From 796819c955b9dd508d73bb640d56c2625f866862 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Dr=2E=20Lars=20V=C3=B6lker?= Date: Thu, 15 Jul 2021 17:41:50 +0200 Subject: [PATCH] BLF: Support for BLF file format This patch adds first support for the BLF file format. --- docbook/release-notes.adoc | 1 + epan/dissectors/CMakeLists.txt | 1 + epan/dissectors/file-blf.c | 553 +++++++++++ wiretap/CMakeLists.txt | 1 + wiretap/blf.c | 1567 ++++++++++++++++++++++++++++++++ wiretap/blf.h | 473 ++++++++++ wiretap/file_access.c | 7 +- wiretap/mime_file.c | 4 +- 8 files changed, 2604 insertions(+), 3 deletions(-) create mode 100644 epan/dissectors/file-blf.c create mode 100644 wiretap/blf.c create mode 100644 wiretap/blf.h diff --git a/docbook/release-notes.adoc b/docbook/release-notes.adoc index 469fd47ea6..cb5e3e5977 100644 --- a/docbook/release-notes.adoc +++ b/docbook/release-notes.adoc @@ -133,6 +133,7 @@ Too many protocols have been updated to list here. // Add one file type per line between the -- delimiters. [commaize] -- +BLF support -- // === New and Updated Capture Interfaces support diff --git a/epan/dissectors/CMakeLists.txt b/epan/dissectors/CMakeLists.txt index 9640976237..534d64bef3 100644 --- a/epan/dissectors/CMakeLists.txt +++ b/epan/dissectors/CMakeLists.txt @@ -639,6 +639,7 @@ set(DISSECTOR_HEADER_FILES ) set(DISSECTOR_SRC + ${CMAKE_CURRENT_SOURCE_DIR}/file-blf.c ${CMAKE_CURRENT_SOURCE_DIR}/file-btsnoop.c ${CMAKE_CURRENT_SOURCE_DIR}/file-elf.c ${CMAKE_CURRENT_SOURCE_DIR}/file-file.c diff --git a/epan/dissectors/file-blf.c b/epan/dissectors/file-blf.c new file mode 100644 index 0000000000..9234bf7041 --- /dev/null +++ b/epan/dissectors/file-blf.c @@ -0,0 +1,553 @@ +/* file-blf.c + * BLF File Format. + * By Dr. Lars Voelker + * Copyright 2020-2021 Dr. Lars Voelker + * + * Wireshark - Network traffic analyzer + * By Gerald Combs + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This dissector allows to parse BLF files. + */ + + /* + * The following was used as a reference for the file format: + * https://bitbucket.org/tobylorenz/vector_blf + * The repo above includes multiple examples files as well. + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include + +static int proto_blf = -1; + +static int hf_blf_file_header = -1; +static int hf_blf_file_header_magic = -1; +static int hf_blf_file_header_length = -1; +static int hf_blf_file_header_api = -1; +static int hf_blf_file_header_app = -1; +static int hf_blf_file_header_comp_level = -1; +static int hf_blf_file_header_app_major = -1; +static int hf_blf_file_header_app_minor = -1; +static int hf_blf_file_header_len_comp = -1; +static int hf_blf_file_header_len_uncomp = -1; +static int hf_blf_file_header_obj_count = -1; +static int hf_blf_file_header_app_build = -1; +static int hf_blf_file_header_start_date = -1; +static int hf_blf_file_header_end_date = -1; +static int hf_blf_file_header_restore_point_offset = -1; + +static int hf_blf_lobj = -1; +static int hf_blf_lobj_hdr = -1; +static int hf_blf_lobj_magic = -1; +static int hf_blf_lobj_hdr_len = -1; +static int hf_blf_lobj_hdr_type = -1; +static int hf_blf_lobj_obj_len = -1; +static int hf_blf_lobj_obj_type = -1; +static int hf_blf_lobj_hdr_remains = -1; +static int hf_blf_lobj_payload = -1; + +static int hf_blf_cont_comp_method = -1; +static int hf_blf_cont_res1 = -1; +static int hf_blf_cont_res2 = -1; +static int hf_blf_cont_uncomp_size = -1; +static int hf_blf_cont_res4 = -1; +static int hf_blf_cont_payload = -1; + +static gint ett_blf = -1; +static gint ett_blf_header = -1; +static gint ett_blf_obj = -1; +static gint ett_blf_obj_header = -1; +static gint ett_blf_logcontainer_payload = -1; + +static const value_string blf_object_names[] = { + { BLF_OBJTYPE_UNKNOWN, "Unknown" }, + { BLF_OBJTYPE_CAN_MESSAGE, "CAN Message" }, + { BLF_OBJTYPE_CAN_ERROR, "CAN Error" }, + { BLF_OBJTYPE_CAN_OVERLOAD, "CAN Overload" }, + { BLF_OBJTYPE_CAN_STATISTIC, "CAN Statistics" }, + { BLF_OBJTYPE_APP_TRIGGER, "App Trigger" }, + { BLF_OBJTYPE_ENV_INTEGER, "Env Integer" }, + { BLF_OBJTYPE_ENV_DOUBLE, "Env Double" }, + { BLF_OBJTYPE_ENV_STRING, "Env String" }, + { BLF_OBJTYPE_ENV_DATA, "Env Data" }, + { BLF_OBJTYPE_LOG_CONTAINER, "Log Container" }, + { BLF_OBJTYPE_LIN_MESSAGE, "LIN Message" }, + { BLF_OBJTYPE_LIN_CRC_ERROR, "LIN CRC Error" }, + { BLF_OBJTYPE_LIN_DLC_INFO, "LIN DLC Info" }, + { BLF_OBJTYPE_LIN_RCV_ERROR, "LIN Receive Error" }, + { BLF_OBJTYPE_LIN_SND_ERROR, "LIN Send Error" }, + { BLF_OBJTYPE_LIN_SLV_TIMEOUT, "LIN Slave Timeout" }, + { BLF_OBJTYPE_LIN_SCHED_MODCH, "LIN Schedule Mode Change" }, + { BLF_OBJTYPE_LIN_SYN_ERROR, "LIN Sync Error" }, + { BLF_OBJTYPE_LIN_BAUDRATE, "LIN Baudrate" }, + { BLF_OBJTYPE_LIN_SLEEP, "LIN Sleep" }, + { BLF_OBJTYPE_LIN_WAKEUP, "LIN Wakeup" }, + { BLF_OBJTYPE_MOST_SPY, "MOST Spy" }, + { BLF_OBJTYPE_MOST_CTRL, "MOST Control" }, + { BLF_OBJTYPE_MOST_LIGHTLOCK, "MOST Light Lock" }, + { BLF_OBJTYPE_MOST_STATISTIC, "MOST Statistics" }, + { BLF_OBJTYPE_FLEXRAY_DATA, "FlexRay Data" }, + { BLF_OBJTYPE_FLEXRAY_SYNC, "FlexRay Sync" }, + { BLF_OBJTYPE_CAN_DRIVER_ERROR, "CAN Driver Error" }, + { BLF_OBJTYPE_MOST_PKT, "MOST Packet" }, + { BLF_OBJTYPE_MOST_PKT2, "MOST Packet 2" }, + { BLF_OBJTYPE_MOST_HWMODE, "MOST Hardware Mode" }, + { BLF_OBJTYPE_MOST_REG, "MOST Register Data" }, + { BLF_OBJTYPE_MOST_GENREG, "MOST Register Data" }, + { BLF_OBJTYPE_MOST_NETSTATE, "MOST Net State" }, + { BLF_OBJTYPE_MOST_DATALOST, "MOST Data Lost" }, + { BLF_OBJTYPE_MOST_TRIGGER, "MOST Trigger" }, + { BLF_OBJTYPE_FLEXRAY_CYCLE, "FlexRay Cycle" }, + { BLF_OBJTYPE_FLEXRAY_MESSAGE, "FlexRay Message" }, + { BLF_OBJTYPE_LIN_CHECKSUM_INFO, "LIN Checksum Info" }, + { BLF_OBJTYPE_LIN_SPIKE_EVENT, "LIN Spike Event" }, + { BLF_OBJTYPE_CAN_DRIVER_SYNC, "CAN Driver Sync" }, + { BLF_OBJTYPE_FLEXRAY_STATUS, "FlexRay Status" }, + { BLF_OBJTYPE_GPS_EVENT, "GPS Event" }, + { BLF_OBJTYPE_FLEXRAY_ERROR, "FlexRay Error" }, + { BLF_OBJTYPE_FLEXRAY_STATUS, "FlexRay Status" }, + { BLF_OBJTYPE_FLEXRAY_STARTCYCLE, "FlexRay Start Cycle" }, + { BLF_OBJTYPE_FLEXRAY_RCVMESSAGE, "FlexRay Receive Message" }, + { BLF_OBJTYPE_REALTIMECLOCK, "Realtime Clock" }, + { BLF_OBJTYPE_LIN_STATISTIC, "LIN Statistics" }, + { BLF_OBJTYPE_J1708_MESSAGE, "J1708 Message" }, + { BLF_OBJTYPE_J1708_VIRTUAL_MSG, "J1708 Virtual Message" }, + { BLF_OBJTYPE_LIN_MESSAGE2, "LIN Message 2" }, + { BLF_OBJTYPE_LIN_SND_ERROR2, "LIN Send Error 2" }, + { BLF_OBJTYPE_LIN_SYN_ERROR2, "LIN Sync Error 2" }, + { BLF_OBJTYPE_LIN_CRC_ERROR2, "LIN CRC Error 2" }, + { BLF_OBJTYPE_LIN_RCV_ERROR2, "LIN Receive Error 2" }, + { BLF_OBJTYPE_LIN_WAKEUP2, "LIN Wakeup 2" }, + { BLF_OBJTYPE_LIN_SPIKE_EVENT2, "LIN Spike Event 2" }, + { BLF_OBJTYPE_LIN_LONG_DOM_SIG, "LIN Long Dominant Signal" }, + { BLF_OBJTYPE_APP_TEXT, "Text" }, + { BLF_OBJTYPE_FLEXRAY_RCVMESSAGE_EX, "FlexRay Receive Message Ext" }, + { BLF_OBJTYPE_MOST_STATISTICEX, "MOST Statistics Ext" }, + { BLF_OBJTYPE_MOST_TXLIGHT, "MOST TX Light" }, + { BLF_OBJTYPE_MOST_ALLOCTAB, "MOST Allocation Table" }, + { BLF_OBJTYPE_MOST_STRESS, "MOST Stress" }, + { BLF_OBJTYPE_ETHERNET_FRAME, "Ethernet Frame" }, + { BLF_OBJTYPE_SYS_VARIABLE, "System Variable" }, + { BLF_OBJTYPE_CAN_ERROR_EXT, "CAN Error Ext" }, + { BLF_OBJTYPE_CAN_DRIVER_ERROR_EXT, "CAN Driver Error Ext" }, + { BLF_OBJTYPE_LIN_LONG_DOM_SIG2, "LIN Long Dominant Signal 2" }, + { BLF_OBJTYPE_MOST_150_MESSAGE, "MOST150 Message" }, + { BLF_OBJTYPE_MOST_150_PKT, "MOST150 Packet" }, + { BLF_OBJTYPE_MOST_ETHERNET_PKT, "MOST Ethernet Packet" }, + { BLF_OBJTYPE_MOST_150_MESSAGE_FRAGMENT, "MOST150 Message Fragment" }, + { BLF_OBJTYPE_MOST_150_PKT_FRAGMENT, "MOST150 Packet Fragment" }, + { BLF_OBJTYPE_MOST_ETHERNET_PKT_FRAGMENT, "MOST Ethernet Packet Fragment" }, + { BLF_OBJTYPE_MOST_SYSTEM_EVENT, "MOST System Event" }, + { BLF_OBJTYPE_MOST_150_ALLOCTAB, "MOST150 Allocation Table" }, + { BLF_OBJTYPE_MOST_50_MESSAGE, "MOST50 Message" }, + { BLF_OBJTYPE_MOST_50_PKT, "MOST50 Packet" }, + { BLF_OBJTYPE_CAN_MESSAGE2, "CAN Message 2" }, + { BLF_OBJTYPE_LIN_UNEXPECTED_WAKEUP, "LIN Unexpected Wakeup" }, + { BLF_OBJTYPE_LIN_SHORT_OR_SLOW_RESPONSE, "LIN Short or Slow Response" }, + { BLF_OBJTYPE_LIN_DISTURBANCE_EVENT, "LIN Disturbance" }, + { BLF_OBJTYPE_SERIAL_EVENT, "Serial" }, + { BLF_OBJTYPE_OVERRUN_ERROR, "Overrun Error" }, + { BLF_OBJTYPE_EVENT_COMMENT, "Comment" }, + { BLF_OBJTYPE_WLAN_FRAME, "WLAN Frame" }, + { BLF_OBJTYPE_WLAN_STATISTIC, "WLAN Statistics" }, + { BLF_OBJTYPE_MOST_ECL, "MOST Electric Control Line" }, + { BLF_OBJTYPE_GLOBAL_MARKER, "Global Marker" }, + { BLF_OBJTYPE_AFDX_FRAME, "AFDX Frame" }, + { BLF_OBJTYPE_AFDX_STATISTIC, "AFDX Statistics" }, + { BLF_OBJTYPE_KLINE_STATUSEVENT, "KLINE Status" }, + { BLF_OBJTYPE_CAN_FD_MESSAGE, "CANFD Message" }, + { BLF_OBJTYPE_CAN_FD_MESSAGE_64, "CANFD Message 64" }, + { BLF_OBJTYPE_ETHERNET_RX_ERROR, "Ethernet RX Error" }, + { BLF_OBJTYPE_ETHERNET_STATUS, "Ethernet Status" }, + { BLF_OBJTYPE_CAN_FD_ERROR_64, "CANFD Error 64" }, + { BLF_OBJTYPE_AFDX_STATUS, "AFDX Status" }, + { BLF_OBJTYPE_AFDX_BUS_STATISTIC, "AFDX Bus Statistics" }, + { BLF_OBJTYPE_AFDX_ERROR_EVENT, "AFDX Error" }, + { BLF_OBJTYPE_A429_ERROR, "A429 Error" }, + { BLF_OBJTYPE_A429_STATUS, "A429 Status" }, + { BLF_OBJTYPE_A429_BUS_STATISTIC, "A429 Bus Statistics" }, + { BLF_OBJTYPE_A429_MESSAGE, "A429 Message" }, + { BLF_OBJTYPE_ETHERNET_STATISTIC, "Ethernet Statistics" }, + { BLF_OBJTYPE_TEST_STRUCTURE, "Test Structure" }, + { BLF_OBJTYPE_DIAG_REQUEST_INTERPRETATION, "Diagnostics Request Interpretation" }, + { BLF_OBJTYPE_ETHERNET_FRAME_EX, "Ethernet Frame Ext" }, + { BLF_OBJTYPE_ETHERNET_FRAME_FORWARDED, "Ethernet Frame Forwarded" }, + { BLF_OBJTYPE_ETHERNET_ERROR_EX, "Ethernet Error Ext" }, + { BLF_OBJTYPE_ETHERNET_ERROR_FORWARDED, "Ethernet Error Forwarded" }, + { BLF_OBJTYPE_FUNCTION_BUS, "Function Bus" }, + { BLF_OBJTYPE_DATA_LOST_BEGIN, "Data Lost Begin" }, + { BLF_OBJTYPE_DATA_LOST_END, "Data Lost End" }, + { BLF_OBJTYPE_WATER_MARK_EVENT, "Watermark" }, + { BLF_OBJTYPE_TRIGGER_CONDITION, "Trigger Condition" }, + { BLF_OBJTYPE_CAN_SETTING_CHANGED, "CAN Settings Changed" }, + { BLF_OBJTYPE_DISTRIBUTED_OBJECT_MEMBER, "Distributed Object Member" }, + { BLF_OBJTYPE_ATTRIBUTE_EVENT, "Attribute Event" }, + { 0, NULL } +}; + +static const value_string application_names[] = { + { 0, "Unknown" }, + { 1, "Vector CANalyzer" }, + { 2, "Vector CANoe" }, + { 3, "Vector CANstress" }, + { 4, "Vector CANlog" }, + { 5, "Vector CANape" }, + { 6, "Vector CANcaseXL log" }, + { 7, "Vector Logger Configurator" }, + { 200, "Porsche Logger" }, + { 201, "CAETEC Logger" }, + { 202, "Vector Network Simulator" }, + { 203, "IPETRONIK logger" }, + { 204, "RT PK" }, + { 205, "PikeTec" }, + { 206, "Sparks" }, + { 0, NULL } +}; + + +#define BLF_COMPRESSION_NONE 0 +#define BLF_COMPRESSION_ZLIB 2 + +static const value_string blf_compression_names[] = { + { BLF_COMPRESSION_NONE, "No Compression" }, + { BLF_COMPRESSION_ZLIB, "Compression ZLIB" }, + { 0, NULL } +}; + +void proto_register_file_blf(void); +void proto_reg_handoff_file_blf(void); +static int dissect_blf_next_object(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset); + +#define MAGIC_NUMBER_SIZE 4 +static const guint8 blf_file_magic[MAGIC_NUMBER_SIZE] = { 'L', 'O', 'G', 'G' }; +static const guint8 blf_lobj_magic[MAGIC_NUMBER_SIZE] = { 'L', 'O', 'B', 'J' }; + + +static proto_item * +dissect_blf_header_date(proto_tree *tree, int hf, tvbuff_t *tvb, gint offset, gint length) { + static const value_string weekday_names[] = { + { 0, "Sunday"}, + { 1, "Monday"}, + { 2, "Tuesday"}, + { 3, "Wednesday"}, + { 4, "Thursday"}, + { 5, "Friday"}, + { 6, "Saturday"}, + { 0, NULL } + }; + + guint16 year = tvb_get_guint16(tvb, offset + 0, ENC_LITTLE_ENDIAN); + guint16 month = tvb_get_guint16(tvb, offset + 2, ENC_LITTLE_ENDIAN); + guint16 day_of_week = tvb_get_guint16(tvb, offset + 4, ENC_LITTLE_ENDIAN); + guint16 day = tvb_get_guint16(tvb, offset + 6, ENC_LITTLE_ENDIAN); + guint16 hour = tvb_get_guint16(tvb, offset + 8, ENC_LITTLE_ENDIAN); + guint16 minute = tvb_get_guint16(tvb, offset + 10, ENC_LITTLE_ENDIAN); + guint16 sec = tvb_get_guint16(tvb, offset + 12, ENC_LITTLE_ENDIAN); + guint16 ms = tvb_get_guint16(tvb, offset + 14, ENC_LITTLE_ENDIAN); + + header_field_info *hfinfo = proto_registrar_get_nth(hf); + + return proto_tree_add_bytes_format(tree, hf, tvb, offset, length, NULL, + "%s: %s %d-%02d-%02d %02d:%02d:%02d.