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egroupware_official/phpgwapi/inc/class.egw_session.inc.php
Ralf Becker 1c11bfcf55 using a session for basic auth (not session aware) clients for WebDAV 
and GroupDAV. The "sessionid" get's constructed from the basic auth
credentials and is not random (as the clients dont store them).
--> speeds up the use of *DAV
--> stops *DAV handlers to created numerious sessions
2009-04-04 08:38:56 +00:00

1491 lines
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<?php
/**
* eGroupWare API: eGW session handling
*
* This class is based on the old phpgwapi/inc/class.sessions(_php4).inc.php:
* (c) 1998-2000 NetUSE AG Boris Erdmann, Kristian Koehntopp
* (c) 2003 FreeSoftware Foundation
* Not sure how much the current code still has to do with it.
*
* Former authers were:
* - NetUSE AG Boris Erdmann, Kristian Koehntopp
* - Dan Kuykendall <seek3r@phpgroupware.org>
* - Joseph Engo <jengo@phpgroupware.org>
*
* @link http://www.egroupware.org
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package api
* @subpackage session
* @author Ralf Becker <ralfbecker@outdoor-training.de> since 2003 on
* @version $Id$
*/
// some constants for pre php4.3
if (!defined('PHP_SHLIB_SUFFIX'))
{
define('PHP_SHLIB_SUFFIX',$is_windows ? 'dll' : 'so');
}
if (!defined('PHP_SHLIB_PREFIX'))
{
define('PHP_SHLIB_PREFIX',PHP_SHLIB_SUFFIX == 'dll' ? 'php_' : '');
}
/**
* eGW session handling
*
* Create, verifies or destroys an eGroupWare session
*
* There are separate session-handler classes: egw_session_(files|memcache),
* which implement custom session handler or certain extra functionality, like eg. listing sessions,
* not available in php's session extension.
*
* If you want to analyse the memory usage in the session, you can uncomment the following call:
*
* static function encrypt($kp3)
* {
* // switch that on to analyse memory usage in the session
* //self::log_session_usage($_SESSION[self::EGW_APPSESSION_VAR],'_SESSION['.self::EGW_APPSESSION_VAR.']',true,5000);
*/
class egw_session
{
/**
* Write debug messages about session verification and creation to the error_log
*/
const ERROR_LOG_DEBUG = false;
/**
* key of eGW's session-data in $_SESSION
*/
const EGW_SESSION_VAR = 'egw_session';
/**
* key of eGW's application session-data in $_SESSION
*/
const EGW_APPSESSION_VAR = 'egw_app_session';
/**
* key of eGW's required files in $_SESSION
*
* These files get set by egw_db and egw class, for classes which get not autoloaded (eg. ADOdb, idots_framework)
*/
const EGW_REQUIRED_FILES = 'egw_required_files';
/**
* key of eGW's egw_info cached in $_SESSION
*/
const EGW_INFO_CACHE = 'egw_info_cache';
/**
* key of eGW's egw object cached in $_SESSION
*/
const EGW_OBJECT_CACHE = 'egw_object_cache';
/**
* Name of cookie or get-parameter with session-id
*/
const EGW_SESSION_NAME = 'sessionid';
/**
* current user login (account_lid@domain)
*
* @var string
*/
var $login;
/**
* current user password
*
* @var string
*/
var $passwd;
/**
* current user db/ldap account id
*
* @var int
*/
var $account_id;
/**
* current user account login id (without the eGW-domain/-instance part
*
* @var string
*/
var $account_lid;
/**
* domain for current user
*
* @var string
*/
var $account_domain;
/**
* type flag, A - anonymous session, N - None, normal session
*
* @var string
*/
var $session_flags;
/**
* current user session id
*
* @var string
*/
var $sessionid;
/**
* an other session specific id (md5 from a random string),
* used together with the sessionid for xmlrpc basic auth and the encryption of session-data (if that's enabled)
*
* @var string
*/
var $kp3;
/**
* name of XML-RPC/SOAP method called
*
* @var string
*/
var $xmlrpc_method_called;
/**
* Array with the name of the system domains
*
* @var array
*/
private $egw_domains;
/**
* $_SESSION at the time the constructor was called
*
* @var array
*/
var $required_files;
/**
* Constructor just loads up some defaults from cookies
*
* @param array $domain_names=null domain-names used in this install
*/
function __construct(array $domain_names=null)
{
$this->required_files = $_SESSION[self::EGW_REQUIRED_FILES];
$this->sessionid = self::get_sessionid();
$this->kp3 = $_REQUEST['kp3'];
$this->egw_domains = $domain_names;
// verfiy and if necessary create and save our config settings
//
$save_rep = false;
if (!isset($GLOBALS['egw_info']['server']['max_access_log_age']))
{
$GLOBALS['egw_info']['server']['max_access_log_age'] = 90; // default 90 days
$save_rep = true;
}
if (!isset($GLOBALS['egw_info']['server']['block_time']))
{
$GLOBALS['egw_info']['server']['block_time'] = 5; // default 5min
$save_rep = true;
}
if (!isset($GLOBALS['egw_info']['server']['num_unsuccessful_id']))
{
$GLOBALS['egw_info']['server']['num_unsuccessful_id'] = 3; // default 3 trys per id
$save_rep = true;
}
if (!isset($GLOBALS['egw_info']['server']['num_unsuccessful_ip']))
{
$GLOBALS['egw_info']['server']['num_unsuccessful_ip'] = $GLOBALS['egw_info']['server']['num_unsuccessful_id']; // default same as for id
$save_rep = true;
}
if (!isset($GLOBALS['egw_info']['server']['install_id']))
{
$GLOBALS['egw_info']['server']['install_id'] = md5(common::randomstring(15));
}
if (!isset($GLOBALS['egw_info']['server']['sessions_timeout']))
{
$GLOBALS['egw_info']['server']['sessions_timeout'] = 14400;
$save_rep = true;
}
if (!isset($GLOBALS['egw_info']['server']['max_history']))
{
$GLOBALS['egw_info']['server']['max_history'] = 20;
$save_rep = true;
}
if ($save_rep)
{
$config = new config('phpgwapi');
$config->read_repository();
$config->value('max_access_log_age',$GLOBALS['egw_info']['server']['max_access_log_age']);
$config->value('block_time',$GLOBALS['egw_info']['server']['block_time']);
$config->value('num_unsuccessful_id',$GLOBALS['egw_info']['server']['num_unsuccessful_id']);
$config->value('num_unsuccessful_ip',$GLOBALS['egw_info']['server']['num_unsuccessful_ip']);
$config->value('install_id',$GLOBALS['egw_info']['server']['install_id']);
$config->value('sessions_timeout',$GLOBALS['egw_info']['server']['sessions_timeout']);
$config->value('max_history',$GLOBALS['egw_info']['server']['max_history']);
$config->save_repository();
}
self::set_cookiedomain();
ini_set('session.gc_maxlifetime', $GLOBALS['egw_info']['server']['sessions_timeout']);
}
/**
* Magic function called when this class get's restored from the session
*
*/
function __wakeup()
{
ini_set('session.gc_maxlifetime', $GLOBALS['egw_info']['server']['sessions_timeout']);
}
/**
* Destructor
*
*/
function __destruct()
{
self::encrypt($this->kp3);
}
/**
* commit the sessiondata to storage
*
* It's necessary to use this function instead of session_write_close() direct, as otherwise the session is not encrypted!
