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<?php |
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// @codingStandardsIgnoreFile |
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/** |
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* Registration Access Links. |
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* |
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* Copyright: © 2009-2011 |
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* {@link http://websharks-inc.com/ WebSharks, Inc.} |
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* (coded in the USA) |
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* |
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* Released under the terms of the GNU General Public License. |
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* You should have received a copy of the GNU General Public License, |
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* along with this software. In the main directory, see: /licensing/ |
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* If not, see: {@link http://www.gnu.org/licenses/}. |
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* |
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* @package s2Member\Registrations |
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* @since 3.5 |
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*/ |
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if(!defined('WPINC')) // MUST have WordPress. |
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exit('Do not access this file directly.'); |
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|
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if(!class_exists('c_ws_plugin__s2member_register_access')) |
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{ |
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/** |
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* Registration Access Links. |
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* |
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* @package s2Member\Registrations |
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* @since 3.5 |
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*/ |
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class c_ws_plugin__s2member_register_access |
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{ |
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/** |
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* Encrypts and authenticates a registration link or cookie value. |
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* |
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* @package s2Member\Registrations |
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* @since 261006 |
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* |
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* @param string $string Value to encrypt. |
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* @param string $purpose Registration context: `link` or the cookie field name. |
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* @return string Authenticated encrypted token, or an empty string for an empty value. |
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*/ |
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public static function encrypt_token($string, $purpose) |
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{ |
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$string = is_scalar($string) ? (string)$string : ''; |
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if($string === '' || !is_string($purpose) || $purpose === '') |
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return ''; |
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|
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$encrypted = c_ws_plugin__s2member_utils_encryption::encrypt($string); |
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if($encrypted === '') |
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return ''; |
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$payload = c_ws_plugin__s2member_utils_strings::base64_url_safe_encode($encrypted); |
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//261006.0428 Authenticate even older-runtime encryption; use a separate WordPress salt because legacy ciphertext can expose its encryption key. |
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$signature = hash_hmac('sha256', 's2member:registration:v1:'.$purpose.':'.$payload, wp_salt('auth')); |
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return 's2reg1.'.$payload.'.'.$signature; |
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} |
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|
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/** |
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* Verifies a registration token before decrypting it. |
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* |
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* @package s2Member\Registrations |
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* @since 261006 |
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* |
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* @param string $token Encrypted registration token. |
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* @param string $purpose Expected registration context: `link` or the cookie field name. |
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* @return string Verified plaintext, or an empty string for an invalid token. |
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*/ |
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public static function decrypt_token($token, $purpose) |
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{ |
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if(!is_string($token) || $token === '' || !is_string($purpose) || $purpose === '') |
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return ''; |
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|
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if(strpos($token, 's2reg1.') === 0) |
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{ |
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$parts = explode('.', $token); |
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if(count($parts) !== 3 || $parts[1] === '' || !preg_match('/^[a-f0-9]{64}$/D', $parts[2])) |
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return ''; |
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$signature = hash_hmac('sha256', 's2member:registration:v1:'.$purpose.':'.$parts[1], wp_salt('auth')); |
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if(!hash_equals($signature, $parts[2])) |
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return ''; |
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return c_ws_plugin__s2member_utils_encryption::decrypt(c_ws_plugin__s2member_utils_strings::base64_url_safe_decode($parts[1])); |
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} |
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//261006.0428 Existing authenticated Defuse registrations remain valid; unsigned legacy registrations must never reach the fallback decryptor. |
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return c_ws_plugin__s2member_utils_defuse::decrypt($token); |
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} |
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|
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/** |
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* Generates Registration Access Links. |
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* |
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* @package s2Member\Registrations |
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* @since 3.5 |
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* |
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* @param string $subscr_gateway Payment Gateway associated with a Customer. |
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* @param string $subscr_id Unique Subscr. ID associated with Payment Gateway; associated with a Customer. |
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* @param string $custom Custom String value *(as supplied in Shortcode)*; must start with installation domain name. |
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* @param int|string $item_number An s2Member-generated `item_number` *( i.e., `1` for Level 1, or `level|ccaps|fixed-term`, or `sp|ids|expiration` )*. |
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* @param bool $shrink Optional. Defaults to true. If false, the raw registration link will NOT be reduced in size by s2Member's URL shortening system. |
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* |
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* @return string|bool A Registration Access Link on success, else false on failure. |
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*/ |
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public static function register_link_gen($subscr_gateway = '', $subscr_id = '', $custom = '', $item_number = '', $shrink = TRUE) |
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{ |
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foreach(array_keys(get_defined_vars()) as $__v) $__refs[$__v] =& $$__v; |
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do_action('ws_plugin__s2member_before_register_link_gen', get_defined_vars()); |
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unset($__refs, $__v); |
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|
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if($subscr_gateway && is_string($subscr_gateway) && $subscr_id && is_string($subscr_id) && $custom && is_string($custom) && $item_number && (is_string($item_number) || is_numeric($item_number))) |
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{ |
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$register = self::encrypt_token('subscr_gateway_subscr_id_custom_item_number_time:.:|:.:'.$subscr_gateway.':.:|:.:'.$subscr_id.':.:|:.:'.$custom.':.:|:.:'.$item_number.':.:|:.:'.strtotime('now'), 'link'); |
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|
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$register_link = home_url('/?s2member_register='.urlencode($register)); // Generate long URL/link. |
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$now = strtotime('now'); |
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$register_link_exp_time = apply_filters('ws_plugin__s2member_register_link_exp_time', '2 days', get_defined_vars()); |
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$register_link_expiration = strtotime('+'.$register_link_exp_time, $now); |
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$register_link_expiration = ($register_link_expiration && $register_link_expiration > $now) ? max(7 * DAY_IN_SECONDS, ($register_link_expiration - $now) + DAY_IN_SECONDS) : 7 * DAY_IN_SECONDS; //260612 Allow for custom registration link expiration. |
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|
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if($shrink && ($shorter_url = c_ws_plugin__s2member_utils_urls::shorten($register_link, '', TRUE, $register_link_expiration))) |
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{ |
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$shorter_url_host = c_ws_plugin__s2member_utils_urls::parse_url($shorter_url, PHP_URL_HOST); |
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$home_url_host = c_ws_plugin__s2member_utils_urls::parse_url(home_url('/'), PHP_URL_HOST); |
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$domain_tag = ($shorter_url_host && $home_url_host && strcasecmp($shorter_url_host, $home_url_host) !== 0) ? '#'.$home_url_host : ''; //260612 Personalize external short links only. |
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$register_link = $shorter_url.$domain_tag; |
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} |
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} |
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return apply_filters('ws_plugin__s2member_register_link_gen', ((!empty($register_link)) ? $register_link : FALSE), get_defined_vars()); |
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} |
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|
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/** |
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* Generates Registration Access Links via AJAX. |
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* |
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* @package s2Member\Registrations |
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* @since 3.5 |
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* |
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* @attaches-to ``add_action('wp_ajax_ws_plugin__s2member_reg_access_link_via_ajax');`` |
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* |
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* @return null Exits script execution after output is generated for AJAX caller. |
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*/ |
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public static function reg_access_link_via_ajax() |
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{ |
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do_action('ws_plugin__s2member_before_reg_access_link_via_ajax', get_defined_vars()); |
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|
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status_header(200); // Send a 200 OK status header. |
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header('Content-Type: text/plain; charset=UTF-8'); // Content-Type with UTF-8. |
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while(@ob_end_clean()) ; // Clean any existing output buffers. |
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|
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if(current_user_can('create_users')) // Check privileges as well. Ability to create Users? |
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|
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if(!empty($_POST['ws_plugin__s2member_reg_access_link_via_ajax']) && is_string($nonce = $_POST['ws_plugin__s2member_reg_access_link_via_ajax']) && wp_verify_nonce($nonce, 'ws-plugin--s2member-reg-access-link-via-ajax')) |
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|
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if(($_p = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST))) && isset ($_p['s2member_reg_access_link_subscr_gateway'], $_p['s2member_reg_access_link_subscr_id'], $_p['s2member_reg_access_link_custom'], $_p['s2member_reg_access_link_item_number'])) |
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$register_link = c_ws_plugin__s2member_register_access::register_link_gen((string)$_p['s2member_reg_access_link_subscr_gateway'], (string)$_p['s2member_reg_access_link_subscr_id'], (string)$_p['s2member_reg_access_link_custom'], (string)$_p['s2member_reg_access_link_item_number']); |
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|
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exit(apply_filters('ws_plugin__s2member_reg_access_link_via_ajax', ((!empty($register_link)) ? $register_link : ''), get_defined_vars())); |
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} |
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|
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/** |
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* Checks registration cookies. |
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* |
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* @package s2Member\Registrations |
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* @since 110707 |
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* |
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* @return array|bool An array of cookies if they're OK, else false. |
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*/ |
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public static function reg_cookies_ok() |
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{ |
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global $wpdb; |
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/** @var $wpdb \wpdb */ |
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|
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do_action('ws_plugin__s2member_before_reg_cookies_ok', get_defined_vars()); |
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|
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if(isset ($_COOKIE['s2member_subscr_gateway'], $_COOKIE['s2member_subscr_id'], $_COOKIE['s2member_custom'], $_COOKIE['s2member_item_number'])) |
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if(($subscr_gateway = self::decrypt_token((string)$_COOKIE['s2member_subscr_gateway'], 'subscr_gateway')) && ($subscr_id = self::decrypt_token((string)$_COOKIE['s2member_subscr_id'], 'subscr_id')) && preg_match('/^'.preg_quote(preg_replace('/\:([0-9]+)$/', '', $_SERVER['HTTP_HOST']), '/').'/i', ($custom = self::decrypt_token((string)$_COOKIE['s2member_custom'], 'custom'))) && preg_match($GLOBALS['WS_PLUGIN__']['s2member']['c']['membership_item_number_w_level_regex'], ($item_number = self::decrypt_token((string)$_COOKIE['s2member_item_number'], 'item_number'))) && !$wpdb->get_var("SELECT `user_id` FROM `".$wpdb->usermeta."` WHERE `meta_key` = '".$wpdb->prefix."s2member_subscr_id' AND `meta_value` = '".esc_sql($subscr_id)."' LIMIT 1")) |
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$reg_cookies_ok = $reg_cookies = array('subscr_gateway' => $subscr_gateway, 'subscr_id' => $subscr_id, 'custom' => $custom, 'item_number' => $item_number); |
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|
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return apply_filters('ws_plugin__s2member_reg_cookies_ok', !empty($reg_cookies_ok) && !empty($reg_cookies) ? $reg_cookies : FALSE, get_defined_vars()); |
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} |
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} |
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} |
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|
