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1 <?php 2 /** 3 * REST API: WP_REST_Themes_Controller class 4 * 5 * @package WordPress 6 * @subpackage REST_API 7 * @since 5.0.0 8 */ 9 10 /** 11 * Core class used to manage themes via the REST API. 12 * 13 * @since 5.0.0 14 * 15 * @see WP_REST_Controller 16 */ 17 class WP_REST_Themes_Controller extends WP_REST_Controller { 18 19 /** 20 * Matches theme's directory: `/themes/<subdirectory>/<theme>/` or `/themes/<theme>/`. 21 * Excludes invalid directory name characters: `/:<>*?"|`. 22 */ 23 const PATTERN = '[^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?'; 24 25 /** 26 * Constructor. 27 * 28 * @since 5.0.0 29 */ 30 public function __construct() { 31 $this->namespace = 'wp/v2'; 32 $this->rest_base = 'themes'; 33 } 34 35 /** 36 * Registers the routes for themes. 37 * 38 * @since 5.0.0 39 * 40 * @see register_rest_route() 41 */ 42 public function register_routes() { 43 register_rest_route( 44 $this->namespace, 45 '/' . $this->rest_base, 46 array( 47 array( 48 'methods' => WP_REST_Server::READABLE, 49 'callback' => array( $this, 'get_items' ), 50 'permission_callback' => array( $this, 'get_items_permissions_check' ), 51 'args' => $this->get_collection_params(), 52 ), 53 'schema' => array( $this, 'get_item_schema' ), 54 ) 55 ); 56 57 register_rest_route( 58 $this->namespace, 59 sprintf( '/%s/(?P<stylesheet>%s)', $this->rest_base, self::PATTERN ), 60 array( 61 'args' => array( 62 'stylesheet' => array( 63 'description' => __( "The theme's stylesheet. This uniquely identifies the theme." ), 64 'type' => 'string', 65 'sanitize_callback' => array( $this, '_sanitize_stylesheet_callback' ), 66 ), 67 ), 68 array( 69 'methods' => WP_REST_Server::READABLE, 70 'callback' => array( $this, 'get_item' ), 71 'permission_callback' => array( $this, 'get_item_permissions_check' ), 72 ), 73 'schema' => array( $this, 'get_public_item_schema' ), 74 ) 75 ); 76 } 77 78 /** 79 * Sanitize the stylesheet to decode endpoint. 80 * 81 * @since 5.9.0 82 * 83 * @param string $stylesheet The stylesheet name. 84 * @return string Sanitized stylesheet. 85 */ 86 public function _sanitize_stylesheet_callback( $stylesheet ) { 87 return urldecode( $stylesheet ); 88 } 89 90 /** 91 * Checks if a given request has access to read the theme. 92 * 93 * @since 5.0.0 94 * 95 * @param WP_REST_Request $request Full details about the request. 96 * @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object. 97 */ 98 public function get_items_permissions_check( $request ) { 99 if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) { 100 return true; 101 } 102 103 $registered = $this->get_collection_params(); 104 if ( isset( $registered['status'], $request['status'] ) && is_array( $request['status'] ) && array( 'active' ) === $request['status'] ) { 105 return $this->check_read_active_theme_permission(); 106 } 107 108 return new WP_Error( 109 'rest_cannot_view_themes', 110 __( 'Sorry, you are not allowed to view themes.' ), 111 array( 'status' => rest_authorization_required_code() ) 112 ); 113 } 114 115 /** 116 * Checks if a given request has access to read the theme. 117 * 118 * @since 5.7.0 119 * 120 * @param WP_REST_Request $request Full details about the request. 121 * @return bool|WP_Error True if the request has read access for the item, otherwise WP_Error object. 122 */ 123 public function get_item_permissions_check( $request ) { 124 if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) { 125 return true; 126 } 127 128 $wp_theme = wp_get_theme( $request['stylesheet'] ); 129 $current_theme = wp_get_theme(); 130 131 if ( $this->is_same_theme( $wp_theme, $current_theme ) ) { 132 return $this->check_read_active_theme_permission(); 133 } 134 135 return new WP_Error( 136 'rest_cannot_view_themes', 137 __( 'Sorry, you are not allowed to view themes.' ), 138 array( 'status' => rest_authorization_required_code() ) 139 ); 140 } 141 142 /** 143 * Checks if a theme can be read. 144 * 145 * @since 5.7.0 146 * 147 * @return bool|WP_Error Whether the theme can be read. 148 */ 149 protected function check_read_active_theme_permission() { 150 if ( current_user_can( 'edit_posts' ) ) { 151 return true; 152 } 153 154 foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) { 155 if ( current_user_can( $post_type->cap->edit_posts ) ) { 156 return true; 157 } 158 } 159 160 return new WP_Error( 161 'rest_cannot_view_active_theme', 162 __( 'Sorry, you are not allowed to view the active theme.' ), 163 array( 'status' => rest_authorization_required_code() ) 164 ); 165 } 166 167 /** 168 * Retrieves a single theme. 169 * 170 * @since 5.7.0 171 * 172 * @param WP_REST_Request $request Full details about the request. 173 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 174 */ 175 public function get_item( $request ) { 176 $wp_theme = wp_get_theme( $request['stylesheet'] ); 177 if ( ! $wp_theme->exists() ) { 178 return new WP_Error( 179 'rest_theme_not_found', 180 __( 'Theme not found.' ), 181 array( 'status' => 404 ) 182 ); 183 } 184 $data = $this->prepare_item_for_response( $wp_theme, $request ); 185 186 return rest_ensure_response( $data ); 187 } 188 189 /** 190 * Retrieves a collection of themes. 191 * 192 * @since 5.0.0 193 * 194 * @param WP_REST_Request $request Full details about the request. 195 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 196 */ 197 public function get_items( $request ) { 198 $themes = array(); 199 200 $active_themes = wp_get_themes(); 201 $current_theme = wp_get_theme(); 202 $status = $request['status']; 203 204 foreach ( $active_themes as $theme_name => $theme ) { 205 $theme_status = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive'; 206 if ( is_array( $status ) && ! in_array( $theme_status, $status, true ) ) { 207 continue; 208 } 209 210 $prepared = $this->prepare_item_for_response( $theme, $request ); 211 $themes[] = $this->prepare_response_for_collection( $prepared ); 212 } 213 214 $response = rest_ensure_response( $themes ); 215 216 $response->header( 'X-WP-Total', count( $themes ) ); 217 $response->header( 'X-WP-TotalPages', 1 ); 218 219 return $response; 220 } 221 222 /** 223 * Prepares a single theme output for response. 224 * 225 * @since 5.0.0 226 * @since 5.9.0 Renamed `$theme` to `$item` to match parent class for PHP 8 named parameter support. 227 * 228 * @param WP_Theme $item Theme object. 229 * @param WP_REST_Request $request Request object. 230 * @return WP_REST_Response Response object. 231 */ 232 public function prepare_item_for_response( $item, $request ) { 233 // Restores the more descriptive, specific name for use within this method. 234 $theme = $item; 235 $data = array(); 236 $fields = $this->get_fields_for_response( $request ); 237 238 if ( rest_is_field_included( 'stylesheet', $fields ) ) { 239 $data['stylesheet'] = $theme->get_stylesheet(); 240 } 241 242 if ( rest_is_field_included( 'template', $fields ) ) { 243 /** 244 * Use the get_template() method, not the 'Template' header, for finding the template. 245 * The 'Template' header is only good for what was written in the style.css, while 246 * get_template() takes into account where WordPress actually located the theme and 247 * whether it is actually valid. 