*/
function commit_session()
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."() sessionid=$this->sessionid, _SESSION[".self::EGW_SESSION_VAR.']='.array2string($_SESSION[self::EGW_SESSION_VAR]));
self::encrypt($this->kp3);
session_write_close();
}
/**
* Keys of session variables which get encrypted
*
* @var array
*/
static $egw_session_vars = array(
//self::EGW_SESSION_VAR, no need to encrypt and required by the session list
self::EGW_APPSESSION_VAR,
self::EGW_INFO_CACHE,
self::EGW_OBJECT_CACHE,
);
static $mcrypt;
/**
* Name of flag in session to signal it is encrypted or not
*/
const EGW_SESSION_ENCRYPTED = 'egw_session_encrypted';
/**
* Encrypt the variables in the session
*
* Is called by self::__destruct().
*/
static function encrypt($kp3)
{
// switch that on to analyse memory usage in the session
//self::log_session_usage($_SESSION[self::EGW_APPSESSION_VAR],'_SESSION['.self::EGW_APPSESSION_VAR.']',true,5000);
if (!isset($_SESSION[self::EGW_SESSION_ENCRYPTED]) && self::init_crypt($kp3))
{
foreach(self::$egw_session_vars as $name)
{
if (isset($_SESSION[$name]))
{
$_SESSION[$name] = mcrypt_generic(self::$mcrypt,serialize($_SESSION[$name]));
//error_log(__METHOD__."() 'encrypting' session var: $name, len=".strlen($_SESSION[$name]));
}
}
$_SESSION[self::EGW_SESSION_ENCRYPTED] = true; // flag session as encrypted
mcrypt_generic_deinit(self::$mcrypt);
self::$mcrypt = null;
}
}
/**
* Log the usage of session-vars
*
* @param array &$arr
* @param string $label
* @param boolean $recursion=true if true call itself for every item > $limit
* @param int $limit=1000 log only differences > $limit
*/
static function log_session_usage(&$arr,$label,$recursion=true,$limit=1000)
{
if (!is_array($arr)) return;
$sizes = array();
foreach($arr as $key => &$data)
{
$sizes[$key] = strlen(serialize($data));
}
arsort($sizes,SORT_NUMERIC);
foreach($sizes as $key => $size)
{
$diff = $size - (int)$_SESSION[$label.'-sizes'][$key];
$_SESSION[$label.'-sizes'][$key] = $size;
if ($diff > $limit)
{
error_log("strlen({$label}[$key])=".egw_vfs::hsize($size).", diff=".egw_vfs::hsize($diff));
if ($recursion) self::log_session_usage($arr[$key],$label.'['.$key.']',$recursion,$limit);
}
}
}
/**
* Decrypt the variables in the session
*
* Is called by self::init_handler from phpgwapi/inc/functions.inc.php (called from the header.inc.php)
* before the restore of the eGW enviroment takes place, so that the whole thing can be encrypted
*/
static function decrypt()
{
if ($_SESSION[self::EGW_SESSION_ENCRYPTED] && self::init_crypt($_REQUEST['kp3']))
{
foreach(self::$egw_session_vars as $name)
{
if (isset($_SESSION[$name]))
{
$_SESSION[$name] = unserialize(trim(mdecrypt_generic(self::$mcrypt,$_SESSION[$name])));
//error_log(__METHOD__."() 'decrypting' session var $name: gettype($name) = ".gettype($_SESSION[$name]));
}
}
unset($_SESSION[self::EGW_SESSION_ENCRYPTED]); // delete encryption flag
}
}
/**
* Check if session encryption is configured, possible and initialise it
*
* @param string $kp3 mcrypt key transported via cookie or get parameter like the session id,
* unlike the session id it's not know on the server, so only the client-request can decrypt the session!
* @param string $algo='tripledes'
* @param string $mode='ecb'
* @return boolean true if encryption is used, false otherwise
*/
static private function init_crypt($kp3,$algo='tripledes',$mode='ecb')
{
if(!$GLOBALS['egw_info']['server']['mcrypt_enabled'])
{
return false; // session encryption is switched off
}
if ($GLOBALS['egw_info']['currentapp'] == 'syncml' || !$kp3)
{
$kp3 = 'staticsyncmlkp3'; // syncml has no kp3!
}
if (is_null(self::$mcrypt))
{
if (!extension_loaded('mcrypt') && (!function_exists('dl') || !@dl(PHP_SHLIB_PREFIX.'mcrypt'.'.'.PHP_SHLIB_SUFFIX)))
{
error_log(__METHOD__."() required PHP extension mcrypt not loaded and can not be loaded, sessions get NOT encrypted!");
return false;
}
if (!(self::$mcrypt = mcrypt_module_open($algo, '', $mode, '')))
{
error_log(__METHOD__."() could not mcrypt_module_open(algo='$algo','',mode='$mode',''), sessions get NOT encrypted!");
return false;
}
$iv_size = mcrypt_enc_get_iv_size(self::$mcrypt);
$iv = !isset($GLOBALS['egw_info']['server']['mcrypt_iv']) || strlen($GLOBALS['egw_info']['server']['mcrypt_iv']) < $iv_size ?
