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root/svn/ircd-hybrid/branches/8.2.x/src/user.c
Revision: 528
Committed: Sat Mar 18 15:13:11 2006 UTC (18 years ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid-7.2/src/s_user.c
File size: 43064 byte(s)
Log Message:
- Added missing !u@h prefix when sending MODE message back to a client

File Contents

# User Rev Content
1 adx 30 /*
2     * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3     * s_user.c: User related functions.
4     *
5     * Copyright (C) 2002 by the past and present ircd coders, and others.
6     *
7     * This program is free software; you can redistribute it and/or modify
8     * it under the terms of the GNU General Public License as published by
9     * the Free Software Foundation; either version 2 of the License, or
10     * (at your option) any later version.
11     *
12     * This program is distributed in the hope that it will be useful,
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15     * GNU General Public License for more details.
16     *
17     * You should have received a copy of the GNU General Public License
18     * along with this program; if not, write to the Free Software
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20     * USA
21     *
22 knight 31 * $Id$
23 adx 30 */
24    
25     #include "stdinc.h"
26     #include "tools.h"
27     #include "s_user.h"
28     #include "s_misc.h"
29     #include "channel.h"
30     #include "channel_mode.h"
31     #include "client.h"
32     #include "common.h"
33     #include "fdlist.h"
34     #include "hash.h"
35     #include "irc_string.h"
36     #include "sprintf_irc.h"
37     #include "s_bsd.h"
38     #include "irc_getnameinfo.h"
39     #include "ircd.h"
40     #include "list.h"
41     #include "listener.h"
42     #include "motd.h"
43     #include "numeric.h"
44     #include "s_conf.h"
45     #include "s_log.h"
46     #include "s_serv.h"
47     #include "s_stats.h"
48     #include "send.h"
49     #include "supported.h"
50     #include "whowas.h"
51     #include "memory.h"
52     #include "packet.h"
53     #include "userhost.h"
54     #include "hook.h"
55     #include "s_misc.h"
56     #include "msg.h"
57     #include "pcre.h"
58    
59     int MaxClientCount = 1;
60     int MaxConnectionCount = 1;
61     struct Callback *entering_umode_cb = NULL;
62     struct Callback *umode_cb = NULL;
63     struct Callback *uid_get_cb = NULL;
64    
65     static char umode_buffer[IRCD_BUFSIZE];
66    
67     static void user_welcome(struct Client *);
68     static void report_and_set_user_flags(struct Client *, const struct AccessItem *);
69     static int check_xline(struct Client *);
70     static int check_regexp_xline(struct Client *);
71     static void introduce_client(struct Client *, struct Client *);
72     static void *uid_get(va_list);
73    
74     /* Used for building up the isupport string,
75     * used with init_isupport, add_isupport, delete_isupport
76     */
77    
78     struct Isupport
79     {
80     dlink_node node;
81     char *name;
82     char *options;
83     int number;
84     };
85    
86     static dlink_list support_list = { NULL, NULL, 0 };
87     MessageFile *isupportFile;
88    
89     /* memory is cheap. map 0-255 to equivalent mode */
90     unsigned int user_modes[256] =
91     {
92     /* 0x00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x0F */
93     /* 0x10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x1F */
94     /* 0x20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x2F */
95     /* 0x30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x3F */
96     0, /* @ */
97     0, /* A */
98     0, /* B */
99     0, /* C */
100     UMODE_DEAF, /* D */
101     0, /* E */
102     0, /* F */
103     UMODE_SOFTCALLERID, /* G */
104     0, /* H */
105     0, /* I */
106     0, /* J */
107     0, /* K */
108     0, /* L */
109     0, /* M */
110     0, /* N */
111     0, /* O */
112     0, /* P */
113     0, /* Q */
114     0, /* R */
115     0, /* S */
116     0, /* T */
117     0, /* U */
118     0, /* V */
119     0, /* W */
120     0, /* X */
121     0, /* Y */
122     0, /* Z 0x5A */
123     0, 0, 0, 0, 0, /* 0x5F */
124     0, /* 0x60 */
125     UMODE_ADMIN, /* a */
126     UMODE_BOTS, /* b */
127     UMODE_CCONN, /* c */
128     UMODE_DEBUG, /* d */
129     0, /* e */
130     UMODE_FULL, /* f */
131     UMODE_CALLERID, /* g */
132     0, /* h */
133     UMODE_INVISIBLE, /* i */
134     0, /* j */
135     UMODE_SKILL, /* k */
136     UMODE_LOCOPS, /* l */
137     0, /* m */
138     UMODE_NCHANGE, /* n */
139     UMODE_OPER, /* o */
140     0, /* p */
141     0, /* q */
142     UMODE_REJ, /* r */
143     UMODE_SERVNOTICE, /* s */
144     0, /* t */
145     UMODE_UNAUTH, /* u */
146     0, /* v */
147     UMODE_WALLOP, /* w */
148     UMODE_EXTERNAL, /* x */
149     UMODE_SPY, /* y */
150     UMODE_OPERWALL, /* z 0x7A */
151     0,0,0,0,0, /* 0x7B - 0x7F */
152    
153     /* 0x80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x8F */
154     /* 0x90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x9F */
155     /* 0xA0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xAF */
156     /* 0xB0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xBF */
157     /* 0xC0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xCF */
158     /* 0xD0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xDF */
159     /* 0xE0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xEF */
160     /* 0xF0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* 0xFF */
161     };
162    
163     void
164     assemble_umode_buffer(void)
165     {
166     unsigned int idx = 0;
167     char *umode_buffer_ptr = umode_buffer;
168    
169     for (; idx < (sizeof(user_modes) / sizeof(int)); ++idx)
170     if (user_modes[idx])
171     *umode_buffer_ptr++ = idx;
172    
173     *umode_buffer_ptr = '\0';
174     }
175    
176     /* show_lusers()
177     *
178     * inputs - pointer to client
179     * output - NONE
180     * side effects - display to client user counts etc.
