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/lang/System/LoggerFinder/internal/backend/SystemClassLoader.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2015, 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.IOException;
+import java.net.URL;
+import java.util.Enumeration;
+import java.lang.System.LoggerFinder;
+
+/**
+ * A custom class loader which can hide the registered LoggerProvider
+ * depending on the value of a test.logger.hidesProvider system property.
+ * @author danielfuchs
+ */
+public class SystemClassLoader extends ClassLoader {
+
+    final public boolean hidesProvider;
+
+    public SystemClassLoader() {
+        hidesProvider = Boolean.getBoolean("test.logger.hidesProvider");
+    }
+    public SystemClassLoader(ClassLoader parent) {
+        super(parent);
+        hidesProvider = Boolean.getBoolean("test.logger.hidesProvider");
+    }
+
+    boolean accept(String name) {
+        final boolean res = !name.endsWith(LoggerFinder.class.getName());
+        if (res == false) {
+            System.out.println("Hiding " + name);
+        }
+        return res;
+    }
+
+    @Override
+    public URL getResource(String name) {
+        if (hidesProvider && !accept(name)) {
+            return null;
+        } else {
+            return super.getResource(name);
+        }
+    }
+
+    class Enumerator implements Enumeration<URL> {
+        final Enumeration<URL> enumeration;
+        volatile URL next;
+        Enumerator(Enumeration<URL> enumeration) {
+            this.enumeration = enumeration;
+        }
+
+        @Override
+        public boolean hasMoreElements() {
+            if (next != null) return true;
+            if (!enumeration.hasMoreElements()) return false;
+            if (hidesProvider == false) return true;
+            next = enumeration.nextElement();
+            if (accept(next.getPath())) return true;
+            next = null;
+            return hasMoreElements();
+        }
+
+        @Override
+        public URL nextElement() {
+            final URL res = next == null ? enumeration.nextElement() : next;
+            next = null;
+            if (hidesProvider == false || accept(res.getPath())) return res;
+            return nextElement();
+        }
+    }
+
+    @Override
+    public Enumeration<URL> getResources(String name) throws IOException {
+        final Enumeration<URL> enumeration = super.getResources(name);
+        return hidesProvider ? new Enumerator(enumeration) : enumeration;
+    }
+
+
+
+}