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root/svn/ircd-hybrid/branches/8.2.x/src/user.c
Revision: 1137
Committed: Sun May 29 19:04:06 2011 UTC (12 years, 10 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid-7.3/src/s_user.c
File size: 39657 byte(s)
Log Message:
- User IDs are now shown in client connection notices.
Requested by some ircu user.

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * s_user.c: User related functions.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "list.h"
27 #include "s_user.h"
28 #include "s_misc.h"
29 #include "channel.h"
30 #include "channel_mode.h"
31 #include "client.h"
32 #include "common.h"
33 #include "fdlist.h"
34 #include "hash.h"
35 #include "irc_string.h"
36 #include "sprintf_irc.h"
37 #include "s_bsd.h"
38 #include "ircd.h"
39 #include "listener.h"
40 #include "motd.h"
41 #include "numeric.h"
42 #include "s_conf.h"
43 #include "s_log.h"
44 #include "s_serv.h"
45 #include "send.h"
46 #include "supported.h"
47 #include "whowas.h"
48 #include "memory.h"
49 #include "packet.h"
50 #include "rng_mt.h"
51 #include "userhost.h"
52 #include "hook.h"
53 #include "s_misc.h"
54 #include "msg.h"
55 #include "watch.h"
56
57 unsigned int MaxClientCount = 1;
58 unsigned int MaxConnectionCount = 1;
59 struct Callback *entering_umode_cb = NULL;
60 struct Callback *umode_cb = NULL;
61
62 static char umode_buffer[IRCD_BUFSIZE];
63
64 static void user_welcome(struct Client *);
65 static void report_and_set_user_flags(struct Client *, const struct AccessItem *);
66 static int check_xline(struct Client *);
67 static void introduce_client(struct Client *);
68 static const char *uid_get(void);
69
70 /* Used for building up the isupport string,
71 * used with init_isupport, add_isupport, delete_isupport
72 */
73
74 struct Isupport
75 {
76 dlink_node node;
77 char *name;
78 char *options;
79 int number;
80 };
81
82 static dlink_list support_list = { NULL, NULL, 0 };
83 MessageFile *isupportFile;
84
85 /* memory is cheap. map 0-255 to equivalent mode */
86 unsigned int user_modes[256] =
87 {
88 /* 0x00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x0F */
89 /* 0x10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x1F */
90 /* 0x20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x2F */
91 /* 0x30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x3F */
92 0, /* @ */
93 0, /* A */
94 0, /* B */
95 UMODE_CCONN_FULL, /* C */
96 UMODE_DEAF, /* D */
97 0, /* E */
98 0, /* F */
99 UMODE_SOFTCALLERID, /* G */
100 0, /* H */
101 0, /* I */
102 0, /* J */
103 0, /* K */
104 0, /* L */
105 0, /* M */
106 0, /* N */
107 0, /* O */
108 0, /* P */
109 0, /* Q */
110 0, /* R */
111 0, /* S */
112 0, /* T */
113 0, /* U */
114 0, /* V */
115 0, /* W */
116 0, /* X */
117 0, /* Y */
118 0, /* Z 0x5A */
119 0, 0, 0, 0, 0, /* 0x5F */
120 0, /* 0x60 */
121 UMODE_ADMIN, /* a */
122 UMODE_BOTS, /* b */
123 UMODE_CCONN, /* c */
124 UMODE_DEBUG, /* d */
125 0, /* e */
126 UMODE_FULL, /* f */
127 UMODE_CALLERID, /* g */
128 0, /* h */
129 UMODE_INVISIBLE, /* i */
130 0, /* j */
131 UMODE_SKILL, /* k */
132 UMODE_LOCOPS, /* l */
133 0, /* m */
134 UMODE_NCHANGE, /* n */
135 UMODE_OPER, /* o */
136 0, /* p */
137 0, /* q */
138 UMODE_REJ, /* r */
139 UMODE_SERVNOTICE, /* s */
140 0, /* t */
141 UMODE_UNAUTH, /* u */
142 0, /* v */
143 UMODE_WALLOP, /* w */
144 UMODE_EXTERNAL, /* x */
145 UMODE_SPY, /* y */
146 UMODE_OPERWALL, /* z 0x7A */
147 0,0,0,0,0, /* 0x7B - 0x7F */
148
149 /* 0x80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x8F */
150 /* 0x90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x9F */
151 /* 0xA0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xAF */
152 /* 0xB0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xBF */
153 /* 0xC0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xCF */
154 /* 0xD0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xDF */
155 /* 0xE0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xEF */
156 /* 0xF0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xFF */
157 };
158
159 void
160 assemble_umode_buffer(void)
161 {
162 unsigned int idx = 0;
163 char *umode_buffer_ptr = umode_buffer;
164
165 for (; idx < (sizeof(user_modes) / sizeof(user_modes[0])); ++idx)
166 if (user_modes[idx])
167 *umode_buffer_ptr++ = idx;
168
169 *umode_buffer_ptr = '\0';
170 }
171
172 /* show_lusers()
173 *
174 * inputs - pointer to client
175 * output - NONE
176 * side effects - display to client user counts etc.