%03d", + hfinfo->name, + val_to_str(day_of_week, weekday_names, "%d"), + year, month, day, hour, minute, sec, ms); +} + +static proto_item * +dissect_blf_api_version(proto_tree *tree, int hf, tvbuff_t *tvb, gint offset, gint length) { + guint8 major = tvb_get_guint8(tvb, offset + 0); + guint8 minor = tvb_get_guint8(tvb, offset + 1); + guint8 build = tvb_get_guint8(tvb, offset + 2); + guint8 patch = tvb_get_guint8(tvb, offset + 3); + + header_field_info *hfinfo = proto_registrar_get_nth(hf); + + return proto_tree_add_bytes_format(tree, hf, tvb, offset, length, NULL, "%s: %d.%d.%d.%d", + hfinfo->name, major, minor, build, patch); +} + +static int +dissect_blf_lobj(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset_orig) { + proto_item *ti_root = NULL; + proto_item *ti = NULL; + proto_tree *objtree = NULL; + proto_tree *subtree = NULL; + volatile gint offset = offset_orig; + tvbuff_t *sub_tvb; + + guint hdr_length = tvb_get_guint16(tvb, offset_orig + 4, ENC_LITTLE_ENDIAN); + guint obj_length; + guint obj_type; + guint32 comp_method; + + /* this should never happen since we should only be called with at least 16 Bytes present */ + if (tvb_captured_length_remaining(tvb, offset_orig) < 16) { + return tvb_captured_length_remaining(tvb, offset_orig); + } + + ti_root = proto_tree_add_item(tree, hf_blf_lobj, tvb, offset, -1, ENC_NA); + objtree = proto_item_add_subtree(ti_root, ett_blf_obj); + + ti = proto_tree_add_item(objtree, hf_blf_lobj_hdr, tvb, offset, hdr_length, ENC_NA); + subtree = proto_item_add_subtree(ti, ett_blf_obj); + + proto_tree_add_item(subtree, hf_blf_lobj_magic, tvb, offset, 4, ENC_NA); + offset += 4; + proto_tree_add_item(subtree, hf_blf_lobj_hdr_len, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + proto_tree_add_item(subtree, hf_blf_lobj_hdr_type, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + proto_tree_add_item_ret_uint(subtree, hf_blf_lobj_obj_len, tvb, offset, 4, ENC_LITTLE_ENDIAN, &obj_length); + offset += 4; + proto_tree_add_item_ret_uint(subtree, hf_blf_lobj_obj_type, tvb, offset, 4, ENC_LITTLE_ENDIAN, &obj_type); + offset += 4; + + /* check if the whole object is present or if it was truncated */ + if (tvb_captured_length_remaining(tvb, offset_orig) < (gint)obj_length) { + proto_item_set_end(ti_root, tvb, offset_orig + tvb_captured_length_remaining(tvb, offset_orig)); + proto_item_append_text(ti_root, " TRUNCATED"); + return tvb_captured_length_remaining(tvb, offset_orig); + } + + proto_item_set_end(ti_root, tvb, offset_orig + obj_length); + proto_item_append_text(ti_root, " (%s)", val_to_str(obj_type, blf_object_names, "%d")); + + switch (obj_type) { + case BLF_OBJTYPE_LOG_CONTAINER: + proto_tree_add_item_ret_uint(objtree, hf_blf_cont_comp_method, tvb, offset, 2, ENC_LITTLE_ENDIAN, &comp_method); + offset += 2; + proto_tree_add_item(objtree, hf_blf_cont_res1, tvb, offset, 2, ENC_LITTLE_ENDIAN); + offset += 2; + proto_tree_add_item(objtree, hf_blf_cont_res2, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + proto_tree_add_item(objtree, hf_blf_cont_uncomp_size, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + proto_tree_add_item(objtree, hf_blf_cont_res4, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + if (comp_method == BLF_COMPRESSION_NONE) { + sub_tvb = tvb_new_subset_length_caplen(tvb, offset, offset_orig + obj_length - offset, offset_orig + obj_length - offset); + } else { + sub_tvb = tvb_child_uncompress(tvb, tvb, offset, offset_orig + obj_length - offset); + if (sub_tvb) { + add_new_data_source(pinfo, sub_tvb, "Decompressed Data"); + } + } + + /* TODO: actually the objects might overlap containers, which we do not consider here... */ + if (sub_tvb) { + guint offset_sub = 0; + ti = proto_tree_add_item(objtree, hf_blf_cont_payload, sub_tvb, 0, offset_orig + obj_length - offset, ENC_NA); + subtree = proto_item_add_subtree(ti, ett_blf_logcontainer_payload); + + guint tmp = 42; + while ((offset_sub + 16 <= offset_orig + obj_length - offset) && (tmp > 0)) { + tmp = dissect_blf_next_object(sub_tvb, pinfo, subtree, offset_sub); + offset_sub += tmp; + } + } + break; + default: + if (offset - offset_orig < (gint)hdr_length) { + proto_tree_add_item(subtree, hf_blf_lobj_hdr_remains, tvb, offset, hdr_length - (offset - offset_orig), ENC_NA); + offset = offset_orig + hdr_length; + } + + proto_tree_add_item(objtree, hf_blf_lobj_payload, tvb, offset, obj_length - hdr_length, ENC_NA); + offset = offset_orig + obj_length; + break; + } + + return (gint)obj_length; +} + +static int +dissect_blf_next_object(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset) { + gint offset_orig = offset; + + while (tvb_captured_length_remaining(tvb, offset) >= 16) { + if (!tvb_memeql(tvb, offset, blf_lobj_magic, MAGIC_NUMBER_SIZE) == 0) { + offset += 1; + } else { + int bytes_parsed = dissect_blf_lobj(tvb, pinfo, tree, offset); + if (bytes_parsed <= 0) { + return 0; + } else { + offset += bytes_parsed; + } + } + } + + return offset - offset_orig; +} + + +static int +dissect_blf(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { + volatile gint offset = 0; + proto_tree *blf_tree; + proto_tree *subtree; + proto_item *ti; + guint length; + + if (tvb_captured_length(tvb) < 8 || !tvb_memeql(tvb, 0, blf_file_magic, MAGIC_NUMBER_SIZE) == 0) { + /* does not start with LOGG, so this is not BLF it seems */ + return 0; + } + + ti = proto_tree_add_item(tree, proto_blf, tvb, offset, -1, ENC_NA); + blf_tree = proto_item_add_subtree(ti, ett_blf); + length = tvb_get_guint32(tvb, 4, ENC_LITTLE_ENDIAN); + + ti = proto_tree_add_item(blf_tree, hf_blf_file_header, tvb, offset, length, ENC_NA); + subtree = proto_item_add_subtree(ti, ett_blf_header); + + proto_tree_add_item(subtree, hf_blf_file_header_magic, tvb, offset, 4, ENC_NA); + offset += 4; + proto_tree_add_item(subtree, hf_blf_file_header_length, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + dissect_blf_api_version(subtree, hf_blf_file_header_api, tvb, offset, 4); + offset += 4; + proto_tree_add_item(subtree, hf_blf_file_header_app, tvb, offset, 1, ENC_NA); + offset += 1; + proto_tree_add_item(subtree, hf_blf_file_header_comp_level, tvb, offset, 1, ENC_NA); + offset += 1; + proto_tree_add_item(subtree, hf_blf_file_header_app_major, tvb, offset, 1, ENC_NA); + offset += 1; + proto_tree_add_item(subtree, hf_blf_file_header_app_minor, tvb, offset, 1, ENC_NA); + offset += 1; + proto_tree_add_item(subtree, hf_blf_file_header_len_comp, tvb, offset, 8, ENC_LITTLE_ENDIAN); + offset += 8; + proto_tree_add_item(subtree, hf_blf_file_header_len_uncomp, tvb, offset, 8, ENC_LITTLE_ENDIAN); + offset += 8; + proto_tree_add_item(subtree, hf_blf_file_header_obj_count, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + proto_tree_add_item(subtree, hf_blf_file_header_app_build, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 4; + dissect_blf_header_date(subtree, hf_blf_file_header_start_date, tvb, offset, 16); + offset += 16; + dissect_blf_header_date(subtree, hf_blf_file_header_end_date, tvb, offset, 16); + offset += 16; + proto_tree_add_item(subtree, hf_blf_file_header_restore_point_offset, tvb, offset, 4, ENC_LITTLE_ENDIAN); + offset += 8; + + offset += dissect_blf_next_object(tvb, pinfo, blf_tree, offset); + + return offset; +} + +static gboolean +dissect_blf_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { + return dissect_blf(tvb, pinfo, tree, NULL) > 0; +} + +void +proto_register_file_blf(void) { + static hf_register_info hf[] = { + { &hf_blf_file_header, + { "File Header", "blf.file_header", FT_NONE, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_magic, + { "Magic", "blf.file_header.magic", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_length, + { "Header Length", "blf.file_header.length", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_api, + { "API Version", "blf.file_header.api", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_app, + { "Application", "blf.file_header.application", FT_UINT8, BASE_DEC, VALS(application_names), 0x00, NULL, HFILL }}, + { &hf_blf_file_header_comp_level, + { "Compression Level", "blf.file_header.compression_level", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_app_major, + { "Application Major Version", "blf.file_header.application_major", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_app_minor, + { "Application Minor Version", "blf.file_header.application_minor", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_len_comp, + { "Length (compressed)", "blf.file_header.length_compressed", FT_UINT64, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_len_uncomp, + { "Length (uncompressed)", "blf.file_header.length_uncompressed", FT_UINT64, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_obj_count, + { "Object Count", "blf.file_header.object_count", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_app_build, + { "Application Build", "blf.file_header.application_build", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_start_date, + { "Start Date", "blf.file_header.start_date", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_end_date, + { "End Date", "blf.file_header.end_date", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_file_header_restore_point_offset, + { "Restore Point Offset", "blf.file_header.restore_point_offset", FT_UINT64, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + + { &hf_blf_lobj, + { "Object", "blf.object", FT_NONE, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_hdr, + { "Object Header", "blf.object.header", FT_NONE, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_magic, + { "Magic", "blf.object.header.magic", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_hdr_len, + { "Header Length", "blf.object.header.header_length", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_hdr_type, + { "Header Type", "blf.object.header.header_type", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_obj_len, + { "Object Length", "blf.object.header.object_length", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_obj_type, + { "Object Type", "blf.object.header.object_type", FT_UINT32, BASE_DEC, VALS(blf_object_names), 0x00, NULL, HFILL }}, + { &hf_blf_lobj_hdr_remains, + { "Header unparsed", "blf.object.header.unparsed", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_lobj_payload, + { "Payload", "blf.object.payload", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + + { &hf_blf_cont_comp_method, + { "Compression Method", "blf.object.logcontainer.compression_method", FT_UINT16, BASE_HEX, VALS(blf_compression_names), 0x00, NULL, HFILL }}, + { &hf_blf_cont_res1, + { "Reserved", "blf.object.logcontainer.res1", FT_UINT16, BASE_HEX, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_cont_res2, + { "Reserved", "blf.object.logcontainer.res2", FT_UINT32, BASE_HEX, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_cont_uncomp_size, + { "Uncompressed Length", "blf.object.logcontainer.uncompressed_length", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_cont_res4, + { "Reserved", "blf.object.logcontainer.res4", FT_UINT32, BASE_HEX, NULL, 0x00, NULL, HFILL }}, + { &hf_blf_cont_payload, + { "Payload", "blf.object.logcontainer.payload", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL }}, + + }; + + static gint *ett[] = { + &ett_blf, + &ett_blf_header, + &ett_blf_obj, + &ett_blf_obj_header, + &ett_blf_logcontainer_payload, + }; + + proto_blf = proto_register_protocol("BLF File Format", "File-BLF", "file-blf"); + proto_register_field_array(proto_blf, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + register_dissector("file-blf", dissect_blf, proto_blf); +} + +void +proto_reg_handoff_file_blf(void) { + heur_dissector_add("wtap_file", dissect_blf_heur, "BLF File", "blf_wtap", proto_blf, HEURISTIC_ENABLE); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local Variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * ex: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ diff --git a/wiretap/CMakeLists.txt b/wiretap/CMakeLists.txt index 40e42e87ce..ded80e4558 100644 --- a/wiretap/CMakeLists.txt +++ b/wiretap/CMakeLists.txt @@ -34,6 +34,7 @@ set(WIRETAP_C_MODULE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/ascendtext.c ${CMAKE_CURRENT_SOURCE_DIR}/atm.c ${CMAKE_CURRENT_SOURCE_DIR}/ber.c + ${CMAKE_CURRENT_SOURCE_DIR}/blf.c ${CMAKE_CURRENT_SOURCE_DIR}/btsnoop.c ${CMAKE_CURRENT_SOURCE_DIR}/busmaster.c ${CMAKE_CURRENT_SOURCE_DIR}/camins.c diff --git a/wiretap/blf.c b/wiretap/blf.c new file mode 100644 index 0000000000..8f0d3a92cd --- /dev/null +++ b/wiretap/blf.c @@ -0,0 +1,1567 @@ +/* blf.c + * + * Wiretap Library + * Copyright (c) 1998 by Gilbert Ramirez + * + * File format support for blf file format + * Copyright (c) 2021 by Dr. Lars Voelker + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + + /* + * The following was used as a reference for the file format: + * https://bitbucket.org/tobylorenz/vector_blf + * The repo above includes multiple examples files as well. + */ + +#include +#include "blf.h" + +#include +#include +#include +#include "file_wrappers.h" +#include "wtap-int.h" + +#ifdef HAVE_ZLIB +#define ZLIB_CONST +#include +#endif /* HAVE_ZLIB */ + +static const guint8 blf_magic[] = { 'L', 'O', 'G', 'G' }; +static const guint8 blf_obj_magic[] = { 'L', 'O', 'B', 'J' }; + +static int blf_file_type_subtype = -1; + +void register_blf(void); + +static gboolean blf_read(wtap *wth, wtap_rec *rec, Buffer *buf, int *err, gchar **err_info, gint64 *data_offset); +static gboolean blf_seek_read(wtap *wth, gint64 seek_off, wtap_rec* rec, Buffer *buf, int *err, gchar **err_info); +static void blf_close(wtap *wth); + +/* + * The virtual buffer looks like this (skips all headers): + * uncompressed log container data + * uncompressed log container data + * ... + * + * The "real" positions, length, etc. reference this layout and not the file. + * When no compression is used the file is accessed directly. + */ + +typedef struct blf_log_container { + gint64 infile_start_pos; /* start position of log container in file */ + guint64 infile_length; /* length of log container in file */ + guint64 infile_data_start; /* start position of data in log container in file */ + + gint64 real_start_pos; /* decompressed (virtual) start position including header */ + guint64 real_length; /* decompressed length */ + gint64 real_first_object_pos; /* where does the first obj start? */ + guint64 real_leftover_bytes; /* how many bytes are left over for the next container? */ + + guint16 compression_method; /* 0: uncompressed, 2: zlib */ + + unsigned char *real_data; /* cache for decompressed data */ +} blf_log_container_t; + +typedef struct blf_data { + gint64 start_of_last_obj; + gint64 current_real_seek_pos; + + guint current_log_container; + GArray *log_containers; +} blf_t; + +typedef struct blf_params { + wtap *wth; + wtap_rec *rec; + Buffer *buf; + FILE_T fh; + + blf_t *blf_data; +} blf_params_t; + +gboolean blf_read_block(blf_params_t *params, gint64 start_pos, int *err, gchar **err_info); + +void +fix_endianness_blf_date(blf_date_t *date) { + date->year = GUINT16_FROM_LE(date->year); + date->month = GUINT16_FROM_LE(date->month); + date->dayofweek = GUINT16_FROM_LE(date->dayofweek); + date->day = GUINT16_FROM_LE(date->day); + date->hour = GUINT16_FROM_LE(date->hour); + date->mins = GUINT16_FROM_LE(date->mins); + date->sec = GUINT16_FROM_LE(date->sec); + date->ms = GUINT16_FROM_LE(date->ms); +} + +void +fix_endianness_blf_fileheader(blf_fileheader_t *header) { + header->header_length = GUINT32_FROM_LE(header->header_length); + header->len_compressed = GUINT64_FROM_LE(header->len_compressed); + header->len_uncompressed = GUINT64_FROM_LE(header->len_uncompressed); + header->obj_count = GUINT32_FROM_LE(header->obj_count); + header->obj_read = GUINT32_FROM_LE(header->obj_read); + fix_endianness_blf_date(&(header->start_date)); + fix_endianness_blf_date(&(header->end_date)); + header->length3 = GUINT32_FROM_LE(header->length3); +} + +void +fix_endianness_blf_blockheader(blf_blockheader_t *header) { + header->header_length = GUINT16_FROM_LE(header->header_length); + header->header_type = GUINT16_FROM_LE(header->header_type); + header->object_length = GUINT32_FROM_LE(header->object_length); + header->object_type = GUINT32_FROM_LE(header->object_type); +} + +void +fix_endianness_blf_logcontainerheader(blf_logcontainerheader_t *header) { + header->compression_method = GUINT16_FROM_LE(header->compression_method); + header->res1 = GUINT16_FROM_LE(header->res1); + header->res2 = GUINT32_FROM_LE(header->res2); + header->uncompressed_size = GUINT32_FROM_LE(header->uncompressed_size); + header->res4 = GUINT32_FROM_LE(header->res4); +} + +void +fix_endianness_blf_logobjectheader(blf_logobjectheader_t *header) { + header->flags = GUINT32_FROM_LE(header->flags); + header->client_index = GUINT16_FROM_LE(header->client_index); + header->object_version = GUINT16_FROM_LE(header->object_version); + header->object_timestamp = GUINT64_FROM_LE(header->object_timestamp); +} + +void +fix_endianness_blf_ethernetframeheader(blf_ethernetframeheader_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->direction = GUINT16_FROM_LE(header->direction); + header->ethtype = GUINT16_FROM_LE(header->ethtype); + header->tpid = GUINT16_FROM_LE(header->tpid); + header->tci = GUINT16_FROM_LE(header->tci); + header->payloadlength = GUINT16_FROM_LE(header->payloadlength); +} + +void +fix_endianness_blf_ethernetframeheader_ex(blf_ethernetframeheader_ex_t *header) { + header->struct_length = GUINT16_FROM_LE(header->struct_length); + header->flags = GUINT16_FROM_LE(header->flags); + header->channel = GUINT16_FROM_LE(header->channel); + header->hw_channel = GUINT16_FROM_LE(header->hw_channel); + header->frame_duration = GUINT64_FROM_LE(header->frame_duration); + header->frame_checksum = GUINT32_FROM_LE(header->frame_checksum); + header->direction = GUINT16_FROM_LE(header->direction); + header->frame_length = GUINT16_FROM_LE(header->frame_length); + header->frame_handle = GUINT32_FROM_LE(header->frame_handle); + header->error = GUINT32_FROM_LE(header->error); +} + +void +fix_endianness_blf_canmessage(blf_canmessage_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->id = GUINT32_FROM_LE(header->id); +} + +void +fix_endianness_blf_canmessage2_trailer(blf_canmessage2_trailer_t *header) { + header->frameLength_in_ns = GUINT32_FROM_LE(header->frameLength_in_ns); + header->reserved2 = GUINT16_FROM_LE(header->reserved1); +} + +void +fix_endianness_blf_canfdmessage(blf_canfdmessage_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->id = GUINT32_FROM_LE(header->id); + header->frameLength_in_ns = GUINT32_FROM_LE(header->frameLength_in_ns); + header->reservedCanFdMessage2 = GUINT32_FROM_LE(header->reservedCanFdMessage2); +} + +void +fix_endianness_blf_canfdmessage64(blf_canfdmessage64_t *header) { + header->id = GUINT32_FROM_LE(header->id); + header->frameLength_in_ns = GUINT32_FROM_LE(header->frameLength_in_ns); + header->flags = GUINT32_FROM_LE(header->flags); + header->btrCfgArb = GUINT32_FROM_LE(header->btrCfgArb); + header->btrCfgData = GUINT32_FROM_LE(header->btrCfgData); + header->timeOffsetBrsNs = GUINT32_FROM_LE(header->timeOffsetBrsNs); + header->timeOffsetCrcDelNs = GUINT32_FROM_LE(header->timeOffsetCrcDelNs); + header->bitCount = GUINT16_FROM_LE(header->bitCount); + header->crc = GUINT32_FROM_LE(header->crc); +} + +void +fix_endianness_blf_flexraydata(blf_flexraydata_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->messageId = GUINT16_FROM_LE(header->messageId); + header->crc = GUINT16_FROM_LE(header->crc); + header->reservedFlexRayData2 = GUINT16_FROM_LE(header->reservedFlexRayData2); +} + +void +fix_endianness_blf_flexraymessage(blf_flexraymessage_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->fpgaTick = GUINT32_FROM_LE(header->fpgaTick); + header->fpgaTickOverflow = GUINT32_FROM_LE(header->fpgaTickOverflow); + header->clientIndexFlexRayV6Message = GUINT32_FROM_LE(header->clientIndexFlexRayV6Message); + header->clusterTime = GUINT32_FROM_LE(header->clusterTime); + header->frameId = GUINT16_FROM_LE(header->frameId); + header->headerCrc = GUINT16_FROM_LE(header->headerCrc); + header->frameState = GUINT16_FROM_LE(header->frameState); + header->reservedFlexRayV6Message2 = GUINT16_FROM_LE(header->reservedFlexRayV6Message2); +} + +void +fix_endianness_blf_flexrayrcvmessage(blf_flexrayrcvmessage_t *header) { + header->channel = GUINT16_FROM_LE(header->channel); + header->version = GUINT16_FROM_LE(header->version); + header->channelMask = GUINT16_FROM_LE(header->channelMask); + header->dir = GUINT16_FROM_LE(header->dir); + header->clientIndex = GUINT32_FROM_LE(header->clientIndex); + header->clusterNo = GUINT32_FROM_LE(header->clusterNo); + header->frameId = GUINT16_FROM_LE(header->frameId); + header->headerCrc1 = GUINT16_FROM_LE(header->headerCrc1); + header->headerCrc2 = GUINT16_FROM_LE(header->headerCrc2); + header->payloadLength = GUINT16_FROM_LE(header->payloadLength); + header->payloadLengthValid = GUINT16_FROM_LE(header->payloadLengthValid); + header->cycle = GUINT16_FROM_LE(header->cycle); + header->tag = GUINT32_FROM_LE(header->tag); + header->data = GUINT32_FROM_LE(header->data); + header->frameFlags = GUINT32_FROM_LE(header->frameFlags); + header->appParameter = GUINT32_FROM_LE(header->appParameter); +/* this would be extra for ext format: + header->frameCRC = GUINT32_FROM_LE(header->frameCRC); + header->frameLengthInNs = GUINT32_FROM_LE(header->frameLengthInNs); + header->frameId1 = GUINT16_FROM_LE(header->frameId1); + header->pduOffset = GUINT16_FROM_LE(header->pduOffset); + header->blfLogMask = GUINT16_FROM_LE(header->blfLogMask); +*/ +} + +guint64 +blf_timestamp_to_ns(blf_logobjectheader_t *header) { + switch (header->flags) { + case BLF_TIMESTAMP_RESOLUTION_10US: + return 10000 * header->object_timestamp; + break; + + case BLF_TIMESTAMP_RESOLUTION_1NS: + return header->object_timestamp; + break; + + default: + ws_debug("i dont understand the flags 0x%x", header->flags); + return 0; + break; + } +} + +void +blf_init_logcontainer(blf_log_container_t *tmp) { + tmp->infile_start_pos = 0; + tmp->infile_length = 0; + tmp->infile_data_start = 0; + tmp->real_start_pos = 0; + tmp->real_length = 0; + tmp->real_first_object_pos = -1; + tmp->real_leftover_bytes = G_MAXUINT64; + tmp->real_data = NULL; + tmp->compression_method = 0; +} + +void +blf_add_logcontainer(blf_t *blf_data, blf_log_container_t log_container) { + if (blf_data->log_containers == NULL) { + blf_data->log_containers = g_array_sized_new(FALSE, FALSE, sizeof(blf_log_container_t), 1); + blf_data->current_log_container = 0; + } else { + blf_data->current_log_container++; + } + + g_array_append_val(blf_data->log_containers, log_container); +} + +gboolean +blf_get_logcontainer_by_index(blf_t *blf_data, guint index, blf_log_container_t **ret) { + if (blf_data == NULL || blf_data->log_containers == NULL || index >= blf_data->log_containers->len) { + return FALSE; + } + + *ret = &g_array_index(blf_data->log_containers, blf_log_container_t, index); + return TRUE; +} + +gboolean +blf_get_current_logcontainer(blf_t *blf_data, blf_log_container_t **ret) { + return blf_get_logcontainer_by_index(blf_data, blf_data->current_log_container, ret); +} + +gint +blf_number_of_logcontainers(blf_t *blf_data) { + if (blf_data == NULL) { + return -1; + } + if (blf_data->log_containers == NULL) { + return 0; + } + return (gint)blf_data->log_containers->len; +} + +guint64 +blf_get_num_prev_leftover_bytes(blf_t *blf_data) { + if (blf_data->current_log_container == 0) { + return 0; + } else { + blf_log_container_t tmp = g_array_index(blf_data->log_containers, blf_log_container_t, blf_data->current_log_container-1); + return tmp.real_leftover_bytes; + } +} + +gboolean +blf_find_logcontainer_for_address(blf_t *blf_data, gint64 pos, blf_log_container_t **container, gint *container_index) { + blf_log_container_t *tmp; + + if (blf_data == NULL || blf_data->log_containers == NULL) { + return FALSE; + } + + for (guint i = 0; i < blf_data->log_containers->len; i++) { + tmp = &g_array_index(blf_data->log_containers, blf_log_container_t, i); + if (tmp->real_start_pos <= pos && pos < tmp->real_start_pos + (gint64)tmp->real_length) { + *container = tmp; + *container_index = i; + return TRUE; + } + } + + return FALSE; +} + +gboolean +blf_pull_logcontainer_into_memory(blf_params_t *params, guint index_log_container) { + blf_t *blf_data = params->blf_data; + blf_log_container_t tmp; + + if (index_log_container >= blf_data->log_containers->len) { + ws_debug("blf_pull_logcontainer_into_memory: cannot pull an unknown log container into memory"); + return FALSE; + } + + tmp = g_array_index(blf_data->log_containers, blf_log_container_t, index_log_container); + + if (tmp.real_data != NULL) { + return TRUE; + } + + if (tmp.compression_method == BLF_COMPRESSION_ZLIB) { +#ifdef HAVE_ZLIB + int err = 0; + gchar *err_info; + + file_seek(params->fh, tmp.infile_data_start, SEEK_SET, &err); + if (err < 0) { + ws_debug("blf_pull_logcontainer_into_memory: cannot seek to start of log_container"); + return FALSE; + } + + /* pull compressed data into buffer */ + unsigned char *compressed_data = g_try_malloc0(tmp.infile_length); + guint64 data_length = (unsigned int)tmp.infile_length - (tmp.infile_data_start - tmp.infile_start_pos); + if (!wtap_read_bytes_or_eof(params->fh, compressed_data, (unsigned int)data_length, &err, &err_info)) { + ws_debug("blf_pull_logcontainer_into_memory: cannot read compressed data"); + return FALSE; + } + + unsigned char *buf = g_try_malloc0(tmp.real_length); + z_stream infstream; + infstream.zalloc = Z_NULL; + infstream.zfree = Z_NULL; + infstream.opaque = Z_NULL; + + infstream.avail_in = (unsigned int)data_length; + infstream.next_in = compressed_data; + infstream.avail_out = (unsigned int)tmp.real_length; + infstream.next_out = buf; + + // the actual DE-compression work. + inflateInit(&infstream); + inflate(&infstream, Z_NO_FLUSH); + inflateEnd(&infstream); + + tmp.real_data = buf; + g_array_index(blf_data->log_containers, blf_log_container_t, index_log_container) = tmp; + return TRUE; +#else + return FALSE; +#endif + } + + return FALSE; +} + +/* returns position and -1, if compressed or split */ +gint64 +blf_translate_pos(blf_t *blf_data, gint64 pos) { + blf_log_container_t *tmp; + gint container_index; + + if (blf_find_logcontainer_for_address(blf_data, pos, &tmp, &container_index)) { + if (tmp->compression_method == BLF_COMPRESSION_NONE) { + /* this should be the same as pos, as long as infile and real start pos stay the same. */ + return tmp->infile_start_pos + pos - tmp->real_start_pos; + } + } + return -1; +} + +gboolean +blf_read_bytes_or_eof(blf_params_t *params, guint64 real_pos, void *target_buffer, unsigned int count, int *err, gchar **err_info) { + blf_log_container_t *start_container; + blf_log_container_t *end_container; + blf_log_container_t *current_container; + + gint start_container_index = -1; + gint end_container_index = -1; + gint current_container_index = -1; + + unsigned int copied = 0; + unsigned int data_left; + unsigned int start_in_buf; + + unsigned char *buf = (unsigned char *)target_buffer; + + if (!blf_find_logcontainer_for_address(params->blf_data, real_pos, &start_container, &start_container_index)) { + ws_debug("blf_read_bytes_or_eof: cannot read data because start position cannot be mapped"); + return FALSE; + } + if (!blf_find_logcontainer_for_address(params->blf_data, real_pos + count - 1, &end_container, &end_container_index)) { + ws_debug("blf_read_bytes_or_eof: cannot read data because end position cannot be mapped"); + return FALSE; + } + + current_container_index = start_container_index; + current_container = start_container; + start_in_buf = (unsigned int)real_pos - (unsigned int)start_container->real_start_pos; + + switch (start_container->compression_method) { + case BLF_COMPRESSION_NONE: + while (current_container_index <= end_container_index) { + if (!blf_get_logcontainer_by_index(params->blf_data, current_container_index, ¤t_container)) { + ws_debug("blf_read_bytes_or_eof: cannot refresh container"); + return FALSE; + } + + data_left = (unsigned int)(current_container->real_length - start_in_buf); + + if (file_seek(params->fh, current_container->infile_data_start + start_in_buf, SEEK_SET, err) < 0) { + ws_debug("blf_read_bytes_or_eof: cannot seek data"); + return FALSE; + } + + if (data_left < (count - copied)) { + if (!wtap_read_bytes_or_eof(params->fh, buf + copied, data_left, err, err_info)) { + ws_debug("blf_read_bytes_or_eof: cannot read data"); + return FALSE; + } + copied += data_left; + current_container_index++; + start_in_buf = 0; + } else { + if (!wtap_read_bytes_or_eof(params->fh, buf + copied, count - copied, err, err_info)) { + ws_debug("blf_read_bytes_or_eof: cannot read data"); + return FALSE; + } + return TRUE; + } + } + break; + + case BLF_COMPRESSION_ZLIB: + while (current_container_index <= end_container_index) { + if (!blf_pull_logcontainer_into_memory(params, current_container_index)) { + ws_debug("blf_read_bytes_or_eof: cannot pull in container"); + return FALSE; + } + + if (!blf_get_logcontainer_by_index(params->blf_data, current_container_index, ¤t_container)) { + ws_debug("blf_read_bytes_or_eof: cannot refresh container"); + return FALSE; + } + + if (current_container->real_data == NULL) { + ws_debug("blf_read_bytes_or_eof: pulling in container failed hard"); + return FALSE; + } + + data_left = (unsigned int)(current_container->real_length - start_in_buf); + + if (data_left < (count - copied)) { + memcpy(buf + copied, current_container->real_data + start_in_buf, (unsigned int)data_left); + copied += data_left; + current_container_index++; + start_in_buf = 0; + } else { + memcpy(buf + copied, current_container->real_data + start_in_buf, count - copied); + return TRUE; + } + } + break; + + default: + ws_debug("blf_read_bytes_or_eof: unknown compression method"); + return FALSE; + } + + return FALSE; +} + +/* this is only called once on open to figure out the layout of the file */ +gboolean +blf_scan_file_for_logcontainers(blf_params_t *params) { + blf_blockheader_t header; + blf_logcontainerheader_t logcontainer_header; + blf_log_container_t tmp; + + int err; + gchar *err_info; + + guint64 current_start_pos; + guint64 current_real_start = 0; + + while (1) { + current_start_pos = file_tell(params->fh); + + /* Find Object */ + while (1) { + if (!wtap_read_bytes_or_eof(params->fh, &header, sizeof header, &err, &err_info)) { + ws_debug("we found end of file"); + + /* lets ignore some bytes at the end since some implementations think it is ok to add a few zero bytes */ + if (err == WTAP_ERR_SHORT_READ) { + err = 0; + } + + return TRUE; + } + + fix_endianness_blf_blockheader(&header); + + if (memcmp(header.magic, blf_obj_magic, sizeof(blf_obj_magic))) { + ws_debug("object magic is not LOBJ"); + } else { + break; + } + + /* we are moving back and try again but 1 byte later */ + /* TODO: better understand how this paddings works... */ + current_start_pos++; + if (file_seek(params->fh, current_start_pos, SEEK_SET, &err) < 0) { + return FALSE; + } + } + + if (header.header_type != BLF_HEADER_TYPE_DEFAULT) { + ws_debug("unknown header type, I know only BLF_HEADER_TYPE_DEFAULT (1)"); + return FALSE; + } + + switch (header.object_type) { + case BLF_OBJTYPE_LOG_CONTAINER: + /* skip unknown header part if needed */ + if (header.header_length - sizeof(blf_blockheader_t) > 0) { + /* seek over unknown header part */ + if (file_seek(params->fh, current_start_pos + header.header_length, SEEK_SET, &err) < 0) { + ws_debug("cannot seek file for skipping unknown header bytes in log container"); + return FALSE; + } + } + + if (!wtap_read_bytes_or_eof(params->fh, &logcontainer_header, sizeof(blf_logcontainerheader_t), &err, &err_info)) { + ws_debug("not enough bytes for log container header"); + return FALSE; + } + + //tmp = g_malloc(sizeof(blf_log_container_t)); + blf_init_logcontainer(&tmp); + + tmp.infile_start_pos = current_start_pos; + tmp.infile_data_start = file_tell(params->fh); + tmp.infile_length = header.object_length; + + tmp.real_start_pos = current_real_start; + tmp.real_length = logcontainer_header.uncompressed_size; + tmp.compression_method = logcontainer_header.compression_method; + + /* set up next start position */ + current_real_start += logcontainer_header.uncompressed_size; + + if (file_seek(params->fh, current_start_pos + header.object_length, SEEK_SET, &err) < 0) { + ws_debug("cannot seek file for skipping log container bytes"); + return FALSE; + } + + blf_add_logcontainer(params->blf_data, tmp); + + break; + default: + ws_debug("we found a non BLF log container on top level. this is unexpected."); + + /* TODO: maybe create "fake Log Container" for this */ + if (file_seek(params->fh, current_start_pos + header.object_length, SEEK_SET, &err) < 0) { + return FALSE; + } + } + } + + params->blf_data->current_real_seek_pos = 0; + + return TRUE; +} + +void +blf_init_rec(blf_params_t *params, guint64 object_timestamp, int pkt_encap, guint32 channel) { + params->rec->rec_type = REC_TYPE_PACKET; + params->rec->tsprec = WTAP_TSPREC_NSEC; /* there is no 10us, maybe we should update this*/ + params->rec->ts.secs = object_timestamp / (1000 * 1000 * 1000); + params->rec->ts.nsecs = object_timestamp % (1000 * 1000 * 1000); + + params->rec->rec_header.packet_header.pkt_encap = pkt_encap; + params->rec->rec_header.packet_header.interface_id = channel; + params->rec->rec_header.packet_header.drop_count = 0; + params->rec->rec_header.packet_header.packet_id = 0; + params->rec->rec_header.packet_header.interface_queue = 0; + + /* TODO: before we had to remove comments and verdict here to not leak memory but APIs have changed ... */ +} + +gboolean +blf_read_ethernetframe(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_ethernetframeheader_t ethheader; + guint8 tmpbuf[18]; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_ethernetframe: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_ethernetframe: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(blf_ethernetframeheader_t)) { + ws_debug("blf_read_ethernetframe: not enough bytes for ethernet frame header in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, ðheader, sizeof(ethheader), err, err_info)) { + ws_debug("blf_read_ethernetframe: not enough bytes for ethernet frame header in file"); + return FALSE; + } + fix_endianness_blf_ethernetframeheader(ðheader); + + /* + * BLF breaks up and reorders the Ethernet header and VLAN tag fields. + * This is a really bad design and makes this format one of the worst. + * If you want a fast format that keeps your data intact, avoid this format! + * So, lets hope we can reconstruct the original packet successfully. + */ + + tmpbuf[0] = ethheader.dst_addr[0]; + tmpbuf[1] = ethheader.dst_addr[1]; + tmpbuf[2] = ethheader.dst_addr[2]; + tmpbuf[3] = ethheader.dst_addr[3]; + tmpbuf[4] = ethheader.dst_addr[4]; + tmpbuf[5] = ethheader.dst_addr[5]; + tmpbuf[6] = ethheader.src_addr[0]; + tmpbuf[7] = ethheader.src_addr[1]; + tmpbuf[8] = ethheader.src_addr[2]; + tmpbuf[9] = ethheader.src_addr[3]; + tmpbuf[10] = ethheader.src_addr[4]; + tmpbuf[11] = ethheader.src_addr[5]; + + if (ethheader.tpid != 0 && ethheader.tci != 0) { + tmpbuf[12] = (ethheader.tpid & 0xff00) >> 8; + tmpbuf[13] = (ethheader.tpid & 0x00ff); + tmpbuf[14] = (ethheader.tci & 0xff00) >> 8; + tmpbuf[15] = (ethheader.tci & 0x00ff); + tmpbuf[16] = (ethheader.ethtype & 0xff00) >> 8; + tmpbuf[17] = (ethheader.ethtype & 0x00ff); + ws_buffer_assure_space(params->buf, (gsize)18 + ethheader.payloadlength); + ws_buffer_append(params->buf, tmpbuf, (gsize)18); + params->rec->rec_header.packet_header.caplen = ((guint32)18 + ethheader.payloadlength); + params->rec->rec_header.packet_header.len = ((guint32)18 + ethheader.payloadlength); + } else { + tmpbuf[12] = (ethheader.ethtype & 0xff00) >> 8; + tmpbuf[13] = (ethheader.ethtype & 0x00ff); + ws_buffer_assure_space(params->buf, (gsize)14 + ethheader.payloadlength); + ws_buffer_append(params->buf, tmpbuf, (gsize)14); + params->rec->rec_header.packet_header.caplen = ((guint32)14 + ethheader.payloadlength); + params->rec->rec_header.packet_header.len = ((guint32)14 + ethheader.payloadlength); + } + + if (!blf_read_bytes_or_eof(params, data_start + sizeof(blf_ethernetframeheader_t), ws_buffer_end_ptr(params->buf), ethheader.payloadlength, err, err_info)) { + ws_debug("blf_read_ethernetframe: copying ethernet frame failed"); + return FALSE; + } + params->buf->first_free += ethheader.payloadlength; + + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID; + blf_init_rec(params, logheader.object_timestamp, WTAP_ENCAP_ETHERNET, ethheader.channel); + + return TRUE; +} + +gboolean +blf_read_ethernetframe_ext(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_ethernetframeheader_ex_t ethheader; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_ethernetframe_ex: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_ethernetframe_ex: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(blf_ethernetframeheader_ex_t)) { + ws_debug("blf_read_ethernetframe_ex: not enough bytes for ethernet frame header in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, ðheader, sizeof(blf_ethernetframeheader_ex_t), err, err_info)) { + ws_debug("blf_read_ethernetframe_ex: not enough bytes for ethernet frame header in file"); + return FALSE; + } + fix_endianness_blf_ethernetframeheader_ex(ðheader); + + ws_buffer_assure_space(params->buf, ethheader.frame_length); + + if (object_length - (data_start - block_start) - sizeof(blf_ethernetframeheader_ex_t) < ethheader.frame_length) { + ws_debug("blf_read_ethernetframe_ext: frame too short"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start + sizeof(blf_ethernetframeheader_ex_t), ws_buffer_start_ptr(params->buf), ethheader.frame_length, err, err_info)) { + ws_debug("blf_read_ethernetframe_ex: copying ethernet frame failed"); + return FALSE; + } + + blf_init_rec(params, logheader.object_timestamp, WTAP_ENCAP_ETHERNET, ethheader.channel); + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID | WTAP_HAS_INT_QUEUE; + params->rec->rec_header.packet_header.interface_queue = ethheader.hw_channel; + params->rec->rec_header.packet_header.caplen = ethheader.frame_length; + params->rec->rec_header.packet_header.len = ethheader.frame_length; + return TRUE; +} + +static guint8 can_dlc_to_length[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8 }; +static guint8 canfd_dlc_to_length[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 20, 24, 32, 48, 64 }; + +gboolean +blf_can_fill_buf_and_rec(blf_params_t *params, int *err, gchar **err_info, guint32 canid, guint8 payload_length, guint8 payload_length_valid, guint64 start_position, + guint64 object_timestamp, guint32 channel) { + guint8 tmpbuf[8]; + tmpbuf[0] = (canid & 0xff000000) >> 24; + tmpbuf[1] = (canid & 0x00ff0000) >> 16; + tmpbuf[2] = (canid & 0x0000ff00) >> 8; + tmpbuf[3] = (canid & 0x000000ff); + tmpbuf[4] = payload_length; + tmpbuf[5] = 0; + tmpbuf[6] = 0; + tmpbuf[7] = 0; + + ws_buffer_assure_space(params->buf, sizeof(tmpbuf) + payload_length_valid); + ws_buffer_append(params->buf, tmpbuf, sizeof(tmpbuf)); + params->rec->rec_header.packet_header.caplen = sizeof(tmpbuf) + payload_length_valid; + params->rec->rec_header.packet_header.len = sizeof(tmpbuf) + payload_length; + + if (payload_length_valid > 0 && !blf_read_bytes_or_eof(params, start_position, ws_buffer_end_ptr(params->buf), payload_length_valid, err, err_info)) { + ws_debug("blf_can_fill_buf: copying can payload failed"); + return FALSE; + } + params->buf->first_free += payload_length_valid; + + blf_init_rec(params, object_timestamp, WTAP_ENCAP_SOCKETCAN, channel); + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID; + + return TRUE; +} + +gboolean +blf_read_canmessage(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length, gboolean can_message2) { + blf_logobjectheader_t logheader; + blf_canmessage_t canheader; + blf_canmessage2_trailer_t can2trailer; + + guint32 canid; + guint8 payload_length; + guint8 payload_length_valid; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_canmessage: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_canmessage: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(canheader)) { + ws_debug("blf_read_canmessage: not enough bytes for canfd header in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &canheader, sizeof(canheader), err, err_info)) { + ws_debug("blf_read_canmessage: not enough bytes for can header in file"); + return FALSE; + } + fix_endianness_blf_canmessage(&canheader); + + if (canheader.dlc > 15) { + canheader.dlc = 15; + } + + payload_length = canheader.dlc; + if (payload_length > 8) { + ws_debug("blf_read_canmessage: regular CAN tries more than 8 bytes? Cutting to 8!"); + payload_length = 8; + } + + payload_length_valid = payload_length; + + if (payload_length_valid > object_length - (data_start - block_start)) { + ws_debug("blf_read_canmessage: shortening CAN payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start)); + } + + canid = canheader.id; + + if ((canheader.flags & BLF_CANMESSAGE_FLAG_RTR) == BLF_CANMESSAGE_FLAG_RTR) { + canid |= CAN_RTR_FLAG; + payload_length_valid = 0; + } + + if (!blf_can_fill_buf_and_rec(params, err, err_info, canid, payload_length, payload_length_valid, data_start + sizeof(canheader), logheader.object_timestamp, canheader.channel)) { + return FALSE; + } + + /* actually, we do not really need the data, right now.... */ + if (can_message2) { + if (object_length < (data_start - block_start) + sizeof(canheader) + payload_length_valid + sizeof(can2trailer)) { + ws_debug("blf_read_canmessage2: not enough bytes for can message 2 trailer"); + return FALSE; + } + if (!blf_read_bytes_or_eof(params, data_start + sizeof(canheader) + payload_length_valid, &can2trailer, sizeof(can2trailer), err, err_info)) { + ws_debug("blf_read_canmessage2: not enough bytes for can message 2 trailer in file"); + return FALSE; + } + fix_endianness_blf_canmessage2_trailer(&can2trailer); + } + + return TRUE; +} + +gboolean +blf_read_canfdmessage(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_canfdmessage_t canheader; + + gboolean canfd; + guint32 canid; + guint8 payload_length; + guint8 payload_length_valid; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(canheader)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for canfd header in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &canheader, sizeof(canheader), err, err_info)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for canfd header in file"); + return FALSE; + } + fix_endianness_blf_canfdmessage(&canheader); + + if (canheader.dlc > 15) { + canheader.dlc = 15; + } + + canfd = (canheader.canfdflags & BLF_CANFDMESSAGE_CANFDFLAG_EDL) == BLF_CANFDMESSAGE_CANFDFLAG_EDL; + if (canfd) { + payload_length = canfd_dlc_to_length[canheader.dlc]; + } else { + if (canheader.dlc > 8) { + ws_debug("blf_read_canfdmessage64: regular CAN tries more than 8 bytes?"); + } + payload_length = can_dlc_to_length[canheader.dlc]; + } + + payload_length_valid = payload_length; + + if (payload_length_valid > canheader.validDataBytes) { + ws_debug("blf_read_canfdmessage: shortening canfd payload because valid data bytes shorter!"); + payload_length_valid = canheader.validDataBytes; + } + + if (payload_length_valid > object_length - (data_start - block_start) + sizeof(canheader)) { + ws_debug("blf_read_canfdmessage: shortening can payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start)); + } + + canid = canheader.id; + + if ((canheader.flags & BLF_CANMESSAGE_FLAG_RTR) == BLF_CANMESSAGE_FLAG_RTR) { + canid |= CAN_RTR_FLAG; + payload_length_valid = 0; + } + + if (!blf_can_fill_buf_and_rec(params, err, err_info, canid, payload_length, payload_length_valid, data_start + sizeof(canheader), logheader.object_timestamp, canheader.channel)) { + return FALSE; + } + + return TRUE; +} + +gboolean +blf_read_canfdmessage64(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_canfdmessage64_t canheader; + + gboolean canfd; + guint32 canid; + guint8 payload_length; + guint8 payload_length_valid; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(canheader)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for canfd header in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &canheader, sizeof(canheader), err, err_info)) { + ws_debug("blf_read_canfdmessage64: not enough bytes for canfd header in file"); + return FALSE; + } + fix_endianness_blf_canfdmessage64(&canheader); + + + if (canheader.dlc > 15) { + canheader.dlc = 15; + } + + canfd = (canheader.flags & BLF_CANFDMESSAGE64_FLAG_EDL) == BLF_CANFDMESSAGE64_FLAG_EDL; + if (canfd) { + payload_length = canfd_dlc_to_length[canheader.dlc]; + } else { + if (canheader.dlc > 8) { + ws_debug("blf_read_canfdmessage64: regular CAN tries more than 8 bytes?"); + } + payload_length = can_dlc_to_length[canheader.dlc]; + } + + payload_length_valid = payload_length; + + if (payload_length_valid > canheader.validDataBytes) { + ws_debug("blf_read_canfdmessage64: shortening canfd payload because valid data bytes shorter!"); + payload_length_valid = canheader.validDataBytes; + } + + if (payload_length_valid > object_length - (data_start - block_start)) { + ws_debug("blf_read_canfdmessage64: shortening can payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start)); + } + + canid = canheader.id; + + if ((canid & CAN_EFF_FLAG) == CAN_EFF_FLAG) { + if ((canheader.flags & BLF_CANFDMESSAGE64_FLAG_SRR) == BLF_CANFDMESSAGE64_FLAG_SRR) { + canid |= CAN_RTR_FLAG; + payload_length_valid = 0; + } + } else { + if ((canheader.flags & BLF_CANFDMESSAGE64_FLAG_REMOTE_FRAME) == BLF_CANFDMESSAGE64_FLAG_REMOTE_FRAME) { + canid |= CAN_RTR_FLAG; + payload_length_valid = 0; + } + } + + if (!blf_can_fill_buf_and_rec(params, err, err_info, canid, payload_length, payload_length_valid, data_start + sizeof(canheader), logheader.object_timestamp, canheader.channel)) { + return FALSE; + } + + return TRUE; +} + +gboolean +blf_read_flexraydata(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_flexraydata_t frheader; + + guint8 payload_length; + guint8 payload_length_valid; + guint8 tmpbuf[7]; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_flexraydata: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_flexraydata: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(frheader)) { + ws_debug("blf_read_flexraydata: not enough bytes for flexrayheader in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &frheader, sizeof(frheader), err, err_info)) { + ws_debug("blf_read_flexraydata: not enough bytes for flexrayheader header in file"); + return FALSE; + } + fix_endianness_blf_flexraydata(&frheader); + + payload_length = frheader.len; + payload_length_valid = payload_length; + + if ((frheader.len & 0x01) == 0x01) { + ws_debug("blf_read_flexraydata: reading odd length in FlexRay!?"); + } + + if (payload_length_valid > object_length - (data_start - block_start) - sizeof(frheader)) { + ws_debug("blf_read_flexraydata: shortening FlexRay payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start) - sizeof(frheader)); + } + + if (frheader.channel != 0 && frheader.channel != 1) { + ws_debug("blf_read_flexraydata: FlexRay supports only two channels."); + } + + /* Measurement Header */ + if (frheader.channel == 0) { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME; + } else { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME | BLF_FLEXRAYDATA_CHANNEL_B; + } + + /* Error Flags */ + tmpbuf[1] = 0; + + /* Frame Header */ + tmpbuf[2] = 0x20 | ((0x0700 & frheader.messageId) >> 8); + tmpbuf[3] = 0x00ff & frheader.messageId; + tmpbuf[4] = (0xfe & frheader.len) | ((frheader.crc & 0x0400) >> 10); + tmpbuf[5] = (0x03fc & frheader.crc) >> 2; + tmpbuf[6] = ((0x0003 & frheader.crc) << 6) | (0x3f & frheader.mux); + + ws_buffer_assure_space(params->buf, sizeof(tmpbuf) + payload_length_valid); + ws_buffer_append(params->buf, tmpbuf, sizeof(tmpbuf)); + params->rec->rec_header.packet_header.caplen = sizeof(tmpbuf) + payload_length_valid; + params->rec->rec_header.packet_header.len = sizeof(tmpbuf) + payload_length; + + if (payload_length_valid > 0 && !blf_read_bytes_or_eof(params, data_start + sizeof(frheader), ws_buffer_end_ptr(params->buf), payload_length_valid, err, err_info)) { + ws_debug("blf_read_flexraydata: copying can payload failed"); + return FALSE; + } + params->buf->first_free += payload_length_valid; + + blf_init_rec(params, logheader.object_timestamp, WTAP_ENCAP_FLEXRAY, frheader.channel); + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID; + + return TRUE; +} + +gboolean +blf_read_flexraymessage(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length) { + blf_logobjectheader_t logheader; + blf_flexraymessage_t frheader; + + guint8 payload_length; + guint8 payload_length_valid; + guint8 tmpbuf[7]; + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_flexraymessage: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_flexraymessage: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if (object_length < (data_start - block_start) + sizeof(frheader)) { + ws_debug("blf_read_flexraymessage: not enough bytes for flexrayheader in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &frheader, sizeof(frheader), err, err_info)) { + ws_debug("blf_read_flexraymessage: not enough bytes for flexrayheader header in file"); + return FALSE; + } + fix_endianness_blf_flexraymessage(&frheader); + + payload_length = frheader.length; + payload_length_valid = payload_length; + + if ((frheader.length & 0x01) == 0x01) { + ws_debug("blf_read_flexraymessage: reading odd length in FlexRay!?"); + } + + if (payload_length_valid > object_length - (data_start - block_start) - sizeof(frheader)) { + ws_debug("blf_read_flexraymessage: shortening FlexRay payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start) - sizeof(frheader)); + } + + if (frheader.channel != 0 && frheader.channel != 1) { + ws_debug("blf_read_flexraymessage: FlexRay supports only two channels."); + } + + /* Measurement Header */ + if (frheader.channel == 0) { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME; + } else { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME | BLF_FLEXRAYDATA_CHANNEL_B; + } + + /* Error Flags */ + tmpbuf[1] = 0; + + /* Frame Header */ + tmpbuf[2] = ((0x0700 & frheader.frameId) >> 8); + if ((frheader.frameState & BLF_FLEXRAYMESSAGE_STATE_PPI) == BLF_FLEXRAYMESSAGE_STATE_PPI) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_PPI; + } + + if ((frheader.frameState & BLF_FLEXRAYMESSAGE_STATE_SFI) == BLF_FLEXRAYMESSAGE_STATE_SFI) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_SFI; + } + + if ((frheader.frameState & BLF_FLEXRAYMESSAGE_STATE_NFI) != BLF_FLEXRAYMESSAGE_STATE_NFI) { + /* NFI needs to be inversed !? */ + tmpbuf[2] |= BLF_DLT_FLEXRAY_NFI; + } + + if ((frheader.frameState & BLF_FLEXRAYMESSAGE_STATE_STFI) == BLF_FLEXRAYMESSAGE_STATE_STFI) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_STFI; + } + + tmpbuf[3] = 0x00ff & frheader.frameId; + tmpbuf[4] = (0xfe & frheader.length) | ((frheader.headerCrc & 0x0400) >> 10); + tmpbuf[5] = (0x03fc & frheader.headerCrc) >> 2; + tmpbuf[6] = ((0x0003 & frheader.headerCrc) << 6) | (0x3f & frheader.cycle); + + ws_buffer_assure_space(params->buf, sizeof(tmpbuf) + payload_length_valid); + ws_buffer_append(params->buf, tmpbuf, sizeof(tmpbuf)); + params->rec->rec_header.packet_header.caplen = sizeof(tmpbuf) + payload_length_valid; + params->rec->rec_header.packet_header.len = sizeof(tmpbuf) + payload_length; + + if (payload_length_valid > 0 && !blf_read_bytes_or_eof(params, data_start + sizeof(frheader), ws_buffer_end_ptr(params->buf), payload_length_valid, err, err_info)) { + ws_debug("blf_read_flexraymessage: copying can payload failed"); + return FALSE; + } + params->buf->first_free += payload_length_valid; + + blf_init_rec(params, logheader.object_timestamp, WTAP_ENCAP_FLEXRAY, frheader.channel); + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID; + + return TRUE; +} + +gboolean +blf_read_flexrayrcvmessageex(blf_params_t *params, int *err, gchar **err_info, gint64 block_start, gint64 header2_start, gint64 data_start, guint64 object_length, gboolean ext) { + blf_logobjectheader_t logheader; + blf_flexrayrcvmessage_t frheader; + + guint16 payload_length; + guint16 payload_length_valid; + guint8 tmpbuf[7]; + gint frheadersize = sizeof(frheader); + + if (ext) { + frheadersize += 40; + } + + if (data_start - header2_start < (gint64)sizeof(blf_logobjectheader_t)) { + ws_debug("blf_read_flexraymessage: not enough bytes for timestamp header"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, header2_start, &logheader, sizeof(logheader), err, err_info)) { + ws_debug("blf_read_flexraymessage: not enough bytes for logheader"); + return FALSE; + } + fix_endianness_blf_logobjectheader(&logheader); + + if ((gint64)object_length < (data_start - block_start) + frheadersize) { + ws_debug("blf_read_flexraymessage: not enough bytes for flexrayheader in object"); + return FALSE; + } + + if (!blf_read_bytes_or_eof(params, data_start, &frheader, sizeof(frheader), err, err_info)) { + ws_debug("blf_read_flexraymessage: not enough bytes for flexrayheader header in file"); + return FALSE; + } + fix_endianness_blf_flexrayrcvmessage(&frheader); + + if (!ext) { + frheader.dir &= 0xff; + frheader.cycle &= 0xff; + } + + payload_length = frheader.payloadLength; + payload_length_valid = frheader.payloadLengthValid; + + if ((frheader.payloadLength & 0x01) == 0x01) { + ws_debug("blf_read_flexraymessage: reading odd length in FlexRay!?"); + } + + if (payload_length_valid > object_length - (data_start - block_start) - frheadersize) { + ws_debug("blf_read_flexraymessage: shortening FlexRay payload because buffer is too short!"); + payload_length_valid = (guint8)(object_length - (data_start - block_start) - frheadersize); + } + + /* Measurement Header */ + /* TODO: It seems that this format support both channels at the same time!? */ + if (frheader.channelMask == BLF_FLEXRAYRCVMSG_CHANNELMASK_A) { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME; + } else { + tmpbuf[0] = BLF_FLEXRAYDATA_FRAME | BLF_FLEXRAYDATA_CHANNEL_B; + } + + /* Error Flags */ + tmpbuf[1] = 0; + + /* Frame Header */ + tmpbuf[2] = ((0x0700 & frheader.frameId) >> 8); + if ((frheader.data & BLF_FLEXRAYRCVMSG_DATA_FLAG_PAYLOAD_PREAM) == BLF_FLEXRAYRCVMSG_DATA_FLAG_PAYLOAD_PREAM) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_PPI; + } + + if ((frheader.data & BLF_FLEXRAYRCVMSG_DATA_FLAG_SYNC) == BLF_FLEXRAYRCVMSG_DATA_FLAG_SYNC) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_SFI; + } + + if ((frheader.data & BLF_FLEXRAYRCVMSG_DATA_FLAG_NULL_FRAME) != BLF_FLEXRAYRCVMSG_DATA_FLAG_NULL_FRAME) { + /* NFI needs to be inversed !? */ + tmpbuf[2] |= BLF_DLT_FLEXRAY_NFI; + } + + if ((frheader.data & BLF_FLEXRAYRCVMSG_DATA_FLAG_STARTUP) == BLF_FLEXRAYRCVMSG_DATA_FLAG_STARTUP) { + tmpbuf[2] |= BLF_DLT_FLEXRAY_STFI; + } + + tmpbuf[3] = 0x00ff & frheader.frameId; + tmpbuf[4] = (0xfe & frheader.payloadLength) | ((frheader.headerCrc1 & 0x0400) >> 10); + tmpbuf[5] = (0x03fc & frheader.headerCrc1) >> 2; + tmpbuf[6] = ((0x0003 & frheader.headerCrc1) << 6) | (0x3f & frheader.cycle); + + ws_buffer_assure_space(params->buf, sizeof(tmpbuf) + payload_length_valid); + ws_buffer_append(params->buf, tmpbuf, sizeof(tmpbuf)); + params->rec->rec_header.packet_header.caplen = sizeof(tmpbuf) + payload_length_valid; + params->rec->rec_header.packet_header.len = sizeof(tmpbuf) + payload_length; + + if (payload_length_valid > 0 && !blf_read_bytes_or_eof(params, data_start + frheadersize, ws_buffer_end_ptr(params->buf), payload_length_valid, err, err_info)) { + ws_debug("blf_read_flexraymessage: copying can payload failed"); + return FALSE; + } + params->buf->first_free += payload_length_valid; + + blf_init_rec(params, logheader.object_timestamp, WTAP_ENCAP_FLEXRAY, frheader.channelMask); + params->rec->presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN | WTAP_HAS_INTERFACE_ID; + + return TRUE; +} + + +gboolean +blf_read_block(blf_params_t *params, gint64 start_pos, int *err, gchar **err_info) { + blf_blockheader_t header; + //gint64 infile_block_start = blf_translate_pos(params->blf_data, start_pos); + + while (1) { + /* Find Object */ + + /* Resetting buffer */ + params->buf->first_free = params->buf->start; + + while (1) { + if (!blf_read_bytes_or_eof(params, start_pos, &header, sizeof header, err, err_info)) { + ws_debug("blf_read_block: not enough bytes for block header or unsupported file"); + if (*err == WTAP_ERR_SHORT_READ) { + /* we have found the end that is not a short read therefore. */ + *err = 0; + g_free(*err_info); + } + return FALSE; + } + + fix_endianness_blf_blockheader(&header); + + if (memcmp(header.magic, blf_obj_magic, sizeof(blf_obj_magic))) { + ws_debug("object magic is not LOBJ"); + } else { + break; + } + + /* we are moving back and try again but 1 byte later */ + /* TODO: better understand how this paddings works... */ + start_pos++; + } + params->blf_data->start_of_last_obj = start_pos; + + if (header.header_type != BLF_HEADER_TYPE_DEFAULT) { + ws_debug("unknown header type"); + return FALSE; + } + + /* already making sure that we start after this object next time. */ + params->blf_data->current_real_seek_pos = start_pos + header.object_length; + + switch (header.object_type) { + case BLF_OBJTYPE_LOG_CONTAINER: + ws_debug("blf_read_block: log container in log container not supported"); + return FALSE; + break; + + case BLF_OBJTYPE_ETHERNET_FRAME: + return blf_read_ethernetframe(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_ETHERNET_FRAME_EX: + return blf_read_ethernetframe_ext(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_CAN_MESSAGE: + return blf_read_canmessage(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length, FALSE); + break; + + case BLF_OBJTYPE_CAN_MESSAGE2: + return blf_read_canmessage(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length, TRUE); + break; + + case BLF_OBJTYPE_CAN_FD_MESSAGE: + return blf_read_canfdmessage(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_CAN_FD_MESSAGE_64: + return blf_read_canfdmessage64(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_FLEXRAY_DATA: + return blf_read_flexraydata(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_FLEXRAY_MESSAGE: + return blf_read_flexraymessage(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length); + break; + + case BLF_OBJTYPE_FLEXRAY_RCVMESSAGE: + return blf_read_flexrayrcvmessageex(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length, FALSE); + break; + + case BLF_OBJTYPE_FLEXRAY_RCVMESSAGE_EX: + return blf_read_flexrayrcvmessageex(params, err, err_info, start_pos, start_pos + sizeof(blf_blockheader_t), + start_pos + header.header_length, header.object_length, TRUE); + break; + + default: + ws_debug("blf_read_block: unknown object type"); + start_pos += header.object_length; + } + } + return TRUE; +} + +static gboolean blf_read(wtap *wth, wtap_rec *rec, Buffer *buf, int *err, gchar **err_info, gint64 *data_offset) { + blf_params_t blf_tmp; + + blf_tmp.wth = wth; + blf_tmp.fh = wth->fh; + blf_tmp.rec = rec; + blf_tmp.buf = buf; + blf_tmp.blf_data = (blf_t *)wth->priv; + + if (!blf_read_block(&blf_tmp, blf_tmp.blf_data->current_real_seek_pos, err, err_info)) { + ws_debug("data_offset is %" G_GINT64_MODIFIER "d", *data_offset); + return FALSE; + } + *data_offset = blf_tmp.blf_data->start_of_last_obj; + + return TRUE; +} + +static gboolean blf_seek_read(wtap *wth, gint64 seek_off, wtap_rec *rec, Buffer *buf, int *err, gchar **err_info) { + blf_params_t blf_tmp; + + blf_tmp.wth = wth; + blf_tmp.fh = wth->random_fh; + blf_tmp.rec = rec; + blf_tmp.buf = buf; + blf_tmp.blf_data = (blf_t *)wth->priv; + + if (!blf_read_block(&blf_tmp, seek_off, err, err_info)) { + ws_debug("couldn't read packet block (err=%d).", *err); + return FALSE; + } + + return TRUE; +} + +static void blf_close(wtap *wth) { + blf_t *blf = (blf_t *)wth->priv; + + if (blf != NULL && blf->log_containers != NULL) { + for (guint i = 0; i < blf->log_containers->len; i++) { + blf_log_container_t *log_container = &g_array_index(blf->log_containers, blf_log_container_t, i); + if (log_container->real_data != NULL) { + g_free(log_container->real_data); + } + } + g_array_free(blf->log_containers, TRUE); + blf->log_containers = NULL; + } + + return; +} + +wtap_open_return_val +blf_open(wtap *wth, int *err, gchar **err_info) { + blf_fileheader_t header; + blf_t *blf; + blf_params_t params; + + ws_debug("opening file"); + + if (!wtap_read_bytes_or_eof(wth->fh, &header, sizeof header, err, err_info)) { + + ws_debug("wtap_read_bytes_or_eof() failed, err = %d.", *err); + if (*err == 0 || *err == WTAP_ERR_SHORT_READ) { + /* + * Short read or EOF. + * + * We're reading this as part of an open, so + * the file is too short to be a blf file. + */ + *err = 0; + g_free(*err_info); + *err_info = NULL; + return WTAP_OPEN_NOT_MINE; + } + return WTAP_OPEN_ERROR; + } + + fix_endianness_blf_fileheader(&header); + + if (memcmp(header.magic, blf_magic, sizeof(blf_magic))) { + return WTAP_OPEN_NOT_MINE; + } + + /* This seems to be an BLF! */ + /* skip unknown part of header */ + file_seek(wth->fh, header.header_length, SEEK_SET, err); + + /* Prepare our private context. */ + blf = g_new(blf_t, 1); + blf->log_containers = NULL; + blf->current_log_container = 0; + blf->current_real_seek_pos = 0; + + /* embed in params */ + params.blf_data = blf; + params.buf = NULL; + params.fh = wth->fh; + params.rec = NULL; + params.wth = wth; + params.blf_data->current_real_seek_pos = 0; + + /* lets check out the layout of all log containers */ + blf_scan_file_for_logcontainers(¶ms); + + wth->priv = (void *)blf; + wth->file_encap = WTAP_ENCAP_UNKNOWN; + wth->snapshot_length = 0; + wth->file_tsprec = WTAP_TSPREC_UNKNOWN; + wth->subtype_read = blf_read; + wth->subtype_seek_read = blf_seek_read; + wth->subtype_close = blf_close; + wth->file_type_subtype = blf_file_type_subtype; + + return WTAP_OPEN_MINE; +} + +static const struct supported_block_type blf_blocks_supported[] = { + { WTAP_BLOCK_PACKET, ONE_BLOCK_SUPPORTED, NO_OPTIONS_SUPPORTED } +}; + +static const struct file_type_subtype_info blf_info = { + "BLF Logfile", "blf", "blf", NULL, + FALSE, BLOCKS_SUPPORTED(blf_blocks_supported), + NULL, NULL, NULL +}; + +void register_blf(void) +{ + blf_file_type_subtype = wtap_register_file_type_subtype(&blf_info); + + /* + * Register name for backwards compatibility with the + * wtap_filetypes table in Lua. + */ + wtap_register_backwards_compatibility_lua_name("BLF", blf_file_type_subtype); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ diff --git a/wiretap/blf.h b/wiretap/blf.h new file mode 100644 index 0000000000..3871b31326 --- /dev/null +++ b/wiretap/blf.h @@ -0,0 +1,473 @@ +/* blf.h + * + * BLF file format decoder for the Wiretap library. + * + * Copyright (c) 2021 by Dr. Lars Voelker + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + + /* + * The following was used as a reference for the file format: + * https://bitbucket.org/tobylorenz/vector_blf + * The repo above includes multiple examples files as well. + */ + +#ifndef __W_BLF_H__ +#define __W_BLF_H__ + +#include "wtap.h" +#include + +wtap_open_return_val blf_open(wtap *wth, int *err, gchar **err_info); + + +#define BLF_HEADER_TYPE_DEFAULT 1 + +#define BLF_COMPRESSION_NONE 0 +#define BLF_COMPRESSION_ZLIB 2 + +#define BLF_TIMESTAMP_RESOLUTION_10US 1 +#define BLF_TIMESTAMP_RESOLUTION_1NS 2 + +typedef struct blf_date { + guint16 year; + guint16 month; + guint16 dayofweek; + guint16 day; + guint16 hour; + guint16 mins; + guint16 sec; + guint16 ms; +} blf_date_t; + +/* BLF Header */ +typedef struct blf_fileheader { + guint8 magic[4]; + guint32 header_length; + + guint8 applications[4]; + guint8 api[4]; + + guint64 len_compressed; + guint64 len_uncompressed; + + guint32 obj_count; + guint32 obj_read; + + blf_date_t start_date; + blf_date_t end_date; + + guint32 length3; +} blf_fileheader_t; + +typedef struct blf_blockheader { + guint8 magic[4]; + guint16 header_length; /* length of header starting with magic */ + guint16 header_type; /* header format ? */ + guint32 object_length; /* complete length including header */ + guint32 object_type; +} blf_blockheader_t; + +typedef struct blf_logcontainerheader { + guint16 compression_method; /* 0 uncompressed, 2 zlib */ + guint16 res1; + guint32 res2; + guint32 uncompressed_size; + guint32 res4; +} blf_logcontainerheader_t; + +typedef struct blf_logobjectheader { + guint32 flags; + guint16 client_index; + guint16 object_version; + guint64 object_timestamp; +} blf_logobjectheader_t; + +typedef struct blf_ethernetframeheader { + guint8 src_addr[6]; + guint16 channel; + guint8 dst_addr[6]; + guint16 direction; + guint16 ethtype; + guint16 tpid; + guint16 tci; + guint16 payloadlength; + guint64 res; +} blf_ethernetframeheader_t; + +typedef struct blf_ethernetframeheader_ex { + guint16 struct_length; + guint16 flags; + guint16 channel; + guint16 hw_channel; + guint64 frame_duration; + guint32 frame_checksum; + guint16 direction; + guint16 frame_length; + guint32 frame_handle; + guint32 error; +} blf_ethernetframeheader_ex_t; + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/CanMessage.h */ + +/* shared for CAN message and CAN message2 and CANFD message */ +#define BLF_CANMESSAGE_FLAG_TX 0x01 +#define BLF_CANMESSAGE_FLAG_NERR 0x20 +#define BLF_CANMESSAGE_FLAG_WU 0x40 +#define BLF_CANMESSAGE_FLAG_RTR 0x80 + +/* shared for CAN message and CAN message2*/ +typedef struct blf_canmessage { + guint16 channel; + guint8 flags; + guint8 dlc; + guint32 id; +} blf_canmessage_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/CanMessage2.h */ + +typedef struct blf_canmessage2_trailer { + guint32 frameLength_in_ns; + guint8 bitCount; + guint8 reserved1; + guint16 reserved2; +} blf_canmessage2_trailer_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/CanFdMessage.h */ + +/* EDL 0: CAN, 1: CAN-FD*/ +#define BLF_CANFDMESSAGE_CANFDFLAG_EDL 0x01 +#define BLF_CANFDMESSAGE_CANFDFLAG_BRS 0x02 +#define BLF_CANFDMESSAGE_CANFDFLAG_ESI 0x04 + +typedef struct blf_canfdmessage { + guint16 channel; + guint8 flags; + guint8 dlc; + guint32 id; + guint32 frameLength_in_ns; + guint8 canfdflags; + guint8 validDataBytes; + guint8 reservedCanFdMessage1; + guint32 reservedCanFdMessage2; + /* DATA */ + /* guint32 reservedCanFdMessage3 */ +} blf_canfdmessage_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/CanFdMessage64.h */ + +#define BLF_CANFDMESSAGE64_FLAG_NERR 0x000004 +#define BLF_CANFDMESSAGE64_FLAG_HIGH_VOLT_WAKE_UP 0x000008 +#define BLF_CANFDMESSAGE64_FLAG_REMOTE_FRAME 0x000010 +#define BLF_CANFDMESSAGE64_FLAG_TX_ACK 0x000040 +#define BLF_CANFDMESSAGE64_FLAG_TX_REQ 0x000080 +#define BLF_CANFDMESSAGE64_FLAG_SRR 0x000200 +#define BLF_CANFDMESSAGE64_FLAG_R0 0x000400 +#define BLF_CANFDMESSAGE64_FLAG_R1 0x000800 +/* EDL 0: CAN, 1: CAN-FD*/ +#define BLF_CANFDMESSAGE64_FLAG_EDL 0x001000 +#define BLF_CANFDMESSAGE64_FLAG_BRS 0x002000 +#define BLF_CANFDMESSAGE64_FLAG_ESI 0x004000 +#define BLF_CANFDMESSAGE64_FLAG_BURST 0x200000 + +typedef struct blf_canfdmessage64 { + guint8 channel; + guint8 dlc; + guint8 validDataBytes; + guint8 txCount; + guint32 id; + guint32 frameLength_in_ns; + guint32 flags; + guint32 btrCfgArb; + guint32 btrCfgData; + guint32 timeOffsetBrsNs; + guint32 timeOffsetCrcDelNs; + guint16 bitCount; + guint8 dir; + guint8 extDataOffset; + guint32 crc; +} blf_canfdmessage64_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/FlexRayData.h */ + +#define BLF_FLEXRAYDATA_FRAME 0x01 +#define BLF_FLEXRAYDATA_CHANNEL_B 0x80 + +typedef struct blf_flexraydata { + guint16 channel; + guint8 mux; + guint8 len; + guint16 messageId; + guint16 crc; + guint8 dir; + guint8 reservedFlexRayData1; + guint16 reservedFlexRayData2; +} blf_flexraydata_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/FlexRayV6Message.h */ + +#define BLF_FLEXRAYMESSAGE_DIR_RX 0x01 +#define BLF_FLEXRAYMESSAGE_DIR_TX 0x02 +#define BLF_FLEXRAYMESSAGE_DIR_TX_REQ 0x04 + +#define BLF_FLEXRAYMESSAGE_STATE_PPI 0x01 +#define BLF_FLEXRAYMESSAGE_STATE_SFI 0x02 +#define BLF_FLEXRAYMESSAGE_STATE_RES_BIT2 0x04 +#define BLF_FLEXRAYMESSAGE_STATE_NFI 0x08 +#define BLF_FLEXRAYMESSAGE_STATE_STFI 