636 lines
No EOL
19 KiB
PHP
Executable file
636 lines
No EOL
19 KiB
PHP
Executable file
<?php
|
||
|
||
/**
|
||
* ownCloud – LDAP lib
|
||
*
|
||
* @author Arthur Schiwon
|
||
* @copyright 2012 Arthur Schiwon blizzz@owncloud.com
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
|
||
* License as published by the Free Software Foundation; either
|
||
* version 3 of the License, or any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
|
||
*
|
||
* You should have received a copy of the GNU Affero General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*
|
||
*/
|
||
|
||
define('LDAP_GROUP_MEMBER_ASSOC_ATTR','uniqueMember');
|
||
define('LDAP_GROUP_DISPLAY_NAME_ATTR','cn');
|
||
|
||
//needed to unbind, because we use OC_LDAP only statically
|
||
class OC_LDAP_DESTRUCTOR {
|
||
public function __destruct() {
|
||
OC_LDAP::destruct();
|
||
}
|
||
}
|
||
|
||
class OC_LDAP {
|
||
static protected $ldapConnectionRes = false;
|
||
static protected $configured = false;
|
||
|
||
//cached settings
|
||
static protected $ldapHost;
|
||
static protected $ldapPort;
|
||
static protected $ldapBase;
|
||
static protected $ldapBaseUsers;
|
||
static protected $ldapBaseGroups;
|
||
static protected $ldapAgentName;
|
||
static protected $ldapAgentPassword;
|
||
static protected $ldapTLS;
|
||
static protected $ldapNoCase;
|
||
// user and group settings, that are needed in both backends
|
||
static protected $ldapUserDisplayName;
|
||
static protected $ldapUserFilter;
|
||
static protected $ldapGroupDisplayName;
|
||
|
||
static public function init() {
|
||
self::readConfiguration();
|
||
self::establishConnection();
|
||
}
|
||
|
||
static public function destruct() {
|
||
@ldap_unbind(self::$ldapConnectionRes);
|
||
}
|
||
|
||
/**
|
||
* @brief returns a read-only configuration value
|
||
* @param $key the name of the configuration value
|
||
* @returns the value on success, otherwise null
|
||
*
|
||
* returns a read-only configuration values
|
||
*
|
||
* we cannot work with getters, because it is a static class
|
||
*/
|
||
static public function conf($key) {
|
||
if(!self::$configured) {
|
||
self::init();
|
||
}
|
||
|
||
$availableProperties = array(
|
||
'ldapUserDisplayName',
|
||
'ldapGroupDisplayName',
|
||
);
|
||
|
||
if(in_array($key, $availableProperties)) {
|
||
return self::$$key;
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
/**
|
||
* gives back the database table for the query
|
||
*/
|
||
static private function getMapTable($isUser) {
|
||
if($isUser) {
|
||
return '*PREFIX*ldap_user_mapping';
|
||
} else {
|
||
return '*PREFIX*ldap_group_mapping';
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @brief returns the LDAP DN for the given internal ownCloud name of the group
|
||
* @param $name the ownCloud name in question
|
||
* @returns string with the LDAP DN on success, otherwise false
|
||
*
|
||
* returns the LDAP DN for the given internal ownCloud name of the group
|
||
*/
|
||
static public function groupname2dn($name) {
|
||
return self::ocname2dn($name, false);
|
||
}
|
||
|
||
/**
|
||
* @brief returns the LDAP DN for the given internal ownCloud name of the user
|
||
* @param $name the ownCloud name in question
|
||
* @returns string with the LDAP DN on success, otherwise false
|
||
*
|
||
* returns the LDAP DN for the given internal ownCloud name of the user
|
||
*/
|
||
static public function username2dn($name) {
|
||
$dn = self::ocname2dn($name, true);
|
||
if($dn) {
|
||
return $dn;
|
||
} else {
|
||
//fallback: user is not mapped
|
||
$filter = self::combineFilterWithAnd(array(
|
||
self::$ldapUserFilter,
|
||
self::$ldapUserDisplayName . '=' . $name,
|
||
));
|
||
$result = self::searchUsers($filter, 'dn');
|
||
if(isset($result[0]['dn'])) {
|
||
self::mapUser($result[0], $name);
|
||
return $result[0];
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
static private function ocname2dn($name, $isUser) {
|
||
$table = self::getMapTable($isUser);
|
||
|
||
$query = OCP\DB::prepare('
|
||
SELECT ldap_dn
|
||
FROM '.$table.'
