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root/svn/ircd-hybrid/branches/8.2.x/src/user.c
Revision: 6731
Committed: Wed Nov 4 21:55:44 2015 UTC (9 years, 9 months ago) by michael
Content type: text/x-csrc
File size: 23698 byte(s)
Log Message:
- user.c:user_set_hostmask(): replace a MyClient() test with just MyConnect()

File Contents

# User Rev Content
1 adx 30 /*
2 michael 2916 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 adx 30 *
4 michael 5346 * Copyright (c) 1997-2015 ircd-hybrid development team
5 adx 30 *
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 michael 4564 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19 adx 30 * USA
20     */
21    
22 michael 5564 /*! \file user.c
23 michael 2916 * \brief User related functions.
24     * \version $Id$
25     */
26    
27 adx 30 #include "stdinc.h"
28 michael 1011 #include "list.h"
29 michael 3347 #include "user.h"
30 adx 30 #include "channel.h"
31     #include "channel_mode.h"
32     #include "client.h"
33     #include "hash.h"
34 michael 6160 #include "id.h"
35 adx 30 #include "irc_string.h"
36     #include "ircd.h"
37     #include "listener.h"
38     #include "motd.h"
39     #include "numeric.h"
40 michael 1309 #include "conf.h"
41     #include "log.h"
42 michael 3347 #include "server.h"
43 adx 30 #include "send.h"
44     #include "memory.h"
45     #include "packet.h"
46 michael 982 #include "rng_mt.h"
47 adx 30 #include "userhost.h"
48 michael 3347 #include "misc.h"
49 michael 1243 #include "parse.h"
50 michael 876 #include "watch.h"
51 michael 6186 #include "isupport.h"
52 adx 30
53     static char umode_buffer[IRCD_BUFSIZE];
54    
55 michael 5393 const struct user_modes *umode_map[256];
56     const struct user_modes umode_tab[] =
57 adx 30 {
58 michael 5393 { 'D', UMODE_DEAF },
59     { 'F', UMODE_FARCONNECT },
60     { 'G', UMODE_SOFTCALLERID },
61     { 'H', UMODE_HIDDEN },
62     { 'R', UMODE_REGONLY },
63     { 'S', UMODE_SSL },
64     { 'W', UMODE_WEBIRC },
65     { 'a', UMODE_ADMIN },
66     { 'b', UMODE_BOTS },
67     { 'c', UMODE_CCONN },
68     { 'd', UMODE_DEBUG },
69     { 'e', UMODE_EXTERNAL },
70     { 'f', UMODE_FULL },
71     { 'g', UMODE_CALLERID },
72     { 'i', UMODE_INVISIBLE },
73     { 'j', UMODE_REJ },
74     { 'k', UMODE_SKILL },
75     { 'l', UMODE_LOCOPS },
76     { 'n', UMODE_NCHANGE },
77     { 'o', UMODE_OPER },
78     { 'p', UMODE_HIDECHANS },
79     { 'q', UMODE_HIDEIDLE },
80     { 'r', UMODE_REGISTERED },
81     { 's', UMODE_SERVNOTICE },
82     { 'u', UMODE_UNAUTH },
83     { 'w', UMODE_WALLOP },
84     { 'x', UMODE_HIDDENHOST },
85     { 'y', UMODE_SPY },
86     { '\0', 0 }
87 adx 30 };
88    
89     void
90 michael 6190 user_modes_init(void)
91 adx 30 {
92     char *umode_buffer_ptr = umode_buffer;
93    
94 michael 5393 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
95     {
96     umode_map[tab->c] = tab;
97     *umode_buffer_ptr++ = tab->c;
98     }
99 adx 30
100     *umode_buffer_ptr = '\0';
101     }
102    
103     /* show_lusers()
104     *
105     * inputs - pointer to client
106     * output - NONE
107     * side effects - display to client user counts etc.
