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egroupware/phpgwapi/inc/class.sessions.inc.php

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<?php
/**
* eGW's Session Management
*
* This allows eGroupWare to use php or database sessions
*
* @link www.egroupware.org
* @author NetUSE AG Boris Erdmann, Kristian Koehntopp
* @author Dan Kuykendall <seek3r@phpgroupware.org>
* @author Joseph Engo <jengo@phpgroupware.org>
* @author Ralf Becker <ralfbecker@outdoor-training.de>
* @copyright &copy; 1998-2000 NetUSE AG Boris Erdmann, Kristian Koehntopp <br> &copy; 2003 FreeSoftware Foundation
* @license LGPL
* @version $Id$
*/
/**
* eGW's Session Management
*
* Baseclass for db- and php-sessions
*
* @package api
* @subpackage sessions
*/
class sessions_
{
/**
* 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;
/**
* previous page call id - repost prevention, not used in eGW
*
* @var string
*/
var $history_id;
/**
* 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;
/**
* encryption key for the encrption of the session-data, if enabled
*
* @var string
*/
var $key;
/**
* mcrypt's iv
*
* @var string
*/
var $iv;
/**
* session data
*
* @var array
*/
var $data;
/**
* instance of the database object
*
* @var egw_db
*/
var $db;
/**
* name of access-log table
*
* @var string
*/
var $access_table = 'egw_access_log';
/**
* @var array publicly available methods
*/
/* var $public_functions = array(
'list_methods' => True,
'update_dla' => True,
'list' => True,
'total' => True
);*/
/**
* domain for cookies
*
* @var string
*/
var $cookie_domain;
/**
* path for cookies
*
* @var string
*/
var $cookie_path;
/**
* name of XML-RPC/SOAP method called
*
* @var string
*/
var $xmlrpc_method_called;
/**
* Array with the name of the system domains
*
* @var array
*/
var $egw_domains;
/**
* Write debug messages about session verification to the error_log
*
* @var boolean
*/
var $errorlog_debug = false;
/**
* Constructor just loads up some defaults from cookies
*
* @param $domain_names=null domain-names used in this install
*/
function sessions_($domain_names=null)
{
$this->db = clone($GLOBALS['egw']->db);
$this->db->set_app('phpgwapi');
$this->sessionid = get_var('sessionid',array('GET','COOKIE'));
$this->kp3 = get_var('kp3',array('GET','COOKIE'));
$this->egw_domains = $domain_names;
/* Create the crypto object */
$GLOBALS['egw']->crypto =& CreateObject('phpgwapi.crypto');
if ($GLOBALS['egw_info']['server']['usecookies'])
{
$this->egw_set_cookiedomain();
}
// 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'] = 30; // default 30min
$save_rep = True;
}
if (!isset($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']))
{
$GLOBALS['egw_info']['server']['install_id'] = md5($GLOBALS['egw']->common->randomstring(15));
$save_rep = True;
}
if (!isset($GLOBALS['egw_info']['server']['sessions_timeout']))
{
$GLOBALS['egw_info']['server']['sessions_timeout'] = 14400;
$save_rep = True;
}
if (!isset($GLOBALS['egw_info']['server']['sessions_app_timeout']))
{
$GLOBALS['egw_info']['server']['sessions_app_timeout'] = 86400;
$save_rep = True;
}
if (!isset($GLOBALS['egw_info']['server']['max_history']))
{
$GLOBALS['egw_info']['server']['max_history'] = 20;
$save_rep = True;
}
if ($save_rep)
{
$config = CreateObject('phpgwapi.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']);
$config->value('sessions_app_timeout',$GLOBALS['egw_info']['server']['sessions_app_timeout']);
$config->save_repository();
unset($config);
}
}
/**
* commit the sessiondata to storage (needs to be reimplemented for the subclasses)
*
* @return bool
*/
function commit_session() {
return true;
}
/**
* 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 &$domain returned domain (ie. domain)
*/
function split_login_domain($login,&$account_lid,&$domain)
{
$parts = explode('@',$login);
// var_dump(debug_backtrace());
//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;
}
}
/**
* 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='',$kp3='')
{
$fill_egw_info_and_repositories = !$GLOBALS['egw_info']['flags']['restored_from_session'];
if(empty($sessionid) || !$sessionid)
{
$sessionid = get_var('sessionid',array('GET','COOKIE'));
$kp3 = get_var('kp3',array('GET','COOKIE'));
}
$this->sessionid = $sessionid;
$this->kp3 = $kp3;
$session = $this->read_session();
