![Gerald Combs](/assets/img/avatar_default.png)
Fix a bug introduced recently in packet-rpc.c. Replace DISSECTOR_ASSERT() with THROW(ReportedBoundsError) in my recent checkins, since fuzz-test.sh sets WIRESHARK_ABORT_ON_DISSECTOR_BUG. svn path=/trunk/; revision=18693
795 lines
28 KiB
C
795 lines
28 KiB
C
/* packet-pktc.c
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* Routines for PacketCable (PKTC) Kerberized Key Management and
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* PacketCable (PKTC) MTA FQDN packet disassembly
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*
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* References:
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* [1] PacketCable 1.0 Security Specification, PKT-SP-SEC-I11-040730, July 30,
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* 2004, Cable Television Laboratories, Inc., http://www.PacketCable.com/
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*
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* Ronnie Sahlberg 2004
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* Thomas Anders 2004
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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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 <epan/packet.h>
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#include "packet-pktc.h"
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#include "packet-kerberos.h"
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#include "packet-snmp.h"
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#define PKTC_PORT 1293
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#define PKTC_MTAFQDN_PORT 2246
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static int proto_pktc = -1;
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static gint hf_pktc_app_spec_data = -1;
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static gint hf_pktc_list_of_ciphersuites = -1;
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static gint hf_pktc_list_of_ciphersuites_len = -1;
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static gint hf_pktc_kmmid = -1;
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static gint hf_pktc_doi = -1;
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static gint hf_pktc_version_major = -1;
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static gint hf_pktc_version_minor = -1;
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static gint hf_pktc_server_nonce = -1;
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static gint hf_pktc_server_principal = -1;
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static gint hf_pktc_timestamp = -1;
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static gint hf_pktc_snmpEngineID_len = -1;
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static gint hf_pktc_snmpEngineID = -1;
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static gint hf_pktc_snmpEngineBoots = -1;
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static gint hf_pktc_snmpEngineTime = -1;
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static gint hf_pktc_usmUserName_len = -1;
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static gint hf_pktc_usmUserName = -1;
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static gint hf_pktc_ipsec_spi = -1;
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static gint hf_pktc_snmpAuthenticationAlgorithm = -1;
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static gint hf_pktc_snmpEncryptionTransformID = -1;
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static gint hf_pktc_ipsecAuthenticationAlgorithm = -1;
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static gint hf_pktc_ipsecEncryptionTransformID = -1;
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static gint hf_pktc_reestablish_flag = -1;
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static gint hf_pktc_ack_required_flag = -1;
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static gint hf_pktc_sha1_hmac = -1;
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static gint hf_pktc_sec_param_lifetime = -1;
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static gint hf_pktc_grace_period = -1;
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static gint hf_pktc_mtafqdn_msgtype = -1;
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static gint hf_pktc_mtafqdn_enterprise = -1;
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static gint hf_pktc_mtafqdn_version = -1;
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static gint hf_pktc_mtafqdn_mac = -1;
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static gint hf_pktc_mtafqdn_pub_key_hash = -1;
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static gint hf_pktc_mtafqdn_manu_cert_revoked = -1;
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static gint hf_pktc_mtafqdn_fqdn = -1;
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static gint hf_pktc_mtafqdn_ip = -1;
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static gint ett_pktc = -1;
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static gint ett_pktc_app_spec_data = -1;
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static gint ett_pktc_list_of_ciphersuites = -1;
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static gint ett_pktc_engineid = -1;
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static gint ett_pktc_mtafqdn = -1;
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#define KMMID_WAKEUP 0x01
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#define KMMID_AP_REQUEST 0x02
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#define KMMID_AP_REPLY 0x03
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#define KMMID_SEC_PARAM_REC 0x04
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#define KMMID_REKEY 0x05
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#define KMMID_ERROR_REPLY 0x06
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static const value_string kmmid_types[] = {
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{ KMMID_WAKEUP , "Wake Up" },
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{ KMMID_AP_REQUEST , "AP Request" },
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{ KMMID_AP_REPLY , "AP Reply" },
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{ KMMID_SEC_PARAM_REC , "Security Parameter Recovered" },
