/* packet-sgsap.c * Routines for SGs Application Part (SGsAP) protocol dissection * * Copyright 2010 - 2017, Anders Broman * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later * * References: 3GPP TS 29.118 V10.2.0 (2010-12) */ #include "config.h" #include #include #include #include #include #include #include "packet-gsm_a_common.h" #include "packet-e212.h" #define PNAME "SGs Application Part (SGsAP)" #define PSNAME "SGSAP" #define PFNAME "sgsap" void proto_register_sgsap(void); void proto_reg_handoff_sgsap(void); /* Global variables */ static dissector_handle_t gsm_a_dtap_handle; /* The registered SCTP port number for SGsAP is 29118. * The payload protocol identifier to be used for SGsAP is 0. */ #define SGSAP_SCTP_PORT_RANGE "29118" /* Initialize the protocol and registered fields */ static int proto_sgsap; static int hf_sgsap_msg_type; int hf_sgsap_elem_id; static int hf_sgsap_eps_location_update_type; static int hf_sgsap_service_indicator_value; static int hf_sgsap_sgs_cause; static int hf_sgsap_ue_emm_mode; static int hf_sgsap_eci; static int hf_sgsap_cn_id; static int hf_sgsap_imsi_det_eps; static int hf_sgsap_imsi_det_non_eps; static int hf_sgsap_lcs_indic; static int hf_sgsap_mme_name; static int hf_sgsap_vlr_name; static int hf_sgsap_imeisv; static int hf_sgsap_unknown_msg; static int hf_sgsap_message_elements; static int hf_sgsap_csri; static int hf_sgsap_sel_cs_dmn_op; static int ett_sgsap; static int ett_sgsap_sel_cs_dmn_op; static expert_field ei_sgsap_extraneous_data; static expert_field ei_sgsap_missing_mandatory_element; static dissector_handle_t sgsap_handle; static void get_sgsap_msg_params(uint8_t oct, const char **msg_str, int *ett_tree, int *hf_idx, msg_fcn *msg_fcn_p); /* * 9.4 Information elements */ /* * 9.4.1 CLI */ /* * Octets 3 to 14 contain the value part of the Calling party BCD number information element * defined in subclause 10.5.4.9 of 3GPP TS 24.008 [8] (octets 3 to 14, i.e. not including * 3GPP TS 24.008 IEI and 3GPP TS 24.008 length indicator) * ( packet-gsm_a_dtap.c ) */ /* * 9.4.2 EPS location update type */ /* EPS location update type value (octet 3) */ static const value_string sgsap_eps_location_update_type_values[] = { { 0x00, "Shall not be sent in this version of the protocol" }, { 0x01, "IMSI attach" }, { 0x02, "Normal location update" }, { 0, NULL } }; static uint16_t de_sgsap_eps_loc_upd_type(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; uint8_t oct; curr_offset = offset; /* Octet 3 EPS location update type value */ proto_tree_add_item(tree, hf_sgsap_eps_location_update_type, tvb, offset, 1, ENC_BIG_ENDIAN); if (add_string) { oct = tvb_get_uint8(tvb, curr_offset); snprintf(add_string, string_len, " - %s", val_to_str_const(oct, sgsap_eps_location_update_type_values, "Reserved")); } curr_offset++; return curr_offset - offset; } /* * 9.4.3 Erroneous message * * See subclause 18.4.5 in 3GPP TS 29.018 [16]. */ static uint16_t de_sgsap_err_msg(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string , int string_len) { const char *msg_str; int ett_tree; int hf_idx; void(*msg_fcn_p)(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len); uint8_t oct; /* 18.4.5 Erroneous message * The Erroneous message IE is a TLV IE that encapsulates the message in error. * Octet 3 - Octet n * Erroneous message including the message type. */ /* Message type IE*/ oct = tvb_get_uint8(tvb, offset); msg_fcn_p = NULL; ett_tree = -1; hf_idx = -1; msg_str = NULL; proto_tree_add_item(tree, hf_sgsap_msg_type, tvb, offset, 1, ENC_BIG_ENDIAN); get_sgsap_msg_params(oct, &msg_str, &ett_tree, &hf_idx, &msg_fcn_p); if (msg_str) { if (add_string) snprintf(add_string, string_len, " - %s", msg_str); } if (msg_fcn_p){ volatile uint32_t curr_offset = offset + 1; TRY { /*let's try to decode erroneous message and catch exceptions as it could be malformed */ (*msg_fcn_p)(tvb, tree, pinfo, curr_offset, len - 1); } CATCH_BOUNDS_ERRORS { show_exception(tvb, pinfo, tree, EXCEPT_CODE, GET_MESSAGE); } ENDTRY } return len; } /* * 9.4.3a E-UTRAN Cell Global Identity * * The coding of the E-UTRAN Cell Global Identity value is according to ECGI field information element * as specified in subclause 8.21.5 of 3GPP TS 29.274 [17A] (GTPv2-C) */ uint16_t de_sgsap_ecgi(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; dissect_e212_mcc_mnc(tvb, pinfo, tree, offset, E212_ECGI, true); curr_offset += 3; proto_tree_add_item(tree, hf_sgsap_eci, tvb, curr_offset, 4, ENC_BIG_ENDIAN); curr_offset += 4; return curr_offset-offset; } /* * 9.4.4 Global CN-Id * * See subclause 18.4.27 in 3GPP TS 29.018 [16]. * 18.4.27 Global CN-Id * The Global CN-Id consists of a PLMN-Id and a CN-Id, see 3GPP TS 23.003. The PLMN-Id consists of MCC and MNC * coded according to Location Area Identification in 3GPP TS 24.008. The CN-Id is an integer defined by O&M. The * least significant bit of the CN-Id field is bit 1 of octet 7 and the most significant bit is bit 8 of octet 6. If the CN-Id does * not fill the field reserved for it, the rest of the bits are set to '0'. */ static uint16_t de_sgsap_g_cn_id(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; dissect_e212_mcc_mnc(tvb, pinfo, tree, offset, E212_NONE, true); curr_offset += 3; proto_tree_add_item(tree, hf_sgsap_cn_id, tvb, curr_offset, 2, ENC_BIG_ENDIAN); curr_offset += 2; return curr_offset-offset; } /* * 9.4.5 IMEISV * See subclause 18.4.9 in 3GPP TS 29.018 [16]. * The IMEISV is coded as a sequence of BCD digits, compressed two into each octet. * The IMEISV consists of 16 digits * (see 3GPP TS 23.003). */ static uint16_t de_sgsap_imeisv(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { char *imeisv_str; uint32_t