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egroupware_official/emailadmin/inc/class.emailadmin_smtp_ldap.inc.php

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<?php
/**
* EGroupware EMailAdmin: generic base class for SMTP configuration via LDAP
*
* @link http://www.stylite.de
* @package emailadmin
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2010-13 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
/**
* Generic base class for SMTP configuration via LDAP
*
* This class uses just inetOrgPerson schema to store primary mail address and aliases
*
* Aliases are stored as aditional mail Attributes. The primary mail address is the first one.
* This schema does NOT support forwarding or disabling of an account for mail.
*
* Aliases, forwards, forward-only and quota attribute can be stored in same multivalued attribute
* with different prefixes.
*
* Please do NOT copy this class! Extend it and set the constants different.
*
* Please note: schema names muse use correct case (eg. "inetOrgPerson"),
* while attribute name muse use lowercase, as LDAP returns them as keys in lowercase!
*/
class emailadmin_smtp_ldap extends emailadmin_smtp
{
/**
* Name of schema, has to be in the right case!
*/
const SCHEMA = 'inetOrgPerson';
/**
* Filter for users
*/
const USER_FILTER = '(objectClass=posixAccount)';
/**
* Name of schema for groups, has to be in the right case!
*/
const GROUP_SCHEMA = 'posixGroup';
/**
* Attribute to enable mail for an account, OR false if existence of ALIAS_ATTR is enough for mail delivery
*/
const MAIL_ENABLE_ATTR = false;
/**
* Attribute for aliases OR false to use mail
*/
const ALIAS_ATTR = false;
/**
* Caseinsensitive prefix for aliases (eg. "smtp:"), aliases get added with it and only aliases with it are reported
*/
const ALIAS_PREFIX = '';
/**
* Primary mail address required as an alias too: true or false
*/
const REQUIRE_MAIL_AS_ALIAS = false;
/**
* Attribute for forwards OR false if not possible
*/
const FORWARD_ATTR = false;
/**
* Caseinsensitive prefix for forwards (eg. "forward:"), forwards get added with it and only forwards with it are reported
*/
const FORWARD_PREFIX = '';
/**
* Attribute to only forward mail, OR false if not available
*/
const FORWARD_ONLY_ATTR = false;
/**
* Value of forward-only attribute, if empty any value will switch forward only on (checked with =*)
*/
const FORWARD_ONLY = 'forwardOnly';
/**
* Attribute for mailbox, to which mail gets delivered OR false if not supported
*/
const MAILBOX_ATTR = false;
/**
* Attribute for quota limit of user in MB
*/
const QUOTA_ATTR = false;
/**
* Caseinsensitive prefix for quota (eg. "quota:"), quota get added with it and only quota with it are reported
*/
const QUOTA_PREFIX = '';
/**
* Internal quota in MB is multiplicated with this factor before stored in LDAP
*/
const QUOTA_FACTOR = 1048576;
/**
* Attribute for user name
*/
const USER_ATTR = 'uid';
/**
* Attribute for numeric user id (optional)
*/
const USERID_ATTR = 'uidnumber';
/**
* Base for all searches, defaults to $GLOBALS['egw_info']['server']['ldap_context'] and can be set via setBase($base)
*
* @var string
*/
protected $search_base;
/**
* Special search filter for getUserData only
*
* @var string
*/
protected $search_filter;
/**
* Log all LDAP writes / actions to error_log
*/
var $debug = false;
/**
* from here on implementation, please do NOT copy but extend it!
