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/*
* file.h - definitions for file(1) program
* @(#)Id: file.h,v 1.43 2002/07/03 18:57:52 christos Exp
*
* Copyright (c) Ian F. Darwin, 1987.
* Written by Ian F. Darwin.
*
* This software is not subject to any license of the American Telephone
* and Telegraph Company or of the Regents of the University of California.
*
* Permission is granted to anyone to use this software for any purpose on
* any computer system, and to alter it and redistribute it freely, subject
* to the following restrictions:
*
* 1. The author is not responsible for the consequences of use of this
* software, no matter how awful, even if they arise from flaws in it.
*
* 2. The origin of this software must not be misrepresented, either by
* explicit claim or by omission. Since few users ever read sources,
* credits must appear in the documentation.
*
* 3. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software. Since few users
* ever read sources, credits must appear in the documentation.
*
* 4. This notice may not be removed or altered.
*/
#ifndef __file_h__
#define __file_h__
#ifndef __linux__
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _FILE_OFFSET_BITS 64
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <stdio.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
/* Do this here and now, because struct stat gets re-defined on solaris */
#include <sys/stat.h>
#ifndef HOWMANY
# define HOWMANY 65536 /* how much of the file to look at */
#endif
#define MAXMAGIS 4096 /* max entries in /etc/magic */
#define MAXDESC 50 /* max leng of text description */
#define MAXstring 32 /* max leng of "string" types */
#define MAGICNO 0xF11E041C
#define VERSIONNO 1
#define CHECK 1
#define COMPILE 2
struct magic {
uint16_t cont_level; /* level of ">" */
uint8_t nospflag; /* supress space character */
uint8_t flag;
#define INDIR 1 /* if '>(...)' appears, */
#define UNSIGNED 2 /* comparison is unsigned */
#define OFFADD 4 /* if '>&' appears, */
uint8_t reln; /* relation (0=eq, '>'=gt, etc) */
uint8_t vallen; /* length of string value, if any */
uint8_t type; /* int, short, long or string. */
uint8_t in_type; /* type of indirrection */
#define BYTE 1
#define SHORT 2
#define LONG 4
#define STRING 5
#define DATE 6
#define BESHORT 7
#define BELONG 8
#define BEDATE 9
#define LESHORT 10
#define LELONG 11
#define LEDATE 12
#define PSTRING 13
#define LDATE 14
#define BELDATE 15
#define LELDATE 16
#define REGEX 17
uint8_t in_op; /* operator for indirection */
uint8_t mask_op; /* operator for mask */
#define OPAND 1
#define OPOR 2
#define OPXOR 3
#define OPADD 4
#define OPMINUS 5
#define OPMULTIPLY 6
#define OPDIVIDE 7
#define OPMODULO 8
#define OPINVERSE 0x80
int32_t offset; /* offset to magic number */
int32_t in_offset; /* offset from indirection */
union VALUETYPE {
uint8_t b;
uint16_t h;
uint32_t l;
char s[MAXstring];
char *buf;
uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */
uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */
} value; /* either number or string */
uint32_t mask; /* mask before comparison with value */
char desc[MAXDESC]; /* description */
} __attribute__((__packed__));
#define BIT(A) (1 << (A))
#define STRING_IGNORE_LOWERCASE BIT(0)
#define STRING_COMPACT_BLANK BIT(1)
#define STRING_COMPACT_OPTIONAL_BLANK BIT(2)
#define CHAR_IGNORE_LOWERCASE 'c'
#define CHAR_COMPACT_BLANK 'B'
#define CHAR_COMPACT_OPTIONAL_BLANK 'b'
/* list of magic entries */
struct mlist {
struct magic *magic; /* array of magic entries */
uint32_t nmagic; /* number of entries in array */
struct mlist *next, *prev;
};
/*@unchecked@*/
extern char *progname; /* the program name */
/*@unchecked@*/
extern const char *magicfile; /* name of the magic file */
/*@unchecked@*/
extern int lineno; /* current line number in magic file */
/*@unchecked@*/
extern struct mlist mlist; /* list of arrays of magic entries */
/*@unchecked@*/
extern int debug; /* enable debugging? */
/*@unchecked@*/
extern int zflag; /* process compressed files? */
/*@unchecked@*/
extern int lflag; /* follow symbolic links? */
/*@unchecked@*/
extern int sflag; /* read/analyze block special files? */
/*@unchecked@*/
extern int iflag; /* Output types as mime-types */
#ifdef NEED_GETOPT
/*@unchecked@*/
extern int optind; /* From getopt(3) */
/*@unchecked@*/
extern char *optarg;
#endif
#ifndef HAVE_STRERROR
/*@unchecked@*/
extern int sys_nerr;
/*@unchecked@*/
extern char *sys_errlist[];
#define strerror(e) \
(((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
#endif
#ifndef HAVE_STRTOUL
#define strtoul(a, b, c) strtol(a, b, c)
#endif
#if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK)
#define QUICK
#endif
#if defined(__LCLINT__)
#define FILE_RCSID(id)
#else
#define FILE_RCSID(id) \
static const char *rcsid(const char *p) { \
return rcsid(p = id); \
}
#endif
extern int apprentice(const char *fn, int action)
/*@globals lineno, mlist, fileSystem @*/
/*@modifies lineno, mlist, fileSystem @*/;
extern int ascmagic(unsigned char *buf, int nbytes)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
/*@exits@*/
extern void error(const char *f, ...)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern void ckfputs(const char *str, FILE *fil)
/*@globals fileSystem @*/
/*@modifies fil, fileSystem @*/;
struct stat;
extern int fsmagic(const char *fn, /*@out@*/ struct stat *sb)
/*@globals fileSystem @*/
/*@modifies *sb, fileSystem @*/;
extern char *fmttime(long v, int local)
/*@*/;
extern int is_compress(const unsigned char *, int *)
/*@*/;
extern int is_tar(unsigned char *buf, int nbytes)
/*@*/;
extern void magwarn(const char *f, ...)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern void mdump(struct magic *m)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern void process(const char *inname, int wid)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern void showstr(FILE *fp, const char *s, int len)
/*@globals fileSystem @*/
/*@modifies fp, fileSystem @*/;
extern int softmagic(unsigned char *buf, int nbytes)
/*@globals fileSystem @*/
/*@modifies buf, fileSystem @*/;
extern int tryit(const char *fn, unsigned char *buf, int nb, int zfl)
/*@globals fileSystem @*/
/*@modifies buf, fileSystem @*/;
extern int zmagic(const char *fname, unsigned char *buf, int nbytes)
/*@globals fileSystem @*/
/*@modifies buf, fileSystem @*/;
extern void ckfprintf(FILE *f, const char *fmt, ...)
/*@globals fileSystem @*/
/*@modifies f, fileSystem @*/;
extern uint32_t signextend(struct magic *m, uint32_t v)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern void tryelf(int fd, unsigned char *buf, int nbytes)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/;
extern int pipe2file(int fd, void *startbuf, size_t nbytes)
/*@globals errno, fileSystem @*/
/*@modifies errno, fileSystem @*/;
#endif /* __file_h__ */
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