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 1.227 2021/06/30 10:08:48 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 92 #define ENABLE_CONDITIONALS 93 94 #ifndef MAGIC 95 #define MAGIC "/etc/magic" 96 #endif 97 98 #if defined(__EMX__) || defined (WIN32) 99 #define PATHSEP ';' 100 #else 101 #define PATHSEP ':' 102 #endif 103 104 #define private static 105 106 #if HAVE_VISIBILITY && !defined(WIN32) 107 #define public __attribute__ ((__visibility__("default"))) 108 #ifndef protected 109 #define protected __attribute__ ((__visibility__("hidden"))) 110 #endif 111 #else 112 #define public 113 #ifndef protected 114 #define protected 115 #endif 116 #endif 117 118 #ifndef __arraycount 119 #define __arraycount(a) (sizeof(a) / sizeof(a[0])) 120 #endif 121 122 #ifndef __GNUC_PREREQ__ 123 #ifdef __GNUC__ 124 #define __GNUC_PREREQ__(x, y) \ 125 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 126 (__GNUC__ > (x))) 127 #else 128 #define __GNUC_PREREQ__(x, y) 0 129 #endif 130 #endif 131 132 #ifndef __GNUC__ 133 #ifndef __attribute__ 134 #define __attribute__(a) 135 #endif 136 #endif 137 138 #ifndef MIN 139 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 140 #endif 141 142 #ifndef MAX 143 #define MAX(a,b) (((a) > (b)) ? (a) : (b)) 144 #endif 145 146 #ifndef O_CLOEXEC 147 # define O_CLOEXEC 0 148 #endif 149 150 #ifndef FD_CLOEXEC 151 # define FD_CLOEXEC 1 152 #endif 153 154 #define FILE_BADSIZE CAST(size_t, ~0ul) 155 #define MAXDESC 64 /* max len of text description/MIME type */ 156 #define MAXMIME 80 /* max len of text MIME type */ 157 #define MAXstring 128 /* max len of "string" types */ 158 159 #define MAGICNO 0xF11E041C 160 #define VERSIONNO 16 161 #define FILE_MAGICSIZE 376 162 163 #define FILE_GUID_SIZE sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX") 164 165 #define FILE_LOAD 0 166 #define FILE_CHECK 1 167 #define FILE_COMPILE 2 168 #define FILE_LIST 3 169 170 struct buffer { 171 int fd; 172 struct stat st; 173 const void *fbuf; 174 size_t flen; 175 off_t eoff; 176 void *ebuf; 177 size_t elen; 178 }; 179 180 union VALUETYPE { 181 uint8_t b; 182 uint16_t h; 183 uint32_t l; 184 uint64_t q; 185 uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */ 186 uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */ 187 uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */ 188 char s[MAXstring]; /* the search string or regex pattern */ 189 unsigned char us[MAXstring]; 190 uint64_t guid[2]; 191 float f; 192 double d; 193 }; 194 195 struct magic { 196 /* Word 1 */ 197 uint16_t cont_level; /* level of ">" */ 198 uint8_t flag; 199 #define INDIR 0x01 /* if '(...)' appears */ 200 #define OFFADD 0x02 /* if '>&' or '>...(&' appears */ 201 #define INDIROFFADD 0x04 /* if '>&(' appears */ 202 #define UNSIGNED 0x08 /* comparison is unsigned */ 203 #define NOSPACE 0x10 /* suppress space character before output */ 204 #define BINTEST 0x20 /* test is for a binary type (set only 205 for top-level tests) */ 206 #define TEXTTEST 0x40 /* for passing to file_softmagic */ 207 #define OFFNEGATIVE 0x80 /* relative to the end of file */ 208 209 uint8_t factor; 210 211 /* Word 2 */ 212 uint8_t reln; /* relation (0=eq, '>'=gt, etc) */ 213 uint8_t vallen; /* length of string value, if any */ 214 uint8_t type; /* comparison type (FILE_*) */ 215 uint8_t in_type; /* type of indirection */ 216 #define FILE_INVALID 0 217 #define FILE_BYTE 1 218 #define FILE_SHORT 2 219 #define FILE_DEFAULT 3 220 #define FILE_LONG 4 221 #define FILE_STRING 5 222 #define FILE_DATE 6 223 #define FILE_BESHORT 7 224 #define FILE_BELONG 8 225 #define FILE_BEDATE 9 226 #define FILE_LESHORT 10 227 #define FILE_LELONG 11 228 #define FILE_LEDATE 12 229 #define FILE_PSTRING 13 230 #define FILE_LDATE 14 231 #define FILE_BELDATE 15 232 #define FILE_LELDATE 16 233 #define FILE_REGEX 17 234 #define FILE_BESTRING16 18 235 #define FILE_LESTRING16 19 236 #define FILE_SEARCH 20 237 #define FILE_MEDATE 21 238 #define FILE_MELDATE 22 239 #define FILE_MELONG 23 240 #define FILE_QUAD 24 241 #define FILE_LEQUAD 25 242 #define FILE_BEQUAD 26 243 #define FILE_QDATE 27 244 #define FILE_LEQDATE 28 245 #define FILE_BEQDATE 29 246 #define FILE_QLDATE 30 247 #define FILE_LEQLDATE 31 248 #define FILE_BEQLDATE 32 249 #define FILE_FLOAT 33 250 #define FILE_BEFLOAT 34 251 #define FILE_LEFLOAT 35 252 #define FILE_DOUBLE 36 253 #define FILE_BEDOUBLE 37 254 #define FILE_LEDOUBLE 38 255 #define FILE_BEID3 39 256 #define FILE_LEID3 40 257 #define FILE_INDIRECT 41 258 #define FILE_QWDATE 42 259 #define FILE_LEQWDATE 43 260 #define FILE_BEQWDATE 44 261 #define FILE_NAME 45 262 #define FILE_USE 46 263 #define FILE_CLEAR 47 264 #define FILE_DER 48 265 #define FILE_GUID 49 266 #define FILE_OFFSET 50 267 #define FILE_BEVARINT 51 268 #define FILE_LEVARINT 52 269 #define FILE_NAMES_SIZE 53 /* size of array to contain all names */ 270 271 #define IS_STRING(t) \ 272 ((t) == FILE_STRING || \ 273 (t) == FILE_PSTRING || \ 274 (t) == FILE_BESTRING16 || \ 275 (t) == FILE_LESTRING16 || \ 276 (t) == FILE_REGEX || \ 277 (t) == FILE_SEARCH || \ 278 (t) == FILE_INDIRECT || \ 279 (t) == FILE_NAME || \ 280 (t) == FILE_USE) 281 282 #define FILE_FMT_NONE 0 283 #define FILE_FMT_NUM 1 /* "cduxXi" */ 284 #define FILE_FMT_STR 2 /* "s" */ 285 #define FILE_FMT_QUAD 3 /* "ll" */ 286 #define FILE_FMT_FLOAT 4 /* "eEfFgG" */ 287 #define FILE_FMT_DOUBLE 5 /* "eEfFgG" */ 288 289 /* Word 3 */ 290 uint8_t in_op; /* operator for indirection */ 291 uint8_t mask_op; /* operator for mask */ 292 #ifdef ENABLE_CONDITIONALS 293 uint8_t cond; /* conditional type */ 294 #else 295 uint8_t dummy; 296 #endif 297 uint8_t factor_op; 298 #define FILE_FACTOR_OP_PLUS '+' 299 #define FILE_FACTOR_OP_MINUS '-' 300 #define FILE_FACTOR_OP_TIMES '*' 301 #define FILE_FACTOR_OP_DIV '/' 302 #define FILE_FACTOR_OP_NONE '\0' 303 304 #define FILE_OPS "&|^+-*/%" 305 #define FILE_OPAND 0 306 #define FILE_OPOR 1 307 #define FILE_OPXOR 2 308 #define FILE_OPADD 3 309 #define FILE_OPMINUS 4 310 #define FILE_OPMULTIPLY 5 311 #define FILE_OPDIVIDE 6 312 #define FILE_OPMODULO 7 313 #define FILE_OPS_MASK 0x07 /* mask for above ops */ 314 #define FILE_UNUSED_1 0x08 315 #define FILE_UNUSED_2 0x10 316 #define FILE_OPSIGNED 0x20 317 #define FILE_OPINVERSE 0x40 318 #define FILE_OPINDIRECT 0x80 319 320 #ifdef ENABLE_CONDITIONALS 321 #define COND_NONE 0 322 #define COND_IF 1 323 #define COND_ELIF 2 324 #define COND_ELSE 3 325 #endif /* ENABLE_CONDITIONALS */ 326 327 /* Word 4 */ 328 int32_t offset; /* offset to magic number */ 329 /* Word 5 */ 330 int32_t in_offset; /* offset from indirection */ 331 /* Word 6 */ 332 uint32_t lineno; /* line number in magic file */ 333 /* Word 7,8 */ 334 union { 335 uint64_t _mask; /* for use with numeric and date types */ 336 struct { 337 uint32_t _count; /* repeat/line count */ 338 uint32_t _flags; /* modifier flags */ 339 } _s; /* for use with string types */ 340 } _u; 341 #define num_mask _u._mask 342 #define str_range _u._s._count 343 #define str_flags _u._s._flags 344 /* Words 9-24 */ 345 union VALUETYPE value; /* either number or string */ 346 /* Words 25-40 */ 347 char desc[MAXDESC]; /* description */ 348 /* Words 41-60 */ 349 char mimetype[MAXMIME]; /* MIME type */ 350 /* Words 61-62 */ 351 char apple[8]; /* APPLE CREATOR/TYPE */ 352 /* Words 63-78 */ 353 char ext[64]; /* Popular extensions */ 354 }; 355 356 #define BIT(A) (1 << (A)) 357 #define STRING_COMPACT_WHITESPACE BIT(0) 358 #define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1) 359 #define STRING_IGNORE_LOWERCASE BIT(2) 360 #define STRING_IGNORE_UPPERCASE BIT(3) 361 #define REGEX_OFFSET_START BIT(4) 362 #define STRING_TEXTTEST BIT(5) 363 #define STRING_BINTEST BIT(6) 364 #define PSTRING_1_BE BIT(7) 365 #define PSTRING_1_LE BIT(7) 366 #define PSTRING_2_BE BIT(8) 367 #define PSTRING_2_LE BIT(9) 368 #define PSTRING_4_BE BIT(10) 369 #define PSTRING_4_LE BIT(11) 370 #define REGEX_LINE_COUNT BIT(11) 371 #define PSTRING_LEN \ 372 (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE) 373 #define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12) 374 #define STRING_TRIM BIT(13) 375 #define STRING_FULL_WORD BIT(14) 376 #define CHAR_COMPACT_WHITESPACE 'W' 377 #define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w' 378 #define CHAR_IGNORE_LOWERCASE 'c' 379 #define CHAR_IGNORE_UPPERCASE 'C' 380 #define CHAR_REGEX_OFFSET_START 's' 381 #define CHAR_TEXTTEST 't' 382 #define CHAR_TRIM 'T' 383 #define CHAR_FULL_WORD 'f' 384 #define CHAR_BINTEST 'b' 385 #define CHAR_PSTRING_1_BE 'B' 386 #define CHAR_PSTRING_1_LE 'B' 387 #define CHAR_PSTRING_2_BE 'H' 388 #define CHAR_PSTRING_2_LE 'h' 389 #define CHAR_PSTRING_4_BE 'L' 390 #define CHAR_PSTRING_4_LE 'l' 391 #define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J' 392 #define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE) 393 #define STRING_DEFAULT_RANGE 100 394 395 #define INDIRECT_RELATIVE BIT(0) 396 #define CHAR_INDIRECT_RELATIVE 'r' 397 398 /* list of magic entries */ 399 struct mlist { 400 struct magic *magic; /* array of magic entries */ 401 uint32_t nmagic; /* number of entries in array */ 402 void *map; /* internal resources used by entry */ 403 struct mlist *next, *prev; 404 }; 405 406 #ifdef __cplusplus 407 #define CAST(T, b) static_cast<T>(b) 408 #define RCAST(T, b) reinterpret_cast<T>(b) 409 #define CCAST(T, b) const_cast<T>(b) 410 #else 411 #define CAST(T, b) ((T)(b)) 412 #define RCAST(T, b) ((T)(uintptr_t)(b)) 413 #define CCAST(T, b) ((T)(uintptr_t)(b)) 414 #endif 415 416 struct level_info { 417 int32_t off; 418 int got_match; 419 #ifdef ENABLE_CONDITIONALS 420 int last_match; 421 int last_cond; /* used for error checking by parse() */ 422 #endif 423 }; 424 425 struct cont { 426 size_t len; 427 struct level_info *li; 428 }; 429 430 #define MAGIC_SETS 2 431 432 struct magic_set { 433 struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */ 434 struct cont c; 435 struct out { 436 char *buf; /* Accumulation buffer */ 437 size_t blen; /* Length of buffer */ 438 char *pbuf; /* Printable buffer */ 439 } o; 440 uint32_t