2 * IRC - Internet Relay Chat, ircd/channel.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Co Center
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 1, or (at your option)
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.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include "destruct_event.h"
29 #include "ircd_alloc.h"
30 #include "ircd_chattr.h"
31 #include "ircd_defs.h"
32 #include "ircd_features.h"
34 #include "ircd_policy.h"
35 #include "ircd_reply.h"
36 #include "ircd_snprintf.h"
37 #include "ircd_string.h"
44 #include "querycmds.h"
61 struct Channel* GlobalChannelList = 0;
63 static unsigned int membershipAllocCount;
64 static struct Membership* membershipFreeList;
66 void del_invite(struct Client *, struct Channel *);
68 const char* const PartFmt1 = ":%s " MSG_PART " %s";
69 const char* const PartFmt2 = ":%s " MSG_PART " %s :%s";
70 const char* const PartFmt1serv = "%s%s " TOK_PART " %s";
71 const char* const PartFmt2serv = "%s%s " TOK_PART " %s :%s";
74 static struct SLink* next_ban;
75 static struct SLink* prev_ban;
76 static struct SLink* removed_bans_list;
79 * Use a global variable to remember if an oper set a mode on a local channel. Ugly,
80 * but the only way to do it without changing set_mode intensively.
82 int LocalChanOperMode = 0;
86 * return the length (>=0) of a chain of links.
88 static int list_length(struct SLink *lp)
92 for (; lp; lp = lp->next)
98 struct Membership* find_member_link(struct Channel* chptr, const struct Client* cptr)
100 struct Membership *m;
104 /* Servers don't have member links */
105 if (IsServer(cptr)||IsMe(cptr))
108 /* +k users are typically on a LOT of channels. So we iterate over who
109 * is in the channel. X/W are +k and are in about 5800 channels each.
110 * however there are typically no more than 1000 people in a channel
113 if (IsChannelService(cptr)) {
116 assert(m->channel == chptr);
122 /* Users on the other hand aren't allowed on more than 15 channels. 50%
123 * of users that are on channels are on 2 or less, 95% are on 7 or less,
124 * and 99% are on 10 or less.
127 m = (cli_user(cptr))->channel;
129 assert(m->user == cptr);
130 if (m->channel == chptr)
139 * find_chasing - Find the client structure for a nick name (user)
140 * using history mechanism if necessary. If the client is not found, an error
141 * message (NO SUCH NICK) is generated. If the client was found
142 * through the history, chasing will be 1 and otherwise 0.
144 struct Client* find_chasing(struct Client* sptr, const char* user, int* chasing)
146 struct Client* who = FindClient(user);
153 if (!(who = get_history(user, feature_int(FEAT_KILLCHASETIMELIMIT)))) {
154 send_reply(sptr, ERR_NOSUCHNICK, user);
163 * Create a string of form "foo!bar@fubar" given foo, bar and fubar
164 * as the parameters. If NULL, they become "*".
166 #define NUH_BUFSIZE (NICKLEN + USERLEN + HOSTLEN + 3)
167 static char *make_nick_user_host(char *namebuf, const char *nick,
168 const char *name, const char *host)
170 ircd_snprintf(0, namebuf, NUH_BUFSIZE, "%s!%s@%s", nick, name, host);
175 * Create a string of form "foo!bar@123.456.789.123" given foo, bar and the
176 * IP-number as the parameters. If NULL, they become "*".
178 #define NUI_BUFSIZE (NICKLEN + USERLEN + 16 + 3)
179 static char *make_nick_user_ip(char *ipbuf, char *nick, char *name,
182 ircd_snprintf(0, ipbuf, NUI_BUFSIZE, "%s!%s@%s", nick, name,
183 ircd_ntoa((const char*) &ip));
188 * Subtract one user from channel i (and free channel
189 * block, if channel became empty).
190 * Returns: true (1) if channel still has members.
191 * false (0) if the channel is now empty.
193 int sub1_from_channel(struct Channel* chptr)
195 if (chptr->users > 1) /* Can be 0, called for an empty channel too */
197 assert(0 != chptr->members);
205 * Also channels without Apass set need to be kept alive,
206 * otherwise Bad Guys(tm) would be able to takeover
207 * existing channels too easily, and then set an Apass!
208 * However, if a channel without Apass becomes empty
209 * then we try to be kind to them and remove possible
212 chptr->mode.mode &= ~MODE_INVITEONLY;
213 chptr->mode.limit = 0;
215 * We do NOT reset a possible key or bans because when
216 * the 'channel owners' can't get in because of a key
217 * or ban then apparently there was a fight/takeover
218 * on the channel and we want them to contact IRC opers
219 * who then will educate them on the use of Apass/upass.
222 if (TStime() - chptr->creationtime < 172800) /* Channel younger than 48 hours? */
223 schedule_destruct_event_1m(chptr); /* Get rid of it in approximately 4-5 minutes */
225 schedule_destruct_event_48h(chptr); /* Get rid of it in approximately 48 hours */
230 int destruct_channel(struct Channel* chptr)
235 assert(0 == chptr->members);
237 /* Channel became (or was) empty: Remove channel */
238 if (is_listed(chptr))
241 for (i = 0; i <= HighestFd; i++)
243 struct Client *acptr = 0;
244 if ((acptr = LocalClientArray[i]) && cli_listing(acptr) &&
245 (cli_listing(acptr))->chptr == chptr)
247 list_next_channels(acptr, 1);
248 break; /* Only one client can list a channel */
253 * Now, find all invite links from channel structure
255 while ((tmp = chptr->invites))
256 del_invite(tmp->value.cptr, chptr);
258 tmp = chptr->banlist;
263 MyFree(obtmp->value.ban.banstr);
264 MyFree(obtmp->value.ban.who);
268 chptr->prev->next = chptr->next;
270 GlobalChannelList = chptr->next;
272 chptr->next->prev = chptr->prev;
274 --UserStats.channels;
276 * make sure that channel actually got removed from hash table
278 assert(chptr->hnext == chptr);
286 * `cptr' must be the client adding the ban.
288 * If `change' is true then add `banid' to channel `chptr'.
289 * Returns 0 if the ban was added.
290 * Returns -2 if the ban already existed and was marked CHFL_BURST_BAN_WIPEOUT.
291 * Return -1 otherwise.
293 * Those bans that overlapped with `banid' are flagged with CHFL_BAN_OVERLAPPED
294 * when `change' is false, otherwise they will be removed from the banlist.
295 * Subsequently calls to next_overlapped_ban() or next_removed_overlapped_ban()
296 * respectively will return these bans until NULL is returned.
298 * If `firsttime' is true, the ban list as returned by next_overlapped_ban()
299 * is reset (unless a non-zero value is returned, in which case the
300 * CHFL_BAN_OVERLAPPED flag might not have been reset!).
304 int add_banid(struct Client *cptr, struct Channel *chptr, char *banid,
305 int change, int firsttime)
310 int removed_bans = 0;
311 int len = strlen(banid);
316 assert(0 == prev_ban);
317 assert(0 == removed_bans_list);
321 for (banp = &chptr->banlist; *banp;)
323 len += strlen((*banp)->value.ban.banstr);
325 if (((*banp)->flags & CHFL_BURST_BAN_WIPEOUT))
327 if (!strcmp((*banp)->value.ban.banstr, banid))
329 (*banp)->flags &= ~CHFL_BURST_BAN_WIPEOUT;
333 else if (!mmatch((*banp)->value.ban.banstr, banid))
335 if (!mmatch(banid, (*banp)->value.ban.banstr))
337 struct SLink *tmp = *banp;
343 len -= strlen(tmp->value.ban.banstr);
346 /* These will be sent to the user later as -b */
347 tmp->next = removed_bans_list;
348 removed_bans_list = tmp;
351 else if (!(tmp->flags & CHFL_BURST_BAN_WIPEOUT))
353 tmp->flags |= CHFL_BAN_OVERLAPPED;
364 (*banp)->flags &= ~CHFL_BAN_OVERLAPPED;
365 banp = &(*banp)->next;
368 if (MyUser(cptr) && !removed_bans &&
369 (len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXBANS)) ||
370 (cnt >= feature_int(FEAT_MAXBANS))))
372 send_reply(cptr, ERR_BANLISTFULL, chptr->chname, banid);
378 struct Membership* member;
380 ban->next = chptr->banlist;
382 ban->value.ban.banstr = (char*) MyMalloc(strlen(banid) + 1);
383 assert(0 != ban->value.ban.banstr);
384 strcpy(ban->value.ban.banstr, banid);
386 #ifdef HEAD_IN_SAND_BANWHO
388 DupString(ban->value.ban.who, cli_name(&me));
391 DupString(ban->value.ban.who, cli_name(cptr));
392 assert(0 != ban->value.ban.who);
394 ban->value.ban.when = TStime();
395 ban->flags = CHFL_BAN; /* This bit is never used I think... */
396 if ((ip_start = strrchr(banid, '@')) && check_if_ipmask(ip_start + 1))
397 ban->flags |= CHFL_BAN_IPMASK;
398 chptr->banlist = ban;
401 * Erase ban-valid-bit
403 for (member = chptr->members; member; member = member->next_member)
404 ClearBanValid(member); /* `ban' == channel member ! */
409 struct SLink *next_removed_overlapped_ban(void)
411 struct SLink *tmp = removed_bans_list;
414 if (prev_ban->value.ban.banstr) /* Can be set to NULL in set_mode() */
415 MyFree(prev_ban->value.ban.banstr);
416 MyFree(prev_ban->value.ban.who);
421 removed_bans_list = removed_bans_list->next;
427 * find_channel_member - returns Membership * if a person is joined and not a zombie
429 struct Membership* find_channel_member(struct Client* cptr, struct Channel* chptr)
431 struct Membership* member;
434 member = find_member_link(chptr, cptr);
435 return (member && !IsZombie(member)) ? member : 0;
439 * is_banned - a non-zero value if banned else 0.
