mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-24 15:48:55 +01:00
473 lines
15 KiB
PHP
473 lines
15 KiB
PHP
<?php
|
|
/**
|
|
* EGroupware EMailAdmin: Mail account credentials
|
|
*
|
|
* @link http://www.stylite.de
|
|
* @package emailadmin
|
|
* @author Ralf Becker <rb@stylite.de>
|
|
* @copyright (c) 2013-14 by Ralf Becker <rb@stylite.de>
|
|
* @author Stylite AG <info@stylite.de>
|
|
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
* Mail account credentials are stored in egw_ea_credentials for given
|
|
* acocunt-id, users and types (imap, smtp and optional admin connection).
|
|
*
|
|
* Passwords in credentials are encrypted with either user password from session
|
|
* or the database password.
|
|
*/
|
|
class emailadmin_credentials
|
|
{
|
|
const APP = 'emailadmin';
|
|
const TABLE = 'egw_ea_credentials';
|
|
const USER_EDITABLE_JOIN = 'JOIN egw_ea_accounts ON egw_ea_accounts.acc_id=egw_ea_credentials.acc_id AND acc_user_editable=';
|
|
|
|
/**
|
|
* Credentials for type IMAP
|
|
*/
|
|
const IMAP = 1;
|
|
/**
|
|
* Credentials for type SMTP
|
|
*/
|
|
const SMTP = 2;
|
|
/**
|
|
* Credentials for admin connection
|
|
*/
|
|
const ADMIN = 8;
|
|
/**
|
|
* All credentials IMAP|SMTP|ADMIN
|
|
*/
|
|
const ALL = 11;
|
|
|
|
/**
|
|
* Password in cleartext
|
|
*/
|
|
const CLEARTEXT = 0;
|
|
/**
|
|
* Password encrypted with user password
|
|
*/
|
|
const USER = 1;
|
|
/**
|
|
* Password encrypted with system secret
|
|
*/
|
|
const SYSTEM = 2;
|
|
|
|
/**
|
|
* Translate type to prefix
|
|
*
|
|
* @var array
|
|
*/
|
|
protected static $type2prefix = array(
|
|
self::IMAP => 'acc_imap_',
|
|
self::SMTP => 'acc_smtp_',
|
|
self::ADMIN => 'acc_imap_admin_',
|
|
);
|
|
|
|
/**
|
|
* Reference to global db object
|
|
*
|
|
* @var egw_db
|
|
*/
|
|
static protected $db;
|
|
|
|
/**
|
|
* Mcrypt instance initialised with system specific key
|
|
*
|
|
* @var ressource
|
|
*/
|
|
static protected $system_mcrypt;
|
|
|
|
/**
|
|
* Mcrypt instance initialised with user password from session
|
|
*
|
|
* @var ressource
|
|
*/
|
|
static protected $user_mcrypt;
|
|
|
|
/**
|
|
* Cache for credentials to minimize database access
|
|
*
|
|
* @var array
|
|
*/
|
|
protected static $cache = array();
|
|
|
|
/**
|
|
* Read credentials for a given mail account
|
|
*
|
|
* @param int $acc_id
|
|
* @param int $type =null default return all credentials
|
|
* @param int|array $account_id =null default use current user or all (in that order)
|
|
* @return array with values for (imap|smtp|admin)_(username|password|cred_id)
|
|
*/
|
|
public static function read($acc_id, $type=null, $account_id=null)
|
|
{
|
|
if (is_null($type)) $type = self::ALL;
|
|
if (is_null($account_id))
|
|
{
|
|
$account_id = array(0, $GLOBALS['egw_info']['user']['account_id']);
|
|
}
|
|
|
|
// check cache, if nothing found, query database
|
|
// check assumes always same accounts (eg. 0=all plus own account_id) are asked
|
|
if (!isset(self::$cache[$acc_id]) ||
|
|
!($rows = array_intersect_key(self::$cache[$acc_id], array_flip((array)$account_id))))
|
|
{
|
|
$rows = self::$db->select(self::TABLE, '*', array(
|
|
'acc_id' => $acc_id,
|
|
'account_id' => $account_id,
|
|
'(cred_type & '.(int)$type.') > 0', // postgreSQL require > 0, or gives error as it expects boolean
|
|
), __LINE__, __FILE__, false,
|
|
// account_id DESC ensures 0=all allways overwrite (old user-specific credentials)
|
|
'ORDER BY account_id ASC', self::APP);
|
|
//error_log(__METHOD__."($acc_id, $type, ".array2string($account_id).") nothing in cache");
|
|
}
|
|
else
|
|
{
|
|
ksort($rows); // ORDER BY account_id ASC
|
|
|
|
// flatten account_id => cred_type => row array again, to have format like from database
|
|
$rows = call_user_func_array('array_merge', $rows);
|
|
//error_log(__METHOD__."($acc_id, $type, ".array2string($account_id).") read from cache ".array2string($rows));
|
|
}
|
|
$results = array();
|
|
foreach($rows as $row)
|
|
{
|
|
// update cache (only if we have database-iterator and all credentials asked!)
