592 lines
21 KiB
Nim
592 lines
21 KiB
Nim
# Nimbus
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# Copyright (c) 2021-2023 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))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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# at your option.
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# This file may not be copied, modified, or distributed except according to
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# those terms.
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{.push raises: [].}
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import
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std/[tables, strutils, options, times, macros],
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eth/[common, rlp, p2p], stint, stew/[byteutils],
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json_serialization, chronicles,
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json_serialization/std/options as jsoptions,
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json_serialization/std/tables as jstable,
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json_serialization/lexer,
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"."/[genesis_alloc, hardforks]
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export
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hardforks
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type
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Genesis* = ref object
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# for geth compatibility
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config* : ChainConfig
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nonce* : BlockNonce
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timestamp* : EthTime
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extraData* : seq[byte]
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gasLimit* : GasInt
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difficulty* : DifficultyInt
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mixHash* : Hash256
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coinbase* : EthAddress
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alloc* : GenesisAlloc
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number* : BlockNumber
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gasUser* : GasInt
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parentHash* : Hash256
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baseFeePerGas*: Option[UInt256] # EIP-1559
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blobGasUsed* : Option[uint64] # EIP-4844
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excessBlobGas*: Option[uint64] # EIP-4844
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parentBeaconBlockRoot*: Option[Hash256] # EIP-4788
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GenesisAlloc* = Table[EthAddress, GenesisAccount]
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GenesisAccount* = object
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code* : seq[byte]
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storage*: Table[UInt256, UInt256]
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balance*: UInt256
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nonce* : AccountNonce
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NetworkParams* = object
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config* : ChainConfig
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genesis*: Genesis
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const
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CustomNet* = 0.NetworkId
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# these are public network id
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MainNet* = 1.NetworkId
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GoerliNet* = 5.NetworkId
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SepoliaNet* = 11155111.NetworkId
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HoleskyNet* = 17000.NetworkId
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# ------------------------------------------------------------------------------
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# Private helper functions
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# ------------------------------------------------------------------------------
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proc writeValue(writer: var JsonWriter, value: Option[EthTime])
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{.gcsafe, raises: [IOError].} =
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mixin writeValue
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if value.isSome:
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writer.writeValue value.get.uint64
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else:
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writer.writeValue JsonString("null")
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type
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Slots = object
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key: UInt256
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val: UInt256
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Misc = object
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nonce: uint64
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code : seq[byte]
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storage: seq[Slots]
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AddressBalance = object
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address: EthAddress
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account: GenesisAccount
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proc read*(rlp: var Rlp, T: type AddressBalance): T {.gcsafe, raises: [RlpError].}=
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let listLen = rlp.listLen
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rlp.tryEnterList()
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let val = rlp.read(UInt256).toBytesBE()
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result.address[0..^1] = val.toOpenArray(12, val.high)
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result.account.balance = rlp.read(UInt256)
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if listLen == 3:
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var misc = rlp.read(Misc)
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result.account.nonce = misc.nonce
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result.account.code = system.move(misc.code)
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for x in misc.storage:
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result.account.storage[x.key] = x.val
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proc append*(w: var RlpWriter, ab: AddressBalance) =
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var listLen = 2
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if ab.account.storage.len > 0 or
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ab.account.nonce != 0.AccountNonce or
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ab.account.code.len > 0:
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inc listLen
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w.startList(listLen)
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var tmp: array[32, byte]
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tmp[12..^1] = ab.address[0..^1]
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var val = UInt256.fromBytesBE(tmp)
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w.append(val)
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w.append(ab.account.balance)
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if listLen == 3:
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var misc: Misc
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misc.nonce = ab.account.nonce
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misc.code = ab.account.code
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for k, v in ab.account.storage:
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misc.storage.add Slots(key:k, val: v)
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w.append(misc)
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proc append*(w: var RlpWriter, ga: GenesisAlloc) =
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var list: seq[AddressBalance]
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for k, v in ga:
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list.add AddressBalance(
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address: k, account: v
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)
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w.append(list)
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func decodePrealloc*(data: seq[byte]): GenesisAlloc
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{.gcsafe, raises: [RlpError].} =
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for tup in rlp.decode(data, seq[AddressBalance]):
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result[tup.address] = tup.account
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# borrowed from `lexer.hexCharValue()` :)
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proc fromHex(c: char): int =
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case c
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of '0'..'9': ord(c) - ord('0')
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of 'a'..'f': ord(c) - ord('a') + 10
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of 'A'..'F': ord(c) - ord('A') + 10
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else: -1
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proc readValue(reader: var JsonReader, value: var UInt256)
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{.gcsafe, raises: [SerializationError, IOError].} =
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## Mixin for `Json.loadFile()`. Note that this driver applies the same
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## to `BlockNumber` fields as well as generic `UInt265` fields like the
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## account `balance`.
