forked from osmocom/wireshark
DECT-NWK: Initial dissector for DECT NWK layer
Change-Id: Idf0b97ce40ec5b2dd1b507a72fed64cfee288354
This commit is contained in:
Alexis La Goutte
parent
318b5a819d
commit
1be5ec9433
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@ -974,6 +974,7 @@ set(DISSECTOR_SRC
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dect-dlc.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dect-mitel-eth.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dect-mitel-rfp.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dect-nwk.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-devicenet.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dhcp.c
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${CMAKE_CURRENT_SOURCE_DIR}/packet-dhcp-failover.c
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@ -0,0 +1,335 @@
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/* packet-dect_nwk.c
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*
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* Dissector for the DECT (Digital Enhanced Cordless Telecommunications)
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* NWK protocol layer as described in ETSI EN 300 175-5 V2.7.1 (2017-11)
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*
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* Copyright 2018 by Harald Welte <laforge@gnumonks.org>
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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static int proto_dect_nwk = -1;
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static gint hf_nwk_ti = -1;
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static gint hf_nwk_pdisc = -1;
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static gint hf_nwk_msg_type_lce = -1;
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static gint hf_nwk_msg_type_cc = -1;
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static gint hf_nwk_msg_type_mm = -1;
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static gint ett_dect_nwk = -1;
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static dissector_handle_t dect_nwk_handle;
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/*********************************************************************************
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* DECT DEFINITIONS
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*********************************************************************************/
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/* Section 7.2 */
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enum dect_nwk_proto_disc {
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DECT_NWK_PDISC_LCE = 0x0,
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DECT_NWK_PDISC_CC = 0x3,
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DECT_NWK_PDISC_CISS = 0x4,
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DECT_NWK_PDISC_MM = 0x5,
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DECT_NWK_PDISC_CMSS = 0x6,
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DECT_NWK_PDISC_COMS = 0x7,
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};
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/* Section 7.4.1 */
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enum dect_nwk_cc_msg_type {
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DECT_NWK_CC_ALERTING = 0x01,
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DECT_NWK_CC_CALL_PROC = 0x02,
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DECT_NWK_CC_SETUP = 0x05,
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DECT_NWK_CC_CONNECT = 0x07,
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DECT_NWK_CC_SETUP_ACK = 0x0d,
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DECT_NWK_CC_CONNECT_ACK = 0x0f,
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DECT_NWK_CC_SERVICE_CHANGE = 0x20,
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DECT_NWK_CC_SERVICE_ACCEPT = 0x21,
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DECT_NWK_CC_SERVICE_REJECT = 0x23,
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DECT_NWK_CC_RELEASE = 0x4d,
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DECT_NWK_CC_RELEASE_COM = 0x5a,
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DECT_NWK_CC_IWU_INFO = 0x60,
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DECT_NWK_CC_NOTIFY = 0x6e,
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DECT_NWK_CC_INFO = 0x7b,
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};
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/* Section 7.4.2 */
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enum dect_nwk_ss_msg_type {
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DECT_NWK_SS_CISS_RELEASE_COM = 0x5a,
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DECT_NWK_SS_CISS_FACILITY = 0x62,
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DECT_NWK_SS_CISS_REGISTER = 0x64,
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DECT_NWK_SS_CRSS_HOLD = 0x24,
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DECT_NWK_SS_CRSS_HOLD_ACK = 0x28,
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DECT_NWK_SS_CRSS_HOLD_REJ = 0x30,
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DECT_NWK_SS_CRSS_RETRIEVE = 0x31,
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DECT_NWK_SS_CRSS_RETRIEVE_ACK = 0x33,
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DECT_NWK_SS_CRSS_RETRIEVE_REJ = 0x37,
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#define DECT_NWK_SS_CRSS_FACILITY DECT_NWK_SS_CISS_FACILITY
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};
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/* Section 7.4.3 */
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enum dect_nwk_coms_msg_type {
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DECT_NWK_COMS_SETUP = 0x05,
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DECT_NWK_COMS_CONNECT = 0x07,
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DECT_NWK_COMS_NOTIFY = 0x08,
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DECT_NWK_COMS_RELEASE = 0x4d,
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DECT_NWK_COMS_RELEASE_COM = 0x5a,
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DECT_NWK_COMS_INFO = 0x7b,
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DECT_NWK_COMS_ACK = 0x78,
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};
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/* Section 7.4.4 */
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enum dect_nwk_clms_msg_type {
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DECT_NWK_CLMS_VARIABLE = 0x01,
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};
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/* Section 7.4.5 */
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enum dect_nwk_mm_msg_type {
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DECT_NWK_MM_AUTH_REQ = 0x40,
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DECT_NWK_MM_AUTH_REPLY = 0x41,
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DECT_NWK_MM_KEY_ALLOC = 0x42,
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DECT_NWK_MM_AUTH_REJ = 0x43,
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DECT_NWK_MM_ACC_RIGHTS_REQ = 0x44,
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DECT_NWK_MM_ACC_RIGHTS_ACK = 0x45,
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DECT_NWK_MM_ACC_RIGHTS_REJ = 0x47,
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DECT_NWK_MM_ACC_RIGHTS_TERM_REQ = 0x48,
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DECT_NWK_MM_ACC_RIGHTS_TERM_ACK = 0x49,
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DECT_NWK_MM_ACC_RIGHTS_TERM_REJ = 0x4b,
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DECT_NWK_MM_CIPH_REQ = 0x4c,
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DECT_NWK_MM_CIPH_SUGGEST = 0x4e,
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DECT_NWK_MM_CIPH_REJ = 0x4f,
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DECT_NWK_MM_INFO_REQ = 0x50,
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DECT_NWK_MM_INFO_ACK = 0x51,
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DECT_NWK_MM_INFO_SUGGEST = 0x52,
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DECT_NWK_MM_INFO_REJ = 0x53,
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DECT_NWK_MM_LOCATE_REQ = 0x54,
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DECT_NWK_MM_LOCATE_ACK = 0x55,
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DECT_NWK_MM_DETACH = 0x56,
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DECT_NWK_MM_LOCATE_REJ = 0x57,
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DECT_NWK_MM_ID_REQ = 0x58,
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DECT_NWK_MM_ID_REPLY = 0x59,
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DECT_NWK_MM_IWU = 0x5b,
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DECT_NWK_MM_TID_ASSIGN = 0x5c,
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DECT_NWK_MM_TID_ASSIGN_ACK = 0x5d,
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DECT_NWK_MM_TID_ASSIGN_REJ = 0x5f,
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DECT_NWK_MM_NOTIFY = 0x6e,
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};
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/* Section 7.4.6 */
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enum dect_nwk_lce_msg_type {
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DECT_NWK_LCE_PAGE_RESP = 0x71,
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DECT_NWK_LCE_PAGE_REJ = 0x72,
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};
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/*********************************************************************************
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* DECT VALUE STRINGS
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*********************************************************************************/
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/* Section 7.2 */
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static const value_string nwk_pdisc_vals[] = {
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{ DECT_NWK_PDISC_LCE, "Link Control Entity (LCE)" },
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{ DECT_NWK_PDISC_CC, "Call Control (CC)" },
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{ DECT_NWK_PDISC_CISS, "Call Independent Supplementary Services (CISS)" },
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{ DECT_NWK_PDISC_MM, "Mobility Management (MM)" },
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{ DECT_NWK_PDISC_CMSS, "ConnectionLess Message Service (CMSS)" },
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{ DECT_NWK_PDISC_COMS, "Connection Oriented Message Service (COMS)" },
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{ 0, NULL }
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};
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/* Section 7.4.1 */
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static const value_string nwk_cc_msgt_vals[] = {
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{ DECT_NWK_CC_ALERTING, "CC-ALERTING" },
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{ DECT_NWK_CC_CALL_PROC, "CC-CALL-PROC" },
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{ DECT_NWK_CC_SETUP, "CC-SETUP" },
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{ DECT_NWK_CC_CONNECT, "CC-CONNECT" },
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{ DECT_NWK_CC_SETUP_ACK, "CC-SETUP-ACK" },
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{ DECT_NWK_CC_CONNECT_ACK, "CC-CONNECT-ACK" },
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{ DECT_NWK_CC_SERVICE_CHANGE, "CC-SERVICE-CHANGE" },
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{ DECT_NWK_CC_SERVICE_ACCEPT, "CC-SERVICE-ACCEPT" },
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{ DECT_NWK_CC_SERVICE_REJECT, "CC-SERVICE-REJECT" },
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{ DECT_NWK_CC_RELEASE, "CC-RELEASE" },
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{ DECT_NWK_CC_RELEASE_COM, "CC-RELEASE-COM" },
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{ DECT_NWK_CC_IWU_INFO, "CC-IWU-INFO" },
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{ DECT_NWK_CC_NOTIFY, "CC-NOTIFY" },
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{ DECT_NWK_CC_INFO, "CC-INFO" },
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{ 0, NULL }
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};
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/* Section 7.4.5 */
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static const value_string nwk_mm_msgt_vals[] = {
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{ DECT_NWK_MM_AUTH_REQ, "MM-AUTH-REQ" },
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{ DECT_NWK_MM_AUTH_REPLY, "MM-AUTH-REPLY" },
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/* FIXME: all other MM messages */
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{ 0, NULL }
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};
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/* Section 7.4.6 */
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static const value_string nwk_lce_msgt_vals[] = {
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{ DECT_NWK_LCE_PAGE_RESP, "LCE-PAGE-RESPONSE" },
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{ DECT_NWK_LCE_PAGE_REJ, "LCE-PAGE-REJECT" },
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{ 0, NULL }
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};
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/* TOOD: value_string for other protocols */
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/*********************************************************************************
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* DECT dissector code
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*********************************************************************************/
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static int dissect_dect_nwk_lce(tvbuff_t *tvb, guint8 msg_type, guint offset, packet_info *pinfo, proto_tree *tree, void _U_ *data)
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{
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proto_tree_add_item(tree, hf_nwk_msg_type_lce, tvb, offset, 1, ENC_NA);
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s ",
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val_to_str(msg_type, nwk_lce_msgt_vals, "Unknown 0x%02x"));
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offset++;
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/* TOOD: dissection of TLVs/IEs */
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return offset;
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}
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static int dissect_dect_nwk_cc(tvbuff_t *tvb, guint8 msg_type, guint offset, packet_info *pinfo, proto_tree *tree, void _U_ *data)
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{
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proto_tree_add_item(tree, hf_nwk_msg_type_cc, tvb, offset, 1, ENC_NA);
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s ",
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val_to_str(msg_type, nwk_cc_msgt_vals, "Unknown 0x%02x"));
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offset++;
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/* TOOD: dissection of TLVs/IEs */
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return offset;
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}
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static int dissect_dect_nwk_mm(tvbuff_t *tvb, guint8 msg_type, guint offset, packet_info *pinfo, proto_tree *tree, void _U_ *data)
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{
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proto_tree_add_item(tree, hf_nwk_msg_type_mm, tvb, offset, 1, ENC_NA);
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s ",
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val_to_str(msg_type, nwk_mm_msgt_vals, "Unknown 0x%02x"));
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offset++;
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/* TOOD: dissection of TLVs/IEs */
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return offset;
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}
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static int dissect_dect_nwk(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
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{
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proto_tree *nwk_tree;
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proto_item *nwk_ti;
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guint8 pdisc, msg_type;
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guint len;
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guint offset = 0;
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int available_length;
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len = tvb_reported_length(tvb);
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col_append_str(pinfo->cinfo, COL_INFO, "(NWK) ");
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nwk_ti = proto_tree_add_item(tree, proto_dect_nwk, tvb, 0, len, ENC_NA);
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nwk_tree = proto_item_add_subtree(nwk_ti, ett_dect_nwk);
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proto_tree_add_item(nwk_tree, hf_nwk_ti, tvb, 0, 1, ENC_NA);
