> /*
> * Copyright (c) Ian F. Darwin 1986-1995.
> * Software written by Ian F. Darwin and others;
> * maintained 1995-present by Christos Zoulas and others.
> *
> * Redistribution and use in source and binary forms, with or without
> * modification, are permitted provided that the following conditions
> * are met:
> * 1. Redistributions of source code must retain the above copyright
> * notice immediately at the beginning of the file, without modification,
> * this list of conditions, and the following disclaimer.
> * 2. Redistributions in binary form must reproduce the above copyright
> * notice, this list of conditions and the following disclaimer in the
> * documentation and/or other materials provided with the distribution.
> *
> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
> * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> * SUCH DAMAGE.
> */
> /*
> * file.h - definitions for file(1) program
> * @(#)$File: file.h,v 1.135 2011/09/20 15:30:14 christos Exp $
> */
> #ifndef __file_h__
> #define __file_h__
> #ifdef HAVE_CONFIG_H
> #include <config.h>
> #endif
> #ifdef WIN32
> #ifdef _WIN64
> #define SIZE_T_FORMAT "I64"
> #else
> #define SIZE_T_FORMAT ""
> #endif
> #define INT64_T_FORMAT "I64"
> #else
> #define SIZE_T_FORMAT "z"
> #define INT64_T_FORMAT "ll"
> #endif
> #include <stdio.h> /* Include that here, to make sure __P gets defined */
> #include <errno.h>
> #include <fcntl.h> /* For open and flags */
> #ifdef HAVE_STDINT_H
> #ifndef __STDC_LIMIT_MACROS
> #define __STDC_LIMIT_MACROS
> #endif
> #include <stdint.h>
> #endif
> #ifdef HAVE_INTTYPES_H
> #include <inttypes.h>
> #endif
> #include <regex.h>
> #include <sys/types.h>
> #include <sys/param.h>
> /* Do this here and now, because struct stat gets re-defined on solaris */
> #include <sys/stat.h>
> #include <stdarg.h>
> #define ENABLE_CONDITIONALS
> #ifndef MAGIC
> #define MAGIC "/etc/magic"
> #endif
> #if defined(__EMX__) || defined (WIN32)
> #define PATHSEP ';'
> #else
> #define PATHSEP ':'
> #endif
> #define private static
> #ifndef protected
> #define protected
> #endif
> #define public
> #ifndef __arraycount
> #define __arraycount(a) (sizeof(a) / sizeof(a[0]))
> #endif
> #ifndef __GNUC_PREREQ__
> #ifdef __GNUC__
> #define __GNUC_PREREQ__(x, y) \
> ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \
> (__GNUC__ > (x)))
> #else
> #define __GNUC_PREREQ__(x, y) 0
> #endif
> #endif
> #ifndef __GNUC__
> #ifndef __attribute__
> #define __attribute__(a)
> #endif
> #endif
> #ifndef MIN
> #define MIN(a,b) (((a) < (b)) ? (a) : (b))
> #endif
> #ifndef MAX
> #define MAX(a,b) (((a) > (b)) ? (a) : (b))
> #endif
> #ifndef HOWMANY
> # define HOWMANY (256 * 1024) /* how much of the file to look at */
> #endif
> #define MAXMAGIS 8192 /* max entries in any one magic file
> or directory */
> #define MAXDESC 64 /* max leng of text description/MIME type */
> #define MAXstring 64 /* max leng of "string" types */
> #define MAGICNO 0xF11E041C
> #define VERSIONNO 8
> #define FILE_MAGICSIZE 232
> #define FILE_LOAD 0
> #define FILE_CHECK 1
> #define FILE_COMPILE 2
> #define FILE_LIST 3
> union VALUETYPE {
> uint8_t b;
> uint16_t h;
> uint32_t l;
> uint64_t q;
> uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */
> uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */
> uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */
> char s[MAXstring]; /* the search string or regex pattern */
> unsigned char us[MAXstring];
> float f;
> double d;
> };
> struct magic {
> /* Word 1 */
> uint16_t cont_level; /* level of ">" */
> uint8_t flag;
> #define INDIR 0x01 /* if '(...)' appears */
> #define OFFADD 0x02 /* if '>&' or '>...(&' appears */
> #define INDIROFFADD 0x04 /* if '>&(' appears */
> #define UNSIGNED 0x08 /* comparison is unsigned */
> #define NOSPACE 0x10 /* suppress space character before output */
> #define BINTEST 0x20 /* test is for a binary type (set only
> for top-level tests) */
> #define TEXTTEST 0x40 /* for passing to file_softmagic */
> uint8_t factor;
> /* Word 2 */
> uint8_t reln; /* relation (0=eq, '>'=gt, etc) */
> uint8_t vallen; /* length of string value, if any */
> uint8_t type; /* comparison type (FILE_*) */
> uint8_t in_type; /* type of indirection */
> #define FILE_INVALID 0
> #define FILE_BYTE 1
> #define FILE_SHORT 2
> #define FILE_DEFAULT 3
> #define FILE_LONG 4
> #define FILE_STRING 5
> #define FILE_DATE 6
> #define FILE_BESHORT 7
> #define FILE_BELONG 8
> #define FILE_BEDATE 9
> #define FILE_LESHORT 10
> #define FILE_LELONG 11
> #define FILE_LEDATE 12
> #define FILE_PSTRING 13
> #define FILE_LDATE 14
> #define FILE_BELDATE 15
> #define FILE_LELDATE 16
> #define FILE_REGEX 17
> #define FILE_BESTRING16 18
> #define FILE_LESTRING16 19
> #define FILE_SEARCH 20
> #define FILE_MEDATE 21
> #define FILE_MELDATE 22
> #define FILE_MELONG 23
> #define FILE_QUAD 24
> #define FILE_LEQUAD 25
> #define FILE_BEQUAD 26
> #define FILE_QDATE 27
> #define FILE_LEQDATE 28
> #define FILE_BEQDATE 29
> #define FILE_QLDATE 30
> #define FILE_LEQLDATE 31
> #define FILE_BEQLDATE 32
> #define FILE_FLOAT 33
> #define FILE_BEFLOAT 34
> #define FILE_LEFLOAT 35
> #define FILE_DOUBLE 36
> #define FILE_BEDOUBLE 37
> #define FILE_LEDOUBLE 38
> #define FILE_BEID3 39
> #define FILE_LEID3 40
> #define FILE_INDIRECT 41
> #define FILE_NAMES_SIZE 42/* size of array to contain all names */
> #define IS_STRING(t) \
> ((t) == FILE_STRING || \
> (t) == FILE_PSTRING || \
> (t) == FILE_BESTRING16 || \
> (t) == FILE_LESTRING16 || \
> (t) == FILE_REGEX || \
> (t) == FILE_SEARCH || \
> (t) == FILE_DEFAULT)
> #define FILE_FMT_NONE 0
> #define FILE_FMT_NUM 1 /* "cduxXi" */
> #define FILE_FMT_STR 2 /* "s" */
> #define FILE_FMT_QUAD 3 /* "ll" */
> #define FILE_FMT_FLOAT 4 /* "eEfFgG" */
> #define FILE_FMT_DOUBLE 5 /* "eEfFgG" */
> /* Word 3 */
> uint8_t in_op; /* operator for indirection */
> uint8_t mask_op; /* operator for mask */
> #ifdef ENABLE_CONDITIONALS
> uint8_t cond; /* conditional type */
> #else
> uint8_t dummy;
> #endif
> uint8_t factor_op;
> #define FILE_FACTOR_OP_PLUS '+'
> #define FILE_FACTOR_OP_MINUS '-'
> #define FILE_FACTOR_OP_TIMES '*'
> #define FILE_FACTOR_OP_DIV '/'
> #define FILE_FACTOR_OP_NONE '\0'
> #define FILE_OPS "&|^+-*/%"
> #define FILE_OPAND 0
> #define FILE_OPOR 1
> #define FILE_OPXOR 2
> #define FILE_OPADD 3
> #define FILE_OPMINUS 4
> #define FILE_OPMULTIPLY 5
> #define FILE_OPDIVIDE 6
> #define FILE_OPMODULO 7
> #define FILE_OPS_MASK 0x07 /* mask for above ops */
> #define FILE_UNUSED_1 0x08
> #define FILE_UNUSED_2 0x10
> #define FILE_UNUSED_3 0x20
> #define FILE_OPINVERSE 0x40
> #define FILE_OPINDIRECT 0x80
> #ifdef ENABLE_CONDITIONALS
> #define COND_NONE 0
> #define COND_IF 1
> #define COND_ELIF 2
> #define COND_ELSE 3
> #endif /* ENABLE_CONDITIONALS */
> /* Word 4 */
> uint32_t offset; /* offset to magic number */
> /* Word 5 */
> int32_t in_offset; /* offset from indirection */
> /* Word 6 */
> uint32_t lineno; /* line number in magic file */
> /* Word 7,8 */
> union {
> uint64_t _mask; /* for use with numeric and date types */
> struct {
> uint32_t _count; /* repeat/line count */
...
