From 2f5c368124e20322f06738a437c0e141aac0d38b Mon Sep 17 00:00:00 2001
From: hns <hannesw@gmail.com>
Date: Wed, 18 Jun 2003 16:11:02 +0000
Subject: [PATCH] Added Remote (XML-RPC client) object. Fixes in XML-RPC
 argument encoding.

---
 src/helma/scripting/rhino/RhinoCore.java    |  15 +-
 src/helma/scripting/rhino/RhinoEngine.java  |   2 +-
 src/helma/scripting/rhino/XmlRpcObject.java | 155 ++++++++++++++++++++
 3 files changed, 168 insertions(+), 4 deletions(-)
 create mode 100644 src/helma/scripting/rhino/XmlRpcObject.java

diff --git a/src/helma/scripting/rhino/RhinoCore.java b/src/helma/scripting/rhino/RhinoCore.java
index bb93ffb9..0b146d5a 100644
--- a/src/helma/scripting/rhino/RhinoCore.java
+++ b/src/helma/scripting/rhino/RhinoCore.java
@@ -84,6 +84,7 @@ public final class RhinoCore {
             ScriptableObject.defineClass(global, FileObject.class);
             ScriptableObject.defineClass(global, FtpObject.class);
             ImageObject.init(global);
+            XmlRpcObject.init(global);
             MailObject.init(global, app.getProperties());
             putPrototype("hopobject",
                          ScriptableObject.getClassPrototype(global, "HopObject"));
@@ -378,15 +379,23 @@ public final class RhinoCore {
      *  representation.
      */
 
