78 lines
3.0 KiB
Java
78 lines
3.0 KiB
Java
/*
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* Copyright (c) 2022, 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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/**
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* @test
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* @bug 8292327
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* @summary Test the case where Inflater.needsInput() is true but the native
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* inflater still has unwritten output in its internal buffer.
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*/
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.util.zip.Deflater;
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import java.util.zip.DeflaterInputStream;
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import java.util.zip.Inflater;
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import java.util.zip.InflaterInputStream;
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public class UnexpectedEndOfZlibStream {
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public static void main(String[] args) throws Exception {
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String original = "Readsuncompresseddataintoanarrayofbytes0123456789Ifcodelenis" +
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"notzerothemethodwillblockReadsuncompresseddataintoanarrayofbytes123456789";
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byte[] deflated =
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new DeflaterInputStream(
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new ByteArrayInputStream(original.getBytes("US-ASCII")),
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new Deflater(Deflater.DEFAULT_COMPRESSION, /*nowrap=*/ true)
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).readAllBytes();
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// using readAllBytes succeeds, the underlying gzip data seems to be well-formed
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byte[] inflated =
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new InflaterInputStream(
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new ByteArrayInputStream(deflated),
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new Inflater(/*nowrap=*/ true)
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).readAllBytes();
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if (!original.equals(new String(inflated, "US-ASCII"))) {
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throw new Exception("Inflated output differs from original");
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}
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// a 128 byte read followed by a 512 byte read fails after JDK-8281962
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InflaterInputStream is =
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new InflaterInputStream(
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new ByteArrayInputStream(deflated),
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new Inflater(/*nowrap=*/ true));
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byte[] buf = new byte[512];
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int n = is.read(buf, 0, 128);
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int pos = n;
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while (n > 0) {
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if ((n = is.read(buf, pos, 1)) > 0) { // Unexpected end of ZLIB input stream
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pos+= n;
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}
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}
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if (!original.equals(new String(buf, 0, pos, "US-ASCII"))) {
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throw new Exception("Inflated output differs from original");
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}
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}
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}
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