curr_offset; curr_offset = offset; proto_tree_add_item_ret_display_string(tree, hf_sgsap_imeisv, tvb, curr_offset, len, ENC_BCD_DIGITS_0_9|ENC_LITTLE_ENDIAN, pinfo->pool, &imeisv_str); if (add_string) { /* (len<<2)+4 = the maximum number of bytes to produce (including the terminating nul character). */ snprintf(add_string, (len<<2)+4, " - %s", imeisv_str); } return len; } /* * 9.4.6 IMSI * See subclause 18.4.10 in 3GPP TS 29.018 [16]. */ /* The IMSI is coded as a sequence of BCD digits, compressed two into each octet. * This is a variable length element, and includes a length indicator. * The IMSI is defined in 3GPP TS 23.003. It shall not exceed 15 digits (see 3GPP TS 23.003). */ /* * 9.4.7 IMSI detach from EPS service type */ /* IMSI detach from EPS service type value (octet 3) */ static const value_string sgsap_imsi_det_from_eps_serv_type_values[] = { { 0x00, "Interpreted as reserved in this version of the protocol" }, { 0x01, "Network initiated IMSI detach from EPS services" }, { 0x02, "UE initiated IMSI detach from EPS services" }, { 0x03, "EPS services not allowed" }, { 0, NULL } }; static uint16_t de_sgsap_imsi_det_eps(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; proto_tree_add_item(tree, hf_sgsap_imsi_det_eps, tvb, curr_offset, 1, ENC_BIG_ENDIAN); curr_offset += 1; return curr_offset-offset; } /* * 9.4.8 IMSI detach from non-EPS service type */ /* IMSI detach from non-EPS service type value (octet 3)*/ static const value_string sgsap_imsi_det_from_non_eps_serv_type_values[] = { { 0x00, "Interpreted as reserved in this version of the protocol" }, { 0x01, "Explicit UE initiated IMSI detach from non-EPS services" }, { 0x02, "Combined UE initiated IMSI detach from EPS and non-EPS services" }, { 0x03, "Implicit network initiated IMSI detach from non-EPS services" }, { 0, NULL } }; static uint16_t de_sgsap_imsi_det_non_eps(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; proto_tree_add_item(tree, hf_sgsap_imsi_det_non_eps, tvb, curr_offset, 1, ENC_BIG_ENDIAN); curr_offset += 1; return curr_offset-offset; } /* * 9.4.9 LCS client identity * The coding of the LCS client identity value is according to LCS-ClientID * as specified in subclause 17.7.13 of 3GPP TS 29.002 [15] * (packet-nas_eps.c) */ /* * 9.4.10 LCS indicator */ static const value_string sgsap_lcs_indic_values[] = { { 0x00, "Normal, unspecified in this version of the protocol" }, { 0x01, "MT-LR" }, { 0, NULL } }; static uint16_t de_sgsap_lcs_indic(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; proto_tree_add_item(tree, hf_sgsap_lcs_indic, tvb, curr_offset, 1, ENC_BIG_ENDIAN); curr_offset += 1; return curr_offset-offset; } /* * 9.4.11 Location area identifier * * Octets 3 to 7 contain the value part of the Location area identification information element * defined in 3GPP TS 24.008 [8] (starting with octet 2, i.e. not including 3GPP TS 24.008 IEI) *(packet-gsm_a_common.c) */ /* * 9.4.12 MM information * For the coding see subclause 18.4.16 in 3GPP TS 29.018 [16]. * User information: This field is composed of one or more of the * information elements of the MM information message as defined in * 3GPP TS 24.008, excluding the Protocol discriminator, Skip * indicator and Message type. This field includes the IEI and length * indicatior of the other information elements. */ static uint16_t de_sgsap_mm_info(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; dtap_mm_mm_info(tvb, tree, pinfo, curr_offset, len); return len; } /* * 9.4.13 MME name */ static uint16_t de_sgsap_mme_name(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { unsigned name_len; uint8_t *fqdn = NULL; /* The MME name information element specifies the MME name and is coded as shown in figure 9.4.13.1. Octets 3 * through n contain the name in the form of a fully qualified domain name (FQDN) as specified in 3GPP TS 23.003 [3]. * The value part of the MME name information element (not including IEI and length indicator) shall have a length of 55 * octets. */ if (len > 0) { name_len = tvb_get_uint8(tvb, offset); if (name_len < 0x20) { fqdn = tvb_get_string_enc(pinfo->pool, tvb, offset, len, ENC_APN_STR); } else{ fqdn = tvb_get_string_enc(pinfo->pool, tvb, offset, len, ENC_ASCII); } proto_tree_add_string(tree, hf_sgsap_mme_name, tvb, offset, len, fqdn); if (add_string) snprintf(add_string, string_len, " - %s", fqdn); } return len; } /* * 9.4.14 Mobile identity * See subclause 18.4.17 in 3GPP TS 29.018 [16]. * (packet-gsm_a_common.c) */ /* * 9.4.14a Mobile Station Classmark 2 * With the exception of the IEI, the contents are specified in subclause 10.5.1.6 in 3GPP TS 24.008 [8]. * (packet-gsm_a_common.c) */ /* * 9.4.15 NAS message container * Octets 3 to 253 contain the SMS message (i.e. CP DATA, CP ACK or CP ERROR) * as defined in subclause 7.2 of 3GPP TS 24.011 [10] */ static uint16_t de_sgsap_nas_msg_container(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len, char *add_string _U_, int string_len _U_) { tvbuff_t *new_tvb; uint32_t curr_offset; curr_offset = offset; /* Octets 3 to 253 contain the SMS message (i.e. CP DATA, CP ACK or CP ERROR) * as defined in subclause 7.2 of 3GPP TS 24.011 [10] */ new_tvb = tvb_new_subset_length(tvb, curr_offset, len); if (gsm_a_dtap_handle) { call_dissector(gsm_a_dtap_handle, new_tvb, pinfo, tree); } return len; } /* * 9.4.16 Reject cause * See subclause 18.4.21 in 3GPP TS 29.018 [16]. * The rest of the information element is coded as the value part of * the reject cause IE defined in 3GPP TS 24.008, not including * 3GPP TS 24.008 IEI. * (packet-gsm_a_dtap.c) */ /* * 9.4.17 Service indicator */ /* Octet 3 Service indicator value */ static const value_string sgsap_service_indicator_values[] = { { 