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Contents of /ircd-hybrid/branches/8.1.x/src/s_user.c

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Revision 2956 - (show annotations)
Tue Jan 28 16:41:18 2014 UTC (6 years, 9 months ago) by michael
File MIME type: text/x-chdr
File size: 40942 byte(s)
- register_remote_user(): removed unused realname/gecos parameter

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 "fdlist.h"
35 #include "hash.h"
36 #include "irc_string.h"
37 #include "s_bsd.h"
38 #include "ircd.h"
39 #include "listener.h"
40 #include "motd.h"
41 #include "numeric.h"
42 #include "conf.h"
43 #include "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 "parse.h"
55 #include "watch.h"
56
57 static char umode_buffer[IRCD_BUFSIZE];
58
59 static void user_welcome(struct Client *);
60 static void report_and_set_user_flags(struct Client *, const struct MaskItem *);
61 static int check_xline(struct Client *);
62 static void introduce_client(struct Client *);
63 static const char *uid_get(void);
64
65 /* Used for building up the isupport string,
66 * used with init_isupport, add_isupport, delete_isupport
67 */
68
69 struct Isupport
70 {
71 dlink_node node;
72 char *name;
73 char *options;
74 int number;
75 };
76
77 static dlink_list support_list;
78 static dlink_list support_list_lines;
79
80 /* memory is cheap. map 0-255 to equivalent mode */
81 const unsigned int user_modes[256] =
82 {
83 /* 0x00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x0F */
84 /* 0x10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x1F */
85 /* 0x20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x2F */
86 /* 0x30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x3F */
87 0, /* @ */
88 0, /* A */
89 0, /* B */
90 0, /* C */
91 UMODE_DEAF, /* D */
92 0, /* E */
93 UMODE_FARCONNECT, /* F */
94 UMODE_SOFTCALLERID, /* G */
95 UMODE_HIDDEN, /* H */
96 0, /* I */
97 0, /* J */
98 0, /* K */
99 0, /* L */
100 0, /* M */
101 0, /* N */
102 0, /* O */
103 0, /* P */
104 0, /* Q */
105 UMODE_REGONLY, /* R */
106 UMODE_SSL, /* S */
107 0, /* T */
108 0, /* U */
109 0, /* V */
110 UMODE_WEBIRC, /* W */
111 0, /* X */
112 0, /* Y */
113 0, /* Z 0x5A */
114 0, 0, 0, 0, 0, /* 0x5F */
115 0, /* 0x60 */
116 UMODE_ADMIN, /* a */
117 UMODE_BOTS, /* b */
118 UMODE_CCONN, /* c */
119 UMODE_DEBUG, /* d */
120 UMODE_EXTERNAL, /* e */
121 UMODE_FULL, /* f */
122 UMODE_CALLERID, /* g */
123 0, /* h */
124 UMODE_INVISIBLE, /* i */
125 UMODE_REJ, /* j */
126 UMODE_SKILL, /* k */
127 UMODE_LOCOPS, /* l */
128 0, /* m */
129 UMODE_NCHANGE, /* n */
130 UMODE_OPER, /* o */
131 0, /* p */
132 0, /* q */
133 UMODE_REGISTERED, /* r */
134 UMODE_SERVNOTICE, /* s */
135 0, /* t */
136 UMODE_UNAUTH, /* u */
137 0, /* v */
138 UMODE_WALLOP, /* w */
139 UMODE_HIDDENHOST, /* x */
140 UMODE_SPY, /* y */
141 UMODE_OPERWALL, /* z 0x7A */
142 0,0,0,0,0, /* 0x7B - 0x7F */
143
144 /* 0x80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x8F */
145 /* 0x90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x9F */
146 /* 0xA0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xAF */
147 /* 0xB0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xBF */
148 /* 0xC0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xCF */
149 /* 0xD0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xDF */
150 /* 0xE0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xEF */
151 /* 0xF0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xFF */
152 };
153
154 void
155 assemble_umode_buffer(void)
156 {
157 unsigned int idx = 0;
158 char *umode_buffer_ptr = umode_buffer;
159
160 for (; idx < (sizeof(user_modes) / sizeof(user_modes[0])); ++idx)
161 if (user_modes[idx])
162 *umode_buffer_ptr++ = idx;
163
164 *umode_buffer_ptr = '\0';
165 }
166
167 /* show_lusers()
168 *
169 * inputs - pointer to client
170 * output - NONE
171 * side effects - display to client user counts etc.
