pandorafms/pandora_console/include/auth/mysql.php

<?php

// Pandora FMS - http://pandorafms.com
// ==================================================
// Copyright (c) 2005-2009 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org for full contribution list

// 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; version 2

// 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 General Public License for more details.

/**
 * @package Include/auth
 */

if (!isset ($config)) {
	die ('
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<title>Pandora FMS - The Flexible Monitoring System - Console error</title>
		<meta http-equiv="expires" content="0">
		<meta http-equiv="content-type" content="text/html; charset=utf8">
		<meta name="resource-type" content="document">
		<meta name="distribution" content="global">
		<meta name="author" content="Sancho Lerena">
		<meta name="copyright" content="This is GPL software. Created by Sancho Lerena and others">
		<meta name="keywords" content="pandora, monitoring, system, GPL, software">
		<meta name="robots" content="index, follow">
		<link rel="icon" href="../../images/pandora.ico" type="image/ico">
		<link rel="stylesheet" href="../styles/pandora.css" type="text/css">
	</head>
	<body>
		<div id="main" style="float:left; margin-left: 100px">
			<div align="center">
				<div id="login_f">
					<h1 id="log_f" class="error">You cannot access this file</h1>
					<div>
						<img src="../../images/pandora_logo.png" border="0" />
					</div>
					<div class="msg">
						<span class="error">
							<b>ERROR:</b> You can\'t access this file directly!
						</span>
					</div>
				</div>
			</div>
		</div>
	</body>
</html>
');
}

include_once($config['homedir'] . "/include/functions_profile.php");
enterprise_include ('include/auth/mysql.php');

$config["user_can_update_info"] = true;
$config["user_can_update_password"] = true;
$config["admin_can_add_user"] = true;
$config["admin_can_delete_user"] = true;
$config["admin_can_disable_user"] = false; //currently not implemented
$config["admin_can_make_admin"] = true;

/**
 * process_user_login accepts $login and $pass and handles it according to current authentication scheme
 *
 * @param string $login 
 * @param string $pass
 * @param boolean $api
 *
 * @return mixed False in case of error or invalid credentials, the username in case it's correct.
 */
function process_user_login ($login, $pass, $api = false) {
	global $config, $mysql_cache;
	
	// Always authenticate admins against the local database
	if (strtolower ($config["auth"]) == 'mysql' || is_user_admin ($login)) {
		return process_user_login_local ($login, $pass, $api);
	}
	else {
		$login_remote = process_user_login_remote ($login, $pass, $api);
		if ($login_remote == false && $config['fallback_local_auth'] == '1') {
			return process_user_login_local ($login, $pass, $api);
		}
		else {
			return $login_remote;
		}
	}

	return false;
}

function process_user_login_local ($login, $pass, $api = false) {
	global $config, $mysql_cache;

	// Connect to Database
	switch ($config["dbtype"]) {
		case "mysql":
			if (!$api) {
				$sql = sprintf ("SELECT `id_user`, `password`
					FROM `tusuario`
					WHERE `id_user` = '%s' AND `not_login` = 0
						AND `disabled` = 0", $login);
			}
			else {
				$sql = sprintf ("SELECT `id_user`, `password`
					FROM `tusuario`
					WHERE `id_user` = '%s'
						AND `disabled` = 0", $login);
			}
			break;
		case "postgresql":
			if (!$api) {
				$sql = sprintf ('SELECT "id_user", "password"
					FROM "tusuario"
					WHERE "id_user" = \'%s\' AND "not_login" = 0
						AND "disabled" = 0', $login);
			}
			else {
				$sql = sprintf ('SELECT "id_user", "password"
					FROM "tusuario"
					WHERE "id_user" = \'%s\'
						AND "disabled" = 0', $login);
			}
			break;
		case "oracle":
			if (!$api) {
				$sql = sprintf ('SELECT id_user, password
					FROM tusuario
					WHERE id_user = \'%s\' AND not_login = 0
						AND disabled = 0', $login);
			}
			else {
				$sql = sprintf ('SELECT id_user, password
					FROM tusuario
					WHERE id_user = \'%s\'
						AND disabled = 0', $login);
			}
			break;
	}
	$row = db_get_row_sql ($sql);
	
