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Connection.php
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Connection.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Ldap\Adapter\ExtLdap;
use Symfony\Component\Ldap\Adapter\AbstractConnection;
use Symfony\Component\Ldap\Exception\AlreadyExistsException;
use Symfony\Component\Ldap\Exception\ConnectionException;
use Symfony\Component\Ldap\Exception\ConnectionTimeoutException;
use Symfony\Component\Ldap\Exception\InvalidCredentialsException;
use Symfony\Component\Ldap\Exception\LdapException;
use Symfony\Component\OptionsResolver\Options;
use Symfony\Component\OptionsResolver\OptionsResolver;
/**
* @author Charles Sarrazin <charles@sarraz.in>
*/
class Connection extends AbstractConnection
{
private const LDAP_INVALID_CREDENTIALS = 0x31;
private const LDAP_TIMEOUT = 0x55;
private const LDAP_ALREADY_EXISTS = 0x44;
/** @var bool */
private $bound = false;
/** @var resource */
private $connection;
public function __destruct()
{
$this->disconnect();
}
/**
* {@inheritdoc}
*/
public function isBound()
{
return $this->bound;
}
/**
* {@inheritdoc}
*/
public function bind(string $dn = null, string $password = null)
{
if (!$this->connection) {
$this->connect();
}
if (false === @ldap_bind($this->connection, $dn, $password)) {
$error = ldap_error($this->connection);
switch (ldap_errno($this->connection)) {
case self::LDAP_INVALID_CREDENTIALS:
throw new InvalidCredentialsException($error);
case self::LDAP_TIMEOUT:
throw new ConnectionTimeoutException($error);
case self::LDAP_ALREADY_EXISTS:
throw new AlreadyExistsException($error);
}
throw new ConnectionException($error);
}
$this->bound = true;
}
/**
* Returns a link resource.
*
* @return resource
*
* @internal
*/
public function getResource()
{
return $this->connection;
}
public function setOption(string $name, $value)
{
if (!@ldap_set_option($this->connection, ConnectionOptions::getOption($name), $value)) {
throw new LdapException(sprintf('Could not set value "%s" for option "%s".', $value, $name));
}
}
public function getOption(string $name)
{
if (!@ldap_get_option($this->connection, ConnectionOptions::getOption($name), $ret)) {
throw new LdapException(sprintf('Could not retrieve value for option "%s".', $name));
}
return $ret;
}
protected function configureOptions(OptionsResolver $resolver)
{
parent::configureOptions($resolver);
$resolver->setDefault('debug', false);
$resolver->setAllowedTypes('debug', 'bool');
$resolver->setDefault('referrals', false);
$resolver->setAllowedTypes('referrals', 'bool');
$resolver->setDefault('options', function (OptionsResolver $options, Options $parent) {
$options->setDefined(array_map('strtolower', array_keys((new \ReflectionClass(ConnectionOptions::class))->getConstants())));
if (true === $parent['debug']) {
$options->setDefault('debug_level', 7);
}
if (!isset($parent['network_timeout'])) {
$options->setDefault('network_timeout', ini_get('default_socket_timeout'));
}
$options->setDefaults([
'protocol_version' => $parent['version'],
'referrals' => $parent['referrals'],
]);
});
}
private function connect()
{
if ($this->connection) {
return;
}
$this->connection = ldap_connect($this->config['connection_string']);
foreach ($this->config['options'] as $name => $value) {
$this->setOption($name, $value);
}
if (false === $this->connection) {
throw new LdapException('Could not connect to Ldap server: '.ldap_error($this->connection));
}
if ('tls' === $this->config['encryption'] && false === @ldap_start_tls($this->connection)) {
throw new LdapException('Could not initiate TLS connection: '.ldap_error($this->connection));
}
}
private function disconnect()
{
if ($this->connection && \is_resource($this->connection)) {
ldap_unbind($this->connection);
}
$this->connection = null;
$this->bound = false;
}
}