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{ KMMID_REKEY , "Rekey" },
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{ KMMID_ERROR_REPLY , "Error Reply" },
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{ 0, NULL }
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};
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#define DOI_IPSEC 1
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#define DOI_SNMPv3 2
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#define SNMPv3_NULL 0x20
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#define SNMPv3_DES 0x21
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#define SNMPv3_HMAC_MD5 0x21
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#define SNMPv3_HMAC_SHA1 0x22
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#define ESP_3DES 0x03
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#define ESP_RC5 0x04
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#define ESP_IDEA 0x05
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#define ESP_CAST 0x06
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#define ESP_BLOWFISH 0x07
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#define ESP_NULL 0x0b
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#define ESP_AES 0x0c
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#define HMAC_MD5_96 0x01
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#define HMAC_SHA1_96 0x02
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/* Domain of Interpretation */
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static const value_string doi_types[] = {
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{ DOI_IPSEC , "IPsec" },
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{ DOI_SNMPv3 , "SNMPv3" },
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{ 0, NULL }
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};
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/* SNMPv3 ciphersuites */
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static const value_string snmp_authentication_algorithm_vals[] = {
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{ SNMPv3_HMAC_MD5 , "HMAC-MD5" },
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{ SNMPv3_HMAC_SHA1 , "HMAC-SHA1" },
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{ 0 , NULL }
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};
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static const value_string snmp_transform_id_vals[] = {
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{ SNMPv3_NULL , "NULL" }, /* no encryption */
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{ SNMPv3_DES , "DES" },
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{ 0 , NULL }
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};
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/* IPsec ciphersuites */
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static const value_string ipsec_transform_id_vals[] = {
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{ ESP_3DES , "3DES" },
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{ ESP_RC5 , "RC5" },
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{ ESP_IDEA , "IDEA" },
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{ ESP_CAST , "CAST" },
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{ ESP_BLOWFISH , "BLOWFISH" },
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{ ESP_NULL , "NULL" }, /* no encryption, RFC 2410 */
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{ ESP_AES , "AES-128" },
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{ 0 , NULL }
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};
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static const value_string ipsec_authentication_algorithm_vals[] = {
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{ HMAC_MD5_96 , "HMAC-MD5-96" }, /* RFC 2403 */
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{ HMAC_SHA1_96 , "HMAC-SHA-1-96" }, /* RFC 2404 */
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{ 0 , NULL }
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};
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/* MTA FQDN Message Types */
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#define PKTC_MTAFQDN_REQ 0x01
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#define PKTC_MTAFQDN_REP 0x02
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#define PKTC_MTAFQDN_ERR 0x03
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static const value_string pktc_mtafqdn_msgtype_vals[] = {
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{ PKTC_MTAFQDN_REQ, "MTA FQDN Request" },
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{ PKTC_MTAFQDN_REP, "MTA FQDN Reply" },
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{ PKTC_MTAFQDN_ERR, "MTA FQDN Error Reply" },
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{ 0 , NULL }
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};
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static int
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dissect_pktc_app_specific_data(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 doi, guint8 kmmid)
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{
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int old_offset=offset;
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proto_tree *tree = NULL;
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proto_tree *engineid_tree = NULL;
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proto_item *item = NULL;
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proto_item *engineid_item = NULL;
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guint8 len;
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if (parent_tree) {
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item = proto_tree_add_item(parent_tree, hf_pktc_app_spec_data, tvb, offset, -1, FALSE);
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tree = proto_item_add_subtree(item, ett_pktc_app_spec_data);
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}
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switch(doi){
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case DOI_SNMPv3:
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switch(kmmid){
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/* we dont distinguish between manager and agent engineid.
