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root/svn/ircd-hybrid-8/src/channel.c
Revision: 1429
Committed: Thu Jun 7 19:14:14 2012 UTC (11 years, 9 months ago) by michael
Content type: text/x-csrc
File size: 23984 byte(s)
Log Message:
- Unregistered clients may not talk in a +R channel

File Contents

# User Rev Content
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 michael 1011 #include "list.h"
29 adx 30 #include "channel.h"
30     #include "channel_mode.h"
31     #include "client.h"
32     #include "hash.h"
33 michael 371 #include "hostmask.h"
34 adx 30 #include "irc_string.h"
35     #include "sprintf_irc.h"
36     #include "ircd.h"
37     #include "numeric.h"
38     #include "s_serv.h" /* captab */
39     #include "s_user.h"
40     #include "send.h"
41 michael 1309 #include "conf.h" /* ConfigFileEntry, ConfigChannel */
42 adx 30 #include "event.h"
43     #include "memory.h"
44     #include "balloc.h"
45    
46     struct config_channel_entry ConfigChannel;
47     dlink_list global_channel_list = { NULL, NULL, 0 };
48     BlockHeap *ban_heap; /*! \todo ban_heap shouldn't be a global var */
49    
50     static BlockHeap *member_heap = NULL;
51     static BlockHeap *channel_heap = NULL;
52    
53     static char buf[IRCD_BUFSIZE];
54     static char modebuf[MODEBUFLEN];
55     static char parabuf[MODEBUFLEN];
56    
57    
58     /*! \brief Initializes the channel blockheap, adds known channel CAPAB
59     */
60     void
61     init_channels(void)
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     member_heap = BlockHeapCreate("member", sizeof(struct Membership), CHANNEL_HEAP_SIZE*2);
70     }
71    
72     /*! \brief adds a user to a channel by adding another link to the
73     * channels member chain.
74     * \param chptr pointer to channel to add client to
75     * \param who pointer to client (who) to add
76     * \param flags flags for chanops etc
77     * \param flood_ctrl whether to count this join in flood calculations
78     */
79     void
80     add_user_to_channel(struct Channel *chptr, struct Client *who,
81     unsigned int flags, int flood_ctrl)
82     {
83     struct Membership *ms = NULL;
84    
85     if (GlobalSetOptions.joinfloodtime > 0)
86     {
87     if (flood_ctrl)
88     chptr->number_joined++;
89    
90     chptr->number_joined -= (CurrentTime - chptr->last_join_time) *
91     (((float)GlobalSetOptions.joinfloodcount) /
92     (float)GlobalSetOptions.joinfloodtime);
93    
94     if (chptr->number_joined <= 0)
95     {
96     chptr->number_joined = 0;
97     ClearJoinFloodNoticed(chptr);
98     }
99     else if (chptr->number_joined >= GlobalSetOptions.joinfloodcount)
100     {
101     chptr->number_joined = GlobalSetOptions.joinfloodcount;
102    
103     if (!IsSetJoinFloodNoticed(chptr))
104     {
105     SetJoinFloodNoticed(chptr);
106     sendto_realops_flags(UMODE_BOTS, L_ALL,
107     "Possible Join Flooder %s on %s target: %s",
108     get_client_name(who, HIDE_IP),
109     who->servptr->name, chptr->chname);
110     }
111     }
112    
113     chptr->last_join_time = CurrentTime;
114     }
115    
116     ms = BlockHeapAlloc(member_heap);
117     ms->client_p = who;
118     ms->chptr = chptr;
119     ms->flags = flags;
120    
121     dlinkAdd(ms, &ms->channode, &chptr->members);
122     dlinkAdd(ms, &ms->usernode, &who->channel);
123     }
124    
125     /*! \brief deletes an user from a channel by removing a link in the
126     * channels member chain.
