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root/svn/ircd-hybrid/trunk/src/user.c
Revision: 8496
Committed: Thu Apr 5 12:46:00 2018 UTC (7 years, 4 months ago) by michael
Content type: text/x-csrc
File size: 22817 byte(s)
Log Message:
- Killed userhost.c. Rewrote everything to use ipcache.c

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 8279 * Copyright (c) 1997-2018 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 4565 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19 adx 30 * USA
20     */
21    
22 michael 5563 /*! \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 6161 #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 michael 7304 #include "conf_gecos.h"
42 michael 1309 #include "log.h"
43 michael 3347 #include "server.h"
44 michael 8214 #include "server_capab.h" /* TBR: RHOST compatibility mode */
45 adx 30 #include "send.h"
46     #include "memory.h"
47     #include "packet.h"
48 michael 982 #include "rng_mt.h"
49 michael 3347 #include "misc.h"
50 michael 1243 #include "parse.h"
51 michael 876 #include "watch.h"
52 michael 6185 #include "isupport.h"
53 michael 7105 #include "tls.h"
54 adx 30
55 michael 8063 static char umode_buffer[UMODE_MAX_STR];
56 adx 30
57 michael 5392 const struct user_modes *umode_map[256];
58     const struct user_modes umode_tab[] =
59 adx 30 {
60 michael 5392 { 'D', UMODE_DEAF },
61     { 'F', UMODE_FARCONNECT },
62     { 'G', UMODE_SOFTCALLERID },
63     { 'H', UMODE_HIDDEN },
64     { 'R', UMODE_REGONLY },
65     { 'S', UMODE_SSL },
66     { 'W', UMODE_WEBIRC },
67     { 'a', UMODE_ADMIN },
68     { 'b', UMODE_BOTS },
69     { 'c', UMODE_CCONN },
70     { 'd', UMODE_DEBUG },
71     { 'e', UMODE_EXTERNAL },
72     { 'f', UMODE_FULL },
73     { 'g', UMODE_CALLERID },
74     { 'i', UMODE_INVISIBLE },
75     { 'j', UMODE_REJ },
76     { 'k', UMODE_SKILL },
77     { 'l', UMODE_LOCOPS },
78     { 'n', UMODE_NCHANGE },
79     { 'o', UMODE_OPER },
80     { 'p', UMODE_HIDECHANS },
81     { 'q', UMODE_HIDEIDLE },
82     { 'r', UMODE_REGISTERED },
83     { 's', UMODE_SERVNOTICE },
84     { 'u', UMODE_UNAUTH },
85     { 'w', UMODE_WALLOP },
86     { 'y', UMODE_SPY },
87     { '\0', 0 }
88 adx 30 };
89    
90     void
91 michael 6189 user_modes_init(void)
92 adx 30 {
93     char *umode_buffer_ptr = umode_buffer;
94    
95 michael 5392 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
96     {
97     umode_map[tab->c] = tab;
98     *umode_buffer_ptr++ = tab->c;
99     }
100 adx 30
101     *umode_buffer_ptr = '\0';
102     }
103    
104     /* show_lusers()
105     *
106     * inputs - pointer to client
107     * output - NONE
108     * side effects - display to client user counts etc.
