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/*
Copyright(C) 2015-2017 Brazil
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "grn_logger.h"
#include "grn_ctx.h"
#include "grn_windows.h"
#include <string.h>
#ifdef WIN32
typedef struct _grn_windows_event_logger_data {
char *event_source_name;
HANDLE event_source;
} grn_windows_event_logger_data;
static void
windows_event_logger_log(grn_ctx *ctx, grn_log_level level,
const char *timestamp, const char *title,
const char *message, const char *location,
void *user_data)
{
grn_windows_event_logger_data *data = user_data;
WORD type;
WORD category = 0;
DWORD event_id = 0;
PSID user_sid = NULL;
WORD n_strings = 1;
DWORD event_data_size = 0;
const WCHAR *strings[1];
LPVOID event_data = NULL;
const char level_marks[] = " EACewnid-";
grn_obj formatted_buffer;
UINT code_page;
DWORD convert_flags = 0;
int n_converted_chars;
switch (level) {
case GRN_LOG_NONE :
return;
break;
case GRN_LOG_EMERG :
case GRN_LOG_ALERT :
case GRN_LOG_CRIT :
case GRN_LOG_ERROR :
type = EVENTLOG_ERROR_TYPE;
break;
case GRN_LOG_WARNING :
type = EVENTLOG_WARNING_TYPE;
break;
case GRN_LOG_NOTICE :
case GRN_LOG_INFO :
case GRN_LOG_DEBUG :
case GRN_LOG_DUMP :
type = EVENTLOG_INFORMATION_TYPE;
break;
default :
type = EVENTLOG_ERROR_TYPE;
break;
}
if (data->event_source == INVALID_HANDLE_VALUE) {
data->event_source = RegisterEventSourceA(NULL, data->event_source_name);
if (data->event_source == INVALID_HANDLE_VALUE) {
return;
}
}
GRN_TEXT_INIT(&formatted_buffer, 0);
if (location && location[0]) {
grn_text_printf(ctx, &formatted_buffer, "%s|%c|%s %s %s",
timestamp, level_marks[level], title, message, location);
} else {
grn_text_printf(ctx, &formatted_buffer, "%s|%c|%s %s",
timestamp, level_marks[level], title, message);
}
code_page = grn_windows_encoding_to_code_page(ctx->encoding);
n_converted_chars = MultiByteToWideChar(code_page,
convert_flags,
GRN_TEXT_VALUE(&formatted_buffer),
GRN_TEXT_LEN(&formatted_buffer),
NULL,
0);
#define CONVERTED_BUFFER_SIZE 512
if (n_converted_chars < CONVERTED_BUFFER_SIZE) {
WCHAR converted_buffer[CONVERTED_BUFFER_SIZE];
n_converted_chars = MultiByteToWideChar(code_page,
convert_flags,
GRN_TEXT_VALUE(&formatted_buffer),
GRN_TEXT_LEN(&formatted_buffer),
converted_buffer,
CONVERTED_BUFFER_SIZE);
converted_buffer[n_converted_chars] = L'\0';
strings[0] = converted_buffer;
ReportEventW(data->event_source, type, category, event_id, user_sid,
n_strings, event_data_size,
strings, event_data);
#undef CONVERTED_BUFFER_SIZE
} else {
WCHAR *converted;
converted = GRN_MALLOCN(WCHAR, n_converted_chars);
n_converted_chars = MultiByteToWideChar(code_page,
convert_flags,
GRN_TEXT_VALUE(&formatted_buffer),
GRN_TEXT_LEN(&formatted_buffer),
converted,
n_converted_chars);
converted[n_converted_chars] = L'\0';
strings[0] = converted;
ReportEventW(data->event_source, type, category, event_id, user_sid,
n_strings, event_data_size,
strings, event_data);
GRN_FREE(converted);
}
GRN_OBJ_FIN(ctx, &formatted_buffer);
}
static void
windows_event_logger_reopen(grn_ctx *ctx, void *user_data)
{
}
static void
windows_event_logger_fin(grn_ctx *ctx, void *user_data)
{
grn_windows_event_logger_data *data = user_data;
free(data->event_source_name);
if (data->event_source != INVALID_HANDLE_VALUE) {
DeregisterEventSource(data->event_source);
}
free(data);
}
#endif /* WIN32 */
grn_rc
grn_windows_event_logger_set(grn_ctx *ctx, const char *event_source_name)
{
#ifdef WIN32
grn_rc rc;
grn_logger windows_event_logger;
grn_windows_event_logger_data *data;
if (ctx) {
GRN_API_ENTER;
}
data = malloc(sizeof(grn_windows_event_logger_data));
if (!data) {
if (ctx) {
ERR(GRN_NO_MEMORY_AVAILABLE,
"failed to allocate user data for Windows event logger");
GRN_API_RETURN(ctx->rc);
} else {
return GRN_NO_MEMORY_AVAILABLE;
}
}
if (event_source_name) {
data->event_source_name = grn_strdup_raw(event_source_name);
} else {
data->event_source_name = grn_strdup_raw("libgroonga");
}
data->event_source = INVALID_HANDLE_VALUE;
windows_event_logger.max_level = GRN_LOG_DEFAULT_LEVEL;
windows_event_logger.flags = GRN_LOG_TIME | GRN_LOG_MESSAGE;
windows_event_logger.user_data = data;
windows_event_logger.log = windows_event_logger_log;
windows_event_logger.reopen = windows_event_logger_reopen;
windows_event_logger.fin = windows_event_logger_fin;
rc = grn_logger_set(ctx, &windows_event_logger);
if (rc != GRN_SUCCESS) {
windows_event_logger.fin(ctx, windows_event_logger.user_data);
}
if (ctx) {
GRN_API_RETURN(rc);
} else {
return rc;
}
#else /* WIN32 */
return GRN_FUNCTION_NOT_IMPLEMENTED;
#endif /* WIN32 */
}
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