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root/svn/ircd-hybrid/branches/8.2.x/src/user.c
Revision: 3238
Committed: Sun Mar 30 13:44:07 2014 UTC (10 years ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid/trunk/src/s_user.c
File size: 38521 byte(s)
Log Message:
- s_user.c:send_umode_out(): removed unused variable

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 *
4 * Copyright (c) 1997-2014 ircd-hybrid development team
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19 * USA
20 */
21
22 /*! \file s_user.c
23 * \brief User related functions.
24 * \version $Id$
25 */
26
27 #include "stdinc.h"
28 #include "list.h"
29 #include "s_user.h"
30 #include "s_misc.h"
31 #include "channel.h"
32 #include "channel_mode.h"
33 #include "client.h"
34 #include "hash.h"
35 #include "irc_string.h"
36 #include "ircd.h"
37 #include "listener.h"
38 #include "motd.h"
39 #include "numeric.h"
40 #include "conf.h"
41 #include "log.h"
42 #include "s_serv.h"
43 #include "send.h"
44 #include "supported.h"
45 #include "memory.h"
46 #include "packet.h"
47 #include "rng_mt.h"
48 #include "userhost.h"
49 #include "s_misc.h"
50 #include "parse.h"
51 #include "watch.h"
52
53 static char umode_buffer[IRCD_BUFSIZE];
54
55 static void user_welcome(struct Client *);
56 static void report_and_set_user_flags(struct Client *, const struct MaskItem *);
57 static int check_xline(struct Client *);
58 static void introduce_client(struct Client *);
59 static const char *uid_get(void);
60
61 /* Used for building up the isupport string,
62 * used with init_isupport, add_isupport, delete_isupport
63 */
64
65 struct Isupport
66 {
67 dlink_node node;
68 char *name;
69 char *options;
70 int number;
71 };
72
73 static dlink_list support_list;
74 static dlink_list support_list_lines;
75
76 /* memory is cheap. map 0-255 to equivalent mode */
77 const unsigned int user_modes[256] =
78 {
79 /* 0x00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x0F */
80 /* 0x10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x1F */
81 /* 0x20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x2F */
82 /* 0x30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x3F */
83 0, /* @ */
84 0, /* A */
85 0, /* B */
86 0, /* C */
87 UMODE_DEAF, /* D */
88 0, /* E */
89 UMODE_FARCONNECT, /* F */
90 UMODE_SOFTCALLERID, /* G */
91 UMODE_HIDDEN, /* H */
92 0, /* I */
93 0, /* J */
94 0, /* K */
95 0, /* L */
96 0, /* M */
97 0, /* N */
98 0, /* O */
99 0, /* P */
100 0, /* Q */
101 UMODE_REGONLY, /* R */
102 UMODE_SSL, /* S */
103 0, /* T */
104 0, /* U */
105 0, /* V */
106 UMODE_WEBIRC, /* W */
107 0, /* X */
108 0, /* Y */
109 0, /* Z 0x5A */
110 0, 0, 0, 0, 0, /* 0x5F */
111 0, /* 0x60 */
112 UMODE_ADMIN, /* a */
113 UMODE_BOTS, /* b */
114 UMODE_CCONN, /* c */
115 UMODE_DEBUG, /* d */
116 UMODE_EXTERNAL, /* e */
117 UMODE_FULL, /* f */
118 UMODE_CALLERID, /* g */
119 0, /* h */
120 UMODE_INVISIBLE, /* i */
121 UMODE_REJ, /* j */
122 UMODE_SKILL, /* k */
123 UMODE_LOCOPS, /* l */
124 0, /* m */
125 UMODE_NCHANGE, /* n */
126 UMODE_OPER, /* o */
127 0, /* p */
128 0, /* q */
129 UMODE_REGISTERED, /* r */
130 UMODE_SERVNOTICE, /* s */
131 0, /* t */
132 UMODE_UNAUTH, /* u */
133 0, /* v */
134 UMODE_WALLOP, /* w */
135 UMODE_HIDDENHOST, /* x */
136 UMODE_SPY, /* y */
137 UMODE_OPERWALL, /* z 0x7A */
138 0,0,0,0,0, /* 0x7B - 0x7F */
139
140 /* 0x80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x8F */
141 /* 0x90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x9F */
142 /* 0xA0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xAF */
143 /* 0xB0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xBF */
144 /* 0xC0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xCF */
145 /* 0xD0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xDF */
146 /* 0xE0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xEF */
147 /* 0xF0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xFF */
148 };
149
150 void
151 assemble_umode_buffer(void)
152 {
153 unsigned int idx = 0;
154 char *umode_buffer_ptr = umode_buffer;
155
156 for (; idx < (sizeof(user_modes) / sizeof(user_modes[0])); ++idx)
157 if (user_modes[idx])
158 *umode_buffer_ptr++ = idx;
159
160 *umode_buffer_ptr = '\0';
161 }
162
163 /* show_lusers()
164 *
165 * inputs - pointer to client
166 * output - NONE
167 * side effects - display to client user counts etc.
