ircd-hybrid-7.2/modules/m_tburst.c

/*  modules/m_tburst.c
 *  Copyright (C) 2002, 2003, 2004, 2005 Hybrid Development Team
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *  1.Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  2.Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  3.The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 *  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 *  $Id: m_tb.c 122 2005-10-13 10:57:26Z adx $
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "common.h"
#include "ircd.h"
#include "send.h"
#include "msg.h"
#include "modules.h"
#include "hash.h"
#include "s_serv.h"
#include "s_conf.h"

static void ms_tb(struct Client *, struct Client *, int, char *[]);
static void ms_tburst(struct Client *, struct Client *, int, char *[]);
static void set_topic(struct Client *, struct Channel *, time_t, char *, char *);

struct Message tburst_msgtab = {
  "TBURST", 0, 0, 6, 0, MFLG_SLOW, 0,
  {m_ignore, m_ignore, ms_tburst, m_ignore, m_ignore, m_ignore}
};

struct Message tb_msgtab = {
  "TB", 0, 0, 0, 0, MFLG_SLOW, 0,
  {m_ignore, m_ignore, ms_tb, m_ignore, m_ignore, m_ignore}
};

#ifndef STATIC_MODULES

void
_modinit(void)
{
  mod_add_cmd(&tb_msgtab);
  add_capability("TB", CAP_TB, 1);

  mod_add_cmd(&tburst_msgtab);
  add_capability("TBURST", CAP_TBURST, 1);
}

void
_moddeinit(void)
{
  mod_del_cmd(&tb_msgtab);
  delete_capability("TB");

  mod_del_cmd(&tburst_msgtab);
  delete_capability("TBURST");
}

const char *_version = "$Revision: 122 $";

#endif /* !STATIC_MODULES */

/* ms_tburst()
 *
 *      parv[0] = sender prefix
 *      parv[1] = channel timestamp
 *      parv[2] = channel
 *      parv[3] = topic timestamp
 *      parv[4] = topic setter
 *      parv[5] = topic
 */
static void
ms_tburst(struct Client *client_p, struct Client *source_p,
          int parc, char *parv[])
{
  struct Channel *chptr = NULL;
  time_t oldchannelts = atol(parv[1]);
  time_t oldtopicts = atol(parv[3]);

  if ((chptr = hash_find_channel(parv[2])) == NULL)
    return;

  /* Only allow topic change if we are the newer TS and server
   * sending TBURST has older TS and topicTS on older TS is
   * newer than current topicTS. -metalrock
   * XXX - Incorrect logic here as discussed on IRC
   */
  if ((oldchannelts <= chptr->channelts) &&
      ((chptr->topic == NULL) || (oldtopicts > chptr->topic_time)))
    set_topic(source_p, chptr, oldtopicts, parv[4], parv[5]);
}

/* ms_tb()
 * 
 *      parv[0] = sender prefix
 *      parv[1] = channel name
 *      parv[2] = topic timestamp
 *      parv[3] = topic setter OR topic itself if parc == 4
 *      parv[4] = topic itself if parc == 5
 */
#define tb_channel      parv[1]
#define tb_topicts_str  parv[2]

static void
ms_tb(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
{
  struct Channel *chptr;
  time_t tb_topicts = atol(tb_topicts_str);
  char *tb_whoset = NULL;
  char *tb_topic = NULL;

  if ((chptr = hash_find_channel(tb_channel)) == NULL)
    return;

  if (parc == 5)
  {
    tb_whoset = parv[3];
    tb_topic = parv[4];
  }
  else
  {
    tb_whoset = source_p->name;
    tb_topic = parv[3];
  }

  set_topic(source_p, chptr, tb_topicts, tb_whoset, tb_topic);
}

/*
 * set_topic
 *
 * inputs       - source_p pointer
 *              - channel pointer
 *              - topicts to set
 *              - who to set as who doing the topic
 *              - topic
 * output       - none
 * Side effects - simply propagates topic as needed
 * little helper function, could be removed
 */
static void
set_topic(struct Client *source_p, struct Channel *chptr, 
          time_t topicts, char *topicwho, char *topic)
{
  set_channel_topic(chptr, topic, topicwho, topicts);

