/* packet-q933.c * Routines for Q.933 frame disassembly * Guy Harris * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #include #include "packet-juniper.h" void proto_register_q933(void); void proto_reg_handoff_q933(void); static int proto_q933 = -1; static int hf_q933_discriminator = -1; static int hf_q933_coding_standard = -1; static int hf_q933_information_transfer_capability = -1; static int hf_q933_transfer_mode = -1; static int hf_q933_uil1 = -1; static int hf_q933_call_ref_len = -1; static int hf_q933_call_ref_flag = -1; static int hf_q933_call_ref = -1; static int hf_q933_message_type = -1; static int hf_q933_cause_location = -1; static int hf_q933_cause_value = -1; static int hf_q933_number_type = -1; static int hf_q933_numbering_plan = -1; static int hf_q933_extension_ind = -1; static int hf_q933_calling_party_number = -1; static int hf_q933_called_party_number = -1; static int hf_q933_connected_number = -1; /* static int hf_q933_redirecting_number = -1; */ static int hf_q933_screening_ind = -1; static int hf_q933_presentation_ind = -1; static int hf_q933_report_type = -1; static int hf_q933_link_verf_txseq = -1; static int hf_q933_link_verf_rxseq = -1; static int hf_q933_data = -1; /* Generated from convert_proto_tree_add_text.pl */ static int hf_q933_user_information_layer_3_protocol = -1; static int hf_q933_additional_layer_3_protocol_information = -1; static int hf_q933_network_identification_plan = -1; static int hf_q933_map_element_type = -1; static int hf_q933_channel_type = -1; static int hf_q933_channel_indicated_by = -1; static int hf_q933_extended_audiovisual_characteristics_id = -1; static int hf_q933_location = -1; static int hf_q933_subaddress = -1; static int hf_q933_type_of_network_identification = -1; static int hf_q933_address_inclusion = -1; static int hf_q933_odd_even_indicator = -1; static int hf_q933_reverse_charging_indication = -1; static int hf_q933_call_state = -1; static int hf_q933_user_information_layer_2_protocol = -1; static int hf_q933_packet_window_size = -1; static int hf_q933_locking_shift_to_codeset = -1; static int hf_q933_non_locking_shift_to_codeset = -1; static int hf_q933_not_first_segment = -1; static int hf_q933_user_rate = -1; static int hf_q933_indicated_channel_required = -1; static int hf_q933_high_layer_characteristics_identification = -1; static int hf_q933_rejection_reason = -1; static int hf_q933_progress_description = -1; static int hf_q933_parity = -1; static int hf_q933_extended_high_layer_characteristics_id = -1; static int hf_q933_dlci = -1; static int hf_q933_recommendation = -1; static int hf_q933_mode = -1; static int hf_q933_user_information_str = -1; static int hf_q933_network_service = -1; static int hf_q933_interface_basic = -1; static int hf_q933_missing_information_element = -1; static int hf_q933_information_element = -1; static int hf_q933_condition_normal = -1; static int hf_q933_not_channel_selection = -1; static int hf_q933_network_identification_length = -1; static int hf_q933_segmented_message_type = -1; static int hf_q933_diagnostic = -1; static int hf_q933_user_specified_layer_2_protocol_information = -1; static int hf_q933_interface_identified = -1; static int hf_q933_network_specific_facility_specification = -1; static int hf_q933_data_bits = -1; static int hf_q933_default_packet_size = -1; static int hf_q933_insufficient_information_element = -1; static int hf_q933_modem_type = -1; static int hf_q933_user_information_bytes = -1; static int hf_q933_multiple_frame_establishment = -1; static int hf_q933_duplex = -1; static int hf_q933_mode_of_operation = -1; static int hf_q933_condition = -1; static int hf_q933_status = -1; static int hf_q933_repeat_indicator = -1; static int hf_q933_confirmation = -1; static int hf_q933_default_packet_size_0F = -1; static int hf_q933_interface_identifier = -1; static int hf_q933_stop_bits = -1; static int hf_q933_indicated_channel_d_channel = -1; static int hf_q933_channel_selection = -1; static int hf_q933_user_specific_diagnostic = -1; static int hf_q933_timer = -1; static int hf_q933_first_segment = -1; static int hf_q933_network_identification = -1; static int hf_q933_out_band_negotiation = -1; static int hf_q933_layer_1 = -1; static int hf_q933_type_of_subaddress = -1; static int hf_q933_protocol_discriminator = -1; static int hf_q933_rate_adaption_header = -1; static int hf_q933_reason_for_redirection = -1; static int hf_q933_length = -1; static int hf_q933_diagnostics = -1; static int hf_q933_display_information = -1; static int hf_q933_cumulative_transit_delay = -1; static int hf_q933_requested_end_to_end_transit_delay = -1; static int hf_q933_max_end_to_end_transit_delay = -1; static int hf_q933_transit_delay = -1; static int hf_q933_request = -1; static gint ett_q933 = -1; static gint ett_q933_ie = -1; static expert_field ei_q933_invalid_length = EI_INIT; static expert_field ei_q933_information_element = EI_INIT; static dissector_handle_t q933_handle; /* * Q.933 message types. */ #define Q933_ESCAPE 0x00 #define Q933_ALERTING 0x01 #define Q933_CALL_PROCEEDING 0x02 #define Q933_CONNECT 0x07 #define Q933_CONNECT_ACK 0x0F #define Q933_PROGRESS 0x03 #define Q933_SETUP 0x05 #define Q933_DISCONNECT 0x45 #define Q933_RELEASE 0x4D #define Q933_RELEASE_COMPLETE 0x5A #define Q933_SEGMENT 0x60 #define Q933_STATUS 0x7D #define Q933_STATUS_ENQUIRY 0x75 static const value_string q933_message_type_vals[] = { { Q933_ESCAPE, "ESCAPE" }, { Q933_ALERTING, "ALERTING" }, { Q933_CALL_PROCEEDING, "CALL PROCEEDING" }, { Q933_CONNECT, "CONNECT" }, { Q933_CONNECT_ACK, "CONNECT ACKNOWLEDGE" }, { Q933_PROGRESS, "PROGRESS" }, { Q933_SETUP, "SETUP" }, { Q933_DISCONNECT, "DISCONNECT" }, { Q933_RELEASE, "RELEASE" }, { Q933_RELEASE_COMPLETE, "RELEASE COMPLETE" }, { Q933_SEGMENT, "SEGMENT" }, { Q933_STATUS, "STATUS" }, { Q933_STATUS_ENQUIRY, "STATUS ENQUIRY" }, { 0, NULL } }; static const true_false_string tfs_call_ref_flag = { "Message sent to originating side", "Message sent from originating side" }; /* * Information elements. */ /* Shifted codeset values */ #define CS0 0x000 #define CS1 0x100 #define CS2 0x200 #define CS3 0x300 #define CS4 0x400 #define CS5 0x500 #define CS6 0x600 #define CS7 0x700 #define Q933_IE_SO_MASK 0x80 /* single-octet/variable-length mask */ /* * Single-octet IEs. */ #define Q933_IE_SO_IDENTIFIER_MASK 0xf0 /* IE identifier mask */ #define Q933_IE_SO_IDENTIFIER_SHIFT 4 /* IE identifier shift */ #define Q933_IE_SO_IE_MASK 0x0F /* IE mask */ #define Q933_IE_SHIFT 0x90 #define Q933_IE_SHIFT_NON_LOCKING 0x08 /* non-locking shift */ #define Q933_IE_SHIFT_CODESET 0x07 /* codeset */ #define Q933_IE_REPEAT_INDICATOR 0xD0 /* * Variable-length IEs. */ #define Q933_IE_VL_EXTENSION 0x80 /* Extension flag */ /* extension bit. The bit value "0" indicates that the octet continues through the */ /* next octet. The bit value "1" indicates that this octet is the last octet */ static const true_false_string q933_extension_ind_value = { "last octet", "information continues through the next octet", }; /* * Codeset 0 (default). */ #define Q933_IE_SEGMENTED_MESSAGE 0x00 #define Q933_IE_BEARER_CAPABILITY 0x04 #define Q933_IE_CAUSE 0x08 #define Q933_IE_CALL_STATE 0x14 #define Q933_IE_CHANNEL_IDENTIFICATION 0x18 #define Q933_IE_DLCI 0x19 #define Q933_IE_PROGRESS_INDICATOR 0x1E #define Q933_IE_NETWORK_SPECIFIC_FACIL 0x20 /* Network Specific Facilities */ #define Q933_IE_DISPLAY 0x28 #define Q933_IE_E2E_TRANSIT_DELAY 0x42 /* End-to-end Transit Delay */ #define Q933_IE_TD_SELECTION_AND_INT 0x43 /* Transit Delay Selection and Indication */ #define Q933_IE_PL_BINARY_PARAMETERS 0x44 /* Packet layer binary parameters */ #define Q933_IE_LL_CORE_PARAMETERS 0x48 /* Link layer core parameters */ #define Q933_IE_LL_PROTOCOL_PARAMETERS 0x49 /* Link layer protocol parameters */ #define Q933_IE_REVERSE_CHARGE_IND 0x4A /* Reverse charging indication */ #define Q933_IE_CONNECTED_NUMBER 0x4C /* Connected Number */ #define Q933_IE_CONNECTED_SUBADDR 0x4D /* Connected sub-address */ #define Q933_IE_X_213_PRIORITY 0x50 /* X.213 priority */ #define Q933_IE_REPORT_TYPE 0x51 #define Q933_IE_LINK_INTEGRITY_VERF 0x53 /* Link integrity verification */ #define Q933_IE_PVC_STATUS 0x57 #define Q933_IE_CALLING_PARTY_NUMBER 0x6C /* Calling Party Number */ #define Q933_IE_CALLING_PARTY_SUBADDR 0x6D /* Calling Party Subaddress */ #define Q933_IE_CALLED_PARTY_NUMBER 0x70 /* Called Party Number */ #define Q933_IE_CALLED_PARTY_SUBADDR 0x71 /* Called Party Subaddress */ #define Q933_IE_TRANSIT_NETWORK_SEL 0x78 /* Transit Network Selection */ #define Q933_IE_LOW_LAYER_COMPAT 0x7C /* Low-Layer Compatibility */ #define Q933_IE_HIGH_LAYER_COMPAT 0x7D /* High-Layer Compatibility */ #define Q933_IE_USER_USER 0x7E /* User-User */ #define Q933_IE_ESCAPE 0x7F /* Escape for extension */ /* Codeset 0 */ static const value_string q933_info_element_vals0[] = { { Q933_IE_SEGMENTED_MESSAGE, "Segmented message" }, { Q933_IE_BEARER_CAPABILITY, "Bearer