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accounts, signer: implement gnosis safe support (#21593)

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* 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
2020-09-29 17:40:08 +02:00
committed by GitHub
parent 6c8310ebb4
commit dad26582b6
8 changed files with 395 additions and 15 deletions
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32
signer/core/api.go
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@ -41,7 +41,7 @@ const (
// numberOfAccountsToDerive For hardware wallets, the number of accounts to derive
numberOfAccountsToDerive = 10
// ExternalAPIVersion -- see extapi_changelog.md
ExternalAPIVersion = "6.0.0"
ExternalAPIVersion = "6.1.0"
// InternalAPIVersion -- see intapi_changelog.md
InternalAPIVersion = "7.0.1"
)
@ -62,6 +62,8 @@ type ExternalAPI interface {
EcRecover(ctx context.Context, data hexutil.Bytes, sig hexutil.Bytes) (common.Address, error)
// Version info about the APIs
Version(ctx context.Context) (string, error)
// SignGnosisSafeTransaction signs/confirms a gnosis-safe multisig transaction
SignGnosisSafeTx(ctx context.Context, signerAddress common.MixedcaseAddress, gnosisTx GnosisSafeTx, methodSelector *string) (*GnosisSafeTx, error)
}
// UIClientAPI specifies what method a UI needs to implement to be able to be used as a
@ -234,6 +236,7 @@ type (
Address common.MixedcaseAddress `json:"address"`
Rawdata []byte `json:"raw_data"`
Messages []*NameValueType `json:"messages"`
Callinfo []ValidationInfo `json:"call_info"`
Hash hexutil.Bytes `json:"hash"`
Meta Metadata `json:"meta"`
}
@ -581,6 +584,33 @@ func (api *SignerAPI) SignTransaction(ctx context.Context, args SendTxArgs, meth
}
func (api *SignerAPI) SignGnosisSafeTx(ctx context.Context, signerAddress common.MixedcaseAddress, gnosisTx GnosisSafeTx, methodSelector *string) (*GnosisSafeTx, error) {
// Do the usual validations, but on the last-stage transaction
args := gnosisTx.ArgsForValidation()
msgs, err := api.validator.ValidateTransaction(methodSelector, args)
if err != nil {
return nil, err
}
// If we are in 'rejectMode', then reject rather than show the user warnings
if api.rejectMode {
if err := msgs.getWarnings(); err != nil {
return nil, err
}
}
typedData := gnosisTx.ToTypedData()
signature, preimage, err := api.signTypedData(ctx, signerAddress, typedData, msgs)
if err != nil {
return nil, err
}
checkSummedSender, _ := common.NewMixedcaseAddressFromString(signerAddress.Address().Hex())
gnosisTx.Signature = signature
gnosisTx.SafeTxHash = common.BytesToHash(preimage)
gnosisTx.Sender = *checkSummedSender // Must be checksumed to be accepted by relay
return &gnosisTx, nil
}
// Returns the external api version. This method does not require user acceptance. Available methods are
// available via enumeration anyway, and this info does not contain user-specific data
func (api *SignerAPI) Version(ctx context.Context) (string, error) {