/*

 * Copyright 2014 Google, Inc.  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.

 */

package parse.jdk7156085;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.InputSource;

import org.xml.sax.helpers.DefaultHandler;

import org.testng.annotations.Test;

/**

 * JDK-7156085: ArrayIndexOutOfBoundsException throws in UTF8Reader of SAXParser

 * https://bugs.openjdk.java.net/browse/JDK-7156085

 *

 * XERCESJ-1257: buffer overflow in UTF8Reader for characters out of BMP

 * https://issues.apache.org/jira/browse/XERCESJ-1257

 */

public class UTF8ReaderBug {

    @Test

    public void shouldAcceptSupplementaryCharacters() throws Throwable {

        StringBuilder b = new StringBuilder("<xml>");

        for(int i = 5; i < 8223; i++) {

            b.append(' ');

        }

        // Add surrogate characters which overflow the buffer. This shows the need to place an

        // overflow check at --

        // com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:544)

        b.append("\uD835\uDC37");

        b.append("</xml>");

        sendToParser(b.toString());

    }

    private static void sendToParser(String b) throws Throwable {

        byte[] input = b.getBytes("UTF-8");

        ByteArrayInputStream in = new ByteArrayInputStream(input);

        SAXParserFactory  spf = SAXParserFactory.newInstance();

        SAXParser p = spf.newSAXParser();

        p.parse(new InputSource(in), new DefaultHandler());

    }

}