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var (accu, ok) = (0.u256, true)
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if reader.lexer.lazyTok == tkNumeric:
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try:
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reader.lexer.customIntValueIt:
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accu = accu * 10 + it.u256
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ok = reader.lexer.lazyTok == tkExInt # non-negative wanted
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except CatchableError:
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ok = false
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elif reader.lexer.lazyTok == tkQuoted:
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try:
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var (sLen, base) = (0, 10)
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reader.lexer.customTextValueIt:
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if ok:
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var num = it.fromHex
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if base <= num:
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ok = false # cannot be larger than base
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elif sLen < 2:
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if 0 <= num:
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accu = accu * base.u256 + num.u256
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elif sLen == 1 and it in {'x', 'X'}:
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base = 16 # handle "0x" prefix
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else:
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ok = false
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sLen.inc
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elif num < 0:
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ok = false # not a hex digit
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elif base == 10:
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accu = accu * 10 + num.u256
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else:
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accu = accu * 16 + num.u256
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except CatchableError:
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reader.raiseUnexpectedValue("numeric string parse error")
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else:
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reader.raiseUnexpectedValue("expect int or hex/int string")
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if not ok:
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reader.raiseUnexpectedValue("Uint256 parse error")
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value = accu
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reader.lexer.next()
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proc readValue(reader: var JsonReader, value: var ChainId)
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{.gcsafe, raises: [SerializationError, IOError].} =
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value = reader.readValue(int).ChainId
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proc readValue(reader: var JsonReader, value: var Hash256)
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{.gcsafe, raises: [SerializationError, IOError].} =
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value = Hash256.fromHex(reader.readValue(string))
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proc readValue(reader: var JsonReader, value: var BlockNonce)
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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value = fromHex[uint64](reader.readValue(string)).toBlockNonce
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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# genesis timestamp is in hex/dec
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proc readValue(reader: var JsonReader, value: var EthTime)
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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let data = reader.readValue(string)
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if data.len > 2 and data[1] == 'x':
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value = fromHex[int64](data).EthTime
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else:
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value = parseInt(data).EthTime
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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# but shanghaiTime and cancunTime in config is in int literal
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proc readValue(reader: var JsonReader, value: var Option[EthTime])
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{.gcsafe, raises: [IOError].} =
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let tok = reader.lexer.lazyTok
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if tok == tkNull:
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reset value
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reader.lexer.next()
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else:
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# both readValue(GasInt/AccountNonce) will be called if
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# we use readValue(int64/uint64)
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let tok {.used.} = reader.lexer.tok # resove lazy token
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let val = EthTime reader.lexer.absIntVal
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value = some val
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reader.lexer.next()
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proc readValue(reader: var JsonReader, value: var seq[byte])
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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value = hexToSeqByte(reader.readValue(string))
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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proc readValue(reader: var JsonReader, value: var GasInt)