offset; /* a copy of m->offset while we */ 441 /* are working on the magic entry */ 442 uint32_t eoffset; /* offset from end of file */ 443 int error; 444 int flags; /* Control magic tests. */ 445 int event_flags; /* Note things that happened. */ 446 #define EVENT_HAD_ERR 0x01 447 const char *file; 448 size_t line; /* current magic line number */ 449 mode_t mode; /* copy of current stat mode */ 450 451 /* data for searches */ 452 struct { 453 const char *s; /* start of search in original source */ 454 size_t s_len; /* length of search region */ 455 size_t offset; /* starting offset in source: XXX - should this be off_t? */ 456 size_t rm_len; /* match length */ 457 } search; 458 459 /* FIXME: Make the string dynamically allocated so that e.g. 460 strings matched in files can be longer than MAXstring */ 461 union VALUETYPE ms_value; /* either number or string */ 462 uint16_t indir_max; 463 uint16_t name_max; 464 uint16_t elf_shnum_max; 465 uint16_t elf_phnum_max; 466 uint16_t elf_notes_max; 467 uint16_t regex_max; 468 size_t bytes_max; /* number of bytes to read from file */ 469 size_t encoding_max; /* bytes to look for encoding */ 470 #ifndef FILE_BYTES_MAX 471 # define FILE_BYTES_MAX (1024 * 1024) /* how much of the file to look at */ 472 #endif 473 #define FILE_ELF_NOTES_MAX 256 474 #define FILE_ELF_PHNUM_MAX 2048 475 #define FILE_ELF_SHNUM_MAX 32768 476 #define FILE_INDIR_MAX 50 477 #define FILE_NAME_MAX 50 478 #define FILE_REGEX_MAX 8192 479 #define FILE_ENCODING_MAX (64 * 1024) 480 }; 481 482 /* Type for Unicode characters */ 483 typedef unsigned long file_unichar_t; 484 485 struct stat; 486 #define FILE_T_LOCAL 1 487 #define FILE_T_WINDOWS 2 488 protected const char *file_fmttime(char *, size_t, uint64_t, int); 489 protected const char *file_fmtvarint(const unsigned char *, int, char *, 490 size_t); 491 protected struct magic_set *file_ms_alloc(int); 492 protected void file_ms_free(struct magic_set *); 493 protected int file_default(struct magic_set *, size_t); 494 protected int file_buffer(struct magic_set *, int, struct stat *, const char *, 495 const void *, size_t); 496 protected int file_fsmagic(struct magic_set *, const char *, struct stat *); 497 protected int file_pipe2file(struct magic_set *, int, const void *, size_t); 498 protected int file_vprintf(struct magic_set *, const char *, va_list) 499 __attribute__((__format__(__printf__, 2, 0))); 500 protected int file_separator(struct magic_set *); 501 protected char *file_copystr(char *, size_t, size_t, const char *); 502 protected int file_checkfmt(char *, size_t, const char *); 503 protected size_t file_printedlen(const struct magic_set *); 504 protected int file_print_guid(char *, size_t, const uint64_t *); 505 protected int file_parse_guid(const char *, uint64_t *); 506 protected int file_replace(struct magic_set *, const char *, const char *); 507 protected int file_printf(struct magic_set *, const char *, ...) 