| // Copyright (C) 2012 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; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import com.google.inject.servlet.ServletModule; |
| import java.io.IOException; |
| 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.HttpServletResponse; |
| import org.eclipse.jgit.lib.Config; |
| |
| /** |
| * Stores user as a request attribute and/or response header, so servlets and reverse proxies can |
| * access it outside of the request/response scope. |
| */ |
| @Singleton |
| public class GetUserFilter implements Filter { |
| |
| public static final String USER_ATTR_KEY = "User"; |
| |
| public static class GetUserFilterModule extends ServletModule { |
| |
| private final boolean reqEnabled; |
| private final boolean resEnabled; |
| |
| @Inject |
| GetUserFilterModule(@GerritServerConfig Config cfg) { |
| reqEnabled = cfg.getBoolean("http", "addUserAsRequestAttribute", true); |
| resEnabled = cfg.getBoolean("http", "addUserAsResponseHeader", false); |
| } |
| |
| @Override |
| protected void configureServlets() { |
| if (resEnabled || reqEnabled) { |
| ImmutableMap.Builder<String, String> initParams = ImmutableMap.builder(); |
| if (reqEnabled) { |
| initParams.put("reqEnabled", ""); |
| } |
| if (resEnabled) { |
| initParams.put("resEnabled", ""); |
| } |
| filter("/*").through(GetUserFilter.class, initParams.build()); |
| } |
| } |
| } |
| |
| private final Provider<CurrentUser> userProvider; |
| |
| private boolean reqEnabled; |
| private boolean resEnabled; |
| |
| @Inject |
| GetUserFilter(Provider<CurrentUser> userProvider) { |
| this.userProvider = userProvider; |
| } |
| |
| @Override |
| public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) |
| throws IOException, ServletException { |
| CurrentUser user = userProvider.get(); |
| if (user != null && user.isIdentifiedUser()) { |
| String loggableName = user.asIdentifiedUser().getLoggableName(); |
| if (reqEnabled) { |
| req.setAttribute(USER_ATTR_KEY, loggableName); |
| } |
| if (resEnabled && resp instanceof HttpServletResponse) { |
| ((HttpServletResponse) resp).addHeader(USER_ATTR_KEY, loggableName); |
| } |
| } |
| chain.doFilter(req, resp); |
| } |
| |
| @Override |
| public void destroy() {} |
| |
| @Override |
| public void init(FilterConfig arg0) { |
| reqEnabled = arg0.getInitParameter("reqEnabled") != null ? true : false; |
| resEnabled = arg0.getInitParameter("resEnabled") != null ? true : false; |
| } |
| } |