98 lines
3.2 KiB
Java
98 lines
3.2 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 7021870 8023431 8026756
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* @summary Reading last gzip chain member must not close the input stream.
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* Garbage following gzip entry must be ignored.
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*/
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipInputStream;
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import java.util.zip.ZipOutputStream;
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public class GZIPInZip {
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public static void main(String[] args)
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throws Throwable {
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doTest(false, false);
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doTest(false, true);
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doTest(true, false);
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doTest(true, true);
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}
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private static void doTest(final boolean appendGarbage,
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final boolean limitGISBuff)
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throws Throwable {
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byte[] buf;
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try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
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ZipOutputStream zos = new ZipOutputStream(baos)) {
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final byte[] xbuf = { 'x' };
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zos.putNextEntry(new ZipEntry("a.gz"));
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GZIPOutputStream gos1 = new GZIPOutputStream(zos);
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gos1.write(xbuf);
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gos1.finish();
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if (appendGarbage)
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zos.write(xbuf);
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zos.closeEntry();
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zos.putNextEntry(new ZipEntry("b.gz"));
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GZIPOutputStream gos2 = new GZIPOutputStream(zos);
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gos2.write(xbuf);
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gos2.finish();
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zos.closeEntry();
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zos.flush();
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buf = baos.toByteArray();
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}
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try (ByteArrayInputStream bais = new ByteArrayInputStream(buf);
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ZipInputStream zis = new ZipInputStream(bais)) {
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zis.getNextEntry();
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GZIPInputStream gis1 = limitGISBuff ?
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new GZIPInputStream(zis, 4) :
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new GZIPInputStream(zis);
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// try to read more than the entry has
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gis1.skip(2);
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try {
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zis.getNextEntry();
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} catch (IOException e) {
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throw new RuntimeException("ZIP stream was prematurely closed", e);
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}
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}
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}
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}
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