snipe-it/app/Models/LdapAdConfiguration.php

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<?php
declare(strict_types=1);
namespace App\Models;
use Exception;
use Illuminate\Support\Collection;
/**
* LDAP configuration merge for Adldap2.
*
* @see https://github.com/Adldap2/Adldap2
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*/
class LdapAdConfiguration
{
const LDAP_PORT = 389;
const CONNECTION_TIMEOUT = 5;
const DEFAULT_LDAP_VERSION = 3;
const LDAP_BOOLEAN_SETTINGS = ['ldap_enabled', 'ldap_server_cert_ignore', 'ldap_active_flag', 'ldap_tls', 'ldap_tls', 'ldap_pw_sync', 'is_ad'];
/**
* Ldap Settings.
*
* @var Collection
*/
public $ldapSettings;
/**
* LDAP Config.
*
* @var array
*/
public $ldapConfig;
/**
* __construct.
*/
public function __construct()
{
$this->ldapSettings = $this->getSnipeItLdapSettings();
$this->setSnipeItConfig();
}
/**
* Merge the default Adlap config with the SnipeIT config.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*/
private function setSnipeItConfig()
{
$this->ldapConfig = $this->setLdapConnectionConfiguration();
$this->certificateCheck();
}
/**
* Get the LDAP settings from the Settings model.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return \Illuminate\Support\Collection
*/
private function getSnipeItLdapSettings(): Collection
{
$ldapSettings = Setting::getLdapSettings()
->map(function ($item, $key) {
// Trim the items
if (is_string($item)) {
$item = trim($item);
}
// Get the boolean value of the LDAP setting, makes it easier to work with them
if (in_array($key, self::LDAP_BOOLEAN_SETTINGS)) {
return boolval($item);
}
// Decrypt the admin password
if (('ldap_pword' === $key) && ($item!='')) {
try {
return decrypt($item);
} catch (Exception $e) {
throw new Exception('Your app key has changed! Could not decrypt LDAP password using your current app key, so LDAP authentication has been disabled. Login with a local account, update the LDAP password and re-enable it in Admin > Settings.');
}
}
return $item;
});
return $ldapSettings;
}
/**
* Set the server certificate environment variable.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*/
private function certificateCheck(): void
{
// If we are ignoring the SSL cert we need to setup the environment variable
// before we create the connection
if ($this->ldapSettings['ldap_server_cert_ignore']) {
putenv('LDAPTLS_REQCERT=never');
}
// If the user specifies where CA Certs are, make sure to use them
if (env('LDAPTLS_CACERT')) {
putenv('LDAPTLS_CACERT='.env('LDAPTLS_CACERT'));
}
}
/**
* Set the Adlap2 connection configuration values based on SnipeIT settings.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return array
*/
private function setLdapConnectionConfiguration(): array
{
// Create the configuration array.
return [
// Mandatory Configuration Options
'hosts' => $this->getServerUrlBase(),
'base_dn' => $this->ldapSettings['ldap_basedn'],
'username' => $this->ldapSettings['ldap_uname'],
'password' => $this->ldapSettings['ldap_pword'],
// Optional Configuration Options
'schema' => $this->getSchema(),
'account_prefix' => '',
'account_suffix' => '',
'port' => $this->getPort(),
'follow_referrals' => false,
'use_ssl' => $this->isSsl(),
'use_tls' => $this->ldapSettings['ldap_tls'],
'version' => $this->ldapSettings['ldap_version'] ?? self::DEFAULT_LDAP_VERSION,
'timeout' => self::CONNECTION_TIMEOUT,
// Custom LDAP Options
'custom_options' => [
// See: http://php.net/ldap_set_option
// LDAP_OPT_X_TLS_REQUIRE_CERT => LDAP_OPT_X_TLS_HARD,
],
];
}
/**
* Get the schema to use for the connection.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return string
*/
private function getSchema(): string
{
$schema = \Adldap\Schemas\OpenLDAP::class;
if ($this->ldapSettings['is_ad']) {
$schema = \Adldap\Schemas\ActiveDirectory::class;
}
return $schema;
}
/**
* Get the port number from the connection url.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return int
*/
private function getPort(): int
{
$ldapUrl = $this->ldapSettings['ldap_server'];
if ($ldapUrl) {
$port = parse_url($ldapUrl, PHP_URL_PORT);
if (is_int($port)) {
return $port;
}
}
return self::LDAP_PORT;
}
/**
* Get ldap scheme from url to determin ssl use.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return bool
*/
private function isSsl(): bool
{
if ($this->ldapSettings['ldap_server']) {
$scheme = explode('://', $this->ldapSettings['ldap_server']);
if ('ldap' === strtolower($scheme[0])) {
return false;
}
return true;
}
return false;
}
/**
* Return the base url to the LDAP server.
*
* @author Wes Hulette <jwhulette@gmail.com>
*
* @since 5.0.0
*
* @return array
*/
private function getServerUrlBase(): array
{
if ($this->ldapSettings['is_ad']) {
return collect(explode(',', $this->ldapSettings['ad_domain']))->map(function ($item) {
return trim($item);
})->toArray();
}
if ($this->ldapSettings['ldap_server']) {
$parts = explode('//', $this->ldapSettings['ldap_server']);
return [
$parts[1],
];
}
return [];
}
}