270 lines
8.6 KiB
C
270 lines
8.6 KiB
C
/* packet-aim-ssi.c
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* Routines for AIM Instant Messenger (OSCAR) dissection, SNAC SSI
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* Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
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* Copyright 2000, Ralf Hoelzer <ralf@well.com>
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/strutil.h>
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#include "packet-aim.h"
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#define FAMILY_SSI 0x0013
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#define FAMILY_SSI_TYPE_BUDDY 0x0000
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#define FAMILY_SSI_TYPE_GROUP 0x0001
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#define FAMILY_SSI_TYPE_PERMIT 0x0002
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#define FAMILY_SSI_TYPE_DENY 0x0003
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#define FAMILY_SSI_TYPE_PDINFO 0x0004
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#define FAMILY_SSI_TYPE_PRESENCEPREFS 0x0005
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#define FAMILY_SSI_TYPE_ICONINFO 0x0014
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static const value_string aim_fnac_family_ssi_types[] = {
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{ FAMILY_SSI_TYPE_BUDDY, "Buddy" },
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{ FAMILY_SSI_TYPE_GROUP, "Group" },
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{ FAMILY_SSI_TYPE_PERMIT, "Permit" },
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{ FAMILY_SSI_TYPE_DENY, "Deny" },
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{ FAMILY_SSI_TYPE_PDINFO, "PDINFO" },
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{ FAMILY_SSI_TYPE_PRESENCEPREFS, "Presence Preferences" },
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{ FAMILY_SSI_TYPE_ICONINFO, "Icon Info" },
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{ 0, NULL }
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};
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#define SSI_RIGHTSINFO_TLV_MAX_ITEMS 0x0004
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static const aim_tlv ssi_rightsinfo_tlvs[] = {
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{ SSI_RIGHTSINFO_TLV_MAX_ITEMS, "Maximums For Items", dissect_aim_tlv_value_bytes },
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{ 0, NULL, NULL },
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};
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/* Initialize the protocol and registered fields */
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static int proto_aim_ssi = -1;
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static int hf_aim_fnac_subtype_ssi_version = -1;
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static int hf_aim_fnac_subtype_ssi_numitems = -1;
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static int hf_aim_fnac_subtype_ssi_last_change_time = -1;
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static int hf_aim_fnac_subtype_ssi_buddyname_len = -1;
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static int hf_aim_fnac_subtype_ssi_buddyname = -1;
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static int hf_aim_fnac_subtype_ssi_gid = -1;
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static int hf_aim_fnac_subtype_ssi_bid = -1;
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static int hf_aim_fnac_subtype_ssi_type = -1;
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static int hf_aim_fnac_subtype_ssi_tlvlen = -1;
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static int hf_aim_fnac_subtype_ssi_data = -1;
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/* Initialize the subtree pointers */
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static gint ett_aim_ssi = -1;
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static gint ett_ssi = -1;
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static int dissect_ssi_item(tvbuff_t *tvb, packet_info *pinfo _U_,
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int offset, proto_tree *ssi_entry)
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{
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guint16 buddyname_length = 0;
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int endoffset;
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guint16 tlv_len = 0;
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/* Buddy Name Length */
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buddyname_length = tvb_get_ntohs(tvb, offset);
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname_len,
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tvb, offset, 2, FALSE);
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offset += 2;
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/* Buddy Name */
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if (buddyname_length > 0) {
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname, tvb,
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offset, buddyname_length, FALSE);
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offset += buddyname_length;
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}
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/* Buddy group ID */
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_gid, tvb, offset,
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2, FALSE);
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offset += 2;
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/* Buddy ID */
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_bid, tvb, offset,
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2, FALSE);
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offset += 2;
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/* Buddy Type */
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_type, tvb, offset,
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2, FALSE);
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offset += 2;
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/* Size of the following TLV in bytes (as opposed to the number of
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TLV objects in the chain) */
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tlv_len = tvb_get_ntohs(tvb, offset);
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proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_tlvlen, tvb,
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offset, 2, FALSE);
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offset += 2;
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endoffset = offset;
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/* For now, we just dump the TLV contents as-is, since there is not a
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TLV dissection utility that works based on total chain length */
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while(endoffset < offset+tlv_len) {
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endoffset = dissect_aim_tlv(tvb, pinfo, endoffset, ssi_entry, client_tlvs);
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}
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return endoffset;
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}
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static int dissect_ssi_ssi_item(tvbuff_t *tvb, packet_info *pinfo,
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proto_tree *ssi_entry)
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{
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return dissect_ssi_item(tvb, pinfo, 0, ssi_entry);
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}
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static int dissect_aim_ssi_rightsinfo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ssi_tree)
