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 1.225 2021/02/05 22:29:07 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 <wchar.h> 92 93 #define ENABLE_CONDITIONALS 94 95 #ifndef MAGIC 96 #define MAGIC "/etc/magic" 97 #endif 98 99 #if defined(__EMX__) || defined (WIN32) 100 #define PATHSEP ';' 101 #else 102 #define PATHSEP ':' 103 #endif 104 105 #define private static 106 107 #if HAVE_VISIBILITY && !defined(WIN32) 108 #define public __attribute__ ((__visibility__("default"))) 109 #ifndef protected 110 #define protected __attribute__ ((__visibility__("hidden"))) 111 #endif 112 #else 113 #define public 114 #ifndef protected 115 #define protected 116 #endif 117 #endif 118 119 #ifndef __arraycount 120 #define __arraycount(a) (sizeof(a) / sizeof(a[0])) 121 #endif 122 123 #ifndef __GNUC_PREREQ__ 124 #ifdef __GNUC__ 125 #define __GNUC_PREREQ__(x, y) \ 126 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 127 (__GNUC__ > (x))) 128 #else 129 #define __GNUC_PREREQ__(x, y) 0 130 #endif 131 #endif 132 133 #ifndef __GNUC__ 134 #ifndef __attribute__ 135 #define __attribute__(a) 136 #endif 137 #endif 138 139 #ifndef MIN 140 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 141 #endif 142 143 #ifndef MAX 144 #define MAX(a,b) (((a) > (b)) ? (a) : (b)) 145 #endif 146 147 #ifndef O_CLOEXEC 148 # define O_CLOEXEC 0 149 #endif 150 151 #ifndef FD_CLOEXEC 152 # define FD_CLOEXEC 1 153 #endif 154 155 #define FILE_BADSIZE CAST(size_t, ~0ul) 156 #define MAXDESC 64 /* max len of text description/MIME type */ 157 #define MAXMIME 80 /* max len of text MIME type */ 158 #define MAXstring 128 /* max len of "string" types */ 159 160 #define MAGICNO 0xF11E041C 161 #define VERSIONNO 16 162 #define FILE_MAGICSIZE 376 163 164 #define FILE_GUID_SIZE sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX") 165 166 #define FILE_LOAD 0 167 #define FILE_CHECK 1 168 #define FILE_COMPILE 2 169 #define FILE_LIST 3 170 171 struct buffer { 172 int fd; 173 struct stat st; 174 const void *fbuf; 175 size_t flen; 176 off_t eoff; 177 void *ebuf; 178 size_t elen; 179 }; 180 181 union VALUETYPE { 182 uint8_t b; 183 uint16_t h; 184 uint32_t l; 185 uint64_t q; 186 uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */ 187 uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */ 188 uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */ 189 char s[MAXstring]; /* the search string or regex pattern */ 190 unsigned char us[MAXstring]; 191 uint64_t guid[2]; 192 float f; 193 double d; 194 }; 195 196 struct magic { 197 /* Word 1 */ 198 uint16_t cont_level; /* level of ">" */ 199 uint8_t flag; 200 #define INDIR 0x01 /* if '(...)' appears */ 201 #define OFFADD 0x02 /* if '>&' or '>...(&' appears */ 202 #define INDIROFFADD 0x04 /* if '>&(' appears */ 203 #define UNSIGNED 0x08 /* comparison is unsigned */ 204 #define NOSPACE 0x10 /* suppress space character before output */ 205 #define BINTEST 0x20 /* test is for a binary type (set only 206 for top-level tests) */ 207 #define TEXTTEST 0x40 /* for passing to file_softmagic */ 208 #define OFFNEGATIVE 0x80 /* relative to the end of file */ 209 210 uint8_t factor; 211 212 /* Word 2 */ 213 uint8_t reln; /* relation (0=eq, '>'=gt, etc) */ 214 uint8_t vallen; /* length of string value, if any */ 215 uint8_t type; /* comparison