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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/nio/channels/SocketChannel/Connect.java
+++ b/test/jdk/java/nio/channels/SocketChannel/Connect.java
@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2002, 2018, 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.
+ */
+
+/* @test
+ * @bug 4650679 8037360
+ * @summary Unit test for socket channels
+ * @library .. /test/lib
+ * @build jdk.test.lib.Utils TestServers
+ * @run main Connect
+ */
+
+import java.net.*;
+import java.nio.*;
+import java.nio.channels.*;
+import java.util.*;
+
+public class Connect {
+
+    private static final long INCREMENTAL_DELAY = 30L * 1000L;
+
+    public static void main(String args[]) throws Exception {
+        try (TestServers.EchoServer echoServer
+                = TestServers.EchoServer.startNewServer(1000)) {
+            test1(echoServer);
+        }
+        try {
+            test1(TestServers.RefusingServer.newRefusingServer());
+            throw new Exception("Refused connection throws no exception");
+        } catch (ConnectException ce) {
+            // Correct result
+        }
+    }
+
+    static void test1(TestServers.AbstractServer server) throws Exception {
+        Selector selector;
+        SocketChannel sc;
+        SelectionKey sk;
+        InetSocketAddress isa = new InetSocketAddress(
+            server.getAddress(), server.getPort());
+        sc = SocketChannel.open();
+        sc.configureBlocking(false);
+
+        selector = Selector.open();
+        sk = sc.register(selector, SelectionKey.OP_CONNECT);
+        if (sc.connect(isa)) {
+            System.err.println("Connected immediately!");
+            sc.close();
+            selector.close();
+            return;
+        } else {
+            ByteBuffer buf = ByteBuffer.allocateDirect(100);
+            buf.asCharBuffer().put(new String(
+                "The quick brown fox jumped over the lazy dog."
+                ).toCharArray());
+            buf.flip();
+            long startTime = System.currentTimeMillis();
+            while(true) {
+                selector.select(INCREMENTAL_DELAY);
+                Set selectedKeys = selector.selectedKeys();
+
+                if(selectedKeys.isEmpty()) {
+                    System.err.println("Elapsed time without response: " +
+                                       (System.currentTimeMillis() -
+                                        startTime) / 1000L + " seconds.");
+                }
+                else if(!selectedKeys.contains(sk))
+                {
+                    System.err.println("Got wrong event about selection key.");
+                } else {
+                    System.err.println("Got event for our selection key.");
+                    if(sk.isConnectable()) {
+                        if(sc.finishConnect()) {
+                            if(sc.isConnected()) {
+                                System.err.println("Successful connect.");
+                                sk.interestOps(SelectionKey.OP_WRITE);
+                                sc.write(buf);
+                            } else {
+                                System.err.println(
+                                      "Finish connect completed incorrectly.");
+                            }
+                        } else {
+                            System.err.println(
+                     "key incorrectly indicated socket channel connectable.");
+                        }
+                    }
+                    if(sk.isWritable() && (buf.remaining() > 0)) {
+                        sc.write(buf);
+                    }
+                    if(buf.remaining() == 0) {
+                        System.err.println(
+                            "SUCCESS! buffer contents were sent.");
+                        sc.close();
+                        selector.close();
+                        return;
+                    }
+                }
+                selectedKeys.clear();
+            }
+        }
+    }
+}