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1   /*
2    * Copyright (c) 2014 Contextream, Inc. and others.  All rights reserved.
3    *
4    * This program and the accompanying materials are made available under the
5    * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6    * and is available at http://www.eclipse.org/legal/epl-v10.html
7    */
8   package org.opendaylight.lispflowmapping.implementation.authentication;
9   
10  import org.opendaylight.lispflowmapping.interfaces.lisp.ILispAuthentication;
11  import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
12  import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapNotify;
13  import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapRegister;
14  import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
15  import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.authkey.container.MappingAuthkey;
16  import org.slf4j.Logger;
17  import org.slf4j.LoggerFactory;
18  
19  public final class LispAuthenticationUtil {
20      protected static final Logger LOG = LoggerFactory.getLogger(LispAuthenticationUtil.class);
21  
22      // Utility class, should not be instantiated
23      private LispAuthenticationUtil() {
24      }
25  
26      public static boolean validate(MapRegister mapRegister, Eid eid, MappingAuthkey key) {
27          if (key == null) {
28              LOG.warn("Authentication failed: mapping authentication key is null");
29              return false;
30          }
31          short keyId = 0;
32          if (mapRegister.getKeyId() != null) {
33              keyId = mapRegister.getKeyId();
34          }
35          if (keyId != key.getKeyType().shortValue()) {
36              LOG.warn("Authentication failed: key-ID in Map-Register is different from the one on file for {}",
37                      LispAddressStringifier.getString(eid));
38              return false;
39          }
40          ILispAuthentication authentication = LispAuthenticationFactory.getAuthentication(LispKeyIDEnum.valueOf(keyId));
41          return authentication.validate(mapRegister, key.getKeyString());
42      }
43  
44      public static byte[] createAuthenticationData(MapNotify mapNotify, String key) {
45          // We assume that the key-ID is correctly set in the Map-Notify message
46          ILispAuthentication authentication = LispAuthenticationFactory.getAuthentication(LispKeyIDEnum.valueOf(mapNotify.getKeyId()));
47          return authentication.getAuthenticationData(mapNotify, key);
48      }
49  
50  }