| // Copyright (C) 2010 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.container; |
| |
| import com.google.gerrit.extensions.registration.DynamicItem; |
| import com.google.gerrit.httpd.WebSession; |
| import com.google.gerrit.server.account.AccountException; |
| import com.google.gerrit.server.account.AccountManager; |
| import com.google.gerrit.server.account.AuthRequest; |
| import com.google.gerrit.server.account.AuthResult; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.security.cert.X509Certificate; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| |
| @Singleton |
| class HttpsClientSslCertAuthFilter implements Filter { |
| private static final Pattern REGEX_USERID = Pattern.compile("CN=([^,]*)"); |
| |
| private final DynamicItem<WebSession> webSession; |
| private final AccountManager accountManager; |
| private final AuthRequest.Factory authRequestFactory; |
| |
| @Inject |
| HttpsClientSslCertAuthFilter( |
| final DynamicItem<WebSession> webSession, |
| AccountManager accountManager, |
| final AuthRequest.Factory authRequestFactory) { |
| this.webSession = webSession; |
| this.accountManager = accountManager; |
| this.authRequestFactory = authRequestFactory; |
| } |
| |
| @Override |
| public void destroy() {} |
| |
| @Override |
| public void doFilter(ServletRequest req, ServletResponse rsp, FilterChain chain) |
| throws IOException, ServletException { |
| X509Certificate[] certs = |
| (X509Certificate[]) req.getAttribute("javax.servlet.request.X509Certificate"); |
| if (certs == null || certs.length == 0) { |
| throw new ServletException( |
| "Couldn't get the attribute javax.servlet.request.X509Certificate from the request"); |
| } |
| String name = certs[0].getSubjectDN().getName(); |
| Matcher m = REGEX_USERID.matcher(name); |
| String userName; |
| if (m.find()) { |
| userName = m.group(1); |
| } else { |
| throw new ServletException("Couldn't extract username from your certificate"); |
| } |
| final AuthRequest areq = authRequestFactory.createForUser(userName); |
| final AuthResult arsp; |
| try { |
| arsp = accountManager.authenticate(areq); |
| } catch (AccountException e) { |
| throw new ServletException("Unable to authenticate user \"" + userName + "\"", e); |
| } |
| webSession.get().login(arsp, true); |
| chain.doFilter(req, rsp); |
| } |
| |
| @Override |
| public void init(FilterConfig arg0) throws ServletException {} |
| } |