8.2.x/modules/m_topic.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2019 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 $Id$
 */

#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 void
m_topic(struct Client *source_p, int parc, char *parv[])
{
  struct Channel *channel = NULL;

  if (EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
    return;
  }

  if ((channel = hash_find_channel(parv[1])) == NULL)
  {
    sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
    return;
  }

  /* setting topic */
  if (parc > 2)
  {
    const struct ChannelMember *member = NULL;

    if ((member = find_channel_link(source_p, channel)) == NULL)
    {
      sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
      return;
    }

    if (!HasCMode(channel, 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(channel, parv[2], topic_info, event_base->time.sec_real, true);

      sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
                    source_p->id, channel->name,
                    channel->topic);
      sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
                           source_p->name,
                           source_p->username,
                           source_p->host,
                           channel->name, channel->topic);
    }
    else
      sendto_one_numeric(source_p, &me, ERR_CHANOPRIVSNEEDED, channel->name);
  }
  else /* only asking for topic */
  {
    if (!SecretChannel(channel) || IsMember(source_p, channel))
    {
      if (channel->topic[0] == '\0')
        sendto_one_numeric(source_p, &me, RPL_NOTOPIC, channel->name);
      else
      {
        sendto_one_numeric(source_p, &me, RPL_TOPIC,
                           channel->name, channel->topic);
        sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, channel->name,
                           channel->topic_info,
                           channel->topic_time);
      }
    }
    else
      sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
  }
}


/*! \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 void
ms_topic(struct Client *source_p, int parc, char *parv[])
{
  struct Channel *channel = NULL;
  char topic_info[NICKLEN + USERLEN + HOSTLEN + 3];  /* +3 for !, @, \0 */

  if (parc < 3)
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
    return;
  }

  if ((channel = hash_find_channel(parv[1])) == NULL)
  {
    sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
    return;
  }

  if (IsClient(source_p))
    snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
             source_p->username, source_p->host);
  else if (IsHidden(source_p) || ConfigServerHide.hide_servers)
    strlcpy(topic_info, me.name, sizeof(topic_info));
  else
    strlcpy(topic_info, source_p->name, sizeof(topic_info));

  channel_set_topic(channel, parv[2], topic_info, event_base->time.sec_real, false);

  sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
                source_p->id, channel->name,
                channel->topic);

  if (IsClient(source_p))
    sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
                         source_p->name,
                         source_p->username,
                         source_p->host,
                         channel->name, channel->topic);
  else
    sendto_channel_local(NULL, channel, 0, 0, 0, ":%s TOPIC %s :%s",
                         (IsHidden(source_p) || ConfigServerHide.hide_servers) ? me.name : source_p->name,
                         channel->name, channel->topic);
}

