[#203] Added IRC integration

CHANGELOG.md

@@ -7,10 +7,12 @@ Given the high speed of development in the first phase, changes are being report
 
 ### Added
 
-- Added Mastodon integration.
+- Added `mastodon` plugin.
+- Added `chat.irc` plugin.
 
 ### Fixed
 
+- Fixed `switchbot.status` method in case of virtual devices.
 - Fixed `switchbot.status` method in case of virtual devices.
 
 ## [0.22.4] - 2021-10-19

docs/source/conf.py

@@ -281,6 +281,12 @@ autodoc_mock_imports = ['googlesamples.assistant.grpc.audio_helpers',
                         'aiohttp',
                         'watchdog',
                         'pyngrok',
+                        'irc',
+                        'irc.bot',
+                        'irc.strings',
+                        'irc.client',
+                        'irc.connection',
+                        'irc.events',
                         ]
 
 sys.path.insert(0, os.path.abspath('../..'))

docs/source/events.rst

@@ -32,6 +32,7 @@ Events
     platypush/events/http.hook.rst
     platypush/events/http.rss.rst
     platypush/events/inotify.rst
+    platypush/events/irc.rst
     platypush/events/joystick.rst
     platypush/events/kafka.rst
     platypush/events/light.rst

docs/source/platypush/events/irc.rst

@@ -0,0 +1,5 @@
+``platypush.message.event.irc``
+===============================
+
+.. automodule:: platypush.message.event.irc
+    :members:

docs/source/platypush/plugins/chat.irc.rst

@@ -0,0 +1,5 @@
+``chat.irc``
+============
+
+.. automodule:: platypush.plugins.chat.irc
+    :members:

docs/source/plugins.rst

@@ -23,6 +23,7 @@ Plugins
     platypush/plugins/camera.gstreamer.rst
     platypush/plugins/camera.ir.mlx90640.rst
     platypush/plugins/camera.pi.rst
+    platypush/plugins/chat.irc.rst
     platypush/plugins/chat.telegram.rst
     platypush/plugins/clipboard.rst
     platypush/plugins/config.rst

platypush/message/event/__init__.py

@@ -39,7 +39,9 @@ class Event(Message):
         self.disable_web_clients_notification = disable_web_clients_notification
 
         for arg, value in self.args.items():
-            if arg != 'args':
+            if arg not in [
+                'id', 'args', 'origin', 'target', 'type', 'timestamp', 'disable_logging'
+            ] and not arg.startswith('_'):
                 self.__setattr__(arg, value)
 
     @classmethod

platypush/message/event/irc.py

@@ -0,0 +1,184 @@
+from abc import ABC
+from base64 import b64encode
+from typing import Optional
+
+from platypush.message.event import Event
+
+
+class IRCEvent(Event, ABC):
+    """
+    IRC base event.
+    """
+    def __init__(self, *args, server: Optional[str] = None, port: Optional[int] = None,
+                 alias: Optional[str] = None, channel: Optional[str] = None, **kwargs):
+        super().__init__(*args, server=server, port=port, alias=alias, channel=channel, **kwargs)
+
+
+class IRCChannelJoinEvent(IRCEvent):
+    """
+    Event triggered upon account channel join.
+    """
+    def __init__(self, *args, nick: str, **kwargs):
+        super().__init__(*args, nick=nick, **kwargs)
+
+
+class IRCChannelKickEvent(IRCEvent):
+    """
+    Event triggered upon account channel kick.
+    """
+    def __init__(self, *args, target_nick: str, source_nick: Optional[str] = None, **kwargs):
+        super().__init__(*args, source_nick=source_nick, target_nick=target_nick, **kwargs)
+
+
+class IRCModeEvent(IRCEvent):
+    """
+    Event triggered when the IRC mode of a channel user changes.
+    """
+    def __init__(
+            self, *args, mode: str, channel: Optional[str] = None,
+            source: Optional[str] = None,
+            target_: Optional[str] = None, **kwargs
+    ):
+        super().__init__(*args, mode=mode, channel=channel, source=source, target_=target_, **kwargs)
+
+
+class IRCPartEvent(IRCEvent):
+    """
+    Event triggered when an IRC nick parts.
+    """
+    def __init__(self, *args, nick: str, **kwargs):
+        super().__init__(*args, nick=nick, **kwargs)
+
+
+class IRCQuitEvent(IRCEvent):
+    """
+    Event triggered when an IRC nick quits.
+    """
+    def __init__(self, *args, nick: str, **kwargs):
+        super().__init__(*args, nick=nick, **kwargs)
+
+
+class IRCNickChangeEvent(IRCEvent):
+    """
+    Event triggered when a IRC nick changes.
+    """
+    def __init__(self, *args, before: str, after: str, **kwargs):
+        super().__init__(*args, before=before, after=after, **kwargs)
+
+
+class IRCConnectEvent(IRCEvent):
+    """
+    Event triggered upon server connection.
+    """
+
+
+class IRCDisconnectEvent(IRCEvent):
+    """
+    Event triggered upon server disconnection.
+    """
+
+
+class IRCPrivateMessageEvent(IRCEvent):
+    """
+    Event triggered when a private message is received.
+    """
+    def __init__(self, *args, text: str, nick: str, mentions_me: bool = False, **kwargs):
+        super().__init__(*args, text=text, nick=nick, mentions_me=mentions_me, **kwargs)
+
+
+class IRCPublicMessageEvent(IRCEvent):
+    """
+    Event triggered when a public message is received.
+    """
+    def __init__(self, *args, text: str, nick: str, mentions_me: bool = False, **kwargs):
+        super().__init__(*args, text=text, nick=nick, mentions_me=mentions_me, **kwargs)
+
+
+class IRCDCCRequestEvent(IRCEvent):
+    """
+    Event triggered when a DCC connection request is received.
+    """
+    def __init__(self, *args, address: str, port: int, nick: str, **kwargs):
+        super().__init__(*args, address=address, port=port, nick=nick, **kwargs)
+
+
+class IRCDCCMessageEvent(IRCEvent):
+    """
+    Event triggered when a DCC message is received.
+    """
+    def __init__(self, *args, address: str, body: bytes, **kwargs):
+        super().__init__(
+            *args, address=address, body=b64encode(body).decode(), **kwargs
+        )
+
+
+class IRCCTCPMessageEvent(IRCEvent):
+    """
+    Event triggered when a CTCP message is received.
+    """
+    def __init__(self, *args, address: str, message: str, **kwargs):
+        super().__init__(*args, address=address, message=message, **kwargs)
+
+
+class IRCDCCFileRequestEvent(IRCEvent):
+    """
+    Event triggered when a DCC file send request is received.
+    """
+    def __init__(
+            self, *args, nick: str, address: str, file: str,
+            port: int, size: Optional[int] = None, **kwargs
+    ):
+        super().__init__(
+            *args, nick=nick, address=address, file=file, port=port,
+            size=size, **kwargs
+        )
+
+
+class IRCDCCFileRecvCompletedEvent(IRCEvent):
+    """
+    Event triggered when a DCC file transfer RECV is completed.
+    """
+    def __init__(
+            self, *args, address: str, port: int, file: str,
+            size: Optional[int] = None, **kwargs
+    ):
+        super().__init__(
+            *args, address=address, file=file,
+            port=port, size=size, **kwargs
+        )
+
+
+class IRCDCCFileRecvCancelledEvent(IRCEvent):
+    """
+    Event triggered when a DCC file transfer RECV is cancelled.
+    """
+    def __init__(
+            self, *args, address: str, port: int, file: str,
+            error: str, **kwargs
+    ):
+        super().__init__(
+            *args, address=address, file=file, port=port,
+            error=error, **kwargs
+        )
+
+
+class IRCDCCFileSendCompletedEvent(IRCEvent):
+    """
+    Event triggered when a DCC file transfer SEND is completed.
+    """
+    def __init__(self, *args, address: str, port: int, file: str, **kwargs):
+        super().__init__(*args, address=address, file=file, port=port, **kwargs)
+
+
+class IRCDCCFileSendCancelledEvent(IRCEvent):
+    """
+    Event triggered when a DCC file transfer SEND is cancelled.
+    """
+    def __init__(
+            self, *args, address: str, port: int, file: str,
+            error: str, **kwargs
+    ):
+        super().__init__(
+            *args, address=address, file=file, port=port,
+            error=error, **kwargs
+        )

platypush/plugins/chat/irc/__init__.py

@@ -0,0 +1,396 @@
+import os
+from typing import Sequence, Dict, Tuple, Union, Optional
+
+from platypush.plugins import RunnablePlugin, action
+from platypush.schemas.irc import IRCServerSchema, IRCServerStatusSchema, IRCChannelSchema
+
+from ._bot import IRCBot
+from .. import ChatPlugin
+
+
+class ChatIrcPlugin(RunnablePlugin, ChatPlugin):
+    """
+    IRC integration.
+
+    This plugin allows you to easily create IRC bots with custom logic that reacts to IRC events
+    and interact with IRC sessions.
+
+    Triggers:
+
+        * :class:`platypush.message.event.irc.IRCChannelJoinEvent` when a user joins a channel.
+        * :class:`platypush.message.event.irc.IRCChannelKickEvent` when a user is kicked from a channel.
+        * :class:`platypush.message.event.irc.IRCModeEvent` when a user/channel mode change event occurs.
+        * :class:`platypush.message.event.irc.IRCPartEvent` when a user parts a channel.
+        * :class:`platypush.message.event.irc.IRCQuitEvent` when a user quits.
+        * :class:`platypush.message.event.irc.IRCNickChangeEvent` when a user nick changes.
+        * :class:`platypush.message.event.irc.IRCConnectEvent` when the bot connects to a server.
+        * :class:`platypush.message.event.irc.IRCDisconnectEvent` when the bot disconnects from a server.
+        * :class:`platypush.message.event.irc.IRCPrivateMessageEvent` when a private message is received.
+        * :class:`platypush.message.event.irc.IRCPublicMessageEvent` when a public message is received.
+        * :class:`platypush.message.event.irc.IRCDCCRequestEvent` when a DCC connection request is received.
+        * :class:`platypush.message.event.irc.IRCDCCMessageEvent` when a DCC message is received.
+        * :class:`platypush.message.event.irc.IRCCTCPMessageEvent` when a CTCP message is received.
+        * :class:`platypush.message.event.irc.IRCDCCFileRequestEvent` when a DCC file request is received.
+        * :class:`platypush.message.event.irc.IRCDCCFileRecvCompletedEvent` when a DCC file download is completed.
+        * :class:`platypush.message.event.irc.IRCDCCFileRecvCancelledEvent` when a DCC file download is cancelled.
+        * :class:`platypush.message.event.irc.IRCDCCFileSendCompletedEvent` when a DCC file upload is completed.
+        * :class:`platypush.message.event.irc.IRCDCCFileSendCancelledEvent` when a DCC file upload is cancelled.
+
+    Requires:
+
+        * **irc** (``pip install irc``)
+
+    """
+
+    def __init__(self, servers: Sequence[dict], **kwargs):
+        """
+        :param servers: List of servers/channels that the bot will automatically connect/join.
+        """
+        super().__init__(**kwargs)
+        try:
+            self._bots: Dict[Tuple[str, int], IRCBot] = {
+                (server_conf['server'], server_conf['port']): IRCBot(**server_conf)
+                for server_conf in IRCServerSchema().load(servers, many=True)
+            }
+        except Exception as e:
+            self.logger.warning(f'Could not load IRC server configuration: {e}')
+            self.logger.exception(e)
+            raise e
+
+    @property
+    def _bots_by_server(self) -> Dict[str, IRCBot]:
+        return {
+            bot.server: bot
+            for srv, bot in self._bots.items()
+        }
+
+    @property
+    def _bots_by_server_and_port(self) -> Dict[Tuple[str, int], IRCBot]:
+        return {
+            (bot.server, bot.port): bot
+            for srv, bot in self._bots.items()
+        }
+
+    @property
+    def _bots_by_alias(self) -> Dict[str, IRCBot]:
+        return {
+            bot.alias: bot
+            for srv, bot in self._bots.items()
+            if bot.alias
+        }
+
+    def main(self):
+        self._connect()
+        self._should_stop.wait()
+
+    def _connect(self):
+        for srv, bot in self._bots.items():
+            self.logger.info(f'Connecting to IRC server {srv}')
+            bot.start()
+
+    def stop(self):
+        for srv, bot in self._bots.items():
+            self.logger.info(f'Disconnecting from IRC server {srv}')
+            try:
+                bot.stop(bot.stop_message or 'Application stopped')
+            except Exception as e:
+                self.logger.warning(f'Error while stopping connection to {srv}: {e}')
+
+        super().stop()
+
+    def _get_bot(self, server: Union[str, Tuple[str, int]]) -> IRCBot:
+        if isinstance(server, (tuple, list, set)):
+            bot = self._bots_by_server_and_port[tuple(server)]
+        else:
+            bot = self._bots_by_alias.get(server, self._bots_by_server.get(server))
+
+        assert bot, f'Bot connection to {server} not found'
+        return bot
+
+    @action
+    def send_file(
+            self, file: str, server: Union[str, Tuple[str, int]], nick: str, bind_address: Optional[str] = None
+    ):
+        """
+        Send a file to an IRC user over DCC connection.
+        Note that passive connections are currently not supported.
+
+        :param file: Path of the file that should be transferred.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param nick: Target IRC nick.
+        :param bind_address: DCC listen bind address (default: any).
+        """
+        file = os.path.expanduser(file)
+        assert os.path.isfile(file), f'{file} is not a regular file'
+        bot = self._get_bot(server)
+        bot.dcc_file_transfer(file=file, nick=nick, bind_address=bind_address)
+
+    @action
+    def send_message(
+            self, text: str, server: Union[str, Tuple[str, int]], target: Union[str, Sequence[str]]
+    ):
+        """
+        Send a message to a channel or a nick.
+
+        :param text: Message content.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param target: Message target (nick or channel). If it's a list then the message will be sent
+            to multiple targets.
+        """
+        bot = self._get_bot(server)
+        method = (
+            bot.connection.privmsg if isinstance(target, str)
+            else bot.connection.privmsg_many
+        )
+        method(target, text)
+
+    @action
+    def send_notice(
+            self, text: str, server: Union[str, Tuple[str, int]], target: str
+    ):
+        """
+        Send a notice to a channel or a nick.
+
+        :param text: Message content.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param target: Message target (nick or channel).
+        """
+        bot = self._get_bot(server)
+        bot.connection.notice(target, text)
+
+    @action
+    def servers(self) -> Sequence[dict]:
+        """
+        Get information about the connected servers.
+
+        :return: .. schema:: irc.IRCServerStatusSchema(many=True)
+        """
+        bots = self._bots_by_server.values()
+        return IRCServerStatusSchema().dump(
+            {
+                'server': bot.server,
+                'port': bot.port,
+                'alias': bot.alias,
+                'real_name': bot.connection.get_server_name(),
+                'nickname': bot.connection.get_nickname(),
+                'is_connected': bot.connection.is_connected(),
+                'connected_channels': bot.channels.keys(),
+            }
+            for bot in bots
+        )
+
+    @action
+    def channel(self, server: Union[str, Tuple[str, int]], channel: str) -> dict:
+        """
+        Get information about a connected channel.
+
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param channel:
+        :return: .. schema:: irc.IRCChannelSchema
+        """
+        bot = self._get_bot(server)
+        channel_name = channel
+        channel = bot.channels.get(channel)
+        assert channel, f'Not connected to channel {channel}'
+        return IRCChannelSchema().dump({
+            'is_invite_only': channel.is_invite_only(),
+            'is_moderated': channel.is_moderated(),
+            'is_protected': channel.is_protected(),
+            'is_secret': channel.is_secret(),
+            'name': channel_name,
+            'modes': channel.modes,
+            'opers': list(channel.opers()),
+            'owners': channel.owners(),
+            'users': list(channel.users()),
+            'voiced': list(channel.voiced()),
+        })
+
+    @action
+    def send_ctcp_message(
+            self, ctcp_type: str, body: str, server: Union[str, Tuple[str, int]], target: str
+    ):
+        """
+        Send a CTCP message to a target.
+
+        :param ctcp_type: CTCP message type.
+        :param body: Message content.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param target: Message target.
+        """
+        bot = self._get_bot(server)
+        bot.connection.ctcp(ctcp_type, target, body)
+
+    @action
+    def send_ctcp_reply(
+            self, body: str, server: Union[str, Tuple[str, int]], target: str
+    ):
+        """
+        Send a CTCP REPLY command.
+
+        :param body: Message content.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param target: Message target.
+        """
+        bot = self._get_bot(server)
+        bot.connection.ctcp_reply(target, body)
+
+    @action
+    def disconnect(self, server: Union[str, Tuple[str, int]], message: Optional[str] = None):
+        """
+        Disconnect from a server.
+
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param message: Disconnect message (default: configured ``stop_message``.
+        """
+        bot = self._get_bot(server)
+        bot.connection.disconnect(message or bot.stop_message)
+
+    @action
+    def invite(
+            self, nick: str, channel: str, server: Union[str, Tuple[str, int]]
+    ):
+        """
+        Invite a nick to a channel.
+
+        :param nick: Target IRC nick.
+        :param channel: Target IRC channel.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.invite(nick, channel)
+
+    @action
+    def join(self, channel: str, server: Union[str, Tuple[str, int]]):
+        """
+        Join a channel.
+
+        :param channel: Target IRC channel.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.join(channel)
+
+    @action
+    def kick(
+            self, nick: str, channel: str, server: Union[str, Tuple[str, int]], reason: Optional[str] = None
+    ):
+        """
+        Kick a nick from a channel.
+
+        :param nick: Target IRC nick.
+        :param channel: Target IRC channel.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param reason: Kick reason.
+        """
+        bot = self._get_bot(server)
+        bot.connection.kick(channel, nick, reason)
+
+    @action
+    def mode(
+            self, target: str, command: str, server: Union[str, Tuple[str, int]]
+    ):
+        """
+        Send a MODE command on the selected target.
+
+        :param target: IRC target.
+        :param command: Mode command.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.mode(target, command)
+
+    @action
+    def set_nick(self, nick: str, server: Union[str, Tuple[str, int]]):
+        """
+        Set the IRC nick.
+
+        :param nick: New IRC nick.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.nick(nick)
+
+    @action
+    def oper(self, nick: str, password: str, server: Union[str, Tuple[str, int]]):
+        """
+        Send an OPER command.
+
+        :param nick: IRC nick.
+        :param password: Nick password.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.oper(nick, password)
+
+    @action
+    def part(
+            self, channel: Union[str, Sequence[str]], server: Union[str, Tuple[str, int]],
+            message: Optional[str] = None
+    ):
+        """
+        Parts/exits a channel.
+
+        :param channel: IRC channel (or list of channels).
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param message: Optional part message (default: same as the bot's ``stop_message``).
+        """
+        bot = self._get_bot(server)
+        channels = [channel] if isinstance(channel, str) else channel
+        bot.connection.part(channels=channels, message=message or bot.stop_message)
+
+    @action
+    def quit(
+            self, server: Union[str, Tuple[str, int]], message: Optional[str] = None
+    ):
+        """
+        Send a QUIT command.
+
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param message: Optional quit message (default: same as the bot's ``stop_message``).
+        """
+        bot = self._get_bot(server)
+        bot.connection.quit(message=message or bot.stop_message)
+
+    @action
+    def send_raw(self, message: str, server: Union[str, Tuple[str, int]]):
+        """
+        Send a raw IRC message to a connected server.
+
+        :param message: IRC message.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        bot.connection.send_raw(message)
+
+    @action
+    def topic(self, channel: str, server: Union[str, Tuple[str, int]], topic: Optional[str] = None) -> str:
+        """
+        Get/set the topic of an IRC channel.
+
+        :param channel: IRC channel.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        :param topic: If specified, then set the new topic as channel topic.
+            Otherwise, just return the current channel topic.
+        """
+        bot = self._get_bot(server)
+        with bot.event_queue('currenttopic') as evt_queue:
+            bot.connection.topic(channel, topic)
+            evt = evt_queue.get(block=True, timeout=bot.response_timeout)
+            return evt.arguments[1]
+
+    @action
+    def whois(self, target: str, server: Union[str, Tuple[str, int]]):
+        """
+        Send a WHOIS command for a target.
+
+        :param target: IRC target.
+        :param server: IRC server, identified either by ``alias`` or ``(server, port)`` tuple.
+        """
+        bot = self._get_bot(server)
+        with bot.event_queue('whoisuser') as evt_queue:
+            bot.connection.whois([target])
+            evt = evt_queue.get(block=True, timeout=bot.response_timeout)
+            return evt.arguments
+
+
+# vim:sw=4:ts=4:et:

platypush/plugins/chat/irc/_bot.py

@@ -0,0 +1,462 @@
+import contextlib
+import logging
+import multiprocessing
+import os
+import pathlib
+import re
+import select
+import socket
+import ssl as _ssl
+import struct
+from typing import Iterable, Optional, Type, Sequence, Dict, Tuple
+
+import irc.bot
+from irc.client import Connection, Event as _IRCEvent, ServerConnection, DCCConnection, ip_numstr_to_quad, \
+    ip_quad_to_numstr
+from irc.connection import Factory as ConnectionFactory
+from irc.events import codes as irc_event_codes
+
+from platypush.context import get_bus
+from platypush.message.event.irc import IRCEvent, IRCChannelJoinEvent, IRCChannelKickEvent, IRCDisconnectEvent, \
+    IRCModeEvent, IRCNickChangeEvent, IRCPartEvent, IRCQuitEvent, IRCConnectEvent, IRCPrivateMessageEvent, \
+    IRCPublicMessageEvent, IRCDCCRequestEvent, IRCDCCMessageEvent, IRCDCCFileRequestEvent, IRCCTCPMessageEvent, \
+    IRCDCCFileRecvCompletedEvent, IRCDCCFileRecvCancelledEvent, IRCDCCFileSendCompletedEvent, \
+    IRCDCCFileSendCancelledEvent
+
+
+class IRCBot(irc.bot.SingleServerIRCBot):
+    def __init__(
+            self, server: str, port: int, nickname: str, alias: str,
+            channels: Iterable[str],
+            response_timeout: Optional[float],
+            dcc_file_transfer_timeout: Optional[float],
+            dcc_accept_timeout: Optional[float],
+            dcc_downloads_dir: str, realname: Optional[str] = None,
+            password: Optional[str] = None, ssl: bool = False,
+            ipv6: bool = False, stop_message: Optional[str] = None,
+            dcc_ip_whitelist: Optional[Sequence[str]] = None,
+            dcc_ip_blacklist: Optional[Sequence[str]] = None,
+            dcc_nick_whitelist: Optional[Sequence[str]] = None,
+            dcc_nick_blacklist: Optional[Sequence[str]] = None,
+            dcc_max_connections: Optional[int] = None,
+    ):
+        connection_factory = ConnectionFactory()
+        if ssl:
+            connection_factory.wrapper = _ssl.wrap_socket
+        if ipv6:
+            connection_factory.family = socket.AF_INET6
+
+        super().__init__(
+            server_list=[(server, port)], nickname=nickname,
+            realname=realname, connect_factory=connection_factory
+        )
+
+        self.server = server
+        self.port = port
+        self.alias = alias
+        self._password = password
+        self.channels.update({channel: None for channel in channels})
+        self._stop_message = stop_message
+        self.dcc_ip_whitelist = set(dcc_ip_whitelist or [])
+        self.dcc_ip_blacklist = set(dcc_ip_blacklist or [])
+        self.dcc_nick_whitelist = set(dcc_nick_whitelist or [])
+        self.dcc_nick_blacklist = set(dcc_nick_blacklist or [])
+        self.dcc_downloads_dir = dcc_downloads_dir
+        self.response_timeout = response_timeout
+        self.dcc_file_transfer_timeout = dcc_file_transfer_timeout
+        self.dcc_accept_timeout = dcc_accept_timeout
+        self.dcc_max_connections = dcc_max_connections
+        self._dcc_send_procs: Dict[Tuple[str, int], multiprocessing.Process] = {}
+        self._dcc_recv_procs: Dict[Tuple[str, int], multiprocessing.Process] = {}
+        self._dcc_proc_completion_queue = multiprocessing.Queue()
+        self._dcc_processor: Optional[multiprocessing.Process] = None
+        self.logger = logging.getLogger(f'irc@{server}')
+        # Maps <matching_event_type> -> <response_queue>
+        self._pending_requests: Dict[str, multiprocessing.Queue] = {}
+
+    @property
+    def stop_message(self) -> Optional[str]:
+        return self._stop_message
+
+    def _post_event(self, connection: Connection, output_event_type: Type[IRCEvent], **kwargs):
+        if isinstance(connection, ServerConnection):
+            kwargs['server'] = connection.server
+            kwargs['port'] = connection.port
+
+        kwargs['connected'] = connection.connected
+        kwargs['alias'] = self.alias
+        event = output_event_type(**kwargs)
+        get_bus().post(event)
+
+    def on_join(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(connection, IRCChannelJoinEvent, channel=event.target, nick=event.source.nick)
+        super()._on_join(connection, event)
+
+    def on_kick(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(
+            connection, IRCChannelKickEvent, channel=event.target,
+            source_nick=event.arguments[1], target_nick=event.arguments[0]
+        )
+
+        super()._on_kick(connection, event)
+
+    def on_nick(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(
+            connection, IRCNickChangeEvent, before=event.source.nick, after=event.target.nick
+        )
+        super()._on_nick(connection, event)
+
+    def on_mode(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(
+            connection, IRCModeEvent, mode=event.arguments[0],
+            source=event.source.nick,
+            target_=(event.arguments[1] if len(event.arguments) > 1 else None),
+            channel=event.target,
+        )
+
+        super()._on_mode(connection, event)
+
+    def on_part(self, connection: Connection, event: _IRCEvent):
+        self._post_event(connection, IRCPartEvent, nick=event.source.nick)
+        super()._on_part(connection, event)
+
+    def on_quit(self, connection: Connection, event: _IRCEvent):
+        self._post_event(connection, IRCQuitEvent, nick=event.source.nick)
+        super()._on_quit(connection, event)
+
+    def on_welcome(self, connection: Connection, *_):
+        self._post_event(connection, IRCConnectEvent)
+        for channel in self.channels:
+            self.logger.info(f'Joining channel {channel}')
+            self.connection.join(channel)
+
+    @staticmethod
+    def on_nicknameinuse(connection: ServerConnection, *_):
+        connection.nick(connection.nickname + '_')
+
+    @staticmethod
+    def _mentions_me(connection: ServerConnection, text: str) -> bool:
+        return bool(re.search(fr'(^|\s|@){connection.nickname}(:|\s|!|\?|$)', text))
+
+    def on_pubmsg(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(
+            connection, IRCPublicMessageEvent,
+            text=event.arguments[0], nick=event.source.nick,
+            channel=event.target,
+            mentions_me=self._mentions_me(connection, event.arguments[0])
+        )
+
+    def on_privmsg(self, connection: ServerConnection, event: _IRCEvent):
+        self._post_event(
+            connection, IRCPrivateMessageEvent,
+            text=event.arguments[0], nick=event.source.nick,
+            channel=event.target,
+            mentions_me=self._mentions_me(connection, event.arguments[0])
+        )
+
+    def on_dccchat(self, connection: DCCConnection, event: _IRCEvent):
+        if len(event.arguments) != 2:
+            return
+
+        args = event.arguments[1].split()
+        if len(args) == 4:
+            try:
+                address = ip_numstr_to_quad(args[2])
+                port = int(args[3])
+            except ValueError:
+                return
+
+            nick = event.source.nick
+            if not self._is_dcc_connection_request_allowed(address=address, nick=nick):
+                self.logger.info(f'Refused DCC connection from address={address} nick={nick}')
+                connection.disconnect('Unauthorized peer')
+                return
+
+            self._post_event(
+                connection, IRCDCCRequestEvent, address=address, port=port, nick=nick
+            )
+
+            self.dcc('chat').connect(address, port)
+
+    def _read(self, sock: socket.socket, bufsize: int = 4096) -> bytes:
+        if self.dcc_file_transfer_timeout:
+            sock.setblocking(False)
+            has_data = select.select([sock], [], [], self.dcc_file_transfer_timeout)
+            if has_data[0]:
+                return sock.recv(bufsize)
+            raise TimeoutError(f'Time out ({self.dcc_file_transfer_timeout}s)')
+
+        return sock.recv(bufsize)
+
+    def _dcc_connect_processor(self):
+        while True:
+            proc_type, addr, port = self._dcc_proc_completion_queue.get()
+            conn_map = getattr(self, f'_dcc_{proc_type}_procs', {})
+            conn_map.pop((addr, port), None)
+
+    def _process_dcc_recv(self, connection: DCCConnection, filename: str, address: str, port: int, size: int):
+        pathlib.Path(self.dcc_downloads_dir).mkdir(parents=True, exist_ok=True)
+        filename = os.path.abspath(os.path.join(self.dcc_downloads_dir, filename))
+        assert filename.startswith(self.dcc_downloads_dir), (
+            'Attempt to save a file outside the downloads directory'
+        )
+
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock, \
+                open(filename, 'wb') as f:
+            try:
+                sock.connect((address, port))
+                processed_bytes = 0
+
+                while processed_bytes < size:
+                    buf = self._read(sock)
+                    processed_bytes += len(buf)
+                    f.write(buf)
+                    sock.send(f'{socket.htonl(processed_bytes)}'.encode())
+
+                self._post_event(
+                    connection, IRCDCCFileRecvCompletedEvent, address=address,
+                    port=port, file=filename, size=size
+                )
+            except Exception as e:
+                self.logger.error(f'DCC transfer error from {address}:{port}: {e}')
+                self.logger.exception(e)
+                self._post_event(
+                    connection, IRCDCCFileRecvCancelledEvent, address=address,
+                    port=port, file=filename, error=str(e)
+                )
+            finally:
+                connection.disconnect()
+                self._dcc_proc_completion_queue.put(('recv', address, port))
+
+    def _process_dcc_send(self, connection: DCCConnection, filename: str):
+        try:
+            dcc_sock, addr = connection.socket.accept()
+            self._set_accept_timeout(dcc_sock)
+            self.logger.info(f'Accepted DCC connection from {addr}')
+
+            # Create a new server socket for the file transfer
+            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as srv_sock:
+                srv_sock.bind((connection.localaddress, 0))
+                address, transfer_port = srv_sock.getsockname()
+                dcc_sock.send(
+                    (
+                        f'CTCP_MESSAGE \x01'
+                        f'DCC SEND {os.path.basename(filename)} '
+                        f'{ip_quad_to_numstr(address)} {transfer_port} '
+                        f'{os.path.getsize(filename)}\x01\r\n'
+                    ).encode()
+                )
+
+                # Wait for a connection on the file transfer port
+                self._set_accept_timeout(srv_sock)
+                srv_sock.listen(1)
+                client_sock, addr = srv_sock.accept()
+                self.logger.info(f'DCC file transfer for {filename} accepted on {addr}')
+
+                try:
+                    with open(filename, 'rb') as f:
+                        buf = f.read(4096)
+                        while buf:
+                            client_sock.send(buf)
+                            recv_bytes = struct.unpack('>i', self._read(client_sock))[0]
+                            buf = buf[recv_bytes:]
+
+                            if not buf:
+                                buf = f.read(4096)
+
+                    self._post_event(
+                        connection, IRCDCCFileSendCompletedEvent,
+                        file=filename, address=address, port=transfer_port
+                    )
+                finally:
+                    client_sock.close()
+                    dcc_sock.close()
+        except Exception as e:
+            self.logger.error(f'DCC transfer error to {connection.peeraddress}:{connection.peerport}: {e}')
+            self.logger.exception(e)
+            self._post_event(
+                connection, IRCDCCFileSendCancelledEvent, address=connection.peeraddress,
+                port=connection.peerport, file=filename, error=str(e)
+            )
+        finally:
+            connection.disconnect()
+            self._dcc_proc_completion_queue.put(('send', connection.localaddress, connection.localport))
+
+    def _set_accept_timeout(self, sock: socket.socket):
+        if self.dcc_accept_timeout:
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            sock.settimeout(self.dcc_accept_timeout)
+
+    def _stop_dcc_connection(self, address: str, port: int):
+        self.logger.info(f'Stopping DCC connection to {address}:{port}')
+        proc = self._dcc_recv_procs.pop((address, port), None)
+        if proc and proc.is_alive():
+            proc.terminate()
+
+    def _accept_dcc_file_request(self, connection: DCCConnection, ctcp_msg: str, nick: str):
+        ctcp_msg = [
+            token.strip()
+            for token in ctcp_msg.split(' ')
+            if token
+        ]
+
+        filename = ' '.join(ctcp_msg[2:-3])
+        address, port, size = ctcp_msg[-3:]
+
+        if not (filename and address and port):
+            return
+
+        address = ip_numstr_to_quad(address)
+        port = int(port)
+        size = int(size)
+
+        if port == 0:
+            self.logger.warning('Passive CTCP file transfer is currently not supported')
+            return
+
+        self._post_event(
+            connection, IRCDCCFileRequestEvent,
+            address=address,
+            port=port, file=filename,
+            size=size, nick=nick
+        )
+
+        # Accept the file request
+        # (if we're here then the peer is whitelisted/not blacklisted)
+        self._dcc_recv_procs[(address, port)] = multiprocessing.Process(
+            target=self._process_dcc_recv, kwargs={
+                'connection': connection,
+                'address': address,
+                'port': port,
+                'filename': filename,
+                'size': size,
+            }
+        )
+
+        self._dcc_recv_procs[(address, port)].start()
+
+    def _handle_ctcp_message(self, connection: DCCConnection, event: _IRCEvent):
+        body = event.arguments[0]
+        sep_pos = [i for i, ch in enumerate(body) if ch == ord(b'\x01')]
+        msg = []
+
+        try:
+            msg = [
+                body[(0 if i == 0 else sep_pos[i - 1] + 1):pos].decode().strip()
+                for i, pos in enumerate(sep_pos)
+            ][1:]
+        except (ValueError, TypeError):
+            pass
+
+        if not msg:
+            return
+
+        # Check if this is a DCC file send request
+        if msg[0].startswith('DCC SEND '):
+            self._accept_dcc_file_request(connection, msg[0], event.source)
+        else:
+            self._post_event(
+                connection, IRCCTCPMessageEvent, address=event.source, message=msg
+            )
+
+    def on_dccmsg(self, connection: DCCConnection, event: _IRCEvent):
+        ctcp_header = b'CTCP_MESSAGE'
+        if event.arguments[0][:len(ctcp_header)] == ctcp_header:
+            return self._handle_ctcp_message(connection, event)
+
+        self._post_event(connection, IRCDCCMessageEvent, address=event.source, body=event.arguments[0])
+
+    def on_disconnect(self, connection: Connection, event: _IRCEvent):
+        self._post_event(connection, IRCDisconnectEvent)
+        # Cache channels for reconnect logic
+        channels = {ch: None for ch in self.channels.keys()}
+        super()._on_disconnect(connection, event)
+        self.channels.update(channels)
+
+    def on_whoisuser(self, _, event: _IRCEvent):
+        self._process_event_on_queue(event)
+
+    def on_currenttopic(self, _, event: _IRCEvent):
+        self._process_event_on_queue(event)
+
+    def _process_event_on_queue(self, event: _IRCEvent):
+        q = self._pending_requests.get(event.type)
+        if q:
+            q.put(event)
+
+    def _on_generic_event(self, _, event: _IRCEvent):
+        self.logger.debug(f'Received raw unhandled IRC event on {self.server}: {event.__dict__}')
+
+    def _is_dcc_connection_request_allowed(self, address: str, nick: str) -> bool:
+        if self.dcc_ip_whitelist and address not in self.dcc_ip_whitelist:
+            return False
+        if self.dcc_ip_blacklist and address in self.dcc_ip_blacklist:
+            return False
+        if self.dcc_nick_whitelist and nick not in self.dcc_nick_whitelist:
+            return False
+        if self.dcc_nick_blacklist and nick in self.dcc_nick_blacklist:
+            return False
+
+        if self.dcc_max_connections and len(self._dcc_recv_procs) >= self.dcc_max_connections:
+            self.logger.warning(
+                f'Refused new DCC connection: maximum number of concurrent '
+                f'connections ({self.dcc_max_connections}) reached'
+            )
+
+            return False
+
+        return True
+
+    def dcc_file_transfer(self, file: str, nick: str, bind_address: Optional[str] = None):
+        conn: DCCConnection = self.dcc('chat')
+        bind_address = (bind_address, 0) if bind_address else None
+        conn.listen(bind_address)
+        conn.passive = False
+        self.connection.privmsg(
+            nick,
+            f'\x01DCC CHAT chat {ip_quad_to_numstr(conn.localaddress)} {conn.localport}\x01'
+        )
+
+        send_proc = self._dcc_send_procs[(conn.localaddress, conn.localport)] = multiprocessing.Process(
+            target=self._process_dcc_send,
+            kwargs={
+                'connection': conn,
+                'filename': file,
+            }
+        )
+
+        send_proc.start()
+        send_proc.join()
+
+    @contextlib.contextmanager
+    def event_queue(self, event_type: str) -> multiprocessing.Queue:
+        q = self._pending_requests[event_type] = multiprocessing.Queue()
+        try:
+            yield q
+        finally:
+            q.close()
+            self._pending_requests.pop(event_type, None)
+
+    def start(self):
+        self._dcc_processor = multiprocessing.Process(target=self._dcc_connect_processor)
+        self._dcc_processor.start()
+
+        for event_code in irc_event_codes.keys():
+            handler = getattr(self, f'on_{event_code}', None)
+            if not handler:
+                self.reactor.add_global_handler(
+                    event_code, lambda conn, evt: self._on_generic_event(conn, evt)
+                )
+
+        super().start()
+
+    def stop(self, msg: Optional[str] = None):
+        msg = msg or self.stop_message
+        for addr, port in list(self._dcc_recv_procs.keys()) + list(self._dcc_send_procs.keys()):
+            self._stop_dcc_connection(addr, port)
+
+        if self._dcc_processor and self._dcc_processor.is_alive():
+            self._dcc_processor.terminate()
+        self._dcc_processor = None
+
+        super().disconnect(msg=msg)

platypush/plugins/chat/irc/manifest.yaml

@@ -0,0 +1,25 @@
+manifest:
+  events:
+    platypush.message.event.irc.IRCChannelJoinEvent: when a user joins a channel
+    platypush.message.event.irc.IRCChannelKickEvent: when a user is kicked from a channel
+    platypush.message.event.irc.IRCModeEvent: when a user/channel mode change event occurs
+    platypush.message.event.irc.IRCPartEvent: when a user parts a channel
+    platypush.message.event.irc.IRCQuitEvent: when a user quits
+    platypush.message.event.irc.IRCNickChangeEvent: when a user nick changes
+    platypush.message.event.irc.IRCConnectEvent: when the bot connects to a server
+    platypush.message.event.irc.IRCDisconnectEvent: when the bot disconnects from a server
+    platypush.message.event.irc.IRCPrivateMessageEvent: when a private message is received
+    platypush.message.event.irc.IRCPublicMessageEvent: when a public message is received
+    platypush.message.event.irc.IRCDCCRequestEvent: when a DCC connection request is received
+    platypush.message.event.irc.IRCDCCMessageEvent: when a DCC message is received
+    platypush.message.event.irc.IRCCTCPMessageEvent: when a CTCP message is received
+    platypush.message.event.irc.IRCDCCFileRequestEvent: when a DCC file request is received
+    platypush.message.event.irc.IRCDCCFileRecvCompletedEvent: when a DCC file download is completed
+    platypush.message.event.irc.IRCDCCFileRecvCancelledEvent: when a DCC file download is cancelled
+    platypush.message.event.irc.IRCDCCFileSendCompletedEvent: when a DCC file upload is completed
+    platypush.message.event.irc.IRCDCCFileSendCancelledEvent: when a DCC file upload is cancelled
+  package: platypush.plugins.chat.irc
+  type: plugin
+  install:
+    pip:
+      - irc

platypush/plugins/gotify/manifest.yaml

@@ -1,4 +1,5 @@
 manifest:
-  events: {}
+  events:
+    platypush.message.event.gotify.GotifyMessageEvent: when a new message is received.
   package: platypush.plugins.gotify
   type: plugin

platypush/schemas/irc.py

@@ -0,0 +1,135 @@
+import os
+
+from marshmallow import fields
+from marshmallow.schema import Schema
+
+from platypush.schemas import StrippedString
+
+
+class IRCServerSchema(Schema):
+    server = fields.String(
+        required=True,
+        metadata=dict(
+            description='Server address or hostname',
+            example='irc.example.org',
+        )
+    )
+
+    port = fields.Int(
+        missing=6667,
+        metadata=dict(
+            description='IRC server port',
+            example=6667,
+        )
+    )
+
+    password = fields.String(allow_none=True, default=None, metadata=dict(example='password'))
+    nickname = fields.String(required=True, metadata=dict(example='testbot'))
+    realname = fields.String(allow_none=True, metadata=dict(example='My Real Name'))
+    alias = StrippedString(
+        metadata=dict(description='Friendly name for this bot/server connection')
+    )
+
+    channels = fields.List(
+        fields.String(),
+        missing=list,
+        metadata=dict(
+            description='List of channels the bot will connect to',
+            example=['#channel1', '#channel2', '#channel3']
+        )
+    )
+
+    ssl = fields.Boolean(missing=False)
+    ipv6 = fields.Boolean(missing=False)
+    stop_message = StrippedString(missing='Application stopped', metadata=dict(description='Quit/die message'))
+
+    dcc_ip_whitelist = fields.List(
+        fields.String,
+        missing=list,
+        metadata=dict(
+            description='If specified then only DCC connections from the IP addresses on this list will be accepted',
+        )
+    )
+
+    dcc_ip_blacklist = fields.List(
+        fields.String,
+        missing=list,
+        metadata=dict(
+            description='If specified then DCC connections from the IP addresses on this list will be rejected',
+        )
+    )
+
+    dcc_nick_whitelist = fields.List(
+        fields.String,
+        missing=list,
+        metadata=dict(
+            description='If specified then only DCC connections from the nicknames on this list will be accepted',
+        )
+    )
+
+    dcc_nick_blacklist = fields.List(
+        fields.String,
+        missing=list,
+        metadata=dict(
+            description='If specified then DCC connections from the nicknames on this list will be rejected',
+        )
+    )
+
+    dcc_downloads_dir = fields.String(
+        missing=os.path.join(os.path.expanduser('~'), 'Downloads'),
+        metadata=dict(description='DCC file transfers will be downloaded to this folder (default: ~/Downloads)'),
+    )
+
+    response_timeout = fields.Number(
+        missing=30.,
+        metadata=dict(
+            description='How long we should wait for a response to an IRC request '
+                        '(default: 30 seconds)',
+        )
+    )
+
+    dcc_file_transfer_timeout = fields.Number(
+        missing=30.,
+        metadata=dict(
+            description='How long we should wait on a pending DCC file transfer with '
+                        'no data being transmitted (default: 30 seconds)',
+        )
+    )
+
+    dcc_accept_timeout = fields.Number(
+        missing=300.,
+        metadata=dict(
+            description='How long we should wait on a pending DCC request '
+                        'until the user accepts (default: 300 seconds)',
+        )
+    )
+
+    dcc_max_connections = fields.Int(
+        missing=10,
+        metadata=dict(
+            description='Maximum number of concurrent DCC connections allowed on this bot (default: 10)'
+        )
+    )
+
+
+class IRCServerStatusSchema(Schema):
+    server = StrippedString(required=True)
+    port = fields.Int(required=True)
+    alias = StrippedString()
+    real_name = fields.String()
+    nickname = fields.String()
+    is_connected = fields.Boolean()
+    connected_channels = fields.List(fields.String)
+
+
+class IRCChannelSchema(Schema):
+    name = fields.String(required=True)
+    modes = fields.List(fields.String)
+    opers = fields.List(fields.String)
+    owners = fields.List(fields.String)
+    users = fields.List(fields.String)
+    voiced = fields.List(fields.String)
+    is_invite_only = fields.Boolean()
+    is_moderated = fields.Boolean()
+    is_protected = fields.Boolean()
+    is_secret = fields.Boolean()

setup.py

@@ -252,5 +252,7 @@ setup(
         'pca9685': ['adafruit-python-shell', 'adafruit-circuitpython-pca9685'],
         # Support for ngrok integration
         'ngrok': ['pyngrok'],
+        # Support for IRC integration
+        'irc': ['irc'],
     },
 )