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root/svn/ircd-hybrid/branches/8.2.x/src/user.c
Revision: 8888
Committed: Fri Apr 19 16:58:43 2019 UTC (7 years, 3 months ago) by michael
Content type: text/x-csrc
File size: 22820 byte(s)
Log Message:
- user.c:user_set_hostmask(): send CHGHOST to the client whose host gets changed

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 8751 * Copyright (c) 1997-2019 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 michael 7303 #include "conf_gecos.h"
42 michael 1309 #include "log.h"
43 michael 3347 #include "server.h"
44 michael 8213 #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 6186 #include "isupport.h"
53 michael 7106 #include "tls.h"
54 michael 8728 #include "patchlevel.h"
55 adx 30
56 michael 8062 static char umode_buffer[UMODE_MAX_STR];
57 adx 30
58 michael 5393 const struct user_modes *umode_map[256];
59     const struct user_modes umode_tab[] =
60 adx 30 {
61 michael 5393 { 'D', UMODE_DEAF },
62     { 'F', UMODE_FARCONNECT },
63     { 'G', UMODE_SOFTCALLERID },
64     { 'H', UMODE_HIDDEN },
65     { 'R', UMODE_REGONLY },
66     { 'S', UMODE_SSL },
67     { 'W', UMODE_WEBIRC },
68     { 'a', UMODE_ADMIN },
69     { 'b', UMODE_BOTS },
70     { 'c', UMODE_CCONN },
71     { 'd', UMODE_DEBUG },
72     { 'e', UMODE_EXTERNAL },
73     { 'f', UMODE_FULL },
74     { 'g', UMODE_CALLERID },
75     { 'i', UMODE_INVISIBLE },
76     { 'j', UMODE_REJ },
77     { 'k', UMODE_SKILL },
78     { 'l', UMODE_LOCOPS },
79     { 'n', UMODE_NCHANGE },
80     { 'o', UMODE_OPER },
81     { 'p', UMODE_HIDECHANS },
82     { 'q', UMODE_HIDEIDLE },
83     { 'r', UMODE_REGISTERED },
84     { 's', UMODE_SERVNOTICE },
85     { 'u', UMODE_UNAUTH },
86     { 'w', UMODE_WALLOP },
87     { 'y', UMODE_SPY },
88     { '\0', 0 }
89 adx 30 };
90    
91     void
92 michael 6190 user_modes_init(void)
93 adx 30 {
94     char *umode_buffer_ptr = umode_buffer;
95    
96 michael 5393 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
97     {
98     umode_map[tab->c] = tab;
99     *umode_buffer_ptr++ = tab->c;
100     }
101 adx 30
102     *umode_buffer_ptr = '\0';
103     }
104    
105     /* show_lusers()
106     *
107     * inputs - pointer to client
108     * output - NONE
109     * side effects - display to client user counts etc.