|
||
WHERE owncloud_name = ?
|
||
');
|
||
|
||
$record = $query->execute(array($name))->fetchOne();
|
||
return $record;
|
||
if($name=='Coyotes') {
|
||
echo("adsfasdf ");
|
||
var_dump($record);
|
||
die();
|
||
}
|
||
if(isset($record['ldap_dn'])) {
|
||
return $record['ldap_dn'];
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* @brief returns the internal ownCloud name for the given LDAP DN of the group
|
||
* @param $dn the dn of the group object
|
||
* @param $ldapname optional, the display name of the object
|
||
* @returns string with with the name to use in ownCloud
|
||
*
|
||
* returns the internal ownCloud name for the given LDAP DN of the group
|
||
*/
|
||
static public function dn2groupname($dn, $ldapname = null) {
|
||
return self::dn2ocname($dn, $ldapname, false);
|
||
}
|
||
|
||
/**
|
||
* @brief returns the internal ownCloud name for the given LDAP DN of the user
|
||
* @param $dn the dn of the user object
|
||
* @param $ldapname optional, the display name of the object
|
||
* @returns string with with the name to use in ownCloud
|
||
*
|
||
* returns the internal ownCloud name for the given LDAP DN of the user
|
||
*/
|
||
static public function dn2username($dn, $ldapname = null) {
|
||
return self::dn2ocname($dn, $ldapname, true);
|
||
}
|
||
|
||
static public function dn2ocname($dn, $ldapname = null, $isUser = true) {
|
||
$table = self::getMapTable($isUser);
|
||
if($isUser) {
|
||
$nameAttribute = self::conf('ldapUserDisplayName');
|
||
} else {
|
||
$nameAttribute = self::conf('ldapGroupDisplayName');
|
||
}
|
||
|
||
$query = OCP\DB::prepare('
|
||
SELECT owncloud_name
|
||
FROM '.$table.'
|
||
WHERE ldap_dn = ?
|
||
');
|
||
|
||
$component = $query->execute(array($dn))->fetchOne();
|
||
if($component) {
|
||
return $component;
|
||
}
|
||
|
||
if(is_null($ldapname)) {
|
||
$ldapname = self::readAttribute($dn, $nameAttribute);
|
||
$ldapname = $ldapname[0];
|
||
}
|
||
|
||
//a new user/group! Then let's try to add it. We're shooting into the blue with the user/group name, assuming that in most cases there will not be a conflict. Otherwise an error will occur and we will continue with our second shot.
|
||
if(self::mapComponent($dn, $ldapname, $isUser)) {
|
||
return $ldapname;
|
||
}
|
||
|
||
//doh! There is a conflict. We need to distinguish between users/groups. Adding indexes is an idea, but not much of a help for the user. The DN is ugly, but for now the only reasonable way. But we transform it to a readable format and remove the first part to only give the path where this object is located.