type (FILE_*) */ 216 uint8_t in_type; /* type of indirection */ 217 #define FILE_INVALID 0 218 #define FILE_BYTE 1 219 #define FILE_SHORT 2 220 #define FILE_DEFAULT 3 221 #define FILE_LONG 4 222 #define FILE_STRING 5 223 #define FILE_DATE 6 224 #define FILE_BESHORT 7 225 #define FILE_BELONG 8 226 #define FILE_BEDATE 9 227 #define FILE_LESHORT 10 228 #define FILE_LELONG 11 229 #define FILE_LEDATE 12 230 #define FILE_PSTRING 13 231 #define FILE_LDATE 14 232 #define FILE_BELDATE 15 233 #define FILE_LELDATE 16 234 #define FILE_REGEX 17 235 #define FILE_BESTRING16 18 236 #define FILE_LESTRING16 19 237 #define FILE_SEARCH 20 238 #define FILE_MEDATE 21 239 #define FILE_MELDATE 22 240 #define FILE_MELONG 23 241 #define FILE_QUAD 24 242 #define FILE_LEQUAD 25 243 #define FILE_BEQUAD 26 244 #define FILE_QDATE 27 245 #define FILE_LEQDATE 28 246 #define FILE_BEQDATE 29 247 #define FILE_QLDATE 30 248 #define FILE_LEQLDATE 31 249 #define FILE_BEQLDATE 32 250 #define FILE_FLOAT 33 251 #define FILE_BEFLOAT 34 252 #define FILE_LEFLOAT 35 253 #define FILE_DOUBLE 36 254 #define FILE_BEDOUBLE 37 255 #define FILE_LEDOUBLE 38 256 #define FILE_BEID3 39 257 #define FILE_LEID3 40 258 #define FILE_INDIRECT 41 259 #define FILE_QWDATE 42 260 #define FILE_LEQWDATE 43 261 #define FILE_BEQWDATE 44 262 #define FILE_NAME 45 263 #define FILE_USE 46 264 #define FILE_CLEAR 47 265 #define FILE_DER 48 266 #define FILE_GUID 49 267 #define FILE_OFFSET 50 268 #define FILE_NAMES_SIZE 51 /* size of array to contain all names */ 269 270 #define IS_STRING(t) \ 271 ((t) == FILE_STRING || \ 272 (t) == FILE_PSTRING || \ 273 (t) == FILE_BESTRING16 || \ 274 (t) == FILE_LESTRING16 || \ 275 (t) == FILE_REGEX || \ 276 (t) == FILE_SEARCH || \ 277 (t) == FILE_INDIRECT || \ 278 (t) == FILE_NAME || \ 279 (t) == FILE_USE) 280 281 #define FILE_FMT_NONE 0 282 #define FILE_FMT_NUM 1 /* "cduxXi" */ 283 #define FILE_FMT_STR 2 /* "s" */ 284 #define FILE_FMT_QUAD 3 /* "ll" */ 285 #define FILE_FMT_FLOAT 4 /* "eEfFgG" */ 286 #define FILE_FMT_DOUBLE 5 /* "eEfFgG" */ 287 288 /* Word 3 */ 289 uint8_t in_op; /* operator for indirection */ 290 uint8_t mask_op; /* operator for mask */ 291 #ifdef ENABLE_CONDITIONALS 292 uint8_t cond; /* conditional type */ 293 #else 294 uint8_t dummy; 295 #endif 296 uint8_t factor_op; 297 #define FILE_FACTOR_OP_PLUS '+' 298 #define FILE_FACTOR_OP_MINUS '-' 299 #define FILE_FACTOR_OP_TIMES '*' 300 #define FILE_FACTOR_OP_DIV '/' 301 #define FILE_FACTOR_OP_NONE '\0' 302 303 #define FILE_OPS "&|^+-*/%" 304 #define FILE_OPAND 0 305 #define FILE_OPOR 1 306 #define FILE_OPXOR 2 307 #define FILE_OPADD 3 308 #define FILE_OPMINUS 4 309 #define FILE_OPMULTIPLY 5 310 #define FILE_OPDIVIDE 6 311 #define FILE_OPMODULO 7 312 #define FILE_OPS_MASK 0x07 /* mask for above ops */ 313 #define FILE_UNUSED_1 0x08 314 #define FILE_UNUSED_2 0x10 315 #define FILE_OPSIGNED 0x20 316 #define FILE_OPINVERSE 0x40 317 #define FILE_OPINDIRECT 0x80 318 319 #ifdef ENABLE_CONDITIONALS 320 #define COND_NONE 0 321 #define COND_IF 1 322 #define COND_ELIF 2 323 #define COND_ELSE 3 324 #endif /* ENABLE_CONDITIONALS */ 325 326 /* Word 4 */ 327 int32_t offset; /* offset to magic number */ 328 /* Word 5 */ 329 int32_t in_offset; /* offset from indirection */ 330 /* Word 6 */ 331 uint32_t lineno; /* line number in