172 */
173 void
174 show_lusers(struct Client *source_p)
175 {
176 const char *from, *to;
177
178 if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
179 {
180 from = me.id;
181 to = source_p->id;
182 }
183 else
184 {
185 from = me.name;
186 to = source_p->name;
187 }
188
189 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
190 sendto_one(source_p, form_str(RPL_LUSERCLIENT),
191 from, to, (Count.total-Count.invisi),
192 Count.invisi, dlink_list_length(&global_serv_list));
193 else
194 sendto_one(source_p, form_str(RPL_LUSERCLIENT), from, to,
195 (Count.total-Count.invisi), Count.invisi, 1);
196
197 if (Count.oper > 0)
198 sendto_one(source_p, form_str(RPL_LUSEROP),
199 from, to, Count.oper);
200
201 if (dlink_list_length(&unknown_list) > 0)
202 sendto_one(source_p, form_str(RPL_LUSERUNKNOWN),
203 from, to, dlink_list_length(&unknown_list));
204
205 if (dlink_list_length(&global_channel_list) > 0)
206 sendto_one(source_p, form_str(RPL_LUSERCHANNELS),
207 from, to, dlink_list_length(&global_channel_list));
208
209 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
210 {
211 sendto_one(source_p, form_str(RPL_LUSERME),
212 from, to, Count.local, Count.myserver);
213 sendto_one(source_p, form_str(RPL_LOCALUSERS),
214 from, to, Count.local, Count.max_loc);
215 }
216 else
217 {
218 sendto_one(source_p, form_str(RPL_LUSERME),
219 from, to, Count.total, 0);
220 sendto_one(source_p, form_str(RPL_LOCALUSERS),
221 from, to, Count.total, Count.max_tot);
222 }
223
224 sendto_one(source_p, form_str(RPL_GLOBALUSERS),
225 from, to, Count.total, Count.max_tot);
226
227 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
228 sendto_one(source_p, form_str(RPL_STATSCONN), from, to,
229 Count.max_loc_con, Count.max_loc_cli, Count.totalrestartcount);
230
231 if (Count.local > Count.max_loc_cli)
232 Count.max_loc_cli = Count.local;
233
234 if ((Count.local + Count.myserver) > Count.max_loc_con)
235 Count.max_loc_con = Count.local + Count.myserver;
236 }
237
238 /* show_isupport()
239 *
240 * inputs - pointer to client
241 * output - NONE
242 * side effects - display to client what we support (for them)
243 */
244 void
245 show_isupport(struct Client *source_p)
246 {
247 const dlink_node *ptr = NULL;
248
249 DLINK_FOREACH(ptr, support_list_lines.head)
250 sendto_one(source_p, form_str(RPL_ISUPPORT), me.name,
251 source_p->name, ptr->data);
252 }
253
254 /*
255 ** register_local_user
256 ** This function is called when both NICK and USER messages
257 ** have been accepted for the client, in whatever order. Only
258 ** after this, is the USER message propagated.
259 **
260 ** NICK's must be propagated at once when received, although
261 ** it would be better to delay them too until full info is
262 ** available. Doing it is not so simple though, would have
263 ** to implement the following:
264 **
265 ** (actually it has been implemented already for a while) -orabidoo
266 **
267 ** 1) user telnets in and gives only "NICK foobar" and waits
268 ** 2) another user far away logs in normally with the nick
269 ** "foobar" (quite legal, as this server didn't propagate
270 ** it).
271 ** 3) now this server gets nick "foobar" from outside, but
272 ** has alread the same defined locally. Current server
273 ** would just issue "KILL foobar" to clean out dups. But,
274 ** this is not fair. It should actually request another
275 ** nick from local user or kill him/her...
276 */
277 void
278 register_local_user(struct Client *source_p)
279 {
280 const char *id = NULL;
281 const struct MaskItem *conf = NULL;
282
283 assert(source_p != NULL);
284 assert(source_p == source_p->from);
285 assert(MyConnect(source_p));
286 assert(!source_p->localClient->registration);
287
288 ClearCap(source_p, CAP_TS6);
289
290 if (ConfigFileEntry.ping_cookie)
291 {
292 if (!IsPingSent(source_p) && !source_p->localClient->random_ping)
293 {
294 do
295 source_p->localClient->random_ping = genrand_int32();
296 while (!source_p->localClient->random_ping);
297
298 sendto_one(source_p, "PING :%u",
299 source_p->localClient->random_ping);
300 SetPingSent(source_p);
301 return;
302 }
303
304 if (!HasPingCookie(source_p))
305 return;
306 }
307
308 source_p->localClient->last_privmsg = CurrentTime;
309 /* Straight up the maximum rate of flooding... */
310 source_p->localClient->allow_read = MAX_FLOOD_BURST;
311
312 if (!check_client(source_p))
313 return;
314
315 if (!valid_hostname(source_p->host))
316 {
317 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You have an illegal "
318 "character in your hostname", me.name, source_p->name);
319 strlcpy(source_p->host, source_p->sockhost,
320 sizeof(source_p->host));
321 }
322
323 conf = source_p->localClient->confs.head->data;
324
325 if (!IsGotId(source_p))
326 {
327 char username[USERLEN + 1];
328 const char *p = username;
329 unsigned int i = 0;
330
331 if (IsNeedIdentd(conf))
332 {
333 ++ServerStats.is_ref;
334 sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You need to install "
335 "identd to use this server", me.name, source_p->name);
336 exit_client(source_p, &me, "Install identd");
337 return;
338 }
339
340 strlcpy(username, source_p->username, sizeof(username));
341
342 if (!IsNoTilde(conf))
343 source_p->username[i++] = '~';
344
345 for (; *p && i < USERLEN; ++p)
346 if (*p != '[')
347 source_p->username[i++] = *p;
348
349 source_p->username[i] = '\0';
350 }
351
352 /* password check */
353 if (!EmptyString(conf->passwd))
354 {
355 const char *pass = source_p->localClient->passwd;
356
357 if (!match_conf_password(pass, conf))
358 {
359 ++ServerStats.is_ref;
360 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
361 me.name, source_p->name);
362 exit_client(source_p, &me, "Bad Password");
363 return;
364 }
365 }
366
367 /* don't free source_p->localClient->passwd here - it can be required
368 * by masked /stats I if there are auth{} blocks with need_password = no;
369 * --adx
370 */
371
372 /* report if user has &^>= etc. and set flags as needed in source_p */
373 report_and_set_user_flags(source_p, conf);
374
375 if (IsDead(source_p))
376 return;
377
378 /* Limit clients -
379 * We want to be able to have servers and F-line clients
380 * connect, so save room for "buffer" connections.
