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Fix some part of IPv6 dline checking.
[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 "s_user.h"
29 #include "channel.h"
30 #include "class.h"
31 #include "client.h"
32 #include "common.h"
33 #include "hash.h"
34 #include "match.h"
35 #include "ircd.h"
36 #include "listener.h"
37 #include "msg.h"
38 #include "numeric.h"
39 #include "s_conf.h"
40 #include "s_newconf.h"
41 #include "logger.h"
42 #include "s_serv.h"
43 #include "s_stats.h"
44 #include "scache.h"
45 #include "send.h"
46 #include "supported.h"
47 #include "whowas.h"
48 #include "packet.h"
49 #include "reject.h"
50 #include "cache.h"
51 #include "hook.h"
52 #include "monitor.h"
53 #include "snomask.h"
54 #include "blacklist.h"
55 #include "substitution.h"
56 #include "chmode.h"
57
58 static void report_and_set_user_flags(struct Client *, struct ConfItem *);
59 void user_welcome(struct Client *source_p);
60
61 char umodebuf[128];
62
63 static int orphaned_umodes = 0;
64 int user_modes[256] = {
65 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
66 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
67 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
68 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
69 0, /* @ */
70 0, /* A */
71 0, /* B */
72 0, /* C */
73 UMODE_DEAF, /* D */
74 0, /* E */
75 0, /* F */
76 0, /* G */
77 0, /* H */
78 0, /* I */
79 0, /* J */
80 0, /* K */
81 0, /* L */
82 0, /* M */
83 0, /* N */
84 0, /* O */
85 0, /* P */
86 UMODE_NOFORWARD, /* Q */
87 UMODE_REGONLYMSG, /* R */
88 UMODE_SERVICE, /* S */
89 0, /* T */
90 0, /* U */
91 0, /* V */
92 0, /* W */
93 0, /* X */
94 0, /* Y */
95 UMODE_SSLCLIENT, /* Z */
96 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
97 UMODE_ADMIN, /* a */
98 0, /* b */
99 0, /* c */
100 0, /* d */
101 0, /* e */
102 0, /* f */
103 UMODE_CALLERID, /* g */
104 0, /* h */
105 UMODE_INVISIBLE, /* i */
106 0, /* j */
107 0, /* k */
108 UMODE_LOCOPS, /* l */
109 0, /* m */
110 0, /* n */
111 UMODE_OPER, /* o */
112 0, /* p */
113 0, /* q */
114 0, /* r */
115 UMODE_SERVNOTICE, /* s */
116 0, /* t */
117 0, /* u */
118 0, /* v */
119 UMODE_WALLOP, /* w */
120 0, /* x */
121 0, /* y */
122 UMODE_OPERWALL, /* z */
123 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
124 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
125 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
126 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
127 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
128 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
129 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
130 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
131 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
132 };
133 /* *INDENT-ON* */
134
135 /*
136 * show_lusers -
137 *
138 * inputs - pointer to client
139 * output -
140 * side effects - display to client user counts etc.
141 */
142 int
143 show_lusers(struct Client *source_p)
144 {
145 if(rb_dlink_list_length(&lclient_list) > (unsigned long)MaxClientCount)
146 MaxClientCount = rb_dlink_list_length(&lclient_list);
147
148 if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) >
149 (unsigned long)MaxConnectionCount)
150 MaxConnectionCount = rb_dlink_list_length(&lclient_list) +
151 rb_dlink_list_length(&serv_list);
152
153 sendto_one_numeric(source_p, RPL_LUSERCLIENT, form_str(RPL_LUSERCLIENT),
154 (Count.total - Count.invisi),
155 Count.invisi, rb_dlink_list_length(&global_serv_list));
156
157 if(rb_dlink_list_length(&oper_list) > 0)
158 sendto_one_numeric(source_p, RPL_LUSEROP,
159 form_str(RPL_LUSEROP), rb_dlink_list_length(&oper_list));
160
161 if(rb_dlink_list_length(&unknown_list) > 0)
162 sendto_one_numeric(source_p, RPL_LUSERUNKNOWN,
163 form_str(RPL_LUSERUNKNOWN),
164 rb_dlink_list_length(&unknown_list));
165
166 if(rb_dlink_list_length(&global_channel_list) > 0)
167 sendto_one_numeric(source_p, RPL_LUSERCHANNELS,
168 form_str(RPL_LUSERCHANNELS),
169 rb_dlink_list_length(&global_channel_list));
170
171 sendto_one_numeric(source_p, RPL_LUSERME, form_str(RPL_LUSERME),
172 rb_dlink_list_length(&lclient_list),
173 rb_dlink_list_length(&serv_list));
174
175 sendto_one_numeric(source_p, RPL_LOCALUSERS,
176 form_str(RPL_LOCALUSERS),
177 rb_dlink_list_length(&lclient_list),
178 Count.max_loc,
179 rb_dlink_list_length(&lclient_list),
180 Count.max_loc);
181
182 sendto_one_numeric(source_p, RPL_GLOBALUSERS, form_str(RPL_GLOBALUSERS),
183 Count.total, Count.max_tot,
184 Count.total, Count.max_tot);
185
186 sendto_one_numeric(source_p, RPL_STATSCONN,
187 form_str(RPL_STATSCONN),
188 MaxConnectionCount, MaxClientCount,
189 Count.totalrestartcount);
190
191 return 0;
192 }
193
194 /*
195 ** register_local_user
196 ** This function is called when both NICK and USER messages
197 ** have been accepted for the client, in whatever order. Only
198 ** after this, is the USER message propagated.