127     * \param member pointer to Membership struct
128     */
129     void
130     remove_user_from_channel(struct Membership *member)
131     {
132     struct Client *client_p = member->client_p;
133     struct Channel *chptr = member->chptr;
134    
135     dlinkDelete(&member->channode, &chptr->members);
136     dlinkDelete(&member->usernode, &client_p->channel);
137    
138     BlockHeapFree(member_heap, member);
139    
140 michael 1011 if (chptr->members.head == NULL)
141 adx 30 destroy_channel(chptr);
142     }
143    
144     /* send_members()
145     *
146     * inputs -
147     * output - NONE
148     * side effects -
149     */
150     static void
151     send_members(struct Client *client_p, struct Channel *chptr,
152     char *lmodebuf, char *lparabuf)
153     {
154     struct Membership *ms;
155     dlink_node *ptr;
156     int tlen; /* length of text to append */
157     char *t, *start; /* temp char pointer */
158    
159     start = t = buf + ircsprintf(buf, ":%s SJOIN %lu %s %s %s:",
160     ID_or_name(&me, client_p),
161     (unsigned long)chptr->channelts,
162     chptr->chname, lmodebuf, lparabuf);
163    
164     DLINK_FOREACH(ptr, chptr->members.head)
165     {
166     ms = ptr->data;
167    
168     tlen = strlen(IsCapable(client_p, CAP_TS6) ?
169     ID(ms->client_p) : ms->client_p->name) + 1; /* nick + space */
170    
171     if (ms->flags & CHFL_CHANOP)
172     tlen++;
173     #ifdef HALFOPS
174 adx 356 else if (ms->flags & CHFL_HALFOP)
175 adx 30 tlen++;
176     #endif
177     if (ms->flags & CHFL_VOICE)
178     tlen++;
179    
180     /* space will be converted into CR, but we also need space for LF..
181     * That's why we use '- 1' here
182     * -adx */
183 michael 1330 if (t + tlen - buf > IRCD_BUFSIZE - 1)
184 adx 30 {
185     *(t - 1) = '\0'; /* kill the space and terminate the string */
186     sendto_one(client_p, "%s", buf);
187     t = start;
188     }
189    
190 adx 356 if ((ms->flags & (CHFL_CHANOP | CHFL_HALFOP)))
191     *t++ = (!(ms->flags & CHFL_CHANOP) && IsCapable(client_p, CAP_HOPS)) ?
192     '%' : '@';
193     if ((ms->flags & CHFL_VOICE))
194     *t++ = '+';
195 adx 30
196     if (IsCapable(client_p, CAP_TS6))
197     strcpy(t, ID(ms->client_p));
198     else
199     strcpy(t, ms->client_p->name);
200     t += strlen(t);
201     *t++ = ' ';
202     }
203    
204     /* should always be non-NULL unless we have a kind of persistent channels */
205     if (chptr->members.head != NULL)
206     t--; /* take the space out */
207     *t = '\0';
208     sendto_one(client_p, "%s", buf);
209     }
210    
211     /*! \brief sends +b/+e/+I
212     * \param client_p client pointer to server
213     * \param chptr pointer to channel
214     * \param top pointer to top of mode link list to send
215     * \param flag char flag flagging type of mode. Currently this can be 'b', e' or 'I'
216     */
217     static void
218     send_mode_list(struct Client *client_p, struct Channel *chptr,
219     dlink_list *top, char flag)
220     {
221     int ts5 = !IsCapable(client_p, CAP_TS6);
222     dlink_node *lp;
223     struct Ban *banptr;
224     char pbuf[IRCD_BUFSIZE];
225     int tlen, mlen, cur_len, count = 0;
226     char *mp = NULL, *pp = pbuf;
227    
228     if (top == NULL || top->length == 0)
229     return;
230    
231     if (ts5)
232     mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chptr->chname);
233     else
234     mlen = ircsprintf(buf, ":%s BMASK %lu %s %c :", me.id,
235     (unsigned long)chptr->channelts, chptr->chname, flag);
236    
237     /* MODE needs additional one byte for space between buf and pbuf */
238     cur_len = mlen + ts5;
239     mp = buf + mlen;
240    
241     DLINK_FOREACH(lp, top->head)
242     {
243     banptr = lp->data;
244    
245     /* must add another b/e/I letter if we use MODE */
246     tlen = banptr->len + 3 + ts5;
247    
248     /*
249     * send buffer and start over if we cannot fit another ban,
250     * or if the target is non-ts6 and we have too many modes in
251     * in this line.
252     */
253     if (cur_len + (tlen - 1) > IRCD_BUFSIZE - 2 ||
254     (!IsCapable(client_p, CAP_TS6) &&
255     (count >= MAXMODEPARAMS || pp - pbuf >= MODEBUFLEN)))
256     {
257     *(pp - 1) = '\0'; /* get rid of trailing space on buffer */
258     sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
259    
260     cur_len = mlen + ts5;
261     mp = buf + mlen;
262     pp = pbuf;
263     count = 0;
264     }
265    
266     count++;
267     if (ts5)
268     {
269     *mp++ = flag;
270     *mp = '\0';
271     }
272    
273     pp += ircsprintf(pp, "%s!%s@%s ", banptr->name, banptr->username,
274     banptr->host);
275     cur_len += tlen;
276     }
277    
278     *(pp - 1) = '\0'; /* get rid of trailing space on buffer */
279     sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
280     }
281    
282     /*! \brief send "client_p" a full list of the modes for channel chptr
283     * \param client_p pointer to client client_p
284     * \param chptr pointer to channel pointer
285     */
286     void
287     send_channel_modes(struct Client *client_p, struct Channel *chptr)
288     {
289     if (chptr->chname[0] != '#')
290     return;
291    
292     *modebuf = *parabuf = '\0';
293     channel_modes(chptr, client_p, modebuf, parabuf);
294     send_members(client_p, chptr, modebuf, parabuf);
295    
296     send_mode_list(client_p, chptr, &chptr->banlist, 'b');
297    
298     if (IsCapable(client_p, CAP_EX))
299     send_mode_list(client_p, chptr, &chptr->exceptlist, 'e');
300     if (IsCapable(client_p, CAP_IE))
301     send_mode_list(client_p, chptr, &chptr->invexlist, 'I');
302     }
303    
304     /*! \brief check channel name for invalid characters
305     * \param name pointer to channel name string
306 michael 632 * \param local indicates whether it's a local or remote creation
307     * \return 0 if invalid, 1 otherwise
308 adx 30 */
309     int
310 michael 632 check_channel_name(const char *name, int local)
311 adx 30 {
312 michael 632 const char *p = name;
313     int max_length = local ? LOCAL_CHANNELLEN : CHANNELLEN;
314 adx 30 assert(name != NULL);
315    
316 michael 632 if (!IsChanPrefix(*p))
317     return 0;
318 adx 30
319 db 633 if (!local || !ConfigChannel.disable_fake_channels)
320 michael 632 {
321     while (*++p)
322 db 634 if (!IsChanChar(*p))
323 michael 632 return 0;
324     }
325     else
326     {
327     while (*++p)
328 db 634 if (!IsVisibleChanChar(*p))
329 michael 632 return 0;
330     }
331    
332     return p - name <= max_length;
333 adx 30 }
334    
335     void
336     remove_ban(struct Ban *bptr, dlink_list *list)
337     {
338     dlinkDelete(&bptr->node, list);
339    
340     MyFree(bptr->name);
341     MyFree(bptr->username);
342     MyFree(bptr->host);
343     MyFree(bptr->who);
344    
345     BlockHeapFree(ban_heap, bptr);
346     }
347    
348     /* free_channel_list()
349     *
350     * inputs - pointer to dlink_list
351     * output - NONE
352     * side effects -
353     */
354     void
355     free_channel_list(dlink_list *list)
356     {
357     dlink_node *ptr = NULL, *next_ptr = NULL;
358    
359     DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
360     remove_ban(ptr->data, list);
361    
362     assert(list->tail == NULL && list->head == NULL);
363     }
364    
365     /*! \brief Get Channel block for chname (and allocate a new channel
366     * block, if it didn't exist before)
367 michael 632 * \param chname channel name
368     * \return channel block
369 adx 30 */
370     struct Channel *
371 michael 632 make_channel(const char *chname)
372 adx 30 {
373     struct Channel *chptr = NULL;
374    
375 michael 632 assert(!EmptyString(chname));
376 adx 30
377 michael 632 chptr = BlockHeapAlloc(channel_heap);
378 adx 30
379     /* doesn't hurt to set it here */
380 michael 632 chptr->channelts = CurrentTime;
381     chptr->last_join_time = CurrentTime;
382 adx 30
383     strlcpy(chptr->chname, chname, sizeof(chptr->chname));
384     dlinkAdd(chptr, &chptr->node, &global_channel_list);
385    
386     hash_add_channel(chptr);
387    
388     return chptr;
389     }
390    
391     /*! \brief walk through this channel, and destroy it.
