/* * ircd-ratbox: A slightly useful ircd. * m_join.c: Joins a channel. * * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center * Copyright (C) 1996-2002 Hybrid Development Team * Copyright (C) 2002-2005 ircd-ratbox development team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ using namespace ircd; static const char join_desc[] = "Provides the JOIN and TS6 SJOIN commands to facilitate joining and creating channels"; static void m_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **); static void ms_join(struct MsgBuf *, struct Client *, struct Client *, int, const char **); static void ms_sjoin(struct MsgBuf *, struct Client *, struct Client *, int, const char **); static int h_can_create_channel; static int h_channel_join; struct Message join_msgtab = { "JOIN", 0, 0, 0, 0, {mg_unreg, {m_join, 2}, {ms_join, 2}, mg_ignore, mg_ignore, {m_join, 2}} }; struct Message sjoin_msgtab = { "SJOIN", 0, 0, 0, 0, {mg_unreg, mg_ignore, mg_ignore, {ms_sjoin, 4}, mg_ignore, mg_ignore} }; mapi_clist_av1 join_clist[] = { &join_msgtab, &sjoin_msgtab, NULL }; mapi_hlist_av1 join_hlist[] = { { "can_create_channel", &h_can_create_channel }, { "channel_join", &h_channel_join }, { NULL, NULL }, }; DECLARE_MODULE_AV2(join, NULL, NULL, join_clist, join_hlist, NULL, NULL, NULL, join_desc); static void do_join_0(struct Client *client_p, struct Client *source_p); static bool check_channel_name_loc(struct Client *source_p, const char *name); static void send_join_error(struct Client *source_p, int numeric, const char *name); static void set_final_mode(struct Mode *mode, struct Mode *oldmode); static void remove_our_modes(struct Channel *chptr, struct Client *source_p); static void remove_ban_list(struct Channel *chptr, struct Client *source_p, rb_dlink_list * list, char c, int mems); static char modebuf[MODEBUFLEN]; static char parabuf[MODEBUFLEN]; static const char *para[MAXMODEPARAMS]; static char *mbuf; static int pargs; /* Check what we will forward to, without sending any notices to the user * -- jilles */ static struct Channel * check_forward(struct Client *source_p, struct Channel *chptr, char *key, int *err) { int depth = 0, i; const char *next = NULL; /* The caller (m_join) is only interested in the reason * for the original channel. */ if ((*err = can_join(source_p, chptr, key, &next)) == 0) return chptr; /* User is +Q, or forwarding disabled */ if (IsNoForward(source_p) || !ConfigChannel.use_forward) return NULL; while (depth < 16) { if (next == NULL) return NULL; chptr = find_channel(next); /* Can only forward to existing channels */ if (chptr == NULL) return NULL; /* Already on there... but don't send the original reason for * being unable to join. It isn't their fault they're already * on the channel, and it looks hostile otherwise. * --Elizafox */ if (IsMember(source_p, chptr)) { *err = ERR_USERONCHANNEL; /* I'm borrowing this for now. --Elizafox */ return NULL; } /* Juped. Sending a warning notice would be unfair */ if (hash_find_resv(chptr->chname)) return NULL; /* Don't forward to +Q channel */ if (chptr->mode.mode & MODE_DISFORWARD) return NULL; i = can_join(source_p, chptr, key, &next); if (i == 0) return chptr; depth++; } return NULL; } /* * m_join * parv[1] = channel * parv[2] = channel password (key) */ static void m_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { static char jbuf[BUFSIZE]; struct Channel *chptr = NULL, *chptr2 = NULL; struct ConfItem *aconf; char *name; char *key = NULL; const char *modes; int i, flags = 0; char *p = NULL, *p2 = NULL; char *chanlist; char *mykey; jbuf[0] = '\0'; /* rebuild the list of channels theyre supposed to be joining. * this code has a side effect of losing keys, but.. */ chanlist = LOCAL_COPY(parv[1]); for(name = rb_strtok_r(chanlist, ",", &p); name; name = rb_strtok_r(NULL, ",", &p)) { /* check the length and name of channel is ok */ if(!check_channel_name_loc(source_p, name) || (strlen(name) > LOC_CHANNELLEN)) { sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), (unsigned char *) name); continue; } /* join 0 parts all channels */ if(*name == '0' && (name[1] == ',' || name[1] == '\0') && name == chanlist) { rb_strlcpy(jbuf, "0", sizeof(jbuf)); continue; } /* check it begins with # or &, and local chans are disabled */ else if(!IsChannelName(name) || ( ConfigChannel.disable_local_channels && name[0] == '&')) { sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name); continue; } /* see if its resv'd */ if(!IsExemptResv(source_p) && (aconf = hash_find_resv(name))) { sendto_one_numeric(source_p, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), name); /* dont warn for opers */ if(!IsExemptJupe(source_p) && !IsOper(source_p)) sendto_realops_snomask(SNO_SPY, L_NETWIDE, "User %s (%s@%s) is attempting to join locally juped channel %s (%s)", source_p->name, source_p->username, source_p->orighost, name, aconf->passwd); /* dont update tracking for jupe exempt users, these * are likely to be spamtrap leaves */ else if(IsExemptJupe(source_p)) aconf->port--; continue; } if(splitmode && !IsOper(source_p) && (*name != '&') && ConfigChannel.no_join_on_split) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; } if(*jbuf) (void) strcat(jbuf, ","); (void) rb_strlcat(jbuf, name, sizeof(jbuf)); } if(parc > 2) { mykey = LOCAL_COPY(parv[2]); key = rb_strtok_r(mykey, ",", &p2); } for(name = rb_strtok_r(jbuf, ",", &p); name; key = (key) ? rb_strtok_r(NULL, ",", &p2) : NULL, name = rb_strtok_r(NULL, ",", &p)) { hook_data_channel_activity hook_info; /* JOIN 0 simply parts all channels the user is in */ if(*name == '0' && !atoi(name)) { if(source_p->user->channel.head == NULL) continue; do_join_0(&me, source_p); continue; } /* look for the channel */ if((chptr = find_channel(name)) != NULL) { if(IsMember(source_p, chptr)) continue; flags = 0; } else { hook_data_client_approval moduledata; moduledata.client = source_p; moduledata.approved = 0; call_hook(h_can_create_channel, &moduledata); if(moduledata.approved != 0) { if(moduledata.approved != ERR_CUSTOM) send_join_error(source_p, moduledata.approved, name); continue; } if(splitmode && !IsOper(source_p) && (*name != '&') && ConfigChannel.no_create_on_split) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; } flags = CHFL_CHANOP; } if((rb_dlink_list_length(&source_p->user->channel) >= (unsigned long) ConfigChannel.max_chans_per_user) && (!IsExtendChans(source_p) || (rb_dlink_list_length(&source_p->user->channel) >= (unsigned long) ConfigChannel.max_chans_per_user_large))) { sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS), me.name, source_p->name, name); continue; } if(chptr == NULL) /* If I already have a chptr, no point doing this */ { chptr = get_or_create_channel(source_p, name, NULL); if(chptr == NULL) { sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), me.name, source_p->name, name); continue; } } /* If check_forward returns NULL, they couldn't join and there wasn't a usable forward channel. */ if((chptr2 = check_forward(source_p, chptr, key, &i)) == NULL) { /* might be wrong, but is there any other better location for such? * see extensions/chm_operonly.c for other comments on this * -- dwr */ if(i != ERR_CUSTOM) send_join_error(source_p, i, name); continue; } else if(chptr != chptr2) sendto_one_numeric(source_p, ERR_LINKCHANNEL, form_str(ERR_LINKCHANNEL), name, chptr2->chname); chptr = chptr2; if(flags == 0 && !IsOper(source_p) && !IsExemptSpambot(source_p)) check_spambot_warning(source_p, name); /* add the user to the channel */ add_user_to_channel(chptr, source_p, flags); if (chptr->mode.join_num && rb_current_time() - chptr->join_delta >= chptr->mode.join_time) { chptr->join_count = 0; chptr->join_delta = rb_current_time(); } chptr->join_count++; /* credit user for join */ credit_client_join(source_p); /* we send the user their join here, because we could have to * send a mode out next. */ send_channel_join(chptr, source_p); /* its a new channel, set +nt and burst. */ if(flags & CHFL_CHANOP) { chptr->channelts = rb_current_time(); chptr->mode.mode |= ConfigChannel.autochanmodes; modes = channel_modes(chptr, &me); sendto_channel_local(ONLY_CHANOPS, chptr, ":%s MODE %s %s", me.name, chptr->chname, modes); sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s SJOIN %ld %s %s :@%s", me.id, (long) chptr->channelts, chptr->chname, modes, source_p->id); } else { sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s JOIN %ld %s +", use_id(source_p), (long) chptr->channelts, chptr->chname); } del_invite(chptr, source_p); if(chptr->topic != NULL) { sendto_one(source_p, form_str(RPL_TOPIC), me.name, source_p->name, chptr->chname, chptr->topic); sendto_one(source_p, form_str(RPL_TOPICWHOTIME), me.name, source_p->name, chptr->chname, chptr->topic_info, (unsigned long)chptr->topic_time); } channel_member_names(chptr, source_p, 1); hook_info.client = source_p; hook_info.chptr = chptr; hook_info.key = key; call_hook(h_channel_join, &hook_info); } } /* * ms_join * parv[1] = channel TS * parv[2] = channel * parv[3] = "+", formerly channel modes but now unused * alternatively, a single "0" parameter parts all channels */ static void ms_join(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { struct Channel *chptr; static struct Mode mode; time_t oldts; time_t newts; bool isnew; bool keep_our_modes = true; rb_dlink_node *ptr, *next_ptr; /* special case for join 0 */ if((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2) { do_join_0(client_p, source_p); return; } if(parc < 4) return; if(!IsChannelName(parv[2]) || !check_channel_name(parv[2])) return; /* joins for local channels cant happen. */ if(parv[2][0] == '&') return; mbuf = modebuf; mode.key[0] = mode.forward[0] = '\0'; mode.mode = mode.limit = mode.join_num = mode.join_time = 0; if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) return; newts = atol(parv[1]); oldts = chptr->channelts; /* making a channel TS0 */ if(!isnew && !newts && oldts) { sendto_channel_local(ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to 0", me.name, chptr->chname, chptr->chname, (long) oldts); sendto_realops_snomask(SNO_GENERAL, L_ALL, "Server %s changing TS on %s from %ld to 0", source_p->name, chptr->chname, (long) oldts); } if(isnew) chptr->channelts = newts; else if(newts == 0 || oldts == 0) chptr->channelts = 0; else if(newts == oldts) ; else if(newts < oldts) { keep_our_modes = false; chptr->channelts = newts; } /* Lost the TS, other side wins, so remove modes on this side */ if(!keep_our_modes) { set_final_mode(&mode, &chptr->mode); chptr->mode = mode; remove_our_modes(chptr, source_p); RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) { del_invite(chptr, (Client *)ptr->data); } /* If setting -j, clear join throttle state -- jilles */ chptr->join_count = chptr->join_delta = 0; sendto_channel_local(ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld", me.name, chptr->chname, chptr->chname, (long) oldts, (long) newts); /* Update capitalization in channel name, this makes the * capitalization timestamped like modes are -- jilles */ strcpy(chptr->chname, parv[2]); if(*modebuf != '\0') sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s", source_p->servptr->name, chptr->chname, modebuf, parabuf); *modebuf = *parabuf = '\0'; /* since we're dropping our modes, we want to clear the mlock as well. --nenolod */ set_channel_mlock(client_p, source_p, chptr, NULL, false); } if(!IsMember(source_p, chptr)) { add_user_to_channel(chptr, source_p, CHFL_PEON); if (chptr->mode.join_num && rb_current_time() - chptr->join_delta >= chptr->mode.join_time) { chptr->join_count = 0; chptr->join_delta = rb_current_time(); } chptr->join_count++; send_channel_join(chptr, source_p); } sendto_server(client_p, chptr, CAP_TS6, NOCAPS, ":%s JOIN %ld %s +", source_p->id, (long) chptr->channelts, chptr->chname); } static void