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/*-
* ============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.
}
}
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