199 **
200 ** NICK's must be propagated at once when received, although
201 ** it would be better to delay them too until full info is
202 ** available. Doing it is not so simple though, would have
203 ** to implement the following:
204 **
205 ** (actually it has been implemented already for a while) -orabidoo
206 **
207 ** 1) user telnets in and gives only "NICK foobar" and waits
208 ** 2) another user far away logs in normally with the nick
209 ** "foobar" (quite legal, as this server didn't propagate
210 ** it).
211 ** 3) now this server gets nick "foobar" from outside, but
212 ** has alread the same defined locally. Current server
213 ** would just issue "KILL foobar" to clean out dups. But,
214 ** this is not fair. It should actually request another
215 ** nick from local user or kill him/her...
216 */
217
218 int
219 register_local_user(struct Client *client_p, struct Client *source_p, const char *username)
220 {
221 struct ConfItem *aconf, *xconf;
222 struct User *user = source_p->user;
223 char tmpstr2[IRCD_BUFSIZE];
224 char ipaddr[HOSTIPLEN];
225 char myusername[USERLEN+1];
226 int status;
227
228 s_assert(NULL != source_p);
229 s_assert(MyConnect(source_p));
230 s_assert(source_p->username != username);
231
232 if(source_p == NULL)
233 return -1;
234
235 if(IsAnyDead(source_p))
236 return -1;
237
238 if(ConfigFileEntry.ping_cookie)
239 {
240 if(!(source_p->flags & FLAGS_PINGSENT) && source_p->localClient->random_ping == 0)
241 {
242 source_p->localClient->random_ping = (unsigned long) (rand() * rand()) << 1;
243 sendto_one(source_p, "PING :%08lX",
244 (unsigned long) source_p->localClient->random_ping);
245 source_p->flags |= FLAGS_PINGSENT;
246 return -1;
247 }
248 if(!(source_p->flags & FLAGS_PING_COOKIE))
249 {
250 return -1;
251 }
252 }
253
254 /* hasnt finished client cap negotiation */
255 if(source_p->flags & FLAGS_CLICAP)
256 return -1;
257
258 /* still has DNSbls to validate against */
259 if(rb_dlink_list_length(&source_p->preClient->dnsbl_queries) > 0)
260 return -1;
261
262 client_p->localClient->last = rb_current_time();
263 /* Straight up the maximum rate of flooding... */
264 source_p->localClient->allow_read = MAX_FLOOD_BURST;
265
266 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
267 if(!IsGotId(source_p) && (strchr(username, '[') != NULL))
268 {
269 const char *p;
270 int i = 0;
271
272 p = username;
273
274 while(*p && i < USERLEN)
275 {
276 if(*p != '[')
277 myusername[i++] = *p;
278 p++;
279 }
280
281 myusername[i] = '\0';
282 username = myusername;
283 }
284
285 if((status = check_client(client_p, source_p, username)) < 0)
286 return (CLIENT_EXITED);
287
288 /* Apply nick override */
289 if(*source_p->preClient->spoofnick)
290 {
291 char note[NICKLEN + 10];
292
293 del_from_client_hash(source_p->name, source_p);
294 rb_strlcpy(source_p->name, source_p->preClient->spoofnick, NICKLEN + 1);
295 add_to_client_hash(source_p->name, source_p);
296
297 rb_snprintf(note, NICKLEN + 10, "Nick: %s", source_p->name);
298 rb_note(source_p->localClient->F, note);
299 }
300
301 if(!valid_hostname(source_p->host))
302 {
303 sendto_one_notice(source_p, ":*** Notice -- You have an illegal character in your hostname");
304
305 rb_strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
306 }
307
308
309 aconf = source_p->localClient->att_conf;
310
311 if(aconf == NULL)
312 {
313 exit_client(client_p, source_p, &me, "*** Not Authorised");
314 return (CLIENT_EXITED);
315 }
316
317 if(!IsGotId(source_p))
318 {
319 const char *p;
320 int i = 0;
321
322 if(IsNeedIdentd(aconf))
323 {
324 ServerStats.is_ref++;
325 sendto_one_notice(source_p, ":*** Notice -- You need to install identd to use this server");
326 exit_client(client_p, source_p, &me, "Install identd");
327 return (CLIENT_EXITED);
328 }
329
330 /* dont replace username if its supposed to be spoofed --fl */
331 if(!IsConfDoSpoofIp(aconf) || !strchr(aconf->name, '@'))
332 {
333 p = username;
334
335 if(!IsNoTilde(aconf))
336 source_p->username[i++] = '~';
337
338 while (*p && i < USERLEN)
339 {
340 if(*p != '[')
341 source_p->username[i++] = *p;
342 p++;
343 }
344
345 source_p->username[i] = '\0';
346 }
347 }
348
349 if(IsNeedSasl(aconf) && !*user->suser)
350 {
351 ServerStats.is_ref++;
352 sendto_one_notice(source_p, ":*** Notice -- You need to identify via SASL to use this server");
353 exit_client(client_p, source_p, &me, "SASL access only");
354 return (CLIENT_EXITED);
355 }
356
357 /* password check */
358 if(!EmptyString(aconf->passwd))
359 {
360 const char *encr;
361
362 if(EmptyString(source_p->localClient->passwd))
363 encr = "";
364 else if(IsConfEncrypted(aconf))
365 encr = rb_crypt(source_p->localClient->passwd, aconf->passwd);
366 else
367 encr = source_p->localClient->passwd;
368
369 if(strcmp(encr, aconf->passwd))
370 {
371 ServerStats.is_ref++;
372 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
373 exit_client(client_p, source_p, &me, "Bad Password");
374 return (CLIENT_EXITED);
375 }
376
377 /* clear password only if used now, otherwise send it
378 * to services -- jilles */
379 if(source_p->localClient->passwd)
380 {
381 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
382 rb_free(source_p->localClient->passwd);
383 source_p->localClient->passwd = NULL;
384 }
385 }
386
387 /* report if user has &^>= etc. and set flags as needed in source_p */
388 report_and_set_user_flags(source_p, aconf);
389
390 /* Limit clients */
391 /*
392 * We want to be able to have servers and F-line clients
393 * connect, so save room for "buffer" connections.
394 * Smaller servers may want to decrease this, and it should
395 * probably be just a percentage of the MAXCLIENTS...
396 * -Taner
397 */
398 /* Except "F:" clients */
399 if(rb_dlink_list_length(&lclient_list) >=
400 (unsigned long)GlobalSetOptions.maxclients && !IsConfExemptLimits(aconf))
401 {
402 sendto_realops_snomask(SNO_FULL, L_ALL,
403 "Too many clients, rejecting %s[%s].", source_p->name, source_p->host);
404
405 ServerStats.is_ref++;
406 exit_client(client_p, source_p, &me, "Sorry, server is full - try later");
407 return (CLIENT_EXITED);
408 }
409
410 /* kline exemption extends to xline too */
411 if(!IsExemptKline(source_p) &&
412 (xconf = find_xline(source_p->info, 1)) != NULL)
413 {
414 ServerStats.is_ref++;
415 add_reject(source_p, xconf->name, NULL);
416 exit_client(client_p, source_p, &me, "Bad user info");
417 return CLIENT_EXITED;
418 }
419
420 /* dnsbl check */
421 if (source_p->preClient->dnsbl_listed != NULL)
422 {
423 if (IsExemptKline(source_p) || IsConfExemptDNSBL(aconf))
424 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s, but you are exempt",
425 source_p->sockhost, source_p->preClient->dnsbl_listed->host);
426 else
427 {
428 rb_dlink_list varlist = { NULL, NULL, 0 };
429
430 substitution_append_var(&varlist, "nick", source_p->name);
431 substitution_append_var(&varlist, "ip", source_p->sockhost);
432 substitution_append_var(&varlist, "host", source_p->host);
433 substitution_append_var(&varlist, "dnsbl-host", source_p->preClient->dnsbl_listed->host);
434 substitution_append_var(&varlist, "network-name", ServerInfo.network_name);
435
436 ServerStats.is_ref++;
437
438 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
439 me.name, source_p->name,
440 substitution_parse(source_p->preClient->dnsbl_listed->reject_reason, &varlist));
441
442 substitution_free(&varlist);
443
444 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s",
445 source_p->sockhost, source_p->preClient->dnsbl_listed->host);
446 source_p->preClient->dnsbl_listed->hits++;
447 add_reject(source_p, NULL, NULL);
448 exit_client(client_p, source_p, &me, "*** Banned (DNS blacklist)");
449 return CLIENT_EXITED;
450 }
451 }
452
453 /* valid user name check */
454
455 if(!valid_username(source_p->username))
456 {
457 sendto_realops_snomask(SNO_REJ, L_ALL,
458 "Invalid username: %s (%s@%s)",
459 source_p->name, source_p->username, source_p->host);
460 ServerStats.is_ref++;
461 sendto_one_notice(source_p, ":*** Your username is invalid. Please make sure that your username contains "
462 "only alphanumeric characters.");
463 rb_sprintf(tmpstr2, "Invalid username [%s]", source_p->username);
464 exit_client(client_p, source_p, &me, tmpstr2);
465 return (CLIENT_EXITED);
466 }
467
468 /* end of valid user name check */
469
470 /* Store original hostname -- jilles */
471 rb_strlcpy(source_p->orighost, source_p->host, HOSTLEN + 1);
472
473 /* Spoof user@host */
474 if(*source_p->preClient->spoofuser)
475 rb_strlcpy(source_p->username, source_p->preClient->spoofuser, USERLEN + 1);
476 if(*source_p->preClient->spoofhost)
477 {
478 rb_strlcpy(source_p->host, source_p->preClient->spoofhost, HOSTLEN + 1);
479 if (irccmp(source_p->host, source_p->orighost))
480 SetDynSpoof(source_p);
481 }
482
483 source_p->umodes |= ConfigFileEntry.default_umodes & ~ConfigFileEntry.oper_only_umodes & ~orphaned_umodes;
484
485 call_hook(h_new_local_user, source_p);
486
487 /* If they have died in send_* or were thrown out by the
488 * new_local_user hook don't do anything. */
489 if(IsAnyDead(source_p))
490 return CLIENT_EXITED;
491
492 /* To avoid inconsistencies, do not abort the registration
493 * starting from this point -- jilles
494 */
495 rb_inet_ntop_sock((struct sockaddr *)&source_p->localClient->ip, ipaddr, sizeof(ipaddr));
496
497 sendto_realops_snomask(SNO_CCONN, L_ALL,
498 "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
499 source_p->name, source_p->username, source_p->orighost,
500 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
501 get_client_class(source_p), source_p->info);
502
503 sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
504 "CLICONN %s %s %s %s %s %s 0 %s",
505 source_p->name, source_p->username, source_p->orighost,
506 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
507 get_client_class(source_p),
508 /* mirc can sometimes send ips here */
509 show_ip(NULL, source_p) ? source_p->localClient->fullcaps : "<hidden> <hidden>",
510 source_p->info);
511
512 add_to_hostname_hash(source_p->orighost, source_p);
513
514 /* Allocate a UID if it was not previously allocated.
515 * If this already occured, it was probably during SASL auth...
516 */
517 if(!*source_p->id)
518 {
519 strcpy(source_p->id, generate_uid());
520 add_to_id_hash(source_p->id, source_p);
521 }
522
523 if (IsSSL(source_p))
524 source_p->umodes |= UMODE_SSLCLIENT;
525
526 if (source_p->umodes & UMODE_INVISIBLE)
527 Count.invisi++;
528
529 s_assert(!IsClient(source_p));
530 del_unknown_ip(source_p);
531 rb_dlinkMoveNode(&source_p->localClient->tnode, &unknown_list, &lclient_list);
532 SetClient(source_p);
533
534 source_p->servptr = &me;
535 rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
536
537 /* Increment our total user count here */
538 if(++Count.total > Count.max_tot)
539 Count.max_tot = Count.total;
540
541 source_p->localClient->allow_read = MAX_FLOOD_BURST;
542
543 Count.totalrestartcount++;
544
545 s_assert(source_p->localClient != NULL);
546
547 if(rb_dlink_list_length(&lclient_list) > (unsigned long)Count.max_loc)
548 {
549 Count.max_loc = rb_dlink_list_length(&lclient_list);
550 if(!(Count.max_loc % 10))
551 sendto_realops_snomask(SNO_GENERAL, L_ALL,
552 "New Max Local Clients: %d", Count.max_loc);
553 }
554
555 /* they get a reduced limit */
556 if(find_tgchange(source_p->sockhost))
557 USED_TARGETS(source_p) = 6;
558
559 monitor_signon(source_p);
560 user_welcome(source_p);
561
562 free_pre_client(source_p);
563
564 return (introduce_client(client_p, source_p, user, source_p->name, 1));
565 }
566
567 /*
568 * introduce_clients
569 *
570 * inputs -
571 * output -
572 * side effects - This common function introduces a client to the rest
573 * of the net, either from a local client connect or
574 * from a remote connect.
575 */
576 int
577 introduce_client(struct Client *client_p, struct Client *source_p, struct User *user, const char *nick, int use_euid)
578 {
579 static char ubuf[12];
580 struct Client *identifyservice_p;
581 char *p;
582 hook_data_umode_changed hdata;
583 hook_data_client hdata2;
584 char sockhost[HOSTLEN];
585
586 if(MyClient(source_p))
587 send_umode(source_p, source_p, 0, 0, ubuf);
588 else
589 send_umode(NULL, source_p, 0, 0, ubuf);
590
591 if(!*ubuf)
592 {
593 ubuf[0] = '+';
594 ubuf[1] = '\0';
595 }
596
597 s_assert(has_id(source_p));
598
599 if(source_p->sockhost[0] == ':')
600 {
601 sockhost[0] = '0';
602 sockhost[1] = '\0';
603 rb_strlcat(sockhost, source_p->sockhost, sizeof(sockhost));
604 } else
605 strcpy(sockhost, source_p->sockhost);
606
607 if (use_euid)
608 sendto_server(client_p, NULL, CAP_EUID | CAP_TS6, NOCAPS,
609 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
610 source_p->servptr->id, nick,
611 source_p->hopcount + 1,
612 (long) source_p->tsinfo, ubuf,
613 source_p->username, source_p->host,
614 IsIPSpoof(source_p) ? "0" : sockhost,
615 source_p->id,
616 IsDynSpoof(source_p) ? source_p->orighost : "*",
617 EmptyString(source_p->user->suser) ? "*" : source_p->user->suser,
618 source_p->info);
619
620 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS,
621 ":%s UID %s %d %ld %s %s %s %s %s :%s",
622 source_p->servptr->id, nick,
623 source_p->hopcount + 1,
624 (long) source_p->tsinfo, ubuf,
625 source_p->username, source_p->host,
626 IsIPSpoof(source_p) ? "0" : sockhost,
627 source_p->id, source_p->info);
628
629 if (IsDynSpoof(source_p))
630 {
631 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * REALHOST %s",
632 use_id(source_p), source_p->orighost);
633 }
634
635 if (!EmptyString(source_p->user->suser))
636 {
637 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * LOGIN %s",
638 use_id(source_p), source_p->user->suser);
639 }
640
641 if(MyConnect(source_p) && source_p->localClient->passwd)
642 {
643 if (ConfigFileEntry.identifyservice[0] != '\0' &&
644 ConfigFileEntry.identifycommand[0] != '\0')
645 {
646 /* use user@server */
647 p = strchr(ConfigFileEntry.identifyservice, '@');
648 if (p != NULL)
649 identifyservice_p = find_named_client(p + 1);
650 else
651 identifyservice_p = NULL;
652 if (identifyservice_p != NULL)
653 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s",
654 get_id(source_p, identifyservice_p),
655 ConfigFileEntry.identifyservice,
656 ConfigFileEntry.identifycommand,
657 source_p->localClient->passwd);
658 }
659 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
660 rb_free(source_p->localClient->passwd);
661 source_p->localClient->passwd = NULL;
662 }
663
664 /* let modules providing usermodes know that we've got a new user,
665 * why is this here? -- well, some modules need to be able to send out new
666 * information about a client, so this was the best place to do it
667 * --nenolod
668 */
669 hdata.client = source_p;
670 hdata.oldumodes = 0;
671 hdata.oldsnomask = 0;
672 call_hook(h_umode_changed, &hdata);
673
674 /* On the other hand, some modules need to know when a client is
675 * being introduced, period.
676 * --gxti
677 */
678 hdata2.client = client_p;
679 hdata2.target = source_p;
680 call_hook(h_introduce_client, &hdata2);
681
682 return 0;
683 }
684
685 /*
686 * valid_hostname - check hostname for validity
687 *
688 * Inputs - pointer to user
689 * Output - YES if valid, NO if not
690 * Side effects - NONE
691 *
692 * NOTE: this doesn't allow a hostname to begin with a dot and
693 * will not allow more dots than chars.
694 */
695 int
696 valid_hostname(const char *hostname)
697 {
698 const char *p = hostname;
699 int found_sep = 0;
700
701 s_assert(NULL != p);
702
703 if(hostname == NULL)
704 return NO;
705
706 if('.' == *p || ':' == *p)
707 return NO;
708
709 while (*p)
710 {
711 if(!IsHostChar(*p))
712 return NO;
713 if(*p == '.' || *p == ':')
714 found_sep++;
715 p++;
716 }
717
718 if(found_sep == 0)
719 return(NO);
720
721 return (YES);
722 }
723
724 /*
725 * valid_username - check username for validity
726 *
727 * Inputs - pointer to user
728 * Output - YES if valid, NO if not
729 * Side effects - NONE
730 *
731 * Absolutely always reject any '*' '!' '?' '@' in an user name
732 * reject any odd control characters names.
733 * Allow '.' in username to allow for "first.last"
734 * style of username
735 */
736 int
737 valid_username(const char *username)
738 {
739 int dots = 0;
740 const char *p = username;
741
742 s_assert(NULL != p);
743
744 if(username == NULL)
745 return NO;
746
747 if('~' == *p)
748 ++p;
749
750 /* reject usernames that don't start with an alphanum
751 * i.e. reject jokers who have '-@somehost' or '.@somehost'
752 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
753 */
754 if(!IsAlNum(*p))
755 return NO;
756
757 while (*++p)
758 {
759 if((*p == '.') && ConfigFileEntry.dots_in_ident)
760 {
761 dots++;
762 if(dots > ConfigFileEntry.dots_in_ident)
763 return NO;
764 if(!IsUserChar(p[1]))
765 return NO;
766 }
767 else if(!IsUserChar(*p))
768 return NO;
769 }
770 return YES;
771 }
772
773 /* report_and_set_user_flags
774 *
775 * Inputs - pointer to source_p
776 * - pointer to aconf for this user
777 * Output - NONE
778 * Side effects -
779 * Report to user any special flags they are getting, and set them.
780 */
781
782 static void
783 report_and_set_user_flags(struct Client *source_p, struct ConfItem *aconf)
784 {
785 /* If this user is being spoofed, tell them so */
786 if(IsConfDoSpoofIp(aconf))
787 {
788 sendto_one_notice(source_p, ":*** Spoofing your IP. congrats.");
789 }
790
791 /* If this user is in the exception class, Set it "E lined" */
792 if(IsConfExemptKline(aconf))
793 {
794 SetExemptKline(source_p);
795 sendto_one_notice(source_p, ":*** You are exempt from K/X lines. congrats.");
796 }
797
798 if(IsConfExemptDNSBL(aconf))
799 /* kline exempt implies this, don't send both */
800 if(!IsConfExemptKline(aconf))
801 sendto_one_notice(source_p, ":*** You are exempt from DNS blacklists.");
802
803 /* If this user is exempt from user limits set it F lined" */
804 if(IsConfExemptLimits(aconf))
805 {
806 sendto_one_notice(source_p, ":*** You are exempt from user limits. congrats.");
807 }
808
809 if(IsConfExemptFlood(aconf))
810 {
811 SetExemptFlood(source_p);
812 sendto_one_notice(source_p, ":*** You are exempt from flood limits.");
813 }
814
815 if(IsConfExemptSpambot(aconf))
816 {
817 SetExemptSpambot(source_p);
818 sendto_one_notice(source_p, ":*** You are exempt from spambot checks.");
819 }
820
821 if(IsConfExemptJupe(aconf))
822 {
823 SetExemptJupe(source_p);
824 sendto_one_notice(source_p, ":*** You are exempt from juped channel warnings.");
825 }
826
827 if(IsConfExemptResv(aconf))
828 {
829 SetExemptResv(source_p);
830 sendto_one_notice(source_p, ":*** You are exempt from resvs.");
831 }
832
833 if(IsConfExemptShide(aconf))
834 {
835 SetExemptShide(source_p);
836 sendto_one_notice(source_p, ":*** You are exempt from serverhiding.");
837 }
838 }
839
840 /*
841 * user_mode - set get current users mode
842 *
843 * m_umode() added 15/10/91 By Darren Reed.
844 * parv[0] - sender
845 * parv[1] - username to change mode for
846 * parv[2] - modes to change
847 */
848 int
849 user_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
850 {
851 int flag;
852 int i;
853 char *m;
854 const char *pm;
855 struct Client *target_p;
856 int what, setflags;
857 int badflag = NO; /* Only send one bad flag notice */
858 int showsnomask = NO;
859 unsigned int setsnomask;
860 char buf[BUFSIZE];
861 hook_data_umode_changed hdata;
862
863 what = MODE_ADD;
864
865 if(parc < 2)
866 {
867 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "MODE");
868 return 0;
869 }
870
871 if((target_p = MyClient(source_p) ? find_named_person(parv[1]) : find_person(parv[1])) == NULL)
872 {
873 if(MyConnect(source_p))
874 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
875 form_str(ERR_NOSUCHCHANNEL), parv[1]);
876 return 0;
877 }
878
879 /* Dont know why these were commented out..
880 * put them back using new sendto() funcs
881 */
882
883 if(IsServer(source_p))
884 {
885 sendto_realops_snomask(SNO_GENERAL, L_ADMIN,
886 "*** Mode for User %s from %s", parv[1], source_p->name);
887 return 0;
888 }
889
890 if(source_p != target_p || target_p->from != source_p->from)
891 {
892 sendto_one(source_p, form_str(ERR_USERSDONTMATCH), me.name, source_p->name);
893 return 0;
894 }
895
896 if(parc < 3)
897 {
898 m = buf;
899 *m++ = '+';
900
901 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
902 if (source_p->umodes & user_modes[i])
903 *m++ = (char) i;
904
905 *m = '\0';
906 sendto_one_numeric(source_p, RPL_UMODEIS, form_str(RPL_UMODEIS), buf);
907
908 if (source_p->snomask != 0)
909 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
910 construct_snobuf(source_p->snomask));
911
912 return 0;
913 }
914
915 /* find flags already set for user */
916 setflags = source_p->umodes;
917 setsnomask = source_p->snomask;
918
919 /*
920 * parse mode change string(s)
921 */
922 for (pm = parv[2]; *pm; pm++)
923 switch (*pm)
924 {
925 case '+':
926 what = MODE_ADD;
927 break;
928 case '-':
929 what = MODE_DEL;
930 break;
931
932 case 'o':
933 if(what == MODE_ADD)
934 {
935 if(IsServer(client_p) && !IsOper(source_p))
936 {
937 ++Count.oper;
938 SetOper(source_p);
939 rb_dlinkAddAlloc(source_p, &oper_list);
940 }
941 }
942 else
943 {
944 /* Only decrement the oper counts if an oper to begin with
945 * found by Pat Szuta, Perly , perly@xnet.com
946 */
947
948 if(!IsOper(source_p))
949 break;
950
951 ClearOper(source_p);
952
953 Count.oper--;
954
955 if(MyConnect(source_p))
956 {
957 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
958 if (!(source_p->umodes & UMODE_SERVNOTICE) && source_p->snomask != 0)
959 {
960 source_p->snomask = 0;
961 showsnomask = YES;
962 }
963 source_p->flags2 &= ~OPER_FLAGS;
964
965 rb_free(source_p->localClient->opername);
966 source_p->localClient->opername = NULL;
967
968 rb_dlinkFindDestroy(source_p, &local_oper_list);
969 }
970
971 rb_dlinkFindDestroy(source_p, &oper_list);
972 }
973 break;
974
975 /* we may not get these,
976 * but they shouldnt be in default
977 */
978
979 /* can only be set on burst */
980 case 'S':
981 case 'Z':
982 case ' ':
983 case '\n':
984 case '\r':
985 case '\t':
986 break;
987
988 case 's':
989 if (MyConnect(source_p))
990 {
991 if(!IsOper(source_p)
992 && (ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE))
993 {
994 if (what == MODE_ADD || source_p->umodes & UMODE_SERVNOTICE)
995 badflag = YES;
996 continue;
997 }
998 showsnomask = YES;
999 if(what == MODE_ADD)
1000 {
1001 if (parc > 3)
1002 source_p->snomask = parse_snobuf_to_mask(source_p->snomask, parv[3]);
1003 else
1004 source_p->snomask |= SNO_GENERAL;
1005 }
1006 else
1007 source_p->snomask = 0;
1008 if (source_p->snomask != 0)
1009 source_p->umodes |= UMODE_SERVNOTICE;
1010 else
1011 source_p->umodes &= ~UMODE_SERVNOTICE;
1012 break;
1013 }
1014 /* FALLTHROUGH */
1015 default:
1016 if (MyConnect(source_p) && *pm == 'Q' && !ConfigChannel.use_forward) {
1017 badflag = YES;
1018 break;
1019 }
1020
1021 if((flag = user_modes[(unsigned char) *pm]))
1022 {
1023 if(MyConnect(source_p)
1024 && ((!IsOper(source_p)
1025 && (ConfigFileEntry.oper_only_umodes & flag))
1026 || (orphaned_umodes & flag)))
1027 {
1028 if (what == MODE_ADD || source_p->umodes & flag)
1029 badflag = YES;
1030 }
1031 else
1032 {
1033 if(what == MODE_ADD)
1034 source_p->umodes |= flag;
1035 else
1036 source_p->umodes &= ~flag;
1037 }
1038 }
1039 else
1040 {
1041 if(MyConnect(source_p))
1042 badflag = YES;
1043 }
1044 break;
1045 }
1046
1047 if(badflag)
1048 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG), me.name, source_p->name);
1049
1050 if(MyClient(source_p) && (source_p->snomask & SNO_NCHANGE) && !IsOperN(source_p))
1051 {
1052 sendto_one_notice(source_p, ":*** You need oper and nick_changes flag for +s +n");
1053 source_p->snomask &= ~SNO_NCHANGE; /* only tcm's really need this */
1054 }
1055
1056 if(MyClient(source_p) && (source_p->umodes & UMODE_OPERWALL) && !IsOperOperwall(source_p))
1057 {
1058 sendto_one_notice(source_p, ":*** You need oper and operwall flag for +z");
1059 source_p->umodes &= ~UMODE_OPERWALL;
1060 }
1061
1062 if(MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1063 (!IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p)))
1064 {
1065 sendto_one_notice(source_p, ":*** You need oper and admin flag for +a");
1066 source_p->umodes &= ~UMODE_ADMIN;
1067 }
1068
1069 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1070 hdata.client = source_p;
1071 hdata.oldumodes = setflags;
1072 hdata.oldsnomask = setsnomask;
1073 call_hook(h_umode_changed, &hdata);
1074
1075 if(!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1076 ++Count.invisi;
1077 if((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1078 --Count.invisi;
1079 /*
1080 * compare new flags with old flags and send string which
1081 * will cause servers to update correctly.
1082 */
1083 send_umode_out(client_p, source_p, setflags);
1084 if (showsnomask && MyConnect(source_p))
1085 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1086 construct_snobuf(source_p->snomask));
1087
1088 return (0);
1089 }
1090
1091 /*
1092 * send the MODE string for user (user) to connection client_p
1093 * -avalon
1094 */
1095 void
1096 send_umode(struct Client *client_p, struct Client *source_p, int old, int sendmask, char *umode_buf)
1097 {
1098 int i;
1099 int flag;
1100 char *m;
1101 int what = 0;
1102
1103 /*
1104 * build a string in umode_buf to represent the change in the user's
1105 * mode between the new (source_p->flag) and 'old'.
1106 */
1107 m = umode_buf;
1108 *m = '\0';
1109
1110 for (i = 0; i < 128; i++)
1111 {
1112 flag = user_modes[i];
1113
1114 if((flag & old) && !(source_p->umodes & flag))
1115 {
1116 if(what == MODE_DEL)
1117 *m++ = (char) i;
1118 else
1119 {
1120 what = MODE_DEL;
1121 *m++ = '-';
1122 *m++ = (char) i;
1123 }
1124 }
1125 else if(!(flag & old) && (source_p->umodes & flag))
1126 {
1127 if(what == MODE_ADD)
1128 *m++ = (char) i;
1129 else
1130 {
1131 what = MODE_ADD;
1132 *m++ = '+';
1133 *m++ = (char) i;
1134 }
1135 }
1136 }
1137 *m = '\0';
1138
1139 if(*umode_buf && client_p)
1140 sendto_one(client_p, ":%s MODE %s :%s", source_p->name, source_p->name, umode_buf);
1141 }
1142
1143 /*
1144 * send_umode_out
1145 *
1146 * inputs -
1147 * output - NONE
1148 * side effects -
1149 */
1150 void
1151 send_umode_out(struct Client *client_p, struct Client *source_p, int old)
1152 {
1153 struct Client *target_p;
1154 char buf[BUFSIZE];
1155 rb_dlink_node *ptr;
1156
1157 send_umode(NULL, source_p, old, 0, buf);
1158
1159 RB_DLINK_FOREACH(ptr, serv_list.head)
1160 {
1161 target_p = ptr->data;
1162
1163 if((target_p != client_p) && (target_p != source_p) && (*buf))
1164 {
1165 sendto_one(target_p, ":%s MODE %s :%s",
1166 get_id(source_p, target_p),
1167 get_id(source_p, target_p), buf);
1168 }
1169 }
1170
1171 if(client_p && MyClient(client_p))
1172 send_umode(client_p, source_p, old, 0, buf);
1173 }
1174
1175 /*
1176 * user_welcome
1177 *
1178 * inputs - client pointer to client to welcome
1179 * output - NONE
1180 * side effects -
1181 */
1182 void
1183 user_welcome(struct Client *source_p)
1184 {
1185 sendto_one_numeric(source_p, RPL_WELCOME, form_str(RPL_WELCOME), ServerInfo.network_name, source_p->name);
1186 sendto_one_numeric(source_p, RPL_YOURHOST, form_str(RPL_YOURHOST),
1187 get_listener_name(source_p->localClient->listener), ircd_version);
1188 sendto_one_numeric(source_p, RPL_CREATED, form_str(RPL_CREATED), creation);
1189 sendto_one_numeric(source_p, RPL_MYINFO, form_str(RPL_MYINFO), me.name, ircd_version, umodebuf, cflagsmyinfo);
1190
1191 show_isupport(source_p);
1192
1193 show_lusers(source_p);
1194
1195 if(ConfigFileEntry.short_motd)
1196 {
1197 sendto_one_notice(source_p, ":*** Notice -- motd was last changed at %s", user_motd_changed);
1198 sendto_one_notice(source_p, ":*** Notice -- Please read the motd if you haven't read it");
1199
1200 sendto_one(source_p, form_str(RPL_MOTDSTART),
1201 me.name, source_p->name, me.name);
1202
1203 sendto_one(source_p, form_str(RPL_MOTD),
1204 me.name, source_p->name, "*** This is the short motd ***");
1205
1206 sendto_one(source_p, form_str(RPL_ENDOFMOTD), me.name, source_p->name);
1207 }
1208 else
1209 send_user_motd(source_p);
1210 }
1211
1212 /* oper_up()
1213 *
1214 * inputs - pointer to given client to oper
1215 * - pointer to ConfItem to use
1216 * output - none
1217 * side effects - opers up source_p using aconf for reference
1218 */
1219 int
1220 oper_up(struct Client *source_p, struct oper_conf *oper_p)
1221 {
1222 unsigned int old = source_p->umodes, oldsnomask = source_p->snomask;
1223 hook_data_umode_changed hdata;
1224
1225 SetOper(source_p);
1226
1227 if(oper_p->umodes)
1228 source_p->umodes |= oper_p->umodes;
1229 else if(ConfigFileEntry.oper_umodes)
1230 source_p->umodes |= ConfigFileEntry.oper_umodes;
1231 else
1232 source_p->umodes |= DEFAULT_OPER_UMODES;
1233
1234 if (oper_p->snomask)
1235 {
1236 source_p->snomask |= oper_p->snomask;
1237 source_p->umodes |= UMODE_SERVNOTICE;
1238 }
1239 else if (source_p->umodes & UMODE_SERVNOTICE)
1240 {
1241 /* Only apply these if +s is already set -- jilles */
1242 if (ConfigFileEntry.oper_snomask)
1243 source_p->snomask |= ConfigFileEntry.oper_snomask;
1244 else
1245 source_p->snomask |= DEFAULT_OPER_SNOMASK;
1246 }
1247
1248 Count.oper++;
1249
1250 SetExemptKline(source_p);
1251
1252 source_p->flags2 |= oper_p->flags;
1253 source_p->localClient->opername = rb_strdup(oper_p->name);
1254
1255 rb_dlinkAddAlloc(source_p, &local_oper_list);
1256 rb_dlinkAddAlloc(source_p, &oper_list);
1257
1258 if(IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1259 source_p->umodes |= UMODE_ADMIN;
1260 if(!IsOperN(source_p))
1261 source_p->snomask &= ~SNO_NCHANGE;
1262 if(!IsOperOperwall(source_p))
1263 source_p->umodes &= ~UMODE_OPERWALL;
1264 hdata.client = source_p;
1265 hdata.oldumodes = old;
1266 hdata.oldsnomask = oldsnomask;
1267 call_hook(h_umode_changed, &hdata);
1268
