accounts, signer: implement gnosis safe support (#21593)
* accounts, signer: implement gnosis safe support * common/math: add type for marshalling big to dec * accounts, signer: properly sign gnosis requests * signer, clef: implement account_signGnosisTx * signer: fix auditlog print, change rpc-name (signGnosisTx to signGnosisSafeTx) * signer: pass validation-messages/warnings to the UI for gnonsis-safe txs * signer/core: minor change to validationmessages of typed data
This commit is contained in:
Martin Holst Swende
GitHub
parent
6c8310ebb4
commit
dad26582b6
@ -10,6 +10,64 @@ TL;DR: Given a version number MAJOR.MINOR.PATCH, increment the:
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Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.
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### 6.1.0
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The API-method `account_signGnosisSafeTx` was added. This method takes two parameters,
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`[address, safeTx]`. The latter, `safeTx`, can be copy-pasted from the gnosis relay. For example:
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```
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{
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"jsonrpc": "2.0",
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"method": "account_signGnosisSafeTx",
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"params": ["0xfd1c4226bfD1c436672092F4eCbfC270145b7256",
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{
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"safe": "0x25a6c4BBd32B2424A9c99aEB0584Ad12045382B3",
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"to": "0xB372a646f7F05Cc1785018dBDA7EBc734a2A20E2",
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"value": "20000000000000000",
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"data": null,
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"operation": 0,
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"gasToken": "0x0000000000000000000000000000000000000000",
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"safeTxGas": 27845,
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"baseGas": 0,
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"gasPrice": "0",
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"refundReceiver": "0x0000000000000000000000000000000000000000",
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"nonce": 2,
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"executionDate": null,
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"submissionDate": "2020-09-15T21:54:49.617634Z",
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"modified": "2020-09-15T21:54:49.617634Z",
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"blockNumber": null,
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"transactionHash": null,
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"safeTxHash": "0x2edfbd5bc113ff18c0631595db32eb17182872d88d9bf8ee4d8c2dd5db6d95e2",
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"executor": null,
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"isExecuted": false,
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"isSuccessful": null,
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"ethGasPrice": null,
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"gasUsed": null,
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"fee": null,
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"origin": null,
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"dataDecoded": null,
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"confirmationsRequired": null,
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"confirmations": [
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{
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"owner": "0xAd2e180019FCa9e55CADe76E4487F126Fd08DA34",
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"submissionDate": "2020-09-15T21:54:49.663299Z",
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"transactionHash": null,
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"confirmationType": "CONFIRMATION",
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"signature": "0x95a7250bb645f831c86defc847350e7faff815b2fb586282568e96cc859e39315876db20a2eed5f7a0412906ec5ab57652a6f645ad4833f345bda059b9da2b821c",
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"signatureType": "EOA"
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}
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],
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"signatures": null
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}
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],
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"id": 67
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}
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```
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Not all fields are required, though. This method is really just a UX helper, which massages the
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input to conform to the `EIP-712` [specification](https://docs.gnosis.io/safe/docs/contracts_tx_execution/#transaction-hash)
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for the Gnosis Safe, and making the output be directly importable to by a relay service.
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### 6.0.0
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@ -67,6 +67,40 @@ func (i *HexOrDecimal256) MarshalText() ([]byte, error) {
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return []byte(fmt.Sprintf("%#x", (*big.Int)(i))), nil
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}
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// Decimal256 unmarshals big.Int as a decimal string. When unmarshalling,
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// it however accepts either "0x"-prefixed (hex encoded) or non-prefixed (decimal)
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type Decimal256 big.Int
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// NewHexOrDecimal256 creates a new Decimal256
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func NewDecimal256(x int64) *Decimal256 {
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b := big.NewInt(x)
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d := Decimal256(*b)
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return &d
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}
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// UnmarshalText implements encoding.TextUnmarshaler.
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func (i *Decimal256) UnmarshalText(input []byte) error {
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bigint, ok := ParseBig256(string(input))
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if !ok {
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return fmt.Errorf("invalid hex or decimal integer %q", input)
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}
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*i = Decimal256(*bigint)
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return nil
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}
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// MarshalText implements encoding.TextMarshaler.
