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source: irc_commands.c @ 9a57b1f

Last change on this file since 9a57b1f was 14df98f, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-06-11T23:22:23Z
Aaaaaargh! Who thought it'd be a good idea to make 8-bit integers signed?? NOW? WHO? Anyway, this bug was causing not only chars < ' ' to be stripped, but also anything with the highest bit set. (I.e. anything non-ASCII.)
Property mode set to `100644`
File size: 21.1 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	/* IRC commands */
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	#define BITLBEE_CORE
27	#include "bitlbee.h"
28	#include "help.h"
29	#include "ipc.h"
30
31	static void irc_cmd_pass( irc_t irc, char *cmd )
32	{
33	if( irc->status & USTATUS_LOGGED_IN )
34	{
35	char *send_cmd[] = { "identify", cmd[1], NULL };
36
37	/* We're already logged in, this client seems to send the PASS
38	command last. (Possibly it won't send it at all if it turns
39	out we don't require it, which will break this feature.)
40	Try to identify using the given password. */
41	root_command( irc, send_cmd );
42	return;
43	}
44	/* Handling in pre-logged-in state, first see if this server is
45	password-protected: */
46	else if( global.conf->auth_pass &&
47	( strncmp( global.conf->auth_pass, "md5:", 4 ) == 0 ?
48	md5_verify_password( cmd[1], global.conf->auth_pass + 4 ) == 0 :
49	strcmp( cmd[1], global.conf->auth_pass ) == 0 ) )
50	{
51	irc->status \|= USTATUS_AUTHORIZED;
52	irc_check_login( irc );
53	}
54	else if( global.conf->auth_pass )
55	{
56	irc_send_num( irc, 464, ":Incorrect password" );
57	}
58	else
59	{
60	/* Remember the password and try to identify after USER/NICK. */
61	irc_setpass( irc, cmd[1] );
62	irc_check_login( irc );
63	}
64	}
65
66	static void irc_cmd_user( irc_t irc, char *cmd )
67	{
68	irc->user->user = g_strdup( cmd[1] );
69	irc->user->fullname = g_strdup( cmd[4] );
70
71	irc_check_login( irc );
72	}
73
74	static void irc_cmd_nick( irc_t irc, char *cmd )
75	{
76	irc_user_t *iu;
77
78	if( ( iu = irc_user_by_name( irc, cmd[1] ) ) && iu != irc->user )
79	{
80	irc_send_num( irc, 433, "%s :This nick is already in use", cmd[1] );
81	}
82	else if( !nick_ok( cmd[1] ) )
83	{
84	/* [SH] Invalid characters. */
85	irc_send_num( irc, 432, "%s :This nick contains invalid characters", cmd[1] );
86	}
87	else if( irc->status & USTATUS_LOGGED_IN )
88	{
89	if( irc->status & USTATUS_IDENTIFIED )
90	{
91	irc_setpass( irc, NULL );
92	irc->status &= ~USTATUS_IDENTIFIED;
93	irc_umode_set( irc, "-R", 1 );
94	irc_usermsg( irc, "Changing nicks resets your identify status. "
95	"Re-identify or register a new account if you want "
96	"your configuration to be saved. See \x02help "
97	"nick_changes\x02." );
98	}
99
100	irc_user_set_nick( irc->user, cmd[1] );
101	}
102	else
103	{
104	g_free( irc->user->nick );
105	irc->user->nick = g_strdup( cmd[1] );
106
107	irc_check_login( irc );
108	}
109	}
110
111	static void irc_cmd_quit( irc_t irc, char *cmd )
112	{
113	if( cmd[1] && *cmd[1] )
114	irc_abort( irc, 0, "Quit: %s", cmd[1] );
115	else
116	irc_abort( irc, 0, "Leaving..." );
117	}
118
119	static void irc_cmd_ping( irc_t irc, char *cmd )
120	{
121	irc_write( irc, ":%s PONG %s :%s", irc->root->host,
122	irc->root->host, cmd[1]?cmd[1]:irc->root->host );
123	}
124
125	static void irc_cmd_pong( irc_t irc, char *cmd )