177 */
178 void
179 show_lusers(struct Client *source_p)
180 {
181 const char *from, *to;
182
183 if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
184 {
185 from = me.id;
186 to = source_p->id;
187 }
188 else
189 {
190 from = me.name;
191 to = source_p->name;
192 }
193
194 if (!ConfigServerHide.hide_servers || IsOper(source_p))
195 sendto_one(source_p, form_str(RPL_LUSERCLIENT),
196 from, to, (Count.total-Count.invisi),
197 Count.invisi, dlink_list_length(&global_serv_list));
198 else
199 sendto_one(source_p, form_str(RPL_LUSERCLIENT), from, to,
200 (Count.total-Count.invisi), Count.invisi, 1);
201
202 if (Count.oper > 0)
203 sendto_one(source_p, form_str(RPL_LUSEROP),
204 from, to, Count.oper);
205
206 if (dlink_list_length(&unknown_list) > 0)
207 sendto_one(source_p, form_str(RPL_LUSERUNKNOWN),
208 from, to, dlink_list_length(&unknown_list));
209
210 if (dlink_list_length(&global_channel_list) > 0)
211 sendto_one(source_p, form_str(RPL_LUSERCHANNELS),
212 from, to, dlink_list_length(&global_channel_list));
213
214 if (!ConfigServerHide.hide_servers || IsOper(source_p))
215 {
216 sendto_one(source_p, form_str(RPL_LUSERME),
217 from, to, Count.local, Count.myserver);
218 sendto_one(source_p, form_str(RPL_LOCALUSERS),
219 from, to, Count.local, Count.max_loc,
220 Count.local, Count.max_loc);
221 }
222 else
223 {
224 sendto_one(source_p, form_str(RPL_LUSERME),
225 from, to, Count.total, 0);
226 sendto_one(source_p, form_str(RPL_LOCALUSERS),
227 from, to, Count.total, Count.max_tot,
228 Count.total, Count.max_tot);
229 }
230
231 sendto_one(source_p, form_str(RPL_GLOBALUSERS),
232 from, to, Count.total, Count.max_tot,
233 Count.total, Count.max_tot);
234
235 if (!ConfigServerHide.hide_servers || IsOper(source_p))
236 sendto_one(source_p, form_str(RPL_STATSCONN), from, to,
237 MaxConnectionCount, MaxClientCount, Count.totalrestartcount);
238
239 if (Count.local > MaxClientCount)
240 MaxClientCount = Count.local;
241
242 if ((Count.local + Count.myserver) > MaxConnectionCount)
243 MaxConnectionCount = Count.local + Count.myserver;
244 }
245
246 /* show_isupport()
247 *
248 * inputs - pointer to client
249 * output - NONE
250 * side effects - display to client what we support (for them)
251 */
252 void
253 show_isupport(struct Client *source_p)
254 {
255 send_message_file(source_p, isupportFile);
256 }
257
258 /*
259 ** register_local_user
260 ** This function is called when both NICK and USER messages
261 ** have been accepted for the client, in whatever order. Only
262 ** after this, is the USER message propagated.
263 **
264 ** NICK's must be propagated at once when received, although
265 ** it would be better to delay them too until full info is
266 ** available. Doing it is not so simple though, would have
267 ** to implement the following:
268 **
269 ** (actually it has been implemented already for a while) -orabidoo
270 **
271 ** 1) user telnets in and gives only "NICK foobar" and waits
272 ** 2) another user far away logs in normally with the nick
273 ** "foobar" (quite legal, as this server didn't propagate
274 ** it).
275 ** 3) now this server gets nick "foobar" from outside, but
276 ** has alread the same defined locally. Current server
277 ** would just issue "KILL foobar" to clean out dups. But,
278 ** this is not fair. It should actually request another
279 ** nick from local user or kill him/her...
280 */
281 void
282 register_local_user(struct Client *source_p)
283 {
284 const char *id = NULL;
285 const struct AccessItem *aconf = NULL;
286 dlink_node *ptr = NULL;
287
288 assert(source_p != NULL);
289 assert(source_p == source_p->from);
290 assert(MyConnect(source_p));
291 assert(!source_p->localClient->registration);
292
293 ClearCap(source_p, CAP_TS6);
294
295 if (ConfigFileEntry.ping_cookie)
296 {
297 if (!IsPingSent(source_p) && source_p->localClient->random_ping == 0)
298 {
299 do
300 source_p->localClient->random_ping = genrand_int32();
301 while (!source_p->localClient->random_ping);
302
303 sendto_one(source_p, "PING :%u",
304 source_p->localClient->random_ping);
305 SetPingSent(source_p);
306 return;
307 }
308
309 if (!HasPingCookie(source_p))
310 return;
311 }
312
313 source_p->localClient->last = CurrentTime;
314 /* Straight up the maximum rate of flooding... */
315 source_p->localClient->allow_read = MAX_FLOOD_BURST;
316
317 if (!execute_callback(client_check_cb, source_p, source_p->username))
318 return;
319
320 if (valid_hostname(source_p->host) == 0)
321 {
322 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You have an illegal "
323 "character in your hostname", me.name, source_p->name);
324 strlcpy(source_p->host, source_p->sockhost,
325 sizeof(source_p->host));
326 }
327
328 ptr = source_p->localClient->confs.head;
329 aconf = map_to_conf(ptr->data);
330
331 if (!IsGotId(source_p))
332 {
333 char username[USERLEN + 1];
334 const char *p = username;
335 unsigned int i = 0;
336
337 if (IsNeedIdentd(aconf))
338 {
339 ++ServerStats.is_ref;
340 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You need to install "
341 "identd to use this server", me.name, source_p->name);
342 exit_client(source_p, &me, "Install identd");
343 return;
344 }
345
346 strlcpy(username, source_p->username, sizeof(username));
347
348 if (!IsNoTilde(aconf))
349 source_p->username[i++] = '~';
350
351 for (; *p && i < USERLEN; ++p)
352 if (*p != '[')
353 source_p->username[i++] = *p;
354
355 source_p->username[i] = '\0';
356 }
357
358 /* password check */
359 if (!EmptyString(aconf->passwd))
360 {
361 const char *pass = source_p->localClient->passwd;
362
363 if (!match_conf_password(pass, aconf))
364 {
365 ++ServerStats.is_ref;
366 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
367 me.name, source_p->name);
368 exit_client(source_p, &me, "Bad Password");
369 return;
370 }
371 }
372
373 /* don't free source_p->localClient->passwd here - it can be required
374 * by masked /stats I if there are auth{} blocks with need_password = no;
375 * --adx
376 */
377
378 /* report if user has &^>= etc. and set flags as needed in source_p */
379 report_and_set_user_flags(source_p, aconf);
380
381 if (IsDead(source_p))
382 return;
383
384 /* Limit clients -
385 * We want to be able to have servers and F-line clients
386 * connect, so save room for "buffer" connections.