0x00, "Shall not be sent in this version of the protocol" }, { 0x01, "CS call indicator" }, { 0x02, "SMS indicator" }, { 0, NULL } }; static uint16_t de_sgsap_serv_indic(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; uint8_t oct; curr_offset = offset; /* Octet 3 Service indicator value */ proto_tree_add_item(tree, hf_sgsap_service_indicator_value, tvb, offset, 1, ENC_BIG_ENDIAN); if (add_string) { oct = tvb_get_uint8(tvb, curr_offset); snprintf(add_string, string_len, " - %s", val_to_str_const(oct, sgsap_service_indicator_values, "Reserved")); } curr_offset++; return curr_offset-offset; } /* * 9.4.18 SGs cause */ /* SGs cause value (octet 3) */ static const value_string sgsap_sgs_cause_values[] = { { 0x00, "Normal, unspecified in this version of the protocol" }, { 0x01, "IMSI detached for EPS services" }, { 0x02, "IMSI detached for EPS and non-EPS services" }, { 0x03, "IMSI unknown" }, { 0x04, "IMSI detached for non-EPS services" }, { 0x05, "IMSI implicitly detached for non-EPS services" }, { 0x06, "UE unreachable" }, { 0x07, "Message not compatible with the protocol state" }, { 0x08, "Missing mandatory information element" }, { 0x09, "Invalid mandatory information" }, { 0x0a, "Conditional information element error" }, { 0x0b, "Semantically incorrect message" }, { 0x0c, "Message unknown" }, { 0x0d, "Mobile terminating CS fallback call rejected by the user" }, { 0x0e, "UE temporarily unreachable" }, { 0, NULL } }; static value_string_ext sgsap_sgs_cause_values_ext = VALUE_STRING_EXT_INIT(sgsap_sgs_cause_values); static uint16_t de_sgsap_sgs_cause(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; uint8_t oct; curr_offset = offset; proto_tree_add_item(tree, hf_sgsap_sgs_cause, tvb, offset, 1, ENC_BIG_ENDIAN); if (add_string) { oct = tvb_get_uint8(tvb, curr_offset); snprintf(add_string, string_len, " - %s", val_to_str_ext_const(oct, &sgsap_sgs_cause_values_ext, "Reserved")); } curr_offset++; return curr_offset-offset; } /* * 9.4.19 SS code * The coding of the SS code value is according to SS-Code as specified in * subclause 17.7.5 of 3GPP TS 29.002 [15] * ( packet-nas_eps.c) */ /* * 9.4.20 TMSI * See subclause 18.4.23 in 3GPP TS 29.018 [16]. * (packet-gsm_a_bssmap.c) */ /* * 9.4.21 TMSI status * * See subclause 18.4.24 in 3GPP TS 29.018 [16]. * (packet-gsm_a_gm.c) */ /* * 9.4.21a Tracking Area Identity * Octets 3 to 7 contain the value part of the Tracking Area Identity information element defined in 3GPP TS 24.301 [14] * (starting with octet 2, i.e. not including 3GPP TS 24.301 IEI) * (packet-nas_eps.c) */ /* * 9.4.21b UE Time Zone * The coding of the UE Time Zone value is according to value part of the Time Zone information element as specified * in subclause 10.5.3.8 of 3GPP TS 24.008 [8] (i.e. not including 3GPP TS 24.008 IEI) * (packet-gsm_a_dtap.c) */ /* * 9.4.21c UE EMM mode */ static const value_string sgsap_ue_emm_mode_values[] = { { 0x00, "EMM-IDLE" }, { 0x01, "EMM-CONNECTED" }, { 0, NULL } }; static uint16_t de_sgsap_ue_emm_mode(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { uint32_t curr_offset; curr_offset = offset; proto_tree_add_item(tree, hf_sgsap_ue_emm_mode, tvb, offset, 1, ENC_BIG_ENDIAN); curr_offset += 1; return curr_offset-offset; } /* * 9.4.22 VLR name */ static uint16_t de_sgsap_vlr_name(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { unsigned name_len; uint8_t *fqdn = NULL; /* The VLR name information element specifies the VLR name and is coded as shown in figure 9.4.22.1. * Octets 3 through n contain the VLR name in the form of a fully qualified domain name (FQDN) * as specified in IETF RFC 1035 [21]. */ if (len > 0) { name_len = tvb_get_uint8(tvb, offset); if (name_len < 0x20) { fqdn = tvb_get_string_enc(pinfo->pool, tvb, offset, len, ENC_APN_STR); } else{ fqdn = tvb_get_string_enc(pinfo->pool, tvb, offset, len, ENC_ASCII); } proto_tree_add_string(tree, hf_sgsap_vlr_name, tvb, offset, len, fqdn); if (add_string) snprintf(add_string, string_len, " - %s", fqdn); } return len; } /* * 9.4.23 Channel needed * See subclause 18.4.2 in 3GPP TS 29.018 [16]. * The rest of the information element is coded as the IEI part and the * value part of the Channel Needed IE defined in 3GPP TS 44.018 * (packet-gsm_a_bssmap.c) */ /* * 9.4.24 eMLPP priority * See subclause 18.4.4 in 3GPP TS 29.018 [16]. * The rest of the information element is coded as the value part of * the eMLPP-Priority IE defined in 3GPP TS 48.008 (not including * 3GPP TS 48.008 IEI and 3GPP TS 48.008 length indicator). * (packet-gsm_a_bssmap.c) */ /* * */ static uint16_t de_sgsap_add_paging_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { /* Octet 3 0 0 0 0 0 0 0 CSRI */ proto_tree_add_item(tree, hf_sgsap_csri, tvb, offset, 1, ENC_BIG_ENDIAN); return len; } #if 0 Reuse GSM_A_PDU_TYPE_GM, DE_NET_RES_ID_CONT /* * 9.4.26 TMSI based NRI container */ static uint16_t de_sgsap_tmsi_based_nri_cont(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { /* See subclause 18.4.28 in 3GPP TS 29.018 [16]. * Which says The TMSI based NRI container value value consists of 10 bits which correspond to bits 23 to 14 of the valid TMSI * (3GPP TS 23.236 and * Octet 3 and Octet 4 The rest of the information element is coded as the value part of the Network resource identifier container IE * defined in 3GPP TS 24.008. */ return len; } #endif /* * 9.4.27 Selected CS domain operator */ static uint16_t de_sgsap_selected_cs_dmn_op(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len _U_, char *add_string _U_, int string_len _U_) { proto_item *item; proto_tree *sub_tree; /* Coded as octets 2 to 4 of the Location Area Identification IE, * defined in 3GPP TS 24.008 [8] (not including 3GPP TS 24.008 IEI * and LAC).