayValue {
|
||||
if typedData.Types[parsedType] != nil {
|
||||
mapValue, ok := item.(map[string]interface{})
|
||||
if !ok {
|
||||
return nil, dataMismatchError(parsedType, item)
|
||||
}
|
||||
encodedData, err := typedData.EncodeData(parsedType, mapValue, depth+1)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
arrayBuffer.Write(encodedData)
|
||||
} else {
|
||||
encValue, err := typedData.EncodePrimitiveValue(encType, encValue, depth)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
bytesValue, err := bytesValueOf(encValue)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
arrayBuffer.Write(bytesValue)
|
||||
}
|
||||
}
|
||||
|
||||
buffer.Write(crypto.Keccak256(arrayBuffer.Bytes()))
|
||||
} else if typedData.Types[field["type"]] != nil {
|
||||
mapValue, ok := encValue.(map[string]interface{})
|
||||
if !ok {
|
||||
return nil, dataMismatchError(encType, encValue)
|
||||
}
|
||||
|
||||
encodedData, err := typedData.EncodeData(field["type"], mapValue, depth+1)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
buffer.Write(crypto.Keccak256(encodedData))
|
||||
} else {
|
||||
primitiveEncValue, err := typedData.EncodePrimitiveValue(encType, encValue, depth)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
bytesValue, err := bytesValueOf(primitiveEncValue)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
buffer.Write(bytesValue)
|
||||
}
|
||||
}
|
||||
|
||||
return buffer.Bytes(), nil
|
||||
}
|
||||
|
||||
// EncodePrimitiveValue deals with the primitive values found
|
||||
// while searching through the typed data
|
||||
func (typedData *TypedData) EncodePrimitiveValue(encType string, encValue interface{}, depth int) (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)
|
||||
}
|
||||
addressValue := common.HexToAddress(stringValue)
|
||||
for _, _byte := range addressValue {
|
||||
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)
|
||||
} else {
|
||||
return nil, fmt.Errorf("unrecognized type '%s'", encType)
|
||||
}
|
||||
}
|
||||
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 {
|
||||
return bytesValue, nil
|
||||
}
|
||||
|
||||
switch reflect.TypeOf(_interface) {
|
||||
case reflect.TypeOf(hexutil.Bytes{}):
|
||||
return _interface.(hexutil.Bytes), nil
|
||||
case reflect.TypeOf([]byte{}):
|
||||
return hexutil.Bytes(_interface.([]byte)), nil
|
||||
case reflect.TypeOf([]uint8{}):
|
||||
return _interface.([]uint8), nil
|
||||
case reflect.TypeOf(string("")):
|
||||
return hexutil.Bytes(_interface.(string)), nil
|
||||
default:
|
||||
break
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("unrecognized type '%T'", _interface)
|
||||
}
|
||||
|
||||
// EcRecover recovers the address associated with the given sig.
|
||||
// Only compatible with `text/plain`
|
||||
func (api *SignerAPI) EcRecover(ctx context.Context, data hexutil.Bytes, sig hexutil.Bytes) (common.Address, error) {
|
||||
// Returns the address for the Account that was used to create the signature.
|
||||
//
|
||||
// Note, this function is compatible with eth_sign and personal_sign. As such it recovers
|
||||
// the address of:
|
||||
// hash = keccak256("\x19${byteVersion}Ethereum Signed Message:\n${message length}${message}")
|
||||
// addr = ecrecover(hash, signature)
|
||||
//
|
||||
// Note, the signature must conform to the secp256k1 curve R, S and V values, where
|
||||
// the V value must be be 27 or 28 for legacy reasons.
