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mpegts: Check hour:minute:second values before creating datetime

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Avoids assertions when the packets are malformed and also add the case
where the time isn't specified, only the date.
This commit is contained in:
Thiago Santos 2014-05-19 13:43:59 -03:00
parent 8070b4e043
commit 0cdcc5a7b1
1 changed files with 10 additions and 3 deletions
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9
gst-libs/gst/mpegts/gst-dvb-section.c
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@ -82,7 +82,7 @@ _parse_utc_time (guint8 * data)
utc_ptr = data + 2;
/* First digit of hours cannot exceeed 2 (max: 23 hours) */
/* First digit of hours cannot exceed 1 (max: 23 hours) */
hour = ((utc_ptr[0] & 0x30) >> 4) * 10 + (utc_ptr[0] & 0x0F);
/* First digit of minutes cannot exced 5 (max: 59 mins) */
minute = ((utc_ptr[1] & 0x70) >> 4) * 10 + (utc_ptr[1] & 0x0F);
@ -90,8 +90,15 @@ _parse_utc_time (guint8 * data)
second = ((utc_ptr[2] & 0x70) >> 4) * 10 + (utc_ptr[2] & 0x0F);
/* Time is UTC */
if (hour >= 0 && hour < 24 && minute >= 0 && minute < 60 && second >= 0
&& second < 60) {
return gst_date_time_new (0.0, year, month, day, hour, minute,
(gdouble) second);
} else if (utc_ptr[0] == 0xFF && utc_ptr[1] == 0xFF && utc_ptr[2] == 0xFF) {
return gst_date_time_new (0.0, year, month, day, -1, -1, -1);
}
return NULL;
}
/* Event Information Table */