forked from osmocom/wireshark
1900 lines
59 KiB
C
1900 lines
59 KiB
C
/* packet-nas_eps.c
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* Routines for Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS) dissection
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*
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* Copyright 2008 - 2009, Anders Broman <anders.broman@ericsson.com>
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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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* References: 3GPP TS 24.301 V8.0.0 (2008-12)
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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 <glib.h>
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#include <epan/packet.h>
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#include "packet-gsm_a_common.h"
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#define PNAME "Non-Access-Stratum (NAS)PDU"
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#define PSNAME "NAS-EPS"
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#define PFNAME "nas-eps"
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/* Initialize the protocol and registered fields */
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static int proto_nas_eps = -1;
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static int hf_nas_eps_msg_emm_type = -1;
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int hf_nas_eps_common_elem_id = -1;
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int hf_nas_emm_elem_id = -1;
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static int hf_nas_eps_spare_bits = -1;
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static int hf_nas_eps_security_header_type = -1;
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static int hf_nas_eps_emm_eps_att_type = -1;
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static int hf_nas_eps_emm_nas_key_set_id = -1;
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static int hf_nas_eps_emm_odd_even = -1;
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static int hf_nas_eps_emm_type_of_id = -1;
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static int hf_nas_eps_emm_EPS_attach_result = -1;
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static int hf_nas_eps_emm_spare_half_octet = -1;
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static int hf_nas_eps_emm_res = -1;
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static int hf_nas_eps_emm_cause = -1;
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static int hf_nas_eps_emm_short_mac = -1;
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static int hf_nas_eps_active_flg = -1;
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static int hf_nas_eps_eps_update_result_value = -1;
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static int hf_nas_eps_eps_update_type_value = -1;
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static int hf_nas_eps_service_type = -1;
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/* Initialize the subtree pointers */
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static int ett_nas_eps = -1;
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/* Table 9.8.1: Message types for EPS mobility management
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* 0 1 - - - - - - EPS mobility management messages
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*/
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static const value_string nas_msg_emm_strings[] = {
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{ 0x41, "Attach request"},
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{ 0x42, "Attach accept"},
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{ 0x43, "Attach complete"},
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{ 0x44, "Attach reject"},
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{ 0x45, "Detach request"},
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{ 0x46, "Detach accept"},
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{ 0x48, "Tracking area update request"},
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{ 0x49, "Tracking area update accept"},
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{ 0x4a, "Tracking area update complete"},
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{ 0x4b, "Tracking area update reject"},
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{ 0x4c, "Extended service request"},
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{ 0x4e, "Service reject"},
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{ 0x50, "GUTI reallocation command"},
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{ 0x51, "GUTI reallocation complete"},
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{ 0x52, "Authentication request"},
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{ 0x53, "Authentication response"},
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{ 0x54, "Authentication reject"},
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{ 0x5a, "Authentication failure"},
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{ 0x55, "Identity request"},
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{ 0x56, "Identity response"},
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{ 0x5d, "Security mode command"},
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{ 0x5e, "Security mode complete"},
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{ 0x5f, "Security mode reject"},
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{ 0x60, "EMM status"},
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{ 0x61, "EMM information"},
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{ 0x62, "Downlink NAS transport"},
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{ 0x63, "Uplink NAS transport"},
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{ 0, NULL }
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};
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static const value_string security_header_type_vals[] = {
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{ 0, "Not security protected, plain NAS message"},
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{ 1, "Security protected NAS message"},
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{ 2, "Reserved"},
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{ 3, "Reserved"},
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{ 4, "Reserved"},
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{ 5, "Reserved"},
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{ 6, "Reserved"},
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{ 7, "Reserved"},
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{ 8, "Reserved"},
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{ 9, "Reserved"},
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{ 10, "Reserved"},
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{ 11, "Reserved"},
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{ 12, "Security header for the SERVICE REQUEST message "},
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{ 13, "These values are not used in this version of the protocol. If received they shall be interpreted as \"1100\". (NOTE)"},
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{ 14, "These values are not used in this version of the protocol. If received they shall be interpreted as \"1100\". (NOTE)"},
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{ 15, "These values are not used in this version of the protocol. If received they shall be interpreted as \"1100\". (NOTE)"},
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{ 0, NULL }
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};
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const value_string nas_eps_common_elem_strings[] = {
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{ 0x00, "EPS bearer context status" }, /* 9.9.2.1 EPS bearer context status */
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{ 0x00, "Location area identification" }, /* 9.9.2.2 Location area identification */
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{ 0x00, "Mobile identity" }, /* 9.9.2.3 Mobile identity */
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{ 0x00, "Mobile station classmark 2" }, /* 9.9.2.4 Mobile station classmark 2 */
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{ 0x00, "Mobile station classmark 3" }, /* 9.9.2.5 Mobile station classmark 3 */
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{ 0x00, "PLMN list" }, /* 9.9.2.5 PLMN list */
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{ 0x00, "Supported codec list" }, /* 9.9.2.8 Supported codec list */
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{ 0, NULL }
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};
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#define NUM_NAS_EPS_COMMON_ELEM (sizeof(nas_eps_common_elem_strings)/sizeof(value_string))
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gint ett_nas_eps_common_elem[NUM_NAS_EPS_COMMON_ELEM];
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typedef enum
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{
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DE_EPS_CMN_EPS_BE_CTX_STATUS, /* 9.9.2.1 EPS bearer context status */
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DE_EPS_CMN_LOC_AREA_ID, /* 9.9.2.2 Location area identification */
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DE_EPS_CMN_MOB_ID, /* 9.9.2.3 Mobile identity */
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DE_EPS_MS_CM_2, /* 9.9.2.4 Mobile station classmark 2 */
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DE_EPS_MS_CM_3, /* 9.9.2.5 Mobile station classmark 3 */
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DE_EPS_CMN_PLM_LST, /* 9.9.2.6 PLMN list */
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DE_EPS_CMN_SUP_CODEC_LST, /* 9.9.2.6 9.9.2.8 Supported codec list */
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DE_EPS_COMMON_NONE /* NONE */
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}
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nas_eps_common_elem_idx_t;
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/*
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* 9.9.2 Common information elements
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*/
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/*
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* 9.9.2.1 EPS bearer context status
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*/
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static guint16
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de_eps_cmn_eps_be_ctx_status(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
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{
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guint32 curr_offset;
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curr_offset = offset;
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proto_tree_add_text(tree, tvb, curr_offset, len , "Not decoded yet");
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return len;
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}
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/*
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* 9.9.2.2 Location area identification
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* See subclause 10.5.1.3 in 3GPP TS 24.008 [6].
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*/
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/*
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* 9.9.2.3 Mobile identity
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* See subclause 10.5.1.4 in 3GPP TS 24.008 [6].
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* exported from gsm_a_common
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*/
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/*
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* 9.9.2.4 Mobile station classmark 2
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* See subclause 10.5.1.6 in 3GPP TS 24.008 [13].
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*/
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/*
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* 9.9.2.5 Mobile station classmark 3
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* See subclause 10.5.1.7 in 3GPP TS 24.008 [13].
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*/
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/*
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* 9.9.2.6 PLMN list
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* See subclause 10.5.1.13 in 3GPP TS 24.008 [6].
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*/
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/*
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* 9.9.2.7 Spare half octet
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* This element is used in the description of EMM and ESM messages when an odd number of
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* half octet type 1 information elements are used. This element is filled with spare bits
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* set to zero and is placed in bits 5 to 8 of the octet unless otherwise specified.
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*
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*/
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/*
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* 9.9.2.8 Supported codec list
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* See subclause 10.5.4.32 in 3GPP TS 24.008 [13].
