/*
 * Copyright (c) 2015, 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.
 */
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.io.UnsupportedEncodingException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Properties;
import java.util.logging.LogManager;


/**
 * @test
 * @bug 8075810
 * @run main/othervm InvalidEscapeConfigurationTest
 * @author danielfuchs
 */
public class InvalidEscapeConfigurationTest {

    public static void main(String[] args)
            throws UnsupportedEncodingException, IOException {
        String[] validEscapes = {
            "com.f\\u006fo.level = INF\\u004f",
            "com.f\\u006fo.level = INFO",
            "com.foo.level = INF\\u004f"
        };
        String[] invalidEscapes = {
            "com.fo\\u0O6f.level = INF\\u0O4f",
            "com.fo\\u0O6f.level = INFO",
            "com.foo.level = INF\\u0O4f"
        };
        for (String line : validEscapes) {
            test(line, true);
        }
        for (String line : invalidEscapes) {
            test(line, false);
        }
        try {
            Properties props = new Properties();
            props.load((InputStream)null);
            throw new RuntimeException("Properties.load(null): "
                    + "NullPointerException exception not raised");
        } catch (NullPointerException x) {
            System.out.println("Properties.load(null): "
                    + "got expected exception: " + x);
        }
        try {
            LogManager.getLogManager().readConfiguration(null);
            throw new RuntimeException("LogManager.readConfiguration(null): "
                    + "NullPointerException exception not raised");
        } catch (NullPointerException x) {
            System.out.println("LogManager.readConfiguration(null): "
                    + "got expected exception: " + x);
        }


    }

    public static void test(String line, boolean valid) throws IOException {
        String test = (valid ? "valid" : "invalid")
                + " line \"" +line + "\"";
        System.out.println("Testing " + test);

        // First verify that we get the expected result from Properties.load()
        try {
            ByteArrayInputStream bais =
                    new ByteArrayInputStream(line.getBytes("UTF-8"));
            Properties props = new Properties();
            props.load(bais);
            if (!valid) {
                throw new RuntimeException(test
                        + "\n\tProperties.load: expected exception not raised");
            } else {
                System.out.println("Properties.load passed for " + test);
            }
        } catch(IllegalArgumentException x) {
            if (!valid) {
                System.out.println(
                        "Properties.load: Got expected exception: "
                        + x + "\n\tfor " + test);
            } else {
                throw x;
            }
        }

        // Then verify that we get the expected result from
        // LogManager.readConfiguration
        try {
            String content = defaultConfiguration() + '\n' + line + '\n';
            ByteArrayInputStream bais =
                    new ByteArrayInputStream(content.getBytes("UTF-8"));
            LogManager.getLogManager().readConfiguration(bais);
            if (!valid) {
                throw new RuntimeException(test
                        + "\n\tLogManager.readConfiguration: "
                        + "expected exception not raised");
            } else {
                System.out.println("LogManager.readConfiguration passed for "
                        + test);
            }
        } catch(IOException x) {
            if (!valid) {
                System.out.println(
                        "LogManager.readConfiguration: Got expected exception: "
                        + x + "\n\tfor " + test);
            } else {
                throw x;
            }
        }
    }

    static String getConfigurationFileName() {
        String fname = System.getProperty("java.util.logging.config.file");
        if (fname == null) {
            fname = System.getProperty("java.home");
            if (fname == null) {
                throw new Error("Can't find java.home ??");
            }
            fname = Paths.get(fname, "conf", "logging.properties")
                    .toAbsolutePath().normalize().toString();
        }
        return fname;
    }

    static String defaultConfiguration() throws IOException {
        Properties props = new Properties();
        String fileName = getConfigurationFileName();
        if (Files.exists(Paths.get(fileName))) {
            try (InputStream is = new FileInputStream(fileName);) {
                props.load(is);
            } catch(IOException x) {
                throw new UncheckedIOException(x);
            }
        }
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        props.store(bos, null);
        return bos.toString();
    }

}