387 * Smaller servers may want to decrease this, and it should
388 * probably be just a percentage of the MAXCLIENTS...
389 * -Taner
390 */
391 /* Except "F:" clients */
392 if ((Count.local >= ServerInfo.max_clients + MAX_BUFFER) ||
393 (Count.local >= ServerInfo.max_clients && !IsExemptLimits(source_p)))
394 {
395 sendto_realops_flags(UMODE_FULL, L_ALL,
396 "Too many clients, rejecting %s[%s].",
397 source_p->name, source_p->host);
398 ++ServerStats.is_ref;
399 exit_client(source_p, &me, "Sorry, server is full - try later");
400 return;
401 }
402
403 /* valid user name check */
404 if (valid_username(source_p->username) == 0)
405 {
406 char tmpstr2[IRCD_BUFSIZE];
407
408 sendto_realops_flags(UMODE_REJ, L_ALL, "Invalid username: %s (%s@%s)",
409 source_p->name, source_p->username, source_p->host);
410 ++ServerStats.is_ref;
411 snprintf(tmpstr2, sizeof(tmpstr2), "Invalid username [%s]",
412 source_p->username);
413 exit_client(source_p, &me, tmpstr2);
414 return;
415 }
416
417 if (check_xline(source_p))
418 return;
419
420 while (hash_find_id((id = uid_get())) != NULL)
421 ;
422
423 strlcpy(source_p->id, id, sizeof(source_p->id));
424 hash_add_id(source_p);
425
426 sendto_realops_flags(UMODE_CCONN, L_ALL,
427 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
428 source_p->name, source_p->username, source_p->host,
429 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
430 "255.255.255.255" : source_p->sockhost,
431 get_client_class(source_p),
432 source_p->info, source_p->id);
433
434 sendto_realops_flags(UMODE_CCONN_FULL, L_ALL,
435 "CLICONN %s %s %s %s %s %s %s 0 %s",
436 source_p->name, source_p->username, source_p->host,
437 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
438 "255.255.255.255" : source_p->sockhost,
439 get_client_class(source_p),
440 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
441 "<hidden>" : source_p->localClient->client_host,
442 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
443 "<hidden>" : source_p->localClient->client_server,
444 source_p->info);
445
446
447 if (ConfigFileEntry.invisible_on_connect)
448 {
449 source_p->umodes |= UMODE_INVISIBLE;
450 ++Count.invisi;
451 }
452
453 if ((++Count.local) > Count.max_loc)
454 {
455 Count.max_loc = Count.local;
456
457 if (!(Count.max_loc % 10))
458 sendto_realops_flags(UMODE_ALL, L_ALL, "New Max Local Clients: %d",
459 Count.max_loc);
460 }
461
462 /* Increment our total user count here */
463 if (++Count.total > Count.max_tot)
464 Count.max_tot = Count.total;
465 ++Count.totalrestartcount;
466
467 assert(source_p->servptr == &me);
468 SetClient(source_p);
469 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
470
471 source_p->localClient->allow_read = MAX_FLOOD_BURST;
472
473 assert(dlinkFind(&unknown_list, source_p));
474
475 dlink_move_node(&source_p->localClient->lclient_node,
476 &unknown_list, &local_client_list);
477
478 user_welcome(source_p);
479 add_user_host(source_p->username, source_p->host, 0);
480 SetUserHost(source_p);
481
482 introduce_client(source_p);
483 }
484
485 /* register_remote_user()
486 *
487 * inputs - source_p remote or directly connected client
488 * - username to register as
489 * - host name to register as
490 * - server name
491 * - realname (gecos)
492 * output - NONE
493 * side effects - This function is called when a remote client
494 * is introduced by a server.
495 */
496 void
497 register_remote_user(struct Client *source_p,
498 const char *username, const char *host, const char *server,
499 const char *realname)
500 {
501 struct Client *target_p = NULL;
502
503 assert(source_p != NULL);
504 assert(source_p->username != username);
505
506 strlcpy(source_p->host, host, sizeof(source_p->host));
507 strlcpy(source_p->username, username, sizeof(source_p->username));
508
509 /*
510 * coming from another server, take the servers word for it
511 */
512 source_p->servptr = find_server(server);
513
514 /* Super GhostDetect:
515 * If we can't find the server the user is supposed to be on,
516 * then simply blow the user away. -Taner
517 */
518 if (source_p->servptr == NULL)
519 {
520 sendto_realops_flags(UMODE_ALL, L_ALL,
521 "No server %s for user %s[%s@%s] from %s",
522 server, source_p->name, source_p->username,
523 source_p->host, source_p->from->name);
524 kill_client(source_p->from, source_p, "%s (Server doesn't exist)", me.name);
525
526 SetKilled(source_p);
527 exit_client(source_p, &me, "Ghosted Client");
528 return;
529 }
530
531 if ((target_p = source_p->servptr) && target_p->from != source_p->from)
532 {
533 sendto_realops_flags(UMODE_DEBUG, L_ALL,
534 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
535 source_p->from->name, source_p->name, source_p->username,
536 source_p->host, source_p->servptr->name,
537 target_p->name, target_p->from->name);
538 kill_client(source_p->from, source_p,
539 "%s (NICK from wrong direction (%s != %s))",
540 me.name, source_p->servptr->name, target_p->from->name);
541 SetKilled(source_p);
542 exit_client(source_p, &me, "USER server wrong direction");
543 return;
544 }
545
546 /* Increment our total user count here */
547 if (++Count.total > Count.max_tot)
548 Count.max_tot = Count.total;
549
550 SetClient(source_p);
551 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
552 add_user_host(source_p->username, source_p->host, 1);
553 SetUserHost(source_p);
554
555 introduce_client(source_p);
556 }
557
558 /* introduce_client()
559 *
560 * inputs - source_p
561 * output - NONE
562 * side effects - This common function introduces a client to the rest
563 * of the net, either from a local client connect or
564 * from a remote connect.
