/[svn]/ircd-hybrid-7.2/src/client.c
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Annotation of /ircd-hybrid-7.2/src/client.c

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Revision 503 - (hide annotations)
Fri Mar 3 19:53:47 2006 UTC (15 years, 2 months ago) by michael
File MIME type: text/x-chdr
File size: 42393 byte(s)
- Backported CAP changes from HEAD since it doesn't affect
  any of the ircd's core components and should be supported
  as soon as possible.

1 adx 30 /*
2     * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3     * client.c: Controls clients.
4     *
5     * Copyright (C) 2002 by the past and present ircd coders, and others.
6     *
7     * This program is free software; you can redistribute it and/or modify
8     * it under the terms of the GNU General Public License as published by
9     * the Free Software Foundation; either version 2 of the License, or
10     * (at your option) any later version.
11     *
12     * This program is distributed in the hope that it will be useful,
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15     * GNU General Public License for more details.
16     *
17     * You should have received a copy of the GNU General Public License
18     * along with this program; if not, write to the Free Software
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20     * USA
21     *
22 knight 31 * $Id$
23 adx 30 */
24    
25     #include "stdinc.h"
26     #include "tools.h"
27     #include "client.h"
28     #include "channel_mode.h"
29     #include "common.h"
30     #include "event.h"
31     #include "fdlist.h"
32     #include "hash.h"
33     #include "irc_string.h"
34     #include "sprintf_irc.h"
35     #include "ircd.h"
36     #include "list.h"
37     #include "s_gline.h"
38     #include "numeric.h"
39     #include "packet.h"
40     #include "s_auth.h"
41     #include "s_bsd.h"
42     #include "s_conf.h"
43     #include "s_log.h"
44     #include "s_misc.h"
45     #include "s_serv.h"
46     #include "send.h"
47     #include "whowas.h"
48     #include "s_user.h"
49     #include "dbuf.h"
50     #include "memory.h"
51     #include "hostmask.h"
52     #include "balloc.h"
53     #include "listener.h"
54     #include "irc_res.h"
55     #include "userhost.h"
56    
57     dlink_list listing_client_list = { NULL, NULL, 0 };
58     /* Pointer to beginning of Client list */
59     dlink_list global_client_list = {NULL, NULL, 0};
60     /* unknown/client pointer lists */
61     dlink_list unknown_list = {NULL, NULL, 0};
62     dlink_list local_client_list = {NULL, NULL, 0};
63     dlink_list serv_list = {NULL, NULL, 0};
64     dlink_list global_serv_list = {NULL, NULL, 0};
65     dlink_list oper_list = {NULL, NULL, 0};
66    
67     static EVH check_pings;
68    
69     static BlockHeap *client_heap = NULL;
70     static BlockHeap *lclient_heap = NULL;
71    
72     static dlink_list dead_list = { NULL, NULL, 0};
73     static dlink_list abort_list = { NULL, NULL, 0};
74    
75     static dlink_node *eac_next; /* next aborted client to exit */
76    
77     static void check_pings_list(dlink_list *);
78     static void check_unknowns_list(void);
79     static void ban_them(struct Client *client_p, struct ConfItem *conf);
80    
81    
82     /* init_client()
83     *
84     * inputs - NONE
85     * output - NONE
86     * side effects - initialize client free memory
87     */
88     void
89     init_client(void)
90     {
91     /* start off the check ping event .. -- adrian
92     * Every 30 seconds is plenty -- db
93     */
94     client_heap = BlockHeapCreate("client", sizeof(struct Client), CLIENT_HEAP_SIZE);
95     lclient_heap = BlockHeapCreate("local client", sizeof(struct LocalUser), LCLIENT_HEAP_SIZE);
96     eventAdd("check_pings", check_pings, NULL, 5);
97     }
98    
99     /*
100     * make_client - create a new Client struct and set it to initial state.
101     *
102     * from == NULL, create local client (a client connected
103     * to a socket).
104     * WARNING: This leaves the client in a dangerous
105     * state where fd == -1, dead flag is not set and
106     * the client is on the unknown_list; therefore,
107     * the first thing to do after calling make_client(NULL)
108     * is setting fd to something reasonable. -adx
109     *
110     * from, create remote client (behind a socket
111     * associated with the client defined by
112     * 'from'). ('from' is a local client!!).
113     */
114     struct Client *
115     make_client(struct Client *from)
116     {
117     struct Client *client_p = BlockHeapAlloc(client_heap);
118    
119     if (from == NULL)
120     {
121     client_p->from = client_p; /* 'from' of local client is self! */
122     client_p->since = client_p->lasttime = client_p->firsttime = CurrentTime;
123    
124     client_p->localClient = BlockHeapAlloc(lclient_heap);
125 michael 503 client_p->localClient->registration = REG_INIT;
126 adx 30 /* as good a place as any... */
127     dlinkAdd(client_p, make_dlink_node(), &unknown_list);
128     }
129     else
130     client_p->from = from; /* 'from' of local client is self! */
131    
132     client_p->hnext = client_p;
133     client_p->status = STAT_UNKNOWN;
134     strcpy(client_p->username, "unknown");
135    
136     return client_p;
137     }
138    
139     /*
140     * free_client
141     *
142     * inputs - pointer to client
143     * output - NONE
144     * side effects - client pointed to has its memory freed
145     */
146     static void
147     free_client(struct Client *client_p)
148     {
149     assert(client_p != NULL);
150     assert(client_p != &me);
151     assert(client_p->hnext == client_p);
152     assert(client_p->channel.head == NULL);
153     assert(dlink_list_length(&client_p->channel) == 0);
154    
155     MyFree(client_p->away);
156     MyFree(client_p->serv);
157    
158     if (MyConnect(client_p))
159     {
160 michael 317 assert(client_p->localClient->invited.head == NULL);
161     assert(dlink_list_length(&client_p->localClient->invited) == 0);
162 adx 30 assert(IsClosing(client_p) && IsDead(client_p));
163    
164     MyFree(client_p->localClient->response);
165     MyFree(client_p->localClient->auth_oper);
166    
167     /*
168     * clean up extra sockets from P-lines which have been discarded.
