content: /*
   ===========================================================================
   Copyright (c) 2010 BrickRed Technologies Limited
  
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sub-license, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:
  
   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.
  
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
   ===========================================================================
  
   */
  package org.brickred.socialauth.util;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.brickred.socialauth.Profile;
  
  /**
   * 
   * @author tarunn@brickred.com
   * 
   */
  public class OpenIdConsumer {
  
  	private static final Log LOG = LogFactory.getLog(OpenIdConsumer.class);
  	private static Map<String, String> associationMap;
  	private static Map<String, String> requestTokenMap;
  	public static final String OPENID_REQUEST_TOKEN = "openid.ext2.request_token";
  	static {
  		associationMap = new HashMap<String, String>();
  		associationMap.put("openid.ns", "http://specs.openid.net/auth/2.0");
  		associationMap.put("openid.mode", "associate");
  		associationMap.put("openid.assoc_type", "HMAC-SHA1");
  		associationMap.put("openid.session_type", "no-encryption");
  
  		requestTokenMap = new HashMap<String, String>();
  		requestTokenMap.put("openid.ns", "http://specs.openid.net/auth/2.0");
  		requestTokenMap.put("openid.claimed_id",
  				"http://specs.openid.net/auth/2.0/identifier_select");
  		requestTokenMap.put("openid.identity",
  				"http://specs.openid.net/auth/2.0/identifier_select");
  		requestTokenMap.put("openid.mode", "checkid_setup");
  		requestTokenMap.put("openid.ns.pape",
  				"http://specs.openid.net/extensions/pape/1.0");
  		requestTokenMap.put("openid.ns.max_auth_age", "0");
  		requestTokenMap.put("openid.ns.ax", "http://openid.net/srv/ax/1.0");
  		requestTokenMap.put("openid.ax.mode", "fetch_request");
  		requestTokenMap.put("openid.ax.type.country",
  				"http://axschema.org/contact/country/home");
  		requestTokenMap.put("openid.ax.type.email",
  				"http://axschema.org/contact/email");
  		requestTokenMap.put("openid.ax.type.firstname",
  				"http://axschema.org/namePerson/first");
  		requestTokenMap.put("openid.ax.type.language",
  				"http://axschema.org/pref/language");
  		requestTokenMap.put("openid.ax.type.lastname",
  				"http://axschema.org/namePerson/last");
  		requestTokenMap.put("openid.ax.required",
  				"country,email,firstname,language,lastname");
  		// ADDING OAUTH PROTOCOLS
  		requestTokenMap.put("openid.ns.ext2",
  				"http://specs.openid.net/extensions/oauth/1.0");
  
  	}
  
  	/**
  	 * Provides an association URL. An association between the Relying Party and
  	 * the OpenID Provider establishes a shared secret between them, which is
  	 * used to verify subsequent protocol messages and reduce round trips.
  	 * 
  	 * @param url
  	 * @return Association URL
  	 * @throws Exception
  	 */
  	public static String getAssociationURL(final String url) throws Exception {
  		String param = HttpUtil.buildParams(associationMap);
  		char separator = url.indexOf('?') == -1 ? '?' : '&';
  		return url + separator + param;
  	}
  
  	/**
  	 * It obtains the request token. The Request Token is a temporary token used
  	 * to initiate User authorization.
  	 * 
  	 * @param requestTokenUrl
  	 *            the Request Token URL
  	 * @param returnTo
  	 *            Callback URL
  	 * @param realm
  	 *            Realm
  	 * @param assocHandle
  	 * @param consumerURL
  	 * @param scope
  	 * @return Generated Request Token URL
  	 * @throws Exception
  	 */
  	public static String getRequestTokenURL(final String requestTokenUrl,
  			final String returnTo, final String realm,
  			final String assocHandle, final String consumerURL,
  			final String scope) throws Exception {
  		Map<String, String> params = new HashMap<String, String>();
  		params.putAll(requestTokenMap);
  		params.put("openid.return_to", returnTo);
  		params.put("openid.realm", realm);
  		params.put("openid.assoc_handle", assocHandle);
  		params.put("openid.ext2.consumer", consumerURL);
  		if (scope != null) {
  			params.put("openid.ext2.scope", scope);
  		}
  		String paramStr = HttpUtil.buildParams(params);
  		char separator = requestTokenUrl.indexOf('?') == -1 ? '?' : '&';
  		String url = requestTokenUrl + separator + paramStr;
  		LOG.debug("Request Token URL : " + url);
  		return url;
  	}
  
  	/**
  	 * Parses the user info from request
  	 * 
  	 * @param requestParams
  	 *            request parameters map
  	 * @return User Profile
  	 */
  	public static Profile getUserInfo(final Map<String, String> requestParams) {
  		Profile p = new Profile();
  		p.setEmail(requestParams.get("openid.ext1.value.email"));
  		p.setFirstName(requestParams.get("openid.ext1.value.firstname"));
  		p.setLastName(requestParams.get("openid.ext1.value.lastname"));
  		p.setCountry(requestParams.get("openid.ext1.value.country"));
  		p.setLanguage(requestParams.get("openid.ext1.value.language"));
  		p.setValidatedId(requestParams.get("openid.identity"));
  		return p;
  	}
  }
  