*/
/**
* Constructor
*
* @param string $defaultDomain=null
*/
function __construct($defaultDomain=null)
{
parent::__construct($defaultDomain);
if (empty($this->search_base))
{
$this->setBase($GLOBALS['egw_info']['server']['ldap_context']);
}
}
/**
* Return description for EMailAdmin
*
* @return string
*/
public static function description()
{
return 'LDAP ('.static::SCHEMA.')';
}
/**
* Set ldap search filter for aliases and forwards (getUserData)
*
* @param string $filter
*/
function setFilter($filter)
{
$this->search_filter = $filter;
}
/**
* Set ldap search base, default $GLOBALS['egw_info']['server']['ldap_context']
*
* @param string $base
*/
function setBase($base)
{
$this->search_base = $base;
}
/**
* Hook called on account creation
*
* @param array $_hookValues values for keys 'account_email', 'account_firstname', 'account_lastname', 'account_lid'
* @return boolean true on success, false on error writing to ldap
*/
function addAccount($_hookValues)
{
$mailLocalAddress = $_hookValues['account_email'] ? $_hookValues['account_email'] :
common::email_address($_hookValues['account_firstname'],
$_hookValues['account_lastname'],$_hookValues['account_lid'],$this->defaultDomain);
$ds = $this->getLdapConnection();
$filter = static::USER_ATTR."=".ldap::quote($_hookValues['account_lid']);
if (!($sri = @ldap_search($ds, $this->search_base, $filter)))
{
return false;
}
$allValues = ldap_get_entries($ds, $sri);
$accountDN = $allValues[0]['dn'];
$objectClasses = $allValues[0]['objectclass'];
unset($objectClasses['count']);
// add our mail schema, if not already set
if(!in_array(static::SCHEMA,$objectClasses) && !in_array(strtolower(static::SCHEMA),$objectClasses))
{
$objectClasses[] = static::SCHEMA;
}
// the new code for postfix+cyrus+ldap
$newData = array(
'mail' => $mailLocalAddress,
'objectclass' => $objectClasses
);
// does schema have explicit alias attribute AND require mail added as alias too
if (static::ALIAS_ATTR && static::REQUIRE_MAIL_AS_ALIAS)
{
$newData[static::ALIAS_ATTR] = static::ALIAS_PREFIX.$mailLocalAddress;
}
// does schema support enabling/disabling mail via attribute
if (static::MAIL_ENABLE_ATTR)
{
$newData[static::MAIL_ENABLE_ATTR] = static::MAIL_ENABLED;
}
// does schema support an explicit mailbox name --> set it
if (static::MAILBOX_ATTR)
{
$newData[static::MAILBOX_ATTR] = self::mailbox_addr($_hookValues);
}
if (!($ret = ldap_mod_replace($ds, $accountDN, $newData)) || $this->debug)
{
error_log(__METHOD__.'('.array2string(func_get_args()).") --> ldap_mod_replace(,'$accountDN',".
array2string($newData).') returning '.array2string($ret).
(!$ret?' ('.ldap_error($ds).')':''));
}
return $ret;
}
/**
* Get all email addresses of an account
*
* @param string $_accountName
* @return array
*/
function getAccountEmailAddress($_accountName)
{
$emailAddresses = array();
$ds = $this->getLdapConnection();
$filter = '(&'.static::USER_FILTER.'('.static::USER_ATTR.'='.ldap::quote($_accountName).'))';
$attributes = array('dn', 'mail', static::ALIAS_ATTR);
$sri = @ldap_search($ds, $this->search_base, $filter, $attributes);
if ($sri)
{
$realName = trim($GLOBALS['egw_info']['user']['account_firstname'] . (!empty($GLOBALS['egw_info']['user']['account_firstname']) ? ' ' : '') . $GLOBALS['egw_info']['user']['account_lastname']);
$allValues = ldap_get_entries($ds, $sri);
if(isset($allValues[0]['mail']))
{
foreach($allValues[0]['mail'] as $key => $value)
{
if ($key === 'count') continue;
$emailAddresses[] = array (
'name' => $realName,
'address' => $value,
'type' => !$key ? 'default' : 'alternate',
);
}
}
if (static::ALIAS_ATTR && isset($allValues[0][static::ALIAS_ATTR]))
{
foreach(self::getAttributePrefix($allValues[0][static::ALIAS_ATTR], static::ALIAS_PREFIX) as $value)
{
$emailAddresses[] = array(
'name' => $realName,
'address' => $value,
'type' => 'alternate'
);
}
}
}
if ($this->debug) error_log(__METHOD__."('$_acountName') returning ".array2string($emailAddresses));
return $emailAddresses;
}
/**
* Get the data of a given user
*
* Multiple accounts may match, if an email address is specified.
* In that case only mail routing fields "uid", "mailbox" and "forward" contain values
* from all accounts!