392     * \param chptr channel pointer
393     */
394     void
395     destroy_channel(struct Channel *chptr)
396     {
397     dlink_node *ptr = NULL, *ptr_next = NULL;
398    
399     DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->invites.head)
400     del_invite(chptr, ptr->data);
401    
402     /* free ban/exception/invex lists */
403     free_channel_list(&chptr->banlist);
404     free_channel_list(&chptr->exceptlist);
405     free_channel_list(&chptr->invexlist);
406    
407     dlinkDelete(&chptr->node, &global_channel_list);
408     hash_del_channel(chptr);
409    
410     BlockHeapFree(channel_heap, chptr);
411     }
412    
413     /*!
414     * \param chptr pointer to channel
415     * \return string pointer "=" if public, "@" if secret else "*"
416     */
417     static const char *
418 michael 1013 channel_pub_or_secret(const struct Channel *chptr)
419 adx 30 {
420     if (SecretChannel(chptr))
421     return "@";
422     if (PrivateChannel(chptr))
423     return "*";
424     return "=";
425     }
426    
427     /*! \brief lists all names on given channel
428     * \param source_p pointer to client struct requesting names
429     * \param chptr pointer to channel block
430     * \param show_eon show ENDOFNAMES numeric or not
431     * (don't want it with /names with no params)
432     */
433     void
434     channel_member_names(struct Client *source_p, struct Channel *chptr,
435     int show_eon)
436     {
437     struct Client *target_p = NULL;
438     struct Membership *ms = NULL;
439     dlink_node *ptr = NULL;
440     char lbuf[IRCD_BUFSIZE + 1];
441     char *t = NULL, *start = NULL;
442     int tlen = 0;
443     int is_member = IsMember(source_p, chptr);
444 michael 1146 int multi_prefix = HasCap(source_p, CAP_MULTI_PREFIX) != 0;
445 adx 30
446     if (PubChannel(chptr) || is_member)
447     {
448     t = lbuf + ircsprintf(lbuf, form_str(RPL_NAMREPLY),
449     me.name, source_p->name,
450     channel_pub_or_secret(chptr),
451     chptr->chname);
452     start = t;
453    
454     DLINK_FOREACH(ptr, chptr->members.head)
455     {
456     ms = ptr->data;
457     target_p = ms->client_p;
458    
459 michael 1219 if (HasUMode(target_p, UMODE_INVISIBLE) && !is_member)
460 adx 30 continue;
461    
462     tlen = strlen(target_p->name) + 1; /* nick + space */
463    
464 michael 506 if (!multi_prefix)
465     {
466     if (ms->flags & (CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE))
467     ++tlen;
468     }
469     else
470     {
471     if (ms->flags & CHFL_CHANOP)
472     ++tlen;
473     if (ms->flags & CHFL_HALFOP)
474     ++tlen;
475     if (ms->flags & CHFL_VOICE)
476     ++tlen;
477     }
478    
479 adx 675 if (t + tlen - lbuf > IRCD_BUFSIZE - 2)
480 adx 30 {
481     *(t - 1) = '\0';
482     sendto_one(source_p, "%s", lbuf);
483     t = start;
484     }
485    
486 michael 503 t += ircsprintf(t, "%s%s ", get_member_status(ms, multi_prefix),
487 adx 30 target_p->name);
488     }
489    
490     if (tlen != 0)
491     {
492     *(t - 1) = '\0';
493     sendto_one(source_p, "%s", lbuf);
494     }
495     }
496    
497     if (show_eon)
498     sendto_one(source_p, form_str(RPL_ENDOFNAMES),
499     me.name, source_p->name, chptr->chname);
500     }
501    
502     /*! \brief adds client to invite list
503     * \param chptr pointer to channel block
504     * \param who pointer to client to add invite to
505     */
506     void
507     add_invite(struct Channel *chptr, struct Client *who)
508     {
509     del_invite(chptr, who);
510    
511     /*
512     * delete last link in chain if the list is max length
513     */
514 michael 317 if (dlink_list_length(&who->localClient->invited) >=
515 adx 30 ConfigChannel.max_chans_per_user)
516 michael 317 del_invite(who->localClient->invited.tail->data, who);
517 adx 30
518     /* add client to channel invite list */
519     dlinkAdd(who, make_dlink_node(), &chptr->invites);
520    
521     /* add channel to the end of the client invite list */
522 michael 317 dlinkAdd(chptr, make_dlink_node(), &who->localClient->invited);
523 adx 30 }
524    
525     /*! \brief Delete Invite block from channel invite list
526     * and client invite list
527     * \param chptr pointer to Channel struct
528     * \param who pointer to client to remove invites from
529     */
530     void
531     del_invite(struct Channel *chptr, struct Client *who)
532     {
533     dlink_node *ptr = NULL;
534    
535 michael 317 if ((ptr = dlinkFindDelete(&who->localClient->invited, chptr)))
536 adx 30 free_dlink_node(ptr);
537    
538     if ((ptr = dlinkFindDelete(&chptr->invites, who)))
539     free_dlink_node(ptr);
540     }
541    
542     /* get_member_status()
543     *
544     * inputs - pointer to struct Membership
545     * - YES if we can combine different flags
546     * output - string either @, +, % or "" depending on whether
547     * chanop, voiced or user
548     * side effects -
549     *
550     * NOTE: Returned string is usually a static buffer
551     * (like in get_client_name)
552     */
553     const char *
554     get_member_status(const struct Membership *ms, int combine)
555     {
556     static char buffer[4];
557     char *p = NULL;
558    
559     if (ms == NULL)
560     return "";
561     p = buffer;
562    
563     if (ms->flags & CHFL_CHANOP)
564     {
565     if (!combine)
566     return "@";
567     *p++ = '@';
568     }
569    
570     #ifdef HALFOPS
571     if (ms->flags & CHFL_HALFOP)
572     {
573     if (!combine)
574     return "%";
575     *p++ = '%';
576     }
577     #endif
578    
579     if (ms->flags & CHFL_VOICE)
580     *p++ = '+';
581     *p = '\0';
582    
583     return buffer;
584     }
585    
586     /*!
587     * \param who pointer to Client to check
588     * \param list pointer to ban list to search
589     * \return 1 if ban found for given n!u\@h mask, 0 otherwise
590     *
591     */
592     static int
593     find_bmask(const struct Client *who, const dlink_list *const list)
594     {
595     const dlink_node *ptr = NULL;
596    
597     DLINK_FOREACH(ptr, list->head)
598     {
599 michael 371 struct Ban *bp = ptr->data;
600 adx 30
601 michael 371 if (match(bp->name, who->name) && match(bp->username, who->username))
602     {
603     switch (bp->type)
604     {
605     case HM_HOST:
606     if (match(bp->host, who->host) || match(bp->host, who->sockhost))
607     return 1;
608     break;
609     case HM_IPV4:
610     if (who->localClient->aftype == AF_INET)
611     if (match_ipv4(&who->localClient->ip, &bp->addr, bp->bits))
612     return 1;
613     break;
614     #ifdef IPV6
615     case HM_IPV6:
616     if (who->localClient->aftype == AF_INET6)
617     if (match_ipv6(&who->localClient->ip, &bp->addr, bp->bits))
618     return 1;
619     break;
620     #endif
621     default:
622     assert(0);
623     }
624     }
625 adx 30 }
626    
627     return 0;
628     }
629    
630     /*!
631     * \param chptr pointer to channel block
632     * \param who pointer to client to check access fo
633     * \return 0 if not banned, 1 otherwise
634     */
635     int
636 michael 1013 is_banned(const struct Channel *chptr, const struct Client *who)
637 adx 30 {
638 michael 632 if (find_bmask(who, &chptr->banlist))
639     if (!ConfigChannel.use_except || !find_bmask(who, &chptr->exceptlist))
640     return 1;
641 adx 30
642 michael 632 return 0;
643 adx 30 }
644    
645     /*!
646     * \param source_p pointer to client attempting to join
647     * \param chptr pointer to channel
648     * \param key key sent by client attempting to join if present
649     * \return ERR_BANNEDFROMCHAN, ERR_INVITEONLYCHAN, ERR_CHANNELISFULL
650     * or 0 if allowed to join.
651     */
652     int
653     can_join(struct Client *source_p, struct Channel *chptr, const char *key)
654     {
655 michael 632 if (is_banned(chptr, source_p))
656     return ERR_BANNEDFROMCHAN;
657 adx 30
658 michael 1150 #ifdef HAVE_LIBCRYPTO
659     if ((chptr->mode.mode & MODE_SSLONLY) && !source_p->localClient->fd.ssl)
660     return ERR_SSLONLYCHAN;
661     #endif
662    
663 michael 1173 if ((chptr->mode.mode & MODE_REGONLY) && !HasUMode(source_p, UMODE_REGISTERED))
664     return ERR_NEEDREGGEDNICK;
665    
666 michael 1219 if ((chptr->mode.mode & MODE_OPERONLY) && !HasUMode(source_p, UMODE_OPER))
667 michael 1150 return ERR_OPERONLYCHAN;
668    
669 adx 30 if (chptr->mode.mode & MODE_INVITEONLY)
670 michael 317 if (!dlinkFind(&source_p->localClient->invited, chptr))
671 adx 30 if (!ConfigChannel.use_invex || !find_bmask(source_p, &chptr->invexlist))
672     return ERR_INVITEONLYCHAN;
673    
674 michael 632 if (chptr->mode.key[0] && (!key || irccmp(chptr->mode.key, key)))
675 adx 30 return ERR_BADCHANNELKEY;
676    
677     if (chptr->mode.limit && dlink_list_length(&chptr->members) >=
678     chptr->mode.limit)
679     return ERR_CHANNELISFULL;
680    
681     return 0;
682     }
683    
684     int
685     has_member_flags(struct Membership *ms, unsigned int flags)
686     {
687     if (ms != NULL)
688     return ms->flags & flags;
689     return 0;
690     }
691    
692     struct Membership *
693     find_channel_link(struct Client *client_p, struct Channel *chptr)
694     {
695     dlink_node *ptr = NULL;
696    
697     if (!IsClient(client_p))
698     return NULL;
699    
700     DLINK_FOREACH(ptr, client_p->channel.head)
701     if (((struct Membership *)ptr->data)->chptr == chptr)
702 michael 1013 return ptr->data;
703 adx 30
704     return NULL;
705     }
706    
707     /*!
708     * \param chptr pointer to Channel struct
709     * \param source_p pointer to Client struct
710 michael 454 * \param ms pointer to Membership struct (can be NULL)
711 adx 30 * \return CAN_SEND_OPV if op or voiced on channel\n
712     * CAN_SEND_NONOP if can send to channel but is not an op\n
713 michael 1173 * ERR_CANNOTSENDTOCHAN or ERR_NEEDREGGEDNICK if they cannot send to channel\n
714 adx 30 */
715     int
716 michael 454 can_send(struct Channel *chptr, struct Client *source_p, struct Membership *ms)
717 adx 30 {
718 michael 1219 if (IsServer(source_p) || HasFlag(source_p, FLAGS_SERVICE))
719 adx 30 return CAN_SEND_OPV;
720    
721 michael 565 if (MyClient(source_p) && !IsExemptResv(source_p))
722 michael 1219 if (!(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.oper_pass_resv))
723 michael 567 if (!hash_find_resv(chptr->chname) == ConfigChannel.restrict_channels)
724 michael 1173 return ERR_CANNOTSENDTOCHAN;
725 adx 30
726 michael 454 if (ms != NULL || (ms = find_channel_link(source_p, chptr)))
727 adx 30 {
728     if (ms->flags & (CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE))
729     return CAN_SEND_OPV;
730    
731 michael 1429 if (chptr->mode.mode & MODE_REGONLY)
732     if (!HasUMode(source_p, UMODE_REGISTERED))
733     return ERR_NEEDREGGEDNICK;
734    
735 adx 30 /* cache can send if quiet_on_ban and banned */
736     if (ConfigChannel.quiet_on_ban && MyClient(source_p))
737     {
738     if (ms->flags & CHFL_BAN_SILENCED)
739 michael 1173 return ERR_CANNOTSENDTOCHAN;
740 adx 30
741     if (!(ms->flags & CHFL_BAN_CHECKED))
742     {
743     if (is_banned(chptr, source_p))
744     {
745     ms->flags |= (CHFL_BAN_CHECKED|CHFL_BAN_SILENCED);
746 michael 1173 return ERR_CANNOTSENDTOCHAN;
747 adx 30 }
748    
749     ms->flags |= CHFL_BAN_CHECKED;
750     }
751     }
752     }
753 michael 456 else if (chptr->mode.mode & MODE_NOPRIVMSGS)
754 michael 1173 return ERR_CANNOTSENDTOCHAN;
755 adx 30
756 michael 456 if (chptr->mode.mode & MODE_MODERATED)
757 michael 1173 return ERR_CANNOTSENDTOCHAN;
758 adx 30
759 michael 1429 if (chptr->mode.mode & MODE_REGONLY)
760     if (!HasUMode(source_p, UMODE_REGISTERED))
761     return ERR_NEEDREGGEDNICK;
762    
763 adx 30 return CAN_SEND_NONOP;
764     }
765    
766     /*! \brief Updates the client's oper_warn_count_down, warns the
767     * IRC operators if necessary, and updates
768     * join_leave_countdown as needed.
769     * \param source_p pointer to struct Client to check
770     * \param name channel name or NULL if this is a part.
771     */
772     void
773     check_spambot_warning(struct Client *source_p, const char *name)
774     {
775     int t_delta = 0;
776     int decrement_count = 0;
777    
778     if ((GlobalSetOptions.spam_num &&
779     (source_p->localClient->join_leave_count >=
780     GlobalSetOptions.spam_num)))
781     {
782     if (source_p->localClient->oper_warn_count_down > 0)
783     source_p->localClient->oper_warn_count_down--;
784     else
785     source_p->localClient->oper_warn_count_down = 0;
786    
787     if (source_p->localClient->oper_warn_count_down == 0)
788     {
789     /* Its already known as a possible spambot */
790     if (name != NULL)
791     sendto_realops_flags(UMODE_BOTS, L_ALL,
792     "User %s (%s@%s) trying to join %s is a possible spambot",
793     source_p->name, source_p->username,
794     source_p->host, name);
795     else
796     sendto_realops_flags(UMODE_BOTS, L_ALL,
797     "User %s (%s@%s) is a possible spambot",
798     source_p->name, source_p->username,
799     source_p->host);
800     source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN;
801     }
802     }
803     else
804     {
805     if ((t_delta = (CurrentTime - source_p->localClient->last_leave_time)) >
806     JOIN_LEAVE_COUNT_EXPIRE_TIME)
807     {
808     decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME);
809     if (decrement_count > source_p->localClient->join_leave_count)
810     source_p->localClient->join_leave_count = 0;
811     else
812     source_p->localClient->join_leave_count -= decrement_count;
813     }
814     else
815     {
816     if ((CurrentTime - (source_p->localClient->last_join_time)) <
817     GlobalSetOptions.spam_time)
818     {
819     /* oh, its a possible spambot */
820     source_p->localClient->join_leave_count++;
821     }
822     }
823    
824     if (name != NULL)
825     source_p->localClient->last_join_time = CurrentTime;
826     else
827     source_p->localClient->last_leave_time = CurrentTime;
828     }
829     }
830    
831     /*! \brief compares usercount and servercount against their split
832     * values and adjusts splitmode accordingly
833     * \param unused Unused address pointer
834     */
835     void
836     check_splitmode(void *unused)
837     {
838     if (splitchecking && (ConfigChannel.no_join_on_split ||
839     ConfigChannel.no_create_on_split))
840     {
841     const unsigned int server = dlink_list_length(&global_serv_list);
842    
843     if (!splitmode && ((server < split_servers) || (Count.total < split_users)))
844     {
845     splitmode = 1;
846    
847     sendto_realops_flags(UMODE_ALL,L_ALL,
848     "Network split, activating splitmode");
849     eventAddIsh("check_splitmode", check_splitmode, NULL, 10);
850     }
851     else if (splitmode && (server > split_servers) && (Count.total > split_users))
852     {
853     splitmode = 0;
854    
855     sendto_realops_flags(UMODE_ALL, L_ALL,
856     "Network rejoined, deactivating splitmode");
857     eventDelete(check_splitmode, NULL);
858     }
859     }
860     }
861    
862     /*! \brief Sets the channel topic for chptr
863     * \param chptr Pointer to struct Channel
864     * \param topic The topic string
865     * \param topic_info n!u\@h formatted string of the topic setter
866     * \param topicts timestamp on the topic
867     */
868     void
869     set_channel_topic(struct Channel *chptr, const char *topic,
870     const char *topic_info, time_t topicts)
871     {
872 michael 1203 strlcpy(chptr->topic, topic, sizeof(chptr->topic));
873     strlcpy(chptr->topic_info, topic_info, sizeof(chptr->topic_info));
874     chptr->topic_time = topicts;
875 adx 30 }

Properties

Name Value
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svn:keywords Id Revision