|
||||
//
|
||||
// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecover
|
||||
if len(sig) != 65 {
|
||||
return common.Address{}, fmt.Errorf("signature must be 65 bytes long")
|
||||
}
|
||||
if sig[64] != 27 && sig[64] != 28 {
|
||||
return common.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)")
|
||||
}
|
||||
sig[64] -= 27 // Transform yellow paper V from 27/28 to 0/1
|
||||
hash, _ := SignTextPlain(data)
|
||||
rpk, err := crypto.SigToPub(hash, sig)
|
||||
if err != nil {
|
||||
return common.Address{}, err
|
||||
}
|
||||
return crypto.PubkeyToAddress(*rpk), nil
|
||||
}
|
||||
|
||||
// UnmarshalValidatorData converts the bytes input to typed data
|
||||
func UnmarshalValidatorData(data interface{}) (ValidatorData, error) {
|
||||
raw := data.(map[string]interface{})
|
||||
|
||||
addr, ok := raw["address"].(string)
|
||||
if !ok {
|
||||
return ValidatorData{}, errors.New("validator address is not sent as a string")
|
||||
}
|
||||
addrBytes, err := hexutil.Decode(addr)
|
||||
if err != nil {
|
||||
return ValidatorData{}, err
|
||||
}
|
||||
if !ok || len(addrBytes) == 0 {
|
||||
return ValidatorData{}, errors.New("validator address is undefined")
|
||||
}
|
||||
|
||||
message, ok := raw["message"].(string)
|
||||
if !ok {
|
||||
return ValidatorData{}, errors.New("message is not sent as a string")
|
||||
}
|
||||
messageBytes, err := hexutil.Decode(message)
|
||||
if err != nil {
|
||||
return ValidatorData{}, err
|
||||
}
|
||||
if !ok || len(messageBytes) == 0 {
|
||||
return ValidatorData{}, errors.New("message is undefined")
|
||||
}
|
||||
|
||||
return ValidatorData{
|
||||
Address: common.BytesToAddress(addrBytes),
|
||||
Message: messageBytes,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Validate make sure the types are sound
|
||||
func (typedData *TypedData) Validate() error {
|
||||
if err := typedData.Types.Validate(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := typedData.Domain.Validate(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Map generates a map version of the typed data
|
||||
func (typedData *TypedData) Map() map[string]interface{} {
|
||||
dataMap := map[string]interface{}{
|
||||
"types": typedData.Types,
|
||||
"domain": typedData.Domain.Map(),
|
||||
"primaryType": typedData.PrimaryType,
|
||||
"message": typedData.Message,
|
||||
}
|
||||
return dataMap
|
||||
}
|
||||
|
||||
// PrettyPrint generates a nice output to help the users
|
||||
// of clef present data in their apps
|
||||
func (typedData *TypedData) PrettyPrint() string {
|
||||
output := bytes.Buffer{}
|
||||
|
||||
output.WriteString(fmt.Sprintf("%s {\n", "Domain"))
|
||||
output.WriteString(typedData.PrettyPrintData("EIP712Domain", typedData.Domain.Map(), 1))
|
||||
output.Truncate(output.Len() - 2)
|
||||
output.WriteString(fmt.Sprintf("\n}\n"))
|
||||
|
||||
output.WriteString(fmt.Sprintf("%s {\n", typedData.PrimaryType))
|
||||
output.WriteString(typedData.PrettyPrintData(typedData.PrimaryType, typedData.Message, 1))
|
||||
output.Truncate(output.Len() - 2)
|
||||
output.WriteString(fmt.Sprintf("\n}"))
|
||||
|
||||
return output.String()
|
||||
}
|
||||
|
||||
// PrettyPrintData generates a formatted output for the
|
||||
// given data
|
||||
func (typedData *TypedData) PrettyPrintData(primaryType string, data map[string]interface{}, depth int) string {
|
||||
output := bytes.Buffer{}
|
||||
|
||||
// Add field contents. Structs and arrays have special handlers.
|
||||
for _, field := range typedData.Types[primaryType] {
|
||||
encType := field["type"]
|
||||
encName := field["name"]
|
||||
encValue := data[encName]
|
||||
|
||||
if encType[len(encType)-1:] == "]" {
|
||||
arrayValue, _ := encValue.([]interface{})
|
||||
parsedType := strings.Split(encType, "[")[0]
|
||||
for _, item := range arrayValue {
|
||||
if typedData.Types[parsedType] != nil {
|
||||
mapValue, _ := item.(map[string]interface{})
|
||||
mapOutput := typedData.PrettyPrintData(parsedType, mapValue, depth+1)
|
||||
output.WriteString(mapOutput)
|
||||
} else {
|
||||
primitiveOutput := typedData.PrettyPrintPrimitiveValue(encType, encName, encValue, depth)
|
||||
output.WriteString(primitiveOutput)
|
||||
}
|
||||
}
|
||||
} else if typedData.Types[field["type"]] != nil {
|
||||
output.WriteString(strings.Repeat("\u00a0", depth*2))
|
||||
output.WriteString(fmt.Sprintf("\"%s\": { %s\n", field["name"], encType))
|
||||
|
||||
mapValue, _ := encValue.(map[string]interface{})
|
||||
mapOutput := typedData.PrettyPrintData(field["type"], mapValue, depth+1)
|
||||
output.WriteString(mapOutput)
|
||||
|
||||
output.Truncate(output.Len() - 2)
|
||||
output.WriteString(fmt.Sprintf("\n%s},\n", strings.Repeat("\u00a0", depth*2)))
|
||||
} else {
|
||||
primitiveOutput := typedData.PrettyPrintPrimitiveValue(encType, encName, encValue, depth)
|
||||
output.WriteString(primitiveOutput)
|
||||
}
|
||||
}
|
||||
|
||||
return output.String()
|
||||
}
|
||||
|
||||
// PrettyPrintPrimitiveValue generates a formatted output for the
|
||||
// given primitive value
|
||||
func (typedData *TypedData) PrettyPrintPrimitiveValue(encType string, encName string, encValue interface{}, depth int) string {
|
||||
output := bytes.Buffer{}
|
||||
output.WriteString(strings.Repeat("\u00a0", depth*2))
|
||||
output.WriteString(fmt.Sprintf("\"%s\": ", encName))
|
||||
|
||||
switch encType {
|
||||
case "address":
|
||||
stringValue, _ := encValue.(string)
|
||||
addressValue := common.HexToAddress(stringValue)
|
||||
output.WriteString(fmt.Sprintf("%s,\n", addressValue.String()))
|
||||
case "bool":
|
||||
boolValue, _ := encValue.(bool)
|
||||
output.WriteString(fmt.Sprintf("%t,\n", boolValue))
|
||||
case "bytes", "string":
|
||||
output.WriteString(fmt.Sprintf("\"%s\",\n", encValue))
|
||||
default:
|
||||
if strings.HasPrefix(encType, "bytes") {
|
||||
output.WriteString(fmt.Sprintf("\"%s\",\n", encValue))
|
||||
} else if strings.HasPrefix(encType, "uint") || strings.HasPrefix(encType, "int") {
|
||||
bigIntValue, _ := encValue.(*big.Int)
|
||||
output.WriteString(fmt.Sprintf("%d,\n", bigIntValue))
|
||||
}
|
||||
}
|
||||
return output.String()
|
||||
}
|
||||
|
||||
// Validate checks if the types object is conformant to the specs
|
||||
func (types *Types) Validate() error {
|
||||
for typeKey, typeArr := range *types {
|
||||
for _, typeObj := range typeArr {
|
||||
typeVal := typeObj["type"]
|
||||
if typeKey == typeVal {
|
||||
return fmt.Errorf("type '%s' cannot reference itself", typeVal)
|
||||
panic(fmt.Errorf("type %s cannot reference itself", typeVal))
|
||||
}
|
||||
|
||||
firstChar := []rune(typeVal)[0]
|
||||
if unicode.IsUpper(firstChar) {
|
||||
if (*types)[typeVal] == nil {
|
||||
return fmt.Errorf("referenced type '%s' is undefined", typeVal)
|
||||
if types[typeVal] != nil {
|
||||
if !visited(typeValArr, typeVal) {
|
||||
typeValArr = append(typeValArr, typeVal)
|
||||
update(typeKey, typeVal)
|
||||
}
|
||||
} else {
|
||||
