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-rw-r--r--contrib/file/fsmagic.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/contrib/file/fsmagic.c b/contrib/file/fsmagic.c
deleted file mode 100644
index e04f598..0000000
--- a/contrib/file/fsmagic.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/*
- * Copyright (c) Ian F. Darwin 1986-1995.
- * Software written by Ian F. Darwin and others;
- * maintained 1995-present by Christos Zoulas and others.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice immediately at the beginning of the file, without modification,
- * this list of conditions, and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * fsmagic - magic based on filesystem info - directory, special files, etc.
- */
-
-#include "file.h"
-#include "magic.h"
-#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <sys/stat.h>
-/* Since major is a function on SVR4, we cannot use `ifndef major'. */
-#ifdef MAJOR_IN_MKDEV
-# include <sys/mkdev.h>
-# define HAVE_MAJOR
-#endif
-#ifdef MAJOR_IN_SYSMACROS
-# include <sys/sysmacros.h>
-# define HAVE_MAJOR
-#endif
-#ifdef major /* Might be defined in sys/types.h. */
-# define HAVE_MAJOR
-#endif
-
-#ifndef HAVE_MAJOR
-# define major(dev) (((dev) >> 8) & 0xff)
-# define minor(dev) ((dev) & 0xff)
-#endif
-#undef HAVE_MAJOR
-
-#ifndef lint
-FILE_RCSID("@(#)$File: fsmagic.c,v 1.48 2007/10/17 19:33:31 christos Exp $")
-#endif /* lint */
-
-protected int
-file_fsmagic(struct magic_set *ms, const char *fn, struct stat *sb)
-{
- int ret = 0;
- int mime = ms->flags & MAGIC_MIME;
-#ifdef S_IFLNK
- char buf[BUFSIZ+4];
- int nch;
- struct stat tstatbuf;
-#endif
-
- if (fn == NULL)
- return 0;
-
- /*
- * Fstat is cheaper but fails for files you don't have read perms on.
- * On 4.2BSD and similar systems, use lstat() to identify symlinks.
- */
-#ifdef S_IFLNK
- if ((ms->flags & MAGIC_SYMLINK) == 0)
- ret = lstat(fn, sb);
- else
-#endif
- ret = stat(fn, sb); /* don't merge into if; see "ret =" above */
-
- if (ret) {
- if (ms->flags & MAGIC_ERROR) {
- file_error(ms, errno, "cannot stat `%s'", fn);
- return -1;
- }
- if (file_printf(ms, "cannot open `%s' (%s)",
- fn, strerror(errno)) == -1)
- return -1;
- return 1;
- }
-
- if (mime) {
- if ((sb->st_mode & S_IFMT) != S_IFREG) {
- if ((mime & MAGIC_MIME_TYPE) &&
- file_printf(ms, "application/x-not-regular-file")
- == -1)
- return -1;
- return 1;
- }
- }
- else {
-#ifdef S_ISUID
- if (sb->st_mode & S_ISUID)
- if (file_printf(ms, "setuid ") == -1)
- return -1;
-#endif
-#ifdef S_ISGID
- if (sb->st_mode & S_ISGID)
- if (file_printf(ms, "setgid ") == -1)
- return -1;
-#endif
-#ifdef S_ISVTX
- if (sb->st_mode & S_ISVTX)
- if (file_printf(ms, "sticky ") == -1)
- return -1;
-#endif
- }
-
- switch (sb->st_mode & S_IFMT) {
- case S_IFDIR:
- if (file_printf(ms, "directory") == -1)
- return -1;
- return 1;
-#ifdef S_IFCHR
- case S_IFCHR:
- /*
- * If -s has been specified, treat character special files
- * like ordinary files. Otherwise, just report that they
- * are block special files and go on to the next file.
- */
- if ((ms->flags & MAGIC_DEVICES) != 0)
- break;
-#ifdef HAVE_ST_RDEV
-# ifdef dv_unit
- if (file_printf(ms, "character special (%d/%d/%d)",
- major(sb->st_rdev), dv_unit(sb->st_rdev),
- dv_subunit(sb->st_rdev)) == -1)
- return -1;
-# else
- if (file_printf(ms, "character special (%ld/%ld)",
- (long) major(sb->st_rdev), (long) minor(sb->st_rdev)) == -1)
- return -1;
-# endif
-#else
- if (file_printf(ms, "character special") == -1)
- return -1;
-#endif
- return 1;
-#endif
-#ifdef S_IFBLK
- case S_IFBLK:
- /*
- * If -s has been specified, treat block special files
- * like ordinary files. Otherwise, just report that they
- * are block special files and go on to the next file.
- */
- if ((ms->flags & MAGIC_DEVICES) != 0)
- break;
-#ifdef HAVE_ST_RDEV
-# ifdef dv_unit
- if (file_printf(ms, "block special (%d/%d/%d)",
- major(sb->st_rdev), dv_unit(sb->st_rdev),
- dv_subunit(sb->st_rdev)) == -1)
- return -1;
-# else
- if (file_printf(ms, "block special (%ld/%ld)",
- (long)major(sb->st_rdev), (long)minor(sb->st_rdev)) == -1)
- return -1;
-# endif
-#else
- if (file_printf(ms, "block special") == -1)
- return -1;
-#endif
- return 1;
-#endif
- /* TODO add code to handle V7 MUX and Blit MUX files */
-#ifdef S_IFIFO
- case S_IFIFO:
- if((ms->flags & MAGIC_DEVICES) != 0)
- break;
- if (file_printf(ms, "fifo (named pipe)") == -1)
- return -1;
- return 1;
-#endif
-#ifdef S_IFDOOR
- case S_IFDOOR:
- if (file_printf(ms, "door") == -1)
- return -1;
- return 1;
-#endif
-#ifdef S_IFLNK
- case S_IFLNK:
- if ((nch = readlink(fn, buf, BUFSIZ-1)) <= 0) {
- if (ms->flags & MAGIC_ERROR) {
- file_error(ms, errno, "unreadable symlink `%s'",
- fn);
- return -1;
- }
- if (file_printf(ms,
- "unreadable symlink `%s' (%s)", fn,
- strerror(errno)) == -1)
- return -1;
- return 1;
- }
- buf[nch] = '\0'; /* readlink(2) forgets this */
-
- /* If broken symlink, say so and quit early. */
- if (*buf == '/') {
- if (stat(buf, &tstatbuf) < 0) {
- if (ms->flags & MAGIC_ERROR) {
- file_error(ms, errno,
- "broken symbolic link to `%s'", buf);
- return -1;
- }
- if (file_printf(ms, "broken symbolic link to `%s'",
- buf) == -1)
- return -1;
- return 1;
- }
- }
- else {
- char *tmp;
- char buf2[BUFSIZ+BUFSIZ+4];
-
- if ((tmp = strrchr(fn, '/')) == NULL) {
- tmp = buf; /* in current directory anyway */
- } else {
- if (tmp - fn + 1 > BUFSIZ) {
- if (ms->flags & MAGIC_ERROR) {
- file_error(ms, 0,
- "path too long: `%s'", buf);
- return -1;
- }
- if (file_printf(ms,
- "path too long: `%s'", fn) == -1)
- return -1;
- return 1;
- }
- (void)strcpy(buf2, fn); /* take dir part */
- buf2[tmp - fn + 1] = '\0';
- (void)strcat(buf2, buf); /* plus (rel) link */
- tmp = buf2;
- }
- if (stat(tmp, &tstatbuf) < 0) {
- if (ms->flags & MAGIC_ERROR) {
- file_error(ms, errno,
- "broken symbolic link to `%s'",
- buf);
- return -1;
- }
- if (file_printf(ms,
- "broken symbolic link to `%s'", buf) == -1)
- return -1;
- return 1;
- }
- }
-
- /* Otherwise, handle it. */
- if ((ms->flags & MAGIC_SYMLINK) != 0) {
- const char *p;
- ms->flags &= MAGIC_SYMLINK;
- p = magic_file(ms, buf);
- ms->flags |= MAGIC_SYMLINK;
- return p != NULL ? 1 : -1;
- } else { /* just print what it points to */
- if (file_printf(ms, "symbolic link to `%s'",
- buf) == -1)
- return -1;
- }
- return 1;
-#endif
-#ifdef S_IFSOCK
-#ifndef __COHERENT__
- case S_IFSOCK:
- if (file_printf(ms, "socket") == -1)
- return -1;
- return 1;
-#endif
-#endif
- case S_IFREG:
- break;
- default:
- file_error(ms, 0, "invalid mode 0%o", sb->st_mode);
- return -1;
- /*NOTREACHED*/
- }
-
- /*
- * regular file, check next possibility
- *
- * If stat() tells us the file has zero length, report here that
- * the file is empty, so we can skip all the work of opening and
- * reading the file.
- * But if the -s option has been given, we skip this optimization,
- * since on some systems, stat() reports zero size for raw disk
- * partitions. (If the block special device really has zero length,
- * the fact that it is empty will be detected and reported correctly
- * when we read the file.)
- */
- if ((ms->flags & MAGIC_DEVICES) == 0 && sb->st_size == 0) {
- if ((!mime || (mime & MAGIC_MIME_TYPE)) &&
- file_printf(ms, mime ? "application/x-empty" :
- "empty") == -1)
- return -1;
- return 1;
- }
- return 0;
-}
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