/[svn]/ircd-hybrid-8/src/s_user.c
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Contents of /ircd-hybrid-8/src/s_user.c

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Revision 1175 - (show annotations)
Sun Aug 14 10:47:48 2011 UTC (8 years, 10 months ago) by michael
File MIME type: text/x-chdr
File size: 40395 byte(s)
- several fixes to services compatibility mode

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
58 struct Callback *entering_umode_cb = NULL;
59 struct Callback *umode_cb = NULL;
60
61 static char umode_buffer[IRCD_BUFSIZE];
62
63 static void user_welcome(struct Client *);
64 static void report_and_set_user_flags(struct Client *, const struct AccessItem *);
65 static int check_xline(struct Client *);
66 static void introduce_client(struct Client *);
67 static const char *uid_get(void);
68
69 /* Used for building up the isupport string,
70 * used with init_isupport, add_isupport, delete_isupport
71 */
72
73 struct Isupport
74 {
75 dlink_node node;
76 char *name;
77 char *options;
78 int number;
79 };
80
81 static dlink_list support_list = { NULL, NULL, 0 };
82 MessageFile *isupportFile;
83
84 /* memory is cheap. map 0-255 to equivalent mode */
85 unsigned int user_modes[256] =
86 {
87 /* 0x00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x0F */
88 /* 0x10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x1F */
89 /* 0x20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x2F */
90 /* 0x30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x3F */
91 0, /* @ */
92 0, /* A */
93 0, /* B */
94 UMODE_CCONN_FULL, /* C */
95 UMODE_DEAF, /* D */
96 0, /* E */
97 0, /* F */
98 UMODE_SOFTCALLERID, /* G */
99 0, /* H */
100 0, /* I */
101 0, /* J */
102 0, /* K */
103 0, /* L */
104 0, /* M */
105 0, /* N */
106 0, /* O */
107 0, /* P */
108 0, /* Q */
109 UMODE_REGONLY, /* R */
110 0, /* S */
111 0, /* T */
112 0, /* U */
113 0, /* V */
114 0, /* W */
115 0, /* X */
116 0, /* Y */
117 0, /* Z 0x5A */
118 0, 0, 0, 0, 0, /* 0x5F */
119 0, /* 0x60 */
120 UMODE_ADMIN, /* a */
121 UMODE_BOTS, /* b */
122 UMODE_CCONN, /* c */
123 UMODE_DEBUG, /* d */
124 0, /* e */
125 UMODE_FULL, /* f */
126 UMODE_CALLERID, /* g */
127 0, /* h */
128 UMODE_INVISIBLE, /* i */
129 UMODE_REJ, /* j */
130 UMODE_SKILL, /* k */
131 UMODE_LOCOPS, /* l */
132 0, /* m */
133 UMODE_NCHANGE, /* n */
134 UMODE_OPER, /* o */
135 0, /* p */
136 0, /* q */
137 UMODE_REGISTERED, /* r */
138 UMODE_SERVNOTICE, /* s */
139 0, /* t */
140 UMODE_UNAUTH, /* u */
141 0, /* v */
142 UMODE_WALLOP, /* w */
143 UMODE_EXTERNAL, /* x */
144 UMODE_SPY, /* y */
145 UMODE_OPERWALL, /* z 0x7A */
146 0,0,0,0,0, /* 0x7B - 0x7F */
147
148 /* 0x80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x8F */
149 /* 0x90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x9F */
150 /* 0xA0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xAF */
151 /* 0xB0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xBF */
152 /* 0xC0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xCF */
153 /* 0xD0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xDF */
154 /* 0xE0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xEF */
155 /* 0xF0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xFF */
156 };
157
158 void
159 assemble_umode_buffer(void)
160 {
161 unsigned int idx = 0;
162 char *umode_buffer_ptr = umode_buffer;
163
164 for (; idx < (sizeof(user_modes) / sizeof(user_modes[0])); ++idx)
165 if (user_modes[idx])
166 *umode_buffer_ptr++ = idx;
167
168 *umode_buffer_ptr = '\0';
169 }
170
171 /* show_lusers()
172 *
173 * inputs - pointer to client
174 * output - NONE
175 * side effects - display to client user counts etc.
