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#!/usr/bin/env python3
#
# This is very horrible and quickly written
# But it works
#
# Copyright © 2022 by luk3yx
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
from __future__ import annotations
from collections.abc import Iterator, Mapping, Sequence
from typing import Optional
import datetime, miniirc, re, traceback # type: ignore
assert miniirc.ver >= (1,8,1)
_esc_re = re.compile(r'\\(.)')
# Backslash must be first
_idc_escapes = {'\\': '\\', 'r': '\r', 'n': '\n', 't': '\t'}
def _get_idc_args(command: str, kwargs: Mapping[str, Optional[str | float]]
) -> Iterator[str]:
yield command
for key, value in kwargs.items():
if value is not None:
value = str(value)
for escape_char, char in _idc_escapes.items():
value = value.replace(char, '\\' + escape_char)
yield f'{key.upper()}={value}'
def _parse_join(irc: IDC, hostmask: tuple[str, str, str],
tags: Mapping[str, str], args: list[str]) -> None:
users = tags.get('=idc-join-users')
if isinstance(users, str):
irc._numeric('353', '=', args[0], users)
irc._numeric('366', args[0], 'End of /NAMES list')
class IDC(miniirc.IRC):
if miniirc.ver[0] >= 2:
def _dispatch(self, command: str, user: str, args: list[str]) -> None:
self.handle_msg(miniirc.IRCMessage(
command,
(user, '~u', f'idc/{user}') if user else ('', '', ''),
{},
args,
))
else:
def _dispatch(self, command: str, user: str, args: list[str]) -> None:
if args:
args[-1] = ':' + args[-1]
self._handle(
command,
(user, '~u', f'idc/{user}') if user else ('', '', ''),
{},
args,
)
def _numeric(self, numeric: str, *args: str) -> None:
self._dispatch(numeric, '', [self.current_nick, *args])
def __init__(self, *args, **kwargs) -> None:
super().__init__(*args, **kwargs)
self.Handler('JOIN', colon=False, ircv3=True)(_parse_join)
def _idc_message_parser_no_exc(
self, msg: str
) -> Optional[tuple[str, tuple[str, str, str], dict[str, str], list[str]]]:
try:
return self.idc_message_parser(msg)
except Exception:
traceback.print_exc()
return None
def idc_message_parser(
self, msg: str
) -> Optional[tuple[str, tuple[str, str, str], dict[str, str], list[str]]]:
idc_cmd = None
idc_args = {}
for arg in msg.split('\t'):
if '=' in arg:
key, value = arg.split('=', 1)
idc_args[key] = _esc_re.sub(
lambda m: _idc_escapes.get(m.group(1), '\ufffd'),
value
)
else:
idc_cmd = arg
# Translate IDC keyword arguments into IRC positional ones
tags = {}
if idc_cmd == 'PRIVMSG':
command = 'PRIVMSG'
args = [self.current_nick, idc_args['MESSAGE']]
elif idc_cmd == 'CHANMSG':
command = 'PRIVMSG'
args = ['#' + idc_args['TARGET'], idc_args['MESSAGE']]
elif idc_cmd == 'LOGIN_GOOD':
self._sasl = True
command = '001'
args = [self.current_nick, f'Welcome to IDC {self.current_nick}']
elif idc_cmd == 'PONG':
command = 'PONG'
args = [self.ip, idc_args.get('COOKIE', '')]
elif idc_cmd == 'JOIN':
command = 'JOIN'
idc_args['SOURCE'] = self.current_nick
args = ['#' + idc_args['CHANNEL']]
# HACK: Add a message tag and fire other events later rather than
# firing events from the parser function which feels worse.
# The tag name starts with = so that it doesn't conflict with any
# actual IRC tags.
tags['=idc-join-users'] = idc_args['USERS']
else:
return None
# Add generic parameters
if 'SOURCE' in idc_args:
user = idc_args['SOURCE']
hostmask = (user, '~u', f'idc/{user}')
tags['account'] = user
else:
hostmask = ('', '', '')
if command == 'PRIVMSG':
# If echo-message wasn't requested then don't send self messages
if (hostmask[0] == self.current_nick and
'echo-message' not in self.active_caps):
return None
# Parse the message type
msg_type = idc_args.get('TYPE', '').upper()
if msg_type == 'NOTICE':
command = 'NOTICE'
elif msg_type == 'ACTION':
args[1] = f'\x01ACTION {args[1]}\x01'
if 'TS' in idc_args:
dt = datetime.datetime.utcfromtimestamp(float(idc_args['TS']))
tags['time'] = dt.isoformat() + 'Z'
if 'LABEL' in idc_args:
tags['label'] = idc_args['LABEL']
if miniirc.ver[0] >= 2:
return miniirc.IRCMessage(command, hostmask, tags, args)
else:
if args:
args[-1] = ':' + args[-1]
return command, hostmask, tags, args
# Send raw messages
def idc_send(self, command: str, **kwargs: Optional[str | float]):
super().quote('\t'.join(_get_idc_args(command, kwargs)), force=True)
def quote(self, *msg: str, force: Optional[bool] = None,
tags: Optional[Mapping[str, str | bool]] = None) -> None:
cmd, _, tags2, args = miniirc.ircv3_message_parser(' '.join(msg))
if miniirc.ver[0] < 2 and args and args[-1].startswith(':'):
args[-1] = args[-1][1:]
self.send(cmd, *args, force=force, tags=tags or tags2)
def _get_idc_account(self) -> Sequence[str]:
if isinstance(self.ns_identity, tuple):
return self.ns_identity
else:
return self.ns_identity.split(' ', 1)
@property
def current_nick(self) -> str:
return self._get_idc_account()[0]
def send(self, cmd: str, *args: str, force: Optional[bool] = None,
tags: Optional[Mapping[str, str | bool]] = None) -> None:
cmd = cmd.upper()
label = tags.get('label') if tags else None
if cmd in ('PRIVMSG', 'NOTICE'):
target = args[0]
assert target != 'NickServ'
msg = args[1]
msg_type: Optional[str]
if cmd == 'NOTICE':
msg_type = 'NOTICE'
elif msg.startswith('\x01ACTION'):
msg = msg[8:].rstrip('\x01')
msg_type = 'ACTION'
else:
msg_type = None
if target.startswith('#'):
idc_cmd = 'CHANMSG'
target = target[1:]
else:
idc_cmd = 'PRIVMSG'
self.idc_send(idc_cmd, target=target, type=msg_type, message=msg,
label=label)
elif cmd == 'PING':
self.idc_send('PING', cookie=args[0], label=label)
elif cmd == 'USER':
user, password = self._get_idc_account()
self.idc_send('LOGIN', username=user, password=password,
label=label)
self.active_caps = self.ircv3_caps & {
'account-tag', 'echo-message', 'labeled-response',
'message-tags'
}
elif self.connected:
self._numeric('421', cmd, 'Unknown command')
# Override the message parser to change the default parser.
def change_parser(self, parser=None):
super().change_parser(parser or self._idc_message_parser_no_exc)
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