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detect bad profiles during profile load

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and add some extra dbg to print profile properties

see https://github.com/libvips/libvips/issues/1956
This commit is contained in:
John Cupitt 2021-01-08 14:19:32 +00:00
parent ed6e048443
commit 03dac2a2df
1 changed files with 110 additions and 39 deletions
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149
libvips/colour/icc_transform.c
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@ -71,6 +71,10 @@
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
@ -81,7 +85,6 @@
#include <stdio.h>
#include <math.h>
#include <assert.h>
/* Has to be before VIPS to avoid nameclashes.
*/
@ -417,20 +420,6 @@ typedef VipsIccClass VipsIccImportClass;
G_DEFINE_TYPE( VipsIccImport, vips_icc_import, VIPS_TYPE_ICC );
static void
vips_check_intent( const char *domain,
cmsHPROFILE profile, VipsIntent intent, int direction )
{
if( profile &&
!cmsIsIntentSupported( profile, intent, direction ) )
g_warning( _( "%s: intent %d (%s) not supported by "
"%s profile; falling back to default intent" ),
domain,
intent, vips_enum_nick( VIPS_TYPE_INTENT, intent ),
direction == LCMS_USED_AS_INPUT ?
_( "input" ) : _( "output" ) );
}
static int
vips_icc_profile_needs_bands( cmsHPROFILE profile )
{
@ -607,10 +596,76 @@ vips_icc_get_profile_image( VipsImage *image )
return( vips_blob_new( NULL, data, size ) );
}
/* Load a profile from a blob and check compatibility.
#ifdef DEBUG
static void
vips_icc_print_profile( const char *name, cmsHPROFILE profile )
{
static const cmsInfoType info_types[] = {
cmsInfoDescription,
cmsInfoManufacturer,
cmsInfoModel,
cmsInfoCopyright
};
static const char *info_names[] = {
"description",
"manufacturer",
"model",
"copyright"
};
int i;
cmsUInt32Number n_bytes;
cmsUInt32Number n_intents;
cmsUInt32Number *intent_codes;
char **intent_descriptions;
printf( "icc profile %s: %p\n", name, profile );
for( i = 0; i < VIPS_NUMBER( info_types ); i++ ) {
if( (n_bytes = cmsGetProfileInfoASCII( profile,
info_types[i], "en", "US",
NULL, 0 )) ) {
char *buffer;
buffer = VIPS_ARRAY( NULL, n_bytes, char );
(void) cmsGetProfileInfoASCII( profile,
info_types[i], "en", "US",
buffer, n_bytes );
printf( "%s: %s\n", info_names[i], buffer );
g_free( buffer );
}
}
printf( "profile class: %#x\n", cmsGetDeviceClass( profile ) );
printf( "PCS: %#x\n", cmsGetPCS( profile ) );
printf( "matrix shaper: %d\n", cmsIsMatrixShaper( profile ) );
printf( "version: %g\n", cmsGetProfileVersion( profile ) );
n_intents = cmsGetSupportedIntents( 0, NULL, NULL );
printf( "n_intents = %u\n", n_intents );
intent_codes = VIPS_ARRAY( NULL, n_intents, cmsUInt32Number );
intent_descriptions = VIPS_ARRAY( NULL, n_intents, char * );
(void) cmsGetSupportedIntents( n_intents,
intent_codes, intent_descriptions );
for( i = 0; i < n_intents; i++ ) {
printf( " %#x: %s, in CLUT = %d, out CLUT = %d\n",
intent_codes[i], intent_descriptions[i],
cmsIsCLUT( profile,
intent_codes[i], LCMS_USED_AS_INPUT ),
cmsIsCLUT( profile,
intent_codes[i], LCMS_USED_AS_OUTPUT ) );
}
g_free( intent_codes );
g_free( intent_descriptions );
}
#endif /*DEBUG*/
/* Load a profile from a blob and check compatibility with image, intent and
* direction.
*/
static cmsHPROFILE
vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
vips_icc_load_profile_blob( VipsBlob *blob,
VipsImage *image, VipsIntent intent, int direction )
{
const void *data;
size_t size;
@ -622,6 +677,10 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
return( NULL );
}
#ifdef DEBUG
vips_icc_print_profile( "from blob", profile );
#endif /*DEBUG*/
if( image &&
vips_image_expected_bands( image ) !=
vips_icc_profile_needs_bands( profile ) ) {
@ -629,6 +688,7 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
g_warning( "%s", _( "profile incompatible with image" ) );
return( NULL );
}
if( image &&
vips_image_expected_sig( image ) !=
cmsGetColorSpace( profile ) ) {
@ -638,6 +698,15 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
return( NULL );
}
if( !cmsIsIntentSupported( profile, intent, direction ) ) {
VIPS_FREEF( cmsCloseProfile, profile );
g_warning( _( "%s profile does not support %s intent" ),
direction == LCMS_USED_AS_INPUT ?