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{
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return dissect_aim_tlv_sequence(tvb, pinfo, 0, ssi_tree, ssi_rightsinfo_tlvs);
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}
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static int dissect_aim_ssi_was_added(tvbuff_t *tvb, packet_info *pinfo, proto_tree *ssi_tree)
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{
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return dissect_aim_buddyname(tvb, pinfo, 0, ssi_tree);
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}
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static int dissect_aim_snac_ssi_list(tvbuff_t *tvb, packet_info *pinfo _U_,
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proto_tree *tree)
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{
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int offset = 0;
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proto_item *ti;
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proto_tree *ssi_entry = NULL;
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guint16 num_items, i;
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/* SSI Version */
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proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_version, tvb, offset, 1,
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FALSE);
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offset += 1;
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/* Number of items */
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proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_numitems, tvb, offset, 2,
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FALSE);
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num_items = tvb_get_ntohs(tvb, offset);
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offset += 2;
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for(i = 0; i < num_items; i++) {
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ti = proto_tree_add_text(tree, tvb, offset, tvb_get_ntohs(tvb, offset+10)+10, "SSI Entry");
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ssi_entry = proto_item_add_subtree(ti, ett_aim_ssi);
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offset = dissect_ssi_item(tvb, pinfo, offset, ssi_entry);
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}
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proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_last_change_time, tvb, offset, 4, FALSE);
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return offset;
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}
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static const aim_subtype aim_fnac_family_ssi[] = {
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{ 0x0001, "Error", dissect_aim_snac_error },
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{ 0x0002, "Request Rights", NULL },
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{ 0x0003, "Rights Info", dissect_aim_ssi_rightsinfo },
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{ 0x0004, "Request List (first time)", NULL },
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{ 0x0005, "Request List", NULL },
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{ 0x0006, "List", dissect_aim_snac_ssi_list },
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{ 0x0007, "Activate", NULL },
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{ 0x0008, "Add Buddy", dissect_ssi_ssi_item },
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{ 0x0009, "Modify Buddy", dissect_ssi_ssi_item },
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{ 0x000a, "Delete Buddy", dissect_ssi_ssi_item },
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{ 0x000e, "Server Ack", NULL },
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{ 0x000f, "No List", NULL },
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{ 0x0011, "Edit Start", NULL },
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{ 0x0012, "Edit Stop", NULL },
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{ 0x0014, "Grant Future Authorization to Buddy", NULL },
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{ 0x0015, "Future Authorization Granted", NULL },
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{ 0x0018, "Send Authentication Request", NULL },
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{ 0x0019, "Authentication Request", NULL },
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{ 0x001a, "Send Authentication Reply", NULL },
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{ 0x001b, "Authentication Reply", NULL },
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{ 0x001c, "Remote User Added Client To List", dissect_aim_ssi_was_added },
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{ 0, NULL, NULL }
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};
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/* Register the protocol with Ethereal */
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void
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proto_register_aim_ssi(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_aim_fnac_subtype_ssi_version,
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{ "SSI Version", "aim.fnac.ssi.version", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_numitems,
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{ "SSI Object count", "aim.fnac.ssi.numitems", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_last_change_time,
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{ "SSI Last Change Time", "aim.fnac.ssi.last_change_time", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_buddyname_len,
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{ "SSI Buddy Name length", "aim.fnac.ssi.buddyname_len", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_buddyname,
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{ "Buddy Name", "aim.fnac.ssi.buddyname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_gid,
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{ "SSI Buddy Group ID", "aim.fnac.ssi.gid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_bid,
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{ "SSI Buddy ID", "aim.fnac.ssi.bid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_type,
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{ "SSI Buddy type", "aim.fnac.ssi.type", FT_UINT16, BASE_HEX, VALS(aim_fnac_family_ssi_types), 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_tlvlen,
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{ "SSI TLV Len", "aim.fnac.ssi.tlvlen", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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{ &hf_aim_fnac_subtype_ssi_data,
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{ "SSI Buddy Data", "aim.fnac.ssi.data", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
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},
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_aim_ssi,
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&ett_ssi,
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};
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/* Register the protocol name and description */
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proto_aim_ssi = proto_register_protocol("AIM Server Side Info", "AIM SSI", "aim_ssi");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_aim_ssi, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_aim_ssi(void)
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{
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aim_init_family(proto_aim_ssi, ett_aim_ssi, FAMILY_SSI, aim_fnac_family_ssi);
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}
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