565 */
566 static void
567 introduce_client(struct Client *source_p)
568 {
569 dlink_node *server_node = NULL;
570 static char ubuf[12];
571
572 if (MyClient(source_p))
573 send_umode(source_p, source_p, 0, SEND_UMODES, ubuf);
574 else
575 send_umode(NULL, source_p, 0, SEND_UMODES, ubuf);
576
577 watch_check_hash(source_p, RPL_LOGON);
578
579 if (*ubuf == '\0')
580 {
581 ubuf[0] = '+';
582 ubuf[1] = '\0';
583 }
584
585 DLINK_FOREACH(server_node, serv_list.head)
586 {
587 struct Client *server = server_node->data;
588
589 if (server == source_p->from)
590 continue;
591
592 if (IsCapable(server, CAP_TS6) && HasID(source_p))
593 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
594 source_p->servptr->id,
595 source_p->name, source_p->hopcount+1,
596 (unsigned long)source_p->tsinfo,
597 ubuf, source_p->username, source_p->host,
598 (MyClient(source_p) && IsIPSpoof(source_p)) ?
599 "0" : source_p->sockhost, source_p->id, source_p->info);
600 else
601 sendto_one(server, "NICK %s %d %lu %s %s %s %s :%s",
602 source_p->name, source_p->hopcount+1,
603 (unsigned long)source_p->tsinfo,
604 ubuf, source_p->username, source_p->host,
605 source_p->servptr->name, source_p->info);
606 }
607 }
608
609 /* valid_hostname()
610 *
611 * Inputs - pointer to hostname
612 * Output - 1 if valid, 0 if not
613 * Side effects - check hostname for validity
614 *
615 * NOTE: this doesn't allow a hostname to begin with a dot and
616 * will not allow more dots than chars.
617 */
618 int
619 valid_hostname(const char *hostname)
620 {
621 const char *p = hostname;
622
623 assert(p != NULL);
624
625 if (*p == '.' || *p == ':')
626 return 0;
627
628 for (; *p; ++p)
629 if (!IsHostChar(*p))
630 return 0;
631
632 return 1;
633 }
634
635 /* valid_username()
636 *
637 * Inputs - pointer to user
638 * Output - 1 if valid, 0 if not
639 * Side effects - check username for validity
640 *
641 * Absolutely always reject any '*' '!' '?' '@' in an user name
642 * reject any odd control characters names.
643 * Allow '.' in username to allow for "first.last"
644 * style of username
645 */
646 int
647 valid_username(const char *username)
648 {
649 int dots = 0;
650 const char *p = username;
651
652 assert(p != NULL);
653
654 if (*p == '~')
655 ++p;
656
657 /* reject usernames that don't start with an alphanum
658 * i.e. reject jokers who have '-@somehost' or '.@somehost'
659 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
660 */
661 if (!IsAlNum(*p))
662 return 0;
663
664 while (*++p)
665 {
666 if ((*p == '.') && ConfigFileEntry.dots_in_ident)
667 {
668 if (++dots > ConfigFileEntry.dots_in_ident)
669 return 0;
670 if (!IsUserChar(*(p + 1)))
671 return 0;
672 }
673 else if (!IsUserChar(*p))
674 return 0;
675 }
676
677 return 1;
678 }
679
680 /* report_and_set_user_flags()
681 *
682 * inputs - pointer to source_p
683 * - pointer to aconf for this user
684 * output - NONE
685 * side effects - Report to user any special flags
686 * they are getting, and set them.
687 */
688 static void
689 report_and_set_user_flags(struct Client *source_p, const struct AccessItem *aconf)
690 {
691 /* If this user is being spoofed, tell them so */
692 if (IsConfDoSpoofIp(aconf))
693 {
694 sendto_one(source_p,
695 ":%s NOTICE %s :*** Spoofing your IP. congrats.",
696 me.name, source_p->name);
697 }
698
699 /* If this user is in the exception class, Set it "E lined" */
700 if (IsConfExemptKline(aconf))
701 {
702 SetExemptKline(source_p);
703 sendto_one(source_p,
704 ":%s NOTICE %s :*** You are exempt from K/D/G lines. congrats.",
705 me.name, source_p->name);
706 }
707
708 /* The else here is to make sure that G line exempt users
709 * do not get noticed twice.
