376 lines
11 KiB
C
376 lines
11 KiB
C
/* packet-gmr1_common.c
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*
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* Routines for GMR-1 dissection in wireshark (common stuff).
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* Copyright (c) 2011 Sylvain Munaut <tnt@246tNt.com>
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*
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* References:
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* [1] ETSI TS 101 376-4-8 V1.3.1 - GMR-1 04.008
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* [2] ETSI TS 101 376-4-8 V2.2.1 - GMPRS-1 04.008
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* [3] ETSI TS 101 376-4-8 V3.1.1 - GMR-1 3G 44.008
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* [4] ETSI TS 100 940 V7.21.0 - GSM 04.08
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* [5] ETSI TS 101 376-4-12 V3.2.1 - GMR-1 3G 44.060
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* [6] ETSI TS 101 376-5-6 V1.3.1 - GMR-1 05.008
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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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#include "packet-gmr1_common.h"
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#include "packet-gmr1_rr.h"
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void proto_register_gmr1_common(void);
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/* GMR-1 Common proto */
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static int proto_gmr1_common = -1;
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/* ------------------------------------------------------------------------ */
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/* Protocol descriptor (see [1] 11.2 & [4] 10.2) */
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/* ------------------------------------------------------------------------ */
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const value_string gmr1_pd_vals[] = {
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{ GMR1_PD_CC, "Call Control; call related SS messages" },
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{ GMR1_PD_MM, "Mobility Management messages" },
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{ GMR1_PD_RR, "Radio Resource management messages" },
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{ GMR1_PD_GMM, "GPRS Mobility Management messages" },
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{ GMR1_PD_SM, "Session Management messages" },
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{ GMR1_PD_DTRS, "DTMF transmission and reception service" },
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{ 0, NULL }
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};
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const value_string gmr1_pd_short_vals[] = {
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{ GMR1_PD_CC, "CC" }, /* Call Control; call related SS messages */
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{ GMR1_PD_MM, "MM" }, /* Mobility Management messages */
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{ GMR1_PD_RR, "RR" }, /* Radio Resource management messages */
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{ GMR1_PD_GMM, "GMM" }, /* GPRS Mobility Management messages */
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{ GMR1_PD_SM, "SM" }, /* Session Management messages */
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{ GMR1_PD_DTRS, "DTRS" }, /* DTMF transmission and reception service */
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{ 0, NULL}
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};
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/* ------------------------------------------------------------------------ */
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/* Common Information Elements */
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/* ------------------------------------------------------------------------ */
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static const value_string gmr1_ie_common_strings[] = {
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{ GMR1_IE_COM_CM2,
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"Mobile Earth Station Classmark 2" }, /* [1] 11.5.1.6 */
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{ GMR1_IE_COM_SPARE_NIBBLE,
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"Spare Half Octet" }, /* [1] 11.5.1.8 */
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{ 0, NULL}
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};
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value_string_ext gmr1_ie_common_strings_ext = VALUE_STRING_EXT_INIT(gmr1_ie_common_strings);
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gint ett_gmr1_ie_common[NUM_GMR1_IE_COMMON];
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/* Fields */
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int hf_gmr1_skip_ind = -1;
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int hf_gmr1_l3_pd = -1;
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int hf_gmr1_elem_id = -1;
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int hf_gmr1_len = -1;
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static int hf_com_cm2_spare1 = -1;
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static int hf_com_cm2_revision = -1;
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static int hf_com_cm2_early_send = -1;
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static int hf_com_cm2_a5_1 = -1;
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static int hf_com_cm2_mes_type = -1;
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static int hf_com_cm2_spare2 = -1;
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static int hf_com_cm2_ss_screen_ind = -1;
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static int hf_com_cm2_sms_cap = -1;
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static int hf_com_cm2_spare3 = -1;
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static int hf_com_cm2_freq_cap = -1;
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static int hf_com_cm2_cm3_presence = -1;
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static int hf_com_cm2_spare4 = -1;
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static int hf_com_cm2_a5_3 = -1;
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static int hf_com_cm2_a5_2_gmr1 = -1;
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static int hf_com_spare_nibble = -1;
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/* [1] 11.5.1.6 - Mobile Earth Station Classmark 2 */
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static const value_string com_cm2_revision_vals[] = {
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{ 0, "Reserved for Phase 1" },
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{ 1, "Phase 2 MESs" },
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{ 2, "Reserved" },
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{ 3, "Reserved" },
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{ 0, NULL }
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};
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static const value_string com_cm2_early_send_vals[] = {
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{ 0, "\"Controlled Early Classmark Sending\" option is not implemented" },
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{ 1, "\"Controlled Early Classmark Sending\" option is implemented" },
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{ 0, NULL }
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};
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static const value_string com_cm2_a5_1_vals[] = {
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{ 0, "Encryption algorithm A5/1 available" },
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{ 1, "Encryption algorithm A5/1 not available" },
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{ 0, NULL }
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};
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static const value_string com_cm2_mes_type_vals[] = {
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{ 0, "Class 1 Reserved" },
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{ 1, "Class 2 Used by all fixed GMR-1 terminals" },
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{ 2, "Class 3 Used by all vehicular GMR-1 terminals" },
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{ 3, "Class 4 Used by all handheld GMR-1 terminals" },
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{ 0, NULL }
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};
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static const value_string com_cm2_ss_screen_ind_vals[] = {
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{ 0, "Defined in GSM 04.80 [29]" },
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{ 1, "Defined in GSM 04.80 [29]" },
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{ 2, "Defined in GSM 04.80 [29]" },
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{ 3, "Defined in GSM 04.80 [29]" },
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{ 0, NULL }
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};
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static const value_string com_cm2_sms_cap_vals[] = {
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{ 0, "MES does not support mobile terminated point-to-point SMS" },
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{ 1, "MES supports mobile terminated point-to-point SMS" },
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{ 0, NULL }
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};
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static const value_string com_cm2_freq_cap_vals[] = {
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{ 0, "Not used in GMR-1" },
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{ 1, "Not used in GMR-1" },
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{ 0, NULL }
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};
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static const value_string com_cm3_presence_vals[] = {
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{ 0, "No additional MES capability information available" },
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{ 1, "Additional MES capabilities are described in the Classmark 3 IE" },
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{ 0, NULL }
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};
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static const value_string com_cm2_a5_3_vals[] = {
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{ 0, "Encryption algorithm A5/3 not available" },
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{ 1, "Encryption algorithm A5/3 available" },
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{ 0, NULL }
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};
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static const value_string com_cm2_a5_2_gmr1_vals[] = {
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{ 0, "Encryption algorithm GMR-1 A5/2 not available" },
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{ 1, "Encryption algorithm GMR-1 A5/2 available" },
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{ 0, NULL }
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};
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GMR1_IE_FUNC(gmr1_ie_com_cm2)
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{
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proto_tree_add_item(tree, hf_com_cm2_spare1,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_revision,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_early_send,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_a5_1,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_mes_type,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_com_cm2_spare2,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_ss_screen_ind,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_sms_cap,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_spare3,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_freq_cap,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_com_cm2_cm3_presence,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_spare4,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_a5_3,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_com_cm2_a5_2_gmr1,
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tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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return 3;
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}
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/* [1] 11.5.1.8 - Spare Half Octet */
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GMR1_IE_FUNC(gmr1_ie_com_spare_nibble)
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{
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proto_tree_add_item(tree, hf_com_spare_nibble, tvb, offset, 1, ENC_BIG_ENDIAN);
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return 1;
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}
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elem_fcn gmr1_ie_common_func[NUM_GMR1_IE_COMMON] = {
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gmr1_ie_com_cm2, /* MES Classmark 2 */
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gmr1_ie_com_spare_nibble, /* Spare Half Octet */
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};
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/* ------------------------------------------------------------------------ */
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/* Messages and IEs parsing */
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/* ------------------------------------------------------------------------ */
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void
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gmr1_get_msg_params(gmr1_pd_e pd, guint8 oct, const gchar **msg_str,
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int *ett_tree, int *hf_idx, gmr1_msg_func_t *msg_func_p)
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{
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switch (pd) {
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case GMR1_PD_RR:
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gmr1_get_msg_rr_params(oct, 1, msg_str, ett_tree, hf_idx, msg_func_p);
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break;
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default:
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*msg_str = NULL;
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*ett_tree = -1;
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*hf_idx = -1;
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*msg_func_p = NULL;
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}
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}
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/* ------------------------------------------------------------------------ */
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/* Register code */
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/* ------------------------------------------------------------------------ */
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void
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proto_register_gmr1_common(void)
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{
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static hf_register_info hf[] = {
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{ &hf_gmr1_skip_ind,
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{ "Skip Indicator", "gmr1.skip_ind",
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FT_UINT8, BASE_DEC, NULL, 0xf0,
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NULL, HFILL }
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},
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{ &hf_gmr1_l3_pd,
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{ "Protocol discriminator","gmr1.l3_protocol_discriminator",
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FT_UINT8, BASE_DEC, VALS(gmr1_pd_vals), 0x0f,
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NULL, HFILL }
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},
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{ &hf_gmr1_elem_id,
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{ "Element ID", "gmr1.ie.elem_id",
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FT_UINT8, BASE_HEX, NULL, 0,
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NULL, HFILL }
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},
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{ &hf_gmr1_len,
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{ "Length", "gmr1.ie.length",
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FT_UINT8, BASE_DEC, NULL, 0,
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NULL, HFILL }
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},
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{ &hf_com_cm2_spare1,
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{ "Spare", "gmr1.common.cm2.spare1",
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FT_UINT8, BASE_DEC, NULL, 0x80,
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NULL, HFILL }
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},
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{ &hf_com_cm2_revision,
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{ "Revision Level", "gmr1.common.cm2.revision",
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FT_UINT8, BASE_DEC, VALS(com_cm2_revision_vals), 0x60,
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NULL, HFILL }
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},
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{ &hf_com_cm2_early_send,
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{ "ES IND", "gmr1.common.cm2.early_send",
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FT_UINT8, BASE_DEC, VALS(com_cm2_early_send_vals), 0x10,
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NULL, HFILL }
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},
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{ &hf_com_cm2_a5_1,
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{ "A5/1", "gmr1.common.cm2.a5_1",
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FT_UINT8, BASE_DEC, VALS(com_cm2_a5_1_vals), 0x08,
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NULL, HFILL }
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},
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{ &hf_com_cm2_mes_type,
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{ "MES terminal type", "gmr1.common.cm2.mes_type",
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FT_UINT8, BASE_DEC, VALS(com_cm2_mes_type_vals), 0x07,
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NULL, HFILL }
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},
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{ &hf_com_cm2_spare2,
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{ "Spare", "gmr1.common.cm2.spare2",
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FT_UINT8, BASE_DEC, NULL, 0xc0,
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NULL, HFILL }
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},
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{ &hf_com_cm2_ss_screen_ind,
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{ "SS Screening Indicator", "gmr1.common.cm2.ss_screen_ind",
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FT_UINT8, BASE_DEC, VALS(com_cm2_ss_screen_ind_vals), 0x30,
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NULL, HFILL }
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},
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{ &hf_com_cm2_sms_cap,
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{ "SM capability", "gmr1.common.cm2.sms_cap",
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FT_UINT8, BASE_DEC, VALS(com_cm2_sms_cap_vals), 0x08,
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NULL, HFILL }
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},
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{ &hf_com_cm2_spare3,
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{ "Spare", "gmr1.common.cm2.spare3",
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FT_UINT8, BASE_DEC, NULL, 0x06,
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NULL, HFILL }
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},
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{ &hf_com_cm2_freq_cap,
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{ "FC", "gmr1.common.cm2.freq_cap",
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FT_UINT8, BASE_DEC, VALS(com_cm2_freq_cap_vals), 0x01,
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NULL, HFILL }
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},
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{ &hf_com_cm2_cm3_presence,
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{ "CM3", "gmr1.common.cm2.cm3_presence",
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FT_UINT8, BASE_DEC, VALS(com_cm3_presence_vals), 0x80,
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NULL, HFILL }
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},
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{ &hf_com_cm2_spare4,
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{ "Spare", "gmr1.common.cm2.spare4",
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FT_UINT8, BASE_DEC, NULL, 0x7c,
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NULL, HFILL }
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},
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{ &hf_com_cm2_a5_3,
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{ "A5/3", "gmr1.common.cm2.a5_3",
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FT_UINT8, BASE_DEC, VALS(com_cm2_a5_3_vals), 0x02,
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NULL, HFILL }
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},
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{ &hf_com_cm2_a5_2_gmr1,
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{ "A5/2 GMR-1", "gmr1.common.cm2.a5_2_gmr1",
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FT_UINT8, BASE_DEC, VALS(com_cm2_a5_2_gmr1_vals), 0x01,
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NULL, HFILL }
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},
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{ &hf_com_spare_nibble,
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{ "Spare Half Octet", "gmr1.common.spare_nibble",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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};
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/* Register the protocol name and field description */
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proto_gmr1_common = proto_register_protocol("GEO-Mobile Radio (1) Common", "GMR-1 Common", "gmr1.common");
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proto_register_field_array(proto_gmr1_common, hf, array_length(hf));
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}
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/*
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* Editor modelines - https://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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