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/*******************************************************************************
* =============LICENSE_START=========================================================
*
* =================================================================================
* Copyright (c) 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*******************************************************************************/
package org.onap.ccsdk.dashboard.controller;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.onap.portalsdk.core.web.support.AppUtils;
public class Authorizer {
private static Authorizer authorizer = new Authorizer();
private static final EELFLoggerDelegate LOGGER = EELFLoggerDelegate.getLogger(Authorizer.class);
private static final String AUTH_PROP_FILE_NAME = "authorizer.properties";
private static final String DCAE_ROLES_KEY = "dcae_roles";
public static Authorizer getAuthorizer() {
return authorizer;
}
public boolean isAuthorized(HttpServletRequest request) {
final String method = request.getMethod();
final String resource = request.getRequestURI();
final Set<Authorizer.Role> authorizedRoles = getAuthorizedRoles(method, resource);
// Anybody can access this page, no need to check
if (authorizedRoles.contains(Role.ANY)) {
return true;
}
final Set<Authorizer.Role> roles = getRoles(request);
final Set<Authorizer.Role> intersection = new HashSet<> (roles);
intersection.retainAll(authorizedRoles); // Removes all roles in roles that aren't contained in authorizedRoles.
return !intersection.isEmpty(); //If the intersection is not empty, then this user is authorized
}
// Helper method to set roles
public void putRoles(HttpServletRequest request, Set<Role> roles) {
request.getSession().setAttribute(DCAE_ROLES_KEY, roles);
}
// Returns roles for the current user making the request
@SuppressWarnings("unchecked")
private Set<Authorizer.Role> getRoles(HttpServletRequest request) {
// If roles is empty, then write the user's roles to the session
if (request.getSession().getAttribute(DCAE_ROLES_KEY) == null) {
// HashSet to be used to for putRoles
HashSet<Role> roles = new HashSet<>();
roles.add(Role.READER);
// Get roles and turn into list of role objects
HttpSession session = AppUtils.getSession(request);
String roleType = (String)session.getAttribute("auth_role");
if (roleType != null) {
switch (roleType) {
case "ADMIN": roles.add(Role.ADMIN);
break;
case "WRITE": roles.add(Role.WRITER);
break;
case "READ": roles.add(Role.READER);
break;
default: roles.add(Role.READER);
break;
}
}
// Write user roles
putRoles(request, roles);
}
// Check if attribute DCAE_ROLES_KEY is valid
final Object rawRoles = request.getSession().getAttribute(DCAE_ROLES_KEY);
if (!(rawRoles instanceof Set<?>)) {
throw new RuntimeException("Unrecognized object found in session for key=" + DCAE_ROLES_KEY);
}
return (Set<Authorizer.Role>) request.getSession().getAttribute(DCAE_ROLES_KEY);
}
// Returns roles authorized to perform the requested method (i.e. getAuthorizedRoles("POST", "/ecd-app-att/deployments"))
private Set<Authorizer.Role> getAuthorizedRoles(String method, String resource) {
final Properties resourceRoles = new Properties();
try {
resourceRoles.load(Thread.currentThread().getContextClassLoader().getResourceAsStream(AUTH_PROP_FILE_NAME));
final String[] splitMethodResourceKey = (method + resource.replace("/", ".")).split("\\.",0);
final String methodResourceKey = splitMethodResourceKey[0] + "." + splitMethodResourceKey[2];
if (!resourceRoles.containsKey(methodResourceKey)) {
LOGGER.warn(AUTH_PROP_FILE_NAME + " does not contain roles for " + methodResourceKey + "; defaulting " + Authorizer.Role.ANY);
return new HashSet<> (Collections.singleton(Role.ANY));
}
final String[] rawAuthorizedRoles = ((String) resourceRoles.get(methodResourceKey)).split(",");
final Set<Authorizer.Role> authorizedRoles = new HashSet<> ();
for (String rawAuthorizedRole : rawAuthorizedRoles) {
authorizedRoles.add(Authorizer.Role.valueOf(rawAuthorizedRole));
}
return authorizedRoles;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public enum Role {
ADMIN,
READER,
WRITER,
ANY,
NONE;
}
}
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