<?php
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
/*********************************************************************************
 * SugarCRM is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2011 SugarCRM Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 * 
 * 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 Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with
 * this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo. If the display of the logo is not reasonably feasible for
 * technical reasons, the Appropriate Legal Notices must display the words
 * "Powered by SugarCRM".
 ********************************************************************************/


/**
 * This file is where the user authentication occurs. No redirection should happen in this file.
 *
 */
class SugarAuthenticateUser{
	
	/**
	 * Does the actual authentication of the user and returns an id that will be used 
	 * to load the current user (loadUserOnSession)
	 *
	 * @param STRING $name
	 * @param STRING $password
	 * @param STRING $fallback - is this authentication a fallback from a failed authentication
	 * @return STRING id - used for loading the user
	 */
	function authenticateUser($name, $password, $fallback=false) {
		$name = $GLOBALS['db']->quote($name);
		$password = $GLOBALS['db']->quote($password);
		$query = "SELECT * from users where user_name='$name' AND user_hash='$password' AND (portal_only IS NULL OR portal_only !='1') AND (is_group IS NULL OR is_group !='1') AND status !='Inactive'";
		$result =$GLOBALS['db']->limitQuery($query,0,1,false);
		$row = $GLOBALS['db']->fetchByAssoc($result);
		
		// set the ID in the seed user.  This can be used for retrieving the full user record later
		//if it's falling back on Sugar Authentication after the login failed on an external authentication return empty if the user has external_auth_disabled for them
		if (empty ($row) || ($fallback && !empty($row['external_auth_only']))) {
			return '';
		} else {
			return $row['id'];
		}
	}
	/**
	 * Checks if a user is a sugarLogin user 
	 * which implies they should use the sugar authentication to login
	 *
	 * @param STRING $name
	 * @param STRIUNG $password
	 * @return boolean
	 */
	function isSugarLogin($name, $password){
		$password = SugarAuthenticate::encodePassword($password);
		$name = $GLOBALS['db']->quote($name);
		$password = $GLOBALS['db']->quote($password);
		$query = "SELECT * from users where user_name='$name' AND user_hash='$password' AND (portal_only IS NULL OR portal_only !='1') AND (is_group IS NULL OR is_group !='1') AND status !='Inactive' AND sugar_login=1";
		$result =$GLOBALS['db']->limitQuery($query,0,1,false);
		$row = $GLOBALS['db']->fetchByAssoc($result);
		if($row)return true;
		return false;
	}
	
	/**
	 * this is called when a user logs in 
	 *
	 * @param STRING $name
	 * @param STRING $password
	 * @param STRING $fallback - is this authentication a fallback from a failed authentication
	 * @return boolean
	 */
	function loadUserOnLogin($name, $password, $fallback = false, $PARAMS = array()) {
		global $login_error;

		$GLOBALS['log']->debug("Starting user load for ". $name);
		if(empty($name) || empty($password)) return false;
		$user_hash = $password;
		$passwordEncrypted = false;
		if (!empty($PARAMS) && isset($PARAMS['passwordEncrypted']) && $PARAMS['passwordEncrypted']) {
			$passwordEncrypted = true;
		}// if
		if (!$passwordEncrypted) {
			$user_hash = SugarAuthenticate::encodePassword($password);
		} // if
		$user_id = $this->authenticateUser($name, $user_hash, $fallback);
		if(empty($user_id)) {
			$GLOBALS['log']->fatal('SECURITY: User authentication for '.$name.' failed');
			return false;
		}
		$this->loadUserOnSession($user_id);
		return true;
	}
	/**
	 * Loads the current user bassed on the given user_id 
	 *
	 * @param STRING $user_id
	 * @return boolean
	 */
	function loadUserOnSession($user_id=''){
		if(!empty($user_id)){
			$_SESSION['authenticated_user_id'] = $user_id;
		}
		
		if(!empty($_SESSION['authenticated_user_id']) || !empty($user_id)){
			$GLOBALS['current_user'] = new User();
			if($GLOBALS['current_user']->retrieve($_SESSION['authenticated_user_id'])){
				
				return true;
			}
		}
		return false;
		
	}

}

?>