169     */
170     if (client_p->localClient->listener)
171     {
172     assert(0 < client_p->localClient->listener->ref_count);
173     if (0 == --client_p->localClient->listener->ref_count &&
174     !client_p->localClient->listener->active)
175     free_listener(client_p->localClient->listener);
176     }
177    
178     dbuf_clear(&client_p->localClient->buf_recvq);
179     dbuf_clear(&client_p->localClient->buf_sendq);
180    
181     BlockHeapFree(lclient_heap, client_p->localClient);
182     }
183    
184     BlockHeapFree(client_heap, client_p);
185     }
186    
187     /*
188     * check_pings - go through the local client list and check activity
189     * kill off stuff that should die
190     *
191     * inputs - NOT USED (from event)
192     * output - next time_t when check_pings() should be called again
193     * side effects -
194     *
195     *
196     * A PING can be sent to clients as necessary.
197     *
198     * Client/Server ping outs are handled.
199     */
200    
201     /*
202     * Addon from adrian. We used to call this after nextping seconds,
203     * however I've changed it to run once a second. This is only for
204     * PING timeouts, not K/etc-line checks (thanks dianora!). Having it
205     * run once a second makes life a lot easier - when a new client connects
206     * and they need a ping in 4 seconds, if nextping was set to 20 seconds
207     * we end up waiting 20 seconds. This is stupid. :-)
208     * I will optimise (hah!) check_pings() once I've finished working on
209     * tidying up other network IO evilnesses.
210     * -- adrian
211     */
212    
213     static void
214     check_pings(void *notused)
215     {
216     check_pings_list(&local_client_list);
217     check_pings_list(&serv_list);
218     check_unknowns_list();
219     }
220    
221     /* check_pings_list()
222     *
223     * inputs - pointer to list to check
224     * output - NONE
225     * side effects -
226     */
227     static void
228     check_pings_list(dlink_list *list)
229     {
230     char scratch[32]; /* way too generous but... */
231     struct Client *client_p; /* current local client_p being examined */
232     int ping, pingwarn; /* ping time value from client */
233     dlink_node *ptr, *next_ptr;
234    
235     DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
236     {
237     client_p = ptr->data;
238    
239     /*
240     ** Note: No need to notify opers here. It's
241     ** already done when "FLAGS_DEADSOCKET" is set.
242     */
243     if (IsDead(client_p))
244     {
245     /* Ignore it, its been exited already */
246     continue;
247     }
248    
249     if (client_p->localClient->reject_delay > 0)
250     {
251     if (client_p->localClient->reject_delay <= CurrentTime)
252     exit_client(client_p, &me, "Rejected");
253     continue;
254     }
255    
256     if (GlobalSetOptions.idletime && IsClient(client_p))
257     {
258     if (!IsExemptKline(client_p) && !IsOper(client_p) &&
259     !IsIdlelined(client_p) &&
260     ((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime))
261     {
262     struct ConfItem *conf;
263     struct AccessItem *aconf;
264    
265     conf = make_conf_item(KLINE_TYPE);
266     aconf = (struct AccessItem *)map_to_conf(conf);
267    
268     DupString(aconf->host, client_p->host);
269     DupString(aconf->reason, "idle exceeder");
270     DupString(aconf->user, client_p->username);
271     aconf->hold = CurrentTime + 60;
272     add_temp_line(conf);
273    
274     sendto_realops_flags(UMODE_ALL, L_ALL,
275     "Idle time limit exceeded for %s - temp k-lining",
276     get_client_name(client_p, HIDE_IP));
277     exit_client(client_p, &me, aconf->reason);
278     continue;
279     }
280     }
281    
282     if (!IsRegistered(client_p))
283     ping = CONNECTTIMEOUT, pingwarn = 0;
284     else
285     ping = get_client_ping(client_p, &pingwarn);
286    
287     if (ping < CurrentTime - client_p->lasttime)
288     {
289     if (!IsPingSent(client_p))
290     {
291     /*
292     * if we havent PINGed the connection and we havent
293     * heard from it in a while, PING it to make sure
294     * it is still alive.
295     */
296     SetPingSent(client_p);
297     ClearPingWarning(client_p);
298     client_p->lasttime = CurrentTime - ping;
299     sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
300     }
301     else
302     {
303     if (CurrentTime - client_p->lasttime >= 2 * ping)
304     {
305     /*
306     * If the client/server hasn't talked to us in 2*ping seconds
307     * and it has a ping time, then close its connection.
308     */
309     if (IsServer(client_p) || IsHandshake(client_p))
310     {
311     sendto_realops_flags(UMODE_ALL, L_ADMIN,
312     "No response from %s, closing link",
313     get_client_name(client_p, HIDE_IP));
314     sendto_realops_flags(UMODE_ALL, L_OPER,
315     "No response from %s, closing link",
316     get_client_name(client_p, MASK_IP));
317     ilog(L_NOTICE, "No response from %s, closing link",
318     get_client_name(client_p, HIDE_IP));
319     }
320     ircsprintf(scratch, "Ping timeout: %d seconds",
321     (int)(CurrentTime - client_p->lasttime));
322    
323     exit_client(client_p, &me, scratch);
324     }
325     else if (!IsPingWarning(client_p) && pingwarn > 0 &&
326     (IsServer(client_p) || IsHandshake(client_p)) &&
327     CurrentTime - client_p->lasttime >= ping + pingwarn)
328     {
329     /*
330     * If the server hasn't replied in pingwarn seconds after sending
331     * the PING, notify the opers so that they are aware of the problem.
332     */
333     SetPingWarning(client_p);
334     sendto_realops_flags(UMODE_ALL, L_ADMIN,
335     "Warning, no response from %s in %d seconds",
336     get_client_name(client_p, HIDE_IP), pingwarn);
337     sendto_realops_flags(UMODE_ALL, L_OPER,
338     "Warning, no response from %s in %d seconds",
339     get_client_name(client_p, MASK_IP), pingwarn);
340     ilog(L_NOTICE, "No response from %s in %d seconds",
341     get_client_name(client_p, HIDE_IP), pingwarn);
342     }
343     }
344     }
345     }
346     }
347    
348     /* check_unknowns_list()
349     *
350     * inputs - pointer to list of unknown clients
351     * output - NONE
352     * side effects - unknown clients get marked for termination after n seconds
353     */
354     static void
355     check_unknowns_list(void)
356     {
357     dlink_node *ptr, *next_ptr;
358    
359     DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
360     {
361     struct Client *client_p = ptr->data;
362    
363     if (client_p->localClient->reject_delay > 0)
364     {
365     if (client_p->localClient->reject_delay <= CurrentTime)
366     exit_client(client_p, &me, "Rejected");
367     continue;
368     }
369    
370     /* Check UNKNOWN connections - if they have been in this state
371     * for > 30s, close them.