108     */
109     void
110 michael 2345 show_lusers(struct Client *source_p)
111 adx 30 {
112 michael 1219 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
113 michael 4723 sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT, (Count.total - Count.invisi),
114 michael 4208 Count.invisi, dlink_list_length(&global_server_list));
115 adx 30 else
116 michael 4723 sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT, (Count.total - Count.invisi),
117     Count.invisi, 1);
118 adx 30
119 michael 3375 if (Count.oper)
120 michael 3109 sendto_one_numeric(source_p, &me, RPL_LUSEROP, Count.oper);
121 adx 30
122 michael 3375 if (dlink_list_length(&unknown_list))
123 michael 3109 sendto_one_numeric(source_p, &me, RPL_LUSERUNKNOWN, dlink_list_length(&unknown_list));
124 adx 30
125 michael 3945 if (dlink_list_length(&channel_list))
126     sendto_one_numeric(source_p, &me, RPL_LUSERCHANNELS, dlink_list_length(&channel_list));
127 adx 30
128 michael 1219 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
129 adx 30 {
130 michael 3109 sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.local, Count.myserver);
131     sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.local, Count.max_loc);
132 adx 30 }
133     else
134     {
135 michael 3109 sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.total, 0);
136     sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.total, Count.max_tot);
137 adx 30 }
138    
139 michael 3109 sendto_one_numeric(source_p, &me, RPL_GLOBALUSERS, Count.total, Count.max_tot);
140 adx 30
141 michael 1219 if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER))
142 michael 3109 sendto_one_numeric(source_p, &me, RPL_STATSCONN, Count.max_loc_con,
143     Count.max_loc_cli, Count.totalrestartcount);
144 adx 30
145 michael 1143 if (Count.local > Count.max_loc_cli)
146     Count.max_loc_cli = Count.local;
147 adx 30
148 michael 1143 if ((Count.local + Count.myserver) > Count.max_loc_con)
149 michael 2345 Count.max_loc_con = Count.local + Count.myserver;
150 adx 30 }
151    
152 michael 3272 /* report_and_set_user_flags()
153     *
154     * inputs - pointer to source_p
155     * - pointer to conf for this user
156     * output - NONE
157     * side effects - Report to user any special flags
158     * they are getting, and set them.
159     */
160     static void
161     report_and_set_user_flags(struct Client *source_p, const struct MaskItem *conf)
162     {
163     /* If this user is being spoofed, tell them so */
164     if (IsConfDoSpoofIp(conf))
165     sendto_one_notice(source_p, &me, ":*** Spoofing your IP. Congrats.");
166    
167 michael 4855 /* If this user is in the exception class, set it "E lined" */
168 michael 3272 if (IsConfExemptKline(conf))
169     {
170 michael 6314 AddFlag(source_p, FLAGS_EXEMPTKLINE);
171 michael 5810 sendto_one_notice(source_p, &me, ":*** You are exempt from K/D lines. Congrats.");
172 michael 3272 }
173    
174 michael 5986 if (IsConfExemptXline(conf))
175     {
176 michael 6314 AddFlag(source_p, FLAGS_EXEMPTXLINE);
177 michael 5986 sendto_one_notice(source_p, &me, ":*** You are exempt from X lines. Congrats.");
178     }
179    
180 michael 3272 if (IsConfExemptResv(conf))
181     {
182 michael 6314 AddFlag(source_p, FLAGS_EXEMPTRESV);
183 michael 3272 sendto_one_notice(source_p, &me, ":*** You are exempt from resvs. Congrats.");
184     }
185    
186     /* If this user is exempt from user limits set it "F lined" */
187     if (IsConfExemptLimits(conf))
188     {
189 michael 6314 AddFlag(source_p, FLAGS_NOLIMIT);
190 michael 3272 sendto_one_notice(source_p, &me, ":*** You are exempt from user limits. Congrats.");
191     }
192    
193     if (IsConfCanFlood(conf))
194     {
195 michael 6314 AddFlag(source_p, FLAGS_CANFLOOD);
196 michael 3272 sendto_one_notice(source_p, &me, ":*** You are exempt from flood "
197     "protection, aren't you fearsome.");
198     }
199     }
200    
201     /* introduce_client()
202     *
203     * inputs - source_p
204     * output - NONE
205     * side effects - This common function introduces a client to the rest
206     * of the net, either from a local client connect or
207     * from a remote connect.