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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value = fromHex[GasInt](reader.readValue(string))
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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proc readValue(reader: var JsonReader, value: var EthAddress)
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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value = parseAddress(reader.readValue(string))
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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proc readValue(reader: var JsonReader, value: var AccountNonce)
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{.gcsafe, raises: [SerializationError, IOError].} =
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try:
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value = fromHex[uint64](reader.readValue(string))
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except ValueError as ex:
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reader.raiseUnexpectedValue(ex.msg)
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template to(a: string, b: type EthAddress): EthAddress =
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# json_serialization decode table stuff
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parseAddress(a)
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template to(a: string, b: type UInt256): UInt256 =
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# json_serialization decode table stuff
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UInt256.fromHex(a)
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macro fillArrayOfBlockNumberBasedForkOptionals(conf, tmp: typed): untyped =
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result = newStmtList()
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for i, x in forkBlockField:
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let fieldIdent = newIdentNode(x)
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result.add quote do:
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`tmp`[`i`] = BlockNumberBasedForkOptional(
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number : `conf`.`fieldIdent`,
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name : `x`)
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macro fillArrayOfTimeBasedForkOptionals(conf, tmp: typed): untyped =
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result = newStmtList()
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for i, x in forkTimeField:
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let fieldIdent = newIdentNode(x)
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result.add quote do:
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`tmp`[`i`] = TimeBasedForkOptional(
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time : `conf`.`fieldIdent`,
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name : `x`)
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc toHardFork*(map: ForkTransitionTable, forkDeterminer: ForkDeterminationInfo): HardFork =
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for fork in countdown(HardFork.high, HardFork.low):
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if isGTETransitionThreshold(map, forkDeterminer, fork):
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return fork
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# should always have a match
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doAssert(false, "unreachable code")
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proc validateChainConfig*(conf: ChainConfig): bool =
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result = true
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if conf.mergeNetsplitBlock.isSome:
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# geth compatibility
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conf.mergeForkBlock = conf.mergeNetsplitBlock
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# FIXME: factor this to remove the duplication between the
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# block-based ones and the time-based ones.
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var blockNumberBasedForkOptionals: array[forkBlockField.len, BlockNumberBasedForkOptional]
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fillArrayOfBlockNumberBasedForkOptionals(conf, blockNumberBasedForkOptionals)
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var timeBasedForkOptionals: array[forkTimeField.len, TimeBasedForkOptional]
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fillArrayOfTimeBasedForkOptionals(conf, timeBasedForkOptionals)
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var lastBlockNumberBasedFork = blockNumberBasedForkOptionals[0]
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for i in 1..<blockNumberBasedForkOptionals.len:
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let cur = blockNumberBasedForkOptionals[i]
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if lastBlockNumberBasedFork.number.isSome and cur.number.isSome:
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if lastBlockNumberBasedFork.number.get > cur.number.get:
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error "Unsupported fork ordering",
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lastFork=lastBlockNumberBasedFork.name,
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lastNumber=lastBlockNumberBasedFork.number,
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curFork=cur.name,
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curNumber=cur.number
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return false
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# If it was optional and not set, then ignore it
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if cur.number.isSome:
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lastBlockNumberBasedFork = cur
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# TODO: check to make sure the timestamps are all past the
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# block numbers?
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var lastTimeBasedFork = timeBasedForkOptionals[0]
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for i in 1..<timeBasedForkOptionals.len:
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let cur = timeBasedForkOptionals[i]
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if lastTimeBasedFork.time.isSome and cur.time.isSome:
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if lastTimeBasedFork.time.get > cur.time.get:
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error "Unsupported fork ordering",
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lastFork=lastTimeBasedFork.name,
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lastTime=lastTimeBasedFork.time,
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curFork=cur.name,
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curTime=cur.time
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return false
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# If it was optional and not set, then ignore it
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if cur.time.isSome:
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lastTimeBasedFork = cur
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if conf.clique.period.isSome or
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conf.clique.epoch.isSome:
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conf.consensusType = ConsensusType.POA
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proc parseGenesis*(data: string): Genesis
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{.gcsafe.} =
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try:
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result = Json.decode(data, Genesis, allowUnknownFields = true)
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except JsonReaderError as e:
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error "Invalid genesis config file format", msg=e.formatMsg("")
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return nil
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except CatchableError as e:
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error "Error loading genesis data",
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exception = e.name, msg = e.msg
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return nil
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proc parseGenesisFile*(fileName: string): Genesis
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{.gcsafe.} =
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try:
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result = Json.loadFile(fileName, Genesis, allowUnknownFields = true)
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except IOError as e:
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error "Genesis I/O error", fileName, msg=e.msg
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return nil
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except JsonReaderError as e:
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error "Invalid genesis config file format", msg=e.formatMsg("")
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return nil
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except CatchableError as e:
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error "Error loading genesis file",
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fileName, exception = e.name, msg = e.msg
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return nil
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proc validateNetworkParams(params: var NetworkParams, input: string, inputIsFile: bool): bool =
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if params.genesis.isNil:
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# lets try with geth's format
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let genesis = if inputIsFile: parseGenesisFile(input)
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else: parseGenesis(input)
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if genesis.isNil:
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return false
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params.genesis = genesis
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if params.config.isNil:
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warn "Loaded custom network contains no 'config' data"
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params.config = ChainConfig()
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validateChainConfig(params.config)
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proc loadNetworkParams*(fileName: string, params: var NetworkParams):
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bool =
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try:
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params = Json.loadFile(fileName, NetworkParams, allowUnknownFields = true)
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except IOError as e:
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error "Network params I/O error", fileName, msg=e.msg
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return false
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except JsonReaderError as e:
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error "Invalid network params file format", fileName, msg=e.formatMsg("")
