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root/svn/ircd-hybrid/trunk/src/channel.c
Revision: 1592
Committed: Sat Oct 27 21:02:32 2012 UTC (11 years, 5 months ago) by michael
Content type: text/x-csrc
File size: 23649 byte(s)
Log Message:
- Second time's the charm? Moving svnroot/ircd-hybrid-8 to
  svnroot/ircd-hybrid/trunk

File Contents

# Content
1 /*
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 * \version $Id$
25 */
26
27 #include "stdinc.h"
28 #include "list.h"
29 #include "channel.h"
30 #include "channel_mode.h"
31 #include "client.h"
32 #include "hash.h"
33 #include "hostmask.h"
34 #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 #include "conf.h" /* ConfigFileEntry, ConfigChannel */
42 #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 if (chptr->members.head == NULL)
141 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 else if (ms->flags & CHFL_HALFOP)
175 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 if (t + tlen - buf > IRCD_BUFSIZE - 1)
184 {
185 *(t - 1) = '\0'; /* kill the space and terminate the string */
186 sendto_one(client_p, "%s", buf);
187 t = start;
188 }
189
190 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
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 *modebuf = *parabuf = '\0';
290 channel_modes(chptr, client_p, modebuf, parabuf);
291 send_members(client_p, chptr, modebuf, parabuf);
292
293 send_mode_list(client_p, chptr, &chptr->banlist, 'b');
294
295 if (IsCapable(client_p, CAP_EX))
296 send_mode_list(client_p, chptr, &chptr->exceptlist, 'e');
297 if (IsCapable(client_p, CAP_IE))
298 send_mode_list(client_p, chptr, &chptr->invexlist, 'I');
299 }
300
301 /*! \brief check channel name for invalid characters
302 * \param name pointer to channel name string
303 * \param local indicates whether it's a local or remote creation
304 * \return 0 if invalid, 1 otherwise
305 */
306 int
307 check_channel_name(const char *name, int local)
308 {
309 const char *p = name;
310 const int max_length = local ? LOCAL_CHANNELLEN : CHANNELLEN;
311 assert(name != NULL);
312
313 if (!IsChanPrefix(*p))
314 return 0;
315
316 if (!local || !ConfigChannel.disable_fake_channels)
317 {
318 while (*++p)
319 if (!IsChanChar(*p))
320 return 0;
321 }
322 else
323 {
324 while (*++p)
325 if (!IsVisibleChanChar(*p))
326 return 0;
327 }
328
329 return p - name <= max_length;
330 }
331
332 void
333 remove_ban(struct Ban *bptr, dlink_list *list)
334 {
335 dlinkDelete(&bptr->node, list);
336
337 MyFree(bptr->name);
338 MyFree(bptr->username);
339 MyFree(bptr->host);
340 MyFree(bptr->who);
341
342 BlockHeapFree(ban_heap, bptr);
343 }
344
345 /* free_channel_list()
346 *
347 * inputs - pointer to dlink_list
348 * output - NONE
349 * side effects -
350 */
351 void
352 free_channel_list(dlink_list *list)
353 {
354 dlink_node *ptr = NULL, *next_ptr = NULL;
355
356 DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
357 remove_ban(ptr->data, list);
358
359 assert(list->tail == NULL && list->head == NULL);
360 }
361
362 /*! \brief Get Channel block for chname (and allocate a new channel
363 * block, if it didn't exist before)
364 * \param chname channel name
365 * \return channel block
366 */
367 struct Channel *
368 make_channel(const char *chname)
369 {
370 struct Channel *chptr = NULL;
371
372 assert(!EmptyString(chname));
373
374 chptr = BlockHeapAlloc(channel_heap);
375
376 /* doesn't hurt to set it here */
377 chptr->channelts = CurrentTime;
378 chptr->last_join_time = CurrentTime;
379
380 strlcpy(chptr->chname, chname, sizeof(chptr->chname));
381 dlinkAdd(chptr, &chptr->node, &global_channel_list);
382
383 hash_add_channel(chptr);
384
385 return chptr;
386 }
387
388 /*! \brief walk through this channel, and destroy it.