208     */
209     static void
210     introduce_client(struct Client *source_p)
211     {
212 michael 4816 dlink_node *node = NULL;
213 michael 3272 char ubuf[IRCD_BUFSIZE] = "";
214    
215     if (MyClient(source_p))
216 michael 4021 send_umode(source_p, source_p, 0, ubuf);
217 michael 3272 else
218 michael 4021 send_umode(NULL, source_p, 0, ubuf);
219 michael 3272
220     watch_check_hash(source_p, RPL_LOGON);
221    
222     if (ubuf[0] == '\0')
223     {
224     ubuf[0] = '+';
225     ubuf[1] = '\0';
226     }
227    
228 michael 4816 DLINK_FOREACH(node, local_server_list.head)
229 michael 3272 {
230 michael 4816 struct Client *server = node->data;
231 michael 3272
232     if (server == source_p->from)
233     continue;
234    
235 michael 6353 if (IsCapable(server, CAPAB_SVS))
236 michael 5785 sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s %s :%s",
237 michael 3272 source_p->servptr->id,
238     source_p->name, source_p->hopcount+1,
239     (unsigned long)source_p->tsinfo,
240     ubuf, source_p->username, source_p->host,
241 michael 4964 source_p->sockhost, source_p->id,
242 michael 4820 source_p->account,
243 michael 3272 source_p->info);
244     else
245 michael 5785 sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s :%s",
246 michael 3272 source_p->servptr->id,
247     source_p->name, source_p->hopcount+1,
248     (unsigned long)source_p->tsinfo,
249     ubuf, source_p->username, source_p->host,
250 michael 4964 source_p->sockhost, source_p->id, source_p->info);
251 michael 3272
252     if (!EmptyString(source_p->certfp))
253     sendto_one(server, ":%s CERTFP %s", source_p->id, source_p->certfp);
254     }
255     }
256    
257     /* user_welcome()
258     *
259     * inputs - client pointer to client to welcome
260     * output - NONE
261     * side effects -
262     */
263     static void
264     user_welcome(struct Client *source_p)
265     {
266     static const char built_date[] = __DATE__ " at " __TIME__;
267    
268     #ifdef HAVE_LIBCRYPTO
269     if (HasFlag(source_p, FLAGS_SSL))
270     {
271     AddUMode(source_p, UMODE_SSL);
272     sendto_one_notice(source_p, &me, ":*** Connected securely via %s",
273 michael 4589 ssl_get_cipher(source_p->connection->fd.ssl));
274 michael 3272 }
275     #endif
276    
277 michael 4341 sendto_one_numeric(source_p, &me, RPL_WELCOME, ConfigServerInfo.network_name,
278 michael 3272 source_p->name);
279     sendto_one_numeric(source_p, &me, RPL_YOURHOST,
280 michael 6368 listener_get_name(source_p->connection->listener), ircd_version);
281 michael 3272 sendto_one_numeric(source_p, &me, RPL_CREATED, built_date);
282     sendto_one_numeric(source_p, &me, RPL_MYINFO, me.name, ircd_version, umode_buffer);
283 michael 6253
284 michael 6186 isupport_show(source_p);
285 michael 3272 show_lusers(source_p);
286     motd_signon(source_p);
287     }
288    
289     /* check_xline()
290     *
291     * inputs - pointer to client to test
292     * outupt - 1 if exiting 0 if ok
293     * side effects -
294     */
295     static int
296     check_xline(struct Client *source_p)
297     {
298     struct MaskItem *conf = NULL;
299    
300 michael 6314 if (HasFlag(source_p, FLAGS_EXEMPTXLINE))
301 michael 5986 return 0;
302    
303 michael 3272 if ((conf = find_matching_name_conf(CONF_XLINE, source_p->info, NULL, NULL, 0)))
304     {
305     ++conf->count;
306     sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
307     "X-line Rejecting [%s] [%s], user %s [%s]",
308 michael 4939 source_p->info, conf->reason,
309 michael 3272 get_client_name(source_p, HIDE_IP),
310     source_p->sockhost);
311    
312     ++ServerStats.is_ref;
313     exit_client(source_p, "Bad user info");
314     return 1;
315     }
316    
317     return 0;
318     }
319    
320 michael 3317 /*! \brief This function is called when both NICK and USER messages
321 michael 3316 * have been accepted for the client, in whatever order. Only
322     * after this, is the UID message propagated.
