51 lines
1.4 KiB
PHP
51 lines
1.4 KiB
PHP
<?php
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namespace Automattic\Jetpack_Boost\Modules\Image_Guide;
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use Automattic\Jetpack\Image_CDN\Image_CDN_Core;
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/**
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* Add an ajax endpoint to proxy external CSS files.
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*/
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class Image_Guide_Proxy {
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const NONCE_ACTION = 'jb-ig-proxy-nonce';
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public static function init() {
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add_action( 'wp_ajax_boost_proxy_ig', array( __CLASS__, 'handle_proxy' ) );
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}
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/**
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* AJAX handler to handle proxying of external image resources.
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*
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* @return never
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*/
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public static function handle_proxy() {
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// Verify valid nonce.
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if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( sanitize_key( $_POST['nonce'] ), self::NONCE_ACTION ) ) {
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wp_send_json_error( 'bad nonce', 400 );
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}
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// Make sure currently logged in as admin.
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if ( ! current_user_can( 'manage_options' ) ) {
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wp_send_json_error( 'not admin', 400 );
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}
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// Validate URL and fetch.
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$proxy_url = filter_var( wp_unslash( isset( $_POST['proxy_url'] ) ? $_POST['proxy_url'] : null ), FILTER_VALIDATE_URL );
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if ( ! wp_http_validate_url( $proxy_url ) ) {
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wp_send_json_error( 'Invalid URL', 400 );
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}
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$photon_url = Image_CDN_Core::cdn_url( $proxy_url );
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if ( ! Image_CDN_Core::is_cdn_url( $proxy_url ) ) {
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wp_send_json_error( 'Failed to proxy the image.', 400 );
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}
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$response = wp_safe_remote_get( $photon_url );
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if ( is_wp_error( $response ) ) {
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wp_send_json_error( 'error', 400 );
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}
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wp_send_json_success( iterator_to_array( wp_remote_retrieve_headers( $response ) ) );
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}
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}
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