modules/m_presence.c

   1 /*
   2  *  charybdis: an advanced ircd.
   3  *  m_presence.c: IRC presence protocol implementation
   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  *  Copyright (c) 2009 William Pitcock <nenolod@dereferenced.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  23  *  USA
  24  *
  25  *  $Id: m_away.c 3370 2007-04-03 10:15:39Z nenolod $
  26  */
  27
  28 #include "stdinc.h"
  29 #include "client.h"
  30 #include "match.h"
  31 #include "ircd.h"
  32 #include "numeric.h"
  33 #include "send.h"
  34 #include "msg.h"
  35 #include "parse.h"
  36 #include "modules.h"
  37 #include "s_conf.h"
  38 #include "s_serv.h"
  39 #include "packet.h"
  40
  41 static int m_presence(struct Client *, struct Client *, int, const char **);
  42 static int me_presence(struct Client *, struct Client *, int, const char **);
  43
  44 struct Message presence_msgtab = {
  45         "PRESENCE", 0, 0, 0, MFLG_SLOW,
  46         {mg_unreg, {m_presence, 2}, {m_presence, 2}, mg_ignore, {me_presence, 2}, {m_presence, 2}}
  47 };
  48
  49 mapi_clist_av1 presence_clist[] = { &presence_msgtab, NULL };
  50 DECLARE_MODULE_AV1(presence, NULL, NULL, presence_clist, NULL, NULL, "$Revision$");
  51
  52 /*
  53 ** m_presence
  54 **      parv[1] = key
  55 **      parv[2] = setting
  56 */
  57 static int
  58 m_presence(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  59 {
  60         const char *val;
  61
  62         if(MyClient(source_p) && !IsFloodDone(source_p))
  63                 flood_endgrace(source_p);
  64
  65         if(!IsClient(source_p))
  66                 return 0;
  67
  68         if (!irccmp(parv[1], "away"))
  69         {
  70                 sendto_one_notice(source_p, ":Please use /AWAY to change your away status");
  71                 return 0;
  72         }
  73
  74         if((parc < 3 || EmptyString(parv[2])) && !EmptyString(parv[1]))
  75         {
  76                 if ((val = get_metadata(source_p, parv[1])) != NULL)
  77                 {
  78                         delete_metadata(source_p, parv[1]);
  79
  80                         sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
  81                                         ":%s ENCAP * PRESENCE %s", use_id(source_p), parv[1]);
  82                 }
  83                 if (MyConnect(source_p))
  84                         sendto_one_numeric(source_p, RPL_METADATAREM, form_str(RPL_METADATAREM), parv[1]);
  85                 return 0;
  86         }
  87
  88         if (strlen(parv[1]) >= METADATAKEYLEN)
  89         {
  90                 sendto_one_notice(source_p, ":Metadata key too long");
  91                 return 0;
  92         }
  93
  94         if ((val = get_metadata(source_p, parv[1])) != NULL)
  95         {
  96                 if (!strcmp(parv[2], val))
  97                         return 0;
  98         }
  99
 100         set_metadata(source_p, parv[1], parv[2]);
 101         sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
 102                       ":%s ENCAP * PRESENCE %s :%s", use_id(source_p), parv[1], parv[2]);
 103
 104         if(MyConnect(source_p))
 105                 sendto_one_numeric(source_p, RPL_METADATASET, form_str(RPL_METADATASET), parv[1]);
 106
 107         return 0;
 108 }
 109
 110 /*
 111 ** me_presence
 112 **      parv[1] = key
 113 **      parv[2] = setting
 114 */
 115 static int
 116 me_presence(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 117 {
 118         const char *val;
 119
 120         if(!IsClient(source_p))
 121                 return 0;
 122
 123         if((parc < 3 || EmptyString(parv[2])) && !EmptyString(parv[1]))
 124         {
 125                 delete_metadata(source_p, parv[1]);
 126                 return 0;
 127         }
 128
 129         if (strlen(parv[1]) >= METADATAKEYLEN)
 130                 return 0;
 131
 132         if ((val = get_metadata(source_p, parv[1])) != NULL)
 133         {
 134                 if (!strcmp(parv[2], val))
 135                         return 0;
 136         }
 137
 138         set_metadata(source_p, parv[1], parv[2]);
 139
 140         return 0;
 141 }