catalog-be/src/main/java/org/openecomp/sdc/be/filters/GatewayFilter.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdc.be.filters;
  22
  23 import org.apache.http.HttpStatus;
  24 import org.openecomp.sdc.be.components.impl.exceptions.ByActionStatusComponentException;
  25 import org.openecomp.sdc.be.components.impl.exceptions.ComponentException;
  26 import org.openecomp.sdc.be.config.Configuration;
  27 import org.openecomp.sdc.be.dao.api.ActionStatus;
  28 import org.openecomp.sdc.be.servlets.exception.ComponentExceptionMapper;
  29 import org.openecomp.sdc.common.api.FilterDecisionEnum;
  30 import org.openecomp.sdc.common.log.wrappers.Logger;
  31 import org.openecomp.sdc.common.util.ThreadLocalsHolder;
  32 import org.springframework.beans.factory.annotation.Autowired;
  33 import org.springframework.stereotype.Component;
  34
  35 import javax.servlet.Filter;
  36 import javax.servlet.FilterChain;
  37 import javax.servlet.FilterConfig;
  38 import javax.servlet.ServletException;
  39 import javax.servlet.ServletRequest;
  40 import javax.servlet.ServletResponse;
  41 import javax.servlet.http.Cookie;
  42 import javax.servlet.http.HttpServletRequest;
  43 import javax.servlet.http.HttpServletResponse;
  44 import javax.ws.rs.WebApplicationException;
  45 import javax.ws.rs.core.HttpHeaders;
  46 import java.io.IOException;
  47 import java.util.List;
  48 import java.util.stream.Stream;
  49
  50 @Component("gatewayFilter")
  51 public class GatewayFilter implements Filter {
  52
  53     private Configuration.CookieConfig authCookieConf;
  54     private Configuration config;
  55     private static final Logger log = Logger.getLogger(BeServletFilter.class);
  56
  57     @Autowired
  58     private ThreadLocalUtils threadLocalUtils;
  59     @Autowired
  60     private ComponentExceptionMapper componentExceptionMapper;
  61
  62
  63     public GatewayFilter(org.openecomp.sdc.be.config.Configuration configuration) {
  64         this.authCookieConf = configuration.getAuthCookie();
  65     }
  66
  67     @Override
  68     public void init(FilterConfig filterConfig) throws ServletException {
  69     }
  70
  71     @Override
  72     public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain) throws IOException, ServletException {
  73
  74         HttpServletRequest httpRequest = (HttpServletRequest) req;
  75         HttpServletResponse httpResponse = (HttpServletResponse) res;
  76         try {
  77             if (isUrlFromWhiteList(httpRequest) || isConsumerBusinessLogic()) {
  78                 ThreadLocalsHolder.setApiType(FilterDecisionEnum.NA);
  79                 threadLocalUtils.setUserContextFromDB(httpRequest);
  80                 filterChain.doFilter(httpRequest, res);
  81 //            } else if (isCookieExist(httpRequest, authCookieConf.getCookieName())) {
  82 //                ThreadLocalsHolder.setApiType(FilterDecisionEnum.INTERNAL);
  83 //                filterChain.doFilter(httpRequest, res);
  84 //            } else {
  85 //                validateAuthHeaderExist(httpRequest);
  86 //                ThreadLocalsHolder.setApiType(FilterDecisionEnum.EXTERNAL);
  87 //                filterChain.doFilter(httpRequest, res);
  88             }
  89         } catch (ComponentException ce) {
  90             componentExceptionMapper.writeToResponse(ce, httpResponse);
  91
  92         } catch (WebApplicationException we) {
  93             httpResponse.setStatus(we.getResponse().getStatus());
  94             setDefaultHttpParams(httpResponse);
  95             httpResponse.getWriter().write(we.getMessage());
  96
  97         } catch (Exception ex) {
  98             httpResponse.setStatus(HttpStatus.SC_INTERNAL_SERVER_ERROR);
  99             setDefaultHttpParams(httpResponse);
 100             httpResponse.getWriter().write(ex.getMessage());
 101         }
 102     }
 103
 104     private void setDefaultHttpParams(HttpServletResponse httpResponse) {
 105         httpResponse.setContentType("application/json");
 106         httpResponse.setCharacterEncoding("UTF-8");
 107     }
 108
 109     private boolean isCookieExist(HttpServletRequest httpRequest, String cookieName) {
 110         Cookie[] cookies = httpRequest.getCookies();
 111         if (cookies != null) {
 112             for (Cookie cookie : cookies) {
 113                 if (cookie.getName().equals(cookieName)) {
 114                     return true;
 115                 }
 116             }
 117         }
 118         return false;
 119     }
 120
 121     private boolean isHeaderExist(HttpServletRequest req, String headerName) {
 122         return req.getHeader(headerName) != null;
 123     }
 124
 125     private void validateAuthHeaderExist(HttpServletRequest req) {
 126         boolean authHeader = isHeaderExist(req, HttpHeaders.AUTHORIZATION);
 127         if (!authHeader) throw new ByActionStatusComponentException(ActionStatus.AUTH_FAILED);
 128     }
 129
 130     private boolean isUrlFromWhiteList(HttpServletRequest httpRequest) {
 131         String pathInfo;
 132         List<String> excludedUrls = authCookieConf.getExcludedUrls();
 133         pathInfo = httpRequest.getPathInfo().toLowerCase();
 134         log.debug("SessionValidationFilter: white list validation ->  PathInfo: {} ", pathInfo);
 135         Stream<String> stream = excludedUrls.stream();
 136         pathInfo.getClass();
 137         return stream.anyMatch(pathInfo::matches);
 138     }
 139
 140     private Boolean isConsumerBusinessLogic() {
 141        return config.getConsumerBusinessLogic();
 142     }
 143     @Override
 144     public void destroy() {
 145
 146     }
 147 }