| 1 |
<?php |
| 2 |
/** |
| 3 |
* Payment Helper - Global payment utilities |
| 4 |
* |
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* @package SureDonation |
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*/ |
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|
| 8 |
namespace SureDonation\Inc\Payments; |
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|
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use SureDonation\Inc\Database\Tables\Donations; |
| 11 |
use SureDonation\Inc\Helper; |
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use SureDonation\Inc\Payments\Offline\Offline_Helper; |
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use SureDonation\Inc\Payments\PayPal\PayPal_Helper; |
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use SureDonation\Inc\Payments\Stripe\Stripe_Helper; |
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use SureDonation\Inc\Post_Types\Donation_Form; |
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use WP_Error; |
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|
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// Exit if accessed directly. |
| 19 |
if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* Payment_Helper class |
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* Provides gateway-agnostic payment utilities |
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* |
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* @since 0.0.1 |
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*/ |
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class Payment_Helper { |
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/** |
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* Option key for payment settings within consolidated options. |
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* |
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* @since 0.0.1 |
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*/ |
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public const OPTION_KEY = 'payment_settings'; |
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|
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/** |
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* Allowed currency sign positions. Single source of truth for the getter |
| 39 |
* and every REST write handler that validates the setting. |
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* |
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* @since 1.3.0 |
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* @var array<int, string> |
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*/ |
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public const ALLOWED_SIGN_POSITIONS = [ 'auto', 'left', 'right', 'left_space', 'right_space' ]; |
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|
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/** |
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* Get all payment settings |
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* |
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* @return array<string, mixed> Payment settings. |
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* @since 0.0.1 |
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*/ |
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public static function get_all_payment_settings() { |
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$options = Helper::get_suredonation_option( self::OPTION_KEY, [] ); |
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|
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// Ensure default structure. |
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$defaults = [ |
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'currency' => 'USD', |
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'payment_mode' => 'test', // Valid values: test or live. |
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// Currency symbol placement for displayed amounts. 'auto' preserves |
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// the historical behavior on every surface (locale-aware in the admin |
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// dashboard, symbol-left on donor-facing output); an explicit value |
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// overrides it everywhere. See get_currency_sign_position(). |
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'currency_sign_position' => 'auto', |
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'stripe' => [], |
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// Intentionally no 'instructions' key: leaving it unset lets |
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// Offline_Helper::get_all_offline_settings() fill the default template |
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// for a never-configured install, while a deliberately-cleared value is |
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// stored as '' and preserved. Seeding '' here would make the two |
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// indistinguishable and permanently mask the default. |
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'offline' => [ |
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'enabled' => false, |
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], |
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'fee_recovery' => [ |
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'fee_percentage' => 2.9, |
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'fee_fixed' => 0.30, |
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'fee_mode' => 'all_gateways', |
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'gateways' => [ |
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'stripe' => [ |
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'fee_percentage' => 2.9, |
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'fee_fixed' => 0.30, |
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'enabled' => true, |
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], |
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'paypal' => [ |
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'fee_percentage' => 0, |
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'fee_fixed' => 0, |
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'enabled' => false, |
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], |
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'offline' => [ |
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'fee_percentage' => 0, |
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'fee_fixed' => 0, |
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'enabled' => false, |
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], |
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], |
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], |
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]; |
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|
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$options_array = is_array( $options ) ? $options : []; |
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return wp_parse_args( $options_array, $defaults ); |
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} |
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|
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/** |
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* Update all payment settings |
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* |
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* @param array<string, mixed> $settings Payment settings. |
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* @return bool True on success. |
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* @since 0.0.1 |
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*/ |
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public static function update_all_payment_settings( $settings ) { |
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return Helper::update_suredonation_option( self::OPTION_KEY, $settings ); |
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} |
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|
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/** |
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* Get gateway-specific settings |
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* |
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* @param string $gateway Gateway name (e.g., 'stripe'). |
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* @return array<string, mixed> Gateway settings. |
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* @since 0.0.1 |
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*/ |
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public static function get_gateway_settings( $gateway ) { |
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$all_settings = self::get_all_payment_settings(); |
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$gateway_settings = $all_settings[ $gateway ] ?? []; |
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return is_array( $gateway_settings ) ? $gateway_settings : []; |
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} |
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|
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/** |
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* Update gateway-specific settings |
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* |
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* @param string $gateway Gateway name. |
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* @param array<string, mixed> $settings Gateway settings. |
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* @return bool True on success. |
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* @since 0.0.1 |
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*/ |
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public static function update_gateway_settings( $gateway, $settings ) { |
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$all_settings = self::get_all_payment_settings(); |
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$all_settings[ $gateway ] = $settings; |
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return self::update_all_payment_settings( $all_settings ); |
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} |
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|
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/** |
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* Get global payment setting |
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* |
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* @param string $key Setting key. |
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* @param mixed $default_value Default value. |
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* @return mixed Setting value. |
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* @since 0.0.1 |
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*/ |
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public static function get_global_setting( $key, $default_value = '' ) { |
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$all_settings = self::get_all_payment_settings(); |
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return $all_settings[ $key ] ?? $default_value; |
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} |
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|
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/** |
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* Update global payment setting |
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* |
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* @param string $key Setting key. |
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* @param mixed $value Setting value. |
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* @return bool True on success. |
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* @since 0.0.1 |
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*/ |
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public static function update_global_setting( $key, $value ) { |
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$all_settings = self::get_all_payment_settings(); |
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$all_settings[ $key ] = $value; |
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return self::update_all_payment_settings( $all_settings ); |
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} |
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|
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/** |
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* Get current payment mode |
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* |
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* @return string 'test' or 'live'. |
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* @since 0.0.1 |
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*/ |
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public static function get_payment_mode() { |
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$response = self::get_global_setting( 'payment_mode', 'test' ); |
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return ! empty( $response ) && is_string( $response ) ? $response : 'test'; |
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} |
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|
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/** |
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* Check the payment mode a donor's page was rendered in against the current one. |