*
* @param int|string $user numerical account-id, account-name or email address
* @param boolean $match_uid_at_domain=true true: uid@domain matches, false only an email or alias address matches
* @return array with values for keys 'mailLocalAddress', 'mailAlternateAddress' (array), 'mailForwardingAddress' (array),
* 'accountStatus' ("active"), 'quotaLimit' and 'deliveryMode' ("forwardOnly")
*/
function getUserData($user, $match_uid_at_domain=false)
{
$userData = array(
'mailbox' => array(),
'forward' => array(),
);
$ldap = $this->getLdapConnection();
if (is_numeric($user) && static::USERID_ATTR)
{
$filter = '('.static::USERID_ATTR.'='.(int)$user.')';
}
elseif (strpos($user, '@') === false)
{
if (is_numeric($user)) $user = $GLOBALS['egw']->accounts->id2name($user);
$filter = '(&'.static::USER_FILTER.'('.static::USER_ATTR.'='.ldap::quote($user).'))';
}
else // email address --> build filter by attributes defined in config
{
list($namepart, $domain) = explode('@', $user);
if (!empty($this->search_filter))
{
$filter = strtr($this->search_filter, array(
'%s' => ldap::quote($user),
'%u' => ldap::quote($namepart),
'%d' => ldap::quote($domain),
));
}
else
{
$filter = array('(mail='.ldap::quote($user).')');
if ($match_uid_at_domain) $filter[] = '('.static::USER_ATTR.'='.ldap::quote($namepart).')';
if (static::ALIAS_ATTR)
{
$filter[] = '('.static::ALIAS_ATTR.'='.static::ALIAS_PREFIX.ldap::quote($user).')';
}
$filter = count($filter) > 1 ? '(|'.explode('', $filter).')' : $filter[0];
// if an enable attribute is set, only return enabled accounts
if (static::MAIL_ENABLE_ATTR)
{
$filter = '(&('.static::MAIL_ENABLE_ATTR.'='.
(static::MAIL_ENABLED ? static::MAIL_ENABLED : '*').")$filter)";
}
}
}
$attributes = array_values(array_diff(array(
'mail', 'objectclass', static::USER_ATTR, static::MAIL_ENABLE_ATTR, static::ALIAS_ATTR,
static::MAILBOX_ATTR, static::FORWARD_ATTR, static::FORWARD_ONLY_ATTR, static::QUOTA_ATTR,
), array(false, '')));
$sri = ldap_search($ldap, $this->search_base, $filter, $attributes);
if ($sri)
{
$allValues = ldap_get_entries($ldap, $sri);
if ($this->debug) error_log(__METHOD__."('$user') --> ldap_search(, '$this->search_base', '$filter') --> ldap_get_entries=".array2string($allValues[0]));
foreach($allValues as $key => $values)
{
if ($key === 'count') continue;
// groups are always active (if they have an email) and allways forwardOnly
if (in_array(static::GROUP_SCHEMA, $values['objectclass']))
{
$accountStatus = emailadmin_smtp::MAIL_ENABLED;
$deliveryMode = emailadmin_smtp::FORWARD_ONLY;
}
else // for users we have to check the attributes
{
if (static::MAIL_ENABLE_ATTR)
{
$accountStatus = isset($values[static::MAIL_ENABLE_ATTR]) &&
(static::MAIL_ENABLED && !strcasecmp($values[static::MAIL_ENABLE_ATTR][0], static::MAIL_ENABLED) ||
!static::MAIL_ENABLED && $values[static::ALIAS_ATTR]['count'] > 0) ? emailadmin_smtp::MAIL_ENABLED : '';
}
else
{
$accountStatus = $values[static::ALIAS_ATTR]['count'] > 0 ? emailadmin_smtp::MAIL_ENABLED : '';
}
if (static::FORWARD_ONLY_ATTR)
{
if (static::FORWARD_ONLY) // check caseinsensitiv for existence of that value
{
$deliveryMode = self::getAttributePrefix($values[static::FORWARD_ONLY_ATTR], static::FORWARD_ONLY) ?
emailadmin_smtp::FORWARD_ONLY : '';
}
else // check for existence of any value
{
$deliveryMode = $values[static::FORWARD_ONLY_ATTR]['count'] > 0 ?
emailadmin_smtp::FORWARD_ONLY : '';
}
}
else
{
$deliveryMode = '';
}
}
// collect mail routing data (can be from multiple (active) accounts and groups!)
if ($accountStatus)
{
// groups never have a mailbox, accounts can have a deliveryMode of "forwardOnly"
if ($deliveryMode != emailadmin_smtp::FORWARD_ONLY)
{
$userData[static::USER_ATTR][] = $values[static::USER_ATTR][0];
if (static::MAILBOX_ATTR && isset($values[static::MAILBOX_ATTR]))
{
$userData['mailbox'][] = $values[static::MAILBOX_ATTR][0];
}
}
if (static::FORWARD_ATTR && $values[static::FORWARD_ATTR])
{
$userData['forward'] = array_merge($userData['forward'],
self::getAttributePrefix($values[static::FORWARD_ATTR], static::FORWARD_PREFIX, false));
}
}
// regular user-data can only be from users, NOT groups
if (in_array(static::GROUP_SCHEMA, $values['objectclass'])) continue;
$userData['mailLocalAddress'] = $values['mail'][0];
$userData['accountStatus'] = $accountStatus;
if (static::ALIAS_ATTR)
{
$userData['mailAlternateAddress'] = self::getAttributePrefix($values[static::ALIAS_ATTR], static::ALIAS_PREFIX);
}
else
{
$userData['mailAlternateAddress'] = (array)$values['mail'];
unset($userData['mailAlternateAddress']['count']);
unset($userData['mailAlternateAddress'][0]);
$userData['mailAlternateAddress'] = array_values($userData['mailAlternateAddress']);
}
if (static::FORWARD_ATTR)
{
$userData['mailForwardingAddress'] = self::getAttributePrefix($values[static::FORWARD_ATTR], static::FORWARD_PREFIX);
}
if (static::MAILBOX_ATTR) $userData['mailMessageStore'] = $values[static::MAILBOX_ATTR][0];
$userData['deliveryMode'] = $deliveryMode;
// eg. suse stores all email addresses as aliases
if (static::REQUIRE_MAIL_AS_ALIAS &&
($k = array_search($userData['mailLocalAddress'],$userData['mailAlternateAddress'])) !== false)
{
unset($userData['mailAlternateAddress'][$k]);
}
if (static::QUOTA_ATTR && isset($values[static::QUOTA_ATTR]))
{
$userData['quotaLimit'] = self::getAttributePrefix($values[static::QUOTA_ATTR], static::QUOTA_PREFIX);
$userData['quotaLimit'] = array_shift($userData['quotaLimit']);
$userData['quotaLimit'] = $userData['quotaLimit'] ? $userData['quotaLimit'] / static::QUOTA_FACTOR : null;
}
}
}
if ($this->debug) error_log(__METHOD__."('$user') returning ".array2string($userData));
return $userData;
}
/**
* Set the data of a given user
*
* @param int $_uidnumber numerical user-id
* @param array $_mailAlternateAddress
* @param array $_mailForwardingAddress
* @param string $_deliveryMode
* @param string $_accountStatus
* @param string $_mailLocalAddress
* @param int $_quota in MB
* @param boolean $_forwarding_only=false not used as we have our own addAccount method
* @param string $_setMailbox=null used only for account migration
* @return boolean true on success, false on error writing to ldap
*/
function setUserData($_uidnumber, array $_mailAlternateAddress, array $_mailForwardingAddress, $_deliveryMode,
$_accountStatus, $_mailLocalAddress, $_quota, $_forwarding_only=false, $_setMailbox=null)
{
if (static::USERID_ATTR)
{
$filter = static::USERID_ATTR.'='.(int)$_uidnumber;
}
else
{
$uid = $GLOBALS['egw']->accounts->id2name($_uidnumber);
$filter = static::USER_ATTR.'='.ldap::quote($uid);
}
$ldap = $this->getLdapConnection();
if (!($sri = @ldap_search($ldap, $this->search_base, $filter)))
{
return false;
}
$allValues = ldap_get_entries($ldap, $sri);
$accountDN = $allValues[0]['dn'];
$uid = $allValues[0][static::USER_ATTR][0];
$objectClasses = $allValues[0]['objectclass'];
unset($objectClasses['count']);
if(!in_array(static::SCHEMA,$objectClasses) && !in_array(strtolower(static::SCHEMA),$objectClasses))
{
$objectClasses[] = static::SCHEMA;
$newData['objectclass'] = $objectClasses;
}
sort($_mailAlternateAddress);
sort($_mailForwardingAddress);
$newData['mail'] = $_mailLocalAddress;
// does schema have explicit alias attribute
if (static::ALIAS_ATTR)
{
self::setAttributePrefix($newData[static::ALIAS_ATTR], $_mailAlternateAddress, static::ALIAS_PREFIX);