capability" }, { Q933_IE_CAUSE, "Cause" }, { Q933_IE_CALL_STATE, "Call state" }, { Q933_IE_CHANNEL_IDENTIFICATION, "Channel identification" }, { Q933_IE_DLCI, "Data link connection identifier" }, { Q933_IE_PROGRESS_INDICATOR, "Progress indicator" }, { Q933_IE_NETWORK_SPECIFIC_FACIL, "Network specific facilities" }, { Q933_IE_E2E_TRANSIT_DELAY, "End-to-end transit delay" }, { Q933_IE_TD_SELECTION_AND_INT, "Transit delay selection and indication" }, { Q933_IE_PL_BINARY_PARAMETERS, "Packet layer binary parameters" }, { Q933_IE_LL_CORE_PARAMETERS, "Link layer core parameters" }, { Q933_IE_LL_PROTOCOL_PARAMETERS, "Link layer protocol parameters" }, { Q933_IE_REVERSE_CHARGE_IND, "Reverse charging indication" }, { Q933_IE_CONNECTED_NUMBER, "Connected number" }, { Q933_IE_CONNECTED_SUBADDR, "Connected subaddress" }, { Q933_IE_X_213_PRIORITY, "X.213 priority" }, { Q933_IE_REPORT_TYPE, "Report type" }, { Q933_IE_LINK_INTEGRITY_VERF, "Link integrity verification" }, { Q933_IE_PVC_STATUS, "PVC status" }, { Q933_IE_CALLING_PARTY_NUMBER, "Calling party number" }, { Q933_IE_CALLING_PARTY_SUBADDR, "Calling party subaddress" }, { Q933_IE_CALLED_PARTY_NUMBER, "Called party number" }, { Q933_IE_CALLED_PARTY_SUBADDR, "Called party subaddress" }, { Q933_IE_TRANSIT_NETWORK_SEL, "Transit network selection" }, { Q933_IE_LOW_LAYER_COMPAT, "Low-layer compatibility" }, { Q933_IE_HIGH_LAYER_COMPAT, "High-layer compatibility" }, { Q933_IE_USER_USER, "User-user" }, { Q933_IE_ESCAPE, "Escape" }, { 0, NULL } }; /* Codeset 1 */ static const value_string q933_info_element_vals1[] = { { 0, NULL } }; /* Codeset 2 */ static const value_string q933_info_element_vals2[] = { { 0, NULL } }; /* Codeset 3 */ static const value_string q933_info_element_vals3[] = { { 0, NULL } }; /* Codeset 4 */ static const value_string q933_info_element_vals4[] = { { 0, NULL } }; /* Codeset 5 */ #define Q933_IE_ANSI_REPORT_TYPE 0x01 #define Q933_IE_ANSI_LINK_INTEGRITY_VERF 0x03 #define Q933_IE_ANSI_PVC_STATUS 0x07 /* Codeset 5 */ static const value_string q933_info_element_vals5[] = { { Q933_IE_ANSI_REPORT_TYPE, "Report type (ANSI)" }, { Q933_IE_REPORT_TYPE, "Report type (CCITT)" }, { Q933_IE_ANSI_LINK_INTEGRITY_VERF, "Keep Alive (ANSI)" }, { Q933_IE_LINK_INTEGRITY_VERF, "Keep Alive (CCITT)" }, { Q933_IE_ANSI_PVC_STATUS, "PVC Status (ANSI)" }, { Q933_IE_PVC_STATUS, "PVC Status (CCITT)" }, { 0, NULL } }; /* Codeset 6 */ static const value_string q933_info_element_vals6[] = { { 0, NULL } }; /* Codeset 7 */ static const value_string q933_info_element_vals7[] = { { 0, NULL } }; /* Codeset array */ #define NUM_INFO_ELEMENT_VALS (Q933_IE_SHIFT_CODESET+1) static const value_string *q933_info_element_vals[NUM_INFO_ELEMENT_VALS] = { q933_info_element_vals0, q933_info_element_vals1, q933_info_element_vals2, q933_info_element_vals3, q933_info_element_vals4, q933_info_element_vals5, q933_info_element_vals6, q933_info_element_vals7, }; static const value_string q933_repeat_indication_vals[] = { { 0x2, "Prioritized list" }, { 0, NULL } }; /* * ITU-standardized coding. */ #define Q933_ITU_STANDARDIZED_CODING 0x00 /* * Dissect a Segmented message information element. */ static void dissect_q933_segmented_message_ie(tvbuff_t *tvb, packet_info *pinfo, int offset, int len, proto_tree *tree) { guint8 octet; if (len != 2) { proto_tree_add_expert_format(tree, pinfo, &ei_q933_invalid_length, tvb, offset, len, "Segmented message: length is %d, should be 2", len); return; } octet = tvb_get_guint8(tvb, offset); if (octet & 0x80) { proto_tree_add_item(tree, hf_q933_first_segment, tvb, offset, 1, ENC_NA); } else { proto_tree_add_item(tree, hf_q933_not_first_segment, tvb, offset, 1, ENC_NA); } proto_tree_add_item(tree, hf_q933_segmented_message_type, tvb, offset + 1, 1, ENC_BIG_ENDIAN); } /* * Dissect a Bearer capability or Low-layer compatibility information element. */ static const value_string q933_coding_standard_vals[] = { { 0x0, "ITU-T standardized coding" }, { 0x1, "ISO/IEC standard" }, { 0x2, "National standard" }, { 0x3, "Standard defined for this particular network" }, { 0, NULL } }; static const value_string q933_information_transfer_capability_vals[] = { { 0x08, "Unrestricted digital information" }, { 0, NULL } }; static const value_string q933_transfer_mode_vals[] = { { 0x01, "Frame mode" }, { 0, NULL } }; static const value_string q933_uil1_vals[] = { { 0x01, "V.110/I.460/X.30 rate adaption" }, { 0x02, "Recommendation G.711 u-law" }, { 0x03, "Recommendation G.711 A-law" }, { 0x04, "Recommendation G.721 32 kbit/s ADPCM and Recommendation I.460" }, { 0x05, "Recommendation H.221 and H.242" }, { 0x06, "Recommendation H.223 and H.245" }, { 0x07, "Non-ITU-T-standardized rate adaption" }, { 0x08, "V.120 rate adaption" }, { 0x09, "X.31 HDLC flag stuffing" }, { 0, NULL }, }; static const value_string q933_l1_user_rate_vals[] = { { 0x00, "Rate indicated by E-bits" }, { 0x01, "0.6 kbit/s" }, { 0x02, "1.2 kbit/s" }, { 0x03, "2.4 kbit/s" }, { 0x04, "3.6 kbit/s" }, { 0x05, "4.8 kbit/s" }, { 0x06, "7.2 kbit/s" }, { 0x07, "8 kbit/s" }, { 0x08, "9.6 kbit/s" }, { 0x09, "14.4 kbit/s" }, { 0x0A, "16 kbit/s" }, { 0x0B, "19.2 kbit/s" }, { 0x0C, "32 kbit/s" }, { 0x0E, "48 kbit/s" }, { 0x0F, "56 kbit/s" }, { 0x10, "64 kbit/s "}, { 0x15, "0.1345 kbit/s" }, { 0x16, "0.100 kbit/s" }, { 0x17, "0.075/1.2 kbit/s" }, { 0x18, "1.2/0.075 kbit/s" }, { 0x19, "0.050 kbit/s" }, { 0x1A, "0.075 kbit/s" }, { 0x1B, "0.110 kbit/s" }, { 0x1C, "0.150 kbit/s" }, { 0x1D, "0.200 kbit/s" }, { 0x1E, "0.300 kbit/s" }, { 0x1F, "12 kbit/s" }, { 0, NULL } }; static const value_string q933_l1_stop_bits_vals[] = { { 0x20, "1" }, { 0x40, "1.5" }, { 0x60, "2" }, { 0, NULL } }; static const value_string q933_l1_data_bits_vals[] = { { 0x08, "5" }, { 0x10, "7" }, { 0x18, "8" }, { 0, NULL } }; static const value_string q933_l1_parity_vals[] = { { 0x00, "Odd" }, { 0x02, "Even" }, { 0x03, "None" }, { 0x04, "Forced to 0" }, { 0x05, "Forced to 1" }, { 0, NULL } }; #define Q933_UIL2_USER_SPEC 0x10 static const value_string q933_uil2_vals[] = { { 0x01, "Basic mode ISO 1745" }, { 0x06, "X.25, link level" }, { 0x07, "X.25 multilink" }, { 0x08, "T.71 Extended LAPB" }, { 0x09, "HDLC ARM" }, { 0x0A, "HDLC NRM" }, { 0x0B, "HDLC ABM" }, { 0x0C, "ISO 8802/2 LLC" }, { 0x0D, "X.75 Single Link Procedure" }, { 0x0E, "Q.922" }, { 0x0F, "Core aspects of Q.922" }, { Q933_UIL2_USER_SPEC, "User-specified" }, { 0x11, "ISO 7776 DTE-DTE operation" }, { 0, NULL } }; static const value_string q933_address_inclusion_vals[] = { { 0x01, "Address included" }, { 0x02, "Encapsulation of logical control frame" }, { 0, NULL } }; static const value_string q933_mode_vals[] = { { 0x20, "Normal mode" }, { 0x40, "Extended mode" }, { 0, NULL } }; #define Q933_UIL3_X25_PL 0x06 #define Q933_UIL3_ISO_8208 0x07 /* X.25-based */ #define Q933_UIL3_X223 0x08 /* X.25-based */ #define Q933_UIL3_TR_9577 0x0B #define Q933_UIL3_USER_SPEC 0x10 static const value_string q933_uil3_vals[] = { { Q933_UIL3_X25_PL, "X.25, packet layer" }, { Q933_UIL3_ISO_8208, "ISO/IEC 8208" }, { Q933_UIL3_X223, "X.223/ISO 8878" }, { 0x09, "ISO/IEC 8473" }, { 0x0A, "T.70" }, { Q933_UIL3_TR_9577, "ISO/IEC TR 9577" }, { Q933_UIL3_USER_SPEC, "User-specified" }, { 0, NULL } }; static void dissect_q933_protocol_discriminator(tvbuff_t *tvb, int offset, proto_tree *tree) { unsigned int discriminator = tvb_get_guint8(tvb, offset); if (discriminator == NLPID_Q_933) { proto_tree_add_uint_format_value(tree, hf_q933_discriminator, tvb, offset, 1, discriminator, "Q.933"); } else if (discriminator == NLPID_Q_2931) { proto_tree_add_uint_format_value(tree, hf_q933_discriminator, tvb, offset, 1, discriminator, "Q.2931"); } else if ((discriminator >= 16 && discriminator < 63) || ((discriminator >= 80) && (discriminator < 254))) { proto_tree_add_uint_format_value(tree, hf_q933_discriminator, tvb, offset, 1, discriminator, "Network layer or layer 3 protocol (0x%02X)", discriminator); } else if (discriminator >= 64 && discriminator <= 79) { proto_tree_add_uint_format_value(tree, hf_q933_discriminator, tvb, offset, 1, discriminator, "National use (0x%02X)", discriminator); } else { proto_tree_add_uint_format_value(tree, hf_q933_discriminator, tvb, offset, 1, discriminator, "Reserved (0x%02X)", discriminator); } } static void dissect_q933_bearer_capability_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; guint8 coding_standard; guint8 uil2_protocol; guint8 uil3_protocol; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the bearer capability is encoded, * so just dump it as data and be done with it. */ proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); return; } proto_tree_add_uint(tree, hf_q933_information_transfer_capability, tvb, offset, 1, octet); proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; /* * XXX - only in Low-layer compatibility information element. */ if (!