|
|
if (!is_array($rows) && $type == self::ALL)
|
|
{
|
|
self::$cache[$acc_id][$row['account_id']][$row['cred_type']] = $row;
|
|
//error_log(__METHOD__."($acc_id, $type, ".array2string($account_id).") stored to cache ".array2string($row));
|
|
}
|
|
$password = self::decrypt($row);
|
|
|
|
foreach(self::$type2prefix as $pattern => $prefix)
|
|
{
|
|
if ($row['cred_type'] & $pattern)
|
|
{
|
|
$results[$prefix.'username'] = $row['cred_username'];
|
|
$results[$prefix.'password'] = $password;
|
|
$results[$prefix.'cred_id'] = $row['cred_id'];
|
|
$results[$prefix.'account_id'] = $row['account_id'];
|
|
$results[$prefix.'pw_enc'] = $row['cred_pw_enc'];
|
|
}
|
|
}
|
|
}
|
|
return $results;
|
|
}
|
|
|
|
/**
|
|
* Generate username according to acc_imap_logintype and fetch password from session
|
|
*
|
|
* @param array $data values for acc_imap_logintype and acc_domain
|
|
* @param boolean $set_identity =true true: also set identity values realname&email, if not yet set
|
|
* @return array with values for keys 'acc_(imap|smtp)_(username|password|cred_id)'
|
|
*/
|
|
public static function from_session(array $data, $set_identity=true)
|
|
{
|
|
switch($data['acc_imap_logintype'])
|
|
{
|
|
case 'standard':
|
|
$username = $GLOBALS['egw_info']['user']['account_lid'];
|
|
break;
|
|
|
|
case 'vmailmgr':
|
|
$username = $GLOBALS['egw_info']['user']['account_lid'].'@'.$data['acc_domain'];
|
|
break;
|
|
|
|
case 'email':
|
|
$username = $GLOBALS['egw_info']['user']['account_email'];
|
|
break;
|
|
|
|
case 'uidNumber':
|
|
$username = 'u'.$GLOBALS['egw_info']['user']['account_id'].'@'.$data['acc_domain'];
|
|
break;
|
|
|
|
case 'admin':
|
|
// data should have been stored in credentials table
|
|
throw new egw_exception_assertion_failed('data[acc_imap_logintype]=admin and no stored username/password for data[acc_id]='.$data['acc_id'].'!');
|
|
|
|
default:
|
|
throw new egw_exception_wrong_parameter("Unknown data[acc_imap_logintype]=".array2string($data['acc_imap_logintype']).'!');
|
|
}
|
|
$password = base64_decode(egw_cache::getSession('phpgwapi', 'password'));
|
|
$realname = !$set_identity || $data['ident_realname'] ? $data['ident_realname'] :
|
|
$GLOBALS['egw_info']['user']['account_fullname'];
|
|
$email = !$set_identity || $data['ident_email'] ? $data['ident_email'] :
|
|
$GLOBALS['egw_info']['user']['account_email'];
|
|
|
|
return array(
|
|
'ident_realname' => $realname,
|
|
'ident_email' => $email,
|
|
'acc_imap_username' => $username,
|
|
'acc_imap_password' => $password,
|
|
'acc_imap_cred_id' => $data['acc_imap_logintype'], // to NOT store it
|
|
'acc_imap_account_id' => 'c',
|
|
) + ($data['acc_smtp_auth_session'] ? array(
|
|
// only set smtp
|
|
'acc_smtp_username' => $username,
|
|
'acc_smtp_password' => $password,
|
|
'acc_smtp_cred_id' => $data['acc_imap_logintype'], // to NOT store it
|
|
'acc_smtp_account_id' => 'c',
|
|
) : array());
|
|
}
|
|
|
|
/**
|
|
* Write and encrypt credentials
|
|
*
|
|
* @param int $acc_id id of account
|
|
* @param string $username
|
|
* @param string $password cleartext password to write
|
|
* @param int $type self::IMAP, self::SMTP or self::ADMIN
|
|
* @param int $account_id if of user-account for whom credentials are
|
|
* @param int $cred_id =null id of existing credentials to update
|
|
* @param ressource $mcrypt =null mcrypt ressource for user, default calling self::init_crypt(true)
|
|
* @return int cred_id
|
|
*/
|
|
public static function write($acc_id, $username, $password, $type, $account_id=0, $cred_id=null, $mcrypt=null)
|
|
{
|
|
//error_log(__METHOD__."(acc_id=$acc_id, '$username', \$password, type=$type, account_id=$account_id, cred_id=$cred_id)");
|
|
if (!empty($cred_id) && !is_numeric($cred_id) || !is_numeric($account_id))
|
|
{
|
|
//error_log(__METHOD__."($acc_id, '$username', \$password, $type, $account_id, ".array2string($cred_id).") not storing session credentials!");
|
|
return; // do NOT store credentials from session of current user!
|
|
}
|
|
// no need to write empty usernames, but delete existing row
|
|
if ((string)$username === '')
|
|
{
|
|
if ($cred_id) self::$db->delete(self::TABLE, array('cred_id' => $cred_id), __LINE__, __FILE__, self::APP);
|
|
return; // nothing to save
|
|
}
|
|
$pw_enc = self::CLEARTEXT;
|
|
$data = array(
|
|
'acc_id' => $acc_id,
|
|
'account_id' => $account_id,
|
|
'cred_username' => $username,
|
|
'cred_password' => (string)$password === '' ? '' :
|
|
self::encrypt($password, $account_id, $pw_enc, $mcrypt),
|
|
'cred_type' => $type,
|
|
'cred_pw_enc' => $pw_enc,
|
|
);
|
|
//error_log(__METHOD__."($acc_id, '$username', '$password', $type, $account_id, $cred_id, $mcrypt) storing ".array2string($data).' '.function_backtrace());
|
|
if ($cred_id > 0)
|
|
{
|
|
self::$db->update(self::TABLE, $data, array('cred_id' => $cred_id), __LINE__, __FILE__, self::APP);
|
|
}
|
|
else
|
|
{
|
|
self::$db->insert(self::TABLE, $data, array(
|
|
'acc_id' => $acc_id,
|
|
'account_id' => $account_id,
|
|
'cred_type' => $type,
|
|
), __LINE__, __FILE__, self::APP);
|
|
$cred_id = self::$db->get_last_insert_id(self::TABLE, 'cred_id');
|
|
}
|
|
// invalidate cache
|
|
unset(self::$cache[$acc_id][$account_id]);
|
|
|
|
//error_log(__METHOD__."($acc_id, '$username', \$password, $type, $account_id) returning $cred_id");
|
|
return $cred_id;
|
|
}
|
|
|
|
/**
|
|
* Delete credentials from database
|
|
*
|
|
* @param int $acc_id
|
|
* @param int|array $account_id =null
|
|
* @param int $type =self::ALL self::IMAP, self::SMTP or self::ADMIN
|
|
* @return int number of rows deleted
|
|
*/
|
|
public static function delete($acc_id, $account_id=null, $type=self::ALL)
|
|
{
|
|
if (!($acc_id > 0) && !isset($account_id))
|
|
{
|
|
throw new egw_exception_wrong_parameter(__METHOD__."() no acc_id AND no account_id parameter!");
|
|
}
|
|
$where = array();
|
|
if ($acc_id > 0) $where['acc_id'] = $acc_id;
|
|
if (isset($account_id)) $where['account_id'] = $account_id;
|
|
