Logo Search packages:      
Sourcecode: wireshark version File versions

packet-aim-ssi.c

/* packet-aim-ssi.c
 * Routines for AIM Instant Messenger (OSCAR) dissection, SNAC SSI
 * Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
 * Copyright 2000, Ralf Hoelzer <ralf@well.com>
 *
 * $Id: packet-aim-ssi.c 18196 2006-05-21 04:49:01Z sahlberg $
 *
 * 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"

#define FAMILY_SSI        0x0013


#define FAMILY_SSI_TYPE_BUDDY         0x0000
#define FAMILY_SSI_TYPE_GROUP         0x0001
#define FAMILY_SSI_TYPE_PERMIT        0x0002
#define FAMILY_SSI_TYPE_DENY          0x0003
#define FAMILY_SSI_TYPE_PDINFO        0x0004
#define FAMILY_SSI_TYPE_PRESENCEPREFS 0x0005
#define FAMILY_SSI_TYPE_ICONINFO      0x0014

static const value_string aim_fnac_family_ssi_types[] = {
  { FAMILY_SSI_TYPE_BUDDY, "Buddy" },
  { FAMILY_SSI_TYPE_GROUP, "Group" },
  { FAMILY_SSI_TYPE_PERMIT, "Permit" },
  { FAMILY_SSI_TYPE_DENY, "Deny" },
  { FAMILY_SSI_TYPE_PDINFO, "PDINFO" },
  { FAMILY_SSI_TYPE_PRESENCEPREFS, "Presence Preferences" },
  { FAMILY_SSI_TYPE_ICONINFO, "Icon Info" },
  { 0, NULL }
};

#define SSI_RIGHTSINFO_TLV_MAX_ITEMS      0x0004

static const aim_tlv ssi_rightsinfo_tlvs[] = {
      { SSI_RIGHTSINFO_TLV_MAX_ITEMS, "Maximums For Items", dissect_aim_tlv_value_bytes }, 
      { 0, NULL, NULL },
};

/* Initialize the protocol and registered fields */
static int proto_aim_ssi = -1;
static int hf_aim_fnac_subtype_ssi_version = -1;
static int hf_aim_fnac_subtype_ssi_numitems = -1;
static int hf_aim_fnac_subtype_ssi_last_change_time = -1;
static int hf_aim_fnac_subtype_ssi_buddyname_len = -1;
static int hf_aim_fnac_subtype_ssi_buddyname = -1;
static int hf_aim_fnac_subtype_ssi_gid = -1;
static int hf_aim_fnac_subtype_ssi_bid = -1;
static int hf_aim_fnac_subtype_ssi_type = -1;
static int hf_aim_fnac_subtype_ssi_tlvlen = -1;
static int hf_aim_fnac_subtype_ssi_data = -1;

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

static int dissect_ssi_item(tvbuff_t *tvb, packet_info *pinfo _U_, 
                              int offset, proto_tree *ssi_entry)
{
      guint16 buddyname_length = 0;
      int endoffset;
      guint16 tlv_len = 0;

      /* Buddy Name Length */
      buddyname_length = tvb_get_ntohs(tvb, offset);
      proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname_len, 
                                    tvb, offset, 2, FALSE);
      offset += 2;

      /* Buddy Name */
      if (buddyname_length > 0) {
            proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname, tvb, 
                                          offset, buddyname_length, FALSE);
            offset += buddyname_length;
      }

      /* Buddy group ID */
      proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_gid, tvb, offset, 
                                    2, FALSE);
      offset += 2;

      /* Buddy ID */
      proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_bid, tvb, offset, 
                                    2, FALSE);
      offset += 2;

      /* Buddy Type */
      proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_type, tvb, offset,
                                    2, FALSE);
      offset += 2;

      /* Size of the following TLV in bytes (as opposed to the number of 
         TLV objects in the chain) */
      tlv_len = tvb_get_ntohs(tvb, offset);
      proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_tlvlen, tvb, 
                                    offset, 2, FALSE);
      offset += 2;

      endoffset = offset;
      /* For now, we just dump the TLV contents as-is, since there is not a
         TLV dissection utility that works based on total chain length */
      while(endoffset < offset+tlv_len) {
            endoffset = dissect_aim_tlv(tvb, pinfo, endoffset, ssi_entry, client_tlvs);
      }
      return endoffset;
}

static int dissect_ssi_ssi_item(tvbuff_t *tvb, packet_info *pinfo, 
                              proto_tree *ssi_entry)
{
      return dissect_ssi_item(tvb, pinfo, 0, ssi_entry);
}


static int dissect_aim_ssi_rightsinfo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ssi_tree)
{
      return dissect_aim_tlv_sequence(tvb, pinfo, 0, ssi_tree, ssi_rightsinfo_tlvs);
}

static int dissect_aim_ssi_was_added(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ssi_tree)
{
      return dissect_aim_buddyname(tvb, pinfo, 0, ssi_tree);
}

static int dissect_aim_snac_ssi_list(tvbuff_t *tvb, packet_info *pinfo _U_, 
                                                       proto_tree *tree)