110     */
111     void
112 michael 7609 show_lusers(struct Client *client_p)
113 adx 30 {
114 michael 8525 if (ConfigServerHide.hide_servers == 0 || HasUMode(client_p, UMODE_OPER))
115 michael 7964 sendto_one_numeric(client_p, &me, RPL_LUSERCLIENT, (dlink_list_length(&global_client_list) - Count.invisi),
116 michael 4208 Count.invisi, dlink_list_length(&global_server_list));
117 adx 30 else
118 michael 7964 sendto_one_numeric(client_p, &me, RPL_LUSERCLIENT, (dlink_list_length(&global_client_list) - Count.invisi),
119 michael 4723 Count.invisi, 1);
120 adx 30
121 michael 3375 if (Count.oper)
122 michael 7609 sendto_one_numeric(client_p, &me, RPL_LUSEROP, Count.oper);
123 adx 30
124 michael 3375 if (dlink_list_length(&unknown_list))
125 michael 7609 sendto_one_numeric(client_p, &me, RPL_LUSERUNKNOWN, dlink_list_length(&unknown_list));
126 adx 30
127 michael 8438 if (dlink_list_length(channel_get_list()))
128     sendto_one_numeric(client_p, &me, RPL_LUSERCHANNELS, dlink_list_length(channel_get_list()));
129 adx 30
130 michael 8525 if (ConfigServerHide.hide_servers == 0 || HasUMode(client_p, UMODE_OPER))
131 adx 30 {
132 michael 7968 sendto_one_numeric(client_p, &me, RPL_LUSERME, dlink_list_length(&local_client_list), dlink_list_length(&local_server_list));
133     sendto_one_numeric(client_p, &me, RPL_LOCALUSERS, dlink_list_length(&local_client_list), Count.max_loc);
134 michael 8060 sendto_one_numeric(client_p, &me, RPL_GLOBALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
135     sendto_one_numeric(client_p, &me, RPL_STATSCONN, Count.max_loc_con, Count.max_loc, Count.totalrestartcount);
136 adx 30 }
137     else
138     {
139 michael 7964 sendto_one_numeric(client_p, &me, RPL_LUSERME, dlink_list_length(&global_client_list), 0);
140     sendto_one_numeric(client_p, &me, RPL_LOCALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
141 michael 8060 sendto_one_numeric(client_p, &me, RPL_GLOBALUSERS, dlink_list_length(&global_client_list), Count.max_tot);
142 adx 30 }
143     }
144    
145 michael 3272 /* report_and_set_user_flags()
146     *
147 michael 7609 * inputs - pointer to client_p
148 michael 3272 * - pointer to conf for this user
149     * output - NONE
150     * side effects - Report to user any special flags
151     * they are getting, and set them.
152     */
153     static void
154 michael 7609 report_and_set_user_flags(struct Client *client_p, const struct MaskItem *conf)
155 michael 3272 {
156     /* If this user is being spoofed, tell them so */
157     if (IsConfDoSpoofIp(conf))
158 michael 7609 sendto_one_notice(client_p, &me, ":*** Spoofing your IP");
159 michael 3272
160 michael 4855 /* If this user is in the exception class, set it "E lined" */
161 michael 3272 if (IsConfExemptKline(conf))
162     {
163 michael 7609 AddFlag(client_p, FLAGS_EXEMPTKLINE);
164     sendto_one_notice(client_p, &me, ":*** You are exempt from K/D lines");
165 michael 3272 }
166    
167 michael 5986 if (IsConfExemptXline(conf))
168     {
169 michael 7609 AddFlag(client_p, FLAGS_EXEMPTXLINE);
170     sendto_one_notice(client_p, &me, ":*** You are exempt from X lines");
171 michael 5986 }
172    
173 michael 3272 if (IsConfExemptResv(conf))
174     {
175 michael 7609 AddFlag(client_p, FLAGS_EXEMPTRESV);
176     sendto_one_notice(client_p, &me, ":*** You are exempt from resvs");
177 michael 3272 }
178    
179     /* If this user is exempt from user limits set it "F lined" */
180     if (IsConfExemptLimits(conf))
181     {
182 michael 7609 AddFlag(client_p, FLAGS_NOLIMIT);
183     sendto_one_notice(client_p, &me, ":*** You are exempt from user limits");
184 michael 3272 }
185    
186     if (IsConfCanFlood(conf))
187     {
188 michael 7609 AddFlag(client_p, FLAGS_CANFLOOD);
189     sendto_one_notice(client_p, &me, ":*** You are exempt from flood protection");
190 michael 3272 }
191     }
192    
193     /* introduce_client()
194     *
195 michael 7609 * inputs - client_p
196 michael 3272 * output - NONE
197     * side effects - This common function introduces a client to the rest
198     * of the net, either from a local client connect or
199     * from a remote connect.
