73 lines
2.3 KiB
Nim
73 lines
2.3 KiB
Nim
# SPDX-FileCopyrightText: ☭ Emery Hemingway
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# SPDX-License-Identifier: Unlicense
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import std/asyncdispatch, asyncnet, net, strutils
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import syndicate
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import getdns
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import ./protocol
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when not defined(posix): {.error: "This utility requires POSIX".}
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proc checkError(r: getdns_return_t) =
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if r.isBad: quit($r, QuitFailure)
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type Client = ref object
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context: SslContext
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socket: AsyncSocket
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proc close(client: Client) =
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try: close(client.socket)
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except CatchableError: discard # stupid
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destroyContext(client.context)
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proc connect(client: Client; jid: string) {.async.} =
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stderr.writeLine "connecting as ", jid
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var domains = rsplit(jid, '@', 1)
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stderr.writeLine "domains is ", $domains
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if domains.len != 2:
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stderr.writeLine "invalid JID ", jid
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raise newException(ValueError, "invalid JID " & jid)
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var serviceProtoName = "_xmpps-client._tcp." & domains[1]
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stderr.writeLine "lookup ", serviceProtoName
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let dns = getdns.newContext(true)
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# defer: context_destroy(dns)
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dns.setResolutionType(GETDNS_RESOLUTION_STUB)
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var response: Dict
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checkError service_sync(dns, serviceProtoName, nil, addr response)
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if response["status"].int != RESPSTATUS_GOOD:
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raise newException(IOError, $response)
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for srvAddr in response["srv_addresses"]:
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wrapSocket(client.context, client.socket)
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try:
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let
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host = srvAddr["domain_name"].bindata.toFqdn
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port = srvAddr["port"].int.Port
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stderr.writeLine "connecting to ", host, ":", port
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await connect(client.socket, host, port)
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stderr.writeLine "successfully connected to ", host, ":", port
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break
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except CatchableError as e:
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stderr.writeLine "failed to connect: ", e.msg
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close(client)
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proc bootClient(turn: var Turn; jid, password: string; ds: Ref): Client =
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result = Client(
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context: newContext(protTLSv1, CVerifyNone),
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socket: newAsyncSocket(),
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)
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asyncCheck(turn, connect(result, jid))
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bootDataspace("main") do (root: Ref; turn: var Turn):
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stderr.writeLine "connectStdio…"
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connectStdio(root, turn)
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stderr.writeLine "stdio connected"
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during(turn, root, ?XmppClient) do (jid: string, password: string, ds: Ref):
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let client = bootClient(turn, jid, password, ds)
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do:
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stderr.writeLine "retracting client"
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close(client)
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runForever()
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{.error: "during clause not active until retraction".}
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