323 michael 3317 * \param source_p Pointer to given client to introduce
324 michael 3316 */
325 adx 30 void
326 michael 1080 register_local_user(struct Client *source_p)
327 adx 30 {
328 michael 1115 const char *id = NULL;
329 michael 1632 const struct MaskItem *conf = NULL;
330 adx 30
331 michael 1080 assert(source_p == source_p->from);
332 adx 30 assert(MyConnect(source_p));
333 michael 5591 assert(IsUnknown(source_p));
334 michael 4589 assert(!source_p->connection->registration);
335 adx 30
336 michael 4341 if (ConfigGeneral.ping_cookie)
337 adx 30 {
338 michael 6314 if (!HasFlag(source_p, FLAGS_PINGSENT) && !source_p->connection->random_ping)
339 adx 30 {
340 michael 983 do
341 michael 4589 source_p->connection->random_ping = genrand_int32();
342     while (!source_p->connection->random_ping);
343 michael 983
344 michael 4723 sendto_one(source_p, "PING :%u", source_p->connection->random_ping);
345 michael 6314 AddFlag(source_p, FLAGS_PINGSENT);
346 adx 30 return;
347     }
348    
349 michael 6314 if (!HasFlag(source_p, FLAGS_PING_COOKIE))
350 adx 30 return;
351     }
352    
353 michael 4589 source_p->connection->last_privmsg = CurrentTime;
354 adx 30 /* Straight up the maximum rate of flooding... */
355 michael 4589 source_p->connection->allow_read = MAX_FLOOD_BURST;
356 adx 30
357 michael 1644 if (!check_client(source_p))
358 adx 30 return;
359    
360 michael 2314 if (!valid_hostname(source_p->host))
361 adx 30 {
362 michael 3110 sendto_one_notice(source_p, &me, ":*** Notice -- You have an illegal "
363     "character in your hostname");
364 michael 4723 strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
365 adx 30 }
366    
367 michael 4589 conf = source_p->connection->confs.head->data;
368 adx 30
369 michael 6314 if (!HasFlag(source_p, FLAGS_GOTID))
370 adx 30 {
371 michael 3215 char username[USERLEN + 1] = "";
372 adx 30 unsigned int i = 0;
373    
374 michael 1632 if (IsNeedIdentd(conf))
375 adx 30 {
376 michael 896 ++ServerStats.is_ref;
377 michael 3110 sendto_one_notice(source_p, &me, ":*** Notice -- You need to install "
378     "identd to use this server");
379 michael 3171 exit_client(source_p, "Install identd");
380 adx 30 return;
381     }
382    
383 michael 1080 strlcpy(username, source_p->username, sizeof(username));
384 adx 30
385 michael 1632 if (!IsNoTilde(conf))
386 adx 30 source_p->username[i++] = '~';
387    
388 michael 6358 for (const char *p = username; *p && i < USERLEN; ++p)
389 michael 4109 source_p->username[i++] = *p;
390 adx 30
391     source_p->username[i] = '\0';
392     }
393    
394 michael 3317 /* Password check */
395 michael 1632 if (!EmptyString(conf->passwd))
396 adx 30 {
397 michael 4589 if (!match_conf_password(source_p->connection->password, conf))
398 adx 30 {
399 michael 896 ++ServerStats.is_ref;
400 michael 3109
401     sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH);
402 michael 3171 exit_client(source_p, "Bad Password");
403 adx 30 return;
404     }
405     }
406    
407 michael 3317 /*
408 michael 4589 * Don't free source_p->connection->password here - it can be required
409 michael 4723 * by masked /stats I if there are auth {} blocks with need_password = no;
410 adx 30 * --adx
411     */
412    
413 michael 3317 /*
414     * Report if user has &^>= etc. and set flags as needed in source_p
415     */
416 michael 1632 report_and_set_user_flags(source_p, conf);
417 adx 30
418 michael 1080 if (IsDead(source_p))
419 michael 980 return;
420    
421 michael 3317 /*
422     * Limit clients -
423 adx 30 * We want to be able to have servers and F-line clients
424     * connect, so save room for "buffer" connections.