109     */
110     void
111 michael 7610 show_lusers(struct Client *client_p)
112 adx 30 {
113 michael 7610 if (!ConfigServerHide.hide_servers || HasUMode(client_p, UMODE_OPER))
114 michael 7965 sendto_one_numeric(client_p, &me, RPL_LUSERCLIENT, (dlink_list_length(&global_client_list) - Count.invisi),
115 michael 4209 Count.invisi, dlink_list_length(&global_server_list));
116 adx 30 else
117 michael 7965 sendto_one_numeric(client_p, &me, RPL_LUSERCLIENT, (dlink_list_length(&global_client_list) - Count.invisi),
118 michael 4724 Count.invisi, 1);
119 adx 30
120 michael 3375 if (Count.oper)
121 michael 7610 sendto_one_numeric(client_p, &me, RPL_LUSEROP, Count.oper);
122 adx 30
123 michael 3375 if (dlink_list_length(&unknown_list))
124 michael 7610 sendto_one_numeric(client_p, &me, RPL_LUSERUNKNOWN, dlink_list_length(&unknown_list));
125 adx 30
126 michael 8439 if (dlink_list_length(channel_get_list()))
127     sendto_one_numeric(client_p, &me, RPL_LUSERCHANNELS, dlink_list_length(channel_get_list()));
128 adx 30
129 michael 7610 if (!ConfigServerHide.hide_servers || HasUMode(client_p, UMODE_OPER))
130 adx 30 {
131 michael 7969 sendto_one_numeric(client_p, &me, RPL_LUSERME, dlink_list_length(&local_client_list), dlink_list_length(&local_server_list));
132     sendto_one_numeric(client_p, &me, RPL_LOCALUSERS, dlink_list_length(&local_client_list), Count.max_loc);
133 michael 8061 sendto_one_numeric(client_p, &me, RPL_GLOBALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
134     sendto_one_numeric(client_p, &me, RPL_STATSCONN, Count.max_loc_con, Count.max_loc, Count.totalrestartcount);
135 adx 30 }
136     else
137     {
138 michael 7965 sendto_one_numeric(client_p, &me, RPL_LUSERME, dlink_list_length(&global_client_list), 0);
139     sendto_one_numeric(client_p, &me, RPL_LOCALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
140 michael 8061 sendto_one_numeric(client_p, &me, RPL_GLOBALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
141 adx 30 }
142     }
143    
144 michael 3272 /* report_and_set_user_flags()
145     *
146 michael 7610 * inputs - pointer to client_p
147 michael 3272 * - pointer to conf for this user
148     * output - NONE
149     * side effects - Report to user any special flags
150     * they are getting, and set them.
151     */
152     static void
153 michael 7610 report_and_set_user_flags(struct Client *client_p, const struct MaskItem *conf)
154 michael 3272 {
155     /* If this user is being spoofed, tell them so */
156     if (IsConfDoSpoofIp(conf))
157 michael 7610 sendto_one_notice(client_p, &me, ":*** Spoofing your IP");
158 michael 3272
159 michael 4856 /* If this user is in the exception class, set it "E lined" */
160 michael 3272 if (IsConfExemptKline(conf))
161     {
162 michael 7610 AddFlag(client_p, FLAGS_EXEMPTKLINE);
163     sendto_one_notice(client_p, &me, ":*** You are exempt from K/D lines");
164 michael 3272 }
165    
166 michael 5985 if (IsConfExemptXline(conf))
167     {
168 michael 7610 AddFlag(client_p, FLAGS_EXEMPTXLINE);
169     sendto_one_notice(client_p, &me, ":*** You are exempt from X lines");
170 michael 5985 }
171    
172 michael 3272 if (IsConfExemptResv(conf))
173     {
174 michael 7610 AddFlag(client_p, FLAGS_EXEMPTRESV);
175     sendto_one_notice(client_p, &me, ":*** You are exempt from resvs");
176 michael 3272 }
177    
178     /* If this user is exempt from user limits set it "F lined" */
179     if (IsConfExemptLimits(conf))
180     {
181 michael 7610 AddFlag(client_p, FLAGS_NOLIMIT);
182     sendto_one_notice(client_p, &me, ":*** You are exempt from user limits");
183 michael 3272 }
184    
185     if (IsConfCanFlood(conf))
186     {
187 michael 7610 AddFlag(client_p, FLAGS_CANFLOOD);
188     sendto_one_notice(client_p, &me, ":*** You are exempt from flood protection");
189 michael 3272 }
190     }
191    
192     /* introduce_client()
193     *
194 michael 7610 * inputs - client_p
195 michael 3272 * output - NONE
196     * side effects - This common function introduces a client to the rest
197     * of the net, either from a local client connect or
198     * from a remote connect.