0x10 +#define BLF_FLEXRAYMESSAGE_STATE_FORMAT 0xe0 + +#define BLF_FLEXRAYMESSAGE_HEADER_BIT_NM 0x01 +#define BLF_FLEXRAYMESSAGE_HEADER_BIT_SYNC 0x02 +#define BLF_FLEXRAYMESSAGE_HEADER_BIT_RES 0x04 + +#define BLF_DLT_FLEXRAY_STFI 0x08 +#define BLF_DLT_FLEXRAY_SFI 0x10 +#define BLF_DLT_FLEXRAY_NFI 0x20 +#define BLF_DLT_FLEXRAY_PPI 0x40 + +typedef struct blf_flexraymessage { + guint16 channel; + guint8 dir; /* Flags: 0 RX, 1 TX, 2 TX Req, 3 internal, 4 internal*/ + guint8 lowTime; + guint32 fpgaTick; + guint32 fpgaTickOverflow; + guint32 clientIndexFlexRayV6Message; + guint32 clusterTime; + guint16 frameId; + guint16 headerCrc; + guint16 frameState; + guint8 length; + guint8 cycle; + guint8 headerBitMask; + guint8 reservedFlexRayV6Message1; + guint16 reservedFlexRayV6Message2; +} blf_flexraymessage_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/FlexRayVFrReceiveMsg.h */ + +#define BLF_FLEXRAYRCVMSG_DIR_RX 0x01 +#define BLF_FLEXRAYRCVMSG_DIR_TX 0x02 +#define BLF_FLEXRAYRCVMSG_DIR_TX_REQ 0x04 + +#define BLF_FLEXRAYRCVMSG_CHANNELMASK_RES 0x00 +#define BLF_FLEXRAYRCVMSG_CHANNELMASK_A 0x01 +#define BLF_FLEXRAYRCVMSG_CHANNELMASK_B 0x02 +#define BLF_FLEXRAYRCVMSG_CHANNELMASK_AB 0x03 + +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_NULL_FRAME 0x00000001 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_VALID_DATA 0x00000002 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_SYNC 0x00000004 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_STARTUP 0x00000008 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_PAYLOAD_PREAM 0x00000010 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_RES_20 0x00000020 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_ERROR 0x00000040 +#define BLF_FLEXRAYRCVMSG_DATA_FLAG_RES_80 0x00000080 + +typedef struct blf_flexrayrcvmessage { + guint16 channel; + guint16 version; + guint16 channelMask; /* 0 res, 1 A, 2 B, 3 A+B */ + guint16 dir; /* 0 RX, 1 TX, 2 TX Req, 3 internal, 4 internal*/ /* high byte reserved! */ + guint32 clientIndex; + guint32 clusterNo; + guint16 frameId; + guint16 headerCrc1; + guint16 headerCrc2; + guint16 payloadLength; + guint16 payloadLengthValid; + guint16 cycle; /* high byte reserved! */ + guint32 tag; + guint32 data; + guint32 frameFlags; + guint32 appParameter; + /* if ext, skip 40 bytes */ + /* payload bytes */ + /* guint16 res3 */ + /* guint32 res4 */ +} blf_flexrayrcvmessage_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/FlexRayVFrReceiveMsgEx.h */ + +/* defines see above BLF_FLEXRAYRCVMSG_* */ + +typedef struct blf_flexrayrcvmessageex { + guint16 channel; + guint16 version; + guint16 channelMask; /* 0 res, 1 A, 2 B, 3 A+B */ + guint16 dir; /* 0 RX, 1 TX, 2 TX Req, 3 internal, 4 internal*/ + guint32 clientIndex; + guint32 clusterNo; + guint16 frameId; + guint16 headerCrc1; + guint16 headerCrc2; + guint16 payloadLength; + guint16 payloadLengthValid; + guint16 cycle; + guint32 tag; + guint32 data; + guint32 frameFlags; + guint32 appParameter; + guint32 frameCRC; + guint32 frameLengthInNs; + guint16 frameId1; + guint16 pduOffset; + guint16 blfLogMask; + guint16 res1; + guint32 res2; + guint32 res3; + guint32 res4; + guint32 res5; + guint32 res6; + guint32 res7; + /* payload bytes */ +} blf_flexrayrcvmessageex_t; + + +/* see https://bitbucket.org/tobylorenz/vector_blf/src/master/src/Vector/BLF/ObjectHeaderBase.h */ + +#define BLF_OBJTYPE_UNKNOWN 0 +#define BLF_OBJTYPE_CAN_MESSAGE 1 +#define BLF_OBJTYPE_CAN_ERROR 2 +#define BLF_OBJTYPE_CAN_OVERLOAD 3 +#define BLF_OBJTYPE_CAN_STATISTIC 4 +#define BLF_OBJTYPE_APP_TRIGGER 5 +#define BLF_OBJTYPE_ENV_INTEGER 6 +#define BLF_OBJTYPE_ENV_DOUBLE 7 +#define BLF_OBJTYPE_ENV_STRING 8 +#define BLF_OBJTYPE_ENV_DATA 9 +#define BLF_OBJTYPE_LOG_CONTAINER 10 +#define BLF_OBJTYPE_LIN_MESSAGE 11 +#define BLF_OBJTYPE_LIN_CRC_ERROR 12 +#define BLF_OBJTYPE_LIN_DLC_INFO 13 +#define BLF_OBJTYPE_LIN_RCV_ERROR 14 +#define BLF_OBJTYPE_LIN_SND_ERROR 15 +#define BLF_OBJTYPE_LIN_SLV_TIMEOUT 16 +#define BLF_OBJTYPE_LIN_SCHED_MODCH 17 +#define BLF_OBJTYPE_LIN_SYN_ERROR 18 +#define BLF_OBJTYPE_LIN_BAUDRATE 19 +#define BLF_OBJTYPE_LIN_SLEEP 20 +#define BLF_OBJTYPE_LIN_WAKEUP 21 +#define BLF_OBJTYPE_MOST_SPY 22 +#define BLF_OBJTYPE_MOST_CTRL 23 +#define BLF_OBJTYPE_MOST_LIGHTLOCK 24 +#define BLF_OBJTYPE_MOST_STATISTIC 25 +#define BLF_OBJTYPE_FLEXRAY_DATA 29 +#define BLF_OBJTYPE_FLEXRAY_SYNC 30 +#define BLF_OBJTYPE_CAN_DRIVER_ERROR 31 +#define BLF_OBJTYPE_MOST_PKT 32 +#define BLF_OBJTYPE_MOST_PKT2 33 +#define BLF_OBJTYPE_MOST_HWMODE 34 +#define BLF_OBJTYPE_MOST_REG 35 +#define BLF_OBJTYPE_MOST_GENREG 36 +#define BLF_OBJTYPE_MOST_NETSTATE 37 +#define BLF_OBJTYPE_MOST_DATALOST 38 +#define BLF_OBJTYPE_MOST_TRIGGER 39 +#define BLF_OBJTYPE_FLEXRAY_CYCLE 40 +#define BLF_OBJTYPE_FLEXRAY_MESSAGE 41 +#define BLF_OBJTYPE_LIN_CHECKSUM_INFO 42 +#define BLF_OBJTYPE_LIN_SPIKE_EVENT 43 +#define BLF_OBJTYPE_CAN_DRIVER_SYNC 44 +#define BLF_OBJTYPE_FLEXRAY_STATUS 45 +#define BLF_OBJTYPE_GPS_EVENT 46 +#define BLF_OBJTYPE_FLEXRAY_ERROR 47 +#define BLF_OBJTYPE_FLEXRAY_STATUS2 48 +#define BLF_OBJTYPE_FLEXRAY_STARTCYCLE 49 +#define BLF_OBJTYPE_FLEXRAY_RCVMESSAGE 50 +#define BLF_OBJTYPE_REALTIMECLOCK 51 +#define BLF_OBJTYPE_LIN_STATISTIC 54 +#define BLF_OBJTYPE_J1708_MESSAGE 55 +#define BLF_OBJTYPE_J1708_VIRTUAL_MSG 56 +#define BLF_OBJTYPE_LIN_MESSAGE2 57 +#define BLF_OBJTYPE_LIN_SND_ERROR2 58 +#define BLF_OBJTYPE_LIN_SYN_ERROR2 59 +#define BLF_OBJTYPE_LIN_CRC_ERROR2 60 +#define BLF_OBJTYPE_LIN_RCV_ERROR2 61 +#define BLF_OBJTYPE_LIN_WAKEUP2 62 +#define BLF_OBJTYPE_LIN_SPIKE_EVENT2 63 +#define BLF_OBJTYPE_LIN_LONG_DOM_SIG 64 +#define BLF_OBJTYPE_APP_TEXT 65 +#define BLF_OBJTYPE_FLEXRAY_RCVMESSAGE_EX 66 +#define BLF_OBJTYPE_MOST_STATISTICEX 67 +#define BLF_OBJTYPE_MOST_TXLIGHT 68 +#define BLF_OBJTYPE_MOST_ALLOCTAB 69 +#define BLF_OBJTYPE_MOST_STRESS 70 +#define BLF_OBJTYPE_ETHERNET_FRAME 71 +#define BLF_OBJTYPE_SYS_VARIABLE 72 +#define BLF_OBJTYPE_CAN_ERROR_EXT 73 +#define BLF_OBJTYPE_CAN_DRIVER_ERROR_EXT 74 +#define BLF_OBJTYPE_LIN_LONG_DOM_SIG2 75 +#define BLF_OBJTYPE_MOST_150_MESSAGE 76 +#define BLF_OBJTYPE_MOST_150_PKT 77 +#define BLF_OBJTYPE_MOST_ETHERNET_PKT 78 +#define BLF_OBJTYPE_MOST_150_MESSAGE_FRAGMENT 79 +#define BLF_OBJTYPE_MOST_150_PKT_FRAGMENT 80 +#define BLF_OBJTYPE_MOST_ETHERNET_PKT_FRAGMENT 81 +#define BLF_OBJTYPE_MOST_SYSTEM_EVENT 82 +#define BLF_OBJTYPE_MOST_150_ALLOCTAB 83 +#define BLF_OBJTYPE_MOST_50_MESSAGE 84 +#define BLF_OBJTYPE_MOST_50_PKT 85 +#define BLF_OBJTYPE_CAN_MESSAGE2 86 +#define BLF_OBJTYPE_LIN_UNEXPECTED_WAKEUP 87 +#define BLF_OBJTYPE_LIN_SHORT_OR_SLOW_RESPONSE 88 +#define BLF_OBJTYPE_LIN_DISTURBANCE_EVENT 89 +#define BLF_OBJTYPE_SERIAL_EVENT 90 +#define BLF_OBJTYPE_OVERRUN_ERROR 91 +#define BLF_OBJTYPE_EVENT_COMMENT 92 +#define BLF_OBJTYPE_WLAN_FRAME 93 +#define BLF_OBJTYPE_WLAN_STATISTIC 94 +#define BLF_OBJTYPE_MOST_ECL 95 +#define BLF_OBJTYPE_GLOBAL_MARKER 96 +#define BLF_OBJTYPE_AFDX_FRAME 97 +#define BLF_OBJTYPE_AFDX_STATISTIC 98 +#define BLF_OBJTYPE_KLINE_STATUSEVENT 99 +#define BLF_OBJTYPE_CAN_FD_MESSAGE 100 +#define BLF_OBJTYPE_CAN_FD_MESSAGE_64 101 +#define BLF_OBJTYPE_ETHERNET_RX_ERROR 102 +#define BLF_OBJTYPE_ETHERNET_STATUS 103 +#define BLF_OBJTYPE_CAN_FD_ERROR_64 104 +#define BLF_OBJTYPE_AFDX_STATUS 106 +#define BLF_OBJTYPE_AFDX_BUS_STATISTIC 107 +#define BLF_OBJTYPE_AFDX_ERROR_EVENT 109 +#define BLF_OBJTYPE_A429_ERROR 110 +#define BLF_OBJTYPE_A429_STATUS 111 +#define BLF_OBJTYPE_A429_BUS_STATISTIC 112 +#define BLF_OBJTYPE_A429_MESSAGE 113 +#define BLF_OBJTYPE_ETHERNET_STATISTIC 114 +#define BLF_OBJTYPE_TEST_STRUCTURE 118 +#define BLF_OBJTYPE_DIAG_REQUEST_INTERPRETATION 119 +#define BLF_OBJTYPE_ETHERNET_FRAME_EX 120 +#define BLF_OBJTYPE_ETHERNET_FRAME_FORWARDED 121 +#define BLF_OBJTYPE_ETHERNET_ERROR_EX 122 +#define BLF_OBJTYPE_ETHERNET_ERROR_FORWARDED 123 +#define BLF_OBJTYPE_FUNCTION_BUS 124 +#define BLF_OBJTYPE_DATA_LOST_BEGIN 125 +#define BLF_OBJTYPE_DATA_LOST_END 126 +#define BLF_OBJTYPE_WATER_MARK_EVENT 127 +#define BLF_OBJTYPE_TRIGGER_CONDITION 128 +#define BLF_OBJTYPE_CAN_SETTING_CHANGED 129 +#define BLF_OBJTYPE_DISTRIBUTED_OBJECT_MEMBER 130 +#define BLF_OBJTYPE_ATTRIBUTE_EVENT 131 + +#endif + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ diff --git a/wiretap/file_access.c b/wiretap/file_access.c index 3ceecfeb52..eacdbd73d9 100644 --- a/wiretap/file_access.c +++ b/wiretap/file_access.c @@ -88,6 +88,7 @@ #include "log3gpp.h" #include "candump.h" #include "busmaster.h" +#include "blf.h" /* @@ -158,6 +159,7 @@ static const struct file_extension_info file_type_extensions_base[] = { { "MPEG2 transport stream", TRUE, "mp2t;ts;mpg" }, { "Ixia IxVeriWave .vwr Raw 802.11 Capture", TRUE, "vwr" }, { "CAM Inspector file", TRUE, "camins" }, + { "BLF file", TRUE, "blf" }, { "MPEG files", FALSE, "mpg;mp3" }, { "Transport-Neutral Encapsulation Format", FALSE, "tnef" }, { "JPEG/JFIF files", FALSE, "jpg;jpeg;jfif" }, @@ -370,7 +372,7 @@ static const struct open_info open_info_base[] = { { "HP-UX nettl trace", OPEN_INFO_MAGIC, nettl_open, NULL, NULL, NULL }, { "Visual Networks traffic capture", OPEN_INFO_MAGIC, visual_open, NULL, NULL, NULL }, { "InfoVista 5View capture", OPEN_INFO_MAGIC, _5views_open, NULL, NULL, NULL }, - { "Viavi Observer", OPEN_INFO_MAGIC, observer_open, NULL, NULL, NULL }, + { "Viavi Observer", OPEN_INFO_MAGIC, observer_open, NULL, NULL, NULL }, { "Savvius tagged", OPEN_INFO_MAGIC, peektagged_open, NULL, NULL, NULL }, { "Colasoft Capsa", OPEN_INFO_MAGIC, capsa_open, NULL, NULL, NULL }, { "DBS Etherwatch (VMS)", OPEN_INFO_MAGIC, dbs_etherwatch_open, NULL, NULL, NULL }, @@ -384,10 +386,11 @@ static const struct open_info open_info_base[] = { { "3GPP TS 32.423 Trace format", OPEN_INFO_MAGIC, nettrace_3gpp_32_423_file_open, NULL, NULL, NULL }, /* Gammu DCT3 trace must come before MIME files as it's XML based*/ { "Gammu DCT3 trace", OPEN_INFO_MAGIC, dct3trace_open, NULL, NULL, NULL }, + { "BLF Logfile", OPEN_INFO_MAGIC, blf_open, "blf", NULL, NULL }, { "MIME Files Format", OPEN_INFO_MAGIC, mime_file_open, NULL, NULL, NULL }, { "Micropross mplog", OPEN_INFO_MAGIC, mplog_open, "mplog", NULL, NULL }, { "Unigraf DPA-400 capture", OPEN_INFO_MAGIC, dpa400_open, "bin", NULL, NULL }, - { "RFC 7468 files", OPEN_INFO_MAGIC, rfc7468_open, "pem;crt", NULL, NULL }, + { "RFC 7468 files", OPEN_INFO_MAGIC, rfc7468_open, "pem;crt", NULL, NULL }, { "Novell LANalyzer", OPEN_INFO_HEURISTIC, lanalyzer_open, "tr1", NULL, NULL }, /* * PacketLogger must come before MPEG, because its files diff --git a/wiretap/mime_file.c b/wiretap/mime_file.c index 14e0e1c8c3..81c3af044e 100644 --- a/wiretap/mime_file.c +++ b/wiretap/mime_file.c @@ -70,6 +70,7 @@ static const guint8 pcap_swapped_magic[] = { 0xD4, 0xC3, 0xB2, 0xA1 }; static const guint8 pcap_nsec_magic[] = { 0xA1, 0xB2, 0x3C, 0x4D }; static const guint8 pcap_nsec_swapped_magic[] = { 0x4D, 0x3C, 0xB2, 0xA1 }; static const guint8 pcapng_premagic[] = { 0x0A, 0x0D, 0x0D, 0x0A }; +static const guint8 blf_magic[] = { 'L', 'O', 'G', 'G' }; /* File does not start with it */ static const guint8 pcapng_xmagic[] = { 0x1A, 0x2B, 0x3C, 0x4D }; @@ -89,7 +90,8 @@ static const mime_files_t magic_files[] = { { pcap_swapped_magic, sizeof(pcap_swapped_magic) }, { pcap_nsec_magic, sizeof(pcap_nsec_magic) }, { pcap_nsec_swapped_magic, sizeof(pcap_nsec_swapped_magic) }, - { pcapng_premagic, sizeof(pcapng_premagic) } + { pcapng_premagic, sizeof(pcapng_premagic) }, + { blf_magic, sizeof(blf_magic) } }; #define N_MAGIC_TYPES (sizeof(magic_files) / sizeof(magic_files[0]))