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feel free to add separation for this if it is imporant enough
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for you. */
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case KMMID_AP_REQUEST:
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case KMMID_AP_REPLY:
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/* snmpEngineID Length */
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len=tvb_get_guint8(tvb, offset);
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proto_tree_add_uint(tree, hf_pktc_snmpEngineID_len, tvb, offset, 1, len);
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offset+=1;
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/* snmpEngineID */
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engineid_item = proto_tree_add_item(tree, hf_pktc_snmpEngineID, tvb, offset, len, FALSE);
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engineid_tree = proto_item_add_subtree(engineid_item, ett_pktc_engineid);
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dissect_snmp_engineid(engineid_tree, tvb, offset, len);
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offset+=len;
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/* boots */
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proto_tree_add_item(tree, hf_pktc_snmpEngineBoots, tvb, offset, 4, FALSE);
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offset+=4;
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/* time */
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proto_tree_add_item(tree, hf_pktc_snmpEngineTime, tvb, offset, 4, FALSE);
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offset+=4;
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/* usmUserName Length */
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len=tvb_get_guint8(tvb, offset);
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proto_tree_add_uint(tree, hf_pktc_usmUserName_len, tvb, offset, 1, len);
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offset+=1;
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/* usmUserName */
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proto_tree_add_item(tree, hf_pktc_usmUserName, tvb, offset, len, FALSE);
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offset+=len;
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, 1, "Unknown KMMID");
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tvb_get_guint8(tvb, 9999); /* bail out and inform user we cant dissect the packet */
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};
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break;
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case DOI_IPSEC:
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switch(kmmid){
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/* we dont distinguish between SPIs for inbound Security Associations
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of the client (AP-REQ) vs. server (AP-REP, REKEY). Feel free to add
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separation for this if it is imporant enough for you. */
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case KMMID_AP_REQUEST:
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case KMMID_AP_REPLY:
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case KMMID_REKEY:
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/* Security Parameter Index (SPI) */
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proto_tree_add_item(tree, hf_pktc_ipsec_spi, tvb, offset, 4, FALSE);
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offset+=4;
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, 1, "Unknown KMMID");
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tvb_get_guint8(tvb, 9999); /* bail out and inform user we cant dissect the packet */
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};
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, 1, "Unknown DOI");
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tvb_get_guint8(tvb, 9999); /* bail out and inform user we cant dissect the packet */
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}
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proto_item_set_len(item, offset-old_offset);
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return offset;
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}
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static int
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dissect_pktc_list_of_ciphersuites(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 doi)
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{
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int old_offset=offset;
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proto_tree *tree = NULL;
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proto_item *item = NULL;
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guint8 len, i;
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if (parent_tree) {