176 */
177 void
178 show_lusers(struct Client *source_p)
179 {
180 const char *from, *to;
181
182 if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
183 {
184 from = me.id;
185 to = source_p->id;
186 }
187 else
188 {
189 from = me.name;
190 to = source_p->name;
191 }
192
193 if (!ConfigServerHide.hide_servers || IsOper(source_p))
194 sendto_one(source_p, form_str(RPL_LUSERCLIENT),
195 from, to, (Count.total-Count.invisi),
196 Count.invisi, dlink_list_length(&global_serv_list));
197 else
198 sendto_one(source_p, form_str(RPL_LUSERCLIENT), from, to,
199 (Count.total-Count.invisi), Count.invisi, 1);
200
201 if (Count.oper > 0)
202 sendto_one(source_p, form_str(RPL_LUSEROP),
203 from, to, Count.oper);
204
205 if (dlink_list_length(&unknown_list) > 0)
206 sendto_one(source_p, form_str(RPL_LUSERUNKNOWN),
207 from, to, dlink_list_length(&unknown_list));
208
209 if (dlink_list_length(&global_channel_list) > 0)
210 sendto_one(source_p, form_str(RPL_LUSERCHANNELS),
211 from, to, dlink_list_length(&global_channel_list));
212
213 if (!ConfigServerHide.hide_servers || IsOper(source_p))
214 {
215 sendto_one(source_p, form_str(RPL_LUSERME),
216 from, to, Count.local, Count.myserver);
217 sendto_one(source_p, form_str(RPL_LOCALUSERS),
218 from, to, Count.local, Count.max_loc,
219 Count.local, Count.max_loc);
220 }
221 else
222 {
223 sendto_one(source_p, form_str(RPL_LUSERME),
224 from, to, Count.total, 0);
225 sendto_one(source_p, form_str(RPL_LOCALUSERS),
226 from, to, Count.total, Count.max_tot,
227 Count.total, Count.max_tot);
228 }
229
230 sendto_one(source_p, form_str(RPL_GLOBALUSERS),
231 from, to, Count.total, Count.max_tot,
232 Count.total, Count.max_tot);
233
234 if (!ConfigServerHide.hide_servers || IsOper(source_p))
235 sendto_one(source_p, form_str(RPL_STATSCONN), from, to,
236 Count.max_loc_con, Count.max_loc_cli, Count.totalrestartcount);
237
238 if (Count.local > Count.max_loc_cli)
239 Count.max_loc_cli = Count.local;
240
241 if ((Count.local + Count.myserver) > Count.max_loc_con)
242 Count.max_loc_con = Count.local + Count.myserver;
243 }
244
245 /* show_isupport()
246 *
247 * inputs - pointer to client
248 * output - NONE
249 * side effects - display to client what we support (for them)
250 */
251 void
252 show_isupport(struct Client *source_p)
253 {
254 send_message_file(source_p, isupportFile);
255 }
256
257 /*
258 ** register_local_user
259 ** This function is called when both NICK and USER messages
260 ** have been accepted for the client, in whatever order. Only
261 ** after this, is the USER message propagated.
262 **
263 ** NICK's must be propagated at once when received, although
264 ** it would be better to delay them too until full info is
265 ** available. Doing it is not so simple though, would have
266 ** to implement the following:
267 **
268 ** (actually it has been implemented already for a while) -orabidoo
269 **
270 ** 1) user telnets in and gives only "NICK foobar" and waits
271 ** 2) another user far away logs in normally with the nick
272 ** "foobar" (quite legal, as this server didn't propagate
273 ** it).
274 ** 3) now this server gets nick "foobar" from outside, but
275 ** has alread the same defined locally. Current server
276 ** would just issue "KILL foobar" to clean out dups. But,
277 ** this is not fair. It should actually request another
278 ** nick from local user or kill him/her...
279 */
280 void
281 register_local_user(struct Client *source_p)
282 {
283 const char *id = NULL;
284 const struct AccessItem *aconf = NULL;
285 dlink_node *ptr = NULL;
286
287 assert(source_p != NULL);
288 assert(source_p == source_p->from);
289 assert(MyConnect(source_p));
290 assert(!source_p->localClient->registration);
291
292 ClearCap(source_p, CAP_TS6);
293
294 if (ConfigFileEntry.ping_cookie)
295 {
296 if (!IsPingSent(source_p) && source_p->localClient->random_ping == 0)
297 {
298 do
299 source_p->localClient->random_ping = genrand_int32();
300 while (!source_p->localClient->random_ping);
301
302 sendto_one(source_p, "PING :%u",
303 source_p->localClient->random_ping);
304 SetPingSent(source_p);
305 return;
306 }
307
308 if (!HasPingCookie(source_p))
309 return;
310 }
311
312 source_p->localClient->last = CurrentTime;
313 /* Straight up the maximum rate of flooding... */
314 source_p->localClient->allow_read = MAX_FLOOD_BURST;
315
316 if (!execute_callback(client_check_cb, source_p, source_p->username))
317 return;
318
319 if (valid_hostname(source_p->host) == 0)
320 {
321 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You have an illegal "
322 "character in your hostname", me.name, source_p->name);
323 strlcpy(source_p->host, source_p->sockhost,
324 sizeof(source_p->host));
325 }
326
327 ptr = source_p->localClient->confs.head;
328 aconf = map_to_conf(ptr->data);
329
330 if (!IsGotId(source_p))
331 {
332 char username[USERLEN + 1];
333 const char *p = username;
334 unsigned int i = 0;
335
336 if (IsNeedIdentd(aconf))
337 {
338 ++ServerStats.is_ref;
339 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You need to install "
340 "identd to use this server", me.name, source_p->name);
341 exit_client(source_p, &me, "Install identd");
342 return;
343 }
344
345 strlcpy(username, source_p->username, sizeof(username));
346
347 if (!IsNoTilde(aconf))
348 source_p->username[i++] = '~';
349
350 for (; *p && i < USERLEN; ++p)
351 if (*p != '[')
352 source_p->username[i++] = *p;
353
354 source_p->username[i] = '\0';
355 }
356
357 /* password check */
358 if (!EmptyString(aconf->passwd))
359 {
360 const char *pass = source_p->localClient->passwd;
361
362 if (!match_conf_password(pass, aconf))
363 {
364 ++ServerStats.is_ref;
365 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
366 me.name, source_p->name);
367 exit_client(source_p, &me, "Bad Password");
368 return;
369 }
370 }
371
372 /* don't free source_p->localClient->passwd here - it can be required
373 * by masked /stats I if there are auth{} blocks with need_password = no;
374 * --adx
375 */
376
377 /* report if user has &^>= etc. and set flags as needed in source_p */
378 report_and_set_user_flags(source_p, aconf);
379
380 if (IsDead(source_p))
381 return;
382
383 /* Limit clients -
384 * We want to be able to have servers and F-line clients
385 * connect, so save room for "buffer" connections.
386 * Smaller servers may want to decrease this, and it should
387 * probably be just a percentage of the MAXCLIENTS...
