class.json-api-date.php
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class.json-api-links.php
6 months ago
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class.json-api-links.php
452 lines
| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | /** |
| 3 | * WPCOM_JSON_API_Links class. |
| 4 | * |
| 5 | * @package automattic/jetpack |
| 6 | */ |
| 7 | |
| 8 | if ( ! defined( 'ABSPATH' ) ) { |
| 9 | exit( 0 ); |
| 10 | } |
| 11 | |
| 12 | require_once __DIR__ . '/../class.json-api.php'; |
| 13 | |
| 14 | /** |
| 15 | * Base class for WPCOM_JSON_API_Links. |
| 16 | */ |
| 17 | class WPCOM_JSON_API_Links { |
| 18 | |
| 19 | /** |
| 20 | * An instance of the WPCOM_JSON_API. |
| 21 | * |
| 22 | * @var WPCOM_JSON_API |
| 23 | */ |
| 24 | private $api; |
| 25 | |
| 26 | /** |
| 27 | * A WPCOM_JSON_API_Links instance. |
| 28 | * |
| 29 | * @var WPCOM_JSON_API_Links |
| 30 | */ |
| 31 | private static $instance; |
| 32 | |
| 33 | /** |
| 34 | * An array of the closest supported version of an endpoint to the current endpoint. |
| 35 | * |
| 36 | * @var array |
| 37 | */ |
| 38 | private $closest_endpoint_cache_by_version = array(); |
| 39 | |
| 40 | /** |
| 41 | * An array including the current api endpoint as well as the max versions found if that endpoint doesn't exist. |
| 42 | * |
| 43 | * @var array |
| 44 | */ |
| 45 | private $matches_by_version = array(); |
| 46 | |
| 47 | /** |
| 48 | * An array including the cached endpoint path versions. |
| 49 | * |
| 50 | * @var array |
| 51 | */ |
| 52 | private $cache_result = null; |
| 53 | |
| 54 | /** |
| 55 | * Creates a new instance of the WPCOM_JSON_API_Links class. |
| 56 | * |
| 57 | * @return WPCOM_JSON_API_Links |
| 58 | */ |
| 59 | public static function getInstance() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid |
| 60 | if ( null === self::$instance ) { |
| 61 | self::$instance = new self(); |
| 62 | } |
| 63 | |
| 64 | return self::$instance; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * WPCOM_JSON_API_Links constructor. |
| 69 | * |
| 70 | * Method protected for singleton. |
| 71 | */ |
| 72 | protected function __construct() { |
| 73 | $this->api = WPCOM_JSON_API::init(); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * An empty, private __clone method to prohibit cloning of this instance. |
| 78 | */ |
| 79 | private function __clone() { } |
| 80 | |
| 81 | /** |
| 82 | * Overriding PHP's default __wakeup method to prvent unserializing of the instance, and return an error message. |
| 83 | * |
| 84 | * @return never |
| 85 | */ |
| 86 | public function __wakeup() { |
| 87 | die( "Please don't __wakeup WPCOM_JSON_API_Links" ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Generate a URL to an endpoint |
| 92 | * |
| 93 | * Used to construct meta links in API responses |
| 94 | * |
| 95 | * @param mixed ...$args Optional arguments to be appended to URL. |
| 96 | * @return string Endpoint URL |
| 97 | **/ |
| 98 | public function get_link( ...$args ) { |
| 99 | $format = array_shift( $args ); |
| 100 | $base = WPCOM_JSON_API__BASE; |
| 101 | |
| 102 | $path = array_pop( $args ); |
| 103 | |
| 104 | if ( $path ) { |
| 105 | $path = '/' . ltrim( $path, '/' ); |
| 106 | // tack the path onto the end of the format string. |
| 107 | // have to escape %'s in the path as %% because |
| 108 | // we're about to pass it through sprintf and we don't |
| 109 | // want it to see the % as a placeholder. |
| 110 | $format .= str_replace( '%', '%%', $path ); |
| 111 | } |
| 112 | |
| 113 | // Escape any % in args before using sprintf. |
| 114 | $escaped_args = array(); |
| 115 | foreach ( $args as $arg_key => $arg_value ) { |
| 116 | $escaped_args[ $arg_key ] = str_replace( '%', '%%', $arg_value ); |
| 117 | } |
| 118 | |
| 119 | $relative_path = vsprintf( $format, $escaped_args ); |
| 120 | |
| 121 | if ( ! wp_startswith( $relative_path, '.' ) ) { |
| 122 | // Generic version. Match the requested version as best we can. |
| 123 | $api_version = $this->get_closest_version_of_endpoint( $format, $relative_path ); |
| 124 | $base = substr( $base, 0, - 1 ) . $api_version; |
| 125 | } |
| 126 | |
| 127 | // escape any % in the relative path before running it through sprintf again. |
| 128 | $relative_path = str_replace( '%', '%%', $relative_path ); |
| 129 | // http, WPCOM_JSON_API__BASE, ... , path. |
| 130 | // %s , %s , $format, %s. |
| 131 | return esc_url_raw( sprintf( "https://%s$relative_path", $base ) ); |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Generate the /me prefixed endpoint URL |
| 136 | * |
| 137 | * Used to construct meta links in API responses, specific to WordPress.com user account pages. |
| 138 | * |
| 139 | * @param string $path Optional path to be appended to the URL. |
| 140 | * @return string /me endpoint URL |
