80 lines
2.7 KiB
Nim
80 lines
2.7 KiB
Nim
# Nimbus
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# Copyright (c) 2018-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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./[constants],
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eth/common/[addresses, keys, transactions, transactions_rlp, transaction_utils]
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export addresses, keys, transactions
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proc signTransaction*(tx: Transaction, privateKey: PrivateKey, eip155 = true): Transaction =
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result = tx
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result.signature = result.sign(privateKey, eip155)
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# deriveChainId derives the chain id from the given v parameter
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func deriveChainId*(v: uint64, chainId: ChainId): ChainId =
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if v == 27 or v == 28:
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chainId
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else:
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((v - 35) div 2).ChainId
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func validateChainId*(tx: Transaction, chainId: ChainId): bool =
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if tx.txType == TxLegacy:
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chainId.uint64 == deriveChainId(tx.V, chainId).uint64
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else:
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chainId.uint64 == tx.chainId.uint64
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func eip1559TxNormalization*(tx: Transaction;
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baseFeePerGas: GasInt): Transaction =
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## This function adjusts a legacy transaction to EIP-1559 standard. This
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## is needed particularly when using the `validateTransaction()` utility
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## with legacy transactions.
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result = tx
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if tx.txType < TxEip1559:
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result.maxPriorityFeePerGas = tx.gasPrice
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result.maxFeePerGas = tx.gasPrice
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else:
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result.gasPrice = baseFeePerGas +
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min(result.maxPriorityFeePerGas, result.maxFeePerGas - baseFeePerGas)
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func maxPriorityFeePerGasNorm*(tx: Transaction): GasInt =
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if tx.txType < TxEip1559:
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tx.gasPrice
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else:
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tx.maxPriorityFeePerGas
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func maxFeePerGasNorm*(tx: Transaction): GasInt =
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if tx.txType < TxEip1559:
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tx.gasPrice
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else:
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tx.maxFeePerGas
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func effectiveGasPrice*(tx: Transaction, baseFeePerGas: GasInt): GasInt =
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if tx.txType < TxEip1559:
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tx.gasPrice
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else:
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baseFeePerGas +
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min(tx.maxPriorityFeePerGas, tx.maxFeePerGas - baseFeePerGas)
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func effectiveGasTip*(tx: Transaction; baseFeePerGas: Opt[UInt256]): GasInt =
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let
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baseFeePerGas = baseFeePerGas.get(0.u256).truncate(GasInt)
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min(tx.maxPriorityFeePerGasNorm(), tx.maxFeePerGasNorm() - baseFeePerGas)
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proc decodeTx*(bytes: openArray[byte]): Transaction =
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var rlp = rlpFromBytes(bytes)
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result = rlp.read(Transaction)
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if rlp.hasData:
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raise newException(RlpError, "rlp: input contains more than one value")
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proc decodePooledTx*(bytes: openArray[byte]): PooledTransaction =
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var rlp = rlpFromBytes(bytes)
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result = rlp.read(PooledTransaction)
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if rlp.hasData:
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raise newException(RlpError, "rlp: input contains more than one value")
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