168 */
169 void
170 show_lusers(struct Client *source_p)
171 {
172 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
173 sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT, (Count.total-Count.invisi),
174 Count.invisi, dlink_list_length(&global_serv_list));
175 else
176 sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT,
177 (Count.total-Count.invisi), Count.invisi, 1);
178
179 if (Count.oper > 0)
180 sendto_one_numeric(source_p, &me, RPL_LUSEROP, Count.oper);
181
182 if (dlink_list_length(&unknown_list) > 0)
183 sendto_one_numeric(source_p, &me, RPL_LUSERUNKNOWN, dlink_list_length(&unknown_list));
184
185 if (dlink_list_length(&global_channel_list) > 0)
186 sendto_one_numeric(source_p, &me, RPL_LUSERCHANNELS, dlink_list_length(&global_channel_list));
187
188 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
189 {
190 sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.local, Count.myserver);
191 sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.local, Count.max_loc);
192 }
193 else
194 {
195 sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.total, 0);
196 sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.total, Count.max_tot);
197 }
198
199 sendto_one_numeric(source_p, &me, RPL_GLOBALUSERS, Count.total, Count.max_tot);
200
201 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
202 sendto_one_numeric(source_p, &me, RPL_STATSCONN, Count.max_loc_con,
203 Count.max_loc_cli, Count.totalrestartcount);
204
205 if (Count.local > Count.max_loc_cli)
206 Count.max_loc_cli = Count.local;
207
208 if ((Count.local + Count.myserver) > Count.max_loc_con)
209 Count.max_loc_con = Count.local + Count.myserver;
210 }
211
212 /* show_isupport()
213 *
214 * inputs - pointer to client
215 * output - NONE
216 * side effects - display to client what we support (for them)
217 */
218 void
219 show_isupport(struct Client *source_p)
220 {
221 const dlink_node *ptr = NULL;
222
223 DLINK_FOREACH(ptr, support_list_lines.head)
224 sendto_one_numeric(source_p, &me, RPL_ISUPPORT, ptr->data);
225 }
226
227 /*
228 ** register_local_user
229 ** This function is called when both NICK and USER messages
230 ** have been accepted for the client, in whatever order. Only
231 ** after this, is the USER message propagated.
232 **
233 ** NICK's must be propagated at once when received, although
234 ** it would be better to delay them too until full info is
235 ** available. Doing it is not so simple though, would have
236 ** to implement the following:
237 **
238 ** (actually it has been implemented already for a while) -orabidoo
239 **
240 ** 1) user telnets in and gives only "NICK foobar" and waits
241 ** 2) another user far away logs in normally with the nick
242 ** "foobar" (quite legal, as this server didn't propagate
243 ** it).
244 ** 3) now this server gets nick "foobar" from outside, but
245 ** has alread the same defined locally. Current server
246 ** would just issue "KILL foobar" to clean out dups. But,
247 ** this is not fair. It should actually request another
248 ** nick from local user or kill him/her...
249 */
250 void
251 register_local_user(struct Client *source_p)
252 {
253 const char *id = NULL;
254 const struct MaskItem *conf = NULL;
255
256 assert(source_p == source_p->from);
257 assert(MyConnect(source_p));
258 assert(!source_p->localClient->registration);
259
260 ClearCap(source_p, CAP_TS6);
261
262 if (ConfigFileEntry.ping_cookie)
263 {
264 if (!IsPingSent(source_p) && !source_p->localClient->random_ping)
265 {
266 do
267 source_p->localClient->random_ping = genrand_int32();
268 while (!source_p->localClient->random_ping);
269
270 sendto_one(source_p, "PING :%u",
271 source_p->localClient->random_ping);
272 SetPingSent(source_p);
273 return;
274 }
275
276 if (!HasPingCookie(source_p))
277 return;
278 }
279
280 source_p->localClient->last_privmsg = CurrentTime;
281 /* Straight up the maximum rate of flooding... */
282 source_p->localClient->allow_read = MAX_FLOOD_BURST;
283
284 if (!check_client(source_p))
285 return;
286
287 if (!valid_hostname(source_p->host))
288 {
289 sendto_one_notice(source_p, &me, ":*** Notice -- You have an illegal "
290 "character in your hostname");
291 strlcpy(source_p->host, source_p->sockhost,
292 sizeof(source_p->host));
293 }
294
295 conf = source_p->localClient->confs.head->data;
296
297 if (!IsGotId(source_p))
298 {
299 char username[USERLEN + 1] = "";
300 const char *p = username;
301 unsigned int i = 0;
302
303 if (IsNeedIdentd(conf))
304 {
305 ++ServerStats.is_ref;
306 sendto_one_notice(source_p, &me, ":*** Notice -- You need to install "
307 "identd to use this server");
308 exit_client(source_p, "Install identd");
309 return;
310 }
311
312 strlcpy(username, source_p->username, sizeof(username));
313
314 if (!IsNoTilde(conf))
315 source_p->username[i++] = '~';
316
317 for (; *p && i < USERLEN; ++p)
318 if (*p != '[')
319 source_p->username[i++] = *p;
320
321 source_p->username[i] = '\0';
322 }
323
324 /* password check */
325 if (!EmptyString(conf->passwd))
326 {
327 const char *pass = source_p->localClient->passwd;
328
329 if (!match_conf_password(pass, conf))
330 {
331 ++ServerStats.is_ref;
332
333 sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH);
334 exit_client(source_p, "Bad Password");
335 return;
336 }
337 }
338
339 /* don't free source_p->localClient->passwd here - it can be required
340 * by masked /stats I if there are auth{} blocks with need_password = no;
341 * --adx
342 */
343
344 /* report if user has &^>= etc. and set flags as needed in source_p */
345 report_and_set_user_flags(source_p, conf);
346
347 if (IsDead(source_p))
348 return;
349
350 /* Limit clients -
351 * We want to be able to have servers and F-line clients
352 * connect, so save room for "buffer" connections.
353 * Smaller servers may want to decrease this, and it should
354 * probably be just a percentage of the MAXCLIENTS...
355 * -Taner
356 */
357 /* Except "F:" clients */
358 if ((Count.local >= ServerInfo.max_clients + MAX_BUFFER) ||
359 (Count.local >= ServerInfo.max_clients && !IsExemptLimits(source_p)))
360 {
361 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
362 "Too many clients, rejecting %s[%s].",
363 source_p->name, source_p->host);
364 ++ServerStats.is_ref;
365 exit_client(source_p, "Sorry, server is full - try later");
366 return;
367 }
368
369 /* valid user name check */
370 if (!valid_username(source_p->username, 1))
371 {
372 char tmpstr2[IRCD_BUFSIZE] = "";
373
374 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
375 "Invalid username: %s (%s@%s)",
376 source_p->name, source_p->username, source_p->host);
377 ++ServerStats.is_ref;
378 snprintf(tmpstr2, sizeof(tmpstr2), "Invalid username [%s]",
379 source_p->username);
380 exit_client(source_p, tmpstr2);
381 return;
382 }
383
384 if (check_xline(source_p))
385 return;
386
387 while (hash_find_id((id = uid_get())))
388 ;
389
390 strlcpy(source_p->id, id, sizeof(source_p->id));
391 hash_add_id(source_p);
392
393 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
394 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
395 source_p->name, source_p->username, source_p->host,
396 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
397 "255.255.255.255" : source_p->sockhost,
398 get_client_class(&source_p->localClient->confs),
399 source_p->info, source_p->id);
400
401 if (ConfigFileEntry.invisible_on_connect)
402 {
403 AddUMode(source_p, UMODE_INVISIBLE);
404 ++Count.invisi;
405 }
406
407 if (++Count.local > Count.max_loc)
408 {
409 Count.max_loc = Count.local;
410
411 if (!(Count.max_loc % 10))
412 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
413 "New Max Local Clients: %d",
414 Count.max_loc);
415 }
416
417 /* Increment our total user count here */
418 if (++Count.total > Count.max_tot)
419 Count.max_tot = Count.total;
420 ++Count.totalrestartcount;
421
422 assert(source_p->servptr == &me);
423 SetClient(source_p);
424 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
425
426 source_p->localClient->allow_read = MAX_FLOOD_BURST;
427
428 assert(dlinkFind(&unknown_list, source_p));
429
430 dlink_move_node(&source_p->localClient->lclient_node,
431 &unknown_list, &local_client_list);
432
433 user_welcome(source_p);
434 add_user_host(source_p->username, source_p->host, 0);
435 SetUserHost(source_p);
436
437 introduce_client(source_p);
438 }
439
440 /* register_remote_user()
441 *
442 * inputs - source_p remote or directly connected client
443 * - username to register as
444 * - host name to register as
445 * - server name
446 * output - NONE
447 * side effects - This function is called when a remote client
448 * is introduced by a server.
449 */
450 void
451 register_remote_user(struct Client *source_p, const char *username,
452 const char *host, const char *server)
453 {
454 struct Client *target_p = NULL;
455
456 assert(source_p->username != username);
457
458 strlcpy(source_p->host, host, sizeof(source_p->host));
459 strlcpy(source_p->username, username, sizeof(source_p->username));
460
461 /*
462 * coming from another server, take the servers word for it
463 */
464 source_p->servptr = hash_find_server(server);
465
466 /*
467 * Super GhostDetect:
468 * If we can't find the server the user is supposed to be on,
469 * then simply blow the user away. -Taner
470 */
471 if (source_p->servptr == NULL)
472 {
473 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
474 "No server %s for user %s[%s@%s] from %s",
475 server, source_p->name, source_p->username,
476 source_p->host, source_p->from->name);
477 sendto_one(source_p->from,
478 ":%s KILL %s :%s (Ghosted, server %s doesn't exist)",
479 me.id, source_p->id, me.name, server);
480
481 AddFlag(source_p, FLAGS_KILLED);
482 exit_client(source_p, "Ghosted Client");
483 return;
484 }
485
486 if ((target_p = source_p->servptr) && target_p->from != source_p->from)
487 {
488 sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
489 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
490 source_p->from->name, source_p->name, source_p->username,
491 source_p->host, source_p->servptr->name,
492 target_p->name, target_p->from->name);
493 sendto_one(source_p->from,
494 ":%s KILL %s :%s (NICK from wrong direction (%s != %s))",
495 me.id, source_p->id, me.name, source_p->servptr->name,
496 target_p->from->name);
497
498 AddFlag(source_p, FLAGS_KILLED);
499 exit_client(source_p, "USER server wrong direction");
500 return;
501 }
502
503 /*
504 * If the nick has been introduced by a services server,
505 * make it a service as well.
506 */
507 if (HasFlag(source_p->servptr, FLAGS_SERVICE))
508 AddFlag(source_p, FLAGS_SERVICE);
509
510 /* Increment our total user count here */
511 if (++Count.total > Count.max_tot)
512 Count.max_tot = Count.total;
513
514 SetClient(source_p);
515 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
516 add_user_host(source_p->username, source_p->host, 1);
517 SetUserHost(source_p);
518
519 if (HasFlag(source_p->servptr, FLAGS_EOB))
520 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
521 "Client connecting at %s: %s (%s@%s) [%s] <%s>",
522 source_p->servptr->name,
523 source_p->name, source_p->username, source_p->host,
524 source_p->info, source_p->id);
525
526 introduce_client(source_p);
527 }
528
529 /* introduce_client()
530 *
531 * inputs - source_p
532 * output - NONE
533 * side effects - This common function introduces a client to the rest
534 * of the net, either from a local client connect or
535 * from a remote connect.