| 141 | **/ |
| 142 | public function get_me_link( $path = '' ) { |
| 143 | return $this->get_link( '/me', $path ); |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Generate the endpoint URL for taxonomies |
| 148 | * |
| 149 | * Used to construct meta links in API responses, specific to taxonomies. |
| 150 | * |
| 151 | * @param int $blog_id The site's Jetpack blog ID. |
| 152 | * @param int $taxonomy_id The taxonomy ID (for example of the category, tag). |
| 153 | * @param string $taxonomy_type The taxonomy type (for example category, tag). |
| 154 | * @param string $path Optional path to be appended to the URL. |
| 155 | * @return string Endpoint URL including taxonomy information. |
| 156 | **/ |
| 157 | public function get_taxonomy_link( $blog_id, $taxonomy_id, $taxonomy_type, $path = '' ) { |
| 158 | switch ( $taxonomy_type ) { |
| 159 | case 'category': |
| 160 | return $this->get_link( '/sites/%d/categories/slug:%s', $blog_id, $taxonomy_id, $path ); |
| 161 | |
| 162 | case 'post_tag': |
| 163 | return $this->get_link( '/sites/%d/tags/slug:%s', $blog_id, $taxonomy_id, $path ); |
| 164 | |
| 165 | default: |
| 166 | return $this->get_link( '/sites/%d/taxonomies/%s/terms/slug:%s', $blog_id, $taxonomy_type, $taxonomy_id, $path ); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Generate the endpoint URL for media links |
| 172 | * |
| 173 | * Used to construct meta links in API responses, specific to media links. |
| 174 | * |
| 175 | * @param int $blog_id The site's Jetpack blog ID. |
| 176 | * @param int $media_id The media item ID. |
| 177 | * @param string $path Optional path to be appended to the URL. |
| 178 | * @return string Endpoint URL including media information. |
| 179 | **/ |
| 180 | public function get_media_link( $blog_id, $media_id, $path = '' ) { |
| 181 | return $this->get_link( '/sites/%d/media/%d', $blog_id, $media_id, $path ); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Generate the site link endpoint URL |
| 186 | * |
| 187 | * Used to construct meta links in API responses, specific to /site links. |
| 188 | * |
| 189 | * @param int $blog_id The site's Jetpack blog ID. |
| 190 | * @param string $path Optional path to be appended to the URL. |
| 191 | * @return string Endpoint URL including site information. |
| 192 | **/ |
| 193 | public function get_site_link( $blog_id, $path = '' ) { |
| 194 | return $this->get_link( '/sites/%d', $blog_id, $path ); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Generate the posts endpoint URL |
| 199 | * |
| 200 | * Used to construct meta links in API responses, specific to posts links. |
| 201 | * |
| 202 | * @param int $blog_id The site's Jetpack blog ID. |
| 203 | * @param int $post_id The post ID. |
| 204 | * @param string $path Optional path to be appended to the URL. |
| 205 | * @return string Endpoint URL including post information. |
| 206 | **/ |
| 207 | public function get_post_link( $blog_id, $post_id, $path = '' ) { |
| 208 | return $this->get_link( '/sites/%d/posts/%d', $blog_id, $post_id, $path ); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Generate the comments endpoint URL |
| 213 | * |
| 214 | * Used to construct meta links in API responses, specific to comments links. |
| 215 | * |
| 216 | * @param int $blog_id The site's Jetpack blog ID. |
| 217 | * @param int $comment_id The comment ID. |
| 218 | * @param string $path Optional path to be appended to the URL. |
| 219 | * @return string Endpoint URL including comment information. |
| 220 | **/ |
| 221 | public function get_comment_link( $blog_id, $comment_id, $path = '' ) { |
| 222 | return $this->get_link( '/sites/%d/comments/%d', $blog_id, $comment_id, $path ); |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Generate the endpoint URL for Publicize connections |
| 227 | * |
| 228 | * Used to construct meta links in API responses, specific to Publicize connections. |
| 229 | * |
| 230 | * @param int $blog_id The site's Jetpack blog ID. |
| 231 | * @param int $publicize_connection_id The ID of the Publicize connection. |
| 232 | * @param string $path Optional path to be appended to the URL. |
| 233 | * @return string Endpoint URL including Publicize connection information. |
| 234 | **/ |
| 235 | public function get_publicize_connection_link( $blog_id, $publicize_connection_id, $path = '' ) { |
| 236 | return $this->get_link( '.1/sites/%d/publicize-connections/%d', $blog_id, $publicize_connection_id, $path ); |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Generate the endpoint URL for a single Publicize connection including a Keyring connection |
| 241 | * |
| 242 | * Used to construct meta links in API responses, specific to a single Publicize and Keyring connection. |
| 243 | * |
| 244 | * @param int $keyring_token_id The ID of the Keyