/[svn]/ircd-hybrid/src/channel.c
ViewVC logotype

Annotation of /ircd-hybrid/src/channel.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 502 - (hide annotations)
Fri Mar 3 19:49:25 2006 UTC (15 years, 3 months ago) by michael
File MIME type: text/x-chdr
File size: 24158 byte(s)
- Implemented CAP command handler based uppon ircu's m_cap()
- Added somewhat outdated draft-mitchell-irc-capabilities-01.txt until
  I get the latest version from kev.
- Added "multi-prefix" cap so clients supporting "multi-prefix"
  may recieve multi prefixed NAMES replies, e.g. @%+nick1 @+nick2 ..
- Fixed "make clean" for src/conf/

1 adx 30 /*
2     * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3     *
4     * Copyright (C) 2002 by the past and present ircd coders, and others.
5     *
6     * This program is free software; you can redistribute it and/or modify
7     * it under the terms of the GNU General Public License as published by
8     * the Free Software Foundation; either version 2 of the License, or
9     * (at your option) any later version.
10     *
11     * This program is distributed in the hope that it will be useful,
12     * but WITHOUT ANY WARRANTY; without even the implied warranty of
13     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     * GNU General Public License for more details.
15     *
16     * You should have received a copy of the GNU General Public License
17     * along with this program; if not, write to the Free Software
18     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19     * USA
20     */
21    
22     /*! \file channel.c
23     * \brief Responsible for managing channels, members, bans and topics
24 knight 31 * \version $Id$
25 adx 30 */
26    
27     #include "stdinc.h"
28     #include "channel.h"
29     #include "channel_mode.h"
30     #include "client.h"
31     #include "common.h"
32     #include "hash.h"
33 michael 364 #include "hostmask.h"
34 adx 30 #include "ircd.h"
35     #include "numeric.h"
36     #include "s_serv.h" /* captab */
37     #include "s_user.h"
38     #include "send.h"
39     #include "s_conf.h" /* ConfigFileEntry, ConfigChannel */
40    
41     struct config_channel_entry ConfigChannel;
42     dlink_list global_channel_list = { NULL, NULL, 0 };
43     BlockHeap *ban_heap; /*! \todo ban_heap shouldn't be a global var */
44    
45     static BlockHeap *topic_heap = NULL;
46     static BlockHeap *member_heap = NULL;
47     static BlockHeap *channel_heap = NULL;
48    
49     static char buf[IRCD_BUFSIZE];
50     static char modebuf[MODEBUFLEN];
51     static char parabuf[MODEBUFLEN];
52    
53    
54     /*! \brief Initializes the channel blockheap, adds known channel CAPAB
55     */
56     void
57     init_channels(void)
58     {
59     /*
60     * XXX - These should get moved to somwhere else once we have
61     * a modular channelmode system
62     */
63     add_capability("EX", CAP_EX, 1);
64     add_capability("IE", CAP_IE, 1);
65     add_capability("CHW", CAP_CHW, 1);
66    
67     channel_heap = BlockHeapCreate("channel", sizeof(struct Channel), CHANNEL_HEAP_SIZE);
68     ban_heap = BlockHeapCreate("ban", sizeof(struct Ban), BAN_HEAP_SIZE);
69     topic_heap = BlockHeapCreate("topic", TOPICLEN+1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE);
70     member_heap = BlockHeapCreate("member", sizeof(struct Membership), CHANNEL_HEAP_SIZE*2);
71     }
72    
73     /*! \brief adds a user to a channel by adding another link to the
74     * channels member chain.