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* Dissectecd in packet-gsm_a_dtap.c
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*/
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guint16 (*nas_eps_common_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len, gchar *add_string, int string_len) = {
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/* 9.9.2 Common information elements */
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de_eps_cmn_eps_be_ctx_status, /* 9.9.2.1 EPS bearer context status */
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de_lai, /* 9.9.2.2 Location area identification */
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de_mid, /* 9.9.2.3 Mobile identity */
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de_ms_cm_2, /* 9.9.2.4 Mobile station classmark 2 */
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de_ms_cm_3, /* 9.9.2.5 Mobile station classmark 3 */
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de_plmn_list, /* 9.9.2.6 PLMN list */
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NULL, /* 9.9.2.8 Supported codec list (packet-gsm_a_dtap.c) */
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NULL, /* NONE */
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};
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const value_string nas_emm_elem_strings[] = {
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/* 9.9.3 EPS Mobility Management (EMM) information elements */
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{ 0x00, "Authentication failure parameter" }, /* 9.9.3.1 Authentication failure parameter */
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{ 0x00, "Authentication parameter AUTN" }, /* 9.9.3.2 Authentication parameter AUTN */
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{ 0x00, "Authentication parameter RAND" }, /* 9.9.3.3 Authentication parameter RAND */
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{ 0x00, "Authentication response parameter" }, /* 9.9.3.4 Authentication response parameter */
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{ 0x00, "CSFB response" }, /* 9.9.3.5 CSFB response */
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{ 0x00, "Daylight saving time" }, /* 9.9.3.6 Daylight saving time */
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{ 0x00, "Detach type" }, /* 9.9.3.7 Detach type */
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{ 0x00, "DRX parameter" }, /* 9.9.3.8 DRX parameter */
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{ 0x00, "EMM cause" }, /* 9.9.3.9 EMM cause */
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{ 0x00, "EPS attach result" }, /* 9.9.3.10 EPS attach result */
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{ 0x00, "EPS attach type" }, /* 9.9.3.11 EPS attach type */
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{ 0x00, "EPS mobile identity" }, /* 9.9.3.12 EPS mobile identity */
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{ 0x00, "EPS update resul" }, /* 9.9.3.13 EPS update result */
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{ 0x00, "EPS update type" }, /* 9.9.3.14 EPS update type */
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{ 0x00, "ESM message container" }, /* 9.9.3.15 ESM message conta */
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{ 0x00, "GPRS timer" }, /* 9.9.3.16 GPRS timer ,See subclause 10.5.7.3 in 3GPP TS 24.008 [6]. */
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{ 0x00, "Identity type 2" }, /* 9.9.3.17 Identity type 2 ,See subclause 10.5.5.9 in 3GPP TS 24.008 [6]. */
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{ 0x00, "IMEISV request" }, /* 9.9.3.18 IMEISV request ,See subclause 10.5.5.10 in 3GPP TS 24.008 [6]. */
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{ 0x00, "KSI and sequence number" }, /* 9.9.3.19 KSI and sequence number */
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{ 0x00, "MS network capability" }, /* 9.9.3.20 MS network capability ,See subclause 10.5.5.12 in 3GPP TS 24.008 [6]. */
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{ 0x00, "NAS key set identifier" }, /* 9.9.3.21 NAS key set identifier */
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{ 0x00, "NAS message container" }, /* 9.9.3.22 NAS message container */
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{ 0x00, "NAS security algorithms" }, /* 9.9.3.23 NAS security algorithms */
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{ 0x00, "Network name" }, /* 9.9.3.24 Network name, See subclause 10.5.3.5a in 3GPP TS 24.008 [6]. */
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{ 0x00, "Nonce" }, /* 9.9.3.25 Nonce */
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{ 0x00, "P-TMSI signature" }, /* 9.9.3.26 P-TMSI signature, See subclause 10.5.5.8 in 3GPP TS 24.008 [6]. */
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{ 0x00, "Service type" }, /* 9.9.3.27 Service type ,See subclause 10.5.5.15 in 3GPP TS 24.008 [6]. */
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{ 0x00, "Short MAC" }, /* 9.9.3.28 Short MAC */
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{ 0x00, "Time zone" }, /* 9.9.3.29 Time zone, See subclause 10.5.3.8 in 3GPP TS 24.008 [6]. */
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{ 0x00, "Time zone and time" }, /* 9.9.3.30 Time zone and time, See subclause 10.5.3.9 in 3GPP TS 24.008 [6]. */
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{ 0x00, "TMSI status" }, /* 9.9.3.31 TMSI status, See subclause 10.5.5.4 in 3GPP TS 24.008 [6]. */
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{ 0x00, "Tracking area identity" }, /* 9.9.3.32 Tracking area identity */
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{ 0x00, "Tracking area identity list" }, /* 9.9.3.33 Tracking area identity list */
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{ 0x00, "UE network capability" }, /* 9.9.3.34 UE network capability */
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{ 0x00, "UE radio capability information update needed" }, /* 9.9.3.35 UE radio capability information update needed */
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{ 0x00, "UE security capability" }, /* 9.9.3.36 UE security capability */
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{ 0, NULL }
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};
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#define NUM_NAS_EMM_ELEM (sizeof(nas_emm_elem_strings)/sizeof(value_string))
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gint ett_nas_emm_elem[NUM_NAS_EMM_ELEM];
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typedef enum
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{
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/* 9.9.3 EPS Mobility Management (EMM) information elements */
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DE_EMM_AUTH_FAIL_PAR, /* 9.9.3.1 Authentication failure parameter (dissected in packet-gsm_a_dtap.c)*/
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DE_EMM_AUTN, /* 9.9.3.2 Authentication parameter AUTN */
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DE_EMM_AUTH_PAR_RAND, /* 9.9.3.3 Authentication parameter RAND */
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DE_EMM_AUTH_RESP_PAR, /* 9.9.3.4 Authentication response parameter */
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DE_EMM_CSFB_RESP, /* 9.9.3.5 CSFB response */
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DE_EMM_DAYL_SAV_T, /* 9.9.3.6 Daylight saving time */
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DE_EMM_DET_TYPE, /* 9.9.3.7 Detach type */
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DE_EMM_DRX_PAR, /* 9.9.3.8 DRX parameter (dissected in packet-gsm_a_gm.c)*/
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DE_EMM_CAUSE, /* 9.9.3.9 EMM cause */
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DE_EMM_ATT_RES, /* 9.9.3.10 EPS attach result (Coded inline */
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DE_EMM_ATT_TYPE, /* 9.9.3.11 EPS attach type (Coded Inline)*/
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DE_EMM_EPS_MID, /* 9.9.3.12 EPS mobile identity */
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DE_EMM_EPS_UPD_RES, /* 9.9.3.13 EPS update result ( Coded inline)*/
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DE_EMM_EPS_UPD_TYPE, /* 9.9.3.14 EPS update type */
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DE_EMM_ESM_MSG_CONT, /* 9.9.3.15 ESM message conta */
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DE_EMM_GPRS_TIMER, /* 9.9.3.16 GPRS timer ,See subclause 10.5.7.3 in 3GPP TS 24.008 [6]. */
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DE_EMM_ID_TYPE_2, /* 9.9.3.17 Identity type 2 ,See subclause 10.5.5.9 in 3GPP TS 24.008 [6]. */
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DE_EMM_IMEISV_REQ, /* 9.9.3.18 IMEISV request ,See subclause 10.5.5.10 in 3GPP TS 24.008 [6]. */
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DE_EMM_KSI_AND_SEQ_NO, /* 9.9.3.19 KSI and sequence number */
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DE_EMM_MS_NET_CAP, /* 9.9.3.20 MS network capability ,See subclause 10.5.5.12 in 3GPP TS 24.008 [6]. */
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DE_EMM_NAS_KEY_SET_ID, /* 9.9.3.21 NAS key set identifier (coded inline)*/
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DE_EMM_NAS_MSG_CONT, /* 9.9.3.22 NAS message container */
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DE_EMM_NAS_SEC_ALGS, /* 9.9.3.23 NAS security algorithms */
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DE_EMM_NET_NAME, /* 9.9.3.24 Network name, See subclause 10.5.3.5a in 3GPP TS 24.008 [6]. */
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DE_EMM_NONCE, /* 9.9.3.25 Nonce */
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DE_EMM_P_TMSI, /* 9.9.3.22 P-TMSI, See subclause 10.5.1.4 in 3GPP TS 24.008 [6]. */
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DE_EMM_P_TMSI_SIGN, /* 9.9.3.26 P-TMSI signature, See subclause 10.5.5.8 in 3GPP TS 24.008 [6]. */
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DE_EMM_SERV_TYPE, /* 9.9.3.27 Service type */
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DE_EMM_SHORT_MAC, /* 9.9.3.28 Short MAC */
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DE_EMM_TZ, /* 9.9.3.29 Time zone, See subclause 10.5.3.8 in 3GPP TS 24.008 [6]. */
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DE_EMM_TZ_AND_T, /* 9.9.3.30 Time zone and time, See subclause 10.5.3.9 in 3GPP TS 24.008 [6]. */
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DE_EMM_TMSI_STAT, /* 9.9.3.31 TMSI status, See subclause 10.5.5.4 in 3GPP TS 24.008 [6]. */
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DE_EMM_TRAC_AREA_ID, /* 9.9.3.32 Tracking area identity */
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DE_EMM_TRAC_AREA_ID_LST, /* 9.9.3.33 Tracking area identity list */
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DE_EMM_UE_NET_CAP, /* 9.9.3.34 UE network capability */
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DE_EMM_UE_RA_CAP_INF_UPD_NEED, /* 9.9.3.35 UE radio capability information update needed */
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DE_EMM_UE_SEC_CAP, /* 9.9.3.36 UE security capability */
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DE_EMM_NONE /* NONE */
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}
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nas_emm_elem_idx_t;
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/* TODO: Update to latest spec */
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/* 9.9.3 EPS Mobility Management (EMM) information elements
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* 9.9.3.1 Authentication failure parameter
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* See subclause 10.5.3.2.2 in 3GPP TS 24.008 [6].
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* (dissected in packet-gsm_a_dtap.c)
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*/
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/*
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* 9.9.3.2 Authentication parameter AUTN
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* See subclause 10.5.3.1.1 in 3GPP TS 24.008 [6].