248 */ 249 $data['template'] = $theme->get_template(); 250 } 251 252 $plain_field_mappings = array( 253 'requires_php' => 'RequiresPHP', 254 'requires_wp' => 'RequiresWP', 255 'textdomain' => 'TextDomain', 256 'version' => 'Version', 257 ); 258 259 foreach ( $plain_field_mappings as $field => $header ) { 260 if ( rest_is_field_included( $field, $fields ) ) { 261 $data[ $field ] = $theme->get( $header ); 262 } 263 } 264 265 if ( rest_is_field_included( 'screenshot', $fields ) ) { 266 // Using $theme->get_screenshot() with no args to get absolute URL. 267 $data['screenshot'] = $theme->get_screenshot() ? $theme->get_screenshot() : ''; 268 } 269 270 $rich_field_mappings = array( 271 'author' => 'Author', 272 'author_uri' => 'AuthorURI', 273 'description' => 'Description', 274 'name' => 'Name', 275 'tags' => 'Tags', 276 'theme_uri' => 'ThemeURI', 277 ); 278 279 foreach ( $rich_field_mappings as $field => $header ) { 280 if ( rest_is_field_included( "{$field}.raw", $fields ) ) { 281 $data[ $field ]['raw'] = $theme->display( $header, false, true ); 282 } 283 284 if ( rest_is_field_included( "{$field}.rendered", $fields ) ) { 285 $data[ $field ]['rendered'] = $theme->display( $header ); 286 } 287 } 288 289 $current_theme = wp_get_theme(); 290 if ( rest_is_field_included( 'status', $fields ) ) { 291 $data['status'] = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive'; 292 } 293 294 if ( rest_is_field_included( 'theme_supports', $fields ) && $this->is_same_theme( $theme, $current_theme ) ) { 295 foreach ( get_registered_theme_features() as $feature => $config ) { 296 if ( ! is_array( $config['show_in_rest'] ) ) { 297 continue; 298 } 299 300 $name = $config['show_in_rest']['name']; 301 302 if ( ! rest_is_field_included( "theme_supports.{$name}", $fields ) ) { 303 continue; 304 } 305 306 if ( ! current_theme_supports( $feature ) ) { 307 $data['theme_supports'][ $name ] = $config['show_in_rest']['schema']['default']; 308 continue; 309 } 310 311 $support = get_theme_support( $feature ); 312 313 if ( isset( $config['show_in_rest']['prepare_callback'] ) ) { 314 $prepare = $config['show_in_rest']['prepare_callback']; 315 } else { 316 $prepare = array( $this, 'prepare_theme_support' ); 317 } 318 319 $prepared = $prepare( $support, $config, $feature, $request ); 320 321 if ( is_wp_error( $prepared ) ) { 322 continue; 323 } 324 325 $data['theme_supports'][ $name ] = $prepared; 326 } 327 } 328 329 $data = $this->add_additional_fields_to_object( $data, $request ); 330 331 // Wrap the data in a response object. 332 $response = rest_ensure_response( $data ); 333 334 $response->add_links( $this->prepare_links( $theme ) ); 335 336 if ( $theme->get_stylesheet() === wp_get_theme()->get_stylesheet() ) { 337 // This creates a record for the active theme if not existent. 338 $id = WP_Theme_JSON_Resolver::get_user_global_styles_post_id(); 339 } else { 340 $user_cpt = WP_Theme_JSON_Resolver::get_user_data_from_wp_global_styles( $theme ); 341 $id = isset( $user_cpt['ID'] ) ? $user_cpt['ID'] : null; 342 } 343 344 if ( $id ) { 345 $response->add_link( 346 'https://api.w.org/user-global-styles', 347 rest_url( 'wp/v2/global-styles/' . $id ) 348 ); 349 } 350 351 /** 352 * Filters theme data returned from the REST API. 353 * 354 * @since 5.0.0 355 * 356 * @param WP_REST_Response $response The response object. 357 * @param WP_Theme $theme Theme object used to create response. 358 * @param WP_REST_Request $request Request object. 359 */ 360 return apply_filters( 'rest_prepare_theme', $response, $theme, $request ); 361 } 362 363 /** 364 * Prepares links for the request. 365 * 366 * @since 5.7.0 367 * 368 * @param WP_Theme $theme Theme data. 369 * @return array Links for the given block type. 370 */ 371 protected function prepare_links( $theme ) { 372 return array( 373 'self' => array( 374 'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $theme->get_stylesheet() ) ), 375 ), 376 'collection' => array( 377 'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ), 378 ), 379 ); 380 } 381 382 /** 383 * Helper function to compare two themes. 384 * 385 * @since 5.7.0 386 * 387 * @param WP_Theme $theme_a First theme to compare. 388 * @param WP_Theme $theme_b Second theme to compare. 