-    public Object processXmlRpcArgument (Object what, Context cx) throws Exception {
+    public Object processXmlRpcArgument (Object what) throws Exception {
         if (what == null)
             return null;
         if (what instanceof Vector) {
             Vector v = (Vector) what;
-            return Context.toObject(v.toArray(), global);
+            Object[] a = v.toArray();
+            for (int i=0; i<a.length; i++) {
+                a[i] = processXmlRpcArgument(a[i]);
+            }
+            return Context.toObject(a, global);
         }
         if (what instanceof Hashtable) {
             Hashtable t = (Hashtable) what;
+            for (Enumeration e=t.keys(); e.hasMoreElements(); ) {
+                Object key = e.nextElement();
+                t.put(key, processXmlRpcArgument(t.get(key)));
+            }
             return Context.toObject(new SystemMap(t), global);
         }
         if (what instanceof String)
@@ -398,7 +407,7 @@ public final class RhinoCore {
         if (what instanceof Date) {
             Date d = (Date) what;
             Object[] args = { new Long(d.getTime()) };
-            return cx.newObject(global, "Date", args);
+            return Context.getCurrentContext().newObject(global, "Date", args);
         }
         return Context.toObject(what, global);
     }
diff --git a/src/helma/scripting/rhino/RhinoEngine.java b/src/helma/scripting/rhino/RhinoEngine.java
index 106a2bc6..3a9b2fc4 100644
--- a/src/helma/scripting/rhino/RhinoEngine.java
+++ b/src/helma/scripting/rhino/RhinoEngine.java
@@ -288,7 +288,7 @@ public final class RhinoEngine implements ScriptingEngine {
                        esv[i] = ESLoader.normalizeValue (args[i], evaluator); */
                 // XML-RPC requires special argument conversion
                 if (xmlrpc) {
-                    args[i] = core.processXmlRpcArgument (args[i], Context.getCurrentContext());
+                    args[i] = core.processXmlRpcArgument (args[i]);
                 } else {
                     args[i] = context.toObject(args[i], global);
                 }
diff --git a/src/helma/scripting/rhino/XmlRpcObject.java b/src/helma/scripting/rhino/XmlRpcObject.java
new file mode 100644
index 00000000..cbb69972
--- /dev/null
+++ b/src/helma/scripting/rhino/XmlRpcObject.java
@@ -0,0 +1,155 @@
+/*
+ * Helma License Notice
+ *
+ * The contents of this file are subject to the Helma License
+ * Version 2.0 (the "License"). You may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://adele.helma.org/download/helma/license.txt
+ *
+ * Copyright 1998-2003 Helma Software. All Rights Reserved.
+ *
+ * $RCSfile$
+ * $Author$
+ * $Revision$
+ * $Date$
+ */
+
+package helma.scripting.rhino;
+
+import org.mozilla.javascript.*;
+import org.apache.xmlrpc.*;
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+
+/**
+ * An extension to transparently call and serve XML-RPC from Rhino.
+ * The extension adds constructors for XML-RPC clients and servers to the Global Object.
+ *
+ * All argument conversion is done automatically. Currently the following argument and return
+ * types are supported:
+ * <ul>
+ * <li> plain objects (with all properties returned by ESObject.getProperties ())
+ * <li> arrays
+ * <li> strings
+ * <li> date objects
+ * <li> booleans
+ * <li> integer and float numbers (long values are not supported!)
+ * </ul>
+ *
+ */
+public class XmlRpcObject extends BaseFunction {
+
+    String url = null;
+    String method = null;
+
+    XmlRpcObject(String url) {
+        this.url = url;
+        this.method = null;
+    }
+
+    XmlRpcObject(String url, String method) {
+        this.url = url;
+        this.method = method;
+    }
+
+        /**
+     *  This method is used as HopObject constructor from JavaScript.
+     */
+    public static Object xmlrpcObjectConstructor(Context cx, Object[] args,
+                                              Function ctorObj, boolean inNewExpr) {
+        if (args.length == 0 || args.length > 2) {
+            throw new IllegalArgumentException("Wrong number of arguments in constructor for XML-RPC client");
+        }
+        if (args.length == 1) {
+            String url = args[0].toString();
+            return new XmlRpcObject(url);
+        } else {
+            String url = args[0].toString();
+            String method = args[1].toString();
+            return new XmlRpcObject(url, method);
+        }
+
+    }
+
+    /**
+     * Called by the evaluator after the extension is loaded.
+     */
+    public static void init(Scriptable scope) {
+        Method[] methods = XmlRpcObject.class.getDeclaredMethods();
+        Member ctorMember = null;
+        for (int i=0; i<methods.length; i++) {
+            if ("xmlrpcObjectConstructor".equals(methods[i].getName())) {
+                ctorMember = methods[i];
+                break;
+            }
+        }
+        FunctionObject ctor = new FunctionObject("Remote", ctorMember, scope);
+        ((ScriptableObject)scope).defineProperty(scope, "Remote", ctor, ScriptableObject.DONTENUM);
+        // ctor.addAsConstructor(scope, proto);
+    }
+
+
+    public Object get(String name, Scriptable start) {
+        String m = method == null ? name : method+"."+name;
+        return new XmlRpcObject(url, m);
+    }
+
+    public Object call(Context cx,
+                             Scriptable scope,
+                             Scriptable thisObj,
+                             Object[] args)
+                      throws JavaScriptException {
+
+        if (method == null) {
+            throw new JavaScriptException("Invalid method name");
+        }
+
+        try {
+            RhinoEngine engine = (RhinoEngine) cx.getThreadLocal("engine");
+            RhinoCore c = engine.core;
+            XmlRpcClient client = new XmlRpcClient(url);
+
+            // long now = System.currentTimeMillis ();
+            Object retval = null;
+            int l = args.length;
+            Vector v = new Vector();
+
+            for (int i = 0; i < l; i++) {
+                Object arg = c.processXmlRpcResponse(args[i]);
+                v.addElement(arg);
+            }
+
+            retval = client.execute(method, v);
+
+            return c.processXmlRpcArgument(retval);
+
+        } catch (Exception x) {
+            String msg = x.getMessage();
+
+            if ((msg == null) || (msg.length() == 0)) {
+                msg = x.toString();
+            }
+            throw new JavaScriptException(msg);
+        }
+
+    }
+
+    public String getClassName() {
+        return "Remote";
+    }
+
+    public String toString() {
+        return "[Remote "+url+"]";
+    }
+
+    public Object getDefaultValue(Class hint) {
+        if (hint == null || hint == String.class) {
+            return toString();
+        }
+        return super.getDefaultValue(hint);
+    }
+
+}