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*/
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/*
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* 9.9.3.3 Authentication parameter RAND
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* See subclause 10.5.3.1 in 3GPP TS 24.008 [6].
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*/
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/*
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* 9.9.3.4 Authentication response parameter
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*/
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static guint16
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de_emm_auth_resp_par(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
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{
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guint32 curr_offset;
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curr_offset = offset;
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proto_tree_add_item(tree, hf_nas_eps_emm_res, tvb, curr_offset, len, FALSE);
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return len;
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}
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/*
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* 9.9.3.5 CSFB response
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*/
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static guint16
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de_emm_csfb_resp(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
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{
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guint32 curr_offset;
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curr_offset = offset;
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proto_tree_add_text(tree, tvb, curr_offset, 1, "Not decoded yet");
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curr_offset++;
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return(curr_offset-offset);
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}
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/*
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* 9.9.3.6 Daylight saving time
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* See subclause 10.5.3.12 in 3GPP TS 24.008 [6].
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*/
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/*
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* 9.9.3.7 Detach type
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*/
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/*
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Type of detach (octet 1)
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In the UE to network direction:
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Bits
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3 2 1
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0 0 1 EPS detach
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0 1 0 IMSI detach
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0 1 1 combined EPS/IMSI detach
|
|
|
|
All other values are interpreted as "combined EPS/IMSI detach" in this version of the protocol.
|
|
|
|
In the network to UE direction:
|
|
Bits
|
|
3 2 1
|
|
0 0 1 re-attach required
|
|
0 1 0 re-attach not required
|
|
0 1 1 IMSI detach
|
|
|
|
All other values are interpreted as "re-attach not required" in this version of the protocol.
|
|
|
|
Switch off (octet 1)
|
|
|
|
In the UE to network direction:
|
|
Bit
|
|
4
|
|
0 normal detach
|
|
1 switch off
|
|
|
|
In the network to UE direction bit 4 is spare. The network shall set this bit to zero.
|
|
*/
|
|
/*
|
|
* 9.9.3.8 DRX parameter
|
|
* See subclause 10.5.5.6 in 3GPP TS 24.008 [13].
|
|
*/
|
|
/*
|
|
* 9.9.3.9 EMM cause
|
|
*/
|
|
static const value_string nas_eps_emm_cause_values[] = {
|
|
{ 0x2, "IMSI unknown in HLR"},
|
|
{ 0x3, "Illegal MS"},
|
|
{ 0x6, "Illegal ME"},
|
|
{ 0x7, "EPS services not allowed"},
|
|
{ 0x8, "EPS services and non-EPS services not allowed"},
|
|
{ 0x9, "UE identity cannot be derived by the network"},
|
|
{ 0xa, "Implicitly detached"},
|
|
{ 0xb, "PLMN not allowed"},
|
|
{ 0xc, "Tracking Area not allowed"},
|
|
{ 0xd, "Roaming not allowed in this tracking area"},
|
|
{ 0xe, "EPS services not allowed in this PLMN"},
|
|
{ 0xf, "No Suitable Cells In tracking area"},
|
|
{ 0x10, "MSC temporarily not reachable"},
|
|
{ 0x11, "Network failure"},
|
|
{ 0x12, "CS domain not available"},
|
|
{ 0x13, "ESM failure"},
|
|
{ 0x14, "MAC failure"},
|
|
{ 0x15, "Synch failure"},
|
|
{ 0x16, "Congestion"},
|
|
{ 0x17, "UE security capabilities mismatch"},
|
|
{ 0x18, "Security mode rejected, unspecified"},
|
|
{ 0x19, "Not authorized for this CSG"},
|
|
{ 0x26, "CS fallback call establishment not allowed"},
|
|
{ 0x27, "CS domain temporarily not available"},
|
|
{ 0x28, "No EPS bearer context activated"},
|
|
{ 0x5f, "Semantically incorrect message"},
|
|
{ 0x60, "Invalid mandatory information"},
|
|
{ 0x61, "Message type non-existent or not implemented"},
|
|
{ 0x62, "Message type not compatible with the protocol state"},
|
|
{ 0x63, "Information element non-existent or not implemented"},
|
|
{ 0x64, "Conditional IE error"},
|
|
{ 0x65, "Message not compatible with the protocol state"},
|
|
{ 0x6f, "Protocol error, unspecified"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static guint16
|
|
de_emm_cause(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
proto_tree_add_item(tree, hf_nas_eps_emm_cause, tvb, curr_offset, len, FALSE);
|
|
curr_offset++;
|
|
|
|
return curr_offset-offset;}
|
|
/*
|
|
* 9.9.3.10 EPS attach result
|
|
*/
|
|
|
|
static const value_string nas_eps_emm_EPS_attach_result_values[] = {
|
|
{ 0, "reserved"},
|
|
{ 1, "EPS only"},
|
|
{ 2, "Combined EPS/IMSI attach"},
|
|
{ 3, "reserved"},
|
|
{ 4, "reserved"},
|
|
{ 5, "reserved"},
|
|
{ 6, "reserved"},
|
|
{ 7, "reserved"},
|
|
{ 0, NULL }
|
|
};
|
|
/* Coded inline */
|
|
|
|
/*
|
|
* 9.9.3.11 EPS attach type
|
|
*/
|
|
|
|
static const value_string nas_eps_emm_eps_att_type_vals[] = {
|
|
{ 0, "EPS attach(unused)"},
|
|
{ 1, "EPS attach"},
|
|
{ 2, "EPS attach(unused)"},
|
|
{ 3, "EPS attach(unused)"},
|
|
{ 4, "Combined handover EPS/IMSI attach"},
|
|
{ 5, "EPS attach(unused)"},
|
|
{ 6, "EPS attach(unused)"},
|
|
{ 7, "EPS attach(unused)"},
|
|
{ 0, NULL }
|
|
};
|
|
/* Coded inline */
|
|
|
|
/*
|
|
* 9.9.3.12 EPS mobile identity
|
|
*/
|
|
|
|
static const value_string nas_eps_emm_type_of_id_vals[] = {
|
|
{ 0, "IMSI"},
|
|
{ 1, "reserved"},
|
|
{ 2, "reserved"},
|
|
{ 3, "reserved"},
|
|
{ 4, "reserved"},
|
|
{ 5, "reserved"},
|
|
{ 6, "GUTI"},
|
|
{ 7, "reserved"},
|
|
{ 0, NULL }
|
|
};
|
|
static guint16
|
|
de_emm_eps_mid(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
guint8 octet;
|
|
|
|
curr_offset = offset;
|
|
|
|
octet = tvb_get_guint8(tvb,offset);
|
|
if ((octet&0x7) == 1){
|
|
/* IMSI */
|
|
proto_tree_add_item(tree, hf_nas_eps_emm_odd_even, tvb, curr_offset, 1, FALSE);
|
|
}
|
|
/* Type of identity (octet 3) */
|
|
proto_tree_add_item(tree, hf_nas_eps_emm_type_of_id, tvb, curr_offset, 1, FALSE);
|
|
curr_offset++;
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len - 1, "Not decoded yet");
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.13 EPS update result
|
|
*/
|
|
static const value_string nas_eps_emm_eps_update_result_vals[] = {
|
|
{ 0, "TA updated"},
|
|
{ 1, "Combined TA/LA updated"},
|
|
{ 2, "TA updated and ISR activated"},
|
|
{ 3, "Combined TA/LA updated and ISR activated"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* 9.9.3.14 EPS update type
|
|
*/
|
|
static const true_false_string nas_eps_emm_active_flg_value = {
|
|
"Bearer establishment requested",
|
|
"No bearer establishment requested"
|
|
};
|
|
|
|
static const value_string nas_eps_emm_eps_update_type_vals[] = {
|
|
{ 0, "TA updating"},
|
|
{ 1, "Combined TA/LA updating"},
|
|
{ 2, "Combined TA/LA updating with IMSI attach"},
|
|
{ 3, "Periodic updating"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* 9.9.3.15 ESM message conta
|
|
*/
|
|
static guint16
|
|
de_emm_esm_msg_cont(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len, "Not decoded yet");
|
|
/* This IE can contain any ESM PDU as defined in subclause 8.3. */
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.16 GPRS timer
|
|
* See subclause 10.5.7.3 in 3GPP TS 24.008 [6].
|
|
* packet-gsm_a_gm.c
|
|
*/
|
|
/*
|
|
* 9.9.3.17 Identity type 2
|
|
* See subclause 10.5.5.9 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.18 IMEISV request
|
|
* See subclause 10.5.5.10 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.19 KSI and sequence number
|
|
*/
|
|
|
|
/*
|
|
* 9.9.3.20 MS network capability
|
|
* See subclause 10.5.5.12 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.21 NAS key set identifier
|
|
*/
|
|
/*
|
|
Bit
|
|
4
|
|
0 cached security context
|
|
1 mapped security context
|
|
*/
|
|
|
|
static const value_string nas_eps_emm_NAS_key_set_identifier_vals[] = {
|
|
{ 0, ""},
|
|
{ 1, ""},
|
|
{ 2, ""},
|
|
{ 3, ""},
|
|
{ 4, ""},
|
|
{ 5, ""},
|
|
{ 6, ""},
|
|
{ 7, "No key is available"},
|
|
{ 0, NULL }
|
|
};
|
|
/* Coded Inline */
|
|
|
|
/*
|
|
* 9.9.3.22 NAS message container
|
|
*/
|
|
static guint16
|
|
de_emm_nas_msg_cont(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len , "Not decoded yet");
|
|
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.23 NAS security algorithms
|
|
*/
|
|
static guint16
|
|
de_emm_nas_sec_alsgs(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, 1 , "Not decoded yet");
|
|
curr_offset++;
|
|
|
|
return(curr_offset-offset);
|
|
}
|
|
/*
|
|
* 9.9.3.24 Network name
|
|
* See subclause 10.5.3.5a in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.25 Nonce
|
|
* Editor's note: The coding of this information element is FFS.
|
|
*/
|
|
static guint16
|
|
de_emm_nonce(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, 5 , "Not decoded yet");
|
|
curr_offset+=5;
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.26 P-TMSI signature
|
|
* See subclause 10.5.5.8 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.27 Service type
|
|
*/
|
|
static const value_string nas_eps_service_type_vals[] = {
|
|
{ 0, "Mobile originating CS fallback"},
|
|
{ 1, "Mobile terminating CS fallback"},
|
|
{ 2, "Mobile originating CS fallback emergency call"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* 9.9.3.28 Short MAC
|
|
*/
|
|
static guint16
|
|
de_emm_nas_short_mac(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_item(tree, hf_nas_eps_emm_short_mac, tvb, curr_offset, 2, FALSE);
|
|
curr_offset+=2;
|
|
|
|
return(curr_offset-offset);
|
|
}
|
|
/*
|
|
* 9.9.3.29 Time zone
|
|
* See subclause 10.5.3.8 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.30 Time zone and time
|
|
* See subclause 10.5.3.9 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.31 TMSI status
|
|
* See subclause 10.5.5.4 in 3GPP TS 24.008 [6].
|
|
*/
|
|
/*
|
|
* 9.9.3.32 Tracking area identity
|
|
*/
|
|
static guint16
|
|
de_emm_trac_area_id(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, 6 , "Not decoded yet");
|
|
curr_offset+=6;
|
|
|
|
return(curr_offset-offset);
|
|
}
|
|
/*
|
|
* 9.9.3.33 Tracking area identity list
|
|
*/
|
|
static guint16
|
|
de_emm_trac_area_id_lst(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len , "Not decoded yet");
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.34 UE network capability
|
|
*/
|
|
static guint16
|
|
de_emm_ue_net_cap(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len , "Not decoded yet");
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.3.35 UE radio capability information update needed
|
|
*/
|
|
|
|
static guint16
|
|
de_emm_ue_ra_cap_inf_upd_need(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, 1 , "Not decoded yet");
|
|
curr_offset++;
|
|
|
|
return(curr_offset-offset);
|
|
}
|
|
/*
|
|
* 9.9.3.36 UE security capability
|
|
*/
|
|
|
|
static guint16
|
|
de_emm_ue_sec_cap(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
|
|
{
|
|
guint32 curr_offset;
|
|
|
|
curr_offset = offset;
|
|
|
|
|
|
proto_tree_add_text(tree, tvb, curr_offset, len , "Not decoded yet");
|
|
|
|
return(len);
|
|
}
|
|
/*
|
|
* 9.9.4 EPS Session Management (ESM) information elements
|
|
*
|
|
* 9.9.4.1 Access point name
|
|
* See subclause 10.5.6.1 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.2 ESM cause
|
|
* 9.9.4.2a ESM information transfer flag
|
|
* Editor's note: The coding of this information element is FFS.
|
|
* 9.9.4.3 Linked EPS bearer identity
|
|
* 9.9.4.4 LLC service access point identifier
|
|
* See subclause 10.5.6.9 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.5 Packet flow identifier
|
|
* See subclause 10.5.6.11 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.6 PDN address
|
|
* 9.9.4.7 PDN type
|
|
* 9.9.4.8 Protocol configuration options
|
|
* See subclause 10.5.6.3 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.9 Quality of service
|
|
* See subclause 10.5.6.5 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.10 Radio priority
|
|
* See subclause 10.5.7.2 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.11 Request type
|
|
* 9.9.4.12 SDF quality of service
|
|
* 9.9.4.13 Traffic flow template
|
|
* See subclause 10.5.6.12 in 3GPP TS 24.008 [6].
|
|
* 9.9.4.14 Transaction identifier
|
|
*/
|
|
|
|
guint16 (*emm_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len, gchar *add_string, int string_len) = {
|
|
/* 9.9.3 EPS Mobility Management (EMM) information elements */
|
|
NULL, /* 9.9.3.1 Authentication failure parameter(dissected in packet-gsm_a_dtap.c) */
|
|
NULL, /* 9.9.3.2 Authentication parameter AUTN(packet-gsm_a_dtap.c) */
|
|
NULL, /* 9.9.3.3 Authentication parameter RAND */
|
|
de_emm_auth_resp_par, /* 9.9.3.4 Authentication response parameter */
|
|
de_emm_csfb_resp, /* 9.9.3.5 CSFB response */
|
|
NULL, /* 9.9.3.6 Daylight saving time (packet-gsm_a_dtap.c)*/
|
|
NULL, /* 9.9.3.7 Detach type */
|
|
NULL, /* 9.9.3.8 DRX parameter */
|
|
de_emm_cause, /* 9.9.3.9 EMM cause */
|
|
NULL, /* 9.9.3.10 EPS attach result (coded inline) */
|
|
NULL, /* 9.9.3.11 EPS attach type(Coded Inline) */
|
|
de_emm_eps_mid, /* 9.9.3.12 EPS mobile identity */
|
|
NULL, /* 9.9.3.13 EPS update result (Coded Inline)*/
|
|
NULL, /* 9.9.3.14 EPS update type (Inline)*/
|
|
de_emm_esm_msg_cont, /* 9.9.3.15 ESM message conta */
|
|
NULL, /* 9.9.3.16 GPRS timer ,See subclause 10.5.7.3 in 3GPP TS 24.008 [6]. (packet-gsm_a_gm.c)*/
|
|
NULL, /* 9.9.3.17 Identity type 2 ,See subclause 10.5.5.9 in 3GPP TS 24.008 [6]. */
|
|
NULL, /* 9.9.3.18 IMEISV request ,See subclause 10.5.5.10 in 3GPP TS 24.008 [6]. */
|
|
NULL, /* 9.9.3.19 KSI and sequence number */
|
|
NULL, /* 9.9.3.20 MS network capability ,See subclause 10.5.5.12 in 3GPP TS 24.008 [6].(packet-gsm_a_gm.c) */
|
|
NULL, /* 9.9.3.21 NAS key set identifier (Coded Inline) */
|
|
de_emm_nas_msg_cont, /* 9.9.3.22 NAS message container */
|
|
de_emm_nas_sec_alsgs, /* 9.9.3.23 NAS security algorithms */
|
|
NULL, /* 9.9.3.24 Network name, See subclause 10.5.3.5a in 3GPP TS 24.008 [6]. (packet-gsm_a_dtap.c)*/
|
|
de_emm_nonce, /* 9.9.3.25 Nonce */
|
|
NULL, /* 9.9.3.26 P-TMSI signature, See subclause 10.5.5.8 in 3GPP TS 24.008 [6]. (packet-gsm_a_gm.c)*/
|
|
NULL, /* 9.9.3.27 Service type */
|
|
de_emm_nas_short_mac, /* 9.9.3.28 Short MAC */
|
|
NULL, /* 9.9.3.29 Time zone, See subclause 10.5.3.8 in 3GPP TS 24.008 [6]. (packet-gsm_a_dtap.c)*/
|
|
NULL, /* 9.9.3.30 Time zone and time, See subclause 10.5.3.9 in 3GPP TS 24.008 [6]. (packet-gsm_a_dtap.c)*/
|
|
NULL, /* 9.9.3.31 TMSI status, See subclause 10.5.5.4 in 3GPP TS 24.008 [6]. (packet-gsm_a_gm.c)*/
|
|
de_emm_trac_area_id, /* 9.9.3.32 Tracking area identity */
|
|
de_emm_trac_area_id_lst, /* 9.9.3.33 Tracking area identity list */
|
|
de_emm_ue_net_cap, /* 9.9.3.34 UE network capability */
|
|
de_emm_ue_ra_cap_inf_upd_need, /* 9.9.3.35 UE radio capability information update needed */
|
|
de_emm_ue_sec_cap, /* 9.9.3.36 UE security capability */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