710 */
711 else if (IsConfExemptGline(aconf))
712 {
713 SetExemptGline(source_p);
714 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from G lines.",
715 me.name, source_p->name);
716 }
717
718 if (IsConfExemptResv(aconf))
719 {
720 SetExemptResv(source_p);
721 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from resvs.",
722 me.name, source_p->name);
723 }
724
725 /* If this user is exempt from user limits set it "F lined" */
726 if (IsConfExemptLimits(aconf))
727 {
728 SetExemptLimits(source_p);
729 sendto_one(source_p,
730 ":%s NOTICE %s :*** You are exempt from user limits. congrats.",
731 me.name,source_p->name);
732 }
733
734 /* If this user is exempt from idle time outs */
735 if (IsConfIdlelined(aconf))
736 {
737 SetIdlelined(source_p);
738 sendto_one(source_p,
739 ":%s NOTICE %s :*** You are exempt from idle limits. congrats.",
740 me.name, source_p->name);
741 }
742
743 if (IsConfCanFlood(aconf))
744 {
745 SetCanFlood(source_p);
746 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from flood "
747 "protection, aren't you fearsome.",
748 me.name, source_p->name);
749 }
750 }
751
752 /* change_simple_umode()
753 *
754 * this callback can be hooked to allow special handling of
755 * certain usermodes
756 */
757 static void *
758 change_simple_umode(va_list args)
759 {
760 struct Client *client_p;
761 struct Client *source_p;
762 int what;
763 unsigned int flag;
764
765 client_p = va_arg(args, struct Client *);
766 source_p = va_arg(args, struct Client *);
767 what = va_arg(args, int);
768 flag = va_arg(args, unsigned int);
769
770 if (what == MODE_ADD)
771 source_p->umodes |= flag;
772 else
773 source_p->umodes &= ~flag;
774
775 return NULL;
776 }
777
778 /* set_user_mode()
779 *
780 * added 15/10/91 By Darren Reed.
781 * parv[0] - sender
782 * parv[1] - username to change mode for
783 * parv[2] - modes to change
784 */
785 void
786 set_user_mode(struct Client *client_p, struct Client *source_p,
787 int parc, char *parv[])
788 {
789 unsigned int flag, setflags;
790 char **p, *m, buf[IRCD_BUFSIZE];
791 struct Client *target_p;
792 int what = MODE_ADD, badflag = 0, i;
793
794 assert(!(parc < 2));
795
796 if ((target_p = find_person(client_p, parv[1])) == NULL)
797 {
798 if (MyConnect(source_p))
799 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
800 me.name, source_p->name, parv[1]);
801 return;
802 }
803
804 if (IsServer(source_p))
805 {
806 sendto_realops_flags(UMODE_ALL, L_ADMIN, "*** Mode for User %s from %s",
807 parv[1], source_p->name);
808 return;
809 }
810
811 if (source_p != target_p)
812 {
813 sendto_one(source_p, form_str(ERR_USERSDONTMATCH),
814 me.name, source_p->name);
815 return;
816 }
817
818 if (parc < 3)
819 {
820 m = buf;
821 *m++ = '+';
822
823 for (i = 0; i < 128; i++)
824 if (source_p->umodes & user_modes[i])
825 *m++ = (char)i;
826 *m = '\0';
827
828 sendto_one(source_p, form_str(RPL_UMODEIS),
829 me.name, source_p->name, buf);
830 return;
831 }
832
833 execute_callback(entering_umode_cb, client_p, source_p);
834
835 /* find flags already set for user */
836 setflags = source_p->umodes;
837
838 /* parse mode change string(s) */
839 for (p = &parv[2]; p && *p; p++)
840 {
841 for (m = *p; *m; m++)
842 {
843 switch (*m)
844 {
845 case '+':
846 what = MODE_ADD;
847 break;
848 case '-':
849 what = MODE_DEL;
850 break;
851 case 'o':
852 if (what == MODE_ADD)
853 {
854 if (IsServer(client_p) && !IsOper(source_p))
855 {
856 ++Count.oper;
857 SetOper(source_p);
858 }
859 }
860 else
861 {
862 /* Only decrement the oper counts if an oper to begin with
863 * found by Pat Szuta, Perly , perly@xnet.com
864 */
865 if (!IsOper(source_p))
866 break;
867
868 ClearOper(source_p);
869 Count.oper--;
870
871 if (MyConnect(source_p))
872 {
873 dlink_node *dm;
874
875 detach_conf(source_p, OPER_TYPE);
876 ClearOperFlags(source_p);
877 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
878
879 if ((dm = dlinkFindDelete(&oper_list, source_p)) != NULL)
880 free_dlink_node(dm);
881 }
882 }
883
884 break;
885
886 /* we may not get these,
887 * but they shouldnt be in default
888 */
889 case ' ' :
890 case '\n':
891 case '\r':
892 case '\t':
893 break;
894
895 default:
896 if ((flag = user_modes[(unsigned char)*m]))
897 {
898 if (MyConnect(source_p) && !IsOper(source_p) &&
899 (ConfigFileEntry.oper_only_umodes & flag))
900 {
901 badflag = 1;
902 }
903 else
904 execute_callback(umode_cb, client_p, source_p, what, flag);
905 }
906 else
907 {
908 if (MyConnect(source_p))
909 badflag = 1;
910 }
911
912 break;
913 }
914 }
915 }
916
917 if (badflag)
918 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG),
919 me.name, source_p->name);
920
921 if ((source_p->umodes & UMODE_NCHANGE) && !IsOperN(source_p))
922 {
923 sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
924 me.name, source_p->name);
925 source_p->umodes &= ~UMODE_NCHANGE; /* only tcm's really need this */
926 }
927
928 if (MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
929 !IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
930 {
931 sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
932 me.name, source_p->name);
933 source_p->umodes &= ~UMODE_ADMIN;
934 }
935
936 if (!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
937 ++Count.invisi;
938 if ((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
939 --Count.invisi;
940
941 /*
942 * compare new flags with old flags and send string which
943 * will cause servers to update correctly.
944 */
945 send_umode_out(client_p, source_p, setflags);
946 }
947
948 /* send_umode()
949 * send the MODE string for user (user) to connection client_p
950 * -avalon
951 *
952 * inputs - client_p
953 * - source_p
954 * - int old
955 * - sendmask mask of modes to send
956 * - suplied umode_buf
957 * output - NONE
958 */
959 void
960 send_umode(struct Client *client_p, struct Client *source_p,
961 unsigned int old, unsigned int sendmask, char *umode_buf)
962 {
963 char *m = umode_buf;
964 int what = 0;
965 unsigned int i;
966 unsigned int flag;
967
968 /*
969 * build a string in umode_buf to represent the change in the user's
970 * mode between the new (source_p->umodes) and 'old'.
971 */
972 for (i = 0; i < 128; i++)
973 {
974 flag = user_modes[i];
975 if (!flag)
976 continue;
977
978 if (MyClient(source_p) && !(flag & sendmask))
979 continue;
980
981 if ((flag & old) && !(source_p->umodes & flag))
982 {
983 if (what == MODE_DEL)
984 *m++ = (char)i;
985 else
986 {
987 what = MODE_DEL;
988 *m++ = '-';
989 *m++ = (char)i;
990 }
991 }
992 else if (!(flag & old) && (source_p->umodes & flag))
993 {
994 if (what == MODE_ADD)
995 *m++ = (char)i;
996 else
997 {
998 what = MODE_ADD;
999 *m++ = '+';
1000 *m++ = (char)i;
1001 }
1002 }
1003 }
1004
1005 *m = '\0';
1006
1007 if (*umode_buf && client_p)
1008 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
1009 source_p->name, source_p->username,
1010 source_p->host, source_p->name, umode_buf);
1011 }
1012
1013 /* send_umode_out()
1014 *
1015 * inputs -
1016 * output - NONE
1017 * side effects - Only send ubuf out to servers that know about this client
1018 */
1019 void
1020 send_umode_out(struct Client *client_p, struct Client *source_p,
1021 unsigned int old)
1022 {
1023 char buf[IRCD_BUFSIZE] = { '\0' };
1024 dlink_node *ptr = NULL;
1025
1026 send_umode(NULL, source_p, old, IsOperHiddenAdmin(source_p) ?
1027 SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, buf);
1028
1029 if (buf[0])
1030 {
1031 DLINK_FOREACH(ptr, serv_list.head)
1032 {
1033 struct Client *target_p = ptr->data;
1034
1035 if ((target_p != client_p) && (target_p != source_p))
1036 sendto_one(target_p, ":%s MODE %s :%s",
1037 ID_or_name(source_p, target_p),
1038 ID_or_name(source_p, target_p), buf);
1039 }
1040 }
1041
1042 if (client_p && MyClient(client_p))
1043 send_umode(client_p, source_p, old, 0xffffffff, buf);
1044 }
1045
1046 /* user_welcome()
1047 *
1048 * inputs - client pointer to client to welcome
1049 * output - NONE
1050 * side effects -
1051 */
1052 static void
1053 user_welcome(struct Client *source_p)
1054 {
1055 #if defined(__TIME__) && defined(__DATE__)
1056 static const char built_date[] = __DATE__ " at " __TIME__;
1057 #else
1058 static const char built_date[] = "unknown";
1059 #endif
1060
1061 #ifdef HAVE_LIBCRYPTO
1062 if (source_p->localClient->fd.ssl != NULL)
1063 sendto_one(source_p, ":%s NOTICE %s :*** Connected securely via %s",
1064 me.name, source_p->name,
1065 ssl_get_cipher(source_p->localClient->fd.ssl));
1066 #endif
1067
1068 sendto_one(source_p, form_str(RPL_WELCOME), me.name, source_p->name,
1069 ServerInfo.network_name, source_p->name);
1070 sendto_one(source_p, form_str(RPL_YOURHOST), me.name, source_p->name,
1071 get_listener_name(source_p->localClient->listener), ircd_version);
1072 sendto_one(source_p, form_str(RPL_CREATED),
1073 me.name, source_p->name, built_date);
1074 sendto_one(source_p, form_str(RPL_MYINFO),
1075 me.name, source_p->name, me.name, ircd_version, umode_buffer);
1076 show_isupport(source_p);
1077
1078 if (source_p->id[0] != '\0')
1079 sendto_one(source_p, form_str(RPL_YOURID), me.name,
1080 source_p->name, source_p->id);
1081
1082 show_lusers(source_p);
1083
1084 if (ConfigFileEntry.short_motd)
1085 {
1086 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- motd was last changed at %s",
1087 me.name, source_p->name, ConfigFileEntry.motd.lastChangedDate);
1088 sendto_one(source_p,
1089 ":%s NOTICE %s :*** Notice -- Please read the motd if you haven't "
1090 "read it", me.name, source_p->name);
1091 sendto_one(source_p, form_str(RPL_MOTDSTART),
1092 me.name, source_p->name, me.name);
1093 sendto_one(source_p, form_str(RPL_MOTD),
1094 me.name, source_p->name,
1095 "*** This is the short motd ***");
1096 sendto_one(source_p, form_str(RPL_ENDOFMOTD),
1097 me.name, source_p->name);
1098 }
1099 else
1100 send_message_file(source_p, &ConfigFileEntry.motd);
1101 }
1102
1103 /* check_xline()
1104 *
1105 * inputs - pointer to client to test
1106 * outupt - 1 if exiting 0 if ok
1107 * side effects -
1108 */
1109 static int
1110 check_xline(struct Client *source_p)
1111 {
1112 struct ConfItem *conf = NULL;
1113 const char *reason = NULL;
1114
1115 if ((conf = find_matching_name_conf(XLINE_TYPE, source_p->info, NULL, NULL, 0)) ||
1116 (conf = find_matching_name_conf(RXLINE_TYPE, source_p->info, NULL, NULL, 0)))
1117 {
1118 struct MatchItem *reg = map_to_conf(conf);
1119
1120 ++reg->count;
1121
1122 if (reg->reason != NULL)
1123 reason = reg->reason;
1124 else
1125 reason = "No Reason";
1126
1127 sendto_realops_flags(UMODE_REJ, L_ALL,
1128 "X-line Rejecting [%s] [%s], user %s [%s]",
1129 source_p->info, reason,
1130 get_client_name(source_p, HIDE_IP),
1131 source_p->sockhost);
1132
1133 ++ServerStats.is_ref;
1134 if (REJECT_HOLD_TIME > 0)
1135 {
1136 sendto_one(source_p, ":%s NOTICE %s :Bad user info",
1137 me.name, source_p->name);
1138 source_p->localClient->reject_delay = CurrentTime + REJECT_HOLD_TIME;
1139 SetCaptured(source_p);
1140 }
1141 else
1142 exit_client(source_p, &me, "Bad user info");
1143 return 1;
1144 }
1145
1146 return 0;
1147 }
1148
1149 /* oper_up()
1150 *
1151 * inputs - pointer to given client to oper
1152 * output - NONE
1153 * side effects - Blindly opers up given source_p, using aconf info
1154 * all checks on passwords have already been done.
1155 * This could also be used by rsa oper routines.
1156 */
1157 void
1158 oper_up(struct Client *source_p)
1159 {
1160 unsigned int old = source_p->umodes;
1161 const char *operprivs = "";
1162 const struct AccessItem *oconf = NULL;
1163
1164 assert(source_p->localClient->confs.head);
1165 oconf = map_to_conf((source_p->localClient->confs.head)->data);
1166
1167 ++Count.oper;
1168 SetOper(source_p);
1169
1170 if (oconf->modes)
1171 source_p->umodes |= oconf->modes;
1172 else if (ConfigFileEntry.oper_umodes)
1173 source_p->umodes |= ConfigFileEntry.oper_umodes;
1174 else
1175 source_p->umodes |= (UMODE_SERVNOTICE|UMODE_OPERWALL|
1176 UMODE_WALLOP|UMODE_LOCOPS);
1177
1178 if (!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1179 ++Count.invisi;
1180 if ((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1181 --Count.invisi;
1182
1183 assert(dlinkFind(&oper_list, source_p) == NULL);
1184 dlinkAdd(source_p, make_dlink_node(), &oper_list);
1185
1186 operprivs = oper_privs_as_string(oconf->port);
1187
1188 SetOFlag(source_p, oconf->port);
1189
1190 if (IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p))
1191 source_p->umodes |= UMODE_ADMIN;
1192 if (!IsOperN(source_p))
1193 source_p->umodes &= ~UMODE_NCHANGE;
1194
1195 sendto_realops_flags(UMODE_ALL, L_ALL, "%s (%s@%s) is now an operator",
1196 source_p->name, source_p->username, source_p->host);
1197 send_umode_out(source_p, source_p, old);
1198 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1199 sendto_one(source_p, ":%s NOTICE %s :*** Oper privs are %s",
1200 me.name, source_p->name, operprivs);
1201 send_message_file(source_p, &ConfigFileEntry.opermotd);
1202 }
1203
1204 static char new_uid[TOTALSIDUID + 1]; /* allow for \0 */
1205
1206 int
1207 valid_sid(const char *sid)
1208 {
1209 if (strlen(sid) == IRC_MAXSID)
1210 if (IsDigit(*sid))
1211 if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
1212 return 1;
1213
1214 return 0;
1215 }
1216
1217 /*
1218 * init_uid()
1219 *
1220 * inputs - NONE
1221 * output - NONE
1222 * side effects - new_uid is filled in with server id portion (sid)
1223 * (first 3 bytes) or defaulted to 'A'.
1224 * Rest is filled in with 'A'
1225 */
1226 void
1227 init_uid(void)
1228 {
1229 int i;
1230
1231 memset(new_uid, 0, sizeof(new_uid));
1232
1233 if (!EmptyString(ServerInfo.sid))
1234 strlcpy(new_uid, ServerInfo.sid, sizeof(new_uid));
1235
1236 for (i = 0; i < IRC_MAXSID; ++i)
1237 if (new_uid[i] == '\0')
1238 new_uid[i] = 'A';
1239
1240 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1241 /* Yes nenolod, I have known it was off by one ever since I wrote it
1242 * But *JUST* for you, though, it really doesn't look as *pretty*
1243 * -Dianora
1244 */
1245 memcpy(new_uid + IRC_MAXSID, "AAAAA@", IRC_MAXUID);
1246
1247 entering_umode_cb = register_callback("entering_umode", NULL);
1248 umode_cb = register_callback("changing_umode", change_simple_umode);
1249 }
1250
1251 /*
1252 * add_one_to_uid
1253 *
1254 * inputs - index number into new_uid
1255 * output - NONE
1256 * side effects - new_uid is incremented by one
1257 * note this is a recursive function
1258 */
1259 static void
1260 add_one_to_uid(int i)
1261 {
1262 if (i != IRC_MAXSID) /* Not reached server SID portion yet? */
1263 {
1264 if (new_uid[i] == 'Z')
1265 new_uid[i] = '0';
1266 else if (new_uid[i] == '9')
1267 {
1268 new_uid[i] = 'A';
1269 add_one_to_uid(i-1);
1270 }
1271 else
1272 ++new_uid[i];
1273 }
1274 else
1275 {
1276 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1277 if (new_uid[i] == 'Z')
1278 memcpy(new_uid + IRC_MAXSID, "AAAAAA", IRC_MAXUID);
1279 else
1280 ++new_uid[i];
1281 }
1282 }
1283
1284 /*
1285 * uid_get
1286 *
1287 * inputs - struct Client *
1288 * output - new UID is returned to caller
1289 * side effects - new_uid is incremented by one.
