141 lines
5.4 KiB
Nim
141 lines
5.4 KiB
Nim
# Nimbus
|
|
# Copyright (c) 2018 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
|
|
# http://www.apache.org/licenses/LICENSE-2.0)
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
|
|
# http://opensource.org/licenses/MIT)
|
|
# at your option. This file may not be copied, modified, or distributed except
|
|
# according to those terms.
|
|
|
|
import
|
|
std/[sets],
|
|
../../db/accounts_cache,
|
|
../../forks,
|
|
../../transaction/call_evm,
|
|
../../transaction,
|
|
../../vm_state,
|
|
../../vm_types,
|
|
../validate,
|
|
./executor_helpers,
|
|
chronicles,
|
|
eth/common,
|
|
stew/results
|
|
|
|
{.push raises: [Defect].}
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Private functions
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc eip1559BaseFee(header: BlockHeader; fork: Fork): UInt256 =
|
|
## Actually, `baseFee` should be 0 for pre-London headers already. But this
|
|
## function just plays safe. In particular, the `test_general_state_json.nim`
|
|
## module modifies this block header `baseFee` field unconditionally :(.
|
|
if FkLondon <= fork:
|
|
result = header.baseFee
|
|
|
|
proc processTransactionImpl(
|
|
vmState: BaseVMState; ## Parent accounts environment for transaction
|
|
tx: Transaction; ## Transaction to validate
|
|
sender: EthAddress; ## tx.getSender or tx.ecRecover
|
|
header: BlockHeader; ## Header for the block containing the current tx
|
|
fork: Fork): Result[GasInt,void]
|
|
# wildcard exception, wrapped below
|
|
{.gcsafe, raises: [Exception].} =
|
|
## Modelled after `https://eips.ethereum.org/EIPS/eip-1559#specification`_
|
|
## which provides a backward compatible framwork for EIP1559.
|
|
|
|
#trace "Sender", sender
|
|
#trace "txHash", rlpHash = ty.rlpHash
|
|
|
|
let
|
|
roDB = vmState.readOnlyStateDB
|
|
baseFee256 = header.eip1559BaseFee(fork)
|
|
baseFee = baseFee256.truncate(GasInt)
|
|
tx = eip1559TxNormalization(tx, baseFee, fork)
|
|
priorityFee = min(tx.maxPriorityFee, tx.maxFee - baseFee)
|
|
miner = vmState.coinbase()
|
|
|
|
# Return failure unless explicitely set `ok()`
|
|
result = err()
|
|
|
|
# Actually, the eip-1559 reference does not mention an early exit.
|
|
#
|
|
# Even though database was not changed yet but, a `persist()` directive
|
|
# before leaving is crucial for some unit tests that us a direct/deep call
|
|
# of the `processTransaction()` function. So there is no `return err()`
|
|
# statement, here.
|
|
if roDB.validateTransaction(tx, sender, header.gasLimit, baseFee256, fork):
|
|
|
|
# Execute the transaction.
|
|
let
|
|
accTx = vmState.stateDB.beginSavepoint
|
|
gasBurned = tx.txCallEvm(sender, vmState, fork)
|
|
|
|
# Make sure that the tx does not exceed the maximum cumulative limit as
|
|
# set in the block header. Again, the eip-1559 reference does not mention
|
|
# an early stop. It would rather detect differing values for the block
|
|
# header `gasUsed` and the `vmState.cumulativeGasUsed` at a later stage.
|
|
if header.gasLimit < vmState.cumulativeGasUsed + gasBurned:
|
|
vmState.stateDB.rollback(accTx)
|
|
debug "invalid tx: block header gasLimit reached",
|
|
maxLimit = header.gasLimit,
|
|
gasUsed = vmState.cumulativeGasUsed,
|
|
addition = gasBurned
|
|
else:
|
|
# Accept transaction and collect mining fee.
|
|
vmState.stateDB.commit(accTx)
|
|
vmState.stateDB.addBalance(miner, gasBurned.u256 * priorityFee.u256)
|
|
vmState.cumulativeGasUsed += gasBurned
|
|
result = ok(gasBurned)
|
|
|
|
vmState.mutateStateDB:
|
|
for deletedAccount in vmState.selfDestructs:
|
|
db.deleteAccount deletedAccount
|
|
|
|
if fork >= FkSpurious:
|
|
vmState.touchedAccounts.incl(miner)
|
|
# EIP158/161 state clearing
|
|
for account in vmState.touchedAccounts:
|
|
if db.accountExists(account) and db.isEmptyAccount(account):
|
|
debug "state clearing", account
|
|
db.deleteAccount(account)
|
|
|
|
if vmState.generateWitness:
|
|
vmState.stateDB.collectWitnessData()
|
|
vmState.stateDB.persist(clearCache = false)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public functions
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc processTransaction*(
|
|
vmState: BaseVMState; ## Parent accounts environment for transaction
|
|
tx: Transaction; ## Transaction to validate
|
|
sender: EthAddress; ## tx.getSender or tx.ecRecover
|
|
header: BlockHeader; ## Header for the block containing the current tx
|
|
fork: Fork): Result[GasInt,void]
|
|
{.gcsafe, raises: [Defect,CatchableError].} =
|
|
## Process the transaction, write the results to accounts db. The function
|
|
## returns the amount of gas burned if executed.
|
|
safeExecutor("processTransaction"):
|
|
result = vmState.processTransactionImpl(tx, sender, header, fork)
|
|
|
|
proc processTransaction*(
|
|
vmState: BaseVMState; ## Parent accounts environment for transaction
|
|
tx: Transaction; ## Transaction to validate
|
|
sender: EthAddress; ## tx.getSender or tx.ecRecover
|
|
header: BlockHeader): Result[GasInt,void]
|
|
{.gcsafe, raises: [Defect,CatchableError].} =
|
|
## Variant of `processTransaction()` with `*fork* derived
|
|
## from the `vmState` argument.
|
|
var fork: Fork
|
|
safeExecutor("processTransaction"):
|
|
fork = vmState.getForkUnsafe
|
|
vmState.processTransaction(tx, sender, header, fork)
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# End
|
|
# ------------------------------------------------------------------------------
|