1 files changed, 117 insertions, 0 deletions
diff --git a/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/restAuth/PDPAuthenticationFilter.java b/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/restAuth/PDPAuthenticationFilter.java
new file mode 100644
index 000000000..5b01ca9e5
--- /dev/null
+++ b/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/restAuth/PDPAuthenticationFilter.java
@@ -0,0 +1,117 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PDP-REST
+ * ================================================================================
+ * Copyright (C) 2017 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.policy.pdp.rest.restAuth;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.onap.policy.pdp.rest.config.PDPApiAuth;
+
+/**
+ * Servlet Filter implementation class PDPAuthenticationFilter
+ */
+@WebFilter("/*")
+public class PDPAuthenticationFilter implements Filter {
+
+	public static final String AUTHENTICATION_HEADER = "Authorization";
+	public static final String ENVIRONMENT_HEADER = "Environment";
+
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response,
+			FilterChain filter) throws IOException, ServletException {
+		if (request instanceof HttpServletRequest) {
+			HttpServletRequest httpServletRequest = (HttpServletRequest) request;
+			String environment = httpServletRequest.getHeader(ENVIRONMENT_HEADER);
+			String authCredentials = httpServletRequest.getHeader(AUTHENTICATION_HEADER);
+			String path = ((HttpServletRequest) request).getRequestURI();
+			// better injected
+			AuthenticationService authenticationService = new AuthenticationService();
+
+			boolean authenticationStatus = authenticationService.authenticate(authCredentials);
+
+			if (authenticationStatus) {
+				if (check(path)) {
+                    // New API request. 
+                    path = path.substring(path.substring(1).indexOf("/") + 1);
+                    if (environment == null) {
+                        // Allow Old clients.
+                        if(!path.contains("/api/")){
+                            request.getRequestDispatcher("/api/" + path).forward(request,response);
+                        }else{
+                            request.getRequestDispatcher(path).forward(request,response);
+                        }
+                    } else if (environment.equalsIgnoreCase(PDPApiAuth.getEnvironment())) {
+                        // Validated new Clients. 
+                        if(!path.contains("/api/")){
+                            request.getRequestDispatcher("/api/" + path).forward(request,response);
+                        }else{
+                            request.getRequestDispatcher(path).forward(request,response);
+                        }
+                    } else if(response instanceof HttpServletResponse) {
+                            HttpServletResponse httpServletResponse = (HttpServletResponse) response;
+                            httpServletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+                    }
+                } else {
+                    filter.doFilter(request, response);
+                }
+            } else if (path.contains("swagger") || path.contains("api-docs")
+                    || path.contains("configuration") || path.contains("count")) {
+                path = path.substring(path.substring(1).indexOf("/") + 2);
+                request.getRequestDispatcher("/api/" + path).forward(request,response);
+            } else if(path.contains("notifications")){
+				filter.doFilter(request, response);
+			} else {
+				if (response instanceof HttpServletResponse) {
+					HttpServletResponse httpServletResponse = (HttpServletResponse) response;
+					httpServletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+				}
+			}
+		}
+	}
+	
+	private boolean check(String path) {
+        if(path.endsWith("/pdp/")|| path.endsWith("/pdp")|| path.endsWith("/test")){
+            return false;
+        }else{
+            return true;
+        }
+    }
+
+	@Override
+	public void destroy() {
+		// Do nothing.
+	}
+
+	@Override
+	public void init(FilterConfig arg0) throws ServletException {
+		// Do nothing.
+	}
+
+}