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/runtimeImage/JImageHelper.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2023, Red Hat, Inc.
+ * 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.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import jdk.internal.jimage.BasicImageReader;
+import jdk.internal.jimage.ImageLocation;
+
+/**
+ *
+ * JDK Modular image iterator
+ */
+public class JImageHelper {
+
+    private JImageHelper() {
+        // Don't instantiate
+    }
+
+    public static List<String> listContents(Path jimage) throws IOException {
+        try(BasicImageReader reader = BasicImageReader.open(jimage)) {
+            List<String> entries = new ArrayList<>();
+            for (String s : reader.getEntryNames()) {
+                entries.add(s);
+            }
+            Collections.sort(entries);
+            return entries;
+        }
+    }
+
+    public static byte[] getLocationBytes(String location, Path jimage) throws IOException {
+        try(BasicImageReader reader = BasicImageReader.open(jimage)) {
+            ImageLocation il = reader.findLocation(location);
+            byte[] r = reader.getResource(il);
+            if (r == null) {
+                throw new IllegalStateException(String.format("bytes for %s not found!", location));
+            }
+            return r;
+        }
+    }
+}