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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 2002-2016 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file m_tburst.c |
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* \brief Includes required functions for processing the TBURST command. |
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* \version $Id$ |
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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 "server.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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/*! \brief TBURST command handler |
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* |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = command |
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* - parv[1] = channel timestamp |
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* - parv[2] = channel name |
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* - parv[3] = topic timestamp |
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* - parv[4] = topic setter |
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* - parv[5] = topic (can be an empty string) |
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*/ |
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static int |
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ms_tburst(struct Client *source_p, 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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uintmax_t remote_channel_ts = strtoumax(parv[1], NULL, 10); |
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uintmax_t remote_topic_ts = strtoumax(parv[3], NULL, 10); |
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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 0; |
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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 3 cases where |
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* we would accept a topic |
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* |
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* Case 1: |
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* A services client/server wants to set a topic |
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* Case 2: |
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* The TS of the remote channel is older than ours |
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* Case 3: |
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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->creationtime) |
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accept_remote = 1; |
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else if (remote_channel_ts == chptr->creationtime) |
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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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int hidden_server = (ConfigServerHide.hide_servers || IsHidden(source_p)); |
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|
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channel_set_topic(chptr, topic, setby, remote_topic_ts, 0); |
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|
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sendto_server(source_p, CAPAB_TBURST, 0, ":%s TBURST %s %s %s %s :%s", |
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source_p->id, parv[1], parv[2], parv[3], setby, topic); |
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|
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if (topic_differs) |
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{ |
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if (!IsClient(source_p)) |
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sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s TOPIC %s :%s", |
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hidden_server ? me.name : source_p->name, |
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chptr->name, chptr->topic); |
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else |
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sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s", |
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source_p->name, source_p->username, source_p->host, |
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chptr->name, chptr->topic); |
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} |
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} |
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|
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return 0; |
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} |
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|
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static struct Message tburst_msgtab = |
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{ |
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.cmd = "TBURST", |
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.args_min = 6, |
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.args_max = MAXPARA, |
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.handlers[UNREGISTERED_HANDLER] = m_ignore, |
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.handlers[CLIENT_HANDLER] = m_ignore, |
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.handlers[SERVER_HANDLER] = ms_tburst, |
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.handlers[ENCAP_HANDLER] = m_ignore, |
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.handlers[OPER_HANDLER] = 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", CAPAB_TBURST); |
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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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{ |
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.version = "$Revision$", |
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.modinit = module_init, |
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.modexit = module_exit, |
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}; |