mirror of https://github.com/status-im/nim-eth.git
60 lines
1.5 KiB
Nim
60 lines
1.5 KiB
Nim
import
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std/[net, hashes], nimcrypto, stint, chronos,
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eth/keys, enr
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{.push raises: [Defect].}
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type
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NodeId* = UInt256
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Address* = object
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ip*: IpAddress
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port*: Port
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Node* = ref object
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id*: NodeId
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pubkey*: PublicKey
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address*: Option[Address]
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record*: Record
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proc toNodeId*(pk: PublicKey): NodeId =
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readUintBE[256](keccak256.digest(pk.toRaw()).data)
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proc newNode*(r: Record): Result[Node, cstring] =
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# TODO: Handle IPv6
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let pk = r.get(PublicKey)
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# This check is redundant as the deserialisation of `Record` will already fail
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# at `verifySignature` if there is no public key
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if pk.isNone():
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return err("Could not recover public key from ENR")
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let tr = ? r.toTypedRecord()
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if tr.ip.isSome() and tr.udp.isSome():
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let
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ip = IpAddress(family: IpAddressFamily.IPv4, address_v4: tr.ip.get())
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a = Address(ip: ip, port: Port(tr.udp.get()))
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ok(Node(id: pk.get().toNodeId(), pubkey: pk.get() , record: r,
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address: some(a)))
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else:
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ok(Node(id: pk.get().toNodeId(), pubkey: pk.get(), record: r,
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address: none(Address)))
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proc hash*(n: Node): hashes.Hash = hash(n.pubkey.toRaw)
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proc `==`*(a, b: Node): bool =
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(a.isNil and b.isNil) or
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(not a.isNil and not b.isNil and a.pubkey == b.pubkey)
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proc `$`*(a: Address): string =
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result.add($a.ip)
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result.add(":" & $a.port)
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proc `$`*(n: Node): string =
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if n == nil:
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"Node[uninitialized]"
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elif n.address.isNone():
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"Node[unaddressable]"
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else:
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"Node[" & $n.address.get().ip & ":" & $n.address.get().port & "]"
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