From ba4213c7350e7a145a142d0cbe54718a8c92b93c Mon Sep 17 00:00:00 2001
Subject: 8193682: Infinite loop in ZipOutputStream.close()
---
 .../java/util/zip/DeflaterOutputStream.java   |   9 +-
 .../java/util/zip/GZIPOutputStream.java       |  38 +++--
 .../java/util/zip/ZipOutputStream.java        |  96 ++++++------
 jdk/test/java/util/zip/CloseDeflaterTest.java | 147 ++++++++++++++++++
 4 files changed, 226 insertions(+), 64 deletions(-)
 create mode 100644 jdk/test/java/util/zip/CloseDeflaterTest.java

diff --git a/jdk/test/java/util/zip/CloseDeflaterTest.java b/jdk/test/java/util/zip/CloseDeflaterTest.java
new file mode 100644
index 000000000..8aa4960f5
--- /dev/null
+++ b/jdk/test/java/util/zip/CloseDeflaterTest.java
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2021, 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 8193682
+ * @summary Test Infinite loop while writing on closed GZipOutputStream , ZipOutputStream and JarOutputStream.
+ * @run testng CloseDeflaterTest
+ */
+import java.io.*;
+import java.util.Random;
+import java.util.jar.JarOutputStream;
+import java.util.zip.GZIPOutputStream;
+import java.util.zip.ZipOutputStream;
+import java.util.zip.ZipEntry;
+
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+import static org.testng.Assert.fail;
+
+
+public class CloseDeflaterTest {
+
+    //number of bytes to write
+    private static final int INPUT_LENGTH= 512;
+    //OutputStream that will throw an exception during a write operation
+    private static OutputStream outStream = new OutputStream() {
+        @Override
+        public void write(byte[] b, int off, int len) throws IOException {
+            //throw exception during write
+            throw new IOException();
+        }
+        @Override
+        public void write(byte b[]) throws IOException {}
+        @Override
+        public void write(int b) throws IOException {}
+    };
+    private static byte[] inputBytes = new byte[INPUT_LENGTH];
+    private static Random rand = new Random();
+
+    @DataProvider(name = "testgzipinput")
+    public Object[][] testGZipInput() {
+     //testGZip will close the GZipOutputStream using close() method when the boolean
+     //useCloseMethod is set to true and finish() method if the value is set to false
+     return new Object[][] {
+      { GZIPOutputStream.class, true },
+      { GZIPOutputStream.class, false },
+     };
+    }
+
+    @DataProvider(name = "testzipjarinput")
+    public Object[][] testZipAndJarInput() {
+     //testZipAndJarInput will perfrom write/closeEntry operations on JarOutputStream when the boolean
+     //useJar is set to true and on ZipOutputStream if the value is set to false
+     return new Object[][] {
+      { JarOutputStream.class, true },
+      { ZipOutputStream.class, false },
+     };
+    }
+
+    @BeforeTest
+    public void before_test()
+    {
+       //add inputBytes array with random bytes to write into Zip
+       rand.nextBytes(inputBytes);
+    }
+
+    //Test for infinite loop by writing bytes to closed GZIPOutputStream
+    @Test(dataProvider = "testgzipinput")
+    public void testGZip(Class<?> type, boolean useCloseMethod) throws IOException {
+        GZIPOutputStream zip = new GZIPOutputStream(outStream);
+        try {
+            zip.write(inputBytes, 0, INPUT_LENGTH);
+            //close zip
+            if(useCloseMethod) {
+               zip.close();
+            } else {
+               zip.finish();
+            }
+        } catch (IOException e) {
+            //expected
+        }
+        for (int i = 0; i < 3; i++) {
+            try {
+                //write on a closed GZIPOutputStream
+                zip.write(inputBytes, 0, INPUT_LENGTH);
+                fail("Deflater closed exception not thrown");
+            } catch (NullPointerException e) {
+                //expected , Deflater has been closed exception
+            }
+        }
+    }
+
+    //Test for infinite loop by writing bytes to closed ZipOutputStream/JarOutputStream
+    @Test(dataProvider = "testzipjarinput")
+    public void testZipCloseEntry(Class<?> type,boolean useJar) throws IOException {
+        ZipOutputStream zip = null;
+        if(useJar) {
+           zip = new JarOutputStream(outStream);
+        } else {
+           zip = new ZipOutputStream(outStream);
+        }
+        try {
+            zip.putNextEntry(new ZipEntry(""));
+        } catch (IOException e) {
+            //expected to throw IOException since putNextEntry calls write method
+        }
+        try {
+            zip.write(inputBytes, 0, INPUT_LENGTH);
+            //close zip entry
+            zip.closeEntry();
+        } catch (IOException e) {
+            //expected
+        }
+        for (int i = 0; i < 3; i++) {
+            try {
+                //write on a closed ZipOutputStream
+                zip.write(inputBytes, 0, INPUT_LENGTH);
+                fail("Deflater closed exception not thrown");
+            } catch (NullPointerException e) {
+                //expected , Deflater has been closed exception
+            }
+        }
+    }
+
+}
-- 
2.22.0