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/wp-includes/rest-api/endpoints/ -> class-wp-rest-themes-controller.php (source)

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


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