030a13d8fe
4313887: New I/O: Improved filesystem interface 4607272: New I/O: Support asynchronous I/O Reviewed-by: sherman, chegar
77 lines
2.9 KiB
Java
77 lines
2.9 KiB
Java
/*
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* Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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import java.nio.file.*;
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import static java.nio.file.StandardOpenOption.*;
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import java.nio.file.attribute.*;
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import java.io.File;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.Set;
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public class TemporaryFiles {
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static void checkFile(Path file) throws IOException {
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// check file is in temporary directory
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Path tmpdir = Paths.get(System.getProperty("java.io.tmpdir"));
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if (!file.getParent().equals(tmpdir))
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throw new RuntimeException("Not in temporary directory");
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// check that file can be opened for reading and writing
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file.newByteChannel(READ).close();
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file.newByteChannel(WRITE).close();
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file.newByteChannel(READ,WRITE).close();
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// check file permissions are 0600 or more secure
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if (file.getFileStore().supportsFileAttributeView("posix")) {
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Set<PosixFilePermission> perms = Attributes
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.readPosixFileAttributes(file).permissions();
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perms.remove(PosixFilePermission.OWNER_READ);
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perms.remove(PosixFilePermission.OWNER_WRITE);
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if (!perms.isEmpty())
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throw new RuntimeException("Temporary file is not secure");
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}
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}
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public static void main(String[] args) throws IOException {
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Path file = File.createTempFile("blah", null, false).toPath();
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try {
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checkFile(file);
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} finally {
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TestUtil.deleteUnchecked(file);
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}
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// temporary file with deleteOnExit
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file = File.createTempFile("blah", "tmp", true).toPath();
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checkFile(file);
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// write path to temporary file to file so that calling script can
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// check that it is deleted
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OutputStream out = Paths.get(args[0]).newOutputStream();
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try {
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out.write(file.toString().getBytes());
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} finally {
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out.close();
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}
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}
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}
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