441 static int is_banned(struct Client *cptr, struct Channel *chptr,
442 struct Membership* member)
445 char nu_host[NUH_BUFSIZE];
446 char nu_realhost[NUH_BUFSIZE];
447 char nu_ip[NUI_BUFSIZE];
455 if (member && IsBanValid(member))
456 return IsBanned(member);
458 s = make_nick_user_host(nu_host, cli_name(cptr), (cli_user(cptr))->username,
459 (cli_user(cptr))->host);
460 if (HasHiddenHost(cptr))
461 sr = make_nick_user_host(nu_realhost, cli_name(cptr),
462 (cli_user(cptr))->username,
463 cli_user(cptr)->realhost);
465 for (tmp = chptr->banlist; tmp; tmp = tmp->next) {
466 if ((tmp->flags & CHFL_BAN_IPMASK)) {
468 ip_s = make_nick_user_ip(nu_ip, cli_name(cptr),
469 (cli_user(cptr))->username, cli_ip(cptr));
470 if (match(tmp->value.ban.banstr, ip_s) == 0)
473 else if (match(tmp->value.ban.banstr, s) == 0)
475 else if (sr && match(tmp->value.ban.banstr, sr) == 0)
491 return (tmp != NULL);
495 * adds a user to a channel by adding another link to the channels member
498 void add_user_to_channel(struct Channel* chptr, struct Client* who,
499 unsigned int flags, int oplevel)
506 struct Membership* member = membershipFreeList;
508 membershipFreeList = member->next_member;
510 member = (struct Membership*) MyMalloc(sizeof(struct Membership));
511 ++membershipAllocCount;
516 member->channel = chptr;
517 member->status = flags;
518 member->oplevel = oplevel;
520 member->next_member = chptr->members;
521 if (member->next_member)
522 member->next_member->prev_member = member;
523 member->prev_member = 0;
524 chptr->members = member;
526 member->next_channel = (cli_user(who))->channel;
527 if (member->next_channel)
528 member->next_channel->prev_channel = member;
529 member->prev_channel = 0;
530 (cli_user(who))->channel = member;
532 if (chptr->destruct_event)
533 remove_destruct_event(chptr);
535 ++((cli_user(who))->joined);
539 static int remove_member_from_channel(struct Membership* member)
541 struct Channel* chptr;
543 chptr = member->channel;
545 * unlink channel member list
547 if (member->next_member)
548 member->next_member->prev_member = member->prev_member;
549 if (member->prev_member)
550 member->prev_member->next_member = member->next_member;
552 member->channel->members = member->next_member;
555 * unlink client channel list
557 if (member->next_channel)
558 member->next_channel->prev_channel = member->prev_channel;
559 if (member->prev_channel)
560 member->prev_channel->next_channel = member->next_channel;
562 (cli_user(member->user))->channel = member->next_channel;
564 --(cli_user(member->user))->joined;
566 member->next_member = membershipFreeList;
567 membershipFreeList = member;
569 return sub1_from_channel(chptr);
572 static int channel_all_zombies(struct Channel* chptr)
574 struct Membership* member;
576 for (member = chptr->members; member; member = member->next_member) {
577 if (!IsZombie(member))
584 void remove_user_from_channel(struct Client* cptr, struct Channel* chptr)
587 struct Membership* member;
590 if ((member = find_member_link(chptr, cptr))) {
591 if (remove_member_from_channel(member)) {
592 if (channel_all_zombies(chptr)) {
594 * XXX - this looks dangerous but isn't if we got the referential
595 * integrity right for channels
597 while (remove_member_from_channel(chptr->members))
604 void remove_user_from_all_channels(struct Client* cptr)
606 struct Membership* chan;
608 assert(0 != cli_user(cptr));
610 while ((chan = (cli_user(cptr))->channel))
611 remove_user_from_channel(cptr, chan->channel);
614 int is_chan_op(struct Client *cptr, struct Channel *chptr)
616 struct Membership* member;
618 if ((member = find_member_link(chptr, cptr)))
619 return (!IsZombie(member) && IsChanOp(member));
624 int is_level0_op(struct Client *cptr, struct Channel *chptr)
629 int is_zombie(struct Client *cptr, struct Channel *chptr)
631 struct Membership* member;
635 if ((member = find_member_link(chptr, cptr)))
636 return IsZombie(member);
640 int has_voice(struct Client* cptr, struct Channel* chptr)
642 struct Membership* member;
645 if ((member = find_member_link(chptr, cptr)))
646 return (!IsZombie(member) && HasVoice(member));
651 int member_can_send_to_channel(struct Membership* member)
655 if (IsVoicedOrOpped(member))
658 * If it's moderated, and you aren't a priviledged user, you can't
661 if (member->channel->mode.mode & MODE_MODERATED)
664 * If you're banned then you can't speak either.
665 * but because of the amount of CPU time that is_banned chews
666 * we only check it for our clients.
668 if (MyUser(member->user) && is_banned(member->user, member->channel, member))
673 int client_can_send_to_channel(struct Client *cptr, struct Channel *chptr)
675 struct Membership *member;
678 * Servers can always speak on channels.
683 member = find_channel_member(cptr, chptr);
686 * You can't speak if your off channel, if the channel is modeless, or
687 * +n (no external messages) or +m (moderated).
690 if ((chptr->mode.mode & (MODE_NOPRIVMSGS|MODE_MODERATED)) ||
691 IsModelessChannel(chptr->chname) ||
692 ((chptr->mode.mode & MODE_REGONLY) && !IsAccount(cptr)))
695 return !is_banned(cptr, chptr, NULL);
697 return member_can_send_to_channel(member);
701 * find_no_nickchange_channel
702 * if a member and not opped or voiced and banned
703 * return the name of the first channel banned on
705 const char* find_no_nickchange_channel(struct Client* cptr)
708 struct Membership* member;
709 for (member = (cli_user(cptr))->channel; member;
710 member = member->next_channel) {
711 if (!IsVoicedOrOpped(member) && is_banned(cptr, member->channel, member))
712 return member->channel->chname;
720 * write the "simple" list of channel modes for channel chptr onto buffer mbuf
721 * with the parameters in pbuf.
723 void channel_modes(struct Client *cptr, char *mbuf, char *pbuf, int buflen,
724 struct Channel *chptr)
726 int previous_parameter = 0;
733 if (chptr->mode.mode & MODE_SECRET)
735 else if (chptr->mode.mode & MODE_PRIVATE)
737 if (chptr->mode.mode & MODE_MODERATED)
739 if (chptr->mode.mode & MODE_TOPICLIMIT)
741 if (chptr->mode.mode & MODE_INVITEONLY)
743 if (chptr->mode.mode & MODE_NOPRIVMSGS)
745 if (chptr->mode.mode & MODE_REGONLY)
747 if (chptr->mode.limit) {
749 ircd_snprintf(0, pbuf, buflen, "%u", chptr->mode.limit);
750 previous_parameter = 1;
753 if (*chptr->mode.key) {
755 if (previous_parameter)
757 if (is_chan_op(cptr, chptr) || IsServer(cptr)) {
758 strcat(pbuf, chptr->mode.key);
761 previous_parameter = 1;
763 if (*chptr->mode.apass) {
765 if (previous_parameter)
767 if (IsServer(cptr)) {
768 strcat(pbuf, chptr->mode.apass);
771 previous_parameter = 1;
773 if (*chptr->mode.upass) {
775 if (previous_parameter)
777 if (is_level0_op(cptr, chptr) || IsServer(cptr)) {
778 strcat(pbuf, chptr->mode.upass);
785 int compare_member_oplevel(const void *mp1, const void *mp2)
787 struct Membership const* member1 = *(struct Membership const**)mp1;
788 struct Membership const* member2 = *(struct Membership const**)mp2;
789 if (member1->oplevel == member2->oplevel)
791 return (member1->oplevel < member2->oplevel) ? -1 : 1;
795 * send "cptr" a full list of the modes for channel chptr.
797 void send_channel_modes(struct Client *cptr, struct Channel *chptr)
799 /* The order in which modes are generated is now mandatory */
800 static unsigned int current_flags[4] =
801 { 0, CHFL_VOICE, CHFL_CHANOP, CHFL_CHANOP | CHFL_VOICE };
807 struct Membership* member;
809 char modebuf[MODEBUFLEN];
810 char parabuf[MODEBUFLEN];
812 int number_of_ops = 0;
813 int opped_members_index = 0;
814 struct Membership** opped_members = NULL;
815 int last_oplevel = 0;
820 if (IsLocalChannel(chptr->chname))
823 member = chptr->members;
824 lp2 = chptr->banlist;
826 *modebuf = *parabuf = '\0';
827 channel_modes(cptr, modebuf, parabuf, sizeof(parabuf), chptr);
829 for (first = 1; full; first = 0) /* Loop for multiple messages */
831 full = 0; /* Assume by default we get it
832 all in one message */
834 /* (Continued) prefix: "<Y> B <channel> <TS>" */
835 /* is there any better way we can do this? */
836 mb = msgq_make(&me, "%C " TOK_BURST " %H %Tu", &me, chptr,
837 chptr->creationtime);
839 if (first && modebuf[1]) /* Add simple modes (Aiklmnpstu)
842 /* prefix: "<Y> B <channel> <TS>[ <modes>[ <params>]]" */
843 msgq_append(&me, mb, " %s", modebuf);
846 msgq_append(&me, mb, " %s", parabuf);
850 * Attach nicks, comma seperated " nick[:modes],nick[:modes],..."
852 * First find all opless members.
853 * Run 2 times over all members, to group the members with
854 * and without voice together.
855 * Then run 2 times over all opped members (which are ordered
856 * by op-level) to also group voice and non-voice together.
858 for (first = 1; flag_cnt < 4; new_mode = 1, ++flag_cnt)
862 if (flag_cnt < 2 && IsChanOp(member))
865 * The first loop (to find all non-voice/op), we count the ops.
866 * The second loop (to find all voiced non-ops), store the ops
867 * in a dynamic array.
872 opped_members[opped_members_index++] = member;
874 /* Only handle the members with the flags that we are interested in. */
875 if ((member->status & CHFL_VOICED_OR_OPPED) == current_flags[flag_cnt])
877 if (msgq_bufleft(mb) < NUMNICKLEN + 3 + MAXOPLEVELDIGITS)
878 /* The 3 + MAXOPLEVELDIGITS is a possible ",:v999". */
880 full = 1; /* Make sure we continue after
882 /* Ensure the new BURST line contains the current
883 * ":mode", except when there is no mode yet. */
884 new_mode = (flag_cnt > 0) ? 1 : 0;
885 break; /* Do not add this member to this message */
887 msgq_append(&me, mb, "%c%C", first ? ' ' : ',', member->user);
888 first = 0; /* From now on, use commas to add new nicks */
891 * Do we have a nick with a new mode ?
892 * Or are we starting a new BURST line?
897 * This means we are at the _first_ member that has only
898 * voice, or the first member that has only ops, or the
899 * first member that has voice and ops (so we get here
900 * at most three times, plus once for every start of
901 * a continued BURST line where only these modes is current.
902 * In the two cases where the current mode includes ops,
903 * we need to add the _absolute_ value of the oplevel to the mode.
905 char tbuf[3 + MAXOPLEVELDIGITS] = ":";
908 if (HasVoice(member)) /* flag_cnt == 1 or 3 */
910 if (IsChanOp(member)) /* flag_cnt == 2 or 3 */
912 /* append the absolute value of the oplevel */
913 loc += ircd_snprintf(0, tbuf + loc, sizeof(tbuf) - loc, "%u", member->oplevel);
914 last_oplevel = member->oplevel;
917 msgq_append(&me, mb, tbuf);
920 else if (flag_cnt > 1 && last_oplevel != member->oplevel)
923 * This can't be the first member of a (continued) BURST
924 * message because then either flag_cnt == 0 or new_mode == 1
925 * Now we need to append the incremental value of the oplevel.
927 char tbuf[2 + MAXOPLEVELDIGITS];
928 ircd_snprintf(0, tbuf, sizeof(tbuf), ":%u", member->oplevel - last_oplevel);
929 last_oplevel = member->oplevel;
930 msgq_append(&me, mb, tbuf);
933 /* Go to the next `member'. */
935 member = member->next_member;
937 member = opped_members[++opped_members_index];
942 /* Point `member' at the start of the list again. */
945 member = chptr->members;
946 /* Now, after one loop, we know the number of ops and can
947 * allocate the dynamic array with pointer to the ops. */
948 opped_members = (struct Membership**)
949 MyMalloc((number_of_ops + 1) * sizeof(struct Membership*));
950 opped_members[number_of_ops] = NULL; /* Needed for loop termination */
954 /* At the end of the second loop, sort the opped members with
955 * increasing op-level, so that we will output them in the
956 * correct order (and all op-level increments stay positive) */
958 qsort(opped_members, number_of_ops,
959 sizeof(struct Membership*), compare_member_oplevel);
960 /* The third and fourth loop run only over the opped members. */
961 member = opped_members[(opped_members_index = 0)];
964 } /* loop over 0,+v,+o,+ov */
968 /* Attach all bans, space seperated " :%ban ban ..." */
969 for (first = 2; lp2; lp2 = lp2->next)
971 len = strlen(lp2->value.ban.banstr);
972 if (msgq_bufleft(mb) < len + 1 + first)
973 /* The +1 stands for the added ' '.
974 * The +first stands for the added ":%".
980 msgq_append(&me, mb, " %s%s", first ? ":%" : "",
981 lp2->value.ban.banstr);
986 send_buffer(cptr, mb, 0); /* Send this message */
988 } /* Continue when there was something
989 that didn't fit (full==1) */
991 MyFree(opped_members);
997 * by Carlo Wood (Run), 05 Oct 1998.
1001 * When the nick is longer then NICKLEN, it is cut off (its an error of course).
1002 * When the user name or host name are too long (USERLEN and HOSTLEN
1003 * respectively) then they are cut off at the start with a '*'.
1005 * The following transformations are made:
1007 * 1) xxx -> nick!*@*
1008 * 2) xxx.xxx -> *!*@host
1009 * 3) xxx!yyy -> nick!user@*
1010 * 4) xxx@yyy -> *!user@host
1011 * 5) xxx!yyy@zzz -> nick!user@host
1013 char *pretty_mask(char *mask)
1015 static char star[2] = { '*', 0 };
1016 static char retmask[NUH_BUFSIZE];
1017 char *last_dot = NULL;
1020 /* Case 1: default */
1025 /* Do a _single_ pass through the characters of the mask: */
1026 for (ptr = mask; *ptr; ++ptr)
1030 /* Case 3 or 5: Found first '!' (without finding a '@' yet) */
1034 else if (*ptr == '@')
1036 /* Case 4: Found last '@' (without finding a '!' yet) */
1041 else if (*ptr == '.')
1043 /* Case 2: Found last '.' (without finding a '!' or '@' yet) */
1053 /* Case 4 or 5: Found last '@' */
1059 if (user == star && last_dot)
1069 char *nick_end = (user != star) ? user - 1 : ptr;
1070 if (nick_end - nick > NICKLEN)
1076 char *user_end = (host != star) ? host - 1 : ptr;
1077 if (user_end - user > USERLEN)
1079 user = user_end - USERLEN;
1084 if (host != star && ptr - host > HOSTLEN)
1086 host = ptr - HOSTLEN;
1089 return make_nick_user_host(retmask, nick, user, host);
1092 static void send_ban_list(struct Client* cptr, struct Channel* chptr)
1099 for (lp = chptr->banlist; lp; lp = lp->next)
1100 send_reply(cptr, RPL_BANLIST, chptr->chname, lp->value.ban.banstr,
1101 lp->value.ban.who, lp->value.ban.when);
1103 send_reply(cptr, RPL_ENDOFBANLIST, chptr->chname);
1106 /* We are now treating the <key> part of /join <channel list> <key> as a key
1107 * ring; that is, we try one key against the actual channel key, and if that
1108 * doesn't work, we try the next one, and so on. -Kev -Texaco
1109 * Returns: 0 on match, 1 otherwise
1110 * This version contributed by SeKs <intru@info.polymtl.ca>
1112 static int compall(char *key, char *keyring)
1117 p1 = key; /* point to the key... */
1118 while (*p1 && *p1 == *keyring)
1119 { /* step through the key and ring until they
1125 if (!*p1 && (!*keyring || *keyring == ','))
1126 /* ok, if we're at the end of the and also at the end of one of the keys
1127 in the keyring, we have a match */
1130 if (!*keyring) /* if we're at the end of the key ring, there
1131 weren't any matches, so we return 1 */
1134 /* Not at the end of the key ring, so step
1135 through to the next key in the ring: */
1136 while (*keyring && *(keyring++) != ',');
1138 goto top; /* and check it against the key */
1141 int can_join(struct Client *sptr, struct Channel *chptr, char *key)
1144 int overrideJoin = 0;
1147 * Now a banned user CAN join if invited -- Nemesi
1148 * Now a user CAN escape channel limit if invited -- bfriendly
1149 * Now a user CAN escape anything if invited -- Isomer
1152 for (lp = (cli_user(sptr))->invited; lp; lp = lp->next)
1153 if (lp->value.chptr == chptr)
1156 /* An oper can force a join on a local channel using "OVERRIDE" as the key.
1157 a HACK(4) notice will be sent if he would not have been supposed
1158 to join normally. */
1159 if (IsLocalChannel(chptr->chname) && HasPriv(sptr, PRIV_WALK_LCHAN) &&
1160 !BadPtr(key) && compall("OVERRIDE",key) == 0)
1161 overrideJoin = MAGIC_OPER_OVERRIDE;
1163 if (chptr->mode.mode & MODE_INVITEONLY)
1164 return overrideJoin + ERR_INVITEONLYCHAN;
1166 if (chptr->mode.limit && chptr->users >= chptr->mode.limit)
1167 return overrideJoin + ERR_CHANNELISFULL;
1169 if ((chptr->mode.mode & MODE_REGONLY) && !IsAccount(sptr))
1170 return overrideJoin + ERR_NEEDREGGEDNICK;
1172 if (is_banned(sptr, chptr, NULL))
1173 return overrideJoin + ERR_BANNEDFROMCHAN;
1176 * now using compall (above) to test against a whole key ring -Kev
1178 if (*chptr->mode.key && (EmptyString(key) || compall(chptr->mode.key, key)))
1179 return overrideJoin + ERR_BADCHANNELKEY;
1182 return ERR_DONTCHEAT;
1188 * Remove bells and commas from channel name
1190 void clean_channelname(char *cn)
1194 for (i = 0; cn[i]; i++) {
1195 if (i >= CHANNELLEN || !IsChannelChar(cn[i])) {
1199 if (IsChannelLower(cn[i])) {
1200 cn[i] = ToLower(cn[i]);
1206 if ((unsigned char)(cn[i]) == 0xd0)
1207 cn[i] = (char) 0xf0;
1214 * Get Channel block for i (and allocate a new channel
1215 * block, if it didn't exists before).
1217 struct Channel *get_channel(struct Client *cptr, char *chname, ChannelGetType flag)
1219 struct Channel *chptr;
1222 if (EmptyString(chname))
1225 len = strlen(chname);
1226 if (MyUser(cptr) && len > CHANNELLEN)
1229 *(chname + CHANNELLEN) = '\0';
1231 if ((chptr = FindChannel(chname)))
1233 if (flag == CGT_CREATE)
1235 chptr = (struct Channel*) MyMalloc(sizeof(struct Channel) + len);
1237 ++UserStats.channels;
1238 memset(chptr, 0, sizeof(struct Channel));
1239 strcpy(chptr->chname, chname);
1240 if (GlobalChannelList)
1241 GlobalChannelList->prev = chptr;
1243 chptr->next = GlobalChannelList;
1244 chptr->creationtime = MyUser(cptr) ? TStime() : (time_t) 0;
1245 GlobalChannelList = chptr;
1251 void add_invite(struct Client *cptr, struct Channel *chptr)
1253 struct SLink *inv, **tmp;
1255 del_invite(cptr, chptr);
1257 * Delete last link in chain if the list is max length
1259 assert(list_length((cli_user(cptr))->invited) == (cli_user(cptr))->invites);
1260 if ((cli_user(cptr))->invites >= feature_int(FEAT_MAXCHANNELSPERUSER))
1261 del_invite(cptr, (cli_user(cptr))->invited->value.chptr);
1263 * Add client to channel invite list
1266 inv->value.cptr = cptr;
1267 inv->next = chptr->invites;
1268 chptr->invites = inv;
1270 * Add channel to the end of the client invite list
1272 for (tmp = &((cli_user(cptr))->invited); *tmp; tmp = &((*tmp)->next));
1274 inv->value.chptr = chptr;
1277 (cli_user(cptr))->invites++;
1281 * Delete Invite block from channel invite list and client invite list
1283 void del_invite(struct Client *cptr, struct Channel *chptr)
1285 struct SLink **inv, *tmp;
1287 for (inv = &(chptr->invites); (tmp = *inv); inv = &tmp->next)
1288 if (tmp->value.cptr == cptr)
1293 (cli_user(cptr))->invites--;
1297 for (inv = &((cli_user(cptr))->invited); (tmp = *inv); inv = &tmp->next)
1298 if (tmp->value.chptr == chptr)
1307 /* List and skip all channels that are listen */
1308 void list_next_channels(struct Client *cptr, int nr)
1310 struct ListingArgs *args = cli_listing(cptr);
1311 struct Channel *chptr = args->chptr;
1312 chptr->mode.mode &= ~MODE_LISTED;
1313 while (is_listed(chptr) || --nr >= 0)
1315 for (; chptr; chptr = chptr->next)
1317 if (!cli_user(cptr) || (SecretChannel(chptr) && !find_channel_member(cptr, chptr)))
1319 if (chptr->users > args->min_users && chptr->users < args->max_users &&
1320 chptr->creationtime > args->min_time &&
1321 chptr->creationtime < args->max_time &&
1322 (!args->topic_limits || (*chptr->topic &&
1323 chptr->topic_time > args->min_topic_time &&
1324 chptr->topic_time < args->max_topic_time)))
1326 if (ShowChannel(cptr,chptr))
1327 send_reply(cptr, RPL_LIST, chptr->chname, chptr->users,
1329 chptr = chptr->next;
1335 MyFree(cli_listing(cptr));
1336 cli_listing(cptr) = NULL;
1337 send_reply(cptr, RPL_LISTEND);
1343 (cli_listing(cptr))->chptr = chptr;
1344 chptr->mode.mode |= MODE_LISTED;
1357 * X --a--> A --b--> B --d--> D
1361 * Where `who' is being KICK-ed by a "KICK" message received by server 'A'
1362 * via 'a', or on server 'B' via either 'b' or 'c', or on server D via 'd'.
1364 * a) On server A : set CHFL_ZOMBIE for `who' (lp) and pass on the KICK.
1365 * Remove the user immedeately when no users are left on the channel.
1366 * b) On server B : remove the user (who/lp) from the channel, send a
1367 * PART upstream (to A) and pass on the KICK.
1368 * c) KICKed by `client'; On server B : remove the user (who/lp) from the
1369 * channel, and pass on the KICK.
1370 * d) On server D : remove the user (who/lp) from the channel, and pass on
1374 * - Setting the ZOMBIE flag never hurts, we either remove the
1375 * client after that or we don't.