{
      int offset = 0;
      proto_item *ti;
      proto_tree *ssi_entry = NULL;
      guint16 num_items, i;

      /* SSI Version */
      proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_version, tvb, offset, 1,
                                    FALSE);
      offset += 1;

      /* Number of items */
      proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_numitems, tvb, offset, 2,
                                    FALSE);
      num_items = tvb_get_ntohs(tvb, offset);
      offset += 2;

      for(i = 0; i < num_items; i++) {
            ti = proto_tree_add_text(tree, tvb, offset, tvb_get_ntohs(tvb, offset+10)+10, "SSI Entry");
            ssi_entry = proto_item_add_subtree(ti, ett_aim_ssi);
            offset = dissect_ssi_item(tvb, pinfo, offset, ssi_entry);
      }
      proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_last_change_time, tvb, offset, 4, FALSE);
      return offset;
}

static const aim_subtype aim_fnac_family_ssi[] = {
      { 0x0001, "Error", dissect_aim_snac_error },
      { 0x0002, "Request Rights", NULL },
      { 0x0003, "Rights Info", dissect_aim_ssi_rightsinfo },
      { 0x0004, "Request List (first time)", NULL },
      { 0x0005, "Request List", NULL },
      { 0x0006, "List", dissect_aim_snac_ssi_list },
      { 0x0007, "Activate", NULL },
      { 0x0008, "Add Buddy", dissect_ssi_ssi_item },
      { 0x0009, "Modify Buddy", dissect_ssi_ssi_item },
      { 0x000a, "Delete Buddy", dissect_ssi_ssi_item },
      { 0x000e, "Server Ack", NULL },
      { 0x000f, "No List", NULL },
      { 0x0011, "Edit Start", NULL },
      { 0x0012, "Edit Stop", NULL },
      { 0x0014, "Grant Future Authorization to Buddy", NULL },
      { 0x0015, "Future Authorization Granted", NULL },
      { 0x0018, "Send Authentication Request", NULL },
      { 0x0019, "Authentication Request", NULL },
      { 0x001a, "Send Authentication Reply", NULL },
      { 0x001b, "Authentication Reply", NULL },
      { 0x001c, "Remote User Added Client To List", dissect_aim_ssi_was_added },
      { 0, NULL, NULL }
};


/* Register the protocol with Wireshark */
void
proto_register_aim_ssi(void)
{

      /* Setup list of header fields */
      static hf_register_info hf[] = {
            { &hf_aim_fnac_subtype_ssi_version,
                  { "SSI Version", "aim.fnac.ssi.version", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_numitems,
                  { "SSI Object count", "aim.fnac.ssi.numitems", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_last_change_time,
                  { "SSI Last Change Time", "aim.fnac.ssi.last_change_time", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_buddyname_len,
                  { "SSI Buddy Name length", "aim.fnac.ssi.buddyname_len", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_buddyname,
                  { "Buddy Name", "aim.fnac.ssi.buddyname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_gid,
                  { "SSI Buddy Group ID", "aim.fnac.ssi.gid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_bid,
                  { "SSI Buddy ID", "aim.fnac.ssi.bid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_type,
                  { "SSI Buddy type", "aim.fnac.ssi.type", FT_UINT16, BASE_HEX, VALS(aim_fnac_family_ssi_types), 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_tlvlen,
                  { "SSI TLV Len", "aim.fnac.ssi.tlvlen", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
            { &hf_aim_fnac_subtype_ssi_data,
                  { "SSI Buddy Data", "aim.fnac.ssi.data", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
            },
      };

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

      /* Register the protocol name and description */
      proto_aim_ssi = proto_register_protocol("AIM Server Side Info", "AIM SSI", "aim_ssi");

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

void
proto_reg_handoff_aim_ssi(void)
{
      aim_init_family(proto_aim_ssi, ett_aim_ssi, FAMILY_SSI, aim_fnac_family_ssi);
}

Generated by  Doxygen 1.6.0   Back to index