181     */
182     void
183     show_lusers(struct Client *source_p)
184     {
185     const char *from, *to;
186    
187     if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
188     {
189     from = me.id;
190     to = source_p->id;
191     }
192     else
193     {
194     from = me.name;
195     to = source_p->name;
196     }
197    
198     if (!ConfigServerHide.hide_servers || IsOper(source_p))
199     sendto_one(source_p, form_str(RPL_LUSERCLIENT),
200     from, to, (Count.total-Count.invisi),
201     Count.invisi, dlink_list_length(&global_serv_list));
202     else
203     sendto_one(source_p, form_str(RPL_LUSERCLIENT), from, to,
204 michael 56 (Count.total-Count.invisi), Count.invisi, 1);
205 adx 30
206     if (Count.oper > 0)
207     sendto_one(source_p, form_str(RPL_LUSEROP),
208 michael 56 from, to, Count.oper);
209 adx 30
210     if (dlink_list_length(&unknown_list) > 0)
211     sendto_one(source_p, form_str(RPL_LUSERUNKNOWN),
212 michael 56 from, to, dlink_list_length(&unknown_list));
213 adx 30
214     if (dlink_list_length(&global_channel_list) > 0)
215     sendto_one(source_p, form_str(RPL_LUSERCHANNELS),
216 michael 56 from, to, dlink_list_length(&global_channel_list));
217 adx 30
218     if (!ConfigServerHide.hide_servers || IsOper(source_p))
219     {
220     sendto_one(source_p, form_str(RPL_LUSERME),
221 michael 56 from, to, Count.local, Count.myserver);
222 adx 30 sendto_one(source_p, form_str(RPL_LOCALUSERS),
223 michael 56 from, to, Count.local, Count.max_loc,
224     Count.local, Count.max_loc);
225 adx 30 }
226     else
227     {
228     sendto_one(source_p, form_str(RPL_LUSERME),
229 michael 56 from, to, Count.total, 0);
230 adx 30 sendto_one(source_p, form_str(RPL_LOCALUSERS),
231 michael 56 from, to, Count.total, Count.max_tot,
232 adx 30 Count.total, Count.max_tot);
233     }
234    
235     sendto_one(source_p, form_str(RPL_GLOBALUSERS),
236     from, to, Count.total, Count.max_tot,
237     Count.total, Count.max_tot);
238    
239     if (!ConfigServerHide.hide_servers || IsOper(source_p))
240     sendto_one(source_p, form_str(RPL_STATSCONN), from, to,
241 michael 56 MaxConnectionCount, MaxClientCount, Count.totalrestartcount);
242 adx 30
243     if (Count.local > MaxClientCount)
244     MaxClientCount = Count.local;
245    
246     if ((Count.local + Count.myserver) > MaxConnectionCount)
247     MaxConnectionCount = Count.local + Count.myserver;
248     }
249    
250     /* show_isupport()
251     *
252     * inputs - pointer to client
253     * output - NONE
254     * side effects - display to client what we support (for them)
255     */
256     void
257     show_isupport(struct Client *source_p)
258     {
259     send_message_file(source_p, isupportFile);
260     }
261    
262     /*
263     ** register_local_user
264     ** This function is called when both NICK and USER messages
265     ** have been accepted for the client, in whatever order. Only
266     ** after this, is the USER message propagated.
267     **
268     ** NICK's must be propagated at once when received, although
269     ** it would be better to delay them too until full info is
270     ** available. Doing it is not so simple though, would have
271     ** to implement the following:
272     **
273     ** (actually it has been implemented already for a while) -orabidoo
274     **
275     ** 1) user telnets in and gives only "NICK foobar" and waits
276     ** 2) another user far away logs in normally with the nick
277     ** "foobar" (quite legal, as this server didn't propagate
278     ** it).
279     ** 3) now this server gets nick "foobar" from outside, but
280     ** has alread the same defined locally. Current server
281     ** would just issue "KILL foobar" to clean out dups. But,
282     ** this is not fair. It should actually request another
283     ** nick from local user or kill him/her...
284     */
285     void
286     register_local_user(struct Client *client_p, struct Client *source_p,
287     const char *nick, const char *username)
288     {
289     const struct AccessItem *aconf = NULL;
290     char ipaddr[HOSTIPLEN];
291 michael 56 dlink_node *ptr = NULL;
292     dlink_node *m = NULL;
293 adx 30
294     assert(source_p != NULL);
295     assert(MyConnect(source_p));
296     assert(source_p->username != username);
297 michael 503 assert(!source_p->localClient->registration);
298 adx 30
299     if (ConfigFileEntry.ping_cookie)
300     {
301     if (!IsPingSent(source_p) &&
302     source_p->localClient->random_ping == 0)
303     {
304     source_p->localClient->random_ping = (unsigned long)rand();
305     sendto_one(source_p, "PING :%lu",
306     source_p->localClient->random_ping);
307     SetPingSent(source_p);
308     return;
309     }
310    
311     if (!HasPingCookie(source_p))
312     return;
313     }
314    
315     source_p->localClient->last = CurrentTime;
316     /* Straight up the maximum rate of flooding... */
317     source_p->localClient->allow_read = MAX_FLOOD_BURST;
318    
319     if (!execute_callback(client_check_cb, source_p, username))
320     return;
321    
322     if (valid_hostname(source_p->host) == 0)
323     {
324     sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You have an illegal "
325     "character in your hostname", me.name, source_p->name);
326     strlcpy(source_p->host, source_p->sockhost,
327     sizeof(source_p->host));
328     }
329    
330     ptr = source_p->localClient->confs.head;
331     aconf = map_to_conf(ptr->data);
332    
333     if (!IsGotId(source_p))
334     {
335     const char *p = NULL;
336     unsigned int i = 0;
337    
338     if (IsNeedIdentd(aconf))
339     {
340     ServerStats->is_ref++;
341     sendto_one(source_p, ":%s NOTICE %s :*** Notice -- You need to install "
342     "identd to use this server", me.name, source_p->name);
343     exit_client(source_p, &me, "Install identd");
344     return;
345     }
346    
347     p = username;
348    
349     if (!IsNoTilde(aconf))
350     source_p->username[i++] = '~';
351    
352     while (*p && i < USERLEN)
353     {
354     if (*p != '[')
355     source_p->username[i++] = *p;
356     p++;
357     }
358    
359     source_p->username[i] = '\0';
360     }
361    
362     /* password check */
363     if (!EmptyString(aconf->passwd))
364     {
365     const char *pass = source_p->localClient->passwd;
366    
367     if (!match_conf_password(pass, aconf))
368     {
369     ServerStats->is_ref++;
370     sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
371     me.name, source_p->name);
372     exit_client(source_p, &me, "Bad Password");
373     return;
374     }
375     }
376    
377     /* don't free source_p->localClient->passwd here - it can be required
378     * by masked /stats I if there are auth{} blocks with need_password = no;
379     * --adx
380     */
381    
382     /* report if user has &^>= etc. and set flags as needed in source_p */
383     report_and_set_user_flags(source_p, aconf);
384    
385     /* Limit clients -
386     * We want to be able to have servers and F-line clients
387     * connect, so save room for "buffer" connections.
