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avformat/dss: Check sscanf() return value in dss_read_metadata_date()

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Fixes writing uninitialized values into metadata without error in case
parsing fails

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-19 22:10:47 +01:00
parent 29d2197d88
commit b2bbe8298b
1 changed files with 2 additions and 1 deletions
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3
libavformat/dss.c
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@ -78,7 +78,8 @@ static int dss_read_metadata_date(AVFormatContext *s, unsigned int offset,
if (ret < DSS_TIME_SIZE)
return ret < 0 ? ret : AVERROR_EOF;
sscanf(string, "%2d%2d%2d%2d%2d%2d", &y, &month, &d, &h, &minute, &sec);
if (sscanf(string, "%2d%2d%2d%2d%2d%2d", &y, &month, &d, &h, &minute, &sec) != 6)
return AVERROR_INVALIDDATA;
/* We deal with a two-digit year here, so set the default date to 2000
* and hope it will never be used in the next century. */
snprintf(datetime, sizeof(datetime), "%.4d-%.2d-%.2dT%.2d:%.2d:%.2d",