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/*
 * SonarQube, open source software quality management tool.
 * Copyright (C) 2008-2014 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * SonarQube 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.
 *
 * SonarQube 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.api.security;

import com.google.common.base.Preconditions;
import org.sonar.api.ServerExtension;

import javax.annotation.Nullable;
import javax.servlet.http.HttpServletRequest;

/**
 * @see SecurityRealm
 * @since 3.1
 */
public abstract class Authenticator implements ServerExtension {

  /**
   * @return true if user was successfully authenticated with specified credentials, false otherwise
   * @throws RuntimeException in case of unexpected error such as connection failure
   */
  public abstract boolean doAuthenticate(Context context);

  public static final class Context {
    private String username;
    private String password;
    private HttpServletRequest request;

    public Context(@Nullable String username, @Nullable String password, HttpServletRequest request) {
      Preconditions.checkNotNull(request);
      this.request = request;
      this.username = username;
      this.password = password;
    }

    /**
     * Username can be null, for example when using CAS.
     */
    public String getUsername() {
      return username;
    }

    /**
     * Password can be null, for example when using CAS.
     */
    public String getPassword() {
      return password;
    }

    public HttpServletRequest getRequest() {
      return request;
    }
  }
}