← All changes | backend/src/Hooks/ImageProxy.php +29 -3 0.6.0 → 1.5.5.1 View file →

		@@ -17,16 +17,20 @@
17	17	);
18	18	}
19	19
20	20	public function render_image() {
21		- $url = urldecode( $_GET['fl_asst_image_proxy'] );
22		- $url = str_replace( '?url=', '', $url );
	21	+ if ( ! isset( $_GET['fl_asst_image_proxy'] ) && ! isset( $_GET['url'] ) ) {
	22	+ return;
	23	+ }
23	24
	25	+ $url = esc_url_raw( $_GET['url'] );
	26	+ $url = urldecode( $url );
	27	+
24	28	if ( 0 !== strpos( $url, 'http' ) ) {
25	29	return;
26	30	}
27	31
28		- $response = wp_remote_get( $url );
	32	+ $response = wp_safe_remote_get( $url );
29	33
30	34	if ( is_wp_error( $response ) ) {
31	35	return;
32	36	}
		@@ -33,8 +37,19 @@
33	37
34	38	$body = wp_remote_retrieve_body( $response );
35	39	$headers = wp_remote_retrieve_headers( $response );
36	40
	41	+ // validate image
	42	+ $filesystem = self::filesystem();
	43	+ $tmpfile = tempnam( '/tmp', 'assistant' );
	44	+ $filesystem->put_contents( $tmpfile, $body );
	45	+ $validimage = wp_get_image_mime( $tmpfile );
	46	+ $filesystem->delete( $tmpfile );
	47	+
	48	+ if ( ! $validimage ) {
	49	+ return false;
	50	+ }
	51	+
37	52	if ( ! isset( $headers['content-type'] ) ) {
38	53	return;
39	54	} elseif ( 0 !== strpos( $headers['content-type'], 'image/' ) ) {
40	55	return;
		@@ -42,6 +57,17 @@
42	57
43	58	header( 'Content-type: ' . $headers['content-type'] );
44	59	echo $body;
45	60	die();
	61	+ }
	62	+
	63	+ private function filesystem() {
	64	+ global $wp_filesystem;
	65	+
	66	+ if ( is_null( $wp_filesystem ) ) {
	67	+ require_once ABSPATH . '/wp-admin/includes/file.php';
	68	+ WP_Filesystem();
	69	+ }
	70	+
	71	+ return $wp_filesystem;
46	72	}
47	73	}