536 */
537 static void
538 introduce_client(struct Client *source_p)
539 {
540 dlink_node *ptr = NULL;
541 char ubuf[IRCD_BUFSIZE] = "";
542
543 if (MyClient(source_p))
544 send_umode(source_p, source_p, 0, SEND_UMODES, ubuf);
545 else
546 send_umode(NULL, source_p, 0, SEND_UMODES, ubuf);
547
548 watch_check_hash(source_p, RPL_LOGON);
549
550 if (ubuf[0] == '\0')
551 {
552 ubuf[0] = '+';
553 ubuf[1] = '\0';
554 }
555
556 DLINK_FOREACH(ptr, serv_list.head)
557 {
558 struct Client *server = ptr->data;
559
560 if (server == source_p->from)
561 continue;
562
563 if (IsCapable(server, CAP_SVS))
564 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s %s :%s",
565 source_p->servptr->id,
566 source_p->name, source_p->hopcount+1,
567 (unsigned long)source_p->tsinfo,
568 ubuf, source_p->username, source_p->host,
569 (MyClient(source_p) && IsIPSpoof(source_p)) ?
570 "0" : source_p->sockhost, source_p->id,
571 source_p->svid,
572 source_p->info);
573 else
574 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
575 source_p->servptr->id,
576 source_p->name, source_p->hopcount+1,
577 (unsigned long)source_p->tsinfo,
578 ubuf, source_p->username, source_p->host,
579 (MyClient(source_p) && IsIPSpoof(source_p)) ?
580 "0" : source_p->sockhost, source_p->id, source_p->info);
581
582 if (!EmptyString(source_p->certfp))
583 sendto_one(server, ":%s CERTFP %s", source_p->id, source_p->certfp);
584 }
585 }
586
587 /* valid_hostname()
588 *
589 * Inputs - pointer to hostname
590 * Output - 1 if valid, 0 if not
591 * Side effects - check hostname for validity
592 *
593 * NOTE: this doesn't allow a hostname to begin with a dot and
594 * will not allow more dots than chars.
595 */
596 int
597 valid_hostname(const char *hostname)
598 {
599 const char *p = hostname;
600
601 assert(p);
602
603 if (EmptyString(p) || *p == '.' || *p == ':')
604 return 0;
605
606 for (; *p; ++p)
607 if (!IsHostChar(*p))
608 return 0;
609
610 return p - hostname <= HOSTLEN;
611 }
612
613 /* valid_username()
614 *
615 * Inputs - pointer to user
616 * Output - 1 if valid, 0 if not
617 * Side effects - check username for validity
618 *
619 * Absolutely always reject any '*' '!' '?' '@' in an user name
620 * reject any odd control characters names.
621 * Allow '.' in username to allow for "first.last"
622 * style of username
623 */
624 int
625 valid_username(const char *username, const int local)
626 {
627 int dots = 0;
628 const char *p = username;
629
630 assert(p);
631
632 if (*p == '~')
633 ++p;
634
635 /*
636 * Reject usernames that don't start with an alphanum
637 * i.e. reject jokers who have '-@somehost' or '.@somehost'
638 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
639 */
640 if (!IsAlNum(*p))
641 return 0;
642
643 if (local)
644 {
645 while (*++p)
646 {
647 if ((*p == '.') && ConfigFileEntry.dots_in_ident)
648 {
649 if (++dots > ConfigFileEntry.dots_in_ident)
650 return 0;
651 if (!IsUserChar(*(p + 1)))
652 return 0;
653 }
654 else if (!IsUserChar(*p))
655 return 0;
656 }
657 }
658 else
659 {
660 while (*++p)
661 if (!IsUserChar(*p))
662 return 0;
663 }
664
665 return p - username <= USERLEN;;
666 }
667
668 /* clean_nick_name()
669 *
670 * input - nickname
671 * - whether it's a local nick (1) or remote (0)
672 * output - none
673 * side effects - walks through the nickname, returning 0 if erroneous
674 */
675 int
676 valid_nickname(const char *nickname, const int local)
677 {
678 const char *p = nickname;
679 assert(nickname && *nickname);
680
681 assert(p);
682
683 /* nicks can't start with a digit or - or be 0 length */
684 /* This closer duplicates behaviour of hybrid-6 */
685 if (*p == '-' || (IsDigit(*p) && local) || *p == '\0')
686 return 0;
687
688 for (; *p; ++p)
689 if (!IsNickChar(*p))
690 return 0;
691
692 return p - nickname <= NICKLEN;
693 }
694
695 /* report_and_set_user_flags()
696 *
697 * inputs - pointer to source_p
698 * - pointer to conf for this user
699 * output - NONE
700 * side effects - Report to user any special flags
701 * they are getting, and set them.
702 */
703 static void
704 report_and_set_user_flags(struct Client *source_p, const struct MaskItem *conf)
705 {
706 /* If this user is being spoofed, tell them so */
707 if (IsConfDoSpoofIp(conf))
708 sendto_one_notice(source_p, &me, ":*** Spoofing your IP. Congrats.");
709
710 /* If this user is in the exception class, Set it "E lined" */
711 if (IsConfExemptKline(conf))
712 {
713 SetExemptKline(source_p);
714 sendto_one_notice(source_p, &me, ":*** You are exempt from K/D/G lines. Congrats.");
715 }
716
717 /*
718 * The else here is to make sure that G line exempt users
719 * do not get noticed twice.