388 * -Taner
389 */
390 /* Except "F:" clients */
391 if ((Count.local >= ServerInfo.max_clients + MAX_BUFFER) ||
392 (Count.local >= ServerInfo.max_clients && !IsExemptLimits(source_p)))
393 {
394 sendto_realops_flags(UMODE_FULL, L_ALL,
395 "Too many clients, rejecting %s[%s].",
396 source_p->name, source_p->host);
397 ++ServerStats.is_ref;
398 exit_client(source_p, &me, "Sorry, server is full - try later");
399 return;
400 }
401
402 /* valid user name check */
403 if (valid_username(source_p->username) == 0)
404 {
405 char tmpstr2[IRCD_BUFSIZE];
406
407 sendto_realops_flags(UMODE_REJ, L_ALL, "Invalid username: %s (%s@%s)",
408 source_p->name, source_p->username, source_p->host);
409 ++ServerStats.is_ref;
410 snprintf(tmpstr2, sizeof(tmpstr2), "Invalid username [%s]",
411 source_p->username);
412 exit_client(source_p, &me, tmpstr2);
413 return;
414 }
415
416 if (check_xline(source_p))
417 return;
418
419 while (hash_find_id((id = uid_get())) != NULL)
420 ;
421
422 strlcpy(source_p->id, id, sizeof(source_p->id));
423 hash_add_id(source_p);
424
425 sendto_realops_flags(UMODE_CCONN, L_ALL,
426 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
427 source_p->name, source_p->username, source_p->host,
428 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
429 "255.255.255.255" : source_p->sockhost,
430 get_client_class(source_p),
431 source_p->info, source_p->id);
432
433 sendto_realops_flags(UMODE_CCONN_FULL, L_ALL,
434 "CLICONN %s %s %s %s %s %s %s 0 %s",
435 source_p->name, source_p->username, source_p->host,
436 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
437 "255.255.255.255" : source_p->sockhost,
438 get_client_class(source_p),
439 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
440 "<hidden>" : source_p->localClient->client_host,
441 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
442 "<hidden>" : source_p->localClient->client_server,
443 source_p->info);
444
445
446 if (ConfigFileEntry.invisible_on_connect)
447 {
448 source_p->umodes |= UMODE_INVISIBLE;
449 ++Count.invisi;
450 }
451
452 if ((++Count.local) > Count.max_loc)
453 {
454 Count.max_loc = Count.local;
455
456 if (!(Count.max_loc % 10))
457 sendto_realops_flags(UMODE_ALL, L_ALL, "New Max Local Clients: %d",
458 Count.max_loc);
459 }
460
461 /* Increment our total user count here */
462 if (++Count.total > Count.max_tot)
463 Count.max_tot = Count.total;
464 ++Count.totalrestartcount;
465
466 assert(source_p->servptr == &me);
467 SetClient(source_p);
468 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
469
470 source_p->localClient->allow_read = MAX_FLOOD_BURST;
471
472 assert(dlinkFind(&unknown_list, source_p));
473
474 dlink_move_node(&source_p->localClient->lclient_node,
475 &unknown_list, &local_client_list);
476
477 user_welcome(source_p);
478 add_user_host(source_p->username, source_p->host, 0);
479 SetUserHost(source_p);
480
481 introduce_client(source_p);
482 }
483
484 /* register_remote_user()
485 *
486 * inputs - source_p remote or directly connected client
487 * - username to register as
488 * - host name to register as
489 * - server name
490 * - realname (gecos)
491 * output - NONE
492 * side effects - This function is called when a remote client
493 * is introduced by a server.
494 */
495 void
496 register_remote_user(struct Client *source_p,
497 const char *username, const char *host, const char *server,
498 const char *realname)
499 {
500 struct Client *target_p = NULL;
501
502 assert(source_p != NULL);
503 assert(source_p->username != username);
504
505 strlcpy(source_p->host, host, sizeof(source_p->host));
506 strlcpy(source_p->username, username, sizeof(source_p->username));
507
508 /*
509 * coming from another server, take the servers word for it
510 */
511 source_p->servptr = hash_find_server(server);
512
513 /* Super GhostDetect:
514 * If we can't find the server the user is supposed to be on,
515 * then simply blow the user away. -Taner
516 */
517 if (source_p->servptr == NULL)
518 {
519 sendto_realops_flags(UMODE_ALL, L_ALL,
520 "No server %s for user %s[%s@%s] from %s",
521 server, source_p->name, source_p->username,
522 source_p->host, source_p->from->name);
523 kill_client(source_p->from, source_p, "%s (Server doesn't exist)", me.name);
524
525 SetKilled(source_p);
526 exit_client(source_p, &me, "Ghosted Client");
527 return;
528 }
529
530 if ((target_p = source_p->servptr) && target_p->from != source_p->from)
531 {
532 sendto_realops_flags(UMODE_DEBUG, L_ALL,
533 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
534 source_p->from->name, source_p->name, source_p->username,
535 source_p->host, source_p->servptr->name,
536 target_p->name, target_p->from->name);
537 kill_client(source_p->from, source_p,
538 "%s (NICK from wrong direction (%s != %s))",
539 me.name, source_p->servptr->name, target_p->from->name);
540 SetKilled(source_p);
541 exit_client(source_p, &me, "USER server wrong direction");
542 return;
543 }
544
545 /*
546 * If the nick has been introduced by a services server,
547 * make it a service as well.
548 */
549 if (IsService(source_p->servptr))
550 SetService(source_p);
551
552 /* Increment our total user count here */
553 if (++Count.total > Count.max_tot)
554 Count.max_tot = Count.total;
555
556 SetClient(source_p);
557 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
558 add_user_host(source_p->username, source_p->host, 1);
559 SetUserHost(source_p);
560
561 introduce_client(source_p);
562 }
563
564 /* introduce_client()
565 *
566 * inputs - source_p
567 * output - NONE
568 * side effects - This common function introduces a client to the rest
569 * of the net, either from a local client connect or
570 * from a remote connect.
