2ae93813bd
(provided channelTS != 0). ETB is controlled by the EOPMOD capab. Fairly complicated stuff is needed for older servers. ETB can come from clients or servers, but at this time it should only be sent from clients, as otherwise it is not always possible to update older servers.
242 lines
7.4 KiB
C
242 lines
7.4 KiB
C
/* modules/m_tb.c
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*
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* Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
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* Copyright (C) 2003-2005 ircd-ratbox 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: m_tb.c 1349 2006-05-17 17:37:46Z jilles $
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*/
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#include "stdinc.h"
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#include "send.h"
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#include "channel.h"
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#include "client.h"
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#include "common.h"
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#include "config.h"
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#include "ircd.h"
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#include "match.h"
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#include "s_conf.h"
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#include "msg.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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static int ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
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static int ms_etb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
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struct Message tb_msgtab = {
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"TB", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_ignore, mg_ignore, {ms_tb, 4}, mg_ignore, mg_ignore}
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};
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struct Message etb_msgtab = {
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"ETB", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_ignore, {ms_etb, 5}, {ms_etb, 5}, mg_ignore, mg_ignore}
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};
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mapi_clist_av1 tb_clist[] = { &tb_msgtab, &etb_msgtab, NULL };
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DECLARE_MODULE_AV1(tb, NULL, NULL, tb_clist, NULL, NULL, "$Revision: 1349 $");
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/* m_tb()
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*
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* parv[1] - channel
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* parv[2] - topic ts
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* parv[3] - optional topicwho/topic
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* parv[4] - topic
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*/
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static int
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ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct Channel *chptr;
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const char *newtopic;
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const char *newtopicwho;
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time_t newtopicts;
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struct Client *fakesource_p;
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chptr = find_channel(parv[1]);
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if(chptr == NULL)
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return 0;
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newtopicts = atol(parv[2]);
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/* Hide connecting server on netburst -- jilles */
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if (ConfigServerHide.flatten_links && !HasSentEob(source_p))
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fakesource_p = &me;
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else
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fakesource_p = source_p;
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if(parc == 5)
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{
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newtopic = parv[4];
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newtopicwho = parv[3];
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}
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else
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{
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newtopic = parv[3];
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newtopicwho = fakesource_p->name;
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}
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if (EmptyString(newtopic))
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return 0;
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if(chptr->topic == NULL || chptr->topic_time > newtopicts)
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{
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/* its possible the topicts is a few seconds out on some
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* servers, due to lag when propagating it, so if theyre the
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* same topic just drop the message --fl
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*/
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if(chptr->topic != NULL && strcmp(chptr->topic, newtopic) == 0)
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return 0;
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set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
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sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
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fakesource_p->name, chptr->chname, newtopic);
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sendto_server(client_p, chptr, CAP_TB|CAP_TS6, NOCAPS,
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":%s TB %s %ld %s%s:%s",
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use_id(source_p), chptr->chname, (long) chptr->topic_time,
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ConfigChannel.burst_topicwho ? chptr->topic_info : "",
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ConfigChannel.burst_topicwho ? " " : "", chptr->topic);
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}
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return 0;
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}
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/* ms_etb()
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*
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* parv[1] - channel ts
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* parv[2] - channel
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* parv[3] - topic ts
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* parv[4] - topicwho
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* parv[5] - topic
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*/
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static int
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ms_etb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct Channel *chptr;
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const char *newtopic;
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const char *newtopicwho;
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time_t channelts, newtopicts;
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struct Client *fakesource_p, *source_server_p;
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int textchange, can_use_tb, member;
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channelts = atol(parv[1]);
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chptr = find_channel(parv[2]);
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if(chptr == NULL)
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return 0;
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newtopicts = atol(parv[3]);
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/* Hide connecting server on netburst -- jilles */
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if (IsServer(source_p) && ConfigServerHide.flatten_links &&
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!HasSentEob(source_p))
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fakesource_p = &me;
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else
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fakesource_p = source_p;
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newtopicwho = parv[4];
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newtopic = parv[parc - 1];
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if(chptr->topic == NULL || chptr->channelts > channelts ||
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(chptr->channelts == channelts && chptr->topic_time < newtopicts))
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{
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textchange = chptr->topic == NULL || strcmp(chptr->topic, newtopic);
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can_use_tb = textchange && !EmptyString(newtopic) &&
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(chptr->topic == NULL || chptr->topic_time > newtopicts);
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set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
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newtopic = chptr->topic ? chptr->topic : "";
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if (chptr->topic_info)
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newtopicwho = chptr->topic_info;
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/* Do not send a textually identical topic to clients,
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* but do propagate the new topicts/topicwho to servers.
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*/
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if(textchange)
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sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
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fakesource_p->name, chptr->chname,
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newtopic);
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/* Propagate channelts as given, because an older channelts
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* forces any change.
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*/
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sendto_server(client_p, chptr, CAP_EOPMOD|CAP_TS6, NOCAPS,
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":%s ETB %ld %s %ld %s :%s",
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use_id(source_p), (long)channelts, chptr->chname,
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(long)newtopicts, newtopicwho, newtopic);
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source_server_p = IsServer(source_p) ? source_p : source_p->servptr;
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if (can_use_tb)
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sendto_server(client_p, chptr, CAP_TB|CAP_TS6, CAP_EOPMOD,
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":%s TB %s %ld %s :%s",
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use_id(source_server_p),
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chptr->chname, (long)newtopicts,
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newtopicwho, newtopic);
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else if (IsPerson(source_p) && textchange)
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{
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member = IsMember(source_p, chptr);
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if (!member)
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sendto_server(client_p, chptr, CAP_TS6, CAP_EOPMOD,
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":%s SJOIN %ld %s + :@%s",
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use_id(source_server_p),
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(long)chptr->channelts,
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chptr->chname, use_id(source_p));
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if (EmptyString(newtopic) ||
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newtopicts >= rb_current_time() - 60)
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sendto_server(client_p, chptr, CAP_TS6, CAP_EOPMOD,
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":%s TOPIC %s :%s",
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use_id(source_p),
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chptr->chname, newtopic);
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else
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{
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sendto_server(client_p, chptr, CAP_TS6, CAP_EOPMOD,
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":%s TOPIC %s :%s",
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use_id(source_p),
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chptr->chname, "");
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sendto_server(client_p, chptr, CAP_TB|CAP_TS6, CAP_EOPMOD,
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":%s TB %s %ld %s :%s",
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use_id(source_server_p),
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chptr->chname, (long)newtopicts,
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newtopicwho, newtopic);
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}
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if (!member)
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sendto_server(client_p, chptr, CAP_TS6, CAP_EOPMOD,
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":%s PART %s :Topic set for %s",
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use_id(source_p),
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chptr->chname, newtopicwho);
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}
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else if (textchange)
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{
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/* Should not send :server ETB if not all servers
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* support EOPMOD.
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*/
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sendto_server(client_p, chptr, CAP_TS6, CAP_EOPMOD,
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":%s NOTICE %s :*** Notice -- Dropping topic change for %s",
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me.id, chptr->chname, chptr->chname);
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}
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}
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return 0;
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}
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