381 * Smaller servers may want to decrease this, and it should
382 * probably be just a percentage of the MAXCLIENTS...
383 * -Taner
384 */
385 /* Except "F:" clients */
386 if ((Count.local >= ServerInfo.max_clients + MAX_BUFFER) ||
387 (Count.local >= ServerInfo.max_clients && !IsExemptLimits(source_p)))
388 {
389 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
390 "Too many clients, rejecting %s[%s].",
391 source_p->name, source_p->host);
392 ++ServerStats.is_ref;
393 exit_client(source_p, &me, "Sorry, server is full - try later");
394 return;
395 }
396
397 /* valid user name check */
398 if (!valid_username(source_p->username, 1))
399 {
400 char tmpstr2[IRCD_BUFSIZE];
401
402 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
403 "Invalid username: %s (%s@%s)",
404 source_p->name, source_p->username, source_p->host);
405 ++ServerStats.is_ref;
406 snprintf(tmpstr2, sizeof(tmpstr2), "Invalid username [%s]",
407 source_p->username);
408 exit_client(source_p, &me, tmpstr2);
409 return;
410 }
411
412 if (check_xline(source_p))
413 return;
414
415 while (hash_find_id((id = uid_get())) != NULL)
416 ;
417
418 strlcpy(source_p->id, id, sizeof(source_p->id));
419 hash_add_id(source_p);
420
421 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
422 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
423 source_p->name, source_p->username, source_p->host,
424 ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
425 "255.255.255.255" : source_p->sockhost,
426 get_client_class(&source_p->localClient->confs),
427 source_p->info, source_p->id);
428
429 if (ConfigFileEntry.invisible_on_connect)
430 {
431 AddUMode(source_p, UMODE_INVISIBLE);
432 ++Count.invisi;
433 }
434
435 if (++Count.local > Count.max_loc)
436 {
437 Count.max_loc = Count.local;
438
439 if (!(Count.max_loc % 10))
440 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
441 "New Max Local Clients: %d",
442 Count.max_loc);
443 }
444
445 /* Increment our total user count here */
446 if (++Count.total > Count.max_tot)
447 Count.max_tot = Count.total;
448 ++Count.totalrestartcount;
449
450 assert(source_p->servptr == &me);
451 SetClient(source_p);
452 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
453
454 source_p->localClient->allow_read = MAX_FLOOD_BURST;
455
456 assert(dlinkFind(&unknown_list, source_p));
457
458 dlink_move_node(&source_p->localClient->lclient_node,
459 &unknown_list, &local_client_list);
460
461 user_welcome(source_p);
462 add_user_host(source_p->username, source_p->host, 0);
463 SetUserHost(source_p);
464
465 introduce_client(source_p);
466 }
467
468 /* register_remote_user()
469 *
470 * inputs - source_p remote or directly connected client
471 * - username to register as
472 * - host name to register as
473 * - server name
474 * output - NONE
475 * side effects - This function is called when a remote client
476 * is introduced by a server.
477 */
478 void
479 register_remote_user(struct Client *source_p, const char *username,
480 const char *host, const char *server)
481 {
482 struct Client *target_p = NULL;
483
484 assert(source_p != NULL);
485 assert(source_p->username != username);
486
487 strlcpy(source_p->host, host, sizeof(source_p->host));
488 strlcpy(source_p->username, username, sizeof(source_p->username));
489
490 /*
491 * coming from another server, take the servers word for it
492 */
493 source_p->servptr = hash_find_server(server);
494
495 /*
496 * Super GhostDetect:
497 * If we can't find the server the user is supposed to be on,
498 * then simply blow the user away. -Taner
499 */
500 if (source_p->servptr == NULL)
501 {
502 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
503 "No server %s for user %s[%s@%s] from %s",
504 server, source_p->name, source_p->username,
505 source_p->host, source_p->from->name);
506 kill_client(source_p->from, source_p, "%s (Server doesn't exist)", me.name);
507
508 AddFlag(source_p, FLAGS_KILLED);
509 exit_client(source_p, &me, "Ghosted Client");
510 return;
511 }
512
513 if ((target_p = source_p->servptr) && target_p->from != source_p->from)
514 {
515 sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
516 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
517 source_p->from->name, source_p->name, source_p->username,
518 source_p->host, source_p->servptr->name,
519 target_p->name, target_p->from->name);
520 kill_client(source_p->from, source_p,
521 "%s (NICK from wrong direction (%s != %s))",
522 me.name, source_p->servptr->name, target_p->from->name);
523 AddFlag(source_p, FLAGS_KILLED);
524 exit_client(source_p, &me, "USER server wrong direction");
525 return;
526 }
527
528 /*
529 * If the nick has been introduced by a services server,
530 * make it a service as well.
