/* packet-eiss.c * * Routines for ETV-AM EISS (OC-SP-ETV-AM1.0-I05) * Copyright 2012, Weston Schmidt * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * 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 "packet-mpeg-sect.h" void proto_register_eiss(void); void proto_reg_handoff_eiss(void); static int proto_eiss = -1; static int hf_eiss_reserved2 = -1; static int hf_eiss_section_number = -1; static int hf_eiss_last_section_number = -1; static int hf_eiss_protocol_version_major = -1; static int hf_eiss_protocol_version_minor = -1; static int hf_eiss_application_type = -1; /* application_identifier() */ static int hf_eiss_organisation_id = -1; static int hf_eiss_application_id = -1; static int hf_eiss_platform_id_length = -1; /* platform id information */ static int hf_pdtHWManufacturer = -1; static int hf_pdtHWModel = -1; static int hf_pdtHWVersionMajor = -1; static int hf_pdtHWVersionMinor = -1; static int hf_pdtSWManufacturer = -1; static int hf_pdtSWModel = -1; static int hf_pdtSWVersionMajor = -1; static int hf_pdtSWVersionMinor = -1; static int hf_pdtProfile = -1; /* common to all eiss descriptors */ static int hf_eiss_descriptor_tag = -1; static int hf_eiss_descriptor_length = -1; /* application info descriptor */ static int hf_eiss_aid_app_control_code = -1; static int hf_eiss_aid_app_version_major = -1; static int hf_eiss_aid_app_version_minor = -1; static int hf_eiss_aid_max_proto_version_major = -1; static int hf_eiss_aid_max_proto_version_minor = -1; static int hf_eiss_aid_test_flag = -1; static int hf_eiss_aid_reserved = -1; static int hf_eiss_aid_priority = -1; static int hf_eiss_irl_type = -1; static int hf_eiss_irl_length = -1; static int hf_eiss_irl_string = -1; /* media time descriptor */ static int hf_eiss_mtd_time_value = -1; /* stream event descriptor */ static int hf_eiss_sed_time_value = -1; static int hf_eiss_sed_reserved = -1; static int hf_eiss_sed_descriptor_length = -1; static gint ett_eiss = -1; static gint ett_eiss_platform_id = -1; static gint ett_eiss_desc = -1; static expert_field ei_eiss_platform_id_length = EI_INIT; static expert_field ei_eiss_invalid_section_length = EI_INIT; static expert_field ei_eiss_invalid_section_syntax_indicator = EI_INIT; static expert_field ei_eiss_unknown_descriptor = EI_INIT; static expert_field ei_eiss_section_number = EI_INIT; static expert_field ei_eiss_application_type = EI_INIT; static expert_field ei_eiss_invalid_reserved_bits = EI_INIT; #define MPEG_SECT_SYNTAX_INDICATOR_MASK 0x8000 #define MPEG_SECT_RESERVED_MASK 0x7000 #define MPEG_SECT_LENGTH_MASK 0x0FFF static const value_string eiss_descriptor_values[] = { { 0xe0, "ETV Application Information Descriptor" }, { 0xe1, "ETV Media Time Descriptor" }, { 0xe2, "ETV Stream Event Descriptor" }, { 0, NULL } }; static const range_string application_id_values[] = { { 0x0000, 0x3fff, "Unsigned Application" }, { 0x4000, 0x3fff, "Signed Application" }, { 0x8000, 0xfffd, "Reserved by DVB" }, { 0xfffe, 0xfffe, "Wildcard for signed applications of an organisation" }, { 0xffff, 0xffff, "Wildcard for all applications of an organisation" }, { 0, 0, NULL } }; static const range_string aid_control_code_values[] = { { 0x00, 0x00, "Reserved" }, { 0x01, 0x01, "AUTOSTART" }, { 0x02, 0x02, "PRESENT" }, { 0x03, 0x03, "DESTROY" }, { 0x04, 0xff, "Reserved" }, { 0, 0, NULL } }; static guint dissect_etv_bif_platform_ids(tvbuff_t *tvb, proto_tree *tree, guint offset) { proto_tree *platform_tree; platform_tree = proto_tree_add_subtree(tree, tvb, offset, 15, ett_eiss_platform_id, NULL, "Platform Id"); proto_tree_add_item(platform_tree, hf_pdtHWManufacturer, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; proto_tree_add_item(platform_tree, hf_pdtHWModel, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(platform_tree, hf_pdtHWVersionMajor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(platform_tree, hf_pdtHWVersionMinor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(platform_tree, hf_pdtSWManufacturer, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; proto_tree_add_item(platform_tree, hf_pdtSWModel, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(platform_tree, hf_pdtSWVersionMajor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(platform_tree, hf_pdtSWVersionMinor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(platform_tree, hf_pdtProfile, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; return 