/* * IRC - Internet Relay Chat, ircd/m_topic.c * Copyright (C) 1990 Jarkko Oikarinen and * University of Oulu, Computing Center * * See file AUTHORS in IRC package for additional names of * the programmers. * * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. * * $Id: m_topic.c,v 1.9.2.2 2002/12/15 01:02:42 isomer Exp $ */ /* * m_functions execute protocol messages on this server: * * cptr is always NON-NULL, pointing to a *LOCAL* client * structure (with an open socket connected!). This * identifies the physical socket where the message * originated (or which caused the m_function to be * executed--some m_functions may call others...). * * sptr is the source of the message, defined by the * prefix part of the message if present. If not * or prefix not found, then sptr==cptr. * * (!IsServer(cptr)) => (cptr == sptr), because * prefixes are taken *only* from servers... * * (IsServer(cptr)) * (sptr == cptr) => the message didn't * have the prefix. * * (sptr != cptr && IsServer(sptr) means * the prefix specified servername. (?) * * (sptr != cptr && !IsServer(sptr) means * that message originated from a remote * user (not local). * * combining * * (!IsServer(sptr)) means that, sptr can safely * taken as defining the target structure of the * message in this server. * * *Always* true (if 'parse' and others are working correct): * * 1) sptr->from == cptr (note: cptr->from == cptr) * * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr * *cannot* be a local connection, unless it's * actually cptr!). [MyConnect(x) should probably * be defined as (x == x->from) --msa ] * * parc number of variable parameter strings (if zero, * parv is allowed to be NULL) * * parv a NULL terminated list of parameter pointers, * * parv[0], sender (prefix string), if not present * this points to an empty string. * parv[1]...parv[parc-1] * pointers to additional parameters * parv[parc] == NULL, *always* * * note: it is guaranteed that parv[0]..parv[parc-1] are all * non-NULL pointers. */ #include "config.h" #include "channel.h" #include "client.h" #include "hash.h" #include "ircd.h" #include "ircd_reply.h" #include "ircd_string.h" #include "msg.h" #include "numeric.h" #include "numnicks.h" #include "send.h" #include static void do_settopic(struct Client *sptr, struct Client *cptr, struct Channel *chptr,char *topic) { int newtopic; /* if +n and not @'d, return an error and ignore the topic */ if ((chptr->mode.mode & MODE_TOPICLIMIT) != 0 && !is_chan_op(sptr, chptr)) { send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname); return; } /* Note if this is just a refresh of an old topic, and don't * send it to all the clients to save bandwidth. We still send * it to other servers as they may have split and lost the topic. */ newtopic=ircd_strncmp(chptr->topic,topic,TOPICLEN)!=0; /* setting a topic */ ircd_strncpy(chptr->topic, topic, TOPICLEN); ircd_strncpy(chptr->topic_nick, cli_name(sptr), NICKLEN); chptr->topic_time = CurrentTime; /* Fixed in 2.10.11: Don't propergate local topics */ if (!IsLocalChannel(chptr->chname)) sendcmdto_serv_butone(sptr, CMD_TOPIC, cptr, "%H :%s", chptr, chptr->topic); if (newtopic) sendcmdto_channel_butserv_butone(sptr, CMD_TOPIC, chptr, NULL, "%H :%s", chptr, chptr->topic); /* if this is the same topic as before we send it to the person that * set it (so they knew it went through ok), but don't bother sending * it to everyone else on the channel to save bandwidth */ else if (MyUser(sptr)) sendcmdto_one(sptr, CMD_TOPIC, sptr, "%H :%s", chptr, chptr->topic); } /* * m_topic - generic message handler * * parv[0] = sender prefix * parv[1] = channel * parv[parc - 1] = topic (if parc > 2) */ int m_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) { struct Channel *chptr; char *topic = 0, *name, *p = 0; if (parc < 2) return need_more_params(sptr, "TOPIC"); if (parc > 2) topic = parv[parc - 1]; for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0) { chptr = 0; /* Does the channel exist */ if (!IsChannelName(name) || !(chptr = FindChannel(name))) { send_reply(sptr,ERR_NOSUCHCHANNEL,name); continue; } /* Trying to check a topic outside a secret channel */ if ((topic || SecretChannel(chptr)) && !find_channel_member(sptr, chptr)) { send_reply(sptr, ERR_NOTONCHANNEL, chptr->chname); continue; } if (!topic) /* only asking for topic */ { if (chptr->topic[0] == '\0') send_reply(sptr, RPL_NOTOPIC, chptr->chname); else { send_reply(sptr, RPL_TOPIC, chptr->chname, chptr->topic); send_reply(sptr, RPL_TOPICWHOTIME, chptr->chname, chptr->topic_nick, chptr->topic_time); } } else do_settopic(sptr,cptr,chptr,topic); } return 0; } /* * ms_topic - generic message handler * * parv[0] = sender prefix * parv[1] = channel * parv[parc - 1] = topic */ int ms_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) { struct Channel *chptr; char *topic = 0, *name, *p = 0; if (parc < 3) return need_more_params(sptr, "TOPIC"); topic = parv[parc - 1]; for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0) { chptr = 0; /* Does the channel exist */ if (!IsChannelName(name) || !(chptr = FindChannel(name))) { send_reply(sptr,ERR_NOSUCHCHANNEL,name); continue; } /* Ignore requests for topics from remote servers */ if (IsLocalChannel(name) && !MyUser(sptr)) { protocol_violation(sptr,"Topic request"); continue; } do_settopic(sptr,cptr,chptr,topic); } return 0; }