You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
403 lines
14 KiB
403 lines
14 KiB
"""
|
|
.. module:: IRCCore
|
|
:synopsis: IRC protocol class
|
|
|
|
.. moduleauthor:: Dave Pedu <dave@davepedu.com>
|
|
|
|
"""
|
|
|
|
import socket
|
|
import asyncio
|
|
import logging
|
|
import traceback
|
|
import sys
|
|
from inspect import getargspec
|
|
from pyircbot.common import burstbucket, parse_irc_line
|
|
from collections import namedtuple
|
|
from io import StringIO
|
|
|
|
IRCEvent = namedtuple("IRCEvent", "command args prefix trailing")
|
|
UserPrefix = namedtuple("UserPrefix", "nick username hostname")
|
|
ServerPrefix = namedtuple("ServerPrefix", "hostname")
|
|
|
|
|
|
class IRCCore(object):
|
|
|
|
def __init__(self, servers, loop, rate_limit=True, rate_max=5.0, rate_int=1.1):
|
|
self._loop = loop
|
|
|
|
# rate limiting options
|
|
self.rate_limit = rate_limit
|
|
self.rate_max = float(rate_max)
|
|
self.rate_int = float(rate_int)
|
|
|
|
self.reconnect_delay = 3.0
|
|
|
|
self.connected = False
|
|
"""If we're connected or not"""
|
|
|
|
self.log = logging.getLogger('IRCCore')
|
|
"""Reference to logger object"""
|
|
|
|
self.buffer = StringIO()
|
|
"""cStringIO used as a buffer"""
|
|
|
|
self.alive = True
|
|
"""True if we should try to stay connected"""
|
|
|
|
self.server = 0
|
|
"""Current server index"""
|
|
self.servers = servers
|
|
"""List of server address"""
|
|
self.port = 0
|
|
"""Server port"""
|
|
self.connection_family = socket.AF_UNSPEC
|
|
"""Socket family. 0 will auto-detect ipv4 or v6. Change this to socket.AF_INET or socket.AF_INET6 force use of
|
|
ipv4 or ipv6."""
|
|
|
|
self.bind_addr = None
|
|
"""Optionally bind to a specific address. This should be a (host, port) tuple."""
|
|
|
|
self.nick = None
|
|
|
|
# Set up hooks for modules
|
|
self.initHooks()
|
|
|
|
self.outseq = 5
|
|
self.outputq = asyncio.PriorityQueue()
|
|
self._loop.call_soon_threadsafe(asyncio.ensure_future, self.outputqueue())
|
|
|
|
async def loop(self, loop):
|
|
while self.alive:
|
|
try:
|
|
# TODO support ipv6 again
|
|
self.reader, self.writer = await asyncio.open_connection(self.servers[self.server][0],
|
|
port=self.servers[self.server][1],
|
|
loop=loop,
|
|
ssl=None,
|
|
family=self.connection_family,
|
|
local_addr=self.bind_addr)
|
|
self.fire_hook("_CONNECT")
|
|
except (socket.gaierror, ConnectionRefusedError):
|
|
traceback.print_exc()
|
|
logging.warning("Non-fatal connect error, trying next server...")
|
|
self.server = (self.server + 1) % len(self.servers)
|
|
await asyncio.sleep(1, loop=loop)
|
|
continue
|
|
while self.alive:
|
|
try:
|
|
data = await self.reader.readuntil()
|
|
self.log.debug("<<< {}".format(repr(data)))
|
|
command, args, prefix, trailing = parse_irc_line(data.decode("UTF-8"))
|
|
self.fire_hook("_RECV", args=args, prefix=prefix, trailing=trailing)
|
|
if command not in self.hookcalls:
|
|
self.log.warning("Unknown command: cmd='{}' prefix='{}' args='{}' trailing='{}'"
|
|
.format(command, prefix, args, trailing))
|
|
else:
|
|
self.fire_hook(command, args=args, prefix=prefix, trailing=trailing)
|
|
except (ConnectionResetError, asyncio.streams.IncompleteReadError):
|
|
traceback.print_exc()
|
|
break
|
|
except (UnicodeDecodeError, ):
|
|
traceback.print_exc()
|
|
self.fire_hook("_DISCONNECT")
|
|
self.writer.close()
|
|
if self.alive:
|
|
# TODO ramp down reconnect attempts
|
|
logging.info("Reconnecting in {}s...".format(self.reconnect_delay))
|
|
await asyncio.sleep(self.reconnect_delay)
|
|
|
|
async def outputqueue(self):
|
|
self.bucket = burstbucket(self.rate_max, self.rate_int)
|
|
while True:
|
|
prio, line = await self.outputq.get()
|
|
# sleep until the bucket allows us to send
|
|
if self.rate_limit:
|
|
while True:
|
|
s = self.bucket.get()
|
|
if s == 0:
|
|
break
|
|
else:
|
|
await asyncio.sleep(s, loop=self._loop)
|
|
self.fire_hook('_SEND', args=None, prefix=None, trailing=None)
|
|
self.log.debug(">>> {}".format(repr(line)))
|
|
self.outputq.task_done()
|
|
try:
|
|
self.writer.write((line + "\r\n").encode("UTF-8"))
|
|
except Exception as e: # Probably fine if we drop messages while offline
|
|
print(e)
|
|
print(self.trace())
|
|
|
|
async def kill(self, message="Help! Another thread is killing me :(", forever=True):
|
|
"""Send quit message, flush queue, and close the socket
|
|
|
|
:param message: Quit message to send before disconnecting
|
|
:type message: str
|
|
"""
|
|
if forever:
|
|
self.alive = False
|
|
self.act_QUIT(message) # TODO will this hang if the socket is having issues?
|
|
await self.writer.drain()
|
|
self.writer.close()
|
|
self.log.info("Kill complete")
|
|
|
|
def sendRaw(self, data, priority=None):
|
|
"""
|
|
Send data on the wire. Lower priorities are sent first.
|
|
:param data: unicode data to send. will be converted to utf-8
|
|
:param priority: numerical priority value. If not None, the message will likely be sent first. Otherwise, an
|
|
ever-increasing sequence number is used to maintain order. For a minimum priority message,
|
|
use a priority value of sys.maxsize.
|
|
"""
|
|
if priority is None:
|
|
self.outseq += 1
|
|
priority = self.outseq
|
|
asyncio.run_coroutine_threadsafe(self.outputq.put((priority, data, )), self._loop)
|
|
|
|
" Module related code "
|
|
def initHooks(self):
|
|
"""Defines hooks that modules can listen for events of"""
|
|
self.hooks = [
|
|
'_ALL',
|
|
'_CONNECT',
|
|
'_DISCONNECT',
|
|
'_RECV',
|
|
'_SEND',
|
|
'NOTICE',
|
|
'MODE',
|
|
'PING',
|
|
'JOIN',
|
|
'QUIT',
|
|
'NICK',
|
|
'PART',
|
|
'PRIVMSG',
|
|
'KICK',
|
|
'INVITE',
|
|
'001',
|
|
'002',
|
|
'003',