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item = proto_tree_add_item(parent_tree, hf_pktc_list_of_ciphersuites, tvb, offset, -1, FALSE);
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tree = proto_item_add_subtree(item, ett_pktc_list_of_ciphersuites);
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}
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/* number of ciphersuites */
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len=tvb_get_guint8(tvb, offset);
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if (len>0) {
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proto_item_append_text(tree, " (%d):", len);
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}
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proto_tree_add_uint_hidden(tree, hf_pktc_list_of_ciphersuites_len, tvb, offset, 1, len);
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offset+=1;
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switch(doi){
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case DOI_SNMPv3:
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for(i=0;i<len;i++){
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/* SNMPv3 authentication algorithm */
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proto_tree_add_item(tree, hf_pktc_snmpAuthenticationAlgorithm, tvb, offset, 1, FALSE);
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proto_item_append_text(tree, " %s", val_to_str(tvb_get_guint8(tvb, offset), snmp_authentication_algorithm_vals, "%0x"));
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offset+=1;
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/* SNMPv3 encryption transform id */
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proto_tree_add_item(tree, hf_pktc_snmpEncryptionTransformID, tvb, offset, 1, FALSE);
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proto_item_append_text(tree, "/%s", val_to_str(tvb_get_guint8(tvb, offset), snmp_transform_id_vals, "%0x"));
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offset+=1;
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}
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break;
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case DOI_IPSEC:
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for(i=0;i<len;i++){
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/* IPsec authentication algorithm */
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proto_tree_add_item(tree, hf_pktc_ipsecAuthenticationAlgorithm, tvb, offset, 1, FALSE);
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proto_item_append_text(tree, " %s", val_to_str(tvb_get_guint8(tvb, offset), ipsec_authentication_algorithm_vals, "%0x"));
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offset+=1;
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/* IPsec encryption transform id */
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proto_tree_add_item(tree, hf_pktc_ipsecEncryptionTransformID, tvb, offset, 1, FALSE);
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proto_item_append_text(tree, "/%s", val_to_str(tvb_get_guint8(tvb, offset), ipsec_transform_id_vals, "%0x"));
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offset+=1;
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}
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, 1, "Unknown DOI");
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tvb_get_guint8(tvb, 9999); /* bail out and inform user we cant dissect the packet */
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}
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proto_item_set_len(item, offset-old_offset);
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return offset;
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}
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static int
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dissect_pktc_wakeup(proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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guint32 snonce;
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guint string_len;
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/* Server Nonce */
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snonce=tvb_get_ntohl(tvb, offset);
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proto_tree_add_uint(tree, hf_pktc_server_nonce, tvb, offset, 4, snonce);
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offset+=4;
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/* Server Kerberos Principal Identifier */
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string_len=tvb_strsize(tvb, offset);
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proto_tree_add_item(tree, hf_pktc_server_principal, tvb, offset, string_len, FALSE);
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offset+=string_len;
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return offset;
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}