1269 sendto_realops_snomask(SNO_GENERAL, L_ALL,
1270 "%s (%s@%s) is now an operator", source_p->name,
1271 source_p->username, source_p->host);
1272 if(!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1273 ++Count.invisi;
1274 if((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1275 --Count.invisi;
1276 send_umode_out(source_p, source_p, old);
1277 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1278 construct_snobuf(source_p->snomask));
1279 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1280 sendto_one_notice(source_p, ":*** Oper privs are %s", get_oper_privs(oper_p->flags));
1281 send_oper_motd(source_p);
1282
1283 return (1);
1284 }
1285
1286 /*
1287 * find_umode_slot
1288 *
1289 * inputs - NONE
1290 * outputs - an available umode bitmask or
1291 * 0 if no umodes are available
1292 * side effects - NONE
1293 */
1294 unsigned int
1295 find_umode_slot(void)
1296 {
1297 unsigned int all_umodes = 0, my_umode = 0, i;
1298
1299 for (i = 0; i < 128; i++)
1300 all_umodes |= user_modes[i];
1301
1302 for (my_umode = 1; my_umode && (all_umodes & my_umode);
1303 my_umode <<= 1);
1304
1305 return my_umode;
1306 }
1307
1308 void
1309 construct_umodebuf(void)
1310 {
1311 int i;
1312 char *ptr = umodebuf;
1313 static int prev_user_modes[128];
1314
1315 *ptr = '\0';
1316
1317 for (i = 0; i < 128; i++)
1318 {
1319 if (prev_user_modes[i] != 0 && prev_user_modes[i] != user_modes[i])
1320 {
1321 if (user_modes[i] == 0)
1322 {
1323 orphaned_umodes |= prev_user_modes[i];
1324 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Umode +%c is now orphaned", i);
1325 }
1326 else
1327 {
1328 orphaned_umodes &= ~prev_user_modes[i];
1329 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Orphaned umode +%c is picked up by module", i);
1330 }
1331 user_modes[i] = prev_user_modes[i];
1332 }
1333 else
1334 prev_user_modes[i] = user_modes[i];
1335 if (user_modes[i])
1336 *ptr++ = (char) i;
1337 }
1338
1339 *ptr++ = '\0';
1340 }
1341
1342 void
1343 change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
1344 const char *host, int newts, const char *format, ...)
1345 {
1346 rb_dlink_node *ptr;
1347 struct Channel *chptr;
1348 struct membership *mscptr;
1349 int changed = irccmp(target_p->name, nick);
1350 int changed_case = strcmp(target_p->name, nick);
1351 int do_qjm = irccmp(target_p->username, user) || irccmp(target_p->host, host);
1352 char mode[10], modeval[NICKLEN * 2 + 2], reason[256], *mptr;
1353 va_list ap;
1354
1355 modeval[0] = '\0';
1356
1357 if(changed)
1358 {
1359 target_p->tsinfo = newts;
1360 monitor_signoff(target_p);
1361 }
1362 invalidate_bancache_user(target_p);
1363
1364 if(do_qjm)
1365 {
1366 va_start(ap, format);
1367 vsnprintf(reason, 255, format, ap);
1368 va_end(ap);
1369
1370 sendto_common_channels_local_butone(target_p, ":%s!%s@%s QUIT :%s",
1371 target_p->name, target_p->username, target_p->host,
1372 reason);
1373
1374 RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
1375 {
1376 mscptr = ptr->data;
1377 chptr = mscptr->chptr;
1378 mptr = mode;
1379
1380 if(is_chanop(mscptr))
1381 {
1382 *mptr++ = 'o';
1383 strcat(modeval, nick);
1384 strcat(modeval, " ");
1385 }
1386
1387 if(is_voiced(mscptr))
1388 {
1389 *mptr++ = 'v';
1390 strcat(modeval, nick);
1391 }
1392
1393 *mptr = '\0';
1394
1395 sendto_channel_local_butone(target_p, ALL_MEMBERS, chptr, ":%s!%s@%s JOIN :%s",
1396 nick, user, host, chptr->chname);
1397 if(*mode)
1398 sendto_channel_local_butone(target_p, ALL_MEMBERS, chptr,
1399 ":%s MODE %s +%s %s",
1400 target_p->servptr->name,
1401 chptr->chname, mode, modeval);
1402
1403 *modeval = '\0';
1404 }
1405
1406 if(MyClient(target_p) && changed_case)
1407 sendto_one(target_p, ":%s!%s@%s NICK %s",
1408 target_p->name, target_p->username, target_p->host, nick);
1409 }
1410 else if(changed_case)
1411 {
1412 sendto_common_channels_local(target_p, ":%s!%s@%s NICK :%s",
1413 target_p->name, target_p->username,
1414 target_p->host, nick);
1415 }
1416
1417 rb_strlcpy(target_p->username, user, sizeof target_p->username);
1418 rb_strlcpy(target_p->host, host, sizeof target_p->host);
1419
1420 if (changed)
1421 add_history(target_p, 1);
1422
1423 del_from_client_hash(target_p->name, target_p);
1424 rb_strlcpy(target_p->name, nick, NICKLEN);
1425 add_to_client_hash(target_p->name, target_p);
1426
1427 if(changed)
1428 {
1429 monitor_signon(target_p);
1430 del_all_accepts(target_p);
1431 }
1432 }
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