|
|
'004',
|
|
'005',
|
|
'250',
|
|
'251',
|
|
'252',
|
|
'254',
|
|
'255',
|
|
'265',
|
|
'266',
|
|
'331',
|
|
'332',
|
|
'333',
|
|
'353',
|
|
'366',
|
|
'372',
|
|
'375',
|
|
'376',
|
|
'401',
|
|
'422',
|
|
'433',
|
|
]
|
|
" mapping of hooks to methods "
|
|
self.hookcalls = {command: [] for command in self.hooks}
|
|
|
|
def fire_hook(self, command, args=None, prefix=None, trailing=None):
|
|
"""Run any listeners for a specific hook
|
|
|
|
:param command: the hook to fire
|
|
:type command: str
|
|
:param args: the list of arguments, if any, the command was passed
|
|
:type args: list
|
|
:param prefix: prefix of the sender of this command
|
|
:type prefix: str
|
|
:param trailing: data payload of the command
|
|
:type trailing: str"""
|
|
for hook in self.hookcalls["_ALL"] + self.hookcalls[command]:
|
|
try:
|
|
if len(getargspec(hook).args) == 2:
|
|
hook(IRCCore.packetAsObject(command, args, prefix, trailing))
|
|
else:
|
|
hook(args, prefix, trailing)
|
|
|
|
except:
|
|
self.log.warning("Error processing hook: \n%s" % self.trace())
|
|
|
|
def addHook(self, command, method):
|
|
"""**Internal.** Enable (connect) a single hook of a module
|
|
|
|
:param command: command this hook will trigger on
|
|
:type command: str
|
|
:param method: callable method object to hook in
|
|
:type method: object"""
|
|
" add a single hook "
|
|
if command in self.hooks:
|
|
self.hookcalls[command].append(method)
|
|
else:
|
|
self.log.warning("Invalid hook - %s" % command)
|
|
return False
|
|
|
|
def removeHook(self, command, method):
|
|
"""**Internal.** Disable (disconnect) a single hook of a module
|
|
|
|
:param command: command this hook triggers on
|
|
:type command: str
|
|
:param method: callable method that should be removed
|
|
:type method: object"""
|
|
" remove a single hook "
|
|
if command in self.hooks:
|
|
for hookedMethod in self.hookcalls[command]:
|
|
if hookedMethod == method:
|
|
self.hookcalls[command].remove(hookedMethod)
|
|
else:
|
|
self.log.warning("Invalid hook - %s" % command)
|
|
return False
|
|
|
|
def packetAsObject(command, args, prefix, trailing):
|
|
"""Given an irc message's args, prefix, and trailing data return an object with these properties
|
|
|
|
:param args: list of args from the IRC packet
|
|
:type args: list
|
|
:param prefix: prefix object parsed from the IRC packet
|
|
:type prefix: ServerPrefix or UserPrefix
|
|
:param trailing: trailing data from the IRC packet
|
|
:type trailing: str
|
|
:returns: object -- a IRCEvent object with the ``args``, ``prefix``, ``trailing``"""
|
|
|
|
return IRCEvent(command, args,
|
|
IRCCore.decodePrefix(prefix) if prefix else None,
|
|
trailing)
|
|
|
|
" Utility methods "
|
|
@staticmethod
|
|
def decodePrefix(prefix):
|
|
"""Given a prefix like nick!username@hostname, return an object with these properties
|
|
|
|
:param prefix: the prefix to disassemble
|
|
:type prefix: str
|
|
:returns: object -- an UserPrefix object with the properties `nick`, `username`, `hostname` or a ServerPrefix
|
|
object with the property `hostname`
|
|
"""
|
|
if "!" in prefix:
|
|
nick, prefix = prefix.split("!")
|
|
username, hostname = prefix.split("@")
|
|
return UserPrefix(nick, username, hostname)
|
|
else:
|
|
return ServerPrefix(prefix)
|
|
|
|
@staticmethod
|
|
def trace():
|
|
"""Return the stack trace of the bot as a string"""
|
|
return traceback.format_exc()
|
|
|
|
@staticmethod
|
|
def fulltrace():
|
|
"""Return the stack trace of the bot as a string"""
|
|
result = ""
|
|
result += "\n*** STACKTRACE - START ***\n"
|
|
code = []
|
|
for threadId, stack in sys._current_frames().items():
|
|
code.append("\n# ThreadID: %s" % threadId)
|
|
for filename, lineno, name, line in traceback.extract_stack(stack):
|
|
code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
|
|
if line:
|
|
code.append(" %s" % (line.strip()))
|
|
for line in code:
|
|
result += line + "\n"
|
|
result += "\n*** STACKTRACE - END ***\n"
|
|
return result
|
|
|
|
" Data Methods "
|
|
def get_nick(self):
|
|
"""Get the bot's current nick
|
|
|
|
:returns: str - the bot's current nickname"""
|
|
return self.nick
|
|
|
|
" Action Methods "
|
|
def act_PONG(self, data):
|
|
"""Use the `/pong` command - respond to server pings
|
|
|
|
:param data: the string or number the server sent with it's ping
|
|
:type data: str"""
|
|
self.sendRaw("PONG :%s" % data)
|
|
|
|
def act_USER(self, username, hostname, realname, priority=2):
|
|
"""Use the USER protocol command. Used during connection
|
|
|
|
:param username: the bot's username
|
|
:type username: str
|
|
:param hostname: the bot's hostname
|
|
:type hostname: str
|
|
:param realname: the bot's realname
|
|
:type realname: str"""
|
|
self.sendRaw("USER %s %s %s :%s" % (username, hostname, self.servers[self.server], realname), priority)
|
|
|
|
def act_NICK(self, newNick, priority=2):
|
|
"""Use the `/nick` command
|
|
|
|
:param newNick: new nick for the bot
|
|
:type newNick: str"""
|
|
self.nick = newNick
|
|
self.sendRaw("NICK %s" % newNick, priority)
|
|
|
|
def act_JOIN(self, channel, priority=3):
|
|
"""Use the `/join` command
|
|
|
|
:param channel: the channel to attempt to join
|
|
:type channel: str"""
|
|
self.sendRaw("JOIN %s" % channel, priority=3)
|
|
|
|
def act_PRIVMSG(self, towho, message):
|
|
"""Use the `/msg` command
|
|
|
|
:param towho: the target #channel or user's name
|
|
:type towho: str
|
|
:param message: the message to send
|
|
:type message: str"""
|
|
self.sendRaw("PRIVMSG %s :%s" % (towho, message))
|
|
|
|
def act_MODE(self, channel, mode, extra=None):
|
|
"""Use the `/mode` command
|
|
|
|
:param channel: the channel this mode is for
|
|
:type channel: str
|
|
:param mode: the mode string. Example: +b
|
|
:type mode: str
|
|
:param extra: additional argument if the mode needs it. Example: user@*!*
|
|
:type extra: str"""
|
|
if extra is not None:
|
|
self.sendRaw("MODE %s %s %s" % (channel, mode, extra))
|
|
else:
|
|
self.sendRaw("MODE %s %s" % (channel, mode))
|
|
|
|
def act_ACTION(self, channel, action):
|
|
"""Use the `/me <action>` command
|
|
|
|
:param channel: the channel name or target's name the message is sent to
|
|
:type channel: str
|
|
:param action: the text to send
|
|
:type action: str"""
|
|
self.sendRaw("PRIVMSG %s :\x01ACTION %s" % (channel, action))
|
|
|
|
def act_KICK(self, channel, who, comment=""):
|
|
"""Use the `/kick <user> <message>` command
|
|
|
|
:param channel: the channel from which the user will be kicked
|
|
:type channel: str
|
|
:param who: the nickname of the user to kick
|
|
:type action: str
|
|
:param comment: the kick message
|
|
:type comment: str"""
|
|
self.sendRaw("KICK %s %s :%s" % (channel, who, comment))
|
|
|
|
def act_QUIT(self, message, priority=2):
|
|
"""Use the `/quit` command
|
|
|
|
:param message: quit message
|
|
:type message: str"""
|
|
self.sendRaw("QUIT :%s" % message, priority)
|
|
|
|
def act_PASS(self, password):
|
|
"""
|
|
Send server password, for use on connection
|
|
"""
|
|
self.sendRaw("PASS %s" % password)
|
|
|