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static int
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dissect_pktc_ap_request(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint8 doi)
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{
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tvbuff_t *pktc_tvb;
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guint32 snonce;
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/* AP Request kerberos blob */
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pktc_tvb = tvb_new_subset(tvb, offset, -1, -1);
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offset += dissect_kerberos_main(pktc_tvb, pinfo, tree, FALSE, NULL);
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/* Server Nonce */
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snonce=tvb_get_ntohl(tvb, offset);
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proto_tree_add_uint(tree, hf_pktc_server_nonce, tvb, offset, 4, snonce);
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offset+=4;
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/* app specific data */
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offset=dissect_pktc_app_specific_data(pinfo, tree, tvb, offset, doi, KMMID_AP_REQUEST);
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/* list of ciphersuites */
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offset=dissect_pktc_list_of_ciphersuites(pinfo, tree, tvb, offset, doi);
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/* re-establish flag */
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proto_tree_add_item(tree, hf_pktc_reestablish_flag, tvb, offset, 1, FALSE);
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offset+=1;
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/* sha-1 hmac */
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proto_tree_add_item(tree, hf_pktc_sha1_hmac, tvb, offset, 20, FALSE);
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offset+=20;
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return offset;
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}
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static int
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dissect_pktc_ap_reply(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint8 doi)
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{
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tvbuff_t *pktc_tvb;
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/* AP Reply kerberos blob */
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pktc_tvb = tvb_new_subset(tvb, offset, -1, -1);
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offset += dissect_kerberos_main(pktc_tvb, pinfo, tree, FALSE, NULL);
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/* app specific data */
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offset=dissect_pktc_app_specific_data(pinfo, tree, tvb, offset, doi, KMMID_AP_REPLY);
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/* selected ciphersuite */
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offset=dissect_pktc_list_of_ciphersuites(pinfo, tree, tvb, offset, doi);
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/* sec param lifetime */
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proto_tree_add_uint_format(tree, hf_pktc_sec_param_lifetime, tvb, offset, 4,
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tvb_get_ntohl(tvb, offset), "%s: %s",
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proto_registrar_get_name(hf_pktc_sec_param_lifetime),
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time_secs_to_str(tvb_get_ntohl(tvb, offset)));
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offset+=4;
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/* grace period */
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proto_tree_add_item(tree, hf_pktc_grace_period, tvb, offset, 4, FALSE);
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offset+=4;
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/* re-establish flag */
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proto_tree_add_item(tree, hf_pktc_reestablish_flag, tvb, offset, 1, FALSE);
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offset+=1;
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/* ack required flag */
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proto_tree_add_item(tree, hf_pktc_ack_required_flag, tvb, offset, 1, FALSE);
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offset+=1;
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/* sha-1 hmac */
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proto_tree_add_item(tree, hf_pktc_sha1_hmac, tvb, offset, 20, FALSE);
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offset+=20;
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return offset;
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}
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static int