389 * @return bool 390 */ 391 protected function is_same_theme( $theme_a, $theme_b ) { 392 return $theme_a->get_stylesheet() === $theme_b->get_stylesheet(); 393 } 394 395 /** 396 * Prepares the theme support value for inclusion in the REST API response. 397 * 398 * @since 5.5.0 399 * 400 * @param mixed $support The raw value from get_theme_support(). 401 * @param array $args The feature's registration args. 402 * @param string $feature The feature name. 403 * @param WP_REST_Request $request The request object. 404 * @return mixed The prepared support value. 405 */ 406 protected function prepare_theme_support( $support, $args, $feature, $request ) { 407 $schema = $args['show_in_rest']['schema']; 408 409 if ( 'boolean' === $schema['type'] ) { 410 return true; 411 } 412 413 if ( is_array( $support ) && ! $args['variadic'] ) { 414 $support = $support[0]; 415 } 416 417 return rest_sanitize_value_from_schema( $support, $schema ); 418 } 419 420 /** 421 * Retrieves the theme's schema, conforming to JSON Schema. 422 * 423 * @since 5.0.0 424 * 425 * @return array Item schema data. 426 */ 427 public function get_item_schema() { 428 if ( $this->schema ) { 429 return $this->add_additional_fields_schema( $this->schema ); 430 } 431 432 $schema = array( 433 '$schema' => 'http://json-schema.org/draft-04/schema#', 434 'title' => 'theme', 435 'type' => 'object', 436 'properties' => array( 437 'stylesheet' => array( 438 'description' => __( 'The theme\'s stylesheet. This uniquely identifies the theme.' ), 439 'type' => 'string', 440 'readonly' => true, 441 ), 442 'template' => array( 443 'description' => __( 'The theme\'s template. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet.' ), 444 'type' => 'string', 445 'readonly' => true, 446 ), 447 'author' => array( 448 'description' => __( 'The theme author.' ), 449 'type' => 'object', 450 'readonly' => true, 451 'properties' => array( 452 'raw' => array( 453 'description' => __( 'The theme author\'s name, as found in the theme header.' ), 454 'type' => 'string', 455 ), 456 'rendered' => array( 457 'description' => __( 'HTML for the theme author, transformed for display.' ), 458 'type' => 'string', 459 ), 460 ), 461 ), 462 'author_uri' => array( 463 'description' => __( 'The website of the theme author.' ), 464 'type' => 'object', 465 'readonly' => true, 466 'properties' => array( 467 'raw' => array( 468 'description' => __( 'The website of the theme author, as found in the theme header.' ), 469 'type' => 'string', 470 'format' => 'uri', 471 ), 472 'rendered' => array( 473 'description' => __( 'The website of the theme author, transformed for display.' ), 474 'type' => 'string', 475 'format' => 'uri', 476 ), 477 ), 478 ), 479 'description' => array( 480 'description' => __( 'A description of the theme.' ), 481 'type' => 'object', 482 'readonly' => true, 483 'properties' => array( 484 'raw' => array( 485 'description' => __( 'The theme description, as found in the theme header.' ), 486 'type' => 'string', 487 ), 488 'rendered' => array( 489 'description' => __( 'The theme description, transformed for display.' ), 490 'type' => 'string', 491 ), 492 ), 493 ), 494 'name' => array( 495 'description' => __( 'The name of the theme.' ), 496 'type' => 'object', 497 'readonly' => true, 498 'properties' => array( 499 'raw' => array( 500 'description' => __( 'The theme name, as found in the theme header.' ), 501 'type' => 'string', 502 ), 503 'rendered' => array( 504 'description' => __( 'The theme name, transformed for display.' ), 505 'type' => 'string', 506 ), 507 ), 508 ), 509 'requires_php' => array( 510 'description' => __( 'The minimum PHP version required for the theme to work.' ), 511 'type' => 'string', 512 'readonly' => true, 513 ), 514 'requires_wp' => array( 515 'description' => __( 'The minimum WordPress version required for the theme to work.' ), 516 'type' => 'string', 517 'readonly' => true, 518 ), 519 'screenshot' => array( 