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    1   /*
    2    * Copyright [2007] [University Corporation for Advanced Internet Development, Inc.]
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    * http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package edu.internet2.middleware.shibboleth.idp.profile.saml1;
    18
    19  import org.joda.time.DateTime;
    20  import org.joda.time.chrono.ISOChronology;
    21  import org.opensaml.common.binding.SAMLMessageContext;
    22  import org.opensaml.common.binding.decoding.SAMLMessageDecoder;
    23  import org.opensaml.saml1.binding.decoding.BaseSAML1MessageDecoder;
    24  import org.opensaml.ws.message.MessageContext;
    25  import org.opensaml.ws.message.decoder.MessageDecodingException;
    26  import org.opensaml.ws.transport.http.HTTPInTransport;
    27  import org.opensaml.xml.util.DatatypeHelper;
    28  import org.slf4j.Logger;
    29  import org.slf4j.LoggerFactory;
    30
    31  import edu.internet2.middleware.shibboleth.idp.profile.saml1.ShibbolethSSOProfileHandler.ShibbolethSSORequestContext;
    32
    33  /**
    34   * Shibboleth 1.0 SSO authentication request message decoder.
    35   */
    36  public class ShibbolethSSODecoder extends BaseSAML1MessageDecoder implements SAMLMessageDecoder {
    37
    38      /** Class logger. */
    39      private final Logger log = LoggerFactory.getLogger(ShibbolethSSODecoder.class);
    40
    41      /** Constructor. */
    42      public ShibbolethSSODecoder(){
    43          super();
    44      }
    45
    46      /** {@inheritDoc} */
    47      public String getBindingURI() {
    48          return "urn:mace:shibboleth:1.0:profiles:AuthnRequest";
    49      }
    50
    51      /** {@inheritDoc} */
    52      protected void doDecode(MessageContext messageContext) throws MessageDecodingException {
    53          if (!(messageContext instanceof ShibbolethSSORequestContext)) {
    54              log.warn("Invalid message context type, this decoder only support ShibbolethSSORequestContext");
    55              throw new MessageDecodingException(
    56                      "Invalid message context type, this decoder only support ShibbolethSSORequestContext");
    57          }
    58
    59          if (!(messageContext.getInboundMessageTransport() instanceof HTTPInTransport)) {
    60              log.warn("Invalid inbound message transport type, this decoder only support HTTPInTransport");
    61              throw new MessageDecodingException(
    62                      "Invalid inbound message transport type, this decoder only support HTTPInTransport");
    63          }
    64
    65          ShibbolethSSORequestContext requestContext = (ShibbolethSSORequestContext) messageContext;
    66          HTTPInTransport transport = (HTTPInTransport) messageContext.getInboundMessageTransport();
    67
    68          String providerId = DatatypeHelper.safeTrimOrNullString(transport.getParameterValue("providerId"));
    69          if (providerId == null) {
    70              log.warn("No providerId parameter given in Shibboleth SSO authentication request.");
    71              throw new MessageDecodingException(
    72                      "No providerId parameter given in Shibboleth SSO authentication request.");
    73          }
    74          requestContext.setInboundMessageIssuer(providerId);
    75
    76          String shire = DatatypeHelper.safeTrimOrNullString(transport.getParameterValue("shire"));
    77          if (shire == null) {
    78              log.warn("No shire parameter given in Shibboleth SSO authentication request.");
    79              throw new MessageDecodingException("No shire parameter given in Shibboleth SSO authentication request.");
    80          }
    81          requestContext.setSpAssertionConsumerService(shire);
    82
    83          String target = DatatypeHelper.safeTrimOrNullString(transport.getParameterValue("target"));
    84          if (target == null) {
    85              log.warn("No target parameter given in Shibboleth SSO authentication request.");
    86              throw new MessageDecodingException("No target parameter given in Shibboleth SSO authentication request.");
    87          }
    88          requestContext.setRelayState(target);
    89
    90          String timeStr = DatatypeHelper.safeTrimOrNullString(transport.getParameterValue("time"));
    91          if (timeStr != null) {
    92              long time = Long.parseLong(timeStr) * 1000;
    93              requestContext.setInboundSAMLMessageIssueInstant(new DateTime(time, ISOChronology.getInstanceUTC()));
    94          }
    95
    96          populateRelyingPartyMetadata(requestContext);
    97      }
    98
    99      /** {@inheritDoc} */
    100     protected boolean isIntendedDestinationEndpointURIRequired(SAMLMessageContext samlMsgCtx) {
    101         return false;
    102     }
    103
    104     /** {@inheritDoc} */
    105     protected String getIntendedDestinationEndpointURI(SAMLMessageContext samlMsgCtx) throws MessageDecodingException {
    106         // Not relevant in this binding/profile, there is neither SAML message
    107         // nor binding parameter with this information
    108         return null;
    109     }
    110
    111 }