75     * \param chptr pointer to channel to add client to
76     * \param who pointer to client (who) to add
77     * \param flags flags for chanops etc
78     * \param flood_ctrl whether to count this join in flood calculations
79     */
80     void
81     add_user_to_channel(struct Channel *chptr, struct Client *who,
82     unsigned int flags, int flood_ctrl)
83     {
84     struct Membership *ms = NULL;
85    
86     if (GlobalSetOptions.joinfloodtime > 0)
87     {
88     if (flood_ctrl)
89     chptr->number_joined++;
90    
91     chptr->number_joined -= (CurrentTime - chptr->last_join_time) *
92     (((float)GlobalSetOptions.joinfloodcount) /
93     (float)GlobalSetOptions.joinfloodtime);
94    
95     if (chptr->number_joined <= 0)
96     {
97     chptr->number_joined = 0;
98     ClearJoinFloodNoticed(chptr);
99     }
100     else if (chptr->number_joined >= GlobalSetOptions.joinfloodcount)
101     {
102     chptr->number_joined = GlobalSetOptions.joinfloodcount;
103    
104     if (!IsSetJoinFloodNoticed(chptr))
105     {
106     SetJoinFloodNoticed(chptr);
107     sendto_realops_flags(UMODE_BOTS, L_ALL,
108     "Possible Join Flooder %s on %s target: %s",
109     get_client_name(who, HIDE_IP),
110     who->servptr->name, chptr->chname);
111     }
112     }
113    
114     chptr->last_join_time = CurrentTime;
115     }
116    
117     ms = BlockHeapAlloc(member_heap);
118     ms->client_p = who;
119     ms->chptr = chptr;
120     ms->flags = flags;
121    
122     dlinkAdd(ms, &ms->channode, &chptr->members);
123     dlinkAdd(ms, &ms->usernode, &who->channel);
124     }
125    
126     /*! \brief deletes an user from a channel by removing a link in the
127     * channels member chain.
128     * \param member pointer to Membership struct
129     */
130     void
131     remove_user_from_channel(struct Membership *member)
132     {
133     struct Client *client_p = member->client_p;
134     struct Channel *chptr = member->chptr;
135    
136     dlinkDelete(&member->channode, &chptr->members);
137     dlinkDelete(&member->usernode, &client_p->channel);
138    
139     BlockHeapFree(member_heap, member);
140    
141 michael 198 if (chptr->members.head == NULL)
142 adx 30 {
143 michael 198 assert(dlink_list_length(&chptr->members) == 0);
144 adx 30 destroy_channel(chptr);
145     }
146     }
147    
148     /* send_members()
149     *
150     * inputs -
151     * output - NONE
152     * side effects -
153     */
154     static void
155     send_members(struct Client *client_p, struct Channel *chptr,
156     char *lmodebuf, char *lparabuf)
157     {
158     struct Membership *ms;
159     dlink_node *ptr;
160     int tlen; /* length of text to append */
161     char *t, *start; /* temp char pointer */
162    
163     start = t = buf + ircsprintf(buf, ":%s SJOIN %lu %s %s %s:",
164     ID_or_name(&me, client_p),
165     (unsigned long)chptr->channelts,
166     chptr->chname, lmodebuf, lparabuf);
167    
168     DLINK_FOREACH(ptr, chptr->members.head)
169     {
170     ms = ptr->data;
171    
172     tlen = strlen(IsCapable(client_p, CAP_TS6) ?
173     ID(ms->client_p) : ms->client_p->name) + 1; /* nick + space */
174    
175     if (ms->flags & CHFL_CHANOP)
176     tlen++;
177     #ifdef HALFOPS
178 adx 355 else if (ms->flags & CHFL_HALFOP)
179 adx 30 tlen++;
180     #endif
181     if (ms->flags & CHFL_VOICE)
182     tlen++;
183    
184     /* space will be converted into CR, but we also need space for LF..
185     * That's why we use '- 1' here
186     * -adx */
187     if (t + tlen - buf > sizeof(buf) - 1)
188     {
189     *(t - 1) = '\0'; /* kill the space and terminate the string */
190     sendto_one(client_p, "%s", buf);
191     t = start;
192     }
193    
194 adx 355 if ((ms->flags & (CHFL_CHANOP | CHFL_HALFOP)))
195     *t++ = (!(ms->flags & CHFL_CHANOP) && IsCapable(client_p, CAP_HOPS)) ?