1376 * - The KICK message was already passed on, as should be in all cases.
1377 * - `who' is removed in all cases except case a) when users are left.
1378 * - A PART is only sent upstream in case b).
1384 * 1 --- 2 --- 3 --- 4 --- 5
1388 * We also need to turn 'who' into a zombie on servers 1 and 6,
1389 * because a KICK from 'who' (kicking someone else in that direction)
1390 * can arrive there afterwards - which should not be bounced itself.
1391 * Therefore case a) also applies for servers 1 and 6.
1395 void make_zombie(struct Membership* member, struct Client* who, struct Client* cptr,
1396 struct Client* sptr, struct Channel* chptr)
1398 assert(0 != member);
1403 /* Default for case a): */
1406 /* Case b) or c) ?: */
1407 if (MyUser(who)) /* server 4 */
1409 if (IsServer(cptr)) /* Case b) ? */
1410 sendcmdto_one(who, CMD_PART, cptr, "%H", chptr);
1411 remove_user_from_channel(who, chptr);
1414 if (cli_from(who) == cptr) /* True on servers 1, 5 and 6 */
1416 struct Client *acptr = IsServer(sptr) ? sptr : (cli_user(sptr))->server;
1417 for (; acptr != &me; acptr = (cli_serv(acptr))->up)
1418 if (acptr == (cli_user(who))->server) /* Case d) (server 5) */
1420 remove_user_from_channel(who, chptr);
1425 /* Case a) (servers 1, 2, 3 and 6) */
1426 if (channel_all_zombies(chptr))
1427 remove_user_from_channel(who, chptr);
1429 /* XXX Can't actually call Debug here; if the channel is all zombies,
1430 * chptr will no longer exist when we get here.
1431 Debug((DEBUG_INFO, "%s is now a zombie on %s", who->name, chptr->chname));
1435 int number_of_zombies(struct Channel *chptr)
1437 struct Membership* member;
1441 for (member = chptr->members; member; member = member->next_member) {
1442 if (IsZombie(member))
1449 * This helper function builds an argument string in strptr, consisting
1450 * of the original string, a space, and str1 and str2 concatenated (if,
1451 * of course, str2 is not NULL)
1454 build_string(char *strptr, int *strptr_i, char *str1, char *str2, char c)
1457 strptr[(*strptr_i)++] = c;
1460 strptr[(*strptr_i)++] = *(str1++);
1464 strptr[(*strptr_i)++] = *(str2++);
1466 strptr[(*strptr_i)] = '\0';
1470 * This is the workhorse of our ModeBuf suite; this actually generates the
1471 * output MODE commands, HACK notices, or whatever. It's pretty complicated.
1474 modebuf_flush_int(struct ModeBuf *mbuf, int all)
1476 /* we only need the flags that don't take args right now */
1477 static int flags[] = {
1478 /* MODE_CHANOP, 'o', */
1479 /* MODE_VOICE, 'v', */
1482 MODE_MODERATED, 'm',
1483 MODE_TOPICLIMIT, 't',
1484 MODE_INVITEONLY, 'i',
1485 MODE_NOPRIVMSGS, 'n',
1487 /* MODE_KEY, 'k', */
1488 /* MODE_BAN, 'b', */
1489 /* MODE_LIMIT, 'l', */
1490 /* MODE_APASS, 'A', */
1491 /* MODE_UPASS, 'u', */
1497 struct Client *app_source; /* where the MODE appears to come from */
1499 char addbuf[20]; /* accumulates +psmtin, etc. */
1501 char rembuf[20]; /* accumulates -psmtin, etc. */
1503 char *bufptr; /* we make use of indirection to simplify the code */
1506 char addstr[BUFSIZE]; /* accumulates MODE parameters to add */
1508 char remstr[BUFSIZE]; /* accumulates MODE parameters to remove */
1510 char *strptr; /* more indirection to simplify the code */
1513 int totalbuflen = BUFSIZE - 200; /* fuzz factor -- don't overrun buffer! */
1516 char limitbuf[20]; /* convert limits to strings */
1518 unsigned int limitdel = MODE_LIMIT;
1522 /* If the ModeBuf is empty, we have nothing to do */
1523 if (mbuf->mb_add == 0 && mbuf->mb_rem == 0 && mbuf->mb_count == 0)
1526 /* Ok, if we were given the OPMODE flag, hide the source if its a user */
1527 if (mbuf->mb_dest & MODEBUF_DEST_OPMODE && !IsServer(mbuf->mb_source))
1530 app_source = mbuf->mb_source;
1533 * Account for user we're bouncing; we have to get it in on the first
1534 * bounced MODE, or we could have problems
1536 if (mbuf->mb_dest & MODEBUF_DEST_DEOP)
1537 totalbuflen -= 6; /* numeric nick == 5, plus one space */
1539 /* Calculate the simple flags */
1540 for (flag_p = flags; flag_p[0]; flag_p += 2) {
1541 if (*flag_p & mbuf->mb_add)
1542 addbuf[addbuf_i++] = flag_p[1];
1543 else if (*flag_p & mbuf->mb_rem)
1544 rembuf[rembuf_i++] = flag_p[1];
1547 /* Now go through the modes with arguments... */
1548 for (i = 0; i < mbuf->mb_count; i++) {
1549 if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
1551 bufptr_i = &addbuf_i;
1554 bufptr_i = &rembuf_i;
1557 if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE)) {
1558 tmp = strlen(cli_name(MB_CLIENT(mbuf, i)));
1560 if ((totalbuflen - IRCD_MAX(5, tmp)) <= 0) /* don't overflow buffer */
1561 MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
1563 bufptr[(*bufptr_i)++] = MB_TYPE(mbuf, i) & MODE_CHANOP ? 'o' : 'v';
1564 totalbuflen -= IRCD_MAX(5, tmp) + 1;
1566 } else if (MB_TYPE(mbuf, i) & (MODE_KEY | MODE_BAN | MODE_APASS | MODE_UPASS)) {
1567 tmp = strlen(MB_STRING(mbuf, i));
1569 if ((totalbuflen - tmp) <= 0) /* don't overflow buffer */
1570 MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
1573 switch(MB_TYPE(mbuf, i) & (MODE_KEY | MODE_BAN | MODE_APASS | MODE_UPASS))
1588 bufptr[(*bufptr_i)++] = mode_char;
1589 totalbuflen -= tmp + 1;
1591 } else if (MB_TYPE(mbuf, i) & MODE_LIMIT) {
1592 /* if it's a limit, we also format the number */
1593 ircd_snprintf(0, limitbuf, sizeof(limitbuf), "%u", MB_UINT(mbuf, i));
1595 tmp = strlen(limitbuf);
1597 if ((totalbuflen - tmp) <= 0) /* don't overflow buffer */
1598 MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
1600 bufptr[(*bufptr_i)++] = 'l';
1601 totalbuflen -= tmp + 1;
1606 /* terminate the mode strings */
1607 addbuf[addbuf_i] = '\0';
1608 rembuf[rembuf_i] = '\0';
1610 /* If we're building a user visible MODE or HACK... */
1611 if (mbuf->mb_dest & (MODEBUF_DEST_CHANNEL | MODEBUF_DEST_HACK2 |
1612 MODEBUF_DEST_HACK3 | MODEBUF_DEST_HACK4 |
1613 MODEBUF_DEST_LOG)) {
1614 /* Set up the parameter strings */
1620 for (i = 0; i < mbuf->mb_count; i++) {
1621 if (MB_TYPE(mbuf, i) & MODE_SAVE)
1624 if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
1626 strptr_i = &addstr_i;
1629 strptr_i = &remstr_i;
1632 /* deal with clients... */
1633 if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE))
1634 build_string(strptr, strptr_i, cli_name(MB_CLIENT(mbuf, i)), 0, ' ');
1636 /* deal with strings... */
1637 else if (MB_TYPE(mbuf, i) & (MODE_KEY | MODE_BAN))
1638 build_string(strptr, strptr_i, MB_STRING(mbuf, i), 0, ' ');
1640 /* deal with invisible passwords */
1641 else if (MB_TYPE(mbuf, i) & (MODE_APASS | MODE_UPASS))
1642 build_string(strptr, strptr_i, "*", 0, ' ');
1645 * deal with limit; note we cannot include the limit parameter if we're
1648 else if ((MB_TYPE(mbuf, i) & (MODE_ADD | MODE_LIMIT)) ==
1649 (MODE_ADD | MODE_LIMIT))
1650 build_string(strptr, strptr_i, limitbuf, 0, ' ');
1653 /* send the messages off to their destination */
1654 if (mbuf->mb_dest & MODEBUF_DEST_HACK2)
1655 sendto_opmask_butone(0, SNO_HACK2, "HACK(2): %s MODE %s %s%s%s%s%s%s "
1657 #ifdef HEAD_IN_SAND_SNOTICES
1658 cli_name(mbuf->mb_source),
1660 cli_name(app_source),
1662 mbuf->mb_channel->chname,
1663 rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
1664 addbuf, remstr, addstr,
1665 mbuf->mb_channel->creationtime);
1667 if (mbuf->mb_dest & MODEBUF_DEST_HACK3)
1668 sendto_opmask_butone(0, SNO_HACK3, "BOUNCE or HACK(3): %s MODE %s "
1669 "%s%s%s%s%s%s [%Tu]",
1670 #ifdef HEAD_IN_SAND_SNOTICES
1671 cli_name(mbuf->mb_source),
1673 cli_name(app_source),
1675 mbuf->mb_channel->chname, rembuf_i ? "-" : "",
1676 rembuf, addbuf_i ? "+" : "", addbuf, remstr, addstr,
1677 mbuf->mb_channel->creationtime);
1679 if (mbuf->mb_dest & MODEBUF_DEST_HACK4)
1680 sendto_opmask_butone(0, SNO_HACK4, "HACK(4): %s MODE %s %s%s%s%s%s%s "
1682 #ifdef HEAD_IN_SAND_SNOTICES
1683 cli_name(mbuf->mb_source),
1685 cli_name(app_source),
1687 mbuf->mb_channel->chname,
1688 rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
1689 addbuf, remstr, addstr,
1690 mbuf->mb_channel->creationtime);
1692 if (mbuf->mb_dest & MODEBUF_DEST_LOG)
1693 log_write(LS_OPERMODE, L_INFO, LOG_NOSNOTICE,
1694 "%#C OPMODE %H %s%s%s%s%s%s", mbuf->mb_source,
1695 mbuf->mb_channel, rembuf_i ? "-" : "", rembuf,
1696 addbuf_i ? "+" : "", addbuf, remstr, addstr);
1698 if (mbuf->mb_dest & MODEBUF_DEST_CHANNEL)
1699 sendcmdto_channel_butserv_butone(app_source, CMD_MODE, mbuf->mb_channel, NULL,
1700 "%H %s%s%s%s%s%s", mbuf->mb_channel,
1701 rembuf_i ? "-" : "", rembuf,
1702 addbuf_i ? "+" : "", addbuf, remstr, addstr);
1705 /* Now are we supposed to propagate to other servers? */
1706 if (mbuf->mb_dest & MODEBUF_DEST_SERVER) {
1707 /* set up parameter string */
1714 * limit is supressed if we're removing it; we have to figure out which
1715 * direction is the direction for it to be removed, though...
