PHP c_ws_plugin__s2member_utils_encryption类代码示例

 /**
  * Handles Registration Links.
  *
  * @package s2Member\Registrations
  * @since 3.5
  *
  * @attaches-to ``add_action("init");``
  *
  * @return null Or exits script execution after redirection.
  */
 public static function register()
 {
     do_action("ws_plugin__s2member_before_register", get_defined_vars());
     /**/
     if (!empty($_GET["s2member_register"])) {
         eval('while (@ob_end_clean ());');
         /* First we end/clean any output buffers that may exist already. */
         /**/
         $msg_503 = _x('<strong>Your Link Expired:</strong><br />Please contact Support if you need assistance.', "s2member-front", "s2member");
         /**/
         if (is_array($register = preg_split("/\\:\\.\\:\\|\\:\\.\\:/", c_ws_plugin__s2member_utils_encryption::decrypt(trim(stripslashes((string) $_GET["s2member_register"])))))) {
             if (count($register) === 6 && $register[0] === "subscr_gateway_subscr_id_custom_item_number_time") {
                 if (is_numeric($register[5]) && $register[5] <= strtotime("now") && $register[5] >= strtotime("-" . apply_filters("ws_plugin__s2member_register_link_exp_time", "2 days", get_defined_vars()))) {
                     $_COOKIE["s2member_subscr_gateway"] = c_ws_plugin__s2member_utils_encryption::encrypt($register[1]);
                     $_COOKIE["s2member_subscr_id"] = c_ws_plugin__s2member_utils_encryption::encrypt($register[2]);
                     $_COOKIE["s2member_custom"] = c_ws_plugin__s2member_utils_encryption::encrypt($register[3]);
                     $_COOKIE["s2member_item_number"] = c_ws_plugin__s2member_utils_encryption::encrypt($register[4]);
                     /**/
                     if (($reg_cookies = c_ws_plugin__s2member_register_access::reg_cookies_ok()) && extract($reg_cookies)) {
                         status_header(200);
                         /* Send a 200 OK status header. */
                         header("Content-Type: text/html; charset=utf-8");
                         /* Content-Type with UTF-8. */
                         /**/
                         setcookie("s2member_subscr_gateway", $_COOKIE["s2member_subscr_gateway"], time() + 31556926, COOKIEPATH, COOKIE_DOMAIN) . setcookie("s2member_subscr_gateway", $_COOKIE["s2member_subscr_gateway"], time() + 31556926, SITECOOKIEPATH, COOKIE_DOMAIN);
                         setcookie("s2member_subscr_id", $_COOKIE["s2member_subscr_id"], time() + 31556926, COOKIEPATH, COOKIE_DOMAIN) . setcookie("s2member_subscr_id", $_COOKIE["s2member_subscr_id"], time() + 31556926, SITECOOKIEPATH, COOKIE_DOMAIN);
                         setcookie("s2member_custom", $_COOKIE["s2member_custom"], time() + 31556926, COOKIEPATH, COOKIE_DOMAIN) . setcookie("s2member_custom", $_COOKIE["s2member_custom"], time() + 31556926, SITECOOKIEPATH, COOKIE_DOMAIN);
                         setcookie("s2member_item_number", $_COOKIE["s2member_item_number"], time() + 31556926, COOKIEPATH, COOKIE_DOMAIN) . setcookie("s2member_item_number", $_COOKIE["s2member_item_number"], time() + 31556926, SITECOOKIEPATH, COOKIE_DOMAIN);
                         /**/
                         do_action("ws_plugin__s2member_during_register", get_defined_vars());
                         /**/
                         if (is_multisite() && c_ws_plugin__s2member_utils_conds::is_multisite_farm() && is_main_site() && ($location = c_ws_plugin__s2member_utils_urls::wp_signup_url())) {
                             echo '<script type="text/javascript">' . "\n";
                             echo "window.location = '" . c_ws_plugin__s2member_utils_strings::esc_js_sq($location) . "';";
                             echo '</script>' . "\n";
                         } else {
                             if ($location = c_ws_plugin__s2member_utils_urls::wp_register_url()) {
                                 echo '<script type="text/javascript">' . "\n";
                                 echo "window.location = '" . c_ws_plugin__s2member_utils_strings::esc_js_sq($location) . "';";
                                 echo '</script>' . "\n";
                             }
                         }
                         exit;
                         /* Clean exit. The browser will now be redirected to ``$location``. */
                     } else {
                         status_header(503) . header("Content-Type: text/html; charset=utf-8") . exit($msg_503);
                     }
                 } else {
                     status_header(503) . header("Content-Type: text/html; charset=utf-8") . exit($msg_503);
                 }
             } else {
                 status_header(503) . header("Content-Type: text/html; charset=utf-8") . exit($msg_503);
             }
         } else {
             status_header(503) . header("Content-Type: text/html; charset=utf-8") . exit($msg_503);
         }
     }
     /**/
     do_action("ws_plugin__s2member_after_register", get_defined_vars());
 }

 /**
  * Shortcode `[s2Member-Pro-Google-Button /]`.
  *
  * @package s2Member\Google
  * @since 1.5
  *
  * @attaches-to ``add_shortcode("s2Member-Pro-Google-Button");``
  *
  * @param array $attr An array of Attributes.
  * @param string $content Content inside the Shortcode.
  * @param string $shortcode The actual Shortcode name itself.
  * @return string The resulting Google Button Code; HTML markup.
  */
 public static function sc_google_button($attr = FALSE, $content = FALSE, $shortcode = FALSE)
 {
     c_ws_plugin__s2member_no_cache::no_cache_constants(true);
     $attr = c_ws_plugin__s2member_utils_strings::trim_qts_deep((array) $attr);
     $jwt_attr = c_ws_plugin__s2member_utils_encryption::encrypt(serialize($attr));
     $attr = shortcode_atts(array("ids" => "0", "exp" => "72", "level" => "1", "ccaps" => "", "desc" => "", "cc" => "USD", "custom" => $_SERVER["HTTP_HOST"], "ta" => "0", "tp" => "0", "tt" => "D", "ra" => "0.01", "rp" => "1", "rt" => "M", "rr" => "1", "rrt" => "", "modify" => "0", "cancel" => "0", "sp" => "0", "image" => "default", "output" => "anchor", "success" => "", "failure" => ""), $attr);
     if ($attr["modify"] || $attr["cancel"]) {
         $default_image = $GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images/google-edit-button.png";
         $code = trim(c_ws_plugin__s2member_utilities::evl(file_get_contents(dirname(dirname(dirname(dirname(__FILE__)))) . "/templates/buttons/google-cancellation-button.php")));
         $code = preg_replace("/%%images%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images")), $code);
         $code = preg_replace("/%%wpurl%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr(home_url())), $code);
         $code = $_code = $attr["image"] && $attr["image"] !== "default" ? preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($attr["image"])) . '"', $code) : preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($default_image)) . '"', $code);
         $code = $attr["output"] === "anchor" ? $code : $code;
         if ($attr["output"] === "url" && preg_match('/ href\\="(.*?)"/', $code, $m) && ($href = $m[1])) {
             $code = $url = c_ws_plugin__s2member_utils_urls::n_amps($href);
         }
         unset($href, $url, $m);
     } else {
         if ($attr["sp"]) {
             $default_image = $GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images/google-wallet-co.png";
             $code = trim(c_ws_plugin__s2member_utilities::evl(file_get_contents(dirname(dirname(dirname(dirname(__FILE__)))) . "/templates/buttons/google-sp-checkout-button.php")));
             $code = preg_replace("/%%images%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images")), $code);
             $code = preg_replace("/%%wpurl%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr(home_url())), $code);
             $code = preg_replace("/%%jwt_attr%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($jwt_attr)), $code);
             $code = preg_replace(array("/%%success%%/", "/%%failure%%/"), array($attr["success"], $attr["failure"]), $code);
             $code = $_code = $attr["image"] && $attr["image"] !== "default" ? preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($attr["image"])) . '"', $code) : preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($default_image)) . '"', $code);
         } else {
             if ($attr["level"] === "*") {
                 $default_image = $GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images/google-wallet-co.png";
                 $code = trim(c_ws_plugin__s2member_utilities::evl(file_get_contents(dirname(dirname(dirname(dirname(__FILE__)))) . "/templates/buttons/google-ccaps-checkout-button.php")));
                 $code = preg_replace("/%%images%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images")), $code);
                 $code = preg_replace("/%%wpurl%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr(home_url())), $code);
                 $code = preg_replace("/%%jwt_attr%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($jwt_attr)), $code);
                 $code = preg_replace(array("/%%success%%/", "/%%failure%%/"), array($attr["success"], $attr["failure"]), $code);
                 $code = $_code = $attr["image"] && $attr["image"] !== "default" ? preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($attr["image"])) . '"', $code) : preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($default_image)) . '"', $code);
             } else {
                 $default_image = $GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images/google-wallet-co.png";
                 $code = trim(c_ws_plugin__s2member_utilities::evl(file_get_contents(dirname(dirname(dirname(dirname(__FILE__)))) . "/templates/buttons/google-checkout-button.php")));
                 $code = preg_replace("/%%images%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($GLOBALS["WS_PLUGIN__"]["s2member_pro"]["c"]["dir_url"] . "/images")), $code);
                 $code = preg_replace("/%%wpurl%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr(home_url())), $code);
                 $code = preg_replace("/%%jwt_attr%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($jwt_attr)), $code);
                 $code = preg_replace(array("/%%success%%/", "/%%failure%%/"), array($attr["success"], $attr["failure"]), $code);
                 $code = $_code = $attr["image"] && $attr["image"] !== "default" ? preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($attr["image"])) . '"', $code) : preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($default_image)) . '"', $code);
             }
         }
     }
     return $code;
 }

