trunk/modules/m_watch.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_watch.c: Maintains notify list
 *
 *  Copyright (C) 1997 Jukka Santala (Donwulff)
 *  Copyright (C) 2005 by the 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id$
 */

#include "stdinc.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "conf.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "s_user.h"
#include "watch.h"


/*
 * RPL_NOWON        - Online at the moment (Succesfully added to WATCH-list)
 * RPL_NOWOFF       - Offline at the moment (Succesfully added to WATCH-list)
 * RPL_WATCHOFF     - Succesfully removed from WATCH-list.
 * ERR_TOOMANYWATCH - Take a guess :>  Too many WATCH entries.
 */
static void
show_watch(struct Client *client_p, const char *name,
           unsigned int rpl1, unsigned int rpl2)
{
  const struct Client *target_p = NULL;

  if ((target_p = find_person(client_p, name)))
    sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
               target_p->name, target_p->username,
               target_p->host, target_p->tsinfo);
  else
    sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
               name, "*", "*", 0);
}

/*
 * m_watch()
 *
 * parv[0] = sender prefix
 * parv[1] = watch options
 */
static void
m_watch(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
{
  dlink_node *ptr = NULL;
  char *s = NULL;
  char *p = NULL;
  char *user;
  char def[2] = "l";
  unsigned int list_requested = 0;

  /*
   * Default to 'l' - list who's currently online
   */
  if (parc < 2)
    parv[1] = def;

  for (s = strtoken(&p, parv[1], ", "); s;
       s = strtoken(&p,    NULL, ", "))
  {
    if ((user = strchr(s, '!')))
      *user++ = '\0'; /* Not used */

    /*
     * Prefix of "+", they want to add a name to their WATCH
     * list.
     */
    if (*s == '+')
    {
      if (*(s + 1) != '\0')
      {
        if (dlink_list_length(&source_p->localClient->watches) >=
            ConfigFileEntry.max_watch)
        {
          sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
                     source_p->name, s + 1, ConfigFileEntry.max_watch);
          continue;
        }

        watch_add_to_hash_table(s + 1, source_p);
      }

      show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
      continue;
    }

    /*
     * Prefix of "-", coward wants to remove somebody from their
     * WATCH list.  So do it. :-)
     */
    if (*s == '-')
    {
      watch_del_from_hash_table(s + 1, source_p);
      show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
      continue;
    }

    /*
     * Fancy "C" or "c", they want to nuke their WATCH list and start
     * over, so be it.
     */
    if (*s == 'C' || *s == 'c')
    {
      watch_del_watch_list(source_p);
      continue;
    }

    /*
     * Now comes the fun stuff, "S" or "s" returns a status report of
     * their WATCH list.  I imagine this could be CPU intensive if
     * it's done alot, perhaps an auto-lag on this?
     */
    if (*s == 'S' || *s == 's')
    {
      char buf[IRCD_BUFSIZE] = { '\0' };
      const struct Watch *anptr = NULL;
      unsigned int count = 0;

      if (list_requested & 0x1)
        continue;

      list_requested |= 0x1;

      /*
       * Send a list of how many users they have on their WATCH list
       * and how many WATCH lists they are on.
       */
      if ((anptr = watch_find_hash(source_p->name)))
        count = dlink_list_length(&anptr->watched_by);

      sendto_one(source_p, form_str(RPL_WATCHSTAT),
                 me.name, source_p->name,
                 dlink_list_length(&source_p->localClient->watches), count);

      /*
       * Send a list of everybody in their WATCH list.  Be careful
       * not to buffer overflow.
       */
      if ((ptr = source_p->localClient->watches.head) == NULL)
      {
        sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
                   me.name, source_p->name, *s);
        continue;
      }

      anptr = ptr->data;
      strlcpy(buf, anptr->nick, sizeof(buf));

      count = strlen(source_p->name) + strlen(me.name) + 10 +
              strlen(buf);

      while ((ptr = ptr->next))
      {
        anptr = ptr->data;

        if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
        {
          sendto_one(source_p, form_str(RPL_WATCHLIST),
                     me.name, source_p->name, buf);
          buf[0] = '\0';
          count = strlen(source_p->name) + strlen(me.name) + 10;
        }

        strcat(buf, " ");
        strcat(buf, anptr->nick);
        count += (strlen(anptr->nick) + 1);
      }

      sendto_one(source_p, form_str(RPL_WATCHLIST),
                 me.name, source_p->name, buf);
      sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
                 me.name, source_p->name, *s);
      continue;
    }

