144 lines
5.0 KiB
C
144 lines
5.0 KiB
C
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/* @(#)file.h 1.12 09/07/13 joerg */
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/*
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* file.h - definitions for file(1) program
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* @(#)$Id: file.h,v 1.25 1997/01/15 19:28:35 christos Exp $
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*
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* Copyright (c) Ian F. Darwin, 1987.
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* Written by Ian F. Darwin.
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*
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* This software is not subject to any export provision of the United States
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* Department of Commerce, and may be exported to any country or planet.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __file_h__
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#define __file_h__
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#include <schily/utypes.h>
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#ifndef HOWMANY
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# define HOWMANY 8192 /* how much of the file to look at */
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#endif
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#define MAXMAGIS 1000 /* max entries in /etc/magic */
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#define MAXDESC 50 /* max leng of text description */
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#define MAXstring 32 /* max leng of "string" types */
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struct magic {
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short flag;
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#define INDIR 1 /* if '>(...)' appears, */
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#define UNSIGNED 2 /* comparison is unsigned */
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#define ADD 4 /* if '>&' appears, */
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short cont_level; /* level of ">" */
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struct {
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char type; /* byte short long */
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Int32_t offset; /* offset from indirection */
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} in;
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Int32_t offset; /* offset to magic number */
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unsigned char reln; /* relation (0=eq, '>'=gt, etc) */
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char type; /* int, short, long or string. */
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char vallen; /* length of string value, if any */
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#define BYTE 1
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#define SHORT 2
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#define LONG 4
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#define STRING 5
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#define DATE 6
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#define BESHORT 7
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#define BELONG 8
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#define BEDATE 9
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#define LESHORT 10
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#define LELONG 11
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#define LEDATE 12
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union VALUETYPE {
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unsigned char b;
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unsigned short h;
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UInt32_t l;
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char s[MAXstring];
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unsigned char hs[2]; /* 2 bytes of a fixed-endian "short" */
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unsigned char hl[4]; /* 2 bytes of a fixed-endian "long" */
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} value; /* either number or string */
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UInt32_t mask; /* mask before comparison with value */
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char nospflag; /* supress space character */
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char desc[MAXDESC]; /* description */
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};
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#include <schily/stdio.h>
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extern int init_magic __PR((char *));
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extern int ascmagic __PR((unsigned char *, int));
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/*extern void error __PR((const char *, ...));*/
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extern void ckfputs __PR((const char *, FILE *));
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struct stat;
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extern int fsmagic __PR((const char *, struct stat *));
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extern int is_compress __PR((const unsigned char *, int *));
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extern int is_tar __PR((unsigned char *, int));
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extern void magwarn __PR((const char *, ...));
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extern void mdump __PR((struct magic *));
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extern char *get_magic_magic __PR((const char *));
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extern void showstr __PR((FILE *, const char *, int));
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extern char *softmagic __PR((unsigned char *, int));
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extern int tryit __PR((unsigned char *, int, int));
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extern int zmagic __PR((unsigned char *, int));
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extern void ckfprintf __PR((FILE *, const char *, ...));
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#ifndef __BEOS__
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extern UInt32_t signextend __PR((struct magic *, UInt32_t));
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#endif /* __BEOS__ */
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extern int internatmagic __PR((unsigned char *, int));
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extern void tryelf __PR((int, char *, int));
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extern char *progname; /* the program name */
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extern char *magicfile; /* name of the magic file */
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extern struct magic *__f_magic; /* array of magic entries */
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extern int __f_nmagic; /* number of valid magic[]s */
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extern int debug; /* enable debugging? */
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extern int zflag; /* process compressed files? */
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extern int lflag; /* follow symbolic links? */
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#if defined(sun) || defined(__sun__) || defined (__sun)
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# if defined(__svr4) || defined (__SVR4) || defined(__svr4__)
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# define SOLARIS
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# else
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# define SUNOS
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# endif
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#endif
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#ifndef HAVE_STRERROR
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extern int sys_nerr;
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extern char *sys_errlist[];
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#define strerror(e) \
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(((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
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#endif
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#ifndef HAVE_STRTOUL
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#define strtoul(a, b, c) strtol(a, b, c)
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#endif
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#endif /* __file_h__ */
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