720 */
721 else if (IsConfExemptGline(conf))
722 {
723 SetExemptGline(source_p);
724 sendto_one_notice(source_p, &me, ":*** You are exempt from G lines. Congrats.");
725 }
726
727 if (IsConfExemptResv(conf))
728 {
729 SetExemptResv(source_p);
730 sendto_one_notice(source_p, &me, ":*** You are exempt from resvs. Congrats.");
731 }
732
733 /* If this user is exempt from user limits set it "F lined" */
734 if (IsConfExemptLimits(conf))
735 {
736 SetExemptLimits(source_p);
737 sendto_one_notice(source_p, &me, ":*** You are exempt from user limits. Congrats.");
738 }
739
740 if (IsConfCanFlood(conf))
741 {
742 SetCanFlood(source_p);
743 sendto_one_notice(source_p, &me, ":*** You are exempt from flood "
744 "protection, aren't you fearsome.");
745 }
746 }
747
748 /* set_user_mode()
749 *
750 * added 15/10/91 By Darren Reed.
751 * parv[0] - command
752 * parv[1] - username to change mode for
753 * parv[2] - modes to change
754 */
755 void
756 set_user_mode(struct Client *source_p, const int parc, char *parv[])
757 {
758 unsigned int flag, setflags;
759 char **p, *m, buf[IRCD_BUFSIZE] = "";
760 struct Client *target_p;
761 int what = MODE_ADD, badflag = 0, i;
762
763 assert(!(parc < 2));
764
765 if ((target_p = find_person(source_p, parv[1])) == NULL)
766 {
767 if (MyConnect(source_p))
768 sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
769 return;
770 }
771
772 if (source_p != target_p)
773 {
774 sendto_one_numeric(source_p, &me, ERR_USERSDONTMATCH);
775 return;
776 }
777
778 if (parc < 3)
779 {
780 m = buf;
781 *m++ = '+';
782
783 for (i = 0; i < 128; ++i)
784 if (HasUMode(source_p, user_modes[i]))
785 *m++ = (char)i;
786 *m = '\0';
787
788 sendto_one_numeric(source_p, &me, RPL_UMODEIS, buf);
789 return;
790 }
791
792 /* find flags already set for user */
793 setflags = source_p->umodes;
794
795 /* parse mode change string(s) */
796 for (p = &parv[2]; p && *p; ++p)
797 {
798 for (m = *p; *m; ++m)
799 {
800 switch (*m)
801 {
802 case '+':
803 what = MODE_ADD;
804 break;
805 case '-':
806 what = MODE_DEL;
807 break;
808 case 'o':
809 if (what == MODE_ADD)
810 {
811 if (!MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER))
812 {
813 ++Count.oper;
814 SetOper(source_p);
815 }
816 }
817 else
818 {
819 if (!HasUMode(source_p, UMODE_OPER))
820 break;
821
822 ClearOper(source_p);
823 Count.oper--;
824
825 if (MyConnect(source_p))
826 {
827 dlink_node *ptr = NULL;
828
829 detach_conf(source_p, CONF_OPER);
830 ClrOFlag(source_p);
831 DelUMode(source_p, ConfigFileEntry.oper_only_umodes);
832
833 if ((ptr = dlinkFindDelete(&oper_list, source_p)))
834 free_dlink_node(ptr);
835 }
836 }
837
838 break;
839
840 case 'S': /* Only servers may set +S in a burst */
841 case 'W': /* Only servers may set +W in a burst */
842 case 'r': /* Only services may set +r */
843 case 'x': /* Only services may set +x */
844 break;
845
846 default:
847 if ((flag = user_modes[(unsigned char)*m]))
848 {
849 if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER) &&
850 (ConfigFileEntry.oper_only_umodes & flag))
851 badflag = 1;
852 else
853 {
854 if (what == MODE_ADD)
855 AddUMode(source_p, flag);
856 else
857 DelUMode(source_p, flag);
858 }
859 }
860 else if (MyConnect(source_p))
861 badflag = 1;
862
863 break;
864 }
865 }
866 }
867
868 if (badflag)
869 sendto_one_numeric(source_p, &me, ERR_UMODEUNKNOWNFLAG);
870
871 if (MyConnect(source_p) && HasUMode(source_p, UMODE_ADMIN) &&
872 !HasOFlag(source_p, OPER_FLAG_ADMIN))
873 {
874 sendto_one_notice(source_p, &me, ":*** You have no admin flag;");
875 DelUMode(source_p, UMODE_ADMIN);
876 }
877
878 if (!(setflags & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
879 ++Count.invisi;
880 if ((setflags & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
881 --Count.invisi;
882
883 /*
884 * compare new flags with old flags and send string which
885 * will cause servers to update correctly.
886 */
887 send_umode_out(source_p, source_p, setflags);
888 }
889
890 /* send_umode()
891 * send the MODE string for user (user) to connection client_p
892 * -avalon
893 *
894 * inputs - client_p
895 * - source_p
896 * - int old
897 * - sendmask mask of modes to send
898 * - suplied umode_buf
899 * output - NONE
900 */
901 void
902 send_umode(struct Client *client_p, struct Client *source_p,
903 unsigned int old, unsigned int sendmask, char *umode_buf)
904 {
905 char *m = umode_buf;
906 int what = 0;
907 unsigned int i;
908 unsigned int flag;
909
910 /*
911 * build a string in umode_buf to represent the change in the user's
912 * mode between the new (source_p->umodes) and 'old'.