200     */
201     static void
202 michael 7609 introduce_client(struct Client *client_p)
203 michael 3272 {
204 michael 8058 dlink_node *node;
205 michael 8062 char buf[UMODE_MAX_STR] = "";
206 michael 3272
207 michael 8062 send_umode(client_p, MyConnect(client_p), 0, buf);
208 michael 7609 watch_check_hash(client_p, RPL_LOGON);
209 michael 3272
210 michael 8062 if (buf[0] == '\0')
211 michael 3272 {
212 michael 8062 buf[0] = '+';
213     buf[1] = '\0';
214 michael 3272 }
215    
216 michael 4816 DLINK_FOREACH(node, local_server_list.head)
217 michael 3272 {
218 michael 7609 struct Client *server_p = node->data;
219 michael 3272
220 michael 7609 if (server_p == client_p->from)
221 michael 3272 continue;
222    
223 michael 8213 /* TBR: compatibility mode */
224     if (IsCapable(server_p, CAPAB_RHOST))
225     sendto_one(server_p, ":%s UID %s %u %ju %s %s %s %s %s %s %s :%s",
226     client_p->servptr->id,
227     client_p->name, client_p->hopcount+1,
228     client_p->tsinfo,
229     buf, client_p->username, client_p->host, client_p->realhost,
230     client_p->sockhost, client_p->id,
231     client_p->account,
232     client_p->info);
233     else
234     sendto_one(server_p, ":%s UID %s %u %ju %s %s %s %s %s %s :%s",
235     client_p->servptr->id,
236     client_p->name, client_p->hopcount+1,
237     client_p->tsinfo,
238     buf, client_p->username, client_p->host,
239     client_p->sockhost, client_p->id,
240     client_p->account,
241     client_p->info);
242 michael 3272
243 michael 7609 if (!EmptyString(client_p->certfp))
244     sendto_one(server_p, ":%s CERTFP %s", client_p->id, client_p->certfp);
245 michael 3272 }
246     }
247    
248     /* user_welcome()
249     *
250     * inputs - client pointer to client to welcome
251     * output - NONE
252     * side effects -
253     */
254     static void
255 michael 7609 user_welcome(struct Client *client_p)
256 michael 3272 {
257     static const char built_date[] = __DATE__ " at " __TIME__;
258    
259 michael 7609 if (HasFlag(client_p, FLAGS_SSL))
260 michael 3272 {
261 michael 7609 AddUMode(client_p, UMODE_SSL);
262     sendto_one_notice(client_p, &me, ":*** Connected securely via %s",
263 michael 8338 tls_get_cipher(&client_p->connection->fd->ssl));
264 michael 3272 }
265    
266 michael 7609 sendto_one_numeric(client_p, &me, RPL_WELCOME, ConfigServerInfo.network_name,
267 michael 8254 client_p->name, client_p->username, client_p->realhost);
268 michael 7609 sendto_one_numeric(client_p, &me, RPL_YOURHOST,
269 michael 8728 listener_get_name(client_p->connection->listener), PATCHLEVEL);
270 michael 7609 sendto_one_numeric(client_p, &me, RPL_CREATED, built_date);
271 michael 8728 sendto_one_numeric(client_p, &me, RPL_MYINFO, me.name, PATCHLEVEL, umode_buffer);
272 michael 6253
273 michael 7609 isupport_show(client_p);
274     show_lusers(client_p);
275     motd_signon(client_p);
276 michael 3272 }
277    
278     /* check_xline()
279     *
280     * inputs - pointer to client to test
281     * outupt - 1 if exiting 0 if ok
282     * side effects -
283     */
284 michael 8657 static bool
285 michael 7609 check_xline(struct Client *client_p)
286 michael 3272 {
287 michael 7303 const struct GecosItem *gecos = NULL;
288 michael 3272
289 michael 7609 if (HasFlag(client_p, FLAGS_EXEMPTXLINE))
290 michael 8657 return false;
291 michael 5986
292 michael 7609 if ((gecos = gecos_find(client_p->info, match)))
293 michael 3272 {
294     sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
295     "X-line Rejecting [%s] [%s], user %s [%s]",
296 michael 7609 client_p->info, gecos->reason,
297 michael 7996 client_get_name(client_p, HIDE_IP),
298 michael 7609 client_p->sockhost);
299 michael 3272
300     ++ServerStats.is_ref;
301 michael 7609 exit_client(client_p, "Bad user info");
302 michael 8657 return true;
303 michael 3272 }
304    
305 michael 8657 return false;
306 michael 3272 }
307    
308 michael 3317 /*! \brief This function is called when both NICK and USER messages
309 michael 3316 * have been accepted for the client, in whatever order. Only
310     * after this, is the UID message propagated.
