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packet-aim-location.c

/* packet-aim-location.c
 * Routines for AIM Instant Messenger (OSCAR) dissection, SNAC Location
 * Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
 * Copyright 2000, Ralf Hoelzer <ralf@well.com>
 *
 * $Id: packet-aim-location.c 22742 2007-08-30 05:22:25Z etxrab $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#include <glib.h>

#include <epan/packet.h>
#include <epan/strutil.h>

#include "packet-aim.h"

/* SNAC families */
#define FAMILY_LOCATION   0x0002

#define FAMILY_LOCATION_USERINFO_INFOENCODING  0x0001
#define FAMILY_LOCATION_USERINFO_INFOMSG       0x0002
#define FAMILY_LOCATION_USERINFO_AWAYENCODING  0x0003
#define FAMILY_LOCATION_USERINFO_AWAYMSG       0x0004
#define FAMILY_LOCATION_USERINFO_CAPS          0x0005

static const aim_tlv msg_tlv[] = {
  { FAMILY_LOCATION_USERINFO_INFOENCODING, "Info Msg Encoding", dissect_aim_tlv_value_string},
  { FAMILY_LOCATION_USERINFO_INFOMSG, "Info Message", dissect_aim_tlv_value_string },
  { FAMILY_LOCATION_USERINFO_AWAYENCODING, "Away Msg Encoding", dissect_aim_tlv_value_string },
  { FAMILY_LOCATION_USERINFO_AWAYMSG, "Away Message", dissect_aim_tlv_value_string },
  { FAMILY_LOCATION_USERINFO_CAPS, "Capabilities", dissect_aim_tlv_value_bytes },
  { 0, NULL, 0 }
};

#define AIM_LOCATION_RIGHTS_TLV_MAX_PROFILE_LENGTH    0x0001
#define AIM_LOCATION_RIGHTS_TLV_MAX_CAPABILITIES      0x0002

static const aim_tlv location_rights_tlvs[] = {
  { AIM_LOCATION_RIGHTS_TLV_MAX_PROFILE_LENGTH, "Max Profile Length", dissect_aim_tlv_value_uint16 },
  { AIM_LOCATION_RIGHTS_TLV_MAX_CAPABILITIES, "Max capabilities", dissect_aim_tlv_value_uint16 },
  { 0, NULL, NULL }
};


#define AIM_LOCATION_USERINFO_TLV_MIME_TYPE                   0x0001
#define AIM_LOCATION_USERINFO_TLV_CLIENT_CAPABILITIES 0x0005

static const aim_tlv location_userinfo_tlvs[] = {
      { AIM_LOCATION_USERINFO_TLV_MIME_TYPE, "Mime Type", dissect_aim_tlv_value_string },
      { AIM_LOCATION_USERINFO_TLV_CLIENT_CAPABILITIES, "Client capabilities", dissect_aim_tlv_value_client_capabilities },
      { 0, NULL, NULL }
};

#define FAMILY_LOCATION_USERINFO_INFOTYPE_GENERALINFO  0x0001
#define FAMILY_LOCATION_USERINFO_INFOTYPE_AWAYMSG      0x0003
#define FAMILY_LOCATION_USERINFO_INFOTYPE_CAPS         0x0005

static const value_string aim_snac_location_request_user_info_infotypes[] = {
  { FAMILY_LOCATION_USERINFO_INFOTYPE_GENERALINFO, "Request General Info" },
  { FAMILY_LOCATION_USERINFO_INFOTYPE_AWAYMSG, "Request Away Message" },
  { FAMILY_LOCATION_USERINFO_INFOTYPE_CAPS, "Request Capabilities" },
  { 0, NULL }
};

/* Initialize the protocol and registered fields */
static int proto_aim_location = -1;
static int hf_aim_snac_location_request_user_info_infotype = -1;
static int hf_aim_userinfo_warninglevel = -1;
static int hf_aim_buddyname_len = -1;
static int hf_aim_buddyname = -1;