(octet & Q933_IE_VL_EXTENSION)) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_out_band_negotiation, tvb, offset, 1, ENC_NA); offset += 1; len -= 1; } if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_uint(tree, hf_q933_transfer_mode, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); if ((octet & 0x60) == 0x20) { /* * Layer 1 information. */ proto_tree_add_uint(tree, hf_q933_uil1, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l1_done; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_layer_1, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_user_rate, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l1_done; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_rate_adaption_header, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_multiple_frame_establishment, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_mode_of_operation, tvb, offset, 1, ENC_NA); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l1_done; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_stop_bits, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_q933_data_bits, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_q933_parity, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l1_done; if (len == 0) return; proto_tree_add_item(tree, hf_q933_duplex, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_modem_type, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; } l1_done: ; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); if ((octet & 0x60) == 0x40) { /* * Layer 2 information. */ uil2_protocol = octet & 0x1F; proto_tree_add_item(tree, hf_q933_user_information_layer_2_protocol, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; /* * XXX - only in Low-layer compatibility information element. */ if (octet & Q933_IE_VL_EXTENSION) goto l2_done; if (len == 0) return; if (uil2_protocol == Q933_UIL2_USER_SPEC) { proto_tree_add_item(tree, hf_q933_user_specified_layer_2_protocol_information, tvb, offset, 1, ENC_BIG_ENDIAN); } else { proto_tree_add_item(tree, hf_q933_address_inclusion, tvb, offset, 1, ENC_BIG_ENDIAN); } offset += 1; len -= 1; } l2_done: ; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); if ((octet & 0x60) == 0x60) { /* * Layer 3 information. */ uil3_protocol = octet & 0x1F; proto_tree_add_item(tree, hf_q933_user_information_layer_3_protocol, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; /* * XXX - only in Low-layer compatibility information element. */ if (octet & Q933_IE_VL_EXTENSION) goto l3_done; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); switch (uil3_protocol) { case Q933_UIL3_X25_PL: case Q933_UIL3_ISO_8208: case Q933_UIL3_X223: proto_tree_add_item(tree, hf_q933_mode, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l3_done; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_default_packet_size_0F, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (octet & Q933_IE_VL_EXTENSION) goto l3_done; if (len == 0) return; proto_tree_add_item(tree, hf_q933_packet_window_size, tvb, offset, 1, ENC_BIG_ENDIAN); /*offset += 1;*/ /*len -= 1;*/ break; case Q933_UIL3_USER_SPEC: proto_tree_add_uint_format_value(tree, hf_q933_default_packet_size, tvb, offset, 1, 1 << (octet & 0x0F), "%u octets", 1 << (octet & 0x0F)); /*offset += 1;*/ /*len -= 1;*/ break; case Q933_UIL3_TR_9577: if (octet & Q933_IE_VL_EXTENSION) goto l3_done; #if 0 /* XXX: len is always >0 at this point; is field always 2 bytes (if not Q933_IE_VL_EXTENSION) ? */ if (len == 0) return; #endif proto_tree_add_item(tree, hf_q933_additional_layer_3_protocol_information, tvb, offset, 2, ENC_BIG_ENDIAN); /*offset += 2;*/ /*len -= 2;*/ break; } } l3_done: ; } /* * Dissect a Cause information element. */ const value_string q933_cause_location_vals[] = { { 0x00, "User (U)" }, { 0x01, "Private network serving the local user (LPN)" }, { 0x02, "Public network serving the local user (LN)" }, { 0x03, "Transit network (TN)" }, { 0x04, "Public network serving the remote user (RLN)" }, { 0x05, "Private network serving the remote user (RPN)" }, { 0x07, "International network (INTL)" }, { 0x0A, "Network beyond interworking point (BI)" }, { 0, NULL } }; static const value_string q933_cause_recommendation_vals[] = { { 0x00, "Q.933" }, { 0x03, "X.21" }, { 0x04, "X.25" }, { 0x05, "Q.1031/Q.1051" }, { 0, NULL } }; /* * Cause codes for Cause. */ #define Q933_CAUSE_UNALLOC_NUMBER 0x01 #define Q933_CAUSE_NO_ROUTE_TO_DEST 0x03 #define Q933_CAUSE_CALL_REJECTED 0x15 #define Q933_CAUSE_NUMBER_CHANGED 0x16 #define Q933_CAUSE_ACCESS_INFO_DISC 0x2B #define Q933_CAUSE_QOS_UNAVAILABLE 0x31 #define Q933_CAUSE_CHAN_NONEXISTENT 0x52 #define Q933_CAUSE_INCOMPATIBLE_DEST 0x58 #define Q933_CAUSE_MAND_IE_MISSING 0x60 #define Q933_CAUSE_MT_NONEX_OR_UNIMPL 0x61 #define Q933_CAUSE_IE_NONEX_OR_UNIMPL 0x63 #define Q933_CAUSE_INVALID_IE_CONTENTS 0x64 #define Q933_CAUSE_MSG_INCOMPAT_W_CS 0x65 #define Q933_CAUSE_REC_TIMER_EXP 0x66 const value_string q933_cause_code_vals[] = { { 0x00, "Valid cause code not yet received" }, { Q933_CAUSE_UNALLOC_NUMBER, "Unallocated (unassigned) number" }, { 0x02, "No route to specified transit network" }, { Q933_CAUSE_NO_ROUTE_TO_DEST, "No route to destination" }, { 0x04, "Send special information tone" }, { 0x05, "Misdialled trunk prefix" }, { 0x06, "Channel unacceptable" }, { 0x07, "Call awarded and being delivered in an established channel" }, { 0x08, "Prefix 0 dialed but not allowed" }, /* Q.850 - "Preemption" */ { 0x09, "Prefix 1 dialed but not allowed" }, /* Q.850 - "Preemption - circuit reserved for reuse" */ { 0x0A, "Prefix 1 dialed but not required" }, { 0x0B, "More digits received than allowed, call is proceeding" }, { 0x0E, "QoR: ported number" }, { 0x10, "Normal call clearing" }, { 0x11, "User busy" }, { 0x12, "No user responding" }, { 0x13, "No answer from user (user alerted)" }, { 0x14, "Subscriber absent" }, { Q933_CAUSE_CALL_REJECTED, "Call rejected" }, { Q933_CAUSE_NUMBER_CHANGED, "Number changed" }, { 0x17, "Reverse charging rejected" }, /* Q.850 - "Redirection to new destination" */ { 0x18, "Call suspended" }, /* Q.850 Amendment 1 - "Call rejected due to feature at the destination" */ { 0x19, "Call resumed" }, /* Q.850 - "Exchange routing error */ { 0x1A, "Non-selected user clearing" }, { 0x1B, "Destination out of order" }, { 0x1C, "Invalid number format (incomplete number)" }, { 0x1D, "Facility rejected" }, { 0x1E, "Response to STATUS ENQUIRY" }, { 0x1F, "Normal unspecified" }, { 0x21, "Circuit out of order" }, { 0x22, "No circuit/channel available" }, { 0x23, "Destination unattainable" }, { 0x25, "Degraded service" }, { 0x26, "Network out of order" }, { 0x27, "Transit delay range cannot be achieved" }, /* Q.850 - "Permanent frame mode connection out of service" */ { 0x28, "Throughput range cannot be achieved" }, /* Q.850 - "Permanent frame mode connection operational" */ { 0x29, "Temporary failure" }, { 0x2A, "Switching equipment congestion" }, { Q933_CAUSE_ACCESS_INFO_DISC, "Access information discarded" }, { 0x2C, "Requested circuit/channel not available" }, { 0x2D, "Pre-empted" }, { 0x2E, "Precedence call blocked" }, { 0x2F, "Resources unavailable, unspecified" }, { Q933_CAUSE_QOS_UNAVAILABLE, "Quality of service unavailable" }, { 0x32, "Requested facility not subscribed" }, { 0x33, "Reverse charging not allowed" }, { 0x34, "Outgoing calls barred" }, { 0x35, "Outgoing calls barred within CUG" }, { 0x36, "Incoming calls barred" }, { 0x37, "Incoming calls barred within CUG" }, { 0x38, "Call waiting not subscribed" }, { 0x39, "Bearer capability not authorized" }, { 0x3A, "Bearer capability not presently available" }, { 0x3E, "Inconsistency in designated outgoing access information and subscriber class" }, { 0x3F, "Service or option not available, unspecified" }, { 0x41, "Bearer capability not implemented" }, { 0x42, "Channel type not implemented" }, { 0x43, "Transit network selection not implemented" }, { 0x44, "Message not implemented" }, { 0x45, "Requested facility not implemented" }, { 0x46, "Only restricted digital information bearer capability is available" }, { 0x4F, "Service or option not implemented, unspecified" }, { 0x51, "Invalid call reference value" }, { Q933_CAUSE_CHAN_NONEXISTENT, "Identified channel does not exist" }, { 0x53, "Call identity does not exist for suspended call" }, { 0x54, "Call identity in use" }, { 0x55, "No call suspended" }, { 0x56, "Call having the requested call identity has been cleared" }, { 0x57, "Called user not member of CUG" }, { Q933_CAUSE_INCOMPATIBLE_DEST, "Incompatible destination" }, { 0x59, "Non-existent abbreviated address entry" }, { 0x5A, "Destination address missing, and direct call not subscribed" }, /* Q.850 - "Non-existent CUG" */ { 0x5B, "Invalid transit network selection (national use)" }, { 0x5C, "Invalid facility parameter" }, { 0x5D, "Mandatory information element is missing" }, { 0x5F, "Invalid message, unspecified" }, { Q933_CAUSE_MAND_IE_MISSING, "Mandatory information element is missing" }, { Q933_CAUSE_MT_NONEX_OR_UNIMPL,"Message type non-existent or not implemented" }, { 0x62, "Message not compatible with call state or message type non-existent or not implemented" }, { Q933_CAUSE_IE_NONEX_OR_UNIMPL,"Information element non-existent or not implemented" }, { Q933_CAUSE_INVALID_IE_CONTENTS,"Invalid information element contents" }, { Q933_CAUSE_MSG_INCOMPAT_W_CS, "Message not compatible with call state" }, { Q933_CAUSE_REC_TIMER_EXP, "Recovery on timer expiry" }, { 0x67, "Parameter non-existent or not implemented - passed on" }, { 0x6E, "Message with unrecognized parameter discarded" }, { 0x6F, "Protocol error, unspecified" }, { 0x7F, "Internetworking, unspecified" }, { 0, NULL } }; static const value_string q933_cause_condition_vals[] = { { 0x00, "Unknown" }, { 0x01, "Permanent" }, { 0x02, "Transient" }, { 0x00, NULL } }; #define Q933_REJ_USER_SPECIFIC 0x00 #define Q933_REJ_IE_MISSING 0x04 #define Q933_REJ_IE_INSUFFICIENT 0x08 static const value_string q933_rejection_reason_vals[] = { { 0x00, "User specific" }, { 0x04, "Information element missing" }, { 0x08, "Information element contents are not sufficient" }, { 0x00, NULL } }; static const true_false_string tfs_user_provider = { "User", "Provider" }; static void dissect_q933_cause_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree, int hf_cause_value) { guint8 octet; guint8 cause_value; guint8 coding_standard; guint8 rejection_reason; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the cause is encoded, * so just dump it as data and be done with it. */ proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); return; } proto_tree_add_uint(tree, hf_q933_cause_location, tvb, offset, 1, octet); proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; if (!(octet & Q933_IE_VL_EXTENSION)) { if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_recommendation, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; } if (len == 0) return; octet = tvb_get_guint8(tvb, offset); cause_value = octet & 0x7F; proto_tree_add_uint(tree, hf_cause_value, tvb, offset, 1, cause_value); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; if (len == 0) return; switch (cause_value) { case Q933_CAUSE_UNALLOC_NUMBER: case Q933_CAUSE_NO_ROUTE_TO_DEST: case Q933_CAUSE_QOS_UNAVAILABLE: proto_tree_add_item(tree, hf_q933_network_service, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_condition_normal, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_condition, tvb, offset, 1, ENC_BIG_ENDIAN); break; case Q933_CAUSE_CALL_REJECTED: rejection_reason = octet & 0x7C; proto_tree_add_item(tree, hf_q933_rejection_reason, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_q933_condition, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (len == 0) return; switch (rejection_reason) { case Q933_REJ_USER_SPECIFIC: proto_tree_add_item(tree, hf_q933_user_specific_diagnostic, tvb, offset, len, ENC_NA); break; case Q933_REJ_IE_MISSING: proto_tree_add_item(tree, hf_q933_missing_information_element, tvb, offset, 1, ENC_BIG_ENDIAN); break; case Q933_REJ_IE_INSUFFICIENT: proto_tree_add_item(tree, hf_q933_insufficient_information_element, tvb, offset, 1, ENC_BIG_ENDIAN); break; default: proto_tree_add_item(tree, hf_q933_diagnostic, tvb, offset, len, ENC_NA); break; } break; case Q933_CAUSE_ACCESS_INFO_DISC: case Q933_CAUSE_INCOMPATIBLE_DEST: case Q933_CAUSE_MAND_IE_MISSING: case Q933_CAUSE_IE_NONEX_OR_UNIMPL: case Q933_CAUSE_INVALID_IE_CONTENTS: do { proto_tree_add_item(tree, hf_q933_information_element, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; } while (len != 0); break; case Q933_CAUSE_MT_NONEX_OR_UNIMPL: case Q933_CAUSE_MSG_INCOMPAT_W_CS: proto_tree_add_item(tree, hf_q933_message_type, tvb, offset, 1, ENC_BIG_ENDIAN); break; case Q933_CAUSE_REC_TIMER_EXP: if (len < 3) return; proto_tree_add_item(tree, hf_q933_timer, tvb, offset, 3, ENC_ASCII|ENC_NA); break; default: proto_tree_add_item(tree, hf_q933_diagnostics, tvb, offset, len, ENC_NA); } } /* * Dissect a Call state information element. */ static const value_string q933_call_state_vals[] = { { 0x00, "Null" }, { 0x01, "Call initiated" }, { 0x02, "Overlap sending" }, { 0x03, "Outgoing call proceeding" }, { 0x04, "Call delivered" }, { 0x06, "Call present" }, { 0x07, "Call received" }, { 0x08, "Connect request" }, { 0x09, "Incoming call proceeding" }, { 0x0A, "Active" }, { 0x0B, "Disconnect request" }, { 0x0C, "Disconnect indication" }, { 0x0F, "Suspend request" }, { 0x12, "Resume request" }, { 0x13, "Release request" }, { 0x16, "Call abort"}, { 0x19, "Overlap receiving" }, { 0x3D, "Restart request" }, { 0x3E, "Restart" }, { 0, NULL } }; static void dissect_q933_call_state_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; guint8 coding_standard; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the call state is encoded, * so just dump it as data and be done with it. */ proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); return; } proto_tree_add_item(tree, hf_q933_call_state, tvb, offset, 1, ENC_BIG_ENDIAN); } /* * Dissect a Report Type information element. */ #define Q933_IE_REPORT_TYPE_FULL_STATUS 0x00 #define Q933_IE_REPORT_TYPE_LINK_VERIFY 0x01 #define Q933_IE_REPORT_TYPE_ASYNC_PVC_STATUS 0x02 static const value_string q933_report_type_vals[] = { { Q933_IE_REPORT_TYPE_FULL_STATUS, "Full Status" }, { Q933_IE_REPORT_TYPE_LINK_VERIFY, "Link verify" }, { Q933_IE_REPORT_TYPE_ASYNC_PVC_STATUS, "Async PVC Status" }, { 0, NULL } }; static void dissect_q933_report_type_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 report_type; if (len == 0) return; report_type = tvb_get_guint8(tvb, offset); proto_tree_add_uint(tree, hf_q933_report_type, tvb, offset, 1, report_type); } /* * Dissect a Link Integrity Verification information element. */ static void dissect_q933_link_integrity_verf_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 txseq,rxseq; if (len < 2) return; txseq = tvb_get_guint8(tvb, offset); rxseq = tvb_get_guint8(tvb, offset+1); proto_tree_add_uint(tree, hf_q933_link_verf_txseq, tvb, offset, 1, txseq); proto_tree_add_uint(tree, hf_q933_link_verf_rxseq, tvb, offset+1, 1, rxseq); } /* * Dissect a PVC status information element. */ static const value_string q933_pvc_status_vals[] = { {0x00, "Inactive"}, {0x02, "Active"}, {0x08, "New"}, {0x0a, "New, Active"}, {0, NULL} }; static void dissect_q933_pvc_status_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint32 dlci; guint8 dlci_len=2; if (len < 3) return; dlci = ((tvb_get_guint8(tvb, offset) & 0x3F) << 4) | ((tvb_get_guint8(tvb, offset+1) & 0x78) >> 3); /* first determine the DLCI field length */ if (len == 4) { dlci = (dlci << 6) | ((tvb_get_guint8(tvb, offset+2) & 0x7E) >> 1); dlci_len++; } else if (len == 5) { dlci = (dlci << 13) | (tvb_get_guint8(tvb, offset+3) & 0x7F) | ((tvb_get_guint8(tvb, offset+4) & 0x7E) >> 1); dlci_len+=2; } proto_tree_add_uint(tree, hf_q933_dlci, tvb, offset, dlci_len, dlci); proto_tree_add_item(tree, hf_q933_status, tvb, offset+dlci_len, 1, ENC_BIG_ENDIAN); } /* * Dissect a Channel identification information element. */ #define Q933_INTERFACE_IDENTIFIED 0x40 #define Q933_NOT_BASIC_CHANNEL 0x20 static const value_string q933_basic_channel_selection_vals[] = { { 0x00, "No channel" }, { 0x01, "B1 channel" }, { 0x02, "B2 channel" }, { 0x03, "Any channel" }, { 0, NULL } }; static const value_string q933_not_basic_channel_selection_vals[] = { { 0x00, "No channel" }, { 0x01, "Channel indicated in following octets" }, { 0x03, "Any channel" }, { 0, NULL } }; #define Q933_IS_SLOT_MAP 0x10 static const value_string q933_element_type_vals[] = { { 0x03, "B-channel units" }, { 0x06, "H0-channel units" }, { 0x08, "H11-channel units" }, { 0x09, "H12-channel units" }, { 0, NULL } }; static const true_false_string tfs_explicitly_implicitly_identified = { "Explicitly identified", "Implicitly identified" }; static const true_false_string tfs_not_basic_basic = { "Not basic", "Basic" }; static const true_false_string tfs_required_preferred = { "Required", "Preferred" }; static const true_false_string tfs_dchannel_not_dchannel = { "D-channel", "Not D-channel" }; static const true_false_string tfs_slot_map_number = { "slot map", "number" }; static void dissect_q933_channel_identification_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; int identifier_offset; int identifier_len; guint8 coding_standard; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_interface_identified, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_interface_basic, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_indicated_channel_required, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_indicated_channel_d_channel, tvb, offset, 1, ENC_NA); if (octet & Q933_NOT_BASIC_CHANNEL) { proto_tree_add_item(tree, hf_q933_not_channel_selection, tvb, offset, 1, ENC_BIG_ENDIAN); } else { proto_tree_add_item(tree, hf_q933_channel_selection, tvb, offset, 1, ENC_BIG_ENDIAN); } offset += 1; len -= 1; if (octet & Q933_INTERFACE_IDENTIFIED) { identifier_offset = offset; identifier_len = 0; do { if (len == 0) break; octet = tvb_get_guint8(tvb, offset); offset += 1; len -= 1; identifier_len++; } while (!