199     */
200     static void
201 michael 7610 introduce_client(struct Client *client_p)
202 michael 3272 {
203 michael 8059 dlink_node *node;
204 michael 8063 char buf[UMODE_MAX_STR] = "";
205 michael 3272
206 michael 8063 send_umode(client_p, MyConnect(client_p), 0, buf);
207 michael 7610 watch_check_hash(client_p, RPL_LOGON);
208 michael 3272
209 michael 8063 if (buf[0] == '\0')
210 michael 3272 {
211 michael 8063 buf[0] = '+';
212     buf[1] = '\0';
213 michael 3272 }
214    
215 michael 4815 DLINK_FOREACH(node, local_server_list.head)
216 michael 3272 {
217 michael 7610 struct Client *server_p = node->data;
218 michael 3272
219 michael 7610 if (server_p == client_p->from)
220 michael 3272 continue;
221    
222 michael 8214 /* TBR: compatibility mode */
223     if (IsCapable(server_p, CAPAB_RHOST))
224     sendto_one(server_p, ":%s UID %s %u %ju %s %s %s %s %s %s %s :%s",
225     client_p->servptr->id,
226     client_p->name, client_p->hopcount+1,
227     client_p->tsinfo,
228     buf, client_p->username, client_p->host, client_p->realhost,
229     client_p->sockhost, client_p->id,
230     client_p->account,
231     client_p->info);
232     else
233     sendto_one(server_p, ":%s UID %s %u %ju %s %s %s %s %s %s :%s",
234     client_p->servptr->id,
235     client_p->name, client_p->hopcount+1,
236     client_p->tsinfo,
237     buf, client_p->username, client_p->host,
238     client_p->sockhost, client_p->id,
239     client_p->account,
240     client_p->info);
241 michael 3272
242 michael 7610 if (!EmptyString(client_p->certfp))
243     sendto_one(server_p, ":%s CERTFP %s", client_p->id, client_p->certfp);
244 michael 3272 }
245     }
246    
247     /* user_welcome()
248     *
249     * inputs - client pointer to client to welcome
250     * output - NONE
251     * side effects -
252     */
253     static void
254 michael 7610 user_welcome(struct Client *client_p)
255 michael 3272 {
256     static const char built_date[] = __DATE__ " at " __TIME__;
257    
258 michael 7610 if (HasFlag(client_p, FLAGS_SSL))
259 michael 3272 {
260 michael 7610 AddUMode(client_p, UMODE_SSL);
261     sendto_one_notice(client_p, &me, ":*** Connected securely via %s",
262 michael 8339 tls_get_cipher(&client_p->connection->fd->ssl));
263 michael 3272 }
264    
265 michael 7610 sendto_one_numeric(client_p, &me, RPL_WELCOME, ConfigServerInfo.network_name,
266 michael 8255 client_p->name, client_p->username, client_p->realhost);
267 michael 7610 sendto_one_numeric(client_p, &me, RPL_YOURHOST,
268     listener_get_name(client_p->connection->listener), ircd_version);
269     sendto_one_numeric(client_p, &me, RPL_CREATED, built_date);
270     sendto_one_numeric(client_p, &me, RPL_MYINFO, me.name, ircd_version, umode_buffer);
271 michael 6252
272 michael 7610 isupport_show(client_p);
273     show_lusers(client_p);
274     motd_signon(client_p);
275 michael 3272 }
276    
277     /* check_xline()
278     *
279     * inputs - pointer to client to test
280     * outupt - 1 if exiting 0 if ok
281     * side effects -
282     */
283     static int
284 michael 7610 check_xline(struct Client *client_p)
285 michael 3272 {
286 michael 7304 const struct GecosItem *gecos = NULL;
287 michael 3272
288 michael 7610 if (HasFlag(client_p, FLAGS_EXEMPTXLINE))
289 michael 5985 return 0;
290    
291 michael 7610 if ((gecos = gecos_find(client_p->info, match)))
292 michael 3272 {
293     sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
294     "X-line Rejecting [%s] [%s], user %s [%s]",
295 michael 7610 client_p->info, gecos->reason,
296 michael 7997 client_get_name(client_p, HIDE_IP),
297 michael 7610 client_p->sockhost);
298 michael 3272
299     ++ServerStats.is_ref;
300 michael 7610 exit_client(client_p, "Bad user info");
301 michael 3272 return 1;
302     }
303    
304     return 0;
305     }
306    
307 michael 3317 /*! \brief This function is called when both NICK and USER messages
308 michael 3316 * have been accepted for the client, in whatever order. Only
309     * after this, is the UID message propagated.