531 */
532 if (HasFlag(source_p->servptr, FLAGS_SERVICE))
533 AddFlag(source_p, FLAGS_SERVICE);
534
535 /* Increment our total user count here */
536 if (++Count.total > Count.max_tot)
537 Count.max_tot = Count.total;
538
539 SetClient(source_p);
540 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
541 add_user_host(source_p->username, source_p->host, 1);
542 SetUserHost(source_p);
543
544 if (HasFlag(source_p->servptr, FLAGS_EOB))
545 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
546 "Client connecting at %s: %s (%s@%s) [%s] <%s>",
547 source_p->servptr->name,
548 source_p->name, source_p->username, source_p->host,
549 source_p->info, source_p->id);
550
551 introduce_client(source_p);
552 }
553
554 /* introduce_client()
555 *
556 * inputs - source_p
557 * output - NONE
558 * side effects - This common function introduces a client to the rest
559 * of the net, either from a local client connect or
560 * from a remote connect.
561 */
562 static void
563 introduce_client(struct Client *source_p)
564 {
565 dlink_node *server_node = NULL;
566 char ubuf[IRCD_BUFSIZE];
567
568 if (MyClient(source_p))
569 send_umode(source_p, source_p, 0, SEND_UMODES, ubuf);
570 else
571 send_umode(NULL, source_p, 0, SEND_UMODES, ubuf);
572
573 watch_check_hash(source_p, RPL_LOGON);
574
575 if (ubuf[0] == '\0')
576 {
577 ubuf[0] = '+';
578 ubuf[1] = '\0';
579 }
580
581 DLINK_FOREACH(server_node, serv_list.head)
582 {
583 struct Client *server = server_node->data;
584
585 if (server == source_p->from)
586 continue;
587
588 if (IsCapable(server, CAP_SVS))
589 {
590 if (IsCapable(server, CAP_TS6) && HasID(source_p))
591 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s %s :%s",
592 source_p->servptr->id,
593 source_p->name, source_p->hopcount+1,
594 (unsigned long)source_p->tsinfo,
595 ubuf, source_p->username, source_p->host,
596 (MyClient(source_p) && IsIPSpoof(source_p)) ?
597 "0" : source_p->sockhost, source_p->id,
598 source_p->svid,
599 source_p->info);
600 else
601 sendto_one(server, "NICK %s %d %lu %s %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->svid,
606 source_p->info);
607
608 }
609 else
610 {
611 if (IsCapable(server, CAP_TS6) && HasID(source_p))
612 sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
613 source_p->servptr->id,
614 source_p->name, source_p->hopcount+1,
615 (unsigned long)source_p->tsinfo,
616 ubuf, source_p->username, source_p->host,
617 (MyClient(source_p) && IsIPSpoof(source_p)) ?
618 "0" : source_p->sockhost, source_p->id, source_p->info);
619 else
620 sendto_one(server, "NICK %s %d %lu %s %s %s %s :%s",
621 source_p->name, source_p->hopcount+1,
622 (unsigned long)source_p->tsinfo,
623 ubuf, source_p->username, source_p->host,
624 source_p->servptr->name, source_p->info);
625 }
626
627 if (!EmptyString(source_p->certfp))
628 sendto_one(server, ":%s CERTFP %s", ID(source_p), source_p->certfp);
629 }
630 }
631
632 /* valid_hostname()
633 *
634 * Inputs - pointer to hostname
635 * Output - 1 if valid, 0 if not
636 * Side effects - check hostname for validity
637 *
638 * NOTE: this doesn't allow a hostname to begin with a dot and
639 * will not allow more dots than chars.
640 */
641 int
642 valid_hostname(const char *hostname)
643 {
644 const char *p = hostname;
645
646 assert(p != NULL);
647
648 if (EmptyString(p) || *p == '.' || *p == ':')
649 return 0;
650
651 for (; *p; ++p)
652 if (!IsHostChar(*p))
653 return 0;
654
655 return p - hostname <= HOSTLEN;
656 }
657
658 /* valid_username()
659 *
660 * Inputs - pointer to user
661 * Output - 1 if valid, 0 if not
662 * Side effects - check username for validity
663 *
664 * Absolutely always reject any '*' '!' '?' '@' in an user name
665 * reject any odd control characters names.
666 * Allow '.' in username to allow for "first.last"
667 * style of username
668 */
669 int
670 valid_username(const char *username, const int local)
671 {
672 int dots = 0;
673 const char *p = username;
674
675 assert(p != NULL);
676
677 if (*p == '~')
678 ++p;
679
680 /*
681 * Reject usernames that don't start with an alphanum
682 * i.e. reject jokers who have '-@somehost' or '.@somehost'
683 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
684 */
685 if (!IsAlNum(*p))
686 return 0;
687
688 if (local)
689 {
690 while (*++p)
691 {
692 if ((*p == '.') && ConfigFileEntry.dots_in_ident)
693 {
694 if (++dots > ConfigFileEntry.dots_in_ident)
695 return 0;
696 if (!IsUserChar(*(p + 1)))
697 return 0;
698 }
699 else if (!IsUserChar(*p))
700 return 0;
701 }
702 }
703 else
704 {
705 while (*++p)
706 if (!IsUserChar(*p))
707 return 0;
708 }
709
710 return p - username <= USERLEN;;
711 }
712
713 /* clean_nick_name()
714 *
715 * input - nickname
716 * - whether it's a local nick (1) or remote (0)
717 * output - none
718 * side effects - walks through the nickname, returning 0 if erroneous
719 */
720 int
721 valid_nickname(const char *nickname, const int local)
722 {
723 const char *p = nickname;
724 assert(nickname && *nickname);
725
726 /* nicks can't start with a digit or - or be 0 length */
727 /* This closer duplicates behaviour of hybrid-6 */
728 if (*p == '-' || (IsDigit(*p) && local) || *p == '\0')
729 return 0;
730
731 for (; *p; ++p)
732 if (!IsNickChar(*p))
733 return 0;
734
735 return p - nickname <= NICKLEN;
736 }
737
738 /* report_and_set_user_flags()
739 *
740 * inputs - pointer to source_p
741 * - pointer to conf for this user
742 * output - NONE
743 * side effects - Report to user any special flags
744 * they are getting, and set them.
745 */
746 static void
747 report_and_set_user_flags(struct Client *source_p, const struct MaskItem *conf)
748 {
749 /* If this user is being spoofed, tell them so */
750 if (IsConfDoSpoofIp(conf))
751 sendto_one(source_p,
752 ":%s NOTICE %s :*** Spoofing your IP. Congrats.",
753 me.name, source_p->name);
754
755 /* If this user is in the exception class, Set it "E lined" */
756 if (IsConfExemptKline(conf))
757 {
758 SetExemptKline(source_p);
759 sendto_one(source_p,
760 ":%s NOTICE %s :*** You are exempt from K/D/G lines. Congrats.",
761 me.name, source_p->name);
762 }
763
764 /*
765 * The else here is to make sure that G line exempt users
766 * do not get noticed twice.
767 */
768 else if (IsConfExemptGline(conf))
769 {
770 SetExemptGline(source_p);
771 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from G lines. Congrats.",
772 me.name, source_p->name);
773 }
774
775 if (IsConfExemptResv(conf))
776 {
777 SetExemptResv(source_p);
778 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from resvs. Congrats.",
779 me.name, source_p->name);
780 }
781
782 /* If this user is exempt from user limits set it "F lined" */
783 if (IsConfExemptLimits(conf))
784 {
785 SetExemptLimits(source_p);
786 sendto_one(source_p,
787 ":%s NOTICE %s :*** You are exempt from user limits. Congrats.",
788 me.name,source_p->name);
789 }
790
791 if (IsConfCanFlood(conf))
792 {
793 SetCanFlood(source_p);
794 sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from flood "
795 "protection, aren't you fearsome.",
796 me.name, source_p->name);
797 }
798 }
799
800 /* set_user_mode()
801 *
802 * added 15/10/91 By Darren Reed.
803 * parv[0] - sender
804 * parv[1] - username to change mode for
805 * parv[2] - modes to change
806 */
807 void
808 set_user_mode(struct Client *client_p, struct Client *source_p,
809 const int parc, char *parv[])
810 {
811 unsigned int flag, setflags;
812 char **p, *m, buf[IRCD_BUFSIZE];
813 struct Client *target_p;
814 int what = MODE_ADD, badflag = 0, i;
815
816 assert(!(parc < 2));
817
818 if ((target_p = find_person(client_p, parv[1])) == NULL)
819 {
820 if (MyConnect(source_p))
821 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
822 me.name, source_p->name, parv[1]);
823 return;
824 }
825
826 if (source_p != target_p)
827 {
828 sendto_one(source_p, form_str(ERR_USERSDONTMATCH),
829 me.name, source_p->name);
830 return;
831 }
832
833 if (parc < 3)
834 {
835 m = buf;
836 *m++ = '+';
837
838 for (i = 0; i < 128; ++i)
839 if (HasUMode(source_p, user_modes[i]))
840 *m++ = (char)i;
841 *m = '\0';
842
843 sendto_one(source_p, form_str(RPL_UMODEIS),
844 me.name, source_p->name, buf);
845 return;
846 }
847
848 /* find flags already set for user */
849 setflags = source_p->umodes;
850
851 /* parse mode change string(s) */
852 for (p = &parv[2]; p && *p; ++p)
853 {
854 for (m = *p; *m; ++m)
855 {
856 switch (*m)
857 {
858 case '+':
859 what = MODE_ADD;
860 break;
861 case '-':
862 what = MODE_DEL;
863 break;
864 case 'o':
865 if (what == MODE_ADD)
866 {
867 if (IsServer(client_p) && !HasUMode(source_p, UMODE_OPER))
868 {
869 ++Count.oper;
870 SetOper(source_p);
871 }
872 }
873 else
874 {
875 if (!HasUMode(source_p, UMODE_OPER))
876 break;
877
878 ClearOper(source_p);
879 Count.oper--;
880
881 if (MyConnect(source_p))
882 {
883 dlink_node *dm = NULL;
884
885 detach_conf(source_p, CONF_OPER);
886 ClrOFlag(source_p);
887 DelUMode(source_p, ConfigFileEntry.oper_only_umodes);
888
889 if ((dm = dlinkFindDelete(&oper_list, source_p)) != NULL)
890 free_dlink_node(dm);
891 }
892 }
893
894 break;
895
896 case 'S': /* Only servers may set +S in a burst */
897 case 'W': /* Only servers may set +W in a burst */
898 case 'r': /* Only services may set +r */
899 case 'x': /* Only services may set +x */
900 break;
901
902 default:
903 if ((flag = user_modes[(unsigned char)*m]))
904 {
905 if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER) &&
906 (ConfigFileEntry.oper_only_umodes & flag))
907 badflag = 1;
908 else
909 {
910 if (what == MODE_ADD)
911 AddUMode(source_p, flag);
912 else
913 DelUMode(source_p, flag);
914 }
915 }
916 else if (MyConnect(source_p))
917 badflag = 1;
918
919 break;
920 }
921 }
922 }
923
924 if (badflag)
925 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG),
926 me.name, source_p->name);
927
928 if (MyConnect(source_p) && HasUMode(source_p, UMODE_ADMIN) &&
929 !HasOFlag(source_p, OPER_FLAG_ADMIN))
930 {
