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-rw-r--r--date.c34
1 files changed, 23 insertions, 11 deletions
diff --git a/date.c b/date.c
index 896fbb4806..353e0a5e53 100644
--- a/date.c
+++ b/date.c
@@ -552,23 +552,35 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
static int match_tz(const char *date, int *offp)
{
char *end;
- int offset = strtoul(date+1, &end, 10);
- int min, hour;
- int n = end - date - 1;
+ int hour = strtoul(date + 1, &end, 10);
+ int n = end - (date + 1);
+ int min = 0;
- min = offset % 100;
- hour = offset / 100;
+ if (n == 4) {
+ /* hhmm */
+ min = hour % 100;
+ hour = hour / 100;
+ } else if (n != 2) {
+ min = 99; /* random crap */
+ } else if (*end == ':') {
+ /* hh:mm? */
+ min = strtoul(end + 1, &end, 10);
+ if (end - (date + 1) != 5)
+ min = 99; /* random crap */
+ } /* otherwise we parsed "hh" */
/*
- * Don't accept any random crap.. At least 3 digits, and
- * a valid minute. We might want to check that the minutes
- * are divisible by 30 or something too.
+ * Don't accept any random crap. Even though some places have
+ * offset larger than 12 hours (e.g. Pacific/Kiritimati is at
+ * UTC+14), there is something wrong if hour part is much
+ * larger than that. We might also want to check that the
+ * minutes are divisible by 15 or something too. (Offset of
+ * Kathmandu, Nepal is UTC+5:45)
*/
- if (min < 60 && n > 2) {
- offset = hour*60+min;
+ if (min < 60 && hour < 24) {
+ int offset = hour * 60 + min;
if (*date == '-')
offset = -offset;
-
*offp = offset;
}
return end - date;