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/*-
* ============LICENSE_START=======================================================
* ONAP SDC
* ================================================================================
* Copyright (C) 2019 Samsung. 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.openecomp.sdc.be.filters;
import fj.data.Either;
import java.io.IOException;
import java.util.Base64;
import java.util.List;
import java.util.Optional;
import java.util.StringTokenizer;
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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.model.User;
import org.openecomp.sdc.be.user.UserBusinessLogic;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.exception.ResponseFormat;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.ContextLoader;
public class RestAuthenticationFilter implements Filter {
private static final Logger log = Logger.getLogger(RestAuthenticationFilter.class);
private UserBusinessLogic userBusinessLogic = getUserBusinessLogic();
private UserBusinessLogic getUserBusinessLogic() {
ApplicationContext ctx = ContextLoader.getCurrentWebApplicationContext();
return (UserBusinessLogic) ctx.getBean("userBusinessLogic");
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filter)
throws IOException, ServletException {
if (request instanceof HttpServletRequest) {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
String authHeader = httpServletRequest.getHeader(Constants.AUTHORIZATION_HEADER);
if (authHeader != null) {
boolean authenticationStatus = authenticate(authHeader);
if (authenticationStatus) {
filter.doFilter(request, response);
} else {
unauthorized(response);
}
} else {
unauthorized(response);
}
}
}
private void unauthorized(ServletResponse response) {
if (response instanceof HttpServletResponse) {
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
httpServletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
}
}
private boolean authenticate(String authCredentials) {
if (null == authCredentials) {
return false;
}
final String encodedUserPassword = authCredentials.replaceFirst("Basic" + " ", "");
String usernameAndPassword = null;
try {
byte[] decodedBytes = Base64.getDecoder().decode(encodedUserPassword);
usernameAndPassword = new String(decodedBytes, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
}
final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":");
final String username = tokenizer.nextToken();
try {
Either<List<User>, ResponseFormat> either = userBusinessLogic.getAllAdminUsers();
if (either.isRight()) {
return false;
} else {
if (either.left().value() != null) {
List<User> users = either.left().value();
Optional<User> user = users.stream().filter(x -> x.getUserId().equals(username)).findFirst();
return user.isPresent();
} else {
return false;
}
}
} catch (Exception e) {
BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Get All Administrators");
log.debug("get all admins failed with unexpected error: {}", e);
}
return false;
}
@Override
public void destroy() {
}
@Override
public void init(FilterConfig arg0) throws ServletException {
}
}
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