913 */
914 for (i = 0; i < 128; ++i)
915 {
916 flag = user_modes[i];
917 if (!flag)
918 continue;
919
920 if (MyClient(source_p) && !(flag & sendmask))
921 continue;
922
923 if ((flag & old) && !HasUMode(source_p, flag))
924 {
925 if (what == MODE_DEL)
926 *m++ = (char)i;
927 else
928 {
929 what = MODE_DEL;
930 *m++ = '-';
931 *m++ = (char)i;
932 }
933 }
934 else if (!(flag & old) && HasUMode(source_p, flag))
935 {
936 if (what == MODE_ADD)
937 *m++ = (char)i;
938 else
939 {
940 what = MODE_ADD;
941 *m++ = '+';
942 *m++ = (char)i;
943 }
944 }
945 }
946
947 *m = '\0';
948
949 if (*umode_buf && client_p)
950 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
951 source_p->name, source_p->username,
952 source_p->host, source_p->name, umode_buf);
953 }
954
955 /* send_umode_out()
956 *
957 * inputs -
958 * output - NONE
959 * side effects - Only send ubuf out to servers that know about this client
960 */
961 void
962 send_umode_out(struct Client *client_p, struct Client *source_p,
963 unsigned int old)
964 {
965 char buf[IRCD_BUFSIZE] = "";
966
967 send_umode(NULL, source_p, old, SEND_UMODES, buf);
968
969 if (buf[0])
970 sendto_server(source_p, NOCAPS, NOCAPS, ":%s MODE %s :%s",
971 source_p->id, source_p->id, buf);
972
973 if (client_p && MyClient(client_p))
974 send_umode(client_p, source_p, old, 0xffffffff, buf);
975 }
976
977 void
978 user_set_hostmask(struct Client *target_p, const char *hostname, const int what)
979 {
980 dlink_node *ptr = NULL;
981
982 if (!strcmp(target_p->host, hostname))
983 return;
984
985 switch (what)
986 {
987 case MODE_ADD:
988 AddUMode(target_p, UMODE_HIDDENHOST);
989 AddFlag(target_p, FLAGS_IP_SPOOFING);
990 break;
991 case MODE_DEL:
992 DelUMode(target_p, UMODE_HIDDENHOST);
993
994 if (!HasFlag(target_p, FLAGS_AUTH_SPOOF))
995 DelFlag(target_p, FLAGS_IP_SPOOFING);
996 break;
997 default: return;
998 }
999
1000 if (ConfigFileEntry.cycle_on_host_change)
1001 sendto_common_channels_local(target_p, 0, 0, ":%s!%s@%s QUIT :Changing hostname",
1002 target_p->name, target_p->username, target_p->host);
1003
1004 if (IsUserHostIp(target_p))
1005 delete_user_host(target_p->username, target_p->host, !MyConnect(target_p));
1006
1007 strlcpy(target_p->host, hostname, sizeof(target_p->host));
1008
1009 add_user_host(target_p->username, target_p->host, !MyConnect(target_p));
1010 SetUserHost(target_p);
1011
1012 if (MyClient(target_p))
1013 {
1014 sendto_one_numeric(target_p, &me, RPL_NEWHOSTIS, target_p->host);
1015 clear_ban_cache_client(target_p);
1016 }
1017
1018 if (!ConfigFileEntry.cycle_on_host_change)
1019 return;
1020
1021 DLINK_FOREACH(ptr, target_p->channel.head)
1022 {
1023 char modebuf[4], nickbuf[NICKLEN * 3 + 3] = "";
1024 char *p = modebuf;
1025 int len = 0;
1026 const struct Membership *ms = ptr->data;
1027
1028 if (has_member_flags(ms, CHFL_CHANOP))
1029 {
1030 *p++ = 'o';
1031 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1032 }
1033
1034 if (has_member_flags(ms, CHFL_HALFOP))
1035 {
1036 *p++ = 'h';
1037 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1038 }
1039
1040 if (has_member_flags(ms, CHFL_VOICE))
1041 {
1042 *p++ = 'v';
1043 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1044 }
1045
1046 *p = '\0';
1047
1048 sendto_channel_local_butone(target_p, 0, 0, ms->chptr, ":%s!%s@%s JOIN :%s",
1049 target_p->name, target_p->username, target_p->host,
1050 ms->chptr->chname);
1051 if (nickbuf[0])
1052 sendto_channel_local_butone(target_p, 0, 0, ms->chptr, ":%s MODE %s +%s %s",
1053 target_p->servptr->name, ms->chptr->chname,
1054 modebuf, nickbuf);
1055
1056 }
1057
1058 if (target_p->away[0])
1059 sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY,
1060 ":%s!%s@%s AWAY :%s",
1061 target_p->name, target_p->username,
1062 target_p->host, target_p->away);
1063 }
1064
1065 /* user_welcome()
1066 *
1067 * inputs - client pointer to client to welcome
1068 * output - NONE
1069 * side effects -
1070 */
1071 static void
1072 user_welcome(struct Client *source_p)
1073 {
1074 #if defined(__TIME__) && defined(__DATE__)
1075 static const char built_date[] = __DATE__ " at " __TIME__;
1076 #else
1077 static const char built_date[] = "unknown";
1078 #endif
1079
1080 #ifdef HAVE_LIBCRYPTO
1081 if (HasFlag(source_p, FLAGS_SSL))
1082 {
1083 AddUMode(source_p, UMODE_SSL);
1084 sendto_one_notice(source_p, &me, ":*** Connected securely via %s",
1085 ssl_get_cipher(source_p->localClient->fd.ssl));
1086 }
1087 #endif
1088
1089 sendto_one_numeric(source_p, &me, RPL_WELCOME, ServerInfo.network_name,