//echo "<pre>session::verify(id='$sessionid'): \n".print_r($session,True)."</pre>\n";
/*
$fp = fopen('/tmp/session_verify','a+');
fwrite($fp,"session::verify(id='$sessionid'): \n".print_r($session,True)."\n\n");
fclose($fp);
*/
if ($session['session_dla'] <= (time() - $GLOBALS['egw_info']['server']['sessions_timeout']))
{
if ($this->errorlog_debug) error_log("*** session::verify('$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($this->account_domain != $GLOBALS['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;
$this->update_dla();
$this->account_id = $GLOBALS['egw']->accounts->name2id($this->account_lid,'account_lid','u');
if (!$this->account_id)
{
if ($this->errorlog_debug) error_log("*** session::verify($sessionid) !accounts::name2id('$this->account_lid')");
return False;
}
$GLOBALS['egw_info']['user']['account_id'] = $this->account_id;
/* init the crypto object before appsession call below */
$this->key = md5($this->kp3 . $this->sessionid . @$GLOBALS['egw_info']['server']['encryptkey']);
$this->iv = $GLOBALS['egw_info']['server']['mcrypt_iv'];
$GLOBALS['egw']->crypto->init(array($this->key,$this->iv));
if ($fill_egw_info_and_repositories)
{
$this->read_repositories(@$GLOBALS['egw_info']['server']['cache_phpgw_info']);
}
if ($this->user['expires'] != -1 && $this->user['expires'] < time())
{
if ($this->errorlog_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']['hooks'] = $this->hooks;
$GLOBALS['egw_info']['user']['session_ip'] = $session['session_ip'];
$GLOBALS['egw_info']['user']['passwd'] = base64_decode($this->appsession('password','phpgwapi'));
}
if ($this->account_domain != $GLOBALS['egw_info']['user']['domain'])
{
if ($this->errorlog_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 ($this->errorlog_debug) error_log("*** session::verify($sessionid) wrong IP");
if((PHP_OS != 'Windows') && (PHP_OS != 'WINNT') &&
(!$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 (! $this->account_lid)
{
if ($this->errorlog_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'][$_current_app])
{
if ($this->errorlog_debug) error_log("*** session::verify($sessionid) anon user entering not allowed app");
$this->destroy($sessionid,$kp3);
/* Overwrite Cookie with empty user. For 2 weeks */
$this->egw_setcookie('sessionid','');
$this->egw_setcookie('kp3','');
$this->egw_setcookie('domain','');
$this->egw_setcookie('last_domain','');
$this->egw_setcookie('last_loginid', '');
return False;
}
if ($this->errorlog_debug) error_log("--> session::verify($sessionid) SUCCESS");
return True;
}
/**
* Functions for creating and verifying the session
*/
/**
* Get the ip address of current users
*
* @return string ip address
*/
function getuser_ip()
{
return (isset($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR']);
}
/**
* Set the domain used for cookies
*
* @return string domain
*/
function egw_set_cookiedomain()
{
if ($GLOBALS['egw_info']['server']['cookiedomain'])
{
// Admin set domain, eg. .domain.com to allow egw.domain.com and www.domain.com
$this->cookie_domain = $GLOBALS['egw_info']['server']['cookiedomain'];
}
else
{
// Use HTTP_X_FORWARDED_HOST if set, which is the case behind a none-transparent proxy
$this->cookie_domain = isset($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : $_SERVER['HTTP_HOST'];
}
// remove port from HTTP_HOST
if (preg_match("/^(.*):(.*)$/",$this->cookie_domain,$arr))
{
$this->cookie_domain = $arr[1];
}
if (count(explode('.',$this->cookie_domain)) <= 1)
{
// setcookie dont likes domains without dots, leaving it empty, gets setcookie to fill the domain in
$this->cookie_domain = '';
}
print_debug('COOKIE_DOMAIN',$this->cookie_domain,'api');
if (!$GLOBALS['egw_info']['server']['cookiepath'])
{
$this->cookie_path = '/';
}
else
{
$url_parts = parse_url($GLOBALS['egw_info']['server']['webserver_url']);
if (!($this->cookie_path = $url_parts['path']) ) $this->cookie_path = '/';
}
//echo "<p>cookie_path='$this->cookie_path', cookie_domain='$this->cookie_domain'</p>\n";
$this->set_cookie_params($this->cookie_domain,$this->cookie_path); // for php4 sessions necessary
}
/**
* Set a cookie
*
* @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 $cookiepath=null optional path (eg. '/') if the eGW install-dir should not be used
*/