|
||
$oc_name = self::alternateOwnCloudName($ldapname, $dn);
|
||
if(self::mapComponent($dn, $oc_name, $isUser)) {
|
||
return $oc_name;
|
||
}
|
||
|
||
//and this of course should never been thrown :)
|
||
throw new Exception('LDAP backend: unexpected collision of DN and ownCloud Name.');
|
||
}
|
||
|
||
/**
|
||
* @brief gives back the user names as they are used ownClod internally
|
||
* @param $ldapGroups an array with the ldap Users result in style of array ( array ('dn' => foo, 'uid' => bar), ... )
|
||
* @returns an array with the user names to use in ownCloud
|
||
*
|
||
* gives back the user names as they are used ownClod internally
|
||
*/
|
||
static public function ownCloudUserNames($ldapUsers) {
|
||
return self::ldap2ownCloudNames($ldapUsers, true);
|
||
}
|
||
|
||
/**
|
||
* @brief gives back the group names as they are used ownClod internally
|
||
* @param $ldapGroups an array with the ldap Groups result in style of array ( array ('dn' => foo, 'cn' => bar), ... )
|
||
* @returns an array with the group names to use in ownCloud
|
||
*
|
||
* gives back the group names as they are used ownClod internally
|
||
*/
|
||
static public function ownCloudGroupNames($ldapGroups) {
|
||
return self::ldap2ownCloudNames($ldapGroups, false);
|
||
}
|
||
|
||
static private function ldap2ownCloudNames($ldapObjects, $isUsers) {
|
||
if($isUsers) {
|
||
$knownObjects = self::mappedUsers();
|
||
$nameAttribute = self::conf('ldapUserDisplayName');
|
||
} else {
|
||
$knownObjects = self::mappedGroups();
|
||
$nameAttribute = self::conf('ldapGroupDisplayName');
|
||
}
|
||
$ownCloudNames = array();
|
||
|
||
foreach($ldapObjects as $ldapObject) {
|
||
$key = self::recursiveArraySearch($knownObjects, $ldapObject['dn']);
|
||
|
||
//everything is fine when we know the group
|
||
if($key) {
|
||
$ownCloudNames[] = $knownObjects[$key]['owncloud_name'];
|
||
continue;
|
||
}
|
||
|
||
//a new group! Then let's try to add it. We're shooting into the blue with the group name, assuming that in most cases there will not be a conflict
|
||
if(self::mapComponent($ldapObject['dn'], $ldapObject[$nameAttribute], $isUsers)) {
|
||
$ownCloudNames[] = $ldapObject[$nameAttribute];
|
||
continue;
|
||
}
|
||
|
||
//doh! There is a conflict. We need to distinguish between groups. Adding indexes is an idea, but not much of a help for the user. The DN is ugly, but for now the only reasonable way. But we transform it to a readable format and remove the first part to only give the path where this entry is located.
|
||
$oc_name = self::alternateOwnCloudName($ldapObject[$nameAttribute], $ldapObject['dn']);
|
||
if(self::mapComponent($ldapObject['dn'], $oc_name, $isUsers)) {
|
||
$ownCloudNames[] = $oc_name;
|
||
continue;
|
||
}
|
||
|
||
//and this of course should never been thrown :)
|
||
throw new Exception('LDAP backend: unexpected collision of DN and ownCloud Name.');
|
||
}
|
||
return $ownCloudNames;
|
||
}
|
||
|
||
/**
|
||
* @brief creates a hopefully unique name for owncloud based on the display name and the dn of the LDAP object
|
||
* @param $name the display name of the object
|
||
* @param $dn the dn of the object
|
||
* @returns string with with the name to use in ownCloud
|
||
*
|
||
* creates a hopefully unique name for owncloud based on the display name and the dn of the LDAP object
|
||
*/
|
||
static private function alternateOwnCloudName($name, $dn) {
|
||
$ufn = ldap_dn2ufn($dn);
|
||
return $name . ' (' . trim(substr_replace($ufn, '', 0, strpos($ufn, ','))) . ')';
|
||
}
|
||
|
||
/**
|
||
* @brief retrieves all known groups from the mappings table
|
||
* @returns array with the results
|
||
*
|
||
* retrieves all known groups from the mappings table
|
||
*/
|
||
static private function mappedGroups() {
|
||
return self::mappedComponents(false);
|
||
}
|
||
|
||
/**
|
||
* @brief retrieves all known users from the mappings table
|
||
* @returns array with the results
|
||
*
|
||
* retrieves all known users from the mappings table
|
||
*/
|
||
static private function mappedUsers() {
|
||
return self::mappedComponents(true);
|
||
}
|
||
|
||
static private function mappedComponents($isUsers) {
|
||
$table = self::getMapTable($isUsers);
|
||
|
||
$query = OCP\DB::prepare('
|
||
SELECT ldap_dn, owncloud_name
|
||
FROM '. $table
|
||
);
|
||
|
||
return $query->execute()->fetchAll();
|
||
}
|
||
|
||
/**
|
||
* @brief inserts a new group into the mappings table
|
||
* @param $dn the record in question
|
||
* @param $ocname the name to use in ownCloud
|
||
* @returns true on success, false otherwise
|
||
*
|
||
* inserts a new group into the mappings table
|
||
*/
|
||
static private function mapGroup($dn, $ocname) {
|
||
return self::mapComponent($dn, $ocname, false);
|
||
}
|
||
|
||
/**
|
||
* @brief inserts a new user into the mappings table
|
||
* @param $dn the record in question
|
||
* @param $ocname the name to use in ownCloud
|
||
* @returns true on success, false otherwise
|
||
*
|
||
* inserts a new user into the mappings table
|
||
*/
|
||
static private function mapUser($dn, $ocname) {
|
||
return self::mapComponent($dn, $ocname, true);
|
||
}
|
||
|
||
/**
|
||
* @brief inserts a new user or group into the mappings table
|
||
* @param $dn the record in question
|
||
* @param $ocname the name to use in ownCloud
|
||
* @param $isUser is it a user or a group?
|
||
* @returns true on success, false otherwise
|
||
*
|
||
* inserts a new user or group into the mappings table
|
||
*/
|
||
static private function mapComponent($dn, $ocname, $isUser = true) {
|
||
$table = self::getMapTable($isUser);
|
||
|
||
$insert = OCP\DB::prepare('
|
||
INSERT IGNORE INTO '.$table.'
|
||
(ldap_dn, owncloud_name)
|
||
VALUES (?,?)
|
||
');
|
||
|
||
$res = $insert->execute(array($dn, $ocname));
|
||
|
||
return !OCP\DB::isError($res);
|
||
}
|
||
|
||
static public function fetchListOfUsers($filter, $attr) {
|
||
return self::fetchList(OC_LDAP::searchUsers($filter, $attr), (count($attr) > 1));
|
||
}
|
||
|
||
static public function fetchListOfGroups($filter, $attr) {
|
||
return self::fetchList(OC_LDAP::searchGroups($filter, $attr), (count($attr) > 1));
|
||
}
|
||
|
||
static private function fetchList($list, $manyAttributes) {
|
||
if(is_array($list)) {
|
||
if($manyAttributes) {
|
||
return $list;
|
||
} else {
|
||
return array_unique($list, SORT_LOCALE_STRING);
|
||
}
|
||
}
|
||
|
||
//error cause actually, maybe throw an exception in future.
|
||
return array();
|
||
}
|
||
|
||
/**
|
||
* @brief reads a given attribute for an LDAP record identified by a DN
|
||
* @param $dn the record in question
|
||
* @param $attr the attribute that shall be retrieved
|
||
* @returns the values in an array on success, false otherwise
|
||
*
|
||
* Reads an attribute from an LDAP entry
|
||
*/
|
||
static public function readAttribute($dn, $attr) {
|
||
$cr = self::getConnectionResource();
|
||
$rr = ldap_read($cr, $dn, 'objectClass=*', array($attr));
|
||
$er = ldap_first_entry($cr, $rr);
|
||
$result = ldap_get_attributes($cr, $er);
|
||
|
||
if($result[$attr]['count'] > 0){
|
||
$values = array();
|
||
for($i=0;$i<$result[$attr]['count'];$i++) {
|
||
$values[] = $result[$attr][$i];
|
||
}
|
||
return $values;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* @brief executes an LDAP search, optimized for Users
|
||
* @param $filter the LDAP filter for the search
|
||
* @param $attr optional, when a certain attribute shall be filtered out
|
||
* @returns array with the search result
|
||
*
|
||
* Executes an LDAP search
|
||
*/
|
||
static public function searchUsers($filter, $attr = null) {
|
||
return self::search($filter, self::$ldapBaseUsers, $attr);
|
||
}
|
||
|
||
/**
|
||
* @brief executes an LDAP search, optimized for Groups
|
||
* @param $filter the LDAP filter for the search
|
||
* @param $attr optional, when a certain attribute shall be filtered out
|
||
* @returns array with the search result
|
||
*
|
||
* Executes an LDAP search
|
||
*/
|
||
static public function searchGroups($filter, $attr = null) {
|
||
return self::search($filter, self::$ldapBaseGroups, $attr);
|
||
}
|
||
|
||
/**
|
||
* @brief executes an LDAP search
|
||
* @param $filter the LDAP filter for the search
|
||
* @param $base the LDAP subtree that shall be searched
|
||
* @param $attr optional, when a certain attribute shall be filtered out
|
||
* @returns array with the search result
|
||
*
|
||
* Executes an LDAP search
|
||
*/
|
||
static private function search($filter, $base, $attr = null) {
|
||
if(!is_null($attr) && !is_array($attr)) {
|
||
$attr = array(strtolower($attr));
|
||
}
|
||
|
||
$sr = @ldap_search(self::getConnectionResource(), $base, $filter, $attr);
|
||
$findings = @ldap_get_entries(self::getConnectionResource(), $sr );
|
||
// if we're here, probably no connection ressource is returned.
|
||
// to make ownCloud behave nicely, we simply give back an empty array.
|
||
if(is_null($findings)) {
|
||
return array();
|
||
}
|
||
|
||
if(!is_null($attr)) {
|
||
$selection = array();
|
||
$multiarray = false;
|
||
if(count($attr) > 1) {
|
||
$multiarray = true;
|
||
$i = 0;
|
||
}
|
||
foreach($findings as $item) {
|
||
if($multiarray) {
|
||
foreach($attr as $key) {
|
||
if(isset($item[$key])) {
|
||
if($key != 'dn'){
|
||
$selection[$i][$key] = $item[$key][0];
|
||
} else {
|
||
$selection[$i][$key] = $item[$key];
|
||
}
|
||
}
|
||
|
||
}
|
||
$i++;
|
||
} else {
|
||
if(isset($item[$attr[0]])) {
|
||
$selection[] = $item[$attr[0]];
|
||
}
|
||
}
|
||
|
||
}
|
||
return $selection;
|
||
}
|
||
|
||
return $findings;
|
||
}
|
||
|
||
/**
|
||
* @brief combines the input filters with AND
|
||
* @param $filters array, the filters to connect
|
||
* @returns the combined filter
|
||
*
|
||
* Combines Filter arguments with AND
|
||
*/
|
||
static public function combineFilterWithAnd($filters) {
|
||
return self::combineFilter($filters,'&');
|
||
}
|
||
|
||
/**
|
||
* @brief combines the input filters with AND
|
||
* @param $filters array, the filters to connect
|
||
* @returns the combined filter
|
||
*
|
||
* Combines Filter arguments with AND
|
||
*/
|
||
static public function combineFilterWithOr($filters) {
|
||
return self::combineFilter($filters,'|');
|
||
}
|
||
|
||
/**
|
||
* @brief combines the input filters with given operator
|
||
* @param $filters array, the filters to connect
|
||
* @param $operator either & or |
|
||
* @returns the combined filter
|
||
*
|
||
* Combines Filter arguments with AND
|
||
*/
|
||
static private function combineFilter($filters, $operator) {
|
||
$combinedFilter = '('.$operator;
|
||
foreach($filters as $filter) {
|
||
if(substr($filter,0,1) != '(') {
|
||
$filter = '('.$filter.')';
|
||
}
|
||
$combinedFilter.=$filter;
|
||
}
|
||
$combinedFilter.=')';
|
||
return $combinedFilter;
|
||
}
|
||
|
||
/**
|
||
* Returns the LDAP handler
|
||
*/
|
||
static private function getConnectionResource() {
|
||
if(!self::$ldapConnectionRes) {
|
||
self::init();
|
||
}
|
||
if(is_null(self::$ldapConnectionRes)) {
|
||
OCP\Util::writeLog('ldap', 'Connection could not be established', OCP\Util::INFO);
|
||
}
|
||
return self::$ldapConnectionRes;
|
||
}
|
||
|
||
/**
|
||
* Caches the general LDAP configuration.
|
||
*/
|
||
static private function readConfiguration() {
|
||
if(!self::$configured) {
|
||
self::$ldapHost = OCP\Config::getAppValue('user_ldap', 'ldap_host', '');
|
||
self::$ldapPort = OCP\Config::getAppValue('user_ldap', 'ldap_port', OC_USER_BACKEND_LDAP_DEFAULT_PORT);
|
||
self::$ldapAgentName = OCP\Config::getAppValue('user_ldap', 'ldap_dn','');
|
||
self::$ldapAgentPassword = OCP\Config::getAppValue('user_ldap', 'ldap_password','');
|
||
self::$ldapBase = OCP\Config::getAppValue('user_ldap', 'ldap_base', '');
|
||
self::$ldapBaseUsers = OCP\Config::getAppValue('user_ldap', 'ldap_base_users',self::$ldapBase);
|
||
self::$ldapBaseGroups = OCP\Config::getAppValue('user_ldap', 'ldap_base_groups', self::$ldapBase);
|
||
self::$ldapTLS = OCP\Config::getAppValue('user_ldap', 'ldap_tls',0);
|
||
self::$ldapNoCase = OCP\Config::getAppValue('user_ldap', 'ldap_nocase', 0);
|
||
self::$ldapUserDisplayName = OCP\Config::getAppValue('user_ldap', 'ldap_display_name', OC_USER_BACKEND_LDAP_DEFAULT_DISPLAY_NAME);
|
||
self::$ldapUserFilter = OCP\Config::getAppValue('user_ldap', 'ldap_userlist_filter','objectClass=person');
|
||
self::$ldapGroupDisplayName = OCP\Config::getAppValue('user_ldap', 'ldap_group_display_name', LDAP_GROUP_DISPLAY_NAME_ATTR);
|
||
|
||
if(
|
||
!empty(self::$ldapHost)
|
||
&& !empty(self::$ldapPort)
|
||
&& (
|
||
(!empty(self::$ldapAgentName) && !empty(self::$ldapAgentPassword))
|
||
|| ( empty(self::$ldapAgentName) && empty(self::$ldapAgentPassword))
|
||
)
|
||
&& !empty(self::$ldapBase)
|
||
&& !empty(self::$ldapBaseUsers)
|
||
&& !empty(self::$ldapBaseGroups)
|
||
&& !empty(self::$ldapUserDisplayName)
|
||
)
|
||
{
|
||
self::$configured = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Connects and Binds to LDAP
|
||
*/
|
||
static private function establishConnection() {
|
||
if(!self::$configured) {
|
||
return false;
|
||
}
|
||
if(!self::$ldapConnectionRes) {
|
||
self::$ldapConnectionRes = ldap_connect(self::$ldapHost, self::$ldapPort);
|
||
if(ldap_set_option(self::$ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
|
||
if(ldap_set_option(self::$ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) {
|
||
if(self::$ldapTLS) {
|
||
ldap_start_tls(self::$ldapConnectionRes);
|
||
}
|
||
}
|
||
}
|
||
|
||
$ldapLogin = @ldap_bind(self::$ldapConnectionRes, self::$ldapAgentName, self::$ldapAgentPassword );
|
||
if(!$ldapLogin) {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
static public function areCredentialsValid($name, $password) {
|
||
return @ldap_bind(self::getConnectionResource(), $name, $password);
|
||
}
|
||
|
||
/**
|
||
* taken from http://www.php.net/manual/en/function.array-search.php#97645
|
||
* TODO: move somewhere, where its better placed since it is not LDAP specific. OC_Helper maybe?
|
||
*/
|
||
static public function recursiveArraySearch($haystack, $needle, $index = null) {
|
||
$aIt = new RecursiveArrayIterator($haystack);
|
||
$it = new RecursiveIteratorIterator($aIt);
|
||
|
||
while($it->valid()) {
|
||
if (((isset($index) AND ($it->key() == $index)) OR (!isset($index))) AND ($it->current() == $needle)) {
|
||
return $aIt->key();
|
||
}
|
||
|
||
$it->next();
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
} |