mcrypt_create_iv ($iv_size, MCRYPT_RAND) : substr($GLOBALS['egw_info']['server']['mcrypt_iv'],0,$iv_size);
if (mcrypt_generic_init(self::$mcrypt,$kp3, $iv) < 0)
{
error_log(__METHOD__."() could not initialise mcrypt, sessions get NOT encrypted!");
return self::$mcrypt = false;
}
}
return is_resource(self::$mcrypt);
}
/**
* Create a new eGW session
*
* @param string $login user login
* @param string $passwd user password
* @param string $passwd_type type of password being used, ie plaintext, md5, sha1
* @param boolean $no_session_needed=false dont create a real session, eg. for GroupDAV clients using only basic auth, no cookie support
* @param boolean $auth_check=true if false, the user is loged in without checking his password (eg. for single sign on), default = true
* @return string session id
*/
function create($login,$passwd = '',$passwd_type = '',$no_session=false,$auth_check=true)
{
if (is_array($login))
{
$this->login = $login['login'];
$this->passwd = $login['passwd'];
$this->passwd_type = $login['passwd_type'];
$login = $this->login;
}
else
{
$this->login = $login;
$this->passwd = $passwd;
$this->passwd_type = $passwd_type;
}
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."($this->login,$this->passwd,$this->passwd_type,$no_session,$auth_check)");
self::split_login_domain($login,$this->account_lid,$this->account_domain);
// add domain to the login, if not already there
if (substr($this->login,-strlen($this->account_domain)-1) != '@'.$this->account_domain)
{
$this->login .= '@'.$this->account_domain;
}
$now = time();
//error_log(__METHOD__."($login,$passwd,$passwd_type,$no_session,$auth_check) account_lid=$this->account_lid, account_domain=$this->account_domain, default_domain={$GLOBALS['egw_info']['server']['default_domain']}, user/domain={$GLOBALS['egw_info']['user']['domain']}");
// This is to ensure that we authenticate to the correct domain (might not be default)
// if no domain is given we use the default domain, so we dont need to re-create everything
if (!$GLOBALS['egw_info']['user']['domain'] && $this->account_domain == $GLOBALS['egw_info']['server']['default_domain'])
{
$GLOBALS['egw_info']['user']['domain'] = $this->account_domain;
}
elseif (!$this->account_domain && $GLOBALS['egw_info']['user']['domain'])
{
$this->account_domain = $GLOBALS['egw_info']['user']['domain'];
}
elseif($this->account_domain != $GLOBALS['egw_info']['user']['domain'])
{
throw new Exception("Wrong domain! '$this->account_domain' != '{$GLOBALS['egw_info']['user']['domain']}'");
/* $GLOBALS['egw']->ADOdb = null;
$GLOBALS['egw_info']['user']['domain'] = $this->account_domain;
// reset the db and all other (non-header!) egw_info/server data
$GLOBALS['egw_info']['server'] = array(
'sessions_type' => $GLOBALS['egw_info']['server']['sessions_type'],
'default_domain' => $GLOBALS['egw_info']['server']['default_domain'],
);
$GLOBALS['egw_info']['server']['db_host'] = $GLOBALS['egw_domain'][$this->account_domain]['db_host'];
$GLOBALS['egw_info']['server']['db_port'] = $GLOBALS['egw_domain'][$this->account_domain]['db_port'];
$GLOBALS['egw_info']['server']['db_name'] = $GLOBALS['egw_domain'][$this->account_domain]['db_name'];
$GLOBALS['egw_info']['server']['db_user'] = $GLOBALS['egw_domain'][$this->account_domain]['db_user'];
$GLOBALS['egw_info']['server']['db_pass'] = $GLOBALS['egw_domain'][$this->account_domain]['db_pass'];
$GLOBALS['egw_info']['server']['db_type'] = $GLOBALS['egw_domain'][$this->account_domain]['db_type'];
$GLOBALS['egw']->setup('',false);
*/
}
unset($GLOBALS['egw_info']['server']['default_domain']); // we kill this for security reasons
//echo "<p>session::create(login='$login'): lid='$this->account_lid', domain='$this->account_domain'</p>\n";
$user_ip = self::getuser_ip();
$this->account_id = $GLOBALS['egw']->accounts->name2id($this->account_lid,'account_lid','u');
if (($blocked = $this->login_blocked($login,$user_ip)) || // too many unsuccessful attempts
$GLOBALS['egw_info']['server']['global_denied_users'][$this->account_lid] ||
$auth_check && !$GLOBALS['egw']->auth->authenticate($this->account_lid, $this->passwd, $this->passwd_type) ||
$this->account_id && $GLOBALS['egw']->accounts->get_type($this->account_id) == 'g')
{
$this->reason = $blocked ? 'blocked, too many attempts' : 'bad login or password';
$this->cd_reason = $blocked ? 99 : 5;
// we dont log anon users as it would block the website
if (!$GLOBALS['egw']->acl->get_specific_rights_for_account($this->account_id,'anonymous','phpgwapi'))
{
$this->log_access($this->reason,$login,$user_ip,0); // log unsuccessfull login
}
return false;
}
if (!$this->account_id && $GLOBALS['egw_info']['server']['auto_create_acct'])
{
if ($GLOBALS['egw_info']['server']['auto_create_acct'] == 'lowercase')
{
$this->account_lid = strtolower($this->account_lid);
}
$this->account_id = $GLOBALS['egw']->accounts->auto_add($this->account_lid, $passwd);
}
$GLOBALS['egw_info']['user']['account_id'] = $this->account_id;
$GLOBALS['egw']->accounts->accounts($this->account_id);
// for WebDAV and GroupDAV we use a pseudo sessionid created from md5(user:passwd)
// --> allows this stateless protocolls which use basic auth to use sessions!
