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Date:: Wed Jan 8 22:03:21 2003 UTC
Message:: - Changed semantics of Client_SetAway().
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1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  * Please read the file COPYING, README and AUTHORS for more information.
10  *
11  * Client management.
12  */
13 
14 
15 #define __client_c__
16 
17 
18 #include "portab.h"
19 
20 static char UNUSED id[] = "$Id: client.c,v 1.72 2003/01/08 22:03:21 alex Exp $";
21 
22 #include "imp.h"
23 #include <assert.h>
24 #include <unistd.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <netdb.h>
29 
30 #include "conn.h"
31 
32 #include "exp.h"
33 #include "client.h"
34 
35 #include <imp.h>
36 #include "ngircd.h"
37 #include "channel.h"
38 #include "resolve.h"
39 #include "conf.h"
40 #include "hash.h"
41 #include "irc-write.h"
42 #include "log.h"
43 #include "messages.h"
44 
45 #include <exp.h>
46 
47 
48 #define GETID_LEN (CLIENT_NICK_LEN-1) + 1 + (CLIENT_USER_LEN-1) + 1 + (CLIENT_HOST_LEN-1) + 1
49 
50 
51 LOCAL CLIENT *This_Server, *My_Clients;
52 LOCAL CHAR GetID_Buffer[GETID_LEN];
53 
54 
55 LOCAL LONG Count PARAMS(( CLIENT_TYPE Type ));
56 LOCAL LONG MyCount PARAMS(( CLIENT_TYPE Type ));
57 
58 LOCAL CLIENT *New_Client_Struct PARAMS(( VOID ));
59 LOCAL VOID Generate_MyToken PARAMS(( CLIENT *Client ));
60 LOCAL VOID Adjust_Counters PARAMS(( CLIENT *Client ));
61 
62 
63 LONG Max_Users = 0, My_Max_Users = 0;
64 
65 
66 GLOBAL VOID
67 Client_Init( VOID )
68 {
69 	struct hostent *h;
70 	
71 	This_Server = New_Client_Struct( );
72 	if( ! This_Server )
73 	{
74 		Log( LOG_EMERG, "Can't allocate client structure for server! Going down." );
75 		Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
76 		exit( 1 );
77 	}
78 
79 	/* Client-Struktur dieses Servers */
80 	This_Server->next = NULL;
81 	This_Server->type = CLIENT_SERVER;
82 	This_Server->conn_id = NONE;
83 	This_Server->introducer = This_Server;
84 	This_Server->mytoken = 1;
85 	This_Server->hops = 0;
86 
87 	gethostname( This_Server->host, CLIENT_HOST_LEN );
88 	h = gethostbyname( This_Server->host );
89 	if( h ) strlcpy( This_Server->host, h->h_name, sizeof( This_Server->host ));
90 
91 	Client_SetID( This_Server, Conf_ServerName );
92 	Client_SetInfo( This_Server, Conf_ServerInfo );
93 
94 	My_Clients = This_Server;
95 } /* Client_Init */
96 
97 
98 GLOBAL VOID
99 Client_Exit( VOID )
100 {
101 	CLIENT *c, *next;
102 	INT cnt;
103 
104 	if( NGIRCd_SignalRestart ) Client_Destroy( This_Server, "Server going down (restarting).", NULL, FALSE );
105 	else Client_Destroy( This_Server, "Server going down.", NULL, FALSE );
106 	
107 	cnt = 0;
108 	c = My_Clients;
109 	while( c )
110 	{
111 		cnt++;
112 		next = (CLIENT *)c->next;
113 		free( c );
114 		c = next;
115 	}
116 	if( cnt ) Log( LOG_INFO, "Freed %d client structure%s.", cnt, cnt == 1 ? "" : "s" );
117 } /* Client_Exit */
118 
119 
120 GLOBAL CLIENT *
121 Client_ThisServer( VOID )
122 {
123 	return This_Server;
124 } /* Client_ThisServer */
125 
126 
127 GLOBAL CLIENT *
128 Client_NewLocal( CONN_ID Idx, CHAR *Hostname, INT Type, BOOLEAN Idented )
129 {
130 	/* Neuen lokalen Client erzeugen: Wrapper-Funktion fuer Client_New(). */
131 	return Client_New( Idx, This_Server, NULL, Type, NULL, NULL, Hostname, NULL, 0, 0, NULL, Idented );
132 } /* Client_NewLocal */
133 
134 
135 GLOBAL CLIENT *
136 Client_NewRemoteServer( CLIENT *Introducer, CHAR *Hostname, CLIENT *TopServer, INT Hops, INT Token, CHAR *Info, BOOLEAN Idented )
137 {
138 	/* Neuen Remote-Client erzeugen: Wrapper-Funktion fuer Client_New (). */
139 	return Client_New( NONE, Introducer, TopServer, CLIENT_SERVER, Hostname, NULL, Hostname, Info, Hops, Token, NULL, Idented );
140 } /* Client_NewRemoteServer */
141 
142 
143 GLOBAL CLIENT *
144 Client_NewRemoteUser( CLIENT *Introducer, CHAR *Nick, INT Hops, CHAR *User, CHAR *Hostname, INT Token, CHAR *Modes, CHAR *Info, BOOLEAN Idented )
145 {
146 	/* Neuen Remote-Client erzeugen: Wrapper-Funktion fuer Client_New (). */
147 	return Client_New( NONE, Introducer, NULL, CLIENT_USER, Nick, User, Hostname, Info, Hops, Token, Modes, Idented );
148 } /* Client_NewRemoteUser */
149 
150 
151 GLOBAL CLIENT *
152 Client_New( CONN_ID Idx, CLIENT *Introducer, CLIENT *TopServer, INT Type, CHAR *ID, CHAR *User, CHAR *Hostname, CHAR *Info, INT Hops, INT Token, CHAR *Modes, BOOLEAN Idented )
153 {
154 	CLIENT *client;
155 
156 	assert( Idx >= NONE );
157 	assert( Introducer != NULL );
158 	assert( Hostname != NULL );
159 
160 	client = New_Client_Struct( );
161 	if( ! client ) return NULL;
162 
163 	/* Initialisieren */
164 	client->conn_id = Idx;
165 	client->introducer = Introducer;
166 	client->topserver = TopServer;
167 	client->type = Type;
168 	if( ID ) Client_SetID( client, ID );
169 	if( User ) Client_SetUser( client, User, Idented );
170 	if( Hostname ) Client_SetHostname( client, Hostname );
171 	if( Info ) Client_SetInfo( client, Info );
172 	client->hops = Hops;
173 	client->token = Token;
174 	if( Modes ) Client_SetModes( client, Modes );
175 	if( Type == CLIENT_SERVER ) Generate_MyToken( client );
176 
177 	/* ist der User away? */
178 	if( strchr( client->modes, 'a' )) strlcpy( client->away, DEFAULT_AWAY_MSG, sizeof( client->away ));
179 
180 	/* Verketten */
181 	client->next = (POINTER *)My_Clients;
182 	My_Clients = client;
183 
184 	/* Adjust counters */
185 	Adjust_Counters( client );
186 
187 	return client;
188 } /* Client_New */
189 
190 
191 GLOBAL VOID
192 Client_Destroy( CLIENT *Client, CHAR *LogMsg, CHAR *FwdMsg, BOOLEAN SendQuit )
193 {
194 	/* Client entfernen. */
195 	
196 	CLIENT *last, *c;
197 	CHAR msg[LINE_LEN], *txt;
198 
199 	assert( Client != NULL );
200 
201 	if( LogMsg ) txt = LogMsg;
202 	else txt = FwdMsg;
203 	if( ! txt ) txt = "Reason unknown.";
204 
205 	/* Netz-Split-Nachricht vorbereiten (noch nicht optimal) */
206 	if( Client->type == CLIENT_SERVER ) snprintf( msg, sizeof( msg ), "%s: lost server %s", This_Server->id, Client->id );
207 
208 	last = NULL;
209 	c = My_Clients;
210 	while( c )
211 	{
212 		if(( Client->type == CLIENT_SERVER ) && ( c->introducer == Client ) && ( c != Client ))
213 		{
214 			/* der Client, der geloescht wird ist ein Server. Der Client, den wir gerade
215 			 * pruefen, ist ein Child von diesem und muss daher auch entfernt werden */
216 			Client_Destroy( c, NULL, msg, FALSE );
217 			last = NULL;
218 			c = My_Clients;
219 			continue;
220 		}
221 		if( c == Client )
222 		{
223 			/* Wir haben den Client gefunden: entfernen */
224 			if( last ) last->next = c->next;
225 			else My_Clients = (CLIENT *)c->next;
226 
227 			if( c->type == CLIENT_USER )
228 			{
229 				if( c->conn_id != NONE )
230 				{
231 					/* Ein lokaler User */
232 					Log( LOG_NOTICE, "User \"%s\" unregistered (connection %d): %s", Client_Mask( c ), c->conn_id, txt );
233 
234 					if( SendQuit )
235 					{
236 						/* Alle andere Server informieren! */
237 						if( FwdMsg ) IRC_WriteStrServersPrefix( NULL, c, "QUIT :%s", FwdMsg );
238 						else IRC_WriteStrServersPrefix( NULL, c, "QUIT :" );
239 					}
240 				}
241 				else
242 				{
243 					/* Remote User */
244 					Log( LOG_DEBUG, "User \"%s\" unregistered: %s", Client_Mask( c ), txt );
245 
246 					if( SendQuit )
247 					{
248 						/* Andere Server informieren, ausser denen, die "in
249 						 * Richtung dem liegen", auf dem der User registriert
250 						 * ist. Von denen haben wir das QUIT ja wohl bekommen. */
251 						if( FwdMsg ) IRC_WriteStrServersPrefix( Client_NextHop( c ), c, "QUIT :%s", FwdMsg );
252 						else IRC_WriteStrServersPrefix( Client_NextHop( c ), c, "QUIT :" );
253 					}
254 				}
255 				Channel_Quit( c, FwdMsg ? FwdMsg : c->id );
256 			}
257 			else if( c->type == CLIENT_SERVER )
258 			{
259 				if( c != This_Server )
260 				{
261 					if( c->conn_id != NONE ) Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
262 					else Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered: %s", c->id, txt );
263 				}
264 
265 				/* andere Server informieren */
266 				if( ! NGIRCd_SignalQuit )
267 				{
268 					if( FwdMsg ) IRC_WriteStrServersPrefix( Client_NextHop( c ), c, "SQUIT %s :%s", c->id, FwdMsg );
269 					else IRC_WriteStrServersPrefix( Client_NextHop( c ), c, "SQUIT %s :", c->id );
270 				}
271 			}
272 			else
273 			{
274 				if( c->conn_id != NONE )
275 				{
276 					if( c->id[0] ) Log( LOG_NOTICE, "Client \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
277 					else Log( LOG_NOTICE, "Client unregistered (connection %d): %s", c->conn_id, txt );
278 				}
279 				else
280 				{
281 					if( c->id[0] ) Log( LOG_WARNING, "Unregistered unknown client \"%s\": %s", c->id, txt );
282 					else Log( LOG_WARNING, "Unregistered unknown client: %s", c->id, txt );
283 				}
284 			}
285 
286 			free( c );
287 			break;
288 		}
289 		last = c;
290 		c = (CLIENT *)c->next;
291 	}
292 } /* Client_Destroy */
293 
294 
295 GLOBAL VOID
296 Client_SetHostname( CLIENT *Client, CHAR *Hostname )
297 {
298 	/* Hostname eines Clients setzen */
299 	
300 	assert( Client != NULL );
301 	assert( Hostname != NULL );
302 	
303 	strlcpy( Client->host, Hostname, sizeof( Client->host ));
304 } /* Client_SetHostname */
305 
306 
307 GLOBAL VOID
308 Client_SetID( CLIENT *Client, CHAR *ID )
309 {
310 	/* Hostname eines Clients setzen, Hash-Wert berechnen */
311 
312 	assert( Client != NULL );
313 	assert( ID != NULL );
314 	
315 	strlcpy( Client->id, ID, sizeof( Client->id ));
316 
317 	/* Hash */
318 	Client->hash = Hash( Client->id );
319 } /* Client_SetID */
320 
321 
322 GLOBAL VOID
323 Client_SetUser( CLIENT *Client, CHAR *User, BOOLEAN Idented )
324 {
325 	/* Username eines Clients setzen */
326 
327 	assert( Client != NULL );
328 	assert( User != NULL );
329 	
330 	if( Idented ) strlcpy( Client->user, User, sizeof( Client->user ));
331 	else
332 	{
333 		Client->user[0] = '~';
334 		strlcpy( Client->user + 1, User, sizeof( Client->user ) - 1 );
335 	}
336 } /* Client_SetUser */
337 
338 
339 GLOBAL VOID
340 Client_SetInfo( CLIENT *Client, CHAR *Info )
341 {
342 	/* Hostname eines Clients setzen */
343 
344 	assert( Client != NULL );
345 	assert( Info != NULL );
346 	
347 	strlcpy( Client->info, Info, sizeof( Client->info ));
348 } /* Client_SetInfo */
349 
350 
351 GLOBAL VOID
352 Client_SetModes( CLIENT *Client, CHAR *Modes )
353 {
354 	/* Modes eines Clients setzen */
355 
356 	assert( Client != NULL );
357 	assert( Modes != NULL );
358 
359 	strlcpy( Client->modes, Modes, sizeof( Client->modes ));
360 } /* Client_SetModes */
361 
362 
363 GLOBAL VOID
364 Client_SetFlags( CLIENT *Client, CHAR *Flags )
365 {
366 	/* Flags eines Clients setzen */
367 
368 	assert( Client != NULL );
369 	assert( Flags != NULL );
370 
371 	strlcpy( Client->flags, Flags, sizeof( Client->flags ));
372 } /* Client_SetFlags */
373 
374 
375 GLOBAL VOID
376 Client_SetPassword( CLIENT *Client, CHAR *Pwd )
377 {
378 	/* Von einem Client geliefertes Passwort */
379 
380 	assert( Client != NULL );
381 	assert( Pwd != NULL );
382 	
383 	strlcpy( Client->pwd, Pwd, sizeof( Client->pwd ));
384 } /* Client_SetPassword */
385 
386 
387 GLOBAL VOID
388 Client_SetAway( CLIENT *Client, CHAR *Txt )
389 {
390 	/* Set AWAY reason of client */
391 
392 	assert( Client != NULL );
393 	assert( Txt != NULL );
394 
395 	strlcpy( Client->away, Txt, sizeof( Client->away ));
396 	Log( LOG_DEBUG, "User \"%s\" is away: %s", Client_Mask( Client ), Txt );
397 } /* Client_SetAway */
398 
399 
400 GLOBAL VOID
401 Client_SetType( CLIENT *Client, INT Type )
402 {
403 	assert( Client != NULL );
404 	Client->type = Type;
405 	if( Type == CLIENT_SERVER ) Generate_MyToken( Client );
406 	Adjust_Counters( Client );
407 } /* Client_SetType */
408 
409 
410 GLOBAL VOID
411 Client_SetHops( CLIENT *Client, INT Hops )
412 {
413 	assert( Client != NULL );
414 	Client->hops = Hops;
415 } /* Client_SetHops */
416 
417 
418 GLOBAL VOID
419 Client_SetToken( CLIENT *Client, INT Token )
420 {
421 	assert( Client != NULL );
422 	Client->token = Token;
423 } /* Client_SetToken */
424 
425 
426 GLOBAL VOID
427 Client_SetIntroducer( CLIENT *Client, CLIENT *Introducer )
428 {
429 	assert( Client != NULL );
430 	assert( Introducer != NULL );
431 	Client->introducer = Introducer;
432 } /* Client_SetIntroducer */
433 
434 
435 GLOBAL VOID
436 Client_SetOperByMe( CLIENT *Client, BOOLEAN OperByMe )
437 {
438 	assert( Client != NULL );
439 	Client->oper_by_me = OperByMe;
440 } /* Client_SetOperByMe */
441 
442 
443 GLOBAL BOOLEAN
444 Client_ModeAdd( CLIENT *Client, CHAR Mode )
445 {
446 	/* Mode soll gesetzt werden. TRUE wird geliefert, wenn der
447 	 * Mode neu gesetzt wurde, FALSE, wenn der Client den Mode
448 	 * bereits hatte. */
449 
450 	CHAR x[2];
451 	
452 	assert( Client != NULL );
453 
454 	x[0] = Mode; x[1] = '\0';
455 	if( ! strchr( Client->modes, x[0] ))
456 	{
457 		/* Client hat den Mode noch nicht -> setzen */
458 		strlcat( Client->modes, x, sizeof( Client->modes ));
459 		return TRUE;
460 	}
461 	else return FALSE;
462 } /* Client_ModeAdd */
463 
464 
465 GLOBAL BOOLEAN
466 Client_ModeDel( CLIENT *Client, CHAR Mode )
467 {
468 	/* Mode soll geloescht werden. TRUE wird geliefert, wenn der
469 	* Mode entfernt wurde, FALSE, wenn der Client den Mode
470 	* ueberhaupt nicht hatte. */
471 
472 	CHAR x[2], *p;
473 
474 	assert( Client != NULL );
475 
476 	x[0] = Mode; x[1] = '\0';
477 
478 	p = strchr( Client->modes, x[0] );
479 	if( ! p ) return FALSE;
480 
481 	/* Client hat den Mode -> loeschen */
482 	while( *p )
483 	{
484 		*p = *(p + 1);
485 		p++;
486 	}
487 	return TRUE;
488 } /* Client_ModeDel */
489 
490 
491 GLOBAL CLIENT *
492 Client_GetFromConn( CONN_ID Idx )
493 {
494 	/* Client-Struktur, die zur lokalen Verbindung Idx gehoert,
495 	 * liefern. Wird keine gefunden, so wird NULL geliefert. */
496 
497 	CLIENT *c;
498 
499 	assert( Idx >= 0 );
500 	
501 	c = My_Clients;
502 	while( c )
503 	{
504 		if( c->conn_id == Idx ) return c;
505 		c = (CLIENT *)c->next;
506 	}
507 	return NULL;
508 } /* Client_GetFromConn */
509 
510 
511 GLOBAL CLIENT *
512 Client_Search( CHAR *Nick )
513 {
514 	/* Client-Struktur, die den entsprechenden Nick hat, liefern.
515 	 * Wird keine gefunden, so wird NULL geliefert. */
516 
517 	CHAR search_id[CLIENT_ID_LEN], *ptr;
518 	CLIENT *c = NULL;
519 	UINT32 search_hash;
520 
521 	assert( Nick != NULL );
522 
523 	/* Nick kopieren und ggf. Host-Mask abschneiden */
524 	strlcpy( search_id, Nick, sizeof( search_id ));
525 	ptr = strchr( search_id, '!' );
526 	if( ptr ) *ptr = '\0';
527 
528 	search_hash = Hash( search_id );
529 
530 	c = My_Clients;
531 	while( c )
532 	{
533 		if( c->hash == search_hash )
534 		{
535 			/* lt. Hash-Wert: Treffer! */
536 			if( strcasecmp( c->id, search_id ) == 0 ) return c;
537 		}
538 		c = (CLIENT *)c->next;
539 	}
540 	return NULL;
541 } /* Client_Search */
542 
543 
544 GLOBAL CLIENT *
545 Client_GetFromToken( CLIENT *Client, INT Token )
546 {
547 	/* Client-Struktur, die den entsprechenden Introducer (=Client)
548 	 * und das gegebene Token hat, liefern. Wird keine gefunden,
549 	 * so wird NULL geliefert. */
550 
551 	CLIENT *c;
552 
553 	assert( Client != NULL );
554 	assert( Token > 0 );
555 
556 	c = My_Clients;
557 	while( c )
558 	{
559 		if(( c->type == CLIENT_SERVER ) && ( c->introducer == Client ) && ( c->token == Token )) return c;
560 		c = (CLIENT *)c->next;
561 	}
562 	return NULL;
563 } /* Client_GetFromToken */
564 
565 
566 GLOBAL INT
567 Client_Type( CLIENT *Client )
568 {
569 	assert( Client != NULL );
570 	return Client->type;
571 } /* Client_Type */
572 
573 
574 GLOBAL CONN_ID
575 Client_Conn( CLIENT *Client )
576 {
577 	assert( Client != NULL );
578 	return Client->conn_id;
579 } /* Client_Conn */
580 
581 
582 GLOBAL CHAR *
583 Client_ID( CLIENT *Client )
584 {
585 	assert( Client != NULL );
586 
587 #ifdef DEBUG
588 	if( Client->type == CLIENT_USER ) assert( strlen( Client->id ) < CLIENT_NICK_LEN );
589 #endif
590 						   
591 	if( Client->id[0] ) return Client->id;
592 	else return "*";
593 } /* Client_ID */
594 
595 
596 GLOBAL CHAR *
597 Client_Info( CLIENT *Client )
598 {
599 	assert( Client != NULL );
600 	return Client->info;
601 } /* Client_Info */
602 
603 
604 GLOBAL CHAR *
605 Client_User( CLIENT *Client )
606 {
607 	assert( Client != NULL );
608 	if( Client->user[0] ) return Client->user;
609 	else return "~";
610 } /* Client_User */
611 
612 
613 GLOBAL CHAR *
614 Client_Hostname( CLIENT *Client )
615 {
616 	assert( Client != NULL );
617 	return Client->host;
618 } /* Client_Hostname */
619 
620 
621 GLOBAL CHAR *
622 Client_Password( CLIENT *Client )
623 {
624 	assert( Client != NULL );
625 	return Client->pwd;
626 } /* Client_Password */
627 
628 
629 GLOBAL CHAR *
630 Client_Modes( CLIENT *Client )
631 {
632 	assert( Client != NULL );
633 	return Client->modes;
634 } /* Client_Modes */
635 
636 
637 GLOBAL CHAR *
638 Client_Flags( CLIENT *Client )
639 {
640 	assert( Client != NULL );
641 	return Client->flags;
642 } /* Client_Flags */
643 
644 
645 GLOBAL BOOLEAN
646 Client_OperByMe( CLIENT *Client )
647 {
648 	assert( Client != NULL );
649 	return Client->oper_by_me;
650 } /* Client_OperByMe */
651 
652 
653 GLOBAL INT
654 Client_Hops( CLIENT *Client )
655 {
656 	assert( Client != NULL );
657 	return Client->hops;
658 } /* Client_Hops */
659 
660 
661 GLOBAL INT
662 Client_Token( CLIENT *Client )
663 {
664 	assert( Client != NULL );
665 	return Client->token;
666 } /* Client_Token */
667 
668 
669 GLOBAL INT
670 Client_MyToken( CLIENT *Client )
671 {
672 	assert( Client != NULL );
673 	return Client->mytoken;
674 } /* Client_MyToken */
675 
676 
677 GLOBAL CLIENT *
678 Client_NextHop( CLIENT *Client )
679 {
680 	CLIENT *c;
681 	
682 	assert( Client != NULL );
683 
684 	c = Client;
685 	while( c->introducer && ( c->introducer != c ) && ( c->introducer != This_Server )) c = c->introducer;
686 	return c;
687 } /* Client_NextHop */
688 
689 
690 GLOBAL CHAR *
691 Client_Mask( CLIENT *Client )
692 {
693 	/* Client-"ID" liefern, wie sie z.B. fuer
694 	 * Prefixe benoetigt wird. */
695 
696 	assert( Client != NULL );
697 	
698 	if( Client->type == CLIENT_SERVER ) return Client->id;
699 
700 	snprintf( GetID_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user, Client->host );
701 	return GetID_Buffer;
702 } /* Client_Mask */
703 
704 
705 GLOBAL CLIENT *
706 Client_Introducer( CLIENT *Client )
707 {
708 	assert( Client != NULL );
709 	return Client->introducer;
710 } /* Client_Introducer */
711 
712 
713 GLOBAL CLIENT *
714 Client_TopServer( CLIENT *Client )
715 {
716 	assert( Client != NULL );
717 	return Client->topserver;
718 } /* Client_TopServer */
719 
720 
721 GLOBAL BOOLEAN
722 Client_HasMode( CLIENT *Client, CHAR Mode )
723 {
724 	assert( Client != NULL );
725 	return strchr( Client->modes, Mode ) != NULL;
726 } /* Client_HasMode */
727 
728 
729 GLOBAL CHAR *
730 Client_Away( CLIENT *Client )
731 {
732 	/* AWAY-Text liefern */
733 
734 	assert( Client != NULL );
735 	return Client->away;
736 } /* Client_Away */
737 
738 
739 GLOBAL BOOLEAN
740 Client_CheckNick( CLIENT *Client, CHAR *Nick )
741 {
742 	/* Nick ueberpruefen */
743 
744 	assert( Client != NULL );
745 	assert( Nick != NULL );
746 	
747 	/* Nick ungueltig? */
748 	if( ! Client_IsValidNick( Nick ))
749 	{
750 		IRC_WriteStrClient( Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID( Client ), Nick );
751 		return FALSE;
752 	}
753 
754 	/* Nick bereits vergeben? */
755 	if( Client_Search( Nick ))
756 	{
757 		/* den Nick gibt es bereits */
758 		IRC_WriteStrClient( Client, ERR_NICKNAMEINUSE_MSG, Client_ID( Client ), Nick );
759 		return FALSE;
760 	}
761 
762 	return TRUE;
763 } /* Client_CheckNick */
764 
765 
766 GLOBAL BOOLEAN
767 Client_CheckID( CLIENT *Client, CHAR *ID )
768 {
769 	/* Nick ueberpruefen */
770 
771 	CHAR str[COMMAND_LEN];
772 	CLIENT *c;
773 
774 	assert( Client != NULL );
775 	assert( Client->conn_id > NONE );
776 	assert( ID != NULL );
777 
778 	/* Nick zu lang? */
779 	if( strlen( ID ) > CLIENT_ID_LEN )
780 	{
781 		IRC_WriteStrClient( Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID( Client ), ID );
782 		return FALSE;
783 	}
784 
785 	/* ID bereits vergeben? */
786 	c = My_Clients;
787 	while( c )
788 	{
789 		if( strcasecmp( c->id, ID ) == 0 )
790 		{
791 			/* die Server-ID gibt es bereits */
792 			snprintf( str, sizeof( str ), "ID \"%s\" already registered", ID );
793 			if( Client->conn_id != c->conn_id ) Log( LOG_ERR, "%s (on connection %d)!", str, c->conn_id );
794 			else Log( LOG_ERR, "%s (via network)!", str );
795 			Conn_Close( Client->conn_id, str, str, TRUE );
796 			return FALSE;
797 		}
798 		c = (CLIENT *)c->next;
799 	}
800 
801 	return TRUE;
802 } /* Client_CheckID */
803 
804 
805 GLOBAL CLIENT *
806 Client_First( VOID )
807 {
808 	/* Ersten Client liefern. */
809 
810 	return My_Clients;
811 } /* Client_First */
812 
813 
814 GLOBAL CLIENT *
815 Client_Next( CLIENT *c )
816 {
817 	/* Naechsten Client liefern. Existiert keiner,
818 	 * so wird NULL geliefert. */
819 
820 	assert( c != NULL );
821 	return (CLIENT *)c->next;
822 } /* Client_Next */
823 
824 
825 GLOBAL LONG
826 Client_UserCount( VOID )
827 {
828 	return Count( CLIENT_USER );
829 } /* Client_UserCount */
830 
831 
832 GLOBAL LONG
833 Client_ServiceCount( VOID )
834 {
835 	return Count( CLIENT_SERVICE );;
836 } /* Client_ServiceCount */
837 
838 
839 GLOBAL LONG
840 Client_ServerCount( VOID )
841 {
842 	return Count( CLIENT_SERVER );
843 } /* Client_ServerCount */
844 
845 
846 GLOBAL LONG
847 Client_MyUserCount( VOID )
848 {
849 	return MyCount( CLIENT_USER );
850 } /* Client_MyUserCount */
851 
852 
853 GLOBAL LONG
854 Client_MyServiceCount( VOID )
855 {
856 	return MyCount( CLIENT_SERVICE );
857 } /* Client_MyServiceCount */
858 
859 
860 GLOBAL LONG
861 Client_MyServerCount( VOID )
862 {
863 	CLIENT *c;
864 	LONG cnt;
865 
866 	cnt = 0;
867 	c = My_Clients;
868 	while( c )
869 	{
870 		if(( c->type == CLIENT_SERVER ) && ( c->hops == 1 )) cnt++;
871 		c = (CLIENT *)c->next;
872 	}
873 	return cnt;
874 } /* Client_MyServerCount */
875 
876 
877 GLOBAL LONG
878 Client_OperCount( VOID )
879 {
880 	CLIENT *c;
881 	LONG cnt;
882 
883 	cnt = 0;
884 	c = My_Clients;
885 	while( c )
886 	{
887 		if( c && ( c->type == CLIENT_USER ) && ( strchr( c->modes, 'o' ))) cnt++;
888 		c = (CLIENT *)c->next;
889 	}
890 	return cnt;
891 } /* Client_OperCount */
892 
893 
894 GLOBAL LONG
895 Client_UnknownCount( VOID )
896 {
897 	CLIENT *c;
898 	LONG cnt;
899 
900 	cnt = 0;
901 	c = My_Clients;
902 	while( c )
903 	{
904 		if( c && ( c->type != CLIENT_USER ) && ( c->type != CLIENT_SERVICE ) && ( c->type != CLIENT_SERVER )) cnt++;
905 		c = (CLIENT *)c->next;
906 	}
907 	return cnt;
908 } /* Client_UnknownCount */
909 
910 
911 GLOBAL LONG
912 Client_MaxUserCount( VOID )
913 {
914 	return Max_Users;
915 } /* Client_MaxUserCount */
916 
917 
918 GLOBAL LONG
919 Client_MyMaxUserCount( VOID )
920 {
921 	return My_Max_Users;
922 } /* Client_MyMaxUserCount */
923 
924 
925 GLOBAL BOOLEAN
926 Client_IsValidNick( CHAR *Nick )
927 {
928 	/* Ist der Nick gueltig? */
