aboutsummaryrefslogtreecommitdiff
path: root/freetype/src/gxvalid/gxvmort.c
diff options
context:
space:
mode:
authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /freetype/src/gxvalid/gxvmort.c
downloadvcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.gz
vcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.bz2
vcxsrv-3562e78743202e43aec8727005182a2558117eca.zip
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/gxvmort.c')
-rw-r--r--freetype/src/gxvalid/gxvmort.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/freetype/src/gxvalid/gxvmort.c b/freetype/src/gxvalid/gxvmort.c
new file mode 100644
index 000000000..f4fbd30e4
--- /dev/null
+++ b/freetype/src/gxvalid/gxvmort.c
@@ -0,0 +1,285 @@
+/***************************************************************************/
+/* */
+/* gxvmort.c */
+/* */
+/* TrueTypeGX/AAT mort table validation (body). */
+/* */
+/* Copyright 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 "gxvmort.h"
+#include "gxvfeat.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_gxvmort
+
+
+ static void
+ gxv_mort_feature_validate( GXV_mort_feature f,
+ GXV_Validator valid )
+ {
+ if ( f->featureType >= gxv_feat_registry_length )
+ {
+ GXV_TRACE(( "featureType %d is out of registered range, "
+ "setting %d is unchecked\n",
+ f->featureType, f->featureSetting ));
+ if ( valid->root->level >= FT_VALIDATE_PARANOID )
+ FT_INVALID_DATA;
+ }
+ else if ( !gxv_feat_registry[f->featureType].existence )
+ {
+ GXV_TRACE(( "featureType %d is within registered area "
+ "but undefined, setting %d is unchecked\n",
+ f->featureType, f->featureSetting ));
+ if ( valid->root->level >= FT_VALIDATE_PARANOID )
+ FT_INVALID_DATA;
+ }
+ else
+ {
+ FT_Byte nSettings_max;
+
+
+ /* nSettings in gxvfeat.c is halved for exclusive on/off settings */
+ nSettings_max = gxv_feat_registry[f->featureType].nSettings;
+ if ( gxv_feat_registry[f->featureType].exclusive )
+ nSettings_max = (FT_Byte)( 2 * nSettings_max );
+
+ GXV_TRACE(( "featureType %d is registered", f->featureType ));
+ GXV_TRACE(( "setting %d", f->featureSetting ));
+
+ if ( f->featureSetting > nSettings_max )
+ {
+ GXV_TRACE(( "out of defined range %d", nSettings_max ));
+ if ( valid->root->level >= FT_VALIDATE_PARANOID )
+ FT_INVALID_DATA;
+ }
+ GXV_TRACE(( "\n" ));
+ }
+
+ /* TODO: enableFlags must be unique value in specified chain? */
+ }
+
+
+ /*
+ * nFeatureFlags is typed to FT_UInt to accept that in
+ * mort (typed FT_UShort) and morx (typed FT_ULong).
+ */
+ FT_LOCAL_DEF( void )
+ gxv_mort_featurearray_validate( FT_Bytes table,
+ FT_Bytes limit,
+ FT_UInt nFeatureFlags,
+ GXV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_UInt i;
+
+ GXV_mort_featureRec f = GXV_MORT_FEATURE_OFF;
+
+
+ GXV_NAME_ENTER( "mort feature list" );
+ for ( i = 0; i < nFeatureFlags; i++ )
+ {
+ GXV_LIMIT_CHECK( 2 + 2 + 4 + 4 );
+ f.featureType = FT_NEXT_USHORT( p );
+ f.featureSetting = FT_NEXT_USHORT( p );
+ f.enableFlags = FT_NEXT_ULONG( p );
+ f.disableFlags = FT_NEXT_ULONG( p );
+
+ gxv_mort_feature_validate( &f, valid );
+ }
+
+ if ( !IS_GXV_MORT_FEATURE_OFF( f ) )
+ FT_INVALID_DATA;
+
+ valid->subtable_length = p - table;
+ GXV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ gxv_mort_coverage_validate( FT_UShort coverage,
+ GXV_Validator valid )
+ {
+ FT_UNUSED( valid );
+
+ if ( coverage & 0x8000U )
+ GXV_TRACE(( " this subtable is for vertical text only\n" ));