196     '%' : '@';
197     if ((ms->flags & CHFL_VOICE))
198     *t++ = '+';
199 adx 30
200     if (IsCapable(client_p, CAP_TS6))
201     strcpy(t, ID(ms->client_p));
202     else
203     strcpy(t, ms->client_p->name);
204     t += strlen(t);
205     *t++ = ' ';
206     }
207    
208     /* should always be non-NULL unless we have a kind of persistent channels */
209     if (chptr->members.head != NULL)
210     t--; /* take the space out */
211     *t = '\0';
212     sendto_one(client_p, "%s", buf);
213     }
214    
215     /*! \brief sends +b/+e/+I
216     * \param client_p client pointer to server
217     * \param chptr pointer to channel
218     * \param top pointer to top of mode link list to send
219     * \param flag char flag flagging type of mode. Currently this can be 'b', e' or 'I'
220     */
221     static void
222     send_mode_list(struct Client *client_p, struct Channel *chptr,
223     dlink_list *top, char flag)
224     {
225     int ts5 = !IsCapable(client_p, CAP_TS6);
226     dlink_node *lp;
227     struct Ban *banptr;
228     char pbuf[IRCD_BUFSIZE];
229     int tlen, mlen, cur_len, count = 0;
230     char *mp = NULL, *pp = pbuf;
231    
232     if (top == NULL || top->length == 0)
233     return;
234    
235     if (ts5)
236     mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chptr->chname);
237     else
238     mlen = ircsprintf(buf, ":%s BMASK %lu %s %c :", me.id,
239     (unsigned long)chptr->channelts, chptr->chname, flag);
240    
241     /* MODE needs additional one byte for space between buf and pbuf */
242     cur_len = mlen + ts5;
243     mp = buf + mlen;
244    
245     DLINK_FOREACH(lp, top->head)
246     {
247     banptr = lp->data;
248    
249     /* must add another b/e/I letter if we use MODE */
250     tlen = banptr->len + 3 + ts5;
251    
252     /*
253     * send buffer and start over if we cannot fit another ban,
254     * or if the target is non-ts6 and we have too many modes in
255     * in this line.
256     */
257     if (cur_len + (tlen - 1) > IRCD_BUFSIZE - 2 ||
258     (!IsCapable(client_p, CAP_TS6) &&
259     (count >= MAXMODEPARAMS || pp - pbuf >= MODEBUFLEN)))
260     {
261     *(pp - 1) = '\0'; /* get rid of trailing space on buffer */
262     sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
263    
264     cur_len = mlen + ts5;
265     mp = buf + mlen;
266     pp = pbuf;
267     count = 0;
268     }
269    
270     count++;
271     if (ts5)
272     {
273     *mp++ = flag;
274     *mp = '\0';
275     }
276    
277     pp += ircsprintf(pp, "%s!%s@%s ", banptr->name, banptr->username,
278     banptr->host);
279     cur_len += tlen;
280     }
281    
282     *(pp - 1) = '\0'; /* get rid of trailing space on buffer */
283     sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
284     }
285    
286     /*! \brief send "client_p" a full list of the modes for channel chptr
287     * \param client_p pointer to client client_p
288     * \param chptr pointer to channel pointer
289     */
290     void
291     send_channel_modes(struct Client *client_p, struct Channel *chptr)
292     {
293     if (chptr->chname[0] != '#')
294     return;
295    
296     *modebuf = *parabuf = '\0';
297     channel_modes(chptr, client_p, modebuf, parabuf);
298     send_members(client_p, chptr, modebuf, parabuf);
299    
300     send_mode_list(client_p, chptr, &chptr->banlist, 'b');
