Annotation of src/usr.bin/file/file.h, Revision 1.12
1.12 ! ian 1: /* $OpenBSD: file.h,v 1.11 2003/03/03 22:24:08 ian Exp $ */
1.3 millert 2:
1.1 deraadt 3: /*
4: * file.h - definitions for file(1) program
5: *
1.12 ! ian 6: * Copyright (c) Ian F. Darwin 1986-1995.
! 7: * Software written by Ian F. Darwin and others;
! 8: * maintained 1995-present by Christos Zoulas and others.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice immediately at the beginning of the file, without modification,
! 15: * this list of conditions, and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by Ian F. Darwin and others.
! 22: * 4. The name of the author may not be used to endorse or promote products
! 23: * derived from this software without specific prior written permission.
! 24: *
! 25: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 29: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 35: * SUCH DAMAGE.
1.1 deraadt 36: */
37:
1.3 millert 38: #ifndef __file_h__
39: #define __file_h__
40:
1.11 ian 41: #ifdef HAVE_CONFIG_H
42: #include "config.h"
43: #endif
44:
45: #include <errno.h>
46: #include <stdio.h>
47: #ifdef HAVE_STDINT_H
48: #include <stdint.h>
49: #elif defined(HAVE_INTTYPES_H)
50: #include <inttypes.h>
51: #endif
52:
1.1 deraadt 53: #ifndef HOWMANY
54: # define HOWMANY 8192 /* how much of the file to look at */
55: #endif
1.7 ian 56: #define MAXMAGIS 5000 /* max entries in /etc/magic */
1.1 deraadt 57: #define MAXDESC 50 /* max leng of text description */
58: #define MAXstring 32 /* max leng of "string" types */
59:
60: struct magic {
61: short flag;
62: #define INDIR 1 /* if '>(...)' appears, */
63: #define UNSIGNED 2 /* comparison is unsigned */
1.3 millert 64: #define ADD 4 /* if '>&' appears, */
1.1 deraadt 65: short cont_level; /* level of ">" */
66: struct {
1.10 itojun 67: int8_t type; /* byte short long */
68: int32_t offset; /* offset from indirection */
1.1 deraadt 69: } in;
1.10 itojun 70: int32_t offset; /* offset to magic number */
1.1 deraadt 71: unsigned char reln; /* relation (0=eq, '>'=gt, etc) */
1.10 itojun 72: int8_t type; /* int, short, long or string. */
1.1 deraadt 73: char vallen; /* length of string value, if any */
74: #define BYTE 1
75: #define SHORT 2
76: #define LONG 4
77: #define STRING 5
78: #define DATE 6
79: #define BESHORT 7
80: #define BELONG 8
81: #define BEDATE 9
82: #define LESHORT 10
83: #define LELONG 11
84: #define LEDATE 12
85: union VALUETYPE {
86: unsigned char b;
87: unsigned short h;
1.10 itojun 88: uint32_t l;
1.1 deraadt 89: char s[MAXstring];
90: unsigned char hs[2]; /* 2 bytes of a fixed-endian "short" */
91: unsigned char hl[4]; /* 2 bytes of a fixed-endian "long" */
92: } value; /* either number or string */
1.10 itojun 93: uint32_t mask; /* mask before comparison with value */
1.1 deraadt 94: char nospflag; /* supress space character */
95: char desc[MAXDESC]; /* description */
96: };
97:
1.8 millert 98: extern int apprentice(char *, int);
99: extern int ascmagic(unsigned char *, int);
100: extern void ckfputs(const char *, FILE *);
1.1 deraadt 101: struct stat;
1.8 millert 102: extern int fsmagic(const char *, struct stat *);
103: extern int is_compress(const unsigned char *, int *);
104: extern int is_tar(unsigned char *, int);
105: extern void mdump(struct magic *);
106: extern void process(const char *, int);
107: extern void showstr(FILE *, const char *, int);
108: extern int softmagic(unsigned char *, int);
109: extern int tryit(unsigned char *, int, int);
110: extern int zmagic(unsigned char *, int);
111: extern void ckfprintf(FILE *, const char *, ...);
1.10 itojun 112: extern uint32_t signextend(struct magic *, uint32_t);
1.8 millert 113: extern int internatmagic(unsigned char *, int);
1.11 ian 114: extern void tryelf(int, unsigned char *, int);
1.1 deraadt 115:
116:
117: extern int errno; /* Some unixes don't define this.. */
118:
119: extern char *progname; /* the program name */
120: extern char *magicfile; /* name of the magic file */
121: extern int lineno; /* current line number in magic file */
122:
123: extern struct magic *magic; /* array of magic entries */
124: extern int nmagic; /* number of valid magic[]s */
125:
126:
127: extern int debug; /* enable debugging? */
128: extern int zflag; /* process compressed files? */
129: extern int lflag; /* follow symbolic links? */
130:
131: extern int optind; /* From getopt(3) */
132: extern char *optarg;
133:
1.3 millert 134: #if defined(sun) || defined(__sun__) || defined (__sun)
135: # if defined(__svr4) || defined (__SVR4) || defined(__svr4__)
136: # define SOLARIS
137: # else
138: # define SUNOS
139: # endif
140: #endif
141:
142:
143: #if !defined(__STDC__) || defined(SUNOS) || defined(__convex__)
1.1 deraadt 144: extern int sys_nerr;
145: extern char *sys_errlist[];
146: #define strerror(e) \
147: (((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
148: #define strtoul(a, b, c) strtol(a, b, c)
149: #endif
150:
151: #ifndef MAXPATHLEN
152: #define MAXPATHLEN 512
153: #endif
1.3 millert 154:
155: #endif /* __file_h__ */
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