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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /freetype/src/gxvalid/gxvtrak.c | |
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Checked in the following released items:
xkeyboard-config-1.4.tar.gz
ttf-bitstream-vera-1.10.tar.gz
font-alias-1.0.1.tar.gz
font-sun-misc-1.0.0.tar.gz
font-sun-misc-1.0.0.tar.gz
font-sony-misc-1.0.0.tar.gz
font-schumacher-misc-1.0.0.tar.gz
font-mutt-misc-1.0.0.tar.gz
font-misc-misc-1.0.0.tar.gz
font-misc-meltho-1.0.0.tar.gz
font-micro-misc-1.0.0.tar.gz
font-jis-misc-1.0.0.tar.gz
font-isas-misc-1.0.0.tar.gz
font-dec-misc-1.0.0.tar.gz
font-daewoo-misc-1.0.0.tar.gz
font-cursor-misc-1.0.0.tar.gz
font-arabic-misc-1.0.0.tar.gz
font-winitzki-cyrillic-1.0.0.tar.gz
font-misc-cyrillic-1.0.0.tar.gz
font-cronyx-cyrillic-1.0.0.tar.gz
font-screen-cyrillic-1.0.1.tar.gz
font-xfree86-type1-1.0.1.tar.gz
font-adobe-utopia-type1-1.0.1.tar.gz
font-ibm-type1-1.0.0.tar.gz
font-bitstream-type1-1.0.0.tar.gz
font-bitstream-speedo-1.0.0.tar.gz
font-bh-ttf-1.0.0.tar.gz
font-bh-type1-1.0.0.tar.gz
font-bitstream-100dpi-1.0.0.tar.gz
font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz
font-bh-100dpi-1.0.0.tar.gz
font-adobe-utopia-100dpi-1.0.1.tar.gz
font-adobe-100dpi-1.0.0.tar.gz
font-util-1.0.1.tar.gz
font-bitstream-75dpi-1.0.0.tar.gz
font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz
font-adobe-utopia-75dpi-1.0.1.tar.gz
font-bh-75dpi-1.0.0.tar.gz
bdftopcf-1.0.1.tar.gz
font-adobe-75dpi-1.0.0.tar.gz
mkfontscale-1.0.6.tar.gz
openssl-0.9.8k.tar.gz
bigreqsproto-1.0.2.tar.gz
xtrans-1.2.2.tar.gz
resourceproto-1.0.2.tar.gz
inputproto-1.4.4.tar.gz
compositeproto-0.4.tar.gz
damageproto-1.1.0.tar.gz
zlib-1.2.3.tar.gz
xkbcomp-1.0.5.tar.gz
freetype-2.3.9.tar.gz
pthreads-w32-2-8-0-release.tar.gz
pixman-0.12.0.tar.gz
kbproto-1.0.3.tar.gz
evieext-1.0.2.tar.gz
fixesproto-4.0.tar.gz
recordproto-1.13.2.tar.gz
randrproto-1.2.2.tar.gz
scrnsaverproto-1.1.0.tar.gz
renderproto-0.9.3.tar.gz
xcmiscproto-1.1.2.tar.gz
fontsproto-2.0.2.tar.gz
xextproto-7.0.3.tar.gz
xproto-7.0.14.tar.gz
libXdmcp-1.0.2.tar.gz
libxkbfile-1.0.5.tar.gz
libfontenc-1.0.4.tar.gz
libXfont-1.3.4.tar.gz
libX11-1.1.5.tar.gz
libXau-1.0.4.tar.gz
libxcb-1.1.tar.gz
xorg-server-1.5.3.tar.gz
Diffstat (limited to 'freetype/src/gxvalid/gxvtrak.c')
-rw-r--r-- | freetype/src/gxvalid/gxvtrak.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/freetype/src/gxvalid/gxvtrak.c b/freetype/src/gxvalid/gxvtrak.c new file mode 100644 index 000000000..432ee4e27 --- /dev/null +++ b/freetype/src/gxvalid/gxvtrak.c @@ -0,0 +1,277 @@ +/***************************************************************************/ +/* */ +/* 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_UInt 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 */ |