571 */
572 static void
573 introduce_client(struct Client *source_p)
574 {
575 dlink_node *server_node = NULL;
576 static char ubuf[12];
577
578 if (MyClient(source_p))
579 send_umode(source_p, source_p, 0, SEND_UMODES, ubuf);
580 else
581 send_umode(NULL, source_p, 0, SEND_UMODES, ubuf);
582
583 watch_check_hash(source_p, RPL_LOGON);
584
585 if (*ubuf == '\0')
586 {
587 ubuf[0] = '+';
588 ubuf[1] = '\0';
589 }
590
591 DLINK_FOREACH(server_node, serv_list.head)
592 {
593 struct Client *server = server_node->data;
594
595 if (server == source_p->from)
596 continue;
597
598 if (IsCapable(server, CAP_TS6) && HasID(source_p))
599 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
600 source_p->servptr->id,
601 source_p->name, source_p->hopcount+1,
602 (unsigned long)source_p->tsinfo,
603 ubuf, source_p->username, source_p->host,
604 (MyClient(source_p) && IsIPSpoof(source_p)) ?
605 "0" : source_p->sockhost, source_p->id, source_p->info);
606 else
607 sendto_one(server, "NICK %s %d %lu %s %s %s %s :%s",
608 source_p->name, source_p->hopcount+1,
609 (unsigned long)source_p->tsinfo,
610 ubuf, source_p->username, source_p->host,
611 source_p->servptr->name, source_p->info);
612 }
613 }
614
615 /* valid_hostname()
616 *
617 * Inputs - pointer to hostname
618 * Output - 1 if valid, 0 if not
619 * Side effects - check hostname for validity
620 *
621 * NOTE: this doesn't allow a hostname to begin with a dot and
622 * will not allow more dots than chars.
623 */
624 int
625 valid_hostname(const char *hostname)
626 {
627 const char *p = hostname;
628
629 assert(p != NULL);
630
631 if (*p == '.' || *p == ':')
632 return 0;
633
634 for (; *p; ++p)
635 if (!IsHostChar(*p))
636 return 0;
637
638 return 1;
639 }
640
641 /* valid_username()
642 *
643 * Inputs - pointer to user
644 * Output - 1 if valid, 0 if not
645 * Side effects - check username for validity
646 *
647 * Absolutely always reject any '*' '!' '?' '@' in an user name
648 * reject any odd control characters names.
649 * Allow '.' in username to allow for "first.last"
650 * style of username
651 */
652 int
653 valid_username(const char *username)
654 {
655 int dots = 0;
656 const char *p = username;
657
658 assert(p != NULL);
659
660 if (*p == '~')
661 ++p;
662
663 /* reject usernames that don't start with an alphanum
664 * i.e. reject jokers who have '-@somehost' or '.@somehost'
665 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
666 */
667 if (!IsAlNum(*p))
668 return 0;
669
670 while (*++p)
671 {
672 if ((*p == '.') && ConfigFileEntry.dots_in_ident)
673 {
674 if (++dots > ConfigFileEntry.dots_in_ident)
675 return 0;
676 if (!IsUserChar(*(p + 1)))
677 return 0;
678 }
679 else if (!IsUserChar(*p))
680 return 0;
681 }
682
683 return 1;
684 }
685
686 /* clean_nick_name()
687 *
688 * input - nickname
689 * - whether it's a local nick (1) or remote (0)
690 * output - none
691 * side effects - walks through the nickname, returning 0 if erroneous
692 */
693 int
694 valid_nickname(const char *nickname, const int local)
695 {
696 const char *p = nickname;
697 assert(nickname && *nickname);
698
699 /* nicks can't start with a digit or - or be 0 length */
700 /* This closer duplicates behaviour of hybrid-6 */
701 if (*p == '-' || (IsDigit(*p) && local) || *p == '\0')
702 return 0;
703
704 for (; *p; ++p)
705 if (!IsNickChar(*p))
706 return 0;
707
708 return p - nickname <= (NICKLEN - 1);
709 }
710
711 /* report_and_set_user_flags()
712 *
713 * inputs - pointer to source_p
714 * - pointer to aconf for this user
715 * output - NONE
716 * side effects - Report to user any special flags
717 * they are getting, and set them.
718 */
719 static void
720 report_and_set_user_flags(struct Client *source_p, const struct AccessItem *aconf)
721 {
722 /* If this user is being spoofed, tell them so */
723 if (IsConfDoSpoofIp(aconf))
724 {
725 sendto_one(source_p,
726 ":%s NOTICE %s :*** Spoofing your IP. congrats.",
727 me.name, source_p->name);
728 }
729
730 /* If this user is in the exception class, Set it "E lined" */
731 if (IsConfExemptKline(aconf))
732 {
733 SetExemptKline(source_p);
734 sendto_one(source_p,
735 ":%s NOTICE %s :*** You are exempt from K/D/G lines. congrats.",
736 me.name, source_p->name);
737 }
738
739 /* The else here is to make sure that G line exempt users
740 * do not get noticed twice.
