1 /* 2 * Copyright (c) Ian F. Darwin 1986-1995. 3 * Software written by Ian F. Darwin and others; 4 * maintained 1995-present by Christos Zoulas and others. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice immediately at the beginning of the file, without modification, 11 * this list of conditions, and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /* 29 * file.h - definitions for file(1) program 30 * @(#)$File: file.h,v 1.234 2022/05/28 20:24:09 christos Exp $ 31 */ 32 33 #ifndef __file_h__ 34 #define __file_h__ 35 36 #ifdef HAVE_CONFIG_H 37 #include <config.h> 38 #endif 39 40 #ifdef HAVE_STDINT_H 41 #include <stdint.h> 42 #endif 43 44 #ifdef HAVE_INTTYPES_H 45 #include <inttypes.h> 46 #endif 47 48 #ifndef __STDC_LIMIT_MACROS 49 #define __STDC_LIMIT_MACROS 50 #endif 51 #ifndef __STDC_FORMAT_MACROS 52 #define __STDC_FORMAT_MACROS 53 #endif 54 55 #ifdef _WIN32 56 # ifdef PRIu32 57 # ifdef _WIN64 58 # define SIZE_T_FORMAT PRIu64 59 # else 60 # define SIZE_T_FORMAT PRIu32 61 # endif 62 # define INT64_T_FORMAT PRIi64 63 # define INTMAX_T_FORMAT PRIiMAX 64 # else 65 # ifdef _WIN64 66 # define SIZE_T_FORMAT "I64" 67 # else 68 # define SIZE_T_FORMAT "" 69 # endif 70 # define INT64_T_FORMAT "I64" 71 # define INTMAX_T_FORMAT "I64" 72 # endif 73 #else 74 # define SIZE_T_FORMAT "z" 75 # define INT64_T_FORMAT "ll" 76 # define INTMAX_T_FORMAT "j" 77 #endif 78 79 #include <stdio.h> /* Include that here, to make sure __P gets defined */ 80 #include <errno.h> 81 #include <fcntl.h> /* For open and flags */ 82 #include <regex.h> 83 #include <time.h> 84 #include <sys/types.h> 85 #ifndef WIN32 86 #include <sys/param.h> 87 #endif 88 /* Do this here and now, because struct stat gets re-defined on solaris */ 89 #include <sys/stat.h> 90 #include <stdarg.h> 91 #include <locale.h> 92 #if defined(HAVE_XLOCALE_H) 93 #include <xlocale.h> 94 #endif 95 96 #define ENABLE_CONDITIONALS 97 98 #ifndef MAGIC 99 #define MAGIC "/etc/magic" 100 #endif 101 102 #if defined(__EMX__) || defined (WIN32) 103 #define PATHSEP ';' 104 #else 105 #define PATHSEP ':' 106 #endif 107 108 #define private static 109 110 #if HAVE_VISIBILITY && !defined(WIN32) 111 #define public __attribute__ ((__visibility__("default"))) 112 #ifndef protected 113 #define protected __attribute__ ((__visibility__("hidden"))) 114 #endif 115 #else 116 #define public 117 #ifndef protected 118 #define protected 119 #endif 120 #endif 121 122 #ifndef __arraycount 123 #define __arraycount(a) (sizeof(a) / sizeof(a[0])) 124 #endif 125 126 #ifndef __GNUC_PREREQ__ 127 #ifdef __GNUC__ 128 #define __GNUC_PREREQ__(x, y) \ 129 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 130 (__GNUC__ > (x))) 131 #else 132 #define __GNUC_PREREQ__(x, y) 0 133 #endif 134 #endif 135 136 #ifndef __GNUC__ 137 #ifndef __attribute__ 138 #define __attribute__(a) 139 #endif 140 #endif 141 142 #ifndef MIN 143 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 144 #endif 145 146 #ifndef MAX 147 #define MAX(a,b) (((a) > (b)) ? (a) : (b)) 148 #endif 149 150 #ifndef O_CLOEXEC 151 # define O_CLOEXEC 0 152 #endif 153 154 #ifndef FD_CLOEXEC 155 # define FD_CLOEXEC 1 156 #endif 157 158 #define