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 }
};

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 = "$Revision$";

/*
 * 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:	1156
Committed:	Tue Aug 9 20:29:20 2011 UTC (14 years, 11 months ago) by michael
Content type:	text/x-csrc
File size:	7330 byte(s)
Log Message:	- create ircd-hybrid-8 "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			void
49			_modinit(void)
50			{
51			mod_add_cmd(&watch_msgtab);
52			add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
53			}
54
55			void
56			_moddeinit(void)
57			{
58			mod_del_cmd(&watch_msgtab);
59			delete_isupport("WATCH");
60			}
61
62	michael	879	const char *_version = "$Revision$";
63	michael	876
64			/*
65			* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
66			* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
67			* RPL_WATCHOFF - Succesfully removed from WATCH-list.
68			* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
69			*/
70			static void
71			show_watch(struct Client client_p, const char name,
72			unsigned int rpl1, unsigned int rpl2)
73			{
74			const struct Client *target_p = NULL;
75
76			if ((target_p = find_person(client_p, name)))
77			sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
78			target_p->name, target_p->username,
79			target_p->host, target_p->lasttime);
80			else
81			sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
82			name, "", "", 0);
83			}
84
85			/*
86			* m_watch()
87			*
88			* parv[0] = sender prefix
89			* parv[1] = watch options
90			*/
91			static void
92			m_watch(struct Client client_p, struct Client source_p, int parc, char *parv[])
93			{
94			dlink_node *ptr = NULL;
95			char *s = NULL;
96			char *p = NULL;
97			char *user;
98			char def[2] = "l";
99			unsigned int list_requested = 0;
100
101			/*
102			* Default to 'l' - list who's currently online
103			*/
104			if (parc < 2)
105			parv[1] = def;
106
107			for (s = strtoken(&p, parv[1], ", "); s;
108			s = strtoken(&p, NULL, ", "))
109			{
110			if ((user = strchr(s, '!')))
111			user++ = '\0'; / Not used */
112
113			/*
114			* Prefix of "+", they want to add a name to their WATCH
115			* list.
116			*/
117			if (*s == '+')
118			{
119			if (*(s + 1) != '\0')
120			{
121			if (dlink_list_length(&source_p->localClient->watches) >=
122			ConfigFileEntry.max_watch)
123			{
124			sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
125			source_p->name, s + 1, ConfigFileEntry.max_watch);
126			continue;
127			}
128
129			watch_add_to_hash_table(s + 1, source_p);
130			}
131
132			show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
133			continue;
134			}
135
136			/*
137			* Prefix of "-", coward wants to remove somebody from their
138			* WATCH list. So do it. :-)
139			*/
140			if (*s == '-')
141			{
142			watch_del_from_hash_table(s + 1, source_p);
143			show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
144			continue;
145			}
146
147			/*
148			* Fancy "C" or "c", they want to nuke their WATCH list and start
149			* over, so be it.
150			*/
151			if (s == 'C' \|\| s == 'c')
152			{
153			watch_del_watch_list(source_p);
154			continue;
155			}
156
157			/*
158			* Now comes the fun stuff, "S" or "s" returns a status report of
159			* their WATCH list. I imagine this could be CPU intensive if
160			* it's done alot, perhaps an auto-lag on this?
161			*/
162			if (s == 'S' \|\| s == 's')
163			{
164			char buf[IRCD_BUFSIZE] = { '\0' };
165			const struct Watch *anptr = NULL;
166			unsigned int count = 0;
167
168			if (list_requested & 0x1)
169			continue;
170
171			list_requested \|= 0x1;
172
173			/*
174			* Send a list of how many users they have on their WATCH list
175			* and how many WATCH lists they are on.
176			*/
177			if ((anptr = watch_find_hash(source_p->name)))
178			count = dlink_list_length(&anptr->watched_by);
179
180			sendto_one(source_p, form_str(RPL_WATCHSTAT),
181			me.name, source_p->name,
182			dlink_list_length(&source_p->localClient->watches), count);
183
184			/*
185			* Send a list of everybody in their WATCH list. Be careful
186			* not to buffer overflow.
187			*/
188			if ((ptr = source_p->localClient->watches.head) == NULL)
189			{
190			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
191			me.name, source_p->name, *s);
192			continue;
193			}
194
195			anptr = ptr->data;
196			strlcpy(buf, anptr->nick, sizeof(buf));
197
198			count = strlen(source_p->name) + strlen(me.name) + 10 +
199			strlen(buf);
200
201			while ((ptr = ptr->next))
202			{
203			anptr = ptr->data;
204
205			if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
206			{
207			sendto_one(source_p, form_str(RPL_WATCHLIST),
208			me.name, source_p->name, buf);
209			buf[0] = '\0';
210			count = strlen(source_p->name) + strlen(me.name) + 10;
211			}
212
213			strcat(buf, " ");
214			strcat(buf, anptr->nick);
215			count += (strlen(anptr->nick) + 1);
216			}
217
218			sendto_one(source_p, form_str(RPL_WATCHLIST),
219			me.name, source_p->name, buf);
220			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
221			me.name, source_p->name, *s);
222			continue;
223			}
224
225			/*
226			* Well that was fun, NOT. Now they want a list of everybody in
227			* their WATCH list AND if they are online or offline? Sheesh,
228			* greedy aren't we?
229			*/
230			if (s == 'L' \|\| s == 'l')
231			{
232			const struct Client *target_p = NULL;
233
234			if (list_requested & 0x2)
235			continue;
236
237			list_requested \|= 0x2;
238
239			DLINK_FOREACH(ptr, source_p->localClient->watches.head)
240			{
241			const struct Watch *anptr = ptr->data;
242
243			if ((target_p = find_person(source_p, anptr->nick)))
244			sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
245			target_p->name, target_p->username,
246			target_p->host, target_p->tsinfo);
247			/*
248			* But actually, only show them offline if it's a capital
249			* 'L' (full list wanted).
250			*/
251			else if (*s == 'L')
252			sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
253			source_p->name, anptr->nick,
254			"", "", anptr->lasttime);
255			}
256
257			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
258			me.name, source_p->name, *s);
259			continue;
260			}
261
262			/* Hmm.. unknown prefix character.. Ignore it. :-) */
263			}
264			}