741 */
742 else if (IsConfExemptGline(aconf))
743 {
744 SetExemptGline(source_p);
745 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from G lines.",
746 me.name, source_p->name);
747 }
748
749 if (IsConfExemptResv(aconf))
750 {
751 SetExemptResv(source_p);
752 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from resvs.",
753 me.name, source_p->name);
754 }
755
756 /* If this user is exempt from user limits set it "F lined" */
757 if (IsConfExemptLimits(aconf))
758 {
759 SetExemptLimits(source_p);
760 sendto_one(source_p,
761 ":%s NOTICE %s :*** You are exempt from user limits. congrats.",
762 me.name,source_p->name);
763 }
764
765 /* If this user is exempt from idle time outs */
766 if (IsConfIdlelined(aconf))
767 {
768 SetIdlelined(source_p);
769 sendto_one(source_p,
770 ":%s NOTICE %s :*** You are exempt from idle limits. congrats.",
771 me.name, source_p->name);
772 }
773
774 if (IsConfCanFlood(aconf))
775 {
776 SetCanFlood(source_p);
777 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from flood "
778 "protection, aren't you fearsome.",
779 me.name, source_p->name);
780 }
781 }
782
783 /* change_simple_umode()
784 *
785 * this callback can be hooked to allow special handling of
786 * certain usermodes
787 */
788 static void *
789 change_simple_umode(va_list args)
790 {
791 struct Client *client_p;
792 struct Client *source_p;
793 int what;
794 unsigned int flag;
795
796 client_p = va_arg(args, struct Client *);
797 source_p = va_arg(args, struct Client *);
798 what = va_arg(args, int);
799 flag = va_arg(args, unsigned int);
800
801 if (what == MODE_ADD)
802 source_p->umodes |= flag;
803 else
804 source_p->umodes &= ~flag;
805
806 return NULL;
807 }
808
809 /* set_user_mode()
810 *
811 * added 15/10/91 By Darren Reed.
812 * parv[0] - sender
813 * parv[1] - username to change mode for
814 * parv[2] - modes to change
815 */
816 void
817 set_user_mode(struct Client *client_p, struct Client *source_p,
818 int parc, char *parv[])
819 {
820 unsigned int flag, setflags;
821 char **p, *m, buf[IRCD_BUFSIZE];
822 struct Client *target_p;
823 int what = MODE_ADD, badflag = 0, i;
824
825 assert(!(parc < 2));
826
827 if ((target_p = find_person(client_p, parv[1])) == NULL)
828 {
829 if (MyConnect(source_p))
830 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
831 me.name, source_p->name, parv[1]);
832 return;
833 }
834
835 if (IsServer(source_p))
836 {
837 sendto_realops_flags(UMODE_ALL, L_ADMIN, "*** Mode for User %s from %s",
838 parv[1], source_p->name);
839 return;
840 }
841
842 if (source_p != target_p)
843 {
844 sendto_one(source_p, form_str(ERR_USERSDONTMATCH),
845 me.name, source_p->name);
846 return;
847 }
848
849 if (parc < 3)
850 {
851 m = buf;
852 *m++ = '+';
853
854 for (i = 0; i < 128; i++)
855 if (source_p->umodes & user_modes[i])
856 *m++ = (char)i;
857 *m = '\0';
858
859 sendto_one(source_p, form_str(RPL_UMODEIS),
860 me.name, source_p->name, buf);
861 return;
862 }
863
864 execute_callback(entering_umode_cb, client_p, source_p);
865
866 /* find flags already set for user */
867 setflags = source_p->umodes;
868
869 /* parse mode change string(s) */
870 for (p = &parv[2]; p && *p; p++)
871 {
872 for (m = *p; *m; m++)
873 {
874 switch (*m)
875 {
876 case '+':
877 what = MODE_ADD;
878 break;
879 case '-':
880 what = MODE_DEL;
881 break;
882 case 'o':
883 if (what == MODE_ADD)
884 {
885 if (IsServer(client_p) && !IsOper(source_p))
886 {
887 ++Count.oper;
888 SetOper(source_p);
889 }
890 }
891 else
892 {
893 /* Only decrement the oper counts if an oper to begin with
894 * found by Pat Szuta, Perly , perly@xnet.com
895 */
896 if (!IsOper(source_p))
897 break;
898
899 ClearOper(source_p);
900 Count.oper--;
901
902 if (MyConnect(source_p))
903 {
904 dlink_node *dm;
905
906 detach_conf(source_p, OPER_TYPE);
907 ClearOperFlags(source_p);
908 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
909
910 if ((dm = dlinkFindDelete(&oper_list, source_p)) != NULL)
911 free_dlink_node(dm);
912 }
913 }
914
915 break;
916
917 /* we may not get these,
918 * but they shouldnt be in default
919 */
920 case 'r':
921 case ' ' :
922 case '\n':
923 case '\r':
924 case '\t':
925 break;
926
927 default:
928 if ((flag = user_modes[(unsigned char)*m]))
929 {
930 if (MyConnect(source_p) && !IsOper(source_p) &&
931 (ConfigFileEntry.oper_only_umodes & flag))
932 {
933 badflag = 1;
934 }
935 else
936 execute_callback(umode_cb, client_p, source_p, what, flag);
937 }
938 else
939 {
940 if (MyConnect(source_p))
941 badflag = 1;
942 }
943
944 break;
945 }
946 }
947 }
948
949 if (badflag)
950 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG),
951 me.name, source_p->name);
952
953 if (HasUMode(source_p, UMODE_NCHANGE) && !IsOperN(source_p))
954 {
955 sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
956 me.name, source_p->name);
957 DelUMode(source_p, UMODE_NCHANGE); /* only tcm's really need this */
958 }
959
960 if (MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
961 !IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
962 {
963 sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
964 me.name, source_p->name);
965 source_p->umodes &= ~UMODE_ADMIN;
966 }
967
968 if (!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
969 ++Count.invisi;
970 if ((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
971 --Count.invisi;
972
973 /*
974 * compare new flags with old flags and send string which
975 * will cause servers to update correctly.
