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00041 #ifndef __GXVCOMMN_H__
00042 #define __GXVCOMMN_H__
00043
00044
00045 #include <ft2build.h>
00046 #include "gxvalid.h"
00047 #include FT_INTERNAL_DEBUG_H
00048 #include FT_SFNT_NAMES_H
00049
00050
00051 FT_BEGIN_HEADER
00052
00053
00054
00055
00056
00057
00058
00059
00060
00061
00062 typedef struct GXV_ValidatorRec_* GXV_Validator;
00063
00064
00065 #define DUMMY_LIMIT 0
00066
00067 typedef void
00068 (*GXV_Validate_Func)( FT_Bytes table,
00069 FT_Bytes limit,
00070 GXV_Validator valid );
00071
00072
00073
00074
00075 typedef union GXV_LookupValueDesc_
00076 {
00077 FT_UShort u;
00078 FT_Short s;
00079
00080 } GXV_LookupValueDesc;
00081
00082 typedef const GXV_LookupValueDesc* GXV_LookupValueCPtr;
00083
00084 typedef enum GXV_LookupValue_SignSpec_
00085 {
00086 GXV_LOOKUPVALUE_UNSIGNED = 0,
00087 GXV_LOOKUPVALUE_SIGNED
00088
00089 } GXV_LookupValue_SignSpec;
00090
00091
00092 typedef void
00093 (*GXV_Lookup_Value_Validate_Func)( FT_UShort glyph,
00094 GXV_LookupValueCPtr value_p,
00095 GXV_Validator valid );
00096
00097 typedef GXV_LookupValueDesc
00098 (*GXV_Lookup_Fmt4_Transit_Func)( FT_UShort relative_gindex,
00099 GXV_LookupValueCPtr base_value_p,
00100 FT_Bytes lookuptbl_limit,
00101 GXV_Validator valid );
00102
00103
00104
00105
00106 typedef enum GXV_GlyphOffset_Format_
00107 {
00108 GXV_GLYPHOFFSET_NONE = -1,
00109 GXV_GLYPHOFFSET_UCHAR = 2,
00110 GXV_GLYPHOFFSET_CHAR,
00111 GXV_GLYPHOFFSET_USHORT = 4,
00112 GXV_GLYPHOFFSET_SHORT,
00113 GXV_GLYPHOFFSET_ULONG = 8,
00114 GXV_GLYPHOFFSET_LONG
00115
00116 } GXV_GlyphOffset_Format;
00117
00118
00119 #define GXV_GLYPHOFFSET_FMT( table ) \
00120 ( valid->table.entry_glyphoffset_fmt )
00121
00122 #define GXV_GLYPHOFFSET_SIZE( table ) \
00123 ( valid->table.entry_glyphoffset_fmt / 2 )
00124
00125
00126
00127
00128 typedef union GXV_StateTable_GlyphOffsetDesc_
00129 {
00130 FT_Byte uc;
00131 FT_UShort u;
00132 FT_ULong ul;
00133 FT_Char c;
00134 FT_Short s;
00135 FT_Long l;
00136
00137 } GXV_StateTable_GlyphOffsetDesc;
00138
00139 typedef const GXV_StateTable_GlyphOffsetDesc* GXV_StateTable_GlyphOffsetCPtr;
00140
00141 typedef void
00142 (*GXV_StateTable_Subtable_Setup_Func)( FT_UShort table_size,
00143 FT_UShort classTable,
00144 FT_UShort stateArray,
00145 FT_UShort entryTable,
00146 FT_UShort* classTable_length_p,
00147 FT_UShort* stateArray_length_p,
00148 FT_UShort* entryTable_length_p,
00149 GXV_Validator valid );
00150
00151 typedef void
00152 (*GXV_StateTable_Entry_Validate_Func)(
00153 FT_Byte state,
00154 FT_UShort flags,
00155 GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
00156 FT_Bytes statetable_table,
00157 FT_Bytes statetable_limit,
00158 GXV_Validator valid );
00159
00160 typedef void
00161 (*GXV_StateTable_OptData_Load_Func)( FT_Bytes table,
00162 FT_Bytes limit,
00163 GXV_Validator valid );
00164
00165 typedef struct GXV_StateTable_ValidatorRec_
00166 {
00167 GXV_GlyphOffset_Format entry_glyphoffset_fmt;
00168 void* optdata;
00169
00170 GXV_StateTable_Subtable_Setup_Func subtable_setup_func;
00171 GXV_StateTable_Entry_Validate_Func entry_validate_func;
00172 GXV_StateTable_OptData_Load_Func optdata_load_func;
00173
00174 } GXV_StateTable_ValidatorRec, *GXV_StateTable_ValidatorRecData;
00175
00176
00177
00178
00179 typedef GXV_StateTable_GlyphOffsetDesc GXV_XStateTable_GlyphOffsetDesc;
00180
00181 typedef const GXV_XStateTable_GlyphOffsetDesc* GXV_XStateTable_GlyphOffsetCPtr;
00182
00183 typedef void
00184 (*GXV_XStateTable_Subtable_Setup_Func)( FT_ULong table_size,
00185 FT_ULong classTable,
00186 FT_ULong stateArray,
00187 FT_ULong entryTable,
00188 FT_ULong* classTable_length_p,
00189 FT_ULong* stateArray_length_p,
00190 FT_ULong* entryTable_length_p,
00191 GXV_Validator valid );
00192
00193 typedef void
00194 (*GXV_XStateTable_Entry_Validate_Func)(
00195 FT_UShort state,
00196 FT_UShort flags,
00197 GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
00198 FT_Bytes xstatetable_table,
00199 FT_Bytes xstatetable_limit,
00200 GXV_Validator valid );
00201
00202
00203 typedef GXV_StateTable_OptData_Load_Func GXV_XStateTable_OptData_Load_Func;
00204
00205
00206 typedef struct GXV_XStateTable_ValidatorRec_
00207 {
00208 int entry_glyphoffset_fmt;
00209 void* optdata;
00210
00211 GXV_XStateTable_Subtable_Setup_Func subtable_setup_func;
00212 GXV_XStateTable_Entry_Validate_Func entry_validate_func;
00213 GXV_XStateTable_OptData_Load_Func optdata_load_func;
00214
00215 FT_ULong nClasses;
00216 FT_UShort maxClassID;
00217
00218 } GXV_XStateTable_ValidatorRec, *GXV_XStateTable_ValidatorRecData;
00219
00220
00221
00222
00223 typedef struct GXV_ValidatorRec_
00224 {
00225 FT_Validator root;
00226
00227 FT_Face face;
00228 void* table_data;
00229
00230 FT_ULong subtable_length;
00231
00232 GXV_LookupValue_SignSpec lookupval_sign;
00233 GXV_Lookup_Value_Validate_Func lookupval_func;
00234 GXV_Lookup_Fmt4_Transit_Func lookupfmt4_trans;
00235 FT_Bytes lookuptbl_head;
00236
00237 GXV_StateTable_ValidatorRec statetable;
00238 GXV_XStateTable_ValidatorRec xstatetable;
00239
00240 #ifdef FT_DEBUG_LEVEL_TRACE
00241 FT_UInt debug_indent;
00242 const FT_String* debug_function_name[3];
00243 #endif
00244
00245 } GXV_ValidatorRec;
00246
00247
00248 #define GXV_TABLE_DATA( tag, field ) \
00249 ( ( (GXV_ ## tag ## _Data)valid->table_data )->field )
00250
00251 #undef FT_INVALID_
00252 #define FT_INVALID_( _prefix, _error ) \
00253 ft_validator_error( valid->root, _prefix ## _error )
00254
00255 #define GXV_LIMIT_CHECK( _count ) \
00256 FT_BEGIN_STMNT \
00257 if ( p + _count > ( limit? limit : valid->root->limit ) ) \
00258 FT_INVALID_TOO_SHORT; \
00259 FT_END_STMNT
00260
00261
00262 #ifdef FT_DEBUG_LEVEL_TRACE
00263
00264 #define GXV_INIT valid->debug_indent = 0
00265
00266 #define GXV_NAME_ENTER( name ) \
00267 FT_BEGIN_STMNT \
00268 valid->debug_indent += 2; \
00269 FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
00270 FT_TRACE4(( "%s table\n", name )); \
