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don't load 0 length profiles 

some tiffs have 0 length icc profiles ... test profile length before we
try to load it

see https://github.com/jcupitt/libvips/issues/605
This commit is contained in:
John Cupitt 2017-02-20 22:36:35 +00:00
parent 3f92cfc935
commit 197a21ed0e
1 changed files with 13 additions and 5 deletions
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18
libvips/foreign/tiff2vips.c
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@ -203,8 +203,8 @@
*/
/*
#define DEBUG
*/
#define DEBUG
#ifdef HAVE_CONFIG_H
#include <config.h>
@ -1253,7 +1253,9 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
/* Read any ICC profile.
*/
if( TIFFGetField( rtiff->tiff,
TIFFTAG_ICCPROFILE, &data_length, &data ) ) {
TIFFTAG_ICCPROFILE, &data_length, &data ) &&
data &&
data_length ) {
void *data_copy;
if( !(data_copy = vips_malloc( NULL, data_length )) )
@ -1266,7 +1268,9 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
/* Read any XMP metadata.
*/
if( TIFFGetField( rtiff->tiff,
TIFFTAG_XMLPACKET, &data_length, &data ) ) {
TIFFTAG_XMLPACKET, &data_length, &data ) &&
data &&
data_length ) {
void *data_copy;
if( !(data_copy = vips_malloc( NULL, data_length )) )
@ -1279,7 +1283,9 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
/* Read any IPCT metadata.
*/
if( TIFFGetField( rtiff->tiff,
TIFFTAG_RICHTIFFIPTC, &data_length, &data ) ) {
TIFFTAG_RICHTIFFIPTC, &data_length, &data ) &&
data &&
data_length ) {
void *data_copy;
/* For no very good reason, libtiff stores IPCT as an array of
@ -1297,7 +1303,9 @@ rtiff_set_header( Rtiff *rtiff, VipsImage *out )
/* Read any photoshop metadata.
*/
if( TIFFGetField( rtiff->tiff,
TIFFTAG_PHOTOSHOP, &data_length, &data ) ) {
TIFFTAG_PHOTOSHOP, &data_length, &data ) &&
data &&
data_length ) {
void *data_copy;
if( !(data_copy = vips_malloc( NULL, data_length )) )