301    
302     if (IsCapable(client_p, CAP_EX))
303     send_mode_list(client_p, chptr, &chptr->exceptlist, 'e');
304     if (IsCapable(client_p, CAP_IE))
305     send_mode_list(client_p, chptr, &chptr->invexlist, 'I');
306     }
307    
308     /*! \brief check channel name for invalid characters
309     * \param name pointer to channel name string
310 michael 491 * \param local indicates whether it's a local or remote creation
311     * \return 0 if invalid, 1 otherwise
312 adx 30 */
313     int
314 michael 491 check_channel_name(const char *name, int local)
315 adx 30 {
316 michael 495 const char *p = name;
317 michael 491 int max_length = local ? LOCAL_CHANNELLEN : CHANNELLEN;
318 adx 30 assert(name != NULL);
319    
320 michael 491 if (!IsChanPrefix(*p))
321     return 0;
322    
323 michael 492 while (*++p)
324 adx 30 if (!IsChanChar(*p))
325     return 0;
326    
327 michael 491 return p - name <= max_length;
328 adx 30 }
329    
330     void
331     remove_ban(struct Ban *bptr, dlink_list *list)
332     {
333     dlinkDelete(&bptr->node, list);
334    
335     MyFree(bptr->name);
336     MyFree(bptr->username);
337     MyFree(bptr->host);
338     MyFree(bptr->who);
339    
340     BlockHeapFree(ban_heap, bptr);
341     }
342    
343     /* free_channel_list()
344     *
345     * inputs - pointer to dlink_list
346     * output - NONE
347     * side effects -
348     */
349     void
350     free_channel_list(dlink_list *list)
351     {
352     dlink_node *ptr = NULL, *next_ptr = NULL;
353    
354     DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
355     remove_ban(ptr->data, list);
356    
357     assert(list->tail == NULL && list->head == NULL);
358     }
359    
360     /*! \brief Get Channel block for chname (and allocate a new channel
361     * block, if it didn't exist before)
362 michael 491 * \param chname channel name
363     * \return channel block
364 adx 30 */
365     struct Channel *
366 michael 491 make_channel(const char *chname)
367 adx 30 {
368     struct Channel *chptr = NULL;
369    
370 michael 491 assert(!EmptyString(chname));
371 adx 30
372 michael 491 chptr = BlockHeapAlloc(channel_heap);
373 adx 30
374     /* doesn't hurt to set it here */
375 michael 491 chptr->channelts = CurrentTime;
376     chptr->last_join_time = CurrentTime;
377 adx 30
378     strlcpy(chptr->chname, chname, sizeof(chptr->chname));
379     dlinkAdd(chptr, &chptr->node, &global_channel_list);
380    
381     hash_add_channel(chptr);
382    
383     return chptr;
384     }
385    
386     /*! \brief walk through this channel, and destroy it.
387     * \param chptr channel pointer
388     */
389     void
390     destroy_channel(struct Channel *chptr)
391     {
392     dlink_node *ptr = NULL, *ptr_next = NULL;
393    
394     DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->invites.head)
395     del_invite(chptr, ptr->data);
396    
397     /* free ban/exception/invex lists */
398     free_channel_list(&chptr->banlist);
399     free_channel_list(&chptr->exceptlist);
400     free_channel_list(&chptr->invexlist);
401    
402     /* Free the topic */
403     free_topic(chptr);
404    
405     dlinkDelete(&chptr->node, &global_channel_list);
406     hash_del_channel(chptr);
407    
408     BlockHeapFree(channel_heap, chptr);
409     }
410    
411     /*!
