AT&T 2.0.19 Code drop, stage 2

[aaf/authz.git] / cadi / core / src / main / java / org / onap / aaf / cadi / filter / AUTHZServlet.java

diff --git a/cadi/core/src/main/java/org/onap/aaf/cadi/filter/AUTHZServlet.java b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/AUTHZServlet.java
new file mode 100644 (file)
index 0000000..f7c4b7f
--- /dev/null
+++ b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/AUTHZServlet.java
@@ -0,0 +1,100 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * Licensed 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.
+ * ============LICENSE_END====================================================
+ *
+ */
+
+package org.onap.aaf.cadi.filter;
+
+import java.io.IOException;
+
+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;
+
+/**
+ * 
+ * @author Jonathan
+ *
+ */
+public class AUTHZServlet<S extends Servlet> implements Servlet {
+       private String[] roles;
+       private Servlet delegate;
+
+       protected AUTHZServlet(Class<S> cls) {
+               try {
+                       delegate = cls.newInstance();
+               } catch (Exception e) {
+                       delegate = null;
+               }
+               RolesAllowed rolesAllowed = cls.getAnnotation(RolesAllowed.class);
+               if(rolesAllowed == null) {
+                       roles = null;
+               } else {
+                       roles = rolesAllowed.value();
+               }
+       }
+       
+       public void init(ServletConfig sc) throws ServletException {
+               if(delegate == null) throw new ServletException("Invalid Servlet Delegate");
+               delegate.init(sc);
+       }
+       
+       public ServletConfig getServletConfig() {
+               return delegate.getServletConfig();
+       }
+
+       public String getServletInfo() {
+               return delegate.getServletInfo();
+       }
+
+       public void service(ServletRequest req, ServletResponse resp) throws ServletException, IOException {
+               if(roles==null) {
+                       delegate.service(req,resp);
+               } else { // Validate
+                       try {
+                               HttpServletRequest hreq = (HttpServletRequest)req;
+                               boolean proceed = false;
+                               for(String role : roles) {
+                                       if(hreq.isUserInRole(role)) {
+                                               proceed = true;
+                                               break;
+                                       }
+                               }
+                               if(proceed) {
+                                       delegate.service(req,resp);
+                               } else {
+                                       //baseRequest.getServletContext().log(hreq.getUserPrincipal().getName()+" Refused " + roles);
+                                       ((HttpServletResponse)resp).sendError(403); // forbidden
+                               }
+                       } catch(ClassCastException e) {
+                               throw new ServletException("JASPIServlet only supports HTTPServletRequest/HttpServletResponse");
+                       }
+               }
+       }
+
+       public void destroy() {
+               delegate.destroy();
+       }
+
+
+}