ext_localconf.php

<?php
defined('TYPO3_MODE') || die();

// Configuration of authentication service.
$EXT_CONFIG = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf']['ig_ldap_sso_auth']);

// SSO configuration
if ((bool)$EXT_CONFIG['enableFESSO']) {
    $GLOBALS['TYPO3_CONF_VARS']['SVCONF']['auth']['setup']['FE_fetchUserIfNoSession'] = 1;
}
if ((bool)$EXT_CONFIG['enableBESSO']) {
    $GLOBALS['TYPO3_CONF_VARS']['SVCONF']['auth']['setup']['BE_fetchUserIfNoSession'] = 1;
}

// Visually change the record icon for FE/BE users and groups
if (version_compare(TYPO3_version, '7.6', '>=')) {
    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['TYPO3\\CMS\\Core\\Imaging\\IconFactory']['overrideIconOverlay'][] = 'Causal\\IgLdapSsoAuth\\Hooks\\IconFactory';
} else {
    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_iconworks.php']['overrideIconOverlay'][] = 'EXT:' . $_EXTKEY . '/Classes/Hooks/DatabaseRecordListIconUtility.php:Causal\\IgLdapSsoAuth\\Hooks\\DatabaseRecordListIconUtility';
}

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/class.db_list_extra.inc']['getTable'][] = 'EXT:' . $_EXTKEY . '/Classes/Hooks/DatabaseRecordListIconUtility.php:Causal\\IgLdapSsoAuth\\Hooks\\DatabaseRecordListIconUtility';

// Service configuration
$subTypesArr = [];
$subTypes = '';
if ($EXT_CONFIG['enableFELDAPAuthentication']) {
    $subTypesArr[] = 'getUserFE';
    $subTypesArr[] = 'authUserFE';
    $subTypesArr[] = 'getGroupsFE';
}
if ($EXT_CONFIG['enableBELDAPAuthentication']) {
    $subTypesArr[] = 'getUserBE';
    $subTypesArr[] = 'authUserBE';

    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/setup/mod/index.php']['modifyUserDataBeforeSave'][] = 'EXT:' . $_EXTKEY . '/Classes/Hooks/SetupModuleController.php:Causal\\IgLdapSsoAuth\\Hooks\\SetupModuleController->preprocessData';
}
if (is_array($subTypesArr)) {
    $subTypesArr = array_unique($subTypesArr);
    $subTypes = implode(',', $subTypesArr);
}

// Register hook for \TYPO3\CMS\Core\DataHandling\DataHandler
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'][] = 'EXT:' . $_EXTKEY . '/Classes/Hooks/DataHandler.php:Causal\\IgLdapSsoAuth\\Hooks\\DataHandler';

// Register the import users Scheduler task
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks']['Causal\\IgLdapSsoAuth\\Task\\ImportUsers'] = [
    'extension' => $_EXTKEY,
    'title' => 'LLL:EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf:task.import_users.title',
    'description' => 'LLL:EXT:' . $_EXTKEY . '/Resources/Private/Language/locallang.xlf:task.import_users.description',
    'additionalFields' => 'Causal\\IgLdapSsoAuth\\Task\\ImportUsersAdditionalFields'
];

\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addService(
    $_EXTKEY,
    'auth' /* sv type */,
    'Causal\\IgLdapSsoAuth\\Service\\AuthenticationService' /* sv key */,
    [
        'title' => 'Authentication service',
        'description' => 'Authentication service for LDAP and SSO environment.',

        'subtype' => $subTypes,

        'available' => true,
        'priority' => 80,
        'quality' => 80,

        'os' => '',
        'exec' => '',

        'className' => 'Causal\\IgLdapSsoAuth\\Service\\AuthenticationService',
    ]
);

// Register type converters
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerTypeConverter('Causal\\IgLdapSsoAuth\\Property\\TypeConverter\\ConfigurationConverter');

// User have save doc new button
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addUserTSConfig('options.saveDocNew.tx_igldapssoauth_config=1');