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return false
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except CatchableError as e:
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error "Error loading network params file",
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fileName, exception = e.name, msg = e.msg
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return false
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validateNetworkParams(params, fileName, true)
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proc decodeNetworkParams*(jsonString: string, params: var NetworkParams): bool =
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try:
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params = Json.decode(jsonString, NetworkParams, allowUnknownFields = true)
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except JsonReaderError as e:
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error "Invalid network params format", msg=e.formatMsg("")
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return false
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except CatchableError:
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var msg = getCurrentExceptionMsg()
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error "Error decoding network params", msg
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return false
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validateNetworkParams(params, jsonString, false)
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proc parseGenesisAlloc*(data: string, ga: var GenesisAlloc): bool
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{.gcsafe, raises: [CatchableError].} =
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try:
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ga = Json.decode(data, GenesisAlloc, allowUnknownFields = true)
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except JsonReaderError as e:
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error "Invalid genesis config file format", msg=e.formatMsg("")
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return false
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return true
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proc chainConfigForNetwork*(id: NetworkId): ChainConfig =
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# For some public networks, NetworkId and ChainId value are identical
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# but that is not always the case
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result = case id
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of MainNet:
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const mainNetTTD = parse("58750000000000000000000",UInt256)
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ChainConfig(
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consensusType: ConsensusType.POW,
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chainId: MainNet.ChainId,
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# Genesis (Frontier): # 2015-07-30 15:26:13 UTC
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# Frontier Thawing: 200_000.toBlockNumber, # 2015-09-07 21:33:09 UTC
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homesteadBlock: some(1_150_000.toBlockNumber), # 2016-03-14 18:49:53 UTC
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daoForkBlock: some(1_920_000.toBlockNumber), # 2016-07-20 13:20:40 UTC
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daoForkSupport: true,
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eip150Block: some(2_463_000.toBlockNumber), # 2016-10-18 13:19:31 UTC
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eip150Hash: toDigest("2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
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eip155Block: some(2_675_000.toBlockNumber), # Same as EIP-158
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eip158Block: some(2_675_000.toBlockNumber), # 2016-11-22 16:15:44 UTC
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byzantiumBlock: some(4_370_000.toBlockNumber), # 2017-10-16 05:22:11 UTC
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constantinopleBlock: some(7_280_000.toBlockNumber), # Skipped on Mainnet
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petersburgBlock: some(7_280_000.toBlockNumber), # 2019-02-28 19:52:04 UTC
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istanbulBlock: some(9_069_000.toBlockNumber), # 2019-12-08 00:25:09 UTC
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muirGlacierBlock: some(9_200_000.toBlockNumber), # 2020-01-02 08:30:49 UTC
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berlinBlock: some(12_244_000.toBlockNumber), # 2021-04-15 10:07:03 UTC
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londonBlock: some(12_965_000.toBlockNumber), # 2021-08-05 12:33:42 UTC
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arrowGlacierBlock: some(13_773_000.toBlockNumber), # 2021-12-09 19:55:23 UTC
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grayGlacierBlock: some(15_050_000.toBlockNumber), # 2022-06-30 10:54:04 UTC
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terminalTotalDifficulty: some(mainNetTTD),
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shanghaiTime: some(1_681_338_455.EthTime)
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)