388     * Smaller servers may want to decrease this, and it should
389     * probably be just a percentage of the MAXCLIENTS...
390     * -Taner
391     */
392     /* Except "F:" clients */
393     if ((Count.local >= ServerInfo.max_clients + MAX_BUFFER) ||
394     (Count.local >= ServerInfo.max_clients && !IsExemptLimits(source_p)))
395     {
396     sendto_realops_flags(UMODE_FULL, L_ALL,
397     "Too many clients, rejecting %s[%s].",
398     nick, source_p->host);
399     ServerStats->is_ref++;
400     exit_client(source_p, &me, "Sorry, server is full - try later");
401     return;
402     }
403    
404     /* valid user name check */
405     if (valid_username(source_p->username) == 0)
406     {
407     char tmpstr2[IRCD_BUFSIZE];
408    
409     sendto_realops_flags(UMODE_REJ, L_ALL, "Invalid username: %s (%s@%s)",
410     nick, source_p->username, source_p->host);
411     ServerStats->is_ref++;
412     ircsprintf(tmpstr2, "Invalid username [%s]", source_p->username);
413     exit_client(source_p, &me, tmpstr2);
414     return;
415     }
416    
417     assert(source_p == client_p);
418    
419     /* end of valid user name check */
420     if (check_xline(source_p) || check_regexp_xline(source_p))
421     return;
422    
423     if (IsDead(client_p))
424     return;
425    
426     if (source_p->id[0] == '\0' && me.id[0])
427     {
428 michael 159 char *id = (char *)execute_callback(uid_get_cb, source_p);
429 adx 30 while (hash_find_id(id) != NULL)
430     id = uid_get(NULL);
431    
432     strlcpy(source_p->id, id, sizeof(source_p->id));
433     hash_add_id(source_p);
434     }
435    
436     irc_getnameinfo((struct sockaddr *)&source_p->localClient->ip,
437     source_p->localClient->ip.ss_len, ipaddr,
438     HOSTIPLEN, NULL, 0, NI_NUMERICHOST);
439    
440     sendto_realops_flags(UMODE_CCONN, L_ALL,
441     "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
442     nick, source_p->username, source_p->host,
443     ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ?
444     "255.255.255.255" : ipaddr, get_client_class(source_p),
445     source_p->info);
446    
447     /* If they have died in send_* don't do anything. */
448     if (IsDead(source_p))
449     return;
450    
451     if (ConfigFileEntry.invisible_on_connect)
452 michael 159 {
453 adx 30 source_p->umodes |= UMODE_INVISIBLE;
454 michael 159 Count.invisi++;
455     }
456 adx 30
457     if ((++Count.local) > Count.max_loc)
458     {
459     Count.max_loc = Count.local;
460    
461     if (!(Count.max_loc % 10))
462     sendto_realops_flags(UMODE_ALL, L_ALL, "New Max Local Clients: %d",
463     Count.max_loc);
464     }
465    
466     SetClient(source_p);
467    
468     source_p->servptr = &me;
469     dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
470    
471     /* Increment our total user count here */
472     if (++Count.total > Count.max_tot)
473     Count.max_tot = Count.total;
474     Count.totalrestartcount++;
475    
476     source_p->localClient->allow_read = MAX_FLOOD_BURST;
477    
478     if ((m = dlinkFindDelete(&unknown_list, source_p)) != NULL)
479     {
480     free_dlink_node(m);
481     dlinkAdd(source_p, &source_p->localClient->lclient_node, &local_client_list);
482     }
483     else assert(0);
484    
485     user_welcome(source_p);
486     add_user_host(source_p->username, source_p->host, 0);
487     SetUserHost(source_p);
488    
489     introduce_client(client_p, source_p);
490     }
491    
492     /* register_remote_user()
493     *
494     * inputs - client_p directly connected client
495     * - source_p remote or directly connected client
496     * - username to register as
497     * - host name to register as
498     * - server name
499     * - realname (gecos)
500     * output - NONE
501     * side effects - This function is called when a remote client
502     * is introduced by a server.
503     */
504     void
505     register_remote_user(struct Client *client_p, struct Client *source_p,
506 michael 56 const char *username, const char *host, const char *server,
507     const char *realname)
508 adx 30 {
509 michael 56 struct Client *target_p = NULL;
510 adx 30
511     assert(source_p != NULL);
512     assert(source_p->username != username);
513    
514     strlcpy(source_p->host, host, sizeof(source_p->host));
515     strlcpy(source_p->info, realname, sizeof(source_p->info));
516     strlcpy(source_p->username, username, sizeof(source_p->username));
517    
518     /*
519     * coming from another server, take the servers word for it
520     */
521     source_p->servptr = find_server(server);
522    
523     /* Super GhostDetect:
524     * If we can't find the server the user is supposed to be on,
525     * then simply blow the user away. -Taner
526     */
527     if (source_p->servptr == NULL)
528     {
529     sendto_realops_flags(UMODE_ALL, L_ALL,
530     "No server %s for user %s[%s@%s] from %s",
531     server, source_p->name, source_p->username,
532     source_p->host, source_p->from->name);
533     kill_client(client_p, source_p, "%s (Server doesn't exist)", me.name);
534    
535     SetKilled(source_p);
536     exit_client(source_p, &me, "Ghosted Client");
537     return;
538     }
539    
540     if ((target_p = source_p->servptr) && target_p->from != source_p->from)
541     {
542     sendto_realops_flags(UMODE_DEBUG, L_ALL,
543     "Bad User [%s] :%s USER %s@%s %s, != %s[%s]",
544     client_p->name, source_p->name, source_p->username,
545     source_p->host, source_p->servptr->name,
546     target_p->name, target_p->from->name);
547     kill_client(client_p, source_p,
548     "%s (NICK from wrong direction (%s != %s))",
549     me.name, source_p->servptr->name, target_p->from->name);
550     SetKilled(source_p);
551     exit_client(source_p, &me, "USER server wrong direction");
552     return;
553     }
554    
555 michael 510 /* Increment our total user count here */
556     if (++Count.total > Count.max_tot)
557     Count.max_tot = Count.total;
558    
559     ++source_p->from->serv->dep_users;
560    
561 adx 30 SetClient(source_p);
562     dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
563     add_user_host(source_p->username, source_p->host, 1);
564     SetUserHost(source_p);
565    
566     introduce_client(client_p, source_p);
567     }
568    
569     /* introduce_client()
570     *
571     * inputs - client_p
572     * - source_p
573     * output - NONE
574     * side effects - This common function introduces a client to the rest
575     * of the net, either from a local client connect or
576     * from a remote connect.