931 sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
932 me.name, source_p->name);
933 DelUMode(source_p, UMODE_ADMIN);
934 }
935
936 if (!(setflags & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
937 ++Count.invisi;
938 if ((setflags & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
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) && !HasUMode(source_p, 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) && HasUMode(source_p, 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, SEND_UMODES, buf);
1027
1028 if (buf[0])
1029 {
1030 DLINK_FOREACH(ptr, serv_list.head)
1031 {
1032 struct Client *target_p = ptr->data;
1033
1034 if ((target_p != client_p) && (target_p != source_p))
1035 sendto_one(target_p, ":%s MODE %s :%s",
1036 ID_or_name(source_p, target_p),
1037 ID_or_name(source_p, target_p), buf);
1038 }
1039 }
1040
1041 if (client_p && MyClient(client_p))
1042 send_umode(client_p, source_p, old, 0xffffffff, buf);
1043 }
1044
1045 void
1046 user_set_hostmask(struct Client *target_p, const char *hostname, const int what)
1047 {
1048 dlink_node *ptr = NULL;
1049
1050 if (!strcmp(target_p->host, hostname))
1051 return;
1052
1053 switch (what)
1054 {
1055 case MODE_ADD:
1056 AddUMode(target_p, UMODE_HIDDENHOST);
1057 AddFlag(target_p, FLAGS_IP_SPOOFING);
1058 break;
1059 case MODE_DEL:
1060 DelUMode(target_p, UMODE_HIDDENHOST);
1061
1062 if (!HasFlag(target_p, FLAGS_AUTH_SPOOF))
1063 DelFlag(target_p, FLAGS_IP_SPOOFING);
1064 break;
1065 default: return;
1066 }
1067
1068 if (ConfigFileEntry.cycle_on_host_change)
1069 sendto_common_channels_local(target_p, 0, 0, ":%s!%s@%s QUIT :Changing hostname",
1070 target_p->name, target_p->username, target_p->host);
1071
1072 if (IsUserHostIp(target_p))
1073 delete_user_host(target_p->username, target_p->host, !MyConnect(target_p));
1074
1075 strlcpy(target_p->host, hostname, sizeof(target_p->host));
1076
1077 add_user_host(target_p->username, target_p->host, !MyConnect(target_p));
1078 SetUserHost(target_p);
1079
1080 if (MyClient(target_p))
1081 {
1082 sendto_one(target_p, form_str(RPL_NEWHOSTIS), me.name,
1083 target_p->name, target_p->host);
1084 clear_ban_cache_client(target_p);
1085 }
1086
1087 if (!ConfigFileEntry.cycle_on_host_change)
1088 return;
1089
1090 DLINK_FOREACH(ptr, target_p->channel.head)
1091 {
1092 char modebuf[4], nickbuf[NICKLEN * 3 + 3] = { '\0' };
1093 char *p = modebuf;
1094 int len = 0;
1095 const struct Membership *ms = ptr->data;
1096
1097 if (has_member_flags(ms, CHFL_CHANOP))
1098 {
1099 *p++ = 'o';
1100 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1101 }
1102
1103 if (has_member_flags(ms, CHFL_HALFOP))
1104 {
1105 *p++ = 'h';
1106 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1107 }
1108
1109 if (has_member_flags(ms, CHFL_VOICE))
1110 {
1111 *p++ = 'v';
1112 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
1113 }
1114
1115 *p = '\0';
1116
1117 sendto_channel_local_butone(target_p, 0, 0, ms->chptr, ":%s!%s@%s JOIN :%s",
1118 target_p->name, target_p->username, target_p->host,
1119 ms->chptr->chname);
1120 if (nickbuf[0])
1121 sendto_channel_local_butone(target_p, 0, 0, ms->chptr, ":%s MODE %s +%s %s",
1122 target_p->servptr->name, ms->chptr->chname,
1123 modebuf, nickbuf);
1124
1125 }
1126
1127 if (target_p->away[0])
1128 sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY,
1129 ":%s!%s@%s AWAY :%s",
1130 target_p->name, target_p->username,
1131 target_p->host, target_p->away);
1132 }
1133
1134 /* user_welcome()
1135 *
1136 * inputs - client pointer to client to welcome
1137 * output - NONE
1138 * side effects -
1139 */
1140 static void
1141 user_welcome(struct Client *source_p)
1142 {
1143 #if defined(__TIME__) && defined(__DATE__)
1144 static const char built_date[] = __DATE__ " at " __TIME__;
1145 #else
1146 static const char built_date[] = "unknown";
1147 #endif
1148
1149 #ifdef HAVE_LIBCRYPTO
1150 if (HasFlag(source_p, FLAGS_SSL))
1151 {
1152 AddUMode(source_p, UMODE_SSL);
1153 sendto_one(source_p, ":%s NOTICE %s :*** Connected securely via %s",
1154 me.name, source_p->name,
1155 ssl_get_cipher(source_p->localClient->fd.ssl));
1156 }
1157 #endif
1158
1159 sendto_one(source_p, form_str(RPL_WELCOME), me.name, source_p->name,
1160 ServerInfo.network_name, source_p->name);
1161 sendto_one(source_p, form_str(RPL_YOURHOST), me.name, source_p->name,
1162 get_listener_name(source_p->localClient->listener), ircd_version);
1163 sendto_one(source_p, form_str(RPL_CREATED),
1164 me.name, source_p->name, built_date);
1165 sendto_one(source_p, form_str(RPL_MYINFO),
1166 me.name, source_p->name, me.name, ircd_version, umode_buffer);
1167 show_isupport(source_p);
1168
1169 if (source_p->id[0] != '\0')
1170 sendto_one(source_p, form_str(RPL_YOURID), me.name,
1171 source_p->name, source_p->id);
1172
1173 show_lusers(source_p);
1174 motd_signon(source_p);
1175 }
1176
1177 /* check_xline()
1178 *
1179 * inputs - pointer to client to test
1180 * outupt - 1 if exiting 0 if ok
1181 * side effects -
1182 */
1183 static int
1184 check_xline(struct Client *source_p)
1185 {
1186 struct MaskItem *conf = NULL;
1187 const char *reason = NULL;
1188
1189 if ((conf = find_matching_name_conf(CONF_XLINE, source_p->info, NULL, NULL, 0)))
1190 {
1191 ++conf->count;
1192
1193 if (conf->reason != NULL)
1194 reason = conf->reason;
1195 else
1196 reason = "No Reason";
1197
1198 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
1199 "X-line Rejecting [%s] [%s], user %s [%s]",
1200 source_p->info, reason,
1201 get_client_name(source_p, HIDE_IP),
1202 source_p->sockhost);
1203
1204 ++ServerStats.is_ref;
1205 exit_client(source_p, &me, "Bad user info");
1206 return 1;
1207 }
1208
1209 return 0;
1210 }
1211
1212 /* oper_up()
1213 *
1214 * inputs - pointer to given client to oper
1215 * output - NONE
1216 * side effects - Blindly opers up given source_p, using conf info
1217 * all checks on passwords have already been done.
1218 * This could also be used by rsa oper routines.
1219 */
1220 void
1221 oper_up(struct Client *source_p)
1222 {
1223 const unsigned int old = source_p->umodes;
1224 const struct MaskItem *conf = source_p->localClient->confs.head->data;
1225
1226 assert(source_p->localClient->confs.head);
1227
1228 ++Count.oper;
1229 SetOper(source_p);
1230
1231 if (conf->modes)
1232 AddUMode(source_p, conf->modes);
1233 else if (ConfigFileEntry.oper_umodes)
1234 AddUMode(source_p, ConfigFileEntry.oper_umodes);
1235
1236 if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
1237 ++Count.invisi;
1238 if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
1239 --Count.invisi;
1240
1241 assert(dlinkFind(&oper_list, source_p) == NULL);
1242 dlinkAdd(source_p, make_dlink_node(), &oper_list);
1243
1244 AddOFlag(source_p, conf->port);
1245
1246 if (HasOFlag(source_p, OPER_FLAG_ADMIN))
1247 AddUMode(source_p, UMODE_ADMIN);
1248
1249 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, "%s is now an operator",
1250 get_oper_name(source_p));
1251 send_umode_out(source_p, source_p, old);
1252 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1253 }
1254
1255 static char new_uid[TOTALSIDUID + 1]; /* allow for \0 */
1256
1257 int
1258 valid_sid(const char *sid)
1259 {
1260 if (strlen(sid) == IRC_MAXSID)
1261 if (IsDigit(*sid))
1262 if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
1263 return 1;
1264
1265 return 0;
1266 }
1267
1268 /*
1269 * init_uid()
1270 *
1271 * inputs - NONE
1272 * output - NONE
1273 * side effects - new_uid is filled in with server id portion (sid)
1274 * (first 3 bytes) or defaulted to 'A'.
1275 * Rest is filled in with 'A'
1276 */
1277 void
1278 init_uid(void)
1279 {
1280 unsigned int i;
1281
1282 memset(new_uid, 0, sizeof(new_uid));
1283
1284 if (!EmptyString(ServerInfo.sid))
1285 strlcpy(new_uid, ServerInfo.sid, sizeof(new_uid));
1286
1287 for (i = 0; i < IRC_MAXSID; ++i)
1288 if (new_uid[i] == '\0')
1289 new_uid[i] = 'A';
1290
1291 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1292 memcpy(new_uid + IRC_MAXSID, "AAAAA@", IRC_MAXUID);
1293 }
1294
1295 /*
1296 * add_one_to_uid
1297 *
1298 * inputs - index number into new_uid
1299 * output - NONE
1300 * side effects - new_uid is incremented by one
1301 * note this is a recursive function
1302 */
1303 static void
1304 add_one_to_uid(int i)
1305 {
1306 if (i != IRC_MAXSID) /* Not reached server SID portion yet? */
1307 {
1308 if (new_uid[i] == 'Z')
1309 new_uid[i] = '0';
1310 else if (new_uid[i] == '9')
1311 {
1312 new_uid[i] = 'A';
1313 add_one_to_uid(i-1);
1314 }
1315 else
1316 ++new_uid[i];
1317 }
1318 else
1319 {
1320 /* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
1321 if (new_uid[i] == 'Z')
1322 memcpy(new_uid + IRC_MAXSID, "AAAAAA", IRC_MAXUID);
1323 else
1324 ++new_uid[i];
1325 }
1326 }
1327
1328 /*
1329 * uid_get
1330 *
1331 * inputs - struct Client *
1332 * output - new UID is returned to caller
1333 * side effects - new_uid is incremented by one.