 /**
  * Handles processing of Pro-Form billing updates.
  *
  * @package s2Member\Stripe
  * @since 140617
  *
  * @attaches-to ``add_action('init');``
  */
 public static function stripe_update()
 {
     if (!empty($_POST['s2member_pro_stripe_update']['nonce']) && ($nonce = $_POST['s2member_pro_stripe_update']['nonce']) && wp_verify_nonce($nonce, 's2member-pro-stripe-update')) {
         $GLOBALS['ws_plugin__s2member_pro_stripe_update_response'] = array();
         // This holds the global response details.
         $global_response =& $GLOBALS['ws_plugin__s2member_pro_stripe_update_response'];
         $post_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST['s2member_pro_stripe_update']));
         $post_vars['attr'] = !empty($post_vars['attr']) ? (array) unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($post_vars['attr'])) : array();
         $post_vars['attr'] = apply_filters('ws_plugin__s2member_pro_stripe_update_post_attr', $post_vars['attr'], get_defined_vars());
         $post_vars = c_ws_plugin__s2member_utils_captchas::recaptcha_post_vars($post_vars);
         // Collect reCAPTCHA™ post vars.
         if (!c_ws_plugin__s2member_pro_stripe_responses::stripe_form_attr_validation_errors($post_vars['attr'])) {
             if (!($form_submission_validation_errors = c_ws_plugin__s2member_pro_stripe_responses::stripe_form_submission_validation_errors('update', $post_vars))) {
                 if (is_user_logged_in() && ($user = wp_get_current_user()) && ($user_id = $user->ID)) {
                     if (($cur__subscr_cid = get_user_option('s2member_subscr_cid')) && ($cur__subscr_id = get_user_option('s2member_subscr_id'))) {
                         if (is_object($stripe_subscription = c_ws_plugin__s2member_pro_stripe_utilities::get_customer_subscription($cur__subscr_cid, $cur__subscr_id)) && !preg_match('/^canceled$/i', $stripe_subscription->status) && !$stripe_subscription->cancel_at_period_end) {
                             unset($_POST['s2member_pro_stripe_update']['source_token']);
                             // These are good one-time only.
                             unset($_POST['s2member_pro_stripe_update']['source_token_summary']);
                             if (is_object($set_customer_source = c_ws_plugin__s2member_pro_stripe_utilities::set_customer_source($cur__subscr_cid, $post_vars['source_token'], $post_vars, $post_vars['attr']['reject_prepaid']))) {
                                 $global_response = array('response' => _x('<strong>Confirmed.</strong> Your billing information has been updated.', 's2member-front', 's2member'));
                                 if ($post_vars['attr']['success'] && ($custom_success_url = str_ireplace(array('%%s_response%%', '%%response%%'), array(urlencode(c_ws_plugin__s2member_utils_encryption::encrypt($global_response['response'])), urlencode($global_response['response'])), $post_vars['attr']['success'])) && ($custom_success_url = trim(preg_replace('/%%(.+?)%%/i', '', $custom_success_url)))) {
                                     wp_redirect(c_ws_plugin__s2member_utils_urls::add_s2member_sig($custom_success_url, 's2p-v')) . exit;
                                 }
                             } else {
                                 $global_response = array('response' => $set_customer_source, 'error' => TRUE);
                             }
                         } else {
                             $global_response = array('response' => _x('<strong>Unable to update.</strong> You have NO recurring fees. Or, your billing profile is no longer active. Please contact Support if you need assistance.', 's2member-front', 's2member'), 'error' => TRUE);
                         }
                     } else {
                         $global_response = array('response' => _x('<strong>Oops.</strong> No Customer|Subscr. ID. Please contact Support for assistance.', 's2member-front', 's2member'), 'error' => TRUE);
                     }
                 } else {
                     $global_response = array('response' => _x('You\'re <strong>NOT</strong> logged in.', 's2member-front', 's2member'), 'error' => TRUE);
                 }
             } else {
                 // Input form field validation errors.
                 $global_response = $form_submission_validation_errors;
             }
         }
     }
 }

 /**
  * Handles processing of Pro-Forms for Specific Post/Page checkout.
  *
  * @package s2Member\PayPal
  * @since 1.5
  *
  * @attaches-to ``add_action("init");``
  *
  * @return null Or exits script execution after a custom URL redirection; or upon Express Checkout redirection.
  */
 public static function sp_checkout()
 {
     if (!empty($_POST["s2member_pro_paypal_sp_checkout"]["nonce"]) && ($nonce = $_POST["s2member_pro_paypal_sp_checkout"]["nonce"]) && wp_verify_nonce($nonce, "s2member-pro-paypal-sp-checkout") || !empty($_GET["s2member_paypal_xco"]) && $_GET["s2member_paypal_xco"] === "s2member_pro_paypal_sp_checkout_return" && !empty($_GET["token"]) && ($_GET["token"] = esc_html($_GET["token"])) && (empty($_GET["PayerID"]) || ($_GET["PayerID"] = esc_html($_GET["PayerID"]))) && ($xco_post_vars = get_transient("s2m_" . md5("s2member_transient_express_checkout_" . $_GET["token"])))) {
         $GLOBALS["ws_plugin__s2member_pro_paypal_sp_checkout_response"] = array();
         // This holds the global response details.
         $global_response =& $GLOBALS["ws_plugin__s2member_pro_paypal_sp_checkout_response"];
         // This is a shorter reference.
         if (!empty($xco_post_vars)) {
             // A customer is returning from Express Checkout @ PayPal?
             $_POST = $xco_post_vars;
         }
         // POST vars from submission prior to Express Checkout.
         $post_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST["s2member_pro_paypal_sp_checkout"]));
         $post_vars["attr"] = !empty($post_vars["attr"]) ? (array) unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($post_vars["attr"])) : array();
         $post_vars["attr"] = apply_filters("ws_plugin__s2member_pro_paypal_sp_checkout_post_attr", $post_vars["attr"], get_defined_vars());
         if (!empty($xco_post_vars)) {
             $post_vars["attr"]["captcha"] = "0";
         }
         // No need to revalidate captcha in this case.
         $post_vars["name"] = trim($post_vars["first_name"] . " " . $post_vars["last_name"]);
         $post_vars["email"] = apply_filters("user_registration_email", sanitize_email($post_vars["email"]), get_defined_vars());
         if (empty($post_vars["card_expiration"]) && isset($post_vars["card_expiration_month"], $post_vars["card_expiration_year"])) {
             $post_vars["card_expiration"] = $post_vars["card_expiration_month"] . "/" . $post_vars["card_expiration_year"];
         }
         $post_vars = c_ws_plugin__s2member_utils_captchas::recaptcha_post_vars($post_vars);
         // Collect reCAPTCHA™ post vars.
         !empty($_GET["token"]) ? delete_transient("s2m_" . md5("s2member_transient_express_checkout_" . $_GET["token"])) : null;
         if (!c_ws_plugin__s2member_pro_paypal_responses::paypal_form_attr_validation_errors($post_vars["attr"])) {
             if (!($error = c_ws_plugin__s2member_pro_paypal_responses::paypal_form_submission_validation_errors("sp-checkout", $post_vars))) {
                 $cp_attr = c_ws_plugin__s2member_pro_paypal_utilities::paypal_apply_coupon($post_vars["attr"], $post_vars["coupon"], "attr", array("affiliates-silent-post"));
                 $cp_2gbp_attr = c_ws_plugin__s2member_pro_paypal_utilities::paypal_maestro_solo_2gbp($cp_attr, $post_vars["card_type"]);
                 $cost_calculations = c_ws_plugin__s2member_pro_paypal_utilities::paypal_cost(null, $cp_2gbp_attr["ra"], $post_vars["state"], $post_vars["country"], $post_vars["zip"], $cp_2gbp_attr["cc"], $cp_2gbp_attr["desc"]);
                 if (empty($_GET["s2member_paypal_xco"]) && $post_vars["card_type"] === "PayPal" && $cost_calculations["total"] > 0) {
                     $return_url = $cancel_url = is_ssl() ? "https://" : "http://";
                     $return_url = $cancel_url = ($return_url = $cancel_url) . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
                     $return_url = $cancel_url = remove_query_arg(array("token", "PayerID"), $return_url = $cancel_url);
                     $return_url = add_query_arg("s2member_paypal_xco", urlencode("s2member_pro_paypal_sp_checkout_return"), $return_url);
                     $cancel_url = add_query_arg("s2member_paypal_xco", urlencode("s2member_pro_paypal_sp_checkout_cancel"), $cancel_url);
                     $user = is_user_logged_in() && is_object($user = wp_get_current_user()) && ($user_id = $user->ID) ? $user : false;
                     $post_vars["attr"]["invoice"] = uniqid() . "~" . $_SERVER["REMOTE_ADDR"];
                     // Unique invoice w/ IP address too.
                     if (!($paypal_set_xco = array())) {
                         $paypal_set_xco["METHOD"] = "SetExpressCheckout";
                         $paypal_set_xco["RETURNURL"] = $return_url;
                         $paypal_set_xco["CANCELURL"] = $cancel_url;
                         $paypal_set_xco["PAGESTYLE"] = $post_vars["attr"]["ps"];
                         $paypal_set_xco["LOCALECODE"] = $post_vars["attr"]["lc"];
                         $paypal_set_xco["NOSHIPPING"] = $post_vars["attr"]["ns"];
                         $paypal_set_xco["SOLUTIONTYPE"] = "Sole";
                         $paypal_set_xco["LANDINGPAGE"] = "Billing";
                         $paypal_set_xco["ALLOWNOTE"] = "0";
                         $paypal_set_xco["PAYMENTREQUEST_0_PAYMENTACTION"] = "Sale";
                         $paypal_set_xco["MAXAMT"] = $cost_calculations["total"];
                         $paypal_set_xco["PAYMENTREQUEST_0_DESC"] = $cost_calculations["desc"];
                         $paypal_set_xco["PAYMENTREQUEST_0_CUSTOM"] = $post_vars["attr"]["custom"];
                         $paypal_set_xco["PAYMENTREQUEST_0_INVNUM"] = $post_vars["attr"]["invoice"];
                         $paypal_set_xco["PAYMENTREQUEST_0_CURRENCYCODE"] = $cost_calculations["cur"];
                         $paypal_set_xco["PAYMENTREQUEST_0_ITEMAMT"] = $cost_calculations["sub_total"];
                         $paypal_set_xco["PAYMENTREQUEST_0_TAXAMT"] = $cost_calculations["tax"];
                         $paypal_set_xco["PAYMENTREQUEST_0_AMT"] = $cost_calculations["total"];
                         $paypal_set_xco["L_PAYMENTREQUEST_0_QTY0"] = "1";
                         // Always (1).
                         $paypal_set_xco["L_PAYMENTREQUEST_0_NAME0"] = $cost_calculations["desc"];
                         $paypal_set_xco["L_PAYMENTREQUEST_0_NUMBER0"] = $post_vars["attr"]["sp_ids_exp"];
                         $paypal_set_xco["L_PAYMENTREQUEST_0_AMT0"] = $cost_calculations["sub_total"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTONAME"] = $post_vars["name"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTOSTREET"] = $post_vars["street"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTOCITY"] = $post_vars["city"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTOSTATE"] = $post_vars["state"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE"] = $post_vars["country"];
                         $paypal_set_xco["PAYMENTREQUEST_0_SHIPTOZIP"] = $post_vars["zip"];
                         $paypal_set_xco["EMAIL"] = $post_vars["email"];
                     }
                     if (($paypal_set_xco = c_ws_plugin__s2member_paypal_utilities::paypal_api_response($paypal_set_xco)) && empty($paypal_set_xco["__error"])) {
                         set_transient("s2m_" . md5("s2member_transient_express_checkout_" . $paypal_set_xco["TOKEN"]), $_POST, 10800);
                         $endpoint = $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["paypal_sandbox"] ? "www.sandbox.paypal.com" : "www.paypal.com";
                         wp_redirect(add_query_arg("token", urlencode($paypal_set_xco["TOKEN"]), "https://" . $endpoint . "/cgi-bin/webscr?cmd=_express-checkout"));
                         exit;
                         // Clean exit.
                     } else {
                         $global_response = array("response" => $paypal_set_xco["__error"], "error" => true);
                     }
                 } else {
                     if (empty($post_vars["attr"]["invoice"])) {
                         // Only if it's empty.
                         $post_vars["attr"]["invoice"] = uniqid() . "~" . $_SERVER["REMOTE_ADDR"];
                     }
                     if (!($paypal = array())) {
                         if (!empty($_GET["s2member_paypal_xco"]) && $_GET["s2member_paypal_xco"] === "s2member_pro_paypal_sp_checkout_return" && !empty($_GET["token"]) && ($paypal_xco_details = array("METHOD" => "GetExpressCheckoutDetails", "TOKEN" => $_GET["token"])) && ($paypal_xco_details = c_ws_plugin__s2member_paypal_utilities::paypal_api_response($paypal_xco_details)) && empty($paypal_xco_details["__error"])) {
                             $paypal["METHOD"] = "DoExpressCheckoutPayment";
//.........这里部分代码省略.........