FILE_BADSIZE CAST(size_t, ~0ul) 159 #define MAXDESC 64 /* max len of text description/MIME type */ 160 #define MAXMIME 80 /* max len of text MIME type */ 161 #define MAXstring 128 /* max len of "string" types */ 162 163 #define MAGICNO 0xF11E041C 164 #define VERSIONNO 17 165 #define FILE_MAGICSIZE 376 166 167 #define FILE_GUID_SIZE sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX") 168 169 #define FILE_LOAD 0 170 #define FILE_CHECK 1 171 #define FILE_COMPILE 2 172 #define FILE_LIST 3 173 174 typedef regex_t file_regex_t; 175 176 struct buffer { 177 int fd; 178 struct stat st; 179 const void *fbuf; 180 size_t flen; 181 off_t eoff; 182 void *ebuf; 183 size_t elen; 184 }; 185 186 union VALUETYPE { 187 uint8_t b; 188 uint16_t h; 189 uint32_t l; 190 uint64_t q; 191 uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */ 192 uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */ 193 uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */ 194 char s[MAXstring]; /* the search string or regex pattern */ 195 unsigned char us[MAXstring]; 196 uint64_t guid[2]; 197 float f; 198 double d; 199 }; 200 201 struct magic { 202 /* Word 1 */ 203 uint16_t cont_level; /* level of ">" */ 204 uint8_t flag; 205 #define INDIR 0x01 /* if '(...)' appears */ 206 #define OFFADD 0x02 /* if '>&' or '>...(&' appears */ 207 #define INDIROFFADD 0x04 /* if '>&(' appears */ 208 #define UNSIGNED 0x08 /* comparison is unsigned */ 209 #define NOSPACE 0x10 /* suppress space character before output */ 210 #define BINTEST 0x20 /* test is for a binary type (set only 211 for top-level tests) */ 212 #define TEXTTEST 0x40 /* for passing to file_softmagic */ 213 #define OFFNEGATIVE 0x80 /* relative to the end of file */ 214 215 uint8_t factor; 216 217 /* Word 2 */ 218 uint8_t reln; /* relation (0=eq, '>'=gt, etc) */ 219 uint8_t vallen; /* length of string value, if any */ 220 uint8_t type; /* comparison type (FILE_*) */ 221 uint8_t in_type; /* type of indirection */ 222 #define FILE_INVALID 0 223 #define FILE_BYTE 1 224 #define FILE_SHORT 2 225 #define FILE_DEFAULT 3 226 #define FILE_LONG 4 227 #define FILE_STRING 5 228 #define FILE_DATE 6 229 #define FILE_BESHORT 7 230 #define FILE_BELONG 8 231 #define FILE_BEDATE 9 232 #define FILE_LESHORT 10 233 #define FILE_LELONG 11 234 #define FILE_LEDATE 12 235 #define FILE_PSTRING 13 236 #define FILE_LDATE 14 237 #define FILE_BELDATE 15 238 #define FILE_LELDATE 16 239 #define FILE_REGEX 17 240 #define FILE_BESTRING16 18 241 #define FILE_LESTRING16 19 242 #define FILE_SEARCH 20 243 #define FILE_MEDATE 21 244 #define FILE_MELDATE 22 245 #define FILE_MELONG 23 246 #define FILE_QUAD 24 247 #define FILE_LEQUAD 25 248 #define FILE_BEQUAD 26 249 #define FILE_QDATE 27 250 #define FILE_LEQDATE 28 251 #define FILE_BEQDATE 29 252 #define FILE_QLDATE 30 253 #define FILE_LEQLDATE 31 254 #define FILE_BEQLDATE 32 255 #define FILE_FLOAT 33 256 #define FILE_BEFLOAT 34 257 #define FILE_LEFLOAT 35 258 #define FILE_DOUBLE 36 259 #define FILE_BEDOUBLE 37 260 #define FILE_LEDOUBLE 38 261 #define FILE_BEID3 39 262 #define FILE_LEID3 40 263 #define FILE_INDIRECT 41 264 #define FILE_QWDATE 42 265 #define FILE_LEQWDATE 