if ($this->sessionid = self::get_sessionid(true))
{
$no_session = true; // no need to set cookie
session_id($this->sessionid);
}
else
{
session_start();
// set a new session-id, if not syncml (already done in Horde code and can NOT be changed)
if (!$no_session && $GLOBALS['egw_info']['flags']['currentapp'] != 'syncml')
{
session_regenerate_id(true);
}
$this->sessionid = session_id();
}
$this->kp3 = common::randomstring(24);
$this->read_repositories();
if ($GLOBALS['egw']->accounts->is_expired($this->user))
{
if(is_object($GLOBALS['egw']->log))
{
$GLOBALS['egw']->log->message(array(
'text' => 'W-LoginFailure, account loginid %1 is expired',
'p1' => $this->account_lid,
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
$this->reason = 'account is expired';
$this->cd_reason = 98;
return false;
}
$GLOBALS['egw_info']['user'] = $this->user;
$this->appsession('password','phpgwapi',base64_encode($this->passwd));
if ($GLOBALS['egw']->acl->check('anonymous',1,'phpgwapi'))
{
$this->session_flags = 'A';
}
else
{
$this->session_flags = 'N';
}
if (($hook_result = $GLOBALS['egw']->hooks->process(array(
'location' => 'session_creation',
'sessionid' => $this->sessionid,
'session_flags' => $this->session_flags,
'account_id' => $this->account_id,
'account_lid' => $this->account_lid,
'passwd' => $this->passwd,
'account_domain' => $this->account_domain,
'user_ip' => $user_ip,
),'',true))) // true = run hooks from all apps, not just the ones the current user has perms to run
{
foreach($hook_result as $app => $reason)
{
if ($reason) // called hook requests to deny the session
{
$this->reason = $this->cd_reason = $reason;
$this->log_access($this->reason,$login,$user_ip,0 ); // log unsuccessfull login
return false;
}
}
}
$GLOBALS['egw']->db->transaction_begin();
$this->register_session($this->login,$user_ip,$now,$this->session_flags);
if ($this->session_flags != 'A') // dont log anonymous sessions
{
$this->log_access($this->sessionid,$login,$user_ip,$this->account_id);
}
self::appsession('account_previous_login','phpgwapi',$GLOBALS['egw']->auth->previous_login);
$GLOBALS['egw']->accounts->update_lastlogin($this->account_id,$user_ip);
$GLOBALS['egw']->db->transaction_commit();
if ($GLOBALS['egw_info']['server']['usecookies'] && !$no_session)
{
self::egw_setcookie(self::EGW_SESSION_NAME,$this->sessionid);
self::egw_setcookie('kp3',$this->kp3);
self::egw_setcookie('domain',$this->account_domain);
}
if ($GLOBALS['egw_info']['server']['usecookies'] && !$no_session || isset($_COOKIE['last_loginid']))
{
self::egw_setcookie('last_loginid', $this->account_lid ,$now+1209600); /* For 2 weeks */
self::egw_setcookie('last_domain',$this->account_domain,$now+1209600);
}
//if (!$this->sessionid) echo "<p>session::create(login='$login') = '$this->sessionid': lid='$this->account_lid', domain='$this->account_domain'</p>\n";
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."($this->login,$this->passwd,$this->passwd_type,$no_session,$auth_check) successfull sessionid=$this->sessionid");
return $this->sessionid;
}
/**
* Store eGW specific session-vars
*
* @param string $login
* @param string $user_ip
* @param int $now
* @param string $session_flags
*/
private function register_session($login,$user_ip,$now,$session_flags)
{
// restore session vars set before session was started
if (is_array($this->required_files))
{
$_SESSION[self::EGW_REQUIRED_FILES] = !is_array($_SESSION[self::EGW_REQUIRED_FILES]) ? $this->required_files :
array_unique(array_merge($_SESSION[self::EGW_REQUIRED_FILES],$this->required_files));
unset($this->required_files);
}
$_SESSION[self::EGW_SESSION_VAR] = array(
'session_id' => $this->sessionid,
'session_lid' => $login,
'session_ip' => $user_ip,
'session_logintime' => $now,
'session_dla' => $now,
'session_action' => $_SERVER['PHP_SELF'],
'session_flags' => $session_flags,
// we need the install-id to differ between serveral installs shareing one tmp-dir
'session_install_id' => $GLOBALS['egw_info']['server']['install_id']
);
}
/**
* name of access-log table
*/
const ACCESS_LOG_TABLE = 'egw_access_log';
/**
* Write or update (for logout) the access_log
*
* @param string $sessionid id of session or 0 for unsuccessful logins
* @param string $login account_lid (evtl. with domain) or '' for settion the logout-time
* @param string $user_ip ip to log
* @param int $account_id numerical account_id
*/
private function log_access($sessionid,$login='',$user_ip='',$account_id='')
{
$now = time();
if ($login)
{
$GLOBALS['egw']->db->insert(self::ACCESS_LOG_TABLE,array(
'sessionid' => $sessionid,
'loginid' => $login,
'ip' => $user_ip,
'li' => $now,
'lo' => 0,
'account_id'=> $account_id,
),false,__LINE__,__FILE__);
}
else
{
$GLOBALS['egw']->db->update(self::ACCESS_LOG_TABLE,array('lo' => $now),array('sessionid' => $sessionid),__LINE__,__FILE__);
}
if ($GLOBALS['egw_info']['server']['max_access_log_age'])
{
$max_age = $now - $GLOBALS['egw_info']['server']['max_access_log_age'] * 24 * 60 * 60;
$GLOBALS['egw']->db->delete(self::ACCESS_LOG_TABLE,"li < $max_age",__LINE__,__FILE__);
}
}
/**
* Protect against brute force attacks, block login if too many unsuccessful login attmepts
*
* @param string $login account_lid (evtl. with domain)
* @param string $ip ip of the user
* @returns bool login blocked?
