summaryrefslogtreecommitdiff
path: root/src/freetype2/otvalid
diff options
context:
space:
mode:
authorscuri <scuri>2008-10-17 06:10:33 +0000
committerscuri <scuri>2008-10-17 06:10:33 +0000
commit7b52cc13af4e85f1ca2deb6b6c77de9c95ea0dcf (patch)
treed0857278bde2eff784227c57dcaf930346ceb7ac /src/freetype2/otvalid
First commit - moving from LuaForge to SourceForge
Diffstat (limited to 'src/freetype2/otvalid')
-rw-r--r--src/freetype2/otvalid/otvalid.c30
-rw-r--r--src/freetype2/otvalid/otvalid.h72
-rw-r--r--src/freetype2/otvalid/otvbase.c318
-rw-r--r--src/freetype2/otvalid/otvcommn.c1055
-rw-r--r--src/freetype2/otvalid/otvcommn.h436
-rw-r--r--src/freetype2/otvalid/otverror.h43
-rw-r--r--src/freetype2/otvalid/otvgdef.c219
-rw-r--r--src/freetype2/otvalid/otvgpos.c1013
-rw-r--r--src/freetype2/otvalid/otvgpos.h36
-rw-r--r--src/freetype2/otvalid/otvgsub.c584
-rw-r--r--src/freetype2/otvalid/otvjstf.c258
-rw-r--r--src/freetype2/otvalid/otvmod.c242
-rw-r--r--src/freetype2/otvalid/otvmod.h39
13 files changed, 4345 insertions, 0 deletions
diff --git a/src/freetype2/otvalid/otvalid.c b/src/freetype2/otvalid/otvalid.c
new file mode 100644
index 0000000..2f85f60
--- /dev/null
+++ b/src/freetype2/otvalid/otvalid.c
@@ -0,0 +1,30 @@
+/***************************************************************************/
+/* */
+/* otvalid.c */
+/* */
+/* FreeType validator for OpenType tables (body only). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+#define FT_MAKE_OPTION_SINGLE_OBJECT
+
+#include <ft2build.h>
+
+#include "otvbase.c"
+#include "otvcommn.c"
+#include "otvgdef.c"
+#include "otvgpos.c"
+#include "otvgsub.c"
+#include "otvjstf.c"
+#include "otvmod.c"
+
+/* END */
diff --git a/src/freetype2/otvalid/otvalid.h b/src/freetype2/otvalid/otvalid.h
new file mode 100644
index 0000000..38f030f
--- /dev/null
+++ b/src/freetype2/otvalid/otvalid.h
@@ -0,0 +1,72 @@
+/***************************************************************************/
+/* */
+/* otvalid.h */
+/* */
+/* OpenType table validation (specification only). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __OTVALID_H__
+#define __OTVALID_H__
+
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+#include "otverror.h" /* must come before FT_INTERNAL_VALIDATE_H */
+
+#include FT_INTERNAL_VALIDATE_H
+#include FT_INTERNAL_STREAM_H
+
+
+FT_BEGIN_HEADER
+
+
+ FT_LOCAL( void )
+ otv_BASE_validate( FT_Bytes table,
+ FT_Validator valid );
+
+ /* GSUB and GPOS tables should already be validated; */
+ /* if missing, set corresponding argument to 0 */
+ FT_LOCAL( void )
+ otv_GDEF_validate( FT_Bytes table,
+ FT_Bytes gsub,
+ FT_Bytes gpos,
+ FT_Validator valid );
+
+ FT_LOCAL( void )
+ otv_GPOS_validate( FT_Bytes table,
+ FT_UInt glyph_count,
+ FT_Validator valid );
+
+ FT_LOCAL( void )
+ otv_GSUB_validate( FT_Bytes table,
+ FT_UInt glyph_count,
+ FT_Validator valid );
+
+ /* GSUB and GPOS tables should already be validated; */
+ /* if missing, set corresponding argument to 0 */
+ FT_LOCAL( void )
+ otv_JSTF_validate( FT_Bytes table,
+ FT_Bytes gsub,
+ FT_Bytes gpos,
+ FT_UInt glyph_count,
+ FT_Validator valid );
+
+
+FT_END_HEADER
+
+#endif /* __OTVALID_H__ */
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvbase.c b/src/freetype2/otvalid/otvbase.c
new file mode 100644
index 0000000..8ad2238
--- /dev/null
+++ b/src/freetype2/otvalid/otvbase.c
@@ -0,0 +1,318 @@
+/***************************************************************************/
+/* */
+/* otvbase.c */
+/* */
+/* OpenType BASE table validation (body). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvbase
+
+
+ static void
+ otv_BaseCoord_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BaseCoordFormat;
+
+
+ OTV_NAME_ENTER( "BaseCoord" );
+
+ OTV_LIMIT_CHECK( 4 );
+ BaseCoordFormat = FT_NEXT_USHORT( p );
+ p += 2; /* skip Coordinate */
+
+ OTV_TRACE(( " (format %d)\n", BaseCoordFormat ));
+
+ switch ( BaseCoordFormat )
+ {
+ case 1: /* BaseCoordFormat1 */
+ break;
+
+ case 2: /* BaseCoordFormat2 */
+ OTV_LIMIT_CHECK( 4 ); /* ReferenceGlyph, BaseCoordPoint */
+ break;
+
+ case 3: /* BaseCoordFormat3 */
+ OTV_LIMIT_CHECK( 2 );
+ /* DeviceTable */
+ otv_Device_validate( table + FT_NEXT_USHORT( p ), valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_BaseTagList_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BaseTagCount;
+
+
+ OTV_NAME_ENTER( "BaseTagList" );
+
+ OTV_LIMIT_CHECK( 2 );
+
+ BaseTagCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BaseTagCount = %d)\n", BaseTagCount ));
+
+ OTV_LIMIT_CHECK( BaseTagCount * 4 ); /* BaselineTag */
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_BaseValues_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BaseCoordCount;
+
+
+ OTV_NAME_ENTER( "BaseValues" );
+
+ OTV_LIMIT_CHECK( 4 );
+
+ p += 2; /* skip DefaultIndex */
+ BaseCoordCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BaseCoordCount = %d)\n", BaseCoordCount ));
+
+ OTV_LIMIT_CHECK( BaseCoordCount * 2 );
+
+ /* BaseCoord */
+ for ( ; BaseCoordCount > 0; BaseCoordCount-- )
+ otv_BaseCoord_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_MinMax_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt table_size;
+ FT_UInt FeatMinMaxCount;
+
+ OTV_OPTIONAL_TABLE( MinCoord );
+ OTV_OPTIONAL_TABLE( MaxCoord );
+
+
+ OTV_NAME_ENTER( "MinMax" );
+
+ OTV_LIMIT_CHECK( 6 );
+
+ OTV_OPTIONAL_OFFSET( MinCoord );
+ OTV_OPTIONAL_OFFSET( MaxCoord );
+ FeatMinMaxCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (FeatMinMaxCount = %d)\n", FeatMinMaxCount ));
+
+ table_size = FeatMinMaxCount * 8 + 6;
+
+ OTV_SIZE_CHECK( MinCoord );
+ if ( MinCoord )
+ otv_BaseCoord_validate( table + MinCoord, valid );
+
+ OTV_SIZE_CHECK( MaxCoord );
+ if ( MaxCoord )
+ otv_BaseCoord_validate( table + MaxCoord, valid );
+
+ OTV_LIMIT_CHECK( FeatMinMaxCount * 8 );
+
+ /* FeatMinMaxRecord */
+ for ( ; FeatMinMaxCount > 0; FeatMinMaxCount-- )
+ {
+ p += 4; /* skip FeatureTableTag */
+
+ OTV_OPTIONAL_OFFSET( MinCoord );
+ OTV_OPTIONAL_OFFSET( MaxCoord );
+
+ OTV_SIZE_CHECK( MinCoord );
+ if ( MinCoord )
+ otv_BaseCoord_validate( table + MinCoord, valid );
+
+ OTV_SIZE_CHECK( MaxCoord );
+ if ( MaxCoord )
+ otv_BaseCoord_validate( table + MaxCoord, valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_BaseScript_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt table_size;
+ FT_UInt BaseLangSysCount;
+
+ OTV_OPTIONAL_TABLE( BaseValues );
+ OTV_OPTIONAL_TABLE( DefaultMinMax );
+
+
+ OTV_NAME_ENTER( "BaseScript" );
+
+ OTV_LIMIT_CHECK( 6 );
+ OTV_OPTIONAL_OFFSET( BaseValues );
+ OTV_OPTIONAL_OFFSET( DefaultMinMax );
+ BaseLangSysCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BaseLangSysCount = %d)\n", BaseLangSysCount ));
+
+ table_size = BaseLangSysCount * 6 + 6;
+
+ OTV_SIZE_CHECK( BaseValues );
+ if ( BaseValues )
+ otv_BaseValues_validate( table + BaseValues, valid );
+
+ OTV_SIZE_CHECK( DefaultMinMax );
+ if ( DefaultMinMax )
+ otv_MinMax_validate( table + DefaultMinMax, valid );
+
+ OTV_LIMIT_CHECK( BaseLangSysCount * 6 );
+
+ /* BaseLangSysRecord */
+ for ( ; BaseLangSysCount > 0; BaseLangSysCount-- )
+ {
+ p += 4; /* skip BaseLangSysTag */
+
+ otv_MinMax_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_BaseScriptList_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BaseScriptCount;
+
+
+ OTV_NAME_ENTER( "BaseScriptList" );
+
+ OTV_LIMIT_CHECK( 2 );
+ BaseScriptCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BaseScriptCount = %d)\n", BaseScriptCount ));
+
+ OTV_LIMIT_CHECK( BaseScriptCount * 6 );
+
+ /* BaseScriptRecord */
+ for ( ; BaseScriptCount > 0; BaseScriptCount-- )
+ {
+ p += 4; /* skip BaseScriptTag */
+
+ /* BaseScript */
+ otv_BaseScript_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_Axis_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt table_size;
+
+ OTV_OPTIONAL_TABLE( BaseTagList );
+
+
+ OTV_NAME_ENTER( "Axis" );
+
+ OTV_LIMIT_CHECK( 4 );
+ OTV_OPTIONAL_OFFSET( BaseTagList );
+
+ table_size = 4;
+
+ OTV_SIZE_CHECK( BaseTagList );
+ if ( BaseTagList )
+ otv_BaseTagList_validate( table + BaseTagList, valid );
+
+ /* BaseScriptList */
+ otv_BaseScriptList_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ OTV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ otv_BASE_validate( FT_Bytes table,
+ FT_Validator ftvalid )
+ {
+ OTV_ValidatorRec validrec;
+ OTV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_UInt table_size;
+
+ OTV_OPTIONAL_TABLE( HorizAxis );
+ OTV_OPTIONAL_TABLE( VertAxis );
+
+
+ valid->root = ftvalid;
+
+ FT_TRACE3(( "validating BASE table\n" ));
+ OTV_INIT;
+
+ OTV_LIMIT_CHECK( 6 );
+
+ if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
+ FT_INVALID_DATA;
+
+ table_size = 6;
+
+ OTV_OPTIONAL_OFFSET( HorizAxis );
+ OTV_SIZE_CHECK( HorizAxis );
+ if ( HorizAxis )
+ otv_Axis_validate( table + HorizAxis, valid );
+
+ OTV_OPTIONAL_OFFSET( VertAxis );
+ OTV_SIZE_CHECK( VertAxis );
+ if ( VertAxis )
+ otv_Axis_validate( table + VertAxis, valid );
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvcommn.c b/src/freetype2/otvalid/otvcommn.c
new file mode 100644
index 0000000..d94e4f3
--- /dev/null
+++ b/src/freetype2/otvalid/otvcommn.c
@@ -0,0 +1,1055 @@
+/***************************************************************************/
+/* */
+/* otvcommn.c */
+/* */
+/* OpenType common tables validation (body). */
+/* */
+/* Copyright 2004, 2005, 2006 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvcommn.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvcommon
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** COVERAGE TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ otv_Coverage_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt CoverageFormat;
+
+
+ OTV_NAME_ENTER( "Coverage" );
+
+ OTV_LIMIT_CHECK( 4 );
+ CoverageFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", CoverageFormat ));
+
+ switch ( CoverageFormat )
+ {
+ case 1: /* CoverageFormat1 */
+ {
+ FT_UInt GlyphCount;
+