389 * \param chptr channel pointer
390 */
391 void
392 destroy_channel(struct Channel *chptr)
393 {
394 dlink_node *ptr = NULL, *ptr_next = NULL;
395
396 DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->invites.head)
397 del_invite(chptr, ptr->data);
398
399 /* free ban/exception/invex lists */
400 free_channel_list(&chptr->banlist);
401 free_channel_list(&chptr->exceptlist);
402 free_channel_list(&chptr->invexlist);
403
404 dlinkDelete(&chptr->node, &global_channel_list);
405 hash_del_channel(chptr);
406
407 BlockHeapFree(channel_heap, chptr);
408 }
409
410 /*!
411 * \param chptr pointer to channel
412 * \return string pointer "=" if public, "@" if secret else "*"
413 */
414 static const char *
415 channel_pub_or_secret(const struct Channel *chptr)
416 {
417 if (SecretChannel(chptr))
418 return "@";
419 if (PrivateChannel(chptr))
420 return "*";
421 return "=";
422 }
423
424 /*! \brief lists all names on given channel
425 * \param source_p pointer to client struct requesting names
426 * \param chptr pointer to channel block
427 * \param show_eon show ENDOFNAMES numeric or not
428 * (don't want it with /names with no params)
429 */
430 void
431 channel_member_names(struct Client *source_p, struct Channel *chptr,
432 int show_eon)
433 {
434 struct Client *target_p = NULL;
435 struct Membership *ms = NULL;
436 dlink_node *ptr = NULL;
437 char lbuf[IRCD_BUFSIZE + 1];
438 char *t = NULL, *start = NULL;
439 int tlen = 0;
440 int is_member = IsMember(source_p, chptr);
441 int multi_prefix = HasCap(source_p, CAP_MULTI_PREFIX) != 0;
442
443 if (PubChannel(chptr) || is_member)
444 {
445 t = lbuf + ircsprintf(lbuf, form_str(RPL_NAMREPLY),
446 me.name, source_p->name,
447 channel_pub_or_secret(chptr),
448 chptr->chname);
449 start = t;
450
451 DLINK_FOREACH(ptr, chptr->members.head)
452 {
453 ms = ptr->data;
454 target_p = ms->client_p;
455
456 if (HasUMode(target_p, UMODE_INVISIBLE) && !is_member)
457 continue;
458
459 tlen = strlen(target_p->name) + 1; /* nick + space */
460
461 if (!multi_prefix)
462 {
463 if (ms->flags & (CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE))
464 ++tlen;
465 }
466 else
467 {
468 if (ms->flags & CHFL_CHANOP)
469 ++tlen;
470 if (ms->flags & CHFL_HALFOP)
471 ++tlen;
472 if (ms->flags & CHFL_VOICE)
473 ++tlen;
474 }
475
476 if (t + tlen - lbuf > IRCD_BUFSIZE - 2)
477 {
478 *(t - 1) = '\0';
479 sendto_one(source_p, "%s", lbuf);
480 t = start;
481 }
482
483 t += ircsprintf(t, "%s%s ", get_member_status(ms, multi_prefix),
484 target_p->name);
485 }
486
487 if (tlen != 0)
488 {
489 *(t - 1) = '\0';
490 sendto_one(source_p, "%s", lbuf);
491 }
492 }
493
494 if (show_eon)
495 sendto_one(source_p, form_str(RPL_ENDOFNAMES),
496 me.name, source_p->name, chptr->chname);
497 }
498
499 /*! \brief adds client to invite list
500 * \param chptr pointer to channel block
501 * \param who pointer to client to add invite to
502 */
503 void
504 add_invite(struct Channel *chptr, struct Client *who)
505 {
506 del_invite(chptr, who);
507
508 /*
509 * delete last link in chain if the list is max length
510 */
511 if (dlink_list_length(&who->localClient->invited) >=
512 ConfigChannel.max_chans_per_user)
513 del_invite(who->localClient->invited.tail->data, who);
514
515 /* add client to channel invite list */
516 dlinkAdd(who, make_dlink_node(), &chptr->invites);
517
518 /* add channel to the end of the client invite list */
519 dlinkAdd(chptr, make_dlink_node(), &who->localClient->invited);
520 }
521
522 /*! \brief Delete Invite block from channel invite list
523 * and client invite list
524 * \param chptr pointer to Channel struct
525 * \param who pointer to client to remove invites from
526 */
527 void
528 del_invite(struct Channel *chptr, struct Client *who)
529 {
530 dlink_node *ptr = NULL;
531
532 if ((ptr = dlinkFindDelete(&who->localClient->invited, chptr)))
533 free_dlink_node(ptr);
534
535 if ((ptr = dlinkFindDelete(&chptr->invites, who)))
536 free_dlink_node(ptr);
537 }
538
539 /* get_member_status()
540 *
541 * inputs - pointer to struct Membership
542 * - YES if we can combine different flags
543 * output - string either @, +, % or "" depending on whether
544 * chanop, voiced or user
545 * side effects -
546 *
547 * NOTE: Returned string is usually a static buffer
548 * (like in get_client_name)
549 */
550 const char *
551 get_member_status(const struct Membership *ms, int combine)
552 {
553 static char buffer[4];
554 char *p = NULL;
555
556 if (ms == NULL)
557 return "";
558 p = buffer;
559
560 if (ms->flags & CHFL_CHANOP)
561 {
562 if (!combine)
563 return "@";
564 *p++ = '@';
565 }
566
567 #ifdef HALFOPS
568 if (ms->flags & CHFL_HALFOP)
569 {
570 if (!combine)
571 return "%";
572 *p++ = '%';
573 }
574 #endif
575
576 if (ms->flags & CHFL_VOICE)
577 *p++ = '+';
578 *p = '\0';
579
580 return buffer;
581 }
582
583 /*!
584 * \param who pointer to Client to check
585 * \param list pointer to ban list to search
586 * \return 1 if ban found for given n!u\@h mask, 0 otherwise
587 *
588 */
589 static int
590 find_bmask(const struct Client *who, const dlink_list *const list)
591 {
592 const dlink_node *ptr = NULL;
593
594 DLINK_FOREACH(ptr, list->head)
595 {
596 const struct Ban *bp = ptr->data;
597
598 if (match(bp->name, who->name) && match(bp->username, who->username))
599 {
600 switch (bp->type)
601 {
602 case HM_HOST:
603 if (match(bp->host, who->host) || match(bp->host, who->sockhost))
604 return 1;
605 break;
606 case HM_IPV4:
607 if (who->localClient->aftype == AF_INET)
608 if (match_ipv4(&who->localClient->ip, &bp->addr, bp->bits))
609 return 1;
610 break;
611 #ifdef IPV6
612 case HM_IPV6:
613 if (who->localClient->aftype == AF_INET6)
614 if (match_ipv6(&who->localClient->ip, &bp->addr, bp->bits))
615 return 1;
616 break;
617 #endif
618 default:
619 assert(0);
620 }
621 }
622 }
623
624 return 0;
625 }
626
627 /*!
628 * \param chptr pointer to channel block
629 * \param who pointer to client to check access fo
630 * \return 0 if not banned, 1 otherwise
631 */
632 int
633 is_banned(const struct Channel *chptr, const struct Client *who)
634 {
635 if (find_bmask(who, &chptr->banlist))
636 if (!find_bmask(who, &chptr->exceptlist))
637 return 1;
638
639 return 0;
640 }
641
642 /*!
643 * \param source_p pointer to client attempting to join
644 * \param chptr pointer to channel
645 * \param key key sent by client attempting to join if present
646 * \return ERR_BANNEDFROMCHAN, ERR_INVITEONLYCHAN, ERR_CHANNELISFULL
647 * or 0 if allowed to join.
648 */
649 int
650 can_join(struct Client *source_p, struct Channel *chptr, const char *key)
651 {
652 if (is_banned(chptr, source_p))
653 return ERR_BANNEDFROMCHAN;
654
655 #ifdef HAVE_LIBCRYPTO
656 if ((chptr->mode.mode & MODE_SSLONLY) && !source_p->localClient->fd.ssl)
657 return ERR_SSLONLYCHAN;
658 #endif
659
660 if ((chptr->mode.mode & MODE_REGONLY) && !HasUMode(source_p, UMODE_REGISTERED))
661 return ERR_NEEDREGGEDNICK;
662
663 if ((chptr->mode.mode & MODE_OPERONLY) && !HasUMode(source_p, UMODE_OPER))
664 return ERR_OPERONLYCHAN;
665
666 if (chptr->mode.mode & MODE_INVITEONLY)
667 if (!dlinkFind(&source_p->localClient->invited, chptr))
668 if (!find_bmask(source_p, &chptr->invexlist))
669 return ERR_INVITEONLYCHAN;
670
671 if (chptr->mode.key[0] && (!key || strcmp(chptr->mode.key, key)))
672 return ERR_BADCHANNELKEY;
673
674 if (chptr->mode.limit && dlink_list_length(&chptr->members) >=
675 chptr->mode.limit)
676 return ERR_CHANNELISFULL;
677
678 return 0;
679 }
680
681 int
682 has_member_flags(struct Membership *ms, unsigned int flags)
683 {
684 if (ms != NULL)
685 return ms->flags & flags;
686 return 0;
687 }
688
689 struct Membership *
690 find_channel_link(struct Client *client_p, struct Channel *chptr)
691 {
692 dlink_node *ptr = NULL;
693
694 if (!IsClient(client_p))
695 return NULL;
696
697 DLINK_FOREACH(ptr, client_p->channel.head)
698 if (((struct Membership *)ptr->data)->chptr == chptr)
699 return ptr->data;
700
701 return NULL;
702 }
703
704 /*!
705 * \param chptr pointer to Channel struct
706 * \param source_p pointer to Client struct
707 * \param ms pointer to Membership struct (can be NULL)
708 * \return CAN_SEND_OPV if op or voiced on channel\n
709 * CAN_SEND_NONOP if can send to channel but is not an op\n
710 * ERR_CANNOTSENDTOCHAN or ERR_NEEDREGGEDNICK if they cannot send to channel\n
711 */
712 int
713 can_send(struct Channel *chptr, struct Client *source_p, struct Membership *ms)
714 {
715 if (IsServer(source_p) || HasFlag(source_p, FLAGS_SERVICE))
716 return CAN_SEND_OPV;
717
718 if (MyClient(source_p) && !IsExemptResv(source_p))
719 if (!(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.oper_pass_resv))
720 if (!hash_find_resv(chptr->chname) == ConfigChannel.restrict_channels)
721 return ERR_CANNOTSENDTOCHAN;
722
723 if (ms != NULL || (ms = find_channel_link(source_p, chptr)))
724 {
725 if (ms->flags & (CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE))
726 return CAN_SEND_OPV;
727
728 /* cache can send if quiet_on_ban and banned */
729 if (ConfigChannel.quiet_on_ban && MyClient(source_p))
730 {
731 if (ms->flags & CHFL_BAN_SILENCED)
732 return ERR_CANNOTSENDTOCHAN;
733
734 if (!(ms->flags & CHFL_BAN_CHECKED))
735 {
736 if (is_banned(chptr, source_p))
737 {
738 ms->flags |= (CHFL_BAN_CHECKED|CHFL_BAN_SILENCED);
739 return ERR_CANNOTSENDTOCHAN;
740 }
741
742 ms->flags |= CHFL_BAN_CHECKED;
743 }
744 }
745 }
746 else if (chptr->mode.mode & MODE_NOPRIVMSGS)
747 return ERR_CANNOTSENDTOCHAN;
748
749 if (chptr->mode.mode & MODE_MODERATED)
750 return ERR_CANNOTSENDTOCHAN;
751
752 return CAN_SEND_NONOP;
753 }
754
755 /*! \brief Updates the client's oper_warn_count_down, warns the
756 * IRC operators if necessary, and updates
757 * join_leave_countdown as needed.
758 * \param source_p pointer to struct Client to check
759 * \param name channel name or NULL if this is a part.
760 */
761 void
762 check_spambot_warning(struct Client *source_p, const char *name)
763 {
764 int t_delta = 0;
765 int decrement_count = 0;
766
767 if ((GlobalSetOptions.spam_num &&
768 (source_p->localClient->join_leave_count >=
769 GlobalSetOptions.spam_num)))
770 {
771 if (source_p->localClient->oper_warn_count_down > 0)
772 source_p->localClient->oper_warn_count_down--;
773 else
774 source_p->localClient->oper_warn_count_down = 0;
775
776 if (source_p->localClient->oper_warn_count_down == 0)
777 {
778 /* Its already known as a possible spambot */
779 if (name != NULL)
780 sendto_realops_flags(UMODE_BOTS, L_ALL,
781 "User %s (%s@%s) trying to join %s is a possible spambot",
782 source_p->name, source_p->username,
783 source_p->host, name);
784 else
785 sendto_realops_flags(UMODE_BOTS, L_ALL,
786 "User %s (%s@%s) is a possible spambot",
787 source_p->name, source_p->username,
788 source_p->host);
789 source_p->localClient->oper_warn_count_down = OPER_SPAM_COUNTDOWN;
790 }
791 }
792 else
793 {
794 if ((t_delta = (CurrentTime - source_p->localClient->last_leave_time)) >
795 JOIN_LEAVE_COUNT_EXPIRE_TIME)
796 {
797 decrement_count = (t_delta / JOIN_LEAVE_COUNT_EXPIRE_TIME);
798 if (decrement_count > source_p->localClient->join_leave_count)
799 source_p->localClient->join_leave_count = 0;
800 else
801 source_p->localClient->join_leave_count -= decrement_count;
802 }
803 else
804 {
805 if ((CurrentTime - (source_p->localClient->last_join_time)) <
806 GlobalSetOptions.spam_time)
807 {
808 /* oh, its a possible spambot */
809 source_p->localClient->join_leave_count++;
810 }
811 }
812
813 if (name != NULL)
814 source_p->localClient->last_join_time = CurrentTime;
815 else
816 source_p->localClient->last_leave_time = CurrentTime;
817 }
818 }
819
820 /*! \brief compares usercount and servercount against their split
821 * values and adjusts splitmode accordingly
822 * \param unused Unused address pointer
823 */
824 void
825 check_splitmode(void *unused)
826 {
827 if (splitchecking && (ConfigChannel.no_join_on_split ||
828 ConfigChannel.no_create_on_split))
829 {
830 const unsigned int server = dlink_list_length(&global_serv_list);
831
832 if (!splitmode && ((server < split_servers) || (Count.total < split_users)))
833 {
834 splitmode = 1;
835
836 sendto_realops_flags(UMODE_ALL,L_ALL,
837 "Network split, activating splitmode");
838 eventAddIsh("check_splitmode", check_splitmode, NULL, 10);
839 }
840 else if (splitmode && (server > split_servers) && (Count.total > split_users))
841 {
842 splitmode = 0;
843
844 sendto_realops_flags(UMODE_ALL, L_ALL,
845 "Network rejoined, deactivating splitmode");
846 eventDelete(check_splitmode, NULL);
847 }
848 }
849 }
850
851 /*! \brief Sets the channel topic for chptr
852 * \param chptr Pointer to struct Channel
853 * \param topic The topic string
854 * \param topic_info n!u\@h formatted string of the topic setter
855 * \param topicts timestamp on the topic
856 */
857 void
858 set_channel_topic(struct Channel *chptr, const char *topic,
859 const char *topic_info, time_t topicts)
860 {
861 strlcpy(chptr->topic, topic, sizeof(chptr->topic));
862 strlcpy(chptr->topic_info, topic_info, sizeof(chptr->topic_info));
863 chptr->topic_time = topicts;
864 }

Properties

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