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func (i *Decimal256) MarshalText() ([]byte, error) {
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return []byte(i.String()), nil
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}
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// String implements Stringer.
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func (i *Decimal256) String() string {
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if i == nil {
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return "0"
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}
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return fmt.Sprintf("%#d", (*big.Int)(i))
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}
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// ParseBig256 parses s as a 256 bit integer in decimal or hexadecimal syntax.
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// Leading zeros are accepted. The empty string parses as zero.
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func ParseBig256(s string) (*big.Int, bool) {
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@ -41,7 +41,7 @@ const (
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// numberOfAccountsToDerive For hardware wallets, the number of accounts to derive
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numberOfAccountsToDerive = 10
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// ExternalAPIVersion -- see extapi_changelog.md
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ExternalAPIVersion = "6.0.0"
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ExternalAPIVersion = "6.1.0"
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// InternalAPIVersion -- see intapi_changelog.md
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InternalAPIVersion = "7.0.1"
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)
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@ -62,6 +62,8 @@ type ExternalAPI interface {
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EcRecover(ctx context.Context, data hexutil.Bytes, sig hexutil.Bytes) (common.Address, error)
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// Version info about the APIs
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Version(ctx context.Context) (string, error)
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// SignGnosisSafeTransaction signs/confirms a gnosis-safe multisig transaction
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SignGnosisSafeTx(ctx context.Context, signerAddress common.MixedcaseAddress, gnosisTx GnosisSafeTx, methodSelector *string) (*GnosisSafeTx, error)
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}
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// UIClientAPI specifies what method a UI needs to implement to be able to be used as a
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@ -234,6 +236,7 @@ type (
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Address common.MixedcaseAddress `json:"address"`
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Rawdata []byte `json:"raw_data"`
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Messages []*NameValueType `json:"messages"`
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Callinfo []ValidationInfo `json:"call_info"`
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Hash hexutil.Bytes `json:"hash"`
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Meta Metadata `json:"meta"`
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}
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@ -581,6 +584,33 @@ func (api *SignerAPI) SignTransaction(ctx context.Context, args SendTxArgs, meth
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}
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func (api *SignerAPI) SignGnosisSafeTx(ctx context.Context, signerAddress common.MixedcaseAddress, gnosisTx GnosisSafeTx, methodSelector *string) (*GnosisSafeTx, error) {
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// Do the usual validations, but on the last-stage transaction
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args := gnosisTx.ArgsForValidation()
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msgs, err := api.validator.ValidateTransaction(methodSelector, args)
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if err != nil {
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return nil, err
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}
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// If we are in 'rejectMode', then reject rather than show the user warnings
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if api.rejectMode {
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if err := msgs.getWarnings(); err != nil {
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return nil, err
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}
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}
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typedData := gnosisTx.ToTypedData()
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signature, preimage, err := api.signTypedData(ctx, signerAddress, typedData, msgs)
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if err != nil {
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return nil, err
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}
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checkSummedSender, _ := common.NewMixedcaseAddressFromString(signerAddress.Address().Hex())
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gnosisTx.Signature = signature
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gnosisTx.SafeTxHash = common.BytesToHash(preimage)
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gnosisTx.Sender = *checkSummedSender // Must be checksumed to be accepted by relay
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return &gnosisTx, nil
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}
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// Returns the external api version. This method does not require user acceptance. Available methods are
