trunk/modules/m_ison.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_ison.c: Provides a single line answer of whether a user is online.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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 "send.h"
#include "parse.h"
#include "modules.h"


static void
do_ison(struct Client *client_p, struct Client *source_p,
        int parc, char *parv[])
{
  struct Client *target_p = NULL;
  char *nick;
  char *p = NULL;
  char *current_insert_point = NULL;
  char buf[IRCD_BUFSIZE];
  int len;
  int i;
  int done = 0;

  len = snprintf(buf, sizeof(buf), form_str(RPL_ISON), me.name, source_p->name);
  current_insert_point = buf + len;

  /*
   * rfc1459 is ambigious about how to handle ISON
   * this should handle both interpretations.
   */
  for (i = 1; i < parc; i++)
  {
    for (nick = strtoken(&p, parv[i], " "); nick;
         nick = strtoken(&p,    NULL, " "))
    {
      if ((target_p = find_person(client_p, nick)))
      {
        len = strlen(target_p->name);

        if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
        {
          memcpy(current_insert_point, target_p->name, len);
          current_insert_point += len;
          *current_insert_point++ = ' ';
        }
        else
        {
          done = 1;
          break;
        }
      }
    }

    if (done)
      break;
  }

  /*
   *  current_insert_point--;
   *  Do NOT take out the trailing space, it breaks ircII
   *  --Rodder
   */
  *current_insert_point  = '\0';

  sendto_one(source_p, "%s", buf);
}

/*
 * m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
 * with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
 * clients. Designed to reduce number of whois requests. Can process
 * nicknames in batches as long as the maximum buffer length.
 *
 * format:
 * ISON :nicklist
 */
static void
m_ison(struct Client *client_p, struct Client *source_p,
       int parc, char *parv[])
{
  do_ison(client_p, source_p, parc, parv);
}

static struct Message ison_msgtab = {
  "ISON", 0, 0, 2, 1, MFLG_SLOW, 0,
  {m_unregistered, m_ison, m_ignore, m_ignore, m_ison, m_ignore}
};

static void
module_init(void)
{
  mod_add_cmd(&ison_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&ison_msgtab);
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	1728
Committed:	Thu Jan 3 00:16:51 2013 UTC (13 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	3350 byte(s)
Log Message:	- Backported -r1723 [Fixed possible core on USERHOST/ISON/CAPAB which for some reason only happens with glibc with optimization enabled. Reported by Mantas]
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_ison.c: Provides a single line answer of whether a user is online.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
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	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "client.h"
27			#include "irc_string.h"
28			#include "sprintf_irc.h"
29			#include "ircd.h"
30			#include "numeric.h"
31			#include "send.h"
32			#include "parse.h"
33			#include "modules.h"
34
35
36			static void
37	michael	885	do_ison(struct Client client_p, struct Client source_p,
38	adx	30	int parc, char *parv[])
39			{
40			struct Client *target_p = NULL;
41			char *nick;
42	michael	875	char *p = NULL;
43	michael	885	char *current_insert_point = NULL;
44	adx	30	char buf[IRCD_BUFSIZE];
45			int len;
46			int i;
47			int done = 0;
48
49	michael	1233	len = snprintf(buf, sizeof(buf), form_str(RPL_ISON), me.name, source_p->name);
50	adx	30	current_insert_point = buf + len;
51
52	michael	885	/*
53			* rfc1459 is ambigious about how to handle ISON
54	adx	30	* this should handle both interpretations.
55			*/
56			for (i = 1; i < parc; i++)
57			{
58			for (nick = strtoken(&p, parv[i], " "); nick;
59	michael	885	nick = strtoken(&p, NULL, " "))
60	adx	30	{
61			if ((target_p = find_person(client_p, nick)))
62			{
63			len = strlen(target_p->name);
64
65			if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
66			{
67			memcpy(current_insert_point, target_p->name, len);
68			current_insert_point += len;
69			*current_insert_point++ = ' ';
70			}
71			else
72			{
73			done = 1;
74			break;
75			}
76			}
77			}
78
79			if (done)
80			break;
81			}
82
83	michael	885	/*
84			* current_insert_point--;
85	adx	30	* Do NOT take out the trailing space, it breaks ircII
86	michael	885	* --Rodder
87			*/
88			*current_insert_point = '\0';
89	adx	30
90	michael	885	sendto_one(source_p, "%s", buf);
91	adx	30	}
92	michael	1230
93			/*
94			* m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
95			* with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
96			* clients. Designed to reduce number of whois requests. Can process
97			* nicknames in batches as long as the maximum buffer length.
98			*
99			* format:
100			* ISON :nicklist
101			*/
102			static void
103			m_ison(struct Client client_p, struct Client source_p,
104			int parc, char *parv[])
105			{
106			do_ison(client_p, source_p, parc, parv);
107			}
108
109			static struct Message ison_msgtab = {
110	michael	1728	"ISON", 0, 0, 2, 1, MFLG_SLOW, 0,
111	michael	1230	{m_unregistered, m_ison, m_ignore, m_ignore, m_ison, m_ignore}
112			};
113
114			static void
115			module_init(void)
116			{
117			mod_add_cmd(&ison_msgtab);
118			}
119
120			static void
121			module_exit(void)
122			{
123			mod_del_cmd(&ison_msgtab);
124			}
125
126			struct module module_entry = {
127			.node = { NULL, NULL, NULL },
128			.name = NULL,
129			.version = "$Revision$",
130			.handle = NULL,
131			.modinit = module_init,
132			.modexit = module_exit,
133			.flags = 0
134			};