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/*
* Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.aaa.authz.srv;
import java.util.List;
import org.opendaylight.aaa.api.Authentication;
import org.opendaylight.aaa.api.AuthenticationService;
import org.opendaylight.controller.config.yang.config.aaa_authz.srv.Policies;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.yang.gen.v1.urn.aaa.yang.authz.ds.rev140722.ActionType;
import org.opendaylight.yang.gen.v1.urn.aaa.yang.authz.ds.rev140722.AuthorizationResponseType;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
/**
* @author lmukkama Date: 9/2/14
*/
public class AuthzServiceImpl {
private static List<Policies> listPolicies;
private static final String WILDCARD_TOKEN = "*";
public static boolean isAuthorized(LogicalDatastoreType logicalDatastoreType,
YangInstanceIdentifier yangInstanceIdentifier, ActionType actionType) {
AuthorizationResponseType authorizationResponseType = AuthzServiceImpl.reqAuthorization(
actionType, logicalDatastoreType, yangInstanceIdentifier);
return authorizationResponseType.equals(AuthorizationResponseType.Authorized);
}
public static boolean isAuthorized(ActionType actionType) {
AuthorizationResponseType authorizationResponseType = AuthzServiceImpl
.reqAuthorization(actionType);
return authorizationResponseType.equals(AuthorizationResponseType.Authorized);
}
public static void setPolicies(List<Policies> policies) {
AuthzServiceImpl.listPolicies = policies;
}
public static AuthorizationResponseType reqAuthorization(ActionType actionType) {
AuthenticationService authenticationService = AuthzDomDataBroker.getInstance()
.getAuthService();
if (authenticationService != null && AuthzServiceImpl.listPolicies != null
&& AuthzServiceImpl.listPolicies.size() > 0) {
Authentication authentication = authenticationService.get();
if (authentication != null && authentication.roles() != null
&& authentication.roles().size() > 0) {
return checkAuthorization(actionType, authentication);
}
}
return AuthorizationResponseType.NotAuthorized;
}
public static AuthorizationResponseType reqAuthorization(ActionType actionType,
LogicalDatastoreType logicalDatastoreType, YangInstanceIdentifier yangInstanceIdentifier) {
AuthenticationService authenticationService = AuthzDomDataBroker.getInstance()
.getAuthService();
if (authenticationService != null && AuthzServiceImpl.listPolicies != null
&& AuthzServiceImpl.listPolicies.size() > 0) {
// Authentication Service exists. Can do authorization checks
Authentication authentication = authenticationService.get();
if (authentication != null && authentication.roles() != null
&& authentication.roles().size() > 0) {
// Authentication claim object exists with atleast one role
return checkAuthorization(actionType, authentication, logicalDatastoreType,
yangInstanceIdentifier);
}
}
return AuthorizationResponseType.Authorized;
}
private static AuthorizationResponseType checkAuthorization(ActionType actionType,
Authentication authentication, LogicalDatastoreType logicalDatastoreType,
YangInstanceIdentifier yangInstanceIdentifier) {
for (Policies policy : AuthzServiceImpl.listPolicies) {
// Action type is compared as string, since its type is string in
// the config yang. Comparison is case insensitive
if (authentication.roles().contains(policy.getRole().getValue())
&& (policy.getResource().getValue().equals(WILDCARD_TOKEN) || policy
.getResource().getValue().equals(yangInstanceIdentifier.toString()))
&& (policy.getAction().toLowerCase()
.equals(ActionType.Any.name().toLowerCase()) || actionType.name()
.toLowerCase().equals(policy.getAction().toLowerCase()))) {
return AuthorizationResponseType.Authorized;
}
}
// For helium release we unauthorize other requests.
return AuthorizationResponseType.NotAuthorized;
}
private static AuthorizationResponseType checkAuthorization(ActionType actionType,
Authentication authentication) {
for (Policies policy : AuthzServiceImpl.listPolicies) {
if (authentication.roles().contains(policy.getRole().getValue())
&& (policy.getAction().equalsIgnoreCase(ActionType.Any.name()) || policy
.getAction().equalsIgnoreCase(actionType.name()))) {
return AuthorizationResponseType.Authorized;
}
}
return AuthorizationResponseType.NotAuthorized;
}
}
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