1717 limitdel |= (mbuf->mb_dest & MODEBUF_DEST_HACK2) ? MODE_DEL : MODE_ADD;
1719 for (i = 0; i < mbuf->mb_count; i++) {
1720 if (MB_TYPE(mbuf, i) & MODE_SAVE)
1723 if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
1725 strptr_i = &addstr_i;
1728 strptr_i = &remstr_i;
1731 /* deal with modes that take clients */
1732 if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE))
1733 build_string(strptr, strptr_i, NumNick(MB_CLIENT(mbuf, i)), ' ');
1735 /* deal with modes that take strings */
1736 else if (MB_TYPE(mbuf, i) & (MODE_KEY | MODE_BAN | MODE_APASS | MODE_UPASS))
1737 build_string(strptr, strptr_i, MB_STRING(mbuf, i), 0, ' ');
1740 * deal with the limit. Logic here is complicated; if HACK2 is set,
1741 * we're bouncing the mode, so sense is reversed, and we have to
1742 * include the original limit if it looks like it's being removed
1744 else if ((MB_TYPE(mbuf, i) & limitdel) == limitdel)
1745 build_string(strptr, strptr_i, limitbuf, 0, ' ');
1748 /* we were told to deop the source */
1749 if (mbuf->mb_dest & MODEBUF_DEST_DEOP) {
1750 addbuf[addbuf_i++] = 'o'; /* remember, sense is reversed */
1751 addbuf[addbuf_i] = '\0'; /* terminate the string... */
1752 build_string(addstr, &addstr_i, NumNick(mbuf->mb_source), ' ');
1754 /* mark that we've done this, so we don't do it again */
1755 mbuf->mb_dest &= ~MODEBUF_DEST_DEOP;
1758 if (mbuf->mb_dest & MODEBUF_DEST_OPMODE) {
1759 /* If OPMODE was set, we're propagating the mode as an OPMODE message */
1760 sendcmdto_serv_butone(mbuf->mb_source, CMD_OPMODE, mbuf->mb_connect,
1761 "%H %s%s%s%s%s%s", mbuf->mb_channel,
1762 rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
1763 addbuf, remstr, addstr);
1764 } else if (mbuf->mb_dest & MODEBUF_DEST_BOUNCE) {
1766 * If HACK2 was set, we're bouncing; we send the MODE back to the
1767 * connection we got it from with the senses reversed and a TS of 0;
1770 sendcmdto_one(&me, CMD_MODE, mbuf->mb_connect, "%H %s%s%s%s%s%s %Tu",
1771 mbuf->mb_channel, addbuf_i ? "-" : "", addbuf,
1772 rembuf_i ? "+" : "", rembuf, addstr, remstr,
1773 mbuf->mb_channel->creationtime);
1776 * We're propagating a normal MODE command to the rest of the network;
1777 * we send the actual channel TS unless this is a HACK3 or a HACK4
1779 if (IsServer(mbuf->mb_source))
1780 sendcmdto_serv_butone(mbuf->mb_source, CMD_MODE, mbuf->mb_connect,
1781 "%H %s%s%s%s%s%s %Tu", mbuf->mb_channel,
1782 rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
1783 addbuf, remstr, addstr,
1784 (mbuf->mb_dest & MODEBUF_DEST_HACK4) ? 0 :
1785 mbuf->mb_channel->creationtime);
1787 sendcmdto_serv_butone(mbuf->mb_source, CMD_MODE, mbuf->mb_connect,
1788 "%H %s%s%s%s%s%s", mbuf->mb_channel,
1789 rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
1790 addbuf, remstr, addstr);
1794 /* We've drained the ModeBuf... */
1799 /* reinitialize the mode-with-arg slots */
1800 for (i = 0; i < MAXMODEPARAMS; i++) {
1801 /* If we saved any, pack them down */
1802 if (MB_TYPE(mbuf, i) & MODE_SAVE) {
1803 mbuf->mb_modeargs[mbuf->mb_count] = mbuf->mb_modeargs[i];
1804 MB_TYPE(mbuf, mbuf->mb_count) &= ~MODE_SAVE; /* don't save anymore */
1806 if (mbuf->mb_count++ == i) /* don't overwrite our hard work */
1808 } else if (MB_TYPE(mbuf, i) & MODE_FREE)
1809 MyFree(MB_STRING(mbuf, i)); /* free string if needed */
1811 MB_TYPE(mbuf, i) = 0;
1812 MB_UINT(mbuf, i) = 0;
1815 /* If we're supposed to flush it all, do so--all hail tail recursion */
1816 if (all && mbuf->mb_count)
1817 return modebuf_flush_int(mbuf, 1);
1823 * This routine just initializes a ModeBuf structure with the information
1824 * needed and the options given.
1827 modebuf_init(struct ModeBuf *mbuf, struct Client *source,
1828 struct Client *connect, struct Channel *chan, unsigned int dest)
1833 assert(0 != source);
1839 mbuf->mb_source = source;
1840 mbuf->mb_connect = connect;
1841 mbuf->mb_channel = chan;
1842 mbuf->mb_dest = dest;
1845 /* clear each mode-with-parameter slot */
1846 for (i = 0; i < MAXMODEPARAMS; i++) {
1847 MB_TYPE(mbuf, i) = 0;
1848 MB_UINT(mbuf, i) = 0;
1853 * This routine simply adds modes to be added or deleted; do a binary OR
1854 * with either MODE_ADD or MODE_DEL
1857 modebuf_mode(struct ModeBuf *mbuf, unsigned int mode)
1860 assert(0 != (mode & (MODE_ADD | MODE_DEL)));
1862 mode &= (MODE_ADD | MODE_DEL | MODE_PRIVATE | MODE_SECRET | MODE_MODERATED |
1863 MODE_TOPICLIMIT | MODE_INVITEONLY | MODE_NOPRIVMSGS | MODE_REGONLY);
1865 if (!(mode & ~(MODE_ADD | MODE_DEL))) /* don't add empty modes... */
1868 if (mode & MODE_ADD) {
1869 mbuf->mb_rem &= ~mode;
1870 mbuf->mb_add |= mode;
1872 mbuf->mb_add &= ~mode;
1873 mbuf->mb_rem |= mode;
1878 * This routine adds a mode to be added or deleted that takes a unsigned
1879 * int parameter; mode may *only* be the relevant mode flag ORed with one
1880 * of MODE_ADD or MODE_DEL
1883 modebuf_mode_uint(struct ModeBuf *mbuf, unsigned int mode, unsigned int uint)
1886 assert(0 != (mode & (MODE_ADD | MODE_DEL)));
1888 MB_TYPE(mbuf, mbuf->mb_count) = mode;
1889 MB_UINT(mbuf, mbuf->mb_count) = uint;
1891 /* when we've reached the maximal count, flush the buffer */
1892 if (++mbuf->mb_count >=
1893 (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
1894 modebuf_flush_int(mbuf, 0);
1898 * This routine adds a mode to be added or deleted that takes a string
1899 * parameter; mode may *only* be the relevant mode flag ORed with one of
1900 * MODE_ADD or MODE_DEL
1903 modebuf_mode_string(struct ModeBuf *mbuf, unsigned int mode, char *string,
1907 assert(0 != (mode & (MODE_ADD | MODE_DEL)));
1909 MB_TYPE(mbuf, mbuf->mb_count) = mode | (free ? MODE_FREE : 0);
1910 MB_STRING(mbuf, mbuf->mb_count) = string;
1912 /* when we've reached the maximal count, flush the buffer */
1913 if (++mbuf->mb_count >=
1914 (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
1915 modebuf_flush_int(mbuf, 0);
1919 * This routine adds a mode to be added or deleted that takes a client
1920 * parameter; mode may *only* be the relevant mode flag ORed with one of
1921 * MODE_ADD or MODE_DEL
1924 modebuf_mode_client(struct ModeBuf *mbuf, unsigned int mode,
1925 struct Client *client)
1928 assert(0 != (mode & (MODE_ADD | MODE_DEL)));
1930 MB_TYPE(mbuf, mbuf->mb_count) = mode;
1931 MB_CLIENT(mbuf, mbuf->mb_count) = client;
1933 /* when we've reached the maximal count, flush the buffer */
1934 if (++mbuf->mb_count >=
1935 (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
1936 modebuf_flush_int(mbuf, 0);
1940 * This is the exported binding for modebuf_flush()
1943 modebuf_flush(struct ModeBuf *mbuf)
1945 return modebuf_flush_int(mbuf, 1);
1949 * This extracts the simple modes contained in mbuf
1952 modebuf_extract(struct ModeBuf *mbuf, char *buf)
1954 static int flags[] = {
1955 /* MODE_CHANOP, 'o', */
1956 /* MODE_VOICE, 'v', */
1959 MODE_MODERATED, 'm',
1960 MODE_TOPICLIMIT, 't',
1961 MODE_INVITEONLY, 'i',
1962 MODE_NOPRIVMSGS, 'n',
1966 /* MODE_BAN, 'b', */
1972 int i, bufpos = 0, len;
1974 char *key = 0, limitbuf[20];
1975 char *apass, *upass;
1984 for (i = 0; i < mbuf->mb_count; i++) { /* find keys and limits */
1985 if (MB_TYPE(mbuf, i) & MODE_ADD) {
1986 add |= MB_TYPE(mbuf, i) & (MODE_KEY | MODE_LIMIT | MODE_APASS | MODE_UPASS);
1988 if (MB_TYPE(mbuf, i) & MODE_KEY) /* keep strings */
1989 key = MB_STRING(mbuf, i);
1990 else if (MB_TYPE(mbuf, i) & MODE_LIMIT)
1991 ircd_snprintf(0, limitbuf, sizeof(limitbuf), "%u", MB_UINT(mbuf, i));
1992 else if (MB_TYPE(mbuf, i) & MODE_UPASS)
1993 upass = MB_STRING(mbuf, i);
1994 else if (MB_TYPE(mbuf, i) & MODE_APASS)
1995 apass = MB_STRING(mbuf, i);
2002 buf[bufpos++] = '+'; /* start building buffer */
2004 for (flag_p = flags; flag_p[0]; flag_p += 2)
2006 buf[bufpos++] = flag_p[1];
2008 for (i = 0, len = bufpos; i < len; i++) {
2010 build_string(buf, &bufpos, key, 0, ' ');
2011 else if (buf[i] == 'l')
2012 build_string(buf, &bufpos, limitbuf, 0, ' ');
2013 else if (buf[i] == 'u')
2014 build_string(buf, &bufpos, upass, 0, ' ');
2015 else if (buf[i] == 'A')
2016 build_string(buf, &bufpos, apass, 0, ' ');
2025 * Simple function to invalidate bans
2028 mode_ban_invalidate(struct Channel *chan)
2030 struct Membership *member;
2032 for (member = chan->members; member; member = member->next_member)
2033 ClearBanValid(member);
2037 * Simple function to drop invite structures
2040 mode_invite_clear(struct Channel *chan)
2042 while (chan->invites)
2043 del_invite(chan->invites->value.cptr, chan);
2046 /* What we've done for mode_parse so far... */
2047 #define DONE_LIMIT 0x01 /* We've set the limit */
2048 #define DONE_KEY 0x02 /* We've set the key */
2049 #define DONE_BANLIST 0x04 /* We've sent the ban list */
2050 #define DONE_NOTOPER 0x08 /* We've sent a "Not oper" error */
2051 #define DONE_BANCLEAN 0x10 /* We've cleaned bans... */
2052 #define DONE_UPASS 0x20 /* We've set user pass */
2053 #define DONE_APASS 0x40 /* We've set admin pass */
2056 struct ModeBuf *mbuf;
2057 struct Client *cptr;
2058 struct Client *sptr;
2059 struct Channel *chptr;
2060 struct Membership *member;
2071 struct SLink banlist[MAXPARA];
2074 struct Client *client;
2075 } cli_change[MAXPARA];
2079 * Here's a helper function to deal with sending along "Not oper" or
2080 * "Not member" messages
2083 send_notoper(struct ParseState *state)
2085 if (state->done & DONE_NOTOPER)
2088 send_reply(state->sptr, (state->flags & MODE_PARSE_NOTOPER) ?