1290 */
1291 static const char *
1292 uid_get(void)
1293 {
1294 add_one_to_uid(TOTALSIDUID - 1); /* index from 0 */
1295 return new_uid;
1296 }
1297
1298 /*
1299 * init_isupport()
1300 *
1301 * input - NONE
1302 * output - NONE
1303 * side effects - Must be called before isupport is enabled
1304 */
1305 void
1306 init_isupport(void)
1307 {
1308 isupportFile = init_MessageLine();
1309
1310 add_isupport("CALLERID", NULL, -1);
1311 add_isupport("CASEMAPPING", CASEMAP, -1);
1312 add_isupport("DEAF", "D", -1);
1313 add_isupport("KICKLEN", NULL, KICKLEN);
1314 add_isupport("MODES", NULL, MAXMODEPARAMS);
1315 add_isupport("NICKLEN", NULL, NICKLEN-1);
1316 #ifdef HALFOPS
1317 add_isupport("PREFIX", "(ohv)@%+", -1);
1318 add_isupport("STATUSMSG", "@%+", -1);
1319 #else
1320 add_isupport("PREFIX", "(ov)@+", -1);
1321 add_isupport("STATUSMSG", "@+", -1);
1322 #endif
1323 add_isupport("TOPICLEN", NULL, TOPICLEN);
1324 }
1325
1326 /*
1327 * add_isupport()
1328 *
1329 * input - name of supported function
1330 * - options if any
1331 * - number if any
1332 * output - NONE
1333 * side effects - Each supported item must call this when activated
1334 */
1335 void
1336 add_isupport(const char *name, const char *options, int n)
1337 {
1338 dlink_node *ptr;
1339 struct Isupport *support;
1340
1341 DLINK_FOREACH(ptr, support_list.head)
1342 {
1343 support = ptr->data;
1344 if (irccmp(support->name, name) == 0)
1345 {
1346 MyFree(support->name);
1347 MyFree(support->options);
1348 break;
1349 }
1350 }
1351
1352 if (ptr == NULL)
1353 {
1354 support = MyMalloc(sizeof(*support));
1355 dlinkAddTail(support, &support->node, &support_list);
1356 }
1357
1358 DupString(support->name, name);
1359 if (options != NULL)
1360 DupString(support->options, options);
1361 support->number = n;
1362
1363 rebuild_isupport_message_line();
1364 }
1365
1366 /*
1367 * delete_isupport()
1368 *
1369 * input - name of supported function
1370 * output - NONE
1371 * side effects - Each supported item must call this when deactivated
1372 */
1373 void
1374 delete_isupport(const char *name)
1375 {
1376 dlink_node *ptr;
1377 struct Isupport *support;
1378
1379 DLINK_FOREACH(ptr, support_list.head)
1380 {
1381 support = ptr->data;
1382 if (irccmp(support->name, name) == 0)
1383 {
1384 dlinkDelete(ptr, &support_list);
1385 MyFree(support->name);
1386 MyFree(support->options);
1387 MyFree(support);
1388 break;
1389 }
1390 }
1391
1392 rebuild_isupport_message_line();
1393 }
1394
1395 /*
1396 * rebuild_isupport_message_line
1397 *
1398 * input - NONE
1399 * output - NONE
1400 * side effects - Destroy the isupport MessageFile lines, and rebuild.
1401 */
1402 void
1403 rebuild_isupport_message_line(void)
1404 {
1405 char isupportbuffer[IRCD_BUFSIZE];
1406 char *p = isupportbuffer;
1407 dlink_node *ptr = NULL;
1408 int n = 0;
1409 int tokens = 0;
1410 size_t len = 0;
1411 size_t reserve = strlen(me.name) + HOSTLEN + strlen(form_str(RPL_ISUPPORT));
1412
1413 destroy_MessageLine(isupportFile);
1414
1415 DLINK_FOREACH(ptr, support_list.head)
1416 {
1417 struct Isupport *support = ptr->data;
1418
1419 p += (n = ircsprintf(p, "%s", support->name));
1420 len += n;
1421
1422 if (support->options != NULL)
1423 {
1424 p += (n = ircsprintf(p, "=%s", support->options));
1425 len += n;
1426 }
1427
1428 if (support->number > 0)
1429 {
1430 p += (n = ircsprintf(p, "=%d", support->number));
1431 len += n;
1432 }
1433
1434 *p++ = ' ';
1435 len++;
1436 *p = '\0';
1437
1438 if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1439 { /* arbritrary for now */
1440 if (*--p == ' ')
1441 *p = '\0';
1442
1443 addto_MessageLine(isupportFile, isupportbuffer);
1444 p = isupportbuffer;
1445 len = 0;
1446 n = tokens = 0;
1447 }
1448 }
1449
1450 if (len != 0)
1451 {
1452 if (*--p == ' ')
1453 *p = '\0';
1454 addto_MessageLine(isupportFile, isupportbuffer);
1455 }
1456 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision