#include "magic.h"
#include "file.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef RESTORE_TIME
# if (__COHERENT__ >= 0x420)
# include <sys/utime.h>
# else
# ifdef USE_UTIMES
# include <sys/time.h>
# else
# include <utime.h>
# endif
# endif
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <netinet/in.h>
#include "patchlevel.h"
#ifndef lint
FILE_RCSID("@(#)$Id: file.c,v 1.1 2003/07/02 18:01:22 eseidel Exp $")
#endif
#ifdef S_IFLNK
#define SYMLINKFLAG "L"
#else
#define SYMLINKFLAG ""
#endif
# define USAGE "Usage: %s [-bcik" SYMLINKFLAG "nNsvz] [-f namefile] [-F separator] [-m magicfiles] file...\n %s -C -m magicfiles\n"
#ifndef MAGIC
# define MAGIC "/etc/magic"
#endif
#ifndef MAXPATHLEN
#define MAXPATHLEN 512
#endif
private int
bflag = 0,
nopad = 0,
nobuffer = 0,
kflag = 0;
private const char *magicfile = 0;
private const char *default_magicfile = MAGIC;
private char *separator = ":";
private char *progname;
private struct magic_set *magic;
private void unwrap(char *);
private void usage(void);
#ifdef HAVE_GETOPT_H
private void help(void);
#endif
#if 0
private int byteconv4(int, int, int);
private short byteconv2(int, int, int);
#endif
int main(int, char *[]);
private void process(const char *, int);
private void load(const char *, int);
int
main(int argc, char *argv[])
{
int c;
int action = 0, didsomefiles = 0, errflg = 0;
int flags = 0;
char *mime, *home, *usermagic;
struct stat sb;
#define OPTSTRING "bcdf:F:ikm:nNsvzCL"
#ifdef HAVE_GETOPT_LONG
int longindex;
private struct option long_options[] =
{
{"version", 0, 0, 'v'},
{"help", 0, 0, 0},
{"brief", 0, 0, 'b'},
{"checking-printout", 0, 0, 'c'},
{"debug", 0, 0, 'd'},
{"files-from", 1, 0, 'f'},
{"separator", 1, 0, 'F'},
{"mime", 0, 0, 'i'},
{"keep-going", 0, 0, 'k'},
#ifdef S_IFLNK
{"dereference", 0, 0, 'L'},
#endif
{"magic-file", 1, 0, 'm'},
{"uncompress", 0, 0, 'z'},
{"no-buffer", 0, 0, 'n'},
{"no-pad", 0, 0, 'N'},
{"special-files", 0, 0, 's'},
{"compile", 0, 0, 'C'},
{0, 0, 0, 0},
};
#endif
#ifdef LC_CTYPE
setlocale(LC_CTYPE, "");
#endif
#ifdef __EMX__
_wildcard(&argc, &argv);
#endif
if ((progname = strrchr(argv[0], '/')) != NULL)
progname++;
else
progname = argv[0];
magicfile = default_magicfile;
if ((usermagic = getenv("MAGIC")) != NULL)
magicfile = usermagic;
else
if ((home = getenv("HOME")) != NULL) {
if ((usermagic = malloc(strlen(home) + 8)) != NULL) {
(void)strcpy(usermagic, home);
(void)strcat(usermagic, "/.magic");
if (stat(usermagic, &sb)<0)
free(usermagic);
else
magicfile = usermagic;
}
}
#ifndef HAVE_GETOPT_LONG
while ((c = getopt(argc, argv, OPTSTRING)) != -1)
#else
while ((c = getopt_long(argc, argv, OPTSTRING, long_options,
&longindex)) != -1)
#endif
switch (c) {
#ifdef HAVE_GETOPT_LONG
case 0 :
if (longindex == 1)
help();
break;
#endif
case 'b':
++bflag;
break;
case 'c':
action = FILE_CHECK;
break;
case 'C':
action = FILE_COMPILE;
break;
case 'd':
flags |= MAGIC_DEBUG;
break;
case 'f':
if(action)
usage();
load(magicfile, flags);
unwrap(optarg);
++didsomefiles;
break;
case 'F':
separator = optarg;
break;
case 'i':
flags |= MAGIC_MIME;
if ((mime = malloc(strlen(magicfile) + 6)) != NULL) {
(void)strcpy(mime, magicfile);
(void)strcat(mime, ".mime");
magicfile = mime;
}
break;
case 'k':
kflag = 1;
break;
case 'm':
magicfile = optarg;
break;
case 'n':
++nobuffer;
break;
case 'N':
++nopad;
break;
case 's':
flags |= MAGIC_DEVICES;
break;
case 'v':
(void) fprintf(stdout, "%s-%d.%.2d\n", progname,
FILE_VERSION_MAJOR, patchlevel);
(void) fprintf(stdout, "magic file from %s\n",
magicfile);
return 1;
case 'z':
flags |= MAGIC_COMPRESS;
break;
#ifdef S_IFLNK
case 'L':
flags |= MAGIC_SYMLINK;
break;
#endif
case '?':
default:
errflg++;
break;
}
if (errflg) {
usage();
}
switch(action) {
case FILE_CHECK:
case FILE_COMPILE:
magic = magic_open(flags);
if (magic == NULL) {
(void)fprintf(stderr, "%s: %s\n", progname,
strerror(errno));
return 1;
}
return action == FILE_CHECK ? magic_check(magic, magicfile) :
magic_compile(magic, magicfile);
default:
load(magicfile, flags);
break;
}
if (optind == argc) {
if (!didsomefiles) {
usage();
}
}
else {
int i, wid, nw;
for (wid = 0, i = optind; i < argc; i++) {
nw = strlen(argv[i]);
if (nw > wid)
wid = nw;
}
for (; optind < argc; optind++)
process(argv[optind], wid);
}
return 0;
}
private void
load(const char *m, int flags)
{
if (magic)
return;
magic = magic_open(flags);
if (magic == NULL) {
(void)fprintf(stderr, "%s: %s\n", progname, strerror(errno));
exit(1);
}
if (magic_load(magic, magicfile) == -1) {
(void)fprintf(stderr, "%s: %s\n",
progname, magic_error(magic));
exit(1);
}
}
private void
unwrap(char *fn)
{
char buf[MAXPATHLEN];
FILE *f;
int wid = 0, cwid;
if (strcmp("-", fn) == 0) {
f = stdin;
wid = 1;
} else {
if ((f = fopen(fn, "r")) == NULL) {
(void)fprintf(stderr, "%s: Cannot open `%s' (%s).\n",
progname, fn, strerror(errno));
exit(1);
}
while (fgets(buf, MAXPATHLEN, f) != NULL) {
cwid = strlen(buf) - 1;
if (cwid > wid)
wid = cwid;
}
rewind(f);
}
while (fgets(buf, MAXPATHLEN, f) != NULL) {
buf[strlen(buf)-1] = '\0';
process(buf, wid);
if(nobuffer)
(void) fflush(stdout);
}
(void) fclose(f);
}
private void
process(const char *inname, int wid)
{
const char *type;
int std_in = strcmp(inname, "-") == 0;
if (wid > 0 && !bflag)
(void) printf("%s%s%*s ", std_in ? "/dev/stdin" : inname,
separator, (int) (nopad ? 0 : (wid - strlen(inname))), "");
type = magic_file(magic, std_in ? NULL : inname);
if (type == NULL)
printf("ERROR: %s\n", magic_error(magic));
else
printf("%s\n", type);
}
#if 0
private int
byteconv4(int from, int same, int big_endian)
{
if (same)
return from;
else if (big_endian) {
union {
int i;
char c[4];
} retval, tmpval;
tmpval.i = from;
retval.c[0] = tmpval.c[3];
retval.c[1] = tmpval.c[2];
retval.c[2] = tmpval.c[1];
retval.c[3] = tmpval.c[0];
return retval.i;
}
else
return ntohl(from);
}
private short
byteconv2(int from, int same, int big_endian)
{
if (same)
return from;
else if (big_endian) {
union {
short s;
char c[2];
} retval, tmpval;
tmpval.s = (short) from;
retval.c[0] = tmpval.c[1];
retval.c[1] = tmpval.c[0];
return retval.s;
}
else
return ntohs(from);
}
#endif
private void
usage(void)
{
(void)fprintf(stderr, USAGE, progname, progname);
#ifdef HAVE_GETOPT_H
(void)fputs("Try `file --help' for more information.\n", stderr);
#endif
exit(1);
}
#ifdef HAVE_GETOPT_H
private void
help(void)
{
puts(
"Usage: file [OPTION]... [FILE]...\n"
"Determine file type of FILEs.\n"
"\n"
" -m, --magic-file LIST use LIST as a colon-separated list of magic\n"
" number files\n"
" -z, --uncompress try to look inside compressed files\n"
" -b, --brief do not prepend filenames to output lines\n"
" -c, --checking-printout print the parsed form of the magic file, use in\n"
" conjunction with -m to debug a new magic file\n"
" before installing it\n"
" -f, --files-from FILE read the filenames to be examined from FILE\n"
" -F, --separator string use string as separator instead of `:'\n"
" -i, --mime output mime type strings\n"
" -k, --keep-going don't stop at the first match\n"
" -L, --dereference causes symlinks to be followed\n"
" -n, --no-buffer do not buffer output\n"
" -N, --no-pad do not pad output\n"
" -s, --special-files treat special (block/char devices) files as\n"
" ordinary ones\n"
" --help display this help and exit\n"
" --version output version information and exit\n"
);
exit(0);
}
#endif