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of GoerliNet:
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ChainConfig(
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clique: CliqueOptions(period: some(15), epoch: some(30000)),
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consensusType: ConsensusType.POA,
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chainId: GoerliNet.ChainId,
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# Genesis: # 2015-07-30 15:26:13 UTC
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homesteadBlock: some(0.toBlockNumber), # Included in genesis
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daoForkSupport: false,
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eip150Block: some(0.toBlockNumber), # Included in genesis
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eip150Hash: toDigest("0000000000000000000000000000000000000000000000000000000000000000"),
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eip155Block: some(0.toBlockNumber), # Included in genesis
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eip158Block: some(0.toBlockNumber), # Included in genesis
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byzantiumBlock: some(0.toBlockNumber), # Included in genesis
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constantinopleBlock: some(0.toBlockNumber), # Included in genesis
|
|
petersburgBlock: some(0.toBlockNumber), # Included in genesis
|
|
istanbulBlock: some(1_561_651.toBlockNumber), # 2019-10-30 13:53:05 UTC
|
|
muirGlacierBlock: some(4_460_644.toBlockNumber), # Skipped in Goerli
|
|
berlinBlock: some(4_460_644.toBlockNumber), # 2021-03-18 05:29:51 UTC
|
|
londonBlock: some(5_062_605.toBlockNumber), # 2021-07-01 03:19:39 UTC
|
|
terminalTotalDifficulty: some(10790000.u256),
|
|
shanghaiTime: some(1_678_832_736.EthTime)
|
|
)
|
|
of SepoliaNet:
|
|
const sepoliaTTD = parse("17000000000000000",UInt256)
|
|
ChainConfig(
|
|
consensusType: ConsensusType.POW,
|
|
chainId: SepoliaNet.ChainId,
|
|
homesteadBlock: some(0.toBlockNumber),
|
|
daoForkSupport: false,
|
|
eip150Block: some(0.toBlockNumber),
|
|
eip150Hash: toDigest("0000000000000000000000000000000000000000000000000000000000000000"),
|
|
eip155Block: some(0.toBlockNumber),
|
|
eip158Block: some(0.toBlockNumber),
|
|
byzantiumBlock: some(0.toBlockNumber),
|
|
constantinopleBlock: some(0.toBlockNumber),
|
|
petersburgBlock: some(0.toBlockNumber),
|
|
istanbulBlock: some(0.toBlockNumber),
|
|
muirGlacierBlock: some(0.toBlockNumber),
|
|
berlinBlock: some(0.toBlockNumber),
|
|
londonBlock: some(0.toBlockNumber),
|
|
mergeForkBlock: some(1735371.toBlockNumber),
|
|
terminalTotalDifficulty: some(sepoliaTTD),
|
|
shanghaiTime: some(1_677_557_088.EthTime),
|
|
)
|
|
of HoleskyNet:
|
|
ChainConfig(
|
|
consensusType: ConsensusType.POS,
|
|
chainId: HoleskyNet.ChainId,
|
|
homesteadBlock: some(0.toBlockNumber),
|
|
eip150Block: some(0.toBlockNumber),
|
|
eip155Block: some(0.toBlockNumber),
|
|
eip158Block: some(0.toBlockNumber),
|
|
byzantiumBlock: some(0.toBlockNumber),
|
|
constantinopleBlock: some(0.toBlockNumber),
|
|
petersburgBlock: some(0.toBlockNumber),
|
|
istanbulBlock: some(0.toBlockNumber),
|
|
berlinBlock: some(0.toBlockNumber),
|
|
londonBlock: some(0.toBlockNumber),
|
|
mergeForkBlock: some(0.toBlockNumber),
|
|
terminalTotalDifficulty: some(0.u256),
|
|
terminalTotalDifficultyPassed: some(true),
|
|
shanghaiTime: some(1_696_000_704.EthTime),
|
|
)
|
|
else:
|
|
ChainConfig()
|
|
|
|
proc genesisBlockForNetwork*(id: NetworkId): Genesis
|
|
{.gcsafe, raises: [ValueError, RlpError].} =
|
|
result = case id
|
|
of MainNet:
|
|
Genesis(
|
|
nonce: 66.toBlockNonce,
|
|
extraData: hexToSeqByte("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"),
|
|
gasLimit: 5000,
|
|
difficulty: 17179869184.u256,
|
|
alloc: decodePrealloc(mainnetAllocData)
|
|
)
|
|
of GoerliNet:
|
|
Genesis(
|
|
nonce: 0.toBlockNonce,
|
|
timestamp: EthTime(0x5c51a607),
|
|
extraData: hexToSeqByte("0x22466c6578692069732061207468696e6722202d204166726900000000000000e0a2bd4258d2768837baa26a28fe71dc079f84c70000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
|
|
gasLimit: 0xa00000,
|
|
difficulty: 1.u256,
|
|
alloc: decodePrealloc(goerliAllocData)
|
|
)
|
|
of SepoliaNet:
|
|
Genesis(
|
|
nonce: 0.toBlockNonce,
|
|
timestamp: EthTime(0x6159af19),
|
|
extraData: hexToSeqByte("0x5365706f6c69612c20417468656e732c204174746963612c2047726565636521"),
|
|
gasLimit: 0x1c9c380,
|
|
difficulty: 0x20000.u256,
|
|
alloc: decodePrealloc(sepoliaAllocData)
|
|
)
|
|
of HoleskyNet:
|
|
Genesis(
|
|
difficulty: 0x01.u256,
|
|
gasLimit: 0x17D7840,
|
|
nonce: 0x1234.toBlockNonce,
|
|
timestamp: EthTime(1_695_902_100),
|
|
alloc: decodePrealloc(holeskyAllocData)
|
|
)
|
|
else:
|
|
Genesis()
|
|
|
|
proc networkParams*(id: NetworkId): NetworkParams
|
|
{.gcsafe, raises: [ValueError, RlpError].} =
|
|
result.genesis = genesisBlockForNetwork(id)
|
|
result.config = chainConfigForNetwork(id)
|
|
|
|
proc `==`*(a, b: ChainId): bool =
|
|
a.uint64 == b.uint64
|
|
|
|
proc `==`*(a, b: Genesis): bool =
|
|
if a.isNil and b.isNil: return true
|
|
if a.isNil and not b.isNil: return false
|
|
if not a.isNil and b.isNil: return false
|
|
a[] == b[]
|
|
|
|
proc `==`*(a, b: ChainConfig): bool =
|
|
if a.isNil and b.isNil: return true
|
|
if a.isNil and not b.isNil: return false
|
|
if not a.isNil and b.isNil: return false
|
|
a[] == b[]
|