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* |
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* The gateway configuration (the Stripe publishable key, the PayPal |
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* merchant) is resolved when the form is rendered, and a full-page cache |
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* stores that rendering, so a form can outlive a test/live switch. The |
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* client then holds one mode's key while the server would mint the other |
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* mode's intent, and the gateway rejects the confirmation with a message |
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* that helps nobody. Catching the mismatch here turns a silent failure into |
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* an actionable one, before any Stripe, PayPal or database work is done. |
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* |
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* A request that carries no mode passes: scripts that predate this check do |
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* not send one, and the pro subscription paths adopt it separately. |
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* |
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* @return true|WP_Error True when the modes agree or none was sent; WP_Error on a mismatch. |
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* @since 1.5.1 |
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*/ |
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public static function verify_submitted_payment_mode() { |
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// phpcs:ignore WordPress.Security.NonceVerification.Missing -- The nonce is verified by the calling endpoint before this runs. |
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$client_mode = isset( $_POST['payment_mode'] ) ? sanitize_key( wp_unslash( $_POST['payment_mode'] ) ) : ''; |
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|
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if ( '' === $client_mode ) { |
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return true; |
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} |
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|
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$current_mode = self::get_payment_mode(); |
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|
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if ( $client_mode === $current_mode ) { |
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return true; |
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} |
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|
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$message = __( 'This page was loaded with outdated payment settings. Please reload the page and try again.', 'suredonation' ); |
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|
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// Tell the site owner what actually happened: the donor's page is a |
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// cached copy from before the mode switch, and only a purge fixes it. |
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if ( current_user_can( 'manage_options' ) ) { |
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$message .= ' ' . sprintf( |
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/* translators: 1: payment mode the page was rendered in, 2: current payment mode. */ |
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__( 'Site owner: this page was cached in %1$s mode but payments now run in %2$s mode. Clear your page cache so visitors receive the updated form.', 'suredonation' ), |
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$client_mode, |
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$current_mode |
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); |
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} |
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|
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return new WP_Error( |
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'payment_mode_mismatch', |
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$message, |
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[ |
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'client_mode' => $client_mode, |
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'current_mode' => $current_mode, |
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] |
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); |
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} |
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|
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/** |
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* Gateway configuration the donation form needs at runtime. |
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* |
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* Resolved on request rather than at render time so a full-page cache |
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* cannot pin a form to the Stripe key, PayPal merchant or currency of |
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* whichever payment mode was current when the page was stored. Nothing |
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* here is secret: every value used to be written into the public markup. |
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* |
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* @param int $form_id Donation form post ID; selects the Stripe account the form charges to. |
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* @return array<string, mixed> Configuration keyed for the frontend script. |
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* @since 1.5.1 |
| 242 |
*/ |
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public static function get_frontend_gateway_config( $form_id ) { |
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$form_id = absint( $form_id ); |
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$mode = self::get_payment_mode(); |
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|
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// Only a published donation form selects a Stripe account or shapes the |
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// PayPal SDK arguments. The id is caller-supplied on a public endpoint, |
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// so anything else is treated as "no form": the filters below must never |
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// be handed an arbitrary post to inspect, and a form's account wiring |
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// is not readable by visitors before the form goes live. Users who can |
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// edit the form still get its configuration, which is what the block |
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// editor preview of a draft relies on. |
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if ( $form_id > 0 ) { |
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$is_form = Donation_Form::POST_TYPE === get_post_type( $form_id ); |
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$is_available = 'publish' === get_post_status( $form_id ) || current_user_can( 'edit_post', $form_id ); |
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|
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if ( ! $is_form || ! $is_available ) { |
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$form_id = 0; |
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} |
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} |
| 262 |
|
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$config = [ |
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'paymentMode' => $mode, |
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'currency' => self::get_currency(), |
| 266 |
'stripe' => null, |
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]; |
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|
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if ( Stripe_Helper::is_stripe_connected() ) { |
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$publishable_key = Stripe_Helper::get_stripe_publishable_key( $mode, Stripe_Helper::resolve_account_for_form( $form_id ) ); |
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if ( '' !== $publishable_key ) { |
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$config['stripe'] = [ 'publishableKey' => $publishable_key ]; |
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} |
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} |
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|
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/** |
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* Filter the gateway configuration served to the donation form at runtime. |
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* |
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* Gateways that register through filters (PayPal) add their own section |
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* here. Nothing in this array may be secret: it is served to anyone who |
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* can load the form. |
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* |
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* @param array<string, mixed> $config Configuration keyed for the frontend script. |
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* @param int $form_id Donation form post ID. |
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* @param string $mode Current payment mode, 'test' or 'live'. |
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* @since 1.5.1 |
| 287 |
*/ |
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return apply_filters( 'suredonation_frontend_gateway_config', $config, $form_id, $mode ); |
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} |
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|
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/** |
| 292 |
* Whether this site can create recurring donations. |
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* |
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* Subscription creation lives in the Pro add-on, so a form configured for |
| 295 |
* recurring (or for the donor's choice of both) can only offer it when Pro is |
| 296 |
* present. Single source of truth for that gate, so the editor, the rendered |
| 297 |
* markup and the submission paths cannot disagree. |
| 298 |
* |
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* @return bool |
| 300 |
* @since 1.5.1 |
| 301 |
*/ |
| 302 |
public static function is_recurring_available() { |
| 303 |
// The Stripe Elements group is now always built in mode: 'payment' |
| 304 |
// (never 'subscription' — see stripe.js init()), and confirming a |
| 305 |
// subscription requires pro to call elevateSetupFutureUsage() itself |
| 306 |
// before confirmPayment(). An older pro build still calls |
| 307 |
// confirmSetup() unconditionally, which is a hard Stripe integration |
| 308 |
// error against a mode: 'payment' Elements group. Gating on the |
| 309 |
// minimum compatible version — the same way presence is already |
| 310 |
// gated — keeps that combination from ever reaching a donor as |
| 311 |
// "recurring", falling back to the same safe one-time-only path an |
| 312 |
// absent Pro already takes. |
| 313 |
$pro_compatible = defined( 'SUREDONATION_PRO_VER' ) |
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&& self::pro_version_supports_recurring( SUREDONATION_PRO_VER ); |
| 315 |
|
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/** |
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* Filter whether recurring donations are available. |
| 318 |
* |
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* Only gates what is offered — the server still validates the submitted type |
| 320 |
* against the stored block configuration, and subscription creation still |
| 321 |
* requires the Pro add-on to be handling the request. |
| 322 |
* |
| 323 |
* @param bool $available Whether recurring donations can be offered. |
| 324 |
* @since 1.5.1 |
| 325 |
*/ |
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return (bool) apply_filters( 'suredonation_is_recurring_available', $pro_compatible ); |
| 327 |
} |
| 328 |
|
| 329 |
/** |
| 330 |
* Whether a given Pro version is new enough to confirm subscriptions against |
| 331 |
* the always-'payment'-mode Elements group (see is_recurring_available()). |
| 332 |
* |
| 333 |
* Split out from is_recurring_available() so the threshold itself is |
| 334 |
* testable without defining SUREDONATION_PRO_VER — a real constant, once |
| 335 |
* defined, cannot be undefined again for the rest of the test suite. |
| 336 |
* |
| 337 |
* @param string $version Pro plugin version string. |
| 338 |
* @return bool |
| 339 |
* @since 1.5.1 |
| 340 |
*/ |
| 341 |
public static function pro_version_supports_recurring( $version ) { |
| 342 |
return version_compare( $version, '1.1.1-beta', '>=' ); |
| 343 |
} |
| 344 |
|
| 345 |
/** |
| 346 |
* Get the admin URL for the SureDonation payment settings screen. |
| 347 |
* |
| 348 |
* Centralizes the (hash-routed) payment-settings URL so every "go to |
| 349 |
* payment settings" link across the plugin resolves to the same valid |
| 350 |
* location, rather than each caller hardcoding its own — and possibly |