*/
private function login_blocked($login,$ip)
{
$blocked = false;
$block_time = time() - $GLOBALS['egw_info']['server']['block_time'] * 60;
if (($false_ip = $GLOBALS['egw']->db->select(self::ACCESS_LOG_TABLE,'COUNT(*)',array(
'account_id = 0',
'ip' => $ip,
"li > $block_time",
),__LINE__,__FILE__)->fetchSingle()) > $GLOBALS['egw_info']['server']['num_unsuccessful_ip'])
{
//echo "<p>login_blocked: ip='$ip' ".$this->db->f(0)." trys (".$GLOBALS['egw_info']['server']['num_unsuccessful_ip']." max.) since ".date('Y/m/d H:i',$block_time)."</p>\n";
$blocked = true;
}
if (($false_id = $GLOBALS['egw']->db->select(self::ACCESS_LOG_TABLE,'COUNT(*)',array(
'account_id = 0',
'(loginid = '.$GLOBALS['egw']->db->quote($login).' OR loginid LIKE '.$GLOBALS['egw']->db->quote($login.'@%').')',
"li > $block_time",
),__LINE__,__FILE__)->fetchSingle()) > $GLOBALS['egw_info']['server']['num_unsuccessful_id'])
{
//echo "<p>login_blocked: login='$login' ".$this->db->f(0)." trys (".$GLOBALS['egw_info']['server']['num_unsuccessful_id']." max.) since ".date('Y/m/d H:i',$block_time)."</p>\n";
$blocked = true;
}
if ($blocked && $GLOBALS['egw_info']['server']['admin_mails'] &&
$GLOBALS['egw_info']['server']['login_blocked_mail_time'] < time()-5*60) // max. one mail every 5mins
{
// notify admin(s) via email
$from = 'eGroupWare@'.$GLOBALS['egw_info']['server']['mail_suffix'];
$subject = lang("eGroupWare: login blocked for user '%1', IP %2",$login,$ip);
$body = lang("Too many unsucessful attempts to login: %1 for the user '%2', %3 for the IP %4",$false_id,$login,$false_ip,$ip);
$subject = $GLOBALS['egw']->send->encode_subject($subject);
$admin_mails = explode(',',$GLOBALS['egw_info']['server']['admin_mails']);
foreach($admin_mails as $to)
{
$GLOBALS['egw']->send->msg('email',$to,$subject,$body,'','','',$from,$from);
}
// save time of mail, to not send to many mails
$config = new config('phpgwapi');
$config->read_repository();
$config->value('login_blocked_mail_time',time());
$config->save_repository();
}
return $blocked;
}
/**
* Get the sessionid from Cookie, Get-Parameter or basic auth
*
* @param boolean $only_basic_auth=false return only a basic auth pseudo sessionid, default no
* @return string
*/
static function get_sessionid($only_basic_auth=false)
{
// for WebDAV and GroupDAV we use a pseudo sessionid created from md5(user:passwd)
// --> allows this stateless protocolls which use basic auth to use sessions!
if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW']) &&
in_array(basename($_SERVER['SCRIPT_NAME']),array('webdav.php','groupdav.php')))
{
// we generate a pseudo-sessionid from the basic auth credentials
$sessionid = md5($_SERVER['PHP_AUTH_USER'].':'.$_SERVER['PHP_AUTH_PW'].':'.$_SERVER['HTTP_HOST']);
}
elseif(!$only_basic_auth && isset($_REQUEST[self::EGW_SESSION_NAME]))
{
$sessionid = $_REQUEST[self::EGW_SESSION_NAME];
}
else
{
$sessionid = false;
}
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__.'() returning '.array2string($sessionid));
return $sessionid;
}
/**
* Check to see if a session is still current and valid
*
* @param string $sessionid session id to be verfied
* @param string $kp3 ?? to be verified
* @return bool is the session valid?
*/
function verify($sessionid=null,$kp3=null)
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."('$sessionid','$kp3') ".function_backtrace());
$fill_egw_info_and_repositories = !$GLOBALS['egw_info']['flags']['restored_from_session'];
if(!$sessionid)
{
$sessionid = self::get_sessionid();
$kp3 = $_REQUEST['kp3'];
}
$this->sessionid = $sessionid;
$this->kp3 = $kp3;
if (!$this->sessionid)
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."('$sessionid')_REQUEST[sessionid]='$_REQUEST[sessionid]' No session ID");
return false;
}
session_name(self::EGW_SESSION_NAME);
session_id($this->sessionid);
session_start();
// check if we have a eGroupware session --> return false if not (but dont destroy it!)
if (is_null($_SESSION) || !isset($_SESSION[self::EGW_SESSION_VAR]))
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."('$sessionid') session does NOT exist!");
return false;
}
$session =& $_SESSION[self::EGW_SESSION_VAR];
if ($session['session_dla'] <= time() - $GLOBALS['egw_info']['server']['sessions_timeout'])
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."('$sessionid') session timed out!");
$this->destroy($sessionid,$kp3);
return false;
}
$this->session_flags = $session['session_flags'];
$this->split_login_domain($session['session_lid'],$this->account_lid,$this->account_domain);
// This is to ensure that we authenticate to the correct domain (might not be default)
if($GLOBALS['egw_info']['user']['domain'] && $this->account_domain != $GLOBALS['egw_info']['user']['domain'])
{
throw new Exception("Wrong domain! '$this->account_domain' != '{$GLOBALS['egw_info']['user']['domain']}'");
/* if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."('$sessionid','$kp3') account_domain='$this->account_domain' != '{$GLOBALS['egw_info']['user']['domain']}'=egw_info[user][domain]");
$GLOBALS['egw']->ADOdb = null;
$GLOBALS['egw_info']['user']['domain'] = $this->account_domain;
// reset the db
$GLOBALS['egw_info']['server']['db_host'] = $GLOBALS['egw_domain'][$this->account_domain]['db_host'];
$GLOBALS['egw_info']['server']['db_port'] = $GLOBALS['egw_domain'][$this->account_domain]['db_port'];
$GLOBALS['egw_info']['server']['db_name'] = $GLOBALS['egw_domain'][$this->account_domain]['db_name'];
$GLOBALS['egw_info']['server']['db_user'] = $GLOBALS['egw_domain'][$this->account_domain]['db_user'];
$GLOBALS['egw_info']['server']['db_pass'] = $GLOBALS['egw_domain'][$this->account_domain]['db_pass'];
$GLOBALS['egw_info']['server']['db_type'] = $GLOBALS['egw_domain'][$this->account_domain]['db_type'];
$GLOBALS['egw']->setup('',false);
*/
}
$GLOBALS['egw_info']['user']['kp3'] = $this->kp3;
// allow xajax / notifications to not update the dla, so sessions can time out again
if (!isset($GLOBALS['egw_info']['flags']['no_dla_update']) || !$GLOBALS['egw_info']['flags']['no_dla_update'])
{
$this->update_dla();
}
$this->account_id = $GLOBALS['egw']->accounts->name2id($this->account_lid,'account_lid','u');
if (!$this->account_id)
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) !accounts::name2id('$this->account_lid')");
return false;
}
$GLOBALS['egw_info']['user']['account_id'] = $this->account_id;
if ($fill_egw_info_and_repositories)
{
$this->read_repositories();
}
if ($this->user['expires'] != -1 && $this->user['expires'] < time())
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) accounts is expired");
if(is_object($GLOBALS['egw']->log))
{
$GLOBALS['egw']->log->message(array(
'text' => 'W-VerifySession, account loginid %1 is expired',
'p1' => $this->account_lid,
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
return false;
}
if ($fill_egw_info_and_repositories)
{
$GLOBALS['egw_info']['user'] = $this->user;
$GLOBALS['egw_info']['user']['session_ip'] = $session['session_ip'];
$GLOBALS['egw_info']['user']['passwd'] = base64_decode($this->appsession('password','phpgwapi'));
}
if ($this->account_domain != $GLOBALS['egw_info']['user']['domain'])
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) wrong domain");
if(is_object($GLOBALS['egw']->log))
{
$GLOBALS['egw']->log->message(array(
'text' => 'W-VerifySession, the domains %1 and %2 don\'t match',
'p1' => $userid_array[1],
'p2' => $GLOBALS['egw_info']['user']['domain'],
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
return false;
}
if ($GLOBALS['egw_info']['server']['sessions_checkip'])
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) wrong IP");
if (strtoupper(substr(PHP_OS,0,3)) != 'WIN' && (!$GLOBALS['egw_info']['user']['session_ip'] ||
$GLOBALS['egw_info']['user']['session_ip'] != $this->getuser_ip()))
{
if(is_object($GLOBALS['egw']->log))
{
// This needs some better wording
$GLOBALS['egw']->log->message(array(
'text' => 'W-VerifySession, IP %1 doesn\'t match IP %2 in session table',
'p1' => $this->getuser_ip(),
'p2' => $GLOBALS['egw_info']['user']['session_ip'],
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
return false;
}
}
if ($fill_egw_info_and_repositories)
{
$GLOBALS['egw']->acl->acl($this->account_id);
accounts::getInstance()->setAccountId($this->account_id);
$GLOBALS['egw']->preferences->preferences($this->account_id);
$GLOBALS['egw']->applications->applications($this->account_id);
}
if (!$this->account_lid)
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) !account_lid");
if(is_object($GLOBALS['egw']->log))
{
// This needs some better wording
$GLOBALS['egw']->log->message(array(
'text' => 'W-VerifySession, account_id is empty',
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
//echo 'DEBUG: Sessions: account_id is empty!<br>'."\n";
return false;
}
// if user is anonymous and enters a not allowed application its session will be destroyed inmediatly.
