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Delegates authentication to Atlassian Crowd.
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/*
 * Sonar Crowd Plugin
 * Copyright (C) 2009 SonarSource
 * [email protected]
 *
 * 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  02
 */

package org.sonar.plugins.crowd;

import com.atlassian.crowd.exception.*;
import com.atlassian.crowd.service.client.CrowdClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.api.security.LoginPasswordAuthenticator;

/**
 * @author Evgeny Mandrikov
 */
public class CrowdAuthenticator implements LoginPasswordAuthenticator {

  private static final Logger LOG = LoggerFactory.getLogger(CrowdAuthenticator.class);

  private final CrowdClient client;

  public CrowdAuthenticator(CrowdClient client) {
    this.client = client;
  }

  @Override
  public void init() {
    // noop
  }

  @Override
  public boolean authenticate(String login, String password) {
    try {
      client.authenticateUser(login, password);
      return true;
    } catch (UserNotFoundException e) {
      LOG.debug("User {} not found", login);
      return false;
    } catch (InactiveAccountException e) {
      LOG.debug("User {} is not active", login);
      return false;
    } catch (ExpiredCredentialException e) {
      LOG.debug("Credentials of user {} have expired", login);
      return false;
    } catch (ApplicationPermissionException e) {
      LOG.error("The application is not permitted to perform the requested operation"
        + " on the crowd server", e);
      return false;
    } catch (InvalidAuthenticationException e) {
      LOG.debug("Invalid credentials for user {}", login);
      return false;
    } catch (OperationFailedException e) {
      LOG.error("Unable to authenticate user " + login, e);
      return false;
    }
  }
}