ms_sjoin(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { static char buf_uid[BUFSIZE]; static const char empty_modes[] = "0"; struct Channel *chptr; struct Client *target_p, *fakesource_p; time_t newts; time_t oldts; static struct Mode mode, *oldmode; const char *modes; int args = 0; bool keep_our_modes = true; bool keep_new_modes = true; int fl; bool isnew; int mlen_uid; int len_uid; int len; int joins = 0; const char *s; char *ptr_uid; char *p; int i, joinc = 0, timeslice = 0; static char empty[] = ""; rb_dlink_node *ptr, *next_ptr; if(parc < 5) return; if(!IsChannelName(parv[2]) || !check_channel_name(parv[2])) return; /* SJOIN's for local channels can't happen. */ if(*parv[2] == '&') return; modebuf[0] = parabuf[0] = mode.key[0] = mode.forward[0] = '\0'; pargs = mode.mode = mode.limit = mode.join_num = mode.join_time = 0; /* Hide connecting server on netburst -- jilles */ if (ConfigServerHide.flatten_links && !HasSentEob(source_p)) fakesource_p = &me; else fakesource_p = source_p; mbuf = modebuf; newts = atol(parv[1]); s = parv[3]; while (*s) { switch (*(s++)) { case 'f': rb_strlcpy(mode.forward, parv[4 + args], sizeof(mode.forward)); args++; if(parc < 5 + args) return; break; case 'j': sscanf(parv[4 + args], "%d:%d", &joinc, ×lice); args++; mode.join_num = joinc; mode.join_time = timeslice; if(parc < 5 + args) return; break; case 'k': rb_strlcpy(mode.key, parv[4 + args], sizeof(mode.key)); args++; if(parc < 5 + args) return; break; case 'l': mode.limit = atoi(parv[4 + args]); args++; if(parc < 5 + args) return; break; default: if(chmode_flags[(int) *s] != 0) { mode.mode |= chmode_flags[(int) *s]; } } } if(parv[args + 4]) { s = parv[args + 4]; /* remove any leading spaces */ while (*s == ' ') s++; } else s = ""; if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) return; /* channel name too long? */ oldts = chptr->channelts; oldmode = &chptr->mode; if(!isnew && !newts && oldts) { sendto_channel_local(ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s " "changed from %ld to 0", me.name, chptr->chname, chptr->chname, (long) oldts); sendto_realops_snomask(SNO_GENERAL, L_ALL, "Server %s changing TS on %s from %ld to 0", source_p->name, chptr->chname, (long) oldts); } if(isnew) chptr->channelts = newts; else if(newts == 0 || oldts == 0) chptr->channelts = 0; else if(newts == oldts) ; else if(newts < oldts) { /* If configured, kick people trying to join +i/+k * channels by recreating them on split servers. * If the source has sent EOB, assume this is some * sort of hack by services. If cmode +i is set, * services can send kicks if needed; if the key * differs, services cannot kick in a race-free * manner so do so here. * -- jilles */ if (ConfigChannel.kick_on_split_riding && ((!HasSentEob(source_p) && mode.mode & MODE_INVITEONLY) || (mode.key[0] != 0 && irccmp(mode.key, oldmode->key) != 0))) { struct membership *msptr; struct Client *who; int l = rb_dlink_list_length(&chptr->members); RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->locmembers.head) { msptr = (membership *)ptr->data; who = msptr->client_p; sendto_one(who, ":%s KICK %s %s :Net Rider", me.name, chptr->chname, who->name); sendto_server(NULL, chptr, CAP_TS6, NOCAPS, ":%s KICK %s %s :Net Rider", me.id, chptr->chname, who->id); remove_user_from_channel(msptr); if (--l == 0) break; } if (l == 0) { /* Channel was emptied, create a new one */ if((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL) return; /* oops! */ oldmode = &chptr->mode; } } keep_our_modes = false; chptr->channelts = newts; } else keep_new_modes = false; if(!keep_new_modes) mode = *oldmode; else if(keep_our_modes) { mode.mode |= oldmode->mode; if(oldmode->limit > mode.limit) mode.limit = oldmode->limit; if(strcmp(mode.key, oldmode->key) < 0) rb_strlcpy(mode.key, oldmode->key, sizeof(mode.key)); if(oldmode->join_num > mode.join_num || (oldmode->join_num == mode.join_num && oldmode->join_time > mode.join_time)) { mode.join_num = oldmode->join_num; mode.join_time = oldmode->join_time; } if(irccmp(mode.forward, oldmode->forward) < 0) rb_strlcpy(mode.forward, oldmode->forward, sizeof(mode.forward)); } else { /* If setting -j, clear join throttle state -- jilles */ if (!mode.join_num) chptr->join_count = chptr->join_delta = 0; } set_final_mode(&mode, oldmode); chptr->mode = mode; /* Lost the TS, other side wins, so remove modes on this side */ if(!keep_our_modes) { remove_our_modes(chptr, fakesource_p); RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->invites.head) { del_invite(chptr, (Client *)ptr->data); } if(rb_dlink_list_length(&chptr->banlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->banlist, 'b', ALL_MEMBERS); if(rb_dlink_list_length(&chptr->exceptlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->exceptlist, 'e', ONLY_CHANOPS); if(rb_dlink_list_length(&chptr->invexlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->invexlist, 'I', ONLY_CHANOPS); if(rb_dlink_list_length(&chptr->quietlist) > 0) remove_ban_list(chptr, fakesource_p, &chptr->quietlist, 'q', ALL_MEMBERS); chptr->bants++; sendto_channel_local(ALL_MEMBERS, chptr, ":%s NOTICE %s :*** Notice -- TS for %s changed from %ld to %ld", me.name, chptr->chname, chptr->chname, (long) oldts, (long) newts); /* Update capitalization in channel name, this makes the * capitalization timestamped like modes are -- jilles */ strcpy(chptr->chname, parv[2]); /* since we're dropping our modes, we want to clear the mlock as well. --nenolod */ set_channel_mlock(client_p, source_p, chptr, NULL, false); } if(*modebuf != '\0') sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s", fakesource_p->name, chptr->chname, modebuf, parabuf); *modebuf = *parabuf = '\0'; if(parv[3][0] != '0' && keep_new_modes) modes = channel_modes(chptr, source_p); else modes = empty_modes; mlen_uid = sprintf(buf_uid, ":%s SJOIN %ld %s %s :", use_id(source_p), (long) chptr->channelts, parv[2], modes); ptr_uid = buf_uid + mlen_uid; mbuf = modebuf; para[0] = para[1] = para[2] = para[3] = empty; pargs = 0; len_uid = 0; /* if theres a space, theres going to be more than one nick, change the * first space to \0, so s is just the first nick, and point p to the * second nick */ if((p = (char *)strchr(s, ' ')) != NULL) { *p++ = '\0'; } *mbuf++ = '+'; while (s) { fl = 0; for (i = 0; i < 2; i++) { if(*s == '@') { fl |= CHFL_CHANOP; s++; } else if(*s == '+') { fl |= CHFL_VOICE; s++; } } /* if the client doesnt exist or is fake direction, skip. */ if(!(target_p = find_client(s)) || (target_p->from != client_p) || !IsPerson(target_p)) goto nextnick; /* we assume for these we can fit at least one nick/uid in.. */ /* check we can fit another status+nick+space into a buffer */ if((mlen_uid + len_uid + IDLEN + 3) > (BUFSIZE - 3)) { *(ptr_uid - 1) = '\0'; sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid); ptr_uid = buf_uid + mlen_uid; len_uid = 0; } if(keep_new_modes) { if(fl & CHFL_CHANOP) { *ptr_uid++ = '@'; len_uid++; } if(fl & CHFL_VOICE) { *ptr_uid++ = '+'; len_uid++; } } /* copy the nick to the two buffers */ len = sprintf(ptr_uid, "%s ", use_id(target_p)); ptr_uid += len; len_uid += len; if(!keep_new_modes) fl = 0; if(!IsMember(target_p, chptr)) { add_user_to_channel(chptr, target_p, fl); send_channel_join(chptr, target_p); joins++; } if(fl & CHFL_CHANOP) { *mbuf++ = 'o'; para[pargs++] = target_p->name; /* a +ov user.. bleh */ if(fl & CHFL_VOICE) { /* its possible the +o has filled up MAXMODEPARAMS, if so, start * a new buffer */ if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; } *mbuf++ = 'v'; para[pargs++] = target_p->name; } } else if(fl & CHFL_VOICE) { *mbuf++ = 'v'; para[pargs++] = target_p->name; } if(pargs >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], para[1], para[2], para[3]); mbuf = modebuf; *mbuf++ = '+'; para[0] = para[1] = para[2] = para[3] = NULL; pargs = 0; } nextnick: /* p points to the next nick */ s = p; /* if