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/*-
* ============LICENSE_START=======================================================
* ONAP-PDP-REST
* ================================================================================
* Copyright (C) 2017,2019 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;
/**
* Servlet Filter implementation class PdpAuthenticationFilter.
*/
@WebFilter("/*")
public class PdpAuthenticationFilter implements Filter {
private static final String APISTR = "/api/";
public static final String AUTHENTICATION_HEADER = "Authorization";
public static final String ENVIRONMENT_HEADER = "Environment";
public static final String CLIENTAUTH_HEADER = "ClientAuth";
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filter)
throws IOException, ServletException {
if (!(request instanceof HttpServletRequest)) {
return;
}
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
String environment = httpServletRequest.getHeader(ENVIRONMENT_HEADER);
String authHeader = httpServletRequest.getHeader(AUTHENTICATION_HEADER);
String clientAuthHeader = httpServletRequest.getHeader(CLIENTAUTH_HEADER);
String path = ((HttpServletRequest) request).getRequestURI();
String resource = path.substring(path.lastIndexOf('/') + 1);
boolean authenticationStatus =
AuthenticationService.checkPermissions(clientAuthHeader, authHeader, resource, environment, request);
if (authenticationStatus) {
if (check(path)) {
path = path.substring(path.indexOf('/', 1));
if (!path.contains(APISTR)) {
request.getRequestDispatcher(APISTR + path).forward(request, response);
} else {
request.getRequestDispatcher(path).forward(request, response);
}
} else {
filter.doFilter(request, response);
}
} else if (path.contains("swagger") || path.contains("api-docs") || path.contains("configuration")
|| path.contains("count")) {
path = path.substring(path.indexOf('/', 1) + 1);
request.getRequestDispatcher(APISTR + 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) {
return !(path.endsWith("/pdp/") || path.endsWith("/pdp") || path.endsWith("/test"));
}
@Override
public void destroy() {
// Do nothing.
}
@Override
public void init(FilterConfig arg0) throws ServletException {
// Do nothing.
}
}
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