import json, strutils, times, options, os, eth/[rlp, common], httputils, nimcrypto/utils, stint, stew/byteutils import ../nimbus/transaction, ../nimbus/utils/ec_recover from ../nimbus/rpc/hexstrings import encodeQuantity func hexToInt*(s: string, T: typedesc[SomeInteger]): T = var i = 0 if s[i] == '0' and (s[i+1] in {'x', 'X'}): inc(i, 2) if s.len - i > sizeof(T) * 2: raise newException(ValueError, "input hex too big for destination int") while i < s.len: result = result shl 4 or readHexChar(s[i]).T inc(i) proc prefixHex*(x: Hash256): string = "0x" & toLowerAscii($x) proc prefixHex*(x: int64 | uint64 | byte | int): string = toLowerAscii(encodeQuantity(x.uint64).string) proc prefixHex*(x: openArray[byte]): string = "0x" & toHex(x, true) proc prefixHex*(x: UInt256): string = "0x" & stint.toHex(x) proc prefixHex*(x: string): string = "0x" & toLowerAscii(x) type SomeData* = EthAddress | BloomFilter | BlockNonce proc fromJson*(n: JsonNode, name: string, x: var SomeData) = let node = n[name] if node.kind == JString: hexToByteArray(node.getStr(), x) doAssert(x.prefixHex == toLowerAscii(node.getStr()), name) else: hexToByteArray(node["value"].getStr(), x) doAssert(x.prefixHex == toLowerAscii(node["value"].getStr()), name) proc fromJson*(n: JsonNode, name: string, x: var Hash256) = let node = n[name] if node.kind == JString: hexToByteArray(node.getStr(), x.data) doAssert(x.prefixHex == toLowerAscii(node.getStr()), name) else: hexToByteArray(node["value"].getStr(), x.data) doAssert(x.prefixHex == toLowerAscii(node["value"].getStr()), name) proc fromJson*(n: JsonNode, name: string, x: var Blob) = x = hexToSeqByte(n[name].getStr()) doAssert(x.prefixHex == toLowerAscii(n[name].getStr()), name) proc fromJson*(n: JsonNode, name: string, x: var UInt256) = let node = n[name] if node.kind == JString: x = UInt256.fromHex(node.getStr()) doAssert(x.prefixHex == toLowerAscii(node.getStr()), name) else: x = node.getInt().u256 doAssert($x == $node.getInt, name) proc fromJson*(n: JsonNode, name: string, x: var SomeInteger) = let node = n[name] if node.kind == JString: x = hexToInt(node.getStr(), type(x)) doAssert(x.prefixHex == toLowerAscii(node.getStr()), name) else: type T = type x x = T(node.getInt) doAssert($x == $node.getInt, name) proc fromJson*(n: JsonNode, name: string, x: var EthTime) = x = initTime(hexToInt(n[name].getStr(), int64), 0) doAssert(x.toUnix.prefixHex == toLowerAscii(n[name].getStr()), name) proc fromJson*[T](n: JsonNode, name: string, x: var Option[T]) = if name in n: var val: T n.fromJson(name, val) x = some(val) proc fromJson*(n: JsonNode, name: string, x: var TxType) = let node = n[name] if node.kind == JInt: x = TxType(node.getInt) else: x = hexToInt(node.getStr(), int).TxType proc parseBlockHeader*(n: JsonNode): BlockHeader = n.fromJson "parentHash", result.parentHash n.fromJson "sha3Uncles", result.ommersHash n.fromJson "miner", result.coinbase n.fromJson "stateRoot", result.stateRoot n.fromJson "transactionsRoot", result.txRoot n.fromJson "receiptsRoot", result.receiptRoot n.fromJson "logsBloom", result.bloom n.fromJson "difficulty", result.difficulty n.fromJson "number", result.blockNumber n.fromJson "gasLimit", result.gasLimit n.fromJson "gasUsed", result.gasUsed n.fromJson "timestamp", result.timestamp n.fromJson "extraData", result.extraData n.fromJson "mixHash", result.mixDigest n.fromJson "nonce", result.nonce n.fromJson "baseFeePerGas", result.fee if result.baseFee == 0.u256: # probably geth bug result.fee = none(UInt256) proc parseAccessPair(n: JsonNode): AccessPair = n.fromJson "address", result.address let keys = n["storageKeys"] for kn in keys: result.storageKeys.add hexToByteArray[32](kn.getStr()) proc parseTransaction*(n: JsonNode): Transaction = var tx = Transaction(txType: TxLegacy) n.fromJson "nonce", tx.nonce n.fromJson "gasPrice", tx.gasPrice n.fromJson "gas", tx.gasLimit if n["to"].kind != JNull: var to: EthAddress n.fromJson "to", to tx.to = some(to) n.fromJson "value", tx.value n.fromJson "input", tx.payload n.fromJson "v", tx.V n.fromJson "r", tx.R n.fromJson "s", tx.S if n.hasKey("type") and n["type"].kind != JNull: n.fromJson "type", tx.txType if tx.txType >= TxEip1559: n.fromJson "maxPriorityFeePerGas", tx.maxPriorityFee n.fromJson "maxFeePerGas", tx.maxFee if tx.txType >= TxEip2930: if n.hasKey("chainId"): let id = hexToInt(n["chainId"].getStr(), int) tx.chainId = ChainId(id) let accessList = n["accessList"] if accessList.len > 0: for acn in accessList: tx.accessList.add parseAccessPair(acn) tx proc validateTxSenderAndHash*(n: JsonNode, tx: Transaction) = var sender = tx.getSender() var fromAddr: EthAddress n.fromJson "from", fromAddr doAssert sender.prefixHex == fromAddr.prefixHex doAssert n["hash"].getStr() == tx.rlpHash().prefixHex proc parseLog(n: JsonNode): Log = n.fromJson "address", result.address n.fromJson "data", result.data let topics = n["topics"] result.topics = newSeqOfCap[Topic](n.len) var topicHash: Topic for tp in topics: hexToByteArray(tp.getStr(), topicHash) result.topics.add topicHash proc parseLogs(n: JsonNode): seq[Log] = if n.len > 0: result = newSeqOfCap[Log](n.len) for log in n: result.add parseLog(log) else: result = @[] proc parseReceipt*(n: JsonNode): Receipt = var rec = Receipt(receiptType: LegacyReceipt) if n.hasKey("root"): var hash: Hash256 n.fromJson "root", hash rec.isHash = true rec.hash = hash else: var status: int n.fromJson "status", status rec.isHash = false rec.status = status == 1 n.fromJson "cumulativeGasUsed", rec.cumulativeGasUsed n.fromJson "logsBloom", rec.bloom rec.logs = parseLogs(n["logs"]) rec proc headerHash*(n: JsonNode): Hash256 = n.fromJson "hash", result proc parseAccount*(n: JsonNode): Account = n.fromJson "nonce", result.nonce n.fromJson "balance", result.balance n.fromJson "storageRoot", result.storageRoot n.fromJson "codeHash", result.codeHash