425     * Smaller servers may want to decrease this, and it should
426     * probably be just a percentage of the MAXCLIENTS...
427     * -Taner
428     */
429 michael 5488 if ((Count.local >= GlobalSetOptions.maxclients + MAX_BUFFER) ||
430 michael 6314 (Count.local >= GlobalSetOptions.maxclients && !HasFlag(source_p, FLAGS_NOLIMIT)))
431 adx 30 {
432 michael 1618 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
433 adx 30 "Too many clients, rejecting %s[%s].",
434 michael 1080 source_p->name, source_p->host);
435 michael 896 ++ServerStats.is_ref;
436 michael 3171 exit_client(source_p, "Sorry, server is full - try later");
437 adx 30 return;
438     }
439    
440 michael 2314 if (!valid_username(source_p->username, 1))
441 adx 30 {
442 michael 3375 char buf[IRCD_BUFSIZE] = "";
443 adx 30
444 michael 1618 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
445     "Invalid username: %s (%s@%s)",
446 michael 1080 source_p->name, source_p->username, source_p->host);
447 michael 896 ++ServerStats.is_ref;
448 michael 3375 snprintf(buf, sizeof(buf), "Invalid username [%s]", source_p->username);
449     exit_client(source_p, buf);
450 adx 30 return;
451     }
452    
453 michael 592 if (check_xline(source_p))
454 adx 30 return;
455    
456 michael 3215 while (hash_find_id((id = uid_get())))
457 michael 1115 ;
458 michael 573
459 michael 1115 strlcpy(source_p->id, id, sizeof(source_p->id));
460     hash_add_id(source_p);
461 adx 30
462 michael 1618 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
463 michael 1137 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
464 michael 1080 source_p->name, source_p->username, source_p->host,
465 michael 4968 source_p->sockhost,
466 michael 4589 get_client_class(&source_p->connection->confs),
467 michael 1137 source_p->info, source_p->id);
468 adx 30
469 michael 4341 if (ConfigGeneral.invisible_on_connect)
470 michael 159 {
471 michael 1219 AddUMode(source_p, UMODE_INVISIBLE);
472 michael 980 ++Count.invisi;
473 michael 159 }
474 adx 30
475 michael 2314 if (++Count.local > Count.max_loc)
476 adx 30 {
477     Count.max_loc = Count.local;
478    
479     if (!(Count.max_loc % 10))
480 michael 6317 sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
481 michael 4587 "New maximum local client connections: %u",
482 adx 30 Count.max_loc);
483     }
484    
485     if (++Count.total > Count.max_tot)
486     Count.max_tot = Count.total;
487 michael 948 ++Count.totalrestartcount;
488 adx 30
489 michael 1080 assert(source_p->servptr == &me);
490     SetClient(source_p);
491     dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
492 michael 4188 dlinkAdd(source_p, &source_p->node, &global_client_list);
493 michael 1080
494 michael 1125 assert(dlinkFind(&unknown_list, source_p));
495 michael 1013
496 michael 4589 dlink_move_node(&source_p->connection->lclient_node,
497 michael 1126 &unknown_list, &local_client_list);
498 adx 30
499     user_welcome(source_p);
500 michael 6442 userhost_add(source_p->username, source_p->host, 0);
501 michael 6314 AddFlag(source_p, FLAGS_USERHOST);
502 adx 30
503 michael 1080 introduce_client(source_p);
504 adx 30 }
505    
506     /* register_remote_user()
507     *
508 michael 1080 * inputs - source_p remote or directly connected client
509 adx 30 * - username to register as
510     * - host name to register as
511     * - server name
512     * output - NONE
513     * side effects - This function is called when a remote client
514     * is introduced by a server.