310 michael 7610 * \param client_p Pointer to given client to introduce
311 michael 3316 */
312 adx 30 void
313 michael 7610 register_local_user(struct Client *client_p)
314 adx 30 {
315 michael 1632 const struct MaskItem *conf = NULL;
316 adx 30
317 michael 7610 assert(client_p == client_p->from);
318     assert(MyConnect(client_p));
319     assert(IsUnknown(client_p));
320     assert(!client_p->connection->registration);
321 adx 30
322 michael 4340 if (ConfigGeneral.ping_cookie)
323 adx 30 {
324 michael 7610 if (!HasFlag(client_p, FLAGS_PINGSENT) && !client_p->connection->random_ping)
325 adx 30 {
326 michael 983 do
327 michael 7610 client_p->connection->random_ping = genrand_int32();
328 michael 8437 while (client_p->connection->random_ping == 0);
329 michael 983
330 michael 7610 sendto_one(client_p, "PING :%u", client_p->connection->random_ping);
331     AddFlag(client_p, FLAGS_PINGSENT);
332 adx 30 return;
333     }
334    
335 michael 7610 if (!HasFlag(client_p, FLAGS_PING_COOKIE))
336 adx 30 return;
337     }
338    
339 michael 7610 client_p->connection->last_privmsg = CurrentTime;
340 adx 30 /* Straight up the maximum rate of flooding... */
341 michael 7610 client_p->connection->allow_read = MAX_FLOOD_BURST;
342 adx 30
343 michael 7610 if (!check_client(client_p))
344 adx 30 return;
345    
346 michael 7610 conf = client_p->connection->confs.head->data;
347 adx 30
348 michael 7610 if (!HasFlag(client_p, FLAGS_GOTID))
349 adx 30 {
350 michael 3215 char username[USERLEN + 1] = "";
351 adx 30 unsigned int i = 0;
352    
353 michael 1632 if (IsNeedIdentd(conf))
354 adx 30 {
355 michael 896 ++ServerStats.is_ref;
356 michael 7610 sendto_one_notice(client_p, &me, ":*** Notice -- You need to install "
357 michael 3110 "identd to use this server");
358 michael 7610 exit_client(client_p, "Install identd");
359 adx 30 return;
360     }
361    
362 michael 7610 strlcpy(username, client_p->username, sizeof(username));
363 adx 30
364 michael 1632 if (!IsNoTilde(conf))
365 michael 7610 client_p->username[i++] = '~';
366 adx 30
367 michael 6357 for (const char *p = username; *p && i < USERLEN; ++p)
368 michael 7610 client_p->username[i++] = *p;
369 adx 30
370 michael 7610 client_p->username[i] = '\0';
371 adx 30 }
372    
373 michael 3317 /* Password check */
374 michael 1632 if (!EmptyString(conf->passwd))
375 adx 30 {
376 michael 7610 if (!match_conf_password(client_p->connection->password, conf))
377 adx 30 {
378 michael 896 ++ServerStats.is_ref;
379 michael 3109
380 michael 7610 sendto_one_numeric(client_p, &me, ERR_PASSWDMISMATCH);
381     exit_client(client_p, "Bad Password");
382 adx 30 return;
383     }
384     }
385    
386 michael 3317 /*
387 michael 7610 * Don't free client_p->connection->password here - it can be required
388 michael 4724 * by masked /stats I if there are auth {} blocks with need_password = no;
389 adx 30 * --adx
390     */
391    
392 michael 3317 /*
393 michael 7610 * Report if user has &^>= etc. and set flags as needed in client_p
394 michael 3317 */
395 michael 7610 report_and_set_user_flags(client_p, conf);
396 adx 30
397 michael 7610 if (IsDead(client_p))
398 michael 980 return;
399    
400 michael 3317 /*
401     * Limit clients -
402 adx 30 * We want to be able to have servers and F-line clients
403     * connect, so save room for "buffer" connections.
