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/tools/jlink/plugins/SystemModuleDescriptors/ModuleTargetHelper.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017, 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.InputStream;
+import java.io.IOException;
+import java.lang.module.ModuleReader;
+import java.lang.module.ModuleReference;
+import java.net.URI;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import jdk.internal.module.ModuleInfo;
+import jdk.internal.module.ModuleInfo.Attributes;
+
+public class ModuleTargetHelper {
+    private ModuleTargetHelper() {}
+
+    public static final class ModuleTarget {
+        private String targetPlatform;
+
+        public ModuleTarget(String targetPlatform) {
+            this.targetPlatform = targetPlatform;
+        }
+
+        public String targetPlatform() {
+            return targetPlatform;
+        }
+    }
+
+    public static ModuleTarget getJavaBaseTarget() throws IOException {
+        Path p = Paths.get(URI.create("jrt:/java.base/module-info.class"));
+        try (InputStream in = Files.newInputStream(p)) {
+            return read(in);
+        }
+    }
+
+    public static ModuleTarget read(InputStream in) throws IOException {
+        ModuleInfo.Attributes attrs = ModuleInfo.read(in, null);
+        if (attrs.target() != null) {
+            return new ModuleTarget(attrs.target().targetPlatform());
+        } else {
+            return null;
+        }
+    }
+
+    public static ModuleTarget read(ModuleReference modRef) throws IOException {
+        ModuleReader reader = modRef.open();
+        try (InputStream in = reader.open("module-info.class").get()) {
+            return read(in);
+        } finally {
+            reader.close();
+        }
+    }
+}