better buffer sizing in tiff reader
We were not setting JPEGCOLORMODE_RGB early enough, so buffers could be undersized in some circumstances. Thanks omira-sch.
This commit is contained in:
John Cupitt
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849d24472e
commit
1f100c0c42
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@ -1,3 +1,6 @@
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31/3/19 started 8.7.5
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- better buffer sizing in tiff reader [omira-sch]
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4/1/19 started 8.7.4
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- zero memory on allocate to prevent write of uninitialized memory under some
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error conditions [Balint Varga-Perke]
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@ -2,7 +2,7 @@
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# also update the version number in the m4 macros below
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AC_INIT([vips], [8.7.4], [vipsip@jiscmail.ac.uk])
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AC_INIT([vips], [8.7.5], [vipsip@jiscmail.ac.uk])
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# required for gobject-introspection
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AC_PREREQ(2.62)
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@ -18,7 +18,7 @@ AC_CONFIG_MACRO_DIR([m4])
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# user-visible library versioning
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m4_define([vips_major_version], [8])
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m4_define([vips_minor_version], [7])
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m4_define([vips_micro_version], [4])
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m4_define([vips_micro_version], [5])
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m4_define([vips_version],
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[vips_major_version.vips_minor_version.vips_micro_version])
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@ -38,7 +38,7 @@ VIPS_VERSION_STRING=$VIPS_VERSION-`date -u -r ChangeLog`
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# binary interface changes not backwards compatible?: reset age to 0
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LIBRARY_CURRENT=51
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LIBRARY_REVISION=5
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LIBRARY_REVISION=6
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LIBRARY_AGE=9
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# patched into include/vips/version.h
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@ -183,6 +183,8 @@
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* - check for non-byte-multiple bits_per_sample [HongxuChen]
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* 16/8/18
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* - shut down the input file as soon as we can [kleisauke]
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* 28/3/19 omira-sch
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* - better buffer sizing
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*/
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/*
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@ -264,6 +266,7 @@ typedef struct _RtiffHeader {
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*/
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uint32 rows_per_strip;
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tsize_t strip_size;
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tsize_t tile_size;
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int number_of_strips;
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gboolean read_scanlinewise;
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} RtiffHeader;
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@ -1291,14 +1294,6 @@ rtiff_pick_reader( Rtiff *rtiff )
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if( photometric_interpretation == PHOTOMETRIC_PALETTE )
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return( rtiff_parse_palette );
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if( photometric_interpretation == PHOTOMETRIC_YCBCR ) {
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/* Sometimes JPEG in TIFF images are tagged as YCBCR. Ask
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* libtiff to convert to RGB for us.
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*/
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TIFFSetField( rtiff->tiff,
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TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB );
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}
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return( rtiff_parse_copy );
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}
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@ -1311,6 +1306,10 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
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uint32 data_length;
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void *data;
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/* Request YCbCr expansion.
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*/
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TIFFSetField( rtiff->tiff, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB );
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out->Xsize = rtiff->header.width;
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out->Ysize = rtiff->header.height * rtiff->n;
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@ -1438,19 +1437,6 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
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return( 0 );
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}
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/* The size of the buffer written by TIFFReadTile(). We can't use
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* TIFFTileSize() since that ignores the setting of TIFFTAG_JPEGCOLORMODE. If
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* this pseudo tag has been set and the tile is encoded with YCbCr, the tile
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* is returned with chrominance upsampled.
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*
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* This seems not to happen for old-style jpeg-compressed tiles.
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*/
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static size_t
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rtiff_tile_size( Rtiff *rtiff )
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{
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return( TIFFTileRowSize( rtiff->tiff ) * rtiff->header.tile_height );
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}
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/* Allocate a tile buffer. Have one of these for each thread so we can unpack
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* to vips in parallel.