372     */
373     if (client_p->firsttime ? ((CurrentTime - client_p->firsttime) > 30) : 0)
374     exit_client(client_p, &me, "Connection timed out");
375     }
376     }
377    
378     /* check_conf_klines()
379     *
380     * inputs - NONE
381     * output - NONE
382     * side effects - Check all connections for a pending kline against the
383     * client, exit the client if a kline matches.
384     */
385     void
386     check_conf_klines(void)
387     {
388     struct Client *client_p = NULL; /* current local client_p being examined */
389     struct AccessItem *aconf = NULL;
390     struct ConfItem *conf = NULL;
391     dlink_node *ptr, *next_ptr;
392    
393     DLINK_FOREACH_SAFE(ptr, next_ptr, local_client_list.head)
394     {
395     client_p = ptr->data;
396    
397     /* If a client is already being exited
398     */
399     if (IsDead(client_p) || !IsClient(client_p))
400     continue;
401    
402     /* if there is a returned struct ConfItem then kill it */
403     if ((aconf = find_dline_conf(&client_p->localClient->ip,
404     client_p->localClient->aftype)) != NULL)
405     {
406     if (aconf->status & CONF_EXEMPTDLINE)
407     continue;
408    
409     conf = unmap_conf_item(aconf);
410     ban_them(client_p, conf);
411     continue; /* and go examine next fd/client_p */
412     }
413    
414     if (ConfigFileEntry.glines && (aconf = find_gline(client_p)))
415     {
416     if (IsExemptKline(client_p) ||
417     IsExemptGline(client_p))
418     {
419     sendto_realops_flags(UMODE_ALL, L_ALL,
420     "GLINE over-ruled for %s, client is %sline_exempt",
421     get_client_name(client_p, HIDE_IP), IsExemptKline(client_p) ? "k" : "g");
422     continue;
423     }
424    
425     conf = unmap_conf_item(aconf);
426     ban_them(client_p, conf);
427     /* and go examine next fd/client_p */
428     continue;
429     }
430    
431     if ((aconf = find_kill(client_p)) != NULL)
432     {
433    
434     /* if there is a returned struct AccessItem.. then kill it */
435     if (IsExemptKline(client_p))
436     {
437     sendto_realops_flags(UMODE_ALL, L_ALL,
438     "KLINE over-ruled for %s, client is kline_exempt",
439     get_client_name(client_p, HIDE_IP));
440     continue;
441     }
442    
443     conf = unmap_conf_item(aconf);
444     ban_them(client_p, conf);
445     continue;
446     }
447    
448     /* if there is a returned struct MatchItem then kill it */
449     if ((conf = find_matching_name_conf(XLINE_TYPE, client_p->info,
450     NULL, NULL, 0)) != NULL ||
451     (conf = find_matching_name_conf(RXLINE_TYPE, client_p->info,
452     NULL, NULL, 0)) != NULL)
453     {
454     ban_them(client_p, conf);
455     continue;
456     }
457     }
458    
459     /* also check the unknowns list for new dlines */
460     DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
461     {
462     client_p = ptr->data;
463    
464     if ((aconf = find_dline_conf(&client_p->localClient->ip,
465     client_p->localClient->aftype)))
466     {
467     if (aconf->status & CONF_EXEMPTDLINE)
468     continue;
469    
470     exit_client(client_p, &me, "D-lined");
471     }
472     }
473     }
474    
475     /*
476     * ban_them
477     *
478     * inputs - pointer to client to ban
479     * - pointer to ConfItem
480     * output - NONE
481     * side effects - given client_p is banned
482     */
483     static void
484     ban_them(struct Client *client_p, struct ConfItem *conf)
485     {
486     const char *user_reason = NULL; /* What is sent to user */
487     const char *channel_reason = NULL; /* What is sent to channel */
488     struct AccessItem *aconf = NULL;
489     struct MatchItem *xconf = NULL;
490     const char *type_string = NULL;
491     const char dline_string[] = "D-line";
492     const char kline_string[] = "K-line";
493     const char gline_string[] = "G-line";
494     const char xline_string[] = "X-line";
495    
496     switch (conf->type)
497     {
498     case RKLINE_TYPE:
499     case KLINE_TYPE:
500     type_string = kline_string;
501     aconf = map_to_conf(conf);
502     break;
503     case DLINE_TYPE:
504     type_string = dline_string;
505     aconf = map_to_conf(conf);
506     break;
507     case GLINE_TYPE:
508     type_string = gline_string;
509     aconf = map_to_conf(conf);
510     break;
511     case RXLINE_TYPE:
512     case XLINE_TYPE:
513     type_string = xline_string;
514     xconf = map_to_conf(conf);
515     ++xconf->count;
516     break;
517     default:
518     assert(0);
519     break;
520     }
521    
522     if (ConfigFileEntry.kline_with_reason)
523     {
524     if (aconf != NULL)
525     user_reason = aconf->reason ? aconf->reason : type_string;
526     if (xconf != NULL)
527     user_reason = xconf->reason ? xconf->reason : type_string;
528     }
529     else
530     user_reason = type_string;
531    
532     if (ConfigFileEntry.kline_reason != NULL)
533     channel_reason = ConfigFileEntry.kline_reason;
534     else
535     channel_reason = user_reason;
536    
537     sendto_realops_flags(UMODE_ALL, L_ALL, "%s active for %s",
538     type_string, get_client_name(client_p, HIDE_IP));
539    
540     if (IsClient(client_p))
541     sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
542     me.name, client_p->name, user_reason);
543    
544     exit_client(client_p, &me, channel_reason);
545     }
546    
547     /* update_client_exit_stats()
548     *
549     * input - pointer to client
550     * output - NONE
551     * side effects -
552     */
553     static void
554     update_client_exit_stats(struct Client *client_p)
555     {
556     if (IsServer(client_p))
557     {
558     sendto_realops_flags(UMODE_EXTERNAL, L_ALL,
559     "Server %s split from %s",
560     client_p->name, client_p->servptr->name);
561     }
562     else if (IsClient(client_p))
563     {
564     --Count.total;
565     if (IsOper(client_p))
566     --Count.oper;
567     if (IsInvisible(client_p))
568     --Count.invisi;
569     }
570    
571     if (splitchecking && !splitmode)
572     check_splitmode(NULL);
573     }
574    
575     /* find_person()
576     *
577     * inputs - pointer to name
578     * output - return client pointer
579     * side effects - find person by (nick)name
580     */
581     /* XXX - ugly wrapper */
582     struct Client *
583     find_person(const struct Client *client_p, const char *name)
584     {
585     struct Client *c2ptr;
586    
587     if (IsDigit(*name))
588     {
589     if ((c2ptr = hash_find_id(name)) != NULL)
590     {
591     /* invisible users shall not be found by UID guessing */
592     if (IsInvisible(c2ptr) && !IsServer(client_p))
593     c2ptr = NULL;
594     }
595     }
596     else
597     c2ptr = find_client(name);
598    
599     return ((c2ptr != NULL && IsClient(c2ptr)) ? c2ptr : NULL);
600     }
601    
602     /*
603     * find_chasing - find the client structure for a nick name (user)
604     * using history mechanism if necessary. If the client is not found,
605     * an error message (NO SUCH NICK) is generated. If the client was found
606     * through the history, chasing will be 1 and otherwise 0.
607     */
608     struct Client *
609     find_chasing(struct Client *client_p, struct Client *source_p, const char *user, int *chasing)
610     {
611     struct Client *who = find_person(client_p, user);
612    
613     if (chasing)
614     *chasing = 0;
615    
616     if (who)
617     return(who);
618    
619     if (IsDigit(*user))
620     return(NULL);
621    
622     if ((who = get_history(user,
623     (time_t)ConfigFileEntry.kill_chase_time_limit))
624     == NULL)
625     {
626     sendto_one(source_p, form_str(ERR_NOSUCHNICK),
627     me.name, source_p->name, user);
628     return(NULL);
629     }
630    
631     if (chasing)
632     *chasing = 1;
633    
634     return(who);
635     }
636    
637     /*
638     * get_client_name - Return the name of the client
639     * for various tracking and
640     * admin purposes. The main purpose of this function is to
641     * return the "socket host" name of the client, if that
642     * differs from the advertised name (other than case).
643     * But, this can be used to any client structure.
644     *
645     * NOTE 1:
646     * Watch out the allocation of "nbuf", if either source_p->name
647     * or source_p->sockhost gets changed into pointers instead of
648     * directly allocated within the structure...
649     *
650     * NOTE 2:
651     * Function return either a pointer to the structure (source_p) or
652     * to internal buffer (nbuf). *NEVER* use the returned pointer
653     * to modify what it points!!!
654     */
655     const char *
656     get_client_name(struct Client *client, int showip)
657     {
658     static char nbuf[HOSTLEN * 2 + USERLEN + 5];
659    
660     assert(client != NULL);
661    
662     if (irccmp(client->name, client->host) == 0)
663     return(client->name);
664    
665     if (ConfigServerHide.hide_server_ips)
666     if (IsServer(client) || IsConnecting(client) || IsHandshake(client))
667     showip = MASK_IP;
668    
669     if (ConfigFileEntry.hide_spoof_ips)
670     if (showip == SHOW_IP && IsIPSpoof(client))
671     showip = MASK_IP;
672    
673     /* And finally, let's get the host information, ip or name */
674     switch (showip)
675     {
676     case SHOW_IP:
677     if (MyConnect(client))
678     {
679     ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username,
680     client->sockhost);
681     break;
682     }
683     case MASK_IP:
684     ircsprintf(nbuf, "%s[%s@255.255.255.255]", client->name,
685     client->username);
686     break;
687     default:
688     ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username,
689     client->host);
690     }
691    
692     return(nbuf);
693     }
694    
695     void
696     free_exited_clients(void)
697     {
698     dlink_node *ptr, *next;
699     struct Client *target_p;
700    
701     DLINK_FOREACH_SAFE(ptr, next, dead_list.head)
702     {
703     target_p = ptr->data;
704    
705     if (ptr->data == NULL)
706     {
707     sendto_realops_flags(UMODE_ALL, L_ALL,
708     "Warning: null client on dead_list!");
709     dlinkDelete(ptr, &dead_list);
710     free_dlink_node(ptr);
711     continue;
712     }
713    
714     free_client(target_p);
715     dlinkDelete(ptr, &dead_list);
716     free_dlink_node(ptr);
717     }
718     }
719    
720     /*
721     * Exit one client, local or remote. Assuming all dependents have
722     * been already removed, and socket closed for local client.
723     *
724     * The only messages generated are QUITs on channels.
725     */
726     static void
727     exit_one_client(struct Client *source_p, const char *quitmsg)
728     {
729     dlink_node *lp = NULL, *next_lp = NULL;
730    
731     assert(!IsMe(source_p));
732    
733     if (IsServer(source_p))
734     {
735     dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers);
736    
737     if ((lp = dlinkFindDelete(&global_serv_list, source_p)) != NULL)
738     free_dlink_node(lp);
739    
740     if (!MyConnect(source_p))
741     {
742     source_p->from->serv->dep_servers--;
743     assert(source_p->from->serv->dep_servers > 0);
744     }
745     }
746     else if (IsClient(source_p))
747     {
748     if (source_p->servptr->serv != NULL)
749     dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users);
750    
751     /* If a person is on a channel, send a QUIT notice
752     ** to every client (person) on the same channel (so
753     ** that the client can show the "**signoff" message).
754     ** (Note: The notice is to the local clients *only*)
755     */
756     sendto_common_channels_local(source_p, 0, ":%s!%s@%s QUIT :%s",
757     source_p->name, source_p->username,
758     source_p->host, quitmsg);
759     DLINK_FOREACH_SAFE(lp, next_lp, source_p->channel.head)
760     remove_user_from_channel(lp->data);
761    
762     /* Clean up allow lists */
763     del_all_accepts(source_p);
764     add_history(source_p, 0);
765     off_history(source_p);
766    
767     if (!MyConnect(source_p))
768     {
769     source_p->from->serv->dep_users--;
770     assert(source_p->from->serv->dep_users >= 0);
771     }
772 michael 317 else
773     {
774     /* Clean up invitefield */
775     DLINK_FOREACH_SAFE(lp, next_lp, source_p->localClient->invited.head)
776     del_invite(lp->data, source_p);
777     }
778 adx 30 }
779    
780     /* Remove source_p from the client lists */
781     if (HasID(source_p))
782     hash_del_id(source_p);
783     if (source_p->name[0])
784     hash_del_client(source_p);
785    
786     if (IsUserHostIp(source_p))
787     delete_user_host(source_p->username, source_p->host, !MyConnect(source_p));
788    
789     /* remove from global client list
790     * NOTE: source_p->node.next cannot be NULL if the client is added
791     * to global_client_list (there is always &me at its end)
792     */
793     if (source_p != NULL && source_p->node.next != NULL)
794     dlinkDelete(&source_p->node, &global_client_list);
795    
796     update_client_exit_stats(source_p);
797    
798     /* Check to see if the client isn't already on the dead list */
799     assert(dlinkFind(&dead_list, source_p) == NULL);
800    
801     /* add to dead client dlist */
802     SetDead(source_p);
803     dlinkAdd(source_p, make_dlink_node(), &dead_list);
804     }
805    
806     /* Recursively send QUITs and SQUITs for source_p and all its dependent clients
807     * and servers to those servers that need them. A server needs the client
808     * QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it
809     * isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once
810     * a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending
811     * on that one -orabidoo
812     *
813     * This is now called on each local server -adx
814     */
815     static void
816     recurse_send_quits(struct Client *original_source_p, struct Client *source_p,
817     struct Client *from, struct Client *to, const char *comment,
818     const char *splitstr, const char *myname)
819     {
820     dlink_node *ptr, *next;
821     struct Client *target_p;
822     int hidden = match(myname, source_p->name);
823    
824     assert(to != source_p); /* should be already removed from serv_list */
825    
826     /* If this server can handle quit storm (QS) removal
827     * of dependents, just send the SQUIT
828     *
829     * Always check *all* dependent servers if some of them are
830     * hidden behind fakename. If so, send out the QUITs -adx
831     */
832     if (hidden || !IsCapable(to, CAP_QS))
833     DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head)
834     {
835     target_p = ptr->data;
836     sendto_one(to, ":%s QUIT :%s", target_p->name, splitstr);
837     }
838    
839     DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head)
840     recurse_send_quits(original_source_p, ptr->data, from, to,
841     comment, splitstr, myname);
842    
843     if (!hidden && ((source_p == original_source_p && to != from) ||
844     !IsCapable(to, CAP_QS)))
845     {
846     /* don't use a prefix here - we have to be 100% sure the message
847     * will be accepted without Unknown prefix etc.. */
848     sendto_one(to, "SQUIT %s :%s", ID_or_name(source_p, to), comment);
849     }
850     }
851    
852     /*
853     * Remove all clients that depend on source_p; assumes all (S)QUITs have
854     * already been sent. we make sure to exit a server's dependent clients
855     * and servers before the server itself; exit_one_client takes care of
856     * actually removing things off llists. tweaked from +CSr31 -orabidoo
857     */
858     static void
859     recurse_remove_clients(struct Client *source_p, const char *quitmsg)
860     {
861     dlink_node *ptr, *next;
862    
863     DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head)
864     exit_one_client(ptr->data, quitmsg);
865    
866     DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head)
867     {
868     recurse_remove_clients(ptr->data, quitmsg);
869     exit_one_client(ptr->data, quitmsg);
870     }
871    
872     assert(source_p->serv->dep_servers == 1);
873     assert(source_p->serv->dep_users == 0);
874     }
875    
876     /*
877     ** Remove *everything* that depends on source_p, from all lists, and sending
878     ** all necessary QUITs and SQUITs. source_p itself is still on the lists,
879     ** and its SQUITs have been sent except for the upstream one -orabidoo
880     */
881     static void
882     remove_dependents(struct Client *source_p, struct Client *from,
883     const char *comment, const char *splitstr)
884     {
885     struct Client *to;
886     struct ConfItem *conf;
887     static char myname[HOSTLEN+1];
888     dlink_node *ptr;
889    
890     DLINK_FOREACH(ptr, serv_list.head)
891     {
892     to = ptr->data;
893    
894     if ((conf = to->serv->sconf) != NULL)
895     strlcpy(myname, my_name_for_link(conf), sizeof(myname));
896     else
897     strlcpy(myname, me.name, sizeof(myname));
898     recurse_send_quits(source_p, source_p, from, to,
899     comment, splitstr, myname);
900     }
901    
902     recurse_remove_clients(source_p, splitstr);
903     }
904    
905     /*
906     * exit_client - exit a client of any type. Generally, you can use
907     * this on any struct Client, regardless of its state.
908     *
909     * Note, you shouldn't exit remote _users_ without first doing
910     * SetKilled and propagating a kill or similar message. However,
911     * it is perfectly correct to call exit_client to force a _server_
912     * quit (either local or remote one).
913     *
914     * inputs: - a client pointer that is going to be exited
915     * - for servers, the second argument is a pointer to who
916     * is firing the server. This side won't get any generated
917     * messages. NEVER NULL!
918     * output: none
919     * side effects: the client is delinked from all lists, disconnected,
920     * and the rest of IRC network is notified of the exit.
921     * Client memory is scheduled to be freed
922     */
923     void
924     exit_client(struct Client *source_p, struct Client *from, const char *comment)
925     {
926     dlink_node *m;
927    
928     if (MyConnect(source_p))
929     {
930     /* DO NOT REMOVE. exit_client can be called twice after a failed
931     * read/write.
932     */
933     if (IsClosing(source_p))
934     return;
935    
936     SetClosing(source_p);
937    
938     if (IsIpHash(source_p))
939     remove_one_ip(&source_p->localClient->ip);
940    
941     delete_auth(source_p);
942    
943     /* This source_p could have status of one of STAT_UNKNOWN, STAT_CONNECTING
944     * STAT_HANDSHAKE or STAT_UNKNOWN
945     * all of which are lumped together into unknown_list
946     *
947     * In all above cases IsRegistered() will not be true.
948     */
949     if (!IsRegistered(source_p))
950     {
951     if ((m = dlinkFindDelete(&unknown_list, source_p)) != NULL)
952     free_dlink_node(m);
953     }
954     else if (IsClient(source_p))
955     {
956     Count.local--;
957    
958     if (IsOper(source_p))
959     {
960     if ((m = dlinkFindDelete(&oper_list, source_p)) != NULL)
961     free_dlink_node(m);
962     }
963    
964     dlinkDelete(&source_p->localClient->lclient_node, &local_client_list);
965     if (source_p->localClient->list_task != NULL)
966     free_list_task(source_p->localClient->list_task, source_p);
967    
968     sendto_realops_flags(UMODE_CCONN, L_ALL, "Client exiting: %s (%s@%s) [%s] [%s]",
969     source_p->name, source_p->username, source_p->host, comment,
970     ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
971     "255.255.255.255" : source_p->sockhost);
972     }
973    
974     /* As soon as a client is known to be a server of some sort
975     * it has to be put on the serv_list, or SJOIN's to this new server
976     * from the connect burst will not be seen.
977     */
978     if (IsServer(source_p) || IsConnecting(source_p) ||
979     IsHandshake(source_p))
980     {
981     if ((m = dlinkFindDelete(&serv_list, source_p)) != NULL)
982     {
983     free_dlink_node(m);
984     unset_chcap_usage_counts(source_p);
985     }
986    
987     if (IsServer(source_p))
988     {
989     Count.myserver--;
990     if (ServerInfo.hub)
991     remove_lazylink_flags(source_p->localClient->serverMask);
992     else
993     uplink = NULL;
994     }
995     }
996    
997     log_user_exit(source_p);
998    
999     if (!IsDead(source_p))
1000     {
1001     if (IsServer(source_p))
1002     {
1003     /* for them, we are exiting the network */
1004     sendto_one(source_p, ":%s SQUIT %s :%s",
1005     ID_or_name(from, source_p), me.name, comment);
1006     }
1007    
1008     sendto_one(source_p, "ERROR :Closing Link: %s (%s)",
1009     source_p->host, comment);
1010     }
1011    
1012     /*
1013     ** Currently only server connections can have
1014     ** depending remote clients here, but it does no
1015     ** harm to check for all local clients. In
1016     ** future some other clients than servers might
1017     ** have remotes too...
1018     **
1019     ** Close the Client connection first and mark it
1020     ** so that no messages are attempted to send to it.
1021     ** Remember it makes source_p->from == NULL.
1022     */
1023     close_connection(source_p);
1024     }
1025    
1026     if (IsServer(source_p))
1027     {
1028     char splitstr[HOSTLEN + HOSTLEN + 2];
1029    
1030     /* This shouldn't ever happen */
1031     assert(source_p->serv != NULL && source_p->servptr != NULL);
1032    
1033     if (ConfigServerHide.hide_servers)
1034     /* set netsplit message to "*.net *.split" to still show
1035     * that its a split, but hide the servers splitting
1036     */
1037     strcpy(splitstr, "*.net *.split");
1038     else
1039     snprintf(splitstr, sizeof(splitstr), "%s %s",
1040     source_p->servptr->name, source_p->name);
1041    
1042     remove_dependents(source_p, from->from, comment, splitstr);
1043    
1044     if (source_p->servptr == &me)
1045     {
1046     sendto_realops_flags(UMODE_ALL, L_ALL,
1047     "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
1048     source_p->name, (int)(CurrentTime - source_p->firsttime),
1049     source_p->localClient->send.bytes >> 10,
1050     source_p->localClient->recv.bytes >> 10);
1051     ilog(L_NOTICE, "%s was connected for %d seconds. %llu/%llu sendK/recvK.",
1052     source_p->name, (int)(CurrentTime - source_p->firsttime),
1053     source_p->localClient->send.bytes >> 10,
1054     source_p->localClient->recv.bytes >> 10);
1055     }
1056     }
1057     else if (IsClient(source_p) && !IsKilled(source_p))
1058     {
1059 michael 498 sendto_server(from->from, source_p, NULL, CAP_TS6, NOCAPS, NOFLAGS,
1060 adx 30 ":%s QUIT :%s", ID(source_p), comment);
1061 michael 498 sendto_server(from->from, source_p, NULL, NOCAPS, CAP_TS6, NOFLAGS,
1062 adx 30 ":%s QUIT :%s", source_p->name, comment);
1063     }
1064    
1065     /* The client *better* be off all of the lists */
1066     assert(dlinkFind(&unknown_list, source_p) == NULL);
1067     assert(dlinkFind(&local_client_list, source_p) == NULL);
1068     assert(dlinkFind(&serv_list, source_p) == NULL);
1069     assert(dlinkFind(&oper_list, source_p) == NULL);
1070    
1071     exit_one_client(source_p, comment);
1072     }
1073    
1074     /*
1075     * dead_link_on_write - report a write error if not already dead,
1076     * mark it as dead then exit it
1077     */
1078     void
1079     dead_link_on_write(struct Client *client_p, int ierrno)
1080     {
1081     dlink_node *ptr;
1082    
1083     if (IsDefunct(client_p))
1084     return;
1085    
1086     dbuf_clear(&client_p->localClient->buf_recvq);
1087     dbuf_clear(&client_p->localClient->buf_sendq);
1088    
1089     assert(dlinkFind(&abort_list, client_p) == NULL);
1090     ptr = make_dlink_node();
1091     /* don't let exit_aborted_clients() finish yet */
1092     dlinkAddTail(client_p, ptr, &abort_list);
1093    
1094     if (eac_next == NULL)
1095     eac_next = ptr;
1096    
1097     SetDead(client_p); /* You are dead my friend */
1098     }
1099    
1100     /*
1101     * dead_link_on_read - report a read error if not already dead,
1102     * mark it as dead then exit it
1103     */
1104     void
1105     dead_link_on_read(struct Client *client_p, int error)
1106     {
1107     char errmsg[255];
1108     int current_error;
1109    
1110     if (IsDefunct(client_p))
1111     return;
1112    
1113     dbuf_clear(&client_p->localClient->buf_recvq);
1114     dbuf_clear(&client_p->localClient->buf_sendq);
1115    
1116     current_error = get_sockerr(client_p->localClient->fd.fd);
1117    
1118     if (IsServer(client_p) || IsHandshake(client_p))
1119     {
1120     int connected = CurrentTime - client_p->firsttime;
1121    
1122     if (error == 0)
1123     {
1124     /* Admins get the real IP */
1125     sendto_realops_flags(UMODE_ALL, L_ADMIN,
1126     "Server %s closed the connection",
1127     get_client_name(client_p, SHOW_IP));
1128    
1129     /* Opers get a masked IP */
1130     sendto_realops_flags(UMODE_ALL, L_OPER,
1131     "Server %s closed the connection",
1132     get_client_name(client_p, MASK_IP));
1133    
1134     ilog(L_NOTICE, "Server %s closed the connection",
1135     get_client_name(client_p, SHOW_IP));
1136     }
1137     else
1138     {
1139     report_error(L_ADMIN, "Lost connection to %s: %d",
1140     get_client_name(client_p, SHOW_IP), current_error);
1141     report_error(L_OPER, "Lost connection to %s: %d",
1142     get_client_name(client_p, MASK_IP), current_error);
1143     }
1144    
1145     sendto_realops_flags(UMODE_ALL, L_ALL,
1146     "%s had been connected for %d day%s, %2d:%02d:%02d",
1147     client_p->name, connected/86400,
1148     (connected/86400 == 1) ? "" : "s",
1149     (connected % 86400) / 3600, (connected % 3600) / 60,
1150     connected % 60);
1151     }
1152    
1153     if (error == 0)
1154     strlcpy(errmsg, "Remote host closed the connection",
1155     sizeof(errmsg));
1156     else
1157     ircsprintf(errmsg, "Read error: %s",
1158     strerror(current_error));
1159    
1160     exit_client(client_p, &me, errmsg);
1161     }
1162    
1163     void
1164     exit_aborted_clients(void)
1165     {
1166     dlink_node *ptr;
1167     struct Client *target_p;
1168     const char *notice;
1169    
1170     DLINK_FOREACH_SAFE(ptr, eac_next, abort_list.head)
1171     {
1172     target_p = ptr->data;
1173     eac_next = ptr->next;
1174    
1175     if (target_p == NULL)
1176     {
1177     sendto_realops_flags(UMODE_ALL, L_ALL,
1178     "Warning: null client on abort_list!");
1179     dlinkDelete(ptr, &abort_list);
1180     free_dlink_node(ptr);
1181     continue;
1182     }
1183    
1184     dlinkDelete(ptr, &abort_list);
1185    
1186     if (IsSendQExceeded(target_p))
1187     notice = "Max SendQ exceeded";
1188     else
1189     notice = "Write error: connection closed";
1190    
1191     exit_client(target_p, &me, notice);
1192     free_dlink_node(ptr);
1193     }
1194     }
1195    
1196     /*
1197     * accept processing, this adds a form of "caller ID" to ircd
1198     *
1199     * If a client puts themselves into "caller ID only" mode,
1200     * only clients that match a client pointer they have put on
1201     * the accept list will be allowed to message them.
1202     *
1203     * [ source.on_allow_list ] -> [ target1 ] -> [ target2 ]
1204     *
1205     * [target.allow_list] -> [ source1 ] -> [source2 ]
1206     *
1207     * i.e. a target will have a link list of source pointers it will allow
1208     * each source client then has a back pointer pointing back
1209     * to the client that has it on its accept list.
1210     * This allows for exit_one_client to remove these now bogus entries
1211     * from any client having an accept on them.
1212     */
1213    
1214     /* accept_message()
1215     *
1216     * inputs - pointer to source client
1217     * - pointer to target client
1218     * output - 1 if accept this message 0 if not
1219     * side effects - See if source is on target's allow list
1220     */
1221     int
1222     accept_message(struct Client *source, struct Client *target)
1223     {
1224     dlink_node *ptr;
1225    
1226     DLINK_FOREACH(ptr, target->allow_list.head)
1227     {
1228     struct Client *target_p = ptr->data;
1229    
1230     if (source == target_p)
1231     return (1);
1232     }
1233    
1234     if (IsSoftCallerId(target))
1235     {
1236     DLINK_FOREACH(ptr, target->channel.head)
1237 michael 384 if (IsMember(source, ((struct Membership *)ptr->data)->chptr))
1238 adx 30 return (1);
1239     }
1240    
1241     return (0);
1242     }
1243    
1244     /* del_from_accept()
1245     *
1246     * inputs - pointer to source client
1247     * - pointer to target client
1248     * output - NONE
1249     * side effects - Delete's source pointer to targets allow list
1250     *
1251     * Walk through the target's accept list, remove if source is found,
1252     * Then walk through the source's on_accept_list remove target if found.
