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<?php
defined('ABSPATH') or die();

/**
 * Enqueue Gutenberg block assets for backend editor.
 *
 * @since 1.0.0
 */

require_once(rsssl_path.'settings/config/config.php');
require_once(rsssl_path.'settings/config/menu.php');
require_once(rsssl_path.'settings/config/disable-fields-filter.php');

/**
 * Fix for WPML issue where WPML breaks the rest api by adding a language locale in the url
 *
 * @param $url
 * @param $path
 * @param $blog_id
 * @param $scheme
 *
 * @return string
 */
function rsssl_fix_rest_url_for_wpml($url, $path, $blog_id, $scheme)
{
    if (strpos($url, 'reallysimplessl/v') === false) {
        return $url;
    }

$current_language = false;
    if (function_exists('icl_register_string')) {
        $current_language = apply_filters('wpml_current_language', null);
    }

if (function_exists('qtranxf_getLanguage')) {
        $current_language = qtranxf_getLanguage();
    }

if ($current_language) {
        if (strpos($url, '/'.$current_language.'/wp-json/')) {
            $url = str_replace('/'.$current_language.'/wp-json/', '/wp-json/', $url);
        }
    }

return $url;
}

add_filter('rest_url', 'rsssl_fix_rest_url_for_wpml', 10, 4);

/**
 * WordPress doesn't allow for translation of chunks resulting of code splitting.
 * Several workarounds have popped up in JetPack and Woocommerce: https://developer.wordpress.com/2022/01/06/wordpress-plugin-i18n-webpack-and-composer/
 * Below is mainly based on the Woocommerce solution, which seems to be the most simple approach. Simplicity is king here.
 *
 * @return array
 */
function rsssl_get_chunk_translations($path = 'settings/build'  ) {
	//get all files from the settings/build folder
	$files = scandir(rsssl_path . $path );
	$json_translations = [];

// filter the filenames to get the JavaScript and asset filenames
	$jsFilename = '';
	$assetFilename = '';

foreach ($files as $file) {
		if (strpos($file, 'index.') === 0) {
			if (substr($file, -3) === '.js') {
				$jsFilename = $file;
			} elseif (substr($file, -10) === '.asset.php') {
				$assetFilename = $file;
			}
		}

if (strpos($file, '.js') === false) {
            continue;
        }
		$chunk_handle = 'rsssl-chunk-'.$file;
        //temporarily register the script, so we can get a translations object.
		wp_register_script( $chunk_handle, plugins_url('build/'.$file, __FILE__), [], true );
        $localeData = load_script_textdomain( $chunk_handle, 'really-simple-ssl' );
        if (!empty($localeData)){
	        $json_translations[] = $localeData;
        }
		wp_deregister_script( $chunk_handle );
	}
    if (empty($jsFilename) || empty($assetFilename) ) {
        return [];
    }
	$assetFile     = require( rsssl_path . trailingslashit( $path ) . $assetFilename );
    return [
            'json_translations' => $json_translations,
            'dependencies'  => $assetFile['dependencies'],
            'version'  => $assetFile['version'],
            'js_file'  => $jsFilename,
        ];
}

function rsssl_plugin_admin_scripts()
{

$js_data = rsssl_get_chunk_translations();
	// check if the necessary files are found
	if ( !empty($js_data) ) {
		$handle = 'rsssl-settings';
		wp_enqueue_script( $handle);
		wp_enqueue_script(
			'rsssl-settings',
			plugins_url( 'build/' . $js_data['js_file'], __FILE__ ),
			$js_data['dependencies'],
			$js_data['version'],
			true
		);
		wp_set_script_translations($handle, 'really-simple-ssl');
		wp_localize_script(
			'rsssl-settings',
			'rsssl_settings',
			apply_filters('rsssl_localize_script', [
				'json_translations' => $js_data['json_translations'],
				'menu' => rsssl_menu(),
				'site_url' => get_rest_url(),
				'plugins_url' => admin_url('update-core.php'),
				'admin_ajax_url' => add_query_arg(
					array(
						'type' => 'errors',
						'action' => 'rsssl_rest_api_fallback'
					),
					admin_url('admin-ajax.php')),
				'dashboard_url' => add_query_arg(['page' => 'really-simple-security'], rsssl_admin_url()),
				'letsencrypt_url' => rsssl_letsencrypt_wizard_url(),
				'le_generated_by_rsssl' => rsssl_generated_by_rsssl(),
				'upgrade_link' => is_multisite() ? 'https://really-simple-ssl.com/pro/?mtm_campaign=fallback&mtm_source=free&mtm_content=upgrade' : 'https://really-simple-ssl.com/pro/?mtm_campaign=fallback&mtm_source=free&mtm_content=upgrade',
				'plugin_url' => rsssl_url,
				'network_link' => network_site_url('plugins.php'),
				'pro_plugin_active' => defined('rsssl_pro_version'),
				'pro_incompatible' => defined('rsssl_pro_version') && rsssl_incompatible_premium_version(),
				'networkwide_active' => !is_multisite() || rsssl_is_networkwide_active(),//true for single sites and network wide activated
				'nonce' => wp_create_nonce('wp_rest'),//to authenticate the logged in user
				'rsssl_nonce' => wp_create_nonce('rsssl_nonce'),
				'wpconfig_fix_required' => RSSSL()->admin->do_wpconfig_loadbalancer_fix() && !RSSSL()->admin->wpconfig_has_fixes(),
			])
		);
	}
}

/**
 * Add SSL menu
 *
 * @return void
 */
function rsssl_add_option_menu()
{
    if ( ! rsssl_user_can_manage()) {
        return;
    }

//hides the settings page the plugin is network activated. The settings can be found on the network settings menu.
    if (is_multisite() && rsssl_is_networkwide_active()) {
        return;
    }

$count            = RSSSL()->admin->count_plusones();
    $update_count     = $count > 0 ? "<span class='update-plugins rsssl-update-count'><span class='update-count'>$count</span></span>" : "";
    $page_hook_suffix = add_options_page(
        __("SSL & Security", "really-simple-ssl"),
        __("SSL & Security", "really-simple-ssl").$update_count,
        'manage_security',
        'really-simple-security',
        'rsssl_settings_page'
    );

add_action("admin_print_scripts-{$page_hook_suffix}", 'rsssl_plugin_admin_scripts');
}

add_action('admin_menu', 'rsssl_add_option_menu');

/**
 * Render the settings page
 */

function rsssl_settings_page()
{
    if ( ! rsssl_user_can_manage()) {
        return;
    }

?>
	<div id="really-simple-ssl" class="rsssl"></div>
	<div id="really-simple-ssl-modal"></div>
    <?php
}

/**
 * If the rest api is blocked, the code will try an admin ajax call as fall back.
 *
 * @return void
 */
function rsssl_rest_api_fallback()
{
    $response = $data = [];
    $error    = $action = $test = $do_action = false;

if ( ! rsssl_user_can_manage()) {
        $error = true;
    }
    //if the site is using this fallback, we want to show a notice
    update_option('rsssl_ajax_fallback_active', time(), false);
    if (isset($_GET['rest_action'])) {
        $action = sanitize_text_field($_GET['rest_action']);
        if (strpos($action, 'reallysimplessl/v1/tests/') !== false) {
            $test = strtolower(str_replace('reallysimplessl/v1/tests/', '', $action));
        }
    }
    $requestData = json_decode(file_get_contents('php://input'), true);
    if ($requestData) {
        $action = $requestData['path'] ?? false;
        $action = sanitize_text_field($action);
        $data = $requestData['data'] ?? false;
        if (strpos($action, 'reallysimplessl/v1/do_action/') !== false) {
            $do_action = strtolower(str_replace('reallysimplessl/v1/do_action/', '', $action));
        }
    }
    if (!$error) {
        if (strpos($action, 'fields/get') !== false) {
            $response = rsssl_rest_api_fields_get();
        } else if (strpos($action, 'fields/set') !== false) {
            $request = new WP_REST_Request();
            $response = rsssl_rest_api_fields_set($request, $data);
        } else if ($test) {
            $request = new WP_REST_Request();
            $data = $_GET['data'] ?? false;
            $data = json_decode(stripcslashes($data));
            $data = (array)$data;
            $nonce = isset($_GET['nonce']) ? sanitize_text_field($_GET['nonce']) : false;
            $id = isset($_GET['id']) ? sanitize_text_field($_GET['id']) : false;
            $state = isset($_GET['state']) ? sanitize_title($_GET['state']) : false;
            $request->set_param('test', $test);
            $request->set_param('state', $state);
            $request->set_param('id', $id);
            $request->set_param('nonce', $nonce);
            //remove
            foreach ($_GET as $key => $value) {
                $data[$key] = sanitize_text_field($value);
            }
            $response = rsssl_run_test($request, $data);
        } elseif ($do_action) {
            $request = new WP_REST_Request();
            $request->set_param('action', $do_action);
            $response = rsssl_do_action($request, $data);
        }
    }
    header("Content-Type: application/json");
    echo json_encode($response);
    exit;
}

add_action('wp_ajax_rsssl_rest_api_fallback', 'rsssl_rest_api_fallback');

add_action('rest_api_init', 'rsssl_settings_rest_route', 10);
function rsssl_settings_rest_route()
{
    if (!rsssl_user_can_manage()) {
        return;
    }

register_rest_route('reallysimplessl/v1', 'fields/get', array(
        'methods' => 'GET',
        'callback' => 'rsssl_rest_api_fields_get',
        'permission_callback' => function () {
            return rsssl_user_can_manage();
        }
    ));

register_rest_route('reallysimplessl/v1', 'fields/set', array(
        'methods' => 'POST',
        'callback' => 'rsssl_rest_api_fields_set',
        'permission_callback' => function () {
            return rsssl_user_can_manage();
        }
    ));

register_rest_route('reallysimplessl/v1', 'tests/(?P<test>[a-z\_\-]+)', array(
        'methods' => 'GET',
        'callback' => 'rsssl_run_test',
        'permission_callback' => function () {
            return rsssl_user_can_manage();
        }
    ));

register_rest_route('reallysimplessl/v1', 'do_action/(?P<action>[a-z\_\-]+)', array(
        'methods' => 'POST',
        'callback' => 'rsssl_do_action',
        'permission_callback' => function () {
            return rsssl_user_can_manage();
        }
    ));

}

/**
 * Store SSL Labs result
 * @param array $data
 *
 * @return array
 */
function rsssl_store_ssl_labs($data)
{
    if (!rsssl_user_can_manage()) {
        return [];
    }
    update_option('rsssl_ssl_labs_data', $data, false);
    return [];
}

function rsssl_remove_fallback_notice()
{
    if (get_option('rsssl_ajax_fallback_active') !== false) {
        delete_option('rsssl_ajax_fallback_active');
    }
}

/**
 * @param WP_REST_Request $request
 * @param array|bool $ajax_data
 *
 * @return void
 */
function rsssl_do_action($request, $ajax_data = false)
{
    if (!rsssl_user_can_manage()) {
        return;
    }

if (!$ajax_data) {
        rsssl_remove_fallback_notice();
    }
    $action = sanitize_title($request->get_param('action'));
    $data = $ajax_data !== false ? $ajax_data : $request->get_params();

$nonce = $data['nonce'];
    if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
        return;
    }

switch ($action) {
        case 'ssltest_get':
            $response = ['data' => get_option('rsssl_ssl_labs_data')];
            break;
        case 'ssltest_run':
            $response = rsssl_ssltest_run($data);
            break;
        case 'store_ssl_labs':
            $response = rsssl_store_ssl_labs($data);
            break;
        case 'send_test_mail':
            $mailer = new rsssl_mailer();
            $response = $mailer->send_test_mail();
            break;
        case 'send_verification_mail':
            $mailer = new rsssl_mailer();
            $response = $mailer->send_verification_mail( rsssl_get_option('notifications_email_address') );
            break;
        case 'plugin_actions':
            $response = rsssl_plugin_actions($data);
            break;
        case 'clear_cache':
            $response = rsssl_clear_test_caches($data);
            break;
        case 'otherpluginsdata':
            $response = rsssl_other_plugins_data();
            break;
	    case 'get_roles':
		    $roles = rsssl_get_roles();
		    $response = [];
		    $response['roles'] = $roles;
		    break;
        default:
	        $response = apply_filters("rsssl_do_action", [], $action, $data);
    }

if (is_array($response)) {
        $response['request_success'] = true;
    }

return $response;
}

/**
 * @param array $data
 *
 * @return array
 */
function rsssl_clear_test_caches($data)
{
    if (!rsssl_user_can_manage()) {
        return [];
    }

$cache_id = sanitize_title($data['cache_id']);

do_action('rsssl_clear_test_caches', $data);
    return [];
}

/**
 * Process plugin installation or activation actions
 *
 * @param array $data
 *
 * @return array
 */

return rsssl_other_plugins_data($slug);
}

/**
 * Run a request to SSL Labs
 *
 * @param $data
 *
 * @return string
 */
function rsssl_ssltest_run($data)
{
    if (!rsssl_user_can_manage()) {
        return '';
    }
    $url = $data['url'];
    $response = wp_remote_get($url);
    $data = wp_remote_retrieve_body($response);
    if (empty($data)) {
        $data = ['errors' => 'Request failed, please try again.'];
    }
    return $data;
}

/**
 * @param WP_REST_Request $request
 *
 * @return array
 */
function rsssl_run_test($request, $ajax_data = false)
{
    if (!rsssl_user_can_manage()) {
        return [];
    }
    if (!$ajax_data) {
        rsssl_remove_fallback_notice();
    }
    $nonce = $request->get_param('nonce');
	if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
		return [];
	}
    $data = $ajax_data !== false ? $ajax_data : $request->get_params();
    $test = sanitize_title($request->get_param('test'));
    $state = $request->get_param('state');
    $state = $state !== 'undefined' && $state !== 'false' ? $state : false;
    switch ($test) {
        case 'progressdata':
            $response = RSSSL()->progress->get();
            break;
        case 'dismiss_task':
            $response = RSSSL()->progress->dismiss_task($state);
            break;
        default:
            $response = apply_filters("rsssl_run_test", [], $test, $data);
    }
    if (is_array($response)) {
        $response['request_success'] = true;
    }
    return $response;
}

/**
 * Get plugin data for other plugin section
 * @param string $slug
 * @return array
 */
function rsssl_other_plugins_data($slug = false)
{
    if (!rsssl_user_can_manage()) {
        return [];
    }
    $plugins = array(
        [
            'slug' => 'burst-statistics',
            'constant_free' => 'burst_version',
            'constant_premium' => 'burst_pro',
            'wordpress_url' => 'https://wordpress.org/plugins/burst-statistics/',
            'upgrade_url' => 'https://burst-statistics.com/pricing?src=rsssl-plugin',
            'title' => 'Burst Statistics - '. __("Self-hosted and privacy-friendly analytics tool.", 'really-simple-ssl'),
        ],
        [
            'slug' => 'complianz-gdpr',
            'constant_free' => 'cmplz_plugin',
            'constant_premium' => 'cmplz_premium',
            'wordpress_url' => 'https://wordpress.org/plugins/complianz-gdpr/',
            'upgrade_url' => 'https://complianz.io/pricing?src=rsssl-plugin',
            'title' => __("Complianz - Consent Management as it should be", "really-simple-ssl"),
        ],
        [
            'slug' => 'complianz-terms-conditions',
            'constant_free' => 'cmplz_tc_version',
            'wordpress_url' => 'https://wordpress.org/plugins/complianz-terms-conditions/',
            'upgrade_url' => 'https://complianz.io?src=rsssl-plugin',
            'title' => 'Complianz - ' . __("Terms and Conditions", "really-simple-ssl"),
        ],
    );

foreach ($plugins as $index => $plugin) {
        $installer = new rsssl_installer($plugin['slug']);
        if (isset($plugin['constant_premium']) && defined($plugin['constant_premium'])) {
            $plugins[$index]['pluginAction'] = 'installed';
        } else if (!$installer->plugin_is_downloaded() && !$installer->plugin_is_activated()) {
            $plugins[$index]['pluginAction'] = 'download';
        } else if ($installer->plugin_is_downloaded() && !$installer->plugin_is_activated()) {
            $plugins[$index]['pluginAction'] = 'activate';
        } else {
            if (isset($plugin['constant_premium'])) {
                $plugins[$index]['pluginAction'] = 'upgrade-to-premium';
            } else {
                $plugins[$index]['pluginAction'] = 'installed';
            }
        }
    }

if ($slug) {
        foreach ($plugins as $key => $plugin) {
            if ($plugin['slug'] === $slug) {
                return $plugin;
            }
        }
    }
    return ['plugins' => $plugins];

}

/**
 * List of allowed field types
 * @param $type
 *
 * @return mixed|string
 */
function rsssl_sanitize_field_type($type)
{
    $types = [
        'hidden',
        'license',
        'database',
        'checkbox',
        'password',
        'radio',
        'text',
        'textarea',
        'number',
        'email',
        'select',
        'host',
        'permissionspolicy',
        'learningmode',
        'mixedcontentscan',
        'vulnerablemeasures',
        'LetsEncrypt',
        'postdropdown',
        'two_fa_roles',
		'roles_dropdown',
//        'two_fa_table',
//        'verify_email',
    ];
    if ( in_array( $type, $types, true ) ) {
        return $type;
    }
    return 'checkbox';
}

/**
 * @param WP_REST_Request $request
 * @param array $ajax_data
 *
 * @return array
 */
function rsssl_rest_api_fields_set(WP_REST_Request $request, $ajax_data = false): array
{
    if (!rsssl_user_can_manage()) {
        return [];
    }

$fields = $ajax_data ?: $request->get_json_params();
    //get the nonce
    $nonce = false;
    foreach ($fields as $index => $field) {
        if (isset($field['nonce'])) {
            $nonce = $field['nonce'];
            unset($fields[$index]);
        }
    }

if (!wp_verify_nonce($nonce, 'rsssl_nonce')) {
        return [];
    }

$config_fields = rsssl_fields(false);
    $config_ids = array_column($config_fields, 'id');
    foreach ($fields as $index => $field) {

$config_field_index = array_search($field['id'], $config_ids);
        $config_field = $config_fields[$config_field_index];
        if ($config_field_index === false) {
            unset($fields[$index]);
            continue;
        }
        $type = rsssl_sanitize_field_type($field['type']);
        $field_id = sanitize_text_field($field['id']);
        $value = rsssl_sanitize_field($field['value'], $type, $field_id);
        //if an endpoint is defined, we use that endpoint instead
        if (isset($config_field['data_endpoint'])) {
            //the updateItemId allows us to update one specific item in a field set.
            $update_item_id = isset($field['updateItemId']) ? $field['updateItemId'] : false;
            $action = isset($field['action']) && $field['action'] === 'delete' ? 'delete' : 'update';
            $endpoint = $config_field['data_endpoint'];
            if (is_array($endpoint)) {
                $main = $endpoint[0];
                $class = $endpoint[1];
                $function = $endpoint[2];
                if (function_exists($main)) {
                    $main()->$class->$function($value, $update_item_id, $action);
                }
            } else if (function_exists($endpoint)) {
                $endpoint($value, $update_item_id, $action);
            }

unset($fields[$index]);
            continue;
        }

$field['value'] = $value;
        $fields[$index] = $field;
    }

if (is_multisite() && rsssl_is_networkwide_active()) {
        $options = get_site_option('rsssl_options', []);
    } else {
        $options = get_option('rsssl_options', []);
    }

//build a new options array
    foreach ($fields as $field) {
        $prev_value = isset($options[$field['id']]) ? $options[$field['id']] : false;
        do_action("rsssl_before_save_option", $field['id'], $field['value'], $prev_value, $field['type']);
        $options[$field['id']] = apply_filters("rsssl_fieldvalue", $field['value'], $field['id'], $field['type']);
    }
    if (!empty($options)) {
        if (is_multisite() && rsssl_is_networkwide_active()) {
            update_site_option('rsssl_options', $options);
        } else {
            update_option('rsssl_options', $options);
        }
    }
	RSSSL()->admin->clear_admin_notices_cache();
	do_action('rsssl_after_saved_fields', $fields );
	foreach ( $fields as $field ) {
        do_action( "rsssl_after_save_field", $field['id'], $field['value'], $prev_value, $field['type'] );
    }
	return [
            'success' => true,
            'progress' => RSSSL()->progress->get(),
            'fields' => rsssl_fields(true),
    ];
}

/**
 * Update a rsssl option
 * @param string $name
 * @param mixed $value
 *
 * @return void
 */

function rsssl_update_option($name, $value)
{
    if (!rsssl_user_can_manage()) {
        return;
    }
    $config_fields = rsssl_fields(false);
    $config_ids = array_column($config_fields, 'id');
    $config_field_index = array_search($name, $config_ids);
    if ($config_field_index === false) {
        return;
    }

$config_field = $config_fields[$config_field_index];
    $type = $config_field['type'] ?? false;
    if (!$type) {
        return;
    }
    if (is_multisite() && rsssl_is_networkwide_active()) {
        $options = get_site_option('rsssl_options', []);
    } else {
        $options = get_option('rsssl_options', []);
    }
    if (!is_array($options)) $options = [];
    $prev_value = $options[$name] ?? false;
    $name = sanitize_text_field($name);
    $type = rsssl_sanitize_field_type($config_field['type']);
    $value = rsssl_sanitize_field($value, $type, $name);
    $value = apply_filters("rsssl_fieldvalue", $value, sanitize_text_field($name), $type);
    #skip if value wasn't changed
    if (isset($options[$name]) && $options[$name] === $value) {
        return;
    }

$options[$name] = $value;
	if ( is_multisite() && rsssl_is_networkwide_active() ) {
		update_site_option( 'rsssl_options', $options );
	} else {
		update_option( 'rsssl_options', $options );
	}
	$config_field['value'] = $value;
    RSSSL()->admin->clear_admin_notices_cache();
	do_action('rsssl_after_saved_fields',[$config_field] );
	do_action( "rsssl_after_save_field", $name, $value, $prev_value, $type );
}

/**
 * Get the rest api fields
 * @return array
 */
function rsssl_rest_api_fields_get()
{
    if (!rsssl_user_can_manage()) {
        return [];
    }

//	rsssl_update_option('vulnerabilities_intro_shown', false);
    $output = array();
    $fields = rsssl_fields();
    foreach ($fields as $index => $field) {
        /**
         * Load data from source
         */
        if (isset($field['data_source'])) {
            $data_source = $field['data_source'];
            if (is_array($data_source)) {
                $main = $data_source[0];
                $class = $data_source[1];
                $function = $data_source[2];
                $field['value'] = [];
                if (function_exists($main)) {
                    $field['value'] = $main()->$class->$function();
                }
            } else if (function_exists($field['data_source'])) {
                $func = $field['data_source'];
                $field['value'] = $func();
            }
        }

$fields[$index] = $field;
    }

$output['fields'] = $fields;
    $output['request_success'] = true;
    $output['progress'] = RSSSL()->progress->get();
    return apply_filters('rsssl_rest_api_fields_get', $output);
}

/**
 * Sanitize a field
 *
 * @param mixed $value
 * @param string $type
 * @oaram string $id
 *
 * @return array|bool|int|string|void
 */
function rsssl_sanitize_field($value, string $type, string $id)
{
	switch ($type) {
        case 'checkbox':
        case 'number':
            return (int)$value;
        case 'hidden':
            return sanitize_title($value);
        case 'select':
        case 'host':
        case 'text':
        case 'textarea':
        case 'license':
        case 'postdropdown':
            return sanitize_text_field($value);
        case 'multicheckbox':
            if (!is_array($value)) {
                $value = array($value);
            }
            return array_map('sanitize_text_field', $value);
        case 'password':
            return rsssl_encode_password($value);
        case 'email':
            return sanitize_email($value);
        case 'url':
            return esc_url_raw($value);
        case 'permissionspolicy':
            return rsssl_sanitize_permissions_policy($value, $type, $id);
        case 'learningmode':
            return rsssl_sanitize_datatable($value, $type, $id);
        case 'mixedcontentscan':
            return $value;
		case 'roles_dropdown':
        case 'two_fa_roles':
	        $value = !is_array($value) ? [] : $value;
            $roles = rsssl_get_roles();
            foreach ($value as $index => $role) {
                if (! in_array( $role, $roles, true ) ) {
                    unset($value[$index]);
                }
            }
            return $value;
        default:
            return sanitize_text_field($value);
    }
}

/**
 * Sanitize and encode a password
 *
 * @param $password
 *
 * @return mixed|string
 */
function rsssl_encode_password($password)
{
    if (!rsssl_user_can_manage()) {
        return $password;
    }
    if (strlen(trim($password)) === 0) {
        return $password;
    }

$password = sanitize_text_field($password);
    if (strpos($password, 'rsssl_') !== FALSE) {
        return $password;
    }

$key = get_site_option('rsssl_key');
    if (!$key) {
        update_site_option('rsssl_key', time());
        $key = get_site_option('rsssl_key');
    }

$ivlength = openssl_cipher_iv_length('aes-256-cbc');
    $iv = openssl_random_pseudo_bytes($ivlength);
    $ciphertext_raw = openssl_encrypt($password, 'aes-256-cbc', $key, 0, $iv);
    $key = base64_encode($iv . $ciphertext_raw);

return 'rsssl_' . $key;
}

/**
 * Dedicated permission policy sanitization
 *
 * @param $value
 * @param $type
 * @param $field_name
 *
 * @return array|false
 */
function rsssl_sanitize_permissions_policy($value, $type, $field_name)
{
    $possible_keys = apply_filters("rsssl_datatable_datatypes_$type", [
        'id' => 'string',
        'title' => 'string',
        'status' => 'boolean',
    ]);
    // Datatable array will look something like this, whith 0 the row index, and id, title the col indexes.
    // [0] => Array
    //	(
    //		[id] => camera
    //		[title] => Camera
    //	    [value] => ()
    //      [status] => 1/0
    //   )
    //)
    $config_fields = rsssl_fields(false);
    //check if there is a default available
    $default = false;
    foreach ($config_fields as $config_field) {
        if ($config_field['id'] === $field_name) {
            $default = isset($config_field['default']) ? $config_field['default'] : false;
        }
    }

$stored_ids = [];
    if (!is_array($value)) {
        return $default;
    } else {
        foreach ($value as $row_index => $row) {
            //check if we have invalid values
            if (is_array($row)) {
                foreach ($row as $column_index => $row_value) {
                    if ($column_index === 'id' && $row_value === false) {
                        unset($value[$column_index]);
                    }
                }
            }

//has to be an array.
            if (!is_array($row)) {
                if (isset($default[$row_index])) {
                    $value[$row_index] = $default[$row_index];
                } else {
                    unset($value[$row_index]);
                }
            }

foreach ($row as $col_index => $col_value) {
                if (!isset($possible_keys[$col_index])) {
                    unset($value[$row_index][$col_index]);
                } else {
                    $datatype = $possible_keys[$col_index];
                    switch ($datatype) {
                        case 'string':
                            $value[$row_index][$col_index] = sanitize_text_field($col_value);
                            break;
                        case 'int':
                        case 'boolean':
                        default:
                            $value[$row_index][$col_index] = intval($col_value);
                            break;
                    }
                }
            }

//Ensure that all required keys are set with at least an empty value
            foreach ($possible_keys as $key => $data_type) {
                if (!isset($value[$row_index][$key])) {
                    $value[$row_index][$key] = false;
                }
            }
        }
    }

//ensure that there are no duplicate ids
    foreach ($value as $index => $item) {
        if (in_array($item['id'], $stored_ids)) {
            unset($value[$index]);
            continue;
        }
        $stored_ids[] = $item['id'];
    }

//if the default contains items not in the setting (newly added), add them.
    if (count($value) < count($default)) {
        foreach ($default as $def_row_index => $def_row) {
            //check if it is available in the array. If not, add
            if (!in_array($def_row['id'], $stored_ids)) {
                $value[] = $def_row;
            }
        }
    }
    return $value;
}

function rsssl_sanitize_datatable($value, $type, $field_name)
{
    $possible_keys = apply_filters("rsssl_datatable_datatypes_$type", [
        'id' => 'string',
        'title' => 'string',
        'status' => 'boolean',
    ]);

if (!is_array($value)) {
        return false;
    } else {
        foreach ($value as $row_index => $row) {
            //check if we have invalid values
            if (is_array($row)) {
                foreach ($row as $column_index => $row_value) {
                    if ($column_index === 'id' && $row_value === false) {
                        unset($value[$column_index]);
                    }
                }
            }

//has to be an array.
            if (!is_array($row)) {
                unset($value[$row_index]);
            }

/**
 * Check if the server side conditions apply
 *
 * @param array $conditions
 *
 * @return bool
 */

function rsssl_conditions_apply(array $conditions)
{

$defaults = ['relation' => 'AND'];
    $conditions = wp_parse_args($conditions, $defaults);
    $relation = $conditions['relation'] === 'AND' ? 'AND' : 'OR';
    unset($conditions['relation']);
    $condition_applies = true;
    foreach ($conditions as $condition => $condition_value) {
        $invert = substr($condition, 1) === '!';
        $condition = ltrim($condition, '!');

if (is_array($condition_value)) {
            $this_condition_applies = rsssl_conditions_apply($condition_value);
        } else {
            //check if it's a function
            if (substr($condition, -2) === '()') {
                $func = $condition;
                if (preg_match('/(.*)\-\>(.*)->(.*)/i', $func, $matches)) {
                    $base = $matches[1];
                    $class = $matches[2];
                    $func = $matches[3];
                    $func = str_replace('()', '', $func);
                    $this_condition_applies = call_user_func(array($base()->{$class}, $func)) === $condition_value;
                } else {
                    $func = str_replace('()', '', $func);
                    $this_condition_applies = $func() === $condition_value;
                }
            } else {
                $var = $condition;
                if (preg_match('/(.*)\-\>(.*)->(.*)/i', $var, $matches)) {
                    $base = $matches[1];
                    $class = $matches[2];
                    $var = $matches[3];
                    $this_condition_applies = $base()->{$class}->_get($var) === $condition_value;
                } else {
                    $this_condition_applies = rsssl_get_option($var) === $condition_value;
                }
            }

if ($invert) {
                $this_condition_applies = !$this_condition_applies;
            }

}

if ($relation === 'AND') {
            $condition_applies = $condition_applies && $this_condition_applies;
        } else {
            $condition_applies = $condition_applies || $this_condition_applies;
        }
    }

return $condition_applies;
}

/**
 * Fetch all user roles.
 *
 * Tries to get roles from cache first. If roles are not in cache, it fetches them and stores them in cache.
 *
 * @return array An array of roles, each role being an associative array with 'label' and 'value' keys.
 */
function rsssl_get_roles( ): array {
	if ( ! rsssl_admin_logged_in() ) {
		return [];
	}

global $wp_roles;

// Try to get roles from cache
	$roles = wp_cache_get( 'rsssl_roles' );

// If roles are not in cache, fetch and set cache
	if ( ! $roles ) {
		// Just return the names, not the capabilities
		$roles_names = array_keys( $wp_roles->roles );

// Extract unique role values from the role names
		$roles = array_values( array_unique( $roles_names ));
		// Set the roles in cache for future use
		wp_cache_set( 'rsssl_roles', $roles );
	}

return $roles;
}

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