undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/util/zip/GZIP/GZIPInputStreamRead.java
+++ b/test/jdk/java/util/zip/GZIP/GZIPInputStreamRead.java
@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2010, 2011, 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 4691425
+ * @summary Test the read and write of GZIPInput/OutputStream, including
+ *          concatenated .gz inputstream
+ * @key randomness
+ */
+
+import java.io.*;
+import java.util.*;
+import java.util.zip.*;
+
+public class GZIPInputStreamRead {
+    public static void main(String[] args) throws Throwable {
+        Random rnd = new Random();
+        for (int i = 1; i < 100; i++) {
+            int members = rnd.nextInt(10) + 1;
+
+            ByteArrayOutputStream srcBAOS = new ByteArrayOutputStream();
+            ByteArrayOutputStream dstBAOS = new ByteArrayOutputStream();
+            for (int j = 0; j < members; j++) {
+                byte[] src = new byte[rnd.nextInt(8192) + 1];
+                rnd.nextBytes(src);
+                srcBAOS.write(src);
+
+                try (GZIPOutputStream gzos = new GZIPOutputStream(dstBAOS)) {
+                    gzos.write(src);
+                }
+            }
+            byte[] srcBytes = srcBAOS.toByteArray();
+            byte[] dstBytes = dstBAOS.toByteArray();
+            // try different size of buffer to read the
+            // GZIPInputStream
+            /* just for fun when running manually
+            for (int j = 1; j < 10; j++) {
+                test(srcBytes, dstBytes, j);
+            }
+            */
+            for (int j = 0; j < 10; j++) {
+                int readBufSZ = rnd.nextInt(2048) + 1;
+                test(srcBytes,
+                     dstBytes,
+                     readBufSZ,
+                     512);    // the defualt buffer size
+                test(srcBytes,
+                     dstBytes,
+                     readBufSZ,
+                     rnd.nextInt(4096) + 1);
+            }
+        }
+    }
+
+    private static void test(byte[] src, byte[] dst,
+                             int readBufSize, int gzisBufSize)
+        throws Throwable
+    {
+        try (ByteArrayInputStream bais = new ByteArrayInputStream(dst);
+             GZIPInputStream gzis = new GZIPInputStream(bais, gzisBufSize))
+        {
+            byte[] result = new byte[src.length + 10];
+            byte[] buf = new byte[readBufSize];
+            int n = 0;
+            int off = 0;
+
+            while ((n = gzis.read(buf, 0, buf.length)) != -1) {
+                System.arraycopy(buf, 0, result, off, n);
+                off += n;
+                // no range check, if overflow, let it fail
+            }
+            if (off != src.length || gzis.available() != 0 ||
+                !Arrays.equals(src, Arrays.copyOf(result, off))) {
+                throw new RuntimeException(
+                    "GZIPInputStream reading failed! " +
+                    ", src.len=" + src.length +
+                    ", read=" + off);
+            }
+        }
+    }
+}