trunk/modules/m_watch.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997 Jukka Santala (Donwulff)
 *  Copyright (c) 2000-2014 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file m_watch.c
 * \brief Includes required functions for processing the WATCH command.
 * \version $Id$
 */

#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,
           enum irc_numerics rpl1, enum irc_numerics rpl2)
{
  const struct Client *target_p = NULL;

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

/*
 * m_watch()
 *
 * parv[0] = command
 * parv[1] = watch options
 */
static int
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_numeric(source_p, &me, ERR_TOOMANYWATCH, 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_numeric(source_p, &me, RPL_WATCHSTAT,
                 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_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *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_numeric(source_p, &me, RPL_WATCHLIST, 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_numeric(source_p, &me, RPL_WATCHLIST, buf);
      sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *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_numeric(source_p, &me, RPL_NOWON,
                             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_numeric(source_p, &me, RPL_NOWOFF, anptr->nick,
                             "*", "*", anptr->lasttime);
      }

      sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
      continue;
    }

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

  return 0;
}

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:	3109
Committed:	Thu Mar 6 19:25:12 2014 UTC (11 years, 5 months ago) by michael
Content type:	text/x-csrc
File size:	7111 byte(s)
Log Message:	- Applied Adam's sendto_one_numeric() changes
#	User	Rev	Content
1	michael	876	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	michael	876	*
4	michael	2820	* Copyright (c) 1997 Jukka Santala (Donwulff)
5			* Copyright (c) 2000-2014 ircd-hybrid development team
6	michael	876	*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*/
22
23	michael	2820	/*! \file m_watch.c
24			* \brief Includes required functions for processing the WATCH command.
25			* \version $Id$
26			*/
27
28	michael	876	#include "stdinc.h"
29			#include "client.h"
30			#include "irc_string.h"
31			#include "ircd.h"
32			#include "numeric.h"
33	michael	1309	#include "conf.h"
34	michael	876	#include "send.h"
35			#include "parse.h"
36			#include "modules.h"
37			#include "s_user.h"
38			#include "watch.h"
39
40
41			/*
42			* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
43			* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
44			* RPL_WATCHOFF - Succesfully removed from WATCH-list.
45			* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
46			*/
47			static void
48			show_watch(struct Client client_p, const char name,
49	michael	3109	enum irc_numerics rpl1, enum irc_numerics rpl2)
50	michael	876	{
51			const struct Client *target_p = NULL;
52
53			if ((target_p = find_person(client_p, name)))
54	michael	3109	sendto_one_numeric(client_p, &me, rpl1,
55			target_p->name, target_p->username,
56			target_p->host, target_p->tsinfo);
57	michael	876	else
58	michael	3109	sendto_one_numeric(client_p, &me, rpl2, name, "", "", 0);
59	michael	876	}
60
61			/*
62			* m_watch()
63			*
64	michael	3096	* parv[0] = command
65	michael	876	* parv[1] = watch options
66			*/
67	michael	2820	static int
68	michael	876	m_watch(struct Client client_p, struct Client source_p, int parc, char *parv[])
69			{
70			dlink_node *ptr = NULL;
71			char *s = NULL;
72			char *p = NULL;
73			char *user;
74			char def[2] = "l";
75			unsigned int list_requested = 0;
76
77			/*
78			* Default to 'l' - list who's currently online
79			*/
80			if (parc < 2)
81			parv[1] = def;
82
83			for (s = strtoken(&p, parv[1], ", "); s;
84			s = strtoken(&p, NULL, ", "))
85			{
86			if ((user = strchr(s, '!')))
87			user++ = '\0'; / Not used */
88
89			/*
90			* Prefix of "+", they want to add a name to their WATCH
91			* list.
92			*/
93			if (*s == '+')
94			{
95			if (*(s + 1) != '\0')
96			{
97			if (dlink_list_length(&source_p->localClient->watches) >=
98			ConfigFileEntry.max_watch)
99			{
100	michael	3109	sendto_one_numeric(source_p, &me, ERR_TOOMANYWATCH, s + 1, ConfigFileEntry.max_watch);
101	michael	876	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	michael	3109	sendto_one_numeric(source_p, &me, RPL_WATCHSTAT,
156	michael	876	dlink_list_length(&source_p->localClient->watches), count);
157
158			/*
159			* Send a list of everybody in their WATCH list. Be careful
160			* not to buffer overflow.
161			*/
162			if ((ptr = source_p->localClient->watches.head) == NULL)
163			{
164	michael	3109	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
165	michael	876	continue;
166			}
167
168			anptr = ptr->data;
169			strlcpy(buf, anptr->nick, sizeof(buf));
170
171			count = strlen(source_p->name) + strlen(me.name) + 10 +
172			strlen(buf);
173
174			while ((ptr = ptr->next))
175			{
176			anptr = ptr->data;
177
178			if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
179			{
180	michael	3109	sendto_one_numeric(source_p, &me, RPL_WATCHLIST, buf);
181	michael	876	buf[0] = '\0';
182			count = strlen(source_p->name) + strlen(me.name) + 10;
183			}
184
185			strcat(buf, " ");
186			strcat(buf, anptr->nick);
187			count += (strlen(anptr->nick) + 1);
188			}
189
190	michael	3109	sendto_one_numeric(source_p, &me, RPL_WATCHLIST, buf);
191			sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
192	michael	876	continue;
193			}
194
195			/*
196			* Well that was fun, NOT. Now they want a list of everybody in
197			* their WATCH list AND if they are online or offline? Sheesh,
198			* greedy aren't we?
199			*/
200			if (s == 'L' \|\| s == 'l')
201			{
202			const struct Client *target_p = NULL;
203
204			if (list_requested & 0x2)
205			continue;
206
207			list_requested \|= 0x2;
208
209			DLINK_FOREACH(ptr, source_p->localClient->watches.head)
210			{
211			const struct Watch *anptr = ptr->data;
212
213			if ((target_p = find_person(source_p, anptr->nick)))
214	michael	3109	sendto_one_numeric(source_p, &me, RPL_NOWON,
215			target_p->name, target_p->username,
216			target_p->host, target_p->tsinfo);
217
218	michael	876	/*
219			* But actually, only show them offline if it's a capital
220			* 'L' (full list wanted).
221			*/
222			else if (*s == 'L')
223	michael	3109	sendto_one_numeric(source_p, &me, RPL_NOWOFF, anptr->nick,
224			"", "", anptr->lasttime);
225	michael	876	}
226
227	michael	3109	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
228	michael	876	continue;
229			}
230
231			/* Hmm.. unknown prefix character.. Ignore it. :-) */
232			}
233	michael	2820
234			return 0;
235	michael	876	}
236	michael	1230
237	michael	2820	static struct Message watch_msgtab =
238			{
239	michael	1230	"WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
240			{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
241			};
242
243			static void
244			module_init(void)
245			{
246			mod_add_cmd(&watch_msgtab);
247			add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
248			}
249
250			static void
251			module_exit(void)
252			{
253			mod_del_cmd(&watch_msgtab);
254			delete_isupport("WATCH");
255			}
256
257	michael	2820	struct module module_entry =
258			{
259	michael	1230	.node = { NULL, NULL, NULL },
260			.name = NULL,
261			.version = "$Revision$",
262			.handle = NULL,
263			.modinit = module_init,
264			.modexit = module_exit,
265			.flags = 0
266			};