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Cleanups to 005 code, from ratbox (androsyn).
[irc/rqf/shadowircd.git] / src / s_user.c
1 /*
2 * ircd-ratbox: A slightly useful ircd.
3 * s_user.c: User related functions.
4 *
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
22 * USA
23 *
24 * $Id: s_user.c 3586 2007-11-20 11:16:43Z nenolod $
25 */
26
27 #include "stdinc.h"
28 #include "tools.h"
29 #include "s_user.h"
30 #include "channel.h"
31 #include "class.h"
32 #include "client.h"
33 #include "common.h"
34 #include "hash.h"
35 #include "irc_string.h"
36 #include "sprintf_irc.h"
37 #include "ircd.h"
38 #include "listener.h"
39 #include "msg.h"
40 #include "numeric.h"
41 #include "commio.h"
42 #include "s_conf.h"
43 #include "s_newconf.h"
44 #include "s_log.h"
45 #include "s_serv.h"
46 #include "s_stats.h"
47 #include "scache.h"
48 #include "send.h"
49 #include "supported.h"
50 #include "whowas.h"
51 #include "memory.h"
52 #include "packet.h"
53 #include "reject.h"
54 #include "cache.h"
55 #include "hook.h"
56 #include "monitor.h"
57 #include "snomask.h"
58 #include "blacklist.h"
59 #include "substitution.h"
60
61 static void report_and_set_user_flags(struct Client *, struct ConfItem *);
62 void user_welcome(struct Client *source_p);
63
64 extern char *crypt();
65
66 char umodebuf[128];
67
68 static int orphaned_umodes = 0;
69 int user_modes[256] = {
70 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
71 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
72 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
73 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
74 0, /* @ */
75 0, /* A */
76 0, /* B */
77 0, /* C */
78 UMODE_DEAF, /* D */
79 0, /* E */
80 0, /* F */
81 0, /* G */
82 0, /* H */
83 0, /* I */
84 0, /* J */
85 0, /* K */
86 0, /* L */
87 0, /* M */
88 0, /* N */
89 0, /* O */
90 0, /* P */
91 UMODE_NOFORWARD, /* Q */
92 UMODE_REGONLYMSG, /* R */
93 UMODE_SERVICE, /* S */
94 0, /* T */
95 0, /* U */
96 0, /* V */
97 0, /* W */
98 0, /* X */
99 0, /* Y */
100 0, /* Z */
101 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
102 UMODE_ADMIN, /* a */
103 0, /* b */
104 0, /* c */
105 0, /* d */
106 0, /* e */
107 0, /* f */
108 UMODE_CALLERID, /* g */
109 0, /* h */
110 UMODE_INVISIBLE, /* i */
111 0, /* j */
112 0, /* k */
113 UMODE_LOCOPS, /* l */
114 0, /* m */
115 0, /* n */
116 UMODE_OPER, /* o */
117 0, /* p */
118 0, /* q */
119 0, /* r */
120 UMODE_SERVNOTICE, /* s */
121 0, /* t */
122 0, /* u */
123 0, /* v */
124 UMODE_WALLOP, /* w */
125 0, /* x */
126 0, /* y */
127 UMODE_OPERWALL, /* z */
128 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
129 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
130 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
131 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
132 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
133 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
134 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
135 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
136 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
137 };
138 /* *INDENT-ON* */
139
140 /*
141 * show_lusers -
142 *
143 * inputs - pointer to client
144 * output -
145 * side effects - display to client user counts etc.
146 */
147 int
148 show_lusers(struct Client *source_p)
149 {
150 if(dlink_list_length(&lclient_list) > (unsigned long)MaxClientCount)
151 MaxClientCount = dlink_list_length(&lclient_list);
152
153 if((dlink_list_length(&lclient_list) + dlink_list_length(&serv_list)) >
154 (unsigned long)MaxConnectionCount)
155 MaxConnectionCount = dlink_list_length(&lclient_list) +
156 dlink_list_length(&serv_list);
157
158 sendto_one_numeric(source_p, RPL_LUSERCLIENT, form_str(RPL_LUSERCLIENT),
159 (Count.total - Count.invisi),
160 Count.invisi, dlink_list_length(&global_serv_list));
161
162 if(dlink_list_length(&oper_list) > 0)
163 sendto_one_numeric(source_p, RPL_LUSEROP,
164 form_str(RPL_LUSEROP), dlink_list_length(&oper_list));
165
166 if(dlink_list_length(&unknown_list) > 0)
167 sendto_one_numeric(source_p, RPL_LUSERUNKNOWN,
168 form_str(RPL_LUSERUNKNOWN),
169 dlink_list_length(&unknown_list));
170
171 if(dlink_list_length(&global_channel_list) > 0)
172 sendto_one_numeric(source_p, RPL_LUSERCHANNELS,
173 form_str(RPL_LUSERCHANNELS),
174 dlink_list_length(&global_channel_list));
175
176 sendto_one_numeric(source_p, RPL_LUSERME, form_str(RPL_LUSERME),
177 dlink_list_length(&lclient_list),
178 dlink_list_length(&serv_list));
179
180 sendto_one_numeric(source_p, RPL_LOCALUSERS,
181 form_str(RPL_LOCALUSERS),
182 dlink_list_length(&lclient_list),
183 Count.max_loc,
184 dlink_list_length(&lclient_list),
185 Count.max_loc);
186
187 sendto_one_numeric(source_p, RPL_GLOBALUSERS, form_str(RPL_GLOBALUSERS),
188 Count.total, Count.max_tot,
189 Count.total, Count.max_tot);
190
191 sendto_one_numeric(source_p, RPL_STATSCONN,
192 form_str(RPL_STATSCONN),
193 MaxConnectionCount, MaxClientCount,
194 Count.totalrestartcount);
195
196 return 0;
197 }
198
199 /*
200 ** register_local_user
201 ** This function is called when both NICK and USER messages
202 ** have been accepted for the client, in whatever order. Only
203 ** after this, is the USER message propagated.
204 **
205 ** NICK's must be propagated at once when received, although
206 ** it would be better to delay them too until full info is
207 ** available. Doing it is not so simple though, would have
208 ** to implement the following:
209 **
210 ** (actually it has been implemented already for a while) -orabidoo
211 **
212 ** 1) user telnets in and gives only "NICK foobar" and waits
213 ** 2) another user far away logs in normally with the nick
214 ** "foobar" (quite legal, as this server didn't propagate
215 ** it).
216 ** 3) now this server gets nick "foobar" from outside, but
217 ** has alread the same defined locally. Current server
218 ** would just issue "KILL foobar" to clean out dups. But,
219 ** this is not fair. It should actually request another
220 ** nick from local user or kill him/her...
221 */
222
223 int
224 register_local_user(struct Client *client_p, struct Client *source_p, const char *username)
225 {
226 struct ConfItem *aconf, *xconf;
227 struct User *user = source_p->user;
228 char tmpstr2[IRCD_BUFSIZE];
229 char ipaddr[HOSTIPLEN];
230 char myusername[USERLEN+1];
231 int status;
232
233 s_assert(NULL != source_p);
234 s_assert(MyConnect(source_p));
235 s_assert(source_p->username != username);
236
237 if(source_p == NULL)
238 return -1;
239
240 if(IsAnyDead(source_p))
241 return -1;
242
243 if(ConfigFileEntry.ping_cookie)
244 {
245 if(!(source_p->flags & FLAGS_PINGSENT) && source_p->localClient->random_ping == 0)
246 {
247 source_p->localClient->random_ping = (unsigned long) (rand() * rand()) << 1;
248 sendto_one(source_p, "PING :%08lX",
249 (unsigned long) source_p->localClient->random_ping);
250 source_p->flags |= FLAGS_PINGSENT;
251 return -1;
252 }
253 if(!(source_p->flags & FLAGS_PING_COOKIE))
254 {
255 return -1;
256 }
257 }
258
259 /* hasnt finished client cap negotiation */
260 if(source_p->flags & FLAGS_CLICAP)
261 return -1;
262
263 /* still has DNSbls to validate against */
264 if(dlink_list_length(&source_p->preClient->dnsbl_queries) > 0)
265 return -1;
266
267 client_p->localClient->last = CurrentTime;
268 /* Straight up the maximum rate of flooding... */
269 source_p->localClient->allow_read = MAX_FLOOD_BURST;
270
271 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
272 if(!IsGotId(source_p) && (strchr(username, '[') != NULL))
273 {
274 const char *p;
275 int i = 0;
276
277 p = username;
278
279 while(*p && i < USERLEN)
280 {
281 if(*p != '[')
282 myusername[i++] = *p;
283 p++;
284 }
285
286 myusername[i] = '\0';
287 username = myusername;
288 }
289
290 if((status = check_client(client_p, source_p, username)) < 0)
291 return (CLIENT_EXITED);
292
293 /* Apply nick override */
294 if(*source_p->preClient->spoofnick)
295 {
296 del_from_client_hash(source_p->name, source_p);
297 strlcpy(source_p->name, source_p->preClient->spoofnick, NICKLEN + 1);
298 add_to_client_hash(source_p->name, source_p);
299 comm_note(source_p->localClient->F->fd, "Nick: %s", source_p->name);
300 }
301
302 if(!valid_hostname(source_p->host))
303 {
304 sendto_one_notice(source_p, ":*** Notice -- You have an illegal character in your hostname");
305
306 strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
307 }
308
309
310 aconf = source_p->localClient->att_conf;
311
312 if(aconf == NULL)
313 {
314 exit_client(client_p, source_p, &me, "*** Not Authorised");
315 return (CLIENT_EXITED);
316 }
317
318 if(!IsGotId(source_p))
319 {
320 const char *p;
321 int i = 0;
322
323 if(IsNeedIdentd(aconf))
324 {
325 ServerStats->is_ref++;
326 sendto_one_notice(source_p, ":*** Notice -- You need to install identd to use this server");
327 exit_client(client_p, source_p, &me, "Install identd");
328 return (CLIENT_EXITED);
329 }
330
331 /* dont replace username if its supposed to be spoofed --fl */
332 if(!IsConfDoSpoofIp(aconf) || !strchr(aconf->name, '@'))
333 {
334 p = username;
335
336 if(!IsNoTilde(aconf))
337 source_p->username[i++] = '~';
338
339 while (*p && i < USERLEN)
340 {
341 if(*p != '[')
342 source_p->username[i++] = *p;
343 p++;
344 }
345
346 source_p->username[i] = '\0';
347 }
348 }
349
350 if(IsNeedSasl(aconf) && !*user->suser)
351 {
352 ServerStats->is_ref++;
353 sendto_one_notice(source_p, ":*** Notice -- You need to identify via SASL to use this server");
354 exit_client(client_p, source_p, &me, "SASL access only");
355 return (CLIENT_EXITED);
356 }
357
358 /* password check */
359 if(!EmptyString(aconf->passwd))
360 {
361 const char *encr;
362
363 if(EmptyString(source_p->localClient->passwd))
364 encr = "";
365 else if(IsConfEncrypted(aconf))
366 encr = crypt(source_p->localClient->passwd, aconf->passwd);
367 else
368 encr = source_p->localClient->passwd;
369
370 if(strcmp(encr, aconf->passwd))
371 {
372 ServerStats->is_ref++;
373 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
374 exit_client(client_p, source_p, &me, "Bad Password");
375 return (CLIENT_EXITED);
376 }
377
378 /* clear password only if used now, otherwise send it
379 * to services -- jilles */
380 if(source_p->localClient->passwd)
381 {
382 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
383 MyFree(source_p->localClient->passwd);
384 source_p->localClient->passwd = NULL;
385 }
386 }
387
388 /* report if user has &^>= etc. and set flags as needed in source_p */
389 report_and_set_user_flags(source_p, aconf);
390
391 /* Limit clients */
392 /*
393 * We want to be able to have servers and F-line clients
394 * connect, so save room for "buffer" connections.
395 * Smaller servers may want to decrease this, and it should
396 * probably be just a percentage of the MAXCLIENTS...
397 * -Taner
398 */
399 /* Except "F:" clients */
400 if(dlink_list_length(&lclient_list) >=
401 (unsigned long)GlobalSetOptions.maxclients && !IsConfExemptLimits(aconf))
402 {
403 sendto_realops_snomask(SNO_FULL, L_ALL,
404 "Too many clients, rejecting %s[%s].", source_p->name, source_p->host);
405
406 ServerStats->is_ref++;
407 exit_client(client_p, source_p, &me, "Sorry, server is full - try later");
408 return (CLIENT_EXITED);
409 }
410
411 /* kline exemption extends to xline too */
412 if(!IsExemptKline(source_p) &&
413 (xconf = find_xline(source_p->info, 1)) != NULL)
414 {
415 ServerStats->is_ref++;
416 add_reject(source_p, xconf->name, NULL);
417 exit_client(client_p, source_p, &me, "Bad user info");
418 return CLIENT_EXITED;
419 }
420
421 /* dnsbl check */
422 if (source_p->preClient->dnsbl_listed != NULL)
423 {
424 if (IsExemptKline(source_p) || IsConfExemptDNSBL(aconf))
425 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s, but you are exempt",
426 source_p->sockhost, source_p->preClient->dnsbl_listed->host);
427 else
428 {
429 dlink_list varlist = { NULL, NULL, 0 };
430
431 substitution_append_var(&varlist, "nick", source_p->name);
432 substitution_append_var(&varlist, "ip", source_p->sockhost);
433 substitution_append_var(&varlist, "host", source_p->host);
434 substitution_append_var(&varlist, "dnsbl-host", source_p->preClient->dnsbl_listed->host);
435 substitution_append_var(&varlist, "network-name", ServerInfo.network_name);
436
437 ServerStats->is_ref++;
438
439 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
440 me.name, source_p->name,
441 substitution_parse(source_p->preClient->dnsbl_listed->reject_reason, &varlist));
442
443 substitution_free(&varlist);
444
445 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s",
446 source_p->sockhost, source_p->preClient->dnsbl_listed->host);
447 source_p->preClient->dnsbl_listed->hits++;
448 add_reject(source_p, NULL, NULL);
449 exit_client(client_p, source_p, &me, "*** Banned (DNS blacklist)");
450 return CLIENT_EXITED;
451 }
452 }
453
454 /* valid user name check */
455
456 if(!valid_username(source_p->username))
457 {
458 sendto_realops_snomask(SNO_REJ, L_ALL,
459 "Invalid username: %s (%s@%s)",
460 source_p->name, source_p->username, source_p->host);
461 ServerStats->is_ref++;
462 sendto_one_notice(source_p, ":*** Your username is invalid. Please make sure that your username contains "
463 "only alphanumeric characters.");
464 ircsprintf(tmpstr2, "Invalid username [%s]", source_p->username);
465 exit_client(client_p, source_p, &me, tmpstr2);
466 return (CLIENT_EXITED);
467 }
468
469 /* end of valid user name check */
470
471 /* Store original hostname -- jilles */
472 strlcpy(source_p->orighost, source_p->host, HOSTLEN + 1);
473
474 /* Spoof user@host */
475 if(*source_p->preClient->spoofuser)
476 strlcpy(source_p->username, source_p->preClient->spoofuser, USERLEN + 1);
477 if(*source_p->preClient->spoofhost)
478 {
479 strlcpy(source_p->host, source_p->preClient->spoofhost, HOSTLEN + 1);
480 if (irccmp(source_p->host, source_p->orighost))
481 SetDynSpoof(source_p);
482 }
483
484 source_p->umodes |= ConfigFileEntry.default_umodes & ~ConfigFileEntry.oper_only_umodes & ~orphaned_umodes;
485
486 call_hook(h_new_local_user, source_p);
487
488 /* If they have died in send_* or were thrown out by the
489 * new_local_user hook don't do anything. */
490 if(IsAnyDead(source_p))
491 return CLIENT_EXITED;
492
493 /* To avoid inconsistencies, do not abort the registration
494 * starting from this point -- jilles
495 */
496 inetntop_sock((struct sockaddr *)&source_p->localClient->ip, ipaddr, sizeof(ipaddr));
497
498 sendto_realops_snomask(SNO_CCONN, L_ALL,
499 "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
500 source_p->name, source_p->username, source_p->orighost,
501 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
502 get_client_class(source_p), source_p->info);
503
504 sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
505 "CLICONN %s %s %s %s %s %s 0 %s",
506 source_p->name, source_p->username, source_p->orighost,
507 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
508 get_client_class(source_p),
509 /* mirc can sometimes send ips here */
510 show_ip(NULL, source_p) ? source_p->localClient->fullcaps : "<hidden> <hidden>",
511 source_p->info);
512
513 add_to_hostname_hash(source_p->orighost, source_p);
514
515 /* Allocate a UID if it was not previously allocated.
516 * If this already occured, it was probably during SASL auth...
517 */
518 if(!*source_p->id)
519 {
520 strcpy(source_p->id, generate_uid());
521 add_to_id_hash(source_p->id, source_p);
522 }
523
524 if (source_p->umodes & UMODE_INVISIBLE)
525 Count.invisi++;
526
527 s_assert(!IsClient(source_p));
528 del_unknown_ip(source_p);
529 dlinkMoveNode(&source_p->localClient->tnode, &unknown_list, &lclient_list);
530 SetClient(source_p);
531
532 source_p->servptr = &me;
533 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
534
535 /* Increment our total user count here */
536 if(++Count.total > Count.max_tot)
537 Count.max_tot = Count.total;
538
539 source_p->localClient->allow_read = MAX_FLOOD_BURST;
540
541 Count.totalrestartcount++;
542
543 s_assert(source_p->localClient != NULL);
544
545 if(dlink_list_length(&lclient_list) > (unsigned long)Count.max_loc)
546 {
547 Count.max_loc = dlink_list_length(&lclient_list);
548 if(!(Count.max_loc % 10))
549 sendto_realops_snomask(SNO_GENERAL, L_ALL,
550 "New Max Local Clients: %d", Count.max_loc);
551 }
552
553 /* they get a reduced limit */
554 if(find_tgchange(source_p->sockhost))
555 USED_TARGETS(source_p) = 6;
556
557 monitor_signon(source_p);
558 user_welcome(source_p);
559
560 free_pre_client(source_p);
561
562 return (introduce_client(client_p, source_p, user, source_p->name, 1));
563 }
564
565 /*
566 * introduce_clients
567 *
568 * inputs -
569 * output -
570 * side effects - This common function introduces a client to the rest
571 * of the net, either from a local client connect or
572 * from a remote connect.
573 */
574 int
575 introduce_client(struct Client *client_p, struct Client *source_p, struct User *user, const char *nick, int use_euid)
576 {
577 static char ubuf[12];
578 struct Client *identifyservice_p;
579 char *p;
580 hook_data_umode_changed hdata;
581 hook_data_client hdata2;
582
583 if(MyClient(source_p))
584 send_umode(source_p, source_p, 0, 0, ubuf);
585 else
586 send_umode(NULL, source_p, 0, 0, ubuf);
587
588 if(!*ubuf)
589 {
590 ubuf[0] = '+';
591 ubuf[1] = '\0';
592 }
593
594 /* if it has an ID, introduce it with its id to TS6 servers,
595 * otherwise introduce it normally to all.
596 */
597 if(has_id(source_p))
598 {
599 char sockhost[HOSTLEN];
600 if(source_p->sockhost[0] == ':')
601 {
602 sockhost[0] = '0';
603 sockhost[1] = '\0';
604 strlcat(sockhost, source_p->sockhost, sizeof(sockhost));
605 } else
606 strcpy(sockhost, source_p->sockhost);
607
608 if (use_euid)
609 sendto_server(client_p, NULL, CAP_EUID | CAP_TS6, NOCAPS,
610 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
611 source_p->servptr->id, nick,
612 source_p->hopcount + 1,
613 (long) source_p->tsinfo, ubuf,
614 source_p->username, source_p->host,
615 IsIPSpoof(source_p) ? "0" : sockhost,
616 source_p->id,
617 IsDynSpoof(source_p) ? source_p->orighost : "*",
618 EmptyString(source_p->user->suser) ? "*" : source_p->user->suser,
619 source_p->info);
620
621 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS,
622 ":%s UID %s %d %ld %s %s %s %s %s :%s",
623 source_p->servptr->id, nick,
624 source_p->hopcount + 1,
625 (long) source_p->tsinfo, ubuf,
626 source_p->username, source_p->host,
627 IsIPSpoof(source_p) ? "0" : sockhost,
628 source_p->id, source_p->info);
629
630 sendto_server(client_p, NULL, NOCAPS, CAP_TS6,
631 "NICK %s %d %ld %s %s %s %s :%s",
632 nick, source_p->hopcount + 1,
633 (long) source_p->tsinfo,
634 ubuf, source_p->username, source_p->host,
635 source_p->servptr->name, source_p->info);
636 }
637 else
638 sendto_server(client_p, NULL, NOCAPS, NOCAPS,
639 "NICK %s %d %ld %s %s %s %s :%s",
640 nick, source_p->hopcount + 1,
641 (long) source_p->tsinfo,
642 ubuf, source_p->username, source_p->host,
643 source_p->servptr->name, source_p->info);
644
645 if (IsDynSpoof(source_p))
646 {
647 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * REALHOST %s",
648 use_id(source_p), source_p->orighost);
649 sendto_server(client_p, NULL, NOCAPS, CAP_TS6, ":%s ENCAP * REALHOST %s",
650 source_p->name, source_p->orighost);
651 }
652 if (!EmptyString(source_p->user->suser))
653 {
654 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * LOGIN %s",
655 use_id(source_p), source_p->user->suser);
656 sendto_server(client_p, NULL, NOCAPS, CAP_TS6, ":%s ENCAP * LOGIN %s",
657 source_p->name, source_p->user->suser);
658 }
659
660 if(MyConnect(source_p) && source_p->localClient->passwd)
661 {
662 if (ConfigFileEntry.identifyservice[0] != '\0' &&
663 ConfigFileEntry.identifycommand[0] != '\0')
664 {
665 /* use user@server */
666 p = strchr(ConfigFileEntry.identifyservice, '@');
667 if (p != NULL)
668 identifyservice_p = find_named_client(p + 1);
669 else
670 identifyservice_p = NULL;
671 if (identifyservice_p != NULL)
672 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s",
673 get_id(source_p, identifyservice_p),
674 ConfigFileEntry.identifyservice,
675 ConfigFileEntry.identifycommand,
676 source_p->localClient->passwd);
677 }
678 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
679 MyFree(source_p->localClient->passwd);
680 source_p->localClient->passwd = NULL;
681 }
682
683 /* let modules providing usermodes know that we've got a new user,
684 * why is this here? -- well, some modules need to be able to send out new
685 * information about a client, so this was the best place to do it
686 * --nenolod
687 */
688 hdata.client = source_p;
689 hdata.oldumodes = 0;
690 hdata.oldsnomask = 0;
691 call_hook(h_umode_changed, &hdata);
692
693 /* On the other hand, some modules need to know when a client is
694 * being introduced, period.
695 * --gxti
696 */
697 hdata2.client = client_p;
698 hdata2.target = source_p;
699 call_hook(h_introduce_client, &hdata2);
700
701 return 0;
702 }
703
704 /*
705 * valid_hostname - check hostname for validity
706 *
707 * Inputs - pointer to user
708 * Output - YES if valid, NO if not
709 * Side effects - NONE
710 *
711 * NOTE: this doesn't allow a hostname to begin with a dot and
712 * will not allow more dots than chars.
713 */
714 int
715 valid_hostname(const char *hostname)
716 {
717 const char *p = hostname;
718 int found_sep = 0;
719
720 s_assert(NULL != p);
721
722 if(hostname == NULL)
723 return NO;
724
725 if('.' == *p || ':' == *p)
726 return NO;
727
728 while (*p)
729 {
730 if(!IsHostChar(*p))
731 return NO;
732 if(*p == '.' || *p == ':')
733 found_sep++;
734 p++;
735 }
736
737 if(found_sep == 0)
738 return(NO);
739
740 return (YES);
741 }
742
743 /*
744 * valid_username - check username for validity
745 *
746 * Inputs - pointer to user
747 * Output - YES if valid, NO if not
748 * Side effects - NONE
749 *
750 * Absolutely always reject any '*' '!' '?' '@' in an user name
751 * reject any odd control characters names.
752 * Allow '.' in username to allow for "first.last"
753 * style of username
754 */
755 int
756 valid_username(const char *username)
757 {
758 int dots = 0;
759 const char *p = username;
760
761 s_assert(NULL != p);
762
763 if(username == NULL)
764 return NO;
765
766 if('~' == *p)
767 ++p;
768
769 /* reject usernames that don't start with an alphanum
770 * i.e. reject jokers who have '-@somehost' or '.@somehost'
771 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
772 */
773 if(!IsAlNum(*p))
774 return NO;
775
776 while (*++p)
777 {
778 if((*p == '.') && ConfigFileEntry.dots_in_ident)
779 {
780 dots++;
781 if(dots > ConfigFileEntry.dots_in_ident)
782 return NO;
783 if(!IsUserChar(p[1]))
784 return NO;
785 }
786 else if(!IsUserChar(*p))
787 return NO;
788 }
789 return YES;
790 }
791
792 /* report_and_set_user_flags
793 *
794 * Inputs - pointer to source_p
795 * - pointer to aconf for this user
796 * Output - NONE
797 * Side effects -
798 * Report to user any special flags they are getting, and set them.
799 */
800
801 static void
802 report_and_set_user_flags(struct Client *source_p, struct ConfItem *aconf)
803 {
804 /* If this user is being spoofed, tell them so */
805 if(IsConfDoSpoofIp(aconf))
806 {
807 sendto_one_notice(source_p, ":*** Spoofing your IP. congrats.");
808 }
809
810 /* If this user is in the exception class, Set it "E lined" */
811 if(IsConfExemptKline(aconf))
812 {
813 SetExemptKline(source_p);
814 sendto_one_notice(source_p, ":*** You are exempt from K/G/X lines. congrats.");
815 }
816
817 if(IsConfExemptGline(aconf))
818 {
819 SetExemptGline(source_p);
820
821 /* dont send both a kline and gline exempt notice */
822 if(!IsConfExemptKline(aconf))
823 sendto_one_notice(source_p, ":*** You are exempt from G lines.");
824 }
825
826 if(IsConfExemptDNSBL(aconf))
827 /* kline exempt implies this, don't send both */
828 if(!IsConfExemptKline(aconf))
829 sendto_one_notice(source_p, ":*** You are exempt from DNS blacklists.");
830
831 /* If this user is exempt from user limits set it F lined" */
832 if(IsConfExemptLimits(aconf))
833 {
834 sendto_one_notice(source_p, ":*** You are exempt from user limits. congrats.");
835 }
836
837 if(IsConfExemptFlood(aconf))
838 {
839 SetExemptFlood(source_p);
840 sendto_one_notice(source_p, ":*** You are exempt from flood limits.");
841 }
842
843 if(IsConfExemptSpambot(aconf))
844 {
845 SetExemptSpambot(source_p);
846 sendto_one_notice(source_p, ":*** You are exempt from spambot checks.");
847 }
848
849 if(IsConfExemptJupe(aconf))
850 {
851 SetExemptJupe(source_p);
852 sendto_one_notice(source_p, ":*** You are exempt from juped channel warnings.");
853 }
854
855 if(IsConfExemptResv(aconf))
856 {
857 SetExemptResv(source_p);
858 sendto_one_notice(source_p, ":*** You are exempt from resvs.");
859 }
860
861 if(IsConfExemptShide(aconf))
862 {
863 SetExemptShide(source_p);
864 sendto_one_notice(source_p, ":*** You are exempt from serverhiding.");
865 }
866 }
867
868 /*
869 * user_mode - set get current users mode
870 *
871 * m_umode() added 15/10/91 By Darren Reed.
872 * parv[0] - sender
873 * parv[1] - username to change mode for
874 * parv[2] - modes to change
875 */
876 int
877 user_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
878 {
879 int flag;
880 int i;
881 char *m;
882 const char *pm;
883 struct Client *target_p;
884 int what, setflags;
885 int badflag = NO; /* Only send one bad flag notice */
886 int showsnomask = NO;
887 unsigned int setsnomask;
888 char buf[BUFSIZE];
889 hook_data_umode_changed hdata;
890
891 what = MODE_ADD;
892
893 if(parc < 2)
894 {
895 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "MODE");
896 return 0;
897 }
898
899 if((target_p = MyClient(source_p) ? find_named_person(parv[1]) : find_person(parv[1])) == NULL)
900 {
901 if(MyConnect(source_p))
902 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
903 form_str(ERR_NOSUCHCHANNEL), parv[1]);
904 return 0;
905 }
906
907 /* Dont know why these were commented out..
908 * put them back using new sendto() funcs
909 */
910
911 if(IsServer(source_p))
912 {
913 sendto_realops_snomask(SNO_GENERAL, L_ADMIN,
914 "*** Mode for User %s from %s", parv[1], source_p->name);
915 return 0;
916 }
917
918 if(source_p != target_p || target_p->from != source_p->from)
919 {
920 sendto_one(source_p, form_str(ERR_USERSDONTMATCH), me.name, source_p->name);
921 return 0;
922 }
923
924 if(parc < 3)
925 {
926 m = buf;
927 *m++ = '+';
928
929 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
930 if (source_p->umodes & user_modes[i])
931 *m++ = (char) i;
932
933 *m = '\0';
934 sendto_one_numeric(source_p, RPL_UMODEIS, form_str(RPL_UMODEIS), buf);
935
936 if (source_p->snomask != 0)
937 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
938 construct_snobuf(source_p->snomask));
939
940 return 0;
941 }
942
943 /* find flags already set for user */
944 setflags = source_p->umodes;
945 setsnomask = source_p->snomask;
946
947 /*
948 * parse mode change string(s)
949 */
950 for (pm = parv[2]; *pm; pm++)
951 switch (*pm)
952 {
953 case '+':
954 what = MODE_ADD;
955 break;
956 case '-':
957 what = MODE_DEL;
958 break;
959
960 case 'o':
961 if(what == MODE_ADD)
962 {
963 if(IsServer(client_p) && !IsOper(source_p))
964 {
965 ++Count.oper;
966 SetOper(source_p);
967 dlinkAddAlloc(source_p, &oper_list);
968 }
969 }
970 else
971 {
972 /* Only decrement the oper counts if an oper to begin with
973 * found by Pat Szuta, Perly , perly@xnet.com
974 */
975
976 if(!IsOper(source_p))
977 break;
978
979 ClearOper(source_p);
980
981 Count.oper--;
982
983 if(MyConnect(source_p))
984 {
985 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
986 if (!(source_p->umodes & UMODE_SERVNOTICE) && source_p->snomask != 0)
987 {
988 source_p->snomask = 0;
989 showsnomask = YES;
990 }
991 source_p->flags2 &= ~OPER_FLAGS;
992
993 MyFree(source_p->localClient->opername);
994 source_p->localClient->opername = NULL;
995
996 dlinkFindDestroy(source_p, &local_oper_list);
997 }
998
999 dlinkFindDestroy(source_p, &oper_list);
1000 }
1001 break;
1002
1003 /* we may not get these,
1004 * but they shouldnt be in default
1005 */
1006
1007 /* can only be set on burst */
1008 case 'S':
1009 case ' ':
1010 case '\n':
1011 case '\r':
1012 case '\t':
1013 break;
1014
1015 case 's':
1016 if (MyConnect(source_p))
1017 {
1018 if(!IsOper(source_p)
1019 && (ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE))
1020 {
1021 if (what == MODE_ADD || source_p->umodes & UMODE_SERVNOTICE)
1022 badflag = YES;
1023 continue;
1024 }
1025 showsnomask = YES;
1026 if(what == MODE_ADD)
1027 {
1028 if (parc > 3)
1029 source_p->snomask = parse_snobuf_to_mask(source_p->snomask, parv[3]);
1030 else
1031 source_p->snomask |= SNO_GENERAL;
1032 }
1033 else
1034 source_p->snomask = 0;
1035 if (source_p->snomask != 0)
1036 source_p->umodes |= UMODE_SERVNOTICE;
1037 else
1038 source_p->umodes &= ~UMODE_SERVNOTICE;
1039 break;
1040 }
1041 /* FALLTHROUGH */
1042 default:
1043 if (MyConnect(source_p) && *pm == 'Q' && !ConfigChannel.use_forward) {
1044 badflag = YES;
1045 break;
1046 }
1047
1048 if((flag = user_modes[(unsigned char) *pm]))
1049 {
1050 if(MyConnect(source_p)
1051 && ((!IsOper(source_p)
1052 && (ConfigFileEntry.oper_only_umodes & flag))
1053 || (orphaned_umodes & flag)))
1054 {
1055 if (what == MODE_ADD || source_p->umodes & flag)
1056 badflag = YES;
1057 }
1058 else
1059 {
1060 if(what == MODE_ADD)
1061 source_p->umodes |= flag;
1062 else
1063 source_p->umodes &= ~flag;
1064 }
1065 }
1066 else
1067 {
1068 if(MyConnect(source_p))
1069 badflag = YES;
1070 }
1071 break;
1072 }
1073
1074 if(badflag)
1075 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG), me.name, source_p->name);
1076
1077 if(MyClient(source_p) && (source_p->snomask & SNO_NCHANGE) && !IsOperN(source_p))
1078 {
1079 sendto_one_notice(source_p, ":*** You need oper and nick_changes flag for +s +n");
1080 source_p->snomask &= ~SNO_NCHANGE; /* only tcm's really need this */
1081 }
1082
1083 if(MyClient(source_p) && (source_p->umodes & UMODE_OPERWALL) && !IsOperOperwall(source_p))
1084 {
1085 sendto_one_notice(source_p, ":*** You need oper and operwall flag for +z");
1086 source_p->umodes &= ~UMODE_OPERWALL;
1087 }
1088
1089 if(MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1090 (!IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p)))
1091 {
1092 sendto_one_notice(source_p, ":*** You need oper and admin flag for +a");
1093 source_p->umodes &= ~UMODE_ADMIN;
1094 }
1095
1096 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1097 hdata.client = source_p;
1098 hdata.oldumodes = setflags;
1099 hdata.oldsnomask = setsnomask;
1100 call_hook(h_umode_changed, &hdata);
1101
1102 if(!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1103 ++Count.invisi;
1104 if((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1105 --Count.invisi;
1106 /*
1107 * compare new flags with old flags and send string which
1108 * will cause servers to update correctly.
1109 */
1110 send_umode_out(client_p, source_p, setflags);
1111 if (showsnomask && MyConnect(source_p))
1112 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1113 construct_snobuf(source_p->snomask));
1114
1115 return (0);
1116 }
1117
1118 /*
1119 * send the MODE string for user (user) to connection client_p
1120 * -avalon
1121 */
1122 void
1123 send_umode(struct Client *client_p, struct Client *source_p, int old, int sendmask, char *umode_buf)
1124 {
1125 int i;
1126 int flag;
1127 char *m;
1128 int what = 0;
1129
1130 /*
1131 * build a string in umode_buf to represent the change in the user's
1132 * mode between the new (source_p->flag) and 'old'.
1133 */
1134 m = umode_buf;
1135 *m = '\0';
1136
1137 for (i = 0; i < 128; i++)
1138 {
1139 flag = user_modes[i];
1140
1141 if((flag & old) && !(source_p->umodes & flag))
1142 {
1143 if(what == MODE_DEL)
1144 *m++ = (char) i;
1145 else
1146 {
1147 what = MODE_DEL;
1148 *m++ = '-';
1149 *m++ = (char) i;
1150 }
1151 }
1152 else if(!(flag & old) && (source_p->umodes & flag))
1153 {
1154 if(what == MODE_ADD)
1155 *m++ = (char) i;
1156 else
1157 {
1158 what = MODE_ADD;
1159 *m++ = '+';
1160 *m++ = (char) i;
1161 }
1162 }
1163 }
1164 *m = '\0';
1165
1166 if(*umode_buf && client_p)
1167 sendto_one(client_p, ":%s MODE %s :%s", source_p->name, source_p->name, umode_buf);
1168 }
1169
1170 /*
1171 * send_umode_out
1172 *
1173 * inputs -
1174 * output - NONE
1175 * side effects -
1176 */
1177 void
1178 send_umode_out(struct Client *client_p, struct Client *source_p, int old)
1179 {
1180 struct Client *target_p;
1181 char buf[BUFSIZE];
1182 dlink_node *ptr;
1183
1184 send_umode(NULL, source_p, old, 0, buf);
1185
1186 DLINK_FOREACH(ptr, serv_list.head)
1187 {
1188 target_p = ptr->data;
1189
1190 if((target_p != client_p) && (target_p != source_p) && (*buf))
1191 {
1192 sendto_one(target_p, ":%s MODE %s :%s",
1193 get_id(source_p, target_p),
1194 get_id(source_p, target_p), buf);
1195 }
1196 }
1197
1198 if(client_p && MyClient(client_p))
1199 send_umode(client_p, source_p, old, 0, buf);
1200 }
1201
1202 /*
1203 * user_welcome
1204 *
1205 * inputs - client pointer to client to welcome
1206 * output - NONE
1207 * side effects -
1208 */
1209 void
1210 user_welcome(struct Client *source_p)
1211 {
1212 sendto_one_numeric(source_p, RPL_WELCOME, form_str(RPL_WELCOME), ServerInfo.network_name, source_p->name);
1213 sendto_one_numeric(source_p, RPL_YOURHOST, form_str(RPL_YOURHOST),
1214 get_listener_name(source_p->localClient->listener), ircd_version);
1215 sendto_one_numeric(source_p, RPL_CREATED, form_str(RPL_CREATED), creation);
1216 sendto_one_numeric(source_p, RPL_MYINFO, form_str(RPL_MYINFO), me.name, ircd_version, umodebuf);
1217
1218 show_isupport(source_p);
1219
1220 show_lusers(source_p);
1221
1222 if(ConfigFileEntry.short_motd)
1223 {
1224 sendto_one_notice(source_p, ":*** Notice -- motd was last changed at %s", user_motd_changed);
1225 sendto_one_notice(source_p, ":*** Notice -- Please read the motd if you haven't read it");
1226
1227 sendto_one(source_p, form_str(RPL_MOTDSTART),
1228 me.name, source_p->name, me.name);
1229
1230 sendto_one(source_p, form_str(RPL_MOTD),
1231 me.name, source_p->name, "*** This is the short motd ***");
1232
1233 sendto_one(source_p, form_str(RPL_ENDOFMOTD), me.name, source_p->name);
1234 }
1235 else
1236 send_user_motd(source_p);
1237 }
1238
1239 /* oper_up()
1240 *
1241 * inputs - pointer to given client to oper
1242 * - pointer to ConfItem to use
1243 * output - none
1244 * side effects - opers up source_p using aconf for reference
1245 */
1246 int
1247 oper_up(struct Client *source_p, struct oper_conf *oper_p)
1248 {
1249 unsigned int old = source_p->umodes, oldsnomask = source_p->snomask;
1250 hook_data_umode_changed hdata;
1251
1252 SetOper(source_p);
1253
1254 if(oper_p->umodes)
1255 source_p->umodes |= oper_p->umodes;
1256 else if(ConfigFileEntry.oper_umodes)
1257 source_p->umodes |= ConfigFileEntry.oper_umodes;
1258 else
1259 source_p->umodes |= DEFAULT_OPER_UMODES;
1260
1261 if (oper_p->snomask)
1262 {
1263 source_p->snomask |= oper_p->snomask;
1264 source_p->umodes |= UMODE_SERVNOTICE;
1265 }
1266 else if (source_p->umodes & UMODE_SERVNOTICE)
1267 {
1268 /* Only apply these if +s is already set -- jilles */
1269 if (ConfigFileEntry.oper_snomask)
1270 source_p->snomask |= ConfigFileEntry.oper_snomask;
1271 else
1272 source_p->snomask |= DEFAULT_OPER_SNOMASK;
1273 }
1274
1275 Count.oper++;
1276
1277 SetExemptKline(source_p);
1278
1279 source_p->flags2 |= oper_p->flags;
1280 DupString(source_p->localClient->opername, oper_p->name);
1281
1282 dlinkAddAlloc(source_p, &local_oper_list);
1283 dlinkAddAlloc(source_p, &oper_list);
1284
1285 if(IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1286 source_p->umodes |= UMODE_ADMIN;