magic file */ 332 /* Word 7,8 */ 333 union { 334 uint64_t _mask; /* for use with numeric and date types */ 335 struct { 336 uint32_t _count; /* repeat/line count */ 337 uint32_t _flags; /* modifier flags */ 338 } _s; /* for use with string types */ 339 } _u; 340 #define num_mask _u._mask 341 #define str_range _u._s._count 342 #define str_flags _u._s._flags 343 /* Words 9-24 */ 344 union VALUETYPE value; /* either number or string */ 345 /* Words 25-40 */ 346 char desc[MAXDESC]; /* description */ 347 /* Words 41-60 */ 348 char mimetype[MAXMIME]; /* MIME type */ 349 /* Words 61-62 */ 350 char apple[8]; /* APPLE CREATOR/TYPE */ 351 /* Words 63-78 */ 352 char ext[64]; /* Popular extensions */ 353 }; 354 355 #define BIT(A) (1 << (A)) 356 #define STRING_COMPACT_WHITESPACE BIT(0) 357 #define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1) 358 #define STRING_IGNORE_LOWERCASE BIT(2) 359 #define STRING_IGNORE_UPPERCASE BIT(3) 360 #define REGEX_OFFSET_START BIT(4) 361 #define STRING_TEXTTEST BIT(5) 362 #define STRING_BINTEST BIT(6) 363 #define PSTRING_1_BE BIT(7) 364 #define PSTRING_1_LE BIT(7) 365 #define PSTRING_2_BE BIT(8) 366 #define PSTRING_2_LE BIT(9) 367 #define PSTRING_4_BE BIT(10) 368 #define PSTRING_4_LE BIT(11) 369 #define REGEX_LINE_COUNT BIT(11) 370 #define PSTRING_LEN \ 371 (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE) 372 #define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12) 373 #define STRING_TRIM BIT(13) 374 #define CHAR_COMPACT_WHITESPACE 'W' 375 #define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w' 376 #define CHAR_IGNORE_LOWERCASE 'c' 377 #define CHAR_IGNORE_UPPERCASE 'C' 378 #define CHAR_REGEX_OFFSET_START 's' 379 #define CHAR_TEXTTEST 't' 380 #define CHAR_TRIM 'T' 381 #define CHAR_BINTEST 'b' 382 #define CHAR_PSTRING_1_BE 'B' 383 #define CHAR_PSTRING_1_LE 'B' 384 #define CHAR_PSTRING_2_BE 'H' 385 #define CHAR_PSTRING_2_LE 'h' 386 #define CHAR_PSTRING_4_BE 'L' 387 #define CHAR_PSTRING_4_LE 'l' 388 #define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J' 389 #define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE) 390 #define STRING_DEFAULT_RANGE 100 391 392 #define INDIRECT_RELATIVE BIT(0) 393 #define CHAR_INDIRECT_RELATIVE 'r' 394 395 /* list of magic entries */ 396 struct mlist { 397 struct magic *magic; /* array of magic entries */ 398 uint32_t nmagic; /* number of entries in array */ 399 void *map; /* internal resources used by entry */ 400 struct mlist *next, *prev; 401 }; 402 403 #ifdef __cplusplus 404 #define CAST(T, b) static_cast<T>(b) 405 #define RCAST(T, b) reinterpret_cast<T>(b) 406 #define CCAST(T, b) const_cast<T>(b) 407 #else 408 #define CAST(T, b) ((T)(b)) 409 #define RCAST(T, b) ((T)(uintptr_t)(b)) 410 #define CCAST(T, b) ((T)(uintptr_t)(b)) 411 #endif 412 413 struct level_info { 414 int32_t off; 415 int got_match; 416 #ifdef ENABLE_CONDITIONALS 417 int last_match; 418 int last_cond; /* used for error checking by parse() */ 419 #endif 420 }; 421 422 struct cont { 423 size_t len; 424 struct level_info *li; 425 }; 426 427 #define MAGIC_SETS 2 428 429 struct magic_set { 430 struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */ 431 struct cont c; 432 struct out { 433 char *buf; /* Accumulation buffer */ 434 size_t blen; /* Length of buffer */ 435 char *pbuf; /* Printable buffer */ 436 } o; 437 uint32_t offset; /* a copy of m->offset while we */ 438 /* are working on the magic entry */ 439 uint32_t eoffset; /* offset from end of file */ 440 int error; 441 int flags; /* Control magic tests. */ 442 int event_flags; /* Note things that happened. */ 443 #define EVENT_HAD_ERR 0x01 444 const char *file; 445 size_t line; /* current magic line number */ 446 mode_t mode; /* copy of current stat mode */ 447 448 /* data for searches */ 449 struct { 450 const char *s; /* start of search in original source */ 451 size_t s_len; /* length of search region */ 452 size_t offset; /* starting offset in source: XXX - should this be off_t? */ 453 size_t rm_len; /* match length */ 454 } search; 455 456 /* FIXME: Make the string dynamically allocated so that e.g. 457 strings matched in files can be longer than MAXstring */ 458 union VALUETYPE ms_value; /* either number or string */ 459 uint16_t indir_max; 460 uint16_t name_max; 461 uint16_t elf_shnum_max; 462 uint16_t elf_phnum_max; 463 uint16_t elf_notes_max; 464 uint16_t regex_max; 465 size_t bytes_max; /* number of bytes to read from file */ 466 size_t encoding_max; /* bytes to look for encoding */ 467 #ifndef FILE_BYTES_MAX 468 # define FILE_BYTES_MAX (1024 * 1024) /* how much of the file to look at */ 469 #endif 470 #define FILE_ELF_NOTES_MAX 256 471 #define FILE_ELF_PHNUM_MAX 2048 472 #define FILE_ELF_SHNUM_MAX 32768 473 #define FILE_INDIR_MAX 50 474 #define FILE_NAME_MAX 50 475 #define FILE_REGEX_MAX 8192 476 #define FILE_ENCODING_MAX (64 * 1024) 477 }; 478 479 /* Type for Unicode characters */ 480 typedef unsigned long file_unichar_t; 481 482 struct stat; 483 #define FILE_T_LOCAL 1 484 #define FILE_T_WINDOWS 2 485 protected const char *file_fmttime(char *, size_t, uint64_t, int); 486 protected struct magic_set *file_ms_alloc(int); 487 protected void file_ms_free(struct magic_set *); 488 protected int file_default(struct magic_set *, size_t); 489 protected int file_buffer(struct magic_set *, int, struct stat *, const char *, 490 const void *, size_t); 491 protected int file_fsmagic(struct magic_set *, const char *, struct stat *); 492 protected int file_pipe2file(struct magic_set *, int, const void *, size_t); 493 protected int file_vprintf(struct magic_set *, const char *, va_list) 494 __attribute__((__format__(__printf__, 2, 0))); 495 protected int file_separator(struct magic_set *); 496 protected char *file_copystr(char *, size_t, size_t, const char *); 497 protected int file_checkfmt(char *, size_t, const char *); 498 protected size_t file_printedlen(const struct magic_set *); 499 protected int file_print_guid(char *, size_t, const uint64_t *); 500 protected int file_parse_guid(const char *, uint64_t *); 501 protected int file_replace(struct magic_set *, const char *, const char *); 502 protected int file_printf(struct magic_set *, const char *, ...) 