there was a trailing space and p was pointing to it, then we * need to exit.. this has the side effect of breaking double spaces * in an sjoin.. but that shouldnt happen anyway */ if(s && (*s == '\0')) s = p = NULL; /* if p was NULL due to no spaces, s wont exist due to the above, so * we cant check it for spaces.. if there are no spaces, then when * we next get here, s will be NULL */ if(s && ((p = (char *)strchr(s, ' ')) != NULL)) { *p++ = '\0'; } } *mbuf = '\0'; if(pargs) { sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", fakesource_p->name, chptr->chname, modebuf, para[0], CheckEmpty(para[1]), CheckEmpty(para[2]), CheckEmpty(para[3])); } if(!joins && !(chptr->mode.mode & MODE_PERMANENT) && isnew) { destroy_channel(chptr); return; } /* Keep the colon if we're sending an SJOIN without nicks -- jilles */ if (joins) { *(ptr_uid - 1) = '\0'; } sendto_server(client_p->from, NULL, CAP_TS6, NOCAPS, "%s", buf_uid); } /* * do_join_0 * * inputs - pointer to client doing join 0 * output - NONE * side effects - Use has decided to join 0. This is legacy * from the days when channels were numbers not names. *sigh* */ static void do_join_0(struct Client *client_p, struct Client *source_p) { struct membership *msptr; struct Channel *chptr = NULL; rb_dlink_node *ptr; /* Finish the flood grace period... */ if(MyClient(source_p) && !IsFloodDone(source_p)) flood_endgrace(source_p); sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s JOIN 0", use_id(source_p)); while((ptr = source_p->user->channel.head)) { if(MyConnect(source_p) && !IsOper(source_p) && !IsExemptSpambot(source_p)) check_spambot_warning(source_p, NULL); msptr = (membership *)ptr->data; chptr = msptr->chptr; sendto_channel_local(ALL_MEMBERS, chptr, ":%s!%s@%s PART %s", source_p->name, source_p->username, source_p->host, chptr->chname); remove_user_from_channel(msptr); } } static bool check_channel_name_loc(struct Client *source_p, const char *name) { const char *p; s_assert(name != NULL); if(EmptyString(name)) return false; if(ConfigFileEntry.disable_fake_channels && !IsOper(source_p)) { for(p = name; *p; ++p) { if(!IsChanChar(*p) || IsFakeChanChar(*p)) return false; } } else { for(p = name; *p; ++p) { if(!IsChanChar(*p)) return false; } } if(ConfigChannel.only_ascii_channels) { for(p = name; *p; ++p) if(*p < 33 || *p > 126) return false; } return true; } /* send_join_error() * * input - client to send to, reason, channel name * output - none * side effects - error message sent to client */ static void send_join_error(struct Client *source_p, int numeric, const char *name) { /* This stuff is necessary because the form_str macro only * accepts constants. */ switch (numeric) { #define NORMAL_NUMERIC(i) \ case i: \ sendto_one(source_p, form_str(i), \ me.name, source_p->name, name); \ break NORMAL_NUMERIC(ERR_BANNEDFROMCHAN); NORMAL_NUMERIC(ERR_INVITEONLYCHAN); NORMAL_NUMERIC(ERR_BADCHANNELKEY); NORMAL_NUMERIC(ERR_CHANNELISFULL); NORMAL_NUMERIC(ERR_NEEDREGGEDNICK); NORMAL_NUMERIC(ERR_THROTTLE); default: sendto_one_numeric(source_p, numeric, "%s :Cannot join channel", name); break; } } static void set_final_mode(struct Mode *mode, struct Mode *oldmode) { int dir = MODE_QUERY; char *pbuf = parabuf; int len; int i; /* ok, first get a list of modes we need to add */ for (i = 0; i < 256; i++) { if((mode->mode & chmode_flags[i]) && !(oldmode->mode & chmode_flags[i])) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = i; } } /* now the ones we need to remove. */ for (i = 0; i < 256; i++) { if((oldmode->mode & chmode_flags[i]) && !