(octet & Q933_IE_VL_EXTENSION)); /* * XXX - do we want to strip off the 8th bit on the * last octet of the interface identifier? */ if (identifier_len != 0) { proto_tree_add_item(tree, hf_q933_interface_identifier, tvb, identifier_offset, identifier_len, ENC_NA); } } if (octet & Q933_NOT_BASIC_CHANNEL) { if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the channel identifier is * encoded, so just dump it as data and be done * with it. */ proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); return; } proto_tree_add_item(tree, hf_q933_channel_indicated_by, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, (octet & Q933_IS_SLOT_MAP) ? hf_q933_map_element_type : hf_q933_channel_type, tvb, offset, 1, ENC_NA); /* * XXX - dump the channel number or slot map. */ } } /* * Dissect a Progress indicator information element. */ static const value_string q933_progress_description_vals[] = { { 0x01, "Call is not end-to-end ISDN - progress information available in-band" }, { 0x02, "Destination address is non-ISDN" }, { 0x03, "Origination address is non-ISDN" }, { 0x04, "Call has returned to the ISDN" }, { 0x05, "Interworking has occurred and has resulted in a telecommunications service change" }, { 0x08, "In-band information or an appropriate pattern is now available" }, { 0, NULL } }; static void dissect_q933_progress_indicator_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; guint8 coding_standard; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the progress indicator is encoded, * so just dump it as data and be done with it. */ proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); return; } proto_tree_add_item(tree, hf_q933_location, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (len == 0) return; proto_tree_add_item(tree, hf_q933_progress_description, tvb, offset, 1, ENC_BIG_ENDIAN); } /* * Dissect a Network-specific facilities or Transit network selection * information element. */ static const value_string q933_netid_type_vals[] = { { 0x00, "User specified" }, { 0x20, "National network identification" }, { 0x30, "International network identification" }, { 0, NULL } }; static const value_string q933_netid_plan_vals[] = { { 0x00, "Unknown" }, { 0x01, "Carrier Identification Code" }, { 0x03, "X.121 data network identification code" }, { 0, NULL } }; static void dissect_q933_ns_facilities_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; int netid_len; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); netid_len = octet & 0x7F; proto_tree_add_item(tree, hf_q933_network_identification_length, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (netid_len != 0) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_type_of_network_identification, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_q933_network_identification_plan, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; netid_len--; if (len == 0) return; if (netid_len > len) netid_len = len; if (netid_len != 0) { proto_tree_add_item(tree, hf_q933_network_identification, tvb, offset, netid_len, ENC_NA|ENC_ASCII); offset += netid_len; len -= netid_len; } } /* * Whatever is left is the network-specific facility * specification. */ if (len == 0) return; proto_tree_add_item(tree, hf_q933_network_specific_facility_specification, tvb, offset, len, ENC_NA); } static int dissect_q933_guint16_value(tvbuff_t *tvb, packet_info *pinfo, int offset, int len, proto_tree *tree, int hf) { guint8 octet; guint16 value; int value_len; value_len = 0; octet = tvb_get_guint8(tvb, offset); if (octet & Q933_IE_VL_EXTENSION) { /* * Only one octet long - error. */ goto bad_length; } value = (octet & 0x3) << 14; offset += 1; len -= 1; value_len++; if (len == 0) { /* * We've reached the end of the information element - error. */ goto past_end; } octet = tvb_get_guint8(tvb, offset); if (octet & Q933_IE_VL_EXTENSION) { /* * Only two octets long - error. */ goto bad_length; } value |= (octet & 0x7F) << 7; offset += 1; len -= 1; value_len++; if (len == 0) { /* * We've reached the end of the information element - error. */ goto past_end; } octet = tvb_get_guint8(tvb, offset); if (!(octet & Q933_IE_VL_EXTENSION)) { /* * More than three octets long - error. */ goto bad_length; } value |= (octet & 0x7F); offset += 1; /*len -= 1;*/ value_len++; proto_tree_add_uint(tree, hf, tvb, offset, value_len, value); return value_len; past_end: proto_tree_add_expert_format(tree, pinfo, &ei_q933_invalid_length, tvb, offset, len, "%s goes past end of information element", proto_registrar_get_name(hf)); return -1; bad_length: proto_tree_add_expert_format(tree, pinfo, &ei_q933_invalid_length, tvb, offset, len, "%s isn't 3 octets long", proto_registrar_get_name(hf)); return -1; } /* * Dissect an End-to-end transit delay information element. */ static void dissect_q933_e2e_transit_delay_ie(tvbuff_t *tvb, packet_info *pinfo, int offset, int len, proto_tree *tree) { int value_len; if (len == 0) return; value_len = dissect_q933_guint16_value(tvb, pinfo, offset, len, tree, hf_q933_cumulative_transit_delay); if (value_len < 0) return; /* error */ offset += value_len; len -= value_len; if (len == 0) return; value_len = dissect_q933_guint16_value(tvb, pinfo, offset, len, tree, hf_q933_requested_end_to_end_transit_delay); if (value_len < 0) return; /* error */ offset += value_len; len -= value_len; if (len == 0) return; /*value_len = */dissect_q933_guint16_value(tvb, pinfo, offset, len, tree, hf_q933_max_end_to_end_transit_delay); } /* * Dissect a Transit delay selection and indication information element. */ static void dissect_q933_td_selection_and_int_ie(tvbuff_t *tvb, packet_info *pinfo, int offset, int len, proto_tree *tree) { if (len == 0) return; dissect_q933_guint16_value(tvb, pinfo, offset, len, tree, hf_q933_transit_delay); } static const true_false_string tfs_link_by_link_end_to_end = { "Link-by-link", "End-to-end" }; static const true_false_string tfs_no_request_request_indicated = { "No request/request denied", "Request indicated/request accepted" }; static void dissect_q933_pl_binary_parameters_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_request, tvb, offset, 1, ENC_NA); proto_tree_add_item(tree, hf_q933_confirmation, tvb, offset, 1, ENC_NA); } /* * Dissect a Reverse charging indication information element. */ static const value_string q933_reverse_charging_indication_vals[] = { { 0x01, "Reverse charging requested" }, { 0, NULL } }; static void dissect_q933_reverse_charge_ind_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_reverse_charging_indication, tvb, offset, 1, ENC_BIG_ENDIAN); } /* * Dissect a (phone) number information element. */ static const value_string q933_number_type_vals[] = { { 0x0, "Unknown" }, { 0x1, "International number" }, { 0x2, "National number" }, { 0x3, "Network specific number" }, { 0x4, "Subscriber number" }, { 0x6, "Abbreviated number" }, { 0, NULL } }; static const value_string q933_numbering_plan_vals[] = { { 0x00, "Unknown" }, { 0x01, "E.164 ISDN/telephony numbering" }, { 0x03, "X.121 data numbering" }, { 0x04, "F.69 Telex numbering" }, { 0x08, "National standard numbering" }, { 0x09, "Private numbering" }, { 0, NULL } }; static const value_string q933_presentation_indicator_vals[] = { { 0x00, "Presentation allowed" }, { 0x01, "Presentation restricted" }, { 0x02, "Number not available due to interworking" }, { 0, NULL } }; static const value_string q933_screening_indicator_vals[] = { { 0x00, "User-provided, not screened" }, { 0x01, "User-provided, verified and passed" }, { 0x02, "User-provided, verified and failed" }, { 0x03, "Network-provided" }, { 0, NULL } }; static const value_string q933_redirection_reason_vals[] = { { 0x00, "Unknown" }, { 0x01, "Call forwarding busy or called DTE busy" }, { 0x02, "Call forwarding no reply" }, { 0x04, "Call deflection" }, { 0x09, "Called DTE out of order" }, { 0x0A, "Call forwarding by the called DTE" }, { 0x0F, "Call forwarding unconditional or systematic call redirection" }, { 0, NULL } }; static void dissect_q933_number_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree, int hfindex) { guint8 octet; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_uint(tree, hf_q933_numbering_plan, tvb, offset, 1, octet); proto_tree_add_uint(tree, hf_q933_number_type, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; if (!(octet & Q933_IE_VL_EXTENSION)) { if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_uint(tree, hf_q933_screening_ind, tvb, offset, 1, octet); proto_tree_add_uint(tree, hf_q933_presentation_ind, tvb, offset, 1, octet); proto_tree_add_boolean(tree, hf_q933_extension_ind, tvb, offset, 1, octet); offset += 1; len -= 1; } /* * XXX - only in a Redirecting number information element. */ if (!