/**
* Handles PayPal Button encryption.
*
* This uses the PayPal API. optimizeMember will NOT attempt to encrypt Buttons until there is at least a Business Email Address and API Username configured.
* optimizeMember also maintains a log of communication with the PayPal API. If logging is enabled, check: `/wp-content/plugins/optimizemember-logs/paypal-api.log`.
*
* @package optimizeMember\PayPal
* @since 3.5
*
* @param str $code The PayPal Button Code before encryption.
* @param array $vars An array of defined variables in the scope of the calling Filter.
* @return str The Resulting PayPal Button Code *( possibly encrypted, depending on configuration )*.
*/
public static function sc_paypal_button_encryption($code = FALSE, $vars = FALSE)
{
eval('foreach(array_keys(get_defined_vars())as$__v)$__refs[$__v]=&$$__v;');
do_action("ws_plugin__optimizemember_before_sc_paypal_button_encryption", get_defined_vars());
unset($__refs, $__v);
/* Unset defined __refs, __v. */
/**/
if ($GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["paypal_btn_encryption"] && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["paypal_business"] && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["paypal_api_username"]) {
$cache = apply_filters("ws_plugin__optimizemember_sc_paypal_button_encryption_cache", true, get_defined_vars());
/**/
eval('$_code = $vars["_code"]; $attr = $vars["attr"];');
/* Let's unpack ( i.e. use shorter references ) to these two important vars. */
/**/
if ($cache && ($transient = "s2m_btn_" . md5($code . c_ws_plugin__optimizemember_utilities::ver_checksum())) && ($cache = get_transient($transient))) {
$code = $cache;
} else {
if (is_array($inputs = c_ws_plugin__optimizemember_utils_forms::form_whips_2_array($_code)) && !empty($inputs)) {
$paypal = array("METHOD" => "BMCreateButton", "BUTTONCODE" => "ENCRYPTED", "BUTTONTYPE" => $attr["sp"] || $attr["rr"] === "BN" ? "BUYNOW" : "SUBSCRIBE");
/**/
$i = 0;
/* Initialize incremental variable counter. PayPal wants these numbered using L_BUTTONVAR{n}; where {n} starts at zero. */
foreach ($inputs as $input => $value) {
/* Now run through each of the input variables that we parsed from the Full Button Code */
if (!preg_match("/^cmd\$/i", $input)) {
/* The PayPal API method `BMCreateButton` expects (amount|a1|a3) to include 2 decimal places. */
if (preg_match("/^(amount|a1|a3)\$/i", $input)) {
$value = number_format($value, 2, ".", "");
}
/**/
$paypal["L_BUTTONVAR" . $i] = $input . "=" . $value;
$i++;
/* Increment variable counter. */
}
}
/**/
if (($paypal = c_ws_plugin__optimizemember_paypal_utilities::paypal_api_response($paypal)) && empty($paypal["__error"]) && !empty($paypal["WEBSITECODE"]) && ($code = $paypal["WEBSITECODE"])) {
$default_image = "https://www.paypal.com/" . _x("en_US", "s2member-front paypal-button-lang-code", "s2member") . "/i/btn/btn_xpressCheckout.gif";
/**/
$code = preg_replace("/\\<img[^\\>]+\\>/i", "", $code);
/* Remove the 1x1 pixel tracking image that PayPal sticks in there. */
$code = preg_replace("/(\\<input)([^\\>]+)(\\>)/ie", "'\\1'.rtrim(stripslashes('\\2'),'/').' /\\3'", $code);
/* Use XHTML! */
/**/
$code = $attr["image"] && $attr["image"] !== "default" ? preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__optimizemember_utils_strings::esc_ds(esc_attr($attr["image"])) . '"', $code) : preg_replace('/ src\\="(.*?)"/', ' src="' . c_ws_plugin__optimizemember_utils_strings::esc_ds(esc_attr($default_image)) . '"', $code);
/**/
$code = $attr["output"] === "anchor" ? '<a href="' . esc_attr(c_ws_plugin__optimizemember_utils_forms::form_whips_2_url($code)) . '"><img src="' . esc_attr($attr["image"] && $attr["image"] !== "default" ? $attr["image"] : $default_image) . '" style="width:auto; height:auto; border:0;" alt="PayPal" /></a>' : $code;
$code = $attr["output"] === "url" ? c_ws_plugin__optimizemember_utils_forms::form_whips_2_url($code) : $code;
/**/
$cache && $transient ? set_transient($transient, $code, apply_filters("ws_plugin__optimizemember_sc_paypal_button_encryption_cache_exp_time", 3600, get_defined_vars())) : null;
/* Caching? */
}
}
}
}
/* No WordPress Filters apply here. */
/* Instead, use: `ws_plugin__optimizemember_sc_paypal_button`. */
return $code;
/* Button Code. Possibly w/ API encryption now. */
}
/**
* Converts a form with hidden inputs into a URL w/ query string.
*
* @package optimizeMember\Utilities
* @since 3.5
*
* @param str $form A form tag with hidden input fields.
* @return str A URL with query string equivalents.
*/
public static function form_whips_2_url($form = FALSE)
{
if (preg_match("/\\<form(.+?)\\>/is", $form, $form_attr_m)) {
if (preg_match("/(\\s)(action)( ?)(\\=)( ?)(['\"])(.+?)(['\"])/is", $form_attr_m[1], $form_action_m)) {
if ($url = trim($form_action_m[7])) {
foreach ((array) c_ws_plugin__optimizemember_utils_forms::form_whips_2_array($form) as $name => $value) {
if (strlen($name) && strlen($value)) {
/* Check $name -> $value lengths. */
/**/
if (strlen($value = preg_match("/^http(s)?\\:\\/\\//i", $value) ? rawurlencode($value) : urlencode($value))) {
$url = add_query_arg($name, $value, $url);
}
}
}
/**/
return $url;
}
}
}
/**/
return false;
}