if !typedDataRegexp.MatchString(typeVal) {
|
||||
if (*types)[typeVal] != nil {
|
||||
return fmt.Errorf("referenced type '%s' must be capitalized", typeVal)
|
||||
panic(fmt.Errorf("referenced type %s is undefined", typeVal))
|
||||
}
|
||||
} else {
|
||||
return fmt.Errorf("unknown atomic type '%s'", typeVal)
|
||||
if !isStandardType(typeVal) {
|
||||
if types[typeVal] != nil {
|
||||
panic(fmt.Errorf("Custom type %s must be capitalized", typeVal))
|
||||
} else {
|
||||
panic(fmt.Errorf("Unknown type %s", typeVal))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
typeValArr = []string{}
|
||||
}
|
||||
return nil
|
||||
|
||||
sortedPriorities := sortByPriorityAndName(priorities)
|
||||
var buffer bytes.Buffer
|
||||
for _, priority := range sortedPriorities {
|
||||
typeKey := priority.Type
|
||||
typeArr := types[typeKey]
|
||||
|
||||
buffer.WriteString(typeKey)
|
||||
buffer.WriteString("(")
|
||||
|
||||
for _, typeObj := range typeArr {
|
||||
buffer.WriteString(typeObj["type"])
|
||||
buffer.WriteString(" ")
|
||||
buffer.WriteString(typeObj["name"])
|
||||
buffer.WriteString(",")
|
||||
}
|
||||
|
||||
buffer.Truncate(buffer.Len() - 1)
|
||||
buffer.WriteString(")")
|
||||
}
|
||||
|
||||
return buffer.String()
|
||||
}
|
||||
|
||||
// Validate checks if the given domain is valid, i.e. contains at least
|
||||
// encodeData generates the following encoding:
|
||||
// `enc(value₁) ‖ enc(value₂) ‖ … ‖ enc(valueₙ)`
|
||||
//
|
||||
// each encoded member is 32-byte long
|
||||
func encodeData(types map[string]EIP712Type, key string, val interface{}, depth int) string {
|
||||
helpers.PrintJson("hashStruct", map[string]interface{}{
|
||||
"key": key,
|
||||
"val": val,
|
||||
"depth": depth,
|
||||
})
|
||||
|
||||
var buffer bytes.Buffer
|
||||
|
||||
switch val.(type) {
|
||||
case EIP712Data:
|
||||
for mapKey, mapVal := range val.(EIP712Data) {
|
||||
if reflect.TypeOf(mapVal) == reflect.TypeOf(EIP712Data{}) {
|
||||
hash := hashStruct(types, mapKey, mapVal.(EIP712Data), depth+1)
|
||||
buffer.WriteString(hash.String())
|
||||
} else {
|
||||
str := encodeData(types, mapKey, mapVal, depth+1)
|
||||
buffer.WriteString(str)
|
||||
}
|
||||
}
|
||||
break
|
||||
|
||||
case bool:
|
||||
boolVal, _ := val.(bool)
|
||||
var int64Val int64
|
||||
if boolVal {
|
||||
int64Val = 1
|
||||
}
|
||||
encodedVal := abi.U256(big.NewInt(int64Val))
|
||||
fmt.Printf("bool encoded value:", encodedVal)
|
||||
buffer.Write(encodedVal)
|
||||
break
|
||||
|
||||
case string:
|
||||
bytesVal := common.FromHex(val.(string))
|
||||
hash := common.BytesToHash(crypto.Keccak256(bytesVal))
|
||||
buffer.WriteString(hash.String())
|
||||
break
|
||||
|
||||
default:
|
||||
arr := [...]string{"(a)", "(b)", "(c)"}
|
||||
rand.Seed(time.Now().UnixNano())
|
||||
buffer.WriteString(arr[rand.Intn(3)])
|
||||
break
|
||||
}
|
||||
|
||||
return buffer.String()
|
||||
}
|
||||
|
||||
// isStandardType checks if the given type is a EIP712 conformant type
|
||||
func isStandardType(typeStr string) bool {
|
||||
standardTypes := []string{
|
||||
"array",
|
||||
"address",
|
||||
"boolean",
|
||||
"bytes",
|
||||
"string",
|
||||
"struct",
|
||||
"uint",
|
||||
}
|
||||
for _, val := range standardTypes {
|
||||
if strings.HasPrefix(typeStr, val) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// sortByPriorityAndName is a helper function to sort types by priority and name. Priority is calculated b
|
||||
// based upon the number of references.
|
||||
func sortByPriorityAndName(input map[string]uint) []EIP712TypePriority {
|
||||
var priorities []EIP712TypePriority
|
||||
for key, val := range input {
|
||||
priorities = append(priorities, EIP712TypePriority{key, val})
|
||||
}
|
||||
// Alphabetically
|
||||
sort.Slice(priorities, func(i, j int) bool {
|
||||
return priorities[i].Type < priorities[j].Type
|
||||
})
|
||||
// Priority
|
||||
sort.Slice(priorities, func(i, j int) bool {
|
||||
return priorities[i].Value > priorities[j].Value
|
||||
})
|
||||
|
||||
for _, priority := range priorities {
|
||||
fmt.Printf("%s, Value %d\n", priority.Type, priority.Value)
|
||||
}
|
||||
fmt.Printf("\n")
|
||||
|
||||
return priorities
|
||||
}
|
||||
|
||||
// IsValid checks if the given domain is valid, i.e. contains at least
|
||||
// the minimum viable keys and values
|
||||
func (domain *TypedDataDomain) Validate() error {
|
||||
func (domain *EIP712Domain) IsValid() error {
|
||||
if domain.ChainId == big.NewInt(0) {
|
||||
return errors.New("chainId must be specified according to EIP-155")
|
||||
}
|
||||
|
||||
if len(domain.Name) == 0 && len(domain.Version) == 0 && len(domain.VerifyingContract) == 0 && len(domain.Salt) == 0 {
|
||||
return errors.New("domain is undefined")
|
||||
return errors.New("domain undefined")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Map is a helper function to generate a map version of the domain
|
||||
func (domain *TypedDataDomain) Map() map[string]interface{} {
|
||||
dataMap := map[string]interface{}{
|
||||
"chainId": domain.ChainId,
|
||||
// Values is a helper function to return the values of a domain as a map
|
||||
// with arbitrary values
|
||||
func (domain *EIP712Domain) Values() map[string]interface{} {
|
||||
return map[string]interface{}{
|
||||
"name": domain.Name,
|
||||
"version": domain.Version,
|
||||
"chainId": domain.Name,
|
||||
"verifyingContract": domain.VerifyingContract,
|
||||
"salt": domain.Salt,
|
||||
}
|
||||
|
||||
if len(domain.Name) > 0 {
|
||||
dataMap["name"] = domain.Name
|
||||
}
|
||||
|
||||
if len(domain.Version) > 0 {
|
||||
dataMap["version"] = domain.Version
|
||||
}
|
||||
|
||||
if len(domain.VerifyingContract) > 0 {
|
||||
dataMap["verifyingContract"] = domain.VerifyingContract
|
||||
}
|
||||
|
||||
if len(domain.Salt) > 0 {
|
||||
dataMap["salt"] = domain.Salt
|
||||
}
|
||||
return dataMap
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue