|
1
|
|
|
""" |
|
2
|
|
|
weitersager.irc |
|
3
|
|
|
~~~~~~~~~~~~~~~ |
|
4
|
|
|
|
|
5
|
|
|
Internet Relay Chat |
|
6
|
|
|
|
|
7
|
|
|
:Copyright: 2007-2020 Jochen Kupperschmidt |
|
8
|
|
|
:License: MIT, see LICENSE for details. |
|
9
|
|
|
""" |
|
10
|
|
|
|
|
11
|
|
|
from dataclasses import dataclass |
|
12
|
|
|
from typing import Optional |
|
13
|
|
|
|
|
14
|
|
|
from irc.bot import SingleServerIRCBot |
|
15
|
|
|
from jaraco.stream.buffer import LenientDecodingLineBuffer |
|
16
|
|
|
|
|
17
|
|
|
from .signals import channel_joined, shutdown_requested |
|
18
|
|
|
from .util import log, start_thread |
|
19
|
|
|
|
|
20
|
|
|
|
|
21
|
|
|
@dataclass(frozen=True) |
|
22
|
|
|
class Channel: |
|
23
|
|
|
"""An IRC channel with optional password.""" |
|
24
|
|
|
name: str |
|
25
|
|
|
password: Optional[str] = None |
|
26
|
|
|
|
|
27
|
|
|
|
|
28
|
|
|
class Bot(SingleServerIRCBot): |
|
29
|
|
|
"""An IRC bot to forward messages to IRC channels.""" |
|
30
|
|
|
|
|
31
|
|
|
def __init__( |
|
32
|
|
|
self, |
|
33
|
|
|
server_spec, |
|
34
|
|
|
nickname, |
|
35
|
|
|
realname, |
|
36
|
|
|
channels, |
|
37
|
|
|
*, |
|
38
|
|
|
shutdown_predicate=None, |
|
39
|
|
|
): |
|
40
|
|
|
log('Connecting to IRC server {0.host}:{0.port:d} ...', server_spec) |
|
41
|
|
|
|
|
42
|
|
|
SingleServerIRCBot.__init__(self, [server_spec], nickname, realname) |
|
43
|
|
|
|
|
44
|
|
|
# Avoid `UnicodeDecodeError` on non-UTF-8 messages. |
|
45
|
|
|
self.connection.buffer_class = LenientDecodingLineBuffer |
|
46
|
|
|
|
|
47
|
|
|
# Note: `self.channels` already exists in super class. |
|
48
|
|
|
self.channels_to_join = channels |
|
49
|
|
|
|
|
50
|
|
|
self.shutdown_predicate = shutdown_predicate |
|
51
|
|
|
|
|
52
|
|
|
def start(self): |
|
53
|
|
|
"""Connect to the server, in a separate thread.""" |
|
54
|
|
|
start_thread(super().start, self.__class__.__name__) |
|
55
|
|
|
|
|
56
|
|
|
def get_version(self): |
|
57
|
|
|
return 'Weitersager' |
|
58
|
|
|
|
|
59
|
|
|
def on_welcome(self, conn, event): |
|
60
|
|
|
"""Join channels after connect.""" |
|
61
|
|
|
log('Connected to {}:{:d}.', *conn.socket.getpeername()) |
|
62
|
|
|
|
|
63
|
|
|
channel_names = sorted(c.name for c in self.channels_to_join) |
|
64
|
|
|
log('Channels to join: {}', ', '.join(channel_names)) |
|
65
|
|
|
|
|
66
|
|
|
for channel in self.channels_to_join: |
|
67
|
|
|
log('Joining channel {} ...', channel.name) |
|
68
|
|
|
conn.join(channel.name, channel.password or '') |
|
69
|
|
|
|
|
70
|
|
|
def on_nicknameinuse(self, conn, event): |
|
71
|
|
|
"""Choose another nickname if conflicting.""" |
|
72
|
|
|
self._nickname += '_' |
|
73
|
|
|
conn.nick(self._nickname) |
|
74
|
|
|
|
|
75
|
|
|
def on_join(self, conn, event): |
|
76
|
|
|
"""Successfully joined channel.""" |
|
77
|
|
|
joined_nick = event.source.nick |
|
78
|
|
|
channel_name = event.target |
|
79
|
|
|
|
|
80
|
|
|
if joined_nick == self._nickname: |
|
81
|
|
|
log('Joined IRC channel: {}', channel_name) |
|
82
|
|
|
channel_joined.send(channel_name=channel_name) |
|
83
|
|
|
|
|
84
|
|
|
def on_badchannelkey(self, conn, event): |
|
85
|
|
|
"""Channel could not be joined due to wrong password.""" |
|
86
|
|
|
channel = event.arguments[0] |
|
87
|
|
|
log('Cannot join channel {} (bad key).', channel) |
|
88
|
|
|
|
|
89
|
|
|
def on_privmsg(self, conn, event): |
|
90
|
|
|
"""React on private messages.""" |
|
91
|
|
|
nickmask = event.source |
|
92
|
|
|
text = event.arguments[0] |
|
93
|
|
|
if self.shutdown_predicate and self.shutdown_predicate(nickmask, text): |
|
94
|
|
|
self.shutdown(nickmask) |
|
95
|
|
|
|
|
96
|
|
|
def shutdown(self, nickmask): |
|
97
|
|
|
"""Shut the bot down.""" |
|
98
|
|
|
log('Shutdown requested by {}.', nickmask) |
|
99
|
|
|
shutdown_requested.send() |
|
100
|
|
|
self.die('Shutting down.') # Joins IRC bot thread. |
|
101
|
|
|
|
|
102
|
|
|
def say(self, sender, *, channel_name=None, text=None): |
|
103
|
|
|
"""Say message on channel.""" |
|
104
|
|
|
self.connection.privmsg(channel_name, text) |
|
105
|
|
|
|
|
106
|
|
|
|
|
107
|
|
|
class DummyBot: |
|
108
|
|
|
|
|
109
|
|
|
def __init__(self, server_spec, nickname, realname, channels, **options): |
|
110
|
|
|
self.channels = channels |
|
111
|
|
|
|
|
112
|
|
|
def start(self): |
|
113
|
|
|
# Fake channel joins. |
|
114
|
|
|
for channel in self.channels: |
|
115
|
|
|
channel_joined.send(channel_name=channel.name) |
|
116
|
|
|
|
|
117
|
|
|
def say(self, sender, *, channel_name=None, text=None): |
|
118
|
|
|
log('{}> {}', channel_name, text) |
|
119
|
|
|
|
|
120
|
|
|
|
|
121
|
|
|
def create_bot(server, nickname, realname, channels, **options): |
|
122
|
|
|
"""Create and return an IRC bot according to the configuration.""" |
|
123
|
|
|
if server: |
|
124
|
|
|
bot_class = Bot |
|
125
|
|
|
else: |
|
126
|
|
|
log('No IRC server specified; will write to STDOUT instead.') |
|
127
|
|
|
bot_class = DummyBot |
|
128
|
|
|
|
|
129
|
|
|
return bot_class(server, nickname, realname, channels, **options) |
|
130
|
|
|
|
|
131
|
|
|
|
|
132
|
|
|
def default_shutdown_predicate(nickmask, text): |
|
133
|
|
|
"""Determine if this is a valid shutdown request.""" |
|
134
|
|
|
return text == 'shutdown!' |
|
135
|
|
|
|
homeworkprod /
weitersager
