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/util/zip/ZipFile/DeleteTempJar.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 1999, 2022, 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.
+ */
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.JarURLConnection;
+import java.net.URL;
+
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.util.jar.JarOutputStream;
+
+import com.sun.net.httpserver.*;
+
+
+public class DeleteTempJar
+{
+    public static void realMain(String args[]) throws Exception
+    {
+        final File zf = File.createTempFile("deletetemp", ".jar");
+        zf.deleteOnExit();
+        try (FileOutputStream fos = new FileOutputStream(zf);
+             JarOutputStream jos = new JarOutputStream(fos))
+        {
+            JarEntry je = new JarEntry("entry");
+            jos.putNextEntry(je);
+            jos.write("hello, world".getBytes("ASCII"));
+        }
+
+        HttpServer server = HttpServer.create(
+                new InetSocketAddress((InetAddress) null, 0), 0);
+        HttpContext context = server.createContext("/",
+            new HttpHandler() {
+                public void handle(HttpExchange e) {
+                    try (FileInputStream fis = new FileInputStream(zf)) {
+                        e.sendResponseHeaders(200, zf.length());
+                        OutputStream os = e.getResponseBody();
+                        byte[] buf = new byte[1024];
+                        int count = 0;
+                        while ((count = fis.read(buf)) != -1) {
+                            os.write(buf, 0, count);
+                        }
+                    } catch (Exception ex) {
+                        unexpected(ex);
+                    } finally {
+                        e.close();
+                    }
+                }
+            });
+
+        server.start();
+        try {
+            URL url = new URL("jar:http://localhost:"
+                          + new Integer(server.getAddress().getPort()).toString()
+                          + "/deletetemp.jar!/");
+            JarURLConnection c = (JarURLConnection)url.openConnection();
+            JarFile f = c.getJarFile();
+            check(f.getEntry("entry") != null);
+            System.out.println(f.getName());
+        } finally {
+            server.stop(0);
+        }
+    }
+
+    //--------------------- Infrastructure ---------------------------
+    static volatile int passed = 0, failed = 0;
+    static boolean pass() {passed++; return true;}
+    static boolean fail() {failed++; Thread.dumpStack(); return false;}
+    static boolean fail(String msg) {System.out.println(msg); return fail();}
+    static void unexpected(Throwable t) {failed++; t.printStackTrace();}
+    static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;}
+    static boolean equal(Object x, Object y) {
+        if (x == null ? y == null : x.equals(y)) return pass();
+        else return fail(x + " not equal to " + y);}
+    public static void main(String[] args) throws Throwable {
+        try {realMain(args);} catch (Throwable t) {unexpected(t);}
+        if (failed > 0) throw new AssertionError("Some tests failed");}
+}