/*

 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * @test

 * @bug     6684104

 * @summary Test verifies that ImageIO checks all permissions required for

 *           the file cache usage:

 *

 *          no policy file: No security restrictions.

 *             Expected result: ImageIO creates file-cached stream.

 *

 *          w.policy: the case when we have read and write permissions

 *              for java.io.temp directory but have only write permission

 *              for a temp file.

 *             Expected result: ImageIO create a memory-cached stream

 *              image output stream.

 *

 *          rw.policy: the case when we  have read and write permissions

 *              for java.io.temp directory but have only read and write

 *              permission for a temp cache file.

 *             Expected result: ImageIO creates a memory-cached stream

 *              because temporary cache file can not be deleted.

 *

 *          rwd.policy: the case when we  have read and write permissions

 *              for java.io.temp directory and have all required permissions

 *             (read, write, and delete) for a temporary cache file.

 *             Expected result: ImageIO creates file-cached stream.

 *

 *           -Djava.security.debug=access can be used to verify file permissions.

 *

 * @run     main CachePermissionsTest true

 * @run     main/othervm CachePermissionsTest false w.policy

 * @run     main/othervm CachePermissionsTest false rw.policy

 * @run     main/othervm CachePermissionsTest true rwd.policy

 */

import java.io.File;

import java.io.IOException;

import java.io.ByteArrayOutputStream;

import javax.imageio.stream.ImageOutputStream;

import javax.imageio.ImageIO;

public class CachePermissionsTest {

    public static void main(String[] args) {

        boolean isFileCacheExpected =

            Boolean.valueOf(args[0]).booleanValue();

        System.out.println("Is file cache expected: " + isFileCacheExpected);

        ImageIO.setUseCache(true);

        System.out.println("java.io.tmpdir is " + System.getProperty("java.io.tmpdir"));

        if (args.length > 1) {

            String testsrc = System.getProperty("test.src", ".");

            String policy = testsrc + File.separator + args[1];

            System.out.println("Policy file: " + policy);

            System.setProperty("java.security.policy", policy);

            System.out.println("Install security manager...");

            System.setSecurityManager(new SecurityManager());

        }

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        try {

            ImageOutputStream ios = ImageIO.createImageOutputStream(baos);

            boolean isFileCache = ios.isCachedFile();

            System.out.println("Is file cache used: " + isFileCache);

            if (isFileCache !=isFileCacheExpected) {

                System.out.println("WARNING: file chace usage is not as expected!");

            }

            System.out.println("Verify data writing...");

            for (int i = 0; i < 8192; i++) {

                ios.writeInt(i);

            }

            System.out.println("Verify data reading...");

            ios.seek(0L);

            for (int i = 0; i < 8192; i++) {

                int j = ios.readInt();

                if (i != j) {

                    throw new RuntimeException("Wrong data in the stream " + j + " instead of " + i);

                }

            }

            System.out.println("Verify stream closing...");

            ios.close();

        } catch (IOException e) {

            /*

             * Something went wrong?

             */

            throw new RuntimeException("Test FAILED.", e);

        } catch (SecurityException e) {

            /*

             * We do not expect security execptions here:

             * we there are any security restrition, ImageIO

             * should swith to memory-cached streams, instead

             * of using file cache.

             */

            throw new RuntimeException("Test FAILED.", e);

        }

    }

}