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proto_tree_add_item(nwk_tree, hf_nwk_pdisc, tvb, 0, 1, ENC_NA);
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pdisc = tvb_get_guint8(tvb, 0) & 0x0F;
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msg_type = tvb_get_guint8(tvb, 1);
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switch (pdisc) {
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case DECT_NWK_PDISC_LCE:
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offset = dissect_dect_nwk_lce(tvb, msg_type, 1, pinfo, nwk_tree, data);
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break;
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case DECT_NWK_PDISC_CC:
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offset = dissect_dect_nwk_cc(tvb, msg_type, 1, pinfo, nwk_tree, data);
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break;
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case DECT_NWK_PDISC_MM:
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offset = dissect_dect_nwk_mm(tvb, msg_type, 1, pinfo, nwk_tree, data);
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break;
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case DECT_NWK_PDISC_CISS:
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case DECT_NWK_PDISC_CMSS:
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case DECT_NWK_PDISC_COMS:
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/* FIXME */
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default:
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break;
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}
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/* whatever was not dissected: Use generic data dissector */
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available_length = tvb_captured_length(tvb) - offset;
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if (available_length) {
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tvbuff_t *payload = tvb_new_subset_length_caplen(tvb, offset, MIN(len-offset, available_length), len);
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call_data_dissector(payload, pinfo, tree);
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}
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return tvb_captured_length(tvb);
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}
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void proto_register_dect_nwk(void)
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{
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static hf_register_info hf[] =
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{
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{ &hf_nwk_ti,
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{ "Transaction Identifier", "dect_nwk.ti", FT_UINT8, BASE_HEX,
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NULL, 0xF0, NULL, HFILL
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}
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},
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{ &hf_nwk_pdisc,
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{ "Proticol Discriminator", "dect_nwk.pdisc", FT_UINT8, BASE_HEX,
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VALS(nwk_pdisc_vals), 0x0F, NULL, HFILL
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}
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},
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{ &hf_nwk_msg_type_cc,
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{ "Message Type", "dect_nwk.msg_type", FT_UINT8, BASE_HEX,
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VALS(nwk_cc_msgt_vals), 0x0, NULL, HFILL
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}
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},
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{ &hf_nwk_msg_type_mm,
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{ "Message Type", "dect_nwk.msg_type", FT_UINT8, BASE_HEX,
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VALS(nwk_mm_msgt_vals), 0x0, NULL, HFILL
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}
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},
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{ &hf_nwk_msg_type_lce,
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{ "Message Type", "dect_nwk.msg_type", FT_UINT8, BASE_HEX,
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VALS(nwk_lce_msgt_vals), 0x0, NULL, HFILL
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}
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},
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};
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static gint *ett[] = {
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&ett_dect_nwk,
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};
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/* Register protocol */
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proto_dect_nwk = proto_register_protocol("DECT NWK", "DECT-NWK", "dect_nwk");
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proto_register_subtree_array(ett, array_length(ett));
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proto_register_field_array(proto_dect_nwk, hf, array_length(hf));
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dect_nwk_handle = register_dissector("dect_nwk", dissect_dect_nwk, proto_dect_nwk);
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}
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void proto_reg_handoff_dect_nwk(void)
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{
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dissector_add_uint("dect_dlc.sapi", 0, dect_nwk_handle);
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dissector_add_uint("dect_dlc.sapi", 3, dect_nwk_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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