| 1 |
<?php |
| 2 |
/** |
| 3 |
* Adds media-related functionality for client-side media processing. |
| 4 |
* |
| 5 |
* This file is structured in two tiers: |
| 6 |
* |
| 7 |
* 1. HEIC infrastructure — loaded whenever the feature filter is enabled. |
| 8 |
* Browsers like Safari can decode HEIC via createImageBitmap() even |
| 9 |
* without VIPS/SharedArrayBuffer, so HEIC MIME types, the custom REST |
| 10 |
* controller, and REST field/index registrations are always needed. |
| 11 |
* |
| 12 |
* 2. Full VIPS/WASM processing — loaded only when the feature filter is |
| 13 |
* enabled AND requires cross-origin isolation (DIP) at runtime. |
| 14 |
* |
| 15 |
* @package gutenberg |
| 16 |
*/ |
| 17 |
|
| 18 |
if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
| 19 |
return; |
| 20 |
} |
| 21 |
|
| 22 |
// Animated GIF → video: clean up the sideloaded companion video and |
| 23 |
// poster when their GIF attachment is deleted. The GIF→video swap itself |
| 24 |
// happens in the editor (the converted block is a real core/video), so no |
| 25 |
// render-time filtering is needed. |
| 26 |
require_once __DIR__ . '/animated-gif-to-video.php'; |
| 27 |
|
| 28 |
// ── Tier 1: HEIC infrastructure (always loaded) ───────────────────── |
| 29 |
|
| 30 |
/** |
| 31 |
* Registers HEIC/HEIF as allowed upload MIME types. |
| 32 |
* |
| 33 |
* HEIC images can be decoded in the browser (via canvas/VideoDecoder). |
| 34 |
* Registering these MIME types ensures the file picker's accept attribute |
| 35 |
* includes them, preventing macOS from silently converting HEIC to JPEG |
| 36 |
* on selection. |
| 37 |
* |
| 38 |
* @param array $mimes Allowed MIME types (extension => type). |
| 39 |
* @return array Modified MIME types. |
| 40 |
*/ |
| 41 |
function gutenberg_add_heic_upload_mimes( array $mimes ): array { |
| 42 |
$mimes['heic'] = 'image/heic'; |
| 43 |
$mimes['heif'] = 'image/heif'; |
| 44 |
return $mimes; |
| 45 |
} |
| 46 |
|
| 47 |
add_filter( 'upload_mimes', 'gutenberg_add_heic_upload_mimes' ); |
| 48 |
|
| 49 |
/** |
| 50 |
* Overrides the REST controller for the attachment post type. |
| 51 |
* |
| 52 |
* @param array $args Array of arguments for registering a post type. |
| 53 |
* See the register_post_type() function for accepted arguments. |
| 54 |
* @param string $post_type Post type key. |
| 55 |
*/ |
| 56 |
function gutenberg_filter_attachment_post_type_args( array $args, string $post_type ): array { |
| 57 |
if ( 'attachment' === $post_type ) { |
| 58 |
require_once __DIR__ . '/class-gutenberg-rest-attachments-controller.php'; |
| 59 |
|
| 60 |
$args['rest_controller_class'] = Gutenberg_REST_Attachments_Controller::class; |
| 61 |
} |
| 62 |
|
| 63 |
return $args; |
| 64 |
} |
| 65 |
|
| 66 |
add_filter( 'register_post_type_args', 'gutenberg_filter_attachment_post_type_args', 10, 2 ); |
| 67 |
|
| 68 |
/** |
| 69 |
* Registers additional REST fields for attachments. |
| 70 |
*/ |
| 71 |
function gutenberg_media_processing_register_rest_fields(): void { |
| 72 |
register_rest_field( |
| 73 |
'attachment', |
| 74 |
'filename', |
| 75 |
array( |
| 76 |
'schema' => array( |
| 77 |
'description' => __( 'Original attachment file name', 'gutenberg' ), |
| 78 |
'type' => 'string', |
| 79 |
'context' => array( 'view', 'edit' ), |
| 80 |
), |
| 81 |
'get_callback' => 'gutenberg_rest_get_attachment_filename', |
| 82 |
) |
| 83 |
); |
| 84 |
|
| 85 |
register_rest_field( |
| 86 |
'attachment', |
| 87 |
'filesize', |
| 88 |
