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) >=
            ConfigGeneral.max_watch)
        {
          sendto_one_numeric(source_p, &me, ERR_TOOMANYWATCH, s + 1, ConfigGeneral.max_watch);
          continue;
        }

        if (valid_nickname(s + 1, 1))
          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", NULL, 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, ConfigGeneral.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:	4545
Committed:	Fri Aug 22 08:46:13 2014 UTC (11 years ago) by michael
Content type:	text/x-csrc
File size:	7548 byte(s)
Log Message:	- Implemented pseudo {} blocks (service aliases) - Fixed compile warnings with -Wmissing-field-initializers
#	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	ConfigGeneral.max_watch)
104	{
105	sendto_one_numeric(source_p, &me, ERR_TOOMANYWATCH, s + 1, ConfigGeneral.max_watch);
106	continue;
107	}
108
109	if (valid_nickname(s + 1, 1))
110	watch_add_to_hash_table(s + 1, source_p);
111	}
112
113	show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
114	continue;
115	}
116
117	/*
118	* Prefix of "-", coward wants to remove somebody from their
119	* WATCH list. So do it. :-)
120	*/
121	if (*s == '-')
122	{
123	watch_del_from_hash_table(s + 1, source_p);
124	show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
125	continue;
126	}
127
128	/*
129	* Fancy "C" or "c", they want to nuke their WATCH list and start
130	* over, so be it.
131	*/
132	if (s == 'C' \|\| s == 'c')
133	{
134	watch_del_watch_list(source_p);
135	continue;
136	}
137
138	/*
139	* Now comes the fun stuff, "S" or "s" returns a status report of
140	* their WATCH list. I imagine this could be CPU intensive if
141	* it's done alot, perhaps an auto-lag on this?
142	*/
143	if (s == 'S' \|\| s == 's')
144	{
145	char buf[IRCD_BUFSIZE] = "";
146	const struct Watch *anptr = NULL;
147	unsigned int count = 0;
148
149	if (list_requested & 0x1)
150	continue;
151
152	list_requested \|= 0x1;
153
154	/*
155	* Send a list of how many users they have on their WATCH list
156	* and how many WATCH lists they are on.
157	*/
158	if ((anptr = watch_find_hash(source_p->name)))
159	count = dlink_list_length(&anptr->watched_by);
160
161	sendto_one_numeric(source_p, &me, RPL_WATCHSTAT,
162	dlink_list_length(&source_p->localClient->watches), count);
163
164	/*
165	* Send a list of everybody in their WATCH list. Be careful
166	* not to buffer overflow.
167	*/
168	if ((ptr = source_p->localClient->watches.head) == NULL)
169	{
170	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
171	continue;
172	}
173
174	anptr = ptr->data;
175	strlcpy(buf, anptr->nick, sizeof(buf));
176
177	count = strlen(source_p->name) + strlen(me.name) + 10 +
178	strlen(buf);
179
180	while ((ptr = ptr->next))
181	{
182	anptr = ptr->data;
183
184	if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
185	{
186	sendto_one_numeric(source_p, &me, RPL_WATCHLIST, buf);
187	buf[0] = '\0';
188	count = strlen(source_p->name) + strlen(me.name) + 10;
189	}
190
191	strlcat(buf, " ", sizeof(buf));
192	strlcat(buf, anptr->nick, sizeof(buf));
193	count += (strlen(anptr->nick) + 1);
194	}
195
196	sendto_one_numeric(source_p, &me, RPL_WATCHLIST, buf);
197	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *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_numeric(source_p, &me, RPL_NOWON,
221	target_p->name, target_p->username,
222	target_p->host, target_p->tsinfo);
223
224	/*
225	* But actually, only show them offline if it's a capital
226	* 'L' (full list wanted).
227	*/
228	else if (*s == 'L')
229	sendto_one_numeric(source_p, &me, RPL_NOWOFF, anptr->nick,
230	"", "", anptr->lasttime);
231	}
232
233	sendto_one_numeric(source_p, &me, RPL_ENDOFWATCHLIST, *s);
234	continue;
235	}
236
237	/* Hmm.. unknown prefix character.. Ignore it. :-) */
238	}
239
240	return 0;
241	}
242
243	static struct Message watch_msgtab =
244	{
245	"WATCH", NULL, 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, ConfigGeneral.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	{
265	.node = { NULL, NULL, NULL },
266	.name = NULL,
267	.version = "$Revision$",
268	.handle = NULL,
269	.modinit = module_init,
270	.modexit = module_exit,
271	.flags = 0
272	};