404     * Smaller servers may want to decrease this, and it should
405     * probably be just a percentage of the MAXCLIENTS...
406     * -Taner
407     */
408 michael 7969 if ((dlink_list_length(&local_client_list) >= GlobalSetOptions.maxclients + MAX_BUFFER) ||
409     (dlink_list_length(&local_client_list) >= GlobalSetOptions.maxclients && !HasFlag(client_p, FLAGS_NOLIMIT)))
410 adx 30 {
411 michael 1618 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
412 adx 30 "Too many clients, rejecting %s[%s].",
413 michael 7610 client_p->name, client_p->host);
414 michael 896 ++ServerStats.is_ref;
415 michael 7610 exit_client(client_p, "Sorry, server is full - try later");
416 adx 30 return;
417     }
418    
419 michael 7610 if (!valid_username(client_p->username, 1))
420 adx 30 {
421 michael 3375 char buf[IRCD_BUFSIZE] = "";
422 adx 30
423 michael 1618 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
424     "Invalid username: %s (%s@%s)",
425 michael 7610 client_p->name, client_p->username, client_p->host);
426 michael 896 ++ServerStats.is_ref;
427 michael 7610 snprintf(buf, sizeof(buf), "Invalid username [%s]", client_p->username);
428     exit_client(client_p, buf);
429 adx 30 return;
430     }
431    
432 michael 7610 if (check_xline(client_p))
433 adx 30 return;
434    
435 michael 7570 const char *id;
436 michael 3215 while (hash_find_id((id = uid_get())))
437 michael 1115 ;
438 michael 573
439 michael 7610 strlcpy(client_p->id, id, sizeof(client_p->id));
440     hash_add_id(client_p);
441 adx 30
442 michael 1618 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
443 michael 1137 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
444 michael 8223 client_p->name, client_p->username, client_p->realhost,
445 michael 7610 client_p->sockhost,
446     get_client_class(&client_p->connection->confs),
447     client_p->info, client_p->id);
448 adx 30
449 michael 4340 if (ConfigGeneral.invisible_on_connect)
450 michael 159 {
451 michael 7610 AddUMode(client_p, UMODE_INVISIBLE);
452 michael 980 ++Count.invisi;
453 michael 159 }
454 adx 30
455 michael 7610 assert(client_p->servptr == &me);
456     SetClient(client_p);
457     dlinkAdd(client_p, &client_p->lnode, &client_p->servptr->serv->client_list);
458     dlinkAdd(client_p, &client_p->node, &global_client_list);
459 michael 1080
460 michael 7610 assert(dlinkFind(&unknown_list, client_p));
461 michael 1013
462 michael 7610 dlink_move_node(&client_p->connection->lclient_node,
463 michael 1126 &unknown_list, &local_client_list);
464 adx 30
465 michael 7969 if (dlink_list_length(&local_client_list) > Count.max_loc)
466     {
467     Count.max_loc = dlink_list_length(&local_client_list);
468    
469     if (!(Count.max_loc % 10))
470     sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
471     "New maximum local client connections: %u",
472     Count.max_loc);
473     }
474    
475 michael 8001 if ((dlink_list_length(&local_client_list) +
476     dlink_list_length(&local_server_list)) > Count.max_loc_con)
477     Count.max_loc_con = dlink_list_length(&local_client_list) +
478     dlink_list_length(&local_server_list);
479    
480 michael 7965 if (dlink_list_length(&global_client_list) > Count.max_tot)
481     Count.max_tot = dlink_list_length(&global_client_list);
482     ++Count.totalrestartcount;
483    
484 michael 7610 user_welcome(client_p);
485 adx 30
486 michael 7610 introduce_client(client_p);
487 adx 30 }
488    
489     /* register_remote_user()
490     *
491 michael 7610 * inputs - client_p remote or directly connected client
492 adx 30 * - username to register as
493     * - host name to register as
494     * - server name
495     * output - NONE
496     * side effects - This function is called when a remote client
497     * is introduced by a server.
498     */
499     void
500 michael 7610 register_remote_user(struct Client *client_p)
501 adx 30 {
502 michael 7630 assert(client_p->servptr->from == client_p->from);
503 adx 30
504 michael 1167 /*
505     * If the nick has been introduced by a services server,
506     * make it a service as well.
507     */
508 michael 7610 if (HasFlag(client_p->servptr, FLAGS_SERVICE))
509     AddFlag(client_p, FLAGS_SERVICE);
510 michael 1167
511 michael 7610 SetClient(client_p);
512     dlinkAdd(client_p, &client_p->lnode, &client_p->servptr->serv->client_list);
513     dlinkAdd(client_p, &client_p->node, &global_client_list);
514 michael 7965
515     if (dlink_list_length(&global_client_list) > Count.max_tot)
516     Count.max_tot = dlink_list_length(&global_client_list);
517    
518 michael 7610 if (HasFlag(client_p->servptr, FLAGS_EOB))
519 michael 5743 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
520     "Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>",
521 michael 7610 client_p->servptr->name,
522 michael 8223 client_p->name, client_p->username, client_p->realhost,
523 michael 7610 client_p->sockhost, client_p->info, client_p->id);
524 michael 1976
525 michael 7610 introduce_client(client_p);
526 adx 30 }
527    
528     /* valid_hostname()
529     *
530     * Inputs - pointer to hostname
531     * Output - 1 if valid, 0 if not
532     * Side effects - check hostname for validity
533     *
534     * NOTE: this doesn't allow a hostname to begin with a dot and
535     * will not allow more dots than chars.
536     */
537     int
538     valid_hostname(const char *hostname)
539     {
540     const char *p = hostname;
541    
542 michael 3235 assert(p);
543 adx 30
544 michael 2352 if (EmptyString(p) || *p == '.' || *p == ':')
545 michael 56 return 0;
546 adx 30
547 michael 1080 for (; *p; ++p)
548 adx 30 if (!IsHostChar(*p))
549 michael 56 return 0;
550 adx 30
551 michael 1795 return p - hostname <= HOSTLEN;
552 adx 30 }
553    
554     /* valid_username()
555     *
556     * Inputs - pointer to user
557     * Output - 1 if valid, 0 if not
558     * Side effects - check username for validity
559     *
560     * Absolutely always reject any '*' '!' '?' '@' in an user name
561     * reject any odd control characters names.
562     * Allow '.' in username to allow for "first.last"
563     * style of username
564     */
565     int
566 michael 2069 valid_username(const char *username, const int local)
567 adx 30 {
568     const char *p = username;
569    
570 michael 3235 assert(p);
571 adx 30
572 michael 1080 if (*p == '~')
573 adx 30 ++p;
574    
575 michael 2067 /*
576     * Reject usernames that don't start with an alphanum
577 adx 30 * i.e. reject jokers who have '-@somehost' or '.@somehost'
578     * or "-hi-@somehost", "h-----@somehost" would still be accepted.
579     */
580     if (!IsAlNum(*p))
581 michael 56 return 0;
582 adx 30
583 michael 2067 if (local)
584 adx 30 {
585 michael 6756 unsigned int dots = 0;
586    
587 michael 2067 while (*++p)
588 adx 30 {
589 michael 4340 if (*p == '.' && ConfigGeneral.dots_in_ident)
590 michael 2067 {
591 michael 4340 if (++dots > ConfigGeneral.dots_in_ident)
592 michael 2067 return 0;
593     if (!IsUserChar(*(p + 1)))
594     return 0;
595     }
596     else if (!IsUserChar(*p))
597 michael 56 return 0;
598 adx 30 }
599     }
600 michael 2067 else
601     {
602     while (*++p)
603     if (!IsUserChar(*p))
604     return 0;
605     }
606 adx 30
607 michael 3656 return p - username <= USERLEN;
608 adx 30 }
609    
610 michael 1165 /* clean_nick_name()
611     *
612     * input - nickname
613     * - whether it's a local nick (1) or remote (0)
614     * output - none
615     * side effects - walks through the nickname, returning 0 if erroneous
616     */
617     int
618     valid_nickname(const char *nickname, const int local)
619     {
620     const char *p = nickname;
621 michael 3318
622 michael 4982 assert(p);
623 michael 1165
624 michael 3317 /*
625     * Nicks can't start with a digit or - or be 0 length.
626     */
627 michael 4709 if (EmptyString(p) || *p == '-' || (IsDigit(*p) && local))
628 michael 1165 return 0;
629    
630     for (; *p; ++p)
631     if (!IsNickChar(*p))
632     return 0;
633    
634 michael 1431 return p - nickname <= NICKLEN;
635 michael 1165 }
636    
637 michael 7599 /*! \brief Builds a mode change string to buffer pointed by \a buf
638     * \param client_p Pointer to client
639 michael 7771 * \param dispatch Whether to send a MODE message to client_p
640 michael 7599 * \param old Old user mode to compare against when building new mode buffer
641     * \param buf Pointer to buffer to build string in
642 adx 30 */
643     void
644 michael 7771 send_umode(struct Client *client_p, unsigned int dispatch,
645 michael 7599 unsigned int old, char *buf)
646 adx 30 {
647 michael 7599 char *m = buf;
648 adx 30 int what = 0;
649    
650 michael 56 /*
651 michael 3317 * Build a string in umode_buf to represent the change in the user's
652 michael 7610 * mode between the new (client_p->umodes) and 'old'.
653 adx 30 */
654 michael 5392 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
655 adx 30 {
656 michael 7599 if ((tab->flag & old) && !HasUMode(client_p, tab->flag))
657 adx 30 {
658     if (what == MODE_DEL)
659 michael 5392 *m++ = tab->c;
660 adx 30 else
661     {
662     what = MODE_DEL;
663     *m++ = '-';
664 michael 5392 *m++ = tab->c;
665 adx 30 }
666     }
667 michael 7599 else if (!(tab->flag & old) && HasUMode(client_p, tab->flag))
668 adx 30 {
669     if (what == MODE_ADD)
670 michael 5392 *m++ = tab->c;
671 adx 30 else
672     {
673     what = MODE_ADD;
674     *m++ = '+';
675 michael 5392 *m++ = tab->c;
676 adx 30 }
677     }
678     }
679    
680     *m = '\0';
681    
682 michael 7771 if (dispatch && *buf)
683 michael 528 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
684 michael 4704 client_p->name, client_p->username,
685 michael 7599 client_p->host, client_p->name, buf);
686 adx 30 }
687    
688     /* send_umode_out()
689     *
690     * inputs -
691     * output - NONE
692     * side effects - Only send ubuf out to servers that know about this client
693     */
694     void
695 michael 7610 send_umode_out(struct Client *client_p, unsigned int old)
696 adx 30 {
697 michael 8063 char buf[UMODE_MAX_STR] = "";