976 */
977 send_umode_out(client_p, source_p, setflags);
978 }
979
980 /* send_umode()
981 * send the MODE string for user (user) to connection client_p
982 * -avalon
983 *
984 * inputs - client_p
985 * - source_p
986 * - int old
987 * - sendmask mask of modes to send
988 * - suplied umode_buf
989 * output - NONE
990 */
991 void
992 send_umode(struct Client *client_p, struct Client *source_p,
993 unsigned int old, unsigned int sendmask, char *umode_buf)
994 {
995 char *m = umode_buf;
996 int what = 0;
997 unsigned int i;
998 unsigned int flag;
999
1000 /*
1001 * build a string in umode_buf to represent the change in the user's
1002 * mode between the new (source_p->umodes) and 'old'.
1003 */
1004 for (i = 0; i < 128; i++)
1005 {
1006 flag = user_modes[i];
1007 if (!flag)
1008 continue;
1009
1010 if (MyClient(source_p) && !(flag & sendmask))
1011 continue;
1012
1013 if ((flag & old) && !(source_p->umodes & flag))
1014 {
1015 if (what == MODE_DEL)
1016 *m++ = (char)i;
1017 else
1018 {
1019 what = MODE_DEL;
1020 *m++ = '-';
1021 *m++ = (char)i;
1022 }
1023 }
1024 else if (!(flag & old) && (source_p->umodes & flag))
1025 {
1026 if (what == MODE_ADD)
1027 *m++ = (char)i;
1028 else
1029 {
1030 what = MODE_ADD;
1031 *m++ = '+';
1032 *m++ = (char)i;
1033 }
1034 }
1035 }
1036
1037 *m = '\0';
1038
1039 if (*umode_buf && client_p)
1040 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
1041 source_p->name, source_p->username,
1042 source_p->host, source_p->name, umode_buf);
1043 }
1044
1045 /* send_umode_out()
1046 *
1047 * inputs -
1048 * output - NONE
1049 * side effects - Only send ubuf out to servers that know about this client
1050 */
1051 void
1052 send_umode_out(struct Client *client_p, struct Client *source_p,
1053 unsigned int old)
1054 {
1055 char buf[IRCD_BUFSIZE] = { '\0' };
1056 dlink_node *ptr = NULL;
1057
1058 send_umode(NULL, source_p, old, IsOperHiddenAdmin(source_p) ?
1059 SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, buf);
1060
1061 if (buf[0])
1062 {
1063 DLINK_FOREACH(ptr, serv_list.head)
1064 {
1065 struct Client *target_p = ptr->data;
1066
1067 if ((target_p != client_p) && (target_p != source_p))
1068 sendto_one(target_p, ":%s MODE %s :%s",
1069 ID_or_name(source_p, target_p),
1070 ID_or_name(source_p, target_p), buf);
1071 }
1072 }
1073
1074 if (client_p && MyClient(client_p))
1075 send_umode(client_p, source_p, old, 0xffffffff, buf);
1076 }
1077
1078 /* user_welcome()
1079 *
1080 * inputs - client pointer to client to welcome
1081 * output - NONE
1082 * side effects -
1083 */
1084 static void
1085 user_welcome(struct Client *source_p)
1086 {
1087 #if defined(__TIME__) && defined(__DATE__)
1088 static const char built_date[] = __DATE__ " at " __TIME__;
1089 #else
1090 static const char built_date[] = "unknown";
1091 #endif
1092
1093 #ifdef HAVE_LIBCRYPTO
1094 if (source_p->localClient->fd.ssl != NULL)
1095 sendto_one(source_p, ":%s NOTICE %s :*** Connected securely via %s",
1096 me.name, source_p->name,
1097 ssl_get_cipher(source_p->localClient->fd.ssl));
1098 #endif
1099
1100 sendto_one(source_p, form_str(RPL_WELCOME), me.name, source_p->name,
1101 ServerInfo.network_name, source_p->name);
1102 sendto_one(source_p, form_str(RPL_YOURHOST), me.name, source_p->name,
1103 get_listener_name(source_p->localClient->listener), ircd_version);
1104 sendto_one(source_p, form_str(RPL_CREATED),
1105 me.name, source_p->name, built_date);
1106 sendto_one(source_p, form_str(RPL_MYINFO),
1107 me.name, source_p->name, me.name, ircd_version, umode_buffer);
1108 show_isupport(source_p);
1109
1110 if (source_p->id[0] != '\0')
1111 sendto_one(source_p, form_str(RPL_YOURID), me.name,
1112 source_p->name, source_p->id);
1113
1114 show_lusers(source_p);
1115
1116 if (ConfigFileEntry.short_motd)
1117 {
1118 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- motd was last changed at %s",
1119 me.name, source_p->name, ConfigFileEntry.motd.lastChangedDate);
1120 sendto_one(source_p,
1121 ":%s NOTICE %s :*** Notice -- Please read the motd if you haven't "
1122 "read it", me.name, source_p->name);
1123 sendto_one(source_p, form_str(RPL_MOTDSTART),
1124 me.name, source_p->name, me.name);
1125 sendto_one(source_p, form_str(RPL_MOTD),
1126 me.name, source_p->name,
1127 "*** This is the short motd ***");
1128 sendto_one(source_p, form_str(RPL_ENDOFMOTD),
1129 me.name, source_p->name);
1130 }
1131 else
1132 send_message_file(source_p, &ConfigFileEntry.motd);
1133 }
1134
1135 /* check_xline()
1136 *
1137 * inputs - pointer to client to test
1138 * outupt - 1 if exiting 0 if ok
1139 * side effects -
1140 */
1141 static int
1142 check_xline(struct Client *source_p)
1143 {
1144 struct ConfItem *conf = NULL;
1145 const char *reason = NULL;
1146
1147 if ((conf = find_matching_name_conf(XLINE_TYPE, source_p->info, NULL, NULL, 0)) ||
1148 (conf = find_matching_name_conf(RXLINE_TYPE, source_p->info, NULL, NULL, 0)))
1149 {
1150 struct MatchItem *reg = map_to_conf(conf);
1151
1152 ++reg->count;
1153
1154 if (reg->reason != NULL)
1155 reason = reg->reason;
1156 else
1157 reason = "No Reason";
1158
1159 sendto_realops_flags(UMODE_REJ, L_ALL,
1160 "X-line Rejecting [%s] [%s], user %s [%s]",
1161 source_p->info, reason,
1162 get_client_name(source_p, HIDE_IP),
1163 source_p->sockhost);
1164
1165 ++ServerStats.is_ref;
1166 if (REJECT_HOLD_TIME > 0)
1167 {
1168 sendto_one(source_p, ":%s NOTICE %s :Bad user info",
1169 me.name, source_p->name);
1170 source_p->localClient->reject_delay = CurrentTime + REJECT_HOLD_TIME;
1171 SetCaptured(source_p);
1172 }
1173 else
1174 exit_client(source_p, &me, "Bad user info");
1175 return 1;
1176 }
1177
1178 return 0;
1179 }
1180
1181 /* oper_up()
1182 *
1183 * inputs - pointer to given client to oper
1184 * output - NONE
1185 * side effects - Blindly opers up given source_p, using aconf info
1186 * all checks on passwords have already been done.
1187 * This could also be used by rsa oper routines.
1188 */
1189 void
1190 oper_up(struct Client *source_p)
1191 {
1192 unsigned int old = source_p->umodes;
1193 const char *operprivs = "";
1194 const struct AccessItem *oconf = NULL;
1195
1196 assert(source_p->localClient->confs.head);
1197 oconf = map_to_conf((source_p->localClient->confs.head)->data);
1198
1199 ++Count.oper;
1200 SetOper(source_p);
1201
1202 if (oconf->modes)
1203 source_p->umodes |= oconf->modes;
1204 else if (ConfigFileEntry.oper_umodes)
1205 source_p->umodes |= ConfigFileEntry.oper_umodes;
1206 else
1207 source_p->umodes |= (UMODE_SERVNOTICE|UMODE_OPERWALL|
1208 UMODE_WALLOP|UMODE_LOCOPS);
1209
1210 if (!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1211 ++Count.invisi;
1212 if ((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1213 --Count.invisi;
1214
1215 assert(dlinkFind(&oper_list, source_p) == NULL);
1216 dlinkAdd(source_p, make_dlink_node(), &oper_list);
1217
1218 operprivs = oper_privs_as_string(oconf->port);
1219
1220 SetOFlag(source_p, oconf->port);
1221
1222 if (IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p))
1223 AddUMode(source_p, UMODE_ADMIN);
1224 if (!IsOperN(source_p))
1225 DelUMode(source_p, UMODE_NCHANGE);
1226
1227 sendto_realops_flags(UMODE_ALL, L_ALL, "%s (%s@%s) is now an operator",
1228 source_p->name, source_p->username, source_p->host);
1229 send_umode_out(source_p, source_p, old);
1230 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1231 sendto_one(source_p, ":%s NOTICE %s :*** Oper privs are %s",
1232 me.name, source_p->name, operprivs);
1233 send_message_file(source_p, &ConfigFileEntry.opermotd);
1234 }
1235
1236 static char new_uid[TOTALSIDUID + 1]; /* allow for \0 */
1237
1238 int
1239 valid_sid(const char *sid)
1240 {
1241 if (strlen(sid) == IRC_MAXSID)
1242 if (IsDigit(*sid))
1243 if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
1244 return 1;
1245
1246 return 0;
1247 }
1248
1249 /*
1250 * init_uid()
1251 *
1252 * inputs - NONE
1253 * output - NONE
1254 * side effects - new_uid is filled in with server id portion (sid)
1255 * (first 3 bytes) or defaulted to 'A'.
1256 * Rest is filled in with 'A'
1257 */
1258 void
1259 init_uid(void)
1260 {
1261 int i;
1262
1263 memset(new_uid, 0, sizeof(new_uid));
1264
1265 if (!EmptyString(ServerInfo.sid))
1266 strlcpy(new_uid, ServerInfo.sid, sizeof(new_uid));
1267
1268 for (i = 0; i < IRC_MAXSID; ++i)
1269 if (new_uid[i] == '\0')
1270 new_uid[i] = 'A';
1271
1272 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1273 /* Yes nenolod, I have known it was off by one ever since I wrote it
1274 * But *JUST* for you, though, it really doesn't look as *pretty*
1275 * -Dianora
1276 */
1277 memcpy(new_uid + IRC_MAXSID, "AAAAA@", IRC_MAXUID);
1278
1279 entering_umode_cb = register_callback("entering_umode", NULL);
1280 umode_cb = register_callback("changing_umode", change_simple_umode);
1281 }
1282
1283 /*
1284 * add_one_to_uid
1285 *
1286 * inputs - index number into new_uid
1287 * output - NONE
1288 * side effects - new_uid is incremented by one
1289 * note this is a recursive function
1290 */
1291 static void
1292 add_one_to_uid(int i)
1293 {
1294 if (i != IRC_MAXSID) /* Not reached server SID portion yet? */
1295 {
1296 if (new_uid[i] == 'Z')
1297 new_uid[i] = '0';
1298 else if (new_uid[i] == '9')
1299 {
1300 new_uid[i] = 'A';
1301 add_one_to_uid(i-1);
1302 }
1303 else
1304 ++new_uid[i];
1305 }
1306 else
1307 {
1308 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1309 if (new_uid[i] == 'Z')
1310 memcpy(new_uid + IRC_MAXSID, "AAAAAA", IRC_MAXUID);
1311 else
1312 ++new_uid[i];
1313 }
1314 }
1315
1316 /*
1317 * uid_get
1318 *
1319 * inputs - struct Client *
1320 * output - new UID is returned to caller
1321 * side effects - new_uid is incremented by one.
1322 */
1323 static const char *
1324 uid_get(void)
1325 {
1326 add_one_to_uid(TOTALSIDUID - 1); /* index from 0 */
1327 return new_uid;
1328 }
1329
1330 /*
1331 * init_isupport()
1332 *
1333 * input - NONE
1334 * output - NONE
1335 * side effects - Must be called before isupport is enabled
1336 */
1337 void
1338 init_isupport(void)
1339 {
1340 isupportFile = init_MessageLine();
1341
1342 add_isupport("CALLERID", NULL, -1);
1343 add_isupport("CASEMAPPING", CASEMAP, -1);
1344 add_isupport("DEAF", "D", -1);
1345 add_isupport("KICKLEN", NULL, KICKLEN);
1346 add_isupport("MODES", NULL, MAXMODEPARAMS);
1347 add_isupport("NICKLEN", NULL, NICKLEN-1);
1348 #ifdef HALFOPS
1349 add_isupport("PREFIX", "(ohv)@%+", -1);
1350 add_isupport("STATUSMSG", "@%+", -1);
1351 #else
1352 add_isupport("PREFIX", "(ov)@+", -1);
1353 add_isupport("STATUSMSG", "@+", -1);
1354 #endif
1355 add_isupport("TOPICLEN", NULL, TOPICLEN);
1356 }
1357
1358 /*
1359 * add_isupport()
1360 *
1361 * input - name of supported function
1362 * - options if any
1363 * - number if any
1364 * output - NONE
1365 * side effects - Each supported item must call this when activated
1366 */
1367 void
1368 add_isupport(const char *name, const char *options, int n)
1369 {
1370 dlink_node *ptr;
1371 struct Isupport *support;
1372
1373 DLINK_FOREACH(ptr, support_list.head)
1374 {
1375 support = ptr->data;
1376 if (irccmp(support->name, name) == 0)
1377 {
1378 MyFree(support->name);
1379 MyFree(support->options);
1380 break;
1381 }
1382 }
1383
1384 if (ptr == NULL)
1385 {
1386 support = MyMalloc(sizeof(*support));
1387 dlinkAddTail(support, &support->node, &support_list);
1388 }
1389
1390 DupString(support->name, name);
1391 if (options != NULL)
1392 DupString(support->options, options);
1393 support->number = n;
1394
1395 rebuild_isupport_message_line();
1396 }
1397
1398 /*
1399 * delete_isupport()
1400 *
1401 * input - name of supported function
1402 * output - NONE
1403 * side effects - Each supported item must call this when deactivated
1404 */
1405 void
1406 delete_isupport(const char *name)
1407 {
1408 dlink_node *ptr;
1409 struct Isupport *support;
1410
1411 DLINK_FOREACH(ptr, support_list.head)
1412 {
1413 support = ptr->data;
1414 if (irccmp(support->name, name) == 0)
1415 {
1416 dlinkDelete(ptr, &support_list);
1417 MyFree(support->name);
1418 MyFree(support->options);
1419 MyFree(support);
1420 break;
1421 }
1422 }
1423
1424 rebuild_isupport_message_line();
1425 }
1426
1427 /*
1428 * rebuild_isupport_message_line
1429 *
1430 * input - NONE
1431 * output - NONE
1432 * side effects - Destroy the isupport MessageFile lines, and rebuild.
1433 */
1434 void
1435 rebuild_isupport_message_line(void)
1436 {
1437 char isupportbuffer[IRCD_BUFSIZE];
1438 char *p = isupportbuffer;
1439 dlink_node *ptr = NULL;
1440 int n = 0;
1441 int tokens = 0;
1442 size_t len = 0;
1443 size_t reserve = strlen(me.name) + HOSTLEN + strlen(form_str(RPL_ISUPPORT));
1444
1445 destroy_MessageLine(isupportFile);
1446
1447 DLINK_FOREACH(ptr, support_list.head)
1448 {
1449 struct Isupport *support = ptr->data;
1450
1451 p += (n = ircsprintf(p, "%s", support->name));
1452 len += n;
1453
1454 if (support->options != NULL)
1455 {
1456 p += (n = ircsprintf(p, "=%s", support->options));
1457 len += n;
1458 }
1459
1460 if (support->number > 0)
1461 {
1462 p += (n = ircsprintf(p, "=%d", support->number));
1463 len += n;
1464 }
1465
1466 *p++ = ' ';
1467 len++;
1468 *p = '\0';
1469
1470 if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1471 { /* arbritrary for now */
1472 if (*--p == ' ')
1473 *p = '\0';
1474
1475 addto_MessageLine(isupportFile, isupportbuffer);
1476 p = isupportbuffer;
1477 len = 0;
1478 n = tokens = 0;
1479 }
1480 }
1481
1482 if (len != 0)
1483 {
1484 if (*--p == ' ')
1485 *p = '\0';
1486 addto_MessageLine(isupportFile, isupportbuffer);
1487 }
1488 }

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svn:keywords Id Revision

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