+
+ GlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 ); /* GlyphArray */
+ }
+ break;
+
+ case 2: /* CoverageFormat2 */
+ {
+ FT_UInt n, RangeCount;
+ FT_UInt Start, End, StartCoverageIndex, total = 0, last = 0;
+
+
+ RangeCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (RangeCount = %d)\n", RangeCount ));
+
+ OTV_LIMIT_CHECK( RangeCount * 6 );
+
+ /* RangeRecord */
+ for ( n = 0; n < RangeCount; n++ )
+ {
+ Start = FT_NEXT_USHORT( p );
+ End = FT_NEXT_USHORT( p );
+ StartCoverageIndex = FT_NEXT_USHORT( p );
+
+ if ( Start > End || StartCoverageIndex != total )
+ FT_INVALID_DATA;
+
+ if ( n > 0 && Start <= last )
+ FT_INVALID_DATA;
+
+ total += End - Start + 1;
+ last = End;
+ }
+ }
+ break;
+
+ default:
+ FT_INVALID_FORMAT;
+ }
+
+ /* no need to check glyph indices used as input to coverage tables */
+ /* since even invalid glyph indices return a meaningful result */
+
+ OTV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ otv_Coverage_get_first( FT_Bytes table )
+ {
+ FT_Bytes p = table;
+
+
+ p += 4; /* skip CoverageFormat and Glyph/RangeCount */
+
+ return FT_NEXT_USHORT( p );
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ otv_Coverage_get_last( FT_Bytes table )
+ {
+ FT_Bytes p = table;
+ FT_UInt CoverageFormat = FT_NEXT_USHORT( p );
+ FT_UInt count = FT_NEXT_USHORT( p ); /* Glyph/RangeCount */
+ FT_UInt result = 0;
+
+
+ switch ( CoverageFormat )
+ {
+ case 1:
+ p += ( count - 1 ) * 2;
+ result = FT_NEXT_USHORT( p );
+ break;
+
+ case 2:
+ p += ( count - 1 ) * 6 + 2;
+ result = FT_NEXT_USHORT( p );
+ break;
+
+ default:
+ ;
+ }
+
+ return result;
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ otv_Coverage_get_count( FT_Bytes table )
+ {
+ FT_Bytes p = table;
+ FT_UInt CoverageFormat = FT_NEXT_USHORT( p );
+ FT_UInt count = FT_NEXT_USHORT( p ); /* Glyph/RangeCount */
+ FT_UInt result = 0;
+
+
+ switch ( CoverageFormat )
+ {
+ case 1:
+ return count;
+
+ case 2:
+ {
+ FT_UInt Start, End;
+
+
+ for ( ; count > 0; count-- )
+ {
+ Start = FT_NEXT_USHORT( p );
+ End = FT_NEXT_USHORT( p );
+ p += 2; /* skip StartCoverageIndex */
+
+ result += End - Start + 1;
+ }
+ }
+ break;
+
+ default:
+ ;
+ }
+
+ return result;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** CLASS DEFINITION TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ otv_ClassDef_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt ClassFormat;
+
+
+ OTV_NAME_ENTER( "ClassDef" );
+
+ OTV_LIMIT_CHECK( 4 );
+ ClassFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", ClassFormat ));
+
+ switch ( ClassFormat )
+ {
+ case 1: /* ClassDefFormat1 */
+ {
+ FT_UInt GlyphCount;
+
+
+ p += 2; /* skip StartGlyph */
+
+ OTV_LIMIT_CHECK( 2 );
+
+ GlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 ); /* ClassValueArray */
+ }
+ break;
+
+ case 2: /* ClassDefFormat2 */
+ {
+ FT_UInt n, ClassRangeCount;
+ FT_UInt Start, End, last = 0;
+
+
+ ClassRangeCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ClassRangeCount = %d)\n", ClassRangeCount ));
+
+ OTV_LIMIT_CHECK( ClassRangeCount * 6 );
+
+ /* ClassRangeRecord */
+ for ( n = 0; n < ClassRangeCount; n++ )
+ {
+ Start = FT_NEXT_USHORT( p );
+ End = FT_NEXT_USHORT( p );
+ p += 2; /* skip Class */
+
+ if ( Start > End || ( n > 0 && Start <= last ) )
+ FT_INVALID_DATA;
+
+ last = End;
+ }
+ }
+ break;
+
+ default:
+ FT_INVALID_FORMAT;
+ }
+
+ /* no need to check glyph indices used as input to class definition */
+ /* tables since even invalid glyph indices return a meaningful result */
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** DEVICE TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ otv_Device_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt StartSize, EndSize, DeltaFormat, count;
+
+
+ OTV_NAME_ENTER( "Device" );
+
+ OTV_LIMIT_CHECK( 8 );
+ StartSize = FT_NEXT_USHORT( p );
+ EndSize = FT_NEXT_USHORT( p );
+ DeltaFormat = FT_NEXT_USHORT( p );
+
+ if ( DeltaFormat < 1 || DeltaFormat > 3 || EndSize < StartSize )
+ FT_INVALID_DATA;
+
+ count = EndSize - StartSize + 1;
+ OTV_LIMIT_CHECK( ( 1 << DeltaFormat ) * count / 8 ); /* DeltaValue */
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** LOOKUPS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->type_count */
+ /* uses valid->type_funcs */
+
+ FT_LOCAL_DEF( void )
+ otv_Lookup_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt LookupType, SubTableCount;
+ OTV_Validate_Func validate;
+
+
+ OTV_NAME_ENTER( "Lookup" );
+
+ OTV_LIMIT_CHECK( 6 );
+ LookupType = FT_NEXT_USHORT( p );
+ p += 2; /* skip LookupFlag */
+ SubTableCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (type %d)\n", LookupType ));
+
+ if ( LookupType == 0 || LookupType >= valid->type_count )
+ FT_INVALID_DATA;
+
+ validate = valid->type_funcs[LookupType - 1];
+
+ OTV_TRACE(( " (SubTableCount = %d)\n", SubTableCount ));
+
+ OTV_LIMIT_CHECK( SubTableCount * 2 );
+
+ /* SubTable */
+ for ( ; SubTableCount > 0; SubTableCount-- )
+ validate( table + FT_NEXT_USHORT( p ), valid );
+
+ OTV_EXIT;
+ }
+
+
+ /* uses valid->lookup_count */
+
+ FT_LOCAL_DEF( void )
+ otv_LookupList_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt LookupCount;
+
+
+ OTV_NAME_ENTER( "LookupList" );
+
+ OTV_LIMIT_CHECK( 2 );
+ LookupCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LookupCount = %d)\n", LookupCount ));
+
+ OTV_LIMIT_CHECK( LookupCount * 2 );
+
+ valid->lookup_count = LookupCount;
+
+ /* Lookup */
+ for ( ; LookupCount > 0; LookupCount-- )
+ otv_Lookup_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ OTV_EXIT;
+ }
+
+
+ static FT_UInt
+ otv_LookupList_get_count( FT_Bytes table )
+ {
+ return FT_NEXT_USHORT( table );
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** FEATURES *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->lookup_count */
+
+ FT_LOCAL_DEF( void )
+ otv_Feature_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt LookupCount;
+
+
+ OTV_NAME_ENTER( "Feature" );
+
+ OTV_LIMIT_CHECK( 4 );
+ p += 2; /* skip FeatureParams (unused) */
+ LookupCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LookupCount = %d)\n", LookupCount ));
+
+ OTV_LIMIT_CHECK( LookupCount * 2 );
+
+ /* LookupListIndex */
+ for ( ; LookupCount > 0; LookupCount-- )
+ if ( FT_NEXT_USHORT( p ) >= valid->lookup_count )
+ FT_INVALID_DATA;
+
+ OTV_EXIT;
+ }
+
+
+ static FT_UInt
+ otv_Feature_get_count( FT_Bytes table )
+ {
+ return FT_NEXT_USHORT( table );
+ }
+
+
+ /* sets valid->lookup_count */
+
+ FT_LOCAL_DEF( void )
+ otv_FeatureList_validate( FT_Bytes table,
+ FT_Bytes lookups,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt FeatureCount;
+
+
+ OTV_NAME_ENTER( "FeatureList" );
+
+ OTV_LIMIT_CHECK( 2 );
+ FeatureCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (FeatureCount = %d)\n", FeatureCount ));
+
+ OTV_LIMIT_CHECK( FeatureCount * 2 );
+
+ valid->lookup_count = otv_LookupList_get_count( lookups );
+
+ /* FeatureRecord */
+ for ( ; FeatureCount > 0; FeatureCount-- )
+ {
+ p += 4; /* skip FeatureTag */
+
+ /* Feature */
+ otv_Feature_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** LANGUAGE SYSTEM *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+ /* uses valid->extra1 (number of features) */
+
+ FT_LOCAL_DEF( void )
+ otv_LangSys_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt ReqFeatureIndex;
+ FT_UInt FeatureCount;
+
+
+ OTV_NAME_ENTER( "LangSys" );
+
+ OTV_LIMIT_CHECK( 6 );
+ p += 2; /* skip LookupOrder (unused) */
+ ReqFeatureIndex = FT_NEXT_USHORT( p );
+ FeatureCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ReqFeatureIndex = %d)\n", ReqFeatureIndex ));
+ OTV_TRACE(( " (FeatureCount = %d)\n", FeatureCount ));
+
+ if ( ReqFeatureIndex != 0xFFFFU && ReqFeatureIndex >= valid->extra1 )
+ FT_INVALID_DATA;
+
+ OTV_LIMIT_CHECK( FeatureCount * 2 );
+
+ /* FeatureIndex */
+ for ( ; FeatureCount > 0; FeatureCount-- )
+ if ( FT_NEXT_USHORT( p ) >= valid->extra1 )
+ FT_INVALID_DATA;
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** SCRIPTS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ otv_Script_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_UInt DefaultLangSys, LangSysCount;
+ FT_Bytes p = table;
+
+
+ OTV_NAME_ENTER( "Script" );
+
+ OTV_LIMIT_CHECK( 4 );
+ DefaultLangSys = FT_NEXT_USHORT( p );
+ LangSysCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LangSysCount = %d)\n", LangSysCount ));
+
+ if ( DefaultLangSys != 0 )
+ otv_LangSys_validate( table + DefaultLangSys, valid );
+
+ OTV_LIMIT_CHECK( LangSysCount * 6 );
+
+ /* LangSysRecord */
+ for ( ; LangSysCount > 0; LangSysCount-- )
+ {
+ p += 4; /* skip LangSysTag */
+
+ /* LangSys */
+ otv_LangSys_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra1 (number of features) */
+
+ FT_LOCAL_DEF( void )
+ otv_ScriptList_validate( FT_Bytes table,
+ FT_Bytes features,
+ OTV_Validator valid )
+ {
+ FT_UInt ScriptCount;
+ FT_Bytes p = table;
+
+
+ OTV_NAME_ENTER( "ScriptList" );
+
+ OTV_LIMIT_CHECK( 2 );
+ ScriptCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ScriptCount = %d)\n", ScriptCount ));
+
+ OTV_LIMIT_CHECK( ScriptCount * 6 );
+
+ valid->extra1 = otv_Feature_get_count( features );
+
+ /* ScriptRecord */
+ for ( ; ScriptCount > 0; ScriptCount-- )
+ {
+ p += 4; /* skip ScriptTag */
+
+ otv_Script_validate( table + FT_NEXT_USHORT( p ), valid ); /* Script */
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** UTILITY FUNCTIONS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /*
+ u: uint16
+ ux: unit16 [x]
+
+ s: struct
+ sx: struct [x]
+ sxy: struct [x], using external y count
+
+ x: uint16 x
+
+ C: Coverage
+
+ O: Offset
+ On: Offset (NULL)
+ Ox: Offset [x]
+ Onx: Offset (NULL) [x]
+ */
+
+ FT_LOCAL_DEF( void )
+ otv_x_Ox( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Count;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 2 );
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ OTV_LIMIT_CHECK( Count * 2 );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+
