diff options
Diffstat (limited to 'src/3rdparty/freetype/src/gxvalid/gxvprop.c')
| -rw-r--r-- | src/3rdparty/freetype/src/gxvalid/gxvprop.c | 70 |
1 files changed, 49 insertions, 21 deletions
diff --git a/src/3rdparty/freetype/src/gxvalid/gxvprop.c b/src/3rdparty/freetype/src/gxvalid/gxvprop.c index 66c3ab7404..aa5c8eed31 100644 --- a/src/3rdparty/freetype/src/gxvalid/gxvprop.c +++ b/src/3rdparty/freetype/src/gxvalid/gxvprop.c @@ -75,7 +75,7 @@ static void gxv_prop_zero_advance_validate( FT_UShort gid, - GXV_Validator valid ) + GXV_Validator gxvalid ) { FT_Face face; FT_Error error; @@ -84,7 +84,7 @@ GXV_NAME_ENTER( "zero advance" ); - face = valid->face; + face = gxvalid->face; error = FT_Load_Glyph( face, gid, @@ -96,7 +96,10 @@ if ( glyph->advance.x != (FT_Pos)0 || glyph->advance.y != (FT_Pos)0 ) + { + GXV_TRACE(( " found non-zero advance in zero-advance glyph\n" )); FT_INVALID_DATA; + } GXV_EXIT; } @@ -106,10 +109,10 @@ static void gxv_prop_property_validate( FT_UShort property, FT_UShort glyph, - GXV_Validator valid ) + GXV_Validator gxvalid ) { if ( glyph != 0 && ( property & GXV_PROP_FLOATER ) ) - gxv_prop_zero_advance_validate( glyph, valid ); + gxv_prop_zero_advance_validate( glyph, gxvalid ); if ( property & GXV_PROP_USE_COMPLEMENTARY_BRACKET ) { @@ -119,7 +122,10 @@ offset = (FT_UShort)( property & GXV_PROP_COMPLEMENTARY_BRACKET_OFFSET ); if ( offset == 0 ) - FT_INVALID_DATA; + { + GXV_TRACE(( " found zero offset to property\n" )); + FT_INVALID_OFFSET; + } complement = (char)( offset >> 8 ); if ( complement & 0x08 ) @@ -131,12 +137,15 @@ /* The gid for complement must be greater than 0 */ if ( glyph <= complement ) + { + GXV_TRACE(( " found non-positive glyph complement\n" )); FT_INVALID_DATA; + } } else { /* The gid for complement must be the face. */ - gxv_glyphid_validate( (FT_UShort)( glyph + complement ), valid ); + gxv_glyphid_validate( (FT_UShort)( glyph + complement ), gxvalid ); } } else @@ -150,18 +159,27 @@ if ( property & GXV_PROP_ATTACHING_TO_RIGHT ) { if ( GXV_PROP_DATA( version ) == 0x00010000UL ) + { + GXV_TRACE(( " found older version (1.0) in new version table\n" )); FT_INVALID_DATA; + } } if ( property & GXV_PROP_RESERVED ) + { + GXV_TRACE(( " found non-zero bits in reserved bits\n" )); FT_INVALID_DATA; + } if ( ( property & GXV_PROP_DIRECTIONALITY_CLASS ) > 11 ) { /* TODO: Too restricted. Use the validation level. */ if ( GXV_PROP_DATA( version ) == 0x00010000UL || GXV_PROP_DATA( version ) == 0x00020000UL ) + { + GXV_TRACE(( " found too old version in directionality class\n" )); FT_INVALID_DATA; + } } } @@ -169,9 +187,9 @@ static void gxv_prop_LookupValue_validate( FT_UShort glyph, GXV_LookupValueCPtr value_p, - GXV_Validator valid ) + GXV_Validator gxvalid ) { - gxv_prop_property_validate( value_p->u, glyph, valid ); + gxv_prop_property_validate( value_p->u, glyph, gxvalid ); } @@ -206,7 +224,7 @@ gxv_prop_LookupFmt4_transit( FT_UShort relative_gindex, GXV_LookupValueCPtr base_value_p, FT_Bytes lookuptbl_limit, - GXV_Validator valid ) + GXV_Validator gxvalid ) { FT_Bytes p; FT_Bytes limit; @@ -215,8 +233,8 @@ /* XXX: check range? */ offset = (FT_UShort)( base_value_p->u + - relative_gindex * sizeof( FT_UShort ) ); - p = valid->lookuptbl_head + offset; + relative_gindex * sizeof ( FT_UShort ) ); + p = gxvalid->lookuptbl_head + offset; limit = lookuptbl_limit; GXV_LIMIT_CHECK ( 2 ); @@ -241,8 +259,8 @@ { FT_Bytes p = table; FT_Bytes limit = 0; - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; + GXV_ValidatorRec gxvalidrec; + GXV_Validator gxvalid = &gxvalidrec; GXV_prop_DataRec proprec; GXV_prop_Data prop = &proprec; @@ -252,9 +270,9 @@ FT_UShort defaultProp; - valid->root = ftvalid; - valid->table_data = prop; - valid->face = face; + gxvalid->root = ftvalid; + gxvalid->table_data = prop; + gxvalid->face = face; FT_TRACE3(( "validating `prop' table\n" )); GXV_INIT; @@ -264,18 +282,28 @@ format = FT_NEXT_USHORT( p ); defaultProp = FT_NEXT_USHORT( p ); + GXV_TRACE(( " version 0x%08x\n", version )); + GXV_TRACE(( " format 0x%04x\n", format )); + GXV_TRACE(( " defaultProp 0x%04x\n", defaultProp )); + /* only versions 1.0, 2.0, 3.0 are defined (1996) */ if ( version != 0x00010000UL && version != 0x00020000UL && version != 0x00030000UL ) + { + GXV_TRACE(( " found unknown version\n" )); FT_INVALID_FORMAT; + } /* only formats 0x0000, 0x0001 are defined (1996) */ if ( format > 1 ) + { + GXV_TRACE(( " found unknown format\n" )); FT_INVALID_FORMAT; + } - gxv_prop_property_validate( defaultProp, 0, valid ); + gxv_prop_property_validate( defaultProp, 0, gxvalid ); if ( format == 0 ) { @@ -287,11 +315,11 @@ /* format == 1 */ GXV_PROP_DATA( version ) = version; - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_prop_LookupValue_validate; - valid->lookupfmt4_trans = gxv_prop_LookupFmt4_transit; + gxvalid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; + gxvalid->lookupval_func = gxv_prop_LookupValue_validate; + gxvalid->lookupfmt4_trans = gxv_prop_LookupFmt4_transit; - gxv_LookupTable_validate( p, limit, valid ); + gxv_LookupTable_validate( p, limit, gxvalid ); Exit: FT_TRACE4(( "\n" )); |