577     */
578     static void
579     introduce_client(struct Client *client_p, struct Client *source_p)
580     {
581 michael 56 dlink_node *server_node = NULL;
582 adx 30 static char ubuf[12];
583    
584     if (MyClient(source_p))
585     send_umode(source_p, source_p, 0, SEND_UMODES, ubuf);
586     else
587     send_umode(NULL, source_p, 0, SEND_UMODES, ubuf);
588    
589     if (*ubuf == '\0')
590     {
591     ubuf[0] = '+';
592     ubuf[1] = '\0';
593     }
594    
595     /* arghhh one could try not introducing new nicks to ll leafs
596     * but then you have to introduce them "on the fly" in SJOIN
597     * not fun.
598     * Its not going to cost much more bandwidth to simply let new
599     * nicks just ride on through.
600     */
601    
602     /* We now introduce nicks "on the fly" in SJOIN anyway --
603     * you _need_ to if you aren't going to burst everyone initially.
604     *
605     * Only send to non CAP_LL servers, unless we're a lazylink leaf,
606     * in that case just send it to the uplink.
607     * -davidt
608     * rewritten to cope with SIDs .. eww eww eww --is
609     */
610     if (!ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL) &&
611     client_p != uplink)
612     {
613     if (IsCapable(uplink, CAP_TS6) && HasID(source_p))
614     {
615     sendto_one(uplink, ":%s UID %s %d %lu %s %s %s %s %s :%s",
616     source_p->servptr->id,
617     source_p->name, source_p->hopcount+1,
618 adx 386 (unsigned long)source_p->tsinfo,
619 adx 30 ubuf, source_p->username, source_p->host,
620 adx 386 (MyClient(source_p) && IsIPSpoof(source_p)) ?
621     "0" : source_p->sockhost, source_p->id, source_p->info);
622 adx 30 }
623     else
624     {
625     sendto_one(uplink, "NICK %s %d %lu %s %s %s %s :%s",
626     source_p->name, source_p->hopcount+1,
627 adx 386 (unsigned long)source_p->tsinfo,
628 adx 30 ubuf, source_p->username, source_p->host,
629 adx 386 source_p->servptr->name, source_p->info);
630 adx 30 }
631     }
632     else
633     {
634     DLINK_FOREACH(server_node, serv_list.head)
635     {
636     struct Client *server = server_node->data;
637    
638     if (IsCapable(server, CAP_LL) || server == client_p)
639     continue;
640    
641     if (IsCapable(server, CAP_TS6) && HasID(source_p))
642     sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
643     source_p->servptr->id,
644     source_p->name, source_p->hopcount+1,
645 adx 386 (unsigned long)source_p->tsinfo,
646 adx 30 ubuf, source_p->username, source_p->host,
647 adx 386 (MyClient(source_p) && IsIPSpoof(source_p)) ?
648     "0" : source_p->sockhost, source_p->id, source_p->info);
649 adx 30 else
650     sendto_one(server, "NICK %s %d %lu %s %s %s %s :%s",
651     source_p->name, source_p->hopcount+1,
652 adx 386 (unsigned long)source_p->tsinfo,
653 adx 30 ubuf, source_p->username, source_p->host,
654 adx 386 source_p->servptr->name, source_p->info);
655 adx 30 }
656     }
657     }
658    
659     /* valid_hostname()
660     *
661     * Inputs - pointer to hostname
662     * Output - 1 if valid, 0 if not
663     * Side effects - check hostname for validity
664     *
665     * NOTE: this doesn't allow a hostname to begin with a dot and
666     * will not allow more dots than chars.
667     */
668     int
669     valid_hostname(const char *hostname)
670     {
671     const char *p = hostname;
672    
673     assert(p != NULL);
674    
675 michael 56 if ('.' == *p || ':' == *p)
676     return 0;
677 adx 30
678     while (*p)
679     {
680     if (!IsHostChar(*p))
681 michael 56 return 0;
682 adx 30 p++;
683     }
684    
685 michael 56 return 1;
686 adx 30 }
687    
688     /* valid_username()
689     *
690     * Inputs - pointer to user
691     * Output - 1 if valid, 0 if not
692     * Side effects - check username for validity
693     *
694     * Absolutely always reject any '*' '!' '?' '@' in an user name
695     * reject any odd control characters names.
696     * Allow '.' in username to allow for "first.last"
697     * style of username
698     */
699     int
700     valid_username(const char *username)
701     {
702     int dots = 0;
703     const char *p = username;
704    
705     assert(p != NULL);
706    
707     if ('~' == *p)
708     ++p;
709    
710     /* reject usernames that don't start with an alphanum
711     * i.e. reject jokers who have '-@somehost' or '.@somehost'
712     * or "-hi-@somehost", "h-----@somehost" would still be accepted.
713     */
714     if (!IsAlNum(*p))
715 michael 56 return 0;
716 adx 30
717     while (*++p)
718     {
719     if ((*p == '.') && ConfigFileEntry.dots_in_ident)
720     {
721     dots++;
722    
723     if (dots > ConfigFileEntry.dots_in_ident)
724 michael 56 return 0;
725 adx 30 if (!IsUserChar(p[1]))
726 michael 56 return 0;
727 adx 30 }
728     else if (!IsUserChar(*p))
729 michael 56 return 0;
730 adx 30 }
731    
732 michael 56 return 1;
733 adx 30 }
734    
735     /* report_and_set_user_flags()
736     *
737     * inputs - pointer to source_p
738     * - pointer to aconf for this user
739     * output - NONE
740     * side effects - Report to user any special flags
741     * they are getting, and set them.
742     */
743     static void
744     report_and_set_user_flags(struct Client *source_p, const struct AccessItem *aconf)
745     {
746     /* If this user is being spoofed, tell them so */
747     if (IsConfDoSpoofIp(aconf))
748     {
749     sendto_one(source_p,
750     ":%s NOTICE %s :*** Spoofing your IP. congrats.",
751     me.name, source_p->name);
752     }
753    
754     /* If this user is in the exception class, Set it "E lined" */
755     if (IsConfExemptKline(aconf))
756     {
757     SetExemptKline(source_p);
758     sendto_one(source_p,
759     ":%s NOTICE %s :*** You are exempt from K/D/G lines. congrats.",
760     me.name, source_p->name);
761     }
762    
763     /* The else here is to make sure that G line exempt users
764     * do not get noticed twice.
