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wireshark/extcap/etl.c

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/* etl.c
*
* Copyright 2020, Odysseus Yang
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* Reads an ETL file and writes out a pcap file with LINKTYPE_ETW.
*
* https://docs.microsoft.com/en-us/windows/win32/etw/event-tracing-portal
*/
#include "config.h"
#include "etl.h"
#include "wsutil/ws_getopt.h"
#include "wsutil/strtoi.h"
#include "etw_message.h"
#include <rpc.h>
#include <winevt.h>
#define MAX_PACKET_SIZE 0xFFFF
#define G_NSEC_PER_SEC 1000000000
#define ADD_OFFSET_TO_POINTER(buffer, offset) (((PBYTE)buffer) + offset)
#define ROUND_UP_COUNT(Count,Pow2) \
( ((Count)+(Pow2)-1) & (~(((int)(Pow2))-1)) )
extern int g_include_undecidable_event;
const GUID mbb_provider = { 0xA42FE227, 0xA7BF, 0x4483, {0xA5, 0x02, 0x6B, 0xCD, 0xA4, 0x28, 0xCD, 0x96} };
EXTERN_C const GUID DECLSPEC_SELECTANY EventTraceGuid = { 0x68fdd900, 0x4a3e, 0x11d1, {0x84, 0xf4, 0x00, 0x00, 0xf8, 0x04, 0x64, 0xe3} };
EXTERN_C const GUID DECLSPEC_SELECTANY ImageIdGuid = { 0xb3e675d7, 0x2554, 0x4f18, { 0x83, 0xb, 0x27, 0x62, 0x73, 0x25, 0x60, 0xde } };
EXTERN_C const GUID DECLSPEC_SELECTANY SystemConfigExGuid = { 0x9b79ee91, 0xb5fd, 0x41c0, { 0xa2, 0x43, 0x42, 0x48, 0xe2, 0x66, 0xe9, 0xd0 } };
EXTERN_C const GUID DECLSPEC_SELECTANY EventMetadataGuid = { 0xbbccf6c1, 0x6cd1, 0x48c4, {0x80, 0xff, 0x83, 0x94, 0x82, 0xe3, 0x76, 0x71 } };
EXTERN_C const GUID DECLSPEC_SELECTANY ZeroGuid = { 0 };
typedef struct _WTAP_ETL_RECORD {
EVENT_HEADER EventHeader; // Event header
ETW_BUFFER_CONTEXT BufferContext; // Buffer context
ULONG UserDataLength;
ULONG MessageLength;
ULONG ProviderLength;
} WTAP_ETL_RECORD;
enum {
OPT_PROVIDER,
OPT_KEYWORD,
OPT_LEVEL,
};
static struct ws_option longopts[] = {
{ "p", ws_required_argument, NULL, OPT_PROVIDER},
{ "k", ws_required_argument, NULL, OPT_KEYWORD},
{ "l", ws_required_argument, NULL, OPT_LEVEL},
{ 0, 0, 0, 0 }
};
typedef struct _PROVIDER_FILTER {
GUID ProviderId;
ULONG64 Keyword;
UCHAR Level;
} PROVIDER_FILTER;
static gchar g_err_info[FILENAME_MAX] = { 0 };
static int g_err = ERROR_SUCCESS;
static wtap_dumper* g_pdh = NULL;
extern ULONGLONG g_num_events;
static PROVIDER_FILTER g_provider_filters[32] = { 0 };
static BOOL g_is_live_session = FALSE;
static void WINAPI event_callback(PEVENT_RECORD ev);
void etw_dump_write_opn_event(PEVENT_RECORD ev, ULARGE_INTEGER timestamp);
void etw_dump_write_general_event(PEVENT_RECORD ev, ULARGE_INTEGER timestamp);
void etw_dump_write_event_head_only(PEVENT_RECORD ev, ULARGE_INTEGER timestamp);
void wtap_etl_rec_dump(ULARGE_INTEGER timestamp, WTAP_ETL_RECORD* etl_record, ULONG total_packet_length, BOOLEAN is_inbound);