 /**
  * Handles processing of Pro Form registrations.
  *
  * @package s2Member\PayPal
  * @since 1.5
  *
  * @attaches-to ``add_action("init");``
  *
  * @return null Or exits script execution after a custom URL redirection.
  */
 public static function paypal_registration()
 {
     if (!empty($_POST["s2member_pro_paypal_registration"]["nonce"]) && ($nonce = $_POST["s2member_pro_paypal_registration"]["nonce"]) && wp_verify_nonce($nonce, "s2member-pro-paypal-registration")) {
         $GLOBALS["ws_plugin__s2member_pro_paypal_registration_response"] = array();
         // This holds the global response details.
         $global_response =& $GLOBALS["ws_plugin__s2member_pro_paypal_registration_response"];
         // This is a shorter reference.
         $post_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST["s2member_pro_paypal_registration"]));
         $post_vars["attr"] = !empty($post_vars["attr"]) ? (array) unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($post_vars["attr"])) : array();
         $post_vars["attr"] = apply_filters("ws_plugin__s2member_pro_paypal_registration_post_attr", $post_vars["attr"], get_defined_vars());
         $post_vars["recaptcha_challenge_field"] = isset($_POST["recaptcha_challenge_field"]) ? trim(stripslashes($_POST["recaptcha_challenge_field"])) : "";
         $post_vars["recaptcha_response_field"] = isset($_POST["recaptcha_response_field"]) ? trim(stripslashes($_POST["recaptcha_response_field"])) : "";
         $post_vars["name"] = trim($post_vars["first_name"] . " " . $post_vars["last_name"]);
         $post_vars["email"] = apply_filters("user_registration_email", sanitize_email($post_vars["email"]), get_defined_vars());
         $post_vars["username"] = is_multisite() ? strtolower($post_vars["username"]) : $post_vars["username"];
         // Force lowercase.
         $post_vars["username"] = preg_replace("/\\s+/", "", sanitize_user($post_vars["_o_username"] = $post_vars["username"], is_multisite()));
         if (!c_ws_plugin__s2member_pro_paypal_responses::paypal_form_attr_validation_errors($post_vars["attr"])) {
             if (!($error = c_ws_plugin__s2member_pro_paypal_responses::paypal_form_submission_validation_errors("registration", $post_vars))) {
                 if (!($create_user = array())) {
                     $_POST["ws_plugin__s2member_custom_reg_field_user_pass1"] = $post_vars["password1"];
                     // Fake this for registration configuration.
                     $_POST["ws_plugin__s2member_custom_reg_field_first_name"] = $post_vars["first_name"];
                     // Fake this for registration configuration.
                     $_POST["ws_plugin__s2member_custom_reg_field_last_name"] = $post_vars["last_name"];
                     // Fake this for registration configuration.
                     $_POST["ws_plugin__s2member_custom_reg_field_opt_in"] = $post_vars["custom_fields"]["opt_in"];
                     // Fake this too.
                     if ($GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["custom_reg_fields"]) {
                         foreach (json_decode($GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["custom_reg_fields"], true) as $field) {
                             $field_var = preg_replace("/[^a-z0-9]/i", "_", strtolower($field["id"]));
                             $field_id_class = preg_replace("/_/", "-", $field_var);
                             if (isset($post_vars["custom_fields"][$field_var])) {
                                 $_POST["ws_plugin__s2member_custom_reg_field_" . $field_var] = $post_vars["custom_fields"][$field_var];
                             }
                         }
                     }
                     $GLOBALS["ws_plugin__s2member_registration_vars"]["ws_plugin__s2member_custom_reg_field_s2member_level"] = $post_vars["attr"]["level"];
                     $GLOBALS["ws_plugin__s2member_registration_vars"]["ws_plugin__s2member_custom_reg_field_s2member_ccaps"] = $post_vars["attr"]["ccaps"];
                     $GLOBALS["ws_plugin__s2member_registration_vars"]["ws_plugin__s2member_custom_reg_field_s2member_auto_eot_time"] = $post_vars["attr"]["tp"] . " " . $post_vars["attr"]["tt"];
                     $_EOT_ =& $GLOBALS["ws_plugin__s2member_registration_vars"]["ws_plugin__s2member_custom_reg_field_s2member_auto_eot_time"];
                     // Quick/shorter reference to this var.
                     $_EOT_ = $post_vars["attr"]["tp"] && $post_vars["attr"]["tt"] ? date("Y-m-d H:i:s", c_ws_plugin__s2member_utils_time::auto_eot_time("", "", "", $_EOT_)) : "";
                     $GLOBALS["ws_plugin__s2member_registration_vars"]["ws_plugin__s2member_custom_reg_field_s2member_custom"] = $post_vars["attr"]["custom"];
                     unset($_EOT_);
                     // We can unset this shorter/reference variable now.
                     $GLOBALS["ws_plugin__s2member_registration_return_url"] = $post_vars["attr"]["success"];
                     // Custom success return.
                     $create_user["user_login"] = $post_vars["username"];
                     // Copy this into a separate array for `wp_create_user()`.
                     $create_user["user_pass"] = wp_generate_password();
                     // Which may fire `c_ws_plugin__s2member_registrations::generate_password()`.
                     $create_user["user_email"] = $post_vars["email"];
                     // Copy this into a separate array for `wp_create_user()`.
                 }
                 if ($post_vars["password1"] && $post_vars["password1"] === $create_user["user_pass"]) {
                     if ((is_multisite() && ($new__user_id = c_ws_plugin__s2member_registrations::ms_create_existing_user($create_user["user_login"], $create_user["user_email"], $create_user["user_pass"])) || ($new__user_id = wp_create_user($create_user["user_login"], $create_user["user_pass"], $create_user["user_email"]))) && !is_wp_error($new__user_id)) {
                         update_user_option($new__user_id, "default_password_nag", false, true);
                         wp_new_user_notification($new__user_id, $create_user["user_pass"]);
                         $global_response = array("response" => sprintf(_x('<strong>Thank you.</strong> Please <a href="%s" rel="nofollow">login</a>.', "s2member-front", "s2member"), esc_attr(wp_login_url())));
                         if ($post_vars["attr"]["success"] && substr($GLOBALS["ws_plugin__s2member_registration_return_url"], 0, 2) === substr($post_vars["attr"]["success"], 0, 2) && ($custom_success_url = str_ireplace(array("%%s_response%%", "%%response%%"), array(urlencode(c_ws_plugin__s2member_utils_encryption::encrypt($global_response["response"])), urlencode($global_response["response"])), $GLOBALS["ws_plugin__s2member_registration_return_url"])) && ($custom_success_url = trim(preg_replace("/%%(.+?)%%/i", "", $custom_success_url)))) {
                             wp_redirect(c_ws_plugin__s2member_utils_urls::add_s2member_sig($custom_success_url, "s2p-v")) . exit;
                         }
                     } else {
                         $global_response = array("response" => _x('<strong>Oops.</strong> A slight problem. Please contact Support for assistance.', "s2member-front", "s2member"), "error" => true);
                     }
                 } else {
                     if ((is_multisite() && ($new__user_id = c_ws_plugin__s2member_registrations::ms_create_existing_user($create_user["user_login"], $create_user["user_email"], $create_user["user_pass"])) || ($new__user_id = wp_create_user($create_user["user_login"], $create_user["user_pass"], $create_user["user_email"]))) && !is_wp_error($new__user_id)) {
                         update_user_option($new__user_id, "default_password_nag", true, true);
                         wp_new_user_notification($new__user_id, $create_user["user_pass"]);
                         $global_response = array("response" => _x('<strong>Thank you.</strong> You\'ll receive an email momentarily.', "s2member-front", "s2member"));
                         if ($post_vars["attr"]["success"] && substr($GLOBALS["ws_plugin__s2member_registration_return_url"], 0, 2) === substr($post_vars["attr"]["success"], 0, 2) && ($custom_success_url = str_ireplace(array("%%s_response%%", "%%response%%"), array(urlencode(c_ws_plugin__s2member_utils_encryption::encrypt($global_response["response"])), urlencode($global_response["response"])), $GLOBALS["ws_plugin__s2member_registration_return_url"])) && ($custom_success_url = trim(preg_replace("/%%(.+?)%%/i", "", $custom_success_url)))) {
                             wp_redirect(c_ws_plugin__s2member_utils_urls::add_s2member_sig($custom_success_url, "s2p-v")) . exit;
                         }
                     } else {
                         $global_response = array("response" => _x('<strong>Oops.</strong> A slight problem. Please contact Support for assistance.', "s2member-front", "s2member"), "error" => true);
                     }
                 }
             } else {
                 $global_response = $error;
             }
         }
     }
 }

 /**
  * Generates a PayPal Proxy Key, for simulated IPN responses.
  *
  * @package s2Member\PayPal
  * @since 3.5
  *
  * @return string A Proxy Key. It's an MD5 Hash, 32 chars, URL-safe.
  */
 public static function paypal_proxy_key_gen()
 {
     global $current_site, $current_blog;
     foreach (array_keys(get_defined_vars()) as $__v) {
         $__refs[$__v] =& ${$__v};
     }
     do_action("ws_plugin__s2member_before_paypal_proxy_key_gen", get_defined_vars());
     unset($__refs, $__v);
     if (is_multisite() && !is_main_site()) {
         $key = md5(c_ws_plugin__s2member_utils_encryption::xencrypt($current_blog->domain . $current_blog->path, false, false));
     } else {
         // Else it's a standard Proxy Key; not on a Multisite Network, or not on the Main Site anyway.
         $key = md5(c_ws_plugin__s2member_utils_encryption::xencrypt(preg_replace("/\\:[0-9]+\$/", "", $_SERVER["HTTP_HOST"]), false, false));
     }
     return apply_filters("ws_plugin__s2member_paypal_proxy_key_gen", $key, get_defined_vars());
 }

 /**
  * XOR two-way encryption/decryption, with a base64 wrapper.
  *
  * @package s2Member\Utilities
  * @since 3.5
  *
  * @param str $base64 A string of data to decrypt. Should still be base64 encoded.
  * @param str $key Optional. Key used originally for encryption. Defaults to the one configured for s2Member. Short of that, defaults to: ``wp_salt()``.
  * @return str Decrypted string.
  */
 public static function xdecrypt($base64 = FALSE, $key = FALSE)
 {
     $base64 = is_string($base64) ? $base64 : "";
     $e = strlen($base64) ? c_ws_plugin__s2member_utils_strings::base64_url_safe_decode($base64) : "";
     if (strlen($e) && preg_match("/^~xe(?:\\:([a-zA-Z0-9]+))?\\|(.*?)\$/s", $e, $md5_e)) {
         $key = c_ws_plugin__s2member_utils_encryption::key($key);
         if (strlen($md5_e[2]) && (!$md5_e[1] || $md5_e[1] === md5($md5_e[2]))) {
             for ($i = 1, $d = ""; $i <= strlen($md5_e[2]); $i++) {
                 $char = substr($md5_e[2], $i - 1, 1);
                 $keychar = substr($key, $i % strlen($key) - 1, 1);
                 $d .= chr(ord($char) - ord($keychar));
             }
         }
         if (isset($d) && is_string($d) && strlen($d)) {
             if (strlen($d = preg_replace("/^~xe\\|/", "", $d, 1, $xe)) && $xe) {
                 $d = $d;
             } else {
                 // Else we need to empty this out.
                 $d = "";
             }
         }
         return isset($d) && is_string($d) && strlen($d) ? $string = $d : "";
     } else {
         // Otherwise we must fail here with an empty string value.
         return "";
     }
 }