765     */
766     else if (IsConfExemptGline(aconf))
767     {
768     SetExemptGline(source_p);
769     sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from G lines.",
770     me.name, source_p->name);
771     }
772    
773     if (IsConfExemptResv(aconf))
774     {
775     SetExemptResv(source_p);
776     sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from resvs.",
777     me.name, source_p->name);
778     }
779    
780     /* If this user is exempt from user limits set it "F lined" */
781     if (IsConfExemptLimits(aconf))
782     {
783     SetExemptLimits(source_p);
784     sendto_one(source_p,
785     ":%s NOTICE %s :*** You are exempt from user limits. congrats.",
786     me.name,source_p->name);
787     }
788    
789     /* If this user is exempt from idle time outs */
790     if (IsConfIdlelined(aconf))
791     {
792     SetIdlelined(source_p);
793     sendto_one(source_p,
794     ":%s NOTICE %s :*** You are exempt from idle limits. congrats.",
795     me.name, source_p->name);
796     }
797    
798     if (IsConfCanFlood(aconf))
799     {
800     SetCanFlood(source_p);
801     sendto_one(source_p, ":%s NOTICE %s :*** You are exempt from flood "
802     "protection, aren't you fearsome.",
803     me.name, source_p->name);
804     }
805     }
806    
807     /* do_local_user()
808     *
809     * inputs -
810     * output - NONE
811     * side effects -
812     */
813     void
814     do_local_user(const char *nick, struct Client *client_p, struct Client *source_p,
815     const char *username, const char *host, const char *server,
816     const char *realname)
817     {
818     assert(source_p != NULL);
819     assert(source_p->username != username);
820    
821     if (source_p == NULL)
822     return;
823    
824     if (!IsUnknown(source_p))
825     {
826     sendto_one(source_p, form_str(ERR_ALREADYREGISTRED),
827     me.name, nick);
828     return;
829     }
830    
831 michael 503 source_p->localClient->registration &= ~REG_NEED_USER;
832 adx 30
833     /*
834     * don't take the clients word for it, ever
835     */
836     source_p->servptr = &me;
837    
838     strlcpy(source_p->info, realname, sizeof(source_p->info));
839    
840     if (!IsGotId(source_p))
841     {
842     /* save the username in the client
843     * If you move this you'll break ping cookies..you've been warned
844     */
845     strlcpy(source_p->username, username, sizeof(source_p->username));
846     }
847    
848 michael 503 if (!source_p->localClient->registration)
849 adx 30 /* NICK already received, now I have USER... */
850     register_local_user(client_p, source_p, source_p->name, username);
851     }
852    
853     /* change_simple_umode()
854     *
855     * this callback can be hooked to allow special handling of
856     * certain usermodes
857     */
858     static void *
859     change_simple_umode(va_list args)
860     {
861     struct Client *source_p;
862     int what;
863     unsigned int flag;
864    
865     va_arg(args, struct Client *);
866     source_p = va_arg(args, struct Client *);
867     what = va_arg(args, int);
868     flag = va_arg(args, unsigned int);
869    
870     if (what == MODE_ADD)
871     source_p->umodes |= flag;
872     else
873     source_p->umodes &= ~flag;
874    
875     return NULL;
876     }
877    
878     /* set_user_mode()
879     *
880     * added 15/10/91 By Darren Reed.
881     * parv[0] - sender
882     * parv[1] - username to change mode for
883     * parv[2] - modes to change
884     */
885     void
886     set_user_mode(struct Client *client_p, struct Client *source_p,
887     int parc, char *parv[])
888     {
889     unsigned int flag, setflags;
890     char **p, *m, buf[IRCD_BUFSIZE];
891     struct Client *target_p;
892     int what = MODE_ADD, badflag = 0, i;
893 michael 56
894     assert(!(parc < 2));
895    
896 adx 30 if ((target_p = find_person(client_p, parv[1])) == NULL)
897     {
898     if (MyConnect(source_p))
899     sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
900     me.name, source_p->name, parv[1]);
901     return;
902     }
903    
904     if (IsServer(source_p))
905     {
906     sendto_realops_flags(UMODE_ALL, L_ADMIN, "*** Mode for User %s from %s",
907     parv[1], source_p->name);
908     return;
909     }
910    
911     if (source_p != target_p || target_p->from != source_p->from)
912     {
913     sendto_one(source_p, form_str(ERR_USERSDONTMATCH),
914     me.name, source_p->name);
915     return;
916     }
917    
918     if (parc < 3)
919     {
920     m = buf;
921     *m++ = '+';
922    
923     for (i = 0; i < 128; i++)
924     if (source_p->umodes & user_modes[i])
925     *m++ = (char)i;
926     *m = '\0';
927    
928     sendto_one(source_p, form_str(RPL_UMODEIS),
929     me.name, source_p->name, buf);
930     return;
931     }
932    
933     execute_callback(entering_umode_cb, client_p, source_p);
934    
935     /* find flags already set for user */
936     setflags = source_p->umodes;
937    
938     /* parse mode change string(s) */
939     for (p = &parv[2]; p && *p; p++)
940     {
941     for (m = *p; *m; m++)
942     {
943     switch (*m)
944     {
945     case '+':
946     what = MODE_ADD;
947     break;
948     case '-':
949     what = MODE_DEL;
950     break;
951     case 'o':
952     if (what == MODE_ADD)
953     {
954     if (IsServer(client_p) && !IsOper(source_p))
955     {
956     ++Count.oper;
957     SetOper(source_p);
958     }
959     }
960     else
961     {
962     /* Only decrement the oper counts if an oper to begin with
963     * found by Pat Szuta, Perly , perly@xnet.com
964     */
965     if (!IsOper(source_p))
966     break;
967    
968     ClearOper(source_p);
969     source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
970     Count.oper--;
971    
972     if (MyConnect(source_p))
973     {
974     dlink_node *dm;
975    
976     detach_conf(source_p, OPER_TYPE);
977     ClearOperFlags(source_p);
978    
979     if ((dm = dlinkFindDelete(&oper_list, source_p)) != NULL)
980     free_dlink_node(dm);
981     }
982     }
983    
984     break;
985    
986     /* we may not get these,
987     * but they shouldnt be in default
988     */
989     case ' ' :
990     case '\n':
991     case '\r':
992     case '\t':
993     break;
994    
995     default:
996     if ((flag = user_modes[(unsigned char)*m]))
997     {
998     if (MyConnect(source_p) && !IsOper(source_p) &&
999     (ConfigFileEntry.oper_only_umodes & flag))
1000     {
1001     badflag = 1;
1002     }
1003     else
1004 michael 56 execute_callback(umode_cb, client_p, source_p, what, flag);
1005 adx 30 }
1006     else
1007     {
1008     if (MyConnect(source_p))
1009     badflag = 1;
1010     }
1011    
1012     break;
1013     }
1014     }
1015     }
1016    
1017     if (badflag)
1018     sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG),
1019     me.name, source_p->name);
1020    
1021     if ((source_p->umodes & UMODE_NCHANGE) && !IsOperN(source_p))
1022     {
1023     sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
1024     me.name, source_p->name);
1025     source_p->umodes &= ~UMODE_NCHANGE; /* only tcm's really need this */
1026     }
1027    
1028     if (MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1029     !IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1030     {
1031     sendto_one(source_p, ":%s NOTICE %s :*** You have no admin flag;",
1032     me.name, source_p->name);
1033     source_p->umodes &= ~UMODE_ADMIN;
1034     }
1035    
1036     if (!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1037     ++Count.invisi;
1038     if ((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1039     --Count.invisi;
1040    
1041 michael 56 /*
1042     * compare new flags with old flags and send string which
1043 adx 30 * will cause servers to update correctly.
1044     */
1045     send_umode_out(client_p, source_p, setflags);
1046     }
1047    
1048     /* send_umode()
1049     * send the MODE string for user (user) to connection client_p
1050     * -avalon
1051     */
1052     void
1053     send_umode(struct Client *client_p, struct Client *source_p,
1054     unsigned int old, unsigned int sendmask, char *umode_buf)
1055     {
1056     int what = 0;
1057     unsigned int i;
1058     unsigned int flag;
1059     char *m = umode_buf;
1060    
1061 michael 56 /*
1062     * build a string in umode_buf to represent the change in the user's
1063 adx 30 * mode between the new (source_p->umodes) and 'old'.
1064     */
1065     for (i = 0; i < 128; i++)
1066     {
1067     flag = user_modes[i];
1068     if (!flag)
1069     continue;
1070    
1071     if (MyClient(source_p) && !(flag & sendmask))
1072     continue;
1073    
1074     if ((flag & old) && !(source_p->umodes & flag))
1075     {
1076     if (what == MODE_DEL)
1077     *m++ = (char)i;
1078     else
1079     {
1080     what = MODE_DEL;
1081     *m++ = '-';
1082     *m++ = (char)i;
1083     }
1084     }
1085     else if (!(flag & old) && (source_p->umodes & flag))
1086     {
1087     if (what == MODE_ADD)
1088     *m++ = (char)i;
1089     else
1090     {
1091     what = MODE_ADD;
1092     *m++ = '+';
1093     *m++ = (char)i;
1094     }
1095     }
1096     }
1097    
1098     *m = '\0';
1099    
1100     if (*umode_buf && client_p)
1101 michael 528 sendto_one(client_p, ":%s!%s@%s MODE %s :%s",
1102     source_p->name, source_p->username,
1103     source_p->host, source_p->name, umode_buf);
1104 adx 30 }
1105    
1106     /* send_umode_out()
1107     *
1108     * inputs -
1109     * output - NONE
1110     * side effects - Only send ubuf out to servers that know about this client
1111     */
1112     void
1113     send_umode_out(struct Client *client_p, struct Client *source_p,
1114     unsigned int old)
1115     {
1116     char buf[IRCD_BUFSIZE];
1117     dlink_node *ptr = NULL;
1118    
1119     send_umode(NULL, source_p, old, IsOperHiddenAdmin(source_p) ?
1120     SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, buf);
1121    
1122     if (*buf)
1123     {
1124     DLINK_FOREACH(ptr, serv_list.head)
1125     {
1126     struct Client *target_p = ptr->data;
1127    
1128     if ((target_p != client_p) && (target_p != source_p))
1129     {
1130     if ((!(ServerInfo.hub && IsCapable(target_p, CAP_LL))) ||
1131     (target_p->localClient->serverMask &
1132     source_p->lazyLinkClientExists))
1133     sendto_one(target_p, ":%s MODE %s :%s",
1134     ID_or_name(source_p, target_p),
1135     ID_or_name(source_p, target_p), buf);
1136     }
1137     }
1138     }
1139    
1140     if (client_p && MyClient(client_p))
1141     send_umode(client_p, source_p, old, 0xffffffff, buf);
1142     }
1143    
1144     /* user_welcome()
1145     *
1146     * inputs - client pointer to client to welcome
1147     * output - NONE
1148     * side effects -
1149     */
1150     static void
1151     user_welcome(struct Client *source_p)
1152     {
1153     #if defined(__TIME__) && defined(__DATE__)
1154     static const char built_date[] = __DATE__ " at " __TIME__;
1155     #else
1156     static const char built_date[] = "unknown";
1157     #endif
1158    
1159     #ifdef HAVE_LIBCRYPTO
1160     if (source_p->localClient->fd.ssl != NULL)
1161     sendto_one(source_p, ":%s NOTICE %s :*** Connected securely via %s",
1162     me.name, source_p->name,
1163     ssl_get_cipher(source_p->localClient->fd.ssl));
1164     #endif
1165    
1166     sendto_one(source_p, form_str(RPL_WELCOME), me.name, source_p->name,
1167     ServerInfo.network_name, source_p->name);
1168     sendto_one(source_p, form_str(RPL_YOURHOST), me.name, source_p->name,
1169 michael 56 get_listener_name(source_p->localClient->listener), ircd_version);
1170 adx 30 sendto_one(source_p, form_str(RPL_CREATED),
1171 michael 56 me.name, source_p->name, built_date);
1172 adx 30 sendto_one(source_p, form_str(RPL_MYINFO),
1173     me.name, source_p->name, me.name, ircd_version, umode_buffer);
1174     show_isupport(source_p);
1175    
1176     if (source_p->id[0] != '\0')
1177     sendto_one(source_p, form_str(RPL_YOURID), me.name,
1178     source_p->name, source_p->id);
1179    
1180     show_lusers(source_p);
1181    
1182     if (ConfigFileEntry.short_motd)
1183     {
1184     sendto_one(source_p, "NOTICE %s :*** Notice -- motd was last changed at %s",
1185     source_p->name, ConfigFileEntry.motd.lastChangedDate);
1186     sendto_one(source_p,
1187     "NOTICE %s :*** Notice -- Please read the motd if you haven't "
1188     "read it", source_p->name);
1189     sendto_one(source_p, form_str(RPL_MOTDSTART),
1190     me.name, source_p->name, me.name);
1191     sendto_one(source_p, form_str(RPL_MOTD),
1192     me.name, source_p->name,
1193     "*** This is the short motd ***");
1194     sendto_one(source_p, form_str(RPL_ENDOFMOTD),
1195     me.name, source_p->name);
1196     }
1197     else
1198     send_message_file(source_p, &ConfigFileEntry.motd);
1199     }
1200    
1201     /* check_xline()
1202     *
1203     * inputs - pointer to client to test
1204     * outupt - 1 if exiting 0 if ok
1205     * side effects -
1206     */
1207     static int
1208     check_xline(struct Client *source_p)
1209     {
1210     struct ConfItem *conf;
1211     struct MatchItem *xconf;
1212     const char *reason;
1213    
1214     if ((conf = find_matching_name_conf(XLINE_TYPE, source_p->info,
1215     NULL, NULL, 0)) != NULL)
1216     {
1217     xconf = map_to_conf(conf);
1218     xconf->count++;
1219    
1220     if (xconf->reason != NULL)
1221     reason = xconf->reason;
1222     else
1223     reason = "No Reason";
1224    
1225     sendto_realops_flags(UMODE_REJ, L_ALL,
1226 michael 56 "X-line Rejecting [%s] [%s], user %s [%s]",
1227     source_p->info, reason,
1228     get_client_name(source_p, HIDE_IP),
1229     source_p->sockhost);
1230 adx 30
1231     ServerStats->is_ref++;
1232 michael 56 if (REJECT_HOLD_TIME > 0)
1233 adx 30 {
1234     sendto_one(source_p, ":%s NOTICE %s :Bad user info",
1235 michael 56 me.name, source_p->name);
1236 adx 30 source_p->localClient->reject_delay = CurrentTime + REJECT_HOLD_TIME;
1237     SetCaptured(source_p);
1238     }
1239     else
1240     exit_client(source_p, &me, "Bad user info");
1241     return 1;
1242     }
1243    
1244     return 0;
1245     }
1246    
1247     static int
1248     check_regexp_xline(struct Client *source_p)
1249     {
1250     struct ConfItem *conf = NULL;
1251     const char *reason = NULL;
1252    
1253     if ((conf = find_matching_name_conf(RXLINE_TYPE, source_p->info, NULL, NULL, 0)))
1254     {
1255     struct MatchItem *reg = map_to_conf(conf);
1256    
1257     ++reg->count;
1258    
1259     if (reg->reason != NULL)
1260     reason = reg->reason;
1261     else
1262     reason = "No Reason";
1263    
1264     sendto_realops_flags(UMODE_REJ, L_ALL,
1265     "X-line (REGEX) Rejecting [%s] [%s], user %s [%s]",
1266     source_p->info, reason,
1267     get_client_name(source_p, HIDE_IP),
1268     source_p->sockhost);
1269    
1270     ServerStats->is_ref++;
1271     exit_client(source_p, &me, "Bad user info");
1272     return 1;
1273     }
1274    
1275     return 0;
1276     }
1277    
1278     /* oper_up()
1279     *
1280     * inputs - pointer to given client to oper
1281     * output - NONE
1282     * side effects - Blindly opers up given source_p, using aconf info
1283     * all checks on passwords have already been done.
1284     * This could also be used by rsa oper routines.
1285     */
1286     void
1287     oper_up(struct Client *source_p)
1288     {
1289     unsigned int old = source_p->umodes;
1290     const char *operprivs = "";
1291 michael 56 const struct AccessItem *oconf = NULL;
1292 adx 30
1293 michael 56 assert(source_p->localClient->confs.head);
1294     oconf = map_to_conf((source_p->localClient->confs.head)->data);
1295    
1296     ++Count.oper;
1297 adx 30 SetOper(source_p);
1298    
1299 michael 56 if (oconf->modes)
1300     source_p->umodes |= oconf->modes;
1301     else if (ConfigFileEntry.oper_umodes)
1302 adx 30 source_p->umodes |= ConfigFileEntry.oper_umodes;
1303     else
1304     source_p->umodes |= (UMODE_SERVNOTICE|UMODE_OPERWALL|
1305 michael 56 UMODE_WALLOP|UMODE_LOCOPS);
1306 adx 30
1307     assert(dlinkFind(&oper_list, source_p) == NULL);
1308     dlinkAdd(source_p, make_dlink_node(), &oper_list);
1309    
1310     operprivs = oper_privs_as_string(oconf->port);
1311    
1312     SetOFlag(source_p, oconf->port);
1313    
1314     if (IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p))
1315     source_p->umodes |= UMODE_ADMIN;
1316     if (!IsOperN(source_p))
1317     source_p->umodes &= ~UMODE_NCHANGE;
1318    
1319     sendto_realops_flags(UMODE_ALL, L_ALL, "%s (%s@%s) is now an operator",
1320     source_p->name, source_p->username, source_p->host);
1321     send_umode_out(source_p, source_p, old);
1322     sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1323     sendto_one(source_p, ":%s NOTICE %s :*** Oper privs are %s",
1324     me.name, source_p->name, operprivs);
1325     send_message_file(source_p, &ConfigFileEntry.opermotd);
1326     }
1327    
1328     /*
1329     * Quick and dirty UID code for new proposed SID on EFnet
1330     *
1331     */
1332    
1333     static char new_uid[TOTALSIDUID+1]; /* allow for \0 */
1334     static void add_one_to_uid(int i);
1335    
1336     /*
1337     * init_uid()
1338     *
1339     * inputs - NONE
1340     * output - NONE
1341     * side effects - new_uid is filled in with server id portion (sid)
1342     * (first 3 bytes) or defaulted to 'A'.
1343     * Rest is filled in with 'A'
1344     */
1345     void
1346     init_uid(void)
1347     {
1348     int i;
1349    
1350     memset(new_uid, 0, sizeof(new_uid));
1351    
1352     if (ServerInfo.sid != NULL)
1353     {
1354     memcpy(new_uid, ServerInfo.sid, IRCD_MIN(strlen(ServerInfo.sid),
1355 michael 56 IRC_MAXSID));
1356 adx 30 memcpy(&me.id, ServerInfo.sid, IRCD_MIN(strlen(ServerInfo.sid),
1357 michael 56 IRC_MAXSID));
1358 adx 30 hash_add_id(&me);
1359     }
1360    
1361     for (i = 0; i < IRC_MAXSID; i++)
1362     if (new_uid[i] == '\0')
1363     new_uid[i] = 'A';
1364    
1365     /* XXX if IRC_MAXUID != 6, this will have to be rewritten */
1366     /* Yes nenolod, I have known it was off by one ever since I wrote it
1367     * But *JUST* for you, though, it really doesn't look as *pretty*
1368     * -Dianora
1369     */
1370     memcpy(new_uid+IRC_MAXSID, "AAAAA@", IRC_MAXUID);
1371    
1372     entering_umode_cb = register_callback("entering_umode", NULL);
1373     umode_cb = register_callback("changing_umode", change_simple_umode);
1374     uid_get_cb = register_callback("uid_get", uid_get);
1375     }
1376    
1377     /*
1378     * uid_get
1379     *
1380     * inputs - struct Client *
1381     * output - new UID is returned to caller
1382     * side effects - new_uid is incremented by one.