698 adx 30
699 michael 7610 send_umode(client_p, MyConnect(client_p), old, buf);
700 adx 30
701 michael 573 if (buf[0])
702 michael 7610 sendto_server(client_p, 0, 0, ":%s MODE %s :%s",
703     client_p->id, client_p->id, buf);
704 adx 30 }
705    
706 michael 1819 void
707 michael 8210 user_set_hostmask(struct Client *client_p, const char *hostname)
708 michael 1819 {
709 michael 8059 dlink_node *node;
710 michael 2141
711 michael 7610 if (!strcmp(client_p->host, hostname))
712 michael 2145 return;
713 michael 2141
714 michael 4340 if (ConfigGeneral.cycle_on_host_change)
715 michael 7610 sendto_common_channels_local(client_p, 0, 0, CAP_CHGHOST, ":%s!%s@%s QUIT :Changing hostname",
716     client_p->name, client_p->username, client_p->host);
717 michael 2145
718 michael 7610 sendto_common_channels_local(client_p, 0, CAP_CHGHOST, 0, ":%s!%s@%s CHGHOST %s %s",
719     client_p->name, client_p->username,
720     client_p->host, client_p->username, hostname);
721 michael 6774
722 michael 7610 strlcpy(client_p->host, hostname, sizeof(client_p->host));
723 michael 2145
724 michael 7610 if (MyConnect(client_p))
725 michael 2137 {
726 michael 7610 sendto_one_numeric(client_p, &me, RPL_VISIBLEHOST, client_p->host);
727 michael 7764 clear_ban_cache_list(&client_p->channel);
728 michael 2137 }
729 michael 2141
730 michael 4340 if (!ConfigGeneral.cycle_on_host_change)
731 michael 2283 return;
732    
733 michael 7610 DLINK_FOREACH(node, client_p->channel.head)
734 michael 2141 {
735 michael 6904 char modebuf[CMEMBER_STATUS_FLAGS_LEN + 1];
736     char nickbuf[CMEMBER_STATUS_FLAGS_LEN * NICKLEN + CMEMBER_STATUS_FLAGS_LEN] = "";
737 michael 2141 char *p = modebuf;
738     int len = 0;
739 michael 4815 const struct Membership *member = node->data;
740 michael 2141
741 michael 4815 if (has_member_flags(member, CHFL_CHANOP))
742 michael 2283 {
743 michael 2141 *p++ = 'o';
744 michael 7610 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
745 michael 2141 }
746    
747 michael 4815 if (has_member_flags(member, CHFL_HALFOP))
748 michael 2283 {
749 michael 2141 *p++ = 'h';
750 michael 7610 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
751 michael 2141 }
752    
753 michael 4815 if (has_member_flags(member, CHFL_VOICE))
754 michael 2283 {
755 michael 2141 *p++ = 'v';
756 michael 7610 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
757 michael 2141 }
758    
759     *p = '\0';
760    
761 michael 7610 sendto_channel_local(client_p, member->chptr, 0, CAP_EXTENDED_JOIN, CAP_CHGHOST, ":%s!%s@%s JOIN %s %s :%s",
762     client_p->name, client_p->username,
763     client_p->host, member->chptr->name,
764     client_p->account, client_p->info);
765     sendto_channel_local(client_p, member->chptr, 0, 0, CAP_EXTENDED_JOIN | CAP_CHGHOST, ":%s!%s@%s JOIN :%s",
766     client_p->name, client_p->username,
767     client_p->host, member->chptr->name);
768 michael 4792
769 michael 2141 if (nickbuf[0])
770 michael 7610 sendto_channel_local(client_p, member->chptr, 0, 0, CAP_CHGHOST, ":%s MODE %s +%s %s",
771     client_p->servptr->name, member->chptr->name,
772 michael 6759 modebuf, nickbuf);
773 michael 2141 }
774 michael 6777
775 michael 7610 if (client_p->away[0])
776     sendto_common_channels_local(client_p, 0, CAP_AWAY_NOTIFY, CAP_CHGHOST,
777 michael 6777 ":%s!%s@%s AWAY :%s",
778 michael 7610 client_p->name, client_p->username,
779     client_p->host, client_p->away);
780 michael 1819 }

Properties

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