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[solanum.git] / ircd / 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
25 #include "stdinc.h"
26 #include "s_user.h"
27 #include "channel.h"
28 #include "class.h"
29 #include "client.h"
30 #include "hash.h"
31 #include "match.h"
32 #include "ircd.h"
33 #include "listener.h"
34 #include "msg.h"
35 #include "numeric.h"
36 #include "s_conf.h"
37 #include "s_newconf.h"
38 #include "logger.h"
39 #include "s_serv.h"
40 #include "s_stats.h"
41 #include "scache.h"
42 #include "send.h"
43 #include "supported.h"
44 #include "whowas.h"
45 #include "packet.h"
46 #include "reject.h"
47 #include "cache.h"
48 #include "hook.h"
49 #include "monitor.h"
50 #include "snomask.h"
51 #include "substitution.h"
52 #include "chmode.h"
53 #include "s_assert.h"
54
55 static void report_and_set_user_flags(struct Client *, struct ConfItem *);
56 void user_welcome(struct Client *source_p);
57
58 char umodebuf[128];
59
60 static int orphaned_umodes = 0;
61 int user_modes[256] = {
62 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
63 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
64 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
65 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
66 0, /* @ */
67 0, /* A */
68 0, /* B */
69 0, /* C */
70 UMODE_DEAF, /* D */
71 0, /* E */
72 0, /* F */
73 0, /* G */
74 0, /* H */
75 0, /* I */
76 0, /* J */
77 0, /* K */
78 0, /* L */
79 0, /* M */
80 0, /* N */
81 0, /* O */
82 0, /* P */
83 UMODE_NOFORWARD, /* Q */
84 UMODE_REGONLYMSG, /* R */
85 UMODE_SERVICE, /* S */
86 0, /* T */
87 0, /* U */
88 0, /* V */
89 0, /* W */
90 0, /* X */
91 0, /* Y */
92 UMODE_SSLCLIENT, /* Z */
93 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
94 UMODE_ADMIN, /* a */
95 0, /* b */
96 0, /* c */
97 0, /* d */
98 0, /* e */
99 0, /* f */
100 UMODE_CALLERID, /* g */
101 0, /* h */
102 UMODE_INVISIBLE, /* i */
103 0, /* j */
104 0, /* k */
105 UMODE_LOCOPS, /* l */
106 0, /* m */
107 0, /* n */
108 UMODE_OPER, /* o */
109 0, /* p */
110 0, /* q */
111 0, /* r */
112 UMODE_SERVNOTICE, /* s */
113 0, /* t */
114 0, /* u */
115 0, /* v */
116 UMODE_WALLOP, /* w */
117 0, /* x */
118 0, /* y */
119 UMODE_OPERWALL, /* z */
120 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
121 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
122 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
123 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
124 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
125 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
126 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
127 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
128 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
129 };
130 /* *INDENT-ON* */
131
132 /*
133 * show_lusers -
134 *
135 * inputs - pointer to client
136 * output -
137 * side effects - display to client user counts etc.
138 */
139 void
140 show_lusers(struct Client *source_p)
141 {
142 if(rb_dlink_list_length(&lclient_list) > (unsigned long)MaxClientCount)
143 MaxClientCount = rb_dlink_list_length(&lclient_list);
144
145 if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) >
146 (unsigned long)MaxConnectionCount)
147 MaxConnectionCount = rb_dlink_list_length(&lclient_list) +
148 rb_dlink_list_length(&serv_list);
149
150 sendto_one_numeric(source_p, RPL_LUSERCLIENT, form_str(RPL_LUSERCLIENT),
151 (Count.total - Count.invisi),
152 Count.invisi,
153 (int)rb_dlink_list_length(&global_serv_list));
154
155 if(rb_dlink_list_length(&oper_list) > 0)
156 sendto_one_numeric(source_p, RPL_LUSEROP,
157 form_str(RPL_LUSEROP),
158 (int)rb_dlink_list_length(&oper_list));
159
160 if(rb_dlink_list_length(&unknown_list) > 0)
161 sendto_one_numeric(source_p, RPL_LUSERUNKNOWN,
162 form_str(RPL_LUSERUNKNOWN),
163 (int)rb_dlink_list_length(&unknown_list));
164
165 if(rb_dlink_list_length(&global_channel_list) > 0)
166 sendto_one_numeric(source_p, RPL_LUSERCHANNELS,
167 form_str(RPL_LUSERCHANNELS),
168 rb_dlink_list_length(&global_channel_list));
169
170 sendto_one_numeric(source_p, RPL_LUSERME, form_str(RPL_LUSERME),
171 (int)rb_dlink_list_length(&lclient_list),
172 (int)rb_dlink_list_length(&serv_list));
173
174 sendto_one_numeric(source_p, RPL_LOCALUSERS,
175 form_str(RPL_LOCALUSERS),
176 (int)rb_dlink_list_length(&lclient_list),
177 Count.max_loc,
178 (int)rb_dlink_list_length(&lclient_list),
179 Count.max_loc);
180
181 sendto_one_numeric(source_p, RPL_GLOBALUSERS, form_str(RPL_GLOBALUSERS),
182 Count.total, Count.max_tot,
183 Count.total, Count.max_tot);
184
185 sendto_one_numeric(source_p, RPL_STATSCONN,
186 form_str(RPL_STATSCONN),
187 MaxConnectionCount, MaxClientCount,
188 Count.totalrestartcount);
189 }
190
191 /* check if we should exit a client due to authd decision
192 * inputs - client server, client connecting
193 * outputs - true if exited, false if not
194 * side effects - messages/exits client if authd rejected and not exempt
195 */
196 static bool
197 authd_check(struct Client *client_p, struct Client *source_p)
198 {
199 struct ConfItem *aconf = source_p->localClient->att_conf;
200 rb_dlink_list varlist = { NULL, NULL, 0 };
201 bool reject = false;
202 char *reason;
203
204 if(source_p->preClient->auth.accepted == true)
205 return reject;
206
207 substitution_append_var(&varlist, "nick", source_p->name);
208 substitution_append_var(&varlist, "ip", source_p->sockhost);
209 substitution_append_var(&varlist, "host", source_p->host);
210 substitution_append_var(&varlist, "dnsbl-host", source_p->preClient->auth.data);
211 substitution_append_var(&varlist, "network-name", ServerInfo.network_name);
212 reason = substitution_parse(source_p->preClient->auth.reason, &varlist);
213
214 switch(source_p->preClient->auth.cause)
215 {
216 case 'B': /* Blacklists */
217 {
218 struct BlacklistStats *stats;
219 char *blacklist = source_p->preClient->auth.data;
220
221 if(bl_stats != NULL)
222 if((stats = rb_dictionary_retrieve(bl_stats, blacklist)) != NULL)
223 stats->hits++;
224
225 if(IsExemptKline(source_p) || IsConfExemptDNSBL(aconf))
226 {
227 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s, but you are exempt",
228 source_p->sockhost, blacklist);
229 break;
230 }
231
232 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
233 "Listed on DNSBL %s: %s (%s@%s) [%s] [%s]",
234 blacklist, source_p->name, source_p->username, source_p->host,
235 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
236 source_p->info);
237
238 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
239 me.name, source_p->name, reason);
240
241 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s",
242 source_p->sockhost, blacklist);
243 add_reject(source_p, NULL, NULL);
244 exit_client(client_p, source_p, &me, "Banned (DNS blacklist)");
245 reject = true;
246 }
247 break;
248 case 'O': /* OPM */
249 {
250 char *proxy = source_p->preClient->auth.data;
251 char *port = strrchr(proxy, ':');
252
253 if(port == NULL)
254 {
255 /* This shouldn't happen, better tell the ops... */
256 ierror("authd sent us a malformed OPM string %s", proxy);
257 sendto_realops_snomask(SNO_GENERAL, L_ALL,
258 "authd sent us a malformed OPM string %s", proxy);
259 break;
260 }
261
262 /* Terminate the proxy type */
263 *(port++) = '\0';
264
265 if(IsExemptKline(source_p) || IsConfExemptProxy(aconf))
266 {
267 sendto_one_notice(source_p,
268 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s), but you are exempt",
269 source_p->sockhost, proxy, port);
270 break;
271 }
272 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
273 "Open proxy %s/%s: %s (%s@%s) [%s] [%s]",
274 proxy, port,
275 source_p->name,
276 source_p->username, source_p->host,
277 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
278 source_p->info);
279
280 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
281 me.name, source_p->name, reason);
282
283 sendto_one_notice(source_p,
284 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s)",
285 source_p->sockhost, proxy, port);
286 add_reject(source_p, NULL, NULL);
287 exit_client(client_p, source_p, &me, "Banned (Open proxy)");
288 reject = true;
289 }
290 break;
291 default: /* Unknown, but handle the case properly */
292 if(IsExemptKline(source_p))
293 {
294 sendto_one_notice(source_p,
295 ":*** You were rejected, but you are exempt (reason: %s)",
296 reason);
297 break;
298 }
299 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
300 "Rejected by authentication system (reason %s): %s (%s@%s) [%s] [%s]",
301 reason, source_p->name, source_p->username, source_p->host,
302 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
303 source_p->info);
304
305 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
306 me.name, source_p->name, reason);
307
308 sendto_one_notice(source_p, ":*** Rejected by authentication system: %s",
309 reason);
310 add_reject(source_p, NULL, NULL);
311 exit_client(client_p, source_p, &me, "Banned (authentication system)");
312 reject = true;
313 break;
314 }
315
316 if(reject)
317 ServerStats.is_ref++;
318
319 substitution_free(&varlist);
320
321 return reject;
322 }
323
324 /*
325 ** register_local_user
326 ** This function is called when both NICK and USER messages
327 ** have been accepted for the client, in whatever order. Only
328 ** after this, is the USER message propagated.
329 **
330 ** NICK's must be propagated at once when received, although
331 ** it would be better to delay them too until full info is
332 ** available. Doing it is not so simple though, would have
333 ** to implement the following:
334 **
335 ** (actually it has been implemented already for a while) -orabidoo
336 **
337 ** 1) user telnets in and gives only "NICK foobar" and waits
338 ** 2) another user far away logs in normally with the nick
339 ** "foobar" (quite legal, as this server didn't propagate
340 ** it).
341 ** 3) now this server gets nick "foobar" from outside, but
342 ** has alread the same defined locally. Current server
343 ** would just issue "KILL foobar" to clean out dups. But,
344 ** this is not fair. It should actually request another
345 ** nick from local user or kill him/her...
346 */
347 int
348 register_local_user(struct Client *client_p, struct Client *source_p)
349 {
350 struct ConfItem *aconf, *xconf;
351 struct User *user = source_p->user;
352 char tmpstr2[BUFSIZE];
353 char ipaddr[HOSTIPLEN];
354 char myusername[USERLEN+1];
355 int status;
356
357 s_assert(NULL != source_p);
358 s_assert(MyConnect(source_p));
359
360 if(source_p == NULL)
361 return -1;
362
363 if(IsAnyDead(source_p))
364 return -1;
365
366 if(ConfigFileEntry.ping_cookie)
367 {
368 if(!(source_p->flags & FLAGS_PINGSENT) && source_p->localClient->random_ping == 0)
369 {
370 source_p->localClient->random_ping = (uint32_t)(((rand() * rand()) << 1) | 1);
371 sendto_one(source_p, "PING :%08X",
372 (unsigned int) source_p->localClient->random_ping);
373 source_p->flags |= FLAGS_PINGSENT;
374 return -1;
375 }
376 if(!(source_p->flags & FLAGS_PING_COOKIE))
377 {
378 return -1;
379 }
380 }
381
382 /* hasnt finished client cap negotiation */
383 if(source_p->flags & FLAGS_CLICAP)
384 return -1;
385
386 /* Waiting on authd */
387 if(source_p->preClient->auth.cid)
388 return -1;
389
390 client_p->localClient->last = rb_current_time();
391
392 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
393 if(!IsGotId(source_p) && (strchr(source_p->username, '[') != NULL))
394 {
395 const char *p;
396 int i = 0;
397
398 p = source_p->username;
399
400 while(*p && i < USERLEN)
401 {
402 if(*p != '[')
403 myusername[i++] = *p;
404 p++;
405 }
406
407 myusername[i] = '\0';
408 }
409 else
410 rb_strlcpy(myusername, source_p->username, sizeof myusername);
411
412 if((status = check_client(client_p, source_p, myusername)) < 0)
413 return (CLIENT_EXITED);
414
415 /* Apply nick override */
416 if(*source_p->preClient->spoofnick)
417 {
418 char note[NICKLEN + 10];
419
420 del_from_client_hash(source_p->name, source_p);
421 rb_strlcpy(source_p->name, source_p->preClient->spoofnick, NICKLEN + 1);
422 add_to_client_hash(source_p->name, source_p);
423
424 snprintf(note, NICKLEN + 10, "Nick: %s", source_p->name);
425 rb_note(source_p->localClient->F, note);
426 }
427
428 if(!valid_hostname(source_p->host))
429 {
430 sendto_one_notice(source_p, ":*** Notice -- You have an illegal character in your hostname");
431
432 rb_strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
433 }
434
435 aconf = source_p->localClient->att_conf;
436
437 if(aconf == NULL)
438 {
439 exit_client(client_p, source_p, &me, "*** Not Authorised");
440 return (CLIENT_EXITED);
441 }
442
443 if(IsConfSSLNeeded(aconf) && !IsSSL(source_p))
444 {
445 ServerStats.is_ref++;
446 sendto_one_notice(source_p, ":*** Notice -- You need to use SSL/TLS to use this server");
447 exit_client(client_p, source_p, &me, "Use SSL/TLS");
448 return (CLIENT_EXITED);
449 }
450
451 if(!IsGotId(source_p))
452 {
453 const char *p;
454 int i = 0;
455
456 if(IsNeedIdentd(aconf))
457 {
458 ServerStats.is_ref++;
459 sendto_one_notice(source_p, ":*** Notice -- You need to install identd to use this server");
460 exit_client(client_p, source_p, &me, "Install identd");
461 return (CLIENT_EXITED);
462 }
463
464 /* dont replace username if its supposed to be spoofed --fl */
465 if(!IsConfDoSpoofIp(aconf) || !strchr(aconf->info.name, '@'))
466 {
467 p = myusername;
468
469 if(!IsNoTilde(aconf))
470 source_p->username[i++] = '~';
471
472 while (*p && i < USERLEN)
473 {
474 if(*p != '[')
475 source_p->username[i++] = *p;
476 p++;
477 }
478
479 source_p->username[i] = '\0';
480 }
481 }
482
483 if(IsNeedSasl(aconf) && !*user->suser)
484 {
485 ServerStats.is_ref++;
486 sendto_one_notice(source_p, ":*** Notice -- You need to identify via SASL to use this server");
487 exit_client(client_p, source_p, &me, "SASL access only");
488 return (CLIENT_EXITED);
489 }
490
491 /* password check */
492 if(!EmptyString(aconf->passwd))
493 {
494 const char *encr;
495
496 if(EmptyString(source_p->localClient->passwd))
497 encr = "";
498 else if(IsConfEncrypted(aconf))
499 encr = rb_crypt(source_p->localClient->passwd, aconf->passwd);
500 else
501 encr = source_p->localClient->passwd;
502
503 if(encr == NULL || strcmp(encr, aconf->passwd))
504 {
505 ServerStats.is_ref++;
506 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
507 exit_client(client_p, source_p, &me, "Bad Password");
508 return (CLIENT_EXITED);
509 }
510
511 /* clear password only if used now, otherwise send it
512 * to services -- jilles */
513 if(source_p->localClient->passwd)
514 {
515 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
516 rb_free(source_p->localClient->passwd);
517 source_p->localClient->passwd = NULL;
518 }
519 }
520
521 /* report and set flags (kline exempt etc.) as needed in source_p */
522 report_and_set_user_flags(source_p, aconf);
523
524 /* Limit clients */
525 /*
526 * We want to be able to have servers and F-line clients
527 * connect, so save room for "buffer" connections.
528 * Smaller servers may want to decrease this, and it should
529 * probably be just a percentage of the MAXCLIENTS...
530 * -Taner
531 */
532 /* Except "F:" clients */
533 if(rb_dlink_list_length(&lclient_list) >=
534 (unsigned long)GlobalSetOptions.maxclients && !IsConfExemptLimits(aconf))
535 {
536 sendto_realops_snomask(SNO_FULL, L_ALL,
537 "Too many clients, rejecting %s[%s].", source_p->name, source_p->host);
538
539 ServerStats.is_ref++;
540 exit_client(client_p, source_p, &me, "Sorry, server is full - try later");
541 return (CLIENT_EXITED);
542 }
543
544 /* kline exemption extends to xline too */
545 if(!IsExemptKline(source_p) &&
546 (xconf = find_xline(source_p->info, 1)) != NULL)
547 {
548 ServerStats.is_ref++;
549 add_reject(source_p, xconf->host, NULL);
550 exit_client(client_p, source_p, &me, "Bad user info");
551 return CLIENT_EXITED;
552 }
553
554 /* authd rejection check */
555 if(authd_check(client_p, source_p))
556 return CLIENT_EXITED;
557
558 /* valid user name check */
559
560 if(!valid_username(source_p->username))
561 {
562 sendto_realops_snomask(SNO_REJ, L_ALL,
563 "Invalid username: %s (%s@%s)",
564 source_p->name, source_p->username, source_p->host);
565 ServerStats.is_ref++;
566 sendto_one_notice(source_p, ":*** Your username is invalid. Please make sure that your username contains "
567 "only alphanumeric characters.");
568 sprintf(tmpstr2, "Invalid username [%s]", source_p->username);
569 exit_client(client_p, source_p, &me, tmpstr2);
570 return (CLIENT_EXITED);
571 }
572
573 /* end of valid user name check */
574
575 /* Store original hostname -- jilles */
576 rb_strlcpy(source_p->orighost, source_p->host, HOSTLEN + 1);
577
578 /* Spoof user@host */
579 if(*source_p->preClient->spoofuser)
580 rb_strlcpy(source_p->username, source_p->preClient->spoofuser, USERLEN + 1);
581 if(*source_p->preClient->spoofhost)
582 {
583 rb_strlcpy(source_p->host, source_p->preClient->spoofhost, HOSTLEN + 1);
584 if (irccmp(source_p->host, source_p->orighost))
585 SetDynSpoof(source_p);
586 }
587
588 source_p->umodes |= ConfigFileEntry.default_umodes & ~ConfigFileEntry.oper_only_umodes & ~orphaned_umodes;
589
590 call_hook(h_new_local_user, source_p);
591
592 /* If they have died in send_* or were thrown out by the
593 * new_local_user hook don't do anything. */
594 if(IsAnyDead(source_p))
595 return CLIENT_EXITED;
596
597 /* To avoid inconsistencies, do not abort the registration
598 * starting from this point -- jilles
599 */
600 rb_inet_ntop_sock((struct sockaddr *)&source_p->localClient->ip, ipaddr, sizeof(ipaddr));
601
602 sendto_realops_snomask(SNO_CCONN, L_ALL,
603 "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
604 source_p->name, source_p->username, source_p->orighost,
605 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
606 get_client_class(source_p), source_p->info);
607
608 sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
609 "CLICONN %s %s %s %s %s %s 0 %s",
610 source_p->name, source_p->username, source_p->orighost,
611 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
612 get_client_class(source_p),
613 /* mirc can sometimes send ips here */
614 show_ip(NULL, source_p) ? source_p->localClient->fullcaps : "<hidden> <hidden>",
615 source_p->info);
616
617 add_to_hostname_hash(source_p->orighost, source_p);
618
619 /* Allocate a UID if it was not previously allocated.
620 * If this already occured, it was probably during SASL auth...
621 */
622 if(!*source_p->id)
623 {
624 strcpy(source_p->id, generate_uid());
625 add_to_id_hash(source_p->id, source_p);
626 }
627
628 if (IsSSL(source_p))
629 source_p->umodes |= UMODE_SSLCLIENT;
630
631 if (source_p->umodes & UMODE_INVISIBLE)
632 Count.invisi++;
633
634 s_assert(!IsClient(source_p));
635 rb_dlinkMoveNode(&source_p->localClient->tnode, &unknown_list, &lclient_list);
636 SetClient(source_p);
637
638 source_p->servptr = &me;
639 rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
640
641 /* Increment our total user count here */
642 if(++Count.total > Count.max_tot)
643 Count.max_tot = Count.total;
644
645 Count.totalrestartcount++;
646
647 s_assert(source_p->localClient != NULL);
648
649 if(rb_dlink_list_length(&lclient_list) > (unsigned long)Count.max_loc)
650 {
651 Count.max_loc = rb_dlink_list_length(&lclient_list);
652 if(!(Count.max_loc % 10))
653 sendto_realops_snomask(SNO_GENERAL, L_ALL,
654 "New Max Local Clients: %d", Count.max_loc);
655 }
656
657 /* they get a reduced limit */
658 if(find_tgchange(source_p->sockhost))
659 source_p->localClient->targets_free = TGCHANGE_INITIAL_LOW;
660 else
661 source_p->localClient->targets_free = TGCHANGE_INITIAL;
662
663 monitor_signon(source_p);
664 user_welcome(source_p);
665
666 free_pre_client(source_p);
667
668 introduce_client(client_p, source_p, user, source_p->name, 1);
669 return 0;
670 }
671
672 /*
673 * introduce_clients
674 *
675 * inputs -
676 * output -
677 * side effects - This common function introduces a client to the rest
678 * of the net, either from a local client connect or
679 * from a remote connect.
680 */
681 void
682 introduce_client(struct Client *client_p, struct Client *source_p, struct User *user, const char *nick, int use_euid)
683 {
684 char ubuf[BUFSIZE];
685 struct Client *identifyservice_p;
686 char *p;
687 hook_data_umode_changed hdata;
688 hook_data_client hdata2;
689
690 if(MyClient(source_p))
691 send_umode(source_p, source_p, 0, ubuf);
692 else
693 send_umode(NULL, source_p, 0, ubuf);
694
695 if(!*ubuf)
696 {
697 ubuf[0] = '+';
698 ubuf[1] = '\0';
699 }
700
701 s_assert(has_id(source_p));
702
703 if (use_euid)
704 sendto_server(client_p, NULL, CAP_EUID | CAP_TS6, NOCAPS,
705 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
706 source_p->servptr->id, nick,
707 source_p->hopcount + 1,
708 (long) source_p->tsinfo, ubuf,
709 source_p->username, source_p->host,
710 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
711 source_p->id,
712 IsDynSpoof(source_p) ? source_p->orighost : "*",
713 EmptyString(source_p->user->suser) ? "*" : source_p->user->suser,
714 source_p->info);
715
716 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS,
717 ":%s UID %s %d %ld %s %s %s %s %s :%s",
718 source_p->servptr->id, nick,
719 source_p->hopcount + 1,
720 (long) source_p->tsinfo, ubuf,
721 source_p->username, source_p->host,
722 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
723 source_p->id, source_p->info);
724
725 if(!EmptyString(source_p->certfp))
726 sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
727 ":%s ENCAP * CERTFP :%s",
728 use_id(source_p), source_p->certfp);
729
730 if (IsDynSpoof(source_p))
731 {
732 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * REALHOST %s",
733 use_id(source_p), source_p->orighost);
734 }
735
736 if (!EmptyString(source_p->user->suser))
737 {
738 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * LOGIN %s",
739 use_id(source_p), source_p->user->suser);
740 }
741
742 if(MyConnect(source_p) && source_p->localClient->passwd)
743 {
744 if (!EmptyString(ConfigFileEntry.identifyservice) &&
745 !EmptyString(ConfigFileEntry.identifycommand))
746 {
747 /* use user@server */
748 p = strchr(ConfigFileEntry.identifyservice, '@');
749 if (p != NULL)
750 identifyservice_p = find_named_client(p + 1);
751 else
752 identifyservice_p = NULL;
753 if (identifyservice_p != NULL)
754 {
755 if (!EmptyString(source_p->localClient->auth_user))
756 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s %s",
757 get_id(source_p, identifyservice_p),
758 ConfigFileEntry.identifyservice,
759 ConfigFileEntry.identifycommand,
760 source_p->localClient->auth_user,
761 source_p->localClient->passwd);
762 else
763 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s",
764 get_id(source_p, identifyservice_p),
765 ConfigFileEntry.identifyservice,
766 ConfigFileEntry.identifycommand,
767 source_p->localClient->passwd);
768 }
769 }
770 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
771 rb_free(source_p->localClient->passwd);
772 source_p->localClient->passwd = NULL;
773 }
774
775 /* let modules providing usermodes know that we've got a new user,
776 * why is this here? -- well, some modules need to be able to send out new
777 * information about a client, so this was the best place to do it
778 * --nenolod
779 */
780 hdata.client = source_p;
781 hdata.oldumodes = 0;
782 hdata.oldsnomask = 0;
783 call_hook(h_umode_changed, &hdata);
784
785 /* On the other hand, some modules need to know when a client is
786 * being introduced, period.
787 * --gxti
788 */
789 hdata2.client = client_p;
790 hdata2.target = source_p;
791 call_hook(h_introduce_client, &hdata2);
792 }
793
794 /*
795 * valid_hostname - check hostname for validity
796 *
797 * Inputs - pointer to user
798 * Output - true if valid, false if not
799 * Side effects - NONE
800 *
801 * NOTE: this doesn't allow a hostname to begin with a dot and
802 * will not allow more dots than chars.
803 */
804 bool
805 valid_hostname(const char *hostname)
806 {
807 const char *p = hostname, *last_slash = 0;
808 int found_sep = 0;
809
810 s_assert(NULL != p);
811
812 if(hostname == NULL)
813 return false;
814
815 if(!strcmp(hostname, "localhost"))
816 return true;
817
818 if('.' == *p || ':' == *p || '/' == *p)
819 return false;
820
821 while (*p)
822 {
823 if(!IsHostChar(*p))
824 return false;
825 if(*p == '.' || *p == ':')
826 found_sep++;
827 else if(*p == '/')
828 {
829 found_sep++;
830 last_slash = p;
831 }
832 p++;
833 }
834
835 if(found_sep == 0)
836 return false;
837
838 if(last_slash && IsDigit(last_slash[1]))
839 return false;
840
841 return true;
842 }
843
844 /*
845 * valid_username - check username for validity
846 *
847 * Inputs - pointer to user
848 * Output - true if valid, false if not
849 * Side effects - NONE
850 *
851 * Absolutely always reject any '*' '!' '?' '@' in an user name
852 * reject any odd control characters names.
853 * Allow '.' in username to allow for "first.last"
854 * style of username
855 */
856 bool
857 valid_username(const char *username)
858 {
859 int dots = 0;
860 const char *p = username;
861
862 s_assert(NULL != p);
863
864 if(username == NULL)
865 return false;
866
867 if('~' == *p)
868 ++p;
869
870 /* reject usernames that don't start with an alphanum
871 * i.e. reject jokers who have '-@somehost' or '.@somehost'
872 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
873 */
874 if(!IsAlNum(*p))
875 return false;
876
877 while (*++p)
878 {
879 if((*p == '.') && ConfigFileEntry.dots_in_ident)
880 {
881 dots++;
882 if(dots > ConfigFileEntry.dots_in_ident)
883 return false;
884 if(!IsUserChar(p[1]))
885 return false;
886 }
887 else if(!IsUserChar(*p))
888 return false;
889 }
890 return true;
891 }
892
893 /* report_and_set_user_flags
894 *
895 * Inputs - pointer to source_p
896 * - pointer to aconf for this user
897 * Output - NONE
898 * Side effects -
899 * Report to user any special flags they are getting, and set them.
900 */
901
902 static void
903 report_and_set_user_flags(struct Client *source_p, struct ConfItem *aconf)
904 {
905 /* If this user is being spoofed, tell them so */
906 if(IsConfDoSpoofIp(aconf))
907 {
908 sendto_one_notice(source_p, ":*** Spoofing your IP");
909 }
910
911 /* If this user is in the exception class, Set it "E lined" */
912 if(IsConfExemptKline(aconf))
913 {
914 SetExemptKline(source_p);
915 sendto_one_notice(source_p, ":*** You are exempt from K/X lines");
916 }
917
918 if(IsConfExemptDNSBL(aconf))
919 /* kline exempt implies this, don't send both */
920 if(!IsConfExemptKline(aconf))
921 sendto_one_notice(source_p, ":*** You are exempt from DNS blacklists");
922
923 /* If this user is exempt from user limits set it F lined" */
924 if(IsConfExemptLimits(aconf))
925 {
926 sendto_one_notice(source_p, ":*** You are exempt from user limits");
927 }
928
929 if(IsConfExemptFlood(aconf))
930 {
931 SetExemptFlood(source_p);
932 sendto_one_notice(source_p, ":*** You are exempt from flood limits");
933 }
934
935 if(IsConfExemptSpambot(aconf))
936 {
937 SetExemptSpambot(source_p);
938 sendto_one_notice(source_p, ":*** You are exempt from spambot checks");
939 }
940
941 if(IsConfExemptJupe(aconf))
942 {
943 SetExemptJupe(source_p);
944 sendto_one_notice(source_p, ":*** You are exempt from juped channel warnings");
945 }
946
947 if(IsConfExemptResv(aconf))
948 {
949 SetExemptResv(source_p);
950 sendto_one_notice(source_p, ":*** You are exempt from resvs");
951 }
952
953 if(IsConfExemptShide(aconf))
954 {
955 SetExemptShide(source_p);
956 sendto_one_notice(source_p, ":*** You are exempt from serverhiding");
957 }
958
959 if(IsConfExtendChans(aconf))
960 {
961 SetExtendChans(source_p);
962 sendto_one_notice(source_p, ":*** You are exempt from normal channel limits");
963 }
964 }
965
966 static void
967 show_other_user_mode(struct Client *source_p, struct Client *target_p)
968 {
969 int i;
970 char buf[BUFSIZE];
971 char *m;
972
973 m = buf;
974 *m++ = '+';
975
976 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
977 if (target_p->umodes & user_modes[i])
978 *m++ = (char) i;
979 *m = '\0';
980
981 if (MyConnect(target_p) && target_p->snomask != 0)
982 sendto_one_notice(source_p, ":Modes for %s are %s %s",
983 target_p->name, buf,
984 construct_snobuf(target_p->snomask));
985 else
986 sendto_one_notice(source_p, ":Modes for %s are %s",
987 target_p->name, buf);
988 }
989
990 /*
991 * user_mode - set get current users mode
992 *
993 * m_umode() added 15/10/91 By Darren Reed.
994 * parv[1] - username to change mode for
995 * parv[2] - modes to change
996 */
997 int
998 user_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
999 {
1000 int flag;
1001 int i;
1002 char *m;
1003 const char *pm;
1004 struct Client *target_p;
1005 int what, setflags;
1006 bool badflag = false; /* Only send one bad flag notice */
1007 bool showsnomask = false;
1008 unsigned int setsnomask;
1009 char buf[BUFSIZE];
1010 hook_data_umode_changed hdata;
1011
1012 what = MODE_ADD;
1013
1014 if(parc < 2)
1015 {
1016 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "MODE");
1017 return 0;
1018 }
1019
1020 if((target_p = MyClient(source_p) ? find_named_person(parv[1]) : find_person(parv[1])) == NULL)
1021 {
1022 if(MyConnect(source_p))
1023 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
1024 form_str(ERR_NOSUCHCHANNEL), parv[1]);
1025 return 0;
1026 }
1027
1028 /* Dont know why these were commented out..
1029 * put them back using new sendto() funcs
1030 */
1031
1032 if(IsServer(source_p))
1033 {
1034 sendto_realops_snomask(SNO_GENERAL, L_ADMIN,
1035 "*** Mode for User %s from %s", parv[1], source_p->name);
1036 return 0;
1037 }
1038
1039 if(source_p != target_p)
1040 {
1041 if (MyOper(source_p) && parc < 3)
1042 show_other_user_mode(source_p, target_p);
1043 else
1044 sendto_one(source_p, form_str(ERR_USERSDONTMATCH), me.name, source_p->name);
1045 return 0;
1046 }
1047
1048 if(parc < 3)
1049 {
1050 m = buf;
1051 *m++ = '+';
1052
1053 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
1054 if (source_p->umodes & user_modes[i])
1055 *m++ = (char) i;
1056
1057 *m = '\0';
1058 sendto_one_numeric(source_p, RPL_UMODEIS, form_str(RPL_UMODEIS), buf);
1059
1060 if (source_p->snomask != 0)
1061 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1062 construct_snobuf(source_p->snomask));
1063
1064 return 0;
1065 }
1066
1067 /* find flags already set for user */
1068 setflags = source_p->umodes;
1069 setsnomask = source_p->snomask;
1070
1071 /*
1072 * parse mode change string(s)
1073 */
1074 for (pm = parv[2]; *pm; pm++)
1075 switch (*pm)
1076 {
1077 case '+':
1078 what = MODE_ADD;
1079 break;
1080 case '-':
1081 what = MODE_DEL;
1082 break;
1083
1084 case 'o':
1085 if(what == MODE_ADD)
1086 {
1087 if(IsServer(client_p) && !IsOper(source_p))
1088 {
1089 ++Count.oper;
1090 SetOper(source_p);
1091 rb_dlinkAddAlloc(source_p, &oper_list);
1092 }
1093 }
1094 else
1095 {
1096 /* Only decrement the oper counts if an oper to begin with
1097 * found by Pat Szuta, Perly , perly@xnet.com
1098 */
1099
1100 if(!IsOper(source_p))
1101 break;
1102
1103 ClearOper(source_p);
1104
1105 Count.oper--;
1106
1107 if(MyConnect(source_p))
1108 {
1109 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
1110 if (!(source_p->umodes & UMODE_SERVNOTICE) && source_p->snomask != 0)
1111 {
1112 source_p->snomask = 0;
1113 showsnomask = true;
1114 }
1115 source_p->flags &= ~OPER_FLAGS;
1116
1117 rb_free(source_p->localClient->opername);
1118 source_p->localClient->opername = NULL;
1119
1120 rb_dlinkFindDestroy(source_p, &local_oper_list);
1121 privilegeset_unref(source_p->localClient->privset);
1122 source_p->localClient->privset = NULL;
1123 }
1124
1125 rb_dlinkFindDestroy(source_p, &oper_list);
1126 }
1127 break;
1128
1129 /* we may not get these,
1130 * but they shouldnt be in default
1131 */
1132
1133 /* can only be set on burst */
1134 case 'S':
1135 case 'Z':
1136 case ' ':
1137 case '\n':
1138 case '\r':
1139 case '\t':
1140 break;
1141
1142 case 's':
1143 if (MyConnect(source_p))
1144 {
1145 if(!IsOper(source_p)
1146 && (ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE))
1147 {
1148 if (what == MODE_ADD || source_p->umodes & UMODE_SERVNOTICE)
1149 badflag = true;
1150 continue;
1151 }
1152 showsnomask = true;
1153 if(what == MODE_ADD)
1154 {
1155 if (parc > 3)
1156 source_p->snomask = parse_snobuf_to_mask(source_p->snomask, parv[3]);
1157 else
1158 source_p->snomask |= SNO_GENERAL;
1159 }
1160 else
1161 source_p->snomask = 0;
1162 if (source_p->snomask != 0)
1163 source_p->umodes |= UMODE_SERVNOTICE;
1164 else
1165 source_p->umodes &= ~UMODE_SERVNOTICE;
1166 break;
1167 }
1168 /* FALLTHROUGH */
1169 default:
1170 if (MyConnect(source_p) && *pm == 'Q' && !ConfigChannel.use_forward)
1171 {
1172 badflag = true;
1173 break;
1174 }
1175
1176 if((flag = user_modes[(unsigned char) *pm]))
1177 {
1178 if(MyConnect(source_p)
1179 && ((!IsOper(source_p)
1180 && (ConfigFileEntry.oper_only_umodes & flag))
1181 || (orphaned_umodes & flag)))
1182 {
1183 if (what == MODE_ADD || source_p->umodes & flag)
1184 badflag = true;
1185 }
1186 else
1187 {
1188 if(what == MODE_ADD)
1189 source_p->umodes |= flag;
1190 else
1191 source_p->umodes &= ~flag;
1192 }
1193 }
1194 else
1195 {
1196 if(MyConnect(source_p))
1197 badflag = true;
1198 }
1199 break;
1200 }
1201
1202 if(badflag)
1203 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG), me.name, source_p->name);
1204
1205 if(MyClient(source_p) && (source_p->snomask & SNO_NCHANGE) && !IsOperN(source_p))
1206 {
1207 sendto_one_notice(source_p, ":*** You need oper and nick_changes flag for +s +n");
1208 source_p->snomask &= ~SNO_NCHANGE; /* only tcm's really need this */
1209 }
1210
1211 if(MyClient(source_p) && (source_p->umodes & UMODE_OPERWALL) && !IsOperOperwall(source_p))
1212 {
1213 sendto_one_notice(source_p, ":*** You need oper and operwall flag for +z");
1214 source_p->umodes &= ~UMODE_OPERWALL;
1215 }
1216
1217 if(MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1218 (!IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p)))
1219 {
1220 sendto_one_notice(source_p, ":*** You need oper and admin flag for +a");
1221 source_p->umodes &= ~UMODE_ADMIN;
1222 }
1223
1224 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1225 hdata.client = source_p;
1226 hdata.oldumodes = setflags;
1227 hdata.oldsnomask = setsnomask;
1228 call_hook(h_umode_changed, &hdata);
1229
1230 if(!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1231 ++Count.invisi;
1232 if((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1233 --Count.invisi;
1234 /*
1235 * compare new flags with old flags and send string which
1236 * will cause servers to update correctly.
1237 */
1238 send_umode_out(client_p, source_p, setflags);
1239 if (showsnomask && MyConnect(source_p))
1240 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1241 construct_snobuf(source_p->snomask));
1242
1243 return (0);
1244 }
1245
1246 /*
1247 * send the MODE string for user (user) to connection client_p
1248 * -avalon
1249 */
1250 void
1251 send_umode(struct Client *client_p, struct Client *source_p, int old, char *umode_buf)
1252 {
1253 int i;
1254 int flag;
1255 char *m;
1256 int what = 0;
1257
1258 /*
1259 * build a string in umode_buf to represent the change in the user's
1260 * mode between the new (source_p->flag) and 'old'.
1261 */
1262 m = umode_buf;
1263 *m = '\0';
1264
1265 for (i = 0; i < 128; i++)
1266 {
1267 flag = user_modes[i];
1268
1269 if((flag & old) && !(source_p->umodes & flag))
1270 {
1271 if(what == MODE_DEL)
1272 *m++ = (char) i;
1273 else
1274 {
1275 what = MODE_DEL;
1276 *m++ = '-';
1277 *m++ = (char) i;
1278 }
1279 }
1280 else if(!(flag & old) && (source_p->umodes & flag))
1281 {
1282 if(what == MODE_ADD)
1283 *m++ = (char) i;
1284 else
1285 {
1286 what = MODE_ADD;
1287 *m++ = '+';
1288 *m++ = (char) i;
1289 }
1290 }
1291 }
1292 *m = '\0';
1293
1294 if(*umode_buf && client_p)
1295 sendto_one(client_p, ":%s MODE %s :%s", source_p->name, source_p->name, umode_buf);
1296 }
1297
1298 /*
1299 * send_umode_out
1300 *
1301 * inputs -
1302 * output - NONE
1303 * side effects -
1304 */
1305 void
1306 send_umode_out(struct Client *client_p, struct Client *source_p, int old)
1307 {
1308 struct Client *target_p;
1309 char buf[BUFSIZE];
1310 rb_dlink_node *ptr;
1311
1312 send_umode(NULL, source_p, old, buf);
1313
1314 RB_DLINK_FOREACH(ptr, serv_list.head)
1315 {
1316 target_p = ptr->data;
1317
1318 if((target_p != client_p) && (target_p != source_p) && (*buf))
1319 {
1320 sendto_one(target_p, ":%s MODE %s :%s",
1321 get_id(source_p, target_p),
1322 get_id(source_p, target_p), buf);
1323 }
1324 }
1325
1326 if(client_p && MyClient(client_p))
1327 send_umode(client_p, source_p, old, buf);
1328 }
1329
1330 /*
1331 * user_welcome
1332 *
1333 * inputs - client pointer to client to welcome
1334 * output - NONE
1335 * side effects -
1336 */
1337 void
1338 user_welcome(struct Client *source_p)
1339 {
1340 sendto_one_numeric(source_p, RPL_WELCOME, form_str(RPL_WELCOME), ServerInfo.network_name, source_p->name);
1341 sendto_one_numeric(source_p, RPL_YOURHOST, form_str(RPL_YOURHOST),
1342 get_listener_name(source_p->localClient->listener), ircd_version);
1343 sendto_one_numeric(source_p, RPL_CREATED, form_str(RPL_CREATED), creation);
1344 sendto_one_numeric(source_p, RPL_MYINFO, form_str(RPL_MYINFO), me.name, ircd_version, umodebuf, cflagsmyinfo);
1345
1346 show_isupport(source_p);
1347
1348 show_lusers(source_p);
1349
1350 if(ConfigFileEntry.short_motd)
1351 {
1352 sendto_one_notice(source_p, ":*** Notice -- motd was last changed at %s", user_motd_changed);
1353 sendto_one_notice(source_p, ":*** Notice -- Please read the motd if you haven't read it");
1354
1355 sendto_one(source_p, form_str(RPL_MOTDSTART),
1356 me.name, source_p->name, me.name);
1357
1358 sendto_one(source_p, form_str(RPL_MOTD),
1359 me.name, source_p->name, "*** This is the short motd ***");
1360
1361 sendto_one(source_p, form_str(RPL_ENDOFMOTD), me.name, source_p->name);
1362 }
1363 else
1364 send_user_motd(source_p);
1365 }
1366
1367 /* oper_up()
1368 *
1369 * inputs - pointer to given client to oper
1370 * - pointer to ConfItem to use
1371 * output - none
1372 * side effects - opers up source_p using aconf for reference
1373 */
1374 void
1375 oper_up(struct Client *source_p, struct oper_conf *oper_p)
1376 {
1377 unsigned int old = source_p->umodes, oldsnomask = source_p->snomask;
1378 hook_data_umode_changed hdata;
1379
1380 SetOper(source_p);
1381
1382 if(oper_p->umodes)
1383 source_p->umodes |= oper_p->umodes;
1384 else if(ConfigFileEntry.oper_umodes)
1385 source_p->umodes |= ConfigFileEntry.oper_umodes;
1386 else
1387 source_p->umodes |= DEFAULT_OPER_UMODES;
1388
1389 if (oper_p->snomask)
1390 {
1391 source_p->snomask |= oper_p->snomask;
1392 source_p->umodes |= UMODE_SERVNOTICE;
1393 }
1394 else if (source_p->umodes & UMODE_SERVNOTICE)
1395 {
1396 /* Only apply these if +s is already set -- jilles */
1397 if (ConfigFileEntry.oper_snomask)
1398 source_p->snomask |= ConfigFileEntry.oper_snomask;
1399 else
1400 source_p->snomask |= DEFAULT_OPER_SNOMASK;
1401 }
1402
1403 Count.oper++;
1404
1405 SetExtendChans(source_p);
1406 SetExemptKline(source_p);
1407
1408 source_p->flags |= oper_p->flags;
1409 source_p->localClient->opername = rb_strdup(oper_p->name);
1410 source_p->localClient->privset = privilegeset_ref(oper_p->privset);
1411
1412 rb_dlinkAddAlloc(source_p, &local_oper_list);
1413 rb_dlinkAddAlloc(source_p, &oper_list);
1414
1415 if(IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1416 source_p->umodes |= UMODE_ADMIN;
1417 if(!IsOperN(source_p))
1418 source_p->snomask &= ~SNO_NCHANGE;
1419 if(!IsOperOperwall(source_p))
1420 source_p->umodes &= ~UMODE_OPERWALL;
1421 hdata.client = source_p;
1422 hdata.oldumodes = old;
1423 hdata.oldsnomask = oldsnomask;
1424 call_hook(h_umode_changed, &hdata);
1425
1426 sendto_realops_snomask(SNO_GENERAL, L_ALL,
1427 "%s (%s!%s@%s) is now an operator", oper_p->name, source_p->name,
1428 source_p->username, source_p->host);
1429 if(!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1430 ++Count.invisi;
1431 if((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1432 --Count.invisi;
1433 send_umode_out(source_p, source_p, old);
1434 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1435 construct_snobuf(source_p->snomask));
1436 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1437 sendto_one_notice(source_p, ":*** Oper privilege set is %s", oper_p->privset->name);
1438 sendto_one_notice(source_p, ":*** Oper privs are %s", oper_p->privset->privs);
1439 send_oper_motd(source_p);
1440 }
1441
1442 /*
1443 * find_umode_slot
1444 *
1445 * inputs - NONE
1446 * outputs - an available umode bitmask or
1447 * 0 if no umodes are available
1448 * side effects - NONE
1449 */
1450 unsigned int
1451 find_umode_slot(void)
1452 {
1453 unsigned int all_umodes = 0, my_umode = 0, i;
1454
1455 for (i = 0; i < 128; i++)
1456 all_umodes |= user_modes[i];
1457
1458 for (my_umode = 1; my_umode && (all_umodes & my_umode);
1459 my_umode <<= 1);
1460
1461 return my_umode;
1462 }
1463
1464 void
1465 construct_umodebuf(void)
1466 {
1467 int i;
1468 char *ptr = umodebuf;
1469 static int prev_user_modes[128];
1470
1471 *ptr = '\0';
1472
1473 for (i = 0; i < 128; i++)
1474 {
1475 if (prev_user_modes[i] != 0 && prev_user_modes[i] != user_modes[i])
1476 {
1477 if (user_modes[i] == 0)
1478 {
1479 orphaned_umodes |= prev_user_modes[i];
1480 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Umode +%c is now orphaned", i);
1481 }
1482 else
1483 {
1484 orphaned_umodes &= ~prev_user_modes[i];
1485 sendto_realops_snomask(SNO_DEBUG, L_ALL, "Orphaned umode +%c is picked up by module", i);
1486 }
1487 user_modes[i] = prev_user_modes[i];
1488 }
1489 else
1490 prev_user_modes[i] = user_modes[i];
1491 if (user_modes[i])
1492 *ptr++ = (char) i;
1493 }
1494
1495 *ptr++ = '\0';
1496 }
1497
1498 void
1499 change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
1500 const char *host, int newts, const char *format, ...)
1501 {
1502 rb_dlink_node *ptr;
1503 struct Channel *chptr;
1504 struct membership *mscptr;
1505 int changed = irccmp(target_p->name, nick);
1506 int changed_case = strcmp(target_p->name, nick);
1507 int do_qjm = irccmp(target_p->username, user) || irccmp(target_p->host, host);
1508 char mode[10], modeval[NICKLEN * 2 + 2], reason[256], *mptr;
1509 va_list ap;
1510
1511 modeval[0] = '\0';
1512
1513 if(changed)
1514 {
1515 target_p->tsinfo = newts;
1516 monitor_signoff(target_p);
1517 }
1518 invalidate_bancache_user(target_p);
1519
1520 if(do_qjm)
1521 {
1522 va_start(ap, format);
1523 vsnprintf(reason, 255, format, ap);
1524 va_end(ap);
1525
1526 sendto_common_channels_local_butone(target_p, NOCAPS, CLICAP_CHGHOST, ":%s!%s@%s QUIT :%s",
1527 target_p->name, target_p->username, target_p->host,
1528 reason);
1529
1530 RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
1531 {
1532 mscptr = ptr->data;
1533 chptr = mscptr->chptr;
1534 mptr = mode;
1535
1536 if(is_chanop(mscptr))
1537 {
1538 *mptr++ = 'o';
1539 strcat(modeval, nick);
1540 strcat(modeval, " ");
1541 }
1542
1543 if(is_voiced(mscptr))
1544 {
1545 *mptr++ = 'v';
1546 strcat(modeval, nick);
1547 }
1548
1549 *mptr = '\0';
1550
1551 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN | CLICAP_CHGHOST, chptr,
1552 ":%s!%s@%s JOIN %s", nick, user, host, chptr->chname);
1553 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, CLICAP_EXTENDED_JOIN, CLICAP_CHGHOST, chptr,
1554 ":%s!%s@%s JOIN %s %s :%s", nick, user, host, chptr->chname,
1555 EmptyString(target_p->user->suser) ? "*" : target_p->user->suser,
1556 target_p->info);
1557
1558 if(*mode)
1559 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_CHGHOST, chptr,
1560 ":%s MODE %s +%s %s", target_p->servptr->name, chptr->chname, mode, modeval);
1561
1562 *modeval = '\0';
1563 }
1564
1565 /* Resend away message to away-notify enabled clients. */
1566 if (target_p->user->away)
1567 sendto_common_channels_local_butone(target_p, CLICAP_AWAY_NOTIFY, CLICAP_CHGHOST, ":%s!%s@%s AWAY :%s",
1568 nick, user, host,
1569 target_p->user->away);
1570
1571 sendto_common_channels_local_butone(target_p, CLICAP_CHGHOST, NOCAPS,
1572 ":%s!%s@%s CHGHOST %s %s",
1573 target_p->name, target_p->username, target_p->host, user, host);
1574
1575 if(MyClient(target_p) && changed_case)
1576 sendto_one(target_p, ":%s!%s@%s NICK %s",
1577 target_p->name, user, host, nick);
1578
1579 /* TODO: send some snotes to SNO_NCHANGE/SNO_CCONN/SNO_CCONNEXT? */
1580 }
1581 else if(changed_case)
1582 {
1583 sendto_common_channels_local(target_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s",
1584 target_p->name, user, host, nick);
1585
1586 if(MyConnect(target_p))
1587 sendto_realops_snomask(SNO_NCHANGE, L_ALL,
1588 "Nick change: From %s to %s [%s@%s]",
1589 target_p->name, nick,
1590 target_p->username, target_p->host);
1591 }
1592
1593 if (user != target_p->username)
1594 rb_strlcpy(target_p->username, user, sizeof target_p->username);
1595
1596 rb_strlcpy(target_p->host, host, sizeof target_p->host);
1597
1598 if (changed)
1599 whowas_add_history(target_p, 1);
1600
1601 del_from_client_hash(target_p->name, target_p);
1602 rb_strlcpy(target_p->name, nick, NICKLEN);
1603 add_to_client_hash(target_p->name, target_p);
1604
1605 if(changed)
1606 {
1607 monitor_signon(target_p);
1608 del_all_accepts(target_p);
1609 }
1610 }
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