(10.5.1.3 Location Area Identification) * MCC digit 2 MCC digit 1 octet 2 * MNC digit 3 MCC digit 3 octet 3 * MNC digit 2 MNC digit 1 octet 4 */ item = proto_tree_add_item(tree, hf_sgsap_sel_cs_dmn_op, tvb, offset, 1, ENC_NA); sub_tree = proto_item_add_subtree(item, ett_sgsap_sel_cs_dmn_op); dissect_e212_mcc_mnc_wmem_packet_str(tvb, pinfo, sub_tree, offset, E212_LAI, true); return len; } static const value_string sgsap_elem_strings[] = { { DE_SGSAP_IMSI, "IMSI" }, /* 9.4.6 */ { DE_SGSAP_VLR_NAME, "VLR name" }, /* 9.4.22 */ { DE_SGSAP_TMSI, "TMSI" }, /* 9.4.20 */ { DE_SGSAP_LOC_AREA_ID, "Location area identifier" }, /* 9.4.11 */ { DE_SGSAP_CH_NEEDED, "Channel Needed" }, /* 9.4.23 */ { DE_SGSAP_EMLPP_PRIO, "eMLPP Priority" }, /* 9.4.24 */ { DE_SGSAP_TMSI_STATUS, "TMSI status" }, /* 9.4.21 */ { DE_SGSAP_SGS_CAUSE, "SGs cause" }, /* 9.4.18 */ { DE_SGSAP_MME_NAME, "MME name" }, /* 9.4.13 */ { DE_SGSAP_EPS_LOC_UPD_TYPE, "EPS location update type" }, /* 9.4.2 */ { DE_SGSAP_GLOBAL_CN_ID, "Global CN-Id" }, /* 9.4.4 */ { DE_SGSAP_UDEF_11, "Undefined" }, /* */ { DE_SGSAP_UDEF_12, "Undefined" }, /* */ { DE_SGSAP_MID, "Mobile identity" }, /* 9.4.14 */ { DE_SGSAP_REJ_CAUSE, "Reject cause" }, /* 9.4.16 */ { DE_SGSAP_IMSI_DET_EPS, "IMSI detach from EPS service type" }, /* 9.4.7 */ { DE_SGSAP_IMSI_DET_NON_EPS, "IMSI detach from non-EPS service type" }, /* 9.4.8 */ { DE_SGSAP_IMEISV, "IMEISV" }, /* 9.4.5 */ { DE_SGSAP_NAS_MSG_CONTAINER, "NAS message container" }, /* 9.4.15 */ { DE_SGSAP_MM_INFO, "MM information" }, /* 9.4.12 */ { DE_SGSAP_UDEF_20, "Undefined" }, /* */ { DE_SGSAP_UDEF_21, "Undefined" }, /* */ { DE_SGSAP_UDEF_22, "Undefined" }, /* */ { DE_SGSAP_ERR_MSG, "Erroneous message" }, /* 9.4.3 */ { DE_SGSAP_CLI, "CLI" }, /* 9.4.1 */ { DE_SGSAP_LCS_CLIENT_ID, "LCS client identity" }, /* 9.4.9 */ { DE_SGSAP_LCS_INDIC, "LCS indicator" }, /* 9.4.10 */ { DE_SGSAP_SS_CODE, "SS code" }, /* 9.4.19 */ { DE_SGSAP_SERV_INDIC, "Service indicator" }, /* 9.4.17 */ { DE_SGSAP_UE_TZ, "UE Time Zone" }, /* 9.4.21b */ { DE_SGSAP_MSC_2, "Mobile Station Classmark 2" }, /* 9.4.14a */ { DE_SGSAP_TAID, "Tracking Area Identity" }, /* 9.4.21a */ { DE_SGSAP_ECGI, "E-UTRAN Cell Global Identity" }, /* 9.4.3a */ { DE_SGSAP_UE_EMM_MODE, "UE EMM mode" }, /* 9.4.21c */ { DE_SGSAP_ADD_PAGING_IND, "Additional paging indicators" }, /* 9.4.25 */ { DE_SGSAP_TMSI_BASED_NRI_CONT, "TMSI based NRI container" }, /* 9.4.26 */ { DE_SGSAP_SELECTED_CS_DMN_OP, "Selected CS domain operator" }, /* 9.4.27 */ { 0, NULL } }; value_string_ext sgsap_elem_strings_ext = VALUE_STRING_EXT_INIT(sgsap_elem_strings); #define NUM_SGSAP_ELEM array_length(sgsap_elem_strings) int ett_sgsap_elem[NUM_SGSAP_ELEM]; #if 0 This enum has been moved to packet-gsm_a_common to make it possible to use element dissecton from this dissector in other dissectors. It is left here as a comment for easier reference. Note this enum must be of the same size as the element decoding list typedef enum { DE_SGSAP_IMSI, /. 9.4.6 IMSI./ DE_SGSAP_VLR_NAME, /. 9.4.22 VLR name./ DE_SGSAP_TMSI, /. 9.4.20 TMSI ./ DE_SGSAP_LOC_AREA_ID, /. 9.4.11 Location area identifier ./ DE_SGSAP_CH_NEEDED, /. 9.4.23 Channel Needed ./ DE_SGSAP_EMLPP_PRIO, /. 9.4.24 eMLPP Priority./ DE_SGSAP_TMSI_STATUS, /. 9.4.21 TMSI status ./ DE_SGSAP_SGS_CAUSE, /. 9.4.18 SGs cause./ DE_SGSAP_MME_NAME, /. 9.4.13 MME name./ DE_SGSAP_EPS_LOC_UPD_TYPE, /. 9.4.2 EPS location update type./ DE_SGSAP_GLOBAL_CN_ID, /. 9.4.4 Global CN-Id./ DE_SGSAP_UDEF_11, /. Undefined ./ DE_SGSAP_UDEF_12, /. Undefined ./ DE_SGSAP_MID, /. 9.4.14 Mobile identity./ DE_SGSAP_REJ_CAUSE, /. 9.4.16 Reject cause ./ DE_SGSAP_IMSI_DET_EPS, /. 9.4.7 IMSI detach from EPS service type ./ DE_SGSAP_IMSI_DET_NON_EPS, /. 9.4.8 IMSI detach from non-EPS service type ./ DE_SGSAP_IMEISV, /. 9.4.5 IMEISV ./ DE_SGSAP_NAS_MSG_CONTAINER, /. 9.4.15 NAS message container./ DE_SGSAP_MM_INFO, /. 9.4.12 MM information./ DE_SGSAP_UDEF_20, /. Undefined ./ DE_SGSAP_UDEF_21, /. Undefined ./ DE_SGSAP_UDEF_22, /. Undefined ./ DE_SGSAP_ERR_MSG, /. 9.4.3 Erroneous message./ DE_SGSAP_CLI, /. 9.4.1 CLI ./ DE_SGSAP_LCS_CLIENT_ID, /. 9.4.9 LCS client identity ./ DE_SGSAP_LCS_INDIC, /. 9.4.10 LCS indicator ./ DE_SGSAP_SS_CODE, /. 9.4.19 SS code ./ DE_SGSAP_SERV_INDIC, /. 9.4.17 Service indicator ./ DE_SGSAP_UE_TZ, /. 9.4.21b UE Time Zone ./ DE_SGSAP_MSC_2, /. 9.4.14a Mobile Station Classmark 2 ./ DE_SGSAP_TAID, /. 9.4.21a Tracking Area Identity ./ DE_SGSAP_ECGI, /. 9.4.3a E-UTRAN Cell Global Identity ./ DE_SGSAP_UE_EMM_MODE, /. 9.4.21c UE EMM mode./ DE_SGSAP_ADD_PAGING_IND, /. 9.4.25 Additional paging indicators ./ DE_SGSAP_TMSI_BASED_NRI_CONT, /. 9.4.26 TMSI based NRI container ./ DE_SGSAP_SELECTED_CS_DMN_OP, /. 9.4.27 Selected CS domain operator ./ DE_SGAP_NONE /. NONE ./ } sgsap_elem_idx_t; #endif /* 0 */ uint16_t (*sgsap_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len, char *add_string, int string_len) = { NULL/*DE_SGSAP_IMSI*/, /* 9.4.6 IMSI*/ de_sgsap_vlr_name, /* 9.4.22 VLR name*/ NULL/*DE_SGSAP_TMSI*/, /* 9.4.20 TMSI */ NULL/*DE_SGSAP_LOC_AREA_ID*/, /* 9.4.11 Location area identifier */ NULL/*DE_SGSAP_CH_NEEDED*/, /* 9.4.23 Channel Needed */ NULL/*DE_SGSAP_EMLPP_PRIO*/, /* 9.4.24 eMLPP Priority*/ NULL/*DE_SGSAP_TMSI_STATUS*/, /* 9.4.21 TMSI status */ de_sgsap_sgs_cause, /* 9.4.18 SGs cause*/ de_sgsap_mme_name, /* 9.4.13 MME name*/ de_sgsap_eps_loc_upd_type, /* 9.4.2 EPS location update type*/ de_sgsap_g_cn_id, /* 9.4.4 Global CN-Id*/ NULL/*DE_SGSAP_UDEF_11*/, /* Undefined */ NULL/*DE_SGSAP_UDEF_12*/, /* Undefined */ NULL/*DE_SGSAP_MID*/, /* 9.4.14 Mobile identity*/ NULL/*DE_SGSAP_REJ_CAUSE*/, /* 9.4.16 