311 michael 7609 * \param client_p Pointer to given client to introduce
312 michael 3316 */
313 adx 30 void
314 michael 7609 register_local_user(struct Client *client_p)
315 adx 30 {
316 michael 1632 const struct MaskItem *conf = NULL;
317 adx 30
318 michael 7609 assert(client_p == client_p->from);
319 michael 8511 assert(client_p->connection->registration == 0);
320 michael 7609 assert(MyConnect(client_p));
321     assert(IsUnknown(client_p));
322 adx 30
323 michael 4341 if (ConfigGeneral.ping_cookie)
324 adx 30 {
325 michael 8556 if (!HasFlag(client_p, FLAGS_PINGSENT) && client_p->connection->random_ping == 0)
326 adx 30 {
327 michael 983 do
328 michael 7609 client_p->connection->random_ping = genrand_int32();
329 michael 8436 while (client_p->connection->random_ping == 0);
330 michael 983
331 michael 7609 sendto_one(client_p, "PING :%u", client_p->connection->random_ping);
332     AddFlag(client_p, FLAGS_PINGSENT);
333 adx 30 return;
334     }
335    
336 michael 7609 if (!HasFlag(client_p, FLAGS_PING_COOKIE))
337 adx 30 return;
338     }
339    
340 michael 8525 if (check_client(client_p) == 0)
341 adx 30 return;
342    
343 michael 7609 conf = client_p->connection->confs.head->data;
344 adx 30
345 michael 7609 if (!HasFlag(client_p, FLAGS_GOTID))
346 adx 30 {
347 michael 3215 char username[USERLEN + 1] = "";
348 adx 30 unsigned int i = 0;
349    
350 michael 1632 if (IsNeedIdentd(conf))
351 adx 30 {
352 michael 896 ++ServerStats.is_ref;
353 michael 7609 sendto_one_notice(client_p, &me, ":*** Notice -- You need to install "
354 michael 3110 "identd to use this server");
355 michael 7609 exit_client(client_p, "Install identd");
356 adx 30 return;
357     }
358    
359 michael 7609 strlcpy(username, client_p->username, sizeof(username));
360 adx 30
361 michael 1632 if (!IsNoTilde(conf))
362 michael 7609 client_p->username[i++] = '~';
363 adx 30
364 michael 6358 for (const char *p = username; *p && i < USERLEN; ++p)
365 michael 7609 client_p->username[i++] = *p;
366 adx 30
367 michael 7609 client_p->username[i] = '\0';
368 adx 30 }
369    
370 michael 3317 /* Password check */
371 michael 1632 if (!EmptyString(conf->passwd))
372 adx 30 {
373 michael 8659 if (match_conf_password(client_p->connection->password, conf) == false)
374 adx 30 {
375 michael 896 ++ServerStats.is_ref;
376 michael 3109
377 michael 7609 sendto_one_numeric(client_p, &me, ERR_PASSWDMISMATCH);
378     exit_client(client_p, "Bad Password");
379 adx 30 return;
380     }
381     }
382    
383 michael 3317 /*
384 michael 7609 * Don't free client_p->connection->password here - it can be required
385 michael 4723 * by masked /stats I if there are auth {} blocks with need_password = no;
386 adx 30 * --adx
387     */
388    
389 michael 3317 /*
390 michael 7609 * Report if user has &^>= etc. and set flags as needed in client_p
391 michael 3317 */
392 michael 7609 report_and_set_user_flags(client_p, conf);
393 adx 30
394 michael 7609 if (IsDead(client_p))
395 michael 980 return;
396    
397 michael 3317 /*
398     * Limit clients -
399 adx 30 * We want to be able to have servers and F-line clients
400     * connect, so save room for "buffer" connections.