| 351 |
* stale — path. |
| 352 |
* |
| 353 |
* Query args go in the real query string, before the `#`. The screen is |
| 354 |
* hash-routed, so anything appended after the fragment is invisible to |
| 355 |
* `window.location.search` and the React app would never see it. |
| 356 |
* |
| 357 |
* @param string $subpage Optional gateway subpage slug (e.g. 'stripe') to deep-link into. |
| 358 |
* @param array<string,string> $query_args Optional query args to carry to the screen (e.g. which notice sent the admin here). |
| 359 |
* @return string The admin payment-settings URL. |
| 360 |
* @since 1.3.0 |
| 361 |
*/ |
| 362 |
public static function get_settings_url( $subpage = '', $query_args = [] ) { |
| 363 |
$query = 'page=suredonation'; |
| 364 |
|
| 365 |
if ( is_array( $query_args ) && ! empty( $query_args ) ) { |
| 366 |
$query .= '&' . http_build_query( $query_args ); |
| 367 |
} |
| 368 |
|
| 369 |
$path = 'admin.php?' . $query . '#/settings?tab=payments'; |
| 370 |
if ( is_string( $subpage ) && '' !== $subpage ) { |
| 371 |
$path .= '&subpage=' . rawurlencode( $subpage ); |
| 372 |
} |
| 373 |
return admin_url( $path ); |
| 374 |
} |
| 375 |
|
| 376 |
/** |
| 377 |
* Whether any real payment gateway (Stripe or PayPal) is connected. |
| 378 |
* |
| 379 |
* Stripe's connection is mode-agnostic; PayPal's is per-mode, so both |
| 380 |
* PayPal modes are checked. Offline is intentionally excluded — it is a |
| 381 |
* manual method, not a live/test payment gateway, so it never counts as |
| 382 |
* "a gateway is connected" for test-mode/live-mode prompts. |
| 383 |
* |
| 384 |
* @return bool True when at least one gateway is connected in any mode. |
| 385 |
* @since 1.3.0 |
| 386 |
*/ |
| 387 |
public static function is_any_gateway_connected() { |
| 388 |
return Stripe_Helper::is_stripe_connected() |
| 389 |
|| PayPal_Helper::is_paypal_connected( 'live' ) |
| 390 |
|| PayPal_Helper::is_paypal_connected( 'test' ); |
| 391 |
} |
| 392 |
|
| 393 |
/** |
| 394 |
* Whether at least one payment gateway is usable on the site right now — a |
| 395 |
* gateway a payment block would actually render if it selected it. |
| 396 |
* |
| 397 |
* Stricter than is_any_gateway_connected(): it is scoped to the current |
| 398 |
* mode. Stripe must also have a publishable key for the current mode, PayPal |
| 399 |
* must be connected for the current mode, and Offline must be enabled. Used |
| 400 |
* to decide whether a "no gateway available" state is a missing site-wide |
| 401 |
* gateway (nothing usable) or merely a form/block that hasn't selected an |
| 402 |
* already-usable gateway. |
| 403 |
* |
| 404 |
* @return bool |
| 405 |
* @since 1.3.0 |
| 406 |
*/ |
| 407 |
public static function has_usable_gateway() { |
| 408 |
// Connected is not the same as able to take money: an account Stripe has |
| 409 |
// restricted still holds valid keys. Counting it as usable sends the |
| 410 |
// admin to the form editor to "pick a gateway" when the gateway itself |
| 411 |
// is the problem. |
| 412 |
if ( Stripe_Helper::is_stripe_connected() |
| 413 |
&& '' !== Stripe_Helper::get_stripe_publishable_key() |
| 414 |
&& ! Stripe_Helper::is_card_capability_blocked() ) { |
| 415 |
return true; |
| 416 |
} |
| 417 |
|
| 418 |
if ( PayPal_Helper::is_paypal_connected() ) { |
| 419 |
return true; |
| 420 |
} |
| 421 |
|
| 422 |
return Offline_Helper::is_offline_enabled(); |
| 423 |
} |
| 424 |
|
| 425 |
/** |
| 426 |
* Get the currency list formatted for select inputs. |
| 427 |
* |
| 428 |
* Returns a map of currency code to a "CODE - Name" display label, shared |
| 429 |
* by the REST currencies endpoint and the admin bootstrap data so the |
| 430 |
* Select renders synchronously without an extra fetch. |
| 431 |
* |
| 432 |
* @return array<string, string> Map of currency code to display label. |
| 433 |
* @since 1.1.0 |
| 434 |
*/ |
| 435 |
public static function get_currencies_list() { |
| 436 |
$currencies = []; |
| 437 |
foreach ( self::get_all_currencies_data() as $code => $data ) { |
| 438 |
$currencies[ $code ] = $code . ' - ' . $data['name']; |
| 439 |
} |
| 440 |
return $currencies; |
| 441 |
} |
| 442 |
|
| 443 |
/** |
| 444 |
* Get comprehensive currency data for all supported currencies. |
| 445 |
* |
| 446 |
* This is the single source of truth for all currency-related data. |
| 447 |
* Contains currency name, symbol, and decimal places. |
| 448 |
* |
| 449 |
* @return array<string, array<string, mixed>> Array of currency data keyed by currency code. |
| 450 |
* @since 0.0.1 |
| 451 |
*/ |
| 452 |
public static function get_all_currencies_data() { |
| 453 |
return [ |
| 454 |
'USD' => [ |
| 455 |
'name' => __( 'US Dollar', 'suredonation' ), |
| 456 |
'symbol' => '$', |
| 457 |
'decimal_places' => 2, |
| 458 |
], |
| 459 |
'EUR' => [ |
| 460 |
'name' => __( 'Euro', 'suredonation' ), |
| 461 |
'symbol' => '€', |
| 462 |
'decimal_places' => 2, |
| 463 |
], |
| 464 |
'GBP' => [ |
| 465 |
'name' => __( 'British Pound', 'suredonation' ), |
| 466 |
'symbol' => '£', |
| 467 |
'decimal_places' => 2, |
| 468 |
], |
| 469 |
'JPY' => [ |
| 470 |
'name' => __( 'Japanese Yen', 'suredonation' ), |
| 471 |
'symbol' => '¥', |
| 472 |
'decimal_places' => 0, |
| 473 |
], |
| 474 |
'AUD' => [ |
| 475 |
'name' => __( 'Australian Dollar', 'suredonation' ), |
| 476 |
'symbol' => 'A$', |
| 477 |
'decimal_places' => 2, |
| 478 |
], |
| 479 |
'CAD' => [ |
| 480 |
'name' => __( 'Canadian Dollar', 'suredonation' ), |
| 481 |
'symbol' => 'C$', |
| 482 |
'decimal_places' => 2, |
| 483 |
], |
| 484 |
'CHF' => [ |
| 485 |
'name' => __( 'Swiss Franc', 'suredonation' ), |
| 486 |
'symbol' => 'CHF', |
| 487 |
'decimal_places' => 2, |
| 488 |
], |
| 489 |
'CNY' => [ |
| 490 |
'name' => __( 'Chinese Yuan', 'suredonation' ), |
| 491 |
'symbol' => '¥', |
| 492 |
'decimal_places' => 2, |
| 493 |
], |
| 494 |
'SEK' => [ |
| 495 |
'name' => __( 'Swedish Krona', 'suredonation' ), |
| 496 |
'symbol' => 'kr', |
| 497 |
'decimal_places' => 2, |
| 498 |
], |
| 499 |
'NZD' => [ |
| 500 |
'name' => __( 'New Zealand Dollar', 'suredonation' ), |
| 501 |
'symbol' => 'NZ$', |
| 502 |
'decimal_places' => 2, |
| 503 |
], |
| 504 |
'MXN' => [ |
| 505 |
'name' => __( 'Mexican Peso', 'suredonation' ), |
| 506 |
'symbol' => 'MX$', |
| 507 |
'decimal_places' => 2, |
| 508 |
], |
| 509 |
'SGD' => [ |
| 510 |
'name' => __( 'Singapore Dollar', 'suredonation' ), |
| 511 |
'symbol' => 'S$', |
| 512 |
'decimal_places' => 2, |
| 513 |
], |
| 514 |
'HKD' => [ |
| 515 |
'name' => __( 'Hong Kong Dollar', 'suredonation' ), |
| 516 |
'symbol' => 'HK$', |
| 517 |
'decimal_places' => 2, |
| 518 |
], |
| 519 |
'NOK' => [ |
| 520 |
'name' => __( 'Norwegian Krone', 'suredonation' ), |
| 521 |
'symbol' => 'kr', |
| 522 |
'decimal_places' => 2, |
| 523 |
], |
| 524 |
'KRW' => [ |
| 525 |
'name' => __( 'South Korean Won', 'suredonation' ), |
| 526 |
'symbol' => '₩', |
| 527 |
'decimal_places' => 0, |
| 528 |
], |
| 529 |
'TRY' => [ |
| 530 |
'name' => __( 'Turkish Lira', 'suredonation' ), |
| 531 |
'symbol' => '₺', |
| 532 |
'decimal_places' => 2, |
| 533 |
], |
| 534 |
'RUB' => [ |
| 535 |
'name' => __( 'Russian Ruble', 'suredonation' ), |
| 536 |
'symbol' => '₽', |
| 537 |
'decimal_places' => 2, |
| 538 |
], |
| 539 |
'INR' => [ |
| 540 |
'name' => __( 'Indian Rupee', 'suredonation' ), |
| 541 |
'symbol' => '₹', |
| 542 |
'decimal_places' => 2, |
| 543 |
], |
| 544 |
'BRL' => [ |
| 545 |
'name' => __( 'Brazilian Real', 'suredonation' ), |
| 546 |
'symbol' => 'R$', |
| 547 |
'decimal_places' => 2, |
| 548 |
], |
| 549 |
'ZAR' => [ |
| 550 |
'name' => __( 'South African Rand', 'suredonation' ), |
| 551 |
'symbol' => 'R', |
| 552 |
'decimal_places' => 2, |
| 553 |
], |
| 554 |
'AED' => [ |
| 555 |
'name' => __( 'UAE Dirham', 'suredonation' ), |
| 556 |
'symbol' => 'د.إ', |
| 557 |
'decimal_places' => 2, |
| 558 |
], |
| 559 |
'PHP' => [ |
| 560 |
'name' => __( 'Philippine Peso', 'suredonation' ), |
| 561 |
'symbol' => '₱', |
| 562 |
'decimal_places' => 2, |
| 563 |
], |
| 564 |
'IDR' => [ |
| 565 |
'name' => __( 'Indonesian Rupiah', 'suredonation' ), |
| 566 |
'symbol' => 'Rp', |
| 567 |
'decimal_places' => 2, |
| 568 |
], |
| 569 |
'MYR' => [ |
| 570 |
'name' => __( 'Malaysian Ringgit', 'suredonation' ), |
| 571 |
'symbol' => 'RM', |
| 572 |
'decimal_places' => 2, |
| 573 |
], |
| 574 |
'THB' => [ |
| 575 |
'name' => __( 'Thai Baht', 'suredonation' ), |
| 576 |
'symbol' => '฿', |
| 577 |
'decimal_places' => 2, |
| 578 |
], |
| 579 |
'BIF' => [ |
| 580 |
'name' => __( 'Burundian Franc', 'suredonation' ), |
| 581 |
'symbol' => 'FBu', |
| 582 |
'decimal_places' => 0, |
| 583 |
], |
| 584 |
'CLP' => [ |
| 585 |
'name' => __( 'Chilean Peso', 'suredonation' ), |
| 586 |
'symbol' => '$', |
| 587 |
'decimal_places' => 0, |
| 588 |
], |
| 589 |
'DJF' => [ |
| 590 |
'name' => __( 'Djiboutian Franc', 'suredonation' ), |
| 591 |
'symbol' => 'Fdj', |
| 592 |
'decimal_places' => 0, |
| 593 |
], |
| 594 |
'GNF' => [ |
| 595 |
'name' => __( 'Guinean Franc', 'suredonation' ), |
| 596 |
'symbol' => 'FG', |
| 597 |
'decimal_places' => 0, |
| 598 |
], |
| 599 |
'KMF' => [ |
| 600 |
'name' => __( 'Comorian Franc', 'suredonation' ), |
| 601 |
'symbol' => 'CF', |
| 602 |
'decimal_places' => 0, |
| 603 |
], |
| 604 |
'MGA' => [ |
| 605 |
'name' => __( 'Malagasy Ariary', 'suredonation' ), |
| 606 |
'symbol' => 'Ar', |
| 607 |
'decimal_places' => 0, |
| 608 |
], |
| 609 |
'PYG' => [ |
| 610 |
'name' => __( 'Paraguayan Guaraní', 'suredonation' ), |
| 611 |
'symbol' => '₲', |
| 612 |
'decimal_places' => 0, |
| 613 |
], |
| 614 |
'RWF' => [ |
| 615 |
'name' => __( 'Rwandan Franc', 'suredonation' ), |
| 616 |
'symbol' => 'FRw', |
| 617 |
'decimal_places' => 0, |
| 618 |
], |
| 619 |
'UGX' => [ |
| 620 |
'name' => __( 'Ugandan Shilling', 'suredonation' ), |
| 621 |
'symbol' => 'USh', |
| 622 |
'decimal_places' => 0, |
| 623 |
], |
| 624 |
'VND' => [ |
| 625 |
'name' => __( 'Vietnamese Đồng', 'suredonation' ), |
| 626 |
'symbol' => '₫', |
| 627 |
'decimal_places' => 0, |
| 628 |
], |
| 629 |
'VUV' => [ |
| 630 |
'name' => __( 'Vanuatu Vatu', 'suredonation' ), |
| 631 |
'symbol' => 'VT', |
| 632 |
'decimal_places' => 0, |
| 633 |
], |
| 634 |
'XAF' => [ |
| 635 |
'name' => __( 'Central African CFA Franc', 'suredonation' ), |
| 636 |
'symbol' => 'FCFA', |
| 637 |
'decimal_places' => 0, |
| 638 |
], |
| 639 |
'XOF' => [ |
| 640 |
'name' => __( 'West African CFA Franc', 'suredonation' ), |
| 641 |
'symbol' => 'CFA', |
| 642 |
'decimal_places' => 0, |
| 643 |
], |
| 644 |
'XPF' => [ |
| 645 |
'name' => __( 'CFP Franc', 'suredonation' ), |
| 646 |
'symbol' => '₣', |
| 647 |
'decimal_places' => 0, |
| 648 |
], |
| 649 |
]; |
| 650 |
} |
| 651 |
|
| 652 |
/** |
| 653 |
* Get currency names for all supported currencies. |
| 654 |
* |
| 655 |
* @return array<string, mixed> Array of currency names keyed by currency code. |
| 656 |
* @since 0.0.1 |
| 657 |
*/ |
| 658 |
public static function get_currency_names() { |
| 659 |
$currencies = self::get_all_currencies_data(); |
| 660 |
$names = []; |
| 661 |
|
| 662 |
foreach ( $currencies as $code => $data ) { |
| 663 |
$names[ $code ] = $data['name']; |
| 664 |
} |
| 665 |
|
| 666 |
return $names; |
| 667 |
} |
| 668 |
|
| 669 |
/** |
| 670 |
* Get currency |
| 671 |
* |
| 672 |
* @return string Currency code (e.g., 'USD'). |
| 673 |
* @since 0.0.1 |
| 674 |
*/ |
| 675 |
public static function get_currency() { |
| 676 |
$currency = self::get_global_setting( 'currency', 'USD' ); |
| 677 |
return is_string( $currency ) ? $currency : 'USD'; |
| 678 |
} |
| 679 |
|
| 680 |
/** |
| 681 |
* Get currency symbol. |
| 682 |
* |
| 683 |
* @param string $currency Currency code. |
| 684 |
* @return string Currency symbol or empty string. |
| 685 |
* @since 0.0.1 |
| 686 |
*/ |
| 687 |
public static function get_currency_symbol( $currency = '' ) { |
| 688 |
if ( empty( $currency ) ) { |
| 689 |
$currency = self::get_currency(); |
| 690 |
} |
| 691 |
|
| 692 |
if ( empty( $currency ) || ! is_string( $currency ) ) { |
| 693 |
return ''; |
| 694 |
} |
| 695 |
|
| 696 |
$currency = strtoupper( $currency ); |
| 697 |
$currencies = self::get_all_currencies_data(); |
| 698 |
$currency_data = $currencies[ $currency ] ?? null; |
| 699 |
|
| 700 |
$symbol = ! empty( $currency_data ) ? $currency_data['symbol'] : ''; |
| 701 |
return is_string( $symbol ) ? $symbol : ''; |
| 702 |
} |
| 703 |
|
| 704 |
/** |
| 705 |
* Get list of zero-decimal currencies. |
| 706 |
* |
| 707 |
* Zero-decimal currencies don't use decimal points in payment APIs. |
| 708 |
* For these currencies, amounts are passed as-is without multiplying/dividing by 100. |
| 709 |
* |
| 710 |
* @return array<string> Array of zero-decimal currency codes. |
| 711 |
* @since 0.0.1 |
| 712 |
*/ |
| 713 |
public static function get_zero_decimal_currencies() { |
| 714 |
$currencies = self::get_all_currencies_data(); |
| 715 |
$zero_decimal_codes = []; |
| 716 |
|
| 717 |
foreach ( $currencies as $code => $data ) { |
| 718 |
if ( 0 === $data['decimal_places'] ) { |
| 719 |
$zero_decimal_codes[] = $code; |
| 720 |
} |
| 721 |
} |
| 722 |
|
| 723 |
return $zero_decimal_codes; |
| 724 |
} |
| 725 |
|
| 726 |
/** |
| 727 |
* Check if currency is zero-decimal. |
| 728 |
* |
| 729 |
* @param string $currency Currency code. |
| 730 |
* @return bool True if zero-decimal currency. |
| 731 |
* @since 0.0.1 |
| 732 |
*/ |
| 733 |
public static function is_zero_decimal_currency( $currency ) { |
| 734 |
if ( empty( $currency ) || ! is_string( $currency ) ) { |
| 735 |
return false; |
| 736 |
} |
| 737 |
|
| 738 |
$currency = strtoupper( $currency ); |
| 739 |
$currencies = self::get_all_currencies_data(); |
| 740 |
$currency_data = $currencies[ $currency ] ?? null; |
| 741 |
|
| 742 |
return $currency_data && 0 === $currency_data['decimal_places']; |
| 743 |
} |
| 744 |
|
| 745 |
/** |
| 746 |
* Get the comparison tolerance (epsilon) for a currency, in major units. |
| 747 |
* |
| 748 |
* Amount comparisons need a small tolerance to absorb floating-point |
| 749 |
* rounding. The correct tolerance is one minor unit of the currency: |
| 750 |
* 0.01 for 2-decimal currencies (e.g. USD) and 1 for zero-decimal |
| 751 |
* currencies (e.g. JPY) — rather than a hardcoded 0.01, which is |
| 752 |
* meaningless for zero-decimal currencies. |
| 753 |
* |
| 754 |
* @param string $currency Currency code. Defaults to the configured currency. |
| 755 |
* @return float Tolerance in major currency units. |
| 756 |
* @since 1.1.1 |
| 757 |
*/ |
| 758 |
public static function get_amount_epsilon( $currency = '' ) { |
| 759 |
if ( empty( $currency ) ) { |
| 760 |
$currency = self::get_currency(); |
| 761 |
} |
| 762 |
|
| 763 |
$currency = is_string( $currency ) ? strtoupper( $currency ) : ''; |
| 764 |
$currencies = self::get_all_currencies_data(); |
| 765 |
$currency_data = $currencies[ $currency ] ?? null; |
| 766 |
|
| 767 |
$decimal_places = ( is_array( $currency_data ) && isset( $currency_data['decimal_places'] ) && is_numeric( $currency_data['decimal_places'] ) ) |
| 768 |
? (int) $currency_data['decimal_places'] |
| 769 |
: 2; |
| 770 |
|
| 771 |
return (float) pow( 10, -$decimal_places ); |
| 772 |
} |
| 773 |
|
| 774 |
/** |
| 775 |
* Format amount for display |
| 776 |
* |
| 777 |
* @param float $amount Amount. |
| 778 |
* @param string $currency Currency code. |
| 779 |
* @return string Formatted amount. |
| 780 |
* @since 0.0.1 |
| 781 |
*/ |
| 782 |
public static function format_amount( $amount, $currency = '' ) { |
| 783 |
if ( empty( $currency ) ) { |
| 784 |
$currency = self::get_currency(); |
| 785 |
} |
| 786 |
|
| 787 |
$symbol = self::get_currency_symbol( $currency ); |
| 788 |
$decimal_places = self::is_zero_decimal_currency( $currency ) ? 0 : 2; |
| 789 |
$formatted = number_format( (float) $amount, $decimal_places, '.', ',' ); |
| 790 |
|
| 791 |
// Fall back to the uppercased currency code when we have no symbol for |
| 792 |
// this currency (e.g. a historical/imported donation in a currency not |
| 793 |
// in our list). Positioning a multi-letter code isn't meaningful, so |
| 794 |
// keep the legacy "CODE 100.00" form rather than routing an empty |
| 795 |
// symbol through the switch (which would emit a bare number and stray |
| 796 |
// spaces under the *_space positions). |
| 797 |
if ( '' === $symbol ) { |
| 798 |
$code = strtoupper( (string) $currency ); |
| 799 |
return '' === $code ? $formatted : $code . ' ' . $formatted; |
| 800 |
} |
| 801 |
|
| 802 |
return self::position_currency_symbol( $symbol, $formatted ); |
| 803 |
} |
| 804 |
|
| 805 |
/** |
| 806 |
* Place a currency symbol relative to an already-formatted amount per the |
| 807 |
* global sign position setting. Kept separate from format_amount() so |
| 808 |
* callers that format the number themselves (e.g. raw preset labels that |
| 809 |
* must not gain decimals) can still honor the setting. |
| 810 |
* |
| 811 |
* 'auto' (and the historical 'left') keep the symbol on the left, so |
| 812 |
* existing output is unchanged. |
| 813 |
* |
| 814 |
* @param string $symbol Currency symbol. |
| 815 |
* @param string $formatted_amount Amount already formatted for display. |
| 816 |
* @return string Amount with the symbol positioned per the setting. |
| 817 |
* @since 1.3.0 |
| 818 |
*/ |
| 819 |
public static function position_currency_symbol( $symbol, $formatted_amount ) { |
| 820 |
switch ( self::get_currency_sign_position() ) { |
| 821 |
case 'right': |
| 822 |
return $formatted_amount . $symbol; |
| 823 |
case 'left_space': |
| 824 |
return $symbol . ' ' . $formatted_amount; |
| 825 |
case 'right_space': |
| 826 |
return $formatted_amount . ' ' . $symbol; |
| 827 |
case 'left': |
| 828 |
case 'auto': |
| 829 |
default: |
| 830 |
return $symbol . $formatted_amount; |
| 831 |
} |
| 832 |
} |
| 833 |
|
| 834 |
/** |
| 835 |
* Get the configured currency sign position. |
| 836 |
* |
| 837 |
* Controls where the currency symbol sits relative to the amount in |
| 838 |
* displayed values. 'auto' preserves the historical behavior (symbol on |
| 839 |
* the left for server-rendered donor-facing output; locale-aware in the |
| 840 |
* admin dashboard, which formats via Intl). An explicit value overrides |
| 841 |
* this consistently across every surface. |
| 842 |
* |
| 843 |
* @return string One of 'auto', 'left', 'right', 'left_space', 'right_space'. |
| 844 |
* @since 1.3.0 |
| 845 |
*/ |
| 846 |
public static function get_currency_sign_position() { |
| 847 |
$position = self::get_global_setting( 'currency_sign_position', 'auto' ); |
| 848 |
|
| 849 |
return is_string( $position ) && in_array( $position, self::ALLOWED_SIGN_POSITIONS, true ) ? $position : 'auto'; |
| 850 |
} |
| 851 |
|
| 852 |
/** |
| 853 |
* Convert amount to Stripe format (cents) |
| 854 |
* |
| 855 |
* @param float $amount Amount in dollars. |
| 856 |
* @param string $currency Currency code. |
| 857 |
* @return int Amount in cents. |
| 858 |
* @since 0.0.1 |
| 859 |
*/ |
| 860 |
public static function amount_to_stripe_format( $amount, $currency = '' ) { |
| 861 |
if ( empty( $currency ) ) { |
| 862 |
$currency = self::get_currency(); |
| 863 |
} |
| 864 |
|
| 865 |
$amount = floatval( $amount ); |
| 866 |
return self::is_zero_decimal_currency( $currency ) |
| 867 |
? (int) round( $amount ) |
| 868 |
: (int) round( $amount * 100 ); |
| 869 |
} |
| 870 |
|
| 871 |
/** |
| 872 |
* Convert amount from Stripe format (cents) to dollars |
| 873 |
* |
| 874 |
* @param int $amount Amount in cents. |
| 875 |
* @param string $currency Currency code. |
| 876 |
* @return float Amount in dollars. |
| 877 |
* @since 0.0.1 |
| 878 |
*/ |
| 879 |
public static function amount_from_stripe_format( $amount, $currency = '' ) { |
| 880 |
if ( empty( $currency ) ) { |
| 881 |
$currency = self::get_currency(); |
| 882 |
} |
| 883 |
|
| 884 |
$amount = floatval( $amount ); |
| 885 |
return self::is_zero_decimal_currency( $currency ) |
| 886 |
? $amount |
| 887 |
: $amount / 100; |
| 888 |
} |
| 889 |
|
| 890 |
/** |
| 891 |
* Get fee recovery settings from global payment settings. |
| 892 |
* |
| 893 |
* @return array<string, mixed> Fee recovery settings. |
| 894 |
* @since 1.0.0 |
| 895 |
*/ |
| 896 |
public static function get_fee_recovery_settings() { |
| 897 |
$all_settings = self::get_all_payment_settings(); |
| 898 |
$fee_recovery = isset( $all_settings['fee_recovery'] ) && is_array( $all_settings['fee_recovery'] ) |
| 899 |
? $all_settings['fee_recovery'] |
| 900 |
: []; |
| 901 |
|
| 902 |
$defaults = [ |
| 903 |
'fee_percentage' => 2.9, |
| 904 |
'fee_fixed' => 0.30, |
| 905 |
'fee_mode' => 'all_gateways', |
| 906 |
'gateways' => [ |
| 907 |
'stripe' => [ |
| 908 |
'fee_percentage' => 2.9, |
| 909 |
'fee_fixed' => 0.30, |
| 910 |
'enabled' => true, |
| 911 |
], |
| 912 |
'paypal' => [ |
| 913 |
'fee_percentage' => 3.49, |
| 914 |
'fee_fixed' => 0.49, |
| 915 |
'enabled' => true, |
| 916 |
], |
| 917 |
'offline' => [ |
| 918 |
'fee_percentage' => 0, |
| 919 |
'fee_fixed' => 0, |
| 920 |
'enabled' => false, |
| 921 |
], |
| 922 |
], |
| 923 |
]; |
| 924 |
|
| 925 |
return wp_parse_args( $fee_recovery, $defaults ); |
| 926 |
} |
| 927 |
|
| 928 |
/** |
| 929 |
* Get fee rates for a specific gateway. |
| 930 |
* |
| 931 |
* In 'per_gateway' mode, returns the gateway-specific rates (or zeros if disabled). |
| 932 |
* In 'all_gateways' mode, returns the single global rate. |
| 933 |
* |
| 934 |
* @param string $gateway Gateway identifier (e.g., 'stripe', 'offline'). |
| 935 |
* @param array<string,mixed> $fee_recovery Optional pre-fetched fee recovery settings. |
| 936 |
* @return array{fee_percentage: float, fee_fixed: float} Fee rates for the gateway. |
| 937 |
* @since 1.0.0 |
| 938 |
*/ |
| 939 |
public static function get_fee_rates_for_gateway( $gateway, $fee_recovery = null ) { |
| 940 |
if ( null === $fee_recovery ) { |
| 941 |
$fee_recovery = self::get_fee_recovery_settings(); |
| 942 |
} |
| 943 |
|
| 944 |
$mode = $fee_recovery['fee_mode'] ?? 'all_gateways'; |
| 945 |
|
| 946 |
$gateways = is_array( $fee_recovery['gateways'] ?? null ) ? $fee_recovery['gateways'] : []; |
| 947 |
if ( 'per_gateway' === $mode && isset( $gateways[ $gateway ] ) ) { |
| 948 |
$gw = is_array( $gateways[ $gateway ] ) ? $gateways[ $gateway ] : []; |
| 949 |
|
| 950 |
if ( ! ( $gw['enabled'] ?? true ) ) { |
| 951 |
return [ |
| 952 |
'fee_percentage' => 0, |
| 953 |
'fee_fixed' => 0, |
| 954 |
]; |
| 955 |
} |
| 956 |
|
| 957 |
return [ |
| 958 |
'fee_percentage' => (float) ( $gw['fee_percentage'] ?? 0 ), |
| 959 |
'fee_fixed' => (float) ( $gw['fee_fixed'] ?? 0 ), |
| 960 |
]; |
| 961 |
} |
| 962 |
|
| 963 |
// All-gateways mode — return the single rate. |
| 964 |
$pct = $fee_recovery['fee_percentage'] ?? 2.9; |
| 965 |
$fixed = $fee_recovery['fee_fixed'] ?? 0.30; |
| 966 |
return [ |
| 967 |
'fee_percentage' => is_numeric( $pct ) ? (float) $pct : 2.9, |
| 968 |
'fee_fixed' => is_numeric( $fixed ) ? (float) $fixed : 0.30, |
| 969 |
]; |
| 970 |
} |
| 971 |
|
| 972 |
/** |
| 973 |
* Get cover-fees configuration for a specific gateway from block config, with global fallback. |
| 974 |
* |
| 975 |
* Looks up the suredonation/cover-fees block in the form's block config to extract per-gateway or |
| 976 |
* global fee rates. Falls back to global payment settings if block config is unavailable. |
| 977 |
* |
| 978 |
* @param int $form_id Form post ID. |
| 979 |
* @param string $gateway Gateway identifier (e.g., 'stripe', 'offline'). |
| 980 |
* @return array{enabled: bool, fee_percentage: float, fee_fixed: float} Fee config for the gateway. |
| 981 |
* @since 1.0.0 |
| 982 |
*/ |
| 983 |
public static function get_cover_fees_config( $form_id, $gateway ) { |
| 984 |
$fee_percentage = null; |
| 985 |
$fee_fixed = null; |
| 986 |
$enabled = true; |
| 987 |
|
| 988 |
// Look up cover-fees block config for the form. |
| 989 |
if ( $form_id > 0 ) { |
| 990 |
$block_config = \SureDonation\Inc\Field_Validation::get_or_migrate_block_config_for_legacy_form( $form_id ); |
| 991 |
if ( ! empty( $block_config ) && is_array( $block_config ) ) { |
| 992 |
foreach ( $block_config as $config ) { |
| 993 |
if ( ! is_array( $config ) || ! isset( $config['block_name'] ) || 'suredonation/cover-fees' !== $config['block_name'] ) { |
| 994 |
continue; |
| 995 |
} |
| 996 |
|
| 997 |
$block_fee_mode = $config['fee_mode'] ?? 'all_gateways'; |
| 998 |
$gateway_fees = is_array( $config['gateway_fees'] ?? null ) ? $config['gateway_fees'] : []; |
| 999 |
|
| 1000 |
if ( 'per_gateway' === $block_fee_mode && ! empty( $gateway_fees[ $gateway ] ) ) { |
| 1001 |
$gw = is_array( $gateway_fees[ $gateway ] ) ? $gateway_fees[ $gateway ] : []; |
| 1002 |
if ( empty( $gw['enabled'] ) ) { |
| 1003 |
$enabled = false; |
| 1004 |
} else { |
| 1005 |
$fee_percentage = (float) ( $gw['fee_percentage'] ?? 0 ); |
| 1006 |
$fee_fixed = (float) ( $gw['fee_fixed'] ?? 0 ); |
| 1007 |
} |
| 1008 |
} else { |
| 1009 |
$fee_percentage = is_numeric( $config['fee_percentage'] ?? null ) ? (float) $config['fee_percentage'] : null; |
| 1010 |
$fee_fixed = is_numeric( $config['fee_fixed'] ?? null ) ? (float) $config['fee_fixed'] : null; |
| 1011 |
} |
| 1012 |
break; |
| 1013 |
} |
| 1014 |
} |
| 1015 |
} |
| 1016 |
|
| 1017 |
// Fall back to global gateway-specific settings. |
| 1018 |
if ( $enabled && ( null === $fee_percentage || null === $fee_fixed ) ) { |
| 1019 |
$rates = self::get_fee_rates_for_gateway( $gateway ); |
| 1020 |
$fee_percentage = null === $fee_percentage ? (float) $rates['fee_percentage'] : $fee_percentage; |
| 1021 |
$fee_fixed = null === $fee_fixed ? (float) $rates['fee_fixed'] : $fee_fixed; |
| 1022 |
} |
| 1023 |
|
| 1024 |
return [ |
| 1025 |
'enabled' => $enabled, |
| 1026 |
'fee_percentage' => $fee_percentage ?? 0.0, |
| 1027 |
'fee_fixed' => $fee_fixed ?? 0.0, |
| 1028 |
]; |
| 1029 |
} |
| 1030 |
|
| 1031 |
/** |
| 1032 |
* Calculate fee using the inclusive (gross-up) formula. |
| 1033 |
* |
| 1034 |
* Formula: total = (base + fixed) / (1 - rate), fee = total - base |
| 1035 |
* This ensures the organization receives exactly the base amount after the gateway takes its cut. |
| 1036 |
* |
| 1037 |
* @param float $base_amount The base donation amount. |
| 1038 |
* @param float|null $fee_percentage Fee percentage (e.g., 2.9 for 2.9%). Null to use global setting. |
| 1039 |
* @param float|null $fee_fixed Fixed fee amount (e.g., 0.30). Null to use global setting. |
| 1040 |
* @return float The calculated fee amount, rounded to 2 decimal places. |
| 1041 |
* @since 1.0.0 |
| 1042 |
*/ |
| 1043 |
public static function calculate_fee( $base_amount, $fee_percentage = null, $fee_fixed = null ) { |
| 1044 |
if ( $base_amount <= 0 ) { |
| 1045 |
return 0.0; |
| 1046 |
} |
| 1047 |
|
| 1048 |
if ( null === $fee_percentage || null === $fee_fixed ) { |
| 1049 |
$settings = self::get_fee_recovery_settings(); |
| 1050 |
if ( null === $fee_percentage ) { |
| 1051 |
$pct = $settings['fee_percentage'] ?? 2.9; |
| 1052 |
$fee_percentage = is_numeric( $pct ) ? (float) $pct : 2.9; |
| 1053 |
} |
| 1054 |
if ( null === $fee_fixed ) { |
| 1055 |
$fixed = $settings['fee_fixed'] ?? 0.30; |
| 1056 |
$fee_fixed = is_numeric( $fixed ) ? (float) $fixed : 0.30; |
| 1057 |
} |
| 1058 |
} |
| 1059 |
|
| 1060 |
$rate = (float) $fee_percentage / 100; |
| 1061 |
|
| 1062 |
// Prevent division by zero. |
| 1063 |
if ( $rate >= 1 ) { |
| 1064 |
return 0.0; |
| 1065 |
} |
| 1066 |
|
| 1067 |
$total = ( $base_amount + (float) $fee_fixed ) / ( 1 - $rate ); |
| 1068 |
$fee = $total - $base_amount; |
| 1069 |
|
| 1070 |
return round( $fee, 2 ); |
| 1071 |
} |
| 1072 |
|
| 1073 |
/** |
| 1074 |
* Get supported payment gateways |
| 1075 |
* |
| 1076 |
* @return array<string, array<string, mixed>> Gateway configurations. |
| 1077 |
* @since 0.0.1 |
| 1078 |
*/ |
| 1079 |
public static function get_supported_gateways() { |
| 1080 |
return apply_filters( |
| 1081 |
'suredonation_payment_gateways', |
| 1082 |
[ |
| 1083 |
'stripe' => [ |
| 1084 |
'label' => __( 'Stripe', 'suredonation' ), |
| 1085 |
'description' => __( 'Accept payments via Stripe', 'suredonation' ), |
| 1086 |
'enabled' => true, |
| 1087 |
'supports_recurring' => true, |
| 1088 |
], |
| 1089 |
'offline' => [ |
| 1090 |
'label' => __( 'Offline Donations', 'suredonation' ), |
| 1091 |
'description' => __( 'Accept offline donations', 'suredonation' ), |
| 1092 |
'enabled' => true, |
| 1093 |
'supports_recurring' => false, |
| 1094 |
], |
| 1095 |
] |
| 1096 |
); |
| 1097 |
} |
| 1098 |
|
| 1099 |
/** |
| 1100 |
* Check if a gateway is enabled |
| 1101 |
* |
| 1102 |
* @param string $gateway Gateway name. |
| 1103 |
* @return bool True if enabled. |
| 1104 |
* @since 0.0.1 |
| 1105 |
*/ |
| 1106 |
public static function is_gateway_enabled( $gateway ) { |
| 1107 |
$gateways = self::get_supported_gateways(); |
| 1108 |
return ! empty( $gateways[ $gateway ]['enabled'] ); |
| 1109 |
} |
| 1110 |
|
| 1111 |
/** |
| 1112 |
* Validate payment amount against stored form configuration. |
| 1113 |
* |
| 1114 |
* This function verifies that the payment amount submitted matches the |
| 1115 |
* configured values in the form's payment block settings stored in post meta. |
| 1116 |
* It handles both fixed and variable (minimum) amount validations. |
| 1117 |
* |
| 1118 |
* This is the PRIMARY security function that prevents payment amount manipulation. |
| 1119 |
* It validates against IMMUTABLE configuration stored when the form was saved, |
| 1120 |
* not against request data which can be manipulated. |
| 1121 |
* |
| 1122 |
* @since 0.0.1 |
| 1123 |
* @param float $amount Amount in major currency units (e.g., dollars, not cents). |
| 1124 |
* @param string $currency Currency code (e.g., 'USD', 'EUR'). |
| 1125 |
* @param int $form_id WordPress post ID of the donation form. |
| 1126 |
* @param string $block_id Block identifier for the payment block. |
| 1127 |
* @param string $gateway Payment gateway identifier (default 'stripe'). |
| 1128 |
* @param string $payment_type Payment type the caller is processing ('one-time' or |
| 1129 |
* 'subscription'). Only consulted for blocks configured |
| 1130 |
* as 'both', where each choice has its own amount config. |
| 1131 |
* @return array<mixed> Validation result. |
| 1132 |
*/ |
| 1133 |
public static function validate_payment_amount( $amount, $currency, $form_id, $block_id, $gateway = 'stripe', $payment_type = '' ) { |
| 1134 |
// Retrieve block configuration from post meta. |
| 1135 |
$block_config = \SureDonation\Inc\Field_Validation::get_or_migrate_block_config_for_legacy_form( $form_id ); |
| 1136 |
|
| 1137 |
// Check if block config exists. |
| 1138 |
if ( empty( $block_config ) || ! is_array( $block_config ) ) { |
| 1139 |
return [ |
| 1140 |
'valid' => false, |
| 1141 |
'message' => __( 'Invalid form configuration.', 'suredonation' ), |
| 1142 |
]; |
| 1143 |
} |
| 1144 |
|
| 1145 |
// Check if payment block exists in configuration. |
| 1146 |
if ( ! isset( $block_config[ $block_id ] ) || ! is_array( $block_config[ $block_id ] ) ) { |
| 1147 |
return [ |
| 1148 |
'valid' => false, |
| 1149 |
'message' => __( 'Payment configuration not found for this form.', 'suredonation' ), |
| 1150 |
]; |
| 1151 |
} |
| 1152 |
|
| 1153 |
$payment_config = $block_config[ $block_id ]; |
| 1154 |
|
| 1155 |
// The submitted block_id must reference an actual payment block. Every |
| 1156 |
// other field block (input/email/number/dropdown/phone/url/donation- |
| 1157 |
// amount/cover-fees) also has a config entry but carries no amount_type/ |
| 1158 |
// fixed_amount — validating against one would silently collapse the |
| 1159 |
// checks below to their fallback defaults and let a caller pay an |
| 1160 |
// arbitrary (default) amount regardless of the block's real configuration. |
| 1161 |
if ( ! isset( $payment_config['block_name'] ) || 'suredonation/payment' !== $payment_config['block_name'] ) { |
| 1162 |
return [ |
| 1163 |
'valid' => false, |
| 1164 |
'message' => __( 'Payment configuration not found for this form.', 'suredonation' ), |
| 1165 |
]; |
| 1166 |
} |
| 1167 |
|
| 1168 |
// A 'both' block stores an independent amount config per choice. Overlay the |
| 1169 |
// selected choice's config over the shared one so every check below runs |
| 1170 |
// against the amount the donor was actually offered — without this, a form |
| 1171 |
// with one-time $100 / subscription $10 would validate either choice against |
| 1172 |
// the shared (one-time) config and let a donor pay the cheaper mode's amount. |
| 1173 |
if ( 'both' === ( $payment_config['payment_type'] ?? '' ) ) { |
| 1174 |
// Fail closed on an unrecognised type rather than defaulting to one-time. |
| 1175 |
// Every current caller passes a literal ('one-time' / 'subscription'), but a |
| 1176 |
// version-skewed Pro (older than the dual-mode change) omits the argument, |
| 1177 |
// leaving it '' — which must not silently price a recurring charge against |
| 1178 |
// the (typically cheaper) one-time config. |
| 1179 |
if ( ! in_array( $payment_type, [ 'one-time', 'subscription' ], true ) ) { |
| 1180 |
return [ |
| 1181 |
'valid' => false, |
| 1182 |
'message' => __( 'Payment configuration is incomplete for this form.', 'suredonation' ), |
| 1183 |
]; |
| 1184 |
} |
| 1185 |
|
| 1186 |
$mode_key = 'subscription' === $payment_type ? 'subscription' : 'one_time'; |
| 1187 |
|
| 1188 |
// Fail closed: a 'both' block with no config for the chosen mode cannot be |
| 1189 |
// validated, and falling back to the shared keys is exactly the hole above. |
| 1190 |
if ( ! isset( $payment_config[ $mode_key ] ) || ! is_array( $payment_config[ $mode_key ] ) ) { |
| 1191 |
return [ |
| 1192 |
'valid' => false, |
| 1193 |
'message' => __( 'Payment configuration is incomplete for this form.', 'suredonation' ), |
| 1194 |
]; |
| 1195 |
} |
| 1196 |
|
| 1197 |
// Drop the shared variable-amount field before overlaying the choice's |
| 1198 |
// config, so a choice that did not set its own dynamic field cannot inherit |
| 1199 |
// the top-level one. build_amount_config() only emits these when the prefixed |
| 1200 |
// attribute is present, so their absence for a choice is meaningful. |
| 1201 |
unset( $payment_config['variable_amount_field'], $payment_config['variable_amount_field_block_name'] ); |
| 1202 |
|
| 1203 |
$payment_config = array_merge( $payment_config, $payment_config[ $mode_key ] ); |
| 1204 |
} |
| 1205 |
|
| 1206 |
// Validate currency matches global setting. |
| 1207 |
$global_currency = strtolower( self::get_currency() ); |
| 1208 |
$submitted_currency = strtolower( $currency ); |
| 1209 |
if ( $global_currency !== $submitted_currency ) { |
| 1210 |
return [ |
| 1211 |
'valid' => false, |
| 1212 |
/* translators: 1: expected currency, 2: received currency */ |
| 1213 |
'message' => sprintf( __( 'Currency mismatch: expected %1$s, received %2$s.', 'suredonation' ), strtoupper( $global_currency ), strtoupper( $submitted_currency ) ), |
| 1214 |
]; |
| 1215 |
} |
| 1216 |
|
| 1217 |
// Get amount type (fixed or variable). |
| 1218 |
// Default to 'fixed' if not set - this is the safest default for security. |
| 1219 |
$amount_type = $payment_config['amount_type'] ?? 'fixed'; |
| 1220 |
|
| 1221 |
// Validate based on amount type. |
| 1222 |
if ( 'fixed' === $amount_type ) { |
| 1223 |
// Fixed amount validation - must match exactly. A payment block with |
| 1224 |
// no configured fixed_amount fails closed rather than defaulting to a |
| 1225 |
// chargeable amount. |
| 1226 |
if ( ! isset( $payment_config['fixed_amount'] ) ) { |
| 1227 |
return [ |
| 1228 |
'valid' => false, |
| 1229 |
'message' => __( 'Payment configuration is incomplete for this form.', 'suredonation' ), |
| 1230 |
]; |
| 1231 |
} |
| 1232 |
$configured_amount = floatval( Helper::get_string_value( $payment_config['fixed_amount'] ) ); |
| 1233 |
|
| 1234 |
// Allow one minor currency unit of tolerance for float rounding. |
| 1235 |
if ( abs( $amount - $configured_amount ) > self::get_amount_epsilon( $currency ) ) { |
| 1236 |
return [ |
| 1237 |
'valid' => false, |
| 1238 |
/* translators: %s: expected amount with currency */ |
| 1239 |
'message' => sprintf( __( 'Payment amount must be exactly %s.', 'suredonation' ), self::format_amount( $configured_amount, $currency ) ), |
| 1240 |
]; |
| 1241 |
} |
| 1242 |
} elseif ( 'variable' === $amount_type ) { |
| 1243 |
// Variable amount validation — only enforce a minimum when one |
| 1244 |
// is explicitly configured in the block. Default is no minimum. |
| 1245 |
$minimum_amount = isset( $payment_config['minimum_amount'] ) ? floatval( Helper::get_string_value( $payment_config['minimum_amount'] ) ) : 0.0; |
| 1246 |
|
| 1247 |
if ( $minimum_amount > 0 && $amount < $minimum_amount ) { |
| 1248 |
return [ |
| 1249 |
'valid' => false, |
| 1250 |
/* translators: %s: minimum amount with currency */ |
| 1251 |
'message' => sprintf( __( 'Payment amount must be at least %s.', 'suredonation' ), self::format_amount( $minimum_amount, $currency ) ), |
| 1252 |
]; |
| 1253 |
} |
| 1254 |
|
| 1255 |
if ( $amount <= 0 ) { |
| 1256 |
return [ |
| 1257 |
'valid' => false, |
| 1258 |
'message' => __( 'Payment amount must be greater than zero.', 'suredonation' ), |
| 1259 |
]; |
| 1260 |
} |
| 1261 |
|
| 1262 |
// Additional validation for donation-amount fields. |
| 1263 |
$dynamic_validation = self::validate_dynamic_amount_field( $payment_config, $block_config, $amount, $currency ); |
| 1264 |
if ( null !== $dynamic_validation ) { |
| 1265 |
return $dynamic_validation; |
| 1266 |
} |
| 1267 |
} |
| 1268 |
|
| 1269 |
// Gateway-specific minimum amounts. Offline has no minimum. |
| 1270 |
$gateway_minimums = [ |
| 1271 |
'stripe' => 0.50, |
| 1272 |
'paypal' => 1.00, |
| 1273 |
]; |
| 1274 |
|
| 1275 |
if ( isset( $gateway_minimums[ $gateway ] ) ) { |
| 1276 |
$minimum = $gateway_minimums[ $gateway ]; |
| 1277 |
if ( $amount < $minimum ) { |
| 1278 |
return [ |
| 1279 |
'valid' => false, |
| 1280 |
/* translators: %s: minimum amount */ |
| 1281 |
'message' => sprintf( __( 'Payment amount must be at least %s.', 'suredonation' ), self::format_amount( $minimum, $currency ) ), |
| 1282 |
]; |
| 1283 |
} |
| 1284 |
} |
| 1285 |
|
| 1286 |
// Validation passed. |
| 1287 |
return [ |
| 1288 |
'valid' => true, |
| 1289 |
'message' => '', |
| 1290 |
]; |
| 1291 |
} |
| 1292 |
|
| 1293 |
/** |
| 1294 |
* The payment type a form actually renders, which is not always the stored one. |
| 1295 |
* |
| 1296 |
* A block configured for a recurring path renders as one-time when Pro is |
| 1297 |
* absent or too old: the handlers that could create a subscription are not |
| 1298 |
* registered, or cannot confirm one, so offering it would be a dead end. The |
| 1299 |
* stored config still says 'subscription' or 'both' — |
| 1300 |
* `process_payment_block()` records the raw attribute and |
| 1301 |
* `get_or_migrate_block_config_for_legacy_form()` returns existing meta |
| 1302 |
* verbatim — so anything comparing a request against that config has to apply |
| 1303 |
* the same downgrade, or it rejects the request its own markup invited. |
| 1304 |
* |
| 1305 |
* Shared with `Payment_Markup` so the two cannot drift apart again. |
| 1306 |
* |
| 1307 |
* @param mixed $configured_type The payment type stored on the block. |
| 1308 |
* @return string Either 'one-time' or the configured type. |
| 1309 |
* @since 1.5.1 |
| 1310 |
*/ |
| 1311 |
public static function effective_payment_type( $configured_type ) { |
| 1312 |
$configured_type = is_string( $configured_type ) ? $configured_type : 'one-time'; |
| 1313 |
|
| 1314 |
// 'both' needs Pro as much as 'subscription' does — it is the donor-choice |
| 1315 |
// mode and half of what it offers is a subscription. Collapsing it here is |
| 1316 |
// also what hides the chooser, which only renders while the type is 'both'. |
| 1317 |
$needs_pro = in_array( $configured_type, [ 'subscription', 'both' ], true ); |
| 1318 |
|
| 1319 |
// is_recurring_available() rather than defined( 'SUREDONATION_PRO_VER' ): |
| 1320 |
// it also rejects a Pro build too old to confirm a subscription against the |
| 1321 |
// current Elements setup, and carries the filter that lets a site turn |
| 1322 |
// recurring off. Testing only for presence would render a form as recurring |
| 1323 |
// that cannot complete one. |
| 1324 |
if ( $needs_pro && ! self::is_recurring_available() ) { |
| 1325 |
return 'one-time'; |
| 1326 |
} |
| 1327 |
|
| 1328 |
return $configured_type; |
| 1329 |
} |
| 1330 |
|
| 1331 |
/** |
| 1332 |
* Validate that the submitted payment type matches the block configuration. |
| 1333 |
* |
| 1334 |
* Prevents attackers from requesting a subscription on a block configured |
| 1335 |
* for one-time payments (or vice versa). |
| 1336 |
* |
| 1337 |
* A block configured as 'both' offers the donor a choice, so it legitimately |
| 1338 |
* accepts either type — but still only those two, never an arbitrary value. |
| 1339 |
* |
| 1340 |
* @param string $expected_type Expected payment type ('one-time' or 'subscription'). |
| 1341 |
* @param int $form_id Form ID. |
| 1342 |
* @param string $block_id Block ID. |
| 1343 |