43 266 #define FILE_BEQWDATE 44 267 #define FILE_NAME 45 268 #define FILE_USE 46 269 #define FILE_CLEAR 47 270 #define FILE_DER 48 271 #define FILE_GUID 49 272 #define FILE_OFFSET 50 273 #define FILE_BEVARINT 51 274 #define FILE_LEVARINT 52 275 #define FILE_MSDOSDATE 53 276 #define FILE_LEMSDOSDATE 54 277 #define FILE_BEMSDOSDATE 55 278 #define FILE_MSDOSTIME 56 279 #define FILE_LEMSDOSTIME 57 280 #define FILE_BEMSDOSTIME 58 281 #define FILE_NAMES_SIZE 59 /* size of array to contain all names */ 282 283 #define IS_STRING(t) \ 284 ((t) == FILE_STRING || \ 285 (t) == FILE_PSTRING || \ 286 (t) == FILE_BESTRING16 || \ 287 (t) == FILE_LESTRING16 || \ 288 (t) == FILE_REGEX || \ 289 (t) == FILE_SEARCH || \ 290 (t) == FILE_INDIRECT || \ 291 (t) == FILE_NAME || \ 292 (t) == FILE_USE) 293 294 #define FILE_FMT_NONE 0 295 #define FILE_FMT_NUM 1 /* "cduxXi" */ 296 #define FILE_FMT_STR 2 /* "s" */ 297 #define FILE_FMT_QUAD 3 /* "ll" */ 298 #define FILE_FMT_FLOAT 4 /* "eEfFgG" */ 299 #define FILE_FMT_DOUBLE 5 /* "eEfFgG" */ 300 301 /* Word 3 */ 302 uint8_t in_op; /* operator for indirection */ 303 uint8_t mask_op; /* operator for mask */ 304 #ifdef ENABLE_CONDITIONALS 305 uint8_t cond; /* conditional type */ 306 #else 307 uint8_t dummy; 308 #endif 309 uint8_t factor_op; 310 #define FILE_FACTOR_OP_PLUS '+' 311 #define FILE_FACTOR_OP_MINUS '-' 312 #define FILE_FACTOR_OP_TIMES '*' 313 #define FILE_FACTOR_OP_DIV '/' 314 #define FILE_FACTOR_OP_NONE '\0' 315 316 #define FILE_OPS "&|^+-*/%" 317 #define FILE_OPAND 0 318 #define FILE_OPOR 1 319 #define FILE_OPXOR 2 320 #define FILE_OPADD 3 321 #define FILE_OPMINUS 4 322 #define FILE_OPMULTIPLY 5 323 #define FILE_OPDIVIDE 6 324 #define FILE_OPMODULO 7 325 #define FILE_OPS_MASK 0x07 /* mask for above ops */ 326 #define FILE_UNUSED_1 0x08 327 #define FILE_UNUSED_2 0x10 328 #define FILE_OPSIGNED 0x20 329 #define FILE_OPINVERSE 0x40 330 #define FILE_OPINDIRECT 0x80 331 332 #ifdef ENABLE_CONDITIONALS 333 #define COND_NONE 0 334 #define COND_IF 1 335 #define COND_ELIF 2 336 #define COND_ELSE 3 337 #endif /* ENABLE_CONDITIONALS */ 338 339 /* Word 4 */ 340 int32_t offset; /* offset to magic number */ 341 /* Word 5 */ 342 int32_t in_offset; /* offset from indirection */ 343 /* Word 6 */ 344 uint32_t lineno; /* line number in magic file */ 345 /* Word 7,8 */ 346 union { 347 uint64_t _mask; /* for use with numeric and date types */ 348 struct { 349 uint32_t _count; /* repeat/line count */ 350 uint32_t _flags; /* modifier flags */ 351 } _s; /* for use with string types */ 352 } _u; 353 #define num_mask _u._mask 354 #define str_range _u._s._count 355 #define str_flags _u._s._flags 356 /* Words 9-24 */ 357 union VALUETYPE value; /* either number or string */ 358 /* Words 25-40 */ 359 char desc[MAXDESC]; /* description */ 360 /* Words 41-60 */ 361 char mimetype[MAXMIME]; /* MIME type */ 362 /* Words 61-62 */ 363 char apple[8]; /* APPLE CREATOR/TYPE */ 364 /* Words 63-78 */ 365 char ext[64]; /* Popular extensions */ 366 }; 367 368 #define BIT(A) (1 << (A)) 369 #define STRING_COMPACT_WHITESPACE BIT(0) 370 #define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1) 371 #define STRING_IGNORE_LOWERCASE BIT(2) 372 #define STRING_IGNORE_UPPERCASE BIT(3) 373 #define REGEX_OFFSET_START BIT(4) 374 #define STRING_TEXTTEST BIT(5) 375 #define STRING_BINTEST BIT(6) 376 #define PSTRING_1_BE BIT(7) 377 #define PSTRING_1_LE BIT(7) 378 #define PSTRING_2_BE BIT(8) 379 #define PSTRING_2_LE BIT(9) 380 #define PSTRING_4_BE BIT(10) 381 #define PSTRING_4_LE BIT(11) 382 #define REGEX_LINE_COUNT BIT(11) 383 #define PSTRING_LEN \ 384 (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE) 385 #define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12) 386 #define STRING_TRIM BIT(13) 387 #define STRING_FULL_WORD BIT(14) 388 #define CHAR_COMPACT_WHITESPACE 'W' 389 #define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w' 390 #define CHAR_IGNORE_LOWERCASE 'c' 391 #define CHAR_IGNORE_UPPERCASE 'C' 392 #define CHAR_REGEX_OFFSET_START 's' 393 #define CHAR_TEXTTEST 't' 394 #define CHAR_TRIM 'T' 395 #define CHAR_FULL_WORD 'f' 396 #define CHAR_BINTEST 'b' 397 #define CHAR_PSTRING_1_BE 'B' 398 #define CHAR_PSTRING_1_LE 'B' 399 #define CHAR_PSTRING_2_BE 'H' 400 #define CHAR_PSTRING_2_LE 'h' 401 #define CHAR_PSTRING_4_BE 'L' 402 #define CHAR_PSTRING_4_LE 'l' 403 #define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J' 404 #define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE) 405 #define STRING_DEFAULT_RANGE 100 406 407 #define INDIRECT_RELATIVE BIT(0) 408 #define CHAR_INDIRECT_RELATIVE 'r' 409 410 /* list of magic entries */ 411 struct mlist { 412 struct magic *magic; /* array of magic entries */ 413 file_regex_t **magic_rxcomp; /* array of compiled regexps */ 414 size_t nmagic; /* number of entries in array */ 415 void *map; /* internal resources used by entry */ 416 struct mlist *next, *prev; 417 }; 418 419 #ifdef __cplusplus 420 #define CAST(T, b) static_cast<T>(b) 421 #define RCAST(T, b) reinterpret_cast<T>(b) 422 #define CCAST(T, b) const_cast<T>(b) 423 #else 424 #define CAST(T, b) ((T)(b)) 425 #define RCAST(T, b) ((T)(uintptr_t)(b)) 426 #define CCAST(T, b) ((T)(uintptr_t)(b)) 427 #endif 428 429 struct level_info { 430 int32_t off; 431 int got_match; 432 #ifdef ENABLE_CONDITIONALS 433 int last_match; 434 int last_cond; /* used for error checking by parse() */ 435 #endif 436 }; 437 438 struct cont { 439 size_t len; 440 struct level_info *li; 441 }; 442 443 #define MAGIC_SETS 2 444 445 struct magic_set { 446 struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */ 447 struct cont c; 448 struct out { 449 char *buf; /* Accumulation buffer */ 450 size_t blen; /* Length of buffer */ 451 char *pbuf; /* Printable buffer */ 452 } o; 453 uint32_t offset; /* a copy of m->offset while we */ 454 /* are working on the magic entry */ 455 uint32_t eoffset; /* offset from end of file */ 456 int error; 457 int flags; /* Control magic tests. */ 458 int event_flags; /* Note things that happened. */ 459 #define EVENT_HAD_ERR 0x01 460 const char *file; 461 size_t line; /* current magic line number */ 462 mode_t mode; /* copy of current stat mode */ 463 464 /* data for searches */ 465 struct { 466 const char *s; /* start of search in original source */ 467 size_t s_len; /* length of search region */ 468 size_t offset; /* starting offset in source: XXX - should this be off_t? */ 469 size_t rm_len; /* match length */ 470 } search; 471 472 /* FIXME: Make the string dynamically allocated so that e.g. 473 strings matched in files can be longer than MAXstring */ 474 union VALUETYPE ms_value; /* either number or string */ 475 uint16_t indir_max; 476 uint16_t name_max; 477 uint16_t elf_shnum_max; 478 uint16_t elf_phnum_max; 479 uint16_t elf_notes_max; 480 uint16_t regex_max; 481 size_t bytes_max; /* number of bytes to read from file */ 482 size_t encoding_max; /* bytes to look for encoding */ 483 #ifndef FILE_BYTES_MAX 484 # define FILE_BYTES_MAX (1024 * 1024) /* how much of the file to look at */ 485 #endif 486 #define FILE_ELF_NOTES_MAX 256 487 #define FILE_ELF_PHNUM_MAX 2048 488 #define FILE_ELF_SHNUM_MAX 32768 489 #define FILE_INDIR_MAX 50 490 #define FILE_NAME_MAX 50 491 #define FILE_REGEX_MAX 8192 492 #define FILE_ENCODING_MAX (64 * 1024) 493 #if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE) 494 #define USE_C_LOCALE 495 locale_t c_lc_ctype; 496 #define file_locale_used 497 #else 498 #define file_locale_used __attribute__((__unused__)) 499 #endif 500 }; 501 502 /* Type for Unicode characters */ 503 typedef unsigned long file_unichar_t; 504 505 struct stat; 506 #define FILE_T_LOCAL 1 507 #define FILE_T_WINDOWS 2 508 protected const char *file_fmtdatetime(char *, size_t, uint64_t, int); 509 protected const char *file_fmtdate(char *, size_t, uint16_t); 510 protected const char *file_fmttime(char *, size_t, uint16_t); 511 protected const char *file_fmtvarint(const unsigned char *, int, char *, 512 size_t); 513 protected struct magic_set *file_ms_alloc(int); 514 protected void file_ms_free(struct magic_set *); 515 protected int file_default(struct magic_set *, size_t); 516 protected int file_buffer(struct magic_set *, int, struct stat *, const char *, 517 const void *, size_t); 518 protected int file_fsmagic(struct magic_set *, const char *, struct stat *); 519 protected int file_pipe2file(struct magic_set *, int, const void *, size_t); 520 protected int file_vprintf(struct magic_set *, const char *, va_list) 521 __attribute__((__format__(__printf__, 2, 0))); 522 protected int file_separator(struct magic_set *); 523 protected char *file_copystr(char *, size_t, size_t, const char *); 524 protected int file_checkfmt(char *, size_t, const char *); 525 protected size_t file_printedlen(const struct magic_set *); 526 protected int file_print_guid(char *, size_t, const uint64_t *); 527 protected int file_parse_guid(const char *, uint64_t *); 528 protected int file_replace(struct magic_set *, const char *, const char *); 529 protected int file_printf(struct magic_set *, const char *, ...) 530 __attribute__((__format__(__printf__, 2, 3))); 531 protected int file_reset(struct magic_set *, int); 532 protected int file_tryelf(struct magic_set *, const struct buffer *); 533 protected int file_trycdf(struct magic_set *, const struct buffer *); 534 #if HAVE_FORK 535 protected int file_zmagic(struct magic_set *, const struct buffer *, 536 const char *); 537 #endif 538 protected int file_ascmagic(struct magic_set *, const struct buffer *, 539 int); 540 protected int file_ascmagic_with_encoding(struct magic_set *, 541 const struct buffer *, file_unichar_t *, size_t, const char *, const char *, int); 542 protected int file_encoding(struct magic_set *, const struct buffer *, 543 file_unichar_t **, size_t *, const char **, const char **, const char **); 544 protected int file_is_json(struct magic_set *, const struct buffer *); 545 protected int file_is_csv(struct magic_set *, const struct buffer *, int); 546 protected int file_is_tar(struct magic_set *, const struct buffer *); 547 protected int file_softmagic(struct magic_set *, const struct buffer *, 548 uint16_t *, uint16_t *, int, int); 549 protected int file_apprentice(struct magic_set *, const char *, int); 550 protected int buffer_apprentice(struct magic_set *, struct magic **, 551 size_t *, size_t); 552 protected int file_magicfind(struct magic_set *, const char *, struct mlist *); 553 protected uint64_t file_signextend(struct magic_set *, struct magic *, 554 uint64_t); 555 protected uintmax_t file_varint2uintmax_t(const unsigned char *, int, size_t *); 556 557 protected void file_badread(struct magic_set *); 558 protected void file_badseek(struct magic_set *); 559 protected void file_oomem(struct magic_set *, size_t); 560 protected void file_error(struct magic_set *, int, const char *, ...) 561 __attribute__((__format__(__printf__, 3, 4))); 562 protected void file_magerror(struct magic_set *, const char *, ...) 563 __attribute__((__format__(__printf__, 2, 3))); 564 protected void file_magwarn(struct magic_set *, const char *, ...) 565 __attribute__((__format__(__printf__, 2, 3))); 566 protected void file_mdump(struct magic *); 567 protected void file_showstr(FILE *, const char *, size_t); 568 protected size_t file_mbswidth(struct magic_set *, const char *); 569 protected const char *file_getbuffer(struct magic_set *); 570 protected ssize_t sread(int, void *, size_t, int); 571 protected int file_check_mem(struct magic_set *, unsigned int); 572 protected int file_looks_utf8(const unsigned char *, size_t, file_unichar_t *, 573 size_t *); 574 protected size_t file_pstring_length_size(struct magic_set *, 575 const struct magic *); 576 protected size_t file_pstring_get_length(struct magic_set *, 577 const struct magic *, const char *); 578 public char * file_printable(struct magic_set *, char *, size_t, 579 const char *, size_t); 580 #ifdef __EMX__ 581 protected int file_os2_apptype(struct magic_set *, const char *, const void *, 582 size_t); 583 #endif /* __EMX__ */ 584 protected int file_pipe_closexec(int *); 585 protected int file_clear_closexec(int); 586 protected char *file_strtrim(char *); 587 588 protected void buffer_init(struct buffer *, int, const struct stat *, 589 const void *, size_t); 590 protected void buffer_fini(struct buffer *); 591 protected int buffer_fill(const struct buffer *); 592 593 594 595 protected int file_regcomp(struct magic_set *, file_regex_t *, const char *, 596 int); 597 protected int file_regexec(struct magic_set *, file_regex_t *, const char *, 598 size_t, regmatch_t *, int); 599 protected void file_regfree(file_regex_t *); 600 601 typedef struct { 602 char *buf; 603 size_t blen; 604 uint32_t offset; 605 } file_pushbuf_t; 606 607 protected file_pushbuf_t *file_push_buffer(struct magic_set *); 608 protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *); 609 610 #ifndef COMPILE_ONLY 611 extern const char *file_names[]; 612 extern const size_t file_nnames; 613 #endif 614 615 #ifndef HAVE_PREAD 616 ssize_t pread(int, void *, size_t, off_t); 617 #endif 618 #ifndef HAVE_VASPRINTF 619 int vasprintf(char **, const char *, va_list); 620 #endif 621 #ifndef HAVE_ASPRINTF 622 int asprintf(char **, const char *, ...); 623 #endif 624 #ifndef HAVE_DPRINTF 625 int dprintf(int, const char *, ...); 626 #endif 627 628 #ifndef HAVE_STRLCPY 629 size_t strlcpy(char *, const char *, size_t); 630 #endif 631 #ifndef HAVE_STRLCAT 632 size_t strlcat(char *, const char *, size_t); 633 #endif 634 #ifndef HAVE_STRCASESTR 635 char *strcasestr(const char *, const char *); 636 #endif 637 #ifndef HAVE_GETLINE 638 ssize_t getline(char **, size_t *, FILE *); 639 ssize_t getdelim(char **, size_t *, int, FILE *); 640 #endif 641 #ifndef HAVE_CTIME_R 642 char *ctime_r(const time_t *, char *); 643 #endif 644 #ifndef HAVE_ASCTIME_R 645 char *asctime_r(const struct tm *, char *); 646 #endif 647 #ifndef HAVE_GMTIME_R 648 struct tm *gmtime_r(const time_t *, struct tm *); 649 #endif 650 #ifndef HAVE_LOCALTIME_R 651 struct tm *localtime_r(const time_t *, struct tm *); 652 #endif 653 #ifndef HAVE_FMTCHECK 654 const char *fmtcheck(const char *, const char *) 655 __attribute__((__format_arg__(2))); 656 #endif 657 658 #ifdef HAVE_LIBSECCOMP 659 // basic filter 660 // this mode should not interfere with normal operations 661 // only some dangerous syscalls are blacklisted 662 int enable_sandbox_basic(void); 663 664 // enhanced filter 665 // this mode allows only the necessary syscalls used during normal operation 666 // extensive testing required !!! 667 int enable_sandbox_full(void); 668 #endif 669 670 protected const char *file_getprogname(void); 671 protected void file_setprogname(const char *); 672 protected void file_err(int, const char *, ...) 673 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 674 protected void file_errx(int, const char *, ...) 675 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 676 protected void file_warn(const char *, ...) 677 __attribute__((__format__(__printf__, 1, 2))); 678 protected void file_warnx(const char *, ...) 679 __attribute__((__format__(__printf__, 1, 2))); 680 681 #if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK) 682 #define QUICK 683 #endif 684 685 #ifndef O_BINARY 686 #define O_BINARY 0 687 #endif 688 #ifndef O_NONBLOCK 689 #define O_NONBLOCK 0 690 #endif 691 692 #ifndef __cplusplus 693 #if defined(__GNUC__) && (__GNUC__ >= 3) 694 #define FILE_RCSID(id) \ 695 static const char rcsid[] __attribute__((__used__)) = id; 696 #else 697 #define FILE_RCSID(id) \ 698 static const char *rcsid(const char *p) { \ 699 return rcsid(p = id); \ 700 } 701 #endif 702 #else 703 #define FILE_RCSID(id) 704 #endif 705 #ifndef __RCSID 706 #define __RCSID(a) 707 #endif 708 709 #endif /* __file_h__ */ 710