Drive relying party endpoint selection off of metadata
[java-idp.git] / src / edu / internet2 / middleware / shibboleth / idp / profile / saml1 / AttributeQueryProfileHandler.java
1 /*
2  * Copyright [2006] [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 java.util.ArrayList;
20
21 import javax.servlet.ServletRequest;
22 import javax.servlet.ServletResponse;
23
24 import org.apache.log4j.Logger;
25 import org.opensaml.common.binding.BindingException;
26 import org.opensaml.common.binding.decoding.MessageDecoder;
27 import org.opensaml.common.binding.encoding.MessageEncoder;
28 import org.opensaml.common.binding.security.SAMLSecurityPolicy;
29 import org.opensaml.common.xml.SAMLConstants;
30 import org.opensaml.saml1.binding.decoding.HTTPSOAP11Decoder;
31 import org.opensaml.saml1.binding.encoding.HTTPSOAP11Encoder;
32 import org.opensaml.saml1.core.AttributeQuery;
33 import org.opensaml.saml1.core.Response;
34 import org.opensaml.saml1.core.Statement;
35 import org.opensaml.saml1.core.StatusCode;
36 import org.opensaml.saml2.metadata.provider.MetadataProviderException;
37 import org.opensaml.ws.security.SecurityPolicyException;
38
39 import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
40 import edu.internet2.middleware.shibboleth.common.profile.ProfileRequest;
41 import edu.internet2.middleware.shibboleth.common.profile.ProfileResponse;
42 import edu.internet2.middleware.shibboleth.common.relyingparty.RelyingPartyConfiguration;
43 import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml1.AttributeQueryConfiguration;
44
45 /**
46  * SAML 1 Attribute Query profile handler.
47  */
48 public class AttributeQueryProfileHandler extends AbstractSAML1ProfileHandler {
49
50     /** Class logger. */
51     private final Logger log = Logger.getLogger(AttributeQueryProfileHandler.class);
52
53     /** {@inheritDoc} */
54     public String getProfileId() {
55         return "urn:mace:shibboleth:2.0:idp:profiles:saml1:query:attribute";
56     }
57
58     /** {@inheritDoc} */
59     public void processRequest(ProfileRequest<ServletRequest> request, ProfileResponse<ServletResponse> response)
60             throws ProfileException {
61
62         AttributeQueryContext requestContext = new AttributeQueryContext(request, response);
63
64         Response samlResponse;
65         try {
66             decodeRequest(requestContext);
67
68             resolvePrincipal(requestContext);
69
70             ArrayList<Statement> statements = new ArrayList<Statement>();
71             statements.add(buildAttributeStatement(requestContext, "urn:oasis:names:tc:SAML:1.0:cm:sender-vouches"));
72
73             samlResponse = buildResponse(requestContext, statements);
74         } catch (ProfileException e) {
75             samlResponse = buildErrorResponse(requestContext);
76         }
77     }
78
79     /**
80      * Decodes the message in the request and adds it to the request context.
