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source: irc_send.c @ 801b90b

Last change on this file since 801b90b was f32c14c, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-08-09T13:39:50Z
Oops. We're using channel mode +h (halfop) for a while already, but so far without advertising this in 005. This confuses irssi ans possibly other clients. Fixing that now. Also adding SAFELIST which may make some clients less afraid of using /LIST, and CHANNELLEN with an artifical limit (the code has no max. channel name limit).
Property mode set to `100644`
File size: 11.1 KB

Line
1	/********************************************************************\
2	* BitlBee -- An IRC to other IM-networks gateway *
3	* *
4	* Copyright 2002-2010 Wilmer van der Gaast and others *
5	\********************************************************************/
6
7	/* The IRC-based UI - Sending responses to commands/etc. */
8
9	/*
10	This program is free software; you can redistribute it and/or modify
11	it under the terms of the GNU General Public License as published by
12	the Free Software Foundation; either version 2 of the License, or
13	(at your option) any later version.
14
15	This program is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU General Public License for more details.
19
20	You should have received a copy of the GNU General Public License with
21	the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
22	if not, write to the Free Software Foundation, Inc., 59 Temple Place,
23	Suite 330, Boston, MA 02111-1307 USA
24	*/
25
26	#include "bitlbee.h"
27
28	void irc_send_num( irc_t irc, int code, char format, ... )
29	{
30	char text[IRC_MAX_LINE];
31	va_list params;
32
33	va_start( params, format );
34	g_vsnprintf( text, IRC_MAX_LINE, format, params );
35	va_end( params );
36
37	irc_write( irc, ":%s %03d %s %s", irc->root->host, code, irc->user->nick ? : "*", text );
38	}
39
40	void irc_send_login( irc_t *irc )
41	{
42	irc_send_num( irc, 1, ":Welcome to the BitlBee gateway, %s", irc->user->nick );
43	irc_send_num( irc, 2, ":Host %s is running BitlBee " BITLBEE_VERSION " " ARCH "/" CPU ".", irc->root->host );
44	irc_send_num( irc, 3, ":%s", IRCD_INFO );
45	irc_send_num( irc, 4, "%s %s %s %s", irc->root->host, BITLBEE_VERSION, UMODES UMODES_PRIV, CMODES );
46	irc_send_num( irc, 5, "PREFIX=(ohv)@%%+ CHANTYPES=%s CHANMODES=,,,%s NICKLEN=%d CHANNELLEN=%d "
47	"NETWORK=BitlBee SAFELIST CASEMAPPING=rfc1459 MAXTARGETS=1 WATCH=128 "
48	":are supported by this server",
49	CTYPES, CMODES, MAX_NICK_LENGTH - 1, MAX_NICK_LENGTH - 1 );
50	irc_send_motd( irc );
51	}
52
53	void irc_send_motd( irc_t *irc )
54	{
55	int fd;
56
57	fd = open( global.conf->motdfile, O_RDONLY );
58	if( fd == -1 )
59	{
60	irc_send_num( irc, 422, ":We don't need MOTDs." );
61	}
62	else
63	{
64	char linebuf[80]; /* Max. line length for MOTD's is 79 chars. It's what most IRC networks seem to do. */
65	char *add, max;
66	int len;
67
68	linebuf[79] = len = 0;
69	max = sizeof( linebuf ) - 1;
70
71	irc_send_num( irc, 375, ":- %s Message Of The Day - ", irc->root->host );
72	while( read( fd, linebuf + len, 1 ) == 1 )
73	{
74	if( linebuf[len] == '\n' \|\| len == max )
75	{
76	linebuf[len] = 0;
77	irc_send_num( irc, 372, ":- %s", linebuf );
78	len = 0;
79	}
80	else if( linebuf[len] == '%' )
81	{
82	read( fd, linebuf + len, 1 );
83	if( linebuf[len] == 'h' )
84	add = irc->root->host;
85	else if( linebuf[len] == 'v' )
86	add = BITLBEE_VERSION;
87	else if( linebuf[len] == 'n' )
88	add = irc->user->nick;
89	else
90	add = "%";
91
92	strncpy( linebuf + len, add, max - len );
93	while( linebuf[++len] );
94	}
95	else if( len < max )
96	{
97	len ++;
98	}
99	}
100	irc_send_num( irc, 376, ":End of MOTD" );
101	close( fd );
102	}
103	}
104
105	void irc_usermsg( irc_t irc, char format, ... )
106	{
107	irc_channel_t *ic = NULL;
108	irc_user_t *iu = irc->root;
109	char text[1024];
110	va_list params;
111	char *dst;
112
113	va_start( params, format );
114	g_vsnprintf( text, sizeof( text ), format, params );
115	va_end( params );
116
117	/* Too similar to bee_irc_user_msg()... */
118	if( iu->last_channel )
119	{
120	if( iu->last_channel->flags & IRC_CHANNEL_JOINED )
121	ic = iu->last_channel;
122	else if( irc->default_channel->flags & IRC_CHANNEL_JOINED )
123	ic = irc->default_channel;
124	}
125
126	if( ic )
127	dst = ic->name;
128	else
129	dst = irc->user->nick;
130
131	irc_send_msg( irc->root, "PRIVMSG", dst, text, NULL );
132	}
133
134	void irc_send_join( irc_channel_t ic, irc_user_t iu )
135	{
136	irc_t *irc = ic->irc;
137
138	irc_write( irc, ":%s!%s@%s JOIN :%s", iu->nick, iu->user, iu->host, ic->name );
139
140	if( iu == irc->user )
141	{
142	irc_write( irc, ":%s MODE %s +%s", irc->root->host, ic->name, ic->mode );
143	irc_send_names( ic );
144	if( ic->topic && *ic->topic )
145	irc_send_topic( ic, FALSE );
146	}
147	}
148
149	void irc_send_part( irc_channel_t ic, irc_user_t iu, const char *reason )
150	{
151	irc_write( ic->irc, ":%s!%s@%s PART %s :%s", iu->nick, iu->user, iu->host, ic->name, reason ? : "" );
152	}
153
154	void irc_send_quit( irc_user_t iu, const char reason )
155	{
156	irc_write( iu->irc, ":%s!%s@%s QUIT :%s", iu->nick, iu->user, iu->host, reason ? : "" );
157	}
158
159	void irc_send_kick( irc_channel_t ic, irc_user_t iu, irc_user_t kicker, const char reason )
160	{
161	irc_write( ic->irc, ":%s!%s@%s KICK %s %s :%s", kicker->nick, kicker->user,
162	kicker->host, ic->name, iu->nick, reason ? : "" );
163	}
164
165	void irc_send_names( irc_channel_t *ic )
166	{
167	GSList *l;
168	char namelist[385] = "";
169
170	/* RFCs say there is no error reply allowed on NAMES, so when the
171	channel is invalid, just give an empty reply. */
172	for( l = ic->users; l; l = l->next )
173	{
174	irc_channel_user_t *icu = l->data;
175	irc_user_t *iu = icu->iu;
176
177	if( strlen( namelist ) + strlen( iu->nick ) > sizeof( namelist ) - 4 )
178	{
179	irc_send_num( ic->irc, 353, "= %s :%s", ic->name, namelist );
180	*namelist = 0;
181	}
182
183	if( icu->flags & IRC_CHANNEL_USER_OP )
184	strcat( namelist, "@" );
185	else if( icu->flags & IRC_CHANNEL_USER_HALFOP )
186	strcat( namelist, "%" );
187	else if( icu->flags & IRC_CHANNEL_USER_VOICE )
188	strcat( namelist, "+" );
189
190	strcat( namelist, iu->nick );
191	strcat( namelist, " " );
192	}
193
194	if( *namelist )
195	irc_send_num( ic->irc, 353, "= %s :%s", ic->name, namelist );
196
197	irc_send_num( ic->irc, 366, "%s :End of /NAMES list", ic->name );
198	}
199
200	void irc_send_topic( irc_channel_t *ic, gboolean topic_change )
201	{
202	if( topic_change && ic->topic_who )
203	{
204	irc_write( ic->irc, ":%s TOPIC %s :%s", ic->topic_who,
205	ic->name, ic->topic && *ic->topic ? ic->topic : "" );
206	}
207	else if( ic->topic )
208	{
209	irc_send_num( ic->irc, 332, "%s :%s", ic->name, ic->topic );
210	if( ic->topic_who )
211	irc_send_num( ic->irc, 333, "%s %s %d",
212	ic->name, ic->topic_who, (int) ic->topic_time );
213	}
214	else
215	irc_send_num( ic->irc, 331, "%s :No topic for this channel", ic->name );
216	}
217
218	void irc_send_whois( irc_user_t *iu )
219	{
220	irc_t *irc = iu->irc;
221
222	irc_send_num( irc, 311, "%s %s %s * :%s",
223	iu->nick, iu->user, iu->host, iu->fullname );
224
225	if( iu->bu )
226	{
227	bee_user_t *bu = iu->bu;
228
229	irc_send_num( irc, 312, "%s %s.%s :%s network", iu->nick, bu->ic->acc->user,
230	bu->ic->acc->server && *bu->ic->acc->server ? bu->ic->acc->server : "",
231	bu->ic->acc->prpl->name );
232
233	if( ( bu->status && *bu->status ) \|\|
234	( bu->status_msg && *bu->status_msg ) )
235	{
236	int num = bu->flags & BEE_USER_AWAY ? 301 : 320;
237
238	if( bu->status && bu->status_msg )
239	irc_send_num( irc, num, "%s :%s (%s)", iu->nick, bu->status, bu->status_msg );
240	else
241	irc_send_num( irc, num, "%s :%s", iu->nick, bu->status ? : bu->status_msg );
242	}
243	else if( !( bu->flags & BEE_USER_ONLINE ) )
244	{
245	irc_send_num( irc, 301, "%s :%s", iu->nick, "User is offline" );
246	}
247
248	if( bu->idle_time \|\| bu->login_time )
249	{
250	irc_send_num( irc, 317, "%s %d %d :seconds idle, signon time",
251	iu->nick,
252	bu->idle_time ? (int) ( time( NULL ) - bu->idle_time ) : 0,
253	(int) bu->login_time );
254	}
255	}
256	else
257	{
258	irc_send_num( irc, 312, "%s %s :%s", iu->nick, irc->root->host, IRCD_INFO );
259	}
260
261	irc_send_num( irc, 318, "%s :End of /WHOIS list", iu->nick );
262	}
263
264	void irc_send_who( irc_t irc, GSList l, const char *channel )
265	{
266	gboolean is_channel = strcmp( channel, "**" ) != 0;
267
268	while( l )
269	{
270	irc_user_t *iu = l->data;
271	if( is_channel )
272	iu = ((irc_channel_user_t*)iu)->iu;
273	/* TODO(wilmer): Restore away/channel information here */
274	irc_send_num( irc, 352, "%s %s %s %s %s %c :0 %s",
275	channel ? : "*", iu->user, iu->host, irc->root->host,
276	iu->nick, iu->flags & IRC_USER_AWAY ? 'G' : 'H',
277	iu->fullname );
278	l = l->next;
279	}
280
281	irc_send_num( irc, 315, "%s :End of /WHO list", channel );
282	}
283
284	void irc_send_msg( irc_user_t iu, const char type, const char dst, const char msg, const char *prefix )
285	{
286	char last = 0;
287	const char s = msg, line = msg;
288	char raw_msg[strlen(msg)+1024];
289
290	while( !last )
291	{
292	if( s == '\r' && (s+1) == '\n' )
293	s++;
294	if( *s == '\n' )
295	{
296	last = s[1] == 0;
297	}
298	else
299	{
300	last = s[0] == 0;
301	}
302	if( s == 0 \|\| s == '\n' )
303	{
304	if( g_strncasecmp( line, "/me ", 4 ) == 0 && ( !prefix \|\| !*prefix ) &&
305	g_strcasecmp( type, "PRIVMSG" ) == 0 )
306	{
307	strcpy( raw_msg, "\001ACTION " );
308	strncat( raw_msg, line + 4, s - line - 4 );
309	strcat( raw_msg, "\001" );
310	irc_send_msg_raw( iu, type, dst, raw_msg );
311	}
312	else
313	{
314	*raw_msg = '\0';
315	if( prefix && *prefix )
316	strcpy( raw_msg, prefix );
317	strncat( raw_msg, line, s - line );
318	irc_send_msg_raw( iu, type, dst, raw_msg );
319	}
320	line = s + 1;
321	}
322	s ++;
323	}
324	}
325
326	void irc_send_msg_raw( irc_user_t iu, const char type, const char dst, const char msg )
327	{
328	irc_write( iu->irc, ":%s!%s@%s %s %s :%s",
329	iu->nick, iu->user, iu->host, type, dst, msg );
330	}
331
332	void irc_send_msg_f( irc_user_t iu, const char type, const char dst, const char format, ... )
333	{
334	char text[IRC_MAX_LINE];
335	va_list params;
336
337	va_start( params, format );
338	g_vsnprintf( text, IRC_MAX_LINE, format, params );
339	va_end( params );
340
341	irc_write( iu->irc, ":%s!%s@%s %s %s :%s",
342	iu->nick, iu->user, iu->host, type, dst, text );
343	}
344
345	void irc_send_nick( irc_user_t iu, const char new )
346	{
347	irc_write( iu->irc, ":%s!%s@%s NICK %s",
348	iu->nick, iu->user, iu->host, new );
349	}
350
351	/* Send an update of a user's mode inside a channel, compared to what it was. */
352	void irc_send_channel_user_mode_diff( irc_channel_t ic, irc_user_t iu,
353	irc_channel_user_flags_t old, irc_channel_user_flags_t new )
354	{
355	char changes[3*(5+strlen(iu->nick))];
356	char from[strlen(ic->irc->root->nick)+strlen(ic->irc->root->user)+strlen(ic->irc->root->host)+3];
357	int n;
358
359	*changes = '\0'; n = 0;
360	if( ( old & IRC_CHANNEL_USER_OP ) != ( new & IRC_CHANNEL_USER_OP ) )
361	{
362	n ++;
363	if( new & IRC_CHANNEL_USER_OP )
364	strcat( changes, "+o" );
365	else
366	strcat( changes, "-o" );
367	}
368	if( ( old & IRC_CHANNEL_USER_HALFOP ) != ( new & IRC_CHANNEL_USER_HALFOP ) )
369	{
370	n ++;
371	if( new & IRC_CHANNEL_USER_HALFOP )
372	strcat( changes, "+h" );
373	else
374	strcat( changes, "-h" );
375	}
376	if( ( old & IRC_CHANNEL_USER_VOICE ) != ( new & IRC_CHANNEL_USER_VOICE ) )
377	{
378	n ++;
379	if( new & IRC_CHANNEL_USER_VOICE )
380	strcat( changes, "+v" );
381	else
382	strcat( changes, "-v" );
383	}
384	while( n )
385	{
386	strcat( changes, " " );
387	strcat( changes, iu->nick );
388	n --;
389	}
390
391	if( set_getbool( &ic->irc->b->set, "simulate_netsplit" ) )
392	g_snprintf( from, sizeof( from ), "%s", ic->irc->root->host );
393	else
394	g_snprintf( from, sizeof( from ), "%s!%s@%s", ic->irc->root->nick,
395	ic->irc->root->user, ic->irc->root->host );
396
397	if( *changes )
398	irc_write( ic->irc, ":%s MODE %s %s", from, ic->name, changes );
399	}

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