+ for ( ; Count > 0; Count-- )
+ func( table + FT_NEXT_USHORT( p ), valid );
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ otv_u_C_x_Ox( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Count, Coverage;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip Format */
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = FT_NEXT_USHORT( p );
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ OTV_LIMIT_CHECK( Count * 2 );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+
+ for ( ; Count > 0; Count-- )
+ func( table + FT_NEXT_USHORT( p ), valid );
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ /* uses valid->extra1 (if > 0: array value limit) */
+
+ FT_LOCAL_DEF( void )
+ otv_x_ux( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Count;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 2 );
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ OTV_LIMIT_CHECK( Count * 2 );
+
+ if ( valid->extra1 )
+ {
+ for ( ; Count > 0; Count-- )
+ if ( FT_NEXT_USHORT( p ) >= valid->extra1 )
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* `ux' in the function's name is not really correct since only x-1 */
+ /* elements are tested */
+
+ /* uses valid->extra1 (array value limit) */
+
+ FT_LOCAL_DEF( void )
+ otv_x_y_ux_sy( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Count1, Count2;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 4 );
+ Count1 = FT_NEXT_USHORT( p );
+ Count2 = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count1 = %d)\n", Count1 ));
+ OTV_TRACE(( " (Count2 = %d)\n", Count2 ));
+
+ if ( Count1 == 0 )
+ FT_INVALID_DATA;
+
+ OTV_LIMIT_CHECK( ( Count1 - 1 ) * 2 + Count2 * 4 );
+
+ for ( ; Count2 > 0; Count2-- )
+ {
+ if ( FT_NEXT_USHORT( p ) >= Count1 )
+ FT_INVALID_DATA;
+
+ if ( FT_NEXT_USHORT( p ) >= valid->extra1 )
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* `uy' in the function's name is not really correct since only y-1 */
+ /* elements are tested */
+
+ /* uses valid->extra1 (array value limit) */
+
+ FT_LOCAL_DEF( void )
+ otv_x_ux_y_uy_z_uz_p_sp( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BacktrackCount, InputCount, LookaheadCount;
+ FT_UInt Count;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 2 );
+ BacktrackCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BacktrackCount = %d)\n", BacktrackCount ));
+
+ OTV_LIMIT_CHECK( BacktrackCount * 2 + 2 );
+ p += BacktrackCount * 2;
+
+ InputCount = FT_NEXT_USHORT( p );
+ if ( InputCount == 0 )
+ FT_INVALID_DATA;
+
+ OTV_TRACE(( " (InputCount = %d)\n", InputCount ));
+
+ OTV_LIMIT_CHECK( InputCount * 2 );
+ p += ( InputCount - 1 ) * 2;
+
+ LookaheadCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LookaheadCount = %d)\n", LookaheadCount ));
+
+ OTV_LIMIT_CHECK( LookaheadCount * 2 + 2 );
+ p += LookaheadCount * 2;
+
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ OTV_LIMIT_CHECK( Count * 4 );
+
+ for ( ; Count > 0; Count-- )
+ {
+ if ( FT_NEXT_USHORT( p ) >= InputCount )
+ FT_INVALID_DATA;
+
+ if ( FT_NEXT_USHORT( p ) >= valid->extra1 )
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra1 (valid->lookup_count) */
+
+ FT_LOCAL_DEF( void )
+ otv_u_O_O_x_Onx( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Coverage, ClassDef, ClassSetCount;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip Format */
+
+ OTV_LIMIT_CHECK( 6 );
+ Coverage = FT_NEXT_USHORT( p );
+ ClassDef = FT_NEXT_USHORT( p );
+ ClassSetCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ClassSetCount = %d)\n", ClassSetCount ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+ otv_ClassDef_validate( table + ClassDef, valid );
+
+ OTV_LIMIT_CHECK( ClassSetCount * 2 );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+ valid->extra1 = valid->lookup_count;
+
+ for ( ; ClassSetCount > 0; ClassSetCount-- )
+ {
+ FT_UInt offset = FT_NEXT_USHORT( p );
+
+
+ if ( offset )
+ func( table + offset, valid );
+ }
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ /* uses valid->lookup_count */
+
+ FT_LOCAL_DEF( void )
+ otv_u_x_y_Ox_sy( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt GlyphCount, Count, count1;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip Format */
+
+ OTV_LIMIT_CHECK( 4 );
+ GlyphCount = FT_NEXT_USHORT( p );
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 + Count * 4 );
+
+ for ( count1 = GlyphCount; count1 > 0; count1-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ for ( ; Count > 0; Count-- )
+ {
+ if ( FT_NEXT_USHORT( p ) >= GlyphCount )
+ FT_INVALID_DATA;
+
+ if ( FT_NEXT_USHORT( p ) >= valid->lookup_count )
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra1 (valid->lookup_count) */
+
+ FT_LOCAL_DEF( void )
+ otv_u_O_O_O_O_x_Onx( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Coverage;
+ FT_UInt BacktrackClassDef, InputClassDef, LookaheadClassDef;
+ FT_UInt ChainClassSetCount;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip Format */
+
+ OTV_LIMIT_CHECK( 10 );
+ Coverage = FT_NEXT_USHORT( p );
+ BacktrackClassDef = FT_NEXT_USHORT( p );
+ InputClassDef = FT_NEXT_USHORT( p );
+ LookaheadClassDef = FT_NEXT_USHORT( p );
+ ChainClassSetCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ChainClassSetCount = %d)\n", ChainClassSetCount ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ otv_ClassDef_validate( table + BacktrackClassDef, valid );
+ otv_ClassDef_validate( table + InputClassDef, valid );
+ otv_ClassDef_validate( table + LookaheadClassDef, valid );
+
+ OTV_LIMIT_CHECK( ChainClassSetCount * 2 );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+ valid->extra1 = valid->lookup_count;
+
+ for ( ; ChainClassSetCount > 0; ChainClassSetCount-- )
+ {
+ FT_UInt offset = FT_NEXT_USHORT( p );
+
+
+ if ( offset )
+ func( table + offset, valid );
+ }
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ /* uses valid->lookup_count */
+
+ FT_LOCAL_DEF( void )
+ otv_u_x_Ox_y_Oy_z_Oz_p_sp( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt BacktrackGlyphCount, InputGlyphCount, LookaheadGlyphCount;
+ FT_UInt count1, count2;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip Format */
+
+ OTV_LIMIT_CHECK( 2 );
+ BacktrackGlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BacktrackGlyphCount = %d)\n", BacktrackGlyphCount ));
+
+ OTV_LIMIT_CHECK( BacktrackGlyphCount * 2 + 2 );
+
+ for ( ; BacktrackGlyphCount > 0; BacktrackGlyphCount-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ InputGlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (InputGlyphCount = %d)\n", InputGlyphCount ));
+
+ OTV_LIMIT_CHECK( InputGlyphCount * 2 + 2 );
+
+ for ( count1 = InputGlyphCount; count1 > 0; count1-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ LookaheadGlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LookaheadGlyphCount = %d)\n", LookaheadGlyphCount ));
+
+ OTV_LIMIT_CHECK( LookaheadGlyphCount * 2 + 2 );
+
+ for ( ; LookaheadGlyphCount > 0; LookaheadGlyphCount-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ count2 = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", count2 ));
+
+ OTV_LIMIT_CHECK( count2 * 4 );
+
+ for ( ; count2 > 0; count2-- )
+ {
+ if ( FT_NEXT_USHORT( p ) >= InputGlyphCount )
+ FT_INVALID_DATA;
+
+ if ( FT_NEXT_USHORT( p ) >= valid->lookup_count )
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ otv_GSUBGPOS_get_Lookup_count( FT_Bytes table )
+ {
+ FT_Bytes p = table + 8;
+
+
+ return otv_LookupList_get_count( table + FT_NEXT_USHORT( p ) );
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ otv_GSUBGPOS_have_MarkAttachmentType_flag( FT_Bytes table )
+ {
+ FT_Bytes p, lookup;
+ FT_UInt count;
+
+
+ if ( !table )
+ return 0;
+
+ /* LookupList */
+ p = table + 8;
+ table += FT_NEXT_USHORT( p );
+
+ /* LookupCount */
+ p = table;
+ count = FT_NEXT_USHORT( p );
+
+ for ( ; count > 0; count-- )
+ {
+ FT_Bytes oldp;
+
+
+ /* Lookup */
+ lookup = table + FT_NEXT_USHORT( p );
+
+ oldp = p;
+
+ /* LookupFlag */
+ p = lookup + 2;
+ if ( FT_NEXT_USHORT( p ) & 0xFF00U )
+ return 1;
+
+ p = oldp;
+ }
+
+ return 0;
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvcommn.h b/src/freetype2/otvalid/otvcommn.h
new file mode 100644
index 0000000..be6ac69
--- /dev/null
+++ b/src/freetype2/otvalid/otvcommn.h
@@ -0,0 +1,436 @@
+/***************************************************************************/
+/* */
+/* otvcommn.h */
+/* */
+/* OpenType common tables validation (specification). */
+/* */
+/* Copyright 2004, 2005 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __OTVCOMMN_H__
+#define __OTVCOMMN_H__
+
+
+#include <ft2build.h>
+#include "otvalid.h"
+#include FT_INTERNAL_DEBUG_H
+
+
+FT_BEGIN_HEADER
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** VALIDATION *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ typedef struct OTV_ValidatorRec_* OTV_Validator;
+
+ typedef void (*OTV_Validate_Func)( FT_Bytes table,
+ OTV_Validator valid );
+
+ typedef struct OTV_ValidatorRec_
+ {
+ FT_Validator root;
+ FT_UInt type_count;
+ OTV_Validate_Func* type_funcs;
+
+ FT_UInt lookup_count;
+ FT_UInt glyph_count;
+
+ FT_UInt nesting_level;
+
+ OTV_Validate_Func func[3];
+
+ FT_UInt extra1; /* for passing parameters */
+ FT_UInt extra2;
+ FT_Bytes extra3;
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_UInt debug_indent;
+ const FT_String* debug_function_name[3];
+#endif
+
+ } OTV_ValidatorRec;
+
+
+#undef FT_INVALID_
+#define FT_INVALID_( _prefix, _error ) \
+ ft_validator_error( valid->root, _prefix ## _error )
+
+#define OTV_OPTIONAL_TABLE( _table ) FT_UShort _table; \
+ FT_Bytes _table ## _p
+
+#define OTV_OPTIONAL_OFFSET( _offset ) \
+ FT_BEGIN_STMNT \
+ _offset ## _p = p; \
+ _offset = FT_NEXT_USHORT( p ); \
+ FT_END_STMNT
+
+#define OTV_LIMIT_CHECK( _count ) \
+ FT_BEGIN_STMNT \
+ if ( p + (_count) > valid->root->limit ) \
+ FT_INVALID_TOO_SHORT; \
+ FT_END_STMNT
+
+#define OTV_SIZE_CHECK( _size ) \
+ FT_BEGIN_STMNT \
+ if ( _size > 0 && _size < table_size ) \
+ { \
+ if ( valid->root->level == FT_VALIDATE_PARANOID ) \
+ FT_INVALID_OFFSET; \
+ else \
+ { \
+ /* strip off `const' */ \
+ FT_Byte* pp = (FT_Byte*)_size ## _p; \
+ \
+ \
+ FT_TRACE3(( "\n" \
+ "Invalid offset to optional table `%s'!\n" \
+ "Set to zero.\n" \
+ "\n", #_size )); \
+ \
+ /* always assume 16bit entities */ \
+ _size = pp[0] = pp[1] = 0; \
+ } \
+ } \
+ FT_END_STMNT
+
+
+#define OTV_NAME_(x) #x
+#define OTV_NAME(x) OTV_NAME_(x)
+
+#define OTV_FUNC_(x) x##Func
+#define OTV_FUNC(x) OTV_FUNC_(x)
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+#define OTV_NEST1( x ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ valid->debug_function_name[0] = OTV_NAME( x ); \
+ FT_END_STMNT
+
+#define OTV_NEST2( x, y ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ valid->func[1] = OTV_FUNC( y ); \
+ valid->debug_function_name[0] = OTV_NAME( x ); \
+ valid->debug_function_name[1] = OTV_NAME( y ); \
+ FT_END_STMNT
+
+#define OTV_NEST3( x, y, z ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ valid->func[1] = OTV_FUNC( y ); \
+ valid->func[2] = OTV_FUNC( z ); \
+ valid->debug_function_name[0] = OTV_NAME( x ); \
+ valid->debug_function_name[1] = OTV_NAME( y ); \
+ valid->debug_function_name[2] = OTV_NAME( z ); \
+ FT_END_STMNT
+
+#define OTV_INIT valid->debug_indent = 0
+
+#define OTV_ENTER \
+ FT_BEGIN_STMNT \
+ valid->debug_indent += 2; \
+ FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
+ FT_TRACE4(( "%s table\n", \
+ valid->debug_function_name[valid->nesting_level] )); \
+ FT_END_STMNT
+
+#define OTV_NAME_ENTER( name ) \
+ FT_BEGIN_STMNT \
+ valid->debug_indent += 2; \
+ FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
+ FT_TRACE4(( "%s table\n", name )); \
+ FT_END_STMNT
+
+#define OTV_EXIT valid->debug_indent -= 2
+
+#define OTV_TRACE( s ) \
+ FT_BEGIN_STMNT \
+ FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
+ FT_TRACE4( s ); \
+ FT_END_STMNT
+
+#else /* !FT_DEBUG_LEVEL_TRACE */
+
+#define OTV_NEST1( x ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ FT_END_STMNT
+
+#define OTV_NEST2( x, y ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ valid->func[1] = OTV_FUNC( y ); \
+ FT_END_STMNT
+
+#define OTV_NEST3( x, y, z ) \
+ FT_BEGIN_STMNT \
+ valid->nesting_level = 0; \
+ valid->func[0] = OTV_FUNC( x ); \
+ valid->func[1] = OTV_FUNC( y ); \
+ valid->func[2] = OTV_FUNC( z ); \
+ FT_END_STMNT
+
+#define OTV_INIT do ; while ( 0 )
+#define OTV_ENTER do ; while ( 0 )
+#define OTV_NAME_ENTER( name ) do ; while ( 0 )
+#define OTV_EXIT do ; while ( 0 )
+
+#define OTV_TRACE( s ) do ; while ( 0 )
+
+#endif /* !FT_DEBUG_LEVEL_TRACE */
+
+
+#define OTV_RUN valid->func[0]
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** COVERAGE TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_Coverage_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+ /* return first covered glyph */
+ FT_LOCAL( FT_UInt )
+ otv_Coverage_get_first( FT_Bytes table );
+
+ /* return last covered glyph */
+ FT_LOCAL( FT_UInt )
+ otv_Coverage_get_last( FT_Bytes table );
+
+ /* return number of covered glyphs */
+ FT_LOCAL( FT_UInt )
+ otv_Coverage_get_count( FT_Bytes table );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** CLASS DEFINITION TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_ClassDef_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** DEVICE TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_Device_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** LOOKUPS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_Lookup_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+ FT_LOCAL( void )
+ otv_LookupList_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** FEATURES *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_Feature_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+ /* lookups must already be validated */
+ FT_LOCAL( void )
+ otv_FeatureList_validate( FT_Bytes table,
+ FT_Bytes lookups,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** LANGUAGE SYSTEM *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_LangSys_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** SCRIPTS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ otv_Script_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+ /* features must already be validated */
+ FT_LOCAL( void )
+ otv_ScriptList_validate( FT_Bytes table,
+ FT_Bytes features,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** UTILITY FUNCTIONS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define ChainPosClassSetFunc otv_x_Ox
+#define ChainPosRuleSetFunc otv_x_Ox
+#define ChainSubClassSetFunc otv_x_Ox
+#define ChainSubRuleSetFunc otv_x_Ox
+#define JstfLangSysFunc otv_x_Ox
+#define JstfMaxFunc otv_x_Ox
+#define LigGlyphFunc otv_x_Ox
+#define LigatureArrayFunc otv_x_Ox
+#define LigatureSetFunc otv_x_Ox
+#define PosClassSetFunc otv_x_Ox
+#define PosRuleSetFunc otv_x_Ox
+#define SubClassSetFunc otv_x_Ox
+#define SubRuleSetFunc otv_x_Ox
+
+ FT_LOCAL( void )
+ otv_x_Ox ( FT_Bytes table,
+ OTV_Validator valid );
+
+#define AlternateSubstFormat1Func otv_u_C_x_Ox
+#define ChainContextPosFormat1Func otv_u_C_x_Ox
+#define ChainContextSubstFormat1Func otv_u_C_x_Ox
+#define ContextPosFormat1Func otv_u_C_x_Ox
+#define ContextSubstFormat1Func otv_u_C_x_Ox
+#define LigatureSubstFormat1Func otv_u_C_x_Ox
+#define MultipleSubstFormat1Func otv_u_C_x_Ox
+
+ FT_LOCAL( void )
+ otv_u_C_x_Ox( FT_Bytes table,
+ OTV_Validator valid );
+
+#define AlternateSetFunc otv_x_ux
+#define AttachPointFunc otv_x_ux
+#define ExtenderGlyphFunc otv_x_ux
+#define JstfGPOSModListFunc otv_x_ux
+#define JstfGSUBModListFunc otv_x_ux
+#define SequenceFunc otv_x_ux
+
+ FT_LOCAL( void )
+ otv_x_ux( FT_Bytes table,
+ OTV_Validator valid );
+
+#define PosClassRuleFunc otv_x_y_ux_sy
+#define PosRuleFunc otv_x_y_ux_sy
+#define SubClassRuleFunc otv_x_y_ux_sy
+#define SubRuleFunc otv_x_y_ux_sy
+
+ FT_LOCAL( void )
+ otv_x_y_ux_sy( FT_Bytes table,
+ OTV_Validator valid );
+
+#define ChainPosClassRuleFunc otv_x_ux_y_uy_z_uz_p_sp
+#define ChainPosRuleFunc otv_x_ux_y_uy_z_uz_p_sp
+#define ChainSubClassRuleFunc otv_x_ux_y_uy_z_uz_p_sp
+#define ChainSubRuleFunc otv_x_ux_y_uy_z_uz_p_sp
+
+ FT_LOCAL( void )
+ otv_x_ux_y_uy_z_uz_p_sp( FT_Bytes table,
+ OTV_Validator valid );
+
+#define ContextPosFormat2Func otv_u_O_O_x_Onx
+#define ContextSubstFormat2Func otv_u_O_O_x_Onx
+
+ FT_LOCAL( void )
+ otv_u_O_O_x_Onx( FT_Bytes table,
+ OTV_Validator valid );
+
+#define ContextPosFormat3Func otv_u_x_y_Ox_sy
+#define ContextSubstFormat3Func otv_u_x_y_Ox_sy
+
+ FT_LOCAL( void )
+ otv_u_x_y_Ox_sy( FT_Bytes table,
+ OTV_Validator valid );
+
+#define ChainContextPosFormat2Func otv_u_O_O_O_O_x_Onx
+#define ChainContextSubstFormat2Func otv_u_O_O_O_O_x_Onx
+
+ FT_LOCAL( void )
+ otv_u_O_O_O_O_x_Onx( FT_Bytes table,
+ OTV_Validator valid );
+
+#define ChainContextPosFormat3Func otv_u_x_Ox_y_Oy_z_Oz_p_sp
+#define ChainContextSubstFormat3Func otv_u_x_Ox_y_Oy_z_Oz_p_sp
+
+ FT_LOCAL( void )
+ otv_u_x_Ox_y_Oy_z_Oz_p_sp( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ FT_LOCAL( FT_UInt )
+ otv_GSUBGPOS_get_Lookup_count( FT_Bytes table );
+
+ FT_LOCAL( FT_UInt )
+ otv_GSUBGPOS_have_MarkAttachmentType_flag( FT_Bytes table );
+
+ /* */
+
+FT_END_HEADER
+
+#endif /* __OTVCOMMN_H__ */
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otverror.h b/src/freetype2/otvalid/otverror.h
new file mode 100644
index 0000000..041b538
--- /dev/null
+++ b/src/freetype2/otvalid/otverror.h
@@ -0,0 +1,43 @@
+/***************************************************************************/
+/* */
+/* otverror.h */
+/* */
+/* OpenType validation module error codes (specification only). */
+/* */
+/* Copyright 2004, 2005 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* This file is used to define the OpenType validation module error */
+ /* enumeration constants. */
+ /* */
+ /*************************************************************************/
+
+#ifndef __OTVERROR_H__
+#define __OTVERROR_H__
+
+#include FT_MODULE_ERRORS_H
+
+#undef __FTERRORS_H__
+
+#define FT_ERR_PREFIX OTV_Err_
+#define FT_ERR_BASE FT_Mod_Err_OTvalid
+
+#define FT_KEEP_ERR_PREFIX
+
+#include FT_ERRORS_H
+
+#endif /* __OTVERROR_H__ */
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvgdef.c b/src/freetype2/otvalid/otvgdef.c
new file mode 100644
index 0000000..7d24902
--- /dev/null
+++ b/src/freetype2/otvalid/otvgdef.c
@@ -0,0 +1,219 @@
+/***************************************************************************/
+/* */
+/* otvgdef.c */
+/* */
+/* OpenType GDEF table validation (body). */
+/* */
+/* Copyright 2004, 2005 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvgdef
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** UTILITY FUNCTIONS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define AttachListFunc otv_O_x_Ox
+#define LigCaretListFunc otv_O_x_Ox
+
+ /* sets valid->extra1 (0) */
+
+ static void
+ otv_O_x_Ox( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_Bytes Coverage;
+ FT_UInt GlyphCount;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = table + FT_NEXT_USHORT( p );
+ GlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+
+ otv_Coverage_validate( Coverage, valid );
+ if ( GlyphCount != otv_Coverage_get_count( Coverage ) )
+ FT_INVALID_DATA;
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+ valid->extra1 = 0;
+
+ for ( ; GlyphCount > 0; GlyphCount-- )
+ func( table + FT_NEXT_USHORT( p ), valid );
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** LIGATURE CARETS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define CaretValueFunc otv_CaretValue_validate
+
+ static void
+ otv_CaretValue_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt CaretValueFormat;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 4 );
+
+ CaretValueFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format = %d)\n", CaretValueFormat ));
+
+ switch ( CaretValueFormat )