2089 ERR_CHANOPRIVSNEEDED : ERR_NOTONCHANNEL, state->chptr->chname);
2091 state->done |= DONE_NOTOPER;
2095 * Helper function to convert limits
2098 mode_parse_limit(struct ParseState *state, int *flag_p)
2100 unsigned int t_limit;
2102 if (state->dir == MODE_ADD) { /* convert arg only if adding limit */
2103 if (MyUser(state->sptr) && state->max_args <= 0) /* too many args? */
2106 if (state->parc <= 0) { /* warn if not enough args */
2107 if (MyUser(state->sptr))
2108 need_more_params(state->sptr, "MODE +l");
2112 t_limit = strtoul(state->parv[state->args_used++], 0, 10); /* grab arg */
2116 if (!(state->flags & MODE_PARSE_WIPEOUT) &&
2117 (!t_limit || t_limit == state->chptr->mode.limit))
2120 t_limit = state->chptr->mode.limit;
2122 /* If they're not an oper, they can't change modes */
2123 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2124 send_notoper(state);
2128 if (state->done & DONE_LIMIT) /* allow limit to be set only once */
2130 state->done |= DONE_LIMIT;
2135 modebuf_mode_uint(state->mbuf, state->dir | flag_p[0], t_limit);
2137 if (state->flags & MODE_PARSE_SET) { /* set the limit */
2138 if (state->dir & MODE_ADD) {
2139 state->chptr->mode.mode |= flag_p[0];
2140 state->chptr->mode.limit = t_limit;
2142 state->chptr->mode.mode &= ~flag_p[0];
2143 state->chptr->mode.limit = 0;
2149 * Helper function to convert keys
2152 mode_parse_key(struct ParseState *state, int *flag_p)
2157 if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
2160 if (state->parc <= 0) { /* warn if not enough args */
2161 if (MyUser(state->sptr))
2162 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +k" :
2167 t_str = state->parv[state->args_used++]; /* grab arg */
2171 /* If they're not an oper, they can't change modes */
2172 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2173 send_notoper(state);
2177 if (state->done & DONE_KEY) /* allow key to be set only once */
2179 state->done |= DONE_KEY;
2183 /* clean up the key string */
2185 while (*++s > ' ' && *s != ':' && --t_len)
2189 if (!*t_str) { /* warn if empty */
2190 if (MyUser(state->sptr))
2191 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +k" :
2199 /* can't add a key if one is set, nor can one remove the wrong key */
2200 if (!(state->flags & MODE_PARSE_FORCE))
2201 if ((state->dir == MODE_ADD && *state->chptr->mode.key) ||
2202 (state->dir == MODE_DEL &&
2203 ircd_strcmp(state->chptr->mode.key, t_str))) {
2204 send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
2208 if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
2209 !ircd_strcmp(state->chptr->mode.key, t_str))
2210 return; /* no key change */
2212 if (state->flags & MODE_PARSE_BOUNCE) {
2213 if (*state->chptr->mode.key) /* reset old key */
2214 modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
2215 state->chptr->mode.key, 0);
2216 else /* remove new bogus key */
2217 modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
2218 } else /* send new key */
2219 modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
2221 if (state->flags & MODE_PARSE_SET) {
2222 if (state->dir == MODE_ADD) /* set the new key */
2223 ircd_strncpy(state->chptr->mode.key, t_str, KEYLEN);
2224 else /* remove the old key */
2225 *state->chptr->mode.key = '\0';
2230 * Helper function to convert user passes
2233 mode_parse_upass(struct ParseState *state, int *flag_p)
2238 if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
2241 if (state->parc <= 0) { /* warn if not enough args */
2242 if (MyUser(state->sptr))
2243 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +u" :
2248 t_str = state->parv[state->args_used++]; /* grab arg */
2252 /* If they're not an oper, they can't change modes */
2253 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2254 send_notoper(state);
2258 if (state->done & DONE_UPASS) /* allow upass to be set only once */
2260 state->done |= DONE_UPASS;
2262 t_len = PASSLEN + 1;
2264 /* clean up the upass string */
2266 while (*++s > ' ' && *s != ':' && --t_len)
2270 if (!*t_str) { /* warn if empty */
2271 if (MyUser(state->sptr))
2272 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +u" :
2280 /* can't add a upass if one is set, nor can one remove the wrong upass */
2281 if (!(state->flags & MODE_PARSE_FORCE))
2282 if ((state->dir == MODE_ADD && *state->chptr->mode.upass) ||
2283 (state->dir == MODE_DEL &&
2284 ircd_strcmp(state->chptr->mode.upass, t_str))) {
2285 send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
2289 if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
2290 !ircd_strcmp(state->chptr->mode.upass, t_str))
2291 return; /* no upass change */
2293 if (state->flags & MODE_PARSE_BOUNCE) {
2294 if (*state->chptr->mode.upass) /* reset old upass */
2295 modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
2296 state->chptr->mode.upass, 0);
2297 else /* remove new bogus upass */
2298 modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
2299 } else /* send new upass */
2300 modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
2302 if (state->flags & MODE_PARSE_SET) {
2303 if (state->dir == MODE_ADD) /* set the new upass */
2304 ircd_strncpy(state->chptr->mode.upass, t_str, PASSLEN);
2305 else /* remove the old upass */
2306 *state->chptr->mode.upass = '\0';
2311 * Helper function to convert admin passes
2314 mode_parse_apass(struct ParseState *state, int *flag_p)
2319 if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
2322 if (state->parc <= 0) { /* warn if not enough args */
2323 if (MyUser(state->sptr))
2324 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +A" :
2329 t_str = state->parv[state->args_used++]; /* grab arg */
2333 /* If they're not an oper, they can't change modes */
2334 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2335 send_notoper(state);
2339 if (state->done & DONE_APASS) /* allow apass to be set only once */
2341 state->done |= DONE_APASS;
2343 t_len = PASSLEN + 1;
2345 /* clean up the apass string */
2347 while (*++s > ' ' && *s != ':' && --t_len)
2351 if (!*t_str) { /* warn if empty */
2352 if (MyUser(state->sptr))
2353 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +A" :
2361 /* can't add a apass if one is set, nor can one remove the wrong apass */
2362 if (!(state->flags & MODE_PARSE_FORCE))
2363 if ((state->dir == MODE_ADD && *state->chptr->mode.apass) ||
2364 (state->dir == MODE_DEL &&
2365 ircd_strcmp(state->chptr->mode.apass, t_str))) {
2366 send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
2370 if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
2371 !ircd_strcmp(state->chptr->mode.apass, t_str))
2372 return; /* no apass change */
2374 if (state->flags & MODE_PARSE_BOUNCE) {
2375 if (*state->chptr->mode.apass) /* reset old apass */
2376 modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
2377 state->chptr->mode.apass, 0);
2378 else /* remove new bogus apass */
2379 modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
2380 } else /* send new apass */
2381 modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
2383 if (state->flags & MODE_PARSE_SET) {
2384 if (state->dir == MODE_ADD) /* set the new apass */
2385 ircd_strncpy(state->chptr->mode.apass, t_str, PASSLEN);
2386 else /* remove the old apass */
2387 *state->chptr->mode.apass = '\0';
2392 * Helper function to convert bans
2395 mode_parse_ban(struct ParseState *state, int *flag_p)
2398 struct SLink *ban, *newban = 0;
2400 if (state->parc <= 0) { /* Not enough args, send ban list */
2401 if (MyUser(state->sptr) && !(state->done & DONE_BANLIST)) {
2402 send_ban_list(state->sptr, state->chptr);
2403 state->done |= DONE_BANLIST;
2409 if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
2412 t_str = state->parv[state->args_used++]; /* grab arg */
2416 /* If they're not an oper, they can't change modes */
2417 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2418 send_notoper(state);
2422 if ((s = strchr(t_str, ' ')))
2425 if (!*t_str || *t_str == ':') { /* warn if empty */
2426 if (MyUser(state->sptr))
2427 need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +b" :
2432 t_str = collapse(pretty_mask(t_str));
2434 /* remember the ban for the moment... */
2435 if (state->dir == MODE_ADD) {
2436 newban = state->banlist + (state->numbans++);
2439 DupString(newban->value.ban.banstr, t_str);
2440 newban->value.ban.who = cli_name(state->sptr);
2441 newban->value.ban.when = TStime();
2443 newban->flags = CHFL_BAN | MODE_ADD;
2445 if ((s = strrchr(t_str, '@')) && check_if_ipmask(s + 1))
2446 newban->flags |= CHFL_BAN_IPMASK;
2449 if (!state->chptr->banlist) {
2450 state->chptr->banlist = newban; /* add our ban with its flags */
2451 state->done |= DONE_BANCLEAN;
2455 /* Go through all bans */
2456 for (ban = state->chptr->banlist; ban; ban = ban->next) {
2457 /* first, clean the ban flags up a bit */
2458 if (!(state->done & DONE_BANCLEAN))
2459 /* Note: We're overloading *lots* of bits here; be careful! */
2460 ban->flags &= ~(MODE_ADD | MODE_DEL | CHFL_BAN_OVERLAPPED);
2464 * MODE_ADD - Ban was added; if we're bouncing modes,
2465 * then we'll remove it below; otherwise,
2466 * we'll have to allocate a real ban
2468 * MODE_DEL - Ban was marked for deletion; if we're
2469 * bouncing modes, we'll have to re-add it,
2470 * otherwise, we'll have to remove it
2472 * CHFL_BAN_OVERLAPPED - The ban we added turns out to overlap
2473 * with a ban already set; if we're
2474 * bouncing modes, we'll have to bounce
2475 * this one; otherwise, we'll just ignore
2476 * it when we process added bans
2479 if (state->dir == MODE_DEL && !ircd_strcmp(ban->value.ban.banstr, t_str)) {
2480 ban->flags |= MODE_DEL; /* delete one ban */
2482 if (state->done & DONE_BANCLEAN) /* If we're cleaning, finish */
2484 } else if (state->dir == MODE_ADD) {
2485 /* if the ban already exists, don't worry about it */
2486 if (!ircd_strcmp(ban->value.ban.banstr, t_str)) {
2487 newban->flags &= ~MODE_ADD; /* don't add ban at all */
2488 MyFree(newban->value.ban.banstr); /* stopper a leak */
2489 state->numbans--; /* deallocate last ban */
2490 if (state->done & DONE_BANCLEAN) /* If we're cleaning, finish */
2492 } else if (!mmatch(ban->value.ban.banstr, t_str)) {
2493 if (!(ban->flags & MODE_DEL))
2494 newban->flags |= CHFL_BAN_OVERLAPPED; /* our ban overlaps */
2495 } else if (!mmatch(t_str, ban->value.ban.banstr))
2496 ban->flags |= MODE_DEL; /* mark ban for deletion: overlapping */
2498 if (!ban->next && (newban->flags & MODE_ADD)) {
2499 ban->next = newban; /* add our ban with its flags */
2500 break; /* get out of loop */
2504 state->done |= DONE_BANCLEAN;
2508 * This is the bottom half of the ban processor