    /* Only send TOPIC to channel if it's different */
  if (chptr->topic == NULL || strcmp(chptr->topic, topic))
    sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s TOPIC %s :%s",
                         ConfigServerHide.hide_servers ? me.name : source_p->name,
                         chptr->chname, chptr->topic == NULL ? "" : chptr->topic);

  sendto_server(source_p, NULL, chptr, CAP_TBURST, NOCAPS, NOFLAGS,
                ":%s TBURST %lu %s %lu %s :%s",
                me.name, (unsigned long)chptr->channelts, chptr->chname,
                (unsigned long)chptr->topic_time,
                chptr->topic_info == NULL ? "" : chptr->topic_info,
                chptr->topic == NULL ? "" : chptr->topic);
  sendto_server(source_p, NULL, chptr, CAP_TB, CAP_TBURST, NOFLAGS,
                ":%s TB %s %lu %s :%s",
                me.name, chptr->chname,
                (unsigned long)chptr->topic_time, 
                chptr->topic_info == NULL ? "" : chptr->topic_info,
                chptr->topic == NULL ? "" : chptr->topic);
}
Revision:	325
Committed:	Sun Dec 25 09:26:45 2005 UTC (18 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	5829 byte(s)
Log Message:	- Imported m_tburst.c from 7.3
#	Content
1	/* modules/m_tburst.c
2	* Copyright (C) 2002, 2003, 2004, 2005 Hybrid Development Team
3	*
4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are
6	* met:
7	*
8	* 1.Redistributions of source code must retain the above copyright notice,
9	* this list of conditions and the following disclaimer.
10	* 2.Redistributions in binary form must reproduce the above copyright
11	* notice, this list of conditions and the following disclaimer in the
12	* documentation and/or other materials provided with the distribution.
13	* 3.The name of the author may not be used to endorse or promote products
14	* derived from this software without specific prior written permission.
15	*
16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26	* POSSIBILITY OF SUCH DAMAGE.
27	*
28	* $Id: m_tb.c 122 2005-10-13 10:57:26Z adx $
29	*/
30
31	#include "stdinc.h"
32	#include "handlers.h"
33	#include "client.h"
34	#include "common.h"
35	#include "ircd.h"
36	#include "send.h"
37	#include "msg.h"
38	#include "modules.h"
39	#include "hash.h"
40	#include "s_serv.h"
41	#include "s_conf.h"
42
43	static void ms_tb(struct Client , struct Client , int, char *[]);
44	static void ms_tburst(struct Client , struct Client , int, char *[]);
45	static void set_topic(struct Client , struct Channel , time_t, char , char );
46
47	struct Message tburst_msgtab = {
48	"TBURST", 0, 0, 6, 0, MFLG_SLOW, 0,
49	{m_ignore, m_ignore, ms_tburst, m_ignore, m_ignore, m_ignore}
50	};
51
52	struct Message tb_msgtab = {
53	"TB", 0, 0, 0, 0, MFLG_SLOW, 0,
54	{m_ignore, m_ignore, ms_tb, m_ignore, m_ignore, m_ignore}
55	};
56
57	#ifndef STATIC_MODULES
58
59	void
60	_modinit(void)
61	{
62	mod_add_cmd(&tb_msgtab);
63	add_capability("TB", CAP_TB, 1);
64
65	mod_add_cmd(&tburst_msgtab);
66	add_capability("TBURST", CAP_TBURST, 1);
67	}
68
69	void
70	_moddeinit(void)
71	{
72	mod_del_cmd(&tb_msgtab);
73	delete_capability("TB");
74
75	mod_del_cmd(&tburst_msgtab);
76	delete_capability("TBURST");
77	}
78