Reject cause */ de_sgsap_imsi_det_eps, /* 9.4.7 IMSI detach from EPS service type */ de_sgsap_imsi_det_non_eps, /* 9.4.8 IMSI detach from non-EPS service type */ de_sgsap_imeisv, /* 9.4.5 IMEISV */ de_sgsap_nas_msg_container, /* 9.4.15 NAS message container*/ de_sgsap_mm_info, /* 9.4.12 MM information*/ NULL/*DE_SGSAP_UDEF_20*/, /* Undefined */ NULL/*DE_SGSAP_UDEF_21*/, /* Undefined */ NULL/*DE_SGSAP_UDEF_22*/, /* Undefined */ de_sgsap_err_msg, /* 9.4.3 Erroneous message*/ NULL/*DE_SGSAP_CLI*/, /* 9.4.1 CLI */ NULL/*DE_SGSAP_LCS_CLIENT_ID*/, /* 9.4.9 LCS client identity */ de_sgsap_lcs_indic, /* 9.4.10 LCS indicator */ NULL/*DE_SGSAP_SS_CODE*/, /* 9.4.19 SS code */ de_sgsap_serv_indic, /* 9.4.17 Service indicator */ NULL/*DE_SGSAP_UE_TZ*/, /* 9.4.21b UE Time Zone */ NULL/*DE_SGSAP_MSC_2*/, /* 9.4.14a Mobile Station Classmark 2 */ NULL/*DE_SGSAP_TAID*/, /* 9.4.21a Tracking Area Identity */ de_sgsap_ecgi, /* 9.4.3a E-UTRAN Cell Global Identity */ de_sgsap_ue_emm_mode, /* 9.4.21c UE EMM mode*/ de_sgsap_add_paging_ind, /* 9.4.25 Additional paging indicators */ NULL/*DE_SGSAP_TMSI_BASED_NRI_CONT */, /* 9.4.26 TMSI based NRI container (Reuse GSM_A_PDU_TYPE_GM, DE_NET_RES_ID_CONT */ de_sgsap_selected_cs_dmn_op, /* 9.4.27 Selected CS domain operator */ NULL, /* NONE */ }; /* MESSAGE FUNCTIONS */ /* * 8.1 SGsAP-ALERT-ACK message */ static void sgsap_alert_ack(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.2 SGsAP-ALERT-REJECT message */ static void sgsap_alert_rej(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* SGs Cause SGs cause 9.4.18 M TLV 3 */ ELEM_MAND_TLV(0x08, SGSAP_PDU_TYPE, DE_SGSAP_SGS_CAUSE, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.3 SGsAP-ALERT-REQUEST message */ static void sgsap_alert_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.4 SGsAP-DOWNLINK-UNITDATA message */ static void sgsap_dl_unitdata(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* NAS message container NAS message container 9.4.15 M TLV 4-253 */ ELEM_MAND_TLV(0x16, SGSAP_PDU_TYPE, DE_SGSAP_NAS_MSG_CONTAINER, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.5 SGsAP-EPS-DETACH-ACK message */ static void sgsap_eps_det_ack(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.6 SGsAP-EPS-DETACH-INDICATION message */ static void sgsap_eps_det_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* MME name MME name 9.4.13 M TLV 57 */ ELEM_MAND_TLV(0x09, SGSAP_PDU_TYPE, DE_SGSAP_MME_NAME, NULL, ei_sgsap_missing_mandatory_element); /* IMSI detach from EPS service type IMSI detach from EPS service type 9.4.7 M TLV 3 */ ELEM_MAND_TLV(0x10, SGSAP_PDU_TYPE, DE_SGSAP_IMSI_DET_EPS, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.7 SGsAP-IMSI-DETACH-ACK message */ static void sgsap_imsi_det_ack(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.8 SGsAP-IMSI-DETACH-INDICATION message */ static void sgsap_imsi_det_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* MME name MME name 9.4.13 M TLV 57 */ ELEM_MAND_TLV(0x09, SGSAP_PDU_TYPE, DE_SGSAP_MME_NAME, NULL, ei_sgsap_missing_mandatory_element); /* IMSI Detach from non-EPS service type IMSI detach from non-EPS service type 9.4.8 M TLV 3 */ ELEM_MAND_TLV(0x11, SGSAP_PDU_TYPE, DE_SGSAP_IMSI_DET_NON_EPS, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.9 SGsAP-LOCATION-UPDATE-ACCEPT message */ static void sgsap_imsi_loc_update_acc(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* Location area identifier Location area identifier 9.4.11 M TLV 7 */ ELEM_MAND_TLV(0x04, GSM_A_PDU_TYPE_COMMON, DE_LAI, NULL, ei_sgsap_missing_mandatory_element); /* New TMSI, or IMSI Mobile identity 9.4.14 O TLV 6-10 */ ELEM_OPT_TLV(0x0e, GSM_A_PDU_TYPE_COMMON, DE_MID, " - New TMSI, or IMSI"); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.10 SGsAP-LOCATION-UPDATE-REJECT message */ static void sgsap_imsi_loc_update_rej(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* Reject cause Reject cause 9.4.16 M TLV 3 */ ELEM_MAND_TLV(0x0f, GSM_A_PDU_TYPE_DTAP, DE_REJ_CAUSE, NULL, ei_sgsap_missing_mandatory_element); /* Location area identifier Location area identifier 9.4.11 O TLV 7 */ ELEM_OPT_TLV(0x04, GSM_A_PDU_TYPE_COMMON, DE_LAI, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.11 SGsAP-LOCATION-UPDATE-REQUEST message */ static void sgsap_imsi_loc_update_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* MME name MME name 9.4.13 M TLV 57 */ ELEM_MAND_TLV(0x09, SGSAP_PDU_TYPE, DE_SGSAP_MME_NAME, NULL, ei_sgsap_missing_mandatory_element); /* EPS location update type EPS location update type 9.4.2 M TLV 3 */ ELEM_MAND_TLV(0x0a, SGSAP_PDU_TYPE, DE_SGSAP_EPS_LOC_UPD_TYPE, NULL, ei_sgsap_missing_mandatory_element); /* New location area identifier Location area identifier 9.4.11 M TLV 7 */ ELEM_MAND_TLV(0x04, GSM_A_PDU_TYPE_COMMON, DE_LAI, NULL, ei_sgsap_missing_mandatory_element); /* Old location area identifier Location area identifier 9.4.11 O TLV 7 */ ELEM_OPT_TLV(0x04, GSM_A_PDU_TYPE_COMMON, DE_LAI, " - Old location area identifier"); /* TMSI status TMSI status 9.4.21 O TLV 3 */ ELEM_OPT_TLV( 0x07 , GSM_A_PDU_TYPE_GM, DE_TMSI_STAT , NULL ); /* IMEISV IMEISV 9.4.5 O TLV 10 */ ELEM_OPT_TLV(0x15, SGSAP_PDU_TYPE, DE_SGSAP_IMEISV, NULL); /* TAI Tracking Area Identity 9.4.21a O TLV 7 */ ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, NULL); /* E-CGI E-UTRAN Cell Global Identity 9.4.3a O TLV 9 */ ELEM_OPT_TLV(0x24, SGSAP_PDU_TYPE, DE_SGSAP_ECGI, NULL); /* TMSI based NRI container TMSI based NRI container 9.4.26 O TLV 4 */ ELEM_OPT_TLV(0x27, GSM_A_PDU_TYPE_GM, DE_NET_RES_ID_CONT, " - TMSI based NRI container"); /* Selected CS domain operator Selected CS domain operator 9.4.27 O TLV 5 */ ELEM_OPT_TLV(0x28, SGSAP_PDU_TYPE, DE_SGSAP_SELECTED_CS_DMN_OP, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.12 SGsAP-MM-INFORMATION-REQUEST */ static void sgsap_mm_info_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* MM information MM information 9.4.12 M TLV 3-n */ ELEM_MAND_TLV(0x17, SGSAP_PDU_TYPE, DE_SGSAP_MM_INFO, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.13 SGsAP-PAGING-REJECT message */ static void sgsap_paging_rej(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* SGs Cause SGs Cause 9.4.18 M TLV 3 */ ELEM_MAND_TLV(0x08, SGSAP_PDU_TYPE, DE_SGSAP_SGS_CAUSE, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.14 SGsAP-PAGING-REQUEST message */ static void sgsap_paging_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* VLR name VLR name 9.4.22 M TLV 3-n */ ELEM_MAND_TLV(0x02, SGSAP_PDU_TYPE, DE_SGSAP_VLR_NAME, NULL, ei_sgsap_missing_mandatory_element); /* Service indicator Service indicator 9.4.17 M TLV 3 */ ELEM_MAND_TLV(0x20, SGSAP_PDU_TYPE, DE_SGSAP_SERV_INDIC, NULL, ei_sgsap_missing_mandatory_element); /* TMSI TMSI 9.4.20 O TLV 6 */ ELEM_OPT_TLV(0x03, GSM_A_PDU_TYPE_BSSMAP, BE_TMSI, NULL); /* CLI CLI 9.4.1 O TLV 3-14 */ ELEM_OPT_TLV(0x1c, GSM_A_PDU_TYPE_DTAP, DE_CLG_PARTY_BCD_NUM, " - CLI"); /* Location area identifier Location area identifier 9.4.11 O TLV 7 */ ELEM_OPT_TLV(0x04, GSM_A_PDU_TYPE_COMMON, DE_LAI, NULL); /* Global CN-Id Global CN-Id 9.4.4 O TLV 7 */ ELEM_OPT_TLV(0x0b, SGSAP_PDU_TYPE, DE_SGSAP_GLOBAL_CN_ID, NULL); /* SS code SS code 9.4.19 O TLV 3 */ ELEM_OPT_TLV(0x1f, NAS_PDU_TYPE_EMM, DE_EMM_SS_CODE, NULL); /* LCS indicator LCS indicator 9.4.10 O TLV 3 */ ELEM_OPT_TLV(0x1e, SGSAP_PDU_TYPE, DE_SGSAP_LCS_INDIC, NULL); /* LCS client identity LCS client identity 9.4.9 O TLV 3-n */ ELEM_OPT_TLV(0x1d, NAS_PDU_TYPE_EMM, DE_EMM_LCS_CLIENT_ID, NULL); /* Channel needed Channel needed 9.4.23 O TLV 3 */ ELEM_OPT_TLV(0x05, GSM_A_PDU_TYPE_BSSMAP, BE_CHAN_NEEDED, NULL); /* eMLPP Priority eMLPP Priority 9.4.24 O TLV 3 */ ELEM_OPT_TLV(0x06, GSM_A_PDU_TYPE_BSSMAP, BE_EMLPP_PRIO, NULL); /* Additional paging indicators Additional paging indicators 9.4.25 O TLV 3 */ ELEM_OPT_TLV(0x26, SGSAP_PDU_TYPE, DE_SGSAP_ADD_PAGING_IND, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.15 SGsAP-RESET-ACK message */ static void sgsap_reset_ack(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* MME name MME name 9.4.13 C TLV 57 */ ELEM_OPT_TLV(0x09, SGSAP_PDU_TYPE, DE_SGSAP_MME_NAME, NULL); /* VLR name VLR name 9.4.22 C TLV 3-n */ ELEM_OPT_TLV(0x02, SGSAP_PDU_TYPE, DE_SGSAP_VLR_NAME, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.16 SGsAP-RESET-INDICATION message */ static void sgsap_reset_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* MME name MME name 9.4.13 C TLV 57 */ ELEM_OPT_TLV(0x09, SGSAP_PDU_TYPE, DE_SGSAP_MME_NAME, NULL); /* VLR name VLR name 9.4.22 C TLV 3-n */ ELEM_OPT_TLV(0x02, SGSAP_PDU_TYPE, DE_SGSAP_VLR_NAME, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.17 SGsAP-SERVICE-REQUEST message */ static void sgsap_service_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /*IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* Service indicator Service indicator 9.4.17 M TLV 3 */ ELEM_MAND_TLV(0x20, SGSAP_PDU_TYPE, DE_SGSAP_SERV_INDIC, NULL, ei_sgsap_missing_mandatory_element); /* IMEISV IMEISV 9.4.5 O TLV 10 */ ELEM_OPT_TLV(0x15, SGSAP_PDU_TYPE, DE_SGSAP_IMEISV, NULL); /* UE Time Zone UE Time Zone 9.4.21b O TLV 3 */ ELEM_OPT_TLV(0x21, GSM_A_PDU_TYPE_DTAP, DE_TIME_ZONE, " - UE Time Zone"); /* Mobile Station Classmark 2 Mobile Station Classmark 2 9.4.14a O TLV 5 */ ELEM_OPT_TLV(0x22 , GSM_A_PDU_TYPE_COMMON, DE_MS_CM_2, NULL); /* TAI Tracking Area Identity 9.4.21a O TLV 7 */ ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, NULL); /* E-CGI E-UTRAN Cell Global Identity 9.4.3a O TLV 9 */ ELEM_OPT_TLV(0x24, SGSAP_PDU_TYPE, DE_SGSAP_ECGI, NULL); /* UE EMM Mode UE EMM mode 9.4.21c O TLV 3 */ ELEM_OPT_TLV(0x25, SGSAP_PDU_TYPE, DE_SGSAP_UE_EMM_MODE, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.18 SGsAP-STATUS message */ static void sgsap_status(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 O TLV 6-10 */ ELEM_OPT_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL); /* SGs cause SGs cause 9.4.18 M TLV 3 */ ELEM_MAND_TLV(0x08, SGSAP_PDU_TYPE, DE_SGSAP_SGS_CAUSE, NULL, ei_sgsap_missing_mandatory_element); /* Erroneous message Erroneous message 9.4.3 M TLV 3-n */ ELEM_OPT_TLV(0x1b, SGSAP_PDU_TYPE, DE_SGSAP_ERR_MSG, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.19 SGsAP-TMSI-REALLOCATION-COMPLETE message */ static void sgsap_tmsi_realloc_comp(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /*IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.20 SGsAP-UE-ACTIVITY-INDICATION message */ static void sgsap_ue_act_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.21 SGsAP-UE-UNREACHABLE message */ static void sgsap_ue_unreachable(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* SGs cause SGs cause 9.4.18 M TLV 3 */ ELEM_MAND_TLV(0x08, SGSAP_PDU_TYPE, DE_SGSAP_SGS_CAUSE, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.22 SGsAP-UPLINK-UNITDATA message */ static void sgsap_ue_ul_unitdata(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* NAS message container NAS message container 9.4.15 M TLV 4-253 */ ELEM_MAND_TLV(0x16, SGSAP_PDU_TYPE, DE_SGSAP_NAS_MSG_CONTAINER, NULL, ei_sgsap_missing_mandatory_element); /* IMEISV IMEISV 9.4.5 O TLV 10 */ ELEM_OPT_TLV(0x15, SGSAP_PDU_TYPE, DE_SGSAP_IMEISV, NULL); /* UE Time Zone UE Time Zone 9.4.21b O TLV 3 */ ELEM_OPT_TLV(0x21, GSM_A_PDU_TYPE_DTAP, DE_TIME_ZONE, " - UE Time Zone"); /* Mobile Station Classmark 2 Mobile Station Classmark 2 9.4.14a O TLV 