1334 */
1335 static const char *
1336 uid_get(void)
1337 {
1338 add_one_to_uid(TOTALSIDUID - 1); /* index from 0 */
1339 return new_uid;
1340 }
1341
1342 /*
1343 * init_isupport()
1344 *
1345 * input - NONE
1346 * output - NONE
1347 * side effects - Must be called before isupport is enabled
1348 */
1349 void
1350 init_isupport(void)
1351 {
1352 add_isupport("CALLERID", NULL, -1);
1353 add_isupport("CASEMAPPING", CASEMAP, -1);
1354 add_isupport("DEAF", "D", -1);
1355 add_isupport("KICKLEN", NULL, KICKLEN);
1356 add_isupport("MODES", NULL, MAXMODEPARAMS);
1357 #ifdef HALFOPS
1358 add_isupport("PREFIX", "(ohv)@%+", -1);
1359 add_isupport("STATUSMSG", "@%+", -1);
1360 #else
1361 add_isupport("PREFIX", "(ov)@+", -1);
1362 add_isupport("STATUSMSG", "@+", -1);
1363 #endif
1364 add_isupport("EXCEPTS", "e", -1);
1365 add_isupport("INVEX", "I", -1);
1366 }
1367
1368 /*
1369 * add_isupport()
1370 *
1371 * input - name of supported function
1372 * - options if any
1373 * - number if any
1374 * output - NONE
1375 * side effects - Each supported item must call this when activated
1376 */
1377 void
1378 add_isupport(const char *name, const char *options, int n)
1379 {
1380 dlink_node *ptr;
1381 struct Isupport *support;
1382
1383 DLINK_FOREACH(ptr, support_list.head)
1384 {
1385 support = ptr->data;
1386 if (irccmp(support->name, name) == 0)
1387 {
1388 MyFree(support->name);
1389 MyFree(support->options);
1390 break;
1391 }
1392 }
1393
1394 if (ptr == NULL)
1395 {
1396 support = MyMalloc(sizeof(*support));
1397 dlinkAddTail(support, &support->node, &support_list);
1398 }
1399
1400 support->name = xstrdup(name);
1401 if (options != NULL)
1402 support->options = xstrdup(options);
1403 support->number = n;
1404
1405 rebuild_isupport_message_line();
1406 }
1407
1408 /*
1409 * delete_isupport()
1410 *
1411 * input - name of supported function
1412 * output - NONE
1413 * side effects - Each supported item must call this when deactivated
1414 */
1415 void
1416 delete_isupport(const char *name)
1417 {
1418 dlink_node *ptr;
1419 struct Isupport *support;
1420
1421 DLINK_FOREACH(ptr, support_list.head)
1422 {
1423 support = ptr->data;
1424 if (irccmp(support->name, name) == 0)
1425 {
1426 dlinkDelete(ptr, &support_list);
1427 MyFree(support->name);
1428 MyFree(support->options);
1429 MyFree(support);
1430 break;
1431 }
1432 }
1433
1434 rebuild_isupport_message_line();
1435 }
1436
1437 /*
1438 * rebuild_isupport_message_line
1439 *
1440 * input - NONE
1441 * output - NONE
1442 * side effects - Destroy the isupport MessageFile lines, and rebuild.
1443 */
1444 void
1445 rebuild_isupport_message_line(void)
1446 {
1447 char isupportbuffer[IRCD_BUFSIZE];
1448 char *p = isupportbuffer;
1449 dlink_node *ptr = NULL, *ptr_next = NULL;
1450 int n = 0;
1451 int tokens = 0;
1452 size_t len = 0;
1453 size_t reserve = strlen(me.name) + HOSTLEN + strlen(form_str(RPL_ISUPPORT));
1454
1455 DLINK_FOREACH_SAFE(ptr, ptr_next, support_list_lines.head)
1456 {
1457 dlinkDelete(ptr, &support_list_lines);
1458 MyFree(ptr->data);
1459 free_dlink_node(ptr);
1460 }
1461
1462 DLINK_FOREACH(ptr, support_list.head)
1463 {
1464 struct Isupport *support = ptr->data;
1465
1466 p += (n = sprintf(p, "%s", support->name));
1467 len += n;
1468
1469 if (support->options != NULL)
1470 {
1471 p += (n = sprintf(p, "=%s", support->options));
1472 len += n;
1473 }
1474
1475 if (support->number > 0)
1476 {
1477 p += (n = sprintf(p, "=%d", support->number));
1478 len += n;
1479 }
1480
1481 *p++ = ' ';
1482 len++;
1483 *p = '\0';
1484
1485 if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1486 { /* arbritrary for now */
1487 if (*--p == ' ')
1488 *p = '\0';
1489
1490 dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1491 p = isupportbuffer;
1492 len = 0;
1493 n = tokens = 0;
1494 }
1495 }
1496
1497 if (len != 0)
1498 {
1499 if (*--p == ' ')
1500 *p = '\0';
1501 dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1502 }
1503 }

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svn:keywords Id Revision

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