00271 FT_END_STMNT
00272
00273 #define GXV_EXIT valid->debug_indent -= 2
00274
00275 #define GXV_TRACE( s ) \
00276 FT_BEGIN_STMNT \
00277 FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
00278 FT_TRACE4( s ); \
00279 FT_END_STMNT
00280
00281 #else
00282
00283 #define GXV_INIT do { } while ( 0 )
00284 #define GXV_NAME_ENTER( name ) do { } while ( 0 )
00285 #define GXV_EXIT do { } while ( 0 )
00286
00287 #define GXV_TRACE( s ) do { } while ( 0 )
00288
00289 #endif
00290
00291
00292
00293
00294
00295
00296
00297
00298
00299
00300 #define GXV_32BIT_ALIGNMENT_VALIDATE( a ) \
00301 FT_BEGIN_STMNT \
00302 { \
00303 if ( 0 != ( (a) % 4 ) ) \
00304 FT_INVALID_OFFSET ; \
00305 } \
00306 FT_END_STMNT
00307
00308
00309
00310
00311
00312
00313
00314
00315
00316
00317 #define GXV_TRACE_HEXDUMP( p, len ) \
00318 FT_BEGIN_STMNT \
00319 { \
00320 FT_Bytes b; \
00321 \
00322 \
00323 for ( b = p; b < (FT_Bytes)p + len; b++ ) \
00324 FT_TRACE1(("\\x%02x", *b)) ; \
00325 } \
00326 FT_END_STMNT
00327
00328 #define GXV_TRACE_HEXDUMP_C( p, len ) \
00329 FT_BEGIN_STMNT \
00330 { \
00331 FT_Bytes b; \
00332 \
00333 \
00334 for ( b = p; b < (FT_Bytes)p + len; b++ ) \
00335 if ( 0x40 < *b && *b < 0x7e ) \
00336 FT_TRACE1(("%c", *b)) ; \
00337 else \
00338 FT_TRACE1(("\\x%02x", *b)) ; \
00339 } \
00340 FT_END_STMNT
00341
00342 #define GXV_TRACE_HEXDUMP_SFNTNAME( n ) \
00343 GXV_TRACE_HEXDUMP( n.string, n.string_len )
00344
00345
00346
00347
00348
00349
00350
00351
00352
00353
00354 FT_LOCAL( void )
00355 gxv_BinSrchHeader_validate( FT_Bytes p,
00356 FT_Bytes limit,
00357 FT_UShort* unitSize_p,
00358 FT_UShort* nUnits_p,
00359 GXV_Validator valid );
00360
00361 FT_LOCAL( void )
00362 gxv_LookupTable_validate( FT_Bytes table,
00363 FT_Bytes limit,
00364 GXV_Validator valid );
00365
00366
00367
00368
00369
00370
00371
00372
00373
00374
00375 FT_LOCAL( FT_Int )
00376 gxv_glyphid_validate( FT_UShort gid,
00377 GXV_Validator valid );
00378
00379
00380
00381
00382
00383
00384
00385
00386
00387
00388 FT_LOCAL( void )
00389 gxv_ctlPoint_validate( FT_UShort gid,
00390 FT_Short ctl_point,
00391 GXV_Validator valid );
00392
00393
00394
00395
00396
00397
00398
00399
00400
00401
00402 FT_LOCAL( void )
00403 gxv_sfntName_validate( FT_UShort name_index,
00404 FT_UShort min_index,
00405 FT_UShort max_index,
00406 GXV_Validator valid );
00407
00408
00409
00410
00411
00412
00413
00414
00415
00416
00417 FT_LOCAL( void )
00418 gxv_StateTable_subtable_setup( FT_UShort table_size,
00419 FT_UShort classTable,
00420 FT_UShort stateArray,
00421 FT_UShort entryTable,
00422 FT_UShort* classTable_length_p,
00423 FT_UShort* stateArray_length_p,
00424 FT_UShort* entryTable_length_p,
00425 GXV_Validator valid );
00426
00427 FT_LOCAL( void )
00428 gxv_XStateTable_subtable_setup( FT_ULong table_size,
00429 FT_ULong classTable,
00430 FT_ULong stateArray,
00431 FT_ULong entryTable,
00432 FT_ULong* classTable_length_p,
00433 FT_ULong* stateArray_length_p,
00434 FT_ULong* entryTable_length_p,
00435 GXV_Validator valid );