wtap_dumper* etw_dump_open(const char* pcapng_filename, int* err, gchar** err_info);
DWORD GetPropertyValue(WCHAR* ProviderId, EVT_PUBLISHER_METADATA_PROPERTY_ID PropertyId, PEVT_VARIANT* Value)
{
BOOL bRet;
DWORD err = ERROR_SUCCESS;
PEVT_VARIANT value = NULL;
DWORD bufSize = 0;
DWORD bufUsedOrReqd = 0;
EVT_HANDLE pubHandle = EvtOpenPublisherMetadata(NULL, ProviderId, NULL, GetThreadLocale(), 0);
if (pubHandle == NULL)
{
return GetLastError();
}
/*
* Get required size for property
*/
bRet = EvtGetPublisherMetadataProperty(
pubHandle,
PropertyId,
0,
bufSize,
value,
&bufUsedOrReqd);
if (!bRet && ((err = GetLastError()) != ERROR_INSUFFICIENT_BUFFER))
{
return err;
}
else if (bRet) /* Didn't expect this to succeed */
{
return ERROR_INVALID_STATE;
}
value = (PEVT_VARIANT)g_malloc(bufUsedOrReqd);
if (!value)
{
return ERROR_INSUFFICIENT_BUFFER;
}
bufSize = bufUsedOrReqd;
/*
* Get the property value
*/
bRet = EvtGetPublisherMetadataProperty(
pubHandle,
PropertyId,
0,
bufSize,
value,
&bufUsedOrReqd);
if (!bRet)
{
g_free(value);
return GetLastError();
}
*Value = value;
return ERROR_SUCCESS;
}
wtap_open_return_val etw_dump(const char* etl_filename, const char* pcapng_filename, const char* params, int* err, gchar** err_info)
{
EVENT_TRACE_LOGFILE log_file = { 0 };
WCHAR w_etl_filename[FILENAME_MAX] = { 0 };
wtap_open_return_val returnVal = WTAP_OPEN_MINE;
SUPER_EVENT_TRACE_PROPERTIES super_trace_properties = { 0 };
super_trace_properties.prop.Wnode.BufferSize = sizeof(SUPER_EVENT_TRACE_PROPERTIES);
super_trace_properties.prop.Wnode.ClientContext = 2;
super_trace_properties.prop.Wnode.Flags = WNODE_FLAG_TRACED_GUID;
super_trace_properties.prop.LoggerNameOffset = sizeof(EVENT_TRACE_PROPERTIES);
super_trace_properties.prop.LogFileMode = EVENT_TRACE_REAL_TIME_MODE;
TRACEHANDLE traceControllerHandle = (TRACEHANDLE)INVALID_HANDLE_VALUE;
TRACEHANDLE trace_handle = INVALID_PROCESSTRACE_HANDLE;
SecureZeroMemory(g_provider_filters, sizeof(g_provider_filters));
SecureZeroMemory(g_err_info, FILENAME_MAX);
g_err = ERROR_SUCCESS;
g_num_events = 0;
g_is_live_session = FALSE;
if (params)
{
int opt_result = 0;
int option_idx = 0;
int provider_idx = 0;
char** params_array = NULL;
int params_array_num = 0;
WCHAR provider_id[FILENAME_MAX] = { 0 };
ULONG convert_level = 0;
params_array = g_strsplit(params, " ", -1);
while (params_array[params_array_num])
{
params_array_num++;
}
ws_optind = 0;
while ((opt_result = ws_getopt_long(params_array_num, params_array, ":", longopts, &option_idx)) != -1) {
switch (opt_result) {
case OPT_PROVIDER:
mbstowcs(provider_id, ws_optarg, FILENAME_MAX);
