elemental-ircd/modules/m_ison.c

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/*
* ircd-ratbox: A slightly useful ircd.
* m_ison.c: Provides a single line answer of whether a user is online.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox 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: m_ison.c 254 2005-09-21 23:35:12Z nenolod $
*/
#include "stdinc.h"
#include "client.h"
#include "match.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h" /* ConfigFileEntry */
#include "s_serv.h" /* uplink/IsCapable */
#include "hash.h"
#include <string.h>
static int m_ison(struct Client *, struct Client *, int, const char **);
struct Message ison_msgtab = {
"ISON", 0, 0, 0, MFLG_SLOW,
{mg_unreg, {m_ison, 2}, mg_ignore, mg_ignore, mg_ignore, {m_ison, 2}}
};
mapi_clist_av1 ison_clist[] = { &ison_msgtab, NULL };
DECLARE_MODULE_AV1(ison, NULL, NULL, ison_clist, NULL, NULL, "$Revision: 254 $");
static char buf[BUFSIZE];
static char buf2[BUFSIZE];
/*
* 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 int
m_ison(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Client *target_p;
char *nick;
char *p;
char *current_insert_point, *current_insert_point2;
int len;
int i;
int done = 0;
current_insert_point2 = buf2;
*buf2 = '\0';
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rb_sprintf(buf, form_str(RPL_ISON), me.name, source_p->name);
len = strlen(buf);
current_insert_point = buf + len;
/* rfc1489 is ambigious about how to handle ISON
* this should handle both interpretations.
*/
for (i = 1; i < parc; i++)
{
char *cs = LOCAL_COPY(parv[i]);
for (nick = rb_strtok_r(cs, " ", &p); nick; nick = rb_strtok_r(NULL, " ", &p))
{
target_p = find_named_client(nick);
if(target_p != NULL)
{
len = strlen(target_p->name);
if((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
{
memcpy((void *) current_insert_point,
(void *) 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';
*current_insert_point2 = '\0';
sendto_one(source_p, "%s", buf);
return 0;
}