import tables, json, times, strutils, eth/[common, rlp, trie], stint, stew/[byteutils], chronicles, eth/trie/db, db/[db_chain, state_db], genesis_alloc, config, constants type Genesis* = object config*: ChainConfig nonce*: BlockNonce timestamp*: EthTime extraData*: seq[byte] gasLimit*: GasInt difficulty*: DifficultyInt mixhash*: Hash256 coinbase*: EthAddress alloc*: GenesisAlloc GenesisAlloc = TableRef[EthAddress, GenesisAccount] GenesisAccount = object code*: seq[byte] storage*: Table[UInt256, UInt256] balance*: UInt256 nonce*: AccountNonce func toAddress(n: UInt256): EthAddress = let a = n.toByteArrayBE() result[0 .. ^1] = a.toOpenArray(12, a.high) func decodePrealloc(data: seq[byte]): GenesisAlloc = result = newTable[EthAddress, GenesisAccount]() for tup in rlp.decode(data, seq[(UInt256, UInt256)]): result[toAddress(tup[0])] = GenesisAccount(balance: tup[1]) proc customNetPrealloc(genesisBlock: JsonNode): GenesisAlloc = result = newTable[EthAddress, GenesisAccount]() for address, account in genesisBlock.pairs(): var acc = GenesisAccount( balance: fromHex(UInt256, account["balance"].getStr), code: hexToSeqByte(account["code"].getStr), nonce: parseHexInt(account["nonce"].getStr).AccountNonce ) let storage = account["storage"] for k, v in storage: acc.storage[fromHex(UInt256, k)] = fromHex(UInt256, v.getStr) result[parseAddress(address)] = acc proc defaultGenesisBlockForNetwork*(id: PublicNetwork): Genesis = result = case id of MainNet: Genesis( nonce: 66.toBlockNonce, extraData: hexToSeqByte("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"), gasLimit: 5000, difficulty: 17179869184.u256, alloc: decodePrealloc(mainnetAllocData) ) of RopstenNet: Genesis( nonce: 66.toBlockNonce, extraData: hexToSeqByte("0x3535353535353535353535353535353535353535353535353535353535353535"), gasLimit: 16777216, difficulty: 1048576.u256, alloc: decodePrealloc(testnetAllocData) ) of RinkebyNet: Genesis( nonce: 0.toBlockNonce, timestamp: initTime(0x58ee40ba, 0), extraData: hexToSeqByte("0x52657370656374206d7920617574686f7269746168207e452e436172746d616e42eb768f2244c8811c63729a21a3569731535f067ffc57839b00206d1ad20c69a1981b489f772031b279182d99e65703f0076e4812653aab85fca0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), gasLimit: 4700000, difficulty: 1.u256, alloc: decodePrealloc(rinkebyAllocData) ) of GoerliNet: Genesis( nonce: 0.toBlockNonce, timestamp: initTime(0x5c51a607, 0), extraData: hexToSeqByte("0x22466c6578692069732061207468696e6722202d204166726900000000000000e0a2bd4258d2768837baa26a28fe71dc079f84c70000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), gasLimit: 0xa00000, difficulty: 1.u256, alloc: decodePrealloc(goerliAllocData) ) of CustomNet: let genesis = getConfiguration().customGenesis var alloc = new GenesisAlloc if genesis.prealloc != parseJson("{}"): alloc = customNetPrealloc(genesis.prealloc) Genesis( nonce: genesis.nonce, extraData: genesis.extraData, gasLimit: genesis.gasLimit, difficulty: genesis.difficulty, alloc: alloc, timestamp: genesis.timestamp, mixhash: genesis.mixHash, coinbase: genesis.coinbase ) else: # TODO: Fill out the rest error "No default genesis for network", id doAssert(false, "No default genesis for " & $id) Genesis() result.config = publicChainConfig(id) proc toBlock*(g: Genesis, db: BaseChainDB = nil): BlockHeader = let (tdb, pruneTrie) = if db.isNil: (newMemoryDB(), true) else: (db.db, db.pruneTrie) var trie = initHexaryTrie(tdb) var sdb = newAccountStateDB(tdb, trie.rootHash, pruneTrie) for address, account in g.alloc: sdb.setAccount(address, newAccount(account.nonce, account.balance)) sdb.setCode(address, account.code) for k, v in account.storage: sdb.setStorage(address, k, v) var root = sdb.rootHash result = BlockHeader( nonce: g.nonce, timestamp: g.timestamp, extraData: g.extraData, gasLimit: g.gasLimit, difficulty: g.difficulty, mixDigest: g.mixhash, coinbase: g.coinbase, stateRoot: root, parentHash: GENESIS_PARENT_HASH, txRoot: BLANK_ROOT_HASH, receiptRoot: BLANK_ROOT_HASH, ommersHash: EMPTY_UNCLE_HASH ) if g.gasLimit == 0: result.gasLimit = GENESIS_GAS_LIMIT if g.difficulty == 0: result.difficulty = GENESIS_DIFFICULTY proc commit*(g: Genesis, db: BaseChainDB) = let b = g.toBlock(db) doAssert(b.blockNumber == 0, "can't commit genesis block with number > 0") discard db.persistHeaderToDb(b) proc initializeEmptyDb*(db: BaseChainDB) = trace "Writing genesis to DB" let networkId = getConfiguration().net.networkId.toPublicNetwork() # if networkId == CustomNet: # raise newException(Exception, "Custom genesis not implemented") # else: defaultGenesisBlockForNetwork(networkId).commit(db)