Merging FixingProxies onto release100

Author: Jaroslav Tulach

nbbuild/cluster.properties

@@ -229,7 +229,6 @@ nb.cluster.platform=\
         libs.junit4,\
         libs.junit5,\
         libs.osgi,\
-        libs.rhino,\
         libs.testng,\
         masterfs,\
         masterfs.linux,\

nbbuild/licenses/MPL-2.0

@@ -104,7 +104,9 @@
       which clients are supposed to download and execute in order to find 
       out which proxy to use. This is known as <a href="https://en.wikipedia.org/wiki/Proxy_auto-config">Proxy Auto-Config</a>
       (or PAC). This module provides a pluggable PAC evaluation environment
-      based on Rhino. Execution of the downloaded JavaScript code is sandboxed.
+      based on Nashorn. However, it will gracefully degrade to any other JavaScript
+      which may be installed in the JVM. Execution of the downloaded
+      JavaScript code is sandboxed. (only true for Nashorn)
   </p>
   <p>
       If you don't like the PAC evaluation environment provided
@@ -730,6 +732,14 @@
         </question>
 -->
  <answer id="exec-reflection">
+  <p>
+   Yes. It detects the presence of Nashorn (as opposed to say Rhino) by way 
+      of reflection. In particular it needs to know if the Java version is
+      Java 8u40 as Nashorn was greatly enhanced in that update and was more
+      or less useless (for our purpose) before this time. The use of reflection
+      means the code will gracefully 'degrade' to whatever script engine is
+      available if we are not on Java 8u40 or later.
+  </p>
   <p>
    For testing only a dirty hack is used in our <code>FakeDns</code> class.
    This installs itself as a preferred name service in Java. This is done

platform/core.network/arch.xml

@@ -61,15 +61,6 @@
                         <specification-version>1.16</specification-version>
                     </run-dependency>
                 </dependency>
-                <dependency>
-                    <code-name-base>org.netbeans.libs.rhino</code-name-base>
-                    <build-prerequisite/>
-                    <compile-dependency/>
-                    <run-dependency>
-                        <release-version>1</release-version>
-                        <specification-version>1.7.10</specification-version>
-                    </run-dependency>
-                </dependency>
                 <dependency>
                     <code-name-base>org.netbeans.modules.keyring</code-name-base>
                     <build-prerequisite/>

platform/core.network/nbproject/project.xml

@@ -25,6 +25,7 @@
 import java.util.*;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import org.netbeans.core.NbLifecycleManager;
 import org.netbeans.core.network.proxy.pac.PacParsingException;
 import org.netbeans.core.network.proxy.pac.PacScriptEvaluator;
 import org.netbeans.core.network.proxy.pac.PacScriptEvaluatorFactory;
@@ -77,6 +78,7 @@ private ProxyAutoConfig(final String pacURL) throws URISyntaxException {
 
             @Override
             public void run() {
+                NbLifecycleManager.advancePolicy();
                 initEngine();
             }
         });

platform/core.network/src/org/netbeans/core/network/proxy/ProxyAutoConfig.java

@@ -260,7 +260,7 @@ private static int getMonth(String month) throws PacDateTimeInputException {
 
 
     private static int getInteger(Object obj) throws PacDateTimeInputException {
-        if (obj instanceof Number) {
+        if (obj instanceof Integer || obj instanceof Long) {
             return ((Number) obj).intValue();
         }
         if (obj instanceof String) {
@@ -320,9 +320,8 @@ private static Calendar getCalendar(Date now, boolean useGMT) {
      * {@link PacHelperMethodsNetscape#weekdayRange(java.lang.Object...) weekdayRange()}
      * 
      * <p>
-     * Note: In Rhino, JavaScript function arguments that are not used in the
-     * call will have a type of {@code java.lang.String} and the value will be
-     * 'undefined'.
+     * Note: In Nashorn, JavaScript function arguments that are not used in the
+     * call will have a type of {@code Undefined}.
      *
      * @param objs
      * @return 
@@ -338,8 +337,7 @@ public static int getNoOfParams(Object... objs) {
             }
             // Only parameters of type CharSequence (String) and 
             // Number (Integer, Long, etc) are relevant.
-            // Rhino converts javascript undefined to the string "undefined"
-            if ((obj instanceof Number) || (obj instanceof CharSequence && (! "undefined".equals(obj)))) {
+            if ((obj instanceof Number) || (obj instanceof CharSequence)) {
                 params++;
             }
         }
@@ -353,9 +351,6 @@ public static int getNoOfParams(Object... objs) {
      */
     public static boolean usesGMT(Object... args) {
         int params = getNoOfParams(args);
-        if(params == 0) {
-            return false;
-        }
         if (args[params - 1] instanceof CharSequence) {
             String p = args[params - 1].toString();
             if (p.equals("GMT")) {