/* Initialize the subtree pointers */
static gint ett_aim_location    = -1;

static int dissect_aim_location_rightsinfo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *loc_tree)
{
      return dissect_aim_tlv_sequence(tvb, pinfo, 0, loc_tree, location_rights_tlvs);
}

static int dissect_aim_location_setuserinfo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *loc_tree)
{
      return dissect_aim_tlv_sequence(tvb, pinfo, 0, loc_tree, location_userinfo_tlvs);
}

static int dissect_aim_location_watcher_notification(tvbuff_t *tvb, packet_info *pinfo, proto_tree *loc_tree)
{
      int offset = 0;
      while(tvb_length_remaining(tvb, offset) > 0) {
            offset = dissect_aim_buddyname(tvb, pinfo, offset, loc_tree);
      }
      return offset;
}

static int dissect_aim_location_user_info_query(tvbuff_t *tvb, packet_info *pinfo, proto_tree *loc_tree)
{
      return dissect_aim_buddyname(tvb, pinfo, 4, loc_tree);
}

static int dissect_aim_snac_location_request_user_information(tvbuff_t *tvb, 
                                                                                            packet_info *pinfo _U_,
                                                                                            proto_tree *tree)
{
      int offset = 0;
      guint8 buddyname_length = 0;

      /* Info Type */
      proto_tree_add_item(tree, hf_aim_snac_location_request_user_info_infotype, 
                                    tvb, offset, 2, FALSE);
      offset += 2;

      /* Buddy Name length */
      buddyname_length = tvb_get_guint8(tvb, offset);
      proto_tree_add_item(tree, hf_aim_buddyname_len, tvb, offset, 1, FALSE);
      offset += 1;

      /* Buddy name */
      proto_tree_add_item(tree, hf_aim_buddyname, tvb, offset, buddyname_length, FALSE);
      offset += buddyname_length;

      return offset;
}

static int dissect_aim_snac_location_user_information(tvbuff_t *tvb, 
                                                                                packet_info *pinfo _U_, 
                                                                                proto_tree *tree)
{
      int offset = 0;
      guint8 buddyname_length = 0;

      /* Buddy Name length */
      buddyname_length = tvb_get_guint8(tvb, offset);
      proto_tree_add_item(tree, hf_aim_buddyname_len, tvb, offset, 1, FALSE);
      offset += 1;

      /* Buddy name */
      proto_tree_add_item(tree, hf_aim_buddyname, tvb, offset, buddyname_length, FALSE);
      offset += buddyname_length;

      /* Warning level */
      proto_tree_add_item(tree, hf_aim_userinfo_warninglevel, tvb, offset, 2, FALSE);
      offset += 2;

      offset = dissect_aim_tlv_list(tvb, pinfo, offset, tree, onlinebuddy_tlvs);

      return dissect_aim_tlv_sequence(tvb, pinfo, offset, tree, msg_tlv);
}

static const aim_subtype aim_fnac_family_location[] = {
      { 0x0001, "Error", dissect_aim_snac_error },
      { 0x0002, "Request Rights", NULL },
      { 0x0003, "Rights Info", dissect_aim_location_rightsinfo },
      { 0x0004, "Set User Info", dissect_aim_location_setuserinfo },
      { 0x0005, "Request User Info", dissect_aim_snac_location_request_user_information },
      { 0x0006, "User Info", dissect_aim_snac_location_user_information },
      { 0x0007, "Watcher Subrequest", NULL },
      { 0x0008, "Watcher Notification", dissect_aim_location_watcher_notification },
      { 0x0015, "User Info Query", dissect_aim_location_user_info_query },
      { 0, NULL, NULL }
};



void
proto_register_aim_location(void)
{

      /* Setup list of header fields */
      static hf_register_info hf[] = {
            { &hf_aim_buddyname_len,
                  { "Buddyname len", "aim_location.buddynamelen", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_buddyname,
                  { "Buddy Name", "aim_location.buddyname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_userinfo_warninglevel,
                  { "Warning Level", "aim_location.userinfo.warninglevel", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
            },
            { &hf_aim_snac_location_request_user_info_infotype,
                  { "Infotype", "aim_location.snac.request_user_info.infotype", FT_UINT16, BASE_HEX, VALS(aim_snac_location_request_user_info_infotypes), 0x0,
                        "", HFILL }
            },
      };

      /* Setup protocol subtree array */
      static gint *ett[] = {
            &ett_aim_location,
      };

      /* Register the protocol name and description */
      proto_aim_location = proto_register_protocol("AIM Location", "AIM Location", "aim_location");

      /* Required function calls to register the header fields and subtrees used */
      proto_register_field_array(proto_aim_location, hf, array_length(hf));
      proto_register_subtree_array(ett, array_length(ett));
}

void
proto_reg_handoff_aim_location(void)
{
      aim_init_family(proto_aim_location, ett_aim_location, FAMILY_LOCATION, aim_fnac_family_location);
}

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