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*/
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@ -1458,11 +1444,9 @@ static void *
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rtiff_seq_start( VipsImage *out, void *a, void *b )
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{
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Rtiff *rtiff = (Rtiff *) a;
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tsize_t size;
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tdata_t *buf;
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size = rtiff_tile_size( rtiff );
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if( !(buf = vips_malloc( NULL, size )) )
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if( !(buf = vips_malloc( NULL, rtiff->header.tile_size )) )
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return( NULL );
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return( (void *) buf );
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@ -1531,7 +1515,7 @@ rtiff_fill_region( VipsRegion *out,
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/* Sizeof a line of bytes in the TIFF tile.
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*/
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int tls = rtiff_tile_size( rtiff ) / tile_height;
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int tls = rtiff->header.tile_size / tile_height;
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/* Sizeof a pel in the TIFF file. This won't work for formats which
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* are <1 byte per pel, like onebit :-( Fortunately, it's only used
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@ -1726,7 +1710,7 @@ rtiff_read_tilewise( Rtiff *rtiff, VipsImage *out )
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vips_tile_size = VIPS_IMAGE_SIZEOF_PEL( t[0] ) *
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tile_width * tile_height;
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if( rtiff_tile_size( rtiff ) != vips_tile_size ) {
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if( rtiff->header.tile_size != vips_tile_size ) {
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vips_error( "tiff2vips",
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"%s", _( "unsupported tiff image type" ) );
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return( -1 );
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@ -2039,7 +2023,6 @@ rtiff_read_stripwise( Rtiff *rtiff, VipsImage *out )
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if( !(rtiff->contig_buf =
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vips_malloc( VIPS_OBJECT( out ), size )) )
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return( -1 );
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}
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if(
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@ -2061,6 +2044,12 @@ rtiff_read_stripwise( Rtiff *rtiff, VipsImage *out )
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static int
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rtiff_header_read( Rtiff *rtiff, RtiffHeader *header )
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{
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/* We want to always expand subsampled YCBCR images to full RGB. We
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* need to set this pseudo tag early, since it affects the value you
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* get from TIFFStripSize() etc.
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*/
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TIFFSetField( rtiff->tiff, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB );
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if( !tfget32( rtiff->tiff, TIFFTAG_IMAGEWIDTH, &header->width ) ||
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!tfget32( rtiff->tiff, TIFFTAG_IMAGELENGTH, &header->height ) ||
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!tfget16( rtiff->tiff,
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@ -2074,11 +2063,11 @@ rtiff_header_read( Rtiff *rtiff, RtiffHeader *header )
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/* Arbitrary sanity-checking limits.
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*/
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if( header->width <= 0 ||
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header->width > VIPS_MAX_COORD ||
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header->height <= 0 ||
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if( header->width <= 0 ||
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header->width > VIPS_MAX_COORD ||
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header->height <= 0 ||
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header->height > VIPS_MAX_COORD ) {
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vips_error( "tiff2vips",
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vips_error( "tiff2vips",
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"%s", _( "width/height out of range" ) );
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return( -1 );
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}
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@ -2116,6 +2105,19 @@ rtiff_header_read( Rtiff *rtiff, RtiffHeader *header )
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TIFFTAG_TILELENGTH, &header->tile_height ) )
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return( -1 );
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/* Arbitrary sanity-checking limits.
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*/
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if( header->tile_width <= 0 ||
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header->tile_width > 10000 ||
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header->tile_height <= 0 ||
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header->tile_height > 10000 ) {
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vips_error( "tiff2vips",
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"%s", _( "tile size out of range" ) );
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return( -1 );
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}
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header->tile_size = TIFFTileSize( rtiff->tiff );
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/* Stop some compiler warnings.
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*/
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header->rows_per_strip = 0;
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@ -2162,6 +2164,7 @@ rtiff_header_read( Rtiff *rtiff, RtiffHeader *header )
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*/
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header->tile_width = 0;
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header->tile_height = 0;
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header->tile_size = 0;
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}
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return( 0 );
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