5 */ ELEM_OPT_TLV(0x22 , GSM_A_PDU_TYPE_COMMON, DE_MS_CM_2, NULL); /* TAI Tracking Area Identity 9.4.21a O TLV 7 */ ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, NULL); /* E-CGI E-UTRAN Cell Global Identity 9.4.3a O TLV 9 */ ELEM_OPT_TLV(0x24, SGSAP_PDU_TYPE, DE_SGSAP_ECGI, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.23 SGsAP-RELEASE-REQUEST message */ static void sgsap_release_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* SGs cause SGs cause 9.4.18 O TLV 3 */ ELEM_OPT_TLV(0x08, SGSAP_PDU_TYPE, DE_SGSAP_SGS_CAUSE, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.24 SGsAP-SERVICE-ABORT-REQUEST message */ static void sgsap_service_abort_req(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 8.25 SGsAP-MO-CSFB-INDICATION message */ static void sgsap_mo_csfb_ind(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) { uint32_t curr_offset; uint32_t consumed; unsigned curr_len; curr_offset = offset; curr_len = len; /* IMSI IMSI 9.4.6 M TLV 6-10 */ ELEM_MAND_TLV(0x01, GSM_A_PDU_TYPE_BSSMAP, BE_IMSI, NULL, ei_sgsap_missing_mandatory_element); /* TAI Tracking Area Identity 9.4.21a O TLV 7 */ ELEM_OPT_TLV(0x23, NAS_PDU_TYPE_EMM, DE_EMM_TRAC_AREA_ID, NULL); /* E-CGI E-UTRAN Cell Global Identity 9.4.3a O TLV 9 */ ELEM_OPT_TLV(0x24, SGSAP_PDU_TYPE, DE_SGSAP_ECGI, NULL); EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_sgsap_extraneous_data); } /* * 9.2 Message type */ static const value_string sgsap_msg_strings[] = { { 0x01, "SGsAP-PAGING-REQUEST"}, /* 8.14 */ { 0x02, "SGsAP-PAGING-REJECT"}, /* 8.13 */ /* * 0 0 0 0 0 0 1 1 * to * 0 0 0 0 0 1 0 1 * Unassigned: treated as an unknown Message type */ { 0x03, "Unassigned"}, /* 7 */ { 0x04, "Unassigned"}, /* 7 */ { 0x05, "Unassigned"}, /* 7 */ { 0x06, "SGsAP-SERVICE-REQUEST"}, /* 8.17 */ { 0x07, "SGsAP-DOWNLINK-UNITDATA"}, /* 8.4 */ { 0x08, "SGsAP-UPLINK-UNITDATA"}, /* 8.22 */ { 0x09, "SGsAP-LOCATION-UPDATE-REQUEST"}, /* 8.11 */ { 0x0a, "SGsAP-LOCATION-UPDATE-ACCEPT"}, /* 8.9 */ { 0x0b, "SGsAP-LOCATION-UPDATE-REJECT"}, /* 8.10 */ { 0x0c, "SGsAP-TMSI-REALLOCATION-COMPLETE"}, /* 8.19 */ { 0x0d, "SGsAP-ALERT-REQUEST"}, /* 8.3 */ { 0x0e, "SGsAP-ALERT-ACK"}, /* 8.1 */ { 0x0f, "SGsAP-ALERT-REJECT"}, /* 8.2 */ { 0x10, "SGsAP-UE-ACTIVITY-INDICATION"}, /* 8.20 */ { 0x11, "SGsAP-EPS-DETACH-INDICATION"}, /* 8.6 */ { 0x12, "SGsAP-EPS-DETACH-ACK"}, /* 8.5 */ { 0x13, "SGsAP-IMSI-DETACH-INDICATION"}, /* 8.8 */ { 0x14, "SGsAP-IMSI-DETACH-ACK"}, /* 8.7 */ { 0x15, "SGsAP-RESET-INDICATION"}, /* 8.16 */ { 0x16, "SGsAP-RESET-ACK"}, /* 8.15 */ { 0x17, "SGsAP-SERVICE-ABORT-REQUEST"}, /* 8.24 */ { 0x18, "SGsAP-MO-CSFB-INDICATION"}, /* 8.25 */ /* * 0 0 0 1 1 0 0 0 * to * 0 0 0 1 1 0 0 1 * Unassigned: treated as an unknown Message type */ { 0x19, "Unassigned"}, { 0x1a, "SGsAP-MM-INFORMATION-REQUEST"}, /* 8.12 */ { 0x1b, "SGsAP-RELEASE-REQUEST"}, /* 8.23 */ /* * 0 0 0 1 1 1 0 0 Unassigned: treated as an unknown Message type 7 */ { 0x1c, "Unassigned"}, /* 7 */ { 0x1d, "SGsAP-STATUS"}, /* 8.18 */ { 0x1e, "Unassigned"}, /* 7 */ { 0x1f, "SGsAP-UE-UNREACHABLE"}, /* 8.21 */ { 0, NULL } }; static value_string_ext sgsap_msg_strings_ext = VALUE_STRING_EXT_INIT(sgsap_msg_strings); #define NUM_SGSAP_MSG array_length(sgsap_msg_strings) static int ett_sgsap_msg[NUM_SGSAP_MSG]; static void (*sgsap_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, uint32_t offset, unsigned len) = { sgsap_paging_req, /* 0x01, "SGsAP-PAGING-REQUEST" 8.14 */ sgsap_paging_rej, /* 0x02, "SGsAP-PAGING-REJECT" 8.13 */ /* * 0 0 0 0 0 0 1 1 * to * 0 0 0 0 0 1 0 1 * Unassigned: treated as an unknown Message type */ NULL, /* 0x03, "Unassigned" 7 */ NULL, /* 0x04, "Unassigned" 7 */ NULL, /* 0x05, "Unassigned" 7 */ sgsap_service_req, /* 0x06, "SGsAP-SERVICE-REQUEST" 8.17 */ sgsap_dl_unitdata, /* 0x07, "SGsAP-DOWNLINK-UNITDATA" 8.4 */ sgsap_ue_ul_unitdata, /* 0x08, "SGsAP-UPLINK-UNITDATA" 8.22 */ sgsap_imsi_loc_update_req, /* 0x09, "SGsAP-LOCATION-UPDATE-REQUEST" 8.11 */ sgsap_imsi_loc_update_acc, /* 0x0a, "SGsAP-LOCATION-UPDATE-ACCEPT" 8.9 */ sgsap_imsi_loc_update_rej, /* 0x0b, "SGsAP-LOCATION-UPDATE-REJECT" 8.10 */ sgsap_tmsi_realloc_comp, /* 0x0c, "SGsAP-TMSI-REALLOCATION-COMPLETE" 8.19 */ sgsap_alert_req, /* 0x0d, "SGsAP-ALERT-REQUEST" 8.3 */ sgsap_alert_ack, /* 0x0e, "SGsAP-ALERT-ACK" 8.1 */ sgsap_alert_rej, /* 0x0f, "SGsAP-ALERT-REJECT" 8.2 */ sgsap_ue_act_ind, /* 0x10, "SGsAP-UE-ACTIVITY-INDICATION" 8.20 */ sgsap_eps_det_ind, /* 0x11, "SGsAP-EPS-DETACH-INDICATION" 8.6 */ sgsap_eps_det_ack, /* 0x12, "SGsAP-EPS-DETACH-ACK" 8.5 */ sgsap_imsi_det_ind, /* 0x13, "SGsAP-IMSI-DETACH-INDICATION" 8.8 */ sgsap_imsi_det_ack, /* 0x14, "SGsAP-IMSI-DETACH-ACK" 8.7 */ sgsap_reset_ind, /* 0x15, "SGsAP-RESET-INDICATION" 8.16 */ sgsap_reset_ack, /* 0x16, "SGsAP-RESET-ACK" 8.15 */ sgsap_service_abort_req, /* 0x17, "SGsAP-SERVICE-ABORT-REQUEST" 8.24 */ sgsap_mo_csfb_ind, /* 0x18, "SGsAP-MO-CSFB-INDICATION" 8.25 */ /* * 0 0 0 1 1 0 0 1 * to * 0 0 0 1 1 0 0 1 * Unassigned: treated as an unknown Message type */ NULL, /* 0x19, "Unassigned" */ sgsap_mm_info_req, /* 0x1a, "SGsAP-MM-INFORMATION-REQUEST" 8.12 */ sgsap_release_req, /* 0x1b, "SGsAP-RELEASE-REQUEST" 8.23 */ /* * 0 0 0 1 1 1 0 0 Unassigned: treated as an unknown Message type 7 */ NULL, /* 0x1c, "Unassigned" */ sgsap_status, /* 0x1d, "SGsAP-STATUS" 8.18 */ NULL, /* 0x1e, "Unassigned" */ sgsap_ue_unreachable, /* 0x1f, "SGsAP-UE-UNREACHABLE" 8.21 */ NULL, /* NONE */ }; static void get_sgsap_msg_params(uint8_t oct, const char **msg_str, int *ett_tree, int *hf_idx, msg_fcn *msg_fcn_p) { int idx; *msg_str = try_val_to_str_idx_ext((uint32_t) (oct & 0xff), &sgsap_msg_strings_ext, &idx); *hf_idx = hf_sgsap_msg_type; if (*msg_str != NULL) { *ett_tree = ett_sgsap_msg[idx]; *msg_fcn_p = sgsap_msg_fcn[idx]; } return; } static int dissect_sgsap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *item; proto_tree *sgsap_tree; int offset = 0; uint32_t len; const char *msg_str; int ett_tree; int hf_idx; void (*msg_fcn_p)(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, uint32_t offset, unsigned len); uint8_t oct; len = tvb_reported_length(tvb); /* Make entry in the Protocol column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, PSNAME); item = proto_tree_add_item(tree, proto_sgsap, tvb, 0, -1, ENC_NA); sgsap_tree = proto_item_add_subtree(item, ett_sgsap); /* Message type IE*/ oct = tvb_get_uint8(tvb, offset); msg_fcn_p = NULL; ett_tree = -1; hf_idx = -1; msg_str = NULL; get_sgsap_msg_params(oct, &msg_str, &ett_tree, &hf_idx, &msg_fcn_p); if (msg_str) { col_add_str(pinfo->cinfo, COL_INFO, msg_str); }else{ proto_tree_add_item(tree, hf_sgsap_unknown_msg, tvb, offset, 1, ENC_BIG_ENDIAN); return tvb_captured_length(tvb); } /* * Add SGSAP message name */ proto_tree_add_item(sgsap_tree, hf_idx, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; /* * decode elements */ if (msg_fcn_p == NULL) { proto_tree_add_item(sgsap_tree, hf_sgsap_message_elements, tvb, offset, len - offset, ENC_NA); } else { (*msg_fcn_p)(tvb, sgsap_tree, pinfo, offset, len - offset); } return tvb_captured_length(tvb); } void proto_register_sgsap(void) { unsigned i; unsigned last_offset; /* List of fields */ static hf_register_info hf[] = { { &hf_sgsap_msg_type, { "SGSAP Message Type", "sgsap.msg_type", FT_UINT8, BASE_HEX|BASE_EXT_STRING, &sgsap_msg_strings_ext, 0x0, NULL, HFILL } }, { &hf_sgsap_elem_id, { "Element ID", "sgsap.elem_id", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_sgsap_eps_location_update_type, { "EPS location update type", "sgsap.eps_location_update_type", FT_UINT8, BASE_DEC, VALS(sgsap_eps_location_update_type_values), 0x0, NULL, HFILL } }, { &hf_sgsap_service_indicator_value, { "Service indicator", "sgsap.service_indicator", FT_UINT8, BASE_DEC, VALS(sgsap_service_indicator_values), 0x0, NULL, HFILL } }, { &hf_sgsap_sgs_cause, { "SGs cause", "sgsap.sgs_cause", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &sgsap_sgs_cause_values_ext, 0x0, NULL, HFILL } }, { &hf_sgsap_ue_emm_mode, { "UE EMM mode", "sgsap.ue_emm_mode", FT_UINT8, BASE_DEC, VALS(sgsap_ue_emm_mode_values), 0x0, NULL, HFILL } }, { &hf_sgsap_eci, {"ECI (E-UTRAN Cell Identifier)", "sgsap.eci", FT_UINT32, BASE_DEC, NULL, 0x0fffffff, NULL, HFILL} }, { &hf_sgsap_cn_id, {"CN_ID", "sgsap.cn_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL} }, { &hf_sgsap_imsi_det_eps, { "IMSI detach from EPS service type", "sgsap.imsi_det_eps", FT_UINT8, BASE_DEC, VALS(sgsap_imsi_det_from_eps_serv_type_values), 0x0, NULL, HFILL } }, { &hf_sgsap_imsi_det_non_eps, { "IMSI detach from non-EPS service type", "sgsap.imsi_det_non_eps", FT_UINT8, BASE_DEC, VALS(sgsap_imsi_det_from_non_eps_serv_type_values), 0x0, NULL, HFILL } }, { &hf_sgsap_lcs_indic, { "LCS indicator", "sgsap.lcs_indicator", FT_UINT8, BASE_DEC, VALS(sgsap_lcs_indic_values), 0x0, NULL, HFILL } }, { &hf_sgsap_mme_name, {"MME name", "sgsap.mme_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL} }, { &hf_sgsap_vlr_name, {"VLR name", "sgsap.vlr_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL} }, { &hf_sgsap_imeisv, {"IMEISV", "sgsap.imeisv", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL} }, { &hf_sgsap_unknown_msg, { "Unknown message", "sgsap.unknown_msg", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_sgsap_message_elements, {"Message Elements", "sgsap.message_elements", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL} }, { &hf_sgsap_csri, {"CS restoration indicator (CSRI)", "sgsap.csri", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01, NULL, HFILL } }, { &hf_sgsap_sel_cs_dmn_op, { "Selected CS domain operator", "sgsap.sel_cs_dmn_op", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } }, }; static ei_register_info ei[] = { { &ei_sgsap_extraneous_data, { "sgsap.extraneous_data", PI_PROTOCOL, PI_NOTE, "Extraneous Data, dissector bug or later version spec(report to wireshark.org)", EXPFILL }}, { &ei_sgsap_missing_mandatory_element, { "sgsap.missing_mandatory_element", PI_PROTOCOL, PI_WARN, "Missing Mandatory element, rest of dissection is suspect", EXPFILL }}, }; expert_module_t* expert_sgsap; /* Setup protocol subtree array */ #define NUM_INDIVIDUAL_ELEMS 2 int *ett[NUM_INDIVIDUAL_ELEMS + NUM_SGSAP_ELEM + NUM_SGSAP_MSG]; ett[0] = &ett_sgsap; ett[1] = &ett_sgsap_sel_cs_dmn_op; last_offset = NUM_INDIVIDUAL_ELEMS; for (i=0; i < NUM_SGSAP_ELEM; i++, last_offset++) { ett[last_offset] = &ett_sgsap_elem[i]; } for (i=0; i < NUM_SGSAP_MSG; i++, last_offset++) { ett[last_offset] = &ett_sgsap_msg[i]; } /* Register protocol */ proto_sgsap = proto_register_protocol(PNAME, PSNAME, PFNAME); /* Register fields and subtrees */ proto_register_field_array(proto_sgsap, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_sgsap = expert_register_protocol(proto_sgsap); expert_register_field_array(expert_sgsap, ei, array_length(ei)); /* Register dissector */ sgsap_handle = register_dissector(PFNAME, dissect_sgsap, proto_sgsap); /* sgsap_module = prefs_register_protocol(proto_sgsap, NULL); */ } void proto_reg_handoff_sgsap(void) { /* The registered SCTP port number for SGsAP is 29118. * The payload protocol identifier to be used for SGsAP is 0. */ gsm_a_dtap_handle = find_dissector_add_dependency("gsm_a_dtap", proto_sgsap); dissector_add_uint_range_with_preference("sctp.port", SGSAP_SCTP_PORT_RANGE, sgsap_handle); } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */