/*
===========================================================================
Copyright (c) 2012 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.provider;
import java.io.InputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.brickred.socialauth.AbstractProvider;
import org.brickred.socialauth.AuthProvider;
import org.brickred.socialauth.Contact;
import org.brickred.socialauth.Permission;
import org.brickred.socialauth.Profile;
import org.brickred.socialauth.exception.AccessTokenExpireException;
import org.brickred.socialauth.exception.SocialAuthException;
import org.brickred.socialauth.exception.UserDeniedPermissionException;
import org.brickred.socialauth.oauthstrategy.OAuth2;
import org.brickred.socialauth.oauthstrategy.OAuthStrategyBase;
import org.brickred.socialauth.util.AccessGrant;
import org.brickred.socialauth.util.Constants;
import org.brickred.socialauth.util.OAuthConfig;
import org.brickred.socialauth.util.Response;
public class GenericOAuth2Provider extends AbstractProvider implements
AuthProvider, Serializable {
private static final long serialVersionUID = 1L;
private final Log LOG = LogFactory.getLog(GenericOAuth2Provider.class);
private Permission scope;
private OAuthConfig config;
private AccessGrant accessGrant;
private OAuthStrategyBase authenticationStrategy;
private final Map<String, String> ENDPOINTS;
public GenericOAuth2Provider(final OAuthConfig providerConfig)
throws Exception {
config = providerConfig;
if (config.getCustomPermissions() != null) {
scope = Permission.CUSTOM;
}
ENDPOINTS = new HashMap<String, String>();
ENDPOINTS.put(Constants.OAUTH_AUTHORIZATION_URL,
providerConfig.getAuthenticationUrl());
ENDPOINTS.put(Constants.OAUTH_ACCESS_TOKEN_URL,
providerConfig.getAccessTokenUrl());
authenticationStrategy = new OAuth2(config, ENDPOINTS);
authenticationStrategy.setPermission(scope);
authenticationStrategy.setScope(getScope());
}
/**
* Stores access grant for the provider
*
* @param accessGrant
* It contains the access token and other information
* @throws AccessTokenExpireException
*/
@Override
public void setAccessGrant(final AccessGrant accessGrant)
throws AccessTokenExpireException {
this.accessGrant = accessGrant;
authenticationStrategy.setAccessGrant(accessGrant);
}
/**
* This is the most important action. It redirects the browser to an
* appropriate URL which will be used for authentication with the provider
* that has been set using setId()
*
*/
@Override
public String getLoginRedirectURL(final String successUrl) throws Exception {
return authenticationStrategy.getLoginRedirectURL(successUrl);
}
/**
* Verifies the user when the external provider redirects back to our
* application.
*
*
* @param requestParams
* request parameters, received from the provider
* @return Profile object containing the profile information
* @throws Exception
*/
@Override
public Profile verifyResponse(final Map<String, String> requestParams)
throws Exception {
return doVerifyResponse(requestParams);
}
private Profile doVerifyResponse(final Map<String, String> requestParams)
throws Exception {
LOG.info("Retrieving Access Token in verify response function");
if (requestParams.get("error_reason") != null
&& "user_denied".equals(requestParams.get("error_reason"))) {
throw new UserDeniedPermissionException();
}
accessGrant = authenticationStrategy.verifyResponse(requestParams);
if (accessGrant != null) {
LOG.debug("Access grant available");
return null;
} else {
throw new SocialAuthException("Access token not found");
}
}
/**
* Updates the status on the chosen provider if available. This may not be
* implemented for all providers.
*
* @param msg
* Message to be shown as user's status
* @throws Exception
*/
@Override
public Response updateStatus(final String msg) throws Exception {
LOG.warn("WARNING: Not implemented for GenericOauth2Provider");
throw new SocialAuthException(
"Update Status is not implemented for GenericOauth2Provider");
}
@Override
public List<Contact> getContactList() throws Exception {
LOG.warn("WARNING: Not implemented for GenericOauth2Provider");
throw new SocialAuthException(
"Get Contacts is not implemented for GenericOauth2Provider");
}
@Override
public Profile getUserProfile() throws Exception {
LOG.warn("WARNING: Not implemented for GenericOauth2Provider");
throw new SocialAuthException(
"Get Profile is not implemented for GenericOauth2Provider");
}
/**
* Logout
*/
@Override
public void logout() {
accessGrant = null;
authenticationStrategy.logout();
}
@Override
public void setPermission(final Permission p) {
LOG.debug("Permission requested : " + p.toString());
this.scope = p;
authenticationStrategy.setPermission(this.scope);
authenticationStrategy.setScope(getScope());
}
/**
* Makes HTTP request to a given URL.It attaches access token in URL.
*
* @param url
* URL to make HTTP request.
* @param methodType
* Method type can be GET, POST or PUT
* @param params
* Not using this parameter in Google API function
* @param headerParams
* Parameters need to pass as Header Parameters
* @param body
* Request Body
* @return Response object
* @throws Exception
*/
@Override
public Response api(final String url, final String methodType,
final Map<String, String> params,
final Map<String, String> headerParams, final String body)
throws Exception {
LOG.info("Calling api function for url : " + url);
Response response = null;
try {
response = authenticationStrategy.executeFeed(url, methodType,
params, headerParams, body);
} catch (Exception e) {
throw new SocialAuthException(
"Error while making request to URL : " + url, e);
}
return response;
}
@Override
public AccessGrant getAccessGrant() {
return accessGrant;
}
@Override
public String getProviderId() {
return config.getId();
}
@Override
public Response uploadImage(final String message, final String fileName,
final InputStream inputStream) throws Exception {
LOG.warn("WARNING: Not implemented for GenericOauth2Provider");
throw new SocialAuthException(
"Upload Image is not implemented for GenericOauth2Provider");
}
private String getScope() {
if (Permission.CUSTOM.equals(scope)
&& config.getCustomPermissions() != null) {
return config.getCustomPermissions();
} else {
return null;
}
}
@Override
protected List<String> getPluginsList() {
List<String> list = new ArrayList<String>();
if (config.getRegisteredPlugins() != null
&& config.getRegisteredPlugins().length > 0) {
list.addAll(Arrays.asList(config.getRegisteredPlugins()));
}
return list;
}
@Override
protected OAuthStrategyBase getOauthStrategy() {
return authenticationStrategy;
}
}