modules/m_ping.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_ping.c: Requests that a PONG message be sent back.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  */
  24
  25 #include "stdinc.h"
  26 #include "client.h"
  27 #include "ircd.h"
  28 #include "numeric.h"
  29 #include "send.h"
  30 #include "irc_string.h"
  31 #include "msg.h"
  32 #include "parse.h"
  33 #include "modules.h"
  34 #include "hash.h"
  35 #include "s_conf.h"
  36 #include "s_serv.h"
  37
  38 static int m_ping(struct Client *, struct Client *, int, const char **);
  39 static int ms_ping(struct Client *, struct Client *, int, const char **);
  40
  41 struct Message ping_msgtab = {
  42         "PING", 0, 0, 0, MFLG_SLOW,
  43         {mg_unreg, {m_ping, 2}, {ms_ping, 2}, {ms_ping, 2}, mg_ignore, {m_ping, 2}}
  44 };
  45
  46 mapi_clist_av1 ping_clist[] = { &ping_msgtab, NULL };
  47 DECLARE_MODULE_AV1(ping, NULL, NULL, ping_clist, NULL, NULL, "$Revision: 26 $");
  48
  49 /*
  50 ** m_ping
  51 **      parv[0] = sender prefix
  52 **      parv[1] = origin
  53 **      parv[2] = destination
  54 */
  55 static int
  56 m_ping(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  57 {
  58         struct Client *target_p;
  59         const char *destination;
  60
  61         destination = parv[2];  /* Will get NULL or pointer (parc >= 2!!) */
  62
  63         if(!EmptyString(destination) && !match(destination, me.name))
  64         {
  65                 if((target_p = find_server(source_p, destination)))
  66                 {
  67                         sendto_one(target_p, ":%s PING %s :%s",
  68                                    get_id(source_p, target_p),
  69                                    source_p->name, get_id(target_p, target_p));
  70                 }
  71                 else
  72                 {
  73                         sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
  74                                            form_str(ERR_NOSUCHSERVER),
  75                                            destination);
  76                         return 0;
  77                 }
  78         }
  79         else
  80                 sendto_one(source_p, ":%s PONG %s :%s", me.name,
  81                            (destination) ? destination : me.name, parv[1]);
  82
  83         return 0;
  84 }
  85
  86 static int
  87 ms_ping(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  88 {
  89         struct Client *target_p;
  90         const char *destination;
  91
  92         destination = parv[2];  /* Will get NULL or pointer (parc >= 2!!) */
  93
  94         if(!EmptyString(destination) && irccmp(destination, me.name) &&
  95            irccmp(destination, me.id))
  96         {
  97                 if((target_p = find_client(destination)) && IsServer(target_p))
  98                         sendto_one(target_p, ":%s PING %s :%s",
  99                                    get_id(source_p, target_p), source_p->name,
 100                                    get_id(target_p, target_p));
 101                 /* not directed at an id.. */
 102                 else if(!IsDigit(*destination))
 103                         sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
 104                                            form_str(ERR_NOSUCHSERVER),
 105                                            destination);
 106         }
 107         else
 108                 sendto_one(source_p, ":%s PONG %s :%s",
 109                            get_id(&me, source_p), me.name,
 110                            get_id(source_p, source_p));
 111
 112         return 0;
 113 }