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dissect_pktc_sec_param_rec(proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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/* sha-1 hmac of the subkey of the preceding AP-REP */
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proto_tree_add_item(tree, hf_pktc_sha1_hmac, tvb, offset, 20, FALSE);
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offset+=20;
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return offset;
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}
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static int
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dissect_pktc_rekey(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint8 doi)
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{
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guint32 snonce;
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guint string_len;
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const guint8 *timestr;
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/* Server Nonce */
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snonce=tvb_get_ntohl(tvb, offset);
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|
proto_tree_add_uint(tree, hf_pktc_server_nonce, tvb, offset, 4, snonce);
|
|
offset+=4;
|
|
|
|
/* Server Kerberos Principal Identifier */
|
|
string_len=tvb_strsize(tvb, offset);
|
|
proto_tree_add_item(tree, hf_pktc_server_principal, tvb, offset, string_len, FALSE);
|
|
offset+=string_len;
|
|
|
|
/* Timestamp: YYMMDDhhmmssZ */
|
|
/* They really came up with a two-digit year in late 1990s! =8o */
|
|
timestr=tvb_get_ptr(tvb, offset, 13);
|
|
proto_tree_add_string_format(tree, hf_pktc_timestamp, tvb, offset, 13, timestr,
|
|
"%s: %.2s-%.2s-%.2s %.2s:%.2s:%.2s",
|
|
proto_registrar_get_name(hf_pktc_timestamp),
|
|
timestr, timestr+2, timestr+4, timestr+6, timestr+8, timestr+10);
|
|
offset+=13;
|
|
|
|
/* app specific data */
|
|
offset=dissect_pktc_app_specific_data(pinfo, tree, tvb, offset, doi, KMMID_REKEY);
|
|
|
|
/* list of ciphersuites */
|
|
offset=dissect_pktc_list_of_ciphersuites(pinfo, tree, tvb, offset, doi);
|
|
|
|
/* sec param lifetime */
|
|
proto_tree_add_item(tree, hf_pktc_sec_param_lifetime, tvb, offset, 4, FALSE);
|
|
offset+=4;
|
|
|
|
/* grace period */
|
|
proto_tree_add_item(tree, hf_pktc_grace_period, tvb, offset, 4, FALSE);
|
|
offset+=4;
|
|
|
|
/* re-establish flag */
|
|
proto_tree_add_item(tree, hf_pktc_reestablish_flag, tvb, offset, 1, FALSE);
|
|
offset+=1;
|
|
|
|
/* sha-1 hmac */
|
|
proto_tree_add_item(tree, hf_pktc_sha1_hmac, tvb, offset, 20, FALSE);
|
|
offset+=20;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_pktc_error_reply(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset)
|
|
{
|
|
tvbuff_t *pktc_tvb;
|
|
|
|
/* KRB_ERROR */
|
|
pktc_tvb = tvb_new_subset(tvb, offset, -1, -1);
|
|
offset += dissect_kerberos_main(pktc_tvb, pinfo, tree, FALSE, NULL);
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_pktc_mtafqdn_krbsafeuserdata(packet_info *pinfo, tvbuff_t *tvb, proto_tree *tree)
|
|
{
|
|
int offset=0, string_len=0;
|
|
guint8 msgtype;
|
|
guint32 bignum;
|
|
nstime_t ts;
|
|
|
|
/* message type */
|
|
msgtype = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_pktc_mtafqdn_msgtype, tvb, offset, 1, msgtype);
|
|
offset+=1;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(msgtype, pktc_mtafqdn_msgtype_vals, "MsgType %u"));
|
|
|
|
/* enterprise */
|
|
proto_tree_add_uint(tree, hf_pktc_mtafqdn_enterprise, tvb, offset, 4, tvb_get_ntohl(tvb, offset));
|
|
offset+=4;
|
|
|
|
/* protocol version */
|
|
proto_tree_add_uint(tree, hf_pktc_mtafqdn_version, tvb, offset, 1, tvb_get_guint8(tvb, offset));
|
|
offset+=1;
|
|
|
|
switch(msgtype) {
|
|
case PKTC_MTAFQDN_REQ:
|
|
/* MTA MAC address */
|
|
proto_tree_add_ether(tree, hf_pktc_mtafqdn_mac, tvb, offset, 6, tvb_get_ptr(tvb, offset, 6));
|
|
offset+=6;
|
|
|
|
/* MTA pub key hash */
|
|
proto_tree_add_item(tree, hf_pktc_mtafqdn_pub_key_hash, tvb, offset, 20, FALSE);
|
|
offset+=20;
|
|
|
|
/* manufacturer cert revocation time */
|
|
bignum = tvb_get_ntohl(tvb, offset);
|
|
ts.secs = bignum;
|
|
proto_tree_add_time_format(tree, hf_pktc_mtafqdn_manu_cert_revoked, tvb, offset, 4,
|
|
&ts, "%s: %s",
|
|
proto_registrar_get_name(hf_pktc_mtafqdn_manu_cert_revoked),
|
|
(bignum==0) ? "not revoked" : abs_time_secs_to_str(bignum));
|
|
break;
|
|
|
|
case PKTC_MTAFQDN_REP:
|
|
/* MTA FQDN */
|
|
string_len = tvb_length_remaining(tvb, offset) - 4;
|
|
if (string_len <= 0)
|
|
THROW(ReportedBoundsError);
|
|
proto_tree_add_item(tree, hf_pktc_mtafqdn_fqdn, tvb, offset, string_len, FALSE);
|
|
offset+=string_len;
|
|
|
|
/* MTA IP address */
|
|
tvb_memcpy(tvb, (guint8 *)&bignum, offset, sizeof(bignum));
|
|
proto_tree_add_ipv4(tree, hf_pktc_mtafqdn_ip, tvb, offset, 4, bignum);
|
|
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static kerberos_callbacks cb[] = {
|
|
