8.1.x/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 "sprintf_irc.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:	1592
Committed:	Sat Oct 27 21:02:32 2012 UTC (13 years, 8 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/trunk/modules/m_watch.c*
File size:	7406 byte(s)
Log Message:	- Second time's the charm? Moving svnroot/ircd-hybrid-8 to svnroot/ircd-hybrid/trunk
#	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 "client.h"
28			#include "irc_string.h"
29			#include "sprintf_irc.h"
30			#include "ircd.h"
31			#include "numeric.h"
32	michael	1309	#include "conf.h"
33	michael	876	#include "send.h"
34			#include "parse.h"
35			#include "modules.h"
36			#include "s_user.h"
37			#include "watch.h"
38
39
40			/*
41			* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
42			* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
43			* RPL_WATCHOFF - Succesfully removed from WATCH-list.
44			* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
45			*/
46			static void
47			show_watch(struct Client client_p, const char name,
48			unsigned int rpl1, unsigned int rpl2)
49			{
50			const struct Client *target_p = NULL;
51
52			if ((target_p = find_person(client_p, name)))
53			sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
54			target_p->name, target_p->username,
55	michael	1241	target_p->host, target_p->tsinfo);
56	michael	876	else
57			sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
58			name, "", "", 0);
59			}
60
61			/*
62			* m_watch()
63			*
64			* parv[0] = sender prefix
65			* parv[1] = watch options
66			*/
67			static void
68			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			sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
101			source_p->name, s + 1, ConfigFileEntry.max_watch);
102			continue;
103			}
104
105			watch_add_to_hash_table(s + 1, source_p);
106			}
107
108			show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
109			continue;
110			}
111
112			/*
113			* Prefix of "-", coward wants to remove somebody from their
114			* WATCH list. So do it. :-)
115			*/
116			if (*s == '-')
117			{
118			watch_del_from_hash_table(s + 1, source_p);
119			show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
120			continue;
121			}
122
123			/*
124			* Fancy "C" or "c", they want to nuke their WATCH list and start
125			* over, so be it.
126			*/
127			if (s == 'C' \|\| s == 'c')
128			{
129			watch_del_watch_list(source_p);
130			continue;
131			}
132
133			/*
134			* Now comes the fun stuff, "S" or "s" returns a status report of
135			* their WATCH list. I imagine this could be CPU intensive if
136			* it's done alot, perhaps an auto-lag on this?
137			*/
138			if (s == 'S' \|\| s == 's')
139			{
140			char buf[IRCD_BUFSIZE] = { '\0' };
141			const struct Watch *anptr = NULL;
142			unsigned int count = 0;
143
144			if (list_requested & 0x1)
145			continue;
146
147			list_requested \|= 0x1;
148
149			/*
150			* Send a list of how many users they have on their WATCH list
151			* and how many WATCH lists they are on.
152			*/
153			if ((anptr = watch_find_hash(source_p->name)))
154			count = dlink_list_length(&anptr->watched_by);
155
156			sendto_one(source_p, form_str(RPL_WATCHSTAT),
157			me.name, source_p->name,
158			dlink_list_length(&source_p->localClient->watches), count);
159
160			/*
161			* Send a list of everybody in their WATCH list. Be careful
162			* not to buffer overflow.
163			*/
164			if ((ptr = source_p->localClient->watches.head) == NULL)
165			{
166			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
167			me.name, source_p->name, *s);
168			continue;
169			}
170
171			anptr = ptr->data;
172			strlcpy(buf, anptr->nick, sizeof(buf));
173
174			count = strlen(source_p->name) + strlen(me.name) + 10 +
175			strlen(buf);
176
177			while ((ptr = ptr->next))
178			{
179			anptr = ptr->data;
180
181			if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
182			{
183			sendto_one(source_p, form_str(RPL_WATCHLIST),
184			me.name, source_p->name, buf);
185			buf[0] = '\0';
186			count = strlen(source_p->name) + strlen(me.name) + 10;
187			}
188
189			strcat(buf, " ");
190			strcat(buf, anptr->nick);
191			count += (strlen(anptr->nick) + 1);
192			}
193
194			sendto_one(source_p, form_str(RPL_WATCHLIST),
195			me.name, source_p->name, buf);
196			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
197			me.name, source_p->name, *s);
198			continue;
199			}
200
201			/*
202			* Well that was fun, NOT. Now they want a list of everybody in
203			* their WATCH list AND if they are online or offline? Sheesh,
204			* greedy aren't we?
205			*/
206			if (s == 'L' \|\| s == 'l')
207			{
208			const struct Client *target_p = NULL;
209
210			if (list_requested & 0x2)
211			continue;
212
213			list_requested \|= 0x2;
214
215			DLINK_FOREACH(ptr, source_p->localClient->watches.head)
216			{
217			const struct Watch *anptr = ptr->data;
218
219			if ((target_p = find_person(source_p, anptr->nick)))
220			sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
221			target_p->name, target_p->username,
222			target_p->host, target_p->tsinfo);
223			/*
224			* But actually, only show them offline if it's a capital
225			* 'L' (full list wanted).
226			*/
227			else if (*s == 'L')
228			sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
229			source_p->name, anptr->nick,
230			"", "", anptr->lasttime);
231			}
232
233			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
234			me.name, source_p->name, *s);
235			continue;
236			}
237
238			/* Hmm.. unknown prefix character.. Ignore it. :-) */
239			}
240			}
241	michael	1230
242			static struct Message watch_msgtab = {
243			"WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
244			{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
245			};
246
247			static void
248			module_init(void)
249			{
250			mod_add_cmd(&watch_msgtab);
251			add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
252			}
253
254			static void
255			module_exit(void)
256			{
257			mod_del_cmd(&watch_msgtab);
258			delete_isupport("WATCH");
259			}
260
261			struct module module_entry = {
262			.node = { NULL, NULL, NULL },
263			.name = NULL,
264			.version = "$Revision$",
265			.handle = NULL,
266			.modinit = module_init,
267			.modexit = module_exit,
268			.flags = 0
269			};