1090 source_p->name);
1091 sendto_one_numeric(source_p, &me, RPL_YOURHOST,
1092 get_listener_name(source_p->localClient->listener), ircd_version);
1093 sendto_one_numeric(source_p, &me, RPL_CREATED, built_date);
1094 sendto_one_numeric(source_p, &me, RPL_MYINFO, me.name, ircd_version, umode_buffer);
1095 show_isupport(source_p);
1096
1097 if (source_p->id[0])
1098 sendto_one_numeric(source_p, &me, RPL_YOURID, source_p->id);
1099
1100 show_lusers(source_p);
1101 motd_signon(source_p);
1102 }
1103
1104 /* check_xline()
1105 *
1106 * inputs - pointer to client to test
1107 * outupt - 1 if exiting 0 if ok
1108 * side effects -
1109 */
1110 static int
1111 check_xline(struct Client *source_p)
1112 {
1113 struct MaskItem *conf = NULL;
1114 const char *reason = NULL;
1115
1116 if ((conf = find_matching_name_conf(CONF_XLINE, source_p->info, NULL, NULL, 0)))
1117 {
1118 ++conf->count;
1119
1120 if (conf->reason)
1121 reason = conf->reason;
1122 else
1123 reason = CONF_NOREASON;
1124
1125 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
1126 "X-line Rejecting [%s] [%s], user %s [%s]",
1127 source_p->info, reason,
1128 get_client_name(source_p, HIDE_IP),
1129 source_p->sockhost);
1130
1131 ++ServerStats.is_ref;
1132 exit_client(source_p, "Bad user info");
1133 return 1;
1134 }
1135
1136 return 0;
1137 }
1138
1139 /* oper_up()
1140 *
1141 * inputs - pointer to given client to oper
1142 * output - NONE
1143 * side effects - Blindly opers up given source_p, using conf info
1144 * all checks on passwords have already been done.
1145 * This could also be used by rsa oper routines.
1146 */
1147 void
1148 oper_up(struct Client *source_p)
1149 {
1150 const unsigned int old = source_p->umodes;
1151 const struct MaskItem *conf = source_p->localClient->confs.head->data;
1152
1153 assert(source_p->localClient->confs.head);
1154
1155 ++Count.oper;
1156 SetOper(source_p);
1157
1158 if (conf->modes)
1159 AddUMode(source_p, conf->modes);
1160 else if (ConfigFileEntry.oper_umodes)
1161 AddUMode(source_p, ConfigFileEntry.oper_umodes);
1162
1163 if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
1164 ++Count.invisi;
1165 if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
1166 --Count.invisi;
1167
1168 assert(dlinkFind(&oper_list, source_p) == NULL);
1169 dlinkAdd(source_p, make_dlink_node(), &oper_list);
1170
1171 AddOFlag(source_p, conf->port);
1172
1173 if (HasOFlag(source_p, OPER_FLAG_ADMIN))
1174 AddUMode(source_p, UMODE_ADMIN);
1175
1176 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, "%s is now an operator",
1177 get_oper_name(source_p));
1178 send_umode_out(source_p, source_p, old);
1179 sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
1180 }
1181
1182 static char new_uid[TOTALSIDUID + 1]; /* allow for \0 */
1183
1184 int
1185 valid_sid(const char *sid)
1186 {
1187 if (strlen(sid) == IRC_MAXSID)
1188 if (IsDigit(*sid))
1189 if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
1190 return 1;
1191
1192 return 0;
1193 }
1194
1195 /*
1196 * init_uid()
1197 *
1198 * inputs - NONE
1199 * output - NONE
1200 * side effects - new_uid is filled in with server id portion (sid)
1201 * (first 3 bytes) or defaulted to 'A'.
1202 * Rest is filled in with 'A'
1203 */
1204 void
1205 init_uid(void)
1206 {
1207 memset(new_uid, 0, sizeof(new_uid));
1208
1209 if (!EmptyString(ServerInfo.sid))
1210 strlcpy(new_uid, ServerInfo.sid, sizeof(new_uid));
1211
1212 for (unsigned int i = 0; i < IRC_MAXSID; ++i)
1213 if (new_uid[i] == '\0')
1214 new_uid[i] = 'A';
1215
1216 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1217 memcpy(new_uid + IRC_MAXSID, "AAAAA@", IRC_MAXUID);
1218 }
1219
1220 /*
1221 * add_one_to_uid
1222 *
1223 * inputs - index number into new_uid
1224 * output - NONE
1225 * side effects - new_uid is incremented by one
1226 * note this is a recursive function
1227 */
1228 static void
1229 add_one_to_uid(int i)
1230 {
1231 if (i != IRC_MAXSID) /* Not reached server SID portion yet? */
1232 {
1233 if (new_uid[i] == 'Z')
1234 new_uid[i] = '0';
1235 else if (new_uid[i] == '9')
1236 {
1237 new_uid[i] = 'A';
1238 add_one_to_uid(i-1);
1239 }
1240 else
1241 ++new_uid[i];
1242 }
1243 else
1244 {
1245 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1246 if (new_uid[i] == 'Z')
1247 memcpy(new_uid + IRC_MAXSID, "AAAAAA", IRC_MAXUID);
1248 else
1249 ++new_uid[i];
1250 }
1251 }
1252
1253 /*
1254 * uid_get
1255 *
1256 * inputs - struct Client *
1257 * output - new UID is returned to caller
1258 * side effects - new_uid is incremented by one.