+ {
+ case 1: /* CaretValueFormat1 */
+ /* skip Coordinate, no test */
+ break;
+
+ case 2: /* CaretValueFormat2 */
+ /* skip CaretValuePoint, no test */
+ break;
+
+ case 3: /* CaretValueFormat3 */
+ p += 2; /* skip Coordinate */
+
+ OTV_LIMIT_CHECK( 2 );
+
+ /* DeviceTable */
+ otv_Device_validate( table + FT_NEXT_USHORT( p ), valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GDEF TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ otv_GDEF_validate( FT_Bytes table,
+ FT_Bytes gsub,
+ FT_Bytes gpos,
+ FT_Validator ftvalid )
+ {
+ OTV_ValidatorRec validrec;
+ OTV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_UInt table_size;
+ FT_Bool need_MarkAttachClassDef;
+
+ OTV_OPTIONAL_TABLE( GlyphClassDef );
+ OTV_OPTIONAL_TABLE( AttachListOffset );
+ OTV_OPTIONAL_TABLE( LigCaretListOffset );
+ OTV_OPTIONAL_TABLE( MarkAttachClassDef );
+
+
+ valid->root = ftvalid;
+
+ FT_TRACE3(( "validating GDEF table\n" ));
+ OTV_INIT;
+
+ OTV_LIMIT_CHECK( 12 );
+
+ if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
+ FT_INVALID_FORMAT;
+
+ /* MarkAttachClassDef has been added to the OpenType */
+ /* specification without increasing GDEF's version, */
+ /* so we use this ugly hack to find out whether the */
+ /* table is needed actually. */
+
+ need_MarkAttachClassDef = FT_BOOL(
+ otv_GSUBGPOS_have_MarkAttachmentType_flag( gsub ) ||
+ otv_GSUBGPOS_have_MarkAttachmentType_flag( gpos ) );
+
+ if ( need_MarkAttachClassDef )
+ table_size = 12; /* OpenType >= 1.2 */
+ else
+ table_size = 10; /* OpenType < 1.2 */
+
+ OTV_OPTIONAL_OFFSET( GlyphClassDef );
+ OTV_SIZE_CHECK( GlyphClassDef );
+ if ( GlyphClassDef )
+ otv_ClassDef_validate( table + GlyphClassDef, valid );
+
+ OTV_OPTIONAL_OFFSET( AttachListOffset );
+ OTV_SIZE_CHECK( AttachListOffset );
+ if ( AttachListOffset )
+ {
+ OTV_NEST2( AttachList, AttachPoint );
+ OTV_RUN( table + AttachListOffset, valid );
+ }
+
+ OTV_OPTIONAL_OFFSET( LigCaretListOffset );
+ OTV_SIZE_CHECK( LigCaretListOffset );
+ if ( LigCaretListOffset )
+ {
+ OTV_NEST3( LigCaretList, LigGlyph, CaretValue );
+ OTV_RUN( table + LigCaretListOffset, valid );
+ }
+
+ if ( need_MarkAttachClassDef )
+ {
+ OTV_OPTIONAL_OFFSET( MarkAttachClassDef );
+ OTV_SIZE_CHECK( MarkAttachClassDef );
+ if ( MarkAttachClassDef )
+ otv_ClassDef_validate( table + MarkAttachClassDef, valid );
+ }
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvgpos.c b/src/freetype2/otvalid/otvgpos.c
new file mode 100644
index 0000000..ed34705
--- /dev/null
+++ b/src/freetype2/otvalid/otvgpos.c
@@ -0,0 +1,1013 @@
+/***************************************************************************/
+/* */
+/* otvgpos.c */
+/* */
+/* OpenType GPOS table validation (body). */
+/* */
+/* Copyright 2002, 2004, 2005, 2006 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.h"
+#include "otvgpos.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvgpos
+
+
+ static void
+ otv_Anchor_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+ static void
+ otv_MarkArray_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** UTILITY FUNCTIONS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define BaseArrayFunc otv_x_sxy
+#define LigatureAttachFunc otv_x_sxy
+#define Mark2ArrayFunc otv_x_sxy
+
+ /* uses valid->extra1 (counter) */
+ /* uses valid->extra2 (boolean to handle NULL anchor field) */
+
+ static void
+ otv_x_sxy( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Count, count1, table_size;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 2 );
+
+ Count = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (Count = %d)\n", Count ));
+
+ OTV_LIMIT_CHECK( Count * valid->extra1 * 2 );
+
+ table_size = Count * valid->extra1 * 2 + 2;
+
+ for ( ; Count > 0; Count-- )
+ for ( count1 = valid->extra1; count1 > 0; count1-- )
+ {
+ OTV_OPTIONAL_TABLE( anchor_offset );
+
+
+ OTV_OPTIONAL_OFFSET( anchor_offset );
+
+ if ( valid->extra2 )
+ {
+ OTV_SIZE_CHECK( anchor_offset );
+ if ( anchor_offset )
+ otv_Anchor_validate( table + anchor_offset, valid );
+ }
+ else
+ otv_Anchor_validate( table + anchor_offset, valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+#define MarkBasePosFormat1Func otv_u_O_O_u_O_O
+#define MarkLigPosFormat1Func otv_u_O_O_u_O_O
+#define MarkMarkPosFormat1Func otv_u_O_O_u_O_O
+
+ /* sets valid->extra1 (class count) */
+
+ static void
+ otv_u_O_O_u_O_O( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt Coverage1, Coverage2, ClassCount;
+ FT_UInt Array1, Array2;
+ OTV_Validate_Func func;
+
+
+ OTV_ENTER;
+
+ p += 2; /* skip PosFormat */
+
+ OTV_LIMIT_CHECK( 10 );
+ Coverage1 = FT_NEXT_USHORT( p );
+ Coverage2 = FT_NEXT_USHORT( p );
+ ClassCount = FT_NEXT_USHORT( p );
+ Array1 = FT_NEXT_USHORT( p );
+ Array2 = FT_NEXT_USHORT( p );
+
+ otv_Coverage_validate( table + Coverage1, valid );
+ otv_Coverage_validate( table + Coverage2, valid );
+
+ otv_MarkArray_validate( table + Array1, valid );
+
+ valid->nesting_level++;
+ func = valid->func[valid->nesting_level];
+ valid->extra1 = ClassCount;
+
+ func( table + Array2, valid );
+
+ valid->nesting_level--;
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** VALUE RECORDS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ static FT_UInt
+ otv_value_length( FT_UInt format )
+ {
+ FT_UInt count;
+
+
+ count = ( ( format & 0xAA ) >> 1 ) + ( format & 0x55 );
+ count = ( ( count & 0xCC ) >> 2 ) + ( count & 0x33 );
+ count = ( ( count & 0xF0 ) >> 4 ) + ( count & 0x0F );
+
+ return count * 2;
+ }
+
+
+ /* uses valid->extra3 (pointer to base table) */
+
+ static void
+ otv_ValueRecord_validate( FT_Bytes table,
+ FT_UInt format,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt count;
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_Int loop;
+ FT_ULong res = 0;
+
+
+ OTV_NAME_ENTER( "ValueRecord" );
+
+ /* display `format' in dual representation */
+ for ( loop = 7; loop >= 0; loop-- )
+ {
+ res <<= 4;
+ res += ( format >> loop ) & 1;
+ }
+
+ OTV_TRACE(( " (format 0b%08lx)\n", res ));
+#endif
+
+ if ( format >= 0x100 )
+ FT_INVALID_DATA;
+
+ for ( count = 4; count > 0; count-- )
+ {
+ if ( format & 1 )
+ {
+ /* XPlacement, YPlacement, XAdvance, YAdvance */
+ OTV_LIMIT_CHECK( 2 );
+ p += 2;
+ }
+
+ format >>= 1;
+ }
+
+ for ( count = 4; count > 0; count-- )
+ {
+ if ( format & 1 )
+ {
+ FT_UInt table_size;
+
+ OTV_OPTIONAL_TABLE( device );
+
+
+ /* XPlaDevice, YPlaDevice, XAdvDevice, YAdvDevice */
+ OTV_LIMIT_CHECK( 2 );
+ OTV_OPTIONAL_OFFSET( device );
+
+ /* XXX: this value is usually too small, especially if the current */
+ /* ValueRecord is part of an array -- getting the correct table */
+ /* size is probably not worth the trouble */
+
+ table_size = p - valid->extra3;
+
+ OTV_SIZE_CHECK( device );
+ if ( device )
+ otv_Device_validate( valid->extra3 + device, valid );
+ }
+ format >>= 1;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** ANCHORS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ static void
+ otv_Anchor_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt AnchorFormat;
+
+
+ OTV_NAME_ENTER( "Anchor");
+
+ OTV_LIMIT_CHECK( 6 );
+ AnchorFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", AnchorFormat ));
+
+ p += 4; /* skip XCoordinate and YCoordinate */
+
+ switch ( AnchorFormat )
+ {
+ case 1:
+ break;
+
+ case 2:
+ OTV_LIMIT_CHECK( 2 ); /* AnchorPoint */
+ break;
+
+ case 3:
+ {
+ FT_UInt table_size;
+
+ OTV_OPTIONAL_TABLE( XDeviceTable );
+ OTV_OPTIONAL_TABLE( YDeviceTable );
+
+
+ OTV_LIMIT_CHECK( 4 );
+ OTV_OPTIONAL_OFFSET( XDeviceTable );
+ OTV_OPTIONAL_OFFSET( YDeviceTable );
+
+ table_size = 6 + 4;
+
+ OTV_SIZE_CHECK( XDeviceTable );
+ if ( XDeviceTable )
+ otv_Device_validate( table + XDeviceTable, valid );
+
+ OTV_SIZE_CHECK( YDeviceTable );
+ if ( YDeviceTable )
+ otv_Device_validate( table + YDeviceTable, valid );
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** MARK ARRAYS *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ static void
+ otv_MarkArray_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt MarkCount;
+
+
+ OTV_NAME_ENTER( "MarkArray" );
+
+ OTV_LIMIT_CHECK( 2 );
+ MarkCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (MarkCount = %d)\n", MarkCount ));
+
+ OTV_LIMIT_CHECK( MarkCount * 4 );
+
+ /* MarkRecord */
+ for ( ; MarkCount > 0; MarkCount-- )
+ {
+ p += 2; /* skip Class */
+ /* MarkAnchor */
+ otv_Anchor_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 1 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra3 (pointer to base table) */
+
+ static void
+ otv_SinglePos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "SinglePos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ valid->extra3 = table;
+
+ switch ( PosFormat )
+ {
+ case 1: /* SinglePosFormat1 */
+ {
+ FT_UInt Coverage, ValueFormat;
+
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = FT_NEXT_USHORT( p );
+ ValueFormat = FT_NEXT_USHORT( p );
+
+ otv_Coverage_validate( table + Coverage, valid );
+ otv_ValueRecord_validate( p, ValueFormat, valid ); /* Value */
+ }
+ break;
+
+ case 2: /* SinglePosFormat2 */
+ {
+ FT_UInt Coverage, ValueFormat, ValueCount, len_value;
+
+
+ OTV_LIMIT_CHECK( 6 );
+ Coverage = FT_NEXT_USHORT( p );
+ ValueFormat = FT_NEXT_USHORT( p );
+ ValueCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ValueCount = %d)\n", ValueCount ));
+
+ len_value = otv_value_length( ValueFormat );
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ OTV_LIMIT_CHECK( ValueCount * len_value );
+
+ /* Value */
+ for ( ; ValueCount > 0; ValueCount-- )
+ {
+ otv_ValueRecord_validate( p, ValueFormat, valid );
+ p += len_value;
+ }
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 2 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ static void
+ otv_PairSet_validate( FT_Bytes table,
+ FT_UInt format1,
+ FT_UInt format2,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt value_len1, value_len2, PairValueCount;
+
+