1383     */
1384     static void *
1385     uid_get(va_list args)
1386     {
1387 michael 56 add_one_to_uid(TOTALSIDUID-1); /* index from 0 */
1388 adx 30 return ((void *) new_uid);
1389     }
1390    
1391     /*
1392     * add_one_to_uid
1393     *
1394     * inputs - index number into new_uid
1395     * output - NONE
1396     * side effects - new_uid is incremented by one
1397     * note this is a recursive function
1398     */
1399     static void
1400     add_one_to_uid(int i)
1401     {
1402 michael 56 if (i != IRC_MAXSID) /* Not reached server SID portion yet? */
1403 adx 30 {
1404     if (new_uid[i] == 'Z')
1405     new_uid[i] = '0';
1406     else if (new_uid[i] == '9')
1407     {
1408     new_uid[i] = 'A';
1409     add_one_to_uid(i-1);
1410     }
1411     else new_uid[i] = new_uid[i] + 1;
1412     }
1413     else
1414     {
1415     /* XXX if IRC_MAXUID != 6, this will have to be rewritten */
1416     if (new_uid[i] == 'Z')
1417     memcpy(new_uid+IRC_MAXSID, "AAAAAA", IRC_MAXUID);
1418     else
1419     new_uid[i] = new_uid[i] + 1;
1420     }
1421     }
1422    
1423     /*
1424     * init_isupport()
1425     *
1426     * input - NONE
1427     * output - NONE
1428     * side effects - Must be called before isupport is enabled
1429     */
1430     void
1431     init_isupport(void)
1432     {
1433     isupportFile = init_MessageLine();
1434    
1435     add_isupport("CALLERID", NULL, -1);
1436     add_isupport("CASEMAPPING", CASEMAP, -1);
1437     add_isupport("KICKLEN", NULL, KICKLEN);
1438     add_isupport("MODES", NULL, MAXMODEPARAMS);
1439     add_isupport("NICKLEN", NULL, NICKLEN-1);
1440     #ifdef HALFOPS
1441     add_isupport("PREFIX", "(ohv)@%+", -1);
1442     add_isupport("STATUSMSG", "@%+", -1);
1443     #else
1444     add_isupport("PREFIX", "(ov)@+", -1);
1445     add_isupport("STATUSMSG", "@+", -1);
1446     #endif
1447     add_isupport("TOPICLEN", NULL, TOPICLEN);
1448     }
1449    
1450     /*
1451     * add_isupport()
1452     *
1453     * input - name of supported function
1454     * - options if any
1455     * - number if any
1456     * output - NONE
1457     * side effects - Each supported item must call this when activated
1458     */
1459     void
1460     add_isupport(const char *name, const char *options, int n)
1461     {
1462     dlink_node *ptr;
1463     struct Isupport *support;
1464    
1465     DLINK_FOREACH(ptr, support_list.head)
1466     {
1467     support = ptr->data;
1468     if (irccmp(support->name, name) == 0)
1469     {
1470     MyFree(support->name);
1471     MyFree(support->options);
1472     break;
1473     }
1474     }
1475    
1476     if (ptr == NULL)
1477     {
1478     support = MyMalloc(sizeof(*support));
1479     dlinkAddTail(support, &support->node, &support_list);
1480     }
1481    
1482     DupString(support->name, name);
1483     if (options != NULL)
1484     DupString(support->options, options);
1485     support->number = n;
1486    
1487     rebuild_isupport_message_line();
1488     }
1489    
1490     /*
1491     * delete_isupport()
1492     *
1493     * input - name of supported function
1494     * output - NONE
1495     * side effects - Each supported item must call this when deactivated
1496     */
1497     void
1498     delete_isupport(const char *name)
1499     {
1500     dlink_node *ptr;
1501     struct Isupport *support;
1502    
1503     DLINK_FOREACH(ptr, support_list.head)
1504     {
1505     support = ptr->data;
1506     if (irccmp(support->name, name) == 0)
1507     {
1508     dlinkDelete(ptr, &support_list);
1509     MyFree(support->name);
1510     MyFree(support->options);
1511     MyFree(support);
1512     break;
1513     }
1514     }
1515    
1516     rebuild_isupport_message_line();
1517     }
1518    
1519     /*
1520     * rebuild_isupport_message_line
1521     *
1522     * input - NONE
1523     * output - NONE
1524     * side effects - Destroy the isupport MessageFile lines, and rebuild.
1525     */
1526     void
1527     rebuild_isupport_message_line(void)
1528     {
1529     char isupportbuffer[IRCD_BUFSIZE];
1530     char *p = isupportbuffer;
1531     dlink_node *ptr = NULL;
1532     int n = 0;
1533     int tokens = 0;
1534     size_t len = 0;
1535     size_t reserve = strlen(me.name) + HOSTLEN + strlen(form_str(RPL_ISUPPORT));
1536    
1537     destroy_MessageLine(isupportFile);
1538    
1539     DLINK_FOREACH(ptr, support_list.head)
1540     {
1541     struct Isupport *support = ptr->data;
1542    
1543     p += (n = ircsprintf(p, "%s", support->name));
1544     len += n;
1545    
1546     if (support->options != NULL)
1547     {
1548     p += (n = ircsprintf(p, "=%s", support->options));
1549     len += n;
1550     }
1551    
1552     if (support->number > 0)
1553     {
1554     p += (n = ircsprintf(p, "=%d", support->number));
1555     len += n;
1556     }
1557    
1558     *p++ = ' ';
1559     len++;
1560     *p = '\0';
1561    
1562     if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1563     { /* arbritrary for now */
1564     if (*--p == ' ')
1565 michael 56 *p = '\0';
1566 adx 30
1567     addto_MessageLine(isupportFile, isupportbuffer);
1568     p = isupportbuffer;
1569     len = 0;
1570     n = tokens = 0;
1571     }
1572     }
1573    
1574     if (len != 0)
1575     {
1576     if (*--p == ' ')
1577     *p = '\0';
1578     addto_MessageLine(isupportFile, isupportbuffer);
1579     }
1580     }

Properties

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svn:eol-style native
svn:keywords Id Revision