(octet & Q933_IE_VL_EXTENSION)) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_reason_for_redirection, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; } if (len == 0) return; proto_tree_add_item(tree, hfindex, tvb, offset, len, ENC_ASCII|ENC_NA); } /* * Dissect a party subaddress information element. */ static const value_string q933_subaddress_type_vals[] = { { 0x00, "X.213/ISO 8348 Add.2 NSAP" }, { 0x20, "User-specified" }, { 0, NULL } }; static const value_string q933_odd_even_indicator_vals[] = { { 0x00, "Even number of address signals" }, { 0x10, "Odd number of address signals" }, { 0, NULL } }; static void dissect_q933_party_subaddr_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { if (len == 0) return; proto_tree_add_item(tree, hf_q933_type_of_subaddress, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_q933_odd_even_indicator, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (len == 0) return; proto_tree_add_item(tree, hf_q933_subaddress, tvb, offset, len, ENC_NA); } /* * Dissect a High-layer compatibility information element. */ #define Q933_AUDIOVISUAL 0x60 static const value_string q933_high_layer_characteristics_vals[] = { { 0x01, "Telephony" }, { 0x04, "F.182 Facsimile Group 2/3" }, { 0x21, "F.184 Facsimile Group 4 Class I" }, { 0x24, "F.230 Teletex, basic and mixed mode, and F.184 Facsimile Group 4, Classes II and III" }, { 0x28, "F.220 Teletex, basic and processable mode" }, { 0x31, "F.200 Teletex, basic mode" }, { 0x32, "F.300 and T.102 syntax-based Videotex" }, { 0x33, "F.300 and T.101 international Videotex interworking" }, { 0x35, "F.60 Telex" }, { 0x38, "X.400 Message Handling Systems" }, { 0x41, "X.200 OSI application" }, { 0x42, "FTAM application" }, { 0x5E, "Reserved for maintenance" }, { 0x5F, "Reserved for management" }, { Q933_AUDIOVISUAL, "F.720/F.821 and F.731 Profile 1a videotelephony" }, { 0x61, "F.702 and F.731 Profile 1b videoconferencing" }, { 0x62, "F.702 and F.731 audiographic conferencing" }, { 0, NULL } }; static const value_string q933_audiovisual_characteristics_vals[] = { { 0x01, "Capability set of initial channel of H.221" }, { 0x02, "Capability set of subsequent channel of H.221" }, { 0x21, "Capability set of initial channel of an active 3.1kHz audio or speech call" }, { 0x00, NULL } }; static void dissect_q933_high_layer_compat_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; guint8 coding_standard; guint8 characteristics; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); coding_standard = octet & 0x60; proto_tree_add_uint(tree, hf_q933_coding_standard, tvb, offset, 1, octet); offset += 1; len -= 1; if (coding_standard != Q933_ITU_STANDARDIZED_CODING) { /* * We don't know how the call state is encoded, * so just dump it as data and be done with it. */ proto_tree_add_item(tree, hf_q933_data, tvb, offset, len, ENC_NA); return; } if (len == 0) return; octet = tvb_get_guint8(tvb, offset); characteristics = octet & 0x7F; proto_tree_add_item(tree, hf_q933_high_layer_characteristics_identification, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (!(octet & Q933_IE_VL_EXTENSION)) { if (len == 0) return; if (characteristics == Q933_AUDIOVISUAL) { proto_tree_add_item(tree, hf_q933_extended_audiovisual_characteristics_id, tvb, offset, 1, ENC_BIG_ENDIAN); } else { proto_tree_add_item(tree, hf_q933_extended_high_layer_characteristics_id, tvb, offset, 1, ENC_BIG_ENDIAN); } } } /* * Dissect a User-user information element. */ #define Q933_PROTOCOL_DISCRIMINATOR_IA5 0x04 #define Q933_PROTOCOL_DISCRIMINATOR_ASN1 0x05 static const value_string q933_protocol_discriminator_vals[] = { { 0x00, "User-specific protocol" }, { 0x01, "OSI high layer protocols" }, { 0x02, "X.244" }, { Q933_PROTOCOL_DISCRIMINATOR_IA5, "IA5 characters" }, { Q933_PROTOCOL_DISCRIMINATOR_ASN1, "X.208 and X.209 coded user information" }, { 0x07, "V.120 rate adaption" }, { 0x08, "Q.933/I.451 user-network call control messages" }, { 0, NULL } }; static void dissect_q933_user_user_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree) { guint8 octet; if (len == 0) return; octet = tvb_get_guint8(tvb, offset); proto_tree_add_item(tree, hf_q933_protocol_discriminator, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; len -= 1; if (len == 0) return; switch (octet) { case Q933_PROTOCOL_DISCRIMINATOR_IA5: proto_tree_add_item(tree, hf_q933_user_information_str, tvb, offset, len, ENC_NA|ENC_ASCII); break; default: proto_tree_add_item(tree, hf_q933_user_information_bytes, tvb, offset, len, ENC_NA); break; } } /* * Dissect information elements consisting of ASCII^H^H^H^H^HIA5 text. */ static void dissect_q933_ia5_ie(tvbuff_t *tvb, int offset, int len, proto_tree *tree, int hf) { if (len != 0) { proto_tree_add_item(tree, hf, tvb, offset, len, ENC_ASCII|ENC_NA); } } static const value_string q933_codeset_vals[] = { { 0x00, "Q.933 information elements" }, { 0x04, "Information elements for ISO/IEC use" }, { 0x05, "Information elements for national use" }, { 0x06, "Information elements specific to the local network" }, { 0x07, "User-specific information elements" }, { 0x00, NULL }, }; static int dissect_q933(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { int offset = 0; proto_tree *q933_tree = NULL; proto_item *ti; proto_tree *ie_tree = NULL; guint8 call_ref_len; guint8 call_ref[16]; guint8 message_type; guint8 info_element; guint16 info_element_len; int codeset, locked_codeset; gboolean non_locking_shift; col_set_str(pinfo->cinfo, COL_PROTOCOL, "Q.933"); if (tree) { ti = proto_tree_add_item(tree, proto_q933, tvb, offset, -1, ENC_NA); q933_tree = proto_item_add_subtree(ti, ett_q933); dissect_q933_protocol_discriminator(tvb, offset, q933_tree); } offset += 1; call_ref_len = tvb_get_guint8(tvb, offset) & 0xF; /* XXX - do as a bit field? */ if (q933_tree != NULL) proto_tree_add_uint(q933_tree, hf_q933_call_ref_len, tvb, offset, 1, call_ref_len); offset += 1; if (call_ref_len != 0) { tvb_memcpy(tvb, call_ref, offset, call_ref_len); proto_tree_add_boolean(q933_tree, hf_q933_call_ref_flag, tvb, offset, 1, (call_ref[0] & 0x80) != 0); call_ref[0] &= 0x7F; proto_tree_add_bytes(q933_tree, hf_q933_call_ref, tvb, offset, call_ref_len, call_ref); offset += call_ref_len; } message_type = tvb_get_guint8(tvb, offset); col_add_str(pinfo->cinfo, COL_INFO, val_to_str(message_type, q933_message_type_vals, "Unknown message type (0x%02X)")); proto_tree_add_uint(q933_tree, hf_q933_message_type, tvb, offset, 1, message_type); offset += 1; /* * And now for the information elements.... */ codeset = locked_codeset = 0; /* start out in codeset 0 */ while (tvb_reported_length_remaining(tvb, offset) > 0) { info_element = tvb_get_guint8(tvb, offset); /* Check for the codeset shift */ if ((info_element & Q933_IE_SO_MASK) && ((info_element & Q933_IE_SO_IDENTIFIER_MASK) == Q933_IE_SHIFT)) { non_locking_shift = info_element & Q933_IE_SHIFT_NON_LOCKING; codeset = info_element & Q933_IE_SHIFT_CODESET; if (!non_locking_shift) locked_codeset = codeset; proto_tree_add_item(q933_tree, non_locking_shift ? hf_q933_non_locking_shift_to_codeset : hf_q933_locking_shift_to_codeset, tvb, offset, 1, ENC_NA); offset += 1; continue; } /* * Check for the single-octet IEs. */ if (info_element & Q933_IE_SO_MASK) { switch ((codeset << 8) | (info_element & Q933_IE_SO_IDENTIFIER_MASK)) { case CS0 | Q933_IE_REPEAT_INDICATOR: proto_tree_add_item(q933_tree, hf_q933_repeat_indicator, tvb, offset, 1, ENC_BIG_ENDIAN); break; default: proto_tree_add_expert_format(q933_tree, pinfo, &ei_q933_information_element, tvb, offset, 1, "Unknown information element (0x%02X)", info_element); break; } offset += 1; codeset = locked_codeset; continue; } /* * Variable-length IE. */ info_element_len = tvb_get_guint8(tvb, offset + 1); if (q933_tree != NULL) { ie_tree = proto_tree_add_subtree(q933_tree, tvb, offset, 1+1+info_element_len, ett_q933_ie, NULL, val_to_str(info_element, q933_info_element_vals[codeset], "Unknown information element (0x%02X)")); proto_tree_add_uint_format_value(ie_tree, hf_q933_information_element, tvb, offset, 1, info_element, "%s", val_to_str(info_element, q933_info_element_vals[codeset], "Unknown (0x%02X)")); proto_tree_add_item(ie_tree, hf_q933_length, tvb, offset + 1, 1, ENC_BIG_ENDIAN); switch ((codeset << 8) | info_element) { case CS0 | Q933_IE_SEGMENTED_MESSAGE: dissect_q933_segmented_message_ie(tvb, pinfo, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_BEARER_CAPABILITY: case CS0 | Q933_IE_LOW_LAYER_COMPAT: dissect_q933_bearer_capability_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_CAUSE: dissect_q933_cause_ie(tvb, offset + 2, info_element_len, ie_tree, hf_q933_cause_value); break; case CS0 | Q933_IE_CALL_STATE: dissect_q933_call_state_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_CHANNEL_IDENTIFICATION: dissect_q933_channel_identification_ie( tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_PROGRESS_INDICATOR: dissect_q933_progress_indicator_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_NETWORK_SPECIFIC_FACIL: case CS0 | Q933_IE_TRANSIT_NETWORK_SEL: dissect_q933_ns_facilities_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_DISPLAY: dissect_q933_ia5_ie(tvb, offset + 2, info_element_len, ie_tree, hf_q933_display_information); break; case CS0 | Q933_IE_E2E_TRANSIT_DELAY: dissect_q933_e2e_transit_delay_ie(tvb, pinfo, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_TD_SELECTION_AND_INT: dissect_q933_td_selection_and_int_ie( tvb, pinfo, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_PL_BINARY_PARAMETERS: dissect_q933_pl_binary_parameters_ie( tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_REVERSE_CHARGE_IND: dissect_q933_reverse_charge_ind_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_CALLING_PARTY_NUMBER: dissect_q933_number_ie(tvb, offset + 2, info_element_len, ie_tree, hf_q933_calling_party_number); break; case CS0 | Q933_IE_CONNECTED_NUMBER: dissect_q933_number_ie(tvb, offset + 2, info_element_len, ie_tree, hf_q933_connected_number); break; case CS0 | Q933_IE_CALLED_PARTY_NUMBER: dissect_q933_number_ie(tvb, offset + 2, info_element_len, ie_tree, hf_q933_called_party_number); break; case CS0 | Q933_IE_CALLING_PARTY_SUBADDR: case CS0 | Q933_IE_CALLED_PARTY_SUBADDR: dissect_q933_party_subaddr_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_HIGH_LAYER_COMPAT: dissect_q933_high_layer_compat_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_USER_USER: dissect_q933_user_user_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS0 | Q933_IE_REPORT_TYPE: case CS5 | Q933_IE_REPORT_TYPE: case CS5 | Q933_IE_ANSI_REPORT_TYPE: dissect_q933_report_type_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS5 | Q933_IE_LINK_INTEGRITY_VERF: case CS5 | Q933_IE_ANSI_LINK_INTEGRITY_VERF: dissect_q933_link_integrity_verf_ie(tvb, offset + 2, info_element_len, ie_tree); break; case CS5 | Q933_IE_PVC_STATUS: case CS5 | Q933_IE_ANSI_PVC_STATUS: dissect_q933_pvc_status_ie(tvb, offset + 2, info_element_len, ie_tree); break; default: proto_tree_add_item(ie_tree, hf_q933_data, tvb, offset + 2, info_element_len, ENC_NA); break; } } offset += 1 + 1 + info_element_len; codeset = locked_codeset; } return tvb_captured_length(tvb); } void proto_register_q933(void) { static hf_register_info hf[] = { { &hf_q933_discriminator, { "Protocol discriminator", "q933.disc", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_q933_call_ref_flag, { "Call reference flag", "q933.call_ref_flag", FT_BOOLEAN, BASE_NONE, TFS(&tfs_call_ref_flag), 0x0, NULL, HFILL }}, { &hf_q933_call_ref, { "Call reference value", "q933.call_ref", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_coding_standard, { "Coding standard", "q933.coding_standard", FT_UINT8, BASE_HEX, VALS(q933_coding_standard_vals), 0x60,NULL, HFILL }}, { &hf_q933_information_transfer_capability, { "Information transfer capability", "q933.information_transfer_capability", FT_UINT8, BASE_HEX, VALS(q933_information_transfer_capability_vals), 0x1f,NULL, HFILL }}, { &hf_q933_transfer_mode, { "Transfer mode", "q933.transfer_mode", FT_UINT8, BASE_HEX, VALS(q933_transfer_mode_vals), 0x60,NULL, HFILL }}, { &hf_q933_uil1, { "User information layer 1 protocol", "q933.uil1", FT_UINT8, BASE_HEX, VALS(q933_uil1_vals), 0x1f,NULL, HFILL }}, { &hf_q933_call_ref_len, { "Call reference value length", "q933.call_ref_len", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_message_type, { "Message type", "q933.message_type", FT_UINT8, BASE_HEX, VALS(q933_message_type_vals), 0x0, NULL, HFILL }}, { &hf_q933_cause_location, { "Cause location", "q933.cause_location", FT_UINT8, BASE_DEC, VALS(q933_cause_location_vals), 0x0f, NULL, HFILL }}, { &hf_q933_cause_value, { "Cause value", "q933.cause_value", FT_UINT8, BASE_DEC, VALS(q933_cause_code_vals), 0x7f, NULL, HFILL }}, { &hf_q933_number_type, { "Number type", "q933.number_type", FT_UINT8, BASE_HEX, VALS(q933_number_type_vals), 0x70, NULL, HFILL }}, { &hf_q933_numbering_plan, { "numbering plan", "q933.numbering_plan", FT_UINT8, BASE_HEX, VALS(q933_numbering_plan_vals), 0x0f, NULL, HFILL }}, { &hf_q933_screening_ind, { "Screening indicator", "q933.screening_ind", FT_UINT8, BASE_HEX, VALS(q933_screening_indicator_vals), 0x03, NULL, HFILL }}, { &hf_q933_presentation_ind, { "Presentation indicator", "q933.presentation_ind", FT_UINT8, BASE_HEX, VALS(q933_presentation_indicator_vals), 0x60, NULL, HFILL }}, { &hf_q933_extension_ind, { "Extension indicator", "q933.extension_ind", FT_BOOLEAN, 8, TFS(&q933_extension_ind_value), 0x80, NULL, HFILL }}, { &hf_q933_calling_party_number, { "Calling party number digits", "q933.calling_party_number.digits", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_called_party_number, { "Called party number digits", "q933.called_party_number.digits", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_connected_number, { "Connected party number digits", "q933.connected_number.digits", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, #if 0 { &hf_q933_redirecting_number, { "Redirecting party number digits", "q933.redirecting_number.digits", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, #endif { &hf_q933_report_type, { "Report type", "q933.report_type", FT_UINT8, BASE_DEC, VALS(q933_report_type_vals), 0x0, NULL, HFILL }}, { &hf_q933_link_verf_txseq, { "TX Sequence", "q933.link_verification.txseq", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_link_verf_rxseq, { "RX Sequence", "q933.link_verification.rxseq", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_data, { "Data", "q933.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, /* Generated from convert_proto_tree_add_text.pl */ { &hf_q933_first_segment, { "First segment", "q933.first_segment", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_segment_remaining, 0x7F, NULL, HFILL }}, { &hf_q933_not_first_segment, { "Not first segment", "q933.not_first_segment", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_segment_remaining, 0x7F, NULL, HFILL }}, { &hf_q933_segmented_message_type, { "Segmented message type", "q933.segmented_message_type", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_out_band_negotiation, { "Out-band negotiation", "q933.out_band_negotiation", FT_BOOLEAN, 8, TFS(&tfs_possible_not_possible), 0x40, NULL, HFILL }}, { &hf_q933_layer_1, { "Layer 1", "q933.layer_1", FT_BOOLEAN, 8, TFS(&tfs_asynchronous_synchronous), 0x40, NULL, HFILL }}, { &hf_q933_user_rate, { "User rate", "q933.user_rate", FT_UINT8, BASE_DEC, VALS(q933_l1_user_rate_vals), 0x1F, NULL, HFILL }}, { &hf_q933_rate_adaption_header, { "Rate adaption header", "q933.rate_adaption_header", FT_BOOLEAN, 8, TFS(&tfs_included_not_included), 0x40, NULL, HFILL }}, { &hf_q933_multiple_frame_establishment, { "Multiple frame establishment", "q933.multiple_frame_establishment", FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), 0x20, NULL, HFILL }}, { &hf_q933_mode_of_operation, { "Mode of operation", "q933.mode_of_operation", FT_BOOLEAN, 8, TFS(&tfs_protocol_sensative_bit_transparent), 0x10, NULL, HFILL }}, { &hf_q933_stop_bits, { "Stop bits", "q933.stop_bits", FT_UINT8, BASE_DEC, VALS(q933_l1_stop_bits_vals), 0x60, NULL, HFILL }}, { &hf_q933_data_bits, { "Data bits", "q933.data_bits", FT_UINT8, BASE_DEC, VALS(q933_l1_data_bits_vals), 0x18, NULL, HFILL }}, { &hf_q933_parity, { "Parity", "q933.parity", FT_UINT8, BASE_DEC, VALS(q933_l1_parity_vals), 0x07, NULL, HFILL }}, { &hf_q933_duplex, { "Duplex", "q933.duplex", FT_BOOLEAN, 8, TFS(&tfs_full_half), 0x40, NULL, HFILL }}, { &hf_q933_modem_type, { "Modem type (Network-specific rules)", "q933.modem_type", FT_UINT8, BASE_HEX, NULL, 0x3F, NULL, HFILL }}, { &hf_q933_user_information_layer_2_protocol, { "User information layer 2 protocol", "q933.user_information_layer_2_protocol", FT_UINT8, BASE_HEX, VALS(q933_uil2_vals), 0x1F, NULL, HFILL }}, { &hf_q933_user_specified_layer_2_protocol_information, { "User-specified layer 2 protocol information", "q933.user_specified_layer_2_protocol_information", FT_UINT8, BASE_HEX, NULL, 0x7F, NULL, HFILL }}, { &hf_q933_address_inclusion, { "Address inclusion", "q933.address_inclusion", FT_UINT8, BASE_HEX, VALS(q933_address_inclusion_vals), 0x03, NULL, HFILL }}, { &hf_q933_user_information_layer_3_protocol, { "User information layer 3 protocol", "q933.user_information_layer_3_protocol", FT_UINT8, BASE_HEX, VALS(q933_uil3_vals), 0x1F, NULL, HFILL }}, { &hf_q933_mode, { "Mode", "q933.mode", FT_UINT8, BASE_HEX, VALS(q933_mode_vals), 0x60, NULL, HFILL }}, { &hf_q933_default_packet_size_0F, { "Default packet size", "q933.default_packet_size", FT_UINT8, BASE_DEC, NULL, 0x0F, NULL, HFILL }}, { &hf_q933_packet_window_size, { "Packet window size", "q933.packet_window_size", FT_UINT8, BASE_DEC, NULL, 0x7F, NULL, HFILL }}, { &hf_q933_default_packet_size, { "Default packet size", "q933.default_packet_size", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_octet_octets, 0x0, NULL, HFILL }}, { &hf_q933_additional_layer_3_protocol_information, { "Additional layer 3 protocol information", "q933.additional_layer_3_protocol_information", FT_UINT16, BASE_HEX, VALS(nlpid_vals), 0x0FF0, NULL, HFILL }}, { &hf_q933_recommendation, { "Recommendation", "q933.recommendation", FT_UINT8, BASE_HEX, VALS(q933_cause_recommendation_vals), 0x7F, NULL, HFILL }}, { &hf_q933_network_service, { "Network service", "q933.network_service", FT_BOOLEAN, 8, TFS(&tfs_user_provider), 0x80, NULL, HFILL }}, { &hf_q933_condition_normal, { "Condition", "q933.condition_normal", FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, { &hf_q933_condition, { "Condition", "q933.condition", FT_UINT8, BASE_HEX, VALS(q933_cause_condition_vals), 0x03, NULL, HFILL }}, { &hf_q933_rejection_reason, { "Rejection reason", "q933.rejection_reason", FT_UINT8, BASE_HEX, VALS(q933_rejection_reason_vals), 0x7C, NULL, HFILL }}, { &hf_q933_user_specific_diagnostic, { "User specific diagnostic", "q933.user_specific_diagnostic", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_missing_information_element, { "Missing information element", "q933.missing_information_element", FT_UINT8, BASE_HEX, VALS(q933_info_element_vals0), 0x0, NULL, HFILL }}, { &hf_q933_insufficient_information_element, { "Insufficient information element", "q933.insufficient_information_element", FT_UINT8, BASE_HEX, VALS(q933_info_element_vals0), 0x0, NULL, HFILL }}, { &hf_q933_diagnostic, { "Diagnostic", "q933.diagnostic", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_information_element, { "Information element", "q933.information_element", FT_UINT8, BASE_HEX, VALS(q933_info_element_vals0), 0x0, NULL, HFILL }}, { &hf_q933_timer, { "Timer", "q933.timer", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_call_state, { "Call state", "q933.call_state", FT_UINT8, BASE_HEX, VALS(q933_call_state_vals), 0x3F, NULL, HFILL }}, { &hf_q933_dlci, { "DLCI", "q933.dlci", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_status, { "Status", "q933.status", FT_UINT8, BASE_DEC, VALS(q933_pvc_status_vals), 0x0A, NULL, HFILL }}, { &hf_q933_interface_identified, { "Interface", "q933.interface_identified", FT_BOOLEAN, 8, TFS(&tfs_explicitly_implicitly_identified), Q933_INTERFACE_IDENTIFIED, NULL, HFILL }}, { &hf_q933_interface_basic, { "Interface", "q933.interface_basic", FT_BOOLEAN, 8, TFS(&tfs_not_basic_basic), Q933_NOT_BASIC_CHANNEL, NULL, HFILL }}, { &hf_q933_indicated_channel_required, { "Indicated channel", "q933.indicated_channel_required", FT_BOOLEAN, 8, TFS(&tfs_required_preferred), 0x08, NULL, HFILL }}, { &hf_q933_indicated_channel_d_channel, { "Indicated channel", "q933.indicated_channel_d_channel", FT_BOOLEAN, 8, TFS(&tfs_dchannel_not_dchannel), 0x04, NULL, HFILL }}, { &hf_q933_not_channel_selection, { "Channel selection", "q933.channel_selection", FT_UINT8, BASE_HEX, VALS(q933_not_basic_channel_selection_vals), 0x03, NULL, HFILL }}, { &hf_q933_channel_selection, { "Channel selection", "q933.channel_selection", FT_UINT8, BASE_HEX, VALS(q933_basic_channel_selection_vals), 0x03, NULL, HFILL }}, { &hf_q933_interface_identifier, { "Interface identifier", "q933.interface_identifier", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_channel_indicated_by, { "Channel indicated by", "q933.channel_indicated_by", FT_BOOLEAN, 8, TFS(&tfs_slot_map_number), Q933_IS_SLOT_MAP, NULL, HFILL }}, { &hf_q933_map_element_type, { "Map element type", "q933.map_element_type", FT_UINT8, BASE_HEX, VALS(q933_element_type_vals), 0x0F, NULL, HFILL }}, { &hf_q933_channel_type, { "Channel", "q933.channel_type", FT_UINT8, BASE_HEX, VALS(q933_element_type_vals), 0x0F, NULL, HFILL }}, { &hf_q933_location, { "Location", "q933.location", FT_UINT8, BASE_HEX, VALS(q933_cause_location_vals), 0x0F, NULL, HFILL }}, { &hf_q933_progress_description, { "Progress description", "q933.progress_description", FT_UINT8, BASE_HEX, VALS(q933_progress_description_vals), 0x7F, NULL, HFILL }}, { &hf_q933_network_identification_length, { "Network identification length", "q933.network_identification_length", FT_UINT8, BASE_DEC, NULL, 0x7F, NULL, HFILL }}, { &hf_q933_type_of_network_identification, { "Type of network identification", "q933.type_of_network_identification", FT_UINT8, BASE_HEX, VALS(q933_netid_type_vals), 0x70, NULL, HFILL }}, { &hf_q933_network_identification_plan, { "Network identification plan", "q933.network_identification_plan", FT_UINT8, BASE_HEX, VALS(q933_netid_plan_vals), 0x0F, NULL, HFILL }}, { &hf_q933_network_identification, { "Network identification", "q933.network_identification", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_network_specific_facility_specification, { "Network-specific facility specification", "q933.network_specific_facility_specification", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_confirmation, { "Confirmation", "q933.confirmation", FT_BOOLEAN, 8, TFS(&tfs_link_by_link_end_to_end), 0x02, NULL, HFILL }}, { &hf_q933_reverse_charging_indication, { "Reverse charging indication", "q933.reverse_charging_indication", FT_UINT8, BASE_HEX, VALS(q933_reverse_charging_indication_vals), 0x07, NULL, HFILL }}, { &hf_q933_reason_for_redirection, { "Reason for redirection", "q933.reason_for_redirection", FT_UINT8, BASE_HEX, VALS(q933_redirection_reason_vals), 0x0F, NULL, HFILL }}, { &hf_q933_type_of_subaddress, { "Type of subaddress", "q933.type_of_subaddress", FT_UINT8, BASE_HEX, VALS(q933_subaddress_type_vals), 0x70, NULL, HFILL }}, { &hf_q933_odd_even_indicator, { "Odd/even indicator", "q933.odd_even_indicator", FT_UINT8, BASE_HEX, VALS(q933_odd_even_indicator_vals), 0x10, NULL, HFILL }}, { &hf_q933_subaddress, { "Subaddress", "q933.subaddress", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_high_layer_characteristics_identification, { "High layer characteristics identification", "q933.high_layer_characteristics_identification", FT_UINT8, BASE_HEX, VALS(q933_high_layer_characteristics_vals), 0x7F, NULL, HFILL }}, { &hf_q933_extended_audiovisual_characteristics_id, { "Extended audiovisual characteristics identification", "q933.extended_audiovisual_characteristics_id", FT_UINT8, BASE_HEX, VALS(q933_audiovisual_characteristics_vals), 0x7F, NULL, HFILL }}, { &hf_q933_extended_high_layer_characteristics_id, { "Extended high layer characteristics identification", "q933.extended_high_layer_characteristics_id", FT_UINT8, BASE_HEX, VALS(q933_high_layer_characteristics_vals), 0x7F, NULL, HFILL }}, { &hf_q933_protocol_discriminator, { "Protocol discriminator", "q933.protocol_discriminator", FT_UINT8, BASE_HEX, VALS(q933_protocol_discriminator_vals), 0x0, NULL, HFILL }}, { &hf_q933_user_information_str, { "User information", "q933.user_information_str", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_user_information_bytes, { "User information", "q933.user_information_bytes", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_locking_shift_to_codeset, { "Locking shift to codeset", "q933.locking_shift_to_codeset", FT_UINT8, BASE_DEC, VALS(q933_codeset_vals), Q933_IE_SHIFT_CODESET, NULL, HFILL }}, { &hf_q933_non_locking_shift_to_codeset, { "Non-locking shift to codeset", "q933.non_locking_shift_to_codeset", FT_UINT8, BASE_DEC, VALS(q933_codeset_vals), Q933_IE_SHIFT_CODESET, NULL, HFILL }}, { &hf_q933_repeat_indicator, { "Repeat indicator", "q933.repeat_indicator", FT_UINT8, BASE_HEX, VALS(q933_repeat_indication_vals), Q933_IE_SO_IE_MASK, NULL, HFILL }}, { &hf_q933_length, { "Length", "q933.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_q933_diagnostics, { "Diagnostics", "q933.diagnostics", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_display_information, { "Display information", "q933.display_information", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }}, { &hf_q933_cumulative_transit_delay, { "Cumulative transit delay", "q933.cumulative_transit_delay", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL }}, { &hf_q933_requested_end_to_end_transit_delay, { "Requested end-to-end transit delay", "q933.requested_end_to_end_transit_delay", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL }}, { &hf_q933_max_end_to_end_transit_delay, { "Maximum end-to-end transit delay", "q933.max_end_to_end_transit_delay", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL }}, { &hf_q933_transit_delay, { "Transit Delay", "q933.transit_delay", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL }}, { &hf_q933_request, { "Request", "q933.request", FT_BOOLEAN, 8, TFS(&tfs_no_request_request_indicated), 0x04, NULL, HFILL }}, }; static gint *ett[] = { &ett_q933, &ett_q933_ie, }; static ei_register_info ei[] = { { &ei_q933_invalid_length, { "q933.invalid_length", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }}, { &ei_q933_information_element, { "q933.information_element.unknown", PI_PROTOCOL, PI_WARN, "Unknown information element", EXPFILL }}, }; expert_module_t* expert_q933; proto_q933 = proto_register_protocol("Q.933", "Q.933", "q933"); proto_register_field_array (proto_q933, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_q933 = expert_register_protocol(proto_q933); expert_register_field_array(expert_q933, ei, array_length(ei)); q933_handle = register_dissector("q933", dissect_q933, proto_q933); } void proto_reg_handoff_q933(void) { dissector_add_uint("fr.osinl", NLPID_Q_933, q933_handle); dissector_add_uint("juniper.proto", JUNIPER_PROTO_Q933, q933_handle); } /* * Editor modelines - http://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: */