508 __attribute__((__format__(__printf__, 2, 3))); 509 protected int file_reset(struct magic_set *, int); 510 protected int file_tryelf(struct magic_set *, const struct buffer *); 511 protected int file_trycdf(struct magic_set *, const struct buffer *); 512 #if HAVE_FORK 513 protected int file_zmagic(struct magic_set *, const struct buffer *, 514 const char *); 515 #endif 516 protected int file_ascmagic(struct magic_set *, const struct buffer *, 517 int); 518 protected int file_ascmagic_with_encoding(struct magic_set *, 519 const struct buffer *, file_unichar_t *, size_t, const char *, const char *, int); 520 protected int file_encoding(struct magic_set *, const struct buffer *, 521 file_unichar_t **, size_t *, const char **, const char **, const char **); 522 protected int file_is_json(struct magic_set *, const struct buffer *); 523 protected int file_is_csv(struct magic_set *, const struct buffer *, int); 524 protected int file_is_tar(struct magic_set *, const struct buffer *); 525 protected int file_softmagic(struct magic_set *, const struct buffer *, 526 uint16_t *, uint16_t *, int, int); 527 protected int file_apprentice(struct magic_set *, const char *, int); 528 protected int buffer_apprentice(struct magic_set *, struct magic **, 529 size_t *, size_t); 530 protected int file_magicfind(struct magic_set *, const char *, struct mlist *); 531 protected uint64_t file_signextend(struct magic_set *, struct magic *, 532 uint64_t); 533 protected uintmax_t file_varint2uintmax_t(const unsigned char *, int, size_t *); 534 535 protected void file_badread(struct magic_set *); 536 protected void file_badseek(struct magic_set *); 537 protected void file_oomem(struct magic_set *, size_t); 538 protected void file_error(struct magic_set *, int, const char *, ...) 539 __attribute__((__format__(__printf__, 3, 4))); 540 protected void file_magerror(struct magic_set *, const char *, ...) 541 __attribute__((__format__(__printf__, 2, 3))); 542 protected void file_magwarn(struct magic_set *, const char *, ...) 543 __attribute__((__format__(__printf__, 2, 3))); 544 protected void file_mdump(struct magic *); 545 protected void file_showstr(FILE *, const char *, size_t); 546 protected size_t file_mbswidth(const char *); 547 protected const char *file_getbuffer(struct magic_set *); 548 protected ssize_t sread(int, void *, size_t, int); 549 protected int file_check_mem(struct magic_set *, unsigned int); 550 protected int file_looks_utf8(const unsigned char *, size_t, file_unichar_t *, 551 size_t *); 552 protected size_t file_pstring_length_size(struct magic_set *, 553 const struct magic *); 554 protected size_t file_pstring_get_length(struct magic_set *, 555 const struct magic *, const char *); 556 protected char * file_printable(struct magic_set *, char *, size_t, 557 const char *, size_t); 558 #ifdef __EMX__ 559 protected int file_os2_apptype(struct magic_set *, const char *, const void *, 560 size_t); 561 #endif /* __EMX__ */ 562 protected int file_pipe_closexec(int *); 563 protected int file_clear_closexec(int); 564 protected char *file_strtrim(char *); 565 566 protected void buffer_init(struct buffer *, int, const struct stat *, 567 const void *, size_t); 568 protected void buffer_fini(struct buffer *); 569 protected int buffer_fill(const struct buffer *); 570 571 #include <locale.h> 572 #if defined(HAVE_XLOCALE_H) 573 #include <xlocale.h> 574 #endif 575 576 typedef struct { 577 const char *pat; 578 #if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE) 579 #define USE_C_LOCALE 580 locale_t old_lc_ctype; 581 locale_t c_lc_ctype; 582 #else 583 char *old_lc_ctype; 584 #endif 585 int rc; 586 regex_t rx; 587 } file_regex_t; 588 589 protected int file_regcomp(file_regex_t *, const char *, int); 590 