array( |
| 89 |
'schema' => array( |
| 90 |
'description' => __( 'Attachment file size', 'gutenberg' ), |
| 91 |
'type' => 'number', |
| 92 |
'context' => array( 'view', 'edit' ), |
| 93 |
), |
| 94 |
'get_callback' => 'gutenberg_rest_get_attachment_filesize', |
| 95 |
) |
| 96 |
); |
| 97 |
} |
| 98 |
|
| 99 |
add_action( 'rest_api_init', 'gutenberg_media_processing_register_rest_fields' ); |
| 100 |
|
| 101 |
/** |
| 102 |
* Returns the attachment's original file name. |
| 103 |
* |
| 104 |
* @param array $post Post data. |
| 105 |
* @return string|null Attachment file name. |
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*/ |
| 107 |
function gutenberg_rest_get_attachment_filename( array $post ): ?string { |
| 108 |
$path = wp_get_original_image_path( $post['id'] ); |
| 109 |
|
| 110 |
if ( $path ) { |
| 111 |
return basename( $path ); |
| 112 |
} |
| 113 |
|
| 114 |
$path = get_attached_file( $post['id'] ); |
| 115 |
|
| 116 |
if ( $path ) { |
| 117 |
return basename( $path ); |
| 118 |
} |
| 119 |
|
| 120 |
return null; |
| 121 |
} |
| 122 |
|
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/** |
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* Returns the attachment's file size in bytes. |
| 125 |
* |
| 126 |
* @param array $post Post data. |
| 127 |
* @return int|null Attachment file size. |
| 128 |
*/ |
| 129 |
function gutenberg_rest_get_attachment_filesize( array $post ): ?int { |
| 130 |
$attachment_id = $post['id']; |
| 131 |
|
| 132 |
$meta = wp_get_attachment_metadata( $attachment_id ); |
| 133 |
|
| 134 |
if ( isset( $meta['filesize'] ) ) { |
| 135 |
return $meta['filesize']; |
| 136 |
} |
| 137 |
|
| 138 |
$original_path = wp_get_original_image_path( $attachment_id ); |
| 139 |
$attached_file = $original_path ? $original_path : get_attached_file( $attachment_id ); |
| 140 |
|
| 141 |
if ( is_string( $attached_file ) && file_exists( $attached_file ) ) { |
| 142 |
return wp_filesize( $attached_file ); |
| 143 |
} |
| 144 |
|
| 145 |
return null; |
| 146 |
} |
| 147 |
|
| 148 |
/** |
| 149 |
* Returns a list of all available image sizes. |
| 150 |
* |
| 151 |
* @return array Existing image sizes. |
| 152 |
*/ |
| 153 |
function gutenberg_get_all_image_sizes(): array { |
| 154 |
$sizes = wp_get_registered_image_subsizes(); |
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|
| 156 |
foreach ( $sizes as $name => &$size ) { |
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$size['height'] = (int) $size['height']; |
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$size['width'] = (int) $size['width']; |
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$size['name'] = $name; |
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} |
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unset( $size ); |
| 162 |
|
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return $sizes; |
| 164 |
} |
| 165 |
|
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/** |
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* Filters the REST API root index data to add custom settings. |
| 168 |
* |
| 169 |
* @param WP_REST_Response $response Response data. |
| 170 |
*/ |
| 171 |
function gutenberg_media_processing_filter_rest_index( WP_REST_Response $response ) { |
| 172 |
/** This filter is documented in wp-admin/includes/image.php */ |
| 173 |
$image_size_threshold = (int) apply_filters( 'big_image_size_threshold', 2560, array( 0, 0 ), '', 0 ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