520 'description' => __( 'The theme\'s screenshot URL.' ), 521 'type' => 'string', 522 'format' => 'uri', 523 'readonly' => true, 524 ), 525 'tags' => array( 526 'description' => __( 'Tags indicating styles and features of the theme.' ), 527 'type' => 'object', 528 'readonly' => true, 529 'properties' => array( 530 'raw' => array( 531 'description' => __( 'The theme tags, as found in the theme header.' ), 532 'type' => 'array', 533 'items' => array( 534 'type' => 'string', 535 ), 536 ), 537 'rendered' => array( 538 'description' => __( 'The theme tags, transformed for display.' ), 539 'type' => 'string', 540 ), 541 ), 542 ), 543 'textdomain' => array( 544 'description' => __( 'The theme\'s text domain.' ), 545 'type' => 'string', 546 'readonly' => true, 547 ), 548 'theme_supports' => array( 549 'description' => __( 'Features supported by this theme.' ), 550 'type' => 'object', 551 'readonly' => true, 552 'properties' => array(), 553 ), 554 'theme_uri' => array( 555 'description' => __( 'The URI of the theme\'s webpage.' ), 556 'type' => 'object', 557 'readonly' => true, 558 'properties' => array( 559 'raw' => array( 560 'description' => __( 'The URI of the theme\'s webpage, as found in the theme header.' ), 561 'type' => 'string', 562 'format' => 'uri', 563 ), 564 'rendered' => array( 565 'description' => __( 'The URI of the theme\'s webpage, transformed for display.' ), 566 'type' => 'string', 567 'format' => 'uri', 568 ), 569 ), 570 ), 571 'version' => array( 572 'description' => __( 'The theme\'s current version.' ), 573 'type' => 'string', 574 'readonly' => true, 575 ), 576 'status' => array( 577 'description' => __( 'A named status for the theme.' ), 578 'type' => 'string', 579 'enum' => array( 'inactive', 'active' ), 580 ), 581 ), 582 ); 583 584 foreach ( get_registered_theme_features() as $feature => $config ) { 585 if ( ! is_array( $config['show_in_rest'] ) ) { 586 continue; 587 } 588 589 $name = $config['show_in_rest']['name']; 590 591 $schema['properties']['theme_supports']['properties'][ $name ] = $config['show_in_rest']['schema']; 592 } 593 594 $this->schema = $schema; 595 596 return $this->add_additional_fields_schema( $this->schema ); 597 } 598 599 /** 600 * Retrieves the search params for the themes collection. 601 * 602 * @since 5.0.0 603 * 604 * @return array Collection parameters. 605 */ 606 public function get_collection_params() { 607 $query_params = array( 608 'status' => array( 609 'description' => __( 'Limit result set to themes assigned one or more statuses.' ), 610 'type' => 'array', 611 'items' => array( 612 'enum' => array( 'active', 'inactive' ), 613 'type' => 'string', 614 ), 615 ), 616 ); 617 618 /** 619 * Filters REST API collection parameters for the themes controller. 620 * 621 * @since 5.0.0 622 * 623 * @param array $query_params JSON Schema-formatted collection parameters. 624 */ 625 return apply_filters( 'rest_themes_collection_params', $query_params ); 626 } 627 628 /** 629 * Sanitizes and validates the list of theme status. 630 * 631 * @since 5.0.0 632 * @deprecated 5.7.0 633 * 634 * @param string|array $statuses One or more theme statuses. 635 * @param WP_REST_Request $request Full details about the request. 636 * @param string $parameter Additional parameter to pass to validation. 637 * @return array|WP_Error A list of valid statuses, otherwise WP_Error object. 638 */ 639 public function sanitize_theme_status( $statuses, $request, $parameter ) { 640 _deprecated_function( __METHOD__, '5.7.0' ); 641 642 $statuses = wp_parse_slug_list( $statuses ); 643 644 foreach ( $statuses as $status ) { 645 $result = rest_validate_request_arg( $status, $request, $parameter ); 646 647 if ( is_wp_error( $result ) ) { 648 return $result; 649 } 650 } 651 652 return $statuses; 653 } 654 }
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