/src/FreeRDP/winpr/libwinpr/utils/wlog/Layout.c

Source (jump to first uncovered line)
/**
 * WinPR: Windows Portable Runtime
 * WinPR Logger
 *
 * Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <winpr/config.h>

#include <stdio.h>
#include <string.h>
#include <stdarg.h>

#include <winpr/crt.h>
#include <winpr/assert.h>
#include <winpr/print.h>
#include <winpr/sysinfo.h>
#include <winpr/environment.h>

#include "wlog.h"

#include "Layout.h"

#if defined __linux__ && !defined ANDROID
#include <unistd.h>
#include <sys/syscall.h>
#endif

#ifndef MIN
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#endif

struct format_option_recurse;

struct format_option
{
  const char* fmt;
  size_t fmtlen;
  const char* replace;
  size_t replacelen;
  const char* (*fkt)(void*);
  void* arg;
  const char* (*ext)(const struct format_option* opt, const char* str, size_t* preplacelen,
                     size_t* pskiplen);
  struct format_option_recurse* recurse;
};

struct format_option_recurse
{
  struct format_option* options;
  size_t nroptions;
  wLog* log;
  wLogLayout* layout;
  wLogMessage* message;
  char buffer[WLOG_MAX_PREFIX_SIZE];
};

/**
 * Log Layout
 */

static void WLog_PrintMessagePrefixVA(wLog* log, wLogMessage* message, const char* format,
                                      va_list args)
{
  WINPR_ASSERT(message);
  vsnprintf(message->PrefixString, WLOG_MAX_PREFIX_SIZE - 1, format, args);
}

static void WLog_PrintMessagePrefix(wLog* log, wLogMessage* message, const char* format, ...)
{
  va_list args;
  va_start(args, format);
  WLog_PrintMessagePrefixVA(log, message, format, args);
  va_end(args);
}

static const char* get_tid(void* arg)
{
  char* str = arg;
  size_t tid;
#if defined __linux__ && !defined ANDROID
  /* On Linux we prefer to see the LWP id */
  tid = (size_t)syscall(SYS_gettid);
#else
  tid = (size_t)GetCurrentThreadId();
#endif
  sprintf(str, "%08" PRIxz, tid);
  return str;
}

static BOOL log_invalid_fmt(const char* what)
{
  fprintf(stderr, "Invalid format string '%s'\n", what);
  return FALSE;
}

static BOOL check_and_log_format_size(char* format, size_t size, size_t index, size_t add)
{
  /* format string must be '\0' terminated, so abort at size - 1 */
  if (index + add + 1 >= size)
  {
    fprintf(stderr,
            "Format string too long ['%s', max %" PRIuz ", used %" PRIuz ", adding %" PRIuz
            "]\n",
            format, size, index, add);
    return FALSE;
  }
  return TRUE;
}

static int opt_compare_fn(const void* a, const void* b)
{
  const char* what = a;
  const struct format_option* opt = b;
  if (!opt)
    return -1;
  return strncmp(what, opt->fmt, opt->fmtlen);
}

static BOOL has_format_arg(const char* str, size_t len)
{
  if (!str || (len == 0))
    return FALSE;

  for (size_t x = 0; x < len; x++)
  {
    char c = str[x];
    if (c == '%')
      return TRUE;
  }

  return FALSE;
}

static BOOL replace_format_string(const char* FormatString, struct format_option_recurse* recurse,
                                  char* format, size_t formatlen);

static const char* skip_if_null(const struct format_option* opt, const char* fmt,
                                size_t* preplacelen, size_t* pskiplen)
{
  WINPR_ASSERT(opt);
  WINPR_ASSERT(fmt);
  WINPR_ASSERT(preplacelen);
  WINPR_ASSERT(pskiplen);

  *preplacelen = 0;
  *pskiplen = 0;

  const char* str = &fmt[opt->fmtlen]; /* Skip first %{ from string */
  const char* end = strstr(str, opt->replace);
  if (!end)
    return NULL;
  *pskiplen = end - fmt + opt->replacelen;

  if (!opt->arg)
    return NULL;

  const size_t replacelen = end - str;

  char buffer[WLOG_MAX_PREFIX_SIZE] = { 0 };
  memcpy(buffer, str, MIN(replacelen, ARRAYSIZE(buffer) - 1));

  if (!replace_format_string(buffer, opt->recurse, opt->recurse->buffer,
                             ARRAYSIZE(opt->recurse->buffer)))
    return NULL;