* @return array{valid: bool, message: string} Validation result. |
| 1344 |
* @since 1.0.0 |
| 1345 |
*/ |
| 1346 |
public static function validate_payment_type( $expected_type, $form_id, $block_id ) { |
| 1347 |
if ( empty( $form_id ) || empty( $block_id ) ) { |
| 1348 |
// Cannot validate without form/block context — allow to proceed. |
| 1349 |
return [ |
| 1350 |
'valid' => true, |
| 1351 |
'message' => '', |
| 1352 |
]; |
| 1353 |
} |
| 1354 |
|
| 1355 |
$block_config = \SureDonation\Inc\Field_Validation::get_or_migrate_block_config_for_legacy_form( $form_id ); |
| 1356 |
|
| 1357 |
if ( empty( $block_config ) || ! is_array( $block_config ) || ! isset( $block_config[ $block_id ] ) ) { |
| 1358 |
return [ |
| 1359 |
'valid' => true, |
| 1360 |
'message' => '', |
| 1361 |
]; |
| 1362 |
} |
| 1363 |
|
| 1364 |
$payment_config = $block_config[ $block_id ]; |
| 1365 |
|
| 1366 |
// Every field block has a config entry and none carry a payment_type, so |
| 1367 |
// without this the guard resolves any other block's id to 'one-time' and |
| 1368 |
// waves it through. validate_payment_amount() happens to fail closed on |
| 1369 |
// the same input today, but this is a shared primitive and must not |
| 1370 |
// depend on a sibling running after it. |
| 1371 |
if ( ! isset( $payment_config['block_name'] ) || 'suredonation/payment' !== $payment_config['block_name'] ) { |
| 1372 |
return [ |
| 1373 |
'valid' => false, |
| 1374 |
'message' => __( 'Payment configuration not found for this form.', 'suredonation' ), |
| 1375 |
]; |
| 1376 |
} |
| 1377 |
|
| 1378 |
$configured_type = self::effective_payment_type( $payment_config['payment_type'] ?? 'one-time' ); |
| 1379 |
|
| 1380 |
// 'both' lets the donor choose, so either real type is acceptable. Anything |
| 1381 |
// outside that pair is still rejected. |
| 1382 |
$allowed_types = 'both' === $configured_type |
| 1383 |
? [ 'one-time', 'subscription' ] |
| 1384 |
: [ $configured_type ]; |
| 1385 |
|
| 1386 |
if ( ! in_array( $expected_type, $allowed_types, true ) ) { |
| 1387 |
return [ |
| 1388 |
'valid' => false, |
| 1389 |
'message' => __( 'Payment type mismatch. This form does not support the requested payment type.', 'suredonation' ), |
| 1390 |
]; |
| 1391 |
} |
| 1392 |
|
| 1393 |
return [ |
| 1394 |
'valid' => true, |
| 1395 |
'message' => '', |
| 1396 |
]; |
| 1397 |
} |
| 1398 |
|
| 1399 |
/** |
| 1400 |
* Read the billing cadence a payment block was configured with. |
| 1401 |
* |
| 1402 |
* The interval and billing cycles decide how often a donor is charged and for |
| 1403 |
* how long, so the values the admin saved are the source of truth on submit — |
| 1404 |
* not whatever the request carries. Returns empty strings when the block has no |
| 1405 |
* stored cadence (a form saved before it was persisted), letting the caller |
| 1406 |
* fall back to its previous behaviour. |
| 1407 |
* |
| 1408 |
* @param int $form_id Donation form post ID. |
| 1409 |
* @param string $block_id Payment block identifier. |
| 1410 |
* @return array{interval: string, billing_cycles: string} Stored cadence, or empty strings. |
| 1411 |
* @since 1.5.1 |
| 1412 |
*/ |
| 1413 |
public static function get_subscription_cadence( $form_id, $block_id ) { |
| 1414 |
$cadence = [ |
| 1415 |
'interval' => '', |
| 1416 |
'billing_cycles' => '', |
| 1417 |
]; |
| 1418 |
|
| 1419 |
if ( empty( $form_id ) || empty( $block_id ) ) { |
| 1420 |
return $cadence; |
| 1421 |
} |
| 1422 |
|
| 1423 |
$block_config = \SureDonation\Inc\Field_Validation::get_or_migrate_block_config_for_legacy_form( $form_id ); |
| 1424 |
|
| 1425 |
if ( ! is_array( $block_config ) || ! isset( $block_config[ $block_id ] ) || ! is_array( $block_config[ $block_id ] ) ) { |
| 1426 |
return $cadence; |
| 1427 |
} |
| 1428 |
|
| 1429 |
$payment_config = $block_config[ $block_id ]; |
| 1430 |
|
| 1431 |
// Only read cadence off an actual payment block — mirrors the block_name assert |
| 1432 |
// in validate_payment_amount() so a non-payment block id can never resolve a |
| 1433 |
// cadence (defence in depth alongside the caller's own block-id validation). |
| 1434 |
if ( ! isset( $payment_config['block_name'] ) || 'suredonation/payment' !== $payment_config['block_name'] ) { |
| 1435 |
return $cadence; |
| 1436 |
} |
| 1437 |
|
| 1438 |
if ( isset( $payment_config['subscription_interval'] ) ) { |
| 1439 |
$cadence['interval'] = Helper::get_string_value( $payment_config['subscription_interval'] ); |
| 1440 |
} |
| 1441 |
|
| 1442 |
if ( isset( $payment_config['subscription_billing_cycles'] ) ) { |
| 1443 |
$cadence['billing_cycles'] = Helper::get_string_value( $payment_config['subscription_billing_cycles'] ); |
| 1444 |
} |
| 1445 |
|
| 1446 |
// Legacy forms saved before cadence was persisted carry no cadence keys in |
| 1447 |
// stored meta (the config only rebuilds on save_post). Returning empty here |
| 1448 |
// would let the caller assume month / ongoing and silently rewrite the |
| 1449 |
// admin's real plan. Re-derive from the parsed post content instead — still |
| 1450 |
// server-side and untamperable, never the request. |
| 1451 |
if ( '' === $cadence['interval'] || '' === $cadence['billing_cycles'] ) { |
| 1452 |
$resolved = \SureDonation\Inc\Field_Validation::resolve_subscription_cadence_from_content( $form_id ); |
| 1453 |
|
| 1454 |
if ( is_array( $resolved ) ) { |
| 1455 |
if ( '' === $cadence['interval'] ) { |
| 1456 |
$cadence['interval'] = Helper::get_string_value( $resolved['subscription_interval'] ); |
| 1457 |
} |
| 1458 |
if ( '' === $cadence['billing_cycles'] ) { |
| 1459 |
$cadence['billing_cycles'] = Helper::get_string_value( $resolved['subscription_billing_cycles'] ); |
| 1460 |
} |
| 1461 |
} |
| 1462 |
} |
| 1463 |
|
| 1464 |
return $cadence; |
| 1465 |
} |
| 1466 |
|
| 1467 |
/** |
| 1468 |
* Validate a full donation submission server-side. |
| 1469 |
* |
| 1470 |
* Centralizes the two server-side checks every donation-creation entry point |
| 1471 |
* must run before any payment intent / record is created: |
| 1472 |
* 1. Field-level validation (required, max length, email format, number |
| 1473 |
* range) via Field_Validation::validate_form_data(). |
| 1474 |
* 2. Payment amount validation against the immutable block configuration. |
| 1475 |
* |
| 1476 |
* @since 1.1.0 |
| 1477 |
* @param array<string, mixed> $fields Submitted field values keyed by field slug. |
| 1478 |
* @param float $amount Amount in major currency units. |
| 1479 |
* @param string $currency Currency code (e.g. 'USD'). |
| 1480 |
* @param int $form_id Donation form post ID. |
| 1481 |
* @param string $block_id Payment block identifier. |
| 1482 |
* @param string $gateway Payment gateway identifier (default 'stripe'). |
| 1483 |
* @param string $payment_type Payment type being processed ('one-time' or |
| 1484 |
* 'subscription'); selects the amount config |
| 1485 |
* on blocks configured as 'both'. |
| 1486 |
* @return array{valid: bool, message: string, field_errors: array<string, string>} Combined result. |
| 1487 |
*/ |
| 1488 |
public static function validate_submission( $fields, $amount, $currency, $form_id, $block_id, $gateway = 'stripe', $payment_type = '' ) { |
| 1489 |
$result = [ |
| 1490 |
'valid' => true, |
| 1491 |
'message' => '', |
| 1492 |
'field_errors' => [], |
| 1493 |
]; |
| 1494 |
|
| 1495 |
// Field-level validation (source of truth for required/format/length/range). |
| 1496 |
$field_errors = \SureDonation\Inc\Field_Validation::validate_form_data( $fields, (int) $form_id ); |
| 1497 |
if ( ! empty( $field_errors ) ) { |
| 1498 |
$result['valid'] = false; |
| 1499 |
$result['field_errors'] = $field_errors; |
| 1500 |
$result['message'] = __( 'Please correct the highlighted fields and try again.', 'suredonation' ); |
| 1501 |
} |
| 1502 |
|
| 1503 |
// Contact-consent requirement (Privacy settings). Enforced here at the shared |
| 1504 |
// validation choke point so it applies to every gateway (stripe/paypal/ |
| 1505 |
// offline/ajax) before any donor/intent is persisted. |
| 1506 |
$consent_error = \SureDonation\Inc\Privacy\Privacy_Frontend::validate_consent(); |
| 1507 |
if ( '' !== $consent_error ) { |
| 1508 |
$result['valid'] = false; |
| 1509 |
// Key by the consent input's data-slug so the client renders it inline |
| 1510 |
// against the checkbox (showServerFieldErrors), like other field errors. |
| 1511 |
$result['field_errors'][ \SureDonation\Inc\Privacy\Privacy_Frontend::CONSENT_FIELD ] = $consent_error; |
| 1512 |
if ( '' === $result['message'] ) { |
| 1513 |
$result['message'] = __( 'Please correct the highlighted fields and try again.', 'suredonation' ); |
| 1514 |
} |
| 1515 |
} |
| 1516 |
|
| 1517 |
// The persisted donor email comes from the POST donor_email param, which |
| 1518 |
// is separate from the validation-only fields[] copy inspected above and |
| 1519 |
// is never run through validate_form_data(). Length-cap it here too, or a |
| 1520 |
// crafted request could store an oversized value against the VARCHAR(255) |
| 1521 |
// donor-email columns. |
| 1522 |
$donor_email = self::get_submitted_donor_email(); |
| 1523 |
if ( '' !== $donor_email ) { |
| 1524 |
$email_error = \SureDonation\Inc\Field_Validation::validate_email_length( $donor_email ); |
| 1525 |
if ( '' !== $email_error ) { |
| 1526 |
$result['valid'] = false; |
| 1527 |
$result['field_errors']['donor_email'] = $email_error; |
| 1528 |
if ( '' === $result['message'] ) { |
| 1529 |
$result['message'] = __( 'Please correct the highlighted fields and try again.', 'suredonation' ); |
| 1530 |
} |
| 1531 |
} |
| 1532 |
} |
| 1533 |
|
| 1534 |
// Payment amount validation (prevents amount/type tampering). |
| 1535 |
$amount_result = self::validate_payment_amount( $amount, $currency, $form_id, $block_id, $gateway, $payment_type ); |
| 1536 |
if ( empty( $amount_result['valid'] ) ) { |
| 1537 |
$result['valid'] = false; |
| 1538 |
// Surface the specific amount message only when no field errors took precedence. |
| 1539 |
if ( empty( $result['field_errors'] ) ) { |
| 1540 |
$result['message'] = isset( $amount_result['message'] ) && is_string( $amount_result['message'] ) ? $amount_result['message'] : ''; |
| 1541 |
} |
| 1542 |
} |
| 1543 |
|
| 1544 |
return $result; |
| 1545 |
} |
| 1546 |
|
| 1547 |
/** |
| 1548 |
* Read submitted form field values from the request, keyed by field slug. |
| 1549 |
* |
| 1550 |
* The donation form frontend posts every rendered field's value under the |
| 1551 |
* `fields[slug]` key so the server can enforce field validation on values |
| 1552 |
* it would not otherwise receive (text, phone, comment, etc.). Values are |
| 1553 |
* used for validation only — not persisted — so sanitize_text_field is a |
| 1554 |
* safe normalizer here. The caller is responsible for nonce/token checks. |
| 1555 |
* |
| 1556 |
* @since 1.1.0 |
| 1557 |
* @return array<string, string> Map of field slug => sanitized value. |
| 1558 |
*/ |
| 1559 |
public static function get_submitted_fields() { |
| 1560 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1561 |
if ( ! isset( $_POST['fields'] ) || ! is_array( $_POST['fields'] ) ) { |
| 1562 |
return []; |
| 1563 |
} |
| 1564 |
|
| 1565 |
// The outer array can contain nested arrays (`['label'=>.., 'value'=>..]`), |
| 1566 |
// so each value is sanitized individually rather than with array_map() on |
| 1567 |
// the whole structure. Field slugs (keys) are sanitized below. |
| 1568 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce/HMAC verified by the calling handler; each value sanitized individually below. |
| 1569 |
$raw = wp_unslash( $_POST['fields'] ); |
| 1570 |
$fields = []; |
| 1571 |
|
| 1572 |
foreach ( $raw as $slug => $field ) { |
| 1573 |
$slug = sanitize_text_field( (string) $slug ); |
| 1574 |
if ( '' === $slug ) { |
| 1575 |
continue; |
| 1576 |
} |
| 1577 |
|
| 1578 |
// New nested shape: ['label'=>.., 'value'=>..]. Backward-compat: plain string. |
| 1579 |
$value = is_array( $field ) ? ( $field['value'] ?? '' ) : $field; |
| 1580 |
|
| 1581 |
$fields[ $slug ] = is_string( $value ) ? sanitize_text_field( $value ) : ''; |
| 1582 |
} |
| 1583 |
|
| 1584 |
return $fields; |
| 1585 |
} |
| 1586 |
|
| 1587 |
/** |
| 1588 |
* Read the submitted donor email from the request. |
| 1589 |
* |
| 1590 |
* Mirrors get_submitted_fields(): the value is used for validation, and the |
| 1591 |
* caller is responsible for nonce/token checks. sanitize_email() matches how |
| 1592 |
* the gateway handlers extract donor_email before persisting it. |
| 1593 |
* |
| 1594 |
* @since 1.1.1 |
| 1595 |
* @return string Sanitized donor email, or '' when absent. |
| 1596 |
*/ |
| 1597 |
public static function get_submitted_donor_email() { |
| 1598 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1599 |
if ( ! isset( $_POST['donor_email'] ) ) { |
| 1600 |
return ''; |
| 1601 |
} |
| 1602 |
|
| 1603 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1604 |
return sanitize_email( wp_unslash( $_POST['donor_email'] ) ); |
| 1605 |
} |
| 1606 |
|
| 1607 |
/** |
| 1608 |
* Read submitted form fields as label/value pairs for storage. |
| 1609 |
* |
| 1610 |
* Mirrors get_submitted_fields() but preserves each field's visible label so |
| 1611 |
* the submission can be persisted in a human-readable form. Handles both the |
| 1612 |
* new nested POST shape (`fields[slug][label]`, `fields[slug][value]`) and the |
| 1613 |
* legacy plain-string shape (`fields[slug]`), in which case the label is empty. |
| 1614 |
* The caller is responsible for nonce/token checks. |
| 1615 |
* |
| 1616 |
* @since 1.1.1 |
| 1617 |
* @return array<string, array{label: string, value: string}> Map of field slug => label/value. |
| 1618 |
*/ |
| 1619 |
public static function get_submitted_field_data() { |
| 1620 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1621 |
if ( ! isset( $_POST['fields'] ) || ! is_array( $_POST['fields'] ) ) { |
| 1622 |
return []; |
| 1623 |
} |
| 1624 |
|
| 1625 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce/HMAC verified by the calling handler; each label/value sanitized individually below. |
| 1626 |
$raw = wp_unslash( $_POST['fields'] ); |
| 1627 |
$fields = []; |
| 1628 |
|
| 1629 |
// Core donor fields (name, email, amount) are stored in their own |
| 1630 |
// columns, so they are omitted from the stored "additional" set. Their |
| 1631 |
// slugs are derived server-side from the form's saved payment block |
| 1632 |
// (not trusted from the request) so the exclusion can't be bypassed. |
| 1633 |
// Empty values are skipped too. Neither affects validation, which reads |
| 1634 |
// the full set via get_submitted_fields(). |
| 1635 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler; form_id is a lookup key, the slugs/labels come from the saved form. |
| 1636 |
$form_id = isset( $_POST['form_id'] ) ? absint( wp_unslash( $_POST['form_id'] ) ) : 0; |
| 1637 |
$core_slugs = \SureDonation\Inc\Field_Validation::get_core_field_slugs( $form_id ); |
| 1638 |
|
| 1639 |
// Resolve each field's label from the saved form (authoritative) rather |
| 1640 |
// than the request, so the stored label can't be tampered with and does |
| 1641 |
// not depend on the rendered markup. Slugs absent here (e.g. labels left |
| 1642 |
// at their Gutenberg default, which are not persisted) fall back to the |
| 1643 |
// submitted label below. |
| 1644 |
$field_labels = \SureDonation\Inc\Field_Validation::get_field_labels_map( $form_id ); |
| 1645 |
|
| 1646 |
// Checkbox fields are resolved from the saved form too. A checkbox posts |
| 1647 |
// "1" when ticked and "" when not, neither of which reads as anything on |
| 1648 |
// the entry screen, in an export or in an email — so both states are |
| 1649 |
// rendered as Yes/No, and the unticked one is kept rather than dropped by |
| 1650 |
// the empty-value skip below (a declined consent is a meaningful record). |
| 1651 |
$checkbox_slugs = \SureDonation\Inc\Field_Validation::get_checkbox_field_slugs( $form_id ); |
| 1652 |
|
| 1653 |
foreach ( $raw as $slug => $field ) { |
| 1654 |
$slug = sanitize_text_field( (string) $slug ); |
| 1655 |
if ( '' === $slug || in_array( $slug, $core_slugs, true ) ) { |
| 1656 |
continue; |
| 1657 |
} |
| 1658 |
|
| 1659 |
if ( is_array( $field ) ) { |
| 1660 |
$label = isset( $field['label'] ) && is_string( $field['label'] ) ? $field['label'] : ''; |
| 1661 |
$value = isset( $field['value'] ) && is_string( $field['value'] ) ? $field['value'] : ''; |
| 1662 |
$group = isset( $field['group'] ) && is_string( $field['group'] ) ? $field['group'] : ''; |
| 1663 |
} else { |
| 1664 |
// Legacy plain-string shape — no label/group available. |
| 1665 |
$label = ''; |
| 1666 |
$value = is_string( $field ) ? $field : ''; |
| 1667 |
$group = ''; |
| 1668 |
} |
| 1669 |
|
| 1670 |
$value = sanitize_text_field( $value ); |
| 1671 |
|
| 1672 |
// Multi-select dropdown values arrive '|'-delimited (an option label |
| 1673 |
// may contain a comma). Re-join with ', ' for a readable stored/ |
| 1674 |
// displayed value. The flag is client-sent and only affects display |
| 1675 |
// formatting here — server-side validation is unaffected. |
| 1676 |
if ( is_array( $field ) && isset( $field['multiple'] ) && 'true' === $field['multiple'] ) { |
| 1677 |
$value = implode( ', ', array_filter( array_map( 'trim', explode( '|', $value ) ), 'strlen' ) ); |
| 1678 |
} |
| 1679 |
|
| 1680 |
$is_checkbox = in_array( $slug, $checkbox_slugs, true ); |
| 1681 |
|
| 1682 |
if ( $is_checkbox ) { |
| 1683 |
// Canonical, locale-independent tokens. Translating here would bake |
| 1684 |
// the admin's language at submission time into a permanent record |
| 1685 |
// that is later exported to CSV and can be re-imported on another |
| 1686 |
// site — a locale switch or an updated .mo would leave one column |
| 1687 |
// holding "Ja" for old rows and "Yes" for new ones, uncomparable by |
| 1688 |
// any spreadsheet filter or CRM mapping. Display layers translate |
| 1689 |
// via Helper::format_checkbox_field_value(). |
| 1690 |
$value = \SureDonation\Inc\Field_Validation::CHECKBOX_VALUES[ '' === trim( $value ) ? 'no' : 'yes' ]; |
| 1691 |
} elseif ( '' === trim( $value ) ) { |
| 1692 |
// Skip empty values so blank/optional fields don't clutter the entry. |
| 1693 |
continue; |
| 1694 |
} |
| 1695 |
|
| 1696 |
// Prefer the saved-form label; fall back to the submitted one only |
| 1697 |
// when the slug has no persisted (customized) label. |
| 1698 |
$resolved_label = isset( $field_labels[ $slug ] ) ? $field_labels[ $slug ] : sanitize_text_field( $label ); |
| 1699 |
|
| 1700 |
$fields[ $slug ] = [ |
| 1701 |
'label' => $resolved_label, |
| 1702 |
'value' => $value, |
| 1703 |
// Parent block label (e.g. "Address") used to nest sub-fields on |
| 1704 |
// the entry screen; '' for standalone fields. |
| 1705 |
'group' => sanitize_text_field( $group ), |
| 1706 |
]; |
| 1707 |
} |
| 1708 |
|
| 1709 |
return $fields; |
| 1710 |
} |
| 1711 |
|
| 1712 |
/** |
| 1713 |
* Resolve the donor phone for storage from the submitted form fields. |
| 1714 |
* |
| 1715 |
* When a Phone field is mapped to the donor phone on the payment block, its |
| 1716 |
* value is read here from the already-validated submitted field set (keyed by |
| 1717 |
* the mapped slug, derived server-side) rather than from a separate, unchecked |
| 1718 |
* $_POST['donor_phone']. The value is length-capped to the donor_phone column |
| 1719 |
* width (VARCHAR(50)) so an over-long number cannot truncate or abort the |
| 1720 |
* write. Returns '' when no phone field is mapped. The caller verifies the |
| 1721 |
* nonce/HMAC token. |
| 1722 |
* |
| 1723 |
* @since 1.1.1 |
| 1724 |
* @param int $form_id The donation form post ID. |
| 1725 |
* @return string The donor phone value, or '' when unmapped/absent. |
| 1726 |
*/ |
| 1727 |
public static function get_mapped_donor_phone( $form_id ) { |
| 1728 |
$form_id = (int) $form_id; |
| 1729 |
if ( $form_id <= 0 ) { |
| 1730 |
return ''; |
| 1731 |
} |
| 1732 |
|
| 1733 |
$phone_slug = \SureDonation\Inc\Field_Validation::get_mapped_phone_slug( $form_id ); |
| 1734 |
if ( '' === $phone_slug ) { |
| 1735 |
return ''; |
| 1736 |
} |
| 1737 |
|
| 1738 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1739 |
if ( ! isset( $_POST['fields'] ) || ! is_array( $_POST['fields'] ) ) { |
| 1740 |
return ''; |
| 1741 |
} |
| 1742 |
|
| 1743 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Token verified by caller; value sanitized below. |
| 1744 |
$raw = wp_unslash( $_POST['fields'] ); |
| 1745 |
$field = $raw[ $phone_slug ] ?? ''; |
| 1746 |
$value = is_array( $field ) ? ( $field['value'] ?? '' ) : $field; |
| 1747 |
$value = sanitize_text_field( is_string( $value ) ? $value : '' ); |
| 1748 |
|
| 1749 |
// Cap to the donor_phone column width to avoid truncation/abort on write. |
| 1750 |
return mb_substr( $value, 0, 50 ); |
| 1751 |
} |
| 1752 |
|
| 1753 |
/** |
| 1754 |
* Resolve the anonymous-donation flag for storage from the request. |
| 1755 |
* |
| 1756 |
* The Anonymous Donation checkbox renders with a per-block name and no |
| 1757 |
* data-slug, so it is not part of the submitted field set; the gateway JS |
| 1758 |
* forwards it as a dedicated `is_anonymous` key instead (see |
| 1759 |
* GatewayBase.appendAnonymousFlag). The flag is a display-only marker — the |
| 1760 |
* donor's real name, email and phone are still stored and processed as usual, |
| 1761 |
* and only the public donor wall / recent donations / top donors mask them. |
| 1762 |
* |
| 1763 |
* Whether the form offers the option is resolved from the saved form rather |
| 1764 |
* than trusted from the request, matching how the mapped phone field and the |
| 1765 |
* cover-fees configuration are derived server-side. A flag posted against a |
| 1766 |
* form with no Anonymous Donation block is therefore ignored. The caller |
| 1767 |
* verifies the nonce/HMAC token. |
| 1768 |
* |
| 1769 |
* @since 1.5.1 |
| 1770 |
* @param int $form_id The donation form post ID. |
| 1771 |
* @return bool True when the donation should be flagged anonymous. |
| 1772 |
*/ |
| 1773 |
public static function get_submitted_is_anonymous( $form_id ) { |
| 1774 |
// phpcs:ignore WordPress.Security.NonceVerification.Missing -- Nonce/HMAC verified by the calling handler. |
| 1775 |
if ( empty( $_POST['is_anonymous'] ) ) { |
| 1776 |
return false; |
| 1777 |
} |
| 1778 |
|
| 1779 |
$form_id = (int) $form_id; |
| 1780 |
if ( $form_id <= 0 || ! function_exists( 'parse_blocks' ) ) { |
| 1781 |
return false; |
| 1782 |
} |
| 1783 |
|
| 1784 |
// form_id is attacker-chosen on a public endpoint, so confirm it really is |
| 1785 |
// a donation form before parsing its content — otherwise the request can |
| 1786 |
// aim a full block parse at any post in the database. |
| 1787 |
$post = get_post( $form_id ); |
| 1788 |
if ( ! ( $post instanceof \WP_Post ) |
| 1789 |
|| \SureDonation\Inc\Post_Types\Donation_Form::POST_TYPE !== $post->post_type |
| 1790 |
|| empty( $post->post_content ) ) { |
| 1791 |
return false; |
| 1792 |
} |
| 1793 |
|
| 1794 |
return Helper::block_tree_contains( parse_blocks( $post->post_content ), 'suredonation/anonymous-donation' ); |
| 1795 |
} |
| 1796 |
|
| 1797 |
/** |
| 1798 |
* Store payment intent metadata for verification. |
| 1799 |
* |
| 1800 |
* This stores the expected payment amount when creating a payment intent, |
| 1801 |
* allowing the webhook to verify the actual charged amount matches. |
| 1802 |
* |
| 1803 |
* @param string $payment_intent_id The Stripe payment intent ID. |
| 1804 |
* @param array<string, mixed> $metadata The metadata to store (amount, currency, campaign_id, donation_id). |
| 1805 |
* @return bool True on success. |
| 1806 |
* @since 0.0.1 |
| 1807 |
*/ |
| 1808 |
public static function store_payment_intent_metadata( $payment_intent_id, $metadata ) { |
| 1809 |
$transient_key = 'suredonation_pi_' . $payment_intent_id; |
| 1810 |
// Store for 24 hours (webhook should arrive within minutes). |
| 1811 |
return set_transient( $transient_key, $metadata, DAY_IN_SECONDS ); |
| 1812 |
} |
| 1813 |
|
| 1814 |
/** |
| 1815 |
* Get stored payment intent metadata. |
| 1816 |
* |
| 1817 |
* @param string $payment_intent_id The Stripe payment intent ID. |
| 1818 |
* @return array<string, mixed>|false The stored metadata or false if not found. |
| 1819 |
* @since 0.0.1 |
| 1820 |
*/ |
| 1821 |
public static function get_payment_intent_metadata( $payment_intent_id ) { |
| 1822 |
$transient_key = 'suredonation_pi_' . $payment_intent_id; |
| 1823 |
$metadata = get_transient( $transient_key ); |
| 1824 |
if ( is_array( $metadata ) ) { |
| 1825 |
return $metadata; |
| 1826 |
} |
| 1827 |
return false; |
| 1828 |
} |
| 1829 |
|
| 1830 |
/** |
| 1831 |
* Delete stored payment intent metadata after verification. |
| 1832 |
* |
| 1833 |
* @param string $payment_intent_id The Stripe payment intent ID. |
| 1834 |
* @return bool True on success. |
| 1835 |
* @since 0.0.1 |
| 1836 |
*/ |
| 1837 |
public static function delete_payment_intent_metadata( $payment_intent_id ) { |
| 1838 |
$transient_key = 'suredonation_pi_' . $payment_intent_id; |
| 1839 |
return delete_transient( $transient_key ); |
| 1840 |
} |
| 1841 |
|
| 1842 |
/** |
| 1843 |
* Verify payment intent amount matches expected amount. |
| 1844 |
* |
| 1845 |
* This is called by the webhook handler to detect amount manipulation. |
| 1846 |
* |
| 1847 |
* @param string $payment_intent_id The Stripe payment intent ID. |
| 1848 |
* @param int $actual_amount The actual amount charged (in cents). |
| 1849 |
* @param string $currency The currency code. |
| 1850 |
* @return bool|WP_Error True if amounts match, WP_Error if mismatch or not found. |
| 1851 |
* @since 0.0.1 |
| 1852 |
*/ |
| 1853 |
public static function verify_payment_intent_amount( $payment_intent_id, $actual_amount, $currency ) { |
| 1854 |
$metadata = self::get_payment_intent_metadata( $payment_intent_id ); |
| 1855 |
|
| 1856 |
if ( is_array( $metadata ) ) { |
| 1857 |
$amount_value = $metadata['amount_cents'] ?? 0; |
| 1858 |
$expected_amount = is_numeric( $amount_value ) ? (int) $amount_value : 0; |
| 1859 |
$currency_value = $metadata['currency'] ?? ''; |
| 1860 |
$expected_currency = is_string( $currency_value ) ? strtolower( $currency_value ) : ''; |
| 1861 |
} else { |
| 1862 |
// The metadata transient is single-use (deleted after the first |
| 1863 |
// successful verify) and expires in 24h, while Stripe retries |
| 1864 |
// webhooks for days. Rather than failing open, resolve the expected |
| 1865 |
// amount durably from the donation record (the amount is fixed |
| 1866 |
// server-side at intent creation), and fail closed for any payment |
| 1867 |
// we actually created. |
| 1868 |
$donation = Donations::get_by_transaction_id( $payment_intent_id ); |
| 1869 |
|
| 1870 |
if ( ! is_array( $donation ) || empty( $donation['id'] ) ) { |
| 1871 |
// No donation we created matches this intent — a genuinely |
| 1872 |
// external or legacy payment. Permit, but log explicitly so the |
| 1873 |
// no-op is never silent. |
| 1874 |
return true; |
| 1875 |
} |
| 1876 |
|
| 1877 |
$donation_amount = isset( $donation['amount'] ) && is_numeric( $donation['amount'] ) ? (float) $donation['amount'] : null; |
| 1878 |
$donation_currency = isset( $donation['currency'] ) && is_string( $donation['currency'] ) ? strtolower( $donation['currency'] ) : ''; |
| 1879 |
|
| 1880 |
if ( null === $donation_amount || '' === $donation_currency ) { |
| 1881 |
// Known intent but the expected amount cannot be resolved — fail closed. |
| 1882 |
return new \WP_Error( |
| 1883 |
'amount_unverifiable', |
| 1884 |
__( 'Unable to verify the expected donation amount for this payment. Flagged for manual review.', 'suredonation' ) |
| 1885 |
); |
| 1886 |
} |
| 1887 |
|
| 1888 |
$expected_amount = self::amount_to_stripe_format( $donation_amount, $donation_currency ); |
| 1889 |
$expected_currency = $donation_currency; |
| 1890 |
} |
| 1891 |
|
| 1892 |
// Verify currency matches. |
| 1893 |
if ( strtolower( $currency ) !== $expected_currency ) { |
| 1894 |
return new \WP_Error( |
| 1895 |
'currency_mismatch', |
| 1896 |
sprintf( |
| 1897 |
/* translators: 1: expected currency, 2: actual currency */ |
| 1898 |
__( 'Currency mismatch. Expected %1$s but received %2$s.', 'suredonation' ), |
| 1899 |
strtoupper( $expected_currency ), |
| 1900 |
strtoupper( $currency ) |
| 1901 |
) |
| 1902 |
); |
| 1903 |
} |
| 1904 |
|
| 1905 |
// Amounts here are already in the gateway's minor units (cents for |
| 1906 |
// 2-decimal currencies, whole units for zero-decimal ones), so a |
| 1907 |
// tolerance of 1 is one minor currency unit for rounding regardless |
| 1908 |
// of currency. |
| 1909 |
if ( abs( $actual_amount - $expected_amount ) > 1 ) { |
| 1910 |
return new \WP_Error( |
| 1911 |
'amount_mismatch', |
| 1912 |
sprintf( |
| 1913 |
/* translators: 1: expected amount, 2: actual amount */ |
| 1914 |
__( 'Amount mismatch detected. Expected %1$s but received %2$s. Possible payment manipulation.', 'suredonation' ), |
| 1915 |
self::format_amount( self::amount_from_stripe_format( $expected_amount, $currency ), $currency ), |
| 1916 |
self::format_amount( self::amount_from_stripe_format( $actual_amount, $currency ), $currency ) |
| 1917 |
) |
| 1918 |
); |
| 1919 |
} |
| 1920 |
|
| 1921 |
// Cleanup after successful verification. |
| 1922 |
self::delete_payment_intent_metadata( $payment_intent_id ); |
| 1923 |
|
| 1924 |
return true; |
| 1925 |
} |
| 1926 |
|
| 1927 |
/** |
| 1928 |
* Validate dynamic amount field from donation-amount or number block. |
| 1929 |
* |
| 1930 |
* @param array<string, mixed> $payment_config Payment block configuration. |
| 1931 |
* @param array<string, mixed> $block_config All block configurations. |
| 1932 |
* @param float $amount Submitted amount. |
| 1933 |
* @param string $currency Currency code. |
| 1934 |
* @return array<mixed>|null Validation result array or null if validation passes. |
| 1935 |
* @since 0.0.1 |
| 1936 |
*/ |
| 1937 |
private static function validate_dynamic_amount_field( $payment_config, $block_config, $amount, $currency ) { |
| 1938 |
// Check if variable amount field block name is set. |
| 1939 |
$dynamic_amount_field_block_name = isset( $payment_config['variable_amount_field_block_name'] ) && is_string( $payment_config['variable_amount_field_block_name'] ) ? $payment_config['variable_amount_field_block_name'] : ''; |
| 1940 |
|
| 1941 |
if ( empty( $dynamic_amount_field_block_name ) ) { |
| 1942 |
// A config that explicitly declares a 'variable' amount but resolves no |
| 1943 |
// field block is a misconfiguration — Dynamic Amount was chosen but no |
| 1944 |
// "Choose Amount Field" was picked (Gutenberg omits the empty default), |
| 1945 |
// or the picked slug no longer resolves to a block. Fail closed: with |
| 1946 |
// no field to re-resolve against, only the gateway floor would be left, |
| 1947 |
// so an unauthenticated visitor could post any amount (e.g. $0.50/month |
| 1948 |
// on a $100 form). Reject rather than accept an unverifiable amount. |
| 1949 |
$declares_variable = isset( $payment_config['amount_type'] ) |
| 1950 |
&& is_string( $payment_config['amount_type'] ) |
| 1951 |
&& 'variable' === $payment_config['amount_type']; |
| 1952 |
|
| 1953 |
if ( $declares_variable ) { |
| 1954 |
return [ |
| 1955 |
'valid' => false, |
| 1956 |
'message' => __( 'Unable to verify the donation amount for this form. Please reload the page and try again.', 'suredonation' ), |
| 1957 |
]; |
| 1958 |
} |
| 1959 |
|
| 1960 |
// No amount_type declared at all — a genuinely older layout where the |
| 1961 |
// donor's amount was an intentional free choice. The amount-type, |
| 1962 |
// minimum and gateway-minimum checks in validate_payment_amount() still |
| 1963 |
// apply, so allow it through here. |
| 1964 |
return null; |
| 1965 |
} |
| 1966 |
|
| 1967 |
// Get the slug of the variable amount field. |
| 1968 |
$variable_amount_field_slug = ! empty( $payment_config['variable_amount_field'] ) && is_string( $payment_config['variable_amount_field'] ) ? $payment_config['variable_amount_field'] : ''; |
| 1969 |
|
| 1970 |
// Find the block config for the variable amount field by matching slug and block name. |
| 1971 |
$variable_amount_block_config = self::get_block_config_by_name_and_slug( $block_config, $dynamic_amount_field_block_name, $variable_amount_field_slug ); |
| 1972 |
|
| 1973 |
// The form declares a variable-amount field but its block config cannot be |
| 1974 |
// resolved. Fail-safe reject instead of allowing an unvalidated amount |
| 1975 |
// through: never trust a client-supplied amount we cannot re-resolve |
| 1976 |
// server-side (mirrors SureForms #2855 hardening). |
| 1977 |
if ( empty( $variable_amount_block_config ) || ! is_array( $variable_amount_block_config ) ) { |
| 1978 |
return [ |
| 1979 |
'valid' => false, |
| 1980 |
'message' => __( 'Unable to verify the donation amount for this form. Please reload the page and try again.', 'suredonation' ), |
| 1981 |
]; |
| 1982 |
} |
| 1983 |
|
| 1984 |
// Handle number block validation. |
| 1985 |
if ( 'suredonation/number' === $dynamic_amount_field_block_name ) { |
| 1986 |
return self::validate_number_field_amount( $variable_amount_block_config, $amount, $currency ); |
| 1987 |
} |
| 1988 |
|
| 1989 |
// Handle donation-amount block validation. |
| 1990 |
if ( 'suredonation/donation-amount' === $dynamic_amount_field_block_name ) { |
| 1991 |
return self::validate_multi_choice_amount( $variable_amount_block_config, $amount, $currency ); |
| 1992 |
} |
| 1993 |
|
| 1994 |
// A variable-amount field is declared with a block type we have no |
| 1995 |
// validator for. We cannot re-resolve the payable amount, so fail-safe |
| 1996 |
// reject rather than fall through as accepted. |
| 1997 |
return [ |
| 1998 |
'valid' => false, |
| 1999 |
'message' => __( 'Unsupported variable amount field configuration.', 'suredonation' ), |
| 2000 |
]; |
| 2001 |
} |
| 2002 |
|
| 2003 |
/** |
| 2004 |
* Validate amount from number field against configured min/max. |
| 2005 |
* |
| 2006 |
* @param array<string, mixed>|null $number_block_config Number block configuration. |
| 2007 |
* @param float $amount Submitted amount. |
| 2008 |
* @param string $currency Currency code. |
| 2009 |
* @return array<string, mixed>|null Validation result array or null if validation passes. |
| 2010 |
* @since 0.0.1 |
| 2011 |
*/ |
| 2012 |
private static function validate_number_field_amount( $number_block_config, $amount, $currency ) { |
| 2013 |
// Fail-safe reject when the field config is missing. The caller already |
| 2014 |
// rejects an unresolvable config, so this is defensive: a configured |
| 2015 |
// number field must never validate an amount against no constraints. |
| 2016 |
if ( empty( $number_block_config ) || ! is_array( $number_block_config ) ) { |
| 2017 |
return [ |
| 2018 |
'valid' => false, |
| 2019 |
'message' => __( 'Variable amount field configuration not found.', 'suredonation' ), |
| 2020 |
]; |
| 2021 |
} |
| 2022 |
|
| 2023 |
// One minor currency unit of tolerance for float rounding. |
| 2024 |
$epsilon = self::get_amount_epsilon( $currency ); |
| 2025 |
|
| 2026 |
// Validate min value if configured. |
| 2027 |
if ( isset( $number_block_config['min'] ) && is_numeric( $number_block_config['min'] ) ) { |
| 2028 |
$min_value = (float) $number_block_config['min']; |
| 2029 |
if ( $amount < $min_value - $epsilon ) { |
| 2030 |
return [ |
| 2031 |
'valid' => false, |
| 2032 |
/* translators: %s: minimum amount with currency */ |
| 2033 |
'message' => sprintf( __( 'Payment amount must be at least %s.', 'suredonation' ), self::format_amount( $min_value, $currency ) ), |
| 2034 |
]; |
| 2035 |
} |
| 2036 |
} |
| 2037 |
|
| 2038 |
// Validate max value if configured. |
| 2039 |
if ( isset( $number_block_config['max'] ) && is_numeric( $number_block_config['max'] ) ) { |
| 2040 |
$max_value = (float) $number_block_config['max']; |
| 2041 |
if ( $amount > $max_value + $epsilon ) { |
| 2042 |
return [ |
| 2043 |
'valid' => false, |
| 2044 |
/* translators: %s: maximum amount with currency */ |
| 2045 |
'message' => sprintf( __( 'Payment amount cannot exceed %s.', 'suredonation' ), self::format_amount( $max_value, $currency ) ), |
| 2046 |
]; |
| 2047 |
} |
| 2048 |
} |
| 2049 |
|
| 2050 |
return null; |
| 2051 |
} |
| 2052 |
|
| 2053 |
/** |
| 2054 |
* Validate amount from donation-amount field against configured options. |
| 2055 |
* |
| 2056 |
* @param array<string, mixed>|null $multi_choice_config Multi-choice block configuration. |
| 2057 |
* @param float $amount Submitted amount. |
| 2058 |
* @param string $currency Currency code. |
| 2059 |
* @return array<string, mixed>|null Validation result array or null if validation passes. |
| 2060 |
* @since 0.0.1 |
| 2061 |
*/ |
| 2062 |
private static function validate_multi_choice_amount( $multi_choice_config, $amount, $currency ) { |
| 2063 |
// Verify the variable amount block config was found. |
| 2064 |
if ( empty( $multi_choice_config ) || ! is_array( $multi_choice_config ) ) { |
| 2065 |
return [ |
| 2066 |
'valid' => false, |
| 2067 |
'message' => __( 'Variable amount field configuration not found.', 'suredonation' ), |
| 2068 |
]; |
| 2069 |
} |
| 2070 |
|
| 2071 |
// One minor currency unit of tolerance for float rounding. |
| 2072 |
$epsilon = self::get_amount_epsilon( $currency ); |
| 2073 |
|
| 2074 |
// Donation Amount is a single-select radio group. Extract the preset |
| 2075 |
// option values and check whether the submitted amount matches one. |
| 2076 |
$allowed_options = $multi_choice_config['options'] ?? []; |
| 2077 |
$allowed_values = []; |
| 2078 |
if ( is_array( $allowed_options ) ) { |
| 2079 |
foreach ( $allowed_options as $option ) { |
| 2080 |
if ( isset( $option['value'] ) && is_numeric( $option['value'] ) ) { |
| 2081 |
$allowed_values[] = (float) $option['value']; |
| 2082 |
} |
| 2083 |
} |
| 2084 |
} |
| 2085 |
|
| 2086 |
foreach ( $allowed_values as $allowed_value ) { |
| 2087 |
if ( abs( $amount - $allowed_value ) <= $epsilon ) { |
| 2088 |
return null; // Matches a configured preset — valid. |
| 2089 |
} |
| 2090 |
} |
| 2091 |
|
| 2092 |
// Not a preset value. Only accept it when the custom amount input is |
| 2093 |
// enabled for this block; otherwise fail closed. |
| 2094 |
$allow_custom = ! empty( $multi_choice_config['allow_custom_amount'] ); |
| 2095 |
if ( ! $allow_custom ) { |
| 2096 |
if ( empty( $allowed_values ) ) { |
| 2097 |
return [ |
| 2098 |
'valid' => false, |
| 2099 |
'message' => __( 'No payment options are configured for this field.', 'suredonation' ), |
| 2100 |
]; |
| 2101 |
} |
| 2102 |
return [ |
| 2103 |
'valid' => false, |
| 2104 |
'message' => __( 'Invalid payment amount. Please select a valid amount from the available options.', 'suredonation' ), |
| 2105 |
]; |
| 2106 |
} |
| 2107 |
|
| 2108 |
// Custom amount is enabled — enforce the configured min/max (0 = none). |
| 2109 |
$min = isset( $multi_choice_config['custom_amount_min'] ) && is_numeric( $multi_choice_config['custom_amount_min'] ) |
| 2110 |
? (float) $multi_choice_config['custom_amount_min'] |
| 2111 |
: 0.0; |
| 2112 |
$max = isset( $multi_choice_config['custom_amount_max'] ) && is_numeric( $multi_choice_config['custom_amount_max'] ) |
| 2113 |
? (float) $multi_choice_config['custom_amount_max'] |
| 2114 |
: 0.0; |
| 2115 |
|
| 2116 |
if ( $min > 0 && $amount < $min - $epsilon ) { |
| 2117 |
return [ |
| 2118 |
'valid' => false, |
| 2119 |
/* translators: %s: minimum amount with currency */ |
| 2120 |
'message' => sprintf( __( 'Payment amount must be at least %s.', 'suredonation' ), self::format_amount( $min, $currency ) ), |
| 2121 |
]; |
| 2122 |
} |
| 2123 |
|
| 2124 |
if ( $max > 0 && $amount > $max + $epsilon ) { |
| 2125 |
return [ |
| 2126 |
'valid' => false, |
| 2127 |
/* translators: %s: maximum amount with currency */ |
| 2128 |
'message' => sprintf( __( 'Payment amount cannot exceed %s.', 'suredonation' ), self::format_amount( $max, $currency ) ), |
| 2129 |
]; |
| 2130 |
} |
| 2131 |
|
| 2132 |
// Validation passed for donation-amount field. |
| 2133 |
return null; |
| 2134 |
} |
| 2135 |
|
| 2136 |
/** |
| 2137 |
* Get block configuration by block name and slug. |
| 2138 |
* |
| 2139 |
* @param array<mixed> $block_config All block configurations. |
| 2140 |
* @param string $block_name Block name to search for. |
| 2141 |
* @param string $slug Slug to match. |
| 2142 |
* @return array<string, mixed>|null Block configuration if found, null otherwise. |
| 2143 |
* @since 0.0.1 |
| 2144 |
*/ |
| 2145 |
private static function get_block_config_by_name_and_slug( $block_config, $block_name, $slug ) { |
| 2146 |
foreach ( $block_config as $config ) { |
| 2147 |
if ( empty( $config ) || ! is_array( $config ) ) { |
| 2148 |
continue; |
| 2149 |
} |
| 2150 |
|
| 2151 |
if ( isset( $config['slug'] ) && $config['slug'] === $slug && isset( $config['block_name'] ) && $config['block_name'] === $block_name ) { |
| 2152 |
return $config; |
| 2153 |
} |
| 2154 |
} |
| 2155 |
return null; |
| 2156 |
} |
| 2157 |
} |
| 2158 |
|
