1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* $OpenBSD: file.h,v 1.9 2002/02/17 19:42:30 millert Exp $ */
/*
* file.h - definitions for file(1) program
*
* 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__
typedef int8_t int8;
typedef int32_t int32;
typedef u_int32_t uint32;
#ifndef HOWMANY
# define HOWMANY 8192 /* how much of the file to look at */
#endif
#define MAXMAGIS 5000 /* max entries in /etc/magic */
#define MAXDESC 50 /* max leng of text description */
#define MAXstring 32 /* max leng of "string" types */
struct magic {
short flag;
#define INDIR 1 /* if '>(...)' appears, */
#define UNSIGNED 2 /* comparison is unsigned */
#define ADD 4 /* if '>&' appears, */
short cont_level; /* level of ">" */
struct {
int8 type; /* byte short long */
int32 offset; /* offset from indirection */
} in;
int32 offset; /* offset to magic number */
unsigned char reln; /* relation (0=eq, '>'=gt, etc) */
int8 type; /* int, short, long or string. */
char vallen; /* length of string value, if any */
#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
union VALUETYPE {
unsigned char b;
unsigned short h;
uint32 l;
char s[MAXstring];
unsigned char hs[2]; /* 2 bytes of a fixed-endian "short" */
unsigned char hl[4]; /* 2 bytes of a fixed-endian "long" */
} value; /* either number or string */
uint32 mask; /* mask before comparison with value */
char nospflag; /* supress space character */
char desc[MAXDESC]; /* description */
};
extern int apprentice(char *, int);
extern int ascmagic(unsigned char *, int);
extern void ckfputs(const char *, FILE *);
struct stat;
extern int fsmagic(const char *, struct stat *);
extern int is_compress(const unsigned char *, int *);
extern int is_tar(unsigned char *, int);
extern void mdump(struct magic *);
extern void process(const char *, int);
extern void showstr(FILE *, const char *, int);
extern int softmagic(unsigned char *, int);
extern int tryit(unsigned char *, int, int);
extern int zmagic(unsigned char *, int);
extern void ckfprintf(FILE *, const char *, ...);
extern uint32 signextend(struct magic *, unsigned int32);
extern int internatmagic(unsigned char *, int);
extern void tryelf(int, char *, int);
extern int errno; /* Some unixes don't define this.. */
extern char *progname; /* the program name */
extern char *magicfile; /* name of the magic file */
extern int lineno; /* current line number in magic file */
extern struct magic *magic; /* array of magic entries */
extern int nmagic; /* number of valid magic[]s */
extern int debug; /* enable debugging? */
extern int zflag; /* process compressed files? */
extern int lflag; /* follow symbolic links? */
extern int optind; /* From getopt(3) */
extern char *optarg;
#if defined(sun) || defined(__sun__) || defined (__sun)
# if defined(__svr4) || defined (__SVR4) || defined(__svr4__)
# define SOLARIS
# else
# define SUNOS
# endif
#endif
#if !defined(__STDC__) || defined(SUNOS) || defined(__convex__)
extern int sys_nerr;
extern char *sys_errlist[];
#define strerror(e) \
(((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
#define strtoul(a, b, c) strtol(a, b, c)
#endif
#ifndef MAXPATHLEN
#define MAXPATHLEN 512
#endif
#endif /* __file_h__ */
|
