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.

test/jdk/java/io/Writer/Append.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2004, 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 5030623
+ * @summary Basic test of all append() methods in Writer and inherited classes.
+ */
+
+import java.io.*;
+import java.lang.reflect.*;
+
+public class Append {
+    // append methods throw IOException
+    private static Class [] io = {
+        Writer.class, BufferedWriter.class, FilterWriter.class,
+        OutputStreamWriter.class, FileWriter.class
+    };
+
+    // append methods don't throw IOException
+    private static Class [] nio = {
+        CharArrayWriter.class, StringWriter.class, PrintWriter.class,
+        PrintStream.class
+    };
+
+    public static void main(String [] args) {
+        for (int i = 0; i < io.length; i++)
+            test(io[i], true);
+        for (int i = 0; i < nio.length; i++)
+            test(nio[i], false);
+    }
+
+    private static void test(Class c, boolean io) {
+        try {
+            Class [] cparams = { char.class };
+            test(c.getMethod("append", cparams), io);
+            Class [] csparams = { CharSequence.class };
+            test(c.getMethod("append", csparams), io);
+        } catch (NoSuchMethodException x) {
+            throw new RuntimeException("No append method found");
+        }
+    }
+
+    private static void test(Method m, boolean io) {
+        Class [] ca = m.getExceptionTypes();
+        boolean found = false;
+        for (int i = 0; i < ca.length; i++) {
+            if (ca[i].equals(IOException.class)) {
+                found = true;
+                break;
+            }
+        }
+
+        if (found && !io)
+            throw new RuntimeException("Unexpected IOException");
+        if (!found && io)
+            throw new RuntimeException("Missing IOException");
+    }
+}