126	{
127	/* We could check the value we get back from the user, but in
128	fact we don't care, we're just happy s/he's still alive. */
129	irc->last_pong = gettime();
130	irc->pinging = 0;
131	}
132
133	static void irc_cmd_join( irc_t irc, char *cmd )
134	{
135	char comma, s = cmd[1];
136
137	while( s )
138	{
139	irc_channel_t *ic;
140
141	if( ( comma = strchr( s, ',' ) ) )
142	*comma = '\0';
143
144	if( ( ic = irc_channel_by_name( irc, s ) ) == NULL &&
145	( ic = irc_channel_new( irc, s ) ) )
146	{
147	if( strcmp( set_getstr( &ic->set, "type" ), "control" ) != 0 )
148	{
149	/* Autoconfiguration is for control channels only ATM. */
150	}
151	else if( bee_group_by_name( ic->irc->b, ic->name + 1, FALSE ) )
152	{
153	set_setstr( &ic->set, "group", ic->name + 1 );
154	set_setstr( &ic->set, "fill_by", "group" );
155	}
156	else if( set_setstr( &ic->set, "protocol", ic->name + 1 ) )
157	{
158	set_setstr( &ic->set, "fill_by", "protocol" );
159	}
160	else if( set_setstr( &ic->set, "account", ic->name + 1 ) )
161	{
162	set_setstr( &ic->set, "fill_by", "account" );
163	}
164	else
165	{
166	/* The set commands above will run this already,
167	but if we didn't hit any, we have to fill the
168	channel with the default population. */
169	bee_irc_channel_update( ic->irc, ic, NULL );
170	}
171	}
172	else if( ic == NULL )
173	{
174	irc_send_num( irc, 479, "%s :Invalid channel name", s );
175	goto next;
176	}
177
178	if( ic->flags & IRC_CHANNEL_JOINED )
179	/* Dude, you're already there...
180	RFC doesn't have any reply for that though? */
181	goto next;
182
183	if( ic->f->join && !ic->f->join( ic ) )
184	/* The story is: FALSE either means the handler
185	showed an error message, or is doing some work
186	before the join should be confirmed. (In the
187	latter case, the caller should take care of that
188	confirmation.) TRUE means all's good, let the
189	user join the channel right away. */
190	goto next;
191
192	irc_channel_add_user( ic, irc->user );
193
194	next:
195	if( comma )
196	{
197	s = comma + 1;
198	*comma = ',';
199	}
200	else
201	break;
202	}
203	}
204
205	static void irc_cmd_names( irc_t irc, char *cmd )
206	{
207	irc_channel_t *ic;
208
209	if( cmd[1] && ( ic = irc_channel_by_name( irc, cmd[1] ) ) )
210	irc_send_names( ic );
211	/* With no args, we should show /names of all chans. Make the code
212	below work well if necessary.
213	else
214	{
215	GSList *l;
216
217	for( l = irc->channels; l; l = l->next )
218	irc_send_names( l->data );
219	}
220	*/
221	}
222
223	static void irc_cmd_part( irc_t irc, char *cmd )
224	{
225	irc_channel_t *ic;
226
227	if( ( ic = irc_channel_by_name( irc, cmd[1] ) ) == NULL )
228	{
229	irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
230	}
231	else if( irc_channel_del_user( ic, irc->user, IRC_CDU_PART, cmd[2] ) )
232	{
233	if( ic->f->part )
234	ic->f->part( ic, NULL );
235	}
236	else
237	{
238	irc_send_num( irc, 442, "%s :You're not on that channel", cmd[1] );
239	}
240	}
241
242	static void irc_cmd_whois( irc_t irc, char *cmd )
243	{
244	char *nick = cmd[1];
245	irc_user_t *iu = irc_user_by_name( irc, nick );
246
247	if( iu )
248	irc_send_whois( iu );
249	else
250	irc_send_num( irc, 401, "%s :Nick does not exist", nick );
251	}
252
253	static void irc_cmd_whowas( irc_t irc, char *cmd )
254	{
255	/* For some reason irssi tries a whowas when whois fails. We can
256	ignore this, but then the user never gets a "user not found"
257	message from irssi which is a bit annoying. So just respond
258	with not-found and irssi users will get better error messages */
259
260	irc_send_num( irc, 406, "%s :Nick does not exist", cmd[1] );
261	irc_send_num( irc, 369, "%s :End of WHOWAS", cmd[1] );
262	}
263
264	static void irc_cmd_motd( irc_t irc, char *cmd )
265	{
266	irc_send_motd( irc );
267	}
268
269	static void irc_cmd_mode( irc_t irc, char *cmd )
270	{
271	if( irc_channel_name_ok( cmd[1] ) )
272	{
273	irc_channel_t *ic;
274
275	if( ( ic = irc_channel_by_name( irc, cmd[1] ) ) == NULL )
276	irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
277	else if( cmd[2] )
278	{
279	if( cmd[2] == '+' \|\| cmd[2] == '-' )
280	irc_send_num( irc, 477, "%s :Can't change channel modes", cmd[1] );
281	else if( *cmd[2] == 'b' )
282	irc_send_num( irc, 368, "%s :No bans possible", cmd[1] );
283	}
284	else
285	irc_send_num( irc, 324, "%s +%s", cmd[1], ic->mode );
286	}
287	else
288	{
289	if( nick_cmp( cmd[1], irc->user->nick ) == 0 )
290	{
291	if( cmd[2] )
292	irc_umode_set( irc, cmd[2], 0 );
293	else
294	irc_send_num( irc, 221, "+%s", irc->umode );
295	}
296	else
297	irc_send_num( irc, 502, ":Don't touch their modes" );
298	}
299	}
300
301	static void irc_cmd_who( irc_t irc, char *cmd )
302	{
303	char *channel = cmd[1];
304	irc_channel_t *ic;
305	irc_user_t *iu;
306
307	if( !channel \|\| channel == '0' \|\| channel == '' \|\| !channel )
308	irc_send_who( irc, irc->users, "**" );
309	else if( ( ic = irc_channel_by_name( irc, channel ) ) )
310	irc_send_who( irc, ic->users, channel );
311	else if( ( iu = irc_user_by_name( irc, channel ) ) )
312	{
313	/* Tiny hack! */
314	GSList *l = g_slist_append( NULL, iu );
315	irc_send_who( irc, l, channel );
316	g_slist_free( l );
317	}
318	else
319	irc_send_num( irc, 403, "%s :No such channel", channel );
320	}
321
322	static void irc_cmd_privmsg( irc_t irc, char *cmd )
323	{
324	irc_channel_t *ic;
325	irc_user_t *iu;
326
327	if( !cmd[2] )
328	{
329	irc_send_num( irc, 412, ":No text to send" );
330	return;
331	}
332
333	/* Don't treat CTCP actions as real CTCPs, just convert them right now. */
334	if( g_strncasecmp( cmd[2], "\001ACTION", 7 ) == 0 )
335	{
336	cmd[2] += 4;
337	memcpy( cmd[2], "/me", 3 );
338	if( cmd[2][strlen(cmd[2])-1] == '\001' )
339	cmd[2][strlen(cmd[2])-1] = '\0';
340	}
341
342	if( irc_channel_name_ok( cmd[1] ) &&
343	( ic = irc_channel_by_name( irc, cmd[1] ) ) )
344	{
345	if( cmd[2][0] == '\001' )
346	{
347	/* CTCPs to channels? Nah. Maybe later. */
348	}
349	else if( ic->f->privmsg )
350	ic->f->privmsg( ic, cmd[2] );
351	}
352	else if( ( iu = irc_user_by_name( irc, cmd[1] ) ) )
353	{
354	if( cmd[2][0] == '\001' )
355	{
356	char **ctcp;
357
358	if( iu->f->ctcp == NULL )
359	return;
360	if( cmd[2][strlen(cmd[2])-1] == '\001' )
361	cmd[2][strlen(cmd[2])-1] = '\0';
362
363	ctcp = split_command_parts( cmd[2] + 1 );
364	iu->f->ctcp( iu, ctcp );
365	}
366	else if( iu->f->privmsg )
367	{
368	iu->last_channel = NULL;
369	iu->f->privmsg( iu, cmd[2] );
370	}
371	}
372	else
373	{
374	irc_send_num( irc, 401, "%s :No such nick/channel", cmd[1] );
375	}
376	}
377
378	static void irc_cmd_notice( irc_t irc, char *cmd )
379	{
380	if( !cmd[2] )
381	{
382	irc_send_num( irc, 412, ":No text to send" );
383	return;
384	}
385
