mirror of https://github.com/status-im/nim-eth.git
73 lines
2.1 KiB
Nim
73 lines
2.1 KiB
Nim
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import
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eth/[common, rlp, keys], nimcrypto
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proc initTransaction*(nonce: AccountNonce, gasPrice, gasLimit: GasInt, to: EthAddress,
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value: UInt256, payload: Blob, V: byte, R, S: UInt256, isContractCreation = false): Transaction =
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result.accountNonce = nonce
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result.gasPrice = gasPrice
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result.gasLimit = gasLimit
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result.to = to
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result.value = value
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result.payload = payload
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result.V = V
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result.R = R
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result.S = S
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result.isContractCreation = isContractCreation
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type
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TransHashObj = object
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accountNonce: AccountNonce
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gasPrice: GasInt
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gasLimit: GasInt
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to {.rlpCustomSerialization.}: EthAddress
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value: UInt256
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payload: Blob
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mIsContractCreation {.rlpIgnore.}: bool
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proc read(rlp: var Rlp, t: var TransHashObj, _: type EthAddress): EthAddress {.inline.} =
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if rlp.blobLen != 0:
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result = rlp.read(EthAddress)
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else:
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t.mIsContractCreation = true
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proc append(rlpWriter: var RlpWriter, t: TransHashObj, a: EthAddress) {.inline.} =
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if t.mIsContractCreation:
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rlpWriter.append("")
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else:
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rlpWriter.append(a)
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const
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EIP155_CHAIN_ID_OFFSET = 35
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func rlpEncode*(transaction: Transaction): auto =
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# Encode transaction without signature
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return rlp.encode(TransHashObj(
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accountNonce: transaction.accountNonce,
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gasPrice: transaction.gasPrice,
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gasLimit: transaction.gasLimit,
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to: transaction.to,
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value: transaction.value,
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payload: transaction.payload,
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mIsContractCreation: transaction.isContractCreation
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))
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func rlpEncodeEIP155*(tx: Transaction): auto =
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let V = (tx.V.int - EIP155_CHAIN_ID_OFFSET) div 2
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# Encode transaction without signature
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return rlp.encode(Transaction(
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accountNonce: tx.accountNonce,
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gasPrice: tx.gasPrice,
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gasLimit: tx.gasLimit,
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to: tx.to,
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value: tx.value,
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payload: tx.payload,
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isContractCreation: tx.isContractCreation,
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V: V.byte,
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R: 0.u256,
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S: 0.u256
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))
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func txHashNoSignature*(tx: Transaction): Hash256 =
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# Hash transaction without signature
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return keccak256.digest(if tx.V.int >= EIP155_CHAIN_ID_OFFSET: tx.rlpEncodeEIP155 else: tx.rlpEncode)
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