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- package core
- import (
- "fmt"
- "math/big"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/common/hexutil"
- "github.com/ethereum/go-ethereum/common/math"
- )
- // GnosisSafeTx is a type to parse the safe-tx returned by the relayer,
- // it also conforms to the API required by the Gnosis Safe tx relay service.
- // See 'SafeMultisigTransaction' on https://safe-transaction.mainnet.gnosis.io/
- type GnosisSafeTx struct {
- // These fields are only used on output
- Signature hexutil.Bytes `json:"signature"`
- SafeTxHash common.Hash `json:"contractTransactionHash"`
- Sender common.MixedcaseAddress `json:"sender"`
- // These fields are used both on input and output
- Safe common.MixedcaseAddress `json:"safe"`
- To common.MixedcaseAddress `json:"to"`
- Value math.Decimal256 `json:"value"`
- GasPrice math.Decimal256 `json:"gasPrice"`
- Data *hexutil.Bytes `json:"data"`
- Operation uint8 `json:"operation"`
- GasToken common.Address `json:"gasToken"`
- RefundReceiver common.Address `json:"refundReceiver"`
- BaseGas big.Int `json:"baseGas"`
- SafeTxGas big.Int `json:"safeTxGas"`
- Nonce big.Int `json:"nonce"`
- InputExpHash common.Hash `json:"safeTxHash"`
- }
- // ToTypedData converts the tx to a EIP-712 Typed Data structure for signing
- func (tx *GnosisSafeTx) ToTypedData() TypedData {
- var data hexutil.Bytes
- if tx.Data != nil {
- data = *tx.Data
- }
- gnosisTypedData := TypedData{
- Types: Types{
- "EIP712Domain": []Type{{Name: "verifyingContract", Type: "address"}},
- "SafeTx": []Type{
- {Name: "to", Type: "address"},
- {Name: "value", Type: "uint256"},
- {Name: "data", Type: "bytes"},
- {Name: "operation", Type: "uint8"},
- {Name: "safeTxGas", Type: "uint256"},
- {Name: "baseGas", Type: "uint256"},
- {Name: "gasPrice", Type: "uint256"},
- {Name: "gasToken", Type: "address"},
- {Name: "refundReceiver", Type: "address"},
- {Name: "nonce", Type: "uint256"},
- },
- },
- Domain: TypedDataDomain{
- VerifyingContract: tx.Safe.Address().Hex(),
- },
- PrimaryType: "SafeTx",
- Message: TypedDataMessage{
- "to": tx.To.Address().Hex(),
- "value": tx.Value.String(),
- "data": data,
- "operation": fmt.Sprintf("%d", tx.Operation),
- "safeTxGas": fmt.Sprintf("%#d", &tx.SafeTxGas),
- "baseGas": fmt.Sprintf("%#d", &tx.BaseGas),
- "gasPrice": tx.GasPrice.String(),
- "gasToken": tx.GasToken.Hex(),
- "refundReceiver": tx.RefundReceiver.Hex(),
- "nonce": fmt.Sprintf("%d", tx.Nonce.Uint64()),
- },
- }
- return gnosisTypedData
- }
- // ArgsForValidation returns a SendTxArgs struct, which can be used for the
- // common validations, e.g. look up 4byte destinations
- func (tx *GnosisSafeTx) ArgsForValidation() *SendTxArgs {
- args := &SendTxArgs{
- From: tx.Safe,
- To: &tx.To,
- Gas: hexutil.Uint64(tx.SafeTxGas.Uint64()),
- GasPrice: hexutil.Big(tx.GasPrice),
- Value: hexutil.Big(tx.Value),
- Nonce: hexutil.Uint64(tx.Nonce.Uint64()),
- Data: tx.Data,
- Input: nil,
- }
- return args
- }
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