    /*
     * Well that was fun, NOT.  Now they want a list of everybody in
     * their WATCH list AND if they are online or offline? Sheesh,
     * greedy aren't we?
     */
    if (*s == 'L' || *s == 'l')
    {
      const struct Client *target_p = NULL;

      if (list_requested & 0x2)
        continue;

      list_requested |= 0x2;

      DLINK_FOREACH(ptr, source_p->localClient->watches.head)
      {
        const struct Watch *anptr = ptr->data;

        if ((target_p = find_person(source_p, anptr->nick)))
          sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
                     target_p->name, target_p->username,
                     target_p->host, target_p->tsinfo);
        /*
         * But actually, only show them offline if it's a capital
         * 'L' (full list wanted).
         */
        else if (*s == 'L')
          sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
                     source_p->name, anptr->nick,
                     "*", "*", anptr->lasttime);
      }

      sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
                 me.name, source_p->name, *s);
      continue;
    }

    /* Hmm.. unknown prefix character.. Ignore it. :-) */
  }
}

static struct Message watch_msgtab = {
  "WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
  { m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&watch_msgtab);
  add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
}

static void
module_exit(void)
{
  mod_del_cmd(&watch_msgtab);
  delete_isupport("WATCH");
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	1793
Committed:	Sun Mar 31 14:06:08 2013 UTC (13 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	7381 byte(s)
Log Message:	- Replaced all occurrences of ircsprintf with sprintf/snprintf and killed sprintf_irc.(c\|h)
#	Content
1	/*
2	* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	* m_watch.c: Maintains notify list
4	*
5	* Copyright (C) 1997 Jukka Santala (Donwulff)
6	* Copyright (C) 2005 by the Hybrid Development Team.
7	*
8	* This program is free software; you can redistribute it and/or modify
9	* it under the terms of the GNU General Public License as published by
10	* the Free Software Foundation; either version 2 of the License, or
11	* (at your option) any later version.
12	*
13	* This program is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.
17	*
18	* You should have received a copy of the GNU General Public License
19	* along with this program; if not, write to the Free Software
20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21	* USA
22	*
23	* $Id$
24	*/
25
26	#include "stdinc.h"
27	#include "client.h"
28	#include "irc_string.h"
29	#include "ircd.h"
30	#include "numeric.h"
31	#include "conf.h"
32	#include "send.h"
33	#include "parse.h"
34	#include "modules.h"
35	#include "s_user.h"
36	#include "watch.h"
37
38
39	/*
40	* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
41	* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
42	* RPL_WATCHOFF - Succesfully removed from WATCH-list.
43	* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
44	*/
45	static void
46	show_watch(struct Client client_p, const char name,
47	unsigned int rpl1, unsigned int rpl2)
48	{
49	const struct Client *target_p = NULL;
50
51	if ((target_p = find_person(client_p, name)))
52	sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
53	target_p->name, target_p->username,
54	target_p->host, target_p->tsinfo);
55	else
56	sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
57	name, "", "", 0);
58	}
59
60	/*
61	* m_watch()
62	*
63	* parv[0] = sender prefix
64	* parv[1] = watch options
65	*/
66	static void
67	m_watch(struct Client client_p, struct Client source_p, int parc, char *parv[])
68	{
69	dlink_node *ptr = NULL;
70	char *s = NULL;
71	char *p = NULL;
72	char *user;
73	char def[2] = "l";
74	unsigned int list_requested = 0;
75
76	/*
77	* Default to 'l' - list who's currently online
78	*/
79	if (parc < 2)
80	parv[1] = def;
81
82	for (s = strtoken(&p, parv[1], ", "); s;
83	s = strtoken(&p, NULL, ", "))
84	{
85	if ((user = strchr(s, '!')))
86	user++ = '\0'; / Not used */
87
88	/*
89	* Prefix of "+", they want to add a name to their WATCH
90	* list.
91	*/
92	if (*s == '+')
93	{
94	if (*(s + 1) != '\0')
95	{
96	if (dlink_list_length(&source_p->localClient->watches) >=
97	ConfigFileEntry.max_watch)