//.........这里部分代码省略.........
         $__refs[$__v] =& ${$__v};
     }
     do_action("ws_plugin__s2member_pro_before_sc_authnet_form_after_shortcode_atts", get_defined_vars());
     unset($__refs, $__v);
     if ($attr["cancel"]) {
         $_p = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST));
         /*
         Obtain a possible response and/or validation error.
         */
         $response = c_ws_plugin__s2member_pro_authnet_responses::authnet_cancellation_response($attr);
         /*
         Empty post vars on successful response.
         */
         $_p = $response["response"] && !$response["error"] ? array() : $_p;
         /*
         Build the reCaptcha box via JavaScript.
         */
         if ($attr["captcha"]) {
             $captcha = '<div id="s2member-pro-authnet-cancellation-form-captcha-section" class="s2member-pro-authnet-form-section s2member-pro-authnet-cancellation-form-section s2member-pro-authnet-form-captcha-section s2member-pro-authnet-cancellation-form-captcha-section">' . "\n";
             $captcha .= '<div id="s2member-pro-authnet-cancellation-form-captcha-section-title" class="s2member-pro-authnet-form-section-title s2member-pro-authnet-cancellation-form-section-title s2member-pro-authnet-form-captcha-section-title s2member-pro-authnet-cancellation-form-captcha-section-title">' . "\n";
             $captcha .= _x("Security Verification", "s2member-front", "s2member") . "\n";
             $captcha .= '</div>' . "\n";
             $captcha .= '<div id="s2member-pro-authnet-cancellation-form-captcha-div" class="s2member-pro-authnet-form-div s2member-pro-authnet-cancellation-form-div s2member-pro-authnet-form-captcha-div s2member-pro-authnet-cancellation-form-captcha-div">' . "\n";
             $captcha .= '<label id="s2member-pro-authnet-cancellation-form-captcha-label" class="s2member-pro-authnet-form-captcha-label s2member-pro-authnet-cancellation-form-captcha-label">' . "\n";
             $captcha .= c_ws_plugin__s2member_utils_captchas::recaptcha_script_tag($attr["captcha"], 10) . "\n";
             $captcha .= '</label>' . "\n";
             $captcha .= '</div>' . "\n";
             $captcha .= '</div>' . "\n";
         }
         /*
         Build the hidden input variables.
         */
         $hidden_inputs = '<input type="hidden" name="s2member_pro_authnet_cancellation[nonce]" id="s2member-pro-authnet-cancellation-nonce" value="' . esc_attr(wp_create_nonce("s2member-pro-authnet-cancellation")) . '" />';
         $hidden_inputs .= '<input type="hidden" name="s2member_pro_authnet_cancellation[attr]" id="s2member-pro-authnet-cancellation-attr" value="' . esc_attr(c_ws_plugin__s2member_utils_encryption::encrypt(serialize($attr))) . '" />';
         $hidden_inputs .= '<input type="hidden" name="s2p-option" value="' . esc_attr((string) @$_REQUEST['s2p-option']) . '" />';
         /*
         Get the form template.
         */
         $custom_template = is_file(TEMPLATEPATH . "/authnet-cancellation-form.php") ? TEMPLATEPATH . "/authnet-cancellation-form.php" : '';
         $custom_template = is_file(get_stylesheet_directory() . "/authnet-cancellation-form.php") ? get_stylesheet_directory() . "/authnet-cancellation-form.php" : $custom_template;
         $custom_template = $attr["template"] && is_file(TEMPLATEPATH . "/" . $attr["template"]) ? TEMPLATEPATH . "/" . $attr["template"] : $custom_template;
         $custom_template = $attr["template"] && is_file(get_stylesheet_directory() . "/" . $attr["template"]) ? get_stylesheet_directory() . "/" . $attr["template"] : $custom_template;
         $custom_template = $attr["template"] && is_file(WP_CONTENT_DIR . "/" . $attr["template"]) ? WP_CONTENT_DIR . "/" . $attr["template"] : $custom_template;
         $code = trim(file_get_contents($custom_template ? $custom_template : dirname(dirname(dirname(dirname(__FILE__)))) . "/templates/forms/authnet-cancellation-form.php"));
         $code = trim(!$custom_template || !is_multisite() || !c_ws_plugin__s2member_utils_conds::is_multisite_farm() || is_main_site() ? c_ws_plugin__s2member_utilities::evl($code) : $code);
         /*
         Fill in the action.
         */
         $code = preg_replace("/%%action%%/", c_ws_plugin__s2member_utils_strings::esc_refs(esc_attr($_SERVER["REQUEST_URI"])), $code);
         /*
         Fill in the response.
         */
         $code = preg_replace("/%%response%%/", c_ws_plugin__s2member_utils_strings::esc_refs($response["response"]), $code);
         /*
         Fill in the description.
         */
         $code = preg_replace("/%%description%%/", c_ws_plugin__s2member_utils_strings::esc_refs($attr["desc"]), $code);
         /*
         Fill the captcha section.
         */
         $code = preg_replace("/%%captcha%%/", c_ws_plugin__s2member_utils_strings::esc_refs(@$captcha), $code);
         /*
         Fill hidden inputs.
         */
         $code = preg_replace("/%%hidden_inputs%%/", c_ws_plugin__s2member_utils_strings::esc_refs($hidden_inputs), $code);
         foreach (array_keys(get_defined_vars()) as $__v) {

 /**
  * Google JWT generator.
  *
  * @package s2Member\Google
  * @since 131123
  *
  * @param array $attr An array of Attributes.
  * @param str $content Content inside the Shortcode.
  * @param str $shortcode The actual Shortcode name itself.
  * @return str The resulting Google Button Code, HTML markup.
  */
 public static function google_jwt()
 {
     if (empty($_GET["s2member_pro_google_jwt"])) {
         return;
     }
     // Nothing to do.
     status_header(200);
     // Send a 200 OK status header.
     header("Content-Type: text/plain");
     // Google expects text/plain here.
     while (@ob_end_clean()) {
     }
     // Clean any existing output buffers.
     $current_user = wp_get_current_user();
     if (!empty($_REQUEST["s2member_pro_google_jwt_vars"]["email"])) {
         $em = stripslashes((string) $_REQUEST["s2member_pro_google_jwt_vars"]["email"]);
     } else {
         if ($current_user && !empty($current_user->user_email)) {
             $em = $current_user->user_email;
         } else {
             exit;
         }
     }
     // Not possible.
     if (!empty($_REQUEST["s2member_pro_google_jwt_vars"]["fname"])) {
         $fn = stripslashes((string) $_REQUEST["s2member_pro_google_jwt_vars"]["fname"]);
     } else {
         if ($current_user && !empty($current_user->first_name)) {
             $fn = $current_user->first_name;
         } else {
             if ($current_user && !empty($current_user->display_name)) {
                 $fn = $current_user->display_name;
             } else {
                 $fn = $em;
             }
         }
     }
     if (!empty($_REQUEST["s2member_pro_google_jwt_vars"]["lname"])) {
         $ln = stripslashes((string) $_REQUEST["s2member_pro_google_jwt_vars"]["lname"]);
     } else {
         if ($current_user && !empty($current_user->last_name)) {
             $ln = $current_user->last_name;
         } else {
             $ln = "";
         }
     }
     // No last name available.
     if (empty($_REQUEST["s2member_pro_google_jwt_vars"]["attr"])) {
         exit;
     }
     $attr = stripslashes((string) $_REQUEST["s2member_pro_google_jwt_vars"]["attr"]);
     $attr = (array) unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($attr));
     $attr = array_merge(array("ids" => "0", "exp" => "72", "level" => "1", "ccaps" => "", "desc" => "", "cc" => "USD", "custom" => $_SERVER["HTTP_HOST"], "ta" => "0", "tp" => "0", "tt" => "D", "ra" => "0.01", "rp" => "1", "rt" => "M", "rr" => "1", "rrt" => "", "modify" => "0", "cancel" => "0", "sp" => "0", "image" => "default", "output" => "anchor", "success" => "", "failure" => ""), $attr);
     $attr["tt"] = strtoupper($attr["tt"]);
     $attr["rt"] = strtoupper($attr["rt"]);
     $attr["rr"] = strtoupper($attr["rr"]);
     $attr["ccaps"] = strtolower($attr["ccaps"]);
     $attr["ccaps"] = str_replace(" ", "", $attr["ccaps"]);
     $attr["rr"] = $attr["rt"] === "L" ? "BN" : $attr["rr"];
     $attr["rr"] = $attr["level"] === "*" ? "BN" : $attr["rr"];
     $attr["rr"] = !$attr["tp"] && !$attr["rr"] ? "BN" : $attr["rr"];
     $attr["referencing"] = c_ws_plugin__s2member_utils_users::get_user_subscr_or_wp_id();
     include_once dirname(dirname(dirname(dirname(__FILE__)))) . '/_xtnls/JWT.php';
     if ($attr["sp"]) {
         $attr["sp_ids_exp"] = "sp:" . $attr["ids"] . ":" . $attr["exp"];
         $jwt["iss"] = $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["pro_google_merchant_id"];
         $jwt["aud"] = "Google";
         $jwt["typ"] = "google/payments/inapp/item/v1";
         $jwt["exp"] = time() + 3600;
         $jwt["iat"] = time();
         $jwt["request"] = array("name" => substr($_SERVER["HTTP_HOST"], 0, 50), "description" => substr($attr["desc"], 0, 100), "price" => number_format($attr["ra"], 2, ".", ""), "currencyCode" => $attr["cc"], "sellerData" => json_encode(array("cs" => $attr["custom"], "in" => $attr["sp_ids_exp"], "ip" => $_SERVER["REMOTE_ADDR"], "rf" => $attr["referencing"], "fn" => $fn, "ln" => $ln, "em" => $em)));
         $jwt = JWT::encode($jwt, $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["pro_google_merchant_key"]);
     } else {
         if ($attr["level"] === "*") {
             $attr["level_ccaps_eotper"] = $attr["rt"] !== "L" ? $attr["level"] . ":" . $attr["ccaps"] . ":" . $attr["rp"] . " " . $attr["rt"] : $attr["level"] . ":" . $attr["ccaps"];
             $attr["level_ccaps_eotper"] = rtrim($attr["level_ccaps_eotper"], ":");
             // Right-trim separators from this string so we don't have trailing colons.
             $jwt["iss"] = $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["pro_google_merchant_id"];
             $jwt["aud"] = "Google";
             $jwt["typ"] = "google/payments/inapp/item/v1";
             $jwt["exp"] = time() + 3600;
             $jwt["iat"] = time();
             $jwt["request"] = array("name" => substr($_SERVER["HTTP_HOST"], 0, 50), "description" => substr($attr["desc"], 0, 100), "price" => number_format($attr["ra"], 2, ".", ""), "currencyCode" => $attr["cc"], "sellerData" => json_encode(array("cs" => $attr["custom"], "in" => $attr["level_ccaps_eotper"], "ip" => $_SERVER["REMOTE_ADDR"], "rf" => $attr["referencing"], "fn" => $fn, "ln" => $ln, "em" => $em)));
             $jwt = JWT::encode($jwt, $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["pro_google_merchant_key"]);
         } else {
             if ($attr["rr"] === "BN" || !$attr["tp"] && !$attr["rr"]) {
                 $attr["desc"] = !$attr["desc"] ? $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["level" . $attr["level"] . "_label"] : $attr["desc"];
                 $attr["level_ccaps_eotper"] = $attr["rt"] !== "L" ? $attr["level"] . ":" . $attr["ccaps"] . ":" . $attr["rp"] . " " . $attr["rt"] : $attr["level"] . ":" . $attr["ccaps"];
                 $attr["level_ccaps_eotper"] = rtrim($attr["level_ccaps_eotper"], ":");
//.........这里部分代码省略.........

 /**
  * Handles processing of Pro-Forms for Specific Post/Page checkout.
  *
  * @package s2Member\Stripe
  * @since 140617
  *
  * @attaches-to ``add_action('init');``
  *
  * @return null Or exits script execution after a custom URL redirection.
  */
 public static function stripe_sp_checkout()
 {
     if (!empty($_POST['s2member_pro_stripe_sp_checkout']['nonce']) && ($nonce = $_POST['s2member_pro_stripe_sp_checkout']['nonce']) && wp_verify_nonce($nonce, 's2member-pro-stripe-sp-checkout')) {
         $GLOBALS['ws_plugin__s2member_pro_stripe_sp_checkout_response'] = array();
         // This holds the global response details.
         $global_response =& $GLOBALS['ws_plugin__s2member_pro_stripe_sp_checkout_response'];
         $post_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST['s2member_pro_stripe_sp_checkout']));
         $post_vars['attr'] = !empty($post_vars['attr']) ? (array) unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($post_vars['attr'])) : array();
         $post_vars['attr'] = apply_filters('ws_plugin__s2member_pro_stripe_sp_checkout_post_attr', $post_vars['attr'], get_defined_vars());
         $post_vars['name'] = trim($post_vars['first_name'] . ' ' . $post_vars['last_name']);
         $post_vars['email'] = apply_filters('user_registration_email', sanitize_email($post_vars['email']), get_defined_vars());
         $post_vars['recaptcha_challenge_field'] = isset($_POST['recaptcha_challenge_field']) ? trim(stripslashes($_POST['recaptcha_challenge_field'])) : '';
         $post_vars['recaptcha_response_field'] = isset($_POST['recaptcha_response_field']) ? trim(stripslashes($_POST['recaptcha_response_field'])) : '';
         if (!c_ws_plugin__s2member_pro_stripe_responses::stripe_form_attr_validation_errors($post_vars['attr'])) {
             if (!($form_submission_validation_errors = c_ws_plugin__s2member_pro_stripe_responses::stripe_form_submission_validation_errors('sp-checkout', $post_vars))) {
                 unset($_POST['s2member_pro_stripe_sp_checkout']['source_token']);
                 // Good one-time only.
                 unset($_POST['s2member_pro_stripe_sp_checkout']['source_token_summary']);
                 // Good one-time only.
                 $is_bitcoin = !empty($post_vars['source_token']) && stripos($post_vars['source_token'], 'btcrcv_') === 0;
                 $cp_attr = c_ws_plugin__s2member_pro_stripe_utilities::apply_coupon($post_vars['attr'], $post_vars['coupon'], 'attr', array('affiliates-silent-post'));
                 $cost_calculations = c_ws_plugin__s2member_pro_stripe_utilities::cost(NULL, $cp_attr['ra'], $post_vars['state'], $post_vars['country'], $post_vars['zip'], $cp_attr['cc'], $cp_attr['desc'], $is_bitcoin);
                 if (!$global_response) {
                     if ($cost_calculations['total'] > 0) {
                         if (!is_object($stripe_customer = c_ws_plugin__s2member_pro_stripe_utilities::get_customer(get_current_user_id(), $post_vars['email'], $post_vars['first_name'], $post_vars['last_name'], array(), $post_vars))) {
                             $global_response = array('response' => $stripe_customer, 'error' => TRUE);
                         } else {
                             if (!is_object($stripe_customer = $stripe_customer_with_source = c_ws_plugin__s2member_pro_stripe_utilities::set_customer_source($stripe_customer->id, $post_vars['source_token'], $post_vars))) {
                                 $global_response = array('response' => $stripe_customer, 'error' => TRUE);
                             } else {
                                 if (!is_object($stripe_charge = c_ws_plugin__s2member_pro_stripe_utilities::create_customer_charge($stripe_customer->id, $cost_calculations['total'], $cost_calculations['cur'], $cost_calculations['desc'], array(), $post_vars, $cost_calculations))) {
                                     $global_response = array('response' => $stripe_charge, 'error' => TRUE);
                                 } else {
                                     $new__txn_cid = $stripe_customer->id;
                                     $new__txn_id = $stripe_charge->id;
                                 }
                             }
                         }
                     }
                 }
                 if (!$global_response) {
                     if (empty($new__txn_cid)) {
                         $new__txn_cid = strtoupper('free-' . uniqid());
                     }
                     if (empty($new__txn_id)) {
                         $new__txn_id = strtoupper('free-' . uniqid());
                     }
                     $ipn['txn_type'] = 'web_accept';
                     $ipn['txn_cid'] = $new__txn_cid;
                     $ipn['txn_id'] = $new__txn_id;
                     $ipn['custom'] = $post_vars['attr']['custom'];
                     $ipn['mc_gross'] = $cost_calculations['total'];
                     $ipn['mc_currency'] = $cost_calculations['cur'];
                     $ipn['tax'] = $cost_calculations['tax'];
                     $ipn['payer_email'] = $post_vars['email'];
                     $ipn['first_name'] = $post_vars['first_name'];
                     $ipn['last_name'] = $post_vars['last_name'];
                     if (is_user_logged_in() && ($referencing = c_ws_plugin__s2member_utils_users::get_user_subscr_or_wp_id())) {
                         $ipn['option_name1'] = 'Referencing Customer ID';
                         $ipn['option_selection1'] = $referencing;
                     } else {
                         $ipn['option_name1'] = 'Originating Domain';
                         $ipn['option_selection1'] = $_SERVER['HTTP_HOST'];
                     }
                     $ipn['option_name2'] = 'Customer IP Address';
                     $ipn['option_selection2'] = $_SERVER['REMOTE_ADDR'];
                     $ipn['item_name'] = $cost_calculations['desc'];
                     $ipn['item_number'] = $post_vars['attr']['sp_ids_exp'];
                     $ipn['s2member_paypal_proxy'] = 'stripe';
                     $ipn['s2member_paypal_proxy_use'] = 'pro-emails';
                     $ipn['s2member_paypal_proxy_coupon'] = array('coupon_code' => $cp_attr['_coupon_code'], 'full_coupon_code' => $cp_attr['_full_coupon_code'], 'affiliate_id' => $cp_attr['_coupon_affiliate_id']);
                     $ipn['s2member_paypal_proxy_verification'] = c_ws_plugin__s2member_paypal_utilities::paypal_proxy_key_gen();
                     $ipn['s2member_paypal_proxy_return_url'] = $post_vars['attr']['success'];
                     $ipn['s2member_stripe_proxy_return_url'] = trim(c_ws_plugin__s2member_utils_urls::remote(home_url('/?s2member_paypal_notify=1'), $ipn, array('timeout' => 20)));
                     setcookie('s2member_sp_tracking', $s2member_sp_tracking = c_ws_plugin__s2member_utils_encryption::encrypt($new__txn_id), time() + 31556926, COOKIEPATH, COOKIE_DOMAIN) . setcookie('s2member_sp_tracking', $s2member_sp_tracking, time() + 31556926, SITECOOKIEPATH, COOKIE_DOMAIN) . ($_COOKIE['s2member_sp_tracking'] = $s2member_sp_tracking);
                     if ($sp_access_url = c_ws_plugin__s2member_sp_access::sp_access_link_gen($post_vars['attr']['ids'], $post_vars['attr']['exp'])) {
                         $global_response = array('response' => sprintf(_x('<strong>Thank you.</strong> Your purchase has been approved.<br />&mdash; Please <a href="%s" rel="nofollow">click here</a> to proceed.', 's2member-front', 's2member'), esc_attr($sp_access_url)));
                         if ($post_vars['attr']['success'] && substr($ipn['s2member_stripe_proxy_return_url'], 0, 2) === substr($post_vars['attr']['success'], 0, 2) && ($custom_success_url = str_ireplace(array('%%s_response%%', '%%response%%'), array(urlencode(c_ws_plugin__s2member_utils_encryption::encrypt($global_response['response'])), urlencode($global_response['response'])), $ipn['s2member_stripe_proxy_return_url'])) && ($custom_success_url = trim(preg_replace('/%%(.+?)%%/i', '', $custom_success_url)))) {
                             wp_redirect(c_ws_plugin__s2member_utils_urls::add_s2member_sig($custom_success_url, 's2p-v')) . exit;
                         }
                     } else {
                         $global_response = array('response' => _x('<strong>Oops.</strong> Unable to generate Access Link. Please contact Support for assistance.', 's2member-front', 's2member'), 'error' => TRUE);
                     }
                 }
             } else {
                 // Input form field validation errors.
                 $global_response = $form_submission_validation_errors;
             }
         }
     }
//.........这里部分代码省略.........

 /**
  * s2Member's PayPal Auto-Return/PDT handler (inner processing routine).
  *
  * @package s2Member\PayPal
  * @since 110720
  *
  * @param array $vars Required. An array of defined variables passed by {@link s2Member\PayPal\c_ws_plugin__s2member_paypal_return_in::paypal_return()}.
  * @return array|bool The original ``$paypal`` array passed in (extracted) from ``$vars``, or false when conditions do NOT apply.
  *
  * @todo Optimize with ``empty()`` and ``isset()``.
  */
 public static function cp($vars = array())
 {
     extract($vars);
     if (!empty($paypal["txn_type"]) && preg_match("/^(web_accept|subscr_signup|subscr_payment)\$/i", $paypal["txn_type"]) && (!empty($paypal["item_number"]) && preg_match($GLOBALS["WS_PLUGIN__"]["s2member"]["c"]["membership_item_number_w_level_regex"], $paypal["item_number"])) && (!empty($paypal["subscr_id"]) || !empty($paypal["txn_id"]) && ($paypal["subscr_id"] = $paypal["txn_id"])) && (empty($paypal["payment_status"]) || empty($payment_status_issues) || !preg_match($payment_status_issues, $paypal["payment_status"]))) {
         foreach (array_keys(get_defined_vars()) as $__v) {
             $__refs[$__v] =& ${$__v};
         }
         do_action("ws_plugin__s2member_during_paypal_return_before_subscr_signup", get_defined_vars());
         unset($__refs, $__v);
         if (!get_transient($transient_rtn = "s2m_rtn_" . md5("s2member_transient_" . $_paypal_s)) && set_transient($transient_rtn, time(), 31556926 * 10)) {
             $paypal["s2member_log"][] = "s2Member `txn_type` identified as ( `web_accept|subscr_signup|subscr_payment` ).";
             list($paypal["level"], $paypal["ccaps"], $paypal["eotper"]) = preg_split("/\\:/", $paypal["item_number"], 3);
             $paypal["ip"] = preg_match("/ip address/i", $paypal["option_name2"]) && $paypal["option_selection2"] ? $paypal["option_selection2"] : "";
             $paypal["ip"] = !$paypal["ip"] && preg_match("/^[a-z0-9]+~[0-9\\.]+\$/i", $paypal["invoice"]) ? preg_replace("/^[a-z0-9]+~/i", "", $paypal["invoice"]) : $paypal["ip"];
             $paypal["ip"] = !$paypal["ip"] && $_SERVER["REMOTE_ADDR"] ? $_SERVER["REMOTE_ADDR"] : $paypal["ip"];
             if (preg_match("/^subscr_payment\$/i", $paypal["txn_type"]) && !empty($_GET["s2member_paypal_return_tra"]) && (($tra = c_ws_plugin__s2member_utils_encryption::decrypt(trim(stripslashes($_GET["s2member_paypal_return_tra"])))) && is_array($tra = maybe_unserialize($tra))) && (count($tra) === 11 && isset($tra["ta"], $tra["tp"], $tra["tt"], $tra["ra"], $tra["rp"], $tra["rt"], $tra["rr"], $tra["rrt"], $tra["rra"], $tra["invoice"], $tra["checksum"])) && $tra["invoice"] === $paypal["invoice"] && $tra["checksum"] === md5($paypal["invoice"] . $paypal["ip"] . $paypal["item_number"])) {
                 $tracking_properties = true;
                 $paypal["period1"] = $tra["rr"] !== "BN" && $tra["tp"] ? $tra["tp"] . " " . $tra["tt"] : "0 D";
                 $paypal["mc_amount1"] = $tra["rr"] !== "BN" && $tra["tp"] ? number_format($tra["ta"], 2, ".", "") : "0.00";
                 $paypal["period3"] = $tra["rp"] . " " . $tra["rt"];
                 $paypal["mc_amount3"] = $tra["ra"];
                 $paypal["recurring"] = $tra["rr"] === "1" ? "1" : "0";
                 $paypal["initial_term"] = preg_match("/^[1-9]/", $paypal["period1"]) ? $paypal["period1"] : "0 D";
                 $paypal["initial"] = strlen($paypal["mc_amount1"]) && preg_match("/^[1-9]/", $paypal["period1"]) ? $paypal["mc_amount1"] : $paypal["mc_amount3"];
                 $paypal["regular"] = $paypal["mc_amount3"];
                 $paypal["regular_term"] = $paypal["period3"];
                 $paypal["recurring"] = $paypal["recurring"] ? $paypal["mc_amount3"] : "0";
                 $ipn_signup_vars = $paypal;
                 /* Create array of wouldbe IPN signup vars w/o s2member_log. */
                 unset($ipn_signup_vars["s2member_log"]);
             } else {
                 if (preg_match("/^(web_accept|subscr_signup)\$/i", $paypal["txn_type"])) {
                     $tracking_properties = true;
                     $paypal["period1"] = preg_match("/^[1-9]/", $paypal["period1"]) ? $paypal["period1"] : "0 D";
                     $paypal["mc_amount1"] = strlen($paypal["mc_amount1"]) && $paypal["mc_amount1"] > 0 ? $paypal["mc_amount1"] : "0.00";
                     if (preg_match("/^web_accept\$/i", $paypal["txn_type"])) {
                         $paypal["period3"] = $paypal["eotper"] ? $paypal["eotper"] : "1 L";
                         $paypal["mc_amount3"] = $paypal["mc_gross"];
                     }
                     $paypal["initial_term"] = preg_match("/^[1-9]/", $paypal["period1"]) ? $paypal["period1"] : "0 D";
                     $paypal["initial"] = strlen($paypal["mc_amount1"]) && preg_match("/^[1-9]/", $paypal["period1"]) ? $paypal["mc_amount1"] : $paypal["mc_amount3"];
                     $paypal["regular"] = $paypal["mc_amount3"];
                     $paypal["regular_term"] = $paypal["period3"];
                     $paypal["recurring"] = $paypal["recurring"] ? $paypal["mc_amount3"] : "0";
                     $ipn_signup_vars = $paypal;
                     /* Create array of wouldbe IPN signup vars w/o s2member_log. */
                     unset($ipn_signup_vars["s2member_log"]);
                 }
             }
             /*
             New Subscription with advanced update vars (option_name1, option_selection1)? Used in Subscr. Modifications.
             */
             if (preg_match("/(referenc|associat|updat|upgrad)/i", $paypal["option_name1"]) && $paypal["option_selection1"]) {
                 foreach (array_keys(get_defined_vars()) as $__v) {
                     $__refs[$__v] =& ${$__v};
                 }
                 do_action("ws_plugin__s2member_during_paypal_return_before_subscr_signup_w_update_vars", get_defined_vars());
                 unset($__refs, $__v);
                 $paypal["s2member_log"][] = "s2Member `txn_type` identified as ( `web_accept|subscr_signup|subscr_payment` ) w/ update vars.";
                 if (($user_id = c_ws_plugin__s2member_utils_users::get_user_id_with($paypal["subscr_id"], $paypal["option_selection1"])) && is_object($user = new WP_User($user_id)) && $user->ID) {
                     if (!$user->has_cap("administrator")) {
                         $processing = $modifying = $during = true;
                         foreach (array_keys(get_defined_vars()) as $__v) {
                             $__refs[$__v] =& ${$__v};
                         }
                         do_action("ws_plugin__s2member_during_paypal_return_during_before_subscr_signup_w_update_vars", get_defined_vars());
                         do_action("ws_plugin__s2member_during_collective_mods", $user_id, get_defined_vars(), "rtn-upgrade-downgrade", "modification", "s2member_level" . $paypal["level"]);
                         unset($__refs, $__v);
                         $fields = get_user_option("s2member_custom_fields", $user_id);
                         $user_reg_ip = get_user_option("s2member_registration_ip", $user_id);
                         $user_reg_ip = $paypal["ip"] = $user_reg_ip ? $user_reg_ip : $paypal["ip"];
                         if (is_multisite() && !is_user_member_of_blog($user_id)) {
                             add_existing_user_to_blog(array("user_id" => $user_id, "role" => "s2member_level" . $paypal["level"]));
                             $user = new WP_User($user_id);
                         }
                         $current_role = c_ws_plugin__s2member_user_access::user_access_role($user);
                         if ($current_role !== "s2member_level" . $paypal["level"]) {
                             $user->set_role("s2member_level" . $paypal["level"]);
                         }
                         if ($paypal["ccaps"] && preg_match("/^-all/", str_replace("+", "", $paypal["ccaps"]))) {
                             foreach ($user->allcaps as $cap => $cap_enabled) {
                                 if (preg_match("/^access_s2member_ccap_/", $cap)) {
                                     $user->remove_cap($ccap = $cap);
                                 }
                             }
                         }
                         if ($paypal["ccaps"] && preg_replace("/^-all[\r\n\t\\s;,]*/", "", str_replace("+", "", $paypal["ccaps"]))) {
                             foreach (preg_split("/[\r\n\t\\s;,]+/", preg_replace("/^-all[\r\n\t\\s;,]*/", "", str_replace("+", "", $paypal["ccaps"]))) as $ccap) {
                                 if (strlen($ccap = trim(strtolower(preg_replace("/[^a-z_0-9]/i", "", $ccap))))) {
//.........这里部分代码省略.........

 /**
  * Creates a File Download Key.
  *
  * Builds a hash of: ``date('Y-m-d') . $_SERVER['REMOTE_ADDR'] . $_SERVER['HTTP_USER_AGENT'] . $file``.
  *
  * @package s2Member\Files
  * @since 3.5
  *
  * @param string $file Location of your protected file, relative to the `/s2member-files/` directory.
  *   In other words, just the name of the file *(i.e., `file.zip` )*.
  * @param string $directive Optional. One of `ip-forever|universal|cache-compatible`.
  *   `ip-forever` = a Download Key that never expires, tied only to a specific file and IP address.
  *   `universal` and/or `cache-compatible` = a Download Key which never expires, and is NOT tied to any specific User. Use at your own risk.
  *
  * @return string A Download Key. MD5 hash, 32 characters, URL-safe.
  */
 public static function file_download_key($file = NULL, $directive = NULL)
 {
     foreach (array_keys(get_defined_vars()) as $__v) {
         $__refs[$__v] =& ${$__v};
     }
     do_action('ws_plugin__s2member_before_file_download_key', get_defined_vars());
     unset($__refs, $__v);
     $file = $file && is_string($file) && ($file = trim($file, '/')) ? $file : '';
     if ($directive === 'ip-forever' && c_ws_plugin__s2member_no_cache::no_cache_constants(TRUE)) {
         $salt = $file . $_SERVER['REMOTE_ADDR'];
     } else {
         if ($directive === 'universal' || $directive === 'cache-compatible' || $directive) {
             $salt = $file;
         } else {
             if (c_ws_plugin__s2member_no_cache::no_cache_constants(TRUE)) {
                 $salt = date('Y-m-d') . $_SERVER['REMOTE_ADDR'] . $_SERVER['HTTP_USER_AGENT'] . $file;
             }
         }
     }
     $key = !empty($salt) ? md5(c_ws_plugin__s2member_utils_encryption::xencrypt($salt, FALSE, FALSE)) : '';
     return apply_filters('ws_plugin__s2member_file_download_key', $key, get_defined_vars());
 }

 /**
  * Handles the return of Tax for Pro Forms, via AJAX; through a JSON object.
  *
  * @package s2Member\PayPal
  * @since 1.5
  *
  * @return null Or exits script execution after returning data for AJAX caller.
  *
  * @todo Check the use of ``strip_tags()`` in this routine?
  * @todo Continue optimizing this routine with ``empty()`` and ``isset()``.
  * @todo Candidate for the use of ``ifsetor()``?
  */
 public static function paypal_ajax_tax()
 {
     if (!empty($_POST["ws_plugin__s2member_pro_paypal_ajax_tax"]) && ($nonce = $_POST["ws_plugin__s2member_pro_paypal_ajax_tax"]) && (wp_verify_nonce($nonce, "ws-plugin--s2member-pro-paypal-ajax-tax") || c_ws_plugin__s2member_utils_encryption::decrypt($nonce) === "ws-plugin--s2member-pro-paypal-ajax-tax")) {
         status_header(200);
         // Send a 200 OK status header.
         header("Content-Type: text/plain; charset=UTF-8");
         // Content-Type text/plain with UTF-8.
         while (@ob_end_clean()) {
         }
         // Clean any existing output buffers.
         if (!empty($_POST["ws_plugin__s2member_pro_paypal_ajax_tax_vars"]) && is_array($_p_tax_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST["ws_plugin__s2member_pro_paypal_ajax_tax_vars"])))) {
             if (is_array($attr = !empty($_p_tax_vars["attr"]) ? unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($_p_tax_vars["attr"])) : false)) {
                 $attr = !empty($attr["coupon"]) ? c_ws_plugin__s2member_pro_paypal_utilities::paypal_apply_coupon($attr, $attr["coupon"]) : $attr;
                 $trial = $attr["rr"] !== "BN" && $attr["tp"] ? true : false;
                 // Is there a trial?
                 $sub_total_today = $trial ? $attr["ta"] : $attr["ra"];
                 // What is the sub-total today?
                 $state = strip_tags($_p_tax_vars["state"]);
                 $country = strip_tags($_p_tax_vars["country"]);
                 $zip = strip_tags($_p_tax_vars["zip"]);
                 $currency = $attr["cc"];
                 // Currency.
                 $desc = $attr["desc"];
                 // Description.
                 /* Trial is `null` in this function call. We only need to return what it costs today.
                 			However, we do tag on a "trial" element in the array so the ajax routine will know about this. */
                 $a = c_ws_plugin__s2member_pro_paypal_utilities::paypal_cost(null, $sub_total_today, $state, $country, $zip, $currency, $desc);
                 echo json_encode(array("trial" => $trial, "sub_total" => $a["sub_total"], "tax" => $a["tax"], "tax_per" => $a["tax_per"], "total" => $a["total"], "cur" => $a["cur"], "cur_symbol" => $a["cur_symbol"], "desc" => $a["desc"]));
             }
         }
         exit;
         // Clean exit.
     }
 }

 /**
  * Creates a File Download Key.
  *
  * Builds a hash of: ``date("Y-m-d") . $_SERVER["REMOTE_ADDR"] . $_SERVER["HTTP_USER_AGENT"] . $file``.
  *
  * @package s2Member\Files
  * @since 3.5
  *
  * @param str $file Location of your protected file, relative to the `/s2member-files/` directory.
  * 	In other words, just the name of the file *(i.e. `file.zip` )*.
  * @param str $directive Optional. One of `ip-forever|universal|cache-compatible`.
  * 	`ip-forever` = a Download Key that never expires, tied only to a specific file and IP address.
  * 	`universal` and/or `cache-compatible` = a Download Key which never expires, and is NOT tied to any specific User. Use at your own risk.
  * @return str A Download Key. MD5 hash, 32 characters, URL-safe.
  */
 public static function file_download_key($file = FALSE, $directive = FALSE)
 {
     foreach (array_keys(get_defined_vars()) as $__v) {
         $__refs[$__v] =& ${$__v};
     }
     do_action("ws_plugin__s2member_before_file_download_key", get_defined_vars());
     unset($__refs, $__v);
     $file = $file && is_string($file) && ($file = trim($file, "/")) ? $file : "";
     if ($directive === "ip-forever" && c_ws_plugin__s2member_no_cache::no_cache_constants(true)) {
         $salt = $file . $_SERVER["REMOTE_ADDR"];
     } else {
         if ($directive === "universal" || $directive === "cache-compatible" || $directive) {
             $salt = $file;
         } else {
             if (c_ws_plugin__s2member_no_cache::no_cache_constants(true)) {
                 $salt = date("Y-m-d") . $_SERVER["REMOTE_ADDR"] . $_SERVER["HTTP_USER_AGENT"] . $file;
             }
         }
     }
     $key = !empty($salt) ? md5(c_ws_plugin__s2member_utils_encryption::xencrypt($salt, false, false)) : "";
     return apply_filters("ws_plugin__s2member_file_download_key", $key, get_defined_vars());
 }

 /**
  * Handles the return of Tax for Pro-Forms, via AJAX; through a JSON object.
  *
  * @package s2Member\Stripe
  * @since 140617
  */
 public static function stripe_ajax_tax()
 {
     if (!empty($_POST['ws_plugin__s2member_pro_stripe_ajax_tax']) && ($nonce = $_POST['ws_plugin__s2member_pro_stripe_ajax_tax']) && (wp_verify_nonce($nonce, 'ws-plugin--s2member-pro-stripe-ajax-tax') || c_ws_plugin__s2member_utils_encryption::decrypt($nonce) === 'ws-plugin--s2member-pro-stripe-ajax-tax')) {
         status_header(200);
         // Send a 200 OK status header.
         header('Content-Type: text/plain; charset=UTF-8');
         // Content-Type text/plain with UTF-8.
         while (@ob_end_clean()) {
         }
         // Clean any existing output buffers.
         if (!empty($_POST['ws_plugin__s2member_pro_stripe_ajax_tax_vars']) && is_array($_p_tax_vars = c_ws_plugin__s2member_utils_strings::trim_deep(stripslashes_deep($_POST['ws_plugin__s2member_pro_stripe_ajax_tax_vars'])))) {
             if (is_array($attr = !empty($_p_tax_vars['attr']) ? unserialize(c_ws_plugin__s2member_utils_encryption::decrypt($_p_tax_vars['attr'])) : FALSE)) {
                 $attr = !empty($attr['coupon']) ? c_ws_plugin__s2member_pro_stripe_utilities::apply_coupon($attr, $attr['coupon']) : $attr;
                 $trial = $attr['rr'] !== 'BN' && $attr['tp'] ? TRUE : FALSE;
                 // Is there a trial?
                 $sub_total_today = $trial ? $attr['ta'] : $attr['ra'];
                 // What is the sub-total today?
                 $state = strip_tags($_p_tax_vars['state']);
                 $country = strip_tags($_p_tax_vars['country']);
                 $zip = strip_tags($_p_tax_vars['zip']);
                 $currency = $attr['cc'];
                 $desc = $attr['desc'];
                 /* Trial is `null` in this function call. We only need to return what it costs today.
                 			However, we do tag on a 'trial' element in the array so the ajax routine will know about this. */
                 $a = c_ws_plugin__s2member_pro_stripe_utilities::cost(NULL, $sub_total_today, $state, $country, $zip, $currency, $desc);
                 echo json_encode(array('trial' => $trial, 'sub_total' => $a['sub_total'], 'tax' => $a['tax'], 'tax_per' => $a['tax_per'], 'total' => $a['total'], 'cur' => $a['cur'], 'cur_symbol' => $a['cur_symbol'], 'desc' => $a['desc']));
             }
         }
         exit;
         // Clean exit.
     }
 }