| 174 |
|
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/** This filter is documented in wp-includes/class-wp-image-editor-imagick.php */ |
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$image_strip_meta = (bool) apply_filters( 'image_strip_meta', true ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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|
| 178 |
/* |
| 179 |
* On the server, this filter receives the decoded image's actual bit depth. |
| 180 |
* The client path never decodes the image on the server, so the filter is |
| 181 |
* applied with 16 (the maximum depth vips can produce) as both the value |
| 182 |
* and the current depth. The client caps its output bit depth at the |
| 183 |
* filtered value, so a plugin lowering it (e.g. to 8) takes effect on |
| 184 |
* client-generated images too. |
| 185 |
*/ |
| 186 |
/** This filter is documented in wp-includes/class-wp-image-editor-imagick.php */ |
| 187 |
$image_max_bit_depth = (int) apply_filters( 'image_max_bit_depth', 16, 16 ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
| 188 |
|
| 189 |
if ( current_user_can( 'upload_files' ) ) { |
| 190 |
$response->data['image_sizes'] = gutenberg_get_all_image_sizes(); |
| 191 |
$response->data['image_size_threshold'] = $image_size_threshold; |
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$response->data['image_strip_meta'] = $image_strip_meta; |
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$response->data['image_max_bit_depth'] = $image_max_bit_depth; |
| 194 |
} |
| 195 |
|
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return $response; |
| 197 |
} |
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|
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add_filter( 'rest_index', 'gutenberg_media_processing_filter_rest_index' ); |
| 200 |
|
| 201 |
/** |
| 202 |
* Sets a global JS variable to indicate that client-side media processing is enabled. |
| 203 |
* |
| 204 |
* The flag gates both processing modes: the full VIPS/WASM pipeline (browsers |
| 205 |
* that pass feature detection) and the HEIC canvas fallback used by browsers |
| 206 |
* such as Safari that can decode HEIC via createImageBitmap() but lack |
| 207 |
* SharedArrayBuffer support. The browser-capability check happens client-side. |
| 208 |
*/ |
| 209 |
function gutenberg_set_client_side_media_processing_flag() { |
| 210 |
// Re-check the filter at action time, since other plugins (loaded after Gutenberg) |
| 211 |
// may have added a filter to disable client-side media processing. |
| 212 |
if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
| 213 |
return; |
| 214 |
} |
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wp_add_inline_script( 'wp-block-editor', 'window.__clientSideMediaProcessing = true', 'before' ); |
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} |
| 217 |
add_action( 'admin_init', 'gutenberg_set_client_side_media_processing_flag' ); |
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|
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/** |
| 220 |
* Deletes the source-format companion file when its attachment is deleted. |
| 221 |
* |
| 222 |
* When the client-side media flow sideloads a source-format original (such as |
| 223 |
* a HEIC file) alongside a web-viewable derivative, the original's filename is |
| 224 |
* recorded in the 'source_image' metadata key. WordPress only tracks |
| 225 |
* 'original_image' in wp_delete_attachment_files(), so without this hook the |