386	/* At least for now just echo. IIRC some IRC clients use self-notices
387	for lag checks, so try to support that. */
388	if( nick_cmp( cmd[1], irc->user->nick ) == 0 )
389	irc_send_msg( irc->user, "NOTICE", irc->user->nick, cmd[2], NULL );
390	}
391
392	static void irc_cmd_nickserv( irc_t irc, char *cmd )
393	{
394	/* [SH] This aliases the NickServ command to PRIVMSG root */
395	/* [TV] This aliases the NS command to PRIVMSG root as well */
396	root_command( irc, cmd + 1 );
397	}
398
399	static void irc_cmd_oper_hack( irc_t irc, char *cmd );
400
401	static void irc_cmd_oper( irc_t irc, char *cmd )
402	{
403	/* Very non-standard evil but useful/secure hack, see below. */
404	if( irc->status & OPER_HACK_ANY )
405	return irc_cmd_oper_hack( irc, cmd );
406
407	if( global.conf->oper_pass &&
408	( strncmp( global.conf->oper_pass, "md5:", 4 ) == 0 ?
409	md5_verify_password( cmd[2], global.conf->oper_pass + 4 ) == 0 :
410	strcmp( cmd[2], global.conf->oper_pass ) == 0 ) )
411	{
412	irc_umode_set( irc, "+o", 1 );
413	irc_send_num( irc, 381, ":Password accepted" );
414	}
415	else
416	{
417	irc_send_num( irc, 491, ":Incorrect password" );
418	}
419	}
420
421	static void irc_cmd_oper_hack( irc_t irc, char *cmd )
422	{
423	char *password = g_strjoinv( " ", cmd + 2 );
424
425	/* /OPER can now also be used to enter IM/identify passwords without
426	echoing. It's a hack but the extra password security is worth it. */
427	if( irc->status & OPER_HACK_ACCOUNT_ADD )
428	{
429	account_t *a;
430
431	for( a = irc->b->accounts; a; a = a->next )
432	if( strcmp( a->pass, PASSWORD_PENDING ) == 0 )
433	{
434	set_setstr( &a->set, "password", password );
435	irc_usermsg( irc, "Password added to IM account "
436	"%s(%s)", a->prpl->name, a->user );
437	/* The IRC client may expect this. 491 suggests the OPER
438	password was wrong, so the client won't expect a +o.
439	It may however repeat the password prompt. We'll see. */
440	irc_send_num( irc, 491, ":Password added to IM account "
441	"%s(%s)", a->prpl->name, a->user );
442	}
443	}
444	else if( irc->status & OPER_HACK_IDENTIFY )
445	{
446	char *send_cmd[] = { "identify", password, NULL };
447	irc_send_num( irc, 491, ":Trying to identify" );
448	root_command( irc, send_cmd );
449	}
450	else if( irc->status & OPER_HACK_REGISTER )
451	{
452	char *send_cmd[] = { "register", password, NULL };
453	irc_send_num( irc, 491, ":Trying to identify" );
454	root_command( irc, send_cmd );
455	}
456
457	irc->status &= ~OPER_HACK_ANY;
458	g_free( password );
459	}
460
461	static void irc_cmd_invite( irc_t irc, char *cmd )
462	{
463	irc_channel_t *ic;
464	irc_user_t *iu;
465
466	if( ( iu = irc_user_by_name( irc, cmd[1] ) ) == NULL )
467	{
468	irc_send_num( irc, 401, "%s :No such nick", cmd[1] );
469	return;
470	}
471	else if( ( ic = irc_channel_by_name( irc, cmd[2] ) ) == NULL )
472	{
473	irc_send_num( irc, 403, "%s :No such channel", cmd[2] );
474	return;
475	}
476
477	if( !ic->f->invite )
478	irc_send_num( irc, 482, "%s :Can't invite people here", cmd[2] );
479	else if( ic->f->invite( ic, iu ) )
480	irc_send_num( irc, 341, "%s %s", iu->nick, ic->name );
481	}
482
483	static void irc_cmd_userhost( irc_t irc, char *cmd )
484	{
485	int i;
486
487	/* [TV] Usable USERHOST-implementation according to
488	RFC1459. Without this, mIRC shows an error
489	while connecting, and the used way of rejecting
490	breaks standards.