if (UuidFromString(provider_id, &g_provider_filters[provider_idx].ProviderId) == RPC_S_INVALID_STRING_UUID)
{
PEVT_VARIANT value = NULL;
*err = GetPropertyValue(
provider_id,
EvtPublisherMetadataPublisherGuid,
&value);
/*
* Copy returned GUID locally
*/
if (*err == ERROR_SUCCESS)
{
if (value->Type == EvtVarTypeGuid && value->GuidVal)
{
g_provider_filters[provider_idx].ProviderId = *(value->GuidVal);
}
else
{
*err = ERROR_INVALID_DATA;
}
}
else
{
*err_info = g_strdup_printf("Cannot convert provider %s to a GUID, err is 0x%x", ws_optarg, *err);
return WTAP_OPEN_ERROR;
}
g_free(value);
}
if (IsEqualGUID(&g_provider_filters[0].ProviderId, &ZeroGuid))
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("Provider %s is zero, err is 0x%x", ws_optarg, *err);
return WTAP_OPEN_ERROR;
}
provider_idx++;
break;
case OPT_KEYWORD:
if (provider_idx == 0)
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("-k parameter must follow -p, err is 0x%x", *err);
return WTAP_OPEN_ERROR;
}
g_provider_filters[provider_idx - 1].Keyword = _strtoui64(ws_optarg, NULL, 0);
if (!g_provider_filters[provider_idx - 1].Keyword)
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("Keyword %s cannot be converted, err is 0x%x", ws_optarg, *err);
return WTAP_OPEN_ERROR;
}
break;
case OPT_LEVEL:
if (provider_idx == 0)
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("-l parameter must follow -p, err is 0x%x", *err);
return WTAP_OPEN_ERROR;
}
convert_level = strtoul(ws_optarg, NULL, 0);
if (convert_level > UCHAR_MAX)
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("Level %s is bigger than 0xff, err is 0x%x", ws_optarg, *err);
return WTAP_OPEN_ERROR;
}
if (!convert_level)
{
*err = ERROR_INVALID_PARAMETER;
*err_info = g_strdup_printf("Level %s cannot be converted, err is 0x%x", ws_optarg, *err);
return WTAP_OPEN_ERROR;
}
g_provider_filters[provider_idx - 1].Level = (UCHAR)convert_level;
break;
}
}
g_strfreev(params_array);
}
/* do/while(FALSE) is used to jump out of loop so no complex nested if/else is needed */
do
{
/* Read ETW from an etl file */
if (etl_filename)
{
mbstowcs(w_etl_filename, etl_filename, FILENAME_MAX);
log_file.LogFileName = w_etl_filename;
log_file.ProcessTraceMode = PROCESS_TRACE_MODE_EVENT_RECORD;
log_file.EventRecordCallback = event_callback;
log_file.Context = NULL;
}
else
{
/*
* Try the best to stop the leftover session since extcap has no way to cleanup when stop capturing. See issue
* https://gitlab.com/wireshark/wireshark/-/issues/17131
*/
ControlTrace((TRACEHANDLE)NULL, LOGGER_NAME, &super_trace_properties.prop, EVENT_TRACE_CONTROL_STOP);
g_is_live_session = TRUE;
log_file.LoggerName = LOGGER_NAME;
log_file.LogFileName = NULL;
log_file.ProcessTraceMode = PROCESS_TRACE_MODE_REAL_TIME | PROCESS_TRACE_MODE_EVENT_RECORD;
