Port to java 17

[ccsdk/apps.git] / cadi / core / src / main / java / org / onap / ccsdk / apps / cadi / filter / AUTHZServlet.java

diff --git a/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/filter/AUTHZServlet.java b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/filter/AUTHZServlet.java
new file mode 100644 (file)
index 0000000..952c11e
--- /dev/null
+++ b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/filter/AUTHZServlet.java
@@ -0,0 +1,98 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.ccsdk
+ * ===========================================================================
+ * Copyright (c) 2023 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.ccsdk.apps.cadi.filter;
+
+import java.io.IOException;
+
+import jakarta.servlet.Servlet;
+import jakarta.servlet.ServletConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.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);
+            return;
+        }
+
+        // Validate
+        try {
+            HttpServletRequest hreq = (HttpServletRequest)req;
+            for (String role : roles) {
+                if (hreq.isUserInRole(role)) {
+                    delegate.service(req, resp);
+                    return;
+                }
+            }
+
+            ((HttpServletResponse)resp).sendError(403); // forbidden
+        } catch (ClassCastException e) {
+            throw new ServletException("JASPIServlet only supports HTTPServletRequest/HttpServletResponse");
+        }
+    }
+
+    public void destroy() {
+        delegate.destroy();
+    }
+
+}