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