412     * \param chptr pointer to channel
413     * \return string pointer "=" if public, "@" if secret else "*"
414     */
415     static const char *
416     channel_pub_or_secret(struct Channel *chptr)
417     {
418     if (SecretChannel(chptr))
419     return "@";
420 db 227 if (ParanoidChannel(chptr))
421 adx 30 return "*";
422     return "=";
423     }
424    
425     /*! \brief lists all names on given channel
426     * \param source_p pointer to client struct requesting names
427     * \param chptr pointer to channel block
428     * \param show_eon show ENDOFNAMES numeric or not
429     * (don't want it with /names with no params)
430     */
431     void
432     channel_member_names(struct Client *source_p, struct Channel *chptr,
433     int show_eon)
434     {
435     struct Client *target_p = NULL;
436     struct Membership *ms = NULL;
437     dlink_node *ptr = NULL;
438     char lbuf[IRCD_BUFSIZE + 1];
439     char *t = NULL, *start = NULL;
440     int tlen = 0;
441     int is_member = IsMember(source_p, chptr);
442 michael 502 int multi_prefix = (source_p->localClient->cap_active & CAP_MULTI_PREFIX) != 0;
443 adx 30
444     if (PubChannel(chptr) || is_member)
445     {
446     t = lbuf + ircsprintf(lbuf, form_str(RPL_NAMREPLY),
447     me.name, source_p->name,
448     channel_pub_or_secret(chptr),
449     chptr->chname);
450     start = t;
451    
452     DLINK_FOREACH(ptr, chptr->members.head)
453     {
454     ms = ptr->data;
455     target_p = ms->client_p;
456    
457     if (IsInvisible(target_p) && !is_member)
458     continue;
459    
460     tlen = strlen(target_p->name) + 1; /* nick + space */
461    
462     if (ms->flags & (CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE))
463     ++tlen;
464     if (t + tlen - lbuf > IRCD_BUFSIZE)
465     {
466     *(t - 1) = '\0';
467     sendto_one(source_p, "%s", lbuf);
468     t = start;
469     }
470    
471 michael 502 t += ircsprintf(t, "%s%s ", get_member_status(ms, multi_prefix),
472 adx 30 target_p->name);
473     }
474    
475     if (tlen != 0)
476     {
477     *(t - 1) = '\0';
478     sendto_one(source_p, "%s", lbuf);
479     }
480     }
481    
482     if (show_eon)
483     sendto_one(source_p, form_str(RPL_ENDOFNAMES),
484     me.name, source_p->name, chptr->chname);
485     }
486    
487     /*! \brief adds client to invite list
488     * \param chptr pointer to channel block
489     * \param who pointer to client to add invite to
490     */
491     void
492     add_invite(struct Channel *chptr, struct Client *who)
493     {
494     del_invite(chptr, who);
495    
496     /*
497     * delete last link in chain if the list is max length
498     */
499 michael 315 if (dlink_list_length(&who->localClient->invited) >=
500 adx 30 ConfigChannel.max_chans_per_user)
501 michael 315 del_invite(who->localClient->invited.tail->data, who);
502 adx 30
503     /* add client to channel invite list */
504     dlinkAdd(who, make_dlink_node(), &chptr->invites);
505    
506     /* add channel to the end of the client invite list */
507 michael 315 dlinkAdd(chptr, make_dlink_node(), &who->localClient->invited);
508 adx 30 }
509    
510     /*! \brief Delete Invite block from channel invite list
511     * and client invite list
512     * \param chptr pointer to Channel struct
513     * \param who pointer to client to remove invites from
514     */
515     void
516     del_invite(struct Channel *chptr, struct Client *who)
517     {
518     dlink_node *ptr = NULL;
519    
520 michael 315 if ((ptr = dlinkFindDelete(&who->localClient->invited, chptr)))
521 adx 30 free_dlink_node(ptr);
522    
523     if ((ptr = dlinkFindDelete(&chptr->invites, who)))
524     free_dlink_node(ptr);
525     }
526    
527     /* get_member_status()
528     *
529     * inputs - pointer to struct Membership
530     * - YES if we can combine different flags
531     * output - string either @, +, % or "" depending on whether
532     * chanop, voiced or user
533     * side effects -
534     *
535     * NOTE: Returned string is usually a static buffer
536     * (like in get_client_name)
537     */
538     const char *
539     get_member_status(const struct Membership *ms, int combine)
540     {
541     static char buffer[4];
542     char *p = NULL;
543    
544     if (ms == NULL)
545     return "";
546     p = buffer;
547    
548     if (ms->flags & CHFL_CHANOP)
549     {
550     if (!combine)
551     return "@";
552     *p++ = '@';
553     }
554    
555     #ifdef HALFOPS
556     if (ms->flags & CHFL_HALFOP)
557     {
558     if (!combine)
559     return "%";
560     *p++ = '%';
561     }
562     #endif
563    
564     if (ms->flags & CHFL_VOICE)
565     *p++ = '+';
566     *p = '\0';
567    
568     return buffer;
569     }
570    
571     /*!
572     * \param who pointer to Client to check
573     * \param list pointer to ban list to search
574     * \return 1 if ban found for given n!u\@h mask, 0 otherwise
575     *
576     */
577     static int
578     find_bmask(const struct Client *who, const dlink_list *const list)
579     {
580     const dlink_node *ptr = NULL;
581    
582     DLINK_FOREACH(ptr, list->head)
583     {
584 michael 364 struct Ban *bp = ptr->data;
585 adx 30
586 michael 364 if (match(bp->name, who->name) && match(bp->username, who->username))
587     {
588     switch (bp->type)
589     {
590     case HM_HOST:
591     if (match(bp->host, who->host) || match(bp->host, who->sockhost))
592     return 1;
593     break;
594     case HM_IPV4:
595     if (who->localClient->aftype == AF_INET)
596     if (match_ipv4(&who->localClient->ip, &bp->addr, bp->bits))
597     return 1;
598     break;
599     #ifdef IPV6
600     case HM_IPV6:
601     if (who->localClient->aftype == AF_INET6)
602     if (match_ipv6(&who->localClient->ip, &bp->addr, bp->bits))
603     return 1;
604     break;
605     #endif
606     default:
607     assert(0);
608     }
609     }
610 adx 30 }
611    
612     return 0;
613     }
614    
615     /*!
616     * \param chptr pointer to channel block
617     * \param who pointer to client to check access fo
618     * \return 0 if not banned, 1 otherwise
619     */
620     int
621 michael 449 is_banned(const struct Channel *chptr, const struct Client *who)
622 adx 30 {
623     assert(IsClient(who));
624    
625 michael 449 if (find_bmask(who, &chptr->banlist))
626     if (!ConfigChannel.use_except || !find_bmask(who, &chptr->exceptlist))
627     return 1;
628    
629     return 0;
630 adx 30 }
631    
632     /*!
633     * \param source_p pointer to client attempting to join
634     * \param chptr pointer to channel
635     * \param key key sent by client attempting to join if present
636     * \return ERR_BANNEDFROMCHAN, ERR_INVITEONLYCHAN, ERR_CHANNELISFULL
637     * or 0 if allowed to join.
638     */
639     int
640     can_join(struct Client *source_p, struct Channel *chptr, const char *key)
641     {
642 michael 449 if (is_banned(chptr, source_p))
643     return ERR_BANNEDFROMCHAN;
644 adx 30
645     if (chptr->mode.mode & MODE_INVITEONLY)
646 michael 315 if (!dlinkFind(&source_p->localClient->invited, chptr))
647 adx 30 if (!ConfigChannel.use_invex || !find_bmask(source_p, &chptr->invexlist))
648     return ERR_INVITEONLYCHAN;
649    
650     if (chptr->mode.key[0] && (EmptyString(key) || irccmp(chptr->mode.key, key)))
651     return ERR_BADCHANNELKEY;
652    
653     if (chptr->mode.limit && dlink_list_length(&chptr->members) >=
654     chptr->mode.limit)
655     return ERR_CHANNELISFULL;
656    
657     return 0;
658     }
659    
660     int
661     has_member_flags(struct Membership *ms, unsigned int flags)
662     {
663     if (ms != NULL)
664     return ms->flags & flags;
665     return 0;
666     }
667    
668     struct Membership *
669     find_channel_link(struct Client *client_p, struct Channel *chptr)
670     {
671     dlink_node *ptr = NULL;
672    
673     if (!IsClient(client_p))
674     return NULL;
675    
676     DLINK_FOREACH(ptr, client_p->channel.head)
677     if (((struct Membership *)ptr->data)->chptr == chptr)
678     return (struct Membership *)ptr->data;
679    
680     return NULL;
681     }
682    
683     /*!
684     * \param chptr pointer to Channel struct
685     * \param source_p pointer to Client struct
686 michael 453 * \param ms pointer to Membership struct (can be NULL)
687 adx 30 * \return CAN_SEND_OPV if op or voiced on channel\n
688     * CAN_SEND_NONOP if can send to channel but is not an op\n
689     * CAN_SEND_NO if they cannot send to channel\n
690     */
691     int
692 db 460 can_send(struct Channel *chptr, struct Client *source_p, struct Membership *ms)
693 adx 30 {
694     if (IsServer(source_p))
695     return CAN_SEND_OPV;
696    
697     if (MyClient(source_p) && !IsExemptResv(source_p) &&
698     !(IsOper(source_p) && ConfigFileEntry.oper_pass_resv) &&
699     (!hash_find_resv(chptr->chname) == ConfigChannel.restrict_channels))
700     return CAN_SEND_NO;
701    
702 michael 453 if (ms != NULL || (ms = find_channel_link(source_p, chptr)))
703 adx 30 {
704 michael 453 if (ms->flags & (CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE))
705 adx 30 return CAN_SEND_OPV;
706    
707     /* cache can send if quiet_on_ban and banned */
708     if (ConfigChannel.quiet_on_ban && MyClient(source_p))
709     {
710     if (ms->flags & CHFL_BAN_SILENCED)
711     return CAN_SEND_NO;
712    
713     if (!(ms->flags & CHFL_BAN_CHECKED))
714     {
715     if (is_banned(chptr, source_p))
716     {
717     ms->flags |= (CHFL_BAN_CHECKED|CHFL_BAN_SILENCED);
718     return CAN_SEND_NO;
719     }
720    
721     ms->flags |= CHFL_BAN_CHECKED;
722     }
723     }
724     }
725 michael 455 else if (chptr->mode.mode & MODE_NOPRIVMSGS)
726     return CAN_SEND_NO;
727 adx 30
728 michael 455 if (chptr->mode.mode & MODE_MODERATED)
729 adx 30 return CAN_SEND_NO;
730    
731     return CAN_SEND_NONOP;
732     }
733    
734     /*! \brief Updates the client's oper_warn_count_down, warns the
735     * IRC operators if necessary, and updates
736     * join_leave_countdown as needed.
737     * \param source_p pointer to struct Client to check
738     * \param name channel name or NULL if this is a part.
739     */
740     void
741     check_spambot_warning(struct Client *source_p, const char *name)
742     {
743     int t_delta = 0;
744     int decrement_count = 0;
745    
746     if ((GlobalSetOptions.spam_num &&
747     (source_p->localClient->join_leave_count >=
748     GlobalSetOptions.spam_num)))
749     {
750     if (source_p->localClient->oper_warn_count_down > 0)
751     source_p->localClient->oper_warn_count_down--;
752     else
753     source_p->localClient->oper_warn_count_down = 0;
754    
755     if (source_p->localClient->oper_warn_count_down == 0)
756     {
757     /* Its already known as a possible spambot */
758     if (name != NULL)
759     sendto_realops_flags(UMODE_BOTS, L_ALL,
760     "User %s (%s@%s) trying to join %s is a possible spambot",
761     source_p->name, source_p->username,
762     source_p->host, name);
763     else
764     sendto_realops_flags(UMODE_BOTS, L_ALL,
765     "User %s (%s@%s) is a possible spambot",
766     source_p->name, source_p->username,
767     source_p->host);
768     source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN;
769     }
770     }
771     else
772     {
773     if ((t_delta = (CurrentTime - source_p->localClient->last_leave_time)) >
774     JOIN_LEAVE_COUNT_EXPIRE_TIME)
775     {
776     decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME);
777     if (decrement_count > source_p->localClient->join_leave_count)
778     source_p->localClient->join_leave_count = 0;
779     else
780     source_p->localClient->join_leave_count -= decrement_count;
781     }
782     else
783     {
784     if ((CurrentTime - (source_p->localClient->last_join_time)) <
785     GlobalSetOptions.spam_time)
786     {
787     /* oh, its a possible spambot */
788     source_p->localClient->join_leave_count++;
789     }
790     }
791    
792     if (name != NULL)
793     source_p->localClient->last_join_time = CurrentTime;
794     else
795     source_p->localClient->last_leave_time = CurrentTime;
796     }
797     }
798    
799     /*! \brief compares usercount and servercount against their split
800     * values and adjusts splitmode accordingly
801     * \param unused Unused address pointer
802     */
803     void
804     check_splitmode(void *unused)
805     {
806     if (splitchecking && (ConfigChannel.no_join_on_split ||
807     ConfigChannel.no_create_on_split))
808     {
809     const unsigned int server = dlink_list_length(&global_serv_list);
810    
811     if (!splitmode && ((server < split_servers) || (Count.total < split_users)))
812     {
813     splitmode = 1;
814    
815     sendto_realops_flags(UMODE_ALL,L_ALL,
816     "Network split, activating splitmode");
817     eventAddIsh("check_splitmode", check_splitmode, NULL, 10);
818     }
819     else if (splitmode && (server > split_servers) && (Count.total > split_users))
820     {
821     splitmode = 0;
822    
823     sendto_realops_flags(UMODE_ALL, L_ALL,
824     "Network rejoined, deactivating splitmode");
825     eventDelete(check_splitmode, NULL);
826     }
827     }
828     }
829    
830     /*! \brief Allocates a new topic
831     * \param chptr Channel to allocate a new topic for
832     */
833     static void
834     allocate_topic(struct Channel *chptr)
835     {
836     void *ptr = NULL;
837 michael 449 assert(chptr);
838 adx 30
839     ptr = BlockHeapAlloc(topic_heap);
840    
841     /* Basically we allocate one large block for the topic and
842     * the topic info. We then split it up into two and shove it
843     * in the chptr
844     */
845     chptr->topic = ptr;
846     chptr->topic_info = (char *)ptr + TOPICLEN+1;
847     *chptr->topic = '\0';
848     *chptr->topic_info = '\0';
849     }
850    
851     void
852     free_topic(struct Channel *chptr)
853     {
854     void *ptr = NULL;
855     assert(chptr);
856     if (chptr->topic == NULL)
857     return;
858    
859     /*
860     * If you change allocate_topic you MUST change this as well
861     */
862     ptr = chptr->topic;
863     BlockHeapFree(topic_heap, ptr);
864     chptr->topic = NULL;
865     chptr->topic_info = NULL;
866     }
867    
868     /*! \brief Sets the channel topic for chptr
869     * \param chptr Pointer to struct Channel
870     * \param topic The topic string
871     * \param topic_info n!u\@h formatted string of the topic setter
872     * \param topicts timestamp on the topic
873     */
874     void
875     set_channel_topic(struct Channel *chptr, const char *topic,
876     const char *topic_info, time_t topicts)
877     {
878     if (!EmptyString(topic))
879     {
880     if (chptr->topic == NULL)
881     allocate_topic(chptr);
882    
883     strlcpy(chptr->topic, topic, TOPICLEN+1);
884     strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN);
885     chptr->topic_time = topicts;
886     }
887     else
888     {
889     if (chptr->topic != NULL)
890     free_topic(chptr);
891    
892     chptr->topic_time = 0;
893     }
894     }
895    

Properties

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

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.28