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User Managed Access (UMA) extension of the MITREid Connect server
/*******************************************************************************
* Copyright 2017 The MITRE Corporation
* and the MIT 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.web;
import java.util.Map;
import org.mitre.oauth2.model.OAuth2AccessTokenEntity;
import org.mitre.oauth2.service.OAuth2TokenEntityService;
import org.mitre.oauth2.service.SystemScopeService;
import org.mitre.oauth2.web.AuthenticationUtilities;
import org.mitre.openid.connect.view.HttpCodeView;
import org.mitre.openid.connect.view.JsonEntityView;
import org.mitre.openid.connect.view.JsonErrorView;
import org.mitre.uma.model.Claim;
import org.mitre.uma.model.ClaimProcessingResult;
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.mitre.uma.service.UmaTokenService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.core.Authentication;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.MimeTypeUtils;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.google.common.collect.ImmutableMap;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonPrimitive;
/**
* @author jricher
*
*/
@Controller
@RequestMapping("/" + AuthorizationRequestEndpoint.URL)
public class AuthorizationRequestEndpoint {
// Logger for this class
private static final Logger logger = LoggerFactory.getLogger(AuthorizationRequestEndpoint.class);
public static final String RPT = "rpt";
public static final String TICKET = "ticket";
public static final String URL = "authz_request";
@Autowired
private PermissionService permissionService;
@Autowired
private OAuth2TokenEntityService tokenService;
@Autowired
private ClaimsProcessingService claimsProcessingService;
@Autowired
private UmaTokenService umaTokenService;
@RequestMapping(method = RequestMethod.POST, consumes = MimeTypeUtils.APPLICATION_JSON_VALUE, produces = MimeTypeUtils.APPLICATION_JSON_VALUE)
public String authorizationRequest(@RequestBody String jsonString, Model m, Authentication auth) {
AuthenticationUtilities.ensureOAuthScope(auth, SystemScopeService.UMA_AUTHORIZATION_SCOPE);
JsonParser parser = new JsonParser();
JsonElement e = parser.parse(jsonString);
if (e.isJsonObject()) {
JsonObject o = e.getAsJsonObject();
if (o.has(TICKET)) {
OAuth2AccessTokenEntity incomingRpt = null;
if (o.has(RPT)) {
String rptValue = o.get(RPT).getAsString();
incomingRpt = tokenService.readAccessToken(rptValue);
}
String ticketValue = o.get(TICKET).getAsString();
PermissionTicket ticket = permissionService.getByTicket(ticketValue);
if (ticket != null) {
// found the ticket, see if it's any good
ResourceSet rs = ticket.getPermission().getResourceSet();
if (rs.getPolicies() == null || rs.getPolicies().isEmpty()) {
// the required claims are empty, this resource has no way to be authorized
m.addAttribute(JsonErrorView.ERROR, "not_authorized");
m.addAttribute(JsonErrorView.ERROR_MESSAGE, "This resource set can not be accessed.");
m.addAttribute(HttpCodeView.CODE, HttpStatus.FORBIDDEN);
return JsonErrorView.VIEWNAME;
} else {
// claims weren't empty or missing, we need to check against what we have
ClaimProcessingResult result = claimsProcessingService.claimsAreSatisfied(rs, ticket);
if (result.isSatisfied()) {
// the service found what it was looking for, issue a token
// we need to downscope this based on the required set that was matched if it was matched
OAuth2Authentication o2auth = (OAuth2Authentication) auth;
OAuth2AccessTokenEntity token = umaTokenService.createRequestingPartyToken(o2auth, ticket, result.getMatched());
// if we have an inbound RPT, throw it out because we're replacing it
if (incomingRpt != null) {
tokenService.revokeAccessToken(incomingRpt);
}
Map entity = ImmutableMap.of("rpt", token.getValue());
m.addAttribute(JsonEntityView.ENTITY, entity);
return JsonEntityView.VIEWNAME;
} else {
// if we got here, the claim didn't match, forward the user to the claim gathering endpoint
JsonObject entity = new JsonObject();
entity.addProperty(JsonErrorView.ERROR, "need_info");
JsonObject details = new JsonObject();
JsonObject rpClaims = new JsonObject();
rpClaims.addProperty("redirect_user", true);
rpClaims.addProperty("ticket", ticketValue);
JsonArray req = new JsonArray();
for (Claim claim : result.getUnmatched()) {
JsonObject c = new JsonObject();
c.addProperty("name", claim.getName());
c.addProperty("friendly_name", claim.getFriendlyName());
c.addProperty("claim_type", claim.getClaimType());
JsonArray f = new JsonArray();
for (String format : claim.getClaimTokenFormat()) {
f.add(new JsonPrimitive(format));
}
c.add("claim_token_format", f);
JsonArray i = new JsonArray();
for (String issuer : claim.getIssuer()) {
i.add(new JsonPrimitive(issuer));
}
c.add("issuer", i);
req.add(c);
}
rpClaims.add("required_claims", req);
details.add("requesting_party_claims", rpClaims);
entity.add("error_details", details);
m.addAttribute(JsonEntityView.ENTITY, entity);
return JsonEntityView.VIEWNAME;
}
}
} else {
// ticket wasn't found, return an error
m.addAttribute(HttpStatus.BAD_REQUEST);
m.addAttribute(JsonErrorView.ERROR, "invalid_ticket");
return JsonErrorView.VIEWNAME;
}
} else {
m.addAttribute(HttpCodeView.CODE, HttpStatus.BAD_REQUEST);
m.addAttribute(JsonErrorView.ERROR_MESSAGE, "Missing JSON elements.");
return JsonErrorView.VIEWNAME;
}
} else {
m.addAttribute(HttpCodeView.CODE, HttpStatus.BAD_REQUEST);
m.addAttribute(JsonErrorView.ERROR_MESSAGE, "Malformed JSON request.");
return JsonErrorView.VIEWNAME;
}
}
}
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