{ KRB_CBTAG_SAFE_USER_DATA, dissect_pktc_mtafqdn_krbsafeuserdata },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_pktc_mtafqdn(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
int offset=0;
|
|
proto_tree *pktc_mtafqdn_tree = NULL;
|
|
proto_item *item = NULL;
|
|
tvbuff_t *pktc_mtafqdn_tvb;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PKTC");
|
|
|
|
if (tree) {
|
|
item = proto_tree_add_item(tree, proto_pktc, tvb, 0, 0, FALSE);
|
|
pktc_mtafqdn_tree = proto_item_add_subtree(item, ett_pktc_mtafqdn);
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "MTA FQDN %s",
|
|
pinfo->srcport == pinfo->match_port ? "Reply":"Request");
|
|
}
|
|
|
|
|
|
/* KRB_AP_RE[QP] */
|
|
pktc_mtafqdn_tvb = tvb_new_subset(tvb, offset, -1, -1);
|
|
offset += dissect_kerberos_main(pktc_mtafqdn_tvb, pinfo, pktc_mtafqdn_tree, FALSE, NULL);
|
|
|
|
/* KRB_SAFE */
|
|
pktc_mtafqdn_tvb = tvb_new_subset(tvb, offset, -1, -1);
|
|
offset += dissect_kerberos_main(pktc_mtafqdn_tvb, pinfo, pktc_mtafqdn_tree, FALSE, cb);
|
|
|
|
proto_item_set_len(item, offset);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_pktc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint8 kmmid, doi, version;
|
|
int offset=0;
|
|
proto_tree *pktc_tree = NULL;
|
|
proto_item *item = NULL;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PKTC");
|
|
|
|
if (tree) {
|
|
item = proto_tree_add_item(tree, proto_pktc, tvb, 0, 3, FALSE);
|
|
pktc_tree = proto_item_add_subtree(item, ett_pktc);
|
|
}
|
|
|
|
/* key management message id */
|
|
kmmid=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(pktc_tree, hf_pktc_kmmid, tvb, offset, 1, kmmid);
|
|
offset+=1;
|
|
|
|
/* domain of interpretation */
|
|
doi=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(pktc_tree, hf_pktc_doi, tvb, offset, 1, doi);
|
|
offset+=1;
|
|
|
|
/* version */
|
|
version=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(pktc_tree, tvb, offset, 1, "Version: %d.%d", (version>>4)&0x0f, (version)&0x0f);
|
|
proto_tree_add_uint_hidden(pktc_tree, hf_pktc_version_major, tvb, offset, 1, (version>>4)&0x0f);
|
|
proto_tree_add_uint_hidden(pktc_tree, hf_pktc_version_minor, tvb, offset, 1, (version)&0x0f);
|
|
offset+=1;
|
|
|
|
/* fill COL_INFO */
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(kmmid, kmmid_types, "Unknown KMMID %#x"));
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " (%s)",
|
|
val_to_str(doi, doi_types, "Unknown DOI %#x"));
|
|
}
|
|
|
|
switch(kmmid){
|
|
case KMMID_WAKEUP:
|
|
offset=dissect_pktc_wakeup(pktc_tree, tvb, offset);
|
|
break;
|
|
case KMMID_AP_REQUEST:
|
|
offset=dissect_pktc_ap_request(pinfo, pktc_tree, tvb, offset, doi);
|
|
break;
|
|
case KMMID_AP_REPLY:
|
|
offset=dissect_pktc_ap_reply(pinfo, pktc_tree, tvb, offset, doi);
|
|
break;
|
|
case KMMID_SEC_PARAM_REC:
|
|
offset=dissect_pktc_sec_param_rec(pktc_tree, tvb, offset);
|
|
break;
|
|
case KMMID_REKEY:
|
|
offset=dissect_pktc_rekey(pinfo, pktc_tree, tvb, offset, doi);
|
|
break;
|
|
case KMMID_ERROR_REPLY:
|
|
offset=dissect_pktc_error_reply(pinfo, pktc_tree, tvb, offset);
|
|
break;
|
|
};
|
|
|
|
proto_item_set_len(item, offset);
|
|
}
|
|
|
|
void
|
|
proto_register_pktc(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_pktc_kmmid, {
|
|
"Key Management Message ID", "pktc.kmmid", FT_UINT8, BASE_HEX,
|
|
VALS(kmmid_types), 0, "Key Management Message ID", HFILL }},
|
|
{ &hf_pktc_doi, {
|
|
"Domain of Interpretation", "pktc.doi", FT_UINT8, BASE_DEC,
|
|
VALS(doi_types), 0, "Domain of Interpretation", HFILL }},
|
|
{ &hf_pktc_version_major, {
|
|
"Major version", "pktc.version.major", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Major version of PKTC", HFILL }},
|
|
{ &hf_pktc_version_minor, {
|
|
"Minor version", "pktc.version.minor", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Minor version of PKTC", HFILL }},
|
|
{ &hf_pktc_server_nonce, {
|
|
"Server Nonce", "pktc.server_nonce", FT_UINT32, BASE_HEX,
|
|
NULL, 0, "Server Nonce random number", HFILL }},
|
|
{ &hf_pktc_server_principal, {
|
|
"Server Kerberos Principal Identifier", "pktc.server_principal", FT_STRING, BASE_DEC,
|
|
NULL, 0, "Server Kerberos Principal Identifier", HFILL }},
|
|
{ &hf_pktc_timestamp, {
|
|
"Timestamp", "pktc.timestamp", FT_STRING, BASE_NONE,
|
|
NULL, 0, "Timestamp (UTC)", HFILL }},
|
|
{ &hf_pktc_app_spec_data, {
|
|
"Application Specific Data", "pktc.asd", FT_NONE, BASE_HEX,
|
|
NULL, 0, "KMMID/DOI application specific data", HFILL }},
|
|
{ &hf_pktc_list_of_ciphersuites, {
|
|
"List of Ciphersuites", "pktc.ciphers", FT_NONE, BASE_HEX,
|
|
NULL, 0, "List of Ciphersuites", HFILL }},
|
|
{ &hf_pktc_list_of_ciphersuites_len, {
|
|
"Number of Ciphersuites", "pktc.ciphers.len", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Number of Ciphersuites", HFILL }},
|
|
{ &hf_pktc_snmpAuthenticationAlgorithm, {
|
|
"SNMPv3 Authentication Algorithm", "pktc.asd.snmp_auth_alg", FT_UINT8, BASE_HEX,
|
|
VALS(snmp_authentication_algorithm_vals), 0, "SNMPv3 Authentication Algorithm", HFILL }},
|
|
{ &hf_pktc_snmpEncryptionTransformID, {
|
|