$_current_app=$GLOBALS['egw_info']['flags']['currentapp'];
if($this->session_flags=='A' && !$GLOBALS['egw_info']['user']['apps'][$_current_app])
{
if (self::ERROR_LOG_DEBUG) error_log("*** session::verify($sessionid) anon user entering not allowed app");
$this->destroy($sessionid,$kp3);
/* Overwrite Cookie with empty user. For 2 weeks */
self::egw_setcookie(self::EGW_SESSION_NAME,'');
self::egw_setcookie('kp3','');
self::egw_setcookie('domain','');
self::egw_setcookie('last_domain','');
self::egw_setcookie('last_loginid', '');
return false;
}
if (self::ERROR_LOG_DEBUG) error_log("--> session::verify($sessionid) SUCCESS");
return true;
}
/**
* Terminate a session
*
* @param string $sessionid the id of the session to be terminated
* @param string $kp3
* @return boolean true on success, false on error
*/
function destroy($sessionid, $kp3)
{
if (!$sessionid && $kp3)
{
return false;
}
$this->log_access($this->sessionid); // log logout-time
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."($sessionid,$kp3) parent::destroy()=$ret");
$GLOBALS['egw']->hooks->process(array(
'location' => 'session_destroyed',
'sessionid' => $sessionid,
),'',true); // true = run hooks from all apps, not just the ones the current user has perms to run
// Only do the following, if where working with the current user
if (!$GLOBALS['egw_info']['user']['sessionid'] || $sessionid == $GLOBALS['egw_info']['user']['sessionid'])
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__." ********* about to call session_destroy!");
session_unset();
//echo '<p>'.__METHOD__.": session_destroy() returned ".(session_destroy() ? 'true' : 'false')."</p>\n";
@session_destroy();
// we need to (re-)load the eGW session-handler, as session_destroy unloads custom session-handlers
if (function_exists('init_session_handler'))
{
init_session_handler();
}
if ($GLOBALS['egw_info']['server']['usecookies'])
{
self::egw_setcookie(session_name());
}
}
else
{
$sessions = self::session_list(0,'','',true);
if (isset($sessions[$sessionid]) && session_module_name() == 'files')
{
//echo '<p>'.__METHOD__."($session_id): unlink('".$sessions[$sessionid]['php_session_file']."')</p>\n";
@unlink($sessions[$sessionid]['php_session_file']);
}
}
return true;
}
/**
* Generate a url which supports url or cookies based sessions
*
* Please note, the values of the query get url encoded!
*
* @param string $url a url relative to the egroupware install root, it can contain a query too
* @param array/string $extravars query string arguements as string or array (prefered)
* @return string generated url
*/
public static function link($url, $extravars = '')
{
//echo '<p>'.__METHOD__."(url='$url',extravars='".array2string($extravars)."')";
if ($url[0] != '/')
{
$app = $GLOBALS['egw_info']['flags']['currentapp'];
if ($app != 'login' && $app != 'logout')
{
$url = $app.'/'.$url;
}
}
// append the url to the webserver url, but avoid more then one slash between the parts of the url
if ($url[0] != '/' || $GLOBALS['egw_info']['server']['webserver_url'] != '/')
{
if($url[0] != '/' && substr($GLOBALS['egw_info']['server']['webserver_url'],-1) != '/')
{
$url = $GLOBALS['egw_info']['server']['webserver_url'] .'/'. $url;
}
else
{
$url = $GLOBALS['egw_info']['server']['webserver_url'] . $url;
}
}
if(isset($GLOBALS['egw_info']['server']['enforce_ssl']) && $GLOBALS['egw_info']['server']['enforce_ssl'])
{
if(substr($url ,0,4) != 'http')
{
$url = 'https://'.$GLOBALS['egw_info']['server']['hostname'].$url;
}
else
{
$url = str_replace ( 'http:', 'https:', $url);
}
}
$vars = array();
// add session params if not using cookies
if (!$GLOBALS['egw_info']['server']['usecookies'])
{
$vars[self::EGW_SESSION_NAME] = $GLOBALS['egw']->session->sessionid;
$vars['kp3'] = $GLOBALS['egw']->session->kp3;
$vars['domain'] = $GLOBALS['egw']->session->account_domain;
}
// check if the url already contains a query and ensure that vars is an array and all strings are in extravars
list($url,$othervars) = explode('?',$url);
if ($extravars && is_array($extravars))
{
$vars += $extravars;
$extravars = $othervars;
}
else
{
if ($othervars) $extravars .= ($extravars?'&':'').$othervars;
}
// parse extravars string into the vars array
if ($extravars)
{
foreach(explode('&',$extravars) as $expr)
{
list($var,$val) = explode('=', $expr,2);
if (substr($var,-2) == '[]')
{
$vars[substr($var,0,-2)][] = $val;
}
else
{
$vars[$var] = $val;
}
}
}
// if there are vars, we add them urlencoded to the url
if (count($vars))
{
$query = array();
foreach($vars as $key => $value)
{
if (is_array($value))
{
foreach($value as $val)
{
$query[] = $key.'[]='.urlencode($val);
}
}
else
{
$query[] = $key.'='.urlencode($value);
}
}
$url .= '?' . implode('&',$query);
}
//echo " = '$url'</p>\n";
return $url;
}
/**
* Stores or retrieve applications data in/form the eGW session
*
* @param string $location free lable to store the data
* @param string $appname='' default current application (egw_info[flags][currentapp])
* @param mixed $data='##NOTHING##' if given, data to store, if not specified
* @return mixed session data or false if no data stored for $appname/$location
*/
public static function &appsession($location = 'default', $appname = '', $data = '##NOTHING##')
{
if (isset($_SESSION[self::EGW_SESSION_ENCRYPTED]))
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__.' called after session was encrypted --> ignored!');
return false; // can no longer store something in the session, eg. because commit_session() was called
}
if (!$appname)
{
$appname = $GLOBALS['egw_info']['flags']['currentapp'];
}
// allow to store eg. '' as the value.
if ($data === '##NOTHING##')
{
if(isset($_SESSION[self::EGW_APPSESSION_VAR][$appname]) && array_key_exists($location,$_SESSION[self::EGW_APPSESSION_VAR][$appname]))
{
$ret =& $_SESSION[self::EGW_APPSESSION_VAR][$appname][$location];
}
else
{
$ret = false;
}
}
else
{
$_SESSION[self::EGW_APPSESSION_VAR][$appname][$location] =& $data;
$ret =& $_SESSION[self::EGW_APPSESSION_VAR][$appname][$location];
}
if (self::ERROR_LOG_DEBUG === 'appsession')
{
error_log(__METHOD__."($location,$appname,$data) === ".(is_scalar($ret) && strlen($ret) < 50 ?
(is_bool($ret) ? ($ret ? '(bool)true' : '(bool)false') : $ret) :
(strlen($r = array2string($ret)) < 50 ? $r : substr($r,0,50).' ...')));
}
return $ret;
}
/**
* Get the ip address of current users
*
* @return string ip address
*/
public static function getuser_ip()
{
return isset($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];
}
/**
* domain for cookies
*
* @var string
*/
private static $cookie_domain = '';
/**
* path for cookies
*
* @var string
*/
private static $cookie_path = '/';
/**
* Set a cookie with eGW's cookie-domain and -path settings
*
* @param string $cookiename name of cookie to be set
* @param string $cookievalue='' value to be used, if unset cookie is cleared (optional)
* @param int $cookietime=0 when cookie should expire, 0 for session only (optional)
* @param string $cookiepath=null optional path (eg. '/') if the eGW install-dir should not be used
*/
public static function egw_setcookie($cookiename,$cookievalue='',$cookietime=0,$cookiepath=null)
{
if (!isset(self::$cookie_domain) || !isset(self::$cookie_path))
{
self::set_cookiedomain();
}
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."($cookiename,$cookievalue,$cookietime,$cookiepath,self::$cookie_domain)");
setcookie($cookiename,$cookievalue,$cookietime,is_null($cookiepath) ? self::$cookie_path : $cookiepath,self::$cookie_domain);
}
/**
* Set the domain and path used for cookies
*/
private static function set_cookiedomain()
{
if ($GLOBALS['egw_info']['server']['cookiedomain'])
{
// Admin set domain, eg. .domain.com to allow egw.domain.com and www.domain.com
self::$cookie_domain = $GLOBALS['egw_info']['server']['cookiedomain'];
}
else
{
// Use HTTP_X_FORWARDED_HOST if set, which is the case behind a none-transparent proxy
self::$cookie_domain = isset($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : $_SERVER['HTTP_HOST'];
}
// remove port from HTTP_HOST
if (preg_match("/^(.*):(.*)$/",self::$cookie_domain,$arr))
{
self::$cookie_domain = $arr[1];
}
if (count(explode('.',self::$cookie_domain)) <= 1)
{
// setcookie dont likes domains without dots, leaving it empty, gets setcookie to fill the domain in
self::$cookie_domain = '';
}
if (!$GLOBALS['egw_info']['server']['cookiepath'] ||
!(self::$cookie_path = parse_url($GLOBALS['egw_info']['server']['webserver_url'],PHP_URL_PATH)))
{
self::$cookie_path = '/';
}
//echo "<p>cookie_path='self::$cookie_path', cookie_domain='self::$cookie_domain'</p>\n";
session_set_cookie_params(0,$path,$domain);
}
/**
* Search the instance matching the request
*
* @param string $login on login $_POST['login'], $_SERVER['PHP_AUTH_USER'] or $_SERVER['REMOTE_USER']
* @param string $domain_requested usually $_REQUEST['domain']
* @param string &$default_domain usually $default_domain get's set eg. by sitemgr
* @param string $server_name usually $_SERVER['SERVER_NAME']
* @param array $domains=null defaults to $GLOBALS['egw_domain'] from the header
* @return string $GLOBALS['egw_info']['user']['domain'] set with the domain/instance to use
*/
public static function search_instance($login,$domain_requested,&$default_domain,$server_name,array $domains=null)
{
if (is_null($domains)) $domains = $GLOBALS['egw_domain'];
if (!isset($default_domain) || !isset($domains[$default_domain])) // allow to overwrite the default domain
{
if(isset($domains[$server_name]))
{
$default_domain = $server_name;
}
else
{
$domain_part = explode('.',$server_name);
array_shift($domain_part);
$domain_part = implode('.',$domain_part);
if(isset($domains[$domain_part]))
{
$default_domain = $domain_part;
}
else
{
reset($domains);
list($default_domain) = each($domains);
}
unset($domain_part);
}
}
if (isset($login)) // on login
{
if (strpos($login,'@') === false || count($domains) == 1)
{
$login .= '@' . (isset($_POST['logindomain']) ? $_POST['logindomain'] : $default_domain);
}
$parts = explode('@',$login);
$domain = array_pop($parts);
$GLOBALS['login'] = $login;
}
else // on "normal" pageview
{
$domain = $domain_requested;
}
if (!isset($domains[$domain]))
{
$domain = $default_domain;
}
return $domain;
}
/**
* Update session_action and session_dla (session last used time),
*/
private function update_dla()
{
if (isset($_GET['menuaction']))
{
$action = $_GET['menuaction'];
}
else
{
$action = $_SERVER['PHP_SELF'];
}
// This way XML-RPC users aren't always listed as
// xmlrpc.php
if ($this->xmlrpc_method_called)
{
$action = $this->xmlrpc_method_called;
}
$_SESSION[self::EGW_SESSION_VAR]['session_dla'] = time();
$_SESSION[self::EGW_SESSION_VAR]['session_action'] = $action;
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__.'() _SESSION['.self::EGW_SESSION_VAR.']='.array2string($_SESSION[self::EGW_SESSION_VAR]));
}
/**
* Read the diverse repositories / init classes with data from the just loged in user
*
*/
public function read_repositories()
{