491	*/
492
493	for( i = 1; cmd[i]; i ++ )
494	{
495	irc_user_t *iu = irc_user_by_name( irc, cmd[i] );
496
497	if( iu )
498	irc_send_num( irc, 302, ":%s=%c%s@%s", iu->nick,
499	irc_user_get_away( iu ) ? '-' : '+',
500	iu->user, iu->host );
501	}
502	}
503
504	static void irc_cmd_ison( irc_t irc, char *cmd )
505	{
506	char buff[IRC_MAX_LINE];
507	int lenleft, i;
508
509	buff[0] = '\0';
510
511	/* [SH] Leave room for : and \0 */
512	lenleft = IRC_MAX_LINE - 2;
513
514	for( i = 1; cmd[i]; i ++ )
515	{
516	char this, next;
517
518	this = cmd[i];
519	while( *this )
520	{
521	irc_user_t *iu;
522
523	if( ( next = strchr( this, ' ' ) ) )
524	*next = 0;
525
526	if( ( iu = irc_user_by_name( irc, this ) ) &&
527	iu->bu && iu->bu->flags & BEE_USER_ONLINE )
528	{
529	lenleft -= strlen( iu->nick ) + 1;
530
531	if( lenleft < 0 )
532	break;
533
534	strcat( buff, iu->nick );
535	strcat( buff, " " );
536	}
537
538	if( next )
539	{
540	*next = ' ';
541	this = next + 1;
542	}
543	else
544	{
545	break;
546	}
547	}
548
549	/* sigh */
550	if( lenleft < 0 )
551	break;
552	}
553
554	if( strlen( buff ) > 0 )
555	buff[strlen(buff)-1] = '\0';
556
557	irc_send_num( irc, 303, ":%s", buff );
558	}
559
560	static void irc_cmd_watch( irc_t irc, char *cmd )
561	{
562	int i;
563
564	/* Obviously we could also mark a user structure as being
565	watched, but what if the WATCH command is sent right
566	after connecting? The user won't exist yet then... */
567	for( i = 1; cmd[i]; i ++ )
568	{
569	char *nick;
570	irc_user_t *iu;
571
572	if( !cmd[i][0] \|\| !cmd[i][1] )
573	break;
574
575	nick = g_strdup( cmd[i] + 1 );
576	nick_lc( nick );
577
578	iu = irc_user_by_name( irc, nick );
579
580	if( cmd[i][0] == '+' )
581	{
582	if( !g_hash_table_lookup( irc->watches, nick ) )
583	g_hash_table_insert( irc->watches, nick, nick );
584
585	if( iu && iu->bu && iu->bu->flags & BEE_USER_ONLINE )
586	irc_send_num( irc, 604, "%s %s %s %d :%s", iu->nick, iu->user,
587	iu->host, (int) time( NULL ), "is online" );
588	else
589	irc_send_num( irc, 605, "%s %s %s %d :%s", nick, "", "",
590	(int) time( NULL ), "is offline" );
591	}
592	else if( cmd[i][0] == '-' )
593	{
594	gpointer okey, ovalue;
595
596	if( g_hash_table_lookup_extended( irc->watches, nick, &okey, &ovalue ) )
597	{
598	g_hash_table_remove( irc->watches, okey );
599	g_free( okey );
600
601	irc_send_num( irc, 602, "%s %s %s %d :%s", nick, "", "", 0, "Stopped watching" );
602	}
603	}
604	}
605	}
606
607	static void irc_cmd_topic( irc_t irc, char *cmd )
608	{
609	irc_channel_t *ic = irc_channel_by_name( irc, cmd[1] );
610	const char *new = cmd[2];
611
612	if( ic == NULL )
613	{
614	irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
615	}
616	else if( new )
617	{
618	if( ic->f->topic == NULL )
619	irc_send_num( irc, 482, "%s :Can't change this channel's topic", ic->name );