static struct Message topic_msgtab =
{
  .cmd = "TOPIC",
  .args_min = 2,
  .args_max = MAXPARA,
  .flags = MFLG_ENDGRACE,
  .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 = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	9082
Committed:	Sun Oct 13 09:58:37 2019 UTC (6 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	6620 byte(s)
Log Message:	- Rename struct Membership to ChannelMember - Rename Channel::last_knock to last_knock_time - Rename Channel::last_invite to last_invite_time - Rename chptr to channel
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	8751	* Copyright (c) 1997-2019 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18	michael	4564	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_topic.c
23			* \brief Includes required functions for processing the TOPIC command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "channel.h"
30			#include "channel_mode.h"
31			#include "client.h"
32	michael	5537	#include "conf.h"
33	adx	30	#include "hash.h"
34			#include "irc_string.h"
35			#include "ircd.h"
36			#include "numeric.h"
37			#include "send.h"
38			#include "parse.h"
39			#include "modules.h"
40			#include "packet.h"
41
42
43	michael	3332	/*! \brief TOPIC command handler
44			*
45			* \param source_p Pointer to allocated Client struct from which the message
46			* originally comes from. This can be a local or remote client.
47			* \param parc Integer holding the number of supplied arguments.
48			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
49			* pointers.
50			* \note Valid arguments for this command are:
51			* - parv[0] = command
52			* - parv[1] = channel name
53	michael	7089	* - parv[2] = topic text, if setting topic (can be an empty string)
54	adx	30	*/
55	michael	9078	static void
56	michael	3156	m_topic(struct Client source_p, int parc, char parv[])
57	adx	30	{
58	michael	9082	struct Channel *channel = NULL;
59	adx	30
60	michael	885	if (EmptyString(parv[1]))
61	adx	30	{
62	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
63	michael	9078	return;
64	adx	30	}
65
66	michael	9082	if ((channel = hash_find_channel(parv[1])) == NULL)
67	adx	30	{
68	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
69	michael	9078	return;
70	michael	895	}
71
72			/* setting topic */
73			if (parc > 2)
74			{
75	michael	9082	const struct ChannelMember *member = NULL;
76	michael	895
77	michael	9082	if ((member = find_channel_link(source_p, channel)) == NULL)
78	adx	30	{
79	michael	9082	sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
80	michael	9078	return;
81	adx	30	}
82
83	michael	9082	if (!HasCMode(channel, MODE_TOPICLIMIT) \|\|
84	michael	8043	has_member_flags(member, CHFL_CHANOP \| CHFL_HALFOP))
85	adx	30	{
86	michael	6931	char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
87	michael	885
88	michael	1203	snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
89			source_p->username, source_p->host);
90	michael	9082	channel_set_topic(channel, parv[2], topic_info, event_base->time.sec_real, true);
91	adx	30
92	michael	4963	sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
93	michael	9082	source_p->id, channel->name,
94			channel->topic);
95			sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
96	michael	895	source_p->name,
97			source_p->username,
98			source_p->host,
99	michael	9082	channel->name, channel->topic);
100	adx	30	}
101	michael	895	else
102	michael	9082	sendto_one_numeric(source_p, &me, ERR_CHANOPRIVSNEEDED, channel->name);
103	michael	895	}
104			else /* only asking for topic */
105			{
106	michael	9082	if (!SecretChannel(channel) \|\| IsMember(source_p, channel))
107	adx	30	{
108	michael	9082	if (channel->topic[0] == '\0')
109			sendto_one_numeric(source_p, &me, RPL_NOTOPIC, channel->name);
110	adx	30	else
111			{
112	michael	3109	sendto_one_numeric(source_p, &me, RPL_TOPIC,
113	michael	9082	channel->name, channel->topic);
114			sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, channel->name,
115			channel->topic_info,
116			channel->topic_time);
117	adx	30	}
118			}
119			else
120	michael	9082	sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
121	adx	30	}
122			}
123	michael	1230
124	michael	3332
125			/*! \brief TOPIC command handler
126			*
127			* \param source_p Pointer to allocated Client struct from which the message
128			* originally comes from. This can be a local or remote client.
129			* \param parc Integer holding the number of supplied arguments.
130			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
131			* pointers.
132			* \note Valid arguments for this command are:
133			* - parv[0] = command
134			* - parv[1] = channel name
135	michael	7089	* - parv[2] = topic text (can be an empty string)
136	michael	3332	*/
137	michael	9078	static void
138	michael	3156	ms_topic(struct Client source_p, int parc, char parv[])
139	michael	1799	{
140	michael	9082	struct Channel *channel = NULL;
141	michael	6931	char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
142	michael	1799
143	michael	7087	if (parc < 3)
144	michael	1799	{
145	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
146	michael	9078	return;
147	michael	1799	}
148
149	michael	9082	if ((channel = hash_find_channel(parv[1])) == NULL)
150	michael	1799	{
151	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
152	michael	9078	return;
153	michael	1799	}
154
155	michael	8430	if (IsClient(source_p))
156	michael	1799	snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
157			source_p->username, source_p->host);
158	michael	8667	else if (IsHidden(source_p) \|\| ConfigServerHide.hide_servers)
159			strlcpy(topic_info, me.name, sizeof(topic_info));
160	michael	8430	else
161			strlcpy(topic_info, source_p->name, sizeof(topic_info));
162
163	michael	9082	channel_set_topic(channel, parv[2], topic_info, event_base->time.sec_real, false);
164	michael	1799
165	michael	4963	sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
166	michael	9082	source_p->id, channel->name,
167			channel->topic);
168	michael	1799
169	michael	8430	if (IsClient(source_p))
170	michael	9082	sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
171	michael	1799	source_p->name,
172			source_p->username,
173			source_p->host,
174	michael	9082	channel->name, channel->topic);
175	michael	8430	else
176	michael	9082	sendto_channel_local(NULL, channel, 0, 0, 0, ":%s TOPIC %s :%s",
177	michael	8430	(IsHidden(source_p) \|\| ConfigServerHide.hide_servers) ? me.name : source_p->name,
178	michael	9082	channel->name, channel->topic);
179	michael	1799	}
180
181	michael	2820	static struct Message topic_msgtab =
182			{
183	michael	5880	.cmd = "TOPIC",
184			.args_min = 2,
185			.args_max = MAXPARA,
186	michael	8714	.flags = MFLG_ENDGRACE,
187	michael	5880	.handlers[UNREGISTERED_HANDLER] = m_unregistered,
188			.handlers[CLIENT_HANDLER] = m_topic,
189			.handlers[SERVER_HANDLER] = ms_topic,
190			.handlers[ENCAP_HANDLER] = m_ignore,
191			.handlers[OPER_HANDLER] = m_topic
192	michael	1230	};
193
194			static void
195			module_init(void)
196			{
197			mod_add_cmd(&topic_msgtab);
198			}
199
200			static void
201			module_exit(void)
202			{
203			mod_del_cmd(&topic_msgtab);
204			}
205
206	michael	2820	struct module module_entry =
207			{
208	michael	1230	.version = "$Revision$",
209			.modinit = module_init,
210			.modexit = module_exit,
211			};