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/* modules/m_tburst.c |
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* Copyright (C) 2002, 2003, 2004, 2005 Hybrid Development Team |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* 1.Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* 2.Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3.The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "client.h" |
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#include "ircd.h" |
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#include "send.h" |
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#include "modules.h" |
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#include "hash.h" |
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#include "s_serv.h" |
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#include "conf.h" |
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#include "parse.h" |
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|
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|
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/* ms_tburst() |
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* |
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* parv[0] = sender prefix |
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* parv[1] = channel timestamp |
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* parv[2] = channel |
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* parv[3] = topic timestamp |
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* parv[4] = topic setter |
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* parv[5] = topic |
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*/ |
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static void |
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ms_tburst(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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struct Channel *chptr = NULL; |
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int accept_remote = 0; |
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time_t remote_channel_ts = atol(parv[1]); |
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time_t remote_topic_ts = atol(parv[3]); |
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const char *topic = parv[5]; |
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const char *setby = parv[4]; |
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|
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/* |
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* Do NOT test parv[5] for an empty string and return if true! |
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* parv[5] CAN be an empty string, i.e. if the other side wants |
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* to unset our topic. Don't forget: an empty topic is also a |
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* valid topic. |
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*/ |
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|
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|
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if ((chptr = hash_find_channel(parv[2])) == NULL) |
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return; |
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|
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/* |
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* The logic for accepting and rejecting channel topics was |
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* always a bit hairy, so now we got exactly 2 cases where |
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* we would accept a bursted topic |
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* |
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* Case 1: |
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* The TS of the remote channel is older than ours |
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* Case 2: |
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* The TS of the remote channel is equal to ours AND |
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* the TS of the remote topic is newer than ours |
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*/ |
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if (HasFlag(source_p, FLAGS_SERVICE)) |
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accept_remote = 1; |
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else if (remote_channel_ts < chptr->channelts) |
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accept_remote = 1; |
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else if (remote_channel_ts == chptr->channelts) |
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if (remote_topic_ts > chptr->topic_time) |
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accept_remote = 1; |
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|
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if (accept_remote) |
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{ |
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int topic_differs = strncmp(chptr->topic, topic, sizeof(chptr->topic) - 1); |
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|
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set_channel_topic(chptr, topic, setby, remote_topic_ts); |
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|
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if (topic_differs) |
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sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s TOPIC %s :%s", |
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ConfigServerHide.hide_servers ? me.name : source_p->name, |
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chptr->chname, chptr->topic); |
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} |
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|
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/* |
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* Always propagate what we have received, not only if we accept the topic. |
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* This will keep other servers in sync. |
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*/ |
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sendto_server(source_p, CAP_TBURST|CAP_TS6, NOCAPS, |
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":%s TBURST %s %s %s %s :%s", |
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ID(source_p), parv[1], parv[2], parv[3], setby, topic); |
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sendto_server(source_p, CAP_TBURST, CAP_TS6, |
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":%s TBURST %s %s %s %s :%s", |
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source_p->name, parv[1], parv[2], parv[3], setby, topic); |
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} |
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|
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static struct Message tburst_msgtab = { |
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"TBURST", 0, 0, 6, MAXPARA, MFLG_SLOW, 0, |
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{ m_ignore, m_ignore, ms_tburst, m_ignore, m_ignore, m_ignore } |
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}; |
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|
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static void |
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module_init(void) |
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{ |
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mod_add_cmd(&tburst_msgtab); |
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add_capability("TBURST", CAP_TBURST, 1); |
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} |
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|
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static void |
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module_exit(void) |
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{ |
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mod_del_cmd(&tburst_msgtab); |
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delete_capability("TBURST"); |
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} |
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|
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struct module module_entry = { |
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.node = { NULL, NULL, NULL }, |
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.name = NULL, |
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.version = "$Revision$", |
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.handle = NULL, |
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.modinit = module_init, |
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.modexit = module_exit, |
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.flags = 0 |
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}; |