log_file.EventRecordCallback = event_callback;
log_file.BufferCallback = NULL;
log_file.Context = NULL;
*err = StartTrace(
&traceControllerHandle,
log_file.LoggerName,
&super_trace_properties.prop);
if (*err != ERROR_SUCCESS)
{
*err_info = g_strdup_printf("StartTrace failed with %u", *err);
returnVal = WTAP_OPEN_ERROR;
break;
}
for (int i = 0; i < ARRAYSIZE(g_provider_filters); i++)
{
if (IsEqualGUID(&g_provider_filters[i].ProviderId, &ZeroGuid))
{
break;
}
*err = EnableTraceEx(
&g_provider_filters[i].ProviderId,
NULL,
traceControllerHandle,
TRUE,
g_provider_filters[i].Level,
g_provider_filters[i].Keyword,
0,
0,
NULL);
if (*err != ERROR_SUCCESS)
{
*err_info = g_strdup_printf("EnableTraceEx failed with %u", *err);
returnVal = WTAP_OPEN_ERROR;
break;
}
}
}
trace_handle = OpenTrace(&log_file);
if (trace_handle == INVALID_PROCESSTRACE_HANDLE) {
*err = GetLastError();
*err_info = g_strdup_printf("OpenTrace failed with %u", err);
returnVal = WTAP_OPEN_NOT_MINE;
break;
}
g_pdh = etw_dump_open(pcapng_filename, err, err_info);
if (g_pdh == NULL)
{
returnVal = WTAP_OPEN_ERROR;
break;
}
*err = ProcessTrace(&trace_handle, 1, 0, 0);
if (*err != ERROR_SUCCESS) {
returnVal = WTAP_OPEN_ERROR;
*err_info = g_strdup_printf("ProcessTrace failed with %u", err);
break;
}
if (g_err != ERROR_SUCCESS)
{
*err = g_err;
*err_info = g_strdup(g_err_info);
returnVal = WTAP_OPEN_ERROR;
break;
}
if (!g_num_events) {
*err = ERROR_NO_DATA;
*err_info = g_strdup_printf("Didn't find any etw event");
returnVal = WTAP_OPEN_NOT_MINE;
break;
}
} while (FALSE);
if (trace_handle != INVALID_PROCESSTRACE_HANDLE)
{
CloseTrace(trace_handle);
}
if (g_pdh != NULL)
{
if (*err == ERROR_SUCCESS)
{
if (!wtap_dump_close(g_pdh, err, err_info))
{
returnVal = WTAP_OPEN_ERROR;
}
}
else
{
int err_ignore;
gchar* err_info_ignore = NULL;
if (!wtap_dump_close(g_pdh, &err_ignore, &err_info_ignore))
{
returnVal = WTAP_OPEN_ERROR;
g_free(err_info_ignore);
}
}
}
return returnVal;
}
BOOL is_event_filtered_out(PEVENT_RECORD ev)
{
if (g_is_live_session)
{
return FALSE;
}
if (IsEqualGUID(&g_provider_filters[0].ProviderId, &ZeroGuid))
{
return FALSE;
}
for (int i = 0; i < ARRAYSIZE(g_provider_filters); i++)
{
if (IsEqualGUID(&g_provider_filters[i].ProviderId, &ev->EventHeader.ProviderId))
{
return FALSE;
}
if (IsEqualGUID(&g_provider_filters[i].ProviderId, &ZeroGuid))
{
break;
}
}
return TRUE;
}
static void WINAPI event_callback(PEVENT_RECORD ev)
{
ULARGE_INTEGER timestamp;
g_num_events++;
if (is_event_filtered_out(ev))
{
return;
}
/*
* 100ns since 1/1/1601 -> usec since 1/1/1970.
* The offset of 11644473600 seconds can be calculated with a couple of calls to SystemTimeToFileTime.
