ircd-hybrid-8/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 "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "numeric.h"
#include "s_conf.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_user.h"
#include "watch.h"

static void m_watch(struct Client *, struct Client *, int, char *[]);

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

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&watch_msgtab);
  add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
}

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

const char *_version = "$Revision$";
#endif

/*
 * 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->lasttime);
  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. :-) */
  }
}
Revision:	1029
Committed:	Sun Nov 8 13:10:50 2009 UTC (16 years, 8 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-7.3/modules/m_watch.c*
File size:	7360 byte(s)
Log Message:	- branch off trunk to create 7.3 branch
#	User	Rev	Content
1	michael	876	/*
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	michael	953	* $Id$
24	michael	876	*/
25
26			#include "stdinc.h"
27			#include "handlers.h"
28			#include "client.h"
29			#include "irc_string.h"
30			#include "sprintf_irc.h"
31			#include "ircd.h"
32			#include "numeric.h"
33			#include "s_conf.h"
34			#include "send.h"
35			#include "msg.h"
36			#include "parse.h"
37			#include "modules.h"
38			#include "s_user.h"
39			#include "watch.h"
40
41			static void m_watch(struct Client , struct Client , int, char *[]);
42
43			struct Message watch_msgtab = {
44			"WATCH", 0, 0, 0, 0, MFLG_SLOW, 0,
45	michael	972	{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
46	michael	876	};
47
48			#ifndef STATIC_MODULES
49			void
50			_modinit(void)
51			{
52			mod_add_cmd(&watch_msgtab);
53			add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
54			}
55
56			void
57			_moddeinit(void)
58			{
59			mod_del_cmd(&watch_msgtab);
60			delete_isupport("WATCH");
61			}
62
63	michael	879	const char *_version = "$Revision$";
64	michael	876	#endif
65
66			/*
67			* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
68			* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
69			* RPL_WATCHOFF - Succesfully removed from WATCH-list.
70			* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
71			*/
72			static void
73			show_watch(struct Client client_p, const char name,
74			unsigned int rpl1, unsigned int rpl2)
75			{
76			const struct Client *target_p = NULL;
77
78			if ((target_p = find_person(client_p, name)))
79			sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
80			target_p->name, target_p->username,
81			target_p->host, target_p->lasttime);
82			else
83			sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
84			name, "", "", 0);
85			}
86
87			/*
88			* m_watch()
89			*
90			* parv[0] = sender prefix
91			* parv[1] = watch options
92			*/
93			static void
94			m_watch(struct Client client_p, struct Client source_p, int parc, char *parv[])
95			{
96			dlink_node *ptr = NULL;
97			char *s = NULL;
98			char *p = NULL;
99			char *user;
100			char def[2] = "l";
101			unsigned int list_requested = 0;
102
103			/*
104			* Default to 'l' - list who's currently online
105			*/
106			if (parc < 2)
107			parv[1] = def;
108
109			for (s = strtoken(&p, parv[1], ", "); s;
110			s = strtoken(&p, NULL, ", "))
111			{
112			if ((user = strchr(s, '!')))
113			user++ = '\0'; / Not used */
114
115			/*
116			* Prefix of "+", they want to add a name to their WATCH
117			* list.
118			*/
119			if (*s == '+')
120			{
121			if (*(s + 1) != '\0')
122			{
123			if (dlink_list_length(&source_p->localClient->watches) >=
124			ConfigFileEntry.max_watch)
125			{
126			sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
127			source_p->name, s + 1, ConfigFileEntry.max_watch);
128			continue;
129			}
130
131			watch_add_to_hash_table(s + 1, source_p);
132			}
133
134			show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
135			continue;
136			}
137
138			/*
139			* Prefix of "-", coward wants to remove somebody from their
140			* WATCH list. So do it. :-)
141			*/
142			if (*s == '-')
143			{
144			watch_del_from_hash_table(s + 1, source_p);
145			show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
146			continue;
147			}
148
149			/*
150			* Fancy "C" or "c", they want to nuke their WATCH list and start
151			* over, so be it.
152			*/
153			if (s == 'C' \|\| s == 'c')
154			{
155			watch_del_watch_list(source_p);
156			continue;
157			}
158
159			/*
160			* Now comes the fun stuff, "S" or "s" returns a status report of
161			* their WATCH list. I imagine this could be CPU intensive if
162			* it's done alot, perhaps an auto-lag on this?
163			*/
164			if (s == 'S' \|\| s == 's')
165			{
166			char buf[IRCD_BUFSIZE] = { '\0' };
167			const struct Watch *anptr = NULL;
168			unsigned int count = 0;
169
170			if (list_requested & 0x1)
171			continue;
172
173			list_requested \|= 0x1;
174
175			/*
176			* Send a list of how many users they have on their WATCH list
177			* and how many WATCH lists they are on.
178			*/
179			if ((anptr = watch_find_hash(source_p->name)))
180			count = dlink_list_length(&anptr->watched_by);
181
182			sendto_one(source_p, form_str(RPL_WATCHSTAT),
183			me.name, source_p->name,
184			dlink_list_length(&source_p->localClient->watches), count);
185
186			/*
187			* Send a list of everybody in their WATCH list. Be careful
188			* not to buffer overflow.
189			*/
190			if ((ptr = source_p->localClient->watches.head) == NULL)
191			{
192			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
193			me.name, source_p->name, *s);
194			continue;
195			}
196
197			anptr = ptr->data;
198			strlcpy(buf, anptr->nick, sizeof(buf));
199
200			count = strlen(source_p->name) + strlen(me.name) + 10 +
201			strlen(buf);
202
203			while ((ptr = ptr->next))
204			{
205			anptr = ptr->data;
206
207			if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
208			{
209			sendto_one(source_p, form_str(RPL_WATCHLIST),
210			me.name, source_p->name, buf);
211			buf[0] = '\0';
212			count = strlen(source_p->name) + strlen(me.name) + 10;
213			}
214
215			strcat(buf, " ");
216			strcat(buf, anptr->nick);
217			count += (strlen(anptr->nick) + 1);
218			}
219
220			sendto_one(source_p, form_str(RPL_WATCHLIST),
221			me.name, source_p->name, buf);
222			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
223			me.name, source_p->name, *s);
224			continue;
225			}
226
227			/*
228			* Well that was fun, NOT. Now they want a list of everybody in
229			* their WATCH list AND if they are online or offline? Sheesh,
230			* greedy aren't we?
231			*/
232			if (s == 'L' \|\| s == 'l')
233			{
234			const struct Client *target_p = NULL;
235
236			if (list_requested & 0x2)
237			continue;
238
239			list_requested \|= 0x2;
240
241			DLINK_FOREACH(ptr, source_p->localClient->watches.head)
242			{
243			const struct Watch *anptr = ptr->data;
244
245			if ((target_p = find_person(source_p, anptr->nick)))
246			sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
247			target_p->name, target_p->username,
248			target_p->host, target_p->tsinfo);
249			/*
250			* But actually, only show them offline if it's a capital
251			* 'L' (full list wanted).
252			*/
253			else if (*s == 'L')
254			sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
255			source_p->name, anptr->nick,
256			"", "", anptr->lasttime);
257			}
258
259			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
260			me.name, source_p->name, *s);
261			continue;
262			}
263
264			/* Hmm.. unknown prefix character.. Ignore it. :-) */
265			}
266			}