1 files changed, 136 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPServiceListenerServlet.java b/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPServiceListenerServlet.java
new file mode 100644
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+++ b/sca-java-1.x/branches/sca-java-1.6.2/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPServiceListenerServlet.java
@@ -0,0 +1,136 @@
+/*
+ * 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.apache.tuscany.sca.binding.http.provider;
+
+import java.io.IOException;
+import java.util.List;
+
+import javax.servlet.Servlet;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.policy.Intent;
+import org.apache.tuscany.sca.policy.PolicySet;
+import org.apache.tuscany.sca.policy.PolicySetAttachPoint;
+import org.apache.tuscany.sca.policy.authentication.basic.BasicAuthenticationPolicy;
+
+/**
+ * Servlet responsible for dispatching HTTP service requests to the
+ * target component implementation.
+ *
+ * @version $Rev$ $Date$
+ */
+public class HTTPServiceListenerServlet implements Servlet {
+    private static final QName AUTEHTICATION_INTENT = new QName("http://www.osoa.org/xmlns/sca/1.0","authentication");
+    
+    transient private Binding binding;
+    transient private ServletConfig config;
+    transient private MessageFactory messageFactory;
+    transient private Invoker serviceInvoker;
+    
+    transient private boolean requiresAuthentication = false;
+    transient private BasicAuthenticationPolicy basicAuthenticationPolicy = null;
+
+    /**
+     * Constructs a new HTTPServiceListenerServlet.
+     */
+    public HTTPServiceListenerServlet(Binding binding, Invoker serviceInvoker, MessageFactory messageFactory) {
+        this.binding = binding;
+        this.serviceInvoker = serviceInvoker;
+        this.messageFactory = messageFactory;
+        
+        // find out which policies are active
+        if (binding instanceof PolicySetAttachPoint) {
+            List<Intent> intents = ((PolicySetAttachPoint)binding).getRequiredIntents();
+            for(Intent intent : intents) {
+                if(intent.getName().equals(AUTEHTICATION_INTENT)) {
+                    requiresAuthentication = true;
+                }
+            }
+
+
+            List<PolicySet> policySets = ((PolicySetAttachPoint)binding).getApplicablePolicySets();
+            for (PolicySet ps : policySets) {
+                for (Object p : ps.getPolicies()) {
+                    if (BasicAuthenticationPolicy.class.isInstance(p)) {
+                        basicAuthenticationPolicy = (BasicAuthenticationPolicy)p;
+                    } else {
+                        // etc. check for other types of policy being present
+                    }
+                }
+            }
+        }        
+    }
+
+    public ServletConfig getServletConfig() {
+        return config;
+    }
+
+    public String getServletInfo() {
+        return "";
+    }
+
+    public void init(ServletConfig config) throws ServletException {
+        this.config = config;
+    }
+
+    public void destroy() {
+        
+    }
+
+    public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
+        
+        if(requiresAuthentication) {
+            if(! hasAuthenticationHeader((HttpServletRequest)request, (HttpServletResponse)response)) {
+                ((HttpServletResponse)response).sendError(HttpServletResponse.SC_UNAUTHORIZED);
+            }
+        }
+        
+        // Dispatch the service interaction to the service invoker
+        Message requestMessage = messageFactory.createMessage();
+        requestMessage.setBody(new Object[]{request, response});
+        Message responseMessage = serviceInvoker.invoke(requestMessage);
+        if (responseMessage.isFault()) {            
+            // Turn a fault into an exception
+            //throw new ServletException((Throwable)responseMessage.getBody());
+            Throwable e = (Throwable)responseMessage.getBody();
+            ((HttpServletResponse)response).sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.toString());
+        }
+    }
+
+    
+    private boolean hasAuthenticationHeader(HttpServletRequest request, ServletResponse response) {
+        boolean result = false;
+        if(request.getHeader("Authorization") != null) {
+            result = true;
+        }
+        
+        return result;
+    }
+}