Initial commit of LDAP plugin

vendor/symfony/ldap/Adapter/ExtLdap/Connection.php

@@ -0,0 +1,154 @@
+<?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\ConnectionException;
+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
+{
+    /** @var bool */
+    private $bound = false;
+
+    /** @var resource */
+    private $connection;
+
+    public function __destruct()
+    {
+        $this->disconnect();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isBound()
+    {
+        return $this->bound;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function bind($dn = null, $password = null)
+    {
+        if (!$this->connection) {
+            $this->connect();
+        }
+
+        if (false === @ldap_bind($this->connection, $dn, $password)) {
+            throw new ConnectionException(ldap_error($this->connection));
+        }
+
+        $this->bound = true;
+    }
+
+    /**
+     * Returns a link resource.
+     *
+     * @return resource
+     *
+     * @internal
+     */
+    public function getResource()
+    {
+        return $this->connection;
+    }
+
+    public function setOption($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, $name));
+        }
+    }
+
+    public function getOption($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->setNormalizer('options', function (Options $options, $value) {
+            if (true === $options['debug']) {
+                $value['debug_level'] = 7;
+            }
+
+            if (!isset($value['protocol_version'])) {
+                $value['protocol_version'] = $options['version'];
+            }
+
+            if (!isset($value['referrals'])) {
+                $value['referrals'] = $options['referrals'];
+            }
+
+            return $value;
+        });
+
+        $resolver->setAllowedValues('options', function (array $values) {
+            foreach ($values as $name => $value) {
+                if (!ConnectionOptions::isOption($name)) {
+                    return false;
+                }
+            }
+
+            return true;
+        });
+    }
+
+    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 === $this->connection) {
+            throw new LdapException(sprintf('Could not connect to Ldap server: %s.', ldap_error($this->connection)));
+        }
+
+        if ('tls' === $this->config['encryption'] && false === ldap_start_tls($this->connection)) {
+            throw new LdapException(sprintf('Could not initiate TLS connection: %s.', ldap_error($this->connection)));
+        }
+    }
+
+    private function disconnect()
+    {
+        if ($this->connection && is_resource($this->connection)) {
+            ldap_close($this->connection);
+        }
+
+        $this->connection = null;
+        $this->bound = false;
+    }
+}