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asctime_r: add param check to asctime_r()

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ligd
2022-07-27 15:42:28 +08:00
committed by Petro Karashchenko
parent a161800214
commit 367fa640c1
1 changed files with 15 additions and 0 deletions
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libs/libc/time/lib_asctimer.c
+15
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@@ -28,6 +28,14 @@
#include <nuttx/time.h>
/****************************************************************************
* Pre-processor definitions
****************************************************************************/
#ifndef ARRAY_SIZE
# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
/****************************************************************************
* Private Data
****************************************************************************/
@@ -73,6 +81,13 @@ FAR char *asctime_r(FAR const struct tm *tp, FAR char *buf)
{
char tmp[128];
if (tp == NULL ||
tp->tm_wday >= ARRAY_SIZE(g_wday_name) ||
tp->tm_mon >= ARRAY_SIZE(g_mon_name))
{
return NULL;
}
snprintf(tmp, sizeof(tmp), "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
g_wday_name[tp->tm_wday], g_mon_name[tp->tm_mon],
tp->tm_mday, tp->tm_hour, tp->tm_min, tp->tm_sec,