platform/core.network/src/org/netbeans/core/network/proxy/pac/datetime/PacUtilsDateTime.java

@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.netbeans.core.network.proxy.pac.impl;
+
+import jdk.nashorn.api.scripting.ClassFilter;
+import org.netbeans.core.network.proxy.pac.PacHelperMethods;
+
+/**
+ * Nashorn class filter which helps us create a sandboxed JavaScript execution
+ * environment which only has access to the Helper methods, nothing more.
+ * 
+ * <p>Note that the ClassFilter feature is specific to Nashorn (Rhino had the
+ * {@code ClassShutter} class for this purpose), but the feature did not appear 
+ * until Java 8u40.
+ * 
+ * @author lbruun
+ */
+class ClassFilterPacHelpers implements ClassFilter {
+
+    @Override
+    public boolean exposeToScripts(String string) {
+        // The only Java class the PAC script is allowed to
+        // make use of is the PAC Helpers, nothing more. 
+        return string.equals(PacHelperMethods.class.getName());
+    }
+}

platform/core.network/src/org/netbeans/core/network/proxy/pac/impl/ClassFilterPacHelpers.java

@@ -63,31 +63,27 @@ private HelperScriptFactory() {
     /**
      * Gets JavaScript source with PAC Helper function declarations.
      * 
-     * @param bridgeObjectName name of Java object which contains Java methods, 
-     *   named similarly to the JavaScript PAC helper functions and with 
-     *   similar arg list. This Java object acts as the bridge between the 
-     *   JavaScript world and the Java world and must be an instance 
-     *   of {@link org.netbeans.network.proxy.pac.PacHelperMethods PacHelperMethods}.
-     * 
-     * @return JavaScript source code
+     * @return JavaScript source code that returns a function that delegates
+     *   to its first argument
      */
-    public static String getPacHelperSource(String bridgeObjectName) {
+    public static String getPacHelperSource() {
         StringBuilder sb = new StringBuilder(2000);
-        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_NS, bridgeObjectName);
-        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_MS, bridgeObjectName);
-        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_DEBUG, bridgeObjectName);
+        sb.append("(function(self) {\n");
+        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_NS);
+        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_MS);
+        addFunctionDecls(sb, JS_HELPER_FUNCTIONS_DEBUG);
+        sb.append("})\n");
         return sb.toString();
     }
 
 
-    private static void addFunctionDecls(StringBuilder sb, JsHelperFunction[] jsHelperFunctions, String bridgeObjectName) {
+    private static void addFunctionDecls(StringBuilder sb, JsHelperFunction[] jsHelperFunctions) {
         for (JsHelperFunction f : jsHelperFunctions) {
-            sb.append("function ");
+            sb.append("this['");
             sb.append(f.functionName);
-            sb.append('(');
+            sb.append("'] = function(");
             addArgList(sb, f.argList);
-            sb.append(") {");
-            sb.append('\n');
+            sb.append(") {\n");
             sb.append("    return ");
             boolean encloseReturnValue = false;
             if (Number.class.isAssignableFrom(f.getClass())) {
@@ -98,8 +94,7 @@ private static void addFunctionDecls(StringBuilder sb, JsHelperFunction[] jsHelp
                 encloseReturnValue = true;
                 sb.append("String(");
             }
-            sb.append(bridgeObjectName);
-            sb.append('.');
+            sb.append("self.");
             sb.append(f.functionName);
             sb.append('(');
             addArgList(sb, f.argList);