| 226 |
* companion file would linger on disk after the attachment is deleted. |
| 227 |
* |
| 228 |
* @param int $post_id Attachment ID being deleted. |
| 229 |
* @return bool Whether a companion file was deleted. |
| 230 |
*/ |
| 231 |
function gutenberg_delete_heic_companion_file( int $post_id ): bool { |
| 232 |
$metadata = wp_get_attachment_metadata( $post_id, true ); |
| 233 |
|
| 234 |
$source_image = $metadata['source_image'] ?? null; |
| 235 |
if ( ! is_string( $source_image ) || '' === $source_image ) { |
| 236 |
return false; |
| 237 |
} |
| 238 |
|
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$attached_file = get_attached_file( $post_id, true ); |
| 240 |
|
| 241 |
if ( ! $attached_file ) { |
| 242 |
return false; |
| 243 |
} |
| 244 |
|
| 245 |
$uploads = wp_get_upload_dir(); |
| 246 |
|
| 247 |
if ( empty( $uploads['basedir'] ) ) { |
| 248 |
return false; |
| 249 |
} |
| 250 |
|
| 251 |
$companion_path = path_join( dirname( $attached_file ), wp_basename( $source_image ) ); |
| 252 |
|
| 253 |
if ( ! file_exists( $companion_path ) ) { |
| 254 |
return false; |
| 255 |
} |
| 256 |
|
| 257 |
return wp_delete_file_from_directory( $companion_path, $uploads['basedir'] ); |
| 258 |
} |
| 259 |
|
| 260 |
add_action( 'delete_attachment', 'gutenberg_delete_heic_companion_file' ); |
| 261 |
|
| 262 |
// ── Tier 2: Full client-side processing (VIPS/WASM) ───────────────── |
| 263 |
// Everything below requires cross-origin isolation (Document-Isolation-Policy) |
| 264 |
// and SharedArrayBuffer support, which is only available in Chromium 137+. |
| 265 |
|
| 266 |
/** |
| 267 |
* Filters the list of rewrite rules formatted for output to an .htaccess file. |
| 268 |
* |
| 269 |
* Adds support for serving wasm-vips locally. |
| 270 |
* |
| 271 |
* @param string $rules mod_rewrite Rewrite rules formatted for .htaccess. |
| 272 |
* @return string Filtered rewrite rules. |
| 273 |
*/ |
| 274 |
function gutenberg_filter_mod_rewrite_rules( string $rules ): string { |
| 275 |
$rules .= "\n# BEGIN Gutenberg client-side media processing\n" . |
| 276 |
"AddType application/wasm wasm\n" . |
| 277 |
"# END Gutenberg client-side media processing\n"; |
| 278 |
|
| 279 |
return $rules; |
| 280 |
} |
| 281 |
|
| 282 |
add_filter( 'mod_rewrite_rules', 'gutenberg_filter_mod_rewrite_rules' ); |
| 283 |
|
| 284 |
/** |
| 285 |
* Returns the major Chromium version from the current request's User-Agent. |
| 286 |
* |
| 287 |
* Matches all Chromium-based browsers (Chrome, Edge, Opera, Brave). |
| 288 |
* |
| 289 |
* @return int|null The major Chromium version, or null if not a Chromium browser. |
| 290 |
*/ |
| 291 |
function gutenberg_get_chromium_major_version(): ?int { |
| 292 |
if ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) { |
| 293 |
return null; |
| 294 |
} |
| 295 |
if ( preg_match( '/Chrome\/(\d+)/', $_SERVER['HTTP_USER_AGENT'], $matches ) ) { |
| 296 |
return (int) $matches[1]; |
| 297 |
} |
| 298 |
return null; |
| 299 |
} |
| 300 |
|
| 301 |
/** |
| 302 |
* Enables cross-origin isolation in the block editor. |
| 303 |
* |
| 304 |
* Required for enabling SharedArrayBuffer for WebAssembly-based |
| 305 |
* media processing in the editor. Uses Document-Isolation-Policy |
| 306 |
* on supported browsers (Chromium 137+). |
| 307 |
*/ |
| 308 |
function gutenberg_set_up_cross_origin_isolation() { |
| 309 |
// Re-check the filter at action time, since other plugins (loaded after Gutenberg) |