+ OTV_NAME_ENTER( "PairSet" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PairValueCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (PairValueCount = %d)\n", PairValueCount ));
+
+ value_len1 = otv_value_length( format1 );
+ value_len2 = otv_value_length( format2 );
+
+ OTV_LIMIT_CHECK( PairValueCount * ( value_len1 + value_len2 + 2 ) );
+
+ /* PairValueRecord */
+ for ( ; PairValueCount > 0; PairValueCount-- )
+ {
+ p += 2; /* skip SecondGlyph */
+
+ if ( format1 )
+ otv_ValueRecord_validate( p, format1, valid ); /* Value1 */
+ p += value_len1;
+
+ if ( format2 )
+ otv_ValueRecord_validate( p, format2, valid ); /* Value2 */
+ p += value_len2;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra3 (pointer to base table) */
+
+ static void
+ otv_PairPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "PairPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ valid->extra3 = table;
+
+ switch ( PosFormat )
+ {
+ case 1: /* PairPosFormat1 */
+ {
+ FT_UInt Coverage, ValueFormat1, ValueFormat2, PairSetCount;
+
+
+ OTV_LIMIT_CHECK( 8 );
+ Coverage = FT_NEXT_USHORT( p );
+ ValueFormat1 = FT_NEXT_USHORT( p );
+ ValueFormat2 = FT_NEXT_USHORT( p );
+ PairSetCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (PairSetCount = %d)\n", PairSetCount ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ OTV_LIMIT_CHECK( PairSetCount * 2 );
+
+ /* PairSetOffset */
+ for ( ; PairSetCount > 0; PairSetCount-- )
+ otv_PairSet_validate( table + FT_NEXT_USHORT( p ),
+ ValueFormat1, ValueFormat2, valid );
+ }
+ break;
+
+ case 2: /* PairPosFormat2 */
+ {
+ FT_UInt Coverage, ValueFormat1, ValueFormat2, ClassDef1, ClassDef2;
+ FT_UInt ClassCount1, ClassCount2, len_value1, len_value2, count;
+
+
+ OTV_LIMIT_CHECK( 14 );
+ Coverage = FT_NEXT_USHORT( p );
+ ValueFormat1 = FT_NEXT_USHORT( p );
+ ValueFormat2 = FT_NEXT_USHORT( p );
+ ClassDef1 = FT_NEXT_USHORT( p );
+ ClassDef2 = FT_NEXT_USHORT( p );
+ ClassCount1 = FT_NEXT_USHORT( p );
+ ClassCount2 = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (ClassCount1 = %d)\n", ClassCount1 ));
+ OTV_TRACE(( " (ClassCount2 = %d)\n", ClassCount2 ));
+
+ len_value1 = otv_value_length( ValueFormat1 );
+ len_value2 = otv_value_length( ValueFormat2 );
+
+ otv_Coverage_validate( table + Coverage, valid );
+ otv_ClassDef_validate( table + ClassDef1, valid );
+ otv_ClassDef_validate( table + ClassDef2, valid );
+
+ OTV_LIMIT_CHECK( ClassCount1 * ClassCount2 *
+ ( len_value1 + len_value2 ) );
+
+ /* Class1Record */
+ for ( ; ClassCount1 > 0; ClassCount1-- )
+ {
+ /* Class2Record */
+ for ( count = ClassCount2; count > 0; count-- )
+ {
+ if ( ValueFormat1 )
+ /* Value1 */
+ otv_ValueRecord_validate( p, ValueFormat1, valid );
+ p += len_value1;
+
+ if ( ValueFormat2 )
+ /* Value2 */
+ otv_ValueRecord_validate( p, ValueFormat2, valid );
+ p += len_value2;
+ }
+ }
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 3 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ static void
+ otv_CursivePos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "CursivePos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1: /* CursivePosFormat1 */
+ {
+ FT_UInt table_size;
+ FT_UInt Coverage, EntryExitCount;
+
+ OTV_OPTIONAL_TABLE( EntryAnchor );
+ OTV_OPTIONAL_TABLE( ExitAnchor );
+
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = FT_NEXT_USHORT( p );
+ EntryExitCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (EntryExitCount = %d)\n", EntryExitCount ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ OTV_LIMIT_CHECK( EntryExitCount * 4 );
+
+ table_size = EntryExitCount * 4 + 4;
+
+ /* EntryExitRecord */
+ for ( ; EntryExitCount > 0; EntryExitCount-- )
+ {
+ OTV_OPTIONAL_OFFSET( EntryAnchor );
+ OTV_OPTIONAL_OFFSET( ExitAnchor );
+
+ OTV_SIZE_CHECK( EntryAnchor );
+ if ( EntryAnchor )
+ otv_Anchor_validate( table + EntryAnchor, valid );
+
+ OTV_SIZE_CHECK( ExitAnchor );
+ if ( ExitAnchor )
+ otv_Anchor_validate( table + ExitAnchor, valid );
+ }
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 4 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra2 (0) */
+
+ static void
+ otv_MarkBasePos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "MarkBasePos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1:
+ valid->extra2 = 0;
+ OTV_NEST2( MarkBasePosFormat1, BaseArray );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 5 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra2 (1) */
+
+ static void
+ otv_MarkLigPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "MarkLigPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1:
+ valid->extra2 = 1;
+ OTV_NEST3( MarkLigPosFormat1, LigatureArray, LigatureAttach );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 6 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra2 (0) */
+
+ static void
+ otv_MarkMarkPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "MarkMarkPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1:
+ valid->extra2 = 0;
+ OTV_NEST2( MarkMarkPosFormat1, Mark2Array );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 7 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (lookup count) */
+
+ static void
+ otv_ContextPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "ContextPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ valid->extra1 = valid->lookup_count;
+ OTV_NEST3( ContextPosFormat1, PosRuleSet, PosRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 2:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ OTV_NEST3( ContextPosFormat2, PosClassSet, PosClassRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 3:
+ OTV_NEST1( ContextPosFormat3 );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 8 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (lookup count) */
+
+ static void
+ otv_ChainContextPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "ChainContextPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ valid->extra1 = valid->lookup_count;
+ OTV_NEST3( ChainContextPosFormat1,
+ ChainPosRuleSet, ChainPosRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 2:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ OTV_NEST3( ChainContextPosFormat2,
+ ChainPosClassSet, ChainPosClassRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 3:
+ OTV_NEST1( ChainContextPosFormat3 );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS LOOKUP TYPE 9 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->type_funcs */
+
+ static void
+ otv_ExtensionPos_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt PosFormat;
+
+
+ OTV_NAME_ENTER( "ExtensionPos" );
+
+ OTV_LIMIT_CHECK( 2 );
+ PosFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", PosFormat ));
+
+ switch ( PosFormat )
+ {
+ case 1: /* ExtensionPosFormat1 */
+ {
+ FT_UInt ExtensionLookupType, ExtensionOffset;
+ OTV_Validate_Func validate;
+
+
+ OTV_LIMIT_CHECK( 6 );
+ ExtensionLookupType = FT_NEXT_USHORT( p );
+ ExtensionOffset = FT_NEXT_ULONG( p );
+
+ if ( ExtensionLookupType == 0 || ExtensionLookupType >= 9 )
+ FT_INVALID_DATA;
+
+ validate = valid->type_funcs[ExtensionLookupType - 1];
+ validate( table + ExtensionOffset, valid );
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static const OTV_Validate_Func otv_gpos_validate_funcs[9] =
+ {
+ otv_SinglePos_validate,
+ otv_PairPos_validate,
+ otv_CursivePos_validate,
+ otv_MarkBasePos_validate,
+ otv_MarkLigPos_validate,
+ otv_MarkMarkPos_validate,
+ otv_ContextPos_validate,
+ otv_ChainContextPos_validate,
+ otv_ExtensionPos_validate
+ };
+
+
+ /* sets valid->type_count */
+ /* sets valid->type_funcs */
+
+ FT_LOCAL_DEF( void )
+ otv_GPOS_subtable_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ valid->type_count = 9;
+ valid->type_funcs = (OTV_Validate_Func*)otv_gpos_validate_funcs;
+
+ otv_Lookup_validate( table, valid );
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GPOS TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->glyph_count */
+
+ FT_LOCAL_DEF( void )
+ otv_GPOS_validate( FT_Bytes table,
+ FT_UInt glyph_count,
+ FT_Validator ftvalid )
+ {
+ OTV_ValidatorRec validrec;
+ OTV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_UInt ScriptList, FeatureList, LookupList;
+
+
+ valid->root = ftvalid;
+
+ FT_TRACE3(( "validating GPOS table\n" ));
+ OTV_INIT;
+
+ OTV_LIMIT_CHECK( 10 );
+
+ if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
+ FT_INVALID_DATA;
+
+ ScriptList = FT_NEXT_USHORT( p );
+ FeatureList = FT_NEXT_USHORT( p );
+ LookupList = FT_NEXT_USHORT( p );
+
+ valid->type_count = 9;
+ valid->type_funcs = (OTV_Validate_Func*)otv_gpos_validate_funcs;
+ valid->glyph_count = glyph_count;
+
+ otv_LookupList_validate( table + LookupList,
+ valid );
+ otv_FeatureList_validate( table + FeatureList, table + LookupList,
+ valid );
+ otv_ScriptList_validate( table + ScriptList, table + FeatureList,
+ valid );
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvgpos.h b/src/freetype2/otvalid/otvgpos.h
new file mode 100644
index 0000000..14ca408
--- /dev/null
+++ b/src/freetype2/otvalid/otvgpos.h
@@ -0,0 +1,36 @@
+/***************************************************************************/
+/* */
+/* otvgpos.h */
+/* */
+/* OpenType GPOS table validator (specification). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __OTVGPOS_H__
+#define __OTVGPOS_H__
+
+
+FT_BEGIN_HEADER
+
+
+ FT_LOCAL( void )
+ otv_GPOS_subtable_validate( FT_Bytes table,
+ OTV_Validator valid );
+
+
+FT_END_HEADER
+
+#endif /* __OTVGPOS_H__ */
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvgsub.c b/src/freetype2/otvalid/otvgsub.c
new file mode 100644
index 0000000..91dae0b
--- /dev/null
+++ b/src/freetype2/otvalid/otvgsub.c
@@ -0,0 +1,584 @@
+/***************************************************************************/
+/* */
+/* otvgsub.c */
+/* */
+/* OpenType GSUB table validation (body). */
+/* */
+/* Copyright 2004, 2005 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvgsub
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 1 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->glyph_count */