620	else if( ic->f->topic( ic, new ) )
621	irc_send_topic( ic, TRUE );
622	}
623	else
624	{
625	irc_send_topic( ic, FALSE );
626	}
627	}
628
629	static void irc_cmd_away( irc_t irc, char *cmd )
630	{
631	if( cmd[1] && *cmd[1] )
632	{
633	char away[strlen(cmd[1])+1];
634	int i, j;
635
636	/* Copy away string, but skip control chars. Mainly because
637	Jabber really doesn't like them. */
638	for( i = j = 0; cmd[1][i]; i ++ )
639	if( (unsigned char) ( away[j] = cmd[1][i] ) >= ' ' )
640	j ++;
641	away[j] = '\0';
642
643	irc_send_num( irc, 306, ":You're now away: %s", away );
644	set_setstr( &irc->b->set, "away", away );
645	}
646	else
647	{
648	irc_send_num( irc, 305, ":Welcome back" );
649	set_setstr( &irc->b->set, "away", NULL );
650	}
651	}
652
653	static void irc_cmd_list( irc_t irc, char *cmd )
654	{
655	GSList *l;
656
657	for( l = irc->channels; l; l = l->next )
658	{
659	irc_channel_t *ic = l->data;
660
661	irc_send_num( irc, 322, "%s %d :%s",
662	ic->name, g_slist_length( ic->users ), ic->topic ? : "" );
663	}
664	irc_send_num( irc, 323, ":%s", "End of /LIST" );
665	}
666
667	static void irc_cmd_version( irc_t irc, char *cmd )
668	{
669	irc_send_num( irc, 351, "bitlbee-%s. %s :%s/%s ",
670	BITLBEE_VERSION, irc->root->host, ARCH, CPU );
671	}
672
673	static void irc_cmd_completions( irc_t irc, char *cmd )
674	{
675	help_t *h;
676	set_t *s;
677	int i;
678
679	irc_send_msg_raw( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS OK" );
680
681	for( i = 0; root_commands[i].command; i ++ )
682	irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS %s", root_commands[i].command );
683
684	for( h = global.help; h; h = h->next )
685	irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS help %s", h->title );
686
687	for( s = irc->b->set; s; s = s->next )
688	irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS set %s", s->key );
689
690	irc_send_msg_raw( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS END" );
691	}
692
693	static void irc_cmd_rehash( irc_t irc, char *cmd )
694	{
695	if( global.conf->runmode == RUNMODE_INETD )
696	ipc_master_cmd_rehash( NULL, NULL );
697	else
698	ipc_to_master( cmd );
699
700	irc_send_num( irc, 382, "%s :Rehashing", global.conf_file );
701	}
702
703	static const command_t irc_commands[] = {
704	{ "pass", 1, irc_cmd_pass, 0 },
705	{ "user", 4, irc_cmd_user, IRC_CMD_PRE_LOGIN },
706	{ "nick", 1, irc_cmd_nick, 0 },
707	{ "quit", 0, irc_cmd_quit, 0 },
708	{ "ping", 0, irc_cmd_ping, 0 },
709	{ "pong", 0, irc_cmd_pong, IRC_CMD_LOGGED_IN },
710	{ "join", 1, irc_cmd_join, IRC_CMD_LOGGED_IN },
711	{ "names", 1, irc_cmd_names, IRC_CMD_LOGGED_IN },
712	{ "part", 1, irc_cmd_part, IRC_CMD_LOGGED_IN },
713	{ "whois", 1, irc_cmd_whois, IRC_CMD_LOGGED_IN },
714	{ "whowas", 1, irc_cmd_whowas, IRC_CMD_LOGGED_IN },
715	{ "motd", 0, irc_cmd_motd, IRC_CMD_LOGGED_IN },
716	{ "mode", 1, irc_cmd_mode, IRC_CMD_LOGGED_IN },
717	{ "who", 0, irc_cmd_who, IRC_CMD_LOGGED_IN },
718	{ "privmsg", 1, irc_cmd_privmsg, IRC_CMD_LOGGED_IN },
719	{ "notice", 1, irc_cmd_notice, IRC_CMD_LOGGED_IN },
720	{ "nickserv", 1, irc_cmd_nickserv, IRC_CMD_LOGGED_IN },
721	{ "ns", 1, irc_cmd_nickserv, IRC_CMD_LOGGED_IN },
722	{ "away", 0, irc_cmd_away, IRC_CMD_LOGGED_IN },
723	{ "version", 0, irc_cmd_version, IRC_CMD_LOGGED_IN },
724	{ "completions", 0, irc_cmd_completions, IRC_CMD_LOGGED_IN },
725	{ "userhost", 1, irc_cmd_userhost, IRC_CMD_LOGGED_IN },
726	{ "ison", 1, irc_cmd_ison, IRC_CMD_LOGGED_IN },
727	{ "watch", 1, irc_cmd_watch, IRC_CMD_LOGGED_IN },
728	{ "invite", 2, irc_cmd_invite, IRC_CMD_LOGGED_IN },
729	{ "topic", 1, irc_cmd_topic, IRC_CMD_LOGGED_IN },
730	{ "oper", 2, irc_cmd_oper, IRC_CMD_LOGGED_IN },
731	{ "list", 0, irc_cmd_list, IRC_CMD_LOGGED_IN },
732	{ "die", 0, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
733	{ "deaf", 0, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
734	{ "wallops", 1, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
735	{ "wall", 1, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
736	{ "rehash", 0, irc_cmd_rehash, IRC_CMD_OPER_ONLY },
737	{ "restart", 0, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
738	{ "kill", 2, NULL, IRC_CMD_OPER_ONLY \| IRC_CMD_TO_MASTER },
739	{ NULL }
740	};
741
742	void irc_exec( irc_t irc, char cmd[] )
743	{
744	int i, n_arg;
745
746	if( !cmd[0] )
747	return;
748
749	for( i = 0; irc_commands[i].command; i++ )
750	if( g_strcasecmp( irc_commands[i].command, cmd[0] ) == 0 )
751	{
752	/* There should be no typo in the next line: */
753	for( n_arg = 0; cmd[n_arg]; n_arg ++ ); n_arg --;
754
755	if( irc_commands[i].flags & IRC_CMD_PRE_LOGIN && irc->status & USTATUS_LOGGED_IN )
756	{
757	irc_send_num( irc, 462, ":Only allowed before logging in" );
758	}
759	else if( irc_commands[i].flags & IRC_CMD_LOGGED_IN && !( irc->status & USTATUS_LOGGED_IN ) )
760	{
761	irc_send_num( irc, 451, ":Register first" );
762	}
763	else if( irc_commands[i].flags & IRC_CMD_OPER_ONLY && !strchr( irc->umode, 'o' ) )
764	{
765	irc_send_num( irc, 481, ":Permission denied - You're not an IRC operator" );
766	}
767	else if( n_arg < irc_commands[i].required_parameters )
768	{
769	irc_send_num( irc, 461, "%s :Need more parameters", cmd[0] );
770	}
771	else if( irc_commands[i].flags & IRC_CMD_TO_MASTER )
772	{
773	/* IPC doesn't make sense in inetd mode,
774	but the function will catch that. */
775	ipc_to_master( cmd );
776	}
777	else
778	{
779	irc_commands[i].execute( irc, cmd );
780	}
781
782	return;
783	}
784
785	if( irc->status & USTATUS_LOGGED_IN )
786	irc_send_num( irc, 421, "%s :Unknown command", cmd[0] );
787	}

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