*/
timestamp.QuadPart = (ev->EventHeader.TimeStamp.QuadPart / 10) - 11644473600000000ll;
/* Write OPN events that needs mbim sub dissector */
if (IsEqualGUID(&ev->EventHeader.ProviderId, &mbb_provider))
{
etw_dump_write_opn_event(ev, timestamp);
}
/* TODO:: You can write events from other providers that needs specific sub dissector */
#if 0
else if (IsEqualGUID(&ev->EventHeader.ProviderId, &ndis_packcapture_provider))
{
etw_dump_write_packet_event(ev, timestamp);
}
#endif
/* Write any event form other providers other than above */
else
{
etw_dump_write_general_event(ev, timestamp);
}
}
wtap_dumper* etw_dump_open(const char* pcapng_filename, int* err, gchar** err_info)
{
wtap_dump_params params = { 0 };
GArray* shb_hdrs = NULL;
wtap_block_t shb_hdr;
wtapng_iface_descriptions_t* idb_info;
GArray* idb_datas;
wtap_block_t idb_data;
wtapng_if_descr_mandatory_t* descr_mand;
wtap_dumper* pdh = NULL;
shb_hdrs = g_array_new(FALSE, FALSE, sizeof(wtap_block_t));
shb_hdr = wtap_block_create(WTAP_BLOCK_SECTION);
g_array_append_val(shb_hdrs, shb_hdr);
/* In the future, may create multiple WTAP_BLOCK_IF_ID_AND_INFO separately for IP packet */
idb_info = g_new(wtapng_iface_descriptions_t, 1);
idb_datas = g_array_new(FALSE, FALSE, sizeof(wtap_block_t));
idb_data = wtap_block_create(WTAP_BLOCK_IF_ID_AND_INFO);
descr_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(idb_data);
descr_mand->tsprecision = WTAP_TSPREC_USEC;
descr_mand->wtap_encap = WTAP_ENCAP_ETW;
/* Timestamp for each pcapng packet is usec units, so time_units_per_second need be set to 10^6 */
descr_mand->time_units_per_second = G_USEC_PER_SEC;
g_array_append_val(idb_datas, idb_data);
idb_info->interface_data = idb_datas;
params.encap = WTAP_ENCAP_ETW;
params.snaplen = 0;
params.tsprec = WTAP_TSPREC_USEC;
params.shb_hdrs = shb_hdrs;
params.idb_inf = idb_info;
pdh = wtap_dump_open(pcapng_filename, wtap_pcapng_file_type_subtype(), WTAP_UNCOMPRESSED, &params, err, err_info);
if (shb_hdrs)
{
wtap_block_array_free(shb_hdrs);
}
if (params.idb_inf)
{
if (params.idb_inf->interface_data)
{
wtap_block_array_free(params.idb_inf->interface_data);
}
g_free(params.idb_inf);
params.idb_inf = NULL;
}
return pdh;
}
ULONG wtap_etl_record_buffer_init(WTAP_ETL_RECORD** out_etl_record, PEVENT_RECORD ev, BOOLEAN include_user_data, WCHAR* message, WCHAR* provider_name)
{
ULONG total_packet_length = sizeof(WTAP_ETL_RECORD);
WTAP_ETL_RECORD* etl_record = NULL;
ULONG user_data_length = 0;
ULONG user_data_offset = 0;
ULONG message_offset = 0;
ULONG provider_name_offset = 0;
ULONG message_length = 0;
ULONG provider_name_length = 0;
if (include_user_data)
{
if (ev->UserDataLength < MAX_PACKET_SIZE)
{
user_data_length = ev->UserDataLength;
}
else
{
user_data_length = MAX_PACKET_SIZE;
}
user_data_offset = sizeof(WTAP_ETL_RECORD);
total_packet_length += ROUND_UP_COUNT(user_data_length, sizeof(LONG));
}
if (message && message[0] != L'\0')
{
message_offset = total_packet_length;
message_length = (ULONG)((wcslen(message) + 1) * sizeof(WCHAR));
total_packet_length += ROUND_UP_COUNT(message_length, sizeof(LONG));
}
if (provider_name && provider_name[0] != L'\0')
{
provider_name_offset = total_packet_length;
provider_name_length = (ULONG)((wcslen(provider_name) + 1) * sizeof(WCHAR));
total_packet_length += ROUND_UP_COUNT(provider_name_length, sizeof(LONG));
}
etl_record = g_malloc(total_packet_length);
SecureZeroMemory(etl_record, total_packet_length);
etl_record->EventHeader = ev->EventHeader;
etl_record->BufferContext = ev->BufferContext;
etl_record->UserDataLength = user_data_length;
etl_record->MessageLength = message_length;
etl_record->ProviderLength = provider_name_length;
if (user_data_offset)
{
memcpy(ADD_OFFSET_TO_POINTER(etl_record, user_data_offset), ev->UserData, user_data_length);
}
if (message_offset)
{
memcpy(ADD_OFFSET_TO_POINTER(etl_record, message_offset), message, message_length);
}
if (provider_name_offset)
{
memcpy(ADD_OFFSET_TO_POINTER(etl_record, provider_name_offset), provider_name, provider_name_length);
}
*out_etl_record = etl_record;
return total_packet_length;
}
void wtap_etl_rec_dump(ULARGE_INTEGER timestamp, WTAP_ETL_RECORD* etl_record, ULONG total_packet_length, BOOLEAN is_inbound)
{
gchar* err_info;
int err;
wtap_rec rec = { 0 };
wtap_rec_init(&rec);
rec.rec_header.packet_header.caplen = total_packet_length;
rec.rec_header.packet_header.len = total_packet_length;
rec.rec_header.packet_header.pkt_encap = WTAP_ENCAP_ETW;
rec.block = wtap_block_create(WTAP_BLOCK_PACKET);
wtap_block_add_uint32_option(rec.block, OPT_PKT_FLAGS, is_inbound ? PACK_FLAGS_DIRECTION_INBOUND : PACK_FLAGS_DIRECTION_OUTBOUND);
/* Convert usec of the timestamp into nstime_t */
rec.ts.secs = (time_t)(timestamp.QuadPart / G_USEC_PER_SEC);
rec.ts.nsecs = (int)(((timestamp.QuadPart % G_USEC_PER_SEC) * G_NSEC_PER_SEC) / G_USEC_PER_SEC);
/* and save the packet */
if (!wtap_dump(g_pdh, &rec, (guint8*)etl_record, &err, &err_info)) {
g_err = err;
sprintf_s(g_err_info, sizeof(g_err_info), "wtap_dump failed, %s", err_info);
g_free(err_info);
}
/* Only flush when live session */
if (g_is_live_session && !wtap_dump_flush(g_pdh, &err)) {
g_err = err;
sprintf_s(g_err_info, sizeof(g_err_info), "wtap_dump failed, %d", err);
}
wtap_rec_cleanup(&rec);
}
void etw_dump_write_opn_event(PEVENT_RECORD ev, ULARGE_INTEGER timestamp)
{
WTAP_ETL_RECORD* etl_record = NULL;
ULONG total_packet_length = 0;
BOOLEAN is_inbound = FALSE;
/* 0x80000000 mask the function to host message */
is_inbound = ((*(INT32*)(ev->UserData)) & 0x80000000) ? TRUE : FALSE;
total_packet_length = wtap_etl_record_buffer_init(&etl_record, ev, TRUE, NULL, NULL);
wtap_etl_rec_dump(timestamp, etl_record, total_packet_length, is_inbound);
g_free(etl_record);
}
void etw_dump_write_event_head_only(PEVENT_RECORD ev, ULARGE_INTEGER timestamp)
{
WTAP_ETL_RECORD* etl_record = NULL;
ULONG total_packet_length = 0;
total_packet_length = wtap_etl_record_buffer_init(&etl_record, ev, FALSE, NULL, NULL);
wtap_etl_rec_dump(timestamp, etl_record, total_packet_length, FALSE);
g_free(etl_record);
}
void etw_dump_write_general_event(PEVENT_RECORD ev, ULARGE_INTEGER timestamp)
{
PTRACE_EVENT_INFO pInfo = NULL;
PBYTE pUserData = NULL;
PBYTE pEndOfUserData = NULL;
DWORD PointerSize = 0;
PROPERTY_KEY_VALUE* prop_arr = NULL;
DWORD dwTopLevelPropertyCount = 0;
DWORD dwSizeofArray = 0;
WCHAR wszMessageBuffer[MAX_LOG_LINE_LENGTH] = { 0 };
WCHAR formatMessage[MAX_LOG_LINE_LENGTH] = { 0 };
WTAP_ETL_RECORD* etl_record = NULL;
ULONG total_packet_length = 0;
BOOLEAN is_message_dumped = FALSE;
do
{
/* Skip EventTrace events */
if (ev->EventHeader.Flags & EVENT_HEADER_FLAG_CLASSIC_HEADER &&
IsEqualGUID(&ev->EventHeader.ProviderId, &EventTraceGuid))
{
/*
* The first event in every ETL file contains the data from the file header.
* This is the same data as was returned in the EVENT_TRACE_LOGFILEW by
* OpenTrace. Since we've already seen this information, we'll skip this
* event.
*/
break;
}
/* Skip events injected by the XPerf tracemerger - they will never be decodable */
if (IsEqualGUID(&ev->EventHeader.ProviderId, &ImageIdGuid) ||
IsEqualGUID(&ev->EventHeader.ProviderId, &SystemConfigExGuid) ||
IsEqualGUID(&ev->EventHeader.ProviderId, &EventMetadataGuid))
{
break;
}
if (!get_event_information(ev, &pInfo))
{
break;
}
/* Skip those events without format message since most of them need special logic to decode like NDIS-PackCapture */
if (pInfo->EventMessageOffset <= 0)
{
break;
}
if (EVENT_HEADER_FLAG_32_BIT_HEADER == (ev->EventHeader.Flags & EVENT_HEADER_FLAG_32_BIT_HEADER))
{
PointerSize = 4;
}
else
{
PointerSize = 8;
}
pUserData = (PBYTE)ev->UserData;
pEndOfUserData = (PBYTE)ev->UserData + ev->UserDataLength;
dwTopLevelPropertyCount = pInfo->TopLevelPropertyCount;
if (dwTopLevelPropertyCount > 0)
{
prop_arr = g_malloc(sizeof(PROPERTY_KEY_VALUE) * dwTopLevelPropertyCount);
dwSizeofArray = dwTopLevelPropertyCount * sizeof(PROPERTY_KEY_VALUE);
SecureZeroMemory(prop_arr, dwSizeofArray);
}
StringCbCopy(formatMessage, MAX_LOG_LINE_LENGTH, (LPWSTR)ADD_OFFSET_TO_POINTER(pInfo, pInfo->EventMessageOffset));
for (USHORT i = 0; i < dwTopLevelPropertyCount; i++)
{
pUserData = extract_properties(ev, pInfo, PointerSize, i, pUserData, pEndOfUserData, &prop_arr[i]);
if (NULL == pUserData)
{
break;
}
}
format_message(formatMessage, prop_arr, dwTopLevelPropertyCount, wszMessageBuffer, sizeof(wszMessageBuffer));
total_packet_length = wtap_etl_record_buffer_init(&etl_record, ev, FALSE, wszMessageBuffer, (WCHAR*)ADD_OFFSET_TO_POINTER(pInfo, pInfo->ProviderNameOffset));
wtap_etl_rec_dump(timestamp, etl_record, total_packet_length, FALSE);
g_free(etl_record);
is_message_dumped = TRUE;
} while (FALSE);
if (NULL != prop_arr)
{
g_free(prop_arr);
prop_arr = NULL;
}
if (NULL != pInfo)
{
g_free(pInfo);
pInfo = NULL;
}
if (!is_message_dumped && g_include_undecidable_event)
{
etw_dump_write_event_head_only(ev, timestamp);
}
}
/*
* 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:
*/
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