2511 mode_process_bans(struct ParseState *state)
2513 struct SLink *ban, *newban, *prevban, *nextban;
2519 for (prevban = 0, ban = state->chptr->banlist; ban; ban = nextban) {
2521 banlen = strlen(ban->value.ban.banstr);
2523 nextban = ban->next;
2525 if ((ban->flags & (MODE_DEL | MODE_ADD)) == (MODE_DEL | MODE_ADD)) {
2527 prevban->next = 0; /* Break the list; ban isn't a real ban */
2529 state->chptr->banlist = 0;
2534 MyFree(ban->value.ban.banstr);
2537 } else if (ban->flags & MODE_DEL) { /* Deleted a ban? */
2538 modebuf_mode_string(state->mbuf, MODE_DEL | MODE_BAN,
2539 ban->value.ban.banstr,
2540 state->flags & MODE_PARSE_SET);
2542 if (state->flags & MODE_PARSE_SET) { /* Ok, make it take effect */
2543 if (prevban) /* clip it out of the list... */
2544 prevban->next = ban->next;
2546 state->chptr->banlist = ban->next;
2551 MyFree(ban->value.ban.who);
2555 continue; /* next ban; keep prevban like it is */
2557 ban->flags &= (CHFL_BAN | CHFL_BAN_IPMASK); /* unset other flags */
2558 } else if (ban->flags & MODE_ADD) { /* adding a ban? */
2560 prevban->next = 0; /* Break the list; ban isn't a real ban */
2562 state->chptr->banlist = 0;
2564 /* If we're supposed to ignore it, do so. */
2565 if (ban->flags & CHFL_BAN_OVERLAPPED &&
2566 !(state->flags & MODE_PARSE_BOUNCE)) {
2570 MyFree(ban->value.ban.banstr);
2572 if (state->flags & MODE_PARSE_SET && MyUser(state->sptr) &&
2573 (len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXBANS)) ||
2574 count >= feature_int(FEAT_MAXBANS))) {
2575 send_reply(state->sptr, ERR_BANLISTFULL, state->chptr->chname,
2576 ban->value.ban.banstr);
2580 MyFree(ban->value.ban.banstr);
2582 /* add the ban to the buffer */
2583 modebuf_mode_string(state->mbuf, MODE_ADD | MODE_BAN,
2584 ban->value.ban.banstr,
2585 !(state->flags & MODE_PARSE_SET));
2587 if (state->flags & MODE_PARSE_SET) { /* create a new ban */
2588 newban = make_link();
2589 newban->value.ban.banstr = ban->value.ban.banstr;
2590 DupString(newban->value.ban.who, ban->value.ban.who);
2591 newban->value.ban.when = ban->value.ban.when;
2592 newban->flags = ban->flags & (CHFL_BAN | CHFL_BAN_IPMASK);
2594 newban->next = state->chptr->banlist; /* and link it in */
2595 state->chptr->banlist = newban;
2604 } /* for (prevban = 0, ban = state->chptr->banlist; ban; ban = nextban) { */
2606 if (changed) /* if we changed the ban list, we must invalidate the bans */
2607 mode_ban_invalidate(state->chptr);
2611 * Helper function to process client changes
2614 mode_parse_client(struct ParseState *state, int *flag_p)
2617 struct Client *acptr;
2620 if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
2623 if (state->parc <= 0) /* return if not enough args */
2626 t_str = state->parv[state->args_used++]; /* grab arg */
2630 /* If they're not an oper, they can't change modes */
2631 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2632 send_notoper(state);
2636 if (MyUser(state->sptr)) /* find client we're manipulating */
2637 acptr = find_chasing(state->sptr, t_str, NULL);
2639 acptr = findNUser(t_str);
2642 return; /* find_chasing() already reported an error to the user */
2644 for (i = 0; i < MAXPARA; i++) /* find an element to stick them in */
2645 if (!state->cli_change[i].flag || (state->cli_change[i].client == acptr &&
2646 state->cli_change[i].flag & flag_p[0]))
2647 break; /* found a slot */
2649 /* Store what we're doing to them */
2650 state->cli_change[i].flag = state->dir | flag_p[0];
2651 state->cli_change[i].client = acptr;
2655 * Helper function to process the changed client list
2658 mode_process_clients(struct ParseState *state)
2661 struct Membership *member;
2663 for (i = 0; state->cli_change[i].flag; i++) {
2664 assert(0 != state->cli_change[i].client);
2666 /* look up member link */
2667 if (!(member = find_member_link(state->chptr,
2668 state->cli_change[i].client)) ||
2669 (MyUser(state->sptr) && IsZombie(member))) {
2670 if (MyUser(state->sptr))
2671 send_reply(state->sptr, ERR_USERNOTINCHANNEL,
2672 cli_name(state->cli_change[i].client),
2673 state->chptr->chname);
2677 if ((state->cli_change[i].flag & MODE_ADD &&
2678 (state->cli_change[i].flag & member->status)) ||
2679 (state->cli_change[i].flag & MODE_DEL &&
2680 !(state->cli_change[i].flag & member->status)))
2681 continue; /* no change made, don't do anything */
2683 /* see if the deop is allowed */
2684 if ((state->cli_change[i].flag & (MODE_DEL | MODE_CHANOP)) ==
2685 (MODE_DEL | MODE_CHANOP)) {
2686 /* prevent +k users from being deopped */
2687 if (IsChannelService(state->cli_change[i].client)) {
2688 if (state->flags & MODE_PARSE_FORCE) /* it was forced */
2689 sendto_opmask_butone(0, SNO_HACK4, "Deop of +k user on %H by %s",
2691 (IsServer(state->sptr) ? cli_name(state->sptr) :
2692 cli_name((cli_user(state->sptr))->server)));
2694 else if (MyUser(state->sptr) && state->flags & MODE_PARSE_SET) {
2695 send_reply(state->sptr, ERR_ISCHANSERVICE,
2696 cli_name(state->cli_change[i].client),
2697 state->chptr->chname);
2702 /* check deop for local user */
2703 if (MyUser(state->sptr)) {
2705 /* don't allow local opers to be deopped on local channels */
2706 if (state->cli_change[i].client != state->sptr &&
2707 IsLocalChannel(state->chptr->chname) &&
2708 HasPriv(state->cli_change[i].client, PRIV_DEOP_LCHAN)) {
2709 send_reply(state->sptr, ERR_ISOPERLCHAN,
2710 cli_name(state->cli_change[i].client),
2711 state->chptr->chname);
2715 /* don't allow to deop members with an op level that is <= our own level */
2716 if (state->sptr != state->cli_change[i].client /* but allow to deop oneself */
2718 && OpLevel(member) <= OpLevel(state->member)) {
2719 int equal = (OpLevel(member) == OpLevel(state->member));
2720 send_reply(state->sptr, ERR_NOTLOWEROPLEVEL,
2721 cli_name(state->cli_change[i].client),
2722 state->chptr->chname,
2723 OpLevel(state->member), OpLevel(member),
2724 "deop", equal ? "the same" : "a higher");
2730 /* set op-level of member being opped */
2731 if ((state->cli_change[i].flag & (MODE_ADD | MODE_CHANOP)) ==
2732 (MODE_ADD | MODE_CHANOP)) {
2733 int old_level = (state->member == NULL) ? -1 : OpLevel(state->member);
2734 SetOpLevel(member, old_level == MAXOPLEVEL ? MAXOPLEVEL : (old_level + 1));
2737 /* accumulate the change */
2738 modebuf_mode_client(state->mbuf, state->cli_change[i].flag,
2739 state->cli_change[i].client);
2741 /* actually effect the change */
2742 if (state->flags & MODE_PARSE_SET) {
2743 if (state->cli_change[i].flag & MODE_ADD) {
2744 member->status |= (state->cli_change[i].flag &
2745 (MODE_CHANOP | MODE_VOICE));
2746 if (state->cli_change[i].flag & MODE_CHANOP)
2747 ClearDeopped(member);
2749 member->status &= ~(state->cli_change[i].flag &
2750 (MODE_CHANOP | MODE_VOICE));
2752 } /* for (i = 0; state->cli_change[i].flags; i++) */
2756 * Helper function to process the simple modes
2759 mode_parse_mode(struct ParseState *state, int *flag_p)
2761 /* If they're not an oper, they can't change modes */
2762 if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
2763 send_notoper(state);
2770 if (state->dir == MODE_ADD) {
2771 state->add |= flag_p[0];
2772 state->del &= ~flag_p[0];
2774 if (flag_p[0] & MODE_SECRET) {
2775 state->add &= ~MODE_PRIVATE;
2776 state->del |= MODE_PRIVATE;
2777 } else if (flag_p[0] & MODE_PRIVATE) {
2778 state->add &= ~MODE_SECRET;
2779 state->del |= MODE_SECRET;
2782 state->add &= ~flag_p[0];
2783 state->del |= flag_p[0];
2786 assert(0 == (state->add & state->del));
2787 assert((MODE_SECRET | MODE_PRIVATE) !=
2788 (state->add & (MODE_SECRET | MODE_PRIVATE)));
2792 * This routine is intended to parse MODE or OPMODE commands and effect the
2793 * changes (or just build the bounce buffer). We pass the starting offset
2797 mode_parse(struct ModeBuf *mbuf, struct Client *cptr, struct Client *sptr,
2798 struct Channel *chptr, int parc, char *parv[], unsigned int flags,
2799 struct Membership* member)
2801 static int chan_flags[] = {
2806 MODE_MODERATED, 'm',
2807 MODE_TOPICLIMIT, 't',
2808 MODE_INVITEONLY, 'i',
2809 MODE_NOPRIVMSGS, 'n',
2822 unsigned int t_mode;
2824 struct ParseState state;
2835 state.chptr = chptr;
2836 state.member = member;
2839 state.flags = flags;
2840 state.dir = MODE_ADD;
2844 state.args_used = 0;
2845 state.max_args = MAXMODEPARAMS;
2848 for (i = 0; i < MAXPARA; i++) { /* initialize ops/voices arrays */
2849 state.banlist[i].next = 0;
2850 state.banlist[i].value.ban.banstr = 0;
2851 state.banlist[i].value.ban.who = 0;
2852 state.banlist[i].value.ban.when = 0;
2853 state.banlist[i].flags = 0;
2854 state.cli_change[i].flag = 0;
2855 state.cli_change[i].client = 0;
2858 modestr = state.parv[state.args_used++];
2862 for (; *modestr; modestr++) {
2863 for (flag_p = chan_flags; flag_p[0]; flag_p += 2) /* look up flag */
2864 if (flag_p[1] == *modestr)
2867 if (!flag_p[0]) { /* didn't find it? complain and continue */
2868 if (MyUser(state.sptr))
2869 send_reply(state.sptr, ERR_UNKNOWNMODE, *modestr);
2874 case '+': /* switch direction to MODE_ADD */
2875 case '-': /* switch direction to MODE_DEL */
2876 state.dir = flag_p[0];
2879 case 'l': /* deal with limits */
2880 mode_parse_limit(&state, flag_p);
2883 case 'k': /* deal with keys */
2884 mode_parse_key(&state, flag_p);
2887 case 'A': /* deal with Admin passes */
2888 mode_parse_apass(&state, flag_p);
2891 case 'u': /* deal with user passes */
2892 mode_parse_upass(&state, flag_p);
2895 case 'b': /* deal with bans */
2896 mode_parse_ban(&state, flag_p);
2899 case 'o': /* deal with ops/voice */
2901 mode_parse_client(&state, flag_p);
2904 default: /* deal with other modes */
2905 mode_parse_mode(&state, flag_p);
2907 } /* switch (*modestr) */
2908 } /* for (; *modestr; modestr++) */
2910 if (state.flags & MODE_PARSE_BURST)
2911 break; /* don't interpret any more arguments */
2913 if (state.parc > 0) { /* process next argument in string */
2914 modestr = state.parv[state.args_used++];
2918 if (IsServer(state.sptr) && !state.parc && IsDigit(*modestr)) {
2921 if (!(state.flags & MODE_PARSE_SET)) /* don't set earlier TS if */
2922 break; /* we're then going to bounce the mode! */
2924 recv_ts = atoi(modestr);
2926 if (recv_ts && recv_ts < state.chptr->creationtime)
2927 state.chptr->creationtime = recv_ts; /* respect earlier TS */
2929 break; /* break out of while loop */
2930 } else if (state.flags & MODE_PARSE_STRICT ||
2931 (MyUser(state.sptr) && state.max_args <= 0)) {
2932 state.parc++; /* we didn't actually gobble the argument */
2934 break; /* break out of while loop */
2937 } /* while (*modestr) */
2940 * the rest of the function finishes building resultant MODEs; if the
2941 * origin isn't a member or an oper, skip it.
