191 lines
6.5 KiB
Nim
191 lines
6.5 KiB
Nim
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# Nimbus
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# Copyright (c) 2021 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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import
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std/[tables, strutils, options, times],
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eth/[common, rlp], stint, stew/[byteutils],
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nimcrypto/hash,
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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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type
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ChainOptions = object
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chainId : ChainId
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homesteadBlock : Option[BlockNumber]
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daoForkBlock : Option[BlockNumber]
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daoForkSupport : bool
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eip150Block : Option[BlockNumber]
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eip150Hash : Hash256
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eip155Block : Option[BlockNumber]
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eip158Block : Option[BlockNumber]
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byzantiumBlock : Option[BlockNumber]
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constantinopleBlock: Option[BlockNumber]
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petersburgBlock : Option[BlockNumber]
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istanbulBlock : Option[BlockNumber]
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muirGlacierBlock : Option[BlockNumber]
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berlinBlock : Option[BlockNumber]
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ChainConfig* = object
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chainId* : ChainId
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homesteadBlock* : BlockNumber
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daoForkBlock* : BlockNumber
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daoForkSupport* : bool
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# EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
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eip150Block* : BlockNumber
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eip150Hash* : Hash256
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eip155Block* : BlockNumber
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eip158Block* : BlockNumber
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byzantiumBlock* : BlockNumber
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constantinopleBlock*: BlockNumber
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petersburgBlock* : BlockNumber
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istanbulBlock* : BlockNumber
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muirGlacierBlock* : BlockNumber
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berlinBlock* : BlockNumber
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Genesis* = object
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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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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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CustomGenesis* = object
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config* : ChainConfig
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genesis*: Genesis
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AddressBalance = object
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address {.rlpCustomSerialization.}: EthAddress
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account {.rlpCustomSerialization.}: GenesisAccount
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CustomChain = object
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config : ChainOptions
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genesis: Genesis
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proc read(rlp: var Rlp, x: var AddressBalance, _: type EthAddress): EthAddress {.inline.} =
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let val = rlp.read(UInt256).toByteArrayBE()
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result[0 .. ^1] = val.toOpenArray(12, val.high)
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proc read(rlp: var Rlp, x: var AddressBalance, _: type GenesisAccount): GenesisAccount {.inline.} =
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GenesisAccount(balance: rlp.read(UInt256))
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func decodePrealloc*(data: seq[byte]): GenesisAlloc =
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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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proc readValue(reader: var JsonReader, value: var BlockNumber) =
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let tok = reader.lexer.tok
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if tok == tkInt:
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value = toBlockNumber(reader.lexer.absintVal)
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reader.lexer.next()
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elif tok == tkString:
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value = UInt256.fromHex(reader.lexer.strVal)
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reader.lexer.next()
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else:
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reader.raiseUnexpectedValue("expect int or hex string")
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proc readValue(reader: var JsonReader, value: var ChainId) =
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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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value = Hash256.fromHex(reader.readValue(string))
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proc readValue(reader: var JsonReader, value: var BlockNonce) =
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value = fromHex[uint64](reader.readValue(string)).toBlockNonce
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proc readValue(reader: var JsonReader, value: var EthTime) =
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value = fromHex[int64](reader.readValue(string)).fromUnix
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proc readValue(reader: var JsonReader, value: var seq[byte]) =
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value = hexToSeqByte(reader.readValue(string))
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proc readValue(reader: var JsonReader, value: var GasInt) =
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value = fromHex[GasInt](reader.readValue(string))
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proc readValue(reader: var JsonReader, value: var EthAddress) =
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value = parseAddress(reader.readValue(string))
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proc readValue(reader: var JsonReader, value: var AccountNonce) =
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value = fromHex[uint64](reader.readValue(string))
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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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proc loadCustomGenesis*(fileName: string, cg: var CustomGenesis): bool =
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var cc: CustomChain
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try:
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cc = Json.loadFile(fileName, CustomChain, allowUnknownFields = true)
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except IOError as e:
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error "Genesis config file 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 genesis config file format", fileName, msg=e.formatMsg("")
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return false
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except:
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var msg = getCurrentExceptionMsg()
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error "Error loading genesis block config file", fileName, msg
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return false
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cg.genesis = cc.genesis
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cg.config.chainId = cc.config.chainId
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cg.config.daoForkSupport = cc.config.daoForkSupport
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cg.config.eip150Hash = cc.config.eip150Hash
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template validateFork(forkName: untyped, nextBlock: BlockNumber) =
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let fork = astToStr(forkName)
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if cc.config.forkName.isSome:
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cg.config.forkName = cc.config.forkName.get()
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else:
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cg.config.forkName = nextBlock
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if cg.config.forkName > nextBlock:
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error "Forks can't be assigned out of order", fork=fork
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return false
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validateFork(berlinBlock, high(BlockNumber).toBlockNumber)
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validateFork(muirGlacierBlock, cg.config.berlinBlock)
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validateFork(istanbulBlock, cg.config.muirGlacierBlock)
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validateFork(petersburgBlock, cg.config.istanbulBlock)
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validateFork(constantinopleBlock, cg.config.petersburgBlock)
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validateFork(byzantiumBlock, cg.config.constantinopleBlock)
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validateFork(eip158Block, cg.config.byzantiumBlock)
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validateFork(eip155Block, cg.config.eip158Block)
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validateFork(eip150Block, cg.config.eip155Block)
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validateFork(daoForkBlock, cg.config.eip150Block)
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validateFork(homesteadBlock, cg.config.daoForkBlock)
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return true
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proc parseGenesisAlloc*(data: string, ga: var GenesisAlloc): bool =
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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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