401     * Smaller servers may want to decrease this, and it should
402     * probably be just a percentage of the MAXCLIENTS...
403     * -Taner
404     */
405 michael 7968 if ((dlink_list_length(&local_client_list) >= GlobalSetOptions.maxclients + MAX_BUFFER) ||
406     (dlink_list_length(&local_client_list) >= GlobalSetOptions.maxclients && !HasFlag(client_p, FLAGS_NOLIMIT)))
407 adx 30 {
408 michael 1618 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
409 adx 30 "Too many clients, rejecting %s[%s].",
410 michael 7609 client_p->name, client_p->host);
411 michael 896 ++ServerStats.is_ref;
412 michael 7609 exit_client(client_p, "Sorry, server is full - try later");
413 adx 30 return;
414     }
415    
416 michael 8659 if (valid_username(client_p->username, true) == false)
417 adx 30 {
418 michael 3375 char buf[IRCD_BUFSIZE] = "";
419 adx 30
420 michael 1618 sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
421     "Invalid username: %s (%s@%s)",
422 michael 7609 client_p->name, client_p->username, client_p->host);
423 michael 896 ++ServerStats.is_ref;
424 michael 7609 snprintf(buf, sizeof(buf), "Invalid username [%s]", client_p->username);
425     exit_client(client_p, buf);
426 adx 30 return;
427     }
428    
429 michael 7609 if (check_xline(client_p))
430 adx 30 return;
431    
432 michael 7571 const char *id;
433 michael 3215 while (hash_find_id((id = uid_get())))
434 michael 1115 ;
435 michael 573
436 michael 7609 strlcpy(client_p->id, id, sizeof(client_p->id));
437     hash_add_id(client_p);
438 adx 30
439 michael 1618 sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE,
440 michael 1137 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>",
441 michael 8222 client_p->name, client_p->username, client_p->realhost,
442 michael 7609 client_p->sockhost,
443     get_client_class(&client_p->connection->confs),
444     client_p->info, client_p->id);
445 adx 30
446 michael 4341 if (ConfigGeneral.invisible_on_connect)
447 michael 159 {
448 michael 7609 AddUMode(client_p, UMODE_INVISIBLE);
449 michael 980 ++Count.invisi;
450 michael 159 }
451 adx 30
452 michael 7609 assert(client_p->servptr == &me);
453 michael 8525
454 michael 7609 SetClient(client_p);
455 michael 8711 client_p->connection->last_privmsg = CurrentTime;
456    
457 michael 7609 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 7609 assert(dlinkFind(&unknown_list, client_p));
461 michael 1013
462 michael 7609 dlink_move_node(&client_p->connection->lclient_node,
463 michael 1126 &unknown_list, &local_client_list);
464 adx 30
465 michael 7968 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 8000 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 7964 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 7609 user_welcome(client_p);
485 adx 30
486 michael 7609 introduce_client(client_p);
487 adx 30 }
488    
489     /* register_remote_user()
490     *
491 michael 7609 * 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 7609 register_remote_user(struct Client *client_p)
501 adx 30 {
502 michael 7629 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 7609 if (HasFlag(client_p->servptr, FLAGS_SERVICE))
509     AddFlag(client_p, FLAGS_SERVICE);
510 michael 1167
511 michael 7609 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 7964
515     if (dlink_list_length(&global_client_list) > Count.max_tot)
516     Count.max_tot = dlink_list_length(&global_client_list);
517    
518 michael 7609 if (HasFlag(client_p->servptr, FLAGS_EOB))
519 michael 5744 sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
520     "Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>",
521 michael 7609 client_p->servptr->name,