if ($type != self::ALL) $where[] = '(cred_type & '.(int)$type.') > 0'; // postgreSQL require > 0, or gives error as it expects boolean
|
|
|
|
self::$db->delete(self::TABLE, $where, __LINE__, __FILE__, self::APP);
|
|
|
|
// invalidate cache: we allways unset everything about an account to simplify cache handling
|
|
foreach($acc_id > 0 ? (array)$acc_id : array_keys(self::$cache) as $acc_id)
|
|
{
|
|
unset(self::$cache[$acc_id]);
|
|
}
|
|
$ret = self::$db->affected_rows();
|
|
//error_log(__METHOD__."($acc_id, ".array2string($account_id).", $type) affected $ret rows");
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Encrypt password for storing in database
|
|
*
|
|
* @param string $password cleartext password
|
|
* @param int $account_id user-account password is for
|
|
* @param int &$pw_enc on return encryption used
|
|
* @param ressource $mcrypt =null mcrypt ressource for user, default calling self::init_crypt(true)
|
|
* @return string encrypted password
|
|
*/
|
|
protected static function encrypt($password, $account_id, &$pw_enc, $mcrypt=null)
|
|
{
|
|
if ($account_id > 0 && $account_id == $GLOBALS['egw_info']['user']['account_id'] &&
|
|
($mcrypt || ($mcrypt = self::init_crypt(true))))
|
|
{
|
|
$pw_enc = self::USER;
|
|
$password = mcrypt_generic($mcrypt, $password);
|
|
}
|
|
elseif (($mcrypt = self::init_crypt(false)))
|
|
{
|
|
$pw_enc = self::SYSTEM;
|
|
$password = mcrypt_generic($mcrypt, $password);
|
|
}
|
|
else
|
|
{
|
|
$pw_enc = self::CLEARTEXT;
|
|
}
|
|
//error_log(__METHOD__."(, $account_id, , $mcrypt) pw_enc=$pw_enc returning ".array2string(base64_encode($password)));
|
|
return base64_encode($password);
|
|
}
|
|
|
|
/**
|
|
* Decrypt password from database
|
|
*
|
|
* @param array $row database row
|
|
* @param ressource $mcrypt =null mcrypt ressource for user, default calling self::init_crypt(true)
|
|
*/
|
|
protected static function decrypt(array $row, $mcrypt=null)
|
|
{
|
|
switch ($row['cred_pw_enc'])
|
|
{
|
|
case self::CLEARTEXT:
|
|
return base64_decode($row['cred_password']);
|
|
|
|
case self::USER:
|
|
case self::SYSTEM:
|
|
if (($row['cred_pw_enc'] != self::USER || !$mcrypt) &&
|
|
!($mcrypt = self::init_crypt($row['cred_pw_enc'] == self::USER)))
|
|
{
|
|
throw new egw_exception_wrong_parameter("Password encryption type $row[cred_pw_enc] NOT available for mail account #$row[acc_id] and user #$row[account_id]/$row[cred_username]!");
|
|
}
|
|
return !empty($row['cred_password']) ? trim(mdecrypt_generic($mcrypt, base64_decode($row['cred_password']))) : '';
|
|
}
|
|
throw new egw_exception_wrong_parameter("Unknow password encryption type $row[cred_pw_enc]!");
|
|
}
|
|
|
|
/**
|
|
* Hook called when user changes his password, to re-encode his credentials with his new password
|
|
*
|
|
* It also changes all user credentials encoded with system password!
|
|
*
|
|
* It only changes credentials from user-editable accounts, as user probably
|
|
* does NOT know password set by admin!
