/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

/* @test

 * @bug 4313887 6838333

 * @summary Unit test for File.createTemporaryXXX (to be be moved to test/java/io/File)

 * @library ..

 */

import java.nio.file.*;

import static java.nio.file.StandardOpenOption.*;

import java.nio.file.attribute.*;

import java.io.File;

import java.io.IOException;

import java.util.Set;

public class TemporaryFiles {

    static void checkInTempDirectory(Path file) {

        Path tmpdir = Paths.get(System.getProperty("java.io.tmpdir"));

        if (!file.getParent().equals(tmpdir))

            throw new RuntimeException("Not in temporary directory");

    }

    static void checkFile(Path file) throws IOException {

        // check file is in temporary directory

        checkInTempDirectory(file);

        // check that file can be opened for reading and writing

        file.newByteChannel(READ).close();

        file.newByteChannel(WRITE).close();

        file.newByteChannel(READ,WRITE).close();

        // check file permissions are 0600 or more secure

        if (file.getFileStore().supportsFileAttributeView("posix")) {

            Set<PosixFilePermission> perms = Attributes

                .readPosixFileAttributes(file).permissions();

            perms.remove(PosixFilePermission.OWNER_READ);

            perms.remove(PosixFilePermission.OWNER_WRITE);

            if (!perms.isEmpty())

                throw new RuntimeException("Temporary file is not secure");

        }

    }

    static void checkDirectory(Path dir) throws IOException {

        // check directory is in temporary directory

        checkInTempDirectory(dir);

        // check directory is empty

        DirectoryStream<Path> stream = dir.newDirectoryStream();

        try {

            if (stream.iterator().hasNext())

                throw new RuntimeException("Tempory directory not empty");

        } finally {

            stream.close();

        }

        // check file permissions are 0700 or more secure

        if (dir.getFileStore().supportsFileAttributeView("posix")) {

            Set<PosixFilePermission> perms = Attributes

                .readPosixFileAttributes(dir).permissions();

            perms.remove(PosixFilePermission.OWNER_READ);

            perms.remove(PosixFilePermission.OWNER_WRITE);

            perms.remove(PosixFilePermission.OWNER_EXECUTE);

            if (!perms.isEmpty())

                throw new RuntimeException("Temporary directory is not secure");

        }

    }

    public static void main(String[] args) throws IOException {

        Path file = File.createTemporaryFile("blah", null).toPath();

        try {

            checkFile(file);

        } finally {

            TestUtil.deleteUnchecked(file);

        }

    }

}