503 __attribute__((__format__(__printf__, 2, 3))); 504 protected int file_reset(struct magic_set *, int); 505 protected int file_tryelf(struct magic_set *, const struct buffer *); 506 protected int file_trycdf(struct magic_set *, const struct buffer *); 507 #if HAVE_FORK 508 protected int file_zmagic(struct magic_set *, const struct buffer *, 509 const char *); 510 #endif 511 protected int file_ascmagic(struct magic_set *, const struct buffer *, 512 int); 513 protected int file_ascmagic_with_encoding(struct magic_set *, 514 const struct buffer *, file_unichar_t *, size_t, const char *, const char *, int); 515 protected int file_encoding(struct magic_set *, const struct buffer *, 516 file_unichar_t **, size_t *, const char **, const char **, const char **); 517 protected int file_is_json(struct magic_set *, const struct buffer *); 518 protected int file_is_csv(struct magic_set *, const struct buffer *, int); 519 protected int file_is_tar(struct magic_set *, const struct buffer *); 520 protected int file_softmagic(struct magic_set *, const struct buffer *, 521 uint16_t *, uint16_t *, int, int); 522 protected int file_apprentice(struct magic_set *, const char *, int); 523 protected int buffer_apprentice(struct magic_set *, struct magic **, 524 size_t *, size_t); 525 protected int file_magicfind(struct magic_set *, const char *, struct mlist *); 526 protected uint64_t file_signextend(struct magic_set *, struct magic *, 527 uint64_t); 528 protected void file_badread(struct magic_set *); 529 protected void file_badseek(struct magic_set *); 530 protected void file_oomem(struct magic_set *, size_t); 531 protected void file_error(struct magic_set *, int, const char *, ...) 532 __attribute__((__format__(__printf__, 3, 4))); 533 protected void file_magerror(struct magic_set *, const char *, ...) 534 __attribute__((__format__(__printf__, 2, 3))); 535 protected void file_magwarn(struct magic_set *, const char *, ...) 536 __attribute__((__format__(__printf__, 2, 3))); 537 protected void file_mdump(struct magic *); 538 protected void file_showstr(FILE *, const char *, size_t); 539 protected size_t file_mbswidth(const char *); 540 protected const char *file_getbuffer(struct magic_set *); 541 protected ssize_t sread(int, void *, size_t, int); 542 protected int file_check_mem(struct magic_set *, unsigned int); 543 protected int file_looks_utf8(const unsigned char *, size_t, file_unichar_t *, 544 size_t *); 545 protected size_t file_pstring_length_size(struct magic_set *, 546 const struct magic *); 547 protected size_t file_pstring_get_length(struct magic_set *, 548 const struct magic *, const char *); 549 protected char * file_printable(char *, size_t, const char *, size_t); 550 #ifdef __EMX__ 551 protected int file_os2_apptype(struct magic_set *, const char *, const void *, 552 size_t); 553 #endif /* __EMX__ */ 554 protected int file_pipe_closexec(int *); 555 protected int file_clear_closexec(int); 556 protected char *file_strtrim(char *); 557 558 protected void buffer_init(struct buffer *, int, const struct stat *, 559 const void *, size_t); 560 protected void buffer_fini(struct buffer *); 561 protected int buffer_fill(const struct buffer *); 562 563 #include <locale.h> 564 #if defined(HAVE_XLOCALE_H) 565 #include <xlocale.h> 566 #endif 567 568 typedef struct { 569 const char *pat; 570 #if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE) 571 #define USE_C_LOCALE 572 locale_t old_lc_ctype; 573 locale_t c_lc_ctype; 574 #else 575 char *old_lc_ctype; 576 #endif 577 int rc; 578 regex_t rx; 579 } file_regex_t; 580 581 protected int file_regcomp(file_regex_t *, const char *, int); 582 protected int file_regexec(file_regex_t *, const char *, size_t, regmatch_t *, 583 int); 584 protected void file_regfree(file_regex_t *); 585 protected void file_regerror(file_regex_t *, int, struct magic_set *); 586 587 typedef struct { 588 char *buf; 589 size_t blen; 590 uint32_t offset; 591 } file_pushbuf_t; 592 593 protected file_pushbuf_t *file_push_buffer(struct magic_set *); 594 protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *); 595 596 #ifndef COMPILE_ONLY 597 extern const char *file_names[]; 598 extern const size_t file_nnames; 599 #endif 600 601 #ifndef HAVE_PREAD 602 ssize_t pread(int, void *, size_t, off_t); 603 #endif 604 #ifndef HAVE_VASPRINTF 605 int vasprintf(char **, const char *, va_list); 606 #endif 607 #ifndef HAVE_ASPRINTF 608 int asprintf(char **, const char *, ...); 609 #endif 610 #ifndef HAVE_DPRINTF 611 int dprintf(int, const char *, ...); 612 #endif 613 614 #ifndef HAVE_STRLCPY 615 size_t strlcpy(char *, const char *, size_t); 616 #endif 617 #ifndef HAVE_STRLCAT 618 size_t strlcat(char *, const char *, size_t); 619 #endif 620 #ifndef HAVE_STRCASESTR 621 char *strcasestr(const char *, const char *); 622 #endif 623 #ifndef HAVE_GETLINE 624 ssize_t getline(char **, size_t *, FILE *); 625 ssize_t getdelim(char **, size_t *, int, FILE *); 626 #endif 627 #ifndef HAVE_CTIME_R 628 char *ctime_r(const time_t *, char *); 629 #endif 630 #ifndef HAVE_ASCTIME_R 631 char *asctime_r(const struct tm *, char *); 632 #endif 633 #ifndef HAVE_GMTIME_R 634 struct tm *gmtime_r(const time_t *, struct tm *); 635 #endif 636 #ifndef HAVE_LOCALTIME_R 637 struct tm *localtime_r(const time_t *, struct tm *); 638 #endif 639 #ifndef HAVE_FMTCHECK 640 const char *fmtcheck(const char *, const char *) 641 __attribute__((__format_arg__(2))); 642 #endif 643 644 #ifdef HAVE_LIBSECCOMP 645 // basic filter 646 // this mode should not interfere with normal operations 647 // only some dangerous syscalls are blacklisted 648 int enable_sandbox_basic(void); 649 650 // enhanced filter 651 // this mode allows only the necessary syscalls used during normal operation 652 // extensive testing required !!! 653 int enable_sandbox_full(void); 654 #endif 655 656 protected const char *file_getprogname(void); 657 protected void file_setprogname(const char *); 658 protected void file_err(int, const char *, ...) 659 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 660 protected void file_errx(int, const char *, ...) 661 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 662 protected void file_warn(const char *, ...) 663 __attribute__((__format__(__printf__, 1, 2))); 664 protected void file_warnx(const char *, ...) 665 __attribute__((__format__(__printf__, 1, 2))); 666 667 #if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK) 668 #define QUICK 669 #endif 670 671 #ifndef O_BINARY 672 #define O_BINARY 0 673 #endif 674 #ifndef O_NONBLOCK 675 #define O_NONBLOCK 0 676 #endif 677 678 #ifndef __cplusplus 679 #if defined(__GNUC__) && (__GNUC__ >= 3) 680 #define FILE_RCSID(id) \ 681 static const char rcsid[] __attribute__((__used__)) = id; 682 #else 683 #define FILE_RCSID(id) \ 684 static const char *rcsid(const char *p) { \ 685 return rcsid(p = id); \ 686 } 687 #endif 688 #else 689 #define FILE_RCSID(id) 690 #endif 691 #ifndef __RCSID 692 #define __RCSID(a) 693 #endif 694 695 #endif /* __file_h__ */ 696