separated claims processing out into its own service, closes #796

openid-connect-common/src/main/java/org/mitre/uma/service/ClaimsProcessingService.java

@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * Copyright 2015 The MITRE Corporation
+ *   and the MIT Kerberos and Internet Trust Consortium
+ *
+ * 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.
+ *******************************************************************************/
+
+package org.mitre.uma.service;
+
+import java.util.Collection;
+
+import org.mitre.uma.model.Claim;
+
+/**
+ * 
+ * Processes claims presented during an UMA transaction.
+ * 
+ * @author jricher
+ *
+ */
+public interface ClaimsProcessingService {
+
+	/**
+	 * 
+	 * Determine whether or not the claims that have been supplied are
+	 * sufficient to fulfill the requirements given by the claims that
+	 * are required.
+	 * 
+	 * @param claimsRequired the required claims to check against
+	 * @param claimsSupplied the supplied claims to test
+	 * @return the unmatched claims (if any), an empty set if the claims are satisfied, never null
+	 */
+	public Collection<Claim> claimsAreSatisfied(Collection<Claim> claimsRequired, Collection<Claim> claimsSupplied);
+
+}

openid-connect-server/src/main/java/org/mitre/uma/service/MatchAllClaimsProcessor.java

@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * Copyright 2015 The MITRE Corporation
+ *   and the MIT Kerberos and Internet Trust Consortium
+ *
+ * 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.
+ *******************************************************************************/
+
+package org.mitre.uma.service;
+
+import java.util.Collection;
+import java.util.HashSet;
+
+import org.mitre.uma.model.Claim;
+import org.springframework.stereotype.Service;
+
+/**
+ * Tests if all the claims in the required set have a matching 
+ * value in the supplied set.
+ * 
+ * @author jricher
+ *
+ */
+@Service("matchAllClaimsProcessor")
+public class MatchAllClaimsProcessor implements ClaimsProcessingService {
+
+	@Override
+	public Collection<Claim> claimsAreSatisfied(Collection<Claim> claimsRequired, Collection<Claim> claimsSupplied) {
+
+		Collection<Claim> claimsUnmatched = new HashSet<>(claimsRequired);
+		
+		// see if each of the required claims has a counterpart in the supplied claims set
+		for (Claim required : claimsRequired) {
+			for (Claim supplied : claimsSupplied) {
+				
+				if (required.getIssuer().containsAll(supplied.getIssuer())) {
+					// it's from the right issuer
+					
+					if (required.getName().equals(supplied.getName()) &&
+							required.getValue().equals(supplied.getValue())) {
+						
+						// the claim matched, pull it from the set
+						claimsUnmatched.remove(required);
+						
+					}
+					
+				}
+			}
+		}
+
+		// if there's anything left then the claims aren't satisfied, return the leftovers
+		return claimsUnmatched;
+		
+	}
+
+}

openid-connect-server/src/main/java/org/mitre/uma/web/AuthorizationRequestEndpoint.java

@@ -18,6 +18,7 @@
 package org.mitre.uma.web;
 
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.UUID;
@@ -40,6 +41,7 @@ import org.mitre.openid.connect.view.JsonErrorView;
 import org.mitre.uma.model.Claim;
 import org.mitre.uma.model.PermissionTicket;
 import org.mitre.uma.model.ResourceSet;
+import org.mitre.uma.service.ClaimsProcessingService;
 import org.mitre.uma.service.PermissionService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -105,6 +107,9 @@ public class AuthorizationRequestEndpoint {
 	@Autowired
 	private WebResponseExceptionTranslator providerExceptionHandler;
 
+	@Autowired
+	private ClaimsProcessingService claimsProcessingService;
+
 	@RequestMapping(method = RequestMethod.POST, consumes = MimeTypeUtils.APPLICATION_JSON_VALUE, produces = MimeTypeUtils.APPLICATION_JSON_VALUE)
 	public String authorizationRequest(@RequestBody String jsonString, Model m, Authentication auth) {
 		
@@ -132,37 +137,18 @@ public class AuthorizationRequestEndpoint {
 					// found the ticket, see if it's any good
 					
 					ResourceSet rs = ticket.getPermission().getResourceSet();
-					Collection<Claim> claimsRequired = rs.getClaimsRequired();
-					
-					Collection<Claim> claimsSupplied = ticket.getClaimsSupplied();
-					
-					Collection<Claim> claimsUnmatched = new HashSet<>(claimsRequired);
-					
-					// see if each of the required claims has a counterpart in the supplied claims set
-					// TODO: move this component to a claims checking service (#796)
-					for (Claim required : claimsRequired) {
-						for (Claim supplied : claimsSupplied) {
-							
-							if (required.getIssuer().containsAll(supplied.getIssuer())) {
-								// it's from the right issuer
 					
-								if (required.getName().equals(supplied.getName()) &&
-										required.getValue().equals(supplied.getValue())) {
+					if (rs.getClaimsRequired() == null || rs.getClaimsRequired().isEmpty()) {
+						// the required claims are empty, this resource has no way to be authorized
 						
-									// the claim matched, pull it from the set
-									claimsUnmatched.remove(required);
-									
-								}
-								
-								
-							}
-						}
+						m.addAttribute(JsonErrorView.ERROR, "not_authorized");
+						m.addAttribute(JsonErrorView.ERROR_MESSAGE, "This resource set can not be accessed.");
+						m.addAttribute(HttpCodeView.CODE, HttpStatus.FORBIDDEN);
 					}
 
-					// note that if the required claims are empty we don't want to return a token
-					if (!claimsRequired.isEmpty() && claimsUnmatched.isEmpty()) {
-						// we matched all the claims, create and return the token
+					Collection<Claim> claimsUnmatched = claimsProcessingService.claimsAreSatisfied(rs.getClaimsRequired(), ticket.getClaimsSupplied());
 					
+					if (claimsUnmatched.isEmpty()) {
 						
 						// TODO: move this whole mess to the OIDCTokenService (#797)