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 1.220 2020/06/08 17:38:27 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 #define FILE_BADSIZE CAST(size_t, ~0ul) 148 #define MAXDESC 64 /* max len of text description/MIME type */ 149 #define MAXMIME 80 /* max len of text MIME type */ 150 #define MAXstring 128 /* max len of "string" types */ 151 152 #define MAGICNO 0xF11E041C 153 #define VERSIONNO 16 154 #define FILE_MAGICSIZE 376 155 156 #define FILE_GUID_SIZE sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX") 157 158 #define FILE_LOAD 0 159 #define FILE_CHECK 1 160 #define FILE_COMPILE 2 161 #define FILE_LIST 3 162 163 struct buffer { 164 int fd; 165 struct stat st; 166 const void *fbuf; 167 size_t flen; 168 off_t eoff; 169 void *ebuf; 170 size_t elen; 171 }; 172 173 union VALUETYPE { 174 uint8_t b; 175 uint16_t h; 176 uint32_t l; 177 uint64_t q; 178 uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */ 179 uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */ 180 uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */ 181 char s[MAXstring]; /* the search string or regex pattern */ 182 unsigned char us[MAXstring]; 183 uint64_t guid[2]; 184 float f; 185 double d; 186 }; 187 188 struct magic { 189 /* Word 1 */ 190 uint16_t cont_level; /* level of ">" */ 191 uint8_t flag; 192 #define INDIR 0x01 /* if '(...)' appears */ 193 #define OFFADD 0x02 /* if '>&' or '>...(&' appears */ 194 #define INDIROFFADD 0x04 /* if '>&(' appears */ 195 #define UNSIGNED 0x08 /* comparison is unsigned */ 196 #define NOSPACE 0x10 /* suppress space character before output */ 197 #define BINTEST 0x20 /* test is for a binary type (set only 198 for top-level tests) */ 199 #define TEXTTEST 0x40 /* for passing to file_softmagic */ 200 #define OFFNEGATIVE 0x80 /* relative to the end of file */ 201 202 uint8_t factor; 203 204 /* Word 2 */ 205 uint8_t reln; /* relation (0=eq, '>'=gt, etc) */ 206 uint8_t vallen; /* length of string value, if any */ 207 uint8_t type; /* comparison type (FILE_*) */ 208 uint8_t in_type; /* type of indirection */ 209 #define FILE_INVALID 0 210 #define FILE_BYTE 1 211 #define FILE_SHORT 2 212 #define FILE_DEFAULT 3 213 #define FILE_LONG 4 214 #define FILE_STRING 5 215 #define FILE_DATE 6 216 #define FILE_BESHORT 7 217 #define FILE_BELONG 8 218 #define FILE_BEDATE 9 219 #define FILE_LESHORT 10 220 #define FILE_LELONG 11 221 #define FILE_LEDATE 12 222 #define FILE_PSTRING 13 223 #define FILE_LDATE 14 224 #define FILE_BELDATE 15 225 #define FILE_LELDATE 16 226 #define FILE_REGEX 17 227 #define FILE_BESTRING16 18 228 #define FILE_LESTRING16 19 229 #define FILE_SEARCH 20 230 #define FILE_MEDATE 21 231 #define FILE_MELDATE 22 232 #define FILE_MELONG 23 233 #define FILE_QUAD 24 234 #define FILE_LEQUAD 25 235 #define FILE_BEQUAD 26 236 #define FILE_QDATE 27 237 #define FILE_LEQDATE 28 238 #define FILE_BEQDATE 29 239 #define FILE_QLDATE 30 240 #define FILE_LEQLDATE 31 241 #define FILE_BEQLDATE 32 242 #define FILE_FLOAT 33 243 #define FILE_BEFLOAT 34 244 #define FILE_LEFLOAT 35 245 #define FILE_DOUBLE 36 246 #define FILE_BEDOUBLE 37 247 #define FILE_LEDOUBLE 38 248 #define FILE_BEID3 39 249 #define FILE_LEID3 40 250 #define FILE_INDIRECT 41 251 #define FILE_QWDATE 42 252 #define FILE_LEQWDATE 43 253 #define FILE_BEQWDATE 44 254 #define FILE_NAME 45 255 #define FILE_USE 46 256 #define FILE_CLEAR 47 257 #define FILE_DER 48 258 #define FILE_GUID 49 259 #define FILE_OFFSET 50 260 #define FILE_NAMES_SIZE 51 /* size of array to contain all names */ 261 262 #define IS_STRING(t) \ 263 ((t) == FILE_STRING || \ 264 (t) == FILE_PSTRING || \ 265 (t) == FILE_BESTRING16 || \ 266 (t) == FILE_LESTRING16 || \ 267 (t) == FILE_REGEX || \ 268 (t) == FILE_SEARCH || \ 269 (t) == FILE_INDIRECT || \ 270 (t) == FILE_NAME || \ 271 (t) == FILE_USE) 272 273 #define FILE_FMT_NONE 0 274 #define FILE_FMT_NUM 1 /* "cduxXi" */ 275 #define FILE_FMT_STR 2 /* "s" */ 276 #define FILE_FMT_QUAD 3 /* "ll" */ 277 #define FILE_FMT_FLOAT 4 /* "eEfFgG" */ 278 #define FILE_FMT_DOUBLE 5 /* "eEfFgG" */ 279 280 /* Word 3 */ 281 uint8_t in_op; /* operator for indirection */ 282 uint8_t mask_op; /* operator for mask */ 283 #ifdef ENABLE_CONDITIONALS 284 uint8_t cond; /* conditional type */ 285 #else 286 uint8_t dummy; 287 #endif 288 uint8_t factor_op; 289 #define FILE_FACTOR_OP_PLUS '+' 290 #define FILE_FACTOR_OP_MINUS '-' 291 #define FILE_FACTOR_OP_TIMES '*' 292 #define FILE_FACTOR_OP_DIV '/' 293 #define FILE_FACTOR_OP_NONE '\0' 294 295 #define FILE_OPS "&|^+-*/%" 296 #define FILE_OPAND 0 297 #define FILE_OPOR 1 298 #define FILE_OPXOR 2 299 #define FILE_OPADD 3 300 #define FILE_OPMINUS 4 301 #define FILE_OPMULTIPLY 5 302 #define FILE_OPDIVIDE 6 303 #define FILE_OPMODULO 7 304 #define FILE_OPS_MASK 0x07 /* mask for above ops */ 305 #define FILE_UNUSED_1 0x08 306 #define FILE_UNUSED_2 0x10 307 #define FILE_OPSIGNED 0x20 308 #define FILE_OPINVERSE 0x40 309 #define FILE_OPINDIRECT 0x80 310 311 #ifdef ENABLE_CONDITIONALS 312 #define COND_NONE 0 313 #define COND_IF 1 314 #define COND_ELIF 2 315 #define COND_ELSE 3 316 #endif /* ENABLE_CONDITIONALS */ 317 318 /* Word 4 */ 319 int32_t offset; /* offset to magic number */ 320 /* Word 5 */ 321 int32_t in_offset; /* offset from indirection */ 322 /* Word 6 */ 323 uint32_t lineno; /* line number in magic file */ 324 /* Word 7,8 */ 325 union { 326 uint64_t _mask; /* for use with numeric and date types */ 327 struct { 328 uint32_t _count; /* repeat/line count */ 329 uint32_t _flags; /* modifier flags */ 330 } _s; /* for use with string types */ 331 } _u; 332 #define num_mask _u._mask 333 #define str_range _u._s._count 334 #define str_flags _u._s._flags 335 /* Words 9-24 */ 336 union VALUETYPE value; /* either number or string */ 337 /* Words 25-40 */ 338 char desc[MAXDESC]; /* description */ 339 /* Words 41-60 */ 340 char mimetype[MAXMIME]; /* MIME type */ 341 /* Words 61-62 */ 342 char apple[8]; /* APPLE CREATOR/TYPE */ 343 /* Words 63-78 */ 344 char ext[64]; /* Popular extensions */ 345 }; 346 347 #define BIT(A) (1 << (A)) 348 #define STRING_COMPACT_WHITESPACE BIT(0) 349 #define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1) 350 #define STRING_IGNORE_LOWERCASE BIT(2) 351 #define STRING_IGNORE_UPPERCASE BIT(3) 352 #define REGEX_OFFSET_START BIT(4) 353 #define STRING_TEXTTEST BIT(5) 354 #define STRING_BINTEST BIT(6) 355 #define PSTRING_1_BE BIT(7) 356 #define PSTRING_1_LE BIT(7) 357 #define PSTRING_2_BE BIT(8) 358 #define PSTRING_2_LE BIT(9) 359 #define PSTRING_4_BE BIT(10) 360 #define PSTRING_4_LE BIT(11) 361 #define REGEX_LINE_COUNT BIT(11) 362 #define PSTRING_LEN \ 363 (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE) 364 #define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12) 365 #define STRING_TRIM BIT(13) 366 #define CHAR_COMPACT_WHITESPACE 'W' 367 #define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w' 368 #define CHAR_IGNORE_LOWERCASE 'c' 369 #define CHAR_IGNORE_UPPERCASE 'C' 370 #define CHAR_REGEX_OFFSET_START 's' 371 #define CHAR_TEXTTEST 't' 372 #define CHAR_TRIM 'T' 373 #define CHAR_BINTEST 'b' 374 #define CHAR_PSTRING_1_BE 'B' 375 #define CHAR_PSTRING_1_LE 'B' 376 #define CHAR_PSTRING_2_BE 'H' 377 #define CHAR_PSTRING_2_LE 'h' 378 #define CHAR_PSTRING_4_BE 'L' 379 #define CHAR_PSTRING_4_LE 'l' 380 #define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J' 381 #define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE) 382 #define STRING_DEFAULT_RANGE 100 383 384 #define INDIRECT_RELATIVE BIT(0) 385 #define CHAR_INDIRECT_RELATIVE 'r' 386 387 /* list of magic entries */ 388 struct mlist { 389 struct magic *magic; /* array of magic entries */ 390 uint32_t nmagic; /* number of entries in array */ 391 void *map; /* internal resources used by entry */ 392 struct mlist *next, *prev; 393 }; 394 395 #ifdef __cplusplus 396 #define CAST(T, b) static_cast<T>(b) 397 #define RCAST(T, b) reinterpret_cast<T>(b) 398 #define CCAST(T, b) const_cast<T>(b) 399 #else 400 #define CAST(T, b) ((T)(b)) 401 #define RCAST(T, b) ((T)(uintptr_t)(b)) 402 #define CCAST(T, b) ((T)(uintptr_t)(b)) 403 #endif 404 405 struct level_info { 406 int32_t off; 407 int got_match; 408 #ifdef ENABLE_CONDITIONALS 409 int last_match; 410 int last_cond; /* used for error checking by parse() */ 411 #endif 412 }; 413 414 #define MAGIC_SETS 2 415 416 struct magic_set { 417 struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */ 418 struct cont { 419 size_t len; 420 struct level_info *li; 421 } c; 422 struct out { 423 char *buf; /* Accumulation buffer */ 424 size_t blen; /* Length of buffer */ 425 char *pbuf; /* Printable buffer */ 426 } o; 427 uint32_t offset; /* a copy of m->offset while we */ 428 /* are working on the magic entry */ 429 uint32_t eoffset; /* offset from end of file */ 430 int error; 431 int flags; /* Control magic tests. */ 432 int event_flags; /* Note things that happened. */ 433 #define EVENT_HAD_ERR 0x01 434 const char *file; 435 size_t line; /* current magic line number */ 436 mode_t mode; /* copy of current stat mode */ 437 438 /* data for searches */ 439 struct { 440 const char *s; /* start of search in original source */ 441 size_t s_len; /* length of search region */ 442 size_t offset; /* starting offset in source: XXX - should this be off_t? */ 443 size_t rm_len; /* match length */ 444 } search; 445 446 /* FIXME: Make the string dynamically allocated so that e.g. 447 strings matched in files can be longer than MAXstring */ 448 union VALUETYPE ms_value; /* either number or string */ 449 uint16_t indir_max; 450 uint16_t name_max; 451 uint16_t elf_shnum_max; 452 uint16_t elf_phnum_max; 453 uint16_t elf_notes_max; 454 uint16_t regex_max; 455 size_t bytes_max; /* number of bytes to read from file */ 456 #ifndef FILE_BYTES_MAX 457 # define FILE_BYTES_MAX (1024 * 1024) /* how much of the file to look at */ 458 #endif 459 #define FILE_ELF_NOTES_MAX 256 460 #define FILE_ELF_PHNUM_MAX 2048 461 #define FILE_ELF_SHNUM_MAX 32768 462 #define FILE_INDIR_MAX 50 463 #define FILE_NAME_MAX 50 464 #define FILE_REGEX_MAX 8192 465 }; 466 467 /* Type for Unicode characters */ 468 typedef unsigned long unichar; 469 470 struct stat; 471 #define FILE_T_LOCAL 1 472 #define FILE_T_WINDOWS 2 473 protected const char *file_fmttime(char *, size_t, uint64_t, int); 474 protected struct magic_set *file_ms_alloc(int); 475 protected void file_ms_free(struct magic_set *); 476 protected int file_default(struct magic_set *, size_t); 477 protected int file_buffer(struct magic_set *, int, struct stat *, const char *, 478 const void *, size_t); 479 protected int file_fsmagic(struct magic_set *, const char *, struct stat *); 480 protected int file_pipe2file(struct magic_set *, int, const void *, size_t); 481 protected int file_vprintf(struct magic_set *, const char *, va_list) 482 __attribute__((__format__(__printf__, 2, 0))); 483 protected int file_separator(struct magic_set *); 484 protected char *file_copystr(char *, size_t, size_t, const char *); 485 protected int file_checkfmt(char *, size_t, const char *); 486 protected size_t file_printedlen(const struct magic_set *); 487 protected int file_print_guid(char *, size_t, const uint64_t *); 488 protected int file_parse_guid(const char *, uint64_t *); 489 protected int file_replace(struct magic_set *, const char *, const char *); 490 protected int file_printf(struct magic_set *, const char *, ...) 491 __attribute__((__format__(__printf__, 2, 3))); 492 protected int file_reset(struct magic_set *, int); 493 protected int file_tryelf(struct magic_set *, const struct buffer *); 494 protected int file_trycdf(struct magic_set *, const struct buffer *); 495 #if HAVE_FORK 496 protected int file_zmagic(struct magic_set *, const struct buffer *, 497 const char *); 498 #endif 499 protected int file_ascmagic(struct magic_set *, const struct buffer *, 500 int); 501 protected int file_ascmagic_with_encoding(struct magic_set *, 502 const struct buffer *, unichar *, size_t, const char *, const char *, int); 503 protected int file_encoding(struct magic_set *, const struct buffer *, 504 unichar **, size_t *, const char **, const char **, const char **); 505 protected int file_is_json(struct magic_set *, const struct buffer *); 506 protected int file_is_csv(struct magic_set *, const struct buffer *, int); 507 protected int file_is_tar(struct magic_set *, const struct buffer *); 508 protected int file_softmagic(struct magic_set *, const struct buffer *, 509 uint16_t *, uint16_t *, int, int); 510 protected int file_apprentice(struct magic_set *, const char *, int); 511 protected int buffer_apprentice(struct magic_set *, struct magic **, 512 size_t *, size_t); 513 protected int file_magicfind(struct magic_set *, const char *, struct mlist *); 514 protected uint64_t file_signextend(struct magic_set *, struct magic *, 515 uint64_t); 516 protected void file_badread(struct magic_set *); 517 protected void file_badseek(struct magic_set *); 518 protected void file_oomem(struct magic_set *, size_t); 519 protected void file_error(struct magic_set *, int, const char *, ...) 520 __attribute__((__format__(__printf__, 3, 4))); 521 protected void file_magerror(struct magic_set *, const char *, ...) 522 __attribute__((__format__(__printf__, 2, 3))); 523 protected void file_magwarn(struct magic_set *, const char *, ...) 524 __attribute__((__format__(__printf__, 2, 3))); 525 protected void file_mdump(struct magic *); 526 protected void file_showstr(FILE *, const char *, size_t); 527 protected size_t file_mbswidth(const char *); 528 protected const char *file_getbuffer(struct magic_set *); 529 protected ssize_t sread(int, void *, size_t, int); 530 protected int file_check_mem(struct magic_set *, unsigned int); 531 protected int file_looks_utf8(const unsigned char *, size_t, unichar *, 532 size_t *); 533 protected size_t file_pstring_length_size(struct magic_set *, 534 const struct magic *); 535 protected size_t file_pstring_get_length(struct magic_set *, 536 const struct magic *, const char *); 537 protected char * file_printable(char *, size_t, const char *, size_t); 538 #ifdef __EMX__ 539 protected int file_os2_apptype(struct magic_set *, const char *, const void *, 540 size_t); 541 #endif /* __EMX__ */ 542 543 protected void buffer_init(struct buffer *, int, const struct stat *, 544 const void *, size_t); 545 protected void buffer_fini(struct buffer *); 546 protected int buffer_fill(const struct buffer *); 547 548 #include <locale.h> 549 #if defined(HAVE_XLOCALE_H) 550 #include <xlocale.h> 551 #endif 552 553 typedef struct { 554 const char *pat; 555 #if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE) 556 #define USE_C_LOCALE 557 locale_t old_lc_ctype; 558 locale_t c_lc_ctype; 559 #else 560 char *old_lc_ctype; 561 #endif 562 int rc; 563 regex_t rx; 564 } file_regex_t; 565 566 protected int file_regcomp(file_regex_t *, const char *, int); 567 protected int file_regexec(file_regex_t *, const char *, size_t, regmatch_t *, 568 int); 569 protected void file_regfree(file_regex_t *); 570 protected void file_regerror(file_regex_t *, int, struct magic_set *); 571 572 typedef struct { 573 char *buf; 574 size_t blen; 575 uint32_t offset; 576 } file_pushbuf_t; 577 578 protected file_pushbuf_t *file_push_buffer(struct magic_set *); 579 protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *); 580 581 #ifndef COMPILE_ONLY 582 extern const char *file_names[]; 583 extern const size_t file_nnames; 584 #endif 585 586 #ifndef HAVE_PREAD 587 ssize_t pread(int, void *, size_t, off_t); 588 #endif 589 #ifndef HAVE_VASPRINTF 590 int vasprintf(char **, const char *, va_list); 591 #endif 592 #ifndef HAVE_ASPRINTF 593 int asprintf(char **, const char *, ...); 594 #endif 595 #ifndef HAVE_DPRINTF 596 int dprintf(int, const char *, ...); 597 #endif 598 599 #ifndef HAVE_STRLCPY 600 size_t strlcpy(char *, const char *, size_t); 601 #endif 602 #ifndef HAVE_STRLCAT 603 size_t strlcat(char *, const char *, size_t); 604 #endif 605 #ifndef HAVE_STRCASESTR 606 char *strcasestr(const char *, const char *); 607 #endif 608 #ifndef HAVE_GETLINE 609 ssize_t getline(char **, size_t *, FILE *); 610 ssize_t getdelim(char **, size_t *, int, FILE *); 611 #endif 612 #ifndef HAVE_CTIME_R 613 char *ctime_r(const time_t *, char *); 614 #endif 615 #ifndef HAVE_ASCTIME_R 616 char *asctime_r(const struct tm *, char *); 617 #endif 618 #ifndef HAVE_GMTIME_R 619 struct tm *gmtime_r(const time_t *, struct tm *); 620 #endif 621 #ifndef HAVE_LOCALTIME_R 622 struct tm *localtime_r(const time_t *, struct tm *); 623 #endif 624 #ifndef HAVE_FMTCHECK 625 const char *fmtcheck(const char *, const char *) 626 __attribute__((__format_arg__(2))); 627 #endif 628 629 #ifdef HAVE_LIBSECCOMP 630 // basic filter 631 // this mode should not interfere with normal operations 632 // only some dangerous syscalls are blacklisted 633 int enable_sandbox_basic(void); 634 635 // enhanced filter 636 // this mode allows only the necessary syscalls used during normal operation 637 // extensive testing required !!! 638 int enable_sandbox_full(void); 639 #endif 640 641 protected const char *file_getprogname(void); 642 protected void file_setprogname(const char *); 643 protected void file_err(int, const char *, ...) 644 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 645 protected void file_errx(int, const char *, ...) 646 __attribute__((__format__(__printf__, 2, 3), __noreturn__)); 647 protected void file_warn(const char *, ...) 648 __attribute__((__format__(__printf__, 1, 2))); 649 protected void file_warnx(const char *, ...) 650 __attribute__((__format__(__printf__, 1, 2))); 651 652 #if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK) 653 #define QUICK 654 #endif 655 656 #ifndef O_BINARY 657 #define O_BINARY 0 658 #endif 659 #ifndef O_NONBLOCK 660 #define O_NONBLOCK 0 661 #endif 662 663 #ifndef __cplusplus 664 #if defined(__GNUC__) && (__GNUC__ >= 3) 665 #define FILE_RCSID(id) \ 666 static const char rcsid[] __attribute__((__used__)) = id; 667 #else 668 #define FILE_RCSID(id) \ 669 static const char *rcsid(const char *p) { \ 670 return rcsid(p = id); \ 671 } 672 #endif 673 #else 674 #define FILE_RCSID(id) 675 #endif 676 #ifndef __RCSID 677 #define __RCSID(a) 678 #endif 679 680 #endif /* __file_h__ */ 681