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// available via enumeration anyway, and this info does not contain user-specific data
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func (api *SignerAPI) Version(ctx context.Context) (string, error) {
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@ -18,6 +18,7 @@ package core
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import (
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"context"
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"encoding/json"
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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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@ -61,13 +62,32 @@ func (l *AuditLogger) SignTransaction(ctx context.Context, args SendTxArgs, meth
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}
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func (l *AuditLogger) SignData(ctx context.Context, contentType string, addr common.MixedcaseAddress, data interface{}) (hexutil.Bytes, error) {
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marshalledData, _ := json.Marshal(data) // can ignore error, marshalling what we just unmarshalled
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l.log.Info("SignData", "type", "request", "metadata", MetadataFromContext(ctx).String(),
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"addr", addr.String(), "data", data, "content-type", contentType)
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"addr", addr.String(), "data", marshalledData, "content-type", contentType)
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b, e := l.api.SignData(ctx, contentType, addr, data)
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l.log.Info("SignData", "type", "response", "data", common.Bytes2Hex(b), "error", e)
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return b, e
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}
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func (l *AuditLogger) SignGnosisSafeTx(ctx context.Context, addr common.MixedcaseAddress, gnosisTx GnosisSafeTx, methodSelector *string) (*GnosisSafeTx, error) {
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sel := "<nil>"
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if methodSelector != nil {
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sel = *methodSelector
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}
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data, _ := json.Marshal(gnosisTx) // can ignore error, marshalling what we just unmarshalled
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l.log.Info("SignGnosisSafeTx", "type", "request", "metadata", MetadataFromContext(ctx).String(),
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"addr", addr.String(), "data", string(data), "selector", sel)
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res, e := l.api.SignGnosisSafeTx(ctx, addr, gnosisTx, methodSelector)
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if res != nil {
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data, _ := json.Marshal(res) // can ignore error, marshalling what we just unmarshalled
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l.log.Info("SignGnosisSafeTx", "type", "response", "data", string(data), "error", e)
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} else {
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l.log.Info("SignGnosisSafeTx", "type", "response", "data", res, "error", e)
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}
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return res, e
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}
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func (l *AuditLogger) SignTypedData(ctx context.Context, addr common.MixedcaseAddress, data TypedData) (hexutil.Bytes, error) {
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l.log.Info("SignTypedData", "type", "request", "metadata", MetadataFromContext(ctx).String(),
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"addr", addr.String(), "data", data)
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@ -148,6 +148,13 @@ func (ui *CommandlineUI) ApproveSignData(request *SignDataRequest) (SignDataResp
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fmt.Printf("-------- Sign data request--------------\n")
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fmt.Printf("Account: %s\n", request.Address.String())
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if len(request.Callinfo) != 0 {
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fmt.Printf("\nValidation messages:\n")
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for _, m := range request.Callinfo {
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fmt.Printf(" * %s : %s\n", m.Typ, m.Message)
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}
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fmt.Println()
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}
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fmt.Printf("messages:\n")
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for _, nvt := range request.Messages {
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fmt.Printf("\u00a0\u00a0%v\n", strings.TrimSpace(nvt.Pprint(1)))
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91
signer/core/gnosis_safe.go
Normal file
91
signer/core/gnosis_safe.go
Normal file
@ -0,0 +1,91 @@
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package core
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import (
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"fmt"
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"math/big"
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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/common/math"
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)
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// GnosisSafeTx is a type to parse the safe-tx returned by the relayer,
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// it also conforms to the API required by the Gnosis Safe tx relay service.
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// See 'SafeMultisigTransaction' on https://safe-transaction.mainnet.gnosis.io/
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type GnosisSafeTx struct {
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// These fields are only used on output
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Signature hexutil.Bytes `json:"signature"`
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SafeTxHash common.Hash `json:"contractTransactionHash"`
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Sender common.MixedcaseAddress `json:"sender"`
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// These fields are used both on input and output
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Safe common.MixedcaseAddress `json:"safe"`
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To common.MixedcaseAddress `json:"to"`
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Value math.Decimal256 `json:"value"`
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GasPrice math.Decimal256 `json:"gasPrice"`
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Data *hexutil.Bytes `json:"data"`
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Operation uint8 `json:"operation"`
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GasToken common.Address `json:"gasToken"`
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RefundReceiver common.Address `json:"refundReceiver"`
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BaseGas big.Int `json:"baseGas"`
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SafeTxGas big.Int `json:"safeTxGas"`
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Nonce big.Int `json:"nonce"`
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InputExpHash common.Hash `json:"safeTxHash"`
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}
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// ToTypedData converts the tx to a EIP-712 Typed Data structure for signing
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func (tx *GnosisSafeTx) ToTypedData() TypedData {
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var data hexutil.Bytes
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if tx.Data != nil {
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data = *tx.Data
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}
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gnosisTypedData := TypedData{
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Types: Types{
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"EIP712Domain": []Type{{Name: "verifyingContract", Type: "address"}},
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"SafeTx": []Type{
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{Name: "to", Type: "address"},
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{Name: "value", Type: "uint256"},
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{Name: "data", Type: "bytes"},
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{Name: "operation", Type: "uint8"},
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{Name: "safeTxGas", Type: "uint256"},
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{Name: "baseGas", Type: "uint256"},
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{Name: "gasPrice", Type: "uint256"},
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{Name: "gasToken", Type: "address"},
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{Name: "refundReceiver", Type: "address"},
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{Name: "nonce", Type: "uint256"},
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},
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},
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Domain: TypedDataDomain{
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VerifyingContract: tx.Safe.Address().Hex(),
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},
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PrimaryType: "SafeTx",
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Message: TypedDataMessage{
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"to": tx.To.Address().Hex(),
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"value": tx.Value.String(),
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"data": data,
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"operation": fmt.Sprintf("%d", tx.Operation),
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"safeTxGas": fmt.Sprintf("%#d", &tx.SafeTxGas),
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"baseGas": fmt.Sprintf("%#d", &tx.BaseGas),
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"gasPrice": tx.GasPrice.String(),
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"gasToken": tx.GasToken.Hex(),
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"refundReceiver": tx.RefundReceiver.Hex(),
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"nonce": fmt.Sprintf("%d", tx.Nonce.Uint64()),
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},
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}
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return gnosisTypedData
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}
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// ArgsForValidation returns a SendTxArgs struct, which can be used for the
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// common validations, e.g. look up 4byte destinations
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func (tx *GnosisSafeTx) ArgsForValidation() *SendTxArgs {
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args := &SendTxArgs{
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From: tx.Safe,
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To: &tx.To,
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Gas: hexutil.Uint64(tx.SafeTxGas.Uint64()),
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GasPrice: hexutil.Big(tx.GasPrice),
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Value: hexutil.Big(tx.Value),
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Nonce: hexutil.Uint64(tx.Nonce.Uint64()),
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Data: tx.Data,
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Input: nil,
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}
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return args
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}
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@ -125,7 +125,7 @@ var typedDataReferenceTypeRegexp = regexp.MustCompile(`^[A-Z](\w*)(\[\])?$`)
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//
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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, if legacyV==true.
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func (api *SignerAPI) sign(addr common.MixedcaseAddress, req *SignDataRequest, legacyV bool) (hexutil.Bytes, error) {
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func (api *SignerAPI) sign(req *SignDataRequest, legacyV bool) (hexutil.Bytes, error) {
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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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@ -136,7 +136,7 @@ func (api *SignerAPI) sign(addr common.MixedcaseAddress, req *SignDataRequest, l
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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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account := accounts.Account{Address: req.Address.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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@ -167,7 +167,7 @@ func (api *SignerAPI) SignData(ctx context.Context, contentType string, addr com
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if err != nil {
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return nil, err
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}
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signature, err := api.sign(addr, req, transformV)
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signature, err := api.sign(req, transformV)
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if err != nil {
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api.UI.ShowError(err.Error())
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return nil, err
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@ -312,28 +312,47 @@ func cliqueHeaderHashAndRlp(header *types.Header) (hash, rlp []byte, err error)
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// SignTypedData signs EIP-712 conformant typed data
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// hash = keccak256("\x19${byteVersion}${domainSeparator}${hashStruct(message)}")
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// It returns
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// - the signature,
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// - and/or any error
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func (api *SignerAPI) SignTypedData(ctx context.Context, addr common.MixedcaseAddress, typedData TypedData) (hexutil.Bytes, error) {
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signature, _, err := api.signTypedData(ctx, addr, typedData, nil)
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return signature, err
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}
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// signTypedData is identical to the capitalized version, except that it also returns the hash (preimage)
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// - the signature preimage (hash)
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func (api *SignerAPI) signTypedData(ctx context.Context, addr common.MixedcaseAddress,
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typedData TypedData, validationMessages *ValidationMessages) (hexutil.Bytes, hexutil.Bytes, error) {
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domainSeparator, err := typedData.HashStruct("EIP712Domain", typedData.Domain.Map())
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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typedDataHash, err := typedData.HashStruct(typedData.PrimaryType, typedData.Message)
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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rawData := []byte(fmt.Sprintf("\x19\x01%s%s", string(domainSeparator), string(typedDataHash)))
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sighash := crypto.Keccak256(rawData)
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messages, err := typedData.Format()
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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req := &SignDataRequest{ContentType: DataTyped.Mime, Rawdata: rawData, Messages: messages, Hash: sighash}
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signature, err := api.sign(addr, req, true)
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req := &SignDataRequest{
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ContentType: DataTyped.Mime,
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Rawdata: rawData,
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Messages: messages,
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Hash: sighash,
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Address: addr}
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if validationMessages != nil {
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req.Callinfo = validationMessages.Messages
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}
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signature, err := api.sign(req, true)
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if err != nil {
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api.UI.ShowError(err.Error())
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return nil, err
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return nil, nil, err
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}
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return signature, nil
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return signature, sighash, nil
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}
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// HashStruct generates a keccak256 hash of the encoding of the provided data
|
||||
@ -420,8 +439,8 @@ func (typedData *TypedData) EncodeData(primaryType string, data map[string]inter
|
||||
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")
|
||||
if exp, got := len(typedData.Types[primaryType]), len(data); exp < got {
|
||||
return nil, fmt.Errorf("there is extra data provided in the message (%d < %d)", exp, got)
|
||||
}
|
||||
|
||||
// Add typehash
|
||||
@ -834,7 +853,11 @@ func (nvt *NameValueType) Pprint(depth int) string {
|
||||
output.WriteString(sublevel)
|
||||
}
|
||||
} else {
|
||||
output.WriteString(fmt.Sprintf("%q\n", nvt.Value))
|
||||
if nvt.Value != nil {
|
||||
output.WriteString(fmt.Sprintf("%q\n", nvt.Value))
|
||||
} else {
|
||||
output.WriteString("\n")
|
||||
}
|
||||
}
|
||||
return output.String()
|
||||
}
|
||||
|
||||
@ -17,6 +17,7 @@
|
||||
package core_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
@ -414,3 +415,119 @@ func TestFuzzerFiles(t *testing.T) {
|
||||
typedData.Format()
|
||||
}
|
||||
}
|
||||
|
||||
var gnosisTypedData = `
|
||||
{
|
||||
"types": {
|
||||
"EIP712Domain": [
|
||||
{ "type": "address", "name": "verifyingContract" }
|
||||
],
|
||||
"SafeTx": [
|
||||
{ "type": "address", "name": "to" },
|
||||
{ "type": "uint256", "name": "value" },
|
||||
{ "type": "bytes", "name": "data" },
|
||||
{ "type": "uint8", "name": "operation" },
|
||||
{ "type": "uint256", "name": "safeTxGas" },
|
||||
{ "type": "uint256", "name": "baseGas" },
|
||||
{ "type": "uint256", "name": "gasPrice" },
|
||||
{ "type": "address", "name": "gasToken" },
|
||||
{ "type": "address", "name": "refundReceiver" },
|
||||
{ "type": "uint256", "name": "nonce" }
|
||||
]
|
||||
},
|
||||
"domain": {
|
||||
"verifyingContract": "0x25a6c4BBd32B2424A9c99aEB0584Ad12045382B3"
|
||||
},
|
||||
"primaryType": "SafeTx",
|
||||
"message": {
|
||||
"to": "0x9eE457023bB3De16D51A003a247BaEaD7fce313D",
|
||||
"value": "20000000000000000",
|
||||
"data": "0x",
|
||||
"operation": 0,
|
||||
"safeTxGas": 27845,
|
||||
"baseGas": 0,
|
||||
"gasPrice": "0",
|
||||
"gasToken": "0x0000000000000000000000000000000000000000",
|
||||
"refundReceiver": "0x0000000000000000000000000000000000000000",
|
||||
"nonce": 3
|
||||
}
|
||||
}`
|
||||
|
||||
var gnosisTx = `
|
||||
{
|
||||
"safe": "0x25a6c4BBd32B2424A9c99aEB0584Ad12045382B3",
|
||||
"to": "0x9eE457023bB3De16D51A003a247BaEaD7fce313D",
|
||||
"value": "20000000000000000",
|
||||
"data": null,
|
||||
"operation": 0,
|
||||
"gasToken": "0x0000000000000000000000000000000000000000",
|
||||
"safeTxGas": 27845,
|
||||
"baseGas": 0,
|
||||
"gasPrice": "0",
|
||||
"refundReceiver": "0x0000000000000000000000000000000000000000",
|
||||
"nonce": 3,
|
||||
"executionDate": null,
|
||||
"submissionDate": "2020-09-15T21:59:23.815748Z",
|
||||
"modified": "2020-09-15T21:59:23.815748Z",
|
||||
"blockNumber": null,
|
||||
"transactionHash": null,
|
||||
"safeTxHash": "0x28bae2bd58d894a1d9b69e5e9fde3570c4b98a6fc5499aefb54fb830137e831f",
|
||||
"executor": null,
|
||||
"isExecuted": false,
|
||||
"isSuccessful": null,
|
||||
"ethGasPrice": null,
|
||||
"gasUsed": null,
|
||||
"fee": null,
|
||||
"origin": null,
|
||||
"dataDecoded": null,
|
||||
"confirmationsRequired": null,
|
||||
"confirmations": [
|
||||
{
|
||||
"owner": "0xAd2e180019FCa9e55CADe76E4487F126Fd08DA34",
|
||||
"submissionDate": "2020-09-15T21:59:28.281243Z",
|
||||
"transactionHash": null,
|
||||
"confirmationType": "CONFIRMATION",
|
||||
"signature": "0x5e562065a0cb15d766dac0cd49eb6d196a41183af302c4ecad45f1a81958d7797753f04424a9b0aa1cb0448e4ec8e189540fbcdda7530ef9b9d95dfc2d36cb521b",
|
||||
"signatureType": "EOA"
|
||||
}
|
||||
],
|
||||
"signatures": null
|
||||
}
|
||||
`
|
||||
|
||||
// TestGnosisTypedData tests the scenario where a user submits a full EIP-712
|
||||
// struct without using the gnosis-specific endpoint
|
||||
func TestGnosisTypedData(t *testing.T) {
|
||||
var td core.TypedData
|
||||
err := json.Unmarshal([]byte(gnosisTypedData), &td)
|
||||
if err != nil {
|
||||
t.Fatalf("unmarshalling failed '%v'", err)
|
||||
}
|
||||
_, sighash, err := sign(td)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
expSigHash := common.FromHex("0x28bae2bd58d894a1d9b69e5e9fde3570c4b98a6fc5499aefb54fb830137e831f")
|
||||
if !bytes.Equal(expSigHash, sighash) {
|
||||
t.Fatalf("Error, got %x, wanted %x", sighash, expSigHash)
|
||||
}
|
||||
}
|
||||
|
||||
// TestGnosisCustomData tests the scenario where a user submits only the gnosis-safe
|
||||
// specific data, and we fill the TypedData struct on our side
|
||||
func TestGnosisCustomData(t *testing.T) {
|
||||
var tx core.GnosisSafeTx
|
||||
err := json.Unmarshal([]byte(gnosisTx), &tx)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
var td = tx.ToTypedData()
|
||||
_, sighash, err := sign(td)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
expSigHash := common.FromHex("0x28bae2bd58d894a1d9b69e5e9fde3570c4b98a6fc5499aefb54fb830137e831f")
|
||||
if !bytes.Equal(expSigHash, sighash) {
|
||||
t.Fatalf("Error, got %x, wanted %x", sighash, expSigHash)
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user