diff options
Diffstat (limited to 'libbb/time.c')
| -rw-r--r-- | libbb/time.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/libbb/time.c b/libbb/time.c index 365b1df02..41a69c754 100644 --- a/libbb/time.c +++ b/libbb/time.c @@ -8,7 +8,9 @@ */ #include "libbb.h" -void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) +/* Returns 0 if the time structure contains an absolute UTC time which + * should not be subject to DST adjustment by the caller. */ +int FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) { char end = '\0'; #if ENABLE_DESKTOP @@ -27,6 +29,10 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) "%b %d %T %Y" "\0" /* month_name d HH:MM:SS YYYY */ "%Y-%m-%d %R" "\0" /* yyyy-mm-dd HH:MM */ "%Y-%m-%d %T" "\0" /* yyyy-mm-dd HH:MM:SS */ +#if ENABLE_FEATURE_TIMEZONE + "%Y-%m-%d %R %z" "\0" /* yyyy-mm-dd HH:MM TZ */ + "%Y-%m-%d %T %z" "\0" /* yyyy-mm-dd HH:MM:SS TZ */ +#endif "%Y-%m-%d %H" "\0" /* yyyy-mm-dd HH */ "%Y-%m-%d" "\0" /* yyyy-mm-dd */ /* extra NUL */; @@ -38,8 +44,28 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) fmt = fmt_str; while (*fmt) { endp = strptime(date_str, fmt, ptm); - if (endp && *endp == '\0') - return; + if (endp && *endp == '\0') { +#if ENABLE_FEATURE_TIMEZONE + if (strchr(fmt, 'z')) { + time_t t; + struct tm *utm; + + /* we have timezone offset: obtain Unix time_t */ + ptm->tm_sec -= ptm->tm_gmtoff; + ptm->tm_isdst = 0; + t = timegm(ptm); + if (t == (time_t)-1) + break; + /* convert Unix time_t to struct tm in user's locale */ + utm = localtime(&t); + if (!utm) + break; + *ptm = *utm; + return 0; + } +#endif + return 1; + } *ptm = save; while (*++fmt) continue; @@ -124,7 +150,7 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) struct tm *lt = localtime(&t); if (lt) { *ptm = *lt; - return; + return 0; } } end = '1'; @@ -241,6 +267,7 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm) if (end != '\0') { bb_error_msg_and_die(bb_msg_invalid_date, date_str); } + return 1; } time_t FAST_FUNC validate_tm_time(const char *date_str, struct tm *ptm) |