Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* ftrfork.c */ |
| 4 | /* */ |
| 5 | /* Embedded resource forks accessor (body). */ |
| 6 | /* */ |
Werner Lemberg | be3c981 | 2006-01-27 14:16:16 +0000 | [diff] [blame] | 7 | /* Copyright 2004, 2005, 2006 by */ |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 8 | /* Masatake YAMATO and Redhat K.K. */ |
| 9 | /* */ |
| 10 | /* FT_Raccess_Get_HeaderInfo() and raccess_guess_darwin_hfsplus() are */ |
| 11 | /* derived from ftobjs.c. */ |
| 12 | /* */ |
| 13 | /* This file is part of the FreeType project, and may only be used, */ |
| 14 | /* modified, and distributed under the terms of the FreeType project */ |
| 15 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 16 | /* this file you indicate that you have read the license and */ |
| 17 | /* understand and accept it fully. */ |
| 18 | /* */ |
| 19 | /***************************************************************************/ |
| 20 | |
| 21 | /***************************************************************************/ |
| 22 | /* Development of the code in this file is support of */ |
| 23 | /* Information-technology Promotion Agency, Japan. */ |
| 24 | /***************************************************************************/ |
| 25 | |
| 26 | |
| 27 | #include <ft2build.h> |
| 28 | #include FT_INTERNAL_DEBUG_H |
| 29 | #include FT_INTERNAL_STREAM_H |
| 30 | #include FT_INTERNAL_RFORK_H |
| 31 | |
| 32 | |
| 33 | #undef FT_COMPONENT |
| 34 | #define FT_COMPONENT trace_raccess |
| 35 | |
| 36 | |
| 37 | /*************************************************************************/ |
| 38 | /*************************************************************************/ |
| 39 | /*************************************************************************/ |
| 40 | /**** ****/ |
| 41 | /**** ****/ |
| 42 | /**** Resource fork directory access ****/ |
| 43 | /**** ****/ |
| 44 | /**** ****/ |
| 45 | /*************************************************************************/ |
| 46 | /*************************************************************************/ |
| 47 | /*************************************************************************/ |
| 48 | |
| 49 | FT_BASE_DEF( FT_Error ) |
| 50 | FT_Raccess_Get_HeaderInfo( FT_Library library, |
| 51 | FT_Stream stream, |
| 52 | FT_Long rfork_offset, |
| 53 | FT_Long *map_offset, |
| 54 | FT_Long *rdata_pos ) |
| 55 | { |
| 56 | FT_Error error; |
| 57 | unsigned char head[16], head2[16]; |
| 58 | FT_Long map_pos, rdata_len; |
| 59 | int allzeros, allmatch, i; |
| 60 | FT_Long type_list; |
| 61 | |
| 62 | FT_UNUSED( library ); |
| 63 | |
| 64 | |
| 65 | error = FT_Stream_Seek( stream, rfork_offset ); |
| 66 | if ( error ) |
| 67 | return error; |
| 68 | |
| 69 | error = FT_Stream_Read( stream, (FT_Byte *)head, 16 ); |
| 70 | if ( error ) |
| 71 | return error; |
| 72 | |
| 73 | *rdata_pos = rfork_offset + ( ( head[0] << 24 ) | |
| 74 | ( head[1] << 16 ) | |
| 75 | ( head[2] << 8 ) | |
| 76 | head[3] ); |
| 77 | map_pos = rfork_offset + ( ( head[4] << 24 ) | |
| 78 | ( head[5] << 16 ) | |
| 79 | ( head[6] << 8 ) | |
| 80 | head[7] ); |
| 81 | rdata_len = ( head[ 8] << 24 ) | |
| 82 | ( head[ 9] << 16 ) | |
| 83 | ( head[10] << 8 ) | |
| 84 | head[11]; |
| 85 | |
| 86 | /* map_len = head[12] .. head[15] */ |
| 87 | |
| 88 | if ( *rdata_pos + rdata_len != map_pos || map_pos == rfork_offset ) |
