ircd-hybrid/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 "parse.h"
#include "msg.h"
#include "conf/modules.h"
#include "hash.h"
#include "s_serv.h"
#include "channel.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,
                      const char *, const 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 }
};

INIT_MODULE(m_tburst, "$Revision: 122 $")
{
  mod_add_cmd(&tb_msgtab);
  add_capability("TB", CAP_TB, 1);

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

CLEANUP_MODULE
{
  delete_capability("TBURST");
  mod_del_cmd(&tburst_msgtab);

  delete_capability("TB");
  mod_del_cmd(&tb_msgtab);
}

/* 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,
          const char *topicwho, const char *topic)
{
  int new_topic = strcmp(chptr->topic ? chptr->topic : "", topic);

  set_channel_topic(chptr, topic, topicwho, topicts);

  /* Only send TOPIC to channel if it's different */
  if (new_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,
                ":%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,
                ":%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:	741
Committed:	Sun Jul 23 13:49:20 2006 UTC (19 years, 1 month ago) by adx
Content type:	text/x-csrc
File size:	5826 byte(s)
Log Message:	+ removed s_conf.h and superseded parts of s_conf.c
#	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 "parse.h"
38	#include "msg.h"
39	#include "conf/modules.h"
40	#include "hash.h"
41	#include "s_serv.h"
42	#include "channel.h"
43
44	static void ms_tb(struct Client , struct Client , int, char *[]);
45	static void ms_tburst(struct Client , struct Client , int, char *[]);
46	static void set_topic(struct Client , struct Channel , time_t,
47	const char , const char );
48
49	struct Message tburst_msgtab = {
50	"TBURST", 0, 0, 6, 0, MFLG_SLOW, 0,
51	{ m_ignore, m_ignore, ms_tburst, m_ignore, m_ignore, m_ignore }
52	};
53
54	struct Message tb_msgtab = {
55	"TB", 0, 0, 0, 0, MFLG_SLOW, 0,
56	{ m_ignore, m_ignore, ms_tb, m_ignore, m_ignore, m_ignore }
57	};
58
59	INIT_MODULE(m_tburst, "$Revision: 122 $")
60	{
61	mod_add_cmd(&tb_msgtab);
62	add_capability("TB", CAP_TB, 1);
63
64	mod_add_cmd(&tburst_msgtab);
65	add_capability("TBURST", CAP_TBURST, 1);
66	}
67
68	CLEANUP_MODULE
69	{
70	delete_capability("TBURST");
71	mod_del_cmd(&tburst_msgtab);
72
73	delete_capability("TB");
74	mod_del_cmd(&tb_msgtab);
75	}
76
77	/* ms_tburst()
78	*
79	* parv[0] = sender prefix
80	* parv[1] = channel timestamp
81	* parv[2] = channel
82	* parv[3] = topic timestamp
83	* parv[4] = topic setter
84	* parv[5] = topic
85	*/
86	static void
87	ms_tburst(struct Client client_p, struct Client source_p,
88	int parc, char *parv[])
89	{
90	struct Channel *chptr = NULL;
91	time_t oldchannelts = atol(parv[1]);
92	time_t oldtopicts = atol(parv[3]);
93
94	if ((chptr = hash_find_channel(parv[2])) == NULL)
95	return;
96
97	/* Only allow topic change if we are the newer TS and server
98	* sending TBURST has older TS and topicTS on older TS is
99	* newer than current topicTS. -metalrock
100	* XXX - Incorrect logic here as discussed on IRC
101	*/
102	if ((oldchannelts <= chptr->channelts) &&
103	((chptr->topic == NULL) \|\| (oldtopicts > chptr->topic_time)))
104	set_topic(source_p, chptr, oldtopicts, parv[4], parv[5]);
105	}
106
107	/* ms_tb()
108	*
109	* parv[0] = sender prefix
110	* parv[1] = channel name
111	* parv[2] = topic timestamp
112	* parv[3] = topic setter OR topic itself if parc == 4
113	* parv[4] = topic itself if parc == 5
114	*/
115	#define tb_channel parv[1]
116	#define tb_topicts_str parv[2]
117
118	static void
119	ms_tb(struct Client client_p, struct Client source_p, int parc, char *parv[])
120	{
121	struct Channel *chptr;
122	time_t tb_topicts = atol(tb_topicts_str);
123	char *tb_whoset = NULL;
124	char *tb_topic = NULL;
125
126	if ((chptr = hash_find_channel(tb_channel)) == NULL)
127	return;
128
129	if (parc == 5)
130	{
131	tb_whoset = parv[3];
132	tb_topic = parv[4];
133	}
134	else
135	{
136	tb_whoset = source_p->name;
137	tb_topic = parv[3];
138	}
139
140	set_topic(source_p, chptr, tb_topicts, tb_whoset, tb_topic);
141	}
142
143	/*
144	* set_topic
145	*
146	* inputs - source_p pointer
147	* - channel pointer
148	* - topicts to set
149	* - who to set as who doing the topic
150	* - topic
151	* output - none
152	* Side effects - simply propagates topic as needed
153	* little helper function, could be removed
154	*/
155	static void
156	set_topic(struct Client source_p, struct Channel chptr, time_t topicts,
157	const char topicwho, const char topic)
158	{
159	int new_topic = strcmp(chptr->topic ? chptr->topic : "", topic);
160
161	set_channel_topic(chptr, topic, topicwho, topicts);
162
163	/* Only send TOPIC to channel if it's different */
164	if (new_topic)
165	sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s TOPIC %s :%s",
166	ConfigServerHide.hide_servers ? me.name : source_p->name,
167	chptr->chname, chptr->topic == NULL ? "" : chptr->topic);
168
169	sendto_server(source_p, NULL, chptr, CAP_TBURST, NOCAPS,
170	":%s TBURST %lu %s %lu %s :%s",
171	me.name, (unsigned long)chptr->channelts, chptr->chname,
172	(unsigned long)chptr->topic_time,
173	chptr->topic_info == NULL ? "" : chptr->topic_info,
174	chptr->topic == NULL ? "" : chptr->topic);
175	sendto_server(source_p, NULL, chptr, CAP_TB, CAP_TBURST,
176	":%s TB %s %lu %s :%s",
177	me.name, chptr->chname,
178	(unsigned long)chptr->topic_time,
179	chptr->topic_info == NULL ? "" : chptr->topic_info,
180	chptr->topic == NULL ? "" : chptr->topic);
181	}