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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2018 ircd-hybrid development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
/*! \file m_topic.c
* \brief Includes required functions for processing the TOPIC command.
* \version $Id: m_topic.c 8430 2018-03-27 18:48:40Z michael $
*/
#include "stdinc.h"
#include "list.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "conf.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"
/*! \brief TOPIC command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = channel name
* - parv[2] = topic text, if setting topic (can be an empty string)
*/
static int
m_topic(struct Client *source_p, int parc, char *parv[])
{
struct Channel *chptr = NULL;
if (EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
return 0;
}
if (!IsFloodDone(source_p))
flood_endgrace(source_p);
if ((chptr = hash_find_channel(parv[1])) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
return 0;
}
/* setting topic */
if (parc > 2)
{
const struct Membership *member = NULL;
if ((member = find_channel_link(source_p, chptr)) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, chptr->name);
return 0;
}
if (!HasCMode(chptr, MODE_TOPICLIMIT) ||
has_member_flags(member, CHFL_CHANOP | CHFL_HALFOP))
{
char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
source_p->username, source_p->host);
channel_set_topic(chptr, parv[2], topic_info, CurrentTime, 1);
sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
source_p->id, chptr->name,
chptr->topic);
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
source_p->name,
source_p->username,
source_p->host,
chptr->name, chptr->topic);
}
else
sendto_one_numeric(source_p, &me, ERR_CHANOPRIVSNEEDED, chptr->name);
}
else /* only asking for topic */
{
if (!SecretChannel(chptr) || IsMember(source_p, chptr))
{
if (chptr->topic[0] == '\0')
sendto_one_numeric(source_p, &me, RPL_NOTOPIC, chptr->name);
else
{
sendto_one_numeric(source_p, &me, RPL_TOPIC,
chptr->name, chptr->topic);
sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, chptr->name,
chptr->topic_info,
chptr->topic_time);
}
}
else
sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, chptr->name);
}
return 0;
}
/*! \brief TOPIC command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = channel name
* - parv[2] = topic text (can be an empty string)
*/
static int
ms_topic(struct Client *source_p, int parc, char *parv[])
{
struct Channel *chptr = NULL;
char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
if (parc < 3)
{
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
return 0;
}
if ((chptr = hash_find_channel(parv[1])) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
return 0;
}
if (IsClient(source_p))
snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
source_p->username, source_p->host);
else
strlcpy(topic_info, source_p->name, sizeof(topic_info));
channel_set_topic(chptr, parv[2], topic_info, CurrentTime, 0);
sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
source_p->id, chptr->name,
chptr->topic);
if (IsClient(source_p))
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
source_p->name,
source_p->username,
source_p->host,
chptr->name, chptr->topic);
else
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s TOPIC %s :%s",
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? me.name : source_p->name,
chptr->name, chptr->topic);
return 0;
}
static struct Message topic_msgtab =
{
.cmd = "TOPIC",
.args_min = 2,
.args_max = MAXPARA,
.handlers[UNREGISTERED_HANDLER] = m_unregistered,
.handlers[CLIENT_HANDLER] = m_topic,
.handlers[SERVER_HANDLER] = ms_topic,
.handlers[ENCAP_HANDLER] = m_ignore,
.handlers[OPER_HANDLER] = m_topic
};
static void
module_init(void)
{
mod_add_cmd(&topic_msgtab);
}
static void
module_exit(void)
{
mod_del_cmd(&topic_msgtab);
}
struct module module_entry =
{
.version = "$Revision: 8430 $",
.modinit = module_init,
.modexit = module_exit,
};
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