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<?php |
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/** |
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* Secure WPSight API Handler. |
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* |
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* Hardened version of the original WPSight_API class. |
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* |
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* @package WPCasa |
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* @since 1.0.0 |
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* @updated 1.4.2 |
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*/ |
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|
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// Exit if accessed directly |
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if ( ! defined( 'ABSPATH' ) ) exit; |
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|
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class WPSight_API { |
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|
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/** |
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* Constructor. |
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*/ |
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public function __construct() { |
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// Ensure query var is registered early. |
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add_filter( 'query_vars', array( $this, 'add_query_vars' ), 0 ); |
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|
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// Register API request handler. |
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add_action( 'parse_request', array( $this, 'api_requests' ), 0 ); |
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} |
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|
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/** |
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* Register custom query vars. |
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* |
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* @param array $vars List of public query vars. |
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* @return array |
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*/ |
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public function add_query_vars( $vars ) { |
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$vars[] = 'wpsight-api'; |
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return $vars; |
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} |
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|
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/** |
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* Securely handle API requests. |
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* |
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* @return void |
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*/ |
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public function api_requests() { |
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global $wp; |
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|
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// 1) Preferred getter. |
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$raw = get_query_var( 'wpsight-api' ); |
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|
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// 2) Fallback: directly from $wp->query_vars. |
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if ( empty( $raw ) && isset( $wp->query_vars['wpsight-api'] ) ) { |
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$raw = $wp->query_vars['wpsight-api']; |
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} |
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|
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// 3) Last resort: direct $_GET. |
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if ( empty( $raw ) && ! empty( $_GET['wpsight-api'] ) ) { |
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$raw = sanitize_text_field( wp_unslash( $_GET['wpsight-api'] ) ); |
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} |
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|
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// No request found → exit early. |
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if ( empty( $raw ) ) { |
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return; |
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} |
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|
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// Sanitize to a valid key. |
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$api = sanitize_key( $raw ); |
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|
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if ( empty( $api ) ) { |
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return; |
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} |
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|
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/** |
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* Build allow-list of allowed API endpoints. |
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* |
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* IMPORTANT: Replace or extend this list in your theme or plugin |
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* using the 'wpsight_api_allowed_endpoints' filter. |
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* |
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* Example: |
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* |
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* add_filter( 'wpsight_api_allowed_endpoints', function( $allowed ) { |
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* $allowed['ping'] = array( 'class' => null ); |
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* return $allowed; |
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* } ); |
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*/ |
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$allowed = apply_filters( |
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'wpsight_api_allowed_endpoints', |
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array() |
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); |
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|
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// If API is not allowed, block access. |
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if ( ! isset( $allowed[ $api ] ) ) { |
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wp_die( |
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sprintf( |
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/* translators: %s: API endpoint slug */ |
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esc_html__( 'Endpoint "%s" not allowed.', 'wpcasa' ), |
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esc_html( $api ) |
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), |
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esc_html__( 'Forbidden', 'wpcasa' ), |
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array( 'response' => 403 ) |
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); |
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} |
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|
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// Start output buffering. |
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ob_start(); |
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|
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// Optional: safe class instantiation if explicitly allowed. |
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if ( ! empty( $allowed[ $api ]['class'] ) && class_exists( $allowed[ $api ]['class'] ) ) { |
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new $allowed[ $api ]['class'](); |
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} |
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|
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/** |
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* Trigger API action hook. |
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* |
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* Example usage: |
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* add_action( 'wpsight_api_ping', function() { |
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* echo 'pong'; |
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* } ); |
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*/ |
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do_action( 'wpsight_api_' . $api ); |
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|
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// In development mode, allow buffer output for easier testing. |
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if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
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ob_end_flush(); |
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} else { |
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ob_end_clean(); |
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} |
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|
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// Maintain old behaviour for backward compatibility. |
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die( '1' ); |
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} |
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} |
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|
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// Instantiate the class. |
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new WPSight_API(); |
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|
