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 "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 *source_p, const char *name,
           enum irc_numerics rpl1, enum irc_numerics rpl2)
{
  const struct Client *target_p = NULL;

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

/*! \brief WATCH command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = watch options
 */
static int
m_watch(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))
      {
        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] = "";
      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;
        }

        strlcat(buf, " ", sizeof(buf));
        strlcat(buf, anptr->nick, sizeof(buf));
        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:	3368
Committed:	Mon Apr 21 14:24:16 2014 UTC (12 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	7508 byte(s)
Log Message:	- Style corrections
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997 Jukka Santala (Donwulff)
5	* Copyright (c) 2000-2014 ircd-hybrid development team
6	*
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	/*! \file m_watch.c
24	* \brief Includes required functions for processing the WATCH command.
25	* \version $Id$
26	*/
27
28	#include "stdinc.h"
29	#include "client.h"
30	#include "irc_string.h"
31	#include "ircd.h"
32	#include "numeric.h"
33	#include "conf.h"
34	#include "send.h"
35	#include "parse.h"
36	#include "modules.h"
37	#include "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 source_p, const char name,
49	enum irc_numerics rpl1, enum irc_numerics rpl2)
50	{
51	const struct Client *target_p = NULL;
52
53	if ((target_p = find_person(source_p, name)))
54	sendto_one_numeric(source_p, &me, rpl1,
55	target_p->name, target_p->username,
56	target_p->host, target_p->tsinfo);
57	else
58	sendto_one_numeric(source_p, &me, rpl2, name, "", "", 0);
59	}
60
61	/*! \brief WATCH command handler
62	*
63	* \param source_p Pointer to allocated Client struct from which the message
64	* originally comes from. This can be a local or remote client.
65	* \param parc Integer holding the number of supplied arguments.
66	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
67	* pointers.
68	* \note Valid arguments for this command are:
69	* - parv[0] = command
70	* - parv[1] = watch options
71	*/
72	static int
73	m_watch(struct Client source_p, int parc, char parv[])
74	{
75	dlink_node *ptr = NULL;
76	char *s = NULL;
77	char *p = NULL;
78	char *user;
79	char def[2] = "l";
80	unsigned int list_requested = 0;
81
82	/*
83	* Default to 'l' - list who's currently online
84	*/
85	if (parc < 2)
86	parv[1] = def;
87
88	for (s = strtoken(&p, parv[1], ", "); s;
89	s = strtoken(&p, NULL, ", "))
90	{
91	if ((user = strchr(s, '!')))
92	user++ = '\0'; / Not used */
93
94	/*
95	* Prefix of "+", they want to add a name to their WATCH
96	* list.
97	*/
98	if (*s == '+')
99	{
100	if (*(s + 1))
101	{
102	if (dlink_list_length(&source_p->localClient->watches) >=
103	ConfigFileEntry.max_watch)
104	{
105	sendto_one_numeric(source_p, &me, ERR_TOOMANYWATCH, s + 1, ConfigFileEntry.max_watch);
106	continue;
107	}
108
109	watch_add_to_hash_table(s + 1, source_p);
110	}
111
112	show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
113	continue;
114	}
115
116	/*
117	* Prefix of "-", coward wants to remove somebody from their
118	* WATCH list. So do it. :-)
119	*/
120	if (*s == '-')
121	{
122	watch_del_from_hash_table(s + 1, source_p);
123	show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
124	continue;
125	}
126
127	/*
128	* Fancy "C" or "c", they want to nuke their WATCH list and start
129	* over, so be it.
130	*/
131	if (s == 'C' \|\| s == 'c')
132	{
133	watch_del_watch_list(source_p);
134	continue;
135	}
136
137	/*
138	* Now comes the fun stuff, "S" or "s" returns a status report of
139	* their WATCH list. I imagine this could be CPU intensive if
140	* it's done alot, perhaps an auto-lag on this?
141	*/
142	if (s == 'S' \|\| s == 's')
143	{
144	char buf[IRCD_BUFSIZE] = "";
145	const struct Watch *anptr = NULL;
146	unsigned int count = 0;
147
148	if (list_requested & 0x1)
149	continue;
150
151	list_requested \|= 0x1;
152
153	/*
154	* Send a list of how many users they have on their WATCH list
155	* and how many WATCH lists they are on.
156	*/
157	if ((anptr = watch_find_hash(source_p->name)))
158	count = dlink_list_length(&anptr->watched_by);
159
160	sendto_one_numeric(source_p, &me, RPL_WATCHSTAT,
161	dlink_list_length(&source_p->localClient->watches), count);
162
163	/*
164	* Send a list of everybody in their WATCH list. Be careful
165	* not to buffer overflow.
166	*/
167	if ((ptr = source_p->localClient->watches.head) == NULL)
168	{
169	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *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_numeric(source_p, &me, RPL_WATCHLIST, buf);
186	buf[0] = '\0';
187	count = strlen(source_p->name) + strlen(me.name) + 10;
188	}
189
190	strlcat(buf, " ", sizeof(buf));
191	strlcat(buf, anptr->nick, sizeof(buf));
192	count += (strlen(anptr->nick) + 1);
193	}
194
195	sendto_one_numeric(source_p, &me, RPL_WATCHLIST, buf);
196	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
197	continue;
198	}
199
200	/*
201	* Well that was fun, NOT. Now they want a list of everybody in
202	* their WATCH list AND if they are online or offline? Sheesh,
203	* greedy aren't we?
204	*/
205	if (s == 'L' \|\| s == 'l')
206	{
207	const struct Client *target_p = NULL;
208
209	if (list_requested & 0x2)
210	continue;
211
212	list_requested \|= 0x2;
213
214	DLINK_FOREACH(ptr, source_p->localClient->watches.head)
215	{
216	const struct Watch *anptr = ptr->data;
217
218	if ((target_p = find_person(source_p, anptr->nick)))
219	sendto_one_numeric(source_p, &me, RPL_NOWON,
220	target_p->name, target_p->username,
221	target_p->host, target_p->tsinfo);
222
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_numeric(source_p, &me, RPL_NOWOFF, anptr->nick,
229	"", "", anptr->lasttime);
230	}
231
232	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
233	continue;
234	}
235
236	/* Hmm.. unknown prefix character.. Ignore it. :-) */
237	}
238
239	return 0;
240	}
241
242	static struct Message watch_msgtab =
243	{
244	"WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
245	{ m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
246	};
247
248	static void
249	module_init(void)
250	{
251	mod_add_cmd(&watch_msgtab);
252	add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
253	}
254
255	static void
256	module_exit(void)
257	{
258	mod_del_cmd(&watch_msgtab);
259	delete_isupport("WATCH");
260	}
261
262	struct module module_entry =
263	{
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	};