function egw_setcookie($cookiename,$cookievalue='',$cookietime=0,$cookiepath=null)
{
if (!$this->cookie_domain || !$this->cookie_path)
{
$this->egw_set_cookiedomain();
}
if (is_null($cookiepath)) $cookiepath = $this->cookie_path;
if ($this->errorlog_debug) error_log("setcookie($cookiename,$cookievalue,$cookietime,$cookiepath,$this->cookie_domain)");
setcookie($cookiename,$cookievalue,$cookietime,$cookiepath,$this->cookie_domain);
}
/**
* @deprecated use egw_setcookie
*/
function phpgw_setcookie($cookiename,$cookievalue='',$cookietime=0)
{
$this->egw_setcookie($cookiename,$cookievalue,$cookietime);
}
/**
* Create a new session
*
* @param string $login user login
* @param string $passwd user password
* @param string $passwd_type type of password being used, ie plaintext, md5, sha1
* @return string session id
*/
function create($login,$passwd = '',$passwd_type = '')
{
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;
}
$this->clean_sessions();
$this->split_login_domain($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;
}
$now = time();
/* This is to ensure that we authenticate to the correct domain (might not be default) */
// if no domain is given we use the default domain, so we dont need to re-create everything
if (!$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'])
{
$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'];
$GLOBALS['egw']->setup('',False);
}
//echo "<p>session::create(login='$login'): lid='$this->account_lid', domain='$this->account_domain'</p>\n";
$user_ip = $this->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] ||
!$GLOBALS['egw']->auth->authenticate($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;
$this->log_access($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);
$this->sessionid = $this->new_session_id();
$this->kp3 = md5($GLOBALS['egw']->common->randomstring(15));
if ($GLOBALS['egw_info']['server']['usecookies'])
{
$this->egw_setcookie('sessionid',$this->sessionid);
$this->egw_setcookie('kp3',$this->kp3);
$this->egw_setcookie('domain',$this->account_domain);
}
if ($GLOBALS['egw_info']['server']['usecookies'] || isset($_COOKIE['last_loginid']))
{
$this->egw_setcookie('last_loginid', $this->account_lid ,$now+1209600); /* For 2 weeks */
$this->egw_setcookie('last_domain',$this->account_domain,$now+1209600);
}
unset($GLOBALS['egw_info']['server']['default_domain']); /* we kill this for security reasons */
/* init the crypto object */
$this->key = md5($this->kp3 . $this->sessionid . $GLOBALS['egw_info']['server']['encryptkey']);
$this->iv = $GLOBALS['egw_info']['server']['mcrypt_iv'];
$GLOBALS['egw']->crypto->init(array($this->key,$this->iv));
$this->read_repositories(False);
if ($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;
$GLOBALS['egw_info']['hooks'] = $this->hooks;
$this->appsession('password','phpgwapi',base64_encode($this->passwd));
if ($GLOBALS['egw']->acl->check('anonymous',1,'phpgwapi'))
{
$session_flags = 'A';
}
else
{
$session_flags = 'N';
}
$GLOBALS['egw']->db->transaction_begin();
$this->register_session($this->login,$user_ip,$now,$session_flags);
if ($session_flags != 'A') // dont log anonymous sessions
{
$this->log_access($this->sessionid,$login,$user_ip,$this->account_id);
}
$this->appsession('account_previous_login','phpgwapi',$GLOBALS['egw']->auth->previous_login);
$GLOBALS['egw']->accounts->update_lastlogin($this->account_id,$user_ip);
$GLOBALS['egw']->db->transaction_commit();
//if (!$this->sessionid) echo "<p>session::create(login='$login') = '$this->sessionid': lid='$this->account_lid', domain='$this->account_domain'</p>\n";
return $this->sessionid;
}
/**
* 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 $account_id numerical account_id
*/
function log_access($sessionid,$login='',$user_ip='',$account_id='')
{
$now = time();
if ($login)
{
if (strlen($login) > 30)
{
$login = substr($login,0,30);
}
$GLOBALS['egw']->db->insert($this->access_table,array(
'sessionid' => $sessionid,
'loginid' => $login,
'ip' => $user_ip,
'li' => $now,
'lo' => 0,
'account_id'=> $account_id,
),false,__LINE__,__FILE__);
}
else
{
$GLOBALS['egw']->db->update($this->access_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;
$GLOBALS['egw']->db->delete($this->access_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 $ip ip of the user
* @returns bool login blocked?