+ else
+ GXV_TRACE(( " this subtable is for horizontal text only\n" ));
+
+ if ( coverage & 0x4000 )
+ GXV_TRACE(( " this subtable is applied to glyph array "
+ "in descending order\n" ));
+ else
+ GXV_TRACE(( " this subtable is applied to glyph array "
+ "in ascending order\n" ));
+
+ if ( coverage & 0x2000 )
+ GXV_TRACE(( " this subtable is forcibly applied to "
+ "vertical/horizontal text\n" ));
+
+ if ( coverage & 0x1FF8 )
+ GXV_TRACE(( " coverage has non-zero bits in reserved area\n" ));
+ }
+
+
+ static void
+ gxv_mort_subtables_validate( FT_Bytes table,
+ FT_Bytes limit,
+ FT_UShort nSubtables,
+ GXV_Validator valid )
+ {
+ FT_Bytes p = table;
+
+ GXV_Validate_Func fmt_funcs_table[] =
+ {
+ gxv_mort_subtable_type0_validate, /* 0 */
+ gxv_mort_subtable_type1_validate, /* 1 */
+ gxv_mort_subtable_type2_validate, /* 2 */
+ NULL, /* 3 */
+ gxv_mort_subtable_type4_validate, /* 4 */
+ gxv_mort_subtable_type5_validate, /* 5 */
+
+ };
+
+ GXV_Validate_Func func;
+ FT_UShort i;
+
+
+ GXV_NAME_ENTER( "subtables in a chain" );
+
+ for ( i = 0; i < nSubtables; i++ )
+ {
+ FT_UShort length;
+ FT_UShort coverage;
+ FT_ULong subFeatureFlags;
+ FT_UInt type;
+ FT_UInt rest;
+
+
+ GXV_LIMIT_CHECK( 2 + 2 + 4 );
+ length = FT_NEXT_USHORT( p );
+ coverage = FT_NEXT_USHORT( p );
+ subFeatureFlags = FT_NEXT_ULONG( p );
+
+ GXV_TRACE(( "validating chain subtable %d/%d (%d bytes)\n",
+ i + 1, nSubtables, length ));
+ type = coverage & 0x0007;
+ rest = length - ( 2 + 2 + 4 );
+
+ GXV_LIMIT_CHECK( rest );
+ gxv_mort_coverage_validate( coverage, valid );
+
+ if ( type > 5 )
+ FT_INVALID_FORMAT;
+
+ func = fmt_funcs_table[type];
+ if ( func == NULL )
+ GXV_TRACE(( "morx type %d is reserved\n", type ));
+
+ func( p, p + rest, valid );
+
+ p += rest;
+ }
+
+ valid->subtable_length = p - table;
+
+ GXV_EXIT;
+ }
+
+
+ static void
+ gxv_mort_chain_validate( FT_Bytes table,
+ FT_Bytes limit,
+ GXV_Validator valid )
+ {
+ FT_Bytes p = table;
+ FT_ULong defaultFlags;
+ FT_ULong chainLength;
+ FT_UShort nFeatureFlags;
+ FT_UShort nSubtables;
+
+
+ GXV_NAME_ENTER( "mort chain header" );
+
+ GXV_LIMIT_CHECK( 4 + 4 + 2 + 2 );
+ defaultFlags = FT_NEXT_ULONG( p );
+ chainLength = FT_NEXT_ULONG( p );
+ nFeatureFlags = FT_NEXT_USHORT( p );
+ nSubtables = FT_NEXT_USHORT( p );
+
+ gxv_mort_featurearray_validate( p, table + chainLength,
+ nFeatureFlags, valid );
+ p += valid->subtable_length;
+ gxv_mort_subtables_validate( p, table + chainLength, nSubtables, valid );
+ valid->subtable_length = chainLength;
+
+ GXV_EXIT;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ gxv_mort_validate( FT_Bytes table,
+ FT_Face face,
+ FT_Validator ftvalid )
+ {
+ GXV_ValidatorRec validrec;
+ GXV_Validator valid = &validrec;
+ FT_Bytes p = table;
+ FT_Bytes limit = 0;
+ FT_ULong version;
+ FT_ULong nChains;
+ FT_ULong i;
+
+
+ valid->root = ftvalid;
+ valid->face = face;
+ limit = valid->root->limit;
+
+ FT_TRACE3(( "validating `mort' table\n" ));
+ GXV_INIT;
+
+ GXV_LIMIT_CHECK( 4 + 4 );
+ version = FT_NEXT_ULONG( p );
+ nChains = FT_NEXT_ULONG( p );
+
+ if (version != 0x00010000UL)
+ FT_INVALID_FORMAT;
+
+ for ( i = 0; i < nChains; i++ )
+ {
+ GXV_TRACE(( "validating chain %d/%d\n", i + 1, nChains ));
+ GXV_32BIT_ALIGNMENT_VALIDATE( p - table );
+ gxv_mort_chain_validate( p, limit, valid );
+ p += valid->subtable_length;
+ }
+
+ FT_TRACE4(( "\n" ));
+ }
+
+
+/* END */