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qt-faststart: Abort scanning of the input file if a badly sized atom is encountered

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If the atom size is 0, qt-faststart currently hangs forever while scanning
the file.

Originally committed as revision 23129 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö 2010-05-13 19:22:56 +00:00
parent 6d81016282
commit 86e09922a5
1 changed files with 6 additions and 0 deletions
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6
tools/qt-faststart.c
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@ -163,6 +163,12 @@ int main(int argc, char *argv[])
break; break;
} }
atom_offset += atom_size; atom_offset += atom_size;
/* The atom header is 8 (or 16 bytes), if the atom size (which
* includes these 8 or 16 bytes) is less than that, we won't be
* able to continue scanning sensibly after this atom, so break. */
if (atom_size < 8)
break;
} }
if (atom_type != MOOV_ATOM) { if (atom_type != MOOV_ATOM) {