1259 */
1260 static const char *
1261 uid_get(void)
1262 {
1263 add_one_to_uid(TOTALSIDUID - 1); /* index from 0 */
1264 return new_uid;
1265 }
1266
1267 /*
1268 * init_isupport()
1269 *
1270 * input - NONE
1271 * output - NONE
1272 * side effects - Must be called before isupport is enabled
1273 */
1274 void
1275 init_isupport(void)
1276 {
1277 add_isupport("CALLERID", NULL, -1);
1278 add_isupport("CASEMAPPING", CASEMAP, -1);
1279 add_isupport("DEAF", "D", -1);
1280 add_isupport("KICKLEN", NULL, KICKLEN);
1281 add_isupport("MODES", NULL, MAXMODEPARAMS);
1282 #ifdef HALFOPS
1283 add_isupport("PREFIX", "(ohv)@%+", -1);
1284 add_isupport("STATUSMSG", "@%+", -1);
1285 #else
1286 add_isupport("PREFIX", "(ov)@+", -1);
1287 add_isupport("STATUSMSG", "@+", -1);
1288 #endif
1289 add_isupport("EXCEPTS", "e", -1);
1290 add_isupport("INVEX", "I", -1);
1291 }
1292
1293 /*
1294 * add_isupport()
1295 *
1296 * input - name of supported function
1297 * - options if any
1298 * - number if any
1299 * output - NONE
1300 * side effects - Each supported item must call this when activated
1301 */
1302 void
1303 add_isupport(const char *name, const char *options, int n)
1304 {
1305 dlink_node *ptr;
1306 struct Isupport *support;
1307
1308 DLINK_FOREACH(ptr, support_list.head)
1309 {
1310 support = ptr->data;
1311 if (irccmp(support->name, name) == 0)
1312 {
1313 MyFree(support->name);
1314 MyFree(support->options);
1315 break;
1316 }
1317 }
1318
1319 if (ptr == NULL)
1320 {
1321 support = MyMalloc(sizeof(*support));
1322 dlinkAddTail(support, &support->node, &support_list);
1323 }
1324
1325 support->name = xstrdup(name);
1326 if (options != NULL)
1327 support->options = xstrdup(options);
1328 support->number = n;
1329
1330 rebuild_isupport_message_line();
1331 }
1332
1333 /*
1334 * delete_isupport()
1335 *
1336 * input - name of supported function
1337 * output - NONE
1338 * side effects - Each supported item must call this when deactivated
1339 */
1340 void
1341 delete_isupport(const char *name)
1342 {
1343 dlink_node *ptr;
1344 struct Isupport *support;
1345
1346 DLINK_FOREACH(ptr, support_list.head)
1347 {
1348 support = ptr->data;
1349 if (irccmp(support->name, name) == 0)
1350 {
1351 dlinkDelete(ptr, &support_list);
1352 MyFree(support->name);
1353 MyFree(support->options);
1354 MyFree(support);
1355 break;
1356 }
1357 }
1358
1359 rebuild_isupport_message_line();
1360 }
1361
1362 /*
1363 * rebuild_isupport_message_line
1364 *
1365 * input - NONE
1366 * output - NONE
1367 * side effects - Destroy the isupport MessageFile lines, and rebuild.
1368 */
1369 void
1370 rebuild_isupport_message_line(void)
1371 {
1372 char isupportbuffer[IRCD_BUFSIZE];
1373 char *p = isupportbuffer;
1374 dlink_node *ptr = NULL, *ptr_next = NULL;
1375 int n = 0;
1376 int tokens = 0;
1377 size_t len = 0;
1378 size_t reserve = strlen(me.name) + HOSTLEN + strlen(numeric_form(RPL_ISUPPORT));
1379
1380 DLINK_FOREACH_SAFE(ptr, ptr_next, support_list_lines.head)
1381 {
1382 dlinkDelete(ptr, &support_list_lines);
1383 MyFree(ptr->data);
1384 free_dlink_node(ptr);
1385 }
1386
1387 DLINK_FOREACH(ptr, support_list.head)
1388 {
1389 struct Isupport *support = ptr->data;
1390
1391 p += (n = sprintf(p, "%s", support->name));
1392 len += n;
1393
1394 if (support->options != NULL)
1395 {
1396 p += (n = sprintf(p, "=%s", support->options));
1397 len += n;
1398 }
1399
1400 if (support->number > 0)
1401 {
1402 p += (n = sprintf(p, "=%d", support->number));
1403 len += n;
1404 }
1405
1406 *p++ = ' ';
1407 len++;
1408 *p = '\0';
1409
1410 if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1411 { /* arbritrary for now */
1412 if (*--p == ' ')
1413 *p = '\0';
1414
1415 dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1416 p = isupportbuffer;
1417 len = 0;
1418 n = tokens = 0;
1419 }
1420 }
1421
1422 if (len != 0)
1423 {
1424 if (*--p == ' ')
1425 *p = '\0';
1426 dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1427 }
1428 }

Properties

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