2943 if (!state.mbuf || state.flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER))
2944 return state.args_used; /* tell our parent how many args we gobbled */
2946 t_mode = state.chptr->mode.mode;
2948 if (state.del & t_mode) { /* delete any modes to be deleted... */
2949 modebuf_mode(state.mbuf, MODE_DEL | (state.del & t_mode));
2951 t_mode &= ~state.del;
2953 if (state.add & ~t_mode) { /* add any modes to be added... */
2954 modebuf_mode(state.mbuf, MODE_ADD | (state.add & ~t_mode));
2956 t_mode |= state.add;
2959 if (state.flags & MODE_PARSE_SET) { /* set the channel modes */
2960 if ((state.chptr->mode.mode & MODE_INVITEONLY) &&
2961 !(t_mode & MODE_INVITEONLY))
2962 mode_invite_clear(state.chptr);
2964 state.chptr->mode.mode = t_mode;
2967 if (state.flags & MODE_PARSE_WIPEOUT) {
2968 if (state.chptr->mode.limit && !(state.done & DONE_LIMIT))
2969 modebuf_mode_uint(state.mbuf, MODE_DEL | MODE_LIMIT,
2970 state.chptr->mode.limit);
2971 if (*state.chptr->mode.key && !(state.done & DONE_KEY))
2972 modebuf_mode_string(state.mbuf, MODE_DEL | MODE_KEY,
2973 state.chptr->mode.key, 0);
2974 if (*state.chptr->mode.upass && !(state.done & DONE_UPASS))
2975 modebuf_mode_string(state.mbuf, MODE_DEL | MODE_UPASS,
2976 state.chptr->mode.upass, 0);
2977 if (*state.chptr->mode.apass && !(state.done & DONE_APASS))
2978 modebuf_mode_string(state.mbuf, MODE_DEL | MODE_APASS,
2979 state.chptr->mode.apass, 0);
2982 if (state.done & DONE_BANCLEAN) /* process bans */
2983 mode_process_bans(&state);
2985 /* process client changes */
2986 if (state.cli_change[0].flag)
2987 mode_process_clients(&state);
2989 return state.args_used; /* tell our parent how many args we gobbled */
2993 * Initialize a join buffer
2996 joinbuf_init(struct JoinBuf *jbuf, struct Client *source,
2997 struct Client *connect, unsigned int type, char *comment,
3003 assert(0 != source);
3004 assert(0 != connect);
3006 jbuf->jb_source = source; /* just initialize struct JoinBuf */
3007 jbuf->jb_connect = connect;
3008 jbuf->jb_type = type;
3009 jbuf->jb_comment = comment;
3010 jbuf->jb_create = create;
3012 jbuf->jb_strlen = (((type == JOINBUF_TYPE_JOIN ||
3013 type == JOINBUF_TYPE_PART ||
3014 type == JOINBUF_TYPE_PARTALL) ?
3015 STARTJOINLEN : STARTCREATELEN) +
3016 (comment ? strlen(comment) + 2 : 0));
3018 for (i = 0; i < MAXJOINARGS; i++)
3019 jbuf->jb_channels[i] = 0;
3023 * Add a channel to the join buffer
3026 joinbuf_join(struct JoinBuf *jbuf, struct Channel *chan, unsigned int flags)
3033 if (jbuf->jb_type == JOINBUF_TYPE_JOIN)
3034 sendcmdto_serv_butone(jbuf->jb_source, CMD_JOIN, jbuf->jb_connect, "0");
3039 if (jbuf->jb_type == JOINBUF_TYPE_PART ||
3040 jbuf->jb_type == JOINBUF_TYPE_PARTALL) {
3041 /* Send notification to channel */
3042 if (!(flags & CHFL_ZOMBIE))
3043 sendcmdto_channel_butserv_butone(jbuf->jb_source, CMD_PART, chan, NULL,
3044 (flags & CHFL_BANNED || !jbuf->jb_comment) ?
3045 ":%H" : "%H :%s", chan, jbuf->jb_comment);
3046 else if (MyUser(jbuf->jb_source))
3047 sendcmdto_one(jbuf->jb_source, CMD_PART, jbuf->jb_source,
3048 (flags & CHFL_BANNED || !jbuf->jb_comment) ?
3049 ":%H" : "%H :%s", chan, jbuf->jb_comment);
3050 /* XXX: Shouldn't we send a PART here anyway? */
3051 /* to users on the channel? Why? From their POV, the user isn't on
3052 * the channel anymore anyway. We don't send to servers until below,
3053 * when we gang all the channel parts together. Note that this is
3054 * exactly the same logic, albeit somewhat more concise, as was in
3055 * the original m_part.c */
3057 if (jbuf->jb_type == JOINBUF_TYPE_PARTALL ||
3058 IsLocalChannel(chan->chname)) /* got to remove user here */
3059 remove_user_from_channel(jbuf->jb_source, chan);
3061 /* Add user to channel */
3062 add_user_to_channel(chan, jbuf->jb_source, flags, 0);
3064 /* send notification to all servers */
3065 if (jbuf->jb_type != JOINBUF_TYPE_CREATE && !IsLocalChannel(chan->chname))
3066 sendcmdto_serv_butone(jbuf->jb_source, CMD_JOIN, jbuf->jb_connect,
3067 "%H %Tu", chan, chan->creationtime);
3069 /* Send the notification to the channel */
3070 sendcmdto_channel_butserv_butone(jbuf->jb_source, CMD_JOIN, chan, NULL, ":%H", chan);
3072 /* send an op, too, if needed */
3073 if (!MyUser(jbuf->jb_source) && jbuf->jb_type == JOINBUF_TYPE_CREATE &&
3074 !IsModelessChannel(chan->chname))
3075 sendcmdto_channel_butserv_butone(jbuf->jb_source, CMD_MODE, chan, NULL, "%H +o %C",
3076 chan, jbuf->jb_source);
3079 if (jbuf->jb_type == JOINBUF_TYPE_PARTALL || IsLocalChannel(chan->chname))
3080 return; /* don't send to remote */
3082 /* figure out if channel name will cause buffer to be overflowed */
3083 len = chan ? strlen(chan->chname) + 1 : 2;
3084 if (jbuf->jb_strlen + len > BUFSIZE)
3085 joinbuf_flush(jbuf);
3087 /* add channel to list of channels to send and update counts */
3088 jbuf->jb_channels[jbuf->jb_count++] = chan;
3089 jbuf->jb_strlen += len;
3091 /* if we've used up all slots, flush */
3092 if (jbuf->jb_count >= MAXJOINARGS)
3093 joinbuf_flush(jbuf);
3097 * Flush the channel list to remote servers
3100 joinbuf_flush(struct JoinBuf *jbuf)
3102 char chanlist[BUFSIZE];
3106 if (!jbuf->jb_count || jbuf->jb_type == JOINBUF_TYPE_PARTALL ||
3107 jbuf->jb_type == JOINBUF_TYPE_JOIN)
3108 return 0; /* no joins to process */
3110 for (i = 0; i < jbuf->jb_count; i++) { /* build channel list */
3111 build_string(chanlist, &chanlist_i,
3112 jbuf->jb_channels[i] ? jbuf->jb_channels[i]->chname : "0", 0,
3113 i == 0 ? '\0' : ',');
3114 if (JOINBUF_TYPE_PART == jbuf->jb_type)
3115 /* Remove user from channel */
3116 remove_user_from_channel(jbuf->jb_source, jbuf->jb_channels[i]);
3118 jbuf->jb_channels[i] = 0; /* mark slot empty */
3121 jbuf->jb_count = 0; /* reset base counters */
3122 jbuf->jb_strlen = ((jbuf->jb_type == JOINBUF_TYPE_PART ?
3123 STARTJOINLEN : STARTCREATELEN) +
3124 (jbuf->jb_comment ? strlen(jbuf->jb_comment) + 2 : 0));
3126 /* and send the appropriate command */
3127 switch (jbuf->jb_type) {
3128 case JOINBUF_TYPE_CREATE:
3129 sendcmdto_serv_butone(jbuf->jb_source, CMD_CREATE, jbuf->jb_connect,
3130 "%s %Tu", chanlist, jbuf->jb_create);
3133 case JOINBUF_TYPE_PART:
3134 sendcmdto_serv_butone(jbuf->jb_source, CMD_PART, jbuf->jb_connect,
3135 jbuf->jb_comment ? "%s :%s" : "%s", chanlist,