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

@@ -0,0 +1,189 @@
+<?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 LDAP\Connection as LDAPConnection;
+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;
+    private const PRECONNECT_OPTIONS = [
+        ConnectionOptions::DEBUG_LEVEL,
+        ConnectionOptions::X_TLS_CACERTDIR,
+        ConnectionOptions::X_TLS_CACERTFILE,
+        ConnectionOptions::X_TLS_REQUIRE_CERT,
+    ];
+
+    private bool $bound = false;
+    private ?LDAPConnection $connection = null;
+
+    public function __sleep(): array
+    {
+        throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
+    }
+
+    /**
+     * @return void
+     */
+    public function __wakeup()
+    {
+        throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
+    }
+
+    public function __destruct()
+    {
+        $this->disconnect();
+    }
+
+    public function isBound(): bool
+    {
+        return $this->bound;
+    }
+
+    /**
+     * @param string $password WARNING: When the LDAP server allows unauthenticated binds, a blank $password will always be valid
+     *
+     * @return void
+     */
+    public function bind(?string $dn = null, #[\SensitiveParameter] ?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;
+    }
+
+    /**
+     * @internal
+     */
+    public function getResource(): ?LDAPConnection
+    {
+        return $this->connection;
+    }
+
+    /**
+     * @return void
+     */
+    public function setOption(string $name, array|string|int|bool $value)
+    {
+        if (!@ldap_set_option($this->connection, ConnectionOptions::getOption($name), $value)) {
+            throw new LdapException(sprintf('Could not set value "%s" for option "%s".', $value, $name));
+        }
+    }
+
+    /**
+     * @return array|string|int|null
+     */
+    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;
+    }
+
+    /**
+     * @return void
+     */
+    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' => $parent['referrals'],
+            ]);
+        });
+    }
+
+    private function connect(): void
+    {
+        if ($this->connection) {
+            return;
+        }
+
+        foreach ($this->config['options'] as $name => $value) {
+            if (\in_array(ConnectionOptions::getOption($name), self::PRECONNECT_OPTIONS, true)) {
+                $this->setOption($name, $value);
+            }
+        }
+
+        if (false === $connection = ldap_connect($this->config['connection_string'])) {
+            throw new LdapException('Invalid connection string: '.$this->config['connection_string']);
+        } else {
+            $this->connection = $connection;
+        }
+
+        foreach ($this->config['options'] as $name => $value) {
+            if (!\in_array(ConnectionOptions::getOption($name), self::PRECONNECT_OPTIONS, true)) {
+                $this->setOption($name, $value);
+            }
+        }
+
+        if ('tls' === $this->config['encryption'] && false === @ldap_start_tls($this->connection)) {
+            throw new LdapException('Could not initiate TLS connection: '.ldap_error($this->connection));
+        }
+    }
+
+    private function disconnect(): void
+    {
+        if ($this->connection) {
+            ldap_unbind($this->connection);
+        }
+
+        $this->connection = null;
+        $this->bound = false;
+    }
+}