515     */
516     void
517 michael 4091 register_remote_user(struct Client *source_p)
518 adx 30 {
519 michael 4224 const struct Client *target_p = NULL;
520 adx 30
521     if ((target_p = source_p->servptr) && target_p->from != source_p->from)
522     {
523 michael 1618 sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
524 adx 30 "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
525 michael 1080 source_p->from->name, source_p->name, source_p->username,
526 adx 30 source_p->host, source_p->servptr->name,
527     target_p->name, target_p->from->name);
528 michael 3176 sendto_one(source_p->from,
529 michael 4973 ":%s KILL %s :%s (UID from wrong direction (%s != %s))",
530 michael 3186 me.id, source_p->id, me.name, source_p->servptr->name,
531 michael 3176 target_p->from->name);
532    
533 michael 1219 AddFlag(source_p, FLAGS_KILLED);
534 michael 4973 exit_client(source_p, "UID server wrong direction");
535 adx 30 return;
536     }
537    
538 michael 1167 /*
539     * If the nick has been introduced by a services server,
540     * make it a service as well.
541     */
542 michael 1219 if (HasFlag(source_p->servptr, FLAGS_SERVICE))
543     AddFlag(source_p, FLAGS_SERVICE);
544 michael 1167
545 michael 510 if (++Count.total > Count.max_tot)
546     Count.max_tot = Count.total;
547    
548 adx 30 SetClient(source_p);
549 michael 889 dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
550 michael 4188 dlinkAdd(source_p, &source_p->node, &global_client_list);
551 michael 6442 userhost_add(source_p->username, source_p->host, 1);
552 michael 6314 AddFlag(source_p, FLAGS_USERHOST);
553 adx 30
554 michael 1976 if (HasFlag(source_p->servptr, FLAGS_EOB))
555 michael 5744 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
556     "Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>",
557     source_p->servptr->name,
558     source_p->name, source_p->username, source_p->host,
559     source_p->sockhost, source_p->info, source_p->id);
560 michael 1976
561 michael 1080 introduce_client(source_p);
562 adx 30 }
563    
564     /* valid_hostname()
565     *
566     * Inputs - pointer to hostname
567     * Output - 1 if valid, 0 if not
568     * Side effects - check hostname for validity
569     *
570     * NOTE: this doesn't allow a hostname to begin with a dot and
571     * will not allow more dots than chars.
572     */
573     int
574     valid_hostname(const char *hostname)
575     {
576     const char *p = hostname;
577    
578 michael 3235 assert(p);
579 adx 30
580 michael 2352 if (EmptyString(p) || *p == '.' || *p == ':')
581 michael 56 return 0;
582 adx 30
583 michael 1080 for (; *p; ++p)
584 adx 30 if (!IsHostChar(*p))
585 michael 56 return 0;
586 adx 30
587 michael 1795 return p - hostname <= HOSTLEN;
588 adx 30 }
589    
590     /* valid_username()
591     *
592     * Inputs - pointer to user
593     * Output - 1 if valid, 0 if not
594     * Side effects - check username for validity
595     *
596     * Absolutely always reject any '*' '!' '?' '@' in an user name
597     * reject any odd control characters names.
598     * Allow '.' in username to allow for "first.last"
599     * style of username
600     */
601     int
602 michael 2069 valid_username(const char *username, const int local)
603 adx 30 {
604 michael 3871 unsigned int dots = 0;
605 adx 30 const char *p = username;
606    
607 michael 3235 assert(p);
608 adx 30
609 michael 1080 if (*p == '~')
610 adx 30 ++p;
611    
612 michael 2067 /*
613     * Reject usernames that don't start with an alphanum
614 adx 30 * i.e. reject jokers who have '-@somehost' or '.@somehost'
615     * or "-hi-@somehost", "h-----@somehost" would still be accepted.