+
+ static void
+ otv_SingleSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "SingleSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1: /* SingleSubstFormat1 */
+ {
+ FT_Bytes Coverage;
+ FT_Int DeltaGlyphID;
+ FT_Long idx;
+
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = table + FT_NEXT_USHORT( p );
+ DeltaGlyphID = FT_NEXT_SHORT( p );
+
+ otv_Coverage_validate( Coverage, valid );
+
+ idx = otv_Coverage_get_first( Coverage ) + DeltaGlyphID;
+ if ( idx < 0 )
+ FT_INVALID_DATA;
+
+ idx = otv_Coverage_get_last( Coverage ) + DeltaGlyphID;
+ if ( (FT_UInt)idx >= valid->glyph_count )
+ FT_INVALID_DATA;
+ }
+ break;
+
+ case 2: /* SingleSubstFormat2 */
+ {
+ FT_UInt Coverage, GlyphCount;
+
+
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = FT_NEXT_USHORT( p );
+ GlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+
+ otv_Coverage_validate( table + Coverage, valid );
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 );
+
+ /* Substitute */
+ for ( ; GlyphCount > 0; GlyphCount-- )
+ if ( FT_NEXT_USHORT( p ) >= valid->glyph_count )
+ FT_INVALID_DATA;
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 2 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (glyph count) */
+
+ static void
+ otv_MultipleSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "MultipleSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1:
+ valid->extra1 = valid->glyph_count;
+ OTV_NEST2( MultipleSubstFormat1, Sequence );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 3 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (glyph count) */
+
+ static void
+ otv_AlternateSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "AlternateSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1:
+ valid->extra1 = valid->glyph_count;
+ OTV_NEST2( AlternateSubstFormat1, AlternateSet );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 4 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define LigatureFunc otv_Ligature_validate
+
+ /* uses valid->glyph_count */
+
+ static void
+ otv_Ligature_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt LigatureGlyph, CompCount;
+
+
+ OTV_ENTER;
+
+ OTV_LIMIT_CHECK( 4 );
+ LigatureGlyph = FT_NEXT_USHORT( p );
+ if ( LigatureGlyph >= valid->glyph_count )
+ FT_INVALID_DATA;
+
+ CompCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (CompCount = %d)\n", CompCount ));
+
+ if ( CompCount == 0 )
+ FT_INVALID_DATA;
+
+ CompCount--;
+
+ OTV_LIMIT_CHECK( CompCount * 2 ); /* Component */
+
+ /* no need to check the Component glyph indices */
+
+ OTV_EXIT;
+ }
+
+
+ static void
+ otv_LigatureSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "LigatureSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1:
+ OTV_NEST3( LigatureSubstFormat1, LigatureSet, Ligature );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 5 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (lookup count) */
+
+ static void
+ otv_ContextSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "ContextSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ valid->extra1 = valid->lookup_count;
+ OTV_NEST3( ContextSubstFormat1, SubRuleSet, SubRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 2:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ OTV_NEST3( ContextSubstFormat2, SubClassSet, SubClassRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 3:
+ OTV_NEST1( ContextSubstFormat3 );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 6 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->extra1 (lookup count) */
+
+ static void
+ otv_ChainContextSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "ChainContextSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ valid->extra1 = valid->lookup_count;
+ OTV_NEST3( ChainContextSubstFormat1,
+ ChainSubRuleSet, ChainSubRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 2:
+ /* no need to check glyph indices/classes used as input for these */
+ /* context rules since even invalid glyph indices/classes return */
+ /* meaningful results */
+
+ OTV_NEST3( ChainContextSubstFormat2,
+ ChainSubClassSet, ChainSubClassRule );
+ OTV_RUN( table, valid );
+ break;
+
+ case 3:
+ OTV_NEST1( ChainContextSubstFormat3 );
+ OTV_RUN( table, valid );
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 7 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->type_funcs */
+
+ static void
+ otv_ExtensionSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt SubstFormat;
+
+
+ OTV_NAME_ENTER( "ExtensionSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1: /* ExtensionSubstFormat1 */
+ {
+ FT_UInt ExtensionLookupType, ExtensionOffset;
+ OTV_Validate_Func validate;
+
+
+ OTV_LIMIT_CHECK( 6 );
+ ExtensionLookupType = FT_NEXT_USHORT( p );
+ ExtensionOffset = FT_NEXT_ULONG( p );
+
+ if ( ExtensionLookupType == 0 ||
+ ExtensionLookupType == 7 ||
+ ExtensionLookupType > 8 )
+ FT_INVALID_DATA;
+
+ validate = valid->type_funcs[ExtensionLookupType - 1];
+ validate( table + ExtensionOffset, valid );
+ }
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB LOOKUP TYPE 8 *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* uses valid->glyph_count */
+
+ static void
+ otv_ReverseChainSingleSubst_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table, Coverage;
+ FT_UInt SubstFormat;
+ FT_UInt BacktrackGlyphCount, LookaheadGlyphCount, GlyphCount;
+
+
+ OTV_NAME_ENTER( "ReverseChainSingleSubst" );
+
+ OTV_LIMIT_CHECK( 2 );
+ SubstFormat = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (format %d)\n", SubstFormat ));
+
+ switch ( SubstFormat )
+ {
+ case 1: /* ReverseChainSingleSubstFormat1 */
+ OTV_LIMIT_CHECK( 4 );
+ Coverage = table + FT_NEXT_USHORT( p );
+ BacktrackGlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (BacktrackGlyphCount = %d)\n", BacktrackGlyphCount ));
+
+ otv_Coverage_validate( Coverage, valid );
+
+ OTV_LIMIT_CHECK( BacktrackGlyphCount * 2 + 2 );
+
+ for ( ; BacktrackGlyphCount > 0; BacktrackGlyphCount-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ LookaheadGlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (LookaheadGlyphCount = %d)\n", LookaheadGlyphCount ));
+
+ OTV_LIMIT_CHECK( LookaheadGlyphCount * 2 + 2 );
+
+ for ( ; LookaheadGlyphCount > 0; LookaheadGlyphCount-- )
+ otv_Coverage_validate( table + FT_NEXT_USHORT( p ), valid );
+
+ GlyphCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (GlyphCount = %d)\n", GlyphCount ));
+
+ if ( GlyphCount != otv_Coverage_get_count( Coverage ) )
+ FT_INVALID_DATA;
+
+ OTV_LIMIT_CHECK( GlyphCount * 2 );
+
+ /* Substitute */
+ for ( ; GlyphCount > 0; GlyphCount-- )
+ if ( FT_NEXT_USHORT( p ) >= valid->glyph_count )
+ FT_INVALID_DATA;
+
+ break;
+
+ default:
+ FT_INVALID_DATA;
+ }
+
+ OTV_EXIT;
+ }
+
+
+ static const OTV_Validate_Func otv_gsub_validate_funcs[8] =
+ {
+ otv_SingleSubst_validate,
+ otv_MultipleSubst_validate,
+ otv_AlternateSubst_validate,
+ otv_LigatureSubst_validate,
+ otv_ContextSubst_validate,
+ otv_ChainContextSubst_validate,
+ otv_ExtensionSubst_validate,
+ otv_ReverseChainSingleSubst_validate
+ };
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** GSUB TABLE *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /* sets valid->type_count */
+ /* sets valid->type_funcs */
+ /* sets valid->glyph_count */
+
+ FT_LOCAL_DEF( void )
+ otv_GSUB_validate( FT_Bytes table,
+ FT_UInt glyph_count,
+ FT_Validator ftvalid )
+ {
+ OTV_ValidatorRec validrec;
+ OTV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_UInt ScriptList, FeatureList, LookupList;
+
+
+ valid->root = ftvalid;
+
+ FT_TRACE3(( "validating GSUB table\n" ));
+ OTV_INIT;
+
+ OTV_LIMIT_CHECK( 10 );
+
+ if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
+ FT_INVALID_DATA;
+
+ ScriptList = FT_NEXT_USHORT( p );
+ FeatureList = FT_NEXT_USHORT( p );
+ LookupList = FT_NEXT_USHORT( p );
+
+ valid->type_count = 8;
+ valid->type_funcs = (OTV_Validate_Func*)otv_gsub_validate_funcs;
+ valid->glyph_count = glyph_count;
+
+ otv_LookupList_validate( table + LookupList,
+ valid );
+ otv_FeatureList_validate( table + FeatureList, table + LookupList,
+ valid );
+ otv_ScriptList_validate( table + ScriptList, table + FeatureList,
+ valid );
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvjstf.c b/src/freetype2/otvalid/otvjstf.c
new file mode 100644
index 0000000..80b8dd6
--- /dev/null
+++ b/src/freetype2/otvalid/otvjstf.c
@@ -0,0 +1,258 @@
+/***************************************************************************/
+/* */
+/* otvjstf.c */
+/* */
+/* OpenType JSTF table validation (body). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.h"
+#include "otvgpos.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvjstf
+
+
+#define JstfPriorityFunc otv_JstfPriority_validate
+#define JstfLookupFunc otv_GPOS_subtable_validate
+
+ /* uses valid->extra1 (GSUB lookup count) */
+ /* uses valid->extra2 (GPOS lookup count) */
+ /* sets valid->extra1 (counter) */
+
+ static void
+ otv_JstfPriority_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt table_size;
+ FT_UInt gsub_lookup_count, gpos_lookup_count;
+
+ OTV_OPTIONAL_TABLE( ShrinkageEnableGSUB );
+ OTV_OPTIONAL_TABLE( ShrinkageDisableGSUB );
+ OTV_OPTIONAL_TABLE( ShrinkageEnableGPOS );
+ OTV_OPTIONAL_TABLE( ShrinkageDisableGPOS );
+ OTV_OPTIONAL_TABLE( ExtensionEnableGSUB );
+ OTV_OPTIONAL_TABLE( ExtensionDisableGSUB );
+ OTV_OPTIONAL_TABLE( ExtensionEnableGPOS );
+ OTV_OPTIONAL_TABLE( ExtensionDisableGPOS );
+ OTV_OPTIONAL_TABLE( ShrinkageJstfMax );
+ OTV_OPTIONAL_TABLE( ExtensionJstfMax );
+
+
+ OTV_ENTER;
+ OTV_TRACE(( "JstfPriority table\n" ));
+
+ OTV_LIMIT_CHECK( 20 );
+
+ gsub_lookup_count = valid->extra1;
+ gpos_lookup_count = valid->extra2;
+
+ table_size = 20;
+
+ valid->extra1 = gsub_lookup_count;
+
+ OTV_OPTIONAL_OFFSET( ShrinkageEnableGSUB );
+ OTV_SIZE_CHECK( ShrinkageEnableGSUB );
+ if ( ShrinkageEnableGSUB )
+ otv_x_ux( table + ShrinkageEnableGSUB, valid );
+
+ OTV_OPTIONAL_OFFSET( ShrinkageDisableGSUB );