_( "input" ) : _( "output" ),
vips_enum_nick( VIPS_TYPE_INTENT, intent ) );
return( NULL );
}
return( profile );
}
@ -646,12 +715,14 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
* unref the blob if it's useless.
*/
static cmsHPROFILE
vips_icc_verify_blob( VipsBlob **blob, VipsImage *image )
vips_icc_verify_blob( VipsBlob **blob,
VipsImage *image, VipsIntent intent, int direction )
{
if( *blob ) {
cmsHPROFILE profile;
if( !(profile = vips_icc_load_profile_blob( *blob, image )) ) {
if( !(profile = vips_icc_load_profile_blob( *blob,
image, intent, direction )) ) {
vips_area_unref( (VipsArea *) *blob );
*blob = NULL;
}
@ -689,7 +760,8 @@ vips_icc_import_build( VipsObject *object )
!import->input_profile_filename) ) {
icc->in_blob = vips_icc_get_profile_image( code->in );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT );
}
if( code->in &&
@ -699,7 +771,8 @@ vips_icc_import_build( VipsObject *object )
&icc->in_blob, NULL ) )
return( -1 );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT );
used_fallback = TRUE;
}
@ -708,9 +781,6 @@ vips_icc_import_build( VipsObject *object )
return( -1 );
}
vips_check_intent( class->nickname,
icc->in_profile, icc->intent, LCMS_USED_AS_INPUT );
if( icc->pcs == VIPS_PCS_LAB ) {
cmsCIExyY white;
cmsWhitePointFromTemp( &white, 6500 );
@ -896,16 +966,12 @@ vips_icc_export_build( VipsObject *object )
}
if( icc->out_blob &&
!(icc->out_profile =
vips_icc_load_profile_blob( icc->out_blob, NULL )) ) {
!(icc->out_profile = vips_icc_load_profile_blob( icc->out_blob,
NULL, icc->intent, LCMS_USED_AS_OUTPUT )) ) {
vips_error( class->nickname, "%s", _( "no output profile" ) );
return( -1 );
}
if( icc->out_profile )
vips_check_intent( class->nickname,
icc->out_profile, icc->intent, LCMS_USED_AS_OUTPUT );
if( VIPS_OBJECT_CLASS( vips_icc_export_parent_class )->build( object ) )
return( -1 );
@ -1093,7 +1159,8 @@ vips_icc_transform_build( VipsObject *object )
!transform->input_profile_filename) ) {
icc->in_blob = vips_icc_get_profile_image( code->in );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT );
}
if( code->in &&
@ -1103,7 +1170,8 @@ vips_icc_transform_build( VipsObject *object )
&icc->in_blob, NULL ) )
return( -1 );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT );
}
if( !icc->in_profile ) {
@ -1124,19 +1192,14 @@ vips_icc_transform_build( VipsObject *object )
}
if( icc->out_blob )
icc->out_profile =
vips_icc_load_profile_blob( icc->out_blob, NULL );
icc->out_profile = vips_icc_load_profile_blob( icc->out_blob,
NULL, icc->intent, LCMS_USED_AS_OUTPUT );
if( !icc->out_profile ) {
vips_error( class->nickname, "%s", _( "no output profile" ) );
return( -1 );
}
vips_check_intent( class->nickname,
icc->in_profile, icc->intent, LCMS_USED_AS_INPUT );
vips_check_intent( class->nickname,
icc->out_profile, icc->intent, LCMS_USED_AS_OUTPUT );
if( VIPS_OBJECT_CLASS( vips_icc_transform_parent_class )->
build( object ) )
return( -1 );
@ -1234,6 +1297,10 @@ vips_icc_ac2rc( VipsImage *in, VipsImage **out, const char *profile_filename )
if( !(profile = cmsOpenProfileFromFile( profile_filename, "r" )) )
return( -1 );
#ifdef DEBUG
vips_icc_print_profile( profile_filename, profile );
#endif /*DEBUG*/
if( !(media = cmsReadTag( profile, cmsSigMediaWhitePointTag )) ) {
vips_error( "vips_icc_ac2rc",
"%s", _( "unable to get media white point" ) );
@ -1293,6 +1360,10 @@ vips_icc_is_compatible_profile( VipsImage *image,
*/
return( FALSE );
#ifdef DEBUG
vips_icc_print_profile( "from memory", profile );
#endif /*DEBUG*/
if( vips_image_expected_bands( image ) !=
vips_icc_profile_needs_bands( profile ) ) {
VIPS_FREEF( cmsCloseProfile, profile );