mirror of
https://github.com/matrix-construct/construct
synced 2024-08-26 19:35:17 +02:00
239 lines
7.7 KiB
C++
239 lines
7.7 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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using namespace ircd;
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static const char tb_desc[] =
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"Provides TS6 TB and ETB commands for topic bursting between servers";
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static void ms_tb(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[]);
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static void ms_etb(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[]);
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struct Message tb_msgtab = {
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"TB", 0, 0, 0, 0,
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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, 0,
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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_AV2(tb, NULL, NULL, tb_clist, NULL, NULL, NULL, NULL, tb_desc);
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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 void
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ms_tb(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *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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client::client *fake_source;
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chptr = chan::get(parv[1], std::nothrow);
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if(chptr == NULL)
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return;
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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 && !has_sent_eob(source))
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fake_source = &me;
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else
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fake_source = &source;
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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 = fake_source->name;
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}
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if (EmptyString(newtopic))
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return;
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if(!chptr->topic || 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 && strcmp(chptr->topic.text.c_str(), newtopic) == 0)
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return;
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set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
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sendto_channel_local(chan::ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
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fake_source->name, chptr->name.c_str(), newtopic);
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sendto_server(&client, chptr, CAP_TB|CAP_TS6, NOCAPS,
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":%s TB %s %ld %s%s:%s",
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use_id(&source), chptr->name.c_str(), (long) chptr->topic.time,
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ConfigChannel.burst_topicwho ? chptr->topic.info.c_str() : "",
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ConfigChannel.burst_topicwho ? " " : "", chptr->topic.text.c_str());
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}
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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 void
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ms_etb(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *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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client::client *fake_source, *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 = chan::get(parv[2], std::nothrow);
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if(chptr == NULL)
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return;
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newtopicts = atol(parv[3]);
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/* Hide connecting server on netburst -- jilles */
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if (is_server(source) && ConfigServerHide.flatten_links &&
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!has_sent_eob(source))
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fake_source = &me;
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else
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fake_source = &source;
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newtopicwho = parv[4];
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newtopic = parv[parc - 1];
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if(!chptr->topic || 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.text.empty() || strcmp(chptr->topic.text.c_str(), newtopic);
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can_use_tb = textchange && !EmptyString(newtopic) &&
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(chptr->topic.text.empty() || chptr->topic.time > newtopicts);
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set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
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newtopic = !chptr->topic.text.empty()? chptr->topic.text.c_str() : "";
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if (!chptr->topic.info.empty())
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newtopicwho = chptr->topic.info.c_str(); //TODO: XXX: ??
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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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{
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if (is_person(*fake_source))
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sendto_channel_local(chan::ALL_MEMBERS, chptr,
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":%s!%s@%s TOPIC %s :%s",
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fake_source->name,
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fake_source->username,
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fake_source->host,
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chptr->name.c_str(),
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newtopic);
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else
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sendto_channel_local(chan::ALL_MEMBERS, chptr,
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":%s TOPIC %s :%s",
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fake_source->name,
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chptr->name.c_str(), newtopic);
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}
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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, chptr, CAP_EOPMOD|CAP_TS6, NOCAPS,
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":%s ETB %ld %s %ld %s :%s",
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use_id(&source), (long)channelts, chptr->name.c_str(),
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(long)newtopicts, newtopicwho, newtopic);
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source_server_p = is_server(source) ? &source : source.servptr;
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if (can_use_tb)
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sendto_server(&client, 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->name.c_str(), (long)newtopicts,
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newtopicwho, newtopic);
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else if (is_person(source) && textchange)
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{
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member = is_member(chptr, &source);
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if (!member)
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sendto_server(&client, 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->name.c_str(), use_id(&source));
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if (EmptyString(newtopic) ||
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newtopicts >= rb_current_time() - 60)
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sendto_server(&client, chptr, CAP_TS6, CAP_EOPMOD,
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":%s TOPIC %s :%s",
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use_id(&source),
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chptr->name.c_str(), newtopic);
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else
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{
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sendto_server(&client, chptr, CAP_TS6, CAP_EOPMOD,
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":%s TOPIC %s :%s",
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use_id(&source),
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chptr->name.c_str(), "");
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sendto_server(&client, 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->name.c_str(), (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, chptr, CAP_TS6, CAP_EOPMOD,
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":%s PART %s :Topic set for %s",
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use_id(&source),
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chptr->name.c_str(), 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, 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->name.c_str(), chptr->name.c_str());
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}
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}
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}
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