+ OTV_SIZE_CHECK( ShrinkageDisableGSUB );
+ if ( ShrinkageDisableGSUB )
+ otv_x_ux( table + ShrinkageDisableGSUB, valid );
+
+ valid->extra1 = gpos_lookup_count;
+
+ OTV_OPTIONAL_OFFSET( ShrinkageEnableGPOS );
+ OTV_SIZE_CHECK( ShrinkageEnableGPOS );
+ if ( ShrinkageEnableGPOS )
+ otv_x_ux( table + ShrinkageEnableGPOS, valid );
+
+ OTV_OPTIONAL_OFFSET( ShrinkageDisableGPOS );
+ OTV_SIZE_CHECK( ShrinkageDisableGPOS );
+ if ( ShrinkageDisableGPOS )
+ otv_x_ux( table + ShrinkageDisableGPOS, valid );
+
+ OTV_OPTIONAL_OFFSET( ShrinkageJstfMax );
+ OTV_SIZE_CHECK( ShrinkageJstfMax );
+ if ( ShrinkageJstfMax )
+ {
+ /* XXX: check lookup types? */
+ OTV_NEST2( JstfMax, JstfLookup );
+ OTV_RUN( table + ShrinkageJstfMax, valid );
+ }
+
+ valid->extra1 = gsub_lookup_count;
+
+ OTV_OPTIONAL_OFFSET( ExtensionEnableGSUB );
+ OTV_SIZE_CHECK( ExtensionEnableGSUB );
+ if ( ExtensionEnableGSUB )
+ otv_x_ux( table + ExtensionEnableGSUB, valid );
+
+ OTV_OPTIONAL_OFFSET( ExtensionDisableGSUB );
+ OTV_SIZE_CHECK( ExtensionDisableGSUB );
+ if ( ExtensionDisableGSUB )
+ otv_x_ux( table + ExtensionDisableGSUB, valid );
+
+ valid->extra1 = gpos_lookup_count;
+
+ OTV_OPTIONAL_OFFSET( ExtensionEnableGPOS );
+ OTV_SIZE_CHECK( ExtensionEnableGPOS );
+ if ( ExtensionEnableGPOS )
+ otv_x_ux( table + ExtensionEnableGPOS, valid );
+
+ OTV_OPTIONAL_OFFSET( ExtensionDisableGPOS );
+ OTV_SIZE_CHECK( ExtensionDisableGPOS );
+ if ( ExtensionDisableGPOS )
+ otv_x_ux( table + ExtensionDisableGPOS, valid );
+
+ OTV_OPTIONAL_OFFSET( ExtensionJstfMax );
+ OTV_SIZE_CHECK( ExtensionJstfMax );
+ if ( ExtensionJstfMax )
+ {
+ /* XXX: check lookup types? */
+ OTV_NEST2( JstfMax, JstfLookup );
+ OTV_RUN( table + ExtensionJstfMax, valid );
+ }
+
+ valid->extra1 = gsub_lookup_count;
+ valid->extra2 = gpos_lookup_count;
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra (glyph count) */
+ /* sets valid->func1 (otv_JstfPriority_validate) */
+
+ static void
+ otv_JstfScript_validate( FT_Bytes table,
+ OTV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt table_size;
+ FT_UInt JstfLangSysCount;
+
+ OTV_OPTIONAL_TABLE( ExtGlyph );
+ OTV_OPTIONAL_TABLE( DefJstfLangSys );
+
+
+ OTV_NAME_ENTER( "JstfScript" );
+
+ OTV_LIMIT_CHECK( 6 );
+ OTV_OPTIONAL_OFFSET( ExtGlyph );
+ OTV_OPTIONAL_OFFSET( DefJstfLangSys );
+ JstfLangSysCount = FT_NEXT_USHORT( p );
+
+ OTV_TRACE(( " (JstfLangSysCount = %d)\n", JstfLangSysCount ));
+
+ table_size = JstfLangSysCount * 6 + 6;
+
+ OTV_SIZE_CHECK( ExtGlyph );
+ if ( ExtGlyph )
+ {
+ valid->extra1 = valid->glyph_count;
+ OTV_NEST1( ExtenderGlyph );
+ OTV_RUN( table + ExtGlyph, valid );
+ }
+
+ OTV_SIZE_CHECK( DefJstfLangSys );
+ if ( DefJstfLangSys )
+ {
+ OTV_NEST2( JstfLangSys, JstfPriority );
+ OTV_RUN( table + DefJstfLangSys, valid );
+ }
+
+ OTV_LIMIT_CHECK( 6 * JstfLangSysCount );
+
+ /* JstfLangSysRecord */
+ OTV_NEST2( JstfLangSys, JstfPriority );
+ for ( ; JstfLangSysCount > 0; JstfLangSysCount-- )
+ {
+ p += 4; /* skip JstfLangSysTag */
+
+ OTV_RUN( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ OTV_EXIT;
+ }
+
+
+ /* sets valid->extra1 (GSUB lookup count) */
+ /* sets valid->extra2 (GPOS lookup count) */
+ /* sets valid->glyph_count */
+
+ FT_LOCAL_DEF( void )
+ otv_JSTF_validate( FT_Bytes table,
+ FT_Bytes gsub,
+ FT_Bytes gpos,
+ FT_UInt glyph_count,
+ FT_Validator ftvalid )
+ {
+ OTV_ValidatorRec validrec;
+ OTV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_UInt JstfScriptCount;
+
+
+ valid->root = ftvalid;
+
+ FT_TRACE3(( "validating JSTF table\n" ));
+ OTV_INIT;
+
+ OTV_LIMIT_CHECK( 6 );
+
+ if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
+ FT_INVALID_DATA;
+
+ JstfScriptCount = FT_NEXT_USHORT( p );
+
+ FT_TRACE3(( " (JstfScriptCount = %d)\n", JstfScriptCount ));
+
+ OTV_LIMIT_CHECK( JstfScriptCount * 6 );
+
+ if ( gsub )
+ valid->extra1 = otv_GSUBGPOS_get_Lookup_count( gsub );
+ else
+ valid->extra1 = 0;
+
+ if ( gpos )
+ valid->extra2 = otv_GSUBGPOS_get_Lookup_count( gpos );
+ else
+ valid->extra2 = 0;
+
+ valid->glyph_count = glyph_count;
+
+ /* JstfScriptRecord */
+ for ( ; JstfScriptCount > 0; JstfScriptCount-- )
+ {
+ p += 4; /* skip JstfScriptTag */
+
+ /* JstfScript */
+ otv_JstfScript_validate( table + FT_NEXT_USHORT( p ), valid );
+ }
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvmod.c b/src/freetype2/otvalid/otvmod.c
new file mode 100644
index 0000000..157272f
--- /dev/null
+++ b/src/freetype2/otvalid/otvmod.c
@@ -0,0 +1,242 @@
+/***************************************************************************/
+/* */
+/* otvmod.c */
+/* */
+/* FreeType's OpenType validation module implementation (body). */
+/* */
+/* Copyright 2004, 2005, 2006 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_TRUETYPE_TABLES_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_OPENTYPE_VALIDATE_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_SERVICE_OPENTYPE_VALIDATE_H
+
+#include "otvmod.h"
+#include "otvalid.h"
+#include "otvcommn.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_otvmodule
+
+
+ static FT_Error
+ otv_load_table( FT_Face face,
+ FT_Tag tag,
+ FT_Byte* volatile* table,
+ FT_ULong* table_len )
+ {
+ FT_Error error;
+ FT_Memory memory = FT_FACE_MEMORY( face );
+
+
+ error = FT_Load_Sfnt_Table( face, tag, 0, NULL, table_len );
+ if ( error == OTV_Err_Table_Missing )
+ return OTV_Err_Ok;
+ if ( error )
+ goto Exit;
+
+ if ( FT_ALLOC( *table, *table_len ) )
+ goto Exit;
+
+ error = FT_Load_Sfnt_Table( face, tag, 0, *table, table_len );
+
+ Exit:
+ return error;
+ }
+
+
+ static FT_Error
+ otv_validate( FT_Face volatile face,
+ FT_UInt ot_flags,
+ FT_Bytes *ot_base,
+ FT_Bytes *ot_gdef,
+ FT_Bytes *ot_gpos,
+ FT_Bytes *ot_gsub,
+ FT_Bytes *ot_jstf )
+ {
+ FT_Error error = OTV_Err_Ok;
+ FT_Byte* volatile base;
+ FT_Byte* volatile gdef;
+ FT_Byte* volatile gpos;
+ FT_Byte* volatile gsub;
+ FT_Byte* volatile jstf;
+ FT_ULong len_base, len_gdef, len_gpos, len_gsub, len_jstf;
+ FT_ValidatorRec volatile valid;
+
+
+ base = gdef = gpos = gsub = jstf = NULL;
+ len_base = len_gdef = len_gpos = len_gsub = len_jstf = 0;
+
+ /* load tables */
+
+ if ( ot_flags & FT_VALIDATE_BASE )
+ {
+ error = otv_load_table( face, TTAG_BASE, &base, &len_base );
+ if ( error )
+ goto Exit;
+ }
+
+ if ( ot_flags & FT_VALIDATE_GDEF )
+ {
+ error = otv_load_table( face, TTAG_GDEF, &gdef, &len_gdef );
+ if ( error )
+ goto Exit;
+ }
+
+ if ( ot_flags & FT_VALIDATE_GPOS )
+ {
+ error = otv_load_table( face, TTAG_GPOS, &gpos, &len_gpos );
+ if ( error )
+ goto Exit;
+ }
+
+ if ( ot_flags & FT_VALIDATE_GSUB )
+ {
+ error = otv_load_table( face, TTAG_GSUB, &gsub, &len_gsub );
+ if ( error )
+ goto Exit;
+ }
+
+ if ( ot_flags & FT_VALIDATE_JSTF )
+ {
+ error = otv_load_table( face, TTAG_JSTF, &jstf, &len_jstf );
+ if ( error )
+ goto Exit;
+ }
+
+ /* validate tables */
+
+ if ( base )
+ {
+ ft_validator_init( &valid, base, base + len_base, FT_VALIDATE_DEFAULT );
+ if ( ft_setjmp( valid.jump_buffer ) == 0 )
+ otv_BASE_validate( base, &valid );
+ error = valid.error;
+ if ( error )
+ goto Exit;
+ }
+
+ if ( gpos )
+ {
+ ft_validator_init( &valid, gpos, gpos + len_gpos, FT_VALIDATE_DEFAULT );
+ if ( ft_setjmp( valid.jump_buffer ) == 0 )
+ otv_GPOS_validate( gpos, face->num_glyphs, &valid );
+ error = valid.error;
+ if ( error )
+ goto Exit;
+ }
+
+ if ( gsub )
+ {
+ ft_validator_init( &valid, gsub, gsub + len_gsub, FT_VALIDATE_DEFAULT );
+ if ( ft_setjmp( valid.jump_buffer ) == 0 )
+ otv_GSUB_validate( gsub, face->num_glyphs, &valid );
+ error = valid.error;
+ if ( error )
+ goto Exit;
+ }
+
+ if ( gdef )
+ {
+ ft_validator_init( &valid, gdef, gdef + len_gdef, FT_VALIDATE_DEFAULT );
+ if ( ft_setjmp( valid.jump_buffer ) == 0 )
+ otv_GDEF_validate( gdef, gsub, gpos, &valid );
+ error = valid.error;
+ if ( error )
+ goto Exit;
+ }
+
+ if ( jstf )
+ {
+ ft_validator_init( &valid, jstf, jstf + len_jstf, FT_VALIDATE_DEFAULT );
+ if ( ft_setjmp( valid.jump_buffer ) == 0 )
+ otv_JSTF_validate( jstf, gsub, gpos, face->num_glyphs, &valid );
+ error = valid.error;
+ if ( error )
+ goto Exit;
+ }
+
+ *ot_base = (FT_Bytes)base;
+ *ot_gdef = (FT_Bytes)gdef;
+ *ot_gpos = (FT_Bytes)gpos;
+ *ot_gsub = (FT_Bytes)gsub;
+ *ot_jstf = (FT_Bytes)jstf;
+
+ Exit:
+ if ( error ) {
+ FT_Memory memory = FT_FACE_MEMORY( face );
+
+
+ FT_FREE( base );
+ FT_FREE( gdef );
+ FT_FREE( gpos );
+ FT_FREE( gsub );
+ FT_FREE( jstf );
+ }
+
+ return error;
+ }
+
+
+ static
+ const FT_Service_OTvalidateRec otvalid_interface =
+ {
+ otv_validate
+ };
+
+
+ static
+ const FT_ServiceDescRec otvalid_services[] =
+ {
+ { FT_SERVICE_ID_OPENTYPE_VALIDATE, &otvalid_interface },
+ { NULL, NULL }
+ };
+
+
+ static FT_Pointer
+ otvalid_get_service( FT_Module module,
+ const char* service_id )
+ {
+ FT_UNUSED( module );
+
+ return ft_service_list_lookup( otvalid_services, service_id );
+ }
+
+
+ FT_CALLBACK_TABLE_DEF
+ const FT_Module_Class otv_module_class =
+ {
+ 0,
+ sizeof( FT_ModuleRec ),
+ "otvalid",
+ 0x10000L,
+ 0x20000L,
+
+ 0, /* module-specific interface */
+
+ (FT_Module_Constructor)0,
+ (FT_Module_Destructor) 0,
+ (FT_Module_Requester) otvalid_get_service
+ };
+
+
+/* END */
diff --git a/src/freetype2/otvalid/otvmod.h b/src/freetype2/otvalid/otvmod.h
new file mode 100644
index 0000000..1bfc189
--- /dev/null
+++ b/src/freetype2/otvalid/otvmod.h
@@ -0,0 +1,39 @@
+/***************************************************************************/
+/* */
+/* otvmod.h */
+/* */
+/* FreeType's OpenType validation module implementation */
+/* (specification). */
+/* */
+/* Copyright 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __OTVMOD_H__
+#define __OTVMOD_H__
+
+
+#include <ft2build.h>
+#include FT_MODULE_H
+
+
+FT_BEGIN_HEADER
+
+
+ FT_EXPORT_VAR( const FT_Module_Class ) otv_module_class;
+
+
+FT_END_HEADER
+
+#endif /* __OTVMOD_H__ */
+
+
+/* END */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 17:54:34 +0000