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- /*
- * SonarQube
- * Copyright (C) 2009-2019 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- package org.sonar.auth.ldap;
-
- import java.util.Map;
- import javax.naming.NamingException;
- import javax.naming.directory.InitialDirContext;
- import javax.naming.directory.SearchResult;
- import javax.security.auth.login.Configuration;
- import javax.security.auth.login.LoginContext;
- import javax.security.auth.login.LoginException;
- import org.apache.commons.lang.StringUtils;
- import org.sonar.api.security.Authenticator;
- import org.sonar.api.utils.log.Logger;
- import org.sonar.api.utils.log.Loggers;
-
- /**
- * @author Evgeny Mandrikov
- */
- public class LdapAuthenticator extends Authenticator {
-
- private static final Logger LOG = Loggers.get(LdapAuthenticator.class);
- private final Map<String, LdapContextFactory> contextFactories;
- private final Map<String, LdapUserMapping> userMappings;
-
- public LdapAuthenticator(Map<String, LdapContextFactory> contextFactories, Map<String, LdapUserMapping> userMappings) {
- this.contextFactories = contextFactories;
- this.userMappings = userMappings;
- }
-
- @Override
- public boolean doAuthenticate(Context context) {
- return authenticate(context.getUsername(), context.getPassword());
- }
-
- /**
- * Authenticate the user against LDAP servers until first success.
- * @param login The login to use.
- * @param password The password to use.
- * @return false if specified user cannot be authenticated with specified password on any LDAP server
- */
- public boolean authenticate(String login, String password) {
- for (String ldapKey : userMappings.keySet()) {
- final String principal;
- if (contextFactories.get(ldapKey).isSasl()) {
- principal = login;
- } else {
- final SearchResult result;
- try {
- result = userMappings.get(ldapKey).createSearch(contextFactories.get(ldapKey), login).findUnique();
- } catch (NamingException e) {
- LOG.debug("User {} not found in server {}: {}", login, ldapKey, e.getMessage());
- continue;
- }
- if (result == null) {
- LOG.debug("User {} not found in {}", login, ldapKey);
- continue;
- }
- principal = result.getNameInNamespace();
- }
- boolean passwordValid;
- if (contextFactories.get(ldapKey).isGssapi()) {
- passwordValid = checkPasswordUsingGssapi(principal, password, ldapKey);
- } else {
- passwordValid = checkPasswordUsingBind(principal, password, ldapKey);
- }
- if (passwordValid) {
- return true;
- }
- }
- LOG.debug("User {} not found", login);
- return false;
- }
-
- private boolean checkPasswordUsingBind(String principal, String password, String ldapKey) {
- if (StringUtils.isEmpty(password)) {
- LOG.debug("Password is blank.");
- return false;
- }
- InitialDirContext context = null;
- try {
- context = contextFactories.get(ldapKey).createUserContext(principal, password);
- return true;
- } catch (NamingException e) {
- LOG.debug("Password not valid for user {} in server {}: {}", principal, ldapKey, e.getMessage());
- return false;
- } finally {
- ContextHelper.closeQuietly(context);
- }
- }
-
- private boolean checkPasswordUsingGssapi(String principal, String password, String ldapKey) {
- // Use our custom configuration to avoid reliance on external config
- Configuration.setConfiguration(new Krb5LoginConfiguration());
- LoginContext lc;
- try {
- lc = new LoginContext(getClass().getName(), new CallbackHandlerImpl(principal, password));
- lc.login();
- } catch (LoginException e) {
- // Bad username: Client not found in Kerberos database
- // Bad password: Integrity check on decrypted field failed
- LOG.debug("Password not valid for {} in server {}: {}", principal, ldapKey, e.getMessage());
- return false;
- }
- try {
- lc.logout();
- } catch (LoginException e) {
- LOG.warn("Logout fails", e);
- }
- return true;
- }
-
- }
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