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
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2019 ircd-hybrid development team
5	*
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	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	* USA
20	*/
21
22	/*! \file m_topic.c
23	* \brief Includes required functions for processing the TOPIC command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "list.h"
29	#include "channel.h"
30	#include "channel_mode.h"
31	#include "client.h"
32	#include "conf.h"
33	#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	/*! \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	* - parv[2] = topic text, if setting topic (can be an empty string)
54	*/
55	static void
56	m_topic(struct Client source_p, int parc, char parv[])
57	{
58	struct Channel *channel = NULL;
59
60	if (EmptyString(parv[1]))
61	{
62	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
63	return;
64	}
65
66	if ((channel = hash_find_channel(parv[1])) == NULL)
67	{
68	sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
69	return;
70	}
71
72	/* setting topic */
73	if (parc > 2)
74	{
75	const struct ChannelMember *member = NULL;
76
77	if ((member = find_channel_link(source_p, channel)) == NULL)
78	{
79	sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
80	return;
81	}
82
83	if (!HasCMode(channel, MODE_TOPICLIMIT) \|\|
84	has_member_flags(member, CHFL_CHANOP \| CHFL_HALFOP))
85	{
86	char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
87
88	snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
89	source_p->username, source_p->host);
90	channel_set_topic(channel, parv[2], topic_info, event_base->time.sec_real, true);
91
92	sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
93	source_p->id, channel->name,
94	channel->topic);
95	sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
96	source_p->name,
97	source_p->username,
98	source_p->host,
99	channel->name, channel->topic);
100	}
101	else
102	sendto_one_numeric(source_p, &me, ERR_CHANOPRIVSNEEDED, channel->name);
103	}
104	else /* only asking for topic */
105	{
106	if (!SecretChannel(channel) \|\| IsMember(source_p, channel))
107	{
108	if (channel->topic[0] == '\0')
109	sendto_one_numeric(source_p, &me, RPL_NOTOPIC, channel->name);
110	else
111	{
112	sendto_one_numeric(source_p, &me, RPL_TOPIC,
113	channel->name, channel->topic);
114	sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, channel->name,
115	channel->topic_info,
116	channel->topic_time);
117	}
118	}
119	else
120	sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, channel->name);
121	}
122	}
123
124
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	* - parv[2] = topic text (can be an empty string)
136	*/
137	static void
138	ms_topic(struct Client source_p, int parc, char parv[])
139	{
140	struct Channel *channel = NULL;
141	char topic_info[NICKLEN + USERLEN + HOSTLEN + 3]; /* +3 for !, @, \0 */
142
143	if (parc < 3)
144	{
145	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
146	return;
147	}
148
149	if ((channel = hash_find_channel(parv[1])) == NULL)
150	{
151	sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
152	return;
153	}
154
155	if (IsClient(source_p))
156	snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
157	source_p->username, source_p->host);
158	else if (IsHidden(source_p) \|\| ConfigServerHide.hide_servers)
159	strlcpy(topic_info, me.name, sizeof(topic_info));
160	else
161	strlcpy(topic_info, source_p->name, sizeof(topic_info));
162
163	channel_set_topic(channel, parv[2], topic_info, event_base->time.sec_real, false);
164
165	sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
166	source_p->id, channel->name,
167	channel->topic);
168
169	if (IsClient(source_p))
170	sendto_channel_local(NULL, channel, 0, 0, 0, ":%s!%s@%s TOPIC %s :%s",
171	source_p->name,
172	source_p->username,
173	source_p->host,
174	channel->name, channel->topic);
175	else
176	sendto_channel_local(NULL, channel, 0, 0, 0, ":%s TOPIC %s :%s",
177	(IsHidden(source_p) \|\| ConfigServerHide.hide_servers) ? me.name : source_p->name,
178	channel->name, channel->topic);
179	}
180
181	static struct Message topic_msgtab =
182	{
183	.cmd = "TOPIC",
184	.args_min = 2,
185	.args_max = MAXPARA,
186	.flags = MFLG_ENDGRACE,
187	.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	};
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	struct module module_entry =
207	{
208	.version = "$Revision$",
209	.modinit = module_init,
210	.modexit = module_exit,
211	};