protected int file_regexec(file_regex_t *, const char *, size_t, regmatch_t *, 591 int); 592 protected void file_regfree(file_regex_t *); 593 protected void file_regerror(file_regex_t *, int, struct magic_set *); 594 595 typedef struct { 596 char *buf; 597 size_t blen; 598 uint32_t offset; 599 } file_pushbuf_t; 600 601 protected file_pushbuf_t *file_push_buffer(struct magic_set *); 602 protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *); 603 604 #ifndef COMPILE_ONLY 605 extern const char *file_names[]; 606 extern const size_t file_nnames; 607 #endif 608 609 #ifndef HAVE_PREAD 610 ssize_t pread(int, void *, size_t, off_t); 611 #endif 612 #ifndef HAVE_VASPRINTF 613 int vasprintf(char **, const char *, va_list); 614 #endif 615 #ifndef HAVE_ASPRINTF 616 int asprintf(char **, const char *, ...); 617 #endif 618 #ifndef HAVE_DPRINTF 619 int dprintf(int, const char *, ...); 620 #endif 621 622 #ifndef HAVE_STRLCPY 623 size_t strlcpy(char *, const char *, size_t); 624 #endif 625 #ifndef HAVE_STRLCAT 626 size_t strlcat(char *, const char *, size_t); 627 #endif 628 #ifndef HAVE_STRCASESTR 629 char *strcasestr(const char *, const char *); 630 #endif 631 #ifndef HAVE_GETLINE 632 ssize_t getline(char **, size_t *, FILE *); 633 ssize_t getdelim(char **, size_t *, int, FILE *); 634 #endif 635 #ifndef HAVE_CTIME_R 636 char *ctime_r(const time_t *, char *); 637 #endif 638 #ifndef HAVE_ASCTIME_R 639 char *asctime_r(const struct tm *, char *); 640 #endif 641 #ifndef HAVE_GMTIME_R 642 struct tm *gmtime_r(const time_t *, struct tm *); 643 #endif 644 #ifndef HAVE_LOCALTIME_R 645 struct tm *localtime_r(const time_t *, struct tm *); 646 #endif 647 #ifndef HAVE_FMTCHECK 648 const char *fmtcheck(const char *, const char *) 649 __attribute__((__format_arg__(2))); 650 #endif 651 652 #ifdef HAVE_LIBSECCOMP 653 // basic filter 654 // this mode should not interfere with normal operations 655 // only some dangerous syscalls are blacklisted 656 int enable_sandbox_basic(void); 657 658 // enhanced filter 659 // this mode allows only the necessary syscalls used during normal operation 660 // extensive testing required !!! 661 int enable_sandbox_full(void); 662 #endif 663 664 protected const char *file_getprogname(void); 665 protected void file_setprogname(const char *); 666 protected void file_err(int, const char *, ...) 667 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 668 protected void file_errx(int, const char *, ...) 669 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 670 protected void file_warn(const char *, ...) 671 __attribute__((__format__(__printf__, 1, 2))); 672 protected void file_warnx(const char *, ...) 673 __attribute__((__format__(__printf__, 1, 2))); 674 675 #if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK) 676 #define QUICK 677 #endif 678 679 #ifndef O_BINARY 680 #define O_BINARY 0 681 #endif 682 #ifndef O_NONBLOCK 683 #define O_NONBLOCK 0 684 #endif 685 686 #ifndef __cplusplus 687 #if defined(__GNUC__) && (__GNUC__ >= 3) 688 #define FILE_RCSID(id) \ 689 static const char rcsid[] __attribute__((__used__)) = id; 690 #else 691 #define FILE_RCSID(id) \ 692 static const char *rcsid(const char *p) { \ 693 return rcsid(p = id); \ 694 } 695 #endif 696 #else 697 #define FILE_RCSID(id) 698 #endif 699 #ifndef __RCSID 700 #define __RCSID(a) 701 #endif 702 703 #endif /* __file_h__ */ 704