1287 if(!IsOperN(source_p))
1288 source_p->snomask &= ~SNO_NCHANGE;
1289 if(!IsOperOperwall(source_p))
1290 source_p->umodes &= ~UMODE_OPERWALL;
1291 hdata.client = source_p;
1292 hdata.oldumodes = old;
1293 hdata.oldsnomask = oldsnomask;
1294 call_hook(h_umode_changed, &hdata);
1295
1296 sendto_realops_snomask(SNO_GENERAL, L_ALL,
1297 "%s (%s@%s) is now an operator", source_p->name,
1298 source_p->username, source_p->host);
1299 if(!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1300 ++Count.invisi;
1301 if((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1302 --Count.invisi;
1303 send_umode_out(source_p, source_p, old);
1304 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1305 construct_snobuf(source_p->snomask));
1306 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1307 sendto_one_notice(source_p, ":*** Oper privs are %s", get_oper_privs(oper_p->flags));
1308 send_oper_motd(source_p);
1309
1310 return (1);
1311 }
1312
1313 /*
1314 * find_umode_slot
1315 *
1316 * inputs - NONE
1317 * outputs - an available umode bitmask or
1318 * 0 if no umodes are available
1319 * side effects - NONE
1320 */
1321 unsigned int
1322 find_umode_slot(void)
1323 {
1324 unsigned int all_umodes = 0, my_umode = 0, i;
1325
1326 for (i = 0; i < 128; i++)
1327 all_umodes |= user_modes[i];
1328
1329 for (my_umode = 1; my_umode && (all_umodes & my_umode);
1330 my_umode <<= 1);
1331
1332 return my_umode;
1333 }
1334
1335 void
1336 construct_umodebuf(void)
1337 {
1338 int i;
1339 char *ptr = umodebuf;
1340 static int prev_user_modes[128];
1341
1342 *ptr = '\0';
1343
1344 for (i = 0; i < 128; i++)
1345 {
1346 if (prev_user_modes[i] != 0 && prev_user_modes[i] != user_modes[i])
1347 {
1348 if (user_modes[i] == 0)
1349 {
1350 orphaned_umodes |= prev_user_modes[i];
1351 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Umode +%c is now orphaned", i);
1352 }
1353 else
1354 {
1355 orphaned_umodes &= ~prev_user_modes[i];
1356 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Orphaned umode +%c is picked up by module", i);
1357 }
1358 user_modes[i] = prev_user_modes[i];
1359 }
1360 else
1361 prev_user_modes[i] = user_modes[i];
1362 if (user_modes[i])
1363 *ptr++ = (char) i;
1364 }
1365
1366 *ptr++ = '\0';
1367 }
1368
1369 void
1370 change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
1371 const char *host, int newts, char *format, ...)
1372 {
1373 dlink_node *ptr;
1374 struct Channel *chptr;
1375 struct membership *mscptr;
1376 int changed = irccmp(target_p->name, nick);
1377 int changed_case = strcmp(target_p->name, nick);
1378 int do_qjm = irccmp(target_p->username, user) || irccmp(target_p->host, host);
1379 char mode[10], modeval[NICKLEN * 2 + 2], reason[256], *mptr;
1380 va_list ap;
1381
1382 modeval[0] = '\0';
1383
1384 if(changed)
1385 {
1386 target_p->tsinfo = newts;
1387 monitor_signoff(target_p);
1388 }
1389 invalidate_bancache_user(target_p);
1390
1391 if(do_qjm)
1392 {
1393 va_start(ap, format);
1394 vsnprintf(reason, 255, format, ap);
1395 va_end(ap);
1396
1397 sendto_common_channels_local_butone(target_p, ":%s!%s@%s QUIT :%s",
1398 target_p->name, target_p->username, target_p->host,
1399 reason);
1400
1401 DLINK_FOREACH(ptr, target_p->user->channel.head)
1402 {
1403 mscptr = ptr->data;
1404 chptr = mscptr->chptr;
1405 mptr = mode;
1406
1407 if(is_chanop(mscptr))
1408 {
1409 *mptr++ = 'o';
1410 strcat(modeval, nick);
1411 strcat(modeval, " ");
1412 }
1413
1414 if(is_voiced(mscptr))
1415 {
1416 *mptr++ = 'v';
1417 strcat(modeval, nick);
1418 }
1419
1420 *mptr = '\0';
1421
1422 sendto_channel_local_butone(target_p, ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
1423 nick, user, host, chptr->chname);
1424 if(*mode)
1425 sendto_channel_local_butone(target_p, ALL_MEMBERS, chptr,
1426 ":%s MODE %s +%s %s",
1427 target_p->servptr->name,
1428 chptr->chname, mode, modeval);
1429
1430 *modeval = '\0';
1431 }
1432
1433 if(MyClient(target_p) && changed_case)
1434 sendto_one(target_p, ":%s!%s@%s NICK %s",
1435 target_p->name, target_p->username, target_p->host, nick);
1436 }
1437 else if(changed_case)
1438 {
1439 sendto_common_channels_local(target_p, ":%s!%s@%s NICK :%s",
1440 target_p->name, target_p->username,
1441 target_p->host, nick);
1442 }
1443
1444 strlcpy(target_p->username, user, sizeof target_p->username);
1445 strlcpy(target_p->host, host, sizeof target_p->host);
1446
1447 if (changed)
1448 add_history(target_p, 1);
1449
1450 del_from_client_hash(target_p->name, target_p);
1451 strlcpy(target_p->name, nick, NICKLEN);
1452 add_to_client_hash(target_p->name, target_p);
1453
1454 if(changed)
1455 {
1456 monitor_signon(target_p);
1457 del_all_accepts(target_p);
1458 }
1459 }
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