15; } static guint dissect_eiss_descriptors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint offset) { proto_tree *sub_tree; guint tag; tag = tvb_get_guint8(tvb, offset); if (0xe0 == tag) { guint total_length; total_length = tvb_get_guint8(tvb, offset+1); sub_tree = proto_tree_add_subtree(tree, tvb, offset, (2+total_length), ett_eiss_desc, NULL, "ETV Application Information Descriptor"); proto_tree_add_item(sub_tree, hf_eiss_descriptor_tag, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_descriptor_length, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_app_control_code, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_app_version_major, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_app_version_minor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_max_proto_version_major, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_max_proto_version_minor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_test_flag, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_aid_reserved, tvb, offset, 3, ENC_BIG_ENDIAN); offset += 3; proto_tree_add_item(sub_tree, hf_eiss_aid_priority, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_irl_type, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(sub_tree, hf_eiss_irl_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(sub_tree, hf_eiss_irl_string, tvb, offset, 2, ENC_ASCII|ENC_BIG_ENDIAN); return (2+total_length); } else if (0xe1 == tag) { sub_tree = proto_tree_add_subtree(tree, tvb, offset, 6, ett_eiss_desc, NULL, "ETV Media Time Descriptor"); proto_tree_add_item(sub_tree, hf_eiss_descriptor_tag, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_descriptor_length, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_mtd_time_value, tvb, offset, 4, ENC_BIG_ENDIAN); return 6; } else if (0xe2 == tag) { guint tmp; tvbuff_t *payload; tmp = tvb_get_ntohs(tvb, offset+1); sub_tree = proto_tree_add_subtree(tree, tvb, offset, (3+tmp), ett_eiss_desc, NULL, "ETV Stream Event Descriptor"); proto_tree_add_item(sub_tree, hf_eiss_descriptor_tag, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(sub_tree, hf_eiss_sed_reserved, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(sub_tree, hf_eiss_sed_descriptor_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(sub_tree, hf_eiss_sed_time_value, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; payload = tvb_new_subset_length(tvb, offset, tmp-4); call_data_dissector(payload, pinfo, sub_tree); return (3+tmp); } else { proto_tree_add_expert(tree, pinfo, &ei_eiss_unknown_descriptor, tvb, offset, -1); /* skip the rest of the section... for now */ return 1000; } } static int dissect_eiss(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { guint offset = 0, packet_length, sect_len; proto_item *ti; proto_item *pi; proto_tree *eiss_tree; proto_item *items[PACKET_MPEG_SECT_PI__SIZE]; gboolean ssi; guint reserved; guint8 reserved2; guint8 sect_num, last_sect_num; guint16 eiss_application_type; guint8 platform_id_length; col_set_str(pinfo->cinfo, COL_PROTOCOL, "EISS"); ti = proto_tree_add_item(tree, proto_eiss, tvb, offset, -1, ENC_NA); eiss_tree = proto_item_add_subtree(ti, ett_eiss); offset += packet_mpeg_sect_header_extra(tvb, offset, eiss_tree, §_len, &reserved, &ssi, items); packet_length = sect_len + 3 - 4; /* + for the header, - for the crc */ if (FALSE != ssi) { proto_item *msg_error; msg_error = items[PACKET_MPEG_SECT_PI__SSI]; PROTO_ITEM_SET_GENERATED(msg_error); expert_add_info(pinfo, msg_error, &ei_eiss_invalid_section_syntax_indicator); } if (0 != reserved) { proto_item *msg_error; msg_error = items[PACKET_MPEG_SECT_PI__RESERVED]; PROTO_ITEM_SET_GENERATED(msg_error); expert_add_info_format(pinfo, msg_error, &ei_eiss_invalid_reserved_bits, "Invalid reserved1 bits (should all be 0)"); } if (1021 < sect_len) { proto_item *msg_error; msg_error = items[PACKET_MPEG_SECT_PI__LENGTH]; PROTO_ITEM_SET_GENERATED(msg_error); expert_add_info(pinfo, msg_error, &ei_eiss_invalid_section_length); } reserved2 = tvb_get_guint8(tvb, offset); pi = proto_tree_add_item(eiss_tree, hf_eiss_reserved2, tvb, offset, 1, ENC_BIG_ENDIAN); if (0 != reserved2) { expert_add_info_format(pinfo, pi, &ei_eiss_invalid_reserved_bits, "Invalid reserved2 bits (should all be 0)"); } offset++; sect_num = tvb_get_guint8(tvb, offset); last_sect_num = tvb_get_guint8(tvb, offset + 1); pi = proto_tree_add_item(eiss_tree, hf_eiss_section_number, tvb, offset, 1, ENC_BIG_ENDIAN); if (last_sect_num < sect_num) { expert_add_info(pinfo, pi, &ei_eiss_section_number); } offset++; proto_tree_add_item(eiss_tree, hf_eiss_last_section_number, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(eiss_tree, hf_eiss_protocol_version_major, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; proto_tree_add_item(eiss_tree, hf_eiss_protocol_version_minor, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; eiss_application_type = tvb_get_ntohs(tvb, offset); pi = proto_tree_add_item(eiss_tree, hf_eiss_application_type, tvb, offset, 2, ENC_BIG_ENDIAN); if (8 != eiss_application_type) { expert_add_info(pinfo, pi, &ei_eiss_application_type); } offset += 2; proto_tree_add_item(eiss_tree, hf_eiss_organisation_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(eiss_tree, hf_eiss_application_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; platform_id_length = tvb_get_guint8(tvb, offset); pi = proto_tree_add_item(eiss_tree, hf_eiss_platform_id_length, tvb, offset, 1, ENC_BIG_ENDIAN); if (0 != platform_id_length % 15) { expert_add_info(pinfo, pi, &ei_eiss_platform_id_length); } offset++; while (0 < platform_id_length) { guint tmp; tmp = dissect_etv_bif_platform_ids(tvb, eiss_tree, offset); offset += tmp; if (platform_id_length < tmp) { platform_id_length = 0; /* error */ } else { platform_id_length -= tmp; } } if (0 < packet_length) { proto_tree *eiss_desc_tree; eiss_desc_tree = proto_tree_add_subtree(eiss_tree, tvb, offset, packet_length-offset, ett_eiss_desc, NULL, "EISS Descriptor(s)"); while (offset < packet_length) { offset += dissect_eiss_descriptors(tvb, pinfo, eiss_desc_tree, offset); } } packet_mpeg_sect_crc(tvb, pinfo, eiss_tree, 0, sect_len - 1); return tvb_captured_length(tvb); } void proto_register_eiss(void) { static hf_register_info hf[] = { { &hf_eiss_reserved2, { "Reserved", "eiss.reserved", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_section_number, { "Section Number", "eiss.sect_num", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_eiss_last_section_number, { "Last Section Number", "eiss.last_sect_num", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_eiss_protocol_version_major, { "Major Version Number", "eiss.version_major", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_protocol_version_minor, { "Minor Version Number", "eiss.version_minor", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_application_type, { "Application Type", "eiss.app_type", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_organisation_id, { "Organisation Id", "eiss.org_id", FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_application_id, { "Application Id", "eiss.app_id", FT_UINT16, BASE_HEX|BASE_RANGE_STRING, RVALS(application_id_values), 0, NULL, HFILL } }, { &hf_eiss_platform_id_length, { "Platform Id Length", "eiss.platform_id_length", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_pdtHWManufacturer, { "Platform Hardware Manufacturer", "eiss.plat_hw_man", FT_UINT24, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtHWModel, { "Platform Hardware Model", "eiss.plat_hw_model", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtHWVersionMajor, { "Platform Hardware Major Version", "eiss.plat_hw_major", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtHWVersionMinor, { "Platform Hardware Minor Version", "eiss.plat_hw_minor", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtSWManufacturer, { "Platform Software Manufacturer", "eiss.plat_sw_man", FT_UINT24, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtSWModel, { "Platform Software Model", "eiss.plat_sw_model", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtSWVersionMajor, { "Platform Software Major Version", "eiss.plat_sw_major", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtSWVersionMinor, { "Platform Software Minor Version", "eiss.plat_sw_minor", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_pdtProfile, { "Platform Profile", "eiss.plat_profile", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_descriptor_tag, { "EISS Descriptor Tag", "eiss.desc.tag", FT_UINT8, BASE_HEX, VALS(eiss_descriptor_values), 0, NULL, HFILL } }, { &hf_eiss_descriptor_length, { "Descriptor Length", "eiss.desc.length", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_app_control_code, { "Application Control Code", "eiss.aid.app_control_code", FT_UINT8, BASE_HEX|BASE_RANGE_STRING, RVALS(aid_control_code_values), 0, NULL, HFILL } }, { &hf_eiss_aid_app_version_major, { "Application Version Major", "eiss.aid.app_version_major", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_app_version_minor, { "Application Version Minor", "eiss.aid.app_version_minor", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_max_proto_version_major, { "Max Protocol Version Major", "eiss.aid.max_proto_version_major", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_max_proto_version_minor, { "Max Protocol Version Minor", "eiss.aid.max_proto_version_minor", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_test_flag, { "Application Test Flag", "eiss.aid.test_flag", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_reserved, { "Reserved", "eiss.aid.reserved", FT_UINT24, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_aid_priority, { "Application Priority", "eiss.aid.priority", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_eiss_irl_type, { "Initial Resource Locator Type", "eiss.aid.irl.type", FT_UINT16, BASE_HEX, NULL, 0xfc00, NULL, HFILL } }, { &hf_eiss_irl_length, { "Initial Resource Locator Length", "eiss.aid.irl.length", FT_UINT16, BASE_DEC, NULL, 0x03ff, NULL, HFILL } }, { &hf_eiss_irl_string, { "Initial Resource Locator String", "eiss.aid.irl.string", FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } }, { &hf_eiss_mtd_time_value, { "Time Value (ms)", "eiss.mtd.time_value", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_eiss_sed_reserved, { "Reserved", "eiss.sed.reserved", FT_UINT16, BASE_DEC, NULL, 0xf000, NULL, HFILL } }, { &hf_eiss_sed_descriptor_length, { "Descriptor Length", "eiss.desc.length", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL } }, { &hf_eiss_sed_time_value, { "Time Value (ms)", "eiss.sed.time_value", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } } }; static gint *ett[] = { &ett_eiss, &ett_eiss_platform_id, &ett_eiss_desc, }; static ei_register_info ei[] = { { &ei_eiss_unknown_descriptor, { "eiss.unknown_descriptor", PI_MALFORMED, PI_ERROR, "Unknown Descriptor", EXPFILL }}, { &ei_eiss_invalid_section_syntax_indicator, { "eiss.invalid_section_syntax_indicator", PI_MALFORMED, PI_ERROR, "Invalid section_syntax_indicator (should be 0)", EXPFILL }}, { &ei_eiss_invalid_reserved_bits, { "eiss.invalid_reserved_bits", PI_MALFORMED, PI_ERROR, "Invalid reserved bits", EXPFILL }}, { &ei_eiss_invalid_section_length, { "eiss.invalid_section_length", PI_MALFORMED, PI_ERROR, "Invalid section_length (must not exceed 1021)", EXPFILL }}, { &ei_eiss_section_number, { "eiss.sect_num.invalid", PI_MALFORMED, PI_ERROR, "Invalid section_number (must be <= last_section_number)", EXPFILL }}, { &ei_eiss_application_type, { "eiss.app_type.invalid", PI_MALFORMED, PI_ERROR, "Invalid application_type (must be 0x0008)", EXPFILL }}, { &ei_eiss_platform_id_length, { "eiss.platform_id_length.invalid", PI_MALFORMED, PI_ERROR, "Invalid platform_id_length (must be a multiple of sizeof(etv_bif_platform_ids) == 15)", EXPFILL }}, }; expert_module_t* expert_eiss; proto_eiss = proto_register_protocol("ETV-AM EISS Section", "ETV-AM EISS", "eiss"); proto_register_field_array(proto_eiss, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_eiss = expert_register_protocol(proto_eiss); expert_register_field_array(expert_eiss, ei, array_length(ei)); } void proto_reg_handoff_eiss(void) { dissector_handle_t eiss_handle; eiss_handle = create_dissector_handle(dissect_eiss, proto_eiss); dissector_add_uint("mpeg_sect.tid", EISS_SECTION_TID, eiss_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: */