*/
function login_blocked($login,$ip)
{
$blocked = False;
$block_time = time() - $GLOBALS['egw_info']['server']['block_time'] * 60;
$this->db->select($this->access_table,'COUNT(*)',array(
'account_id = 0',
'ip' => $ip,
"li > $block_time",
),__LINE__,__FILE__);
$this->db->next_record();
if (($false_ip = $this->db->f(0)) > $GLOBALS['egw_info']['server']['num_unsuccessful_ip'])
{
//echo "<p>login_blocked: ip='$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;
}
$this->db->select($this->access_table,'COUNT(*)',array(
'account_id = 0',
'(loginid = '.$this->db->quote($login).' OR loginid LIKE '.$this->db->quote($login.'@%').')',
"li > $block_time",
),__LINE__,__FILE__);
$this->db->next_record();
if (($false_id = $this->db->f(0)) > $GLOBALS['egw_info']['server']['num_unsuccessful_id'])
{
//echo "<p>login_blocked: login='$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'] &&
// max. one mail each 5mins
$GLOBALS['egw_info']['server']['login_blocked_mail_time'] < time()-5*60)
{
// 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,$ip);
if(!is_object($GLOBALS['egw']->send))
{
$GLOBALS['egw']->send = CreateObject('phpgwapi.send');
}
$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 = CreateObject('phpgwapi.config','phpgwapi');
$config->read_repository();
$config->value('login_blocked_mail_time',time());
$config->save_repository();
}
return $blocked;
}
/**
* Verfy a peer server access request
*
* @param string $sessionid session id to verfiy
* @param string $kp3 ??
* @return bool verfied?
*/
function verify_server($sessionid, $kp3)
{
$GLOBALS['egw']->interserver = CreateObject('phpgwapi.interserver');
$this->sessionid = $sessionid;
$this->kp3 = $kp3;
$session = $this->read_session();
$this->session_flags = $session['session_flags'];
list($this->account_lid,$this->account_domain) = explode('@', $session['session_lid']);
if ($this->account_domain == '')
{
$this->account_domain = $GLOBALS['egw_info']['server']['default_domain'];
}
$GLOBALS['egw_info']['user']['kp3'] = $this->kp3;
$phpgw_info_flags = $GLOBALS['egw_info']['flags'];
$GLOBALS['egw_info']['flags'] = $phpgw_info_flags;
$this->update_dla();
$this->account_id = $GLOBALS['egw']->interserver->name2id($this->account_lid,'account_lid','u');
if (!$this->account_id)
{
return False;
}
$GLOBALS['egw_info']['user']['account_id'] = $this->account_id;
$this->read_repositories(@$GLOBALS['egw_info']['server']['cache_phpgw_info']);
/* init the crypto object before appsession call below */
$this->key = md5($this->kp3 . $this->sessionid . $GLOBALS['egw_info']['server']['encryptkey']);
$this->iv = $GLOBALS['egw_info']['server']['mcrypt_iv'];
$GLOBALS['egw']->crypto->init(array($this->key,$this->iv));
$GLOBALS['egw_info']['user'] = $this->user;
$GLOBALS['egw_info']['hooks'] = $this->hooks;
$GLOBALS['egw_info']['user']['session_ip'] = $session['session_ip'];
$GLOBALS['egw_info']['user']['passwd'] = base64_decode($this->appsession('password','phpgwapi'));
if ($userid_array[1] != $GLOBALS['egw_info']['user']['domain'])
{
if(is_object($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__
));
$GLOBALS['egw']->log->commit();
}
if(is_object($GLOBALS['egw']->crypto))
{
$GLOBALS['egw']->crypto->cleanup();
unset($GLOBALS['egw']->crypto);
}
return False;
}
if(@$GLOBALS['egw_info']['server']['sessions_checkip'])
{
if((PHP_OS != 'Windows') && (PHP_OS != 'WINNT') &&
(!$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__
));
$GLOBALS['egw']->log->commit();
}
if(is_object($GLOBALS['egw']->crypto))
{
$GLOBALS['egw']->crypto->cleanup();
unset($GLOBALS['egw']->crypto);
}
return False;
}
}
$GLOBALS['egw']->acl->acl($this->account_id);
$GLOBALS['egw']->accounts->accounts($this->account_id);
$GLOBALS['egw']->preferences->preferences($this->account_id);
$GLOBALS['egw']->applications->applications($this->account_id);
if (! $this->account_lid)
{
if(is_object($GLOBALS['egw']->log))
{
// This needs some better wording
$GLOBALS['egw']->log->message(array(
'text' => 'W-VerifySession, account_id is empty',
'line' => __LINE__,
'file' => __FILE__
));
$GLOBALS['egw']->log->commit();
}
if(is_object($GLOBALS['egw']->crypto))
{
$GLOBALS['egw']->crypto->cleanup();
unset($GLOBALS['egw']->crypto);
}
return False;
}
else
{
return True;
}
}
/**
* Validate a peer server login request
*
* @param string $login login name
* @param string $password password
* @return bool login ok?
*/
function create_server($login,$passwd)
{
$GLOBALS['egw']->interserver = CreateObject('phpgwapi.interserver');
// $this->login = $login;
$this->passwd = $passwd;
$this->clean_sessions();
$login_array = explode('@', $login);
// $this->account_lid = $login_array[0];
$now = time();
$this->split_login_domain($login,$this->account_lid,$this->account_domain);
$this->login = $this->account_lid . '@' . $this->account_domain;
$serverdata = array(
'server_name' => $this->account_domain,
'username' => $this->account_lid,
'password' => $passwd
);
if (!$GLOBALS['egw']->interserver->auth($serverdata))
{
return False;
exit;
}
if (!$GLOBALS['egw']->interserver->exists($this->account_lid))
{
$this->account_id = $GLOBALS['egw']->interserver->name2id($this->account_lid,'account_lid','u');
}
$GLOBALS['egw_info']['user']['account_id'] = $this->account_id;
$GLOBALS['egw']->interserver->serverid = $this->account_id;
$this->sessionid = md5($GLOBALS['egw']->common->randomstring(10));
$this->kp3 = md5($GLOBALS['egw']->common->randomstring(15));
/* re-init the crypto object */
$this->key = md5($this->kp3 . $this->sessionid . $GLOBALS['egw_info']['server']['encryptkey']);
$this->iv = $GLOBALS['egw_info']['server']['mcrypt_iv'];
$GLOBALS['egw']->crypto->init(array($this->key,$this->iv));
//$this->read_repositories(False);
$GLOBALS['egw_info']['user'] = $this->user;
$GLOBALS['egw_info']['hooks'] = $this->hooks;
$this->appsession('password','phpgwapi',base64_encode($this->passwd));
$session_flags = 'S';
$user_ip = $this->getuser_ip();
$GLOBALS['egw']->db->transaction_begin();
$this->register_session($login,$user_ip,$now,$session_flags);
$this->log_access($this->sessionid,$login,$user_ip,$this->account_id);
$this->appsession('account_previous_login','phpgwapi',$GLOBALS['egw']->auth->previous_login);
$GLOBALS['egw']->accounts->update_lastlogin($this->account_id,$user_ip);
$GLOBALS['egw']->db->transaction_commit();
return array($this->sessionid,$this->kp3);
}
/**
* Functions for appsession data and session cache
*/
/**
* Is this also useless?? (skwashd)
*/
function read_repositories($cached='',$write_cache=True)
{
$GLOBALS['egw']->acl->acl($this->account_id);
accounts::getInstance()->setAccountId($this->account_id);
$GLOBALS['egw']->preferences->preferences($this->account_id);
$GLOBALS['egw']->applications->applications($this->account_id);
if(@$cached)
{
$this->user = $this->appsession('phpgw_info_cache','phpgwapi');
if(!empty($this->user))
{
$GLOBALS['egw']->preferences->data = $this->user['preferences'];
if (!isset($GLOBALS['egw_info']['apps']) || !is_array($GLOBALS['egw_info']['apps']))
{
$GLOBALS['egw']->applications->read_installed_apps();
}
}
else
{
$this->setup_cache($write_cache);
}
}
else
{
$this->setup_cache($write_cache);
}
$this->hooks = $GLOBALS['egw']->hooks->read();
}
/**
* Is this also useless?? (skwashd)
*/
function setup_cache($write_cache=True)
{
$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'] = $GLOBALS['egw']->applications->read_repository();
//@reset($this->data['user']['apps']);
$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;
if(@$GLOBALS['egw_info']['server']['cache_phpgw_info'] && $write_cache)
{
$this->delete_cache();
$this->appsession('phpgw_info_cache','phpgwapi',$this->user);
}
}
/**
* This looks to be useless
* This will capture everything in the $GLOBALS['egw_info'] including server info,
* and store it in appsessions. This is really incompatible with any type of restoring
* from appsession as the saved user info is really in ['user'] rather than the root of
* the structure, which is what this class likes.
*/
function save_repositories()
{
$phpgw_info_temp = $GLOBALS['egw_info'];
$phpgw_info_temp['user']['kp3'] = '';
$phpgw_info_temp['flags'] = array();
if ($GLOBALS['egw_info']['server']['cache_phpgw_info'])
{
$this->appsession('phpgw_info_cache','phpgwapi',$phpgw_info_temp);
}
}
function restore()
{
$sessionData = $this->appsession('sessiondata');
if (!empty($sessionData) && is_array($sessionData))
{
foreach($sessionData as $key => $value)
{
global $$key;
$$key = $value;
$this->variableNames[$key] = 'registered';
// echo 'restored: '.$key.', ' . $value . '<br>';
}
}
}
/**
* Save the current values of all registered variables
*/
function save()
{
if (is_array($this->variableNames))
{
reset($this->variableNames);
while(list($key, $value) = each($this->variableNames))
{
if ($value == 'registered')
{
global $$key;
$sessionData[$key] = $$key;
}
}
$this->appsession('sessiondata','',$sessionData);
}
}
/**
* Create a list a variable names, which data needs to be restored
*
* @param string $_variableName name of variable to be registered
*/
function register($_variableName)
{
$this->variableNames[$_variableName]='registered';
#print 'registered '.$_variableName.'<br>';
}
/**
* Mark variable as unregistered
*
* @param string $_variableName name of variable to deregister
*/
function unregister($_variableName)
{
$this->variableNames[$_variableName]='unregistered';
#print 'unregistered '.$_variableName.'<br>';
}
/**
* Check if we have a variable registred already
*
* @param string $_variableName name of variable to check
* @return bool was the variable found?
*/
function is_registered($_variableName)
{
if ($this->variableNames[$_variableName] == 'registered')
{
return True;
}
else
{
return False;
}
}
/**
* Additional tracking of user actions - prevents reposts/use of back button
*
* @deprecated not used in eGroupWare
* @author skwashd
* @return string current history id
*/
function generate_click_history()
{
if(!isset($this->history_id))
{
$this->history_id = md5($this->login . time());
$history = $this->appsession($location = 'history', $appname = 'phpgwapi');
if(count($history) >= $GLOBALS['egw_info']['server']['max_history'])
{
array_shift($history);
$this->appsession($location = 'history', $appname = 'phpgwapi', $history);
}
}
return $this->history_id;
}
/**
* Detects if the page has already been called before - good for forms
*
* @deprecated not used in eGroupWare
* @author skwashd
* @param bool $diplay_error when implemented will use the generic error handling code
* @return True if called previously, else False - call ok
*/
function is_repost($display_error = False)
{
$history = $this->appsession($location = 'history', $appname = 'phpgwapi');
if(isset($history[$_GET['click_history']]))
{
if($display_error)
{
$GLOBALS['egw']->redirect_link('/error.php', 'type=repost');//more on this later :)
}
else
{
return True; //handled by the app
}
}
else
{
$history[$_GET['click_history']] = True;
$this->appsession($location = 'history', $appname = 'phpgwapi', $history);
return False;
}
}
/**
* 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 $extravars query string arguements as string or array (prefered)
* @return string generated url
*/
function link($url, $extravars = '')
{
//echo "<p>session::link(url='$url',extravars='".print_r($extravars,True)."')";
if ($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']) && $GLOBALS['egw_info']['server']['enforce_ssl']) // && !$_SERVER['HTTPS']) imho https should always be a full path - skwashd
{
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['sessionid'] = $this->sessionid;
$vars['kp3'] = $this->kp3;
$vars['domain'] = $this->account_domain;
}
// check if the url already contains a query and ensure that vars is an array and all strings are in extravars
list($url,$othervars) = explode('?',$url);
if ($extravars && is_array($extravars))
{
$vars += $extravars;
$extravars = $othervars;
}
else
{
if ($othervars) $extravars .= '&'.$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;
