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/langtools/tools/javac/processing/6350124/HelloWorldAP.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2006, 2021, 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.*;
+import javax.annotation.processing.*;
+import javax.lang.model.element.*;
+import javax.lang.model.type.*;
+import javax.lang.model.util.*;
+
+import java.util.Set;
+
+@SupportedAnnotationTypes({"*"})
+public class HelloWorldAP extends AbstractProcessor {
+    Messager msgr = null;
+    Filer filer = null;
+    boolean DONE=false;
+
+    @Override
+    public void init(ProcessingEnvironment penv) {
+        processingEnv = penv;
+        msgr=penv.getMessager();
+        filer=penv.getFiler();
+    }
+
+    public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv ) {
+        boolean ret = true;
+        if(!renv.processingOver() && !DONE) {
+            msgr.printNote("running process to create HelloWorld.");
+            try (Writer pw = filer.createSourceFile("HelloWorld").openWriter()) {
+                pw.write("public class HelloWorld {\n");
+                pw.write("  public static void main (String argv[]) {\n");
+                pw.write("    System.out.println(\"Hello apt world.\");\n");
+                pw.write("  }\n");
+                pw.write("}\n");
+                pw.flush();
+                pw.close();
+
+                // the easiest way to create a class file is to copy another one
+                try (OutputStream os = filer.createClassFile("HelloWorldAP").openOutputStream();
+                     InputStream is = getClass().getResourceAsStream("HelloWorldAP.class")) {
+                    copy(is, os);
+                }
+                DONE=true;
+            }
+            catch (IOException ioe) {
+                msgr.printError(ioe.getMessage());
+                ret = false;
+            }
+            catch (Exception e) {
+                msgr.printError(e.getMessage());
+                ret = false;
+            }
+        }
+        return ret;
+    }
+
+    void copy(InputStream is, OutputStream os) throws IOException {
+        byte[] buf = new byte[8192];
+        int n;
+        while ((n = is.read(buf, 0, buf.length)) > 0)
+            os.write(buf, 0, n);
+    }
+}