522 michael 8222 client_p->name, client_p->username, client_p->realhost,
523 michael 7609 client_p->sockhost, client_p->info, client_p->id);
524 michael 1976
525 michael 7609 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 michael 8657 bool
538 adx 30 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 8657 return false;
546 adx 30
547 michael 1080 for (; *p; ++p)
548 adx 30 if (!IsHostChar(*p))
549 michael 8657 return false;
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 michael 8657 bool
566 michael 8659 valid_username(const char *username, bool 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 8657 return false;
582 adx 30
583 michael 2067 if (local)
584 adx 30 {
585 michael 6757 unsigned int dots = 0;
586    
587 michael 2067 while (*++p)
588 adx 30 {
589 michael 4341 if (*p == '.' && ConfigGeneral.dots_in_ident)
590 michael 2067 {
591 michael 4341 if (++dots > ConfigGeneral.dots_in_ident)
592 michael 8657 return false;
593 michael 2067 if (!IsUserChar(*(p + 1)))
594 michael 8657 return false;
595 michael 2067 }
596     else if (!IsUserChar(*p))
597 michael 8657 return false;
598 adx 30 }
599     }
600 michael 2067 else
601     {
602     while (*++p)
603     if (!IsUserChar(*p))
604 michael 8657 return false;
605 michael 2067 }
606 adx 30
607 michael 3657 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 michael 8657 bool
618 michael 8659 valid_nickname(const char *nickname, bool local)
619 michael 1165 {
620     const char *p = nickname;
621 michael 3318
622 michael 4983 assert(p);
623 michael 1165
624 michael 3317 /*
625     * Nicks can't start with a digit or - or be 0 length.
626     */
627 michael 4708 if (EmptyString(p) || *p == '-' || (IsDigit(*p) && local))
628 michael 8657 return false;
629 michael 1165
630     for (; *p; ++p)
631     if (!IsNickChar(*p))
632 michael 8657 return false;
633 michael 1165
634 michael 1431 return p - nickname <= NICKLEN;
635 michael 1165 }
636    
637 michael 7598 /*! \brief Builds a mode change string to buffer pointed by \a buf
638     * \param client_p Pointer to client
639 michael 7770 * \param dispatch Whether to send a MODE message to client_p
640 michael 7598 * \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 8657 send_umode(struct Client *client_p, bool dispatch, unsigned int old, char *buf)
645 adx 30 {
646 michael 7598 char *m = buf;
647 adx 30 int what = 0;
648    
649 michael 56 /*
650 michael 3317 * Build a string in umode_buf to represent the change in the user's
651 michael 7609 * mode between the new (client_p->umodes) and 'old'.
652 adx 30 */
653 michael 5393 for (const struct user_modes *tab = umode_tab; tab->c; ++tab)
654 adx 30 {
655 michael 7598 if ((tab->flag & old) && !HasUMode(client_p, tab->flag))
656 adx 30 {
657     if (what == MODE_DEL)
658 michael 5393 *m++ = tab->c;
659 adx 30 else
660     {
661     what = MODE_DEL;
662     *m++ = '-';
663 michael 5393 *m++ = tab->c;
664 adx 30 }
665     }
666 michael 7598 else if (!(tab->flag & old) && HasUMode(client_p, tab->flag))
667 adx 30 {
668     if (what == MODE_ADD)
669 michael 5393 *m++ = tab->c;
670 adx 30 else
671     {
672     what = MODE_ADD;
673     *m++ = '+';
674 michael 5393 *m++ = tab->c;
675 adx 30 }
676     }
677     }
678    
679     *m = '\0';
680    
681 michael 8657 if (dispatch == true && *buf)
682 michael 528 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
683 michael 4705 client_p->name, client_p->username,
684 michael 7598 client_p->host, client_p->name, buf);
685 adx 30 }
686    
687     /* send_umode_out()
688     *
689     * inputs -
690     * output - NONE
691     * side effects - Only send ubuf out to servers that know about this client
692     */
693     void