1253     */
1254     void
1255     del_from_accept(struct Client *source, struct Client *target)
1256     {
1257     dlink_node *ptr;
1258     dlink_node *ptr2;
1259     dlink_node *next_ptr;
1260     dlink_node *next_ptr2;
1261     struct Client *target_p;
1262    
1263     DLINK_FOREACH_SAFE(ptr, next_ptr, target->allow_list.head)
1264     {
1265     target_p = ptr->data;
1266    
1267     if (source == target_p)
1268     {
1269     dlinkDelete(ptr, &target->allow_list);
1270     free_dlink_node(ptr);
1271    
1272     DLINK_FOREACH_SAFE(ptr2, next_ptr2, source->on_allow_list.head)
1273     {
1274     target_p = ptr2->data;
1275    
1276     if (target == target_p)
1277     {
1278     dlinkDelete(ptr2, &source->on_allow_list);
1279     free_dlink_node(ptr2);
1280     }
1281     }
1282     }
1283     }
1284     }
1285    
1286     /* del_all_accepts()
1287     *
1288     * inputs - pointer to exiting client
1289     * output - NONE
1290     * side effects - Walk through given clients allow_list and on_allow_list
1291     * remove all references to this client
1292     */
1293     void
1294     del_all_accepts(struct Client *client_p)
1295     {
1296     dlink_node *ptr, *next_ptr;
1297    
1298     DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->allow_list.head)
1299     del_from_accept(ptr->data, client_p);
1300    
1301     DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head)
1302     del_from_accept(client_p, ptr->data);
1303     }
1304    
1305     /* del_all_their_accepts()
1306     *
1307     * inputs - pointer to exiting client
1308     * output - NONE
1309     * side effects - Walk through given clients on_allow_list
1310     * remove all references to this client,
1311     * allow this client to keep their own allow_list
1312     */
1313     void
1314     del_all_their_accepts(struct Client *client_p)
1315     {
1316     dlink_node *ptr, *next_ptr;
1317    
1318     DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->on_allow_list.head)
1319     del_from_accept(client_p, ptr->data);
1320     }
1321    
1322     /* set_initial_nick()
1323     *
1324     * inputs
1325     * output
1326     * side effects -
1327     *
1328     * This function is only called to set up an initially registering
1329     * client.
1330     */
1331     void
1332     set_initial_nick(struct Client *client_p, struct Client *source_p,
1333     const char *nick)
1334     {
1335     char buf[USERLEN + 1];
1336    
1337     /* Client setting NICK the first time */
1338    
1339     /* This had to be copied here to avoid problems.. */
1340     source_p->tsinfo = CurrentTime;
1341 michael 503 source_p->localClient->registration &= ~REG_NEED_NICK;
1342 adx 30
1343     if (source_p->name[0])
1344     hash_del_client(source_p);
1345    
1346     strlcpy(source_p->name, nick, sizeof(source_p->name));
1347     hash_add_client(source_p);
1348    
1349     /* fd_desc is long enough */
1350     fd_note(&client_p->localClient->fd, "Nick: %s", nick);
1351    
1352     /* They have the nick they want now.. */
1353     client_p->llname[0] = '\0';
1354    
1355 michael 503 if (!source_p->localClient->registration)
1356 adx 30 {
1357     strlcpy(buf, source_p->username, sizeof(buf));
1358    
1359     /*
1360     * USER already received, now we have NICK.
1361     * *NOTE* For servers "NICK" *must* precede the
1362     * user message (giving USER before NICK is possible
1363     * only for local client connection!). register_user
1364     * may reject the client and call exit_client for it
1365     * --must test this and exit m_nick too!!!
1366     */
1367     register_local_user(client_p, source_p, nick, buf);
1368     }
1369     }
1370    
1371     /* change_local_nick()
1372     *
1373     * inputs - pointer to server
1374     * - pointer to client
1375     * - nick
1376     * output -
1377     * side effects - changes nick of a LOCAL user
1378     */
1379     void
1380     change_local_nick(struct Client *client_p, struct Client *source_p, const char *nick)
1381     {
1382     /*
1383     ** Client just changing his/her nick. If he/she is
1384     ** on a channel, send note of change to all clients
1385     ** on that channel. Propagate notice to other servers.
1386     */
1387     if ((source_p->localClient->last_nick_change +
1388     ConfigFileEntry.max_nick_time) < CurrentTime)
1389     source_p->localClient->number_of_nick_changes = 0;
1390     source_p->localClient->last_nick_change = CurrentTime;
1391     source_p->localClient->number_of_nick_changes++;
1392    
1393     if ((ConfigFileEntry.anti_nick_flood &&
1394     (source_p->localClient->number_of_nick_changes
1395     <= ConfigFileEntry.max_nick_changes)) ||
1396     !ConfigFileEntry.anti_nick_flood ||
1397     (IsOper(source_p) && ConfigFileEntry.no_oper_flood))
1398     {
1399     if (irccmp(source_p->name, nick))
1400     source_p->tsinfo = CurrentTime;
1401    
1402     /* XXX - the format of this notice should eventually be changed
1403     * to either %s[%s@%s], or even better would be get_client_name() -bill
1404     */
1405     sendto_realops_flags(UMODE_NCHANGE, L_ALL, "Nick change: From %s to %s [%s@%s]",
1406     source_p->name, nick, source_p->username, source_p->host);
1407     sendto_common_channels_local(source_p, 1, ":%s!%s@%s NICK :%s",
1408     source_p->name, source_p->username,
1409     source_p->host, nick);
1410    
1411     add_history(source_p, 1);
1412    
1413     /* Only hubs care about lazy link nicks not being sent on yet
1414     * lazylink leafs/leafs always send their nicks up to hub,
1415     * hence must always propagate nick changes.
1416     * hubs might not propagate a nick change, if the leaf
1417     * does not know about that client yet.
1418     */
1419     sendto_server(client_p, source_p, NULL, CAP_TS6, NOCAPS, NOFLAGS,
1420     ":%s NICK %s :%lu",
1421     ID(source_p), nick, (unsigned long)source_p->tsinfo);
1422     sendto_server(client_p, source_p, NULL, NOCAPS, CAP_TS6, NOFLAGS,
1423     ":%s NICK %s :%lu",
1424     source_p->name, nick, (unsigned long)source_p->tsinfo);
1425     }
1426     else
1427     {
1428     sendto_one(source_p, form_str(ERR_NICKTOOFAST),
1429     me.name, source_p->name, source_p->name,
1430     nick, ConfigFileEntry.max_nick_time);
1431     return;
1432     }
1433    
1434     /* Finally, add to hash */
1435     if (source_p->name[0])
1436     hash_del_client(source_p);
1437    
1438     strcpy(source_p->name, nick);
1439     hash_add_client(source_p);
1440    
1441     /* Make sure everyone that has this client on its accept list
1442     * loses that reference.
1443     */
1444     del_all_their_accepts(source_p);
1445    
1446     /* fd_desc is long enough */
1447     fd_note(&client_p->localClient->fd, "Nick: %s", nick);
1448     }

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