(mode->mode & chmode_flags[i])) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = i; } } if(oldmode->limit && !mode->limit) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'l'; } if(oldmode->key[0] && !mode->key[0]) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'k'; len = sprintf(pbuf, "%s ", oldmode->key); pbuf += len; } if(oldmode->join_num && !mode->join_num) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'j'; } if(oldmode->forward[0] && !mode->forward[0]) { if(dir != MODE_DEL) { *mbuf++ = '-'; dir = MODE_DEL; } *mbuf++ = 'f'; } if(mode->limit && oldmode->limit != mode->limit) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'l'; len = sprintf(pbuf, "%d ", mode->limit); pbuf += len; } if(mode->key[0] && strcmp(oldmode->key, mode->key)) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'k'; len = sprintf(pbuf, "%s ", mode->key); pbuf += len; } if(mode->join_num && (oldmode->join_num != mode->join_num || oldmode->join_time != mode->join_time)) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'j'; len = sprintf(pbuf, "%d:%d ", mode->join_num, mode->join_time); pbuf += len; } if(mode->forward[0] && strcmp(oldmode->forward, mode->forward) && ConfigChannel.use_forward) { if(dir != MODE_ADD) { *mbuf++ = '+'; dir = MODE_ADD; } *mbuf++ = 'f'; len = sprintf(pbuf, "%s ", mode->forward); pbuf += len; } *mbuf = '\0'; } /* * remove_our_modes * * inputs - * output - * side effects - */ static void remove_our_modes(struct Channel *chptr, struct Client *source_p) { struct membership *msptr; rb_dlink_node *ptr; char lmodebuf[MODEBUFLEN]; char *lpara[MAXMODEPARAMS]; int count = 0; int i; mbuf = lmodebuf; *mbuf++ = '-'; for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; RB_DLINK_FOREACH(ptr, chptr->members.head) { msptr = (membership *)ptr->data; if(is_chanop(msptr)) { msptr->flags &= ~CHFL_CHANOP; lpara[count++] = msptr->client_p->name; *mbuf++ = 'o'; /* +ov, might not fit so check. */ if(is_voiced(msptr)) { if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]); /* preserve the initial '-' */ mbuf = lmodebuf; *mbuf++ = '-'; count = 0; for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; } msptr->flags &= ~CHFL_VOICE; lpara[count++] = msptr->client_p->name; *mbuf++ = 'v'; } } else if(is_voiced(msptr)) { msptr->flags &= ~CHFL_VOICE; lpara[count++] = msptr->client_p->name; *mbuf++ = 'v'; } else continue; if(count >= MAXMODEPARAMS) { *mbuf = '\0'; sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, lpara[0], lpara[1], lpara[2], lpara[3]); mbuf = lmodebuf; *mbuf++ = '-'; count = 0; for(i = 0; i < MAXMODEPARAMS; i++) lpara[i] = NULL; } } if(count != 0) { *mbuf = '\0'; sendto_channel_local(ALL_MEMBERS, chptr, ":%s MODE %s %s %s %s %s %s", source_p->name, chptr->chname, lmodebuf, EmptyString(lpara[0]) ? "" : lpara[0], EmptyString(lpara[1]) ? "" : lpara[1], EmptyString(lpara[2]) ? "" : lpara[2], EmptyString(lpara[3]) ? "" : lpara[3]); } } /* remove_ban_list() * * inputs - channel, source, list to remove, char of mode, caps needed * outputs - * side effects - given list is removed, with modes issued to local clients */ static void remove_ban_list(struct Channel *chptr, struct Client *source_p, rb_dlink_list * list, char c, int mems) { static char lmodebuf[BUFSIZE]; static char lparabuf[BUFSIZE]; struct Ban *banptr; rb_dlink_node *ptr; rb_dlink_node *next_ptr; char *pbuf; int count = 0; int cur_len, mlen, plen; pbuf = lparabuf; cur_len = mlen = sprintf(lmodebuf, ":%s MODE %s -", source_p->name, chptr->chname); mbuf = lmodebuf + mlen; RB_DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) { banptr = (Ban *)ptr->data; /* trailing space, and the mode letter itself */ plen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 2; if(count >= MAXMODEPARAMS || (cur_len + plen) > BUFSIZE - 4) { /* remove trailing space */ *mbuf = '\0'; *(pbuf - 1) = '\0'; sendto_channel_local(mems, chptr, "%s %s", lmodebuf, lparabuf); cur_len = mlen; mbuf = lmodebuf + mlen; pbuf = lparabuf; count = 0; } *mbuf++ = c; cur_len += plen; if (banptr->forward) pbuf += sprintf(pbuf, "%s$%s ", banptr->banstr, banptr->forward); else pbuf += sprintf(pbuf, "%s ", banptr->banstr); count++; free_ban(banptr); } *mbuf = '\0'; *(pbuf - 1) = '\0'; sendto_channel_local(mems, chptr, "%s %s", lmodebuf, lparabuf); list->head = list->tail = NULL; list->length = 0; }