$GLOBALS['egw']->acl->acl($this->account_id);
accounts::getInstance()->setAccountId($this->account_id);
$GLOBALS['egw']->preferences->preferences($this->account_id);
$GLOBALS['egw']->applications->applications($this->account_id);
$this->user = $GLOBALS['egw']->accounts->read_repository();
$this->user['acl'] = $GLOBALS['egw']->acl->read_repository();
$this->user['preferences'] = $GLOBALS['egw']->preferences->read_repository();
if (is_object($GLOBALS['egw']->datetime))
{
$GLOBALS['egw']->datetime->datetime(); // to set tz_offset from the now read prefs
}
$this->user['apps'] = $GLOBALS['egw']->applications->read_repository();
$this->user['domain'] = $this->account_domain;
$this->user['sessionid'] = $this->sessionid;
$this->user['kp3'] = $this->kp3;
$this->user['session_ip'] = $this->getuser_ip();
$this->user['session_lid'] = $this->account_lid.'@'.$this->account_domain;
$this->user['account_id'] = $this->account_id;
$this->user['account_lid'] = $this->account_lid;
$this->user['userid'] = $this->account_lid;
$this->user['passwd'] = @$this->passwd;
}
/**
* Splits a login-name into account_lid and eGW-domain/-instance
*
* @param string $login login-name (ie. user@default)
* @param string &$account_lid returned account_lid (ie. user)
* @param string &$domain returned domain (ie. domain)
*/
private function split_login_domain($login,&$account_lid,&$domain)
{
$parts = explode('@',$login);
//conference - for strings like vinicius@thyamad.com@default ,
//allows that user have a login that is his e-mail. (viniciuscb)
if (count($parts) > 1)
{
$probable_domain = array_pop($parts);
//Last part of login string, when separated by @, is a domain name
if (in_array($probable_domain,$this->egw_domains))
{
$got_login = true;
$domain = $probable_domain;
$account_lid = implode('@',$parts);
}
}
if (!$got_login)
{
$domain = $GLOBALS['egw_info']['server']['default_domain'];
$account_lid = $login;
}
}
/**
* Create a hash from user and pw
*
* Can be used to check setup config user/password inside egroupware:
*
* if (egw_session::user_pw_hash($user,$pw) === $GLOBALS['egw_info']['server']['config_hash'])
*
* @param string $user username
* @param string $password password or md5 hash of password if $allow_password_md5
* @param boolean $allow_password_md5=false can password alread be an md5 hash
* @return string
*/
static function user_pw_hash($user,$password,$allow_password_md5=false)
{
$password_md5 = $allow_password_md5 && preg_match('/^[a-f0-9]{32}$/',$password) ? $password : md5($password);
$hash = sha1(strtolower($user).$password_md5);
//echo "<p>".__METHOD__."('$user','$password',$allow_password_md5) sha1('".strtolower($user)."$password_md5')='$hash'</p>\n";
return $hash;
}
/*
* Funtions to access the used session-handler, specified in header.inc.php: $GLOBALS['egw_info']['server']['session_handler']
*/
/**
* Name of session-handler-class
*
* @var string
*/
private static $session_handler = 'egw_session_files';
/**
* Initialise the used session handler
*/
public static function init_handler()
{
if (isset($GLOBALS['egw_info']['server']['session_handler']) && class_exists($GLOBALS['egw_info']['server']['session_handler']))
{
self::$session_handler = $GLOBALS['egw_info']['server']['session_handler'];
}
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__.'() session_handler='.self::$session_handler.', egw_info[server][session_handler]='.$GLOBALS['egw_info']['server']['session_handler']);
if (method_exists(self::$session_handler,'init_session_handler'))
{
call_user_func(array(self::$session_handler,'init_session_handler'));
}
ini_set('session.use_cookies',0); // disable the automatic use of cookies, as it uses the path / by default
session_name(self::EGW_SESSION_NAME);
if (($sessionid = self::get_sessionid()))
{
session_id($sessionid);
session_start();
self::decrypt();
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."() sessionid=$sessionid, _SESSION[".self::EGW_SESSION_VAR.']='.array2string($_SESSION[self::EGW_SESSION_VAR]));
}
else
{
if (self::ERROR_LOG_DEBUG) error_log(__METHOD__."() no active session!");
}
}
/**
* Get a session list (of the current instance)
*
* @param int $start
* @param string $sort='session_dla' session_lid, session_id, session_started, session_logintime, session_action, or (default) session_dla
* @param string $order='DESC' ASC or DESC
* @return array with sessions (values for keys as in $sort) or array() if not supported by session-handler
*/
public static function session_list($start,$sort='DESC',$order='session_dla')
{
if (method_exists(self::$session_handler,'session_list'))
{
return call_user_func(array(self::$session_handler,'session_list'),$start,$sort,$order);
}
return array();
}
/**
* Query number of sessions (not more then once every N secs)
*
* @return int|boolean integer number of sessions or false if not supported by session-handler
*/
public static function session_count()
{
if (method_exists(self::$session_handler,'session_count'))
{
return call_user_func(array(self::$session_handler,'session_count'));
}
return false;
}
/*
* depricated functions, to be removed after 1.6
*/
/**
* Delete all data from the session cache for a user
*
* @param int $accountid user account id, defaults to current user (optional)
* @deprecated not longer used / necessary
*/
function delete_cache($accountid='')
{
}
}
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