/* MESSAGE FUNCTIONS */
|
|
|
|
/*
|
|
* 8.2.1 Attach accept
|
|
*/
|
|
|
|
static void
|
|
nas_emm_attach_acc(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EPS attach result EPS attach result 9.9.3.10 M V 1/2 */
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_EPS_attach_result, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
/* Spare half octet Spare half octet 9.9.2.7 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_spare_half_octet, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* Fix up the lengths */
|
|
consumed = 1;/*Remove later */
|
|
curr_len--;
|
|
curr_offset++;
|
|
/* T3412 value GPRS timer 9.9.3.16 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER);
|
|
/* Tracking area identity list 9.9.3.33 M LV 7-97 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID_LST, " - TAI list");
|
|
/* ESM message container 9.9.3.15 M LV-E 2-n */
|
|
ELEM_MAND_LV_E(NAS_PDU_TYPE_EMM, DE_EMM_ESM_MSG_CONT, "");
|
|
/* 50 GUTI EPS mobile identity 9.9.3.12 O TLV 13 */
|
|
ELEM_OPT_TLV(0x50, NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, "GUTI");
|
|
/* 13 Location area identification Location area identification 9.9.2.2 O TV 6 */
|
|
ELEM_OPT_TV(0x13, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_LOC_AREA_ID, "Location area identification");
|
|
/* 23 MS identity Mobile identity 9.9.2.3 O TLV 7-10 */
|
|
ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_MOB_ID, "MS identity");
|
|
/* 53 EMM cause EMM cause 9.9.3.9 O TV 2 */
|
|
ELEM_OPT_TV(0x53, NAS_PDU_TYPE_EMM, DE_EMM_CAUSE, "");
|
|
/* 17 T3402 value GPRS timer 9.9.3.16 O TV 2 */
|
|
ELEM_OPT_TV(0x17, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, "T3402 value");
|
|
/* 59 T3423 value GPRS timer 9.9.3.16 O TV 2 */
|
|
ELEM_OPT_TV(0x59, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, "T3423 value");
|
|
/* 4A Equivalent PLMNs PLMN list 9.9.2.6 O TLV 5-47 */
|
|
ELEM_OPT_TLV(0x4a, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_PLM_LST, "Equivalent PLMNs");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
|
|
}
|
|
/*
|
|
* 8.2.2 Attach complete
|
|
*/
|
|
static void
|
|
nas_emm_attach_comp(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* ESM message container ESM message container 9.9.3.15 M LV-E 2-n */
|
|
ELEM_MAND_LV_E(NAS_PDU_TYPE_EMM, DE_EMM_ESM_MSG_CONT, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
|
|
}
|
|
|
|
/*
|
|
* 8.2.3 Attach reject
|
|
*/
|
|
static void
|
|
nas_emm_attach_rej(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* * EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
/* 78 ESM message container ESM message container 9.9.3.15 O TLV-E 4-n */
|
|
ELEM_OPT_TLV(0x78, NAS_PDU_TYPE_EMM, DE_EMM_ESM_MSG_CONT, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
|
|
}
|
|
/*
|
|
* 8.2.4 Attach request
|
|
*/
|
|
static void
|
|
nas_emm_attach_req(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EPS attach type EPS attach type 9.9.3.11 M V 1/2
|
|
* Inline:
|
|
*/
|
|
bit_offset = curr_offset<<3;
|
|
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_eps_att_type, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
/* NAS key set identifier NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
/* Old GUTI or IMSI EPS mobile identity 9.9.3.12 M LV 5-12 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, " - Old GUTI or IMSI");
|
|
/* UE network capability UE network capability 9.9.3.34 M LV 3-14 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_UE_NET_CAP, "");
|
|
/* ESM message container ESM message container 9.9.3.15 M LV-E 2-n */
|
|
ELEM_MAND_LV_E(NAS_PDU_TYPE_EMM, DE_EMM_ESM_MSG_CONT, "");
|
|
/* 52 Last visited registered TAI Tracking area identity 9.9.3.32 O TV 6 */
|
|
ELEM_OPT_TV(0x52, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, "Last visited registered TAI");
|
|
/* 5c DRX parameter DRX parameter 9.9.3.8 O TV 3 */
|
|
ELEM_OPT_TV(0x5c, GSM_A_PDU_TYPE_GM, DE_DRX_PARAM, "" );
|
|
/* 31 MS network capability MS network capability 9.9.3.20 M LV 3-9 */
|
|
ELEM_OPT_TLV( 0x31, GSM_A_PDU_TYPE_GM, DE_MS_NET_CAP , "" );
|
|
/* 13 Old location area identification Location area identification 9.9.2.2 O TV 6 */
|
|
ELEM_OPT_TV(0x13, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_LOC_AREA_ID, "Old location area identification");
|
|
/* 9- TMSI status TMSI status 9.9.3.31 O TV 1 */
|
|
ELEM_OPT_TV_SHORT( 0x90 , GSM_A_PDU_TYPE_GM, DE_TMSI_STAT , "" );
|
|
/* 11 Mobile station classmark 2 Mobile station classmark 2 9.9.2.5 O TLV 5 */
|
|
ELEM_OPT_TLV( 0x11, NAS_PDU_TYPE_COMMON, DE_EPS_MS_CM_2 , "" );
|
|
/* 20 Mobile station classmark 3 Mobile station classmark 3 9.9.2.5 O TLV 2-34 */
|
|
ELEM_OPT_TLV( 0x20, NAS_PDU_TYPE_COMMON, DE_EPS_MS_CM_3 , "" );
|
|
/* 40 Supported Codecs Supported Codec List 9.9.2.8 O TLV 5-n */
|
|
ELEM_OPT_TLV(0x40, GSM_A_PDU_TYPE_DTAP, DE_SUP_CODEC_LIST, " - Supported Codecs");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.5 Authentication failure
|
|
*/
|
|
static void
|
|
nas_emm_attach_fail(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
/* 30 Authentication failure parameter Authentication failure parameter 9.9.3.1 O TLV 1 */
|
|
ELEM_OPT_TLV(0x30, GSM_A_PDU_TYPE_DTAP, DE_AUTH_FAIL_PARAM, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.6 Authentication reject
|
|
* No IE:s
|
|
*/
|
|
/*
|
|
* 8.2.7 Authentication request
|
|
*/
|
|
|
|
static void
|
|
nas_emm_auth_req(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/*
|
|
* NAS key set identifierASME NAS key set identifier 9.9.3.21 M V 1/2
|
|
*/
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
|
|
/* Spare half octet Spare half octet 9.9.2.7 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_spare_half_octet, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
|
|
/*
|
|
* Authentication parameter RAND (EPS challenge) 9.9.3.3 M V 16
|
|
*/
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_DTAP, DE_AUTH_PARAM_RAND);
|
|
/*
|
|
* Authentication parameter AUTN (EPS challenge) 9.9.3.2 M LV 17
|
|
*/
|
|
ELEM_MAND_LV(GSM_A_PDU_TYPE_COMMON, DE_AUTH_PARAM_AUTN, " - EPS challenge");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
|
|
}
|
|
/*
|
|
* 8.2.8 Authentication response
|
|
*/
|
|
static void
|
|
nas_emm_auth_resp(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
/*
|
|
* Authentication response parameter 9.9.3.4 M LV 5-17
|
|
*/
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_AUTH_RESP_PAR, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.9 Detach accept
|
|
* 8.2.9.1 Detach accept (UE originating detach)
|
|
* No further IE's
|
|
* 8.2.9.2 Detach accept (UE terminated detach)
|
|
* No further IE's
|
|
*/
|
|
/*
|
|
* 8.2.10 Detach request
|
|
* 8.2.10.1 Detach request (UE originating detach)
|
|
* Detach type Detach type 9.9.3.6 M V 1/2
|
|
* Spare half octet Spare half octet 9.9.2.7 M V 1/2
|
|
* GUTI or IMSI EPS mobile identity 9.9.3.12 M LV 5-12
|
|
*ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, " - GUTI or IMSI");
|
|
*/
|
|
/*
|
|
* 8.2.10.2 Detach request (UE terminated detach)
|
|
* Detach type Detach type 9.9.3.6 M V 1/2
|
|
* Spare half octet Spare half octet 9.9.2.7 M V 1/2
|
|
* EMM cause EMM cause 9.9.3.9 O TV 2
|
|
* ELEM_OPT_TV(0x53, NAS_PDU_TYPE_EMM, DE_EMM_CAUSE, "");
|
|
*/
|
|
|
|
|
|
/*
|
|
* 8.2.11 Downlink NAS Transport
|
|
*/
|
|
static void
|
|
nas_emm_dl_nas_trans(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
/* NAS message container NAS message container 9.9.3.22 M LV 3-252 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_NAS_MSG_CONT, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.12 EMM information
|
|
*/
|
|
static void
|
|
nas_emm_emm_inf(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
|
|
/* 43 Full name for network Network name 9.9.3.24 O TLV 3-? */
|
|
ELEM_OPT_TLV(0x43, GSM_A_PDU_TYPE_DTAP, DE_NETWORK_NAME, " - Full name for network");
|
|
/* 45 Short name for network Network name 9.9.3.24 O TLV 3-? */
|
|
ELEM_OPT_TLV(0x45, GSM_A_PDU_TYPE_DTAP, DE_NETWORK_NAME, " - Short Name");
|
|
/* 46 Local time zone Time zone 9.9.3.29 O TV 2 */
|
|
ELEM_OPT_TV(0x46, GSM_A_PDU_TYPE_DTAP, DE_TIME_ZONE, " - Local");
|
|
/* 47 Universal time and local time zone Time zone and time 9.9.3.30 O TV 8 */
|
|
ELEM_OPT_TV(0x47, GSM_A_PDU_TYPE_DTAP, DE_TIME_ZONE_TIME, " - Universal Time and Local Time Zone");
|
|
/* 49 Network daylight saving time Daylight saving time 9.9.3.6 O TLV 3 */
|
|
ELEM_OPT_TLV(0x49, GSM_A_PDU_TYPE_DTAP, DE_DAY_SAVING_TIME, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* 8.2.13 EMM status
|
|
*/
|
|
static void
|
|
nas_emm_emm_status(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
|
|
/* EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
|
|
/*
|
|
* 8.2.14 Extended service request
|
|
*/
|
|
static void
|
|
nas_emm_ext_serv_req(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset,bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
|
|
|
|
/* Service type Service type 9.9.3.27 M V 1/2 Service type*/
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_service_type, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* NAS key set identifier NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
|
|
/* M-TMSI Mobile identity 9.9.2.3 M LV 6 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_COMMON, DE_EPS_CMN_MOB_ID, "M-TMSI");
|
|
/* B- CSFB response CSFB response 9.9.3.5 C TV 1 */
|
|
ELEM_OPT_TV_SHORT(0xb0, NAS_PDU_TYPE_EMM, DE_EMM_CSFB_RESP, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.15 GUTI reallocation command
|
|
*/
|
|
static void
|
|
nas_emm_guti_realloc_cmd(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = len;
|
|
|
|
/* GUTI EPS mobile identity 9.9.3.12 M LV 12 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, " - GUTI");
|
|
|
|
/* 54 TAI list Tracking area identity list 9.9.3.33 O TLV 8-98 */
|
|
ELEM_OPT_TLV(0x54, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID_LST, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
|
|
/*
|
|
* 8.2.16 GUTI reallocation complete
|
|
* No more IE's
|
|
*/
|
|
/*
|
|
* 8.2.17 Identity request
|
|
*/
|
|
|
|
static void
|
|
nas_emm_id_req(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
consumed = 1;
|
|
|
|
/* Identity type Identity type 2 9.9.3.17 M V 1/2 */
|
|
bit_offset=curr_offset<<3;
|
|
|
|
/* Spare half octet Spare half octet 9.9.2.7 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_spare_half_octet, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.18 Identity response
|
|
*/
|
|
static void
|
|
nas_emm_id_res(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* Mobile identity Mobile identity 9.9.2.3 M LV 4-10 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_COMMON, DE_EPS_CMN_MOB_ID, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
|
|
/*
|
|
* 8.2.19 NAS CS service notification
|
|
*/
|
|
|
|
/*
|
|
* 8.2.20 Security mode command
|
|
*/
|
|
static void
|
|
nas_emm_sec_mode_cmd(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
proto_item *item;
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* Selected NAS security algorithms NAS security algorithms 9.9.3.23 M V 1 */
|
|
ELEM_MAND_V(NAS_PDU_TYPE_EMM, DE_EMM_NAS_SEC_ALGS);
|
|
/* NAS key set identifierASME NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
item = proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
proto_item_append_text(item," - ASME");
|
|
bit_offset+=3;
|
|
/* NAS key set identifierSGSN NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
item = proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
proto_item_append_text(item," - SGSN");
|
|
bit_offset+=3;
|
|
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
|
|
/* Replayed UE security capabilities UE security capability 9.9.3.36 M LV 3-6 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_UE_SEC_CAP, " - Replayed UE security capabilities");
|
|
/* C- IMEISV request IMEISV request 9.9.3.18 O TV 1 */
|
|
ELEM_OPT_TV_SHORT( 0xC0 , GSM_A_PDU_TYPE_GM, DE_IMEISV_REQ , "" );
|
|
/* 55 Replayed NonceUE Nonce 9.9.3.25 O TV 5 */
|
|
ELEM_OPT_TV(0x55, GSM_A_PDU_TYPE_GM, DE_EMM_NONCE, " - Replayed NonceUE");
|
|
/* 56 NonceMME Nonce 9.9.3.25 O TV 5 */
|
|
ELEM_OPT_TV(0x55, GSM_A_PDU_TYPE_GM, DE_EMM_NONCE, " - NonceMME");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.21 Security mode complete
|
|
*/
|
|
static void
|
|
nas_emm_sec_mode_comp(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* 23 IMEISV Mobile identity 9.9.2.3 O TLV 11 DE_EPS_CMN_MOB_ID*/
|
|
ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_EMM, DE_EPS_CMN_MOB_ID, "IMEISV");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.22 Security mode reject
|
|
*/
|
|
static void
|
|
nas_emm_sec_mode_rej(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.23 Security protected NAS message
|
|
*/
|
|
#if 0
|
|
|
|
static void
|
|
nas_emm_sec_prot_msg(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
proto_item *item;
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* Message authentication code Message authentication code 9.5 M V 4 */
|
|
/* Sequence number Sequence number 9.6 M V 1 */
|
|
/* NAS message NAS message 9.7 M V 1-n */
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
#endif
|
|
/*
|
|
* 8.2.24 Service reject
|
|
*/
|
|
static void
|
|
nas_emm_serv_rej(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
|
|
/* 5B T3442 value GPRS timer 9.9.3.16 C TV 2 */
|
|
ELEM_OPT_TV(0x5b, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, " - T3442 value");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.25 Service request
|
|
* This message is sent by the UE to the network to request the establishment
|
|
* of a NAS signalling connection and of the radio and S1 bearers.
|
|
* Its structure does not follow the structure of a standard layer 3 message. See table 8.2.22.1.
|
|
* Protocol discriminator Protocol discriminator 9.2 M V 1/2
|
|
* Security header type Security header type 9.3.1 M V 1/2
|
|
* KSI and sequence number KSI and sequence number 9.9.3.17 M V 1
|
|
* Message authentication code (short) Short MAC 9.9.3.25 M V 2
|
|
*/
|
|
/*
|
|
* 8.2.26 Tracking area update accept
|
|
*/
|
|
static void
|
|
nas_emm_trac_area_upd_acc(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EPS update result EPS update result 9.9.3.13 M V 1/2 */
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_eps_update_result_value, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
/* Spare half octet Spare half octet 9.9.2.7 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_spare_half_octet, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
/* 5A T3412 value GPRS timer 9.9.3.16 O TV 2 */
|
|
ELEM_OPT_TV(0x5a, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, "T3412 value");
|
|
/* 50 GUTI EPS mobile identity 9.9.3.12 O TLV 13 */
|
|
ELEM_OPT_TLV(0x50, NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, "GUTI");
|
|
/* 54 TAI list Tracking area identity list 9.9.3.33 O TLV 8-98 */
|
|
ELEM_OPT_TLV(0x54, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID_LST, "");
|
|
/* 57 EPS bearer context status EPS bearer context status 9.9.2.1 O TLV 4 */
|
|
ELEM_OPT_TLV(0x57, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_EPS_BE_CTX_STATUS, "");
|
|
/* 13 Location area identification Location area identification 9.9.2.2 O TV 6 */
|
|
ELEM_OPT_TLV(0x13, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_LOC_AREA_ID, "");
|
|
/* 23 MS identity Mobile identity 9.9.2.3 O TLV 7-10 */
|
|
ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_MOB_ID, "MS identity");
|
|
/* 53 EMM cause EMM cause 9.9.3.9 O TV 2 */
|
|
ELEM_OPT_TV(0x53, NAS_PDU_TYPE_EMM, DE_EMM_CAUSE, "");
|
|
/* 17 T3402 value GPRS timer 9.9.3.16 O TV 2 */
|
|
ELEM_OPT_TV(0x17, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, "T3402 value");
|
|
/* 59 T3423 value GPRS timer 9.9.3.16 O TV 2 */
|
|
ELEM_OPT_TV(0x59, GSM_A_PDU_TYPE_GM, DE_GPRS_TIMER, "T3423 value");
|
|
/* 4A Equivalent PLMNs PLMN list 9.9.2.6 O TLV 5-47 */
|
|
ELEM_OPT_TLV(0x4a, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_PLM_LST, "Equivalent PLMNs");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.27 Tracking area update complete
|
|
* No more IE's
|
|
*/
|
|
/*
|
|
* 8.2.28 Tracking area update reject
|
|
*/
|
|
static void
|
|
nas_emm_trac_area_upd_rej(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EMM cause EMM cause 9.9.3.9 M V 1 */
|
|
ELEM_MAND_V(GSM_A_PDU_TYPE_GM, DE_EMM_CAUSE);
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.2.29 Tracking area update request
|
|
*/
|
|
static void
|
|
nas_emm_trac_area_upd_req(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
proto_item *item;
|
|
guint32 curr_offset, bit_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* EPS update type EPS update type 9.9.3.14 M V 1/2 */
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_active_flg, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_eps_update_type_value, tvb, bit_offset, 3, FALSE);
|
|
bit_offset+=3;
|
|
|
|
/* Spare half octet Spare half octet 9.9.2.7 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_emm_spare_half_octet, tvb, bit_offset, 4, FALSE);
|
|
bit_offset+=4;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
/* Old GUTI EPS mobile identity 9.9.3.12 M LV 12 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, " - Old GUTI");
|
|
/* NAS key set identifierASME NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
bit_offset = curr_offset<<3;
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
item = proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
proto_item_append_text(item," - ASME");
|
|
bit_offset+=3;
|
|
/* NAS key set identifierSGSN NAS key set identifier 9.9.3.21 M V 1/2 */
|
|
proto_tree_add_bits_item(tree, hf_nas_eps_spare_bits, tvb, bit_offset, 1, FALSE);
|
|
bit_offset++;
|
|
item = proto_tree_add_bits_item(tree, hf_nas_eps_emm_nas_key_set_id, tvb, bit_offset, 3, FALSE);
|
|
proto_item_append_text(item," - SGSN");
|
|
bit_offset+=3;
|
|
/* Fix up the lengths */
|
|
curr_len--;
|
|
curr_offset++;
|
|
/* 19 Old P-TMSI signature P-TMSI signature 9.9.3.26 O TV 4 */
|
|
ELEM_OPT_TV( 0x19 , GSM_A_PDU_TYPE_GM, DE_P_TMSI_SIG, " - Old P-TMSI Signature");
|
|
/* 50 Additional GUTI EPS mobile identity 9.9.3.12 O TLV 13 */
|
|
ELEM_OPT_TLV(0x50, NAS_PDU_TYPE_EMM, DE_EMM_EPS_MID, " - Additional GUTI");
|
|
/* 55 NonceUE Nonce 9.9.3.25 O TV 5 */
|
|
ELEM_OPT_TV(0x55, GSM_A_PDU_TYPE_GM, DE_EMM_NONCE, " - NonceUE");
|
|
/* 58 UE network capability UE network capability 9.9.3.34 O TLV 4-15 */
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_UE_NET_CAP, "");
|
|
/* 52 Last visited registered TAI Tracking area identity 9.9.3.32 O TV 6 */
|
|
ELEM_OPT_TV(0x52, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, "Last visited registered TAI");
|
|
/* 5C DRX parameter DRX parameter 9.9.3.8 O TV 3 */
|
|
ELEM_OPT_TV(0x5c, GSM_A_PDU_TYPE_GM, DE_DRX_PARAM, "" );
|
|
/* A- UE radio capability information update needed UE radio capability information update needed 9.9.3.35 O TV 1 */
|
|
ELEM_OPT_TV_SHORT( 0xA0 , NAS_PDU_TYPE_EMM, DE_EMM_UE_RA_CAP_INF_UPD_NEED , "" );
|
|
/* 57 EPS bearer context status EPS bearer context status 9.9.2.1 O TLV 4 */
|
|
ELEM_OPT_TLV(0x57, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_EPS_BE_CTX_STATUS, "");
|
|
/* 31 MS network capability MS network capability 9.9.3.20 O TLV 4-10 */
|
|
ELEM_OPT_TLV( 0x31 , GSM_A_PDU_TYPE_GM, DE_MS_NET_CAP , "" );
|
|
/* 13 Old location area identification Location area identification 9.9.2.2 O TV 6 */
|
|
ELEM_OPT_TV(0x13, NAS_PDU_TYPE_COMMON, DE_EPS_CMN_LOC_AREA_ID, "Old location area identification");
|
|
/* 9- TMSI status TMSI status 9.9.3.31 O TV 1 */
|
|
ELEM_OPT_TV_SHORT( 0x90 , GSM_A_PDU_TYPE_GM, DE_TMSI_STAT , "" );
|
|
/* 11 Mobile station classmark 2 Mobile station classmark 2 9.9.2.5 O TLV 5 */
|
|
ELEM_OPT_TLV( 0x11, NAS_PDU_TYPE_COMMON, DE_EPS_MS_CM_2 , "" );
|
|
/* 20 Mobile station classmark 3 Mobile station classmark 3 9.9.2.5 O TLV 2-34 */
|
|
ELEM_OPT_TLV( 0x20, NAS_PDU_TYPE_COMMON, DE_EPS_MS_CM_3 , "" );
|
|
/* 40 Supported Codecs Supported Codec List 9.9.2.8 O TLV 5-n */
|
|
ELEM_OPT_TLV(0x40, GSM_A_PDU_TYPE_DTAP, DE_SUP_CODEC_LIST, " - Supported Codecs");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
|
|
/*
|
|
* 8.2.30 Uplink NAS Transport
|
|
*/
|
|
static void
|
|
nas_emm_ul_nas_trans(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len)
|
|
{
|
|
guint32 curr_offset;
|
|
guint32 consumed;
|
|
guint curr_len;
|
|
|
|
curr_offset = offset;
|
|
curr_len = len;
|
|
|
|
/* NAS message container NAS message container 9.9.3.22 M LV 3-252*/
|
|
ELEM_MAND_LV(NAS_PDU_TYPE_EMM, DE_EMM_NAS_MSG_CONT, "");
|
|
|
|
EXTRANEOUS_DATA_CHECK(curr_len, 0);
|
|
}
|
|
/*
|
|
* 8.3 EPS session management messages
|
|
*/
|
|
/*
|
|
* 8.3.1 Activate dedicated EPS bearer context accept
|
|
* 27 Protocol configuration options Protocol configuration options 9.9.4.8 O TLV 3-253
|
|
*/
|
|
/*
|
|
* 8.3.2 Activate dedicated EPS bearer context reject
|
|
* ESM cause ESM cause 9.9.4.2 M V 1
|
|
* 27 Protocol configuration options Protocol configuration options 9.9.4.8 O TLV 3-253
|
|
*/
|
|
/*
|
|
* 8.3.3 Activate dedicated EPS bearer context request
|
|
Linked EPS bearer identity Linked EPS bearer identity
|
|
9.9.4.6 M V 1/2
|
|
Spare half octet Spare half octet
|
|
9.9.2.7 M V 1/2
|
|
EPS QoS EPS quality of service
|
|
9.9.4.3 M LV 2-10
|
|
TFT Traffic flow template
|
|
9.9.4.16 M LV 2-256
|
|
5D Transaction identifier Transaction identifier
|
|
9.9.4.17 O TLV 3-4
|
|
30 Negotiated QoS Quality of service
|
|
9.9.4.12 O TLV 14-18
|
|
32 Negotiated LLC SAPI LLC service access point identifier
|
|
9.9.4.7 O TV 2
|
|
8- Radio priority Radio priority
|
|
9.9.4.13 O TV 1
|
|
34 Packet flow Identifier Packet flow Identifier
|
|
9.9.4.8 O TLV 3
|
|
27 Protocol configuration options Protocol configuration options
|
|
9.9.4.11 O TLV 3-253
|
|
|
|
*/
|
|
/*
|
|
* 8.3.3 Activate dedicated EPS bearer context requ
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* 8.3.4 Activate default EPS bearer context accept
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#define NUM_NAS_MSG_EMM (sizeof(nas_msg_emm_strings)/sizeof(value_string))
|
|
static gint ett_nas_msg_emm[NUM_NAS_MSG_EMM];
|
|
static void (*nas_msg_emm_fcn[])(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len) = {
|
|
nas_emm_attach_req, /* Attach request */
|
|
nas_emm_attach_acc, /* Attach accept */
|
|
nas_emm_attach_comp, /* Attach complete */
|
|
nas_emm_attach_rej, /* Attach reject */
|
|
NULL, /* Detach request */
|
|
NULL, /* Detach accept */
|
|
|
|
nas_emm_trac_area_upd_req, /* Tracking area update request */
|
|
nas_emm_trac_area_upd_acc, /* Tracking area update accept */
|
|
NULL, /* Tracking area update complete (No IE's)*/
|
|
nas_emm_trac_area_upd_rej, /* Tracking area update reject */
|
|
|
|
nas_emm_ext_serv_req, /* Extended service request */
|
|
nas_emm_serv_rej, /* Service reject */
|
|
|
|
nas_emm_guti_realloc_cmd, /* GUTI reallocation command */
|
|
NULL, /* GUTI reallocation complete (No IE's) */
|
|
nas_emm_auth_req, /* Authentication request */
|
|
nas_emm_auth_resp, /* Authentication response */
|
|
NULL, /* Authentication reject (No IE:s)*/
|
|
nas_emm_attach_fail, /* Authentication failure */
|
|
nas_emm_id_req, /* Identity request */
|
|
nas_emm_id_res, /* Identity response */
|
|
/* NULL, 8.2.19 NAS CS service notification */
|
|
nas_emm_sec_mode_cmd, /* Security mode command */
|
|
nas_emm_sec_mode_comp, /* Security mode complete */
|
|
nas_emm_sec_mode_rej, /* Security mode reject */
|
|
|
|
nas_emm_emm_status, /* EMM status */
|
|
nas_emm_emm_inf, /* EMM information */
|
|
nas_emm_dl_nas_trans, /* Downlink NAS transport */
|
|
nas_emm_ul_nas_trans, /* Uplink NAS transport */
|
|
NULL, /* NONE */
|
|
|
|
};
|
|
|
|
void get_nas_emm_msg_params(guint8 oct, const gchar **msg_str, int *ett_tree, int *hf_idx, msg_fcn *msg_fcn)
|
|
{
|
|
gint idx;
|
|
|
|
*msg_str = match_strval_idx((guint32) (oct & 0xff), nas_msg_emm_strings, &idx);
|
|
*ett_tree = ett_nas_msg_emm[idx];
|
|
*hf_idx = hf_nas_eps_msg_emm_type;
|
|
*msg_fcn = nas_msg_emm_fcn[idx];
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dissect_nas_eps(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *nas_eps_tree;
|
|
const gchar *msg_str;
|
|
guint32 len;
|
|
gint ett_tree;
|
|
int hf_idx;
|
|
void (*msg_fcn)(tvbuff_t *tvb, proto_tree *tree, guint32 offset, guint len);
|
|
guint8 security_header_type, pd, oct;
|
|
int offset = 0;
|
|
|
|
/* make entry in the Protocol column on summary display */
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NAS-EPS");
|
|
|
|
len = tvb_length(tvb);
|
|
|
|
item = proto_tree_add_item(tree, proto_nas_eps, tvb, 0, -1, FALSE);
|
|
nas_eps_tree = proto_item_add_subtree(item, ett_nas_eps);
|
|
/* 9.3.1 Security header type */
|
|
security_header_type = tvb_get_guint8(tvb,offset)>>4;
|
|
proto_tree_add_item(nas_eps_tree, hf_nas_eps_security_header_type, tvb, 0, 1, FALSE);
|
|
if (security_header_type !=0)
|
|
/* XXX Add further decoding here? */
|
|
return;
|
|
pd = tvb_get_guint8(tvb,offset)&0x0f;
|
|
proto_tree_add_item(nas_eps_tree, hf_gsm_a_L3_protocol_discriminator, tvb, 0, 1, FALSE);
|
|
offset++;
|
|
/*messge type IE*/
|
|
oct = tvb_get_guint8(tvb,offset);
|
|
msg_fcn = NULL;
|
|
ett_tree = -1;
|
|
hf_idx = -1;
|
|
msg_str = NULL;
|
|
|
|
/* Debug
|
|
* proto_tree_add_text(nas_eps_tree, tvb, offset, 1,"Pd %u MSG %u", pd,oct);
|
|
*/
|
|
|
|
switch (pd){
|
|
case 8:
|
|
get_nas_emm_msg_params(oct, &msg_str, &ett_tree, &hf_idx, &msg_fcn);
|
|
break;
|
|
default:
|
|
proto_tree_add_text(nas_eps_tree, tvb, offset, len - offset, "PD not decoded yet");
|
|
return;
|
|
break;
|
|
}
|
|
|
|
if(msg_str){
|
|
if (check_col(pinfo->cinfo, COL_INFO)){
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s ", msg_str);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add NAS message name
|
|
*/
|
|
proto_tree_add_item(nas_eps_tree, hf_idx, tvb, offset, 1, FALSE);
|
|
offset++;
|
|
|
|
|
|
/*
|
|
* decode elements
|
|
*/
|
|
if (msg_fcn == NULL)
|
|
{
|
|
proto_tree_add_text(nas_eps_tree, tvb, offset, len - offset,
|
|
"Message Elements");
|
|
}
|
|
else
|
|
{
|
|
(*msg_fcn)(tvb, nas_eps_tree, offset, len - offset);
|
|
}
|
|
|
|
}
|
|
|
|
void proto_register_nas_eps(void) {
|
|
guint i;
|
|
guint last_offset;
|
|
|
|
/* List of fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_nas_eps_msg_emm_type,
|
|
{ "NAS EPS Mobility Management Message Type", "nas_eps.nas_msg_epsmm_type",
|
|
FT_UINT8, BASE_HEX, VALS(nas_msg_emm_strings), 0x0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_nas_eps_common_elem_id,
|
|
{ "Element ID", "nas_eps.common.elem_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_nas_emm_elem_id,
|
|
{ "Element ID", "nas_eps.emm.elem_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_nas_eps_spare_bits,
|
|
{ "Spare bit(s)", "nas_eps.spare_bits",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Spare bit(s)", HFILL }
|
|
},
|
|
{ &hf_nas_eps_security_header_type,
|
|
{ "Security header type","nas_eps.security_header_type",
|
|
FT_UINT8,BASE_DEC, VALS(security_header_type_vals), 0xf0,
|
|
"Security_header_type", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_eps_att_type,
|
|
{ "EPS attach type","nas_eps.emm.eps_att_type",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_eps_att_type_vals), 0x0,
|
|
"EPS attach type", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_nas_key_set_id,
|
|
{ "NAS key set identifier","nas_eps.emm.nas_key_set_id",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_NAS_key_set_identifier_vals), 0x0,
|
|
"NAS key set identifier", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_odd_even,
|
|
{ "odd/even indic","nas_eps.emm.odd_even",
|
|
FT_UINT8,BASE_DEC, NULL, 0x8,
|
|
"odd/even indic", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_type_of_id,
|
|
{ "Type of identity","nas_eps.emm.type_of_id",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_type_of_id_vals), 0x07,
|
|
"Type of identity", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_EPS_attach_result,
|
|
{ "Type of identity","nas_eps.emm.EPS_attach_result",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_EPS_attach_result_values), 0x0,
|
|
"Type of identity", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_spare_half_octet,
|
|
{ "Spare half octet","nas_eps.emm.EPS_attach_result",
|
|
FT_UINT8,BASE_DEC, NULL, 0x0,
|
|
"Spare half octet", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_res,
|
|
{ "RES","nas_eps.emm.res",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"RES", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_cause,
|
|
{ "Cause","nas_eps.emm.cause",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_cause_values), 0x0,
|
|
"Cause", HFILL }
|
|
},
|
|
{ &hf_nas_eps_emm_short_mac,
|
|
{ "Short MAC value","nas_eps.emm.short_mac",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Short MAC value", HFILL }
|
|
},
|
|
{ &hf_nas_eps_active_flg,
|
|
{ "Active flag", "nas_eps.emm.active_flg",
|
|
FT_BOOLEAN, 8, TFS(&nas_eps_emm_active_flg_value), 0x0,
|
|
"Active flag", HFILL }
|
|
},
|
|
{ &hf_nas_eps_eps_update_result_value,
|
|
{ "EPS update result value","nas_eps.emm.eps_update_result_value",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_eps_update_result_vals), 0x0,
|
|
"EPS update result value", HFILL }
|
|
},
|
|
{ &hf_nas_eps_eps_update_type_value,
|
|
{ "EPS update type value", "nas_eps.emm.update_type_value",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_emm_eps_update_type_vals), 0x0,
|
|
"EPS update type value", HFILL }
|
|
},
|
|
{ &hf_nas_eps_service_type,
|
|
{ "Service type", "nas_eps.emm.service_type",
|
|
FT_UINT8,BASE_DEC, VALS(nas_eps_service_type_vals), 0x0,
|
|
"Service type", HFILL }
|
|
},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
#define NUM_INDIVIDUAL_ELEMS 1
|
|
static gint *ett[NUM_INDIVIDUAL_ELEMS +
|
|
NUM_NAS_EPS_COMMON_ELEM +
|
|
NUM_NAS_MSG_EMM + NUM_NAS_EMM_ELEM];
|
|
|
|
ett[0] = &ett_nas_eps;
|
|
|
|
last_offset = NUM_INDIVIDUAL_ELEMS;
|
|
|
|
for (i=0; i < NUM_NAS_EPS_COMMON_ELEM; i++, last_offset++)
|
|
{
|
|
ett_nas_eps_common_elem[i] = -1;
|
|
ett[last_offset] = &ett_nas_eps_common_elem[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_NAS_MSG_EMM; i++, last_offset++)
|
|
{
|
|
ett_nas_msg_emm[i] = -1;
|
|
ett[last_offset] = &ett_nas_msg_emm[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_NAS_EMM_ELEM; i++, last_offset++)
|
|
{
|
|
ett_gsm_gm_elem[i] = -1;
|
|
ett[last_offset] = &ett_gsm_gm_elem[i];
|
|
}
|
|
|
|
/* Register protocol */
|
|
proto_nas_eps = proto_register_protocol(PNAME, PSNAME, PFNAME);
|
|
/* Register fields and subtrees */
|
|
proto_register_field_array(proto_nas_eps, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register dissector */
|
|
register_dissector(PFNAME, dissect_nas_eps, proto_nas_eps);
|
|
}
|