// all email must be stored as alias for suse
if (static::REQUIRE_MAIL_AS_ALIAS && !in_array($_mailLocalAddress,(array)$_mailAlternateAddress))
{
self::setAttributePrefix($newData[static::ALIAS_ATTR], $_mailLocalAddress, static::ALIAS_PREFIX);
}
}
// or de we add them - if existing - to mail attr
elseif ($_mailAlternateAddress)
{
self::setAttributePrefix($newData['mail'], $_mailAlternateAddress, static::ALIAS_PREFIX);
}
// does schema support to store forwards
if (static::FORWARD_ATTR)
{
self::setAttributePrefix($newData[static::FORWARD_ATTR], $_mailForwardingAddress, static::FORWARD_PREFIX);
}
// does schema support only forwarding incomming mail
if (static::FORWARD_ONLY_ATTR)
{
self::setAttributePrefix($newData[static::FORWARD_ONLY_ATTR],
$_deliveryMode ? (static::FORWARD_ONLY ? static::FORWARD_ONLY : 'forwardOnly') : array());
}
// does schema support an explicit mailbox name --> set it with $uid@$domain
if (static::MAILBOX_ATTR && empty($allValues[0][static::MAILBOX_ATTR][0]))
{
$newData[static::MAILBOX_ATTR] = $this->mailbox_addr(array(
'account_id' => $_uidnumber,
'account_lid' => $uid,
'account_email' => $_mailLocalAddress,
));
}
if (static::QUOTA_ATTR)
{
self::setAttributePrefix($newData[static::QUOTA_ATTR],
(int)$_quota > 0 ? (int)$_quota*static::QUOTA_FACTOR : array(), static::QUOTA_PREFIX);
}
// does schema support enabling/disabling mail via attribute
if (static::MAIL_ENABLE_ATTR)
{
$newData[static::MAIL_ENABLE_ATTR] = $_accountStatus ? static::MAIL_ENABLED : array();
}
// if we have no mail-enabled attribute, but require primary mail in aliases-attr
// we do NOT write aliases, if mail is not enabled
if (!$_accountStatus && !static::MAIL_ENABLE_ATTR && static::REQUIRE_MAIL_AS_ALIAS)
{
$newData[static::ALIAS_ATTR] = array();
}
// does schema support an explicit mailbox name --> set it, $_setMailbox is given
if (static::MAILBOX_ATTR && $_setMailbox)
{
$newData[static::MAILBOX_ATTR] = $_setMailbox;
}
if ($this->debug) error_log(__METHOD__.'('.array2string(func_get_args()).") --> ldap_mod_replace(,'$accountDN',".array2string($newData).')');
return ldap_mod_replace($ldap, $accountDN, $newData);
}
/**
* Saves the forwarding information
*
* @param int $_accountID
* @param string $_forwardingAddress
* @param string $_keepLocalCopy 'yes'
* @return boolean true on success, false on error writing to ldap
*/
function saveSMTPForwarding($_accountID, $_forwardingAddress, $_keepLocalCopy)
{
$ds = $this->getLdapConnection();
if (static::USERID_ATTR)
{
$filter = '(&'.static::USER_FILTER.'('.static::USERID_ATTR.'='.(int)$_accountID.'))';
}
else
{
$uid = $GLOBALS['egw']->accounts->id2name($_accountID);
$filter = '(&'.static::USER_FILTER.'('.static::USER_ATTR.'='.ldap::quote($uid).'))';
}
$attributes = array('dn', static::FORWARD_ATTR, 'objectclass');
if (static::FORWARD_ONLY_ATTR)
{
$attributes[] = static::FORWARD_ONLY_ATTR;
}
$sri = ldap_search($ds, $this->search_base, $filter, $attributes);
if ($sri)
{
$newData = array();
$allValues = ldap_get_entries($ds, $sri);
$objectClasses = $allValues[0]['objectclass'];
$newData['objectclass'] = $allValues[0]['objectclass'];
unset($newData['objectclass']['count']);
if(!in_array(static::SCHEMA,$objectClasses))
{
$newData['objectclass'][] = static::SCHEMA;
}
if (static::FORWARD_ATTR)
{
// copy all non-forward data (different prefix) to newData, all existing forwards to $forwards
$newData[static::FORWARD_ATTR] = $allValues[0][static::FORWARD_ATTR];
$forwards = self::getAttributePrefix($newData[static::FORWARD_ATTR], static::FORWARD_PREFIX);
if(!empty($_forwardingAddress))
{
if($forwards)
{
if (!is_array($_forwardingAddress))
{
// replace the first forwarding address (old behavior)
$forwards[0] = $_forwardingAddress;
}
else
{
// replace all forwarding Addresses
$forwards = $_forwardingAddress;
}
}
else
{
$forwards = (array)$_forwardingAddress;
}
if (static::FORWARD_ONLY_ATTR)
{
self::getAttributePrefix($newData[static::FORWARD_ONLY_ATTR], static::FORWARD_ONLY);
self::setAttributePrefix($newData[static::FORWARD_ONLY_ATTR],
$_keepLocalCopy == 'yes' ? array() : static::FORWARD_ONLY);
}
}
else
{
$forwards = array();
}
// merge in again all new set forwards incl. opt. prefix
self::getAttributePrefix($newData[static::FORWARD_ATTR], $forwards, static::FORWARD_PREFIX);
}
if ($this->debug) error_log(__METHOD__.'('.array2string(func_get_args()).") --> ldap_mod_replace(,'$accountDN',".array2string($newData).')');
return ldap_modify ($ds, $allValues[0]['dn'], $newData);
}
}
/**
* Get configured mailboxes of a domain
*
* @param boolean $return_inactive return mailboxes NOT marked as accountStatus=active too
* @return array uid => name-part of mailMessageStore
*/
function getMailboxes($return_inactive)
{
$ds = $this->getLdapConnection();
$filter = array("(mail=*)");
$attrs = array(static::USER_ATTR, 'mail');
if (static::MAILBOX_ATTR)
{
$filter[] = '('.static::MAILBOX_ATTR.'=*)';
$attrs[] = static::MAILBOX_ATTR;
}
if (!$return_inactive && static::MAIL_ENABLE_ATTR)
{
$filter[] = '('.static::MAIL_ENABLE_ATTR.'='.static::MAIL_ENABLED.')';
}
if (count($filter) > 1)
{
$filter = '(&'.implode('', $filter).')';
}
else
{
$filter = $filter[0];
}
if (!($sr = @ldap_search($ds, $this->search_base, $filter, $attrs)))
{
//error_log("Error ldap_search(\$ds, '$base', '$filter')!");
return array();
}
$entries = ldap_get_entries($ds, $sr);
unset($entries['count']);
$mailboxes = array();
foreach($entries as $entry)
{
if ($entry[static::USER_ATTR][0] == 'anonymous') continue; // anonymous is never a mail-user!
list($mailbox) = explode('@', $entry[static::MAILBOX_ATTR ? static::MAILBOX_ATTR : 'mail'][0]);
$mailboxes[$entry[static::USER_ATTR][0]] = $mailbox;
}
return $mailboxes;
}
/**
* Set values in a given LDAP attribute using an optional prefix
*
* @param array &$attribute on return array with values set and existing values preseved
* @param string|array $values value(s) to set
* @param string $prefix='' prefix to use or ''
*/
protected static function setAttributePrefix(&$attribute, $values, $prefix='')
{
$attribute_in = $attribute;
if (!isset($attribute)) $attribute = array();
if (!is_array($attribute)) $attribute = array($attribute);
foreach((array)$values as $value)
{
$attribute[] = $prefix.$value;
}
//error_log(__METHOD__."(".array2string($attribute_in).", ".array2string($values).", '$prefix') attribute=".array2string($attribute));
}
/**
* Get values having an optional prefix from a given LDAP attribute
*
* @param array &$attribute only "count" and prefixed values get removed, get's reindexed, if values have been removed
* @param string $prefix='' prefix to use or ''
* @param boolean $remove=true remove returned values from $attribute
* @return array with values (prefix removed) or array() if nothing found
*/
protected static function getAttributePrefix(&$attribute, $prefix='', $remove=true)
{
$attribute_in = $attribute;
$values = array();
if (isset($attribute))
{
unset($attribute['count']);
foreach($attribute as $key => $value)
{
if (!$prefix || stripos($value, $prefix) === 0)
{
if ($remove) unset($attribute[$key]);
$values[] = substr($value, strlen($prefix));
}
}
// reindex $attribute, if neccessary
if ($values && $attribute) $attribute = array_values($attribute);
}
//error_log(__METHOD__."(".array2string($attribute_in).", '$prefix', $remove) attribute=".array2string($attribute).' returning '.array2string($values));
return $values;
}
/**
* Return LDAP connection
*/
protected function getLdapConnection()
{
static $ldap;
if (is_null($ldap)) $ldap = $GLOBALS['egw']->ldap->ldapConnect();
return $ldap;
}
}
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