"SNMPv3 Encryption Transform ID", "pktc.asd.snmp_enc_alg", FT_UINT8, BASE_HEX,
|
|
VALS(snmp_transform_id_vals), 0, "SNMPv3 Encryption Transform ID", HFILL }},
|
|
{ &hf_pktc_ipsecAuthenticationAlgorithm, {
|
|
"IPsec Authentication Algorithm", "pktc.asd.ipsec_auth_alg", FT_UINT8, BASE_HEX,
|
|
VALS(ipsec_authentication_algorithm_vals), 0, "IPsec Authentication Algorithm", HFILL }},
|
|
{ &hf_pktc_ipsecEncryptionTransformID, {
|
|
"IPsec Encryption Transform ID", "pktc.asd.ipsec_enc_alg", FT_UINT8, BASE_HEX,
|
|
VALS(ipsec_transform_id_vals), 0, "IPsec Encryption Transform ID", HFILL }},
|
|
{ &hf_pktc_snmpEngineID_len, {
|
|
"SNMPv3 Engine ID Length", "pktc.asd.snmp_engine_id.len", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Length of SNMPv3 Engine ID", HFILL }},
|
|
{ &hf_pktc_snmpEngineID, {
|
|
"SNMPv3 Engine ID", "pktc.asd.snmp_engine_id", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "SNMPv3 Engine ID", HFILL }},
|
|
{ &hf_pktc_snmpEngineBoots, {
|
|
"SNMPv3 Engine Boots", "pktc.asd.snmp_engine_boots", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "SNMPv3 Engine Boots", HFILL }},
|
|
{ &hf_pktc_snmpEngineTime, {
|
|
"SNMPv3 Engine Time", "pktc.asd.snmp_engine_time", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "SNMPv3 Engine ID Time", HFILL }},
|
|
{ &hf_pktc_usmUserName_len, {
|
|
"SNMPv3 USM User Name Length", "pktc.asd.snmp_usm_username.len", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "Length of SNMPv3 USM User Name", HFILL }},
|
|
{ &hf_pktc_usmUserName, {
|
|
"SNMPv3 USM User Name", "pktc.asd.snmp_usm_username", FT_STRING, BASE_DEC,
|
|
NULL, 0, "SNMPv3 USM User Name", HFILL }},
|
|
{ &hf_pktc_ipsec_spi, {
|
|
"IPsec Security Parameter Index", "pktc.asd.ipsec_spi", FT_UINT32, BASE_HEX,
|
|
NULL, 0, "Security Parameter Index for inbound Security Association (IPsec)", HFILL }},
|
|
{ &hf_pktc_reestablish_flag, {
|
|
"Re-establish Flag", "pktc.reestablish", FT_BOOLEAN, BASE_NONE,
|
|
NULL, 0, "Re-establish Flag", HFILL }},
|
|
{ &hf_pktc_ack_required_flag, {
|
|
"ACK Required Flag", "pktc.ack_required", FT_BOOLEAN, BASE_NONE,
|
|
NULL, 0, "ACK Required Flag", HFILL }},
|
|
{ &hf_pktc_sec_param_lifetime, {
|
|
"Security Parameter Lifetime", "pktc.spl", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Lifetime in seconds of security parameter", HFILL }},
|
|
{ &hf_pktc_sha1_hmac, {
|
|
"SHA-1 HMAC", "pktc.sha1_hmac", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "SHA-1 HMAC", HFILL }},
|
|
{ &hf_pktc_grace_period, {
|
|
"Grace Period", "pktc.grace_period", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Grace Period in seconds", HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_pktc,
|
|
&ett_pktc_app_spec_data,
|
|
&ett_pktc_list_of_ciphersuites,
|
|
&ett_pktc_engineid,
|
|
};
|
|
|
|
proto_pktc = proto_register_protocol("PacketCable", "PKTC", "pktc");
|
|
proto_register_field_array(proto_pktc, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_pktc(void)
|
|
{
|
|
dissector_handle_t pktc_handle;
|
|
|
|
pktc_handle = create_dissector_handle(dissect_pktc, proto_pktc);
|
|
dissector_add("udp.port", PKTC_PORT, pktc_handle);
|
|
}
|
|
|
|
|
|
void
|
|
proto_register_pktc_mtafqdn(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_pktc_mtafqdn_msgtype, {
|
|
"Message Type", "pktc.mtafqdn.msgtype", FT_UINT8, BASE_DEC,
|
|
VALS(pktc_mtafqdn_msgtype_vals), 0, "MTA FQDN Message Type", HFILL }},
|
|
{ &hf_pktc_mtafqdn_enterprise, {
|
|
"Enterprise Number", "pktc.mtafqdn.enterprise", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Enterprise Number", HFILL }},
|
|
{ &hf_pktc_mtafqdn_version, {
|
|
"Protocol Version", "pktc.mtafqdn.version", FT_UINT8, BASE_DEC,
|
|
NULL, 0, "MTA FQDN Protocol Version", HFILL }},
|
|
/* MTA FQDN REQ */
|
|
{ &hf_pktc_mtafqdn_mac, {
|
|
"MTA MAC address", "pktc.mtafqdn.mac", FT_ETHER, BASE_NONE,
|
|
NULL, 0, "MTA MAC address", HFILL }},
|
|
{ &hf_pktc_mtafqdn_pub_key_hash, {
|
|
"MTA Public Key Hash", "pktc.mtafqdn.pub_key_hash", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "MTA Public Key Hash (SHA-1)", HFILL }},
|
|
{ &hf_pktc_mtafqdn_manu_cert_revoked, {
|
|
"Manufacturer Cert Revocation Time", "pktc.mtafqdn.manu_cert_revoked", FT_ABSOLUTE_TIME, BASE_NONE,
|
|
NULL, 0, "Manufacturer Cert Revocation Time (UTC) or 0 if not revoked", HFILL }},
|
|
/* MTA FQDN REP */
|
|
{ &hf_pktc_mtafqdn_fqdn, {
|
|
"MTA FQDN", "pktc.mtafqdn.fqdn", FT_STRING, BASE_NONE,
|
|
NULL, 0, "MTA FQDN", HFILL }},
|
|
{ &hf_pktc_mtafqdn_ip, {
|
|
"MTA IP Address", "pktc.mtafqdn.ip", FT_IPv4, BASE_NONE,
|
|
NULL, 0, "MTA IP Address (all zeros if not supplied)", HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_pktc_mtafqdn,
|
|
};
|
|
|
|
proto_register_field_array(proto_pktc, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_pktc_mtafqdn(void)
|
|
{
|
|
dissector_handle_t pktc_mtafqdn_handle;
|
|
|
|
pktc_mtafqdn_handle = create_dissector_handle(dissect_pktc_mtafqdn, proto_pktc);
|
|
dissector_add("udp.port", PKTC_MTAFQDN_PORT, pktc_mtafqdn_handle);
|
|
}
|