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fix a crash with corrupted jpg files 

three was a double-free crash with a scrambled jpg file, thanks Grigoriy
This commit is contained in:
John Cupitt 2012-06-19 08:52:06 +01:00
parent b0edbc0aa9
commit 2f897315ad
2 changed files with 5 additions and 7 deletions
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3
ChangeLog
View File

@ -1,7 +1,8 @@
18/6/12 started 7.28.7
- add vips_flatten() -- flatten RGBA to RGB
- better alpha handling in PNG load
- don't save RGBA PNG as CMYK JPG
- don't save RGBA PNG as CMYK JPG (thanks Tobsn)
- fix a crash with malformed jpg files (thanks Grigoriy)
19/4/12 started 7.28.6
- better resolution unit handling in deprecated im_vips2tiff()

9
libvips/foreign/jpeg2vips.c
View File

@ -135,7 +135,6 @@ typedef struct _ReadJpeg {
/* Used for file input only.
*/
FILE *fp;
char *filename;
struct jpeg_decompress_struct cinfo;
@ -179,7 +178,7 @@ readjpeg_free( ReadJpeg *jpeg )
jpeg->decompressing = FALSE;
}
VIPS_FREEF( fclose, jpeg->fp );
VIPS_FREEF( fclose, jpeg->eman.fp );
VIPS_FREE( jpeg->filename );
jpeg->eman.fp = NULL;
jpeg_destroy_decompress( &jpeg->cinfo );
@ -203,7 +202,6 @@ readjpeg_new( VipsImage *out, int shrink, gboolean fail )
jpeg->out = out;
jpeg->shrink = shrink;
jpeg->fail = fail;
jpeg->fp = NULL;
jpeg->filename = NULL;
jpeg->decompressing = FALSE;
@ -225,10 +223,9 @@ static int
readjpeg_file( ReadJpeg *jpeg, const char *filename )
{
jpeg->filename = g_strdup( filename );
if( !(jpeg->fp = vips__file_open_read( filename, NULL, FALSE )) )
if( !(jpeg->eman.fp = vips__file_open_read( filename, NULL, FALSE )) )
return( -1 );
jpeg->eman.fp = jpeg->fp;
jpeg_stdio_src( &jpeg->cinfo, jpeg->fp );
jpeg_stdio_src( &jpeg->cinfo, jpeg->eman.fp );
return( 0 );
}