  *preplacelen = strnlen(opt->recurse->buffer, ARRAYSIZE(opt->recurse->buffer));
  return opt->recurse->buffer;
}

static BOOL replace_format_string(const char* FormatString, struct format_option_recurse* recurse,
                                  char* format, size_t formatlen)
{
  WINPR_ASSERT(FormatString);
  WINPR_ASSERT(recurse);

  size_t index = 0;

  while (*FormatString)
  {
    const struct format_option* opt =
        bsearch(FormatString, recurse->options, recurse->nroptions,
                sizeof(struct format_option), opt_compare_fn);
    if (opt)
    {
      size_t replacelen = opt->replacelen;
      size_t fmtlen = opt->fmtlen;
      const char* replace = opt->replace;
      const void* arg = opt->arg;

      if (opt->ext)
        replace = opt->ext(opt, FormatString, &replacelen, &fmtlen);
      if (opt->fkt)
        arg = opt->fkt(opt->arg);

      if (replace && (replacelen > 0))
      {
        const int rc = _snprintf(&format[index], formatlen - index, replace, arg);
        if (rc < 0)
          return FALSE;
        if (!check_and_log_format_size(format, formatlen, index, rc))
          return FALSE;
        index += rc;
      }
      FormatString += fmtlen;
    }
    else
    {
      /* Unknown format string */
      if (*FormatString == '%')
        return log_invalid_fmt(FormatString);

      if (!check_and_log_format_size(format, formatlen, index, 1))
        return FALSE;
      format[index++] = *FormatString++;
    }
  }

  if (!check_and_log_format_size(format, formatlen, index, 0))
    return FALSE;
  return TRUE;
}

BOOL WLog_Layout_GetMessagePrefix(wLog* log, wLogLayout* layout, wLogMessage* message)
{
  char format[WLOG_MAX_PREFIX_SIZE] = { 0 };

  WINPR_ASSERT(layout);
  WINPR_ASSERT(message);

  char tid[32] = { 0 };
  SYSTEMTIME localTime = { 0 };
  GetLocalTime(&localTime);

  struct format_option_recurse recurse = {
    .options = NULL, .nroptions = 0, .log = log, .layout = layout, .message = message
  };

#define ENTRY(x) x, sizeof(x) - 1
  struct format_option options[] = {
    { ENTRY("%ctx"), ENTRY("%s"), log->custom, log->context, NULL, &recurse }, /* log context */
    { ENTRY("%dw"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wDayOfWeek, NULL,
      &recurse }, /* day of week */
    { ENTRY("%dy"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wDay, NULL,
      &recurse }, /* day of year */
    { ENTRY("%fl"), ENTRY("%s"), NULL, (void*)message->FileName, NULL, &recurse }, /* file */
    { ENTRY("%fn"), ENTRY("%s"), NULL, (void*)message->FunctionName, NULL,
      &recurse }, /* function */
    { ENTRY("%hr"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wHour, NULL,
      &recurse }, /* hours */
    { ENTRY("%ln"), ENTRY("%" PRIuz), NULL, (void*)(size_t)message->LineNumber, NULL,
      &recurse }, /* line number */
    { ENTRY("%lv"), ENTRY("%s"), NULL, (void*)WLOG_LEVELS[message->Level], NULL,
      &recurse }, /* log level */
    { ENTRY("%mi"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wMinute, NULL,
      &recurse }, /* minutes */
    { ENTRY("%ml"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wMilliseconds, NULL,
      &recurse },                                                   /* milliseconds */
    { ENTRY("%mn"), ENTRY("%s"), NULL, log->Name, NULL, &recurse }, /* module name */
    { ENTRY("%mo"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wMonth, NULL,
      &recurse }, /* month */
    { ENTRY("%pid"), ENTRY("%u"), NULL, (void*)(size_t)GetCurrentProcessId(), NULL,
      &recurse }, /* process id */
    { ENTRY("%se"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wSecond, NULL,
      &recurse },                                                 /* seconds */
    { ENTRY("%tid"), ENTRY("%s"), get_tid, tid, NULL, &recurse }, /* thread id */
    { ENTRY("%yr"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wYear, NULL,
      &recurse }, /* year */
    { ENTRY("%{"), ENTRY("%}"), NULL, log->context, skip_if_null,
      &recurse }, /* skip if no context */
  };

  recurse.options = options;
  recurse.nroptions = ARRAYSIZE(options);

  if (!replace_format_string(layout->FormatString, &recurse, format, ARRAYSIZE(format)))
    return FALSE;
  WLog_PrintMessagePrefix(log, message, format);

  return TRUE;
}

wLogLayout* WLog_GetLogLayout(wLog* log)
{
  wLogAppender* appender;
  appender = WLog_GetLogAppender(log);
  return appender->Layout;
}

BOOL WLog_Layout_SetPrefixFormat(wLog* log, wLogLayout* layout, const char* format)
{
  free(layout->FormatString);
  layout->FormatString = NULL;

  if (format)
  {
    layout->FormatString = _strdup(format);

    if (!layout->FormatString)
      return FALSE;
  }

  return TRUE;
}

wLogLayout* WLog_Layout_New(wLog* log)
{
  LPCSTR prefix = "WLOG_PREFIX";
  DWORD nSize;
  char* env = NULL;
  wLogLayout* layout;
  layout = (wLogLayout*)calloc(1, sizeof(wLogLayout));

  if (!layout)
    return NULL;

  nSize = GetEnvironmentVariableA(prefix, NULL, 0);

  if (nSize)
  {
    env = (LPSTR)malloc(nSize);

    if (!env)
    {
      free(layout);
      return NULL;
    }

    if (GetEnvironmentVariableA(prefix, env, nSize) != nSize - 1)
    {
      free(env);
      free(layout);
      return NULL;
    }
  }

  if (env)
    layout->FormatString = env;
  else
  {
#ifdef ANDROID
    layout->FormatString = _strdup("[pid=%pid:tid=%tid] - [%fn]%{[%ctx]%}: ");
#else
    layout->FormatString =
        _strdup("[%hr:%mi:%se:%ml] [%pid:%tid] [%lv][%mn] - [%fn]%{[%ctx]%}: ");
#endif

    if (!layout->FormatString)
    {
      free(layout);
      return NULL;
    }
  }

  return layout;
}

void WLog_Layout_Free(wLog* log, wLogLayout* layout)
{
  if (layout)
  {
    if (layout->FormatString)
    {
      free(layout->FormatString);
      layout->FormatString = NULL;
    }

    free(layout);
  }
}

Coverage Report

Created: 2023-09-25 06:56

Line	Count	Source (jump to first uncovered line)
1		/**
2		* WinPR: Windows Portable Runtime
3		* WinPR Logger
4		*
5		* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
6		*
7		* Licensed under the Apache License, Version 2.0 (the "License");
8		* you may not use this file except in compliance with the License.
9		* You may obtain a copy of the License at
10		*
11		* http://www.apache.org/licenses/LICENSE-2.0
12		*
13		* Unless required by applicable law or agreed to in writing, software
14		* distributed under the License is distributed on an "AS IS" BASIS,
15		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16		* See the License for the specific language governing permissions and
17		* limitations under the License.
18		*/
19
20		#include <winpr/config.h>
21
22		#include <stdio.h>
23		#include <string.h>
24		#include <stdarg.h>
25
26		#include <winpr/crt.h>
27		#include <winpr/assert.h>
28		#include <winpr/print.h>
29		#include <winpr/sysinfo.h>
30		#include <winpr/environment.h>
31
32		#include "wlog.h"
33
34		#include "Layout.h"
35
36		#if defined __linux__ && !defined ANDROID
37		#include <unistd.h>
38		#include <sys/syscall.h>
39		#endif
40
41		#ifndef MIN
42	0	#define MIN(x, y) (((x) < (y)) ? (x) : (y))
43		#endif
44
45		struct format_option_recurse;
46
47		struct format_option
48		{
49		const char* fmt;
50		size_t fmtlen;
51		const char* replace;
52		size_t replacelen;
53		const char* (fkt)(void);
54		void* arg;
55		const char* (ext)(const struct format_option opt, const char* str, size_t* preplacelen,
56		size_t* pskiplen);
57		struct format_option_recurse* recurse;
58		};
59
60		struct format_option_recurse
61		{
62		struct format_option* options;
63		size_t nroptions;
64		wLog* log;
65		wLogLayout* layout;
66		wLogMessage* message;
67		char buffer[WLOG_MAX_PREFIX_SIZE];
68		};
69
70		/**
71		* Log Layout
72		*/
73
74		static void WLog_PrintMessagePrefixVA(wLog* log, wLogMessage* message, const char* format,
75		va_list args)
76	0	{
77	0	WINPR_ASSERT(message);
78	0	vsnprintf(message->PrefixString, WLOG_MAX_PREFIX_SIZE - 1, format, args);
79	0	}
80
81		static void WLog_PrintMessagePrefix(wLog* log, wLogMessage* message, const char* format, ...)
82	0	{
83	0	va_list args;
84	0	va_start(args, format);
85	0	WLog_PrintMessagePrefixVA(log, message, format, args);
86	0	va_end(args);
87	0	}
88
89		static const char* get_tid(void* arg)
90	0	{
91	0	char* str = arg;
92	0	size_t tid;
93	0	#if defined __linux__ && !defined ANDROID
94		/* On Linux we prefer to see the LWP id */
95	0	tid = (size_t)syscall(SYS_gettid);
96		#else
97		tid = (size_t)GetCurrentThreadId();
98		#endif
99	0	sprintf(str, "%08" PRIxz, tid);
100	0	return str;
101	0	}
102
103		static BOOL log_invalid_fmt(const char* what)
104	0	{
105	0	fprintf(stderr, "Invalid format string '%s'\n", what);
106	0	return FALSE;
107	0	}
108
109		static BOOL check_and_log_format_size(char* format, size_t size, size_t index, size_t add)
110	0	{
111		/* format string must be '\0' terminated, so abort at size - 1 */
112	0	if (index + add + 1 >= size)
113	0	{
114	0	fprintf(stderr,
115	0	"Format string too long ['%s', max %" PRIuz ", used %" PRIuz ", adding %" PRIuz
116	0	"]\n",
117	0	format, size, index, add);
118	0	return FALSE;
119	0	}
120	0	return TRUE;
121	0	}
122
123		static int opt_compare_fn(const void* a, const void* b)
124	0	{
125	0	const char* what = a;
126	0	const struct format_option* opt = b;
127	0	if (!opt)
128	0	return -1;
129	0	return strncmp(what, opt->fmt, opt->fmtlen);
130	0	}
131
132		static BOOL has_format_arg(const char* str, size_t len)
133	0	{
134	0	if (!str \|\| (len == 0))
135	0	return FALSE;
136	0
137	0	for (size_t x = 0; x < len; x++)
138	0	{
139	0	char c = str[x];
140	0	if (c == '%')
141	0	return TRUE;
142	0	}
143	0
144	0	return FALSE;
145	0	}
146
147		static BOOL replace_format_string(const char* FormatString, struct format_option_recurse* recurse,
148		char* format, size_t formatlen);
149
150		static const char* skip_if_null(const struct format_option* opt, const char* fmt,
151		size_t* preplacelen, size_t* pskiplen)
152	0	{
153	0	WINPR_ASSERT(opt);
154	0	WINPR_ASSERT(fmt);
155	0	WINPR_ASSERT(preplacelen);
156	0	WINPR_ASSERT(pskiplen);
157
158	0	*preplacelen = 0;
159	0	*pskiplen = 0;
160
161	0	const char* str = &fmt[opt->fmtlen]; /* Skip first %{ from string */
162	0	const char* end = strstr(str, opt->replace);
163	0	if (!end)
164	0	return NULL;
165	0	*pskiplen = end - fmt + opt->replacelen;
166
167	0	if (!opt->arg)
168	0	return NULL;
169
170	0	const size_t replacelen = end - str;
171
172	0	char buffer[WLOG_MAX_PREFIX_SIZE] = { 0 };
173	0	memcpy(buffer, str, MIN(replacelen, ARRAYSIZE(buffer) - 1));
174
175	0	if (!replace_format_string(buffer, opt->recurse, opt->recurse->buffer,
176	0	ARRAYSIZE(opt->recurse->buffer)))
177	0	return NULL;
178
179	0	*preplacelen = strnlen(opt->recurse->buffer, ARRAYSIZE(opt->recurse->buffer));
180	0	return opt->recurse->buffer;
181	0	}
182
183		static BOOL replace_format_string(const char* FormatString, struct format_option_recurse* recurse,
184		char* format, size_t formatlen)
185	0	{
186	0	WINPR_ASSERT(FormatString);
187	0	WINPR_ASSERT(recurse);
188
189	0	size_t index = 0;
190
191	0	while (*FormatString)
192	0	{
193	0	const struct format_option* opt =
194	0	bsearch(FormatString, recurse->options, recurse->nroptions,
195	0	sizeof(struct format_option), opt_compare_fn);
196	0	if (opt)
197	0	{
198	0	size_t replacelen = opt->replacelen;
199	0	size_t fmtlen = opt->fmtlen;
200	0	const char* replace = opt->replace;
201	0	const void* arg = opt->arg;
202
203	0	if (opt->ext)
204	0	replace = opt->ext(opt, FormatString, &replacelen, &fmtlen);
205	0	if (opt->fkt)
206	0	arg = opt->fkt(opt->arg);
207
208	0	if (replace && (replacelen > 0))
209	0	{
210	0	const int rc = _snprintf(&format[index], formatlen - index, replace, arg);
211	0	if (rc < 0)
212	0	return FALSE;
213	0	if (!check_and_log_format_size(format, formatlen, index, rc))
214	0	return FALSE;
215	0	index += rc;
216	0	}
217	0	FormatString += fmtlen;
218	0	}
219	0	else
220	0	{
221		/* Unknown format string */
222	0	if (*FormatString == '%')
223	0	return log_invalid_fmt(FormatString);
224
225	0	if (!check_and_log_format_size(format, formatlen, index, 1))
226	0	return FALSE;
227	0	format[index++] = *FormatString++;
228	0	}
229	0	}
230
231	0	if (!check_and_log_format_size(format, formatlen, index, 0))
232	0	return FALSE;
233	0	return TRUE;
234	0	}
235
236		BOOL WLog_Layout_GetMessagePrefix(wLog* log, wLogLayout* layout, wLogMessage* message)
237	0	{
238	0	char format[WLOG_MAX_PREFIX_SIZE] = { 0 };
239
240	0	WINPR_ASSERT(layout);
241	0	WINPR_ASSERT(message);
242
243	0	char tid[32] = { 0 };
244	0	SYSTEMTIME localTime = { 0 };
245	0	GetLocalTime(&localTime);
246
247	0	struct format_option_recurse recurse = {
248	0	.options = NULL, .nroptions = 0, .log = log, .layout = layout, .message = message
249	0	};
250
251	0	#define ENTRY(x) x, sizeof(x) - 1
252	0	struct format_option options[] = {
253	0	{ ENTRY("%ctx"), ENTRY("%s"), log->custom, log->context, NULL, &recurse }, /* log context */
254	0	{ ENTRY("%dw"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wDayOfWeek, NULL,
255	0	&recurse }, /* day of week */
256	0	{ ENTRY("%dy"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wDay, NULL,
257	0	&recurse }, /* day of year */
258	0	{ ENTRY("%fl"), ENTRY("%s"), NULL, (void)message->FileName, NULL, &recurse }, / file */
259	0	{ ENTRY("%fn"), ENTRY("%s"), NULL, (void*)message->FunctionName, NULL,
260	0	&recurse }, /* function */
261	0	{ ENTRY("%hr"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wHour, NULL,
262	0	&recurse }, /* hours */
263	0	{ ENTRY("%ln"), ENTRY("%" PRIuz), NULL, (void*)(size_t)message->LineNumber, NULL,
264	0	&recurse }, /* line number */
265	0	{ ENTRY("%lv"), ENTRY("%s"), NULL, (void*)WLOG_LEVELS[message->Level], NULL,
266	0	&recurse }, /* log level */
267	0	{ ENTRY("%mi"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wMinute, NULL,
268	0	&recurse }, /* minutes */
269	0	{ ENTRY("%ml"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wMilliseconds, NULL,
270	0	&recurse }, /* milliseconds */
271	0	{ ENTRY("%mn"), ENTRY("%s"), NULL, log->Name, NULL, &recurse }, /* module name */
272	0	{ ENTRY("%mo"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wMonth, NULL,
273	0	&recurse }, /* month */
274	0	{ ENTRY("%pid"), ENTRY("%u"), NULL, (void*)(size_t)GetCurrentProcessId(), NULL,
275	0	&recurse }, /* process id */
276	0	{ ENTRY("%se"), ENTRY("%02u"), NULL, (void*)(size_t)localTime.wSecond, NULL,
277	0	&recurse }, /* seconds */
278	0	{ ENTRY("%tid"), ENTRY("%s"), get_tid, tid, NULL, &recurse }, /* thread id */
279	0	{ ENTRY("%yr"), ENTRY("%u"), NULL, (void*)(size_t)localTime.wYear, NULL,
280	0	&recurse }, /* year */
281	0	{ ENTRY("%{"), ENTRY("%}"), NULL, log->context, skip_if_null,
282	0	&recurse }, /* skip if no context */
283	0	};
284
285	0	recurse.options = options;
286	0	recurse.nroptions = ARRAYSIZE(options);
287
288	0	if (!replace_format_string(layout->FormatString, &recurse, format, ARRAYSIZE(format)))
289	0	return FALSE;
290	0	WLog_PrintMessagePrefix(log, message, format);
291
292	0	return TRUE;
293	0	}
294
295		wLogLayout* WLog_GetLogLayout(wLog* log)
296	0	{
297	0	wLogAppender* appender;
298	0	appender = WLog_GetLogAppender(log);
299	0	return appender->Layout;
300	0	}
301
302		BOOL WLog_Layout_SetPrefixFormat(wLog* log, wLogLayout* layout, const char* format)
303	0	{
304	0	free(layout->FormatString);
305	0	layout->FormatString = NULL;
306
307	0	if (format)
308	0	{
309	0	layout->FormatString = _strdup(format);
310
311	0	if (!layout->FormatString)
312	0	return FALSE;
313	0	}
314
315	0	return TRUE;
316	0	}
317
318		wLogLayout* WLog_Layout_New(wLog* log)
319	0	{
320	0	LPCSTR prefix = "WLOG_PREFIX";
321	0	DWORD nSize;
322	0	char* env = NULL;
323	0	wLogLayout* layout;
324	0	layout = (wLogLayout*)calloc(1, sizeof(wLogLayout));
325
326	0	if (!layout)
327	0	return NULL;
328
329	0	nSize = GetEnvironmentVariableA(prefix, NULL, 0);
330
331	0	if (nSize)
332	0	{
333	0	env = (LPSTR)malloc(nSize);
334
335	0	if (!env)
336	0	{
337	0	free(layout);
338	0	return NULL;
339	0	}
340
341	0	if (GetEnvironmentVariableA(prefix, env, nSize) != nSize - 1)
342	0	{
343	0	free(env);
344	0	free(layout);
345	0	return NULL;
346	0	}
347	0	}
348
349	0	if (env)
350	0	layout->FormatString = env;
351	0	else
352	0	{
353		#ifdef ANDROID
354		layout->FormatString = _strdup("[pid=%pid:tid=%tid] - [%fn]%{[%ctx]%}: ");
355		#else
356	0	layout->FormatString =
357	0	_strdup("[%hr:%mi:%se:%ml] [%pid:%tid] [%lv][%mn] - [%fn]%{[%ctx]%}: ");
358	0	#endif
359
360	0	if (!layout->FormatString)
361	0	{
362	0	free(layout);
363	0	return NULL;
364	0	}
365	0	}
366
367	0	return layout;
368	0	}
369
370		void WLog_Layout_Free(wLog* log, wLogLayout* layout)
371	0	{
372	0	if (layout)
373	0	{
374	0	if (layout->FormatString)
375	0	{
376	0	free(layout->FormatString);
377	0	layout->FormatString = NULL;
378	0	}
379
380	0	free(layout);
381	0	}
382	0	}