Files
darkfi/bin/darkirc/script/meetbot.py
2023-04-25 00:22:44 +03:00

250 lines
9.1 KiB
Python
Executable File

#!/usr/bin/env python3
import asyncio
import logging
import pickle
from base58 import b58decode
from nacl.public import PrivateKey, Box
from meetbot_cfg import config
# Initialized channels from the configuration
CHANS = {}
# Pickle DB
PICKLE_DB = "meetbot.pickle"
# TODO: while this is nice to support, it would perhaps be better to do it
# all over the same connection rather than opening a socket for each channel.
async def channel_listen(host, port, nick, chan):
try:
logging.info("%s: Connecting to %s:%s", chan, host, port)
reader, writer = await asyncio.open_connection(host, port)
logging.debug("%s: Send CAP msg", chan)
msg = "CAP REQ : no-history\r\n"
writer.write(msg.encode("utf-8"))
await writer.drain()
logging.debug("%s: Send NICK msg", chan)
msg = f"NICK {nick}\r\n"
writer.write(msg.encode("utf-8"))
await writer.drain()
logging.debug("%s: Send CAP END msg", chan)
msg = "CAP END\r\n"
writer.write(msg.encode("utf-8"))
await writer.drain()
logging.debug("%s: Send JOIN msg", chan)
msg = f"JOIN {chan}\r\n"
writer.write(msg.encode("utf-8"))
await writer.drain()
logging.info("%s: Listening to channel", chan)
while True:
msg = await reader.readline()
msg = msg.decode("utf8")
if not msg:
continue
split_msg = msg.split(" ")
command = split_msg[1]
nick_c = split_msg[0][1:].rsplit("!", 1)[0]
logging.debug("%s: Recv: %s", chan, msg.rstrip())
if command == "PRIVMSG":
msg_title = msg.split(" ")[3][1:].rstrip()
if not msg_title:
logging.info("%s: Recv empty PRIVMSG, ignoring", chan)
continue
if msg_title == "!start":
logging.info("%s: Got !start", chan)
topics = CHANS[chan]["topics"]
reply = f"PRIVMSG {chan} :Meeting started"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
if len(topics) == 0:
reply = f"PRIVMSG {chan} :No topics"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
continue
reply = f"PRIVMSG {chan} :Topics:"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
for i, topic in enumerate(topics):
reply = f"PRIVMSG {chan} :{i+1}. {topic}"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
cur_topic = topics.pop(0)
reply = f"PRIVMSG {chan} :Current topic: {cur_topic}\r\n"
CHANS[chan]["topics"] = topics
writer.write(reply.encode("utf-8"))
await writer.drain()
continue
if msg_title == "!end":
logging.info("%s: Got !end", chan)
reply = f"PRIVMSG {chan} :Meeting ended"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
continue
if msg_title == "!topic":
logging.info("%s: Got !topic", chan)
topic = msg.split(" ", 4)
if len(topic) != 5:
logging.debug("%s: Topic msg len not 5, skipping",
chan)
continue
topic = topic[4].rstrip() + f" (by {nick_c})"
if topic == "":
logging.debug("%s: Topic message empty, skipping",
chan)
continue
topics = CHANS[chan]["topics"]
if topic not in topics:
topics.append(topic)
CHANS[chan]["topics"] = topics
logging.debug("%s: Appended topic to channel topics",
chan)
reply = f"PRIVMSG {chan} :Added topic: {topic}"
logging.info("%s: Send: %s", chan, reply)
else:
logging.debug("%s: Topic already in list of topics",
chan)
reply = f"PRIVMSG {chan} :Topic already in list"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
continue
if msg_title == "!list":
logging.info("%s: Got !list", chan)
topics = CHANS[chan]["topics"]
if len(topics) == 0:
reply = f"PRIVMSG {chan} :No topics"
else:
reply = f"PRIVMSG {chan} :Topics:"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
for i, topic in enumerate(topics):
reply = f"PRIVMSG {chan} :{i+1}. {topic}"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
continue
if msg_title == "!next":
logging.info("%s: Got !next", chan)
topics = CHANS[chan]["topics"]
if len(topics) == 0:
reply = f"PRIVMSG {chan} :No further topics"
else:
cur_topic = topics.pop(0)
CHANS[chan]["topics"] = topics
reply = f"PRIVMSG {chan} :Current topic: {cur_topic}"
logging.info("%s: Send: %s", chan, reply)
writer.write((reply + "\r\n").encode("utf-8"))
await writer.drain()
continue
except KeyboardInterrupt:
return
except ConnectionRefusedError:
logging.warning("%s: Connection refused, trying again in 3s...", chan)
await asyncio.sleep(3)
await channel_listen(host, port, nick, chan)
except Exception as e:
logging.error("EXCEPTION: %s", e)
logging.warn("%s: Connection interrupted. Reconnecting in 3s...", chan)
await asyncio.sleep(3)
await channel_listen(host, port, nick, chan)
async def main(debug=False):
global CHANS
loglevel = logging.DEBUG if debug else logging.INFO
logfmt = "%(asctime)s [%(levelname)s]\t%(message)s"
logging.basicConfig(format=logfmt,
level=loglevel,
datefmt="%Y-%m-%d %H:%M:%S")
try:
with open(PICKLE_DB, "rb") as pickle_fd:
CHANS = pickle.load(pickle_fd)
logging.info("Loaded pickle database")
except:
logging.info("Did not find pickle database")
for i in config["channels"]:
name = i["name"]
logging.info("Found config for channel %s", name)
# TODO: This will be useful when ircd has a CAP that tells it to
# give **all** messages to the connected client, no matter if ircd
# itself has a configured secret or not.
# This way the ircd itself doesn't have to keep channel secrets, but
# they can rather only be held by this bot. In turn this means the bot
# can be deployed with any ircd.
if i["secret"]:
logging.info("Instantiating NaCl box for %s", name)
secret = b58decode(i["secret"].encode("utf-8"))
secret = PrivateKey(secret)
public = secret.public_key
box = Box(secret, public)
else:
box = None
if not CHANS.get(name):
CHANS[name] = {}
if not CHANS[name].get("topics"):
CHANS[name]["topics"] = []
CHANS[name]["box"] = box
coroutines = []
for i in CHANS.keys():
logging.debug("Creating async task for %s", i)
task = asyncio.create_task(
channel_listen(config["host"], config["port"], config["nick"], i))
coroutines.append(task)
await asyncio.gather(*coroutines)
if __name__ == "__main__":
from sys import argv
DBG = bool(len(argv) == 2 and argv[1] == "-v")
try:
asyncio.run(main(debug=DBG))
except KeyboardInterrupt:
print("\rCaught ^C, saving pickle and exiting")
with open(PICKLE_DB, "wb") as fdesc:
pickle.dump(CHANS, fdesc, protocol=pickle.HIGHEST_PROTOCOL)