| 310 |
// may have added a filter to disable client-side media processing. |
| 311 |
if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
| 312 |
return; |
| 313 |
} |
| 314 |
|
| 315 |
$screen = get_current_screen(); |
| 316 |
|
| 317 |
if ( ! $screen ) { |
| 318 |
return; |
| 319 |
} |
| 320 |
|
| 321 |
if ( ! $screen->is_block_editor() && 'site-editor' !== $screen->id && ! ( 'widgets' === $screen->id && wp_use_widgets_block_editor() ) ) { |
| 322 |
return; |
| 323 |
} |
| 324 |
|
| 325 |
// Skip when rendering the classic-theme home route, which shows the site |
| 326 |
// preview in an iframe and must reach its `contentDocument` to neutralize |
| 327 |
// interactive elements — DIP would block that. |
| 328 |
if ( 'site-editor' === $screen->id && ! wp_is_block_theme() && ( ! isset( $_GET['p'] ) || '/' === $_GET['p'] ) ) { |
| 329 |
return; |
| 330 |
} |
| 331 |
|
| 332 |
// Skip when a third-party page builder overrides the block editor. |
| 333 |
// DIP isolates the document into its own agent cluster, |
| 334 |
// which blocks same-origin iframe access that these editors rely on. |
| 335 |
// phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 336 |
if ( isset( $_GET['action'] ) && 'edit' !== $_GET['action'] ) { |
| 337 |
return; |
| 338 |
} |
| 339 |
|
| 340 |
$user_id = get_current_user_id(); |
| 341 |
if ( ! $user_id ) { |
| 342 |
return; |
| 343 |
} |
| 344 |
|
| 345 |
// Cross-origin isolation is not needed if users can't upload files anyway. |
| 346 |
if ( ! user_can( $user_id, 'upload_files' ) ) { |
| 347 |
return; |
| 348 |
} |
| 349 |
|
| 350 |
gutenberg_start_cross_origin_isolation_output_buffer(); |
| 351 |
} |
| 352 |
|
| 353 |
add_action( 'load-post.php', 'gutenberg_set_up_cross_origin_isolation' ); |
| 354 |
add_action( 'load-post-new.php', 'gutenberg_set_up_cross_origin_isolation' ); |
| 355 |
add_action( 'load-site-editor.php', 'gutenberg_set_up_cross_origin_isolation' ); |
| 356 |
add_action( 'load-widgets.php', 'gutenberg_set_up_cross_origin_isolation' ); |
| 357 |
|
| 358 |
// Remove core's COEP/COOP-based cross-origin isolation in favor of |
| 359 |
// Gutenberg's DIP-based approach, which also skips third-party editors. |
| 360 |
remove_action( 'load-post.php', 'wp_set_up_cross_origin_isolation' ); |
| 361 |
remove_action( 'load-post-new.php', 'wp_set_up_cross_origin_isolation' ); |
| 362 |
remove_action( 'load-site-editor.php', 'wp_set_up_cross_origin_isolation' ); |
| 363 |
remove_action( 'load-widgets.php', 'wp_set_up_cross_origin_isolation' ); |
| 364 |
|
| 365 |
/** |
| 366 |
* Sends the Document-Isolation-Policy header for cross-origin isolation. |
| 367 |
* |
| 368 |
* Uses an output buffer to add crossorigin="anonymous" where needed. |
| 369 |
*/ |
| 370 |
function gutenberg_start_cross_origin_isolation_output_buffer(): void { |
| 371 |
$chromium_version = gutenberg_get_chromium_major_version(); |
| 372 |
|
| 373 |
/** |
| 374 |
* Filters whether to use Document-Isolation-Policy for cross-origin isolation. |
| 375 |
* |
| 376 |
* Document-Isolation-Policy provides per-document cross-origin isolation |
| 377 |
* without affecting other iframes on the page, avoiding breakage of plugins |
| 378 |
* whose iframes lose credentials/DOM access. |
| 379 |
* |
| 380 |
* @since 21.8.0 |
| 381 |
* |
| 382 |
* @param bool $use_dip Whether DIP is supported and should be used. |
| 383 |
*/ |
| 384 |
$use_dip = apply_filters( |
| 385 |
'gutenberg_use_document_isolation_policy', |