| 89 | return FT_Err_Unknown_File_Format; |
| 90 | |
| 91 | error = FT_Stream_Seek( stream, map_pos ); |
| 92 | if ( error ) |
| 93 | return error; |
| 94 | |
| 95 | head2[15] = (FT_Byte)( head[15] + 1 ); /* make it be different */ |
| 96 | |
| 97 | error = FT_Stream_Read( stream, (FT_Byte*)head2, 16 ); |
| 98 | if ( error ) |
| 99 | return error; |
| 100 | |
| 101 | allzeros = 1; |
| 102 | allmatch = 1; |
| 103 | for ( i = 0; i < 16; ++i ) |
| 104 | { |
| 105 | if ( head2[i] != 0 ) |
| 106 | allzeros = 0; |
| 107 | if ( head2[i] != head[i] ) |
| 108 | allmatch = 0; |
| 109 | } |
| 110 | if ( !allzeros && !allmatch ) |
| 111 | return FT_Err_Unknown_File_Format; |
| 112 | |
| 113 | /* If we have reached this point then it is probably a mac resource */ |
| 114 | /* file. Now, does it contain any interesting resources? */ |
| 115 | /* Skip handle to next resource map, the file resource number, and */ |
| 116 | /* attributes. */ |
| 117 | (void)FT_STREAM_SKIP( 4 /* skip handle to next resource map */ |
| 118 | + 2 /* skip file resource number */ |
| 119 | + 2 ); /* skip attributes */ |
| 120 | |
| 121 | if ( FT_READ_USHORT( type_list ) ) |
| 122 | return error; |
| 123 | if ( type_list == -1 ) |
| 124 | return FT_Err_Unknown_File_Format; |
| 125 | |
| 126 | error = FT_Stream_Seek( stream, map_pos + type_list ); |
| 127 | if ( error ) |
| 128 | return error; |
| 129 | |
| 130 | *map_offset = map_pos + type_list; |
| 131 | return FT_Err_Ok; |
| 132 | } |
| 133 | |
| 134 | |
| 135 | FT_BASE_DEF( FT_Error ) |
| 136 | FT_Raccess_Get_DataOffsets( FT_Library library, |
| 137 | FT_Stream stream, |
| 138 | FT_Long map_offset, |
| 139 | FT_Long rdata_pos, |
| 140 | FT_Long tag, |
| 141 | FT_Long **offsets, |
| 142 | FT_Long *count ) |
| 143 | { |
| 144 | FT_Error error; |
| 145 | int i, j, cnt, subcnt; |
| 146 | FT_Long tag_internal, rpos; |
| 147 | FT_Memory memory = library->memory; |
| 148 | FT_Long temp; |
| 149 | FT_Long *offsets_internal; |
| 150 | |
| 151 | |
| 152 | error = FT_Stream_Seek( stream, map_offset ); |
| 153 | if ( error ) |
| 154 | return error; |
| 155 | |
| 156 | if ( FT_READ_USHORT( cnt ) ) |
| 157 | return error; |
| 158 | cnt++; |
| 159 | |
| 160 | for ( i = 0; i < cnt; ++i ) |
| 161 | { |
| 162 | if ( FT_READ_LONG( tag_internal ) || |
| 163 | FT_READ_USHORT( subcnt ) || |
| 164 | FT_READ_USHORT( rpos ) ) |
| 165 | return error; |
| 166 | |
| 167 | FT_TRACE2(( "Resource tags: %c%c%c%c\n", |
| 168 | (char)( 0xff & ( tag_internal >> 24 ) ), |
| 169 | (char)( 0xff & ( tag_internal >> 16 ) ), |
| 170 | (char)( 0xff & ( tag_internal >> 8 ) ), |
| 171 | (char)( 0xff & ( tag_internal >> 0 ) ) )); |
| 172 | |
| 173 | if ( tag_internal == tag ) |
| 174 | { |
| 175 | *count = subcnt + 1; |
| 176 | rpos += map_offset; |
| 177 | |
| 178 | error = FT_Stream_Seek( stream, rpos ); |
| 179 | if ( error ) |
| 180 | return error; |
| 181 | |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 182 | if ( FT_NEW_ARRAY( offsets_internal, *count ) ) |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 183 | return error; |
| 184 | |
| 185 | for ( j = 0; j < *count; ++j ) |
| 186 | { |
| 187 | (void)FT_STREAM_SKIP( 2 ); /* resource id */ |
| 188 | (void)FT_STREAM_SKIP( 2 ); /* rsource name */ |
| 189 | |
| 190 | if ( FT_READ_LONG( temp ) ) |
| 191 | { |
| 192 | FT_FREE( offsets_internal ); |
| 193 | return error; |
| 194 | } |
| 195 | |
| 196 | offsets_internal[j] = rdata_pos + ( temp & 0xFFFFFFL ); |
| 197 | |
| 198 | (void)FT_STREAM_SKIP( 4 ); /* mbz */ |
| 199 | } |
| 200 | |
| 201 | *offsets = offsets_internal; |
| 202 | |
| 203 | return FT_Err_Ok; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | return FT_Err_Cannot_Open_Resource; |
| 208 | } |
| 209 | |
| 210 | |
| 211 | #ifdef FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK |
| 212 | |
| 213 | /*************************************************************************/ |
| 214 | /*************************************************************************/ |
| 215 | /*************************************************************************/ |
| 216 | /**** ****/ |
| 217 | /**** ****/ |
| 218 | /**** Guessing functions ****/ |
| 219 | /**** ****/ |
| 220 | /**** When you add a new guessing function, ****/ |
| 221 | /**** update FT_RACCESS_N_RULES in ftrfork.h. ****/ |
| 222 | /**** ****/ |
| 223 | /*************************************************************************/ |
| 224 | /*************************************************************************/ |
| 225 | /*************************************************************************/ |
| 226 | |
| 227 | typedef FT_Error |
| 228 | (*raccess_guess_func)( FT_Library library, |
| 229 | FT_Stream stream, |
| 230 | char * base_file_name, |
| 231 | char **result_file_name, |
| 232 | FT_Long *result_offset ); |
| 233 | |
| 234 | |
| 235 | static FT_Error |
| 236 | raccess_guess_apple_double( FT_Library library, |
| 237 | FT_Stream stream, |
| 238 | char * base_file_name, |
| 239 | char **result_file_name, |
| 240 | FT_Long *result_offset ); |
| 241 | |
| 242 | static FT_Error |
| 243 | raccess_guess_apple_single( FT_Library library, |
| 244 | FT_Stream stream, |
| 245 | char * base_file_name, |
| 246 | char **result_file_name, |
| 247 | FT_Long *result_offset ); |
| 248 | |
| 249 | static FT_Error |
| 250 | raccess_guess_darwin_ufs_export( FT_Library library, |
| 251 | FT_Stream stream, |
| 252 | char * base_file_name, |
| 253 | char **result_file_name, |
| 254 | FT_Long *result_offset ); |
| 255 | |
| 256 | static FT_Error |
| 257 | raccess_guess_darwin_hfsplus( FT_Library library, |
| 258 | FT_Stream stream, |
| 259 | char * base_file_name, |
| 260 | char **result_file_name, |
| 261 | FT_Long *result_offset ); |
| 262 | |
| 263 | static FT_Error |
| 264 | raccess_guess_vfat( FT_Library library, |
| 265 | FT_Stream stream, |
| 266 | char * base_file_name, |
| 267 | char **result_file_name, |
| 268 | FT_Long *result_offset ); |
| 269 | |
| 270 | static FT_Error |
| 271 | raccess_guess_linux_cap( FT_Library library, |
| 272 | FT_Stream stream, |
| 273 | char * base_file_name, |
| 274 | char **result_file_name, |
| 275 | FT_Long *result_offset ); |
| 276 | |
| 277 | static FT_Error |
| 278 | raccess_guess_linux_double( FT_Library library, |
| 279 | FT_Stream stream, |
| 280 | char * base_file_name, |
| 281 | char **result_file_name, |
| 282 | FT_Long *result_offset ); |
| 283 | |
| 284 | static FT_Error |
| 285 | raccess_guess_linux_netatalk( FT_Library library, |
| 286 | FT_Stream stream, |
| 287 | char * base_file_name, |
| 288 | char **result_file_name, |
| 289 | FT_Long *result_offset ); |
| 290 | |
| 291 | |
| 292 | /*************************************************************************/ |
| 293 | /**** ****/ |
| 294 | /**** Helper functions ****/ |
| 295 | /**** ****/ |
| 296 | /*************************************************************************/ |
| 297 | |
| 298 | static FT_Error |
| 299 | raccess_guess_apple_generic( FT_Library library, |
| 300 | FT_Stream stream, |
| 301 | char * base_file_name, |
| 302 | FT_Int32 magic, |
| 303 | FT_Long *result_offset ); |
| 304 | |
| 305 | static FT_Error |
| 306 | raccess_guess_linux_double_from_file_name( FT_Library library, |
| 307 | char * file_name, |
| 308 | FT_Long *result_offset ); |
| 309 | |
| 310 | static char * |
| 311 | raccess_make_file_name( FT_Memory memory, |
| 312 | const char *original_name, |
| 313 | const char *insertion ); |
| 314 | |
| 315 | |
| 316 | FT_BASE_DEF( void ) |
| 317 | FT_Raccess_Guess( FT_Library library, |
| 318 | FT_Stream stream, |
| 319 | char* base_name, |
| 320 | char **new_names, |
| 321 | FT_Long *offsets, |
| 322 | FT_Error *errors ) |
| 323 | { |
| 324 | FT_Long i; |
| 325 | |
| 326 | |
| 327 | raccess_guess_func funcs[FT_RACCESS_N_RULES] = |
| 328 | { |
| 329 | raccess_guess_apple_double, |
| 330 | raccess_guess_apple_single, |
| 331 | raccess_guess_darwin_ufs_export, |
| 332 | raccess_guess_darwin_hfsplus, |
| 333 | raccess_guess_vfat, |
| 334 | raccess_guess_linux_cap, |
| 335 | raccess_guess_linux_double, |
| 336 | raccess_guess_linux_netatalk, |
| 337 | }; |
| 338 | |
| 339 | for ( i = 0; i < FT_RACCESS_N_RULES; i++ ) |
| 340 | { |
| 341 | new_names[i] = NULL; |
| 342 | errors[i] = FT_Stream_Seek( stream, 0 ); |
| 343 | if ( errors[i] ) |
| 344 | continue ; |
| 345 | |
| 346 | errors[i] = (funcs[i])( library, stream, base_name, |
| 347 | &(new_names[i]), &(offsets[i]) ); |
| 348 | } |
| 349 | |
| 350 | return; |
| 351 | } |
| 352 | |
| 353 | |
| 354 | static FT_Error |
| 355 | raccess_guess_apple_double( FT_Library library, |
| 356 | FT_Stream stream, |
| 357 | char * base_file_name, |
| 358 | char **result_file_name, |
| 359 | FT_Long *result_offset ) |
| 360 | { |
| 361 | FT_Int32 magic = ( 0x00 << 24 | 0x05 << 16 | 0x16 << 8 | 0x07 ); |
| 362 | |
| 363 | |
| 364 | *result_file_name = NULL; |
| 365 | return raccess_guess_apple_generic( library, stream, base_file_name, |
| 366 | magic, result_offset ); |
| 367 | } |
| 368 | |
| 369 | |
| 370 | static FT_Error |
| 371 | raccess_guess_apple_single( FT_Library library, |
| 372 | FT_Stream stream, |
| 373 | char * base_file_name, |
| 374 | char **result_file_name, |
| 375 | FT_Long *result_offset ) |
| 376 | { |
| 377 | FT_Int32 magic = (0x00 << 24 | 0x05 << 16 | 0x16 << 8 | 0x00); |
| 378 | |
| 379 | |
| 380 | *result_file_name = NULL; |
| 381 | return raccess_guess_apple_generic( library, stream, base_file_name, |
| 382 | magic, result_offset ); |
| 383 | } |
| 384 | |
| 385 | |
| 386 | static FT_Error |
| 387 | raccess_guess_darwin_ufs_export( FT_Library library, |
| 388 | FT_Stream stream, |
| 389 | char * base_file_name, |
| 390 | char **result_file_name, |
| 391 | FT_Long *result_offset ) |
| 392 | { |
| 393 | char* newpath; |
| 394 | FT_Error error; |
| 395 | FT_Memory memory; |
| 396 | |
| 397 | FT_UNUSED( stream ); |
| 398 | |
| 399 | |
| 400 | memory = library->memory; |
| 401 | newpath = raccess_make_file_name( memory, base_file_name, "._" ); |
| 402 | if ( !newpath ) |
| 403 | return FT_Err_Out_Of_Memory; |
| 404 | |
| 405 | error = raccess_guess_linux_double_from_file_name( library, newpath, |
| 406 | result_offset ); |
| 407 | if ( !error ) |
| 408 | *result_file_name = newpath; |
| 409 | else |
| 410 | FT_FREE( newpath ); |
| 411 | |
| 412 | return error; |
| 413 | } |
| 414 | |
| 415 | |
| 416 | static FT_Error |
| 417 | raccess_guess_darwin_hfsplus( FT_Library library, |
| 418 | FT_Stream stream, |
| 419 | char * base_file_name, |
| 420 | char **result_file_name, |
| 421 | FT_Long *result_offset ) |
| 422 | { |
| 423 | /* |
| 424 | Only meaningful on systems with hfs+ drivers (or Macs). |
| 425 | */ |
| 426 | FT_Error error; |
| 427 | char* newpath; |
| 428 | FT_Memory memory; |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 429 | FT_Long base_file_len = ft_strlen( base_file_name ); |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 430 | |
| 431 | FT_UNUSED( stream ); |
| 432 | |
| 433 | |
| 434 | memory = library->memory; |
| 435 | |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 436 | if ( base_file_len > FT_INT_MAX ) |
| 437 | return FT_Err_Array_Too_Large; |
| 438 | |
| 439 | if ( FT_ALLOC( newpath, base_file_len + 6 ) ) |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 440 | return error; |
| 441 | |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 442 | FT_MEM_COPY( newpath, base_file_name, base_file_len ); |
| 443 | FT_MEM_COPY( newpath + base_file_len, "/rsrc", 6 ); |
| 444 | |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 445 | *result_file_name = newpath; |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 446 | *result_offset = 0; |
| 447 | |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 448 | return FT_Err_Ok; |
| 449 | } |
| 450 | |
| 451 | |
| 452 | static FT_Error |
| 453 | raccess_guess_vfat( FT_Library library, |
| 454 | FT_Stream stream, |
| 455 | char * base_file_name, |
| 456 | char **result_file_name, |
| 457 | FT_Long *result_offset ) |
| 458 | { |
| 459 | char* newpath; |
| 460 | FT_Memory memory; |
| 461 | |
| 462 | FT_UNUSED( stream ); |
| 463 | |
| 464 | |
| 465 | memory = library->memory; |
| 466 | |
| 467 | newpath = raccess_make_file_name( memory, base_file_name, |
| 468 | "resource.frk/" ); |
| 469 | if ( !newpath ) |
| 470 | return FT_Err_Out_Of_Memory; |
| 471 | |
| 472 | *result_file_name = newpath; |
| 473 | *result_offset = 0; |
| 474 | |
| 475 | return FT_Err_Ok; |
| 476 | } |
| 477 | |
| 478 | |
| 479 | static FT_Error |
| 480 | raccess_guess_linux_cap( FT_Library library, |
| 481 | FT_Stream stream, |
| 482 | char * base_file_name, |
| 483 | char **result_file_name, |
| 484 | FT_Long *result_offset ) |
| 485 | { |
| 486 | char* newpath; |
| 487 | FT_Memory memory; |
| 488 | |
| 489 | FT_UNUSED( stream ); |
| 490 | |
| 491 | |
| 492 | memory = library->memory; |
| 493 | |
| 494 | newpath = raccess_make_file_name( memory, base_file_name, ".resource/" ); |
| 495 | if ( !newpath ) |
| 496 | return FT_Err_Out_Of_Memory; |
| 497 | |
| 498 | *result_file_name = newpath; |
| 499 | *result_offset = 0; |
| 500 | |
| 501 | return FT_Err_Ok; |
| 502 | } |
| 503 | |
| 504 | |
| 505 | static FT_Error |
| 506 | raccess_guess_linux_double( FT_Library library, |
| 507 | FT_Stream stream, |
| 508 | char * base_file_name, |
| 509 | char **result_file_name, |
| 510 | FT_Long *result_offset ) |
| 511 | { |
| 512 | char* newpath; |
| 513 | FT_Error error; |
| 514 | FT_Memory memory; |
| 515 | |
| 516 | FT_UNUSED( stream ); |
| 517 | |
| 518 | |
| 519 | memory = library->memory; |
| 520 | |
