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/* packet-gmr1_common.c
*
* Routines for GMR-1 dissection in wireshark (common stuff).
* Copyright (c) 2011 Sylvain Munaut <tnt@246tNt.com>
*
* References:
* [1] ETSI TS 101 376-4-8 V1.3.1 - GMR-1 04.008
* [2] ETSI TS 101 376-4-8 V2.2.1 - GMPRS-1 04.008
* [3] ETSI TS 101 376-4-8 V3.1.1 - GMR-1 3G 44.008
* [4] ETSI TS 100 940 V7.21.0 - GSM 04.08
* [5] ETSI TS 101 376-4-12 V3.2.1 - GMR-1 3G 44.060
* [6] ETSI TS 101 376-5-6 V1.3.1 - GMR-1 05.008
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include "packet-gmr1_common.h"
#include "packet-gmr1_rr.h"
void proto_register_gmr1_common(void);
/* GMR-1 Common proto */
static int proto_gmr1_common;
/* ------------------------------------------------------------------------ */
/* Protocol descriptor (see [1] 11.2 & [4] 10.2) */
/* ------------------------------------------------------------------------ */
const value_string gmr1_pd_vals[] = {
{ GMR1_PD_CC, "Call Control; call related SS messages" },
{ GMR1_PD_MM, "Mobility Management messages" },
{ GMR1_PD_RR, "Radio Resource management messages" },
{ GMR1_PD_GMM, "GPRS Mobility Management messages" },
{ GMR1_PD_SM, "Session Management messages" },
{ GMR1_PD_DTRS, "DTMF transmission and reception service" },
{ 0, NULL }
};
const value_string gmr1_pd_short_vals[] = {
{ GMR1_PD_CC, "CC" }, /* Call Control; call related SS messages */
{ GMR1_PD_MM, "MM" }, /* Mobility Management messages */
{ GMR1_PD_RR, "RR" }, /* Radio Resource management messages */
{ GMR1_PD_GMM, "GMM" }, /* GPRS Mobility Management messages */
{ GMR1_PD_SM, "SM" }, /* Session Management messages */
{ GMR1_PD_DTRS, "DTRS" }, /* DTMF transmission and reception service */
{ 0, NULL}
};
/* ------------------------------------------------------------------------ */
/* Common Information Elements */
/* ------------------------------------------------------------------------ */
static const value_string gmr1_ie_common_strings[] = {
{ GMR1_IE_COM_CM2,
"Mobile Earth Station Classmark 2" }, /* [1] 11.5.1.6 */
{ GMR1_IE_COM_SPARE_NIBBLE,
"Spare Half Octet" }, /* [1] 11.5.1.8 */
{ 0, NULL}
};
value_string_ext gmr1_ie_common_strings_ext = VALUE_STRING_EXT_INIT(gmr1_ie_common_strings);
int ett_gmr1_ie_common[NUM_GMR1_IE_COMMON];
/* Fields */
int hf_gmr1_skip_ind;
int hf_gmr1_l3_pd;
int hf_gmr1_elem_id;
int hf_gmr1_len;
static int hf_com_cm2_spare1;
static int hf_com_cm2_revision;
static int hf_com_cm2_early_send;
static int hf_com_cm2_a5_1;
static int hf_com_cm2_mes_type;
static int hf_com_cm2_spare2;
static int hf_com_cm2_ss_screen_ind;
static int hf_com_cm2_sms_cap;
static int hf_com_cm2_spare3;
static int hf_com_cm2_freq_cap;
static int hf_com_cm2_cm3_presence;
static int hf_com_cm2_spare4;
static int hf_com_cm2_a5_3;
static int hf_com_cm2_a5_2_gmr1;
static int hf_com_spare_nibble;
/* [1] 11.5.1.6 - Mobile Earth Station Classmark 2 */
static const value_string com_cm2_revision_vals[] = {
{ 0, "Reserved for Phase 1" },
{ 1, "Phase 2 MESs" },
{ 2, "Reserved" },
{ 3, "Reserved" },
{ 0, NULL }
};
static const value_string com_cm2_early_send_vals[] = {
{ 0, "\"Controlled Early Classmark Sending\" option is not implemented" },
{ 1, "\"Controlled Early Classmark Sending\" option is implemented" },
{ 0, NULL }
};
static const value_string com_cm2_a5_1_vals[] = {
{ 0, "Encryption algorithm A5/1 available" },
{ 1, "Encryption algorithm A5/1 not available" },
{ 0, NULL }
};
static const value_string com_cm2_mes_type_vals[] = {
{ 0, "Class 1 Reserved" },
{ 1, "Class 2 Used by all fixed GMR-1 terminals" },
{ 2, "Class 3 Used by all vehicular GMR-1 terminals" },
{ 3, "Class 4 Used by all handheld GMR-1 terminals" },
{ 0, NULL }
};
static const value_string com_cm2_ss_screen_ind_vals[] = {
{ 0, "Defined in GSM 04.80 [29]" },
{ 1, "Defined in GSM 04.80 [29]" },
{ 2, "Defined in GSM 04.80 [29]" },
{ 3, "Defined in GSM 04.80 [29]" },
{ 0, NULL }
};
static const value_string com_cm2_sms_cap_vals[] = {
{ 0, "MES does not support mobile terminated point-to-point SMS" },
{ 1, "MES supports mobile terminated point-to-point SMS" },
{ 0, NULL }
};
static const value_string com_cm2_freq_cap_vals[] = {
{ 0, "Not used in GMR-1" },
{ 1, "Not used in GMR-1" },
{ 0, NULL }
};
static const value_string com_cm3_presence_vals[] = {
{ 0, "No additional MES capability information available" },
{ 1, "Additional MES capabilities are described in the Classmark 3 IE" },
{ 0, NULL }
};
static const value_string com_cm2_a5_3_vals[] = {
{ 0, "Encryption algorithm A5/3 not available" },
{ 1, "Encryption algorithm A5/3 available" },
{ 0, NULL }
};
static const value_string com_cm2_a5_2_gmr1_vals[] = {
{ 0, "Encryption algorithm GMR-1 A5/2 not available" },
{ 1, "Encryption algorithm GMR-1 A5/2 available" },
{ 0, NULL }
};
GMR1_IE_FUNC(gmr1_ie_com_cm2)
{
proto_tree_add_item(tree, hf_com_cm2_spare1,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_revision,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_early_send,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_a5_1,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_mes_type,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(tree, hf_com_cm2_spare2,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_ss_screen_ind,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_sms_cap,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_spare3,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_freq_cap,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(tree, hf_com_cm2_cm3_presence,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_spare4,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_a5_3,
tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_com_cm2_a5_2_gmr1,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
return 3;
}
/* [1] 11.5.1.8 - Spare Half Octet */
GMR1_IE_FUNC(gmr1_ie_com_spare_nibble)
{
proto_tree_add_item(tree, hf_com_spare_nibble, tvb, offset, 1, ENC_BIG_ENDIAN);
return 1;
}
elem_fcn gmr1_ie_common_func[NUM_GMR1_IE_COMMON] = {
gmr1_ie_com_cm2, /* MES Classmark 2 */
gmr1_ie_com_spare_nibble, /* Spare Half Octet */
};
/* ------------------------------------------------------------------------ */
/* Messages and IEs parsing */
/* ------------------------------------------------------------------------ */
void
gmr1_get_msg_params(gmr1_pd_e pd, uint8_t oct, const char **msg_str,
int *ett_tree, int *hf_idx, gmr1_msg_func_t *msg_func_p)
{
switch (pd) {
case GMR1_PD_RR:
gmr1_get_msg_rr_params(oct, 1, msg_str, ett_tree, hf_idx, msg_func_p);
break;
default:
*msg_str = NULL;
*ett_tree = -1;
*hf_idx = -1;
*msg_func_p = NULL;
}
}
/* ------------------------------------------------------------------------ */
/* Register code */
/* ------------------------------------------------------------------------ */
void
proto_register_gmr1_common(void)
{
static hf_register_info hf[] = {
{ &hf_gmr1_skip_ind,
{ "Skip Indicator", "gmr1.skip_ind",
FT_UINT8, BASE_DEC, NULL, 0xf0,
NULL, HFILL }
},
{ &hf_gmr1_l3_pd,
{ "Protocol discriminator","gmr1.l3_protocol_discriminator",
FT_UINT8, BASE_DEC, VALS(gmr1_pd_vals), 0x0f,
NULL, HFILL }
},
{ &hf_gmr1_elem_id,
{ "Element ID", "gmr1.ie.elem_id",
FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_gmr1_len,
{ "Length", "gmr1.ie.length",
FT_UINT8, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_com_cm2_spare1,
{ "Spare", "gmr1.common.cm2.spare1",
FT_UINT8, BASE_DEC, NULL, 0x80,
NULL, HFILL }
},
{ &hf_com_cm2_revision,
{ "Revision Level", "gmr1.common.cm2.revision",
FT_UINT8, BASE_DEC, VALS(com_cm2_revision_vals), 0x60,
NULL, HFILL }
},
{ &hf_com_cm2_early_send,
{ "ES IND", "gmr1.common.cm2.early_send",
FT_UINT8, BASE_DEC, VALS(com_cm2_early_send_vals), 0x10,
NULL, HFILL }
},
{ &hf_com_cm2_a5_1,
{ "A5/1", "gmr1.common.cm2.a5_1",
FT_UINT8, BASE_DEC, VALS(com_cm2_a5_1_vals), 0x08,
NULL, HFILL }
},
{ &hf_com_cm2_mes_type,
{ "MES terminal type", "gmr1.common.cm2.mes_type",
FT_UINT8, BASE_DEC, VALS(com_cm2_mes_type_vals), 0x07,
NULL, HFILL }
},
{ &hf_com_cm2_spare2,
{ "Spare", "gmr1.common.cm2.spare2",
FT_UINT8, BASE_DEC, NULL, 0xc0,
NULL, HFILL }
},
{ &hf_com_cm2_ss_screen_ind,
{ "SS Screening Indicator", "gmr1.common.cm2.ss_screen_ind",
FT_UINT8, BASE_DEC, VALS(com_cm2_ss_screen_ind_vals), 0x30,
NULL, HFILL }
},
{ &hf_com_cm2_sms_cap,
{ "SM capability", "gmr1.common.cm2.sms_cap",
FT_UINT8, BASE_DEC, VALS(com_cm2_sms_cap_vals), 0x08,
NULL, HFILL }
},
{ &hf_com_cm2_spare3,
{ "Spare", "gmr1.common.cm2.spare3",
FT_UINT8, BASE_DEC, NULL, 0x06,
NULL, HFILL }
},
{ &hf_com_cm2_freq_cap,
{ "FC", "gmr1.common.cm2.freq_cap",
FT_UINT8, BASE_DEC, VALS(com_cm2_freq_cap_vals), 0x01,
NULL, HFILL }
},
{ &hf_com_cm2_cm3_presence,
{ "CM3", "gmr1.common.cm2.cm3_presence",
FT_UINT8, BASE_DEC, VALS(com_cm3_presence_vals), 0x80,
NULL, HFILL }
},
{ &hf_com_cm2_spare4,
{ "Spare", "gmr1.common.cm2.spare4",
FT_UINT8, BASE_DEC, NULL, 0x7c,
NULL, HFILL }
},
{ &hf_com_cm2_a5_3,
{ "A5/3", "gmr1.common.cm2.a5_3",
FT_UINT8, BASE_DEC, VALS(com_cm2_a5_3_vals), 0x02,
NULL, HFILL }
},
{ &hf_com_cm2_a5_2_gmr1,
{ "A5/2 GMR-1", "gmr1.common.cm2.a5_2_gmr1",
FT_UINT8, BASE_DEC, VALS(com_cm2_a5_2_gmr1_vals), 0x01,
NULL, HFILL }
},
{ &hf_com_spare_nibble,
{ "Spare Half Octet", "gmr1.common.spare_nibble",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
};
/* Register the protocol name and field description */
proto_gmr1_common = proto_register_protocol("GEO-Mobile Radio (1) Common", "GMR-1 Common", "gmr1.common");
proto_register_field_array(proto_gmr1_common, hf, array_length(hf));
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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