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"


/*
 * 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. :-) */
  }
}

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:	1230
Committed:	Thu Sep 22 19:41:19 2011 UTC (14 years, 10 months ago) by michael
Content type:	text/x-csrc
File size:	7449 byte(s)
Log Message:	- cleanup module loader. Make module api more flexible
#	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
42			/*
43			* RPL_NOWON - Online at the moment (Succesfully added to WATCH-list)
44			* RPL_NOWOFF - Offline at the moment (Succesfully added to WATCH-list)
45			* RPL_WATCHOFF - Succesfully removed from WATCH-list.
46			* ERR_TOOMANYWATCH - Take a guess :> Too many WATCH entries.
47			*/
48			static void
49			show_watch(struct Client client_p, const char name,
50			unsigned int rpl1, unsigned int rpl2)
51			{
52			const struct Client *target_p = NULL;
53
54			if ((target_p = find_person(client_p, name)))
55			sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
56			target_p->name, target_p->username,
57			target_p->host, target_p->lasttime);
58			else
59			sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
60			name, "", "", 0);
61			}
62
63			/*
64			* m_watch()
65			*
66			* parv[0] = sender prefix
67			* parv[1] = watch options
68			*/
69			static void
70			m_watch(struct Client client_p, struct Client source_p, int parc, char *parv[])
71			{
72			dlink_node *ptr = NULL;
73			char *s = NULL;
74			char *p = NULL;
75			char *user;
76			char def[2] = "l";
77			unsigned int list_requested = 0;
78
79			/*
80			* Default to 'l' - list who's currently online
81			*/
82			if (parc < 2)
83			parv[1] = def;
84
85			for (s = strtoken(&p, parv[1], ", "); s;
86			s = strtoken(&p, NULL, ", "))
87			{
88			if ((user = strchr(s, '!')))
89			user++ = '\0'; / Not used */
90
91			/*
92			* Prefix of "+", they want to add a name to their WATCH
93			* list.
94			*/
95			if (*s == '+')
96			{
97			if (*(s + 1) != '\0')
98			{
99			if (dlink_list_length(&source_p->localClient->watches) >=
100			ConfigFileEntry.max_watch)
101			{
102			sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
103			source_p->name, s + 1, ConfigFileEntry.max_watch);
104			continue;
105			}
106
107			watch_add_to_hash_table(s + 1, source_p);
108			}
109
110			show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
111			continue;
112			}
113
114			/*
115			* Prefix of "-", coward wants to remove somebody from their
116			* WATCH list. So do it. :-)
117			*/
118			if (*s == '-')
119			{
120			watch_del_from_hash_table(s + 1, source_p);
121			show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
122			continue;
123			}
124
125			/*
126			* Fancy "C" or "c", they want to nuke their WATCH list and start
127			* over, so be it.
128			*/
129			if (s == 'C' \|\| s == 'c')
130			{
131			watch_del_watch_list(source_p);
132			continue;
133			}
134
135			/*
136			* Now comes the fun stuff, "S" or "s" returns a status report of
137			* their WATCH list. I imagine this could be CPU intensive if
138			* it's done alot, perhaps an auto-lag on this?
139			*/
140			if (s == 'S' \|\| s == 's')
141			{
142			char buf[IRCD_BUFSIZE] = { '\0' };
143			const struct Watch *anptr = NULL;
144			unsigned int count = 0;
145
146			if (list_requested & 0x1)
147			continue;
148
149			list_requested \|= 0x1;
150
151			/*
152			* Send a list of how many users they have on their WATCH list
153			* and how many WATCH lists they are on.
154			*/
155			if ((anptr = watch_find_hash(source_p->name)))
156			count = dlink_list_length(&anptr->watched_by);
157
158			sendto_one(source_p, form_str(RPL_WATCHSTAT),
159			me.name, source_p->name,
160			dlink_list_length(&source_p->localClient->watches), count);
161
162			/*
163			* Send a list of everybody in their WATCH list. Be careful
164			* not to buffer overflow.
165			*/
166			if ((ptr = source_p->localClient->watches.head) == NULL)
167			{
168			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
169			me.name, source_p->name, *s);
170			continue;
171			}
172
173			anptr = ptr->data;
174			strlcpy(buf, anptr->nick, sizeof(buf));
175
176			count = strlen(source_p->name) + strlen(me.name) + 10 +
177			strlen(buf);
178
179			while ((ptr = ptr->next))
180			{
181			anptr = ptr->data;
182
183			if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
184			{
185			sendto_one(source_p, form_str(RPL_WATCHLIST),
186			me.name, source_p->name, buf);
187			buf[0] = '\0';
188			count = strlen(source_p->name) + strlen(me.name) + 10;
189			}
190
191			strcat(buf, " ");
192			strcat(buf, anptr->nick);
193			count += (strlen(anptr->nick) + 1);
194			}
195
196			sendto_one(source_p, form_str(RPL_WATCHLIST),
197			me.name, source_p->name, buf);
198			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
199			me.name, source_p->name, *s);
200			continue;
201			}
202
203			/*
204			* Well that was fun, NOT. Now they want a list of everybody in
205			* their WATCH list AND if they are online or offline? Sheesh,
206			* greedy aren't we?
207			*/
208			if (s == 'L' \|\| s == 'l')
209			{
210			const struct Client *target_p = NULL;
211
212			if (list_requested & 0x2)
213			continue;
214
215			list_requested \|= 0x2;
216
217			DLINK_FOREACH(ptr, source_p->localClient->watches.head)
218			{
219			const struct Watch *anptr = ptr->data;
220
221			if ((target_p = find_person(source_p, anptr->nick)))
222			sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
223			target_p->name, target_p->username,
224			target_p->host, target_p->tsinfo);
225			/*
226			* But actually, only show them offline if it's a capital
227			* 'L' (full list wanted).
228			*/
229			else if (*s == 'L')
230			sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
231			source_p->name, anptr->nick,
232			"", "", anptr->lasttime);
233			}
234
235			sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
236			me.name, source_p->name, *s);
237			continue;
238			}
239
240			/* Hmm.. unknown prefix character.. Ignore it. :-) */
241			}
242			}
243	michael	1230
244			static struct Message watch_msgtab = {
245			"WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
246			{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
247			};
248
249			static void
250			module_init(void)
251			{
252			mod_add_cmd(&watch_msgtab);
253			add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
254			}
255
256			static void
257			module_exit(void)
258			{
259			mod_del_cmd(&watch_msgtab);
260			delete_isupport("WATCH");
261			}
262
263			struct module module_entry = {
264			.node = { NULL, NULL, NULL },
265			.name = NULL,
266			.version = "$Revision$",
267			.handle = NULL,
268			.modinit = module_init,
269			.modexit = module_exit,
270			.flags = 0
271			};