79	const char *_version = "$Revision: 122 $";
80
81	#endif /* !STATIC_MODULES */
82
83	/* ms_tburst()
84	*
85	* parv[0] = sender prefix
86	* parv[1] = channel timestamp
87	* parv[2] = channel
88	* parv[3] = topic timestamp
89	* parv[4] = topic setter
90	* parv[5] = topic
91	*/
92	static void
93	ms_tburst(struct Client client_p, struct Client source_p,
94	int parc, char *parv[])
95	{
96	struct Channel *chptr = NULL;
97	time_t oldchannelts = atol(parv[1]);
98	time_t oldtopicts = atol(parv[3]);
99
100	if ((chptr = hash_find_channel(parv[2])) == NULL)
101	return;
102
103	/* Only allow topic change if we are the newer TS and server
104	* sending TBURST has older TS and topicTS on older TS is
105	* newer than current topicTS. -metalrock
106	* XXX - Incorrect logic here as discussed on IRC
107	*/
108	if ((oldchannelts <= chptr->channelts) &&
109	((chptr->topic == NULL) \|\| (oldtopicts > chptr->topic_time)))
110	set_topic(source_p, chptr, oldtopicts, parv[4], parv[5]);
111	}
112
113	/* ms_tb()
114	*
115	* parv[0] = sender prefix
116	* parv[1] = channel name
117	* parv[2] = topic timestamp
118	* parv[3] = topic setter OR topic itself if parc == 4
119	* parv[4] = topic itself if parc == 5
120	*/
121	#define tb_channel parv[1]
122	#define tb_topicts_str parv[2]
123
124	static void
125	ms_tb(struct Client client_p, struct Client source_p, int parc, char *parv[])
126	{
127	struct Channel *chptr;
128	time_t tb_topicts = atol(tb_topicts_str);
129	char *tb_whoset = NULL;
130	char *tb_topic = NULL;
131
132	if ((chptr = hash_find_channel(tb_channel)) == NULL)
133	return;
134
135	if (parc == 5)
136	{
137	tb_whoset = parv[3];
138	tb_topic = parv[4];
139	}
140	else
141	{
142	tb_whoset = source_p->name;
143	tb_topic = parv[3];
144	}
145
146	set_topic(source_p, chptr, tb_topicts, tb_whoset, tb_topic);
147	}
148
149	/*
150	* set_topic
151	*
152	* inputs - source_p pointer
153	* - channel pointer
154	* - topicts to set
155	* - who to set as who doing the topic
156	* - topic
157	* output - none
158	* Side effects - simply propagates topic as needed
159	* little helper function, could be removed
160	*/
161	static void
162	set_topic(struct Client source_p, struct Channel chptr,
163	time_t topicts, char topicwho, char topic)
164	{
165	set_channel_topic(chptr, topic, topicwho, topicts);
166
167	/* Only send TOPIC to channel if it's different */
168	if (chptr->topic == NULL \|\| strcmp(chptr->topic, topic))
169	sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s TOPIC %s :%s",
170	ConfigServerHide.hide_servers ? me.name : source_p->name,
171	chptr->chname, chptr->topic == NULL ? "" : chptr->topic);
172
173	sendto_server(source_p, NULL, chptr, CAP_TBURST, NOCAPS, NOFLAGS,
174	":%s TBURST %lu %s %lu %s :%s",
175	me.name, (unsigned long)chptr->channelts, chptr->chname,
176	(unsigned long)chptr->topic_time,
177	chptr->topic_info == NULL ? "" : chptr->topic_info,
178	chptr->topic == NULL ? "" : chptr->topic);
179	sendto_server(source_p, NULL, chptr, CAP_TB, CAP_TBURST, NOFLAGS,
180	":%s TB %s %lu %s :%s",
181	me.name, chptr->chname,
182	(unsigned long)chptr->topic_time,
183	chptr->topic_info == NULL ? "" : chptr->topic_info,
184	chptr->topic == NULL ? "" : chptr->topic);
185	}