929 
930 	CHAR *ptr, goodchars[20];
931 	
932 	assert( Nick != NULL );
933 
934 	strcpy( goodchars, ";0123456789-" );
935 
936 	if( Nick[0] == '#' ) return FALSE;
937 	if( strchr( goodchars, Nick[0] )) return FALSE;
938 	if( strlen( Nick ) >= CLIENT_NICK_LEN ) return FALSE;
939 
940 	ptr = Nick;
941 	while( *ptr )
942 	{
943 		if(( *ptr < 'A' ) && ( ! strchr( goodchars, *ptr ))) return FALSE;
944 		if(( *ptr > '}' ) && ( ! strchr( goodchars, *ptr ))) return FALSE;
945 		ptr++;
946 	}
947 	
948 	return TRUE;
949 } /* Client_IsValidNick */
950 
951 
952 LOCAL LONG
953 Count( CLIENT_TYPE Type )
954 {
955 	CLIENT *c;
956 	LONG cnt;
957 
958 	cnt = 0;
959 	c = My_Clients;
960 	while( c )
961 	{
962 		if( c->type == Type ) cnt++;
963 		c = (CLIENT *)c->next;
964 	}
965 	return cnt;
966 } /* Count */
967 
968 
969 LOCAL LONG
970 MyCount( CLIENT_TYPE Type )
971 {
972 	CLIENT *c;
973 	LONG cnt;
974 
975 	cnt = 0;
976 	c = My_Clients;
977 	while( c )
978 	{
979 		if(( c->introducer == This_Server ) && ( c->type == Type )) cnt++;
980 		c = (CLIENT *)c->next;
981 	}
982 	return cnt;
983 } /* MyCount */
984 
985 
986 LOCAL CLIENT *
987 New_Client_Struct( VOID )
988 {
989 	/* Neue CLIENT-Struktur pre-initialisieren */
990 	
991 	CLIENT *c;
992 	
993 	c = malloc( sizeof( CLIENT ));
994 	if( ! c )
995 	{
996 		Log( LOG_EMERG, "Can't allocate memory! [New_Client_Struct]" );
997 		return NULL;
998 	}
999 
1000 	c->next = NULL;
1001 	c->hash = 0;
1002 	c->type = CLIENT_UNKNOWN;
1003 	c->conn_id = NONE;
1004 	c->introducer = NULL;
1005 	c->topserver = NULL;
1006 	strcpy( c->id, "" );
1007 	strcpy( c->pwd, "" );
1008 	strcpy( c->host, "" );
1009 	strcpy( c->user, "" );
1010 	strcpy( c->info, "" );
1011 	strcpy( c->modes, "" );
1012 	c->oper_by_me = FALSE;
1013 	c->hops = -1;
1014 	c->token = -1;
1015 	c->mytoken = -1;
1016 	strcpy( c->away, "" );
1017 	strcpy( c->flags, "" );
1018 
1019 	return c;
1020 } /* New_Client */
1021 
1022 
1023 LOCAL VOID
1024 Generate_MyToken( CLIENT *Client )
1025 {
1026 	CLIENT *c;
1027 	INT token;
1028 
1029 	c = My_Clients;
1030 	token = 2;
1031 	while( c )
1032 	{
1033 		if( c->mytoken == token )
1034 		{
1035 			/* Das Token wurde bereits vergeben */
1036 			token++;
1037 			c = My_Clients;
1038 			continue;
1039 		}
1040 		else c = (CLIENT *)c->next;
1041 	}
1042 	Client->mytoken = token;
1043 	Log( LOG_DEBUG, "Assigned token %d to server \"%s\".", token, Client->id );
1044 } /* Generate_MyToken */
1045 
1046 
1047 LOCAL VOID
1048 Adjust_Counters( CLIENT *Client )
1049 {
1050 	LONG count;
1051 
1052 	assert( Client != NULL );
1053 
1054 	if( Client->type != CLIENT_USER ) return;
1055 	
1056 	if( Client->conn_id != NONE )
1057 	{
1058 		/* Local connection */
1059 		count = Client_MyUserCount( );
1060 		if( count > My_Max_Users ) My_Max_Users = count;
1061 	}
1062 	count = Client_UserCount( );
1063 	if( count > Max_Users ) Max_Users = count;
1064 } /* Adjust_Counters */
1065 
1066 
1067 /* -eof- */