| 521 | newpath = raccess_make_file_name( memory, base_file_name, "%" ); |
| 522 | if ( !newpath ) |
| 523 | return FT_Err_Out_Of_Memory; |
| 524 | |
| 525 | error = raccess_guess_linux_double_from_file_name( library, newpath, |
| 526 | result_offset ); |
| 527 | if ( !error ) |
| 528 | *result_file_name = newpath; |
| 529 | else |
| 530 | FT_FREE( newpath ); |
| 531 | |
| 532 | return error; |
| 533 | } |
| 534 | |
| 535 | |
| 536 | static FT_Error |
| 537 | raccess_guess_linux_netatalk( FT_Library library, |
| 538 | FT_Stream stream, |
| 539 | char * base_file_name, |
| 540 | char **result_file_name, |
| 541 | FT_Long *result_offset ) |
| 542 | { |
| 543 | char* newpath; |
| 544 | FT_Error error; |
| 545 | FT_Memory memory; |
| 546 | |
| 547 | FT_UNUSED( stream ); |
| 548 | |
| 549 | |
| 550 | memory = library->memory; |
| 551 | |
| 552 | newpath = raccess_make_file_name( memory, base_file_name, |
| 553 | ".AppleDouble/" ); |
| 554 | if ( !newpath ) |
| 555 | return FT_Err_Out_Of_Memory; |
| 556 | |
| 557 | error = raccess_guess_linux_double_from_file_name( library, newpath, |
| 558 | result_offset ); |
| 559 | if ( !error ) |
| 560 | *result_file_name = newpath; |
| 561 | else |
| 562 | FT_FREE( newpath ); |
| 563 | |
| 564 | return error; |
| 565 | } |
| 566 | |
| 567 | |
| 568 | static FT_Error |
| 569 | raccess_guess_apple_generic( FT_Library library, |
| 570 | FT_Stream stream, |
| 571 | char * base_file_name, |
| 572 | FT_Int32 magic, |
| 573 | FT_Long *result_offset ) |
| 574 | { |
| 575 | FT_Int32 magic_from_stream; |
| 576 | FT_Error error; |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 577 | FT_Int32 version_number = 0; |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 578 | FT_UShort n_of_entries; |
| 579 | |
| 580 | int i; |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 581 | FT_UInt32 entry_id, entry_offset, entry_length = 0; |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 582 | |
| 583 | const FT_UInt32 resource_fork_entry_id = 0x2; |
| 584 | |
| 585 | FT_UNUSED( library ); |
| 586 | FT_UNUSED( base_file_name ); |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 587 | FT_UNUSED( version_number ); |
| 588 | FT_UNUSED( entry_length ); |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 589 | |
| 590 | |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 591 | if ( FT_READ_LONG( magic_from_stream ) ) |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 592 | return error; |
| 593 | if ( magic_from_stream != magic ) |
| 594 | return FT_Err_Unknown_File_Format; |
| 595 | |
| 596 | if ( FT_READ_LONG( version_number ) ) |
| 597 | return error; |
| 598 | |
| 599 | /* filler */ |
| 600 | error = FT_Stream_Skip( stream, 16 ); |
| 601 | if ( error ) |
| 602 | return error; |
| 603 | |
| 604 | if ( FT_READ_USHORT( n_of_entries ) ) |
| 605 | return error; |
| 606 | if ( n_of_entries == 0 ) |
| 607 | return FT_Err_Unknown_File_Format; |
| 608 | |
| 609 | for ( i = 0; i < n_of_entries; i++ ) |
| 610 | { |
| 611 | if ( FT_READ_LONG( entry_id ) ) |
| 612 | return error; |
| 613 | if ( entry_id == resource_fork_entry_id ) |
| 614 | { |
| 615 | if ( FT_READ_LONG( entry_offset ) || |
| 616 | FT_READ_LONG( entry_length ) ) |
| 617 | continue; |
| 618 | *result_offset = entry_offset; |
| 619 | |
| 620 | return FT_Err_Ok; |
| 621 | } |
| 622 | else |
| 623 | FT_Stream_Skip( stream, 4 + 4 ); /* offset + length */ |
| 624 | } |
| 625 | |
| 626 | return FT_Err_Unknown_File_Format; |
| 627 | } |
| 628 | |
| 629 | |
| 630 | static FT_Error |
| 631 | raccess_guess_linux_double_from_file_name( FT_Library library, |
| 632 | char * file_name, |
| 633 | FT_Long *result_offset ) |
| 634 | { |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 635 | FT_Open_Args args2; |
| 636 | FT_Stream stream2; |
| 637 | char * nouse = NULL; |
| 638 | FT_Error error; |
| 639 | |
| 640 | |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 641 | args2.flags = FT_OPEN_PATHNAME; |
| 642 | args2.pathname = file_name; |
| 643 | error = FT_Stream_New( library, &args2, &stream2 ); |
| 644 | if ( error ) |
| 645 | return error; |
| 646 | |
| 647 | error = raccess_guess_apple_double( library, stream2, file_name, |
| 648 | &nouse, result_offset ); |
| 649 | |
Suzuki, Toshiya (鈴木俊哉) | de0a96c | 2006-05-19 23:16:12 +0000 | [diff] [blame^] | 650 | FT_Stream_Free( stream2, 0 ); |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 651 | |
| 652 | return error; |
| 653 | } |
| 654 | |
| 655 | |
| 656 | static char* |
| 657 | raccess_make_file_name( FT_Memory memory, |
| 658 | const char *original_name, |
| 659 | const char *insertion ) |
| 660 | { |
| 661 | char* new_name; |
| 662 | char* tmp; |
| 663 | const char* slash; |
| 664 | unsigned new_length; |
David Turner | 6a681fa | 2006-01-27 12:11:22 +0000 | [diff] [blame] | 665 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 666 | |
| 667 | FT_UNUSED( error ); |
| 668 | |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 669 | |
| 670 | new_length = ft_strlen( original_name ) + ft_strlen( insertion ); |
| 671 | if ( FT_ALLOC( new_name, new_length + 1 ) ) |
| 672 | return NULL; |
| 673 | |
| 674 | tmp = ft_strrchr( original_name, '/' ); |
| 675 | if ( tmp ) |
| 676 | { |
| 677 | ft_strncpy( new_name, original_name, tmp - original_name + 1 ); |
| 678 | new_name[tmp - original_name + 1] = '\0'; |
| 679 | slash = tmp + 1; |
| 680 | } |
| 681 | else |
| 682 | { |
| 683 | slash = original_name; |
| 684 | new_name[0] = '\0'; |
| 685 | } |
| 686 | |
| 687 | ft_strcat( new_name, insertion ); |
| 688 | ft_strcat( new_name, slash ); |
| 689 | |
| 690 | return new_name; |
| 691 | } |
| 692 | |
| 693 | |
| 694 | #else /* !FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK */ |
| 695 | |
| 696 | |
| 697 | /*************************************************************************/ |
| 698 | /* Dummy function; just sets errors */ |
| 699 | /*************************************************************************/ |
| 700 | |
| 701 | FT_BASE_DEF( void ) |
| 702 | FT_Raccess_Guess( FT_Library library, |
| 703 | FT_Stream stream, |
| 704 | char* base_name, |
| 705 | char **new_names, |
| 706 | FT_Long *offsets, |
| 707 | FT_Error *errors ) |
| 708 | { |
| 709 | int i; |
| 710 | |
Werner Lemberg | 1743942 | 2004-08-11 05:25:37 +0000 | [diff] [blame] | 711 | FT_UNUSED( library ); |
| 712 | FT_UNUSED( stream ); |
| 713 | FT_UNUSED( base_name ); |
| 714 | |
Werner Lemberg | 7543533 | 2004-02-25 12:58:54 +0000 | [diff] [blame] | 715 | |
| 716 | for ( i = 0; i < FT_RACCESS_N_RULES; i++ ) |
| 717 | { |
| 718 | new_names[i] = NULL; |
| 719 | offsets[i] = 0; |
| 720 | errors[i] = FT_Err_Unimplemented_Feature; |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | |
| 725 | #endif /* !FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK */ |
| 726 | |
| 727 | |
| 728 | /* END */ |