616     */
617     if (!IsAlNum(*p))
618 michael 56 return 0;
619 adx 30
620 michael 2067 if (local)
621 adx 30 {
622 michael 2067 while (*++p)
623 adx 30 {
624 michael 4341 if (*p == '.' && ConfigGeneral.dots_in_ident)
625 michael 2067 {
626 michael 4341 if (++dots > ConfigGeneral.dots_in_ident)
627 michael 2067 return 0;
628     if (!IsUserChar(*(p + 1)))
629     return 0;
630     }
631     else if (!IsUserChar(*p))
632 michael 56 return 0;
633 adx 30 }
634     }
635 michael 2067 else
636     {
637     while (*++p)
638     if (!IsUserChar(*p))
639     return 0;
640     }
641 adx 30
642 michael 3657 return p - username <= USERLEN;
643 adx 30 }
644    
645 michael 1165 /* clean_nick_name()
646     *
647     * input - nickname
648     * - whether it's a local nick (1) or remote (0)
649     * output - none
650     * side effects - walks through the nickname, returning 0 if erroneous
651     */
652     int
653     valid_nickname(const char *nickname, const int local)
654     {
655     const char *p = nickname;
656 michael 3318
657 michael 4983 assert(p);
658 michael 1165
659 michael 3317 /*
660     * Nicks can't start with a digit or - or be 0 length.
661     */
662 michael 4708 if (EmptyString(p) || *p == '-' || (IsDigit(*p) && local))
663 michael 1165 return 0;
664    
665     for (; *p; ++p)
666     if (!IsNickChar(*p))
667     return 0;
668    
669 michael 1431 return p - nickname <= NICKLEN;
670 michael 1165 }
671    
672 adx 30 /* send_umode()
673     * send the MODE string for user (user) to connection client_p
674     * -avalon
675 db 849 *
676     * inputs - client_p
677     * - source_p
678     * - int old
679     * - suplied umode_buf
680     * output - NONE
681 adx 30 */
682     void
683     send_umode(struct Client *client_p, struct Client *source_p,
684 michael 4021 unsigned int old, char *umode_buf)
685 adx 30 {
686 michael 1013 char *m = umode_buf;
687 adx 30 int what = 0;
688    
689 michael 56 /*
690 michael 3317 * Build a string in umode_buf to represent the change in the user's
691 adx 30 * mode between the new (source_p->umodes) and 'old'.
692     */
693 michael 5393 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
694 adx 30 {
695 michael 5393 if ((tab->flag & old) && !HasUMode(source_p, tab->flag))
696 adx 30 {
697     if (what == MODE_DEL)
698 michael 5393 *m++ = tab->c;
699 adx 30 else
700     {
701     what = MODE_DEL;
702     *m++ = '-';
703 michael 5393 *m++ = tab->c;
704 adx 30 }
705     }
706 michael 5393 else if (!(tab->flag & old) && HasUMode(source_p, tab->flag))
707 adx 30 {
708     if (what == MODE_ADD)
709 michael 5393 *m++ = tab->c;
710 adx 30 else
711     {
712     what = MODE_ADD;
713     *m++ = '+';
714 michael 5393 *m++ = tab->c;
715 adx 30 }
716     }
717     }
718    
719     *m = '\0';
720    
721     if (*umode_buf && client_p)
722 michael 528 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
723 michael 4705 client_p->name, client_p->username,
724     client_p->host, client_p->name, umode_buf);
725 adx 30 }
726    
727     /* send_umode_out()
728     *
729     * inputs -
730     * output - NONE
731     * side effects - Only send ubuf out to servers that know about this client
732     */
733     void
734 michael 4706 send_umode_out(struct Client *source_p, unsigned int old)
735 adx 30 {
736 michael 3215 char buf[IRCD_BUFSIZE] = "";
737 adx 30
738 michael 4706 send_umode(MyClient(source_p) ? source_p : NULL, source_p, old, buf);
739 adx 30
740 michael 573 if (buf[0])
741 michael 4963 sendto_server(source_p, 0, 0, ":%s MODE %s :%s",
742 michael 3186 source_p->id, source_p->id, buf);
