| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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 com.google.gerrit.httpd.auth.openid; |
| |
| import com.google.common.collect.Iterables; |
| import com.google.gerrit.extensions.auth.oauth.OAuthServiceProvider; |
| import com.google.gerrit.extensions.registration.DynamicMap; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| |
| import java.io.IOException; |
| import java.util.SortedMap; |
| import java.util.SortedSet; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| |
| /** OAuth web filter uses active OAuth session to perform OAuth requests */ |
| @Singleton |
| class OAuthWebFilterOverOpenID implements Filter { |
| static final String GERRIT_LOGIN = "/login"; |
| |
| private final Provider<OAuthSessionOverOpenID> oauthSessionProvider; |
| private final DynamicMap<OAuthServiceProvider> oauthServiceProviders; |
| private OAuthServiceProvider ssoProvider; |
| |
| @Inject |
| OAuthWebFilterOverOpenID(DynamicMap<OAuthServiceProvider> oauthServiceProviders, |
| Provider<OAuthSessionOverOpenID> oauthSessionProvider) { |
| this.oauthServiceProviders = oauthServiceProviders; |
| this.oauthSessionProvider = oauthSessionProvider; |
| } |
| |
| @Override |
| public void init(FilterConfig filterConfig) throws ServletException { |
| pickSSOServiceProvider(); |
| } |
| |
| @Override |
| public void destroy() { |
| } |
| |
| @Override |
| public void doFilter(ServletRequest request, ServletResponse response, |
| FilterChain chain) throws IOException, ServletException { |
| HttpServletRequest httpRequest = (HttpServletRequest) request; |
| HttpServletResponse httpResponse = (HttpServletResponse) response; |
| |
| OAuthSessionOverOpenID oauthSession = oauthSessionProvider.get(); |
| OAuthServiceProvider service = ssoProvider == null |
| ? oauthSession.getServiceProvider() |
| : ssoProvider; |
| |
| if (isGerritLogin(httpRequest) || oauthSession.isOAuthFinal(httpRequest)) { |
| if (service == null) { |
| throw new IllegalStateException("service is unknown"); |
| } |
| oauthSession.setServiceProvider(service); |
| oauthSession.login(httpRequest, httpResponse, service); |
| } else { |
| chain.doFilter(httpRequest, response); |
| } |
| } |
| |
| private void pickSSOServiceProvider() { |
| SortedSet<String> plugins = oauthServiceProviders.plugins(); |
| if (plugins.size() == 1) { |
| SortedMap<String, Provider<OAuthServiceProvider>> services = |
| oauthServiceProviders.byPlugin(Iterables.getOnlyElement(plugins)); |
| if (services.size() == 1) { |
| ssoProvider = Iterables.getOnlyElement(services.values()).get(); |
| } |
| } |
| } |
| |
| private static boolean isGerritLogin(HttpServletRequest request) { |
| return request.getRequestURI().indexOf(GERRIT_LOGIN) >= 0; |
| } |
| } |