81      * 
82      * @param requestContext request context contianing the request to decode
83      * 
84      * @throws ProfileException throw if there is a problem decoding the request
85      */
86     protected void decodeRequest(AttributeQueryContext requestContext) throws ProfileException {
87         if (log.isDebugEnabled()) {
88             log.debug("Decoding incomming request");
89         }
90         MessageDecoder<ServletRequest> decoder = getMessageDecoderFactory().getMessageDecoder(
91                 HTTPSOAP11Decoder.BINDING_URI);
92         if (decoder == null) {
93             throw new ProfileException("No request decoder was registered for binding type: "
94                     + HTTPSOAP11Decoder.BINDING_URI);
95         }
96         super.populateMessageDecoder(decoder);
97
98         decoder.setRequest(requestContext.getProfileRequest().getRawRequest());
99         requestContext.setMessageDecoder(decoder);
100
101         try {
102             decoder.decode();
103             if (log.isDebugEnabled()) {
104                 log.debug("Decoded request");
105             }
106         } catch (BindingException e) {
107             log.error("Error decoding attribute query message", e);
108             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, null, "Error decoding message"));
109             throw new ProfileException("Error decoding attribute query message");
110         } catch (SecurityPolicyException e) {
111             log.error("Message did not meet security policy requirements", e);
112             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, StatusCode.REQUEST_DENIED,
113                     "Message did not meet security policy requirements"));
114             throw new ProfileException("Message did not meet security policy requirements", e);
115         } finally {
116             // Set as much information as can be retrieved from the decoded message
117             SAMLSecurityPolicy securityPolicy = requestContext.getMessageDecoder().getSecurityPolicy();
118             requestContext.setRelyingPartyId(securityPolicy.getIssuer());
119
120             try {
121                 requestContext.setRelyingPartyMetadata(getMetadataProvider().getEntityDescriptor(
122                         requestContext.getRelyingPartyId()));
123
124                 requestContext.setRelyingPartyRoleMetadata(requestContext.getRelyingPartyMetadata().getSPSSODescriptor(
125                         SAMLConstants.SAML1P_NS));
126
127                 RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(requestContext.getRelyingPartyId());
128                 requestContext.setRelyingPartyConfiguration(rpConfig);
129
130                 requestContext.setAssertingPartyId(requestContext.getRelyingPartyConfiguration().getProviderId());
131
132                 requestContext.setAssertingPartyMetadata(getMetadataProvider().getEntityDescriptor(
133                         requestContext.getAssertingPartyId()));
134
135                 requestContext.setAssertingPartyRoleMetadata(requestContext.getAssertingPartyMetadata()
136                         .getAttributeAuthorityDescriptor(SAMLConstants.SAML1P_NS));
137
138                 requestContext.setProfileConfiguration((AttributeQueryConfiguration) rpConfig
139                         .getProfileConfiguration(AttributeQueryConfiguration.PROFILE_ID));
140
141                 requestContext.setSamlRequest((AttributeQuery) requestContext.getMessageDecoder().getSAMLMessage());
142             } catch (MetadataProviderException e) {
143                 log.error("Unable to locate metadata for asserting or relying party");
144                 requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, null,
145                         "Error locating party metadata"));
146                 throw new ProfileException("Error locating party metadata");
147             }
148         }
149     }
150
151     /**
152      * Encodes the request's SAML response and writes it to the servlet response.
153      * 
154      * @param requestContext current request context
155      * 
156      * @throws ProfileException thrown if no message encoder is registered for this profiles binding
157      */
158     protected void encodeResponse(AttributeQueryContext requestContext) throws ProfileException {
159         if (log.isDebugEnabled()) {
160             log.debug("Encoding response to SAML request from relying party " + requestContext.getRelyingPartyId());
161         }
162         MessageEncoder<ServletResponse> encoder = getMessageEncoderFactory().getMessageEncoder(
163                 HTTPSOAP11Encoder.BINDING_URI);
164         if (encoder == null) {
165             throw new ProfileException("No response encoder was registered for binding type: "
166                     + HTTPSOAP11Encoder.BINDING_URI);
167         }
168
169         super.populateMessageEncoder(encoder);
170         encoder.setResponse(requestContext.getProfileResponse().getRawResponse());
171         encoder.setSamlMessage(requestContext.getSamlResponse());
172         requestContext.setMessageEncoder(encoder);
173
174         try {
175             encoder.encode();
176         } catch (BindingException e) {
177             throw new ProfileException("Unable to encode response to relying party: "
178                     + requestContext.getRelyingPartyId(), e);
179         }
180     }
181
182     /** Basic data structure used to accumulate information as a request is being processed. */
183     protected class AttributeQueryContext extends
184             SAML1ProfileRequestContext<AttributeQuery, Response, AttributeQueryConfiguration> {
185
186         /**
187          * Constructor.
188          * 
189          * @param request current profile request
190          * @param response current profile response
191          */
192         public AttributeQueryContext(ProfileRequest<ServletRequest> request, ProfileResponse<ServletResponse> response) {
193             super(request, response);
194         }
195     }
196 }