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Specify date string length in FINSH date command. 

libc ctime returns a fixed 25 character string without a NULL terminator. Print it without specifying length in FINSH date command prints extra contents and could potentially be dangerous.
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zhiweih 2020-07-27 23:09:26 +08:00 committed by GitHub
parent fa599be08c
commit 814b646d17
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1 changed files with 2 additions and 2 deletions
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components/drivers/rtc/rtc.c
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@ -179,7 +179,7 @@ void list_date(void)
time_t now; time_t now;
now = time(RT_NULL); now = time(RT_NULL);
rt_kprintf("%s\n", ctime(&now)); rt_kprintf("%.*s\n", 25, ctime(&now));
} }
FINSH_FUNCTION_EXPORT(list_date, show date and time.) FINSH_FUNCTION_EXPORT(list_date, show date and time.)
@ -194,7 +194,7 @@ static void date(uint8_t argc, char **argv)
time_t now; time_t now;
/* output current time */ /* output current time */
now = time(RT_NULL); now = time(RT_NULL);
rt_kprintf("%s", ctime(&now)); rt_kprintf("%.*s", 25, ctime(&now));
} }
else if (argc >= 7) else if (argc >= 7)
{ {