--- a/misc/libfreetype/src/gxvalid/gxvtrak.c Fri Oct 11 11:55:31 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,277 +0,0 @@
-/***************************************************************************/
-/* */
-/* gxvtrak.c */
-/* */
-/* TrueTypeGX/AAT trak table validation (body). */
-/* */
-/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
-/* 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. */
-/* */
-/***************************************************************************/
-
-/***************************************************************************/
-/* */
-/* gxvalid is derived from both gxlayout module and otvalid module. */
-/* Development of gxlayout is supported by the Information-technology */
-/* Promotion Agency(IPA), Japan. */
-/* */
-/***************************************************************************/
-
-
-#include "gxvalid.h"
-#include "gxvcommn.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_gxvtrak
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** Data and Types *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- /*
- * referred track table format specification:
- * http://developer.apple.com/fonts/TTRefMan/RM06/Chap6trak.html
- * last update was 1996.
- * ----------------------------------------------
- * [MINIMUM HEADER]: GXV_TRAK_SIZE_MIN
- * version (fixed: 32bit) = 0x00010000
- * format (uint16: 16bit) = 0 is only defined (1996)
- * horizOffset (uint16: 16bit)
- * vertOffset (uint16: 16bit)
- * reserved (uint16: 16bit) = 0
- * ----------------------------------------------
- * [VARIABLE BODY]:
- * horizData
- * header ( 2 + 2 + 4
- * trackTable + nTracks * ( 4 + 2 + 2 )
- * sizeTable + nSizes * 4 )
- * ----------------------------------------------
- * vertData
- * header ( 2 + 2 + 4
- * trackTable + nTracks * ( 4 + 2 + 2 )
- * sizeTable + nSizes * 4 )
- * ----------------------------------------------
- */
- typedef struct GXV_trak_DataRec_
- {
- FT_UShort trackValueOffset_min;
- FT_UShort trackValueOffset_max;
-
- } GXV_trak_DataRec, *GXV_trak_Data;
-
-
-#define GXV_TRAK_DATA( FIELD ) GXV_TABLE_DATA( trak, FIELD )
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** UTILITY FUNCTIONS *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- static void
- gxv_trak_trackTable_validate( FT_Bytes table,
- FT_Bytes limit,
- FT_UShort nTracks,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
-
- FT_Fixed track;
- FT_UShort nameIndex;
- FT_UShort offset;
- FT_UShort i;
-
-
- GXV_NAME_ENTER( "trackTable" );
-
- GXV_TRAK_DATA( trackValueOffset_min ) = 0xFFFFU;
- GXV_TRAK_DATA( trackValueOffset_max ) = 0x0000;
-
- for ( i = 0; i < nTracks; i ++ )
- {
- GXV_LIMIT_CHECK( 4 + 2 + 2 );
- track = FT_NEXT_LONG( p );
- nameIndex = FT_NEXT_USHORT( p );
- offset = FT_NEXT_USHORT( p );
-
- if ( offset < GXV_TRAK_DATA( trackValueOffset_min ) )
- GXV_TRAK_DATA( trackValueOffset_min ) = offset;
- if ( offset > GXV_TRAK_DATA( trackValueOffset_max ) )
- GXV_TRAK_DATA( trackValueOffset_max ) = offset;
-
- gxv_sfntName_validate( nameIndex, 256, 32767, valid );
- }
-
- valid->subtable_length = p - table;
- GXV_EXIT;
- }
-
-
- static void
- gxv_trak_trackData_validate( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
- FT_UShort nTracks;
- FT_UShort nSizes;
- FT_ULong sizeTableOffset;
-
- GXV_ODTECT( 4, odtect );
-
-
- GXV_ODTECT_INIT( odtect );
- GXV_NAME_ENTER( "trackData" );
-
- /* read the header of trackData */
- GXV_LIMIT_CHECK( 2 + 2 + 4 );
- nTracks = FT_NEXT_USHORT( p );
- nSizes = FT_NEXT_USHORT( p );
- sizeTableOffset = FT_NEXT_ULONG( p );
-
- gxv_odtect_add_range( table, p - table, "trackData header", odtect );
-
- /* validate trackTable */
- gxv_trak_trackTable_validate( p, limit, nTracks, valid );
- gxv_odtect_add_range( p, valid->subtable_length,
- "trackTable", odtect );
-
- /* sizeTable is array of FT_Fixed, don't check contents */
- p = valid->root->base + sizeTableOffset;
- GXV_LIMIT_CHECK( nSizes * 4 );
- gxv_odtect_add_range( p, nSizes * 4, "sizeTable", odtect );
-
- /* validate trackValueOffet */
- p = valid->root->base + GXV_TRAK_DATA( trackValueOffset_min );
- if ( limit - p < nTracks * nSizes * 2 )
- GXV_TRACE(( "too short trackValue array\n" ));
-
- p = valid->root->base + GXV_TRAK_DATA( trackValueOffset_max );
- GXV_LIMIT_CHECK( nSizes * 2 );
-
- gxv_odtect_add_range( valid->root->base
- + GXV_TRAK_DATA( trackValueOffset_min ),
- GXV_TRAK_DATA( trackValueOffset_max )
- - GXV_TRAK_DATA( trackValueOffset_min )
- + nSizes * 2,
- "trackValue array", odtect );
-
- gxv_odtect_validate( odtect, valid );
-
- GXV_EXIT;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** trak TABLE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( void )
- gxv_trak_validate( FT_Bytes table,
- FT_Face face,
- FT_Validator ftvalid )
- {
- FT_Bytes p = table;
- FT_Bytes limit = 0;
- FT_Offset table_size;
-
- GXV_ValidatorRec validrec;
- GXV_Validator valid = &validrec;
- GXV_trak_DataRec trakrec;
- GXV_trak_Data trak = &trakrec;
-
- FT_ULong version;
- FT_UShort format;
- FT_UShort horizOffset;
- FT_UShort vertOffset;
- FT_UShort reserved;
-
-
- GXV_ODTECT( 3, odtect );
-
- GXV_ODTECT_INIT( odtect );
- valid->root = ftvalid;
- valid->table_data = trak;
- valid->face = face;
-
- limit = valid->root->limit;
- table_size = limit - table;
-
- FT_TRACE3(( "validating `trak' table\n" ));
- GXV_INIT;
-
- GXV_LIMIT_CHECK( 4 + 2 + 2 + 2 + 2 );
- version = FT_NEXT_ULONG( p );
- format = FT_NEXT_USHORT( p );
- horizOffset = FT_NEXT_USHORT( p );
- vertOffset = FT_NEXT_USHORT( p );
- reserved = FT_NEXT_USHORT( p );
-
- GXV_TRACE(( " (version = 0x%08x)\n", version ));
- GXV_TRACE(( " (format = 0x%04x)\n", format ));
- GXV_TRACE(( " (horizOffset = 0x%04x)\n", horizOffset ));
- GXV_TRACE(( " (vertOffset = 0x%04x)\n", vertOffset ));
- GXV_TRACE(( " (reserved = 0x%04x)\n", reserved ));
-
- /* Version 1.0 (always:1996) */
- if ( version != 0x00010000UL )
- FT_INVALID_FORMAT;
-
- /* format 0 (always:1996) */
- if ( format != 0x0000 )
- FT_INVALID_FORMAT;
-
- GXV_32BIT_ALIGNMENT_VALIDATE( horizOffset );
- GXV_32BIT_ALIGNMENT_VALIDATE( vertOffset );
-
- /* Reserved Fixed Value (always) */
- if ( reserved != 0x0000 )
- FT_INVALID_DATA;
-
- /* validate trackData */
- if ( 0 < horizOffset )
- {
- gxv_trak_trackData_validate( table + horizOffset, limit, valid );
- gxv_odtect_add_range( table + horizOffset, valid->subtable_length,
- "horizJustData", odtect );
- }
-
- if ( 0 < vertOffset )
- {
- gxv_trak_trackData_validate( table + vertOffset, limit, valid );
- gxv_odtect_add_range( table + vertOffset, valid->subtable_length,
- "vertJustData", odtect );
- }
-
- gxv_odtect_validate( odtect, valid );
-
- FT_TRACE4(( "\n" ));
- }
-
-
-/* END */