	//Check that row exists, that password is not empty and that password is the same hash
	if ($row !== false && $row["password"] !== md5 ("")
		&& $row["password"] == md5 ($pass)) {
		// Login OK
		// Nick could be uppercase or lowercase (select in MySQL
		// is not case sensitive)
		// We get DB nick to put in PHP Session variable,
		// to avoid problems with case-sensitive usernames.
		// Thanks to David Muñiz for Bug discovery :)
		return $row["id_user"];
	}
	else {
		if (!user_can_login($login)) {
			$mysql_cache["auth_error"] = "User only can use the API.";
			$config["auth_error"] = "User only can use the API.";
		}
		else {
			$mysql_cache["auth_error"] = "User not found in database or incorrect password";
			$config["auth_error"] = "User not found in database or incorrect password";
		}
	}
	
	return false;
}

function process_user_login_remote ($login, $pass, $api = false) {
	global $config, $mysql_cache;
	
	// Remote authentication
	switch ($config["auth"]) {
		// LDAP
		case 'ldap':
			if (ldap_process_user_login ($login, $pass) === false) {
				$config["auth_error"] = "User not found in database or incorrect password";
				return false;
			}
			break;
			
		// Active Directory
		case 'ad':
			if (enterprise_hook ('ad_process_user_login', array ($login, $pass)) === false) {
				$config["auth_error"] = "User not found in database or incorrect password";
				return false;
			}
			break;
		
		// Remote Pandora FMS
		case 'pandora':
			if (enterprise_hook ('remote_pandora_process_user_login', array ($login, $pass)) === false) {
				$config["auth_error"] = "User not found in database or incorrect password";
				return false;
			}
			break;
		
		// Remote Integria
		case 'integria':
			if (enterprise_hook ('remote_integria_process_user_login', array ($login, $pass)) === false) {
				$config["auth_error"] = "User not found in database or incorrect password";
				return false;
			}
			break;
		
		// Unknown authentication method
		default:
			$config["auth_error"] = "User not found in database 
					or incorrect password";
			return false;
			break;
	}
	
	// Authentication ok, check if the user exists in the local database
	if (is_user ($login)) {
		if (!user_can_login($login)) {
			return false;
		}
		
		if (($config["auth"] === 'ad') &&
			(isset($config['ad_advanced_config']) && $config['ad_advanced_config'])) {
			
			$return = enterprise_hook ('prepare_permissions_groups_of_user_ad',
				array ($login, $pass, false, true, defined('METACONSOLE')));

			if ($return === "error_permissions") {
				$config["auth_error"] =
					__("Problems with configuration permissions. Please contact with Administrator");
				return false;
			}
			else {
				if ($return === "permissions_changed") {
					$config["auth_error"] =
						__("Your permissions have changed. Please, login again.");
					return false;
				}
			}
		}
		elseif (($config["auth"] === 'ldap') &&
			(isset($config['ldap_advanced_config']) && $config['ldap_advanced_config'])) {

			$return = enterprise_hook ('prepare_permissions_groups_of_user_ldap',
				array ($login, $pass, false, true, defined('METACONSOLE')));
			
			if ($return === "error_permissions") {
				$config["auth_error"] =
					__("Problems with configuration permissions. Please contact with Administrator");
				return false;
			}
			else {
				if ($return === "permissions_changed") {
					$config["auth_error"] =
						__("Your permissions have changed. Please, login again.");
					return false;
				}
			}

			change_local_user_pass_ldap ($login, $pass);
		}

		return $login;
	}
	
	// The user does not exist and can not be created
	if ($config['autocreate_remote_users'] == 0 || is_user_blacklisted ($login)) {
		$config["auth_error"] = __("Ooops User not found in 
				database or incorrect password");
		
		return false;
	}
	
	if ($config["auth"] === 'ad' && 
		(isset($config['ad_advanced_config']) && 
			$config['ad_advanced_config'])) {
		
		
		if ( defined('METACONSOLE') ) {
			enterprise_include_once('include/functions_metaconsole.php');
			enterprise_include_once ('meta/include/functions_groups_meta.php');
			
			$return = groups_meta_synchronizing();
			
			if ($return["group_create_err"] > 0  || $return["group_update_err"] > 0) {
				$config["auth_error"] = __('Fail the group synchronizing');
				return false;
			}
			
			$return = meta_tags_synchronizing();
			if ($return['tag_create_err'] > 0 || $return['tag_update_err'] > 0) {
				$config["auth_error"] = __('Fail the tag synchronizing');
				return false;
			}
		}
		
		// Create the user
		if (enterprise_hook ('prepare_permissions_groups_of_user_ad',
				array($login,
					$pass,
					array ('fullname' => $login, 
						'comments' => 'Imported from ' . $config['auth']),
					false, defined('METACONSOLE'))) === false) {
			
			$config["auth_error"] = __("User not found in database 
					or incorrect password");
					
			return false;
		}
	}
	elseif ($config["auth"] === 'ldap' && 
		(isset($config['ldap_advanced_config']) && 
			$config['ldap_advanced_config'])) {
		if ( defined('METACONSOLE') ) {
			enterprise_include_once('include/functions_metaconsole.php');
			enterprise_include_once ('meta/include/functions_groups_meta.php');
			
			$return = groups_meta_synchronizing();
			
			if ($return["group_create_err"] > 0  || $return["group_update_err"] > 0) {
				$config["auth_error"] = __('Fail the group synchronizing');
				return false;
			}
			
			$return = meta_tags_synchronizing();
			if ($return['tag_create_err'] > 0 || $return['tag_update_err'] > 0) {
				$config["auth_error"] = __('Fail the tag synchronizing');
				return false;
			}
		}
		
		// Create the user
		if (enterprise_hook ('prepare_permissions_groups_of_user_ldap',
				array($login,
					$pass,
					array ('fullname' => $login, 
						'comments' => 'Imported from ' . $config['auth']),
					false, defined('METACONSOLE'))) === false) {
			
			$config["auth_error"] = __("User not found in database 
					or incorrect password");
					
			return false;
		}
	}
	else {
		
		$user_info = array ('fullname' => $login, 
				'comments' => 'Imported from ' . $config['auth']);
		if ( is_metaconsole() && $config["auth"] === 'ad')
			$user_info['metaconsole_access_node'] = $config['ad_adv_user_node'];
		
		// Create the user in the local database
		if (create_user ($login, $pass, $user_info ) === false) {
			$config["auth_error"] = __("User not found in database or incorrect password");
			return false;
		}
		
		profile_create_user_profile ($login, $config['default_remote_profile'], 
			$config['default_remote_group'], false, $config['default_assign_tags']);
		//TODO: Check the creation in the nodes
		if ( is_metaconsole() ) {
			enterprise_include_once('include/functions_metaconsole.php');
			enterprise_include_once ('meta/include/functions_groups_meta.php');
			
			$return = groups_meta_synchronizing();
			
			if ($return["group_create_err"] > 0  || $return["group_update_err"] > 0) {
				$config["auth_error"] = __('Fail the group synchronizing');
				return false;
			}
			
			$return = meta_tags_synchronizing();
			if ($return['tag_create_err'] > 0 || $return['tag_update_err'] > 0) {
				$config["auth_error"] = __('Fail the tag synchronizing');
				return false;
			}
			
			$servers = metaconsole_get_servers();
			foreach ($servers as $server) {
				$perfil_maestro = db_get_row('tperfil',
					'id_perfil', $config['default_remote_profile']);
				
				if (metaconsole_connect($server) == NOERR ) {
					
					if (!profile_exist($perfil_maestro['name'])) {
						unset($perfil_maestro['id_perfil']);
						$id_profile = db_process_sql_insert('tperfil', $perfil_maestro);
					}
					else {
						$id_profile = db_get_value('id_perfil', 'tperfil', 'name', $perfil_maestro['name']);
					}
					
					if ($config["auth"] === 'ad') {
						unset($user_info['metaconsole_access_node']);
						$user_info['not_login'] = (int) !$config['ad_adv_user_node'];
					}
					
					if (create_user ($login, $pass, $user_info) === false)
						continue;
					profile_create_user_profile ($login, $id_profile, 
						$config['default_remote_group'], false, $config['default_assign_tags']);
				}
				
				metaconsole_restore_db();
			}
		}
	}
	
	return $login;
}

/** 
 * Checks if a user is administrator.
 * 
 * @param string User id.
 * 
 * @return bool True is the user is admin
 */
function is_user_admin ($id_user) {
	$is_admin = (bool) db_get_value ('is_admin', 'tusuario', 'id_user', $id_user);
	
	return $is_admin;
}


/**
 * Get the user id field on a mixed structure.
 *
 * This function is needed to make auth system more compatible and independant.
 *
 * @param mixed User structure to get id. It might be a row returned from
 * tusuario or tusuario_perfil. If it's not a row, the int value is returned.
 *
 * @return int User id of the mixed parameter.
 */
function get_user_id ($user) {
	if (is_array ($user)) {
		if (isset ($user['id_user']))
			return $user['id_user'];
		elseif (isset ($user['id_usuario']))
			return $user['id_usuario'];
		else
			return false;
	}
	else {
		return $user;
	}
}

/** 
 * Check is a user exists in the system
 * 
 * @param mixed User id.
 * 
 * @return bool True if the user exists.
 */
function is_user ($user) {
	$user = db_get_row('tusuario', 'id_user', get_user_id ($user));
	
	if (! $user)
		return false;
	
	return true;
}

function user_can_login($user) {
	$not_login = db_get_value('not_login', 'tusuario', 'id_user', $user);
	
	if ($not_login != 0) {
		return false;
	}
	
	return true;
}

/** 
 * Gets the users real name
 * 
 * @param mixed User id.
 * 
 * @return string The users full name
 */
function get_user_fullname ($user) {
	return (string) db_get_value ('fullname', 'tusuario', 'id_user', get_user_id ($user));
}

/** 
 * Gets the users email
 * 
 * @param mixed User id.
 * 
 * @return string The users email address
 */
function get_user_email ($user) {
	return (string) db_get_value ('email', 'tusuario', 'id_user', get_user_id ($user));
}

/**
 * Gets a Users info
 * 
 * @param mixed User id
 *
 * @return mixed An array of users
 */
function get_user_info ($user) {
	return db_get_row ("tusuario", "id_user", get_user_id ($user));
}

/**
 * Get a list of all users in an array [username] => array (userinfo)
 * We can't simplify this because some auth schemes (like LDAP) automatically (or it's at least cheaper to) return all the information
 * Functions like get_user_info allow selection of specifics (in functions_db)
 *
 * @param string Field to order by (id_user, fullname or registered)
 *
 * @return array An array of user information
 */
function get_users ($order = "fullname", $filter = false, $fields = false) {
	if (is_array($order)) {
		$filter['order'] = $order['field'] . ' ' . $order['order'];
	}
	else {
		switch ($order) {
			case "registered":
			case "last_connect":
			case "fullname":
				break;
			default:
				$order = "fullname";
				break;
		}
		
		$filter['order'] = $order." ASC";
	}
	
	
	$output = array();
	
	$result = db_get_all_rows_filter ("tusuario", $filter, $fields);
	if ($result !== false) {
		foreach ($result as $row) {
			$output[$row["id_user"]] = $row;
		}
	}
	
	return $output;
}

/**
 * Sets the last login for a user
 *
 * @param string User id
 */
function process_user_contact ($id_user) {
	return db_process_sql_update ("tusuario",
		array ("last_connect" => get_system_time ()),
		array ("id_user" => $id_user));
}

/**
 * Create a new user
 *
 * @return bool false
 */
function create_user ($id_user, $password, $user_info) {
	$values = $user_info;
	$values["id_user"] = $id_user;
	$values["password"] = md5 ($password);
	$values["last_connect"] = 0;
	$values["registered"] = get_system_time ();
	
	return (@db_process_sql_insert ("tusuario", $values)) !== false;
}

/**
 * Save password history
 *
 * @return bool false
 */
function save_pass_history ($id_user, $password) {
	$values["id_user"] = $id_user;
	$values["password"] = md5 ($password);
	$values["date_begin"] = date ("Y/m/d H:i:s", get_system_time());
	
	return (@db_process_sql_insert ("tpassword_history", $values)) !== false;
}

/**
 * Deletes the user
 *
 * @param string User id
 */
function delete_user ($id_user) {
	$result = db_process_sql_delete('tusuario_perfil',
		array('id_usuario' => $id_user));
	if ($result === false) {
		return false;
	}
	
	$result = db_process_sql_delete('tusuario',
		array('id_user' => $id_user));
	if ($result === false) {
		return false;
	}
	return true;
}

/**
 * Update the password in MD5 for user pass as id_user with
 * password in plain text.
 * 
 * @param string user User ID
 * @param string password Password in plain text.
 * 
 * @return mixed False in case of error or invalid values passed. Affected rows otherwise
 */
function update_user_password ($user, $password_new) {
	global $config;
	if (isset($config['auth']) && $config['auth'] == 'pandora') {
		$sql = sprintf("UPDATE tusuario SET password = '" . md5($password_new) .
		"', last_pass_change = '" . date("Y-m-d H:i:s", get_system_time()) .
		"' WHERE id_user = '" . $user . "'");

		$connection = mysql_connect_db($config['rpandora_server'],
			$config['rpandora_dbname'], $config['rpandora_user'],
			$config['rpandora_pass']);
		$remote_pass_update = db_process_sql ($sql, 'affected_rows', $connection);

		if (!$remote_pass_update) {
			$config["auth_error"] = __('Could not changes password on remote pandora');
			return false;
		}
	}
	return db_process_sql_update ('tusuario',
		array ('password' => md5 ($password_new), 'last_pass_change' => date ("Y/m/d H:i:s", get_system_time())),
		array ('id_user' => $user));
}

/**
 * Update the data of a user that user is choose with
 * id_user.
 * 
 * @param string user User ID
 * @param array values Associative array with index as name of field and content.
 * 
 * @return mixed False in case of error or invalid values passed. Affected rows otherwise
 */
function update_user ($id_user, $values) {
	if (! is_array ($values))
		return false;
	
	return db_process_sql_update ("tusuario", $values, array ("id_user" => $id_user));
}

/**
 * Authenticate against an LDAP server.
 *
 * @param string User login
 * @param string User password (plain text)
 *
 * @return bool True if the login is correct, false in other case
 */
function ldap_process_user_login ($login, $password) {
	global $config;
	
	if (! function_exists ("ldap_connect")) {
		$config["auth_error"] = __('Your installation of PHP does not support LDAP');
		
		return false;
	}
	
	// Connect to the LDAP server
	$ds = @ldap_connect ($config["ldap_server"], $config["ldap_port"]);
	
	if (!$ds) {
		$config["auth_error"] = 'Error connecting to LDAP server';
		
		return false;
	}
	
	// Set the LDAP version
	ldap_set_option ($ds, LDAP_OPT_PROTOCOL_VERSION, $config["ldap_version"]);
	
	if ($config["ldap_start_tls"]) {
		if (!@ldap_start_tls ($ds)) { 
			$config["auth_error"] = 'Could not start TLS for LDAP connection';
			@ldap_close ($ds);
			
			return false;
		}
	}

	$dc = $config["ldap_base_dn"];
	
	#Search group of this user it belong.
	$filter="(" . $config['ldap_login_attr'] . io_safe_output($login) . ")";
	$justthese = array("objectclass=group");
	
	$sr = ldap_search($ds, $dc, $filter, $justthese);
	
	$memberof = ldap_get_entries($ds, $sr);
	
	if ($memberof["count"] == 0 && !isset($memberof[0]["memberof"])) {
		@ldap_close ($ds);
		return false;
	}
	else {
		$memberof = $memberof[0];
	}
	
	unset($memberof["count"]);

	$ldap_base_dn  = !empty($config["ldap_base_dn"]) ? "," . io_safe_output($config["ldap_base_dn"]) : '';
	
	$correct = false;
	if(!empty($ldap_base_dn)) {
		if (strlen($password) != 0 && @ldap_bind($ds, $memberof['dn'], $password) ) {
			$correct = true;
		}
	}
	else {
		if (strlen($password) != 0 && @ldap_bind($ds, io_safe_output($login), $password) ) {
			$correct = true;
		}
	}
	
	@ldap_close ($ds);

	if ($correct) {
		return true;
	}
	else {
		$config["auth_error"] = 'User not found in database or incorrect password';
		
		return false;
	}
}

/**
 * Checks if a user is in the autocreate blacklist.
 *
 * @param string User
 *
 * @return bool True if the user is in the blacklist, false otherwise.
 */
function is_user_blacklisted ($user) {
	global $config;
	
	$blisted_users = explode (',', $config['autocreate_blacklist']);
	foreach ($blisted_users as $blisted_user) {
		if ($user == $blisted_user) {
			return true;
		}
	}
	
	return false;
}

/**
 * Update local user pass from ldap user
 *
 * @param string Login
 * @param string Password
 *
 * @return bool
 */
function change_local_user_pass_ldap ($id_user, $password) {
	$local_user_pass = db_get_value_filter('password', 'tusuario', array('id_user' => $id_user));

	if (md5($password) !== $local_user_pass) {
		$values_update = array();
		$values_update['password'] = md5($password);

		db_process_sql_update('tusuario', $values_update, array('id_user' => $id_user));
	}

	return;
}

//Reference the global use authorization error to last auth error.
$config["auth_error"] = &$mysql_cache["auth_error"];
?>