743 adx 30 }
744    
745 michael 1819 void
746 michael 2137 user_set_hostmask(struct Client *target_p, const char *hostname, const int what)
747 michael 1819 {
748 michael 4816 dlink_node *node = NULL;
749 michael 2141
750 michael 2145 if (!strcmp(target_p->host, hostname))
751     return;
752 michael 2141
753 michael 2137 switch (what)
754     {
755     case MODE_ADD:
756     AddUMode(target_p, UMODE_HIDDENHOST);
757     break;
758     case MODE_DEL:
759     DelUMode(target_p, UMODE_HIDDENHOST);
760     break;
761 michael 2145 default: return;
762 michael 2137 }
763    
764 michael 4341 if (ConfigGeneral.cycle_on_host_change)
765 michael 2289 sendto_common_channels_local(target_p, 0, 0, ":%s!%s@%s QUIT :Changing hostname",
766     target_p->name, target_p->username, target_p->host);
767 michael 2145
768 michael 6314 if (HasFlag(target_p, FLAGS_USERHOST))
769 michael 6442 userhost_del(target_p->username, target_p->host, !MyConnect(target_p));
770 michael 2145
771     strlcpy(target_p->host, hostname, sizeof(target_p->host));
772    
773 michael 6442 userhost_add(target_p->username, target_p->host, !MyConnect(target_p));
774 michael 6314 AddFlag(target_p, FLAGS_USERHOST);
775 michael 2145
776 michael 6731 if (MyConnect(target_p))
777 michael 2137 {
778 michael 4558 sendto_one_numeric(target_p, &me, RPL_VISIBLEHOST, target_p->host);
779 michael 1819 clear_ban_cache_client(target_p);
780 michael 2137 }
781 michael 2141
782 michael 4341 if (!ConfigGeneral.cycle_on_host_change)
783 michael 2283 return;
784    
785 michael 4816 DLINK_FOREACH(node, target_p->channel.head)
786 michael 2141 {
787 michael 3215 char modebuf[4], nickbuf[NICKLEN * 3 + 3] = "";
788 michael 2141 char *p = modebuf;
789     int len = 0;
790 michael 4816 const struct Membership *member = node->data;
791 michael 2141
792 michael 4816 if (has_member_flags(member, CHFL_CHANOP))
793 michael 2283 {
794 michael 2141 *p++ = 'o';
795     len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
796     }
797    
798 michael 4816 if (has_member_flags(member, CHFL_HALFOP))
799 michael 2283 {
800 michael 2141 *p++ = 'h';
801     len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
802     }
803    
804 michael 4816 if (has_member_flags(member, CHFL_VOICE))
805 michael 2283 {
806 michael 2141 *p++ = 'v';
807     len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name);
808     }
809    
810     *p = '\0';
811    
812 michael 4793
813 michael 4945 sendto_channel_local_butone(target_p, CAP_EXTENDED_JOIN, 0, member->chptr, ":%s!%s@%s JOIN %s %s :%s",
814 michael 4793 target_p->name, target_p->username,
815 michael 4816 target_p->host, member->chptr->name,
816 michael 4820 (!IsDigit(target_p->account[0]) && target_p->account[0] != '*') ? target_p->account : "*",
817 michael 4793 target_p->info);
818 michael 4945 sendto_channel_local_butone(target_p, 0, CAP_EXTENDED_JOIN, member->chptr, ":%s!%s@%s JOIN :%s",
819 michael 4793 target_p->name, target_p->username,
820 michael 4816 target_p->host, member->chptr->name);
821 michael 4793
822 michael 2141 if (nickbuf[0])
823 michael 4816 sendto_channel_local_butone(target_p, 0, 0, member->chptr, ":%s MODE %s +%s %s",
824     target_p->servptr->name, member->chptr->name,
825 michael 2141 modebuf, nickbuf);
826    
827     }
828    
829     if (target_p->away[0])
830     sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY,
831     ":%s!%s@%s AWAY :%s",
832     target_p->name, target_p->username,
833     target_p->host, target_p->away);
834 michael 1819 }

Properties

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