694 michael 7609 send_umode_out(struct Client *client_p, unsigned int old)
695 adx 30 {
696 michael 8062 char buf[UMODE_MAX_STR] = "";
697 adx 30
698 michael 7609 send_umode(client_p, MyConnect(client_p), old, buf);
699 adx 30
700 michael 573 if (buf[0])
701 michael 7609 sendto_server(client_p, 0, 0, ":%s MODE %s :%s",
702     client_p->id, client_p->id, buf);
703 adx 30 }
704    
705 michael 1819 void
706 michael 8209 user_set_hostmask(struct Client *client_p, const char *hostname)
707 michael 1819 {
708 michael 8058 dlink_node *node;
709 michael 2141
710 michael 8511 if (strcmp(client_p->host, hostname) == 0)
711 michael 2145 return;
712 michael 2141
713 michael 4341 if (ConfigGeneral.cycle_on_host_change)
714 michael 8687 sendto_common_channels_local(client_p, false, 0, CAP_CHGHOST, ":%s!%s@%s QUIT :Changing hostname",
715 michael 7609 client_p->name, client_p->username, client_p->host);
716 michael 2145
717 michael 8888 sendto_common_channels_local(client_p, true, CAP_CHGHOST, 0, ":%s!%s@%s CHGHOST %s %s",
718 michael 7609 client_p->name, client_p->username,
719     client_p->host, client_p->username, hostname);
720 michael 6775
721 michael 7609 strlcpy(client_p->host, hostname, sizeof(client_p->host));
722 michael 2145
723 michael 7609 if (MyConnect(client_p))
724 michael 2137 {
725 michael 7609 sendto_one_numeric(client_p, &me, RPL_VISIBLEHOST, client_p->host);
726 michael 7763 clear_ban_cache_list(&client_p->channel);
727 michael 2137 }
728 michael 2141
729 michael 8511 if (ConfigGeneral.cycle_on_host_change == 0)
730 michael 2283 return;
731    
732 michael 7609 DLINK_FOREACH(node, client_p->channel.head)
733 michael 2141 {
734 michael 6902 char modebuf[CMEMBER_STATUS_FLAGS_LEN + 1];
735     char nickbuf[CMEMBER_STATUS_FLAGS_LEN * NICKLEN + CMEMBER_STATUS_FLAGS_LEN] = "";
736 michael 2141 char *p = modebuf;
737     int len = 0;
738 michael 4816 const struct Membership *member = node->data;
739 michael 2141
740 michael 4816 if (has_member_flags(member, CHFL_CHANOP))
741 michael 2283 {
742 michael 2141 *p++ = 'o';
743 michael 7609 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
744 michael 2141 }
745    
746 michael 4816 if (has_member_flags(member, CHFL_HALFOP))
747 michael 2283 {
748 michael 2141 *p++ = 'h';
749 michael 7609 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
750 michael 2141 }
751    
752 michael 4816 if (has_member_flags(member, CHFL_VOICE))
753 michael 2283 {
754 michael 2141 *p++ = 'v';
755 michael 7609 len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", client_p->name);
756 michael 2141 }
757    
758     *p = '\0';
759    
760 michael 7609 sendto_channel_local(client_p, member->chptr, 0, CAP_EXTENDED_JOIN, CAP_CHGHOST, ":%s!%s@%s JOIN %s %s :%s",
761     client_p->name, client_p->username,
762     client_p->host, member->chptr->name,
763     client_p->account, client_p->info);
764     sendto_channel_local(client_p, member->chptr, 0, 0, CAP_EXTENDED_JOIN | CAP_CHGHOST, ":%s!%s@%s JOIN :%s",
765     client_p->name, client_p->username,
766     client_p->host, member->chptr->name);
767 michael 4793
768 michael 2141 if (nickbuf[0])
769 michael 7609 sendto_channel_local(client_p, member->chptr, 0, 0, CAP_CHGHOST, ":%s MODE %s +%s %s",
770     client_p->servptr->name, member->chptr->name,
771 michael 6760 modebuf, nickbuf);
772 michael 2141 }
773 michael 6778
774 michael 7609 if (client_p->away[0])
775 michael 8687 sendto_common_channels_local(client_p, false, CAP_AWAY_NOTIFY, CAP_CHGHOST,
776 michael 6778 ":%s!%s@%s AWAY :%s",
777 michael 7609 client_p->name, client_p->username,
778     client_p->host, client_p->away);
779 michael 1819 }

Properties

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