}
/**
* The remaining methods are abstract - as they are unique for each session handler
*/
/**
* Load user's session information
*
* The sessionid of the session to read is passed in the class-var $this->sessionid
*
* @return mixed the session data
*/
function read_session()
{}
/**
* Remove stale sessions out of the database
*/
function clean_sessions()
{}
/**
* Set paramaters for cookies - only implemented in PHP4 sessions
*
* @param string $domain domain name to use in cookie
* @param string $path='/' path to use in cookie
*/
function set_cookie_params($domain,$path='/')
{}
/**
* Create a new session id, called by session::create()
*
* @return string a new session id
*/
function new_session_id()
{
# when synchronizing using syncml, we already have php4 based session started
# and we are currently not allowed to change the sessionid later
# to solve this problem, we simply return the current session_id
if(basename($_SERVER['SCRIPT_FILENAME']) == 'rpc.php' && session_id() != '') {
return session_id();
}
return md5($GLOBALS['egw']->common->randomstring(15));
}
/**
* Create a new session
*
* @param string $login user login
* @param string $user_ip users ip address
* @param int $now time now as a unix timestamp
* @param string $session_flags A = Anonymous, N = Normal
*/
function register_session($login,$user_ip,$now,$session_flags)
{}
/**
* Update the date last active info for the session, so the login does not expire
*
* @return bool did it suceed?
*/
function update_dla()
{}
/**
* Terminate a session
*
* @param string $sessionid the id of the session to be terminated
* @param string $kp3 - NOT SURE
* @return bool did it suceed?
*/
function destroy($sessionid, $kp3)
{}
/**
* Functions for appsession data and session cache
*/
/**
* Delete all data from the session cache for a user
*
* @param int $accountid user account id, defaults to current user (optional)
*/
function delete_cache($accountid='')
{}
/**
* Stores or retrieves information from the sessions cache
*
* @param string $location identifier for data
* @param string $appname name of app which is responsbile for the data
* @param mixed $data data to be stored, if left blank data is retreived (optional)
* @return mixed data from cache, only returned if $data arg is not used
*/
function appsession($location = 'default', $appname = '', $data = '##NOTHING##')
{}
/**
* Get list of normal / non-anonymous sessions
* Note: The data from the session-files get cached in the app_session phpgwapi/php4_session_cache
*
* @author ralfbecker
* @param int $start session to start at
* @param string $order field to sort on
* @param string $sort sort order
* @param bool $all_no_sort list all with out sorting (optional) default False
* @return array info for all current sessions
*/
function list_sessions($start,$order,$sort,$all_no_sort = False)
{}
/**
* Get the number of normal / non-anonymous sessions
*
* @author ralfbecker
* @return int number of sessions
*/
function total()
{}
}
if(empty($GLOBALS['egw_info']['server']['sessions_type']))
{
$GLOBALS['egw_info']['server']['sessions_type'] = 'php4'; // the more performant default
}
// for php4 sessions, check if the extension is loaded, try loading it and fallback to db sessions if not
if (substr($GLOBALS['egw_info']['server']['sessions_type'],0,4) == 'php4' && !extension_loaded('session'))
{
// some constanst for pre php4.3
if (!defined('PHP_SHLIB_SUFFIX'))
{
define('PHP_SHLIB_SUFFIX',strtoupper(substr(PHP_OS, 0,3)) == 'WIN' ? 'dll' : 'so');
}
if (!defined('PHP_SHLIB_PREFIX'))
{
define('PHP_SHLIB_PREFIX',PHP_SHLIB_SUFFIX == 'dll' ? 'php_' : '');
}
if (!function_exists('dl') || !@dl(PHP_SHLIB_PREFIX.'session'.'.'.PHP_SHLIB_SUFFIX))
{
$GLOBALS['egw_info']['server']['sessions_type'] = 'db'; // fallback if we have no php sessions support
}
}
include_once(EGW_API_INC.'/class.sessions_'.substr($GLOBALS['egw_info']['server']['sessions_type'],0,4).'.inc.php');
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