src/main/java/org/onap/clamp/clds/ClampServlet.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP CLAMP
   4  * ================================================================================
   5  * Copyright (C) 2018 AT&T Intellectual Property. All rights
   6  *                             reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  * http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END============================================
  20  * ===================================================================
  21  *
  22  */
  23
  24 package org.onap.clamp.clds;
  25
  26 import com.att.eelf.configuration.EELFLogger;
  27 import com.att.eelf.configuration.EELFManager;
  28
  29 import java.io.IOException;
  30 import java.security.Principal;
  31 import java.util.ArrayList;
  32 import java.util.List;
  33
  34 import javax.servlet.ServletException;
  35 import javax.servlet.http.HttpServletRequest;
  36 import javax.servlet.http.HttpServletResponse;
  37
  38 import org.apache.camel.component.servlet.CamelHttpTransportServlet;
  39 import org.onap.aaf.cadi.principal.X509Principal;
  40 import org.onap.clamp.clds.service.SecureServicePermission;
  41 import org.springframework.context.ApplicationContext;
  42 import org.springframework.http.HttpStatus;
  43 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  44 import org.springframework.security.core.Authentication;
  45 import org.springframework.security.core.GrantedAuthority;
  46 import org.springframework.security.core.authority.SimpleGrantedAuthority;
  47 import org.springframework.security.core.context.SecurityContextHolder;
  48 import org.springframework.security.core.userdetails.User;
  49 import org.springframework.web.context.support.WebApplicationContextUtils;
  50
  51 public class ClampServlet extends CamelHttpTransportServlet {
  52
  53     /**
  54      *
  55      */
  56     private static final long serialVersionUID = -4198841134910211542L;
  57
  58     protected static final EELFLogger logger = EELFManager.getInstance().getLogger(ClampServlet.class);
  59     public static final String PERM_INSTANCE = "clamp.config.security.permission.instance";
  60     public static final String PERM_CL = "clamp.config.security.permission.type.cl";
  61     public static final String PERM_TEMPLATE = "clamp.config.security.permission.type.template";
  62     public static final String PERM_VF = "clamp.config.security.permission.type.filter.vf";
  63     public static final String PERM_MANAGE = "clamp.config.security.permission.type.cl.manage";
  64     public static final String PERM_TOSCA = "clamp.config.security.permission.type.tosca";
  65     private static List<SecureServicePermission> permissionList;
  66
  67     private synchronized List<SecureServicePermission> getPermissionList() {
  68         if (permissionList == null) {
  69             permissionList=new ArrayList<>();
  70             ApplicationContext applicationContext = WebApplicationContextUtils
  71                 .getWebApplicationContext(getServletContext());
  72             String cldsPermissionInstance = applicationContext.getEnvironment().getProperty(PERM_INSTANCE);
  73             permissionList.add(SecureServicePermission.create(applicationContext.getEnvironment().getProperty(PERM_CL),
  74                 cldsPermissionInstance, "read"));
  75             permissionList.add(SecureServicePermission.create(applicationContext.getEnvironment().getProperty(PERM_CL),
  76                 cldsPermissionInstance, "update"));
  77             permissionList.add(SecureServicePermission.create(
  78                 applicationContext.getEnvironment().getProperty(PERM_TEMPLATE), cldsPermissionInstance, "read"));
  79             permissionList.add(SecureServicePermission.create(
  80                 applicationContext.getEnvironment().getProperty(PERM_TEMPLATE), cldsPermissionInstance, "update"));
  81             permissionList.add(SecureServicePermission.create(applicationContext.getEnvironment().getProperty(PERM_VF),
  82                 cldsPermissionInstance, "*"));
  83             permissionList.add(SecureServicePermission
  84                 .create(applicationContext.getEnvironment().getProperty(PERM_MANAGE), cldsPermissionInstance, "*"));
  85             permissionList.add(SecureServicePermission
  86                 .create(applicationContext.getEnvironment().getProperty(PERM_TOSCA), cldsPermissionInstance, "read"));
  87             permissionList.add(SecureServicePermission
  88                 .create(applicationContext.getEnvironment().getProperty(PERM_TOSCA), cldsPermissionInstance, "update"));
  89         }
  90         return permissionList;
  91     }
  92
  93     /**
  94      * When AAF is enabled, request object will contain a cadi Wrapper, so queries
  95      * to isUserInRole will invoke a http call to AAF server.
  96      */
  97     @Override
  98     protected void doService(HttpServletRequest request, HttpServletResponse response)
  99         throws ServletException, IOException {
 100
 101         Principal p = request.getUserPrincipal();
 102         if (p instanceof X509Principal) {
 103             // When AAF is enabled, there is a need to provision the permissions to Spring
 104             // system
 105             List<GrantedAuthority> grantedAuths = new ArrayList<>();
 106             for (SecureServicePermission perm : getPermissionList()) {
 107                 String permString = perm.toString();
 108                 if (request.isUserInRole(permString)) {
 109                     grantedAuths.add(new SimpleGrantedAuthority(permString));
 110                 }
 111             }
 112             Authentication auth = new UsernamePasswordAuthenticationToken(new User(p.getName(), "", grantedAuths), "",
 113                 grantedAuths);
 114             SecurityContextHolder.getContext().setAuthentication(auth);
 115         }
 116         try {
 117             super.doService(request, response);
 118         } catch (ServletException | IOException ioe) {
 119             logger.error("Exception caught when executing doService in servlet", ioe);
 120             try {
 121                 response.sendError(HttpStatus.INTERNAL_SERVER_ERROR.value());
 122             } catch (IOException e) {
 123                 logger.error("Exception caught when executing HTTP sendError in servlet", e);
 124             }
 125         }
 126
 127     }
 128 }