98	{
99	sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
100	source_p->name, s + 1, ConfigFileEntry.max_watch);
101	continue;
102	}
103
104	watch_add_to_hash_table(s + 1, source_p);
105	}
106
107	show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
108	continue;
109	}
110
111	/*
112	* Prefix of "-", coward wants to remove somebody from their
113	* WATCH list. So do it. :-)
114	*/
115	if (*s == '-')
116	{
117	watch_del_from_hash_table(s + 1, source_p);
118	show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
119	continue;
120	}
121
122	/*
123	* Fancy "C" or "c", they want to nuke their WATCH list and start
124	* over, so be it.
125	*/
126	if (s == 'C' \|\| s == 'c')
127	{
128	watch_del_watch_list(source_p);
129	continue;
130	}
131
132	/*
133	* Now comes the fun stuff, "S" or "s" returns a status report of
134	* their WATCH list. I imagine this could be CPU intensive if
135	* it's done alot, perhaps an auto-lag on this?
136	*/
137	if (s == 'S' \|\| s == 's')
138	{
139	char buf[IRCD_BUFSIZE] = { '\0' };
140	const struct Watch *anptr = NULL;
141	unsigned int count = 0;
142
143	if (list_requested & 0x1)
144	continue;
145
146	list_requested \|= 0x1;
147
148	/*
149	* Send a list of how many users they have on their WATCH list
150	* and how many WATCH lists they are on.
151	*/
152	if ((anptr = watch_find_hash(source_p->name)))
153	count = dlink_list_length(&anptr->watched_by);
154
155	sendto_one(source_p, form_str(RPL_WATCHSTAT),
156	me.name, source_p->name,
157	dlink_list_length(&source_p->localClient->watches), count);
158
159	/*
160	* Send a list of everybody in their WATCH list. Be careful
161	* not to buffer overflow.
162	*/
163	if ((ptr = source_p->localClient->watches.head) == NULL)
164	{
165	sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
166	me.name, source_p->name, *s);
167	continue;
168	}
169
170	anptr = ptr->data;
171	strlcpy(buf, anptr->nick, sizeof(buf));
172
173	count = strlen(source_p->name) + strlen(me.name) + 10 +
174	strlen(buf);
175
176	while ((ptr = ptr->next))
177	{
178	anptr = ptr->data;
179
180	if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
181	{
182	sendto_one(source_p, form_str(RPL_WATCHLIST),
183	me.name, source_p->name, buf);
184	buf[0] = '\0';
185	count = strlen(source_p->name) + strlen(me.name) + 10;
186	}
187
188	strcat(buf, " ");
189	strcat(buf, anptr->nick);
190	count += (strlen(anptr->nick) + 1);
191	}
192
193	sendto_one(source_p, form_str(RPL_WATCHLIST),
194	me.name, source_p->name, buf);
195	sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
196	me.name, source_p->name, *s);
197	continue;
198	}
199
200	/*
201	* Well that was fun, NOT. Now they want a list of everybody in
202	* their WATCH list AND if they are online or offline? Sheesh,
203	* greedy aren't we?
204	*/
205	if (s == 'L' \|\| s == 'l')
206	{
207	const struct Client *target_p = NULL;
208
209	if (list_requested & 0x2)
210	continue;
211
212	list_requested \|= 0x2;
213
214	DLINK_FOREACH(ptr, source_p->localClient->watches.head)
215	{
216	const struct Watch *anptr = ptr->data;
217
218	if ((target_p = find_person(source_p, anptr->nick)))
219	sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
220	target_p->name, target_p->username,
221	target_p->host, target_p->tsinfo);
222	/*
223	* But actually, only show them offline if it's a capital
224	* 'L' (full list wanted).
225	*/
226	else if (*s == 'L')
227	sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
228	source_p->name, anptr->nick,
229	"", "", anptr->lasttime);
230	}
231
232	sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
233	me.name, source_p->name, *s);
234	continue;
235	}
236
237	/* Hmm.. unknown prefix character.. Ignore it. :-) */
238	}
239	}
240
241	static struct Message watch_msgtab = {
242	"WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
243	{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
244	};
245
246	static void
247	module_init(void)
248	{
249	mod_add_cmd(&watch_msgtab);
250	add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
251	}
252
253	static void
254	module_exit(void)
255	{
256	mod_del_cmd(&watch_msgtab);
257	delete_isupport("WATCH");
258	}
259
260	struct module module_entry = {
261	.node = { NULL, NULL, NULL },
262	.name = NULL,
263	.version = "$Revision$",
264	.handle = NULL,
265	.modinit = module_init,
266	.modexit = module_exit,
267	.flags = 0
268	};