| 386 |
null !== $chromium_version && $chromium_version >= 137 |
| 387 |
); |
| 388 |
|
| 389 |
if ( ! $use_dip ) { |
| 390 |
return; |
| 391 |
} |
| 392 |
|
| 393 |
ob_start( |
| 394 |
function ( string $output ): string { |
| 395 |
header( 'Document-Isolation-Policy: isolate-and-credentialless' ); |
| 396 |
|
| 397 |
return gutenberg_add_crossorigin_attributes( $output ); |
| 398 |
} |
| 399 |
); |
| 400 |
} |
| 401 |
|
| 402 |
/** |
| 403 |
* Adds crossorigin="anonymous" to relevant tags in the given HTML string. |
| 404 |
* |
| 405 |
* @param string $html HTML input. |
| 406 |
* |
| 407 |
* @return string Modified HTML. |
| 408 |
*/ |
| 409 |
function gutenberg_add_crossorigin_attributes( string $html ): string { |
| 410 |
$site_url = site_url(); |
| 411 |
|
| 412 |
$processor = new WP_HTML_Tag_Processor( $html ); |
| 413 |
|
| 414 |
// See https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin. |
| 415 |
$tags = array( |
| 416 |
'AUDIO' => 'src', |
| 417 |
'LINK' => 'href', |
| 418 |
'SCRIPT' => 'src', |
| 419 |
'VIDEO' => 'src', |
| 420 |
'SOURCE' => 'src', |
| 421 |
); |
| 422 |
|
| 423 |
$tag_names = array_keys( $tags ); |
| 424 |
|
| 425 |
while ( $processor->next_tag() ) { |
| 426 |
$tag = $processor->get_tag(); |
| 427 |
|
| 428 |
if ( ! in_array( $tag, $tag_names, true ) ) { |
| 429 |
continue; |
| 430 |
} |
| 431 |
|
| 432 |
if ( 'AUDIO' === $tag || 'VIDEO' === $tag ) { |
| 433 |
$processor->set_bookmark( 'audio-video-parent' ); |
| 434 |
} |
| 435 |
|
| 436 |
$processor->set_bookmark( 'resume' ); |
| 437 |
|
| 438 |
$sought = false; |
| 439 |
|
| 440 |
$crossorigin = $processor->get_attribute( 'crossorigin' ); |
| 441 |
|
| 442 |
$url = $processor->get_attribute( $tags[ $tag ] ); |
| 443 |
|
| 444 |
if ( is_string( $url ) && ! str_starts_with( $url, $site_url ) && ! str_starts_with( $url, '/' ) && ! is_string( $crossorigin ) ) { |
| 445 |
if ( 'SOURCE' === $tag ) { |
| 446 |
$sought = $processor->seek( 'audio-video-parent' ); |
| 447 |
|
| 448 |
if ( $sought ) { |
| 449 |
$processor->set_attribute( 'crossorigin', 'anonymous' ); |
| 450 |
} |
| 451 |
} else { |
| 452 |
$processor->set_attribute( 'crossorigin', 'anonymous' ); |
| 453 |
} |
| 454 |
|
| 455 |
if ( $sought ) { |
| 456 |
$processor->seek( 'resume' ); |
| 457 |
$processor->release_bookmark( 'audio-video-parent' ); |
| 458 |
} |
| 459 |
} |
| 460 |
} |
| 461 |
|
| 462 |
return $processor->get_updated_html(); |
| 463 |
} |
| 464 |
|
| 465 |
/** |
| 466 |
* Overrides templates from wp_print_media_templates with custom ones. |
| 467 |
* |
| 468 |
* Adds `crossorigin` attribute to all tags that |
| 469 |
* could have assets loaded from a different domain. |
| 470 |
*/ |
| 471 |
function gutenberg_override_media_templates(): void { |
| 472 |
remove_action( 'admin_footer', 'wp_print_media_templates' ); |
| 473 |
add_action( |
| 474 |
'admin_footer', |
| 475 |
static function (): void { |
| 476 |
ob_start(); |
| 477 |
wp_print_media_templates(); |
| 478 |
$html = (string) ob_get_clean(); |
| 479 |
|
| 480 |
$tags = array( |
| 481 |
'audio', |
| 482 |
'img', |
| 483 |
'video', |
| 484 |
); |
| 485 |
|
| 486 |
foreach ( $tags as $tag ) { |
| 487 |
$html = (string) str_replace( "<$tag", "<$tag crossorigin=\"anonymous\"", $html ); |
| 488 |
} |
| 489 |
|
| 490 |
echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 491 |
} |
| 492 |
); |
| 493 |
} |
| 494 |
|
| 495 |
add_action( 'wp_enqueue_media', 'gutenberg_override_media_templates' ); |
| 496 |
|