00436
00437 FT_LOCAL( void )
00438 gxv_StateTable_validate( FT_Bytes table,
00439 FT_Bytes limit,
00440 GXV_Validator valid );
00441
00442 FT_LOCAL( void )
00443 gxv_XStateTable_validate( FT_Bytes table,
00444 FT_Bytes limit,
00445 GXV_Validator valid );
00446
00447
00448
00449
00450
00451
00452
00453
00454
00455
00456 FT_LOCAL( void )
00457 gxv_array_getlimits_byte( FT_Bytes table,
00458 FT_Bytes limit,
00459 FT_Byte* min,
00460 FT_Byte* max,
00461 GXV_Validator valid );
00462
00463 FT_LOCAL( void )
00464 gxv_array_getlimits_ushort( FT_Bytes table,
00465 FT_Bytes limit,
00466 FT_UShort* min,
00467 FT_UShort* max,
00468 GXV_Validator valid );
00469
00470 FT_LOCAL( void )
00471 gxv_set_length_by_ushort_offset( FT_UShort* offset,
00472 FT_UShort** length,
00473 FT_UShort* buff,
00474 FT_UInt nmemb,
00475 FT_UShort limit,
00476 GXV_Validator valid );
00477
00478 FT_LOCAL( void )
00479 gxv_set_length_by_ulong_offset( FT_ULong* offset,
00480 FT_ULong** length,
00481 FT_ULong* buff,
00482 FT_UInt nmemb,
00483 FT_ULong limit,
00484 GXV_Validator valid);
00485
00486
00487 #define GXV_SUBTABLE_OFFSET_CHECK( _offset ) \
00488 FT_BEGIN_STMNT \
00489 if ( (_offset) > valid->subtable_length ) \
00490 FT_INVALID_OFFSET; \
00491 FT_END_STMNT
00492
00493 #define GXV_SUBTABLE_LIMIT_CHECK( _count ) \
00494 FT_BEGIN_STMNT \
00495 if ( ( p + (_count) - valid->subtable_start ) > \
00496 valid->subtable_length ) \
00497 FT_INVALID_TOO_SHORT; \
00498 FT_END_STMNT
00499
00500 #define GXV_USHORT_TO_SHORT( _us ) \
00501 ( ( 0x8000U < ( _us ) ) ? ( ( _us ) - 0x8000U ) : ( _us ) )
00502
00503 #define GXV_STATETABLE_HEADER_SIZE ( 2 + 2 + 2 + 2 )
00504 #define GXV_STATEHEADER_SIZE GXV_STATETABLE_HEADER_SIZE
00505
00506 #define GXV_XSTATETABLE_HEADER_SIZE ( 4 + 4 + 4 + 4 )
00507 #define GXV_XSTATEHEADER_SIZE GXV_XSTATETABLE_HEADER_SIZE
00508
00509
00510
00511
00512
00513
00514
00515
00516
00517
00518 typedef struct GXV_odtect_DataRec_
00519 {
00520 FT_Bytes start;
00521 FT_ULong length;
00522 FT_String* name;
00523
00524 } GXV_odtect_DataRec, *GXV_odtect_Data;
00525
00526 typedef struct GXV_odtect_RangeRec_
00527 {
00528 FT_UInt nRanges;
00529 GXV_odtect_Data range;
00530
00531 } GXV_odtect_RangeRec, *GXV_odtect_Range;
00532
00533
00534 FT_LOCAL( void )
00535 gxv_odtect_add_range( FT_Bytes start,
00536 FT_ULong length,
00537 const FT_String* name,
00538 GXV_odtect_Range odtect );
00539
00540 FT_LOCAL( void )
00541 gxv_odtect_validate( GXV_odtect_Range odtect,
00542 GXV_Validator valid );
00543
00544
00545 #define GXV_ODTECT( n, odtect ) \
00546 GXV_odtect_DataRec odtect ## _range[n]; \
00547 GXV_odtect_RangeRec odtect ## _rec = { 0, NULL }; \
00548 GXV_odtect_Range odtect = NULL
00549
00550 #define GXV_ODTECT_INIT( odtect ) \
00551 FT_BEGIN_STMNT \
00552 odtect ## _rec.nRanges = 0; \
00553 odtect ## _rec.range = odtect ## _range; \
00554 odtect = & odtect ## _rec; \
00555 FT_END_STMNT
00556
00557
00558
00559
00560 FT_END_HEADER
00561
00562 #endif
00563
00564
00565