|
|
*
|
|
* @param array $data values for keys 'old_passwd', 'new_passwd', 'account_id'
|
|
*/
|
|
static public function changepassword(array $data)
|
|
{
|
|
if (empty($data['old_passwd'])) return;
|
|
|
|
$old_mcrypt = null;
|
|
foreach(self::$db->select(self::TABLE, self::TABLE.'.*', array(
|
|
'account_id' => $data['account_id']
|
|
),__LINE__, __FILE__, false, '', 'emailadmin', 0, self::USER_EDITABLE_JOIN.self::$db->quote(true, 'bool')) as $row)
|
|
{
|
|
if (!isset($old_mcrypt))
|
|
{
|
|
$old_mcrypt = self::init_crypt($data['old_passwd']);
|
|
$new_mcrypt = self::init_crypt($data['new_passwd']);
|
|
if (!$old_mcrypt && !$new_mcrypt) return;
|
|
}
|
|
$password = self::decrypt($row, $old_mcrypt);
|
|
|
|
self::write($row['acc_id'], $row['cred_username'], $password, $row['cred_type'],
|
|
$row['account_id'], $row['cred_id'], $new_mcrypt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if session encryption is configured, possible and initialise it
|
|
*
|
|
* @param boolean|string $user =false true: use user-password from session,
|
|
* false: database password or string with password to use
|
|
* @param string $algo ='tripledes'
|
|
* @param string $mode ='ecb'
|
|
* @return ressource|boolean mcrypt ressource to use or false if not available
|
|
*/
|
|
static public function init_crypt($user=false, $algo='tripledes',$mode='ecb')
|
|
{
|
|
if (is_string($user))
|
|
{
|
|
// do NOT use/set/change static object
|
|
}
|
|
elseif ($user)
|
|
{
|
|
$mcrypt =& self::$user_mcrypt;
|
|
}
|
|
else
|
|
{
|
|
$mcrypt =& self::$system_mcrypt;
|
|
}
|
|
if (!isset($mcrypt))
|
|
{
|
|
if (is_string($user))
|
|
{
|
|
$key = $user;
|
|
}
|
|
elseif ($user)
|
|
{
|
|
$session_key = egw_cache::getSession('phpgwapi', 'password');
|
|
if (empty($session_key))
|
|
{
|
|
error_log(__METHOD__."() no session password available!");
|
|
return false;
|
|
}
|
|
$key = base64_decode($session_key);
|
|
}
|
|
else
|
|
{
|
|
$key = self::$db->Password;
|
|
}
|
|
if (!check_load_extension('mcrypt'))
|
|
{
|
|
error_log(__METHOD__."() required PHP extension mcrypt not loaded and can not be loaded, passwords can be NOT encrypted!");
|
|
$mcrypt = false;
|
|
}
|
|
elseif (!($mcrypt = mcrypt_module_open($algo, '', $mode, '')))
|
|
{
|
|
error_log(__METHOD__."() could not mcrypt_module_open(algo='$algo','',mode='$mode',''), passwords can be NOT encrypted!");
|
|
$mcrypt = false;
|
|
}
|
|
else
|
|
{
|
|
$iv_size = mcrypt_enc_get_iv_size($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);
|
|
|
|
$key_size = mcrypt_enc_get_key_size($mcrypt);
|
|
if (bytes($key) > $key_size) $key = cut_bytes($key,0,$key_size-1);
|
|
|
|
if (mcrypt_generic_init($mcrypt, $key, $iv) < 0)
|
|
{
|
|
error_log(__METHOD__."() could not initialise mcrypt, passwords can be NOT encrypted!");
|
|
$mcrypt = false;
|
|
}
|
|
}
|
|
}
|
|
//error_log(__METHOD__."(".array2string($user).") key=".array2string($key)." returning ".array2string($mcrypt));
|
|
return $mcrypt;
|
|
}
|
|
|
|
/**
|
|
* Init our static properties
|
|
*/
|
|
static public function init_static()
|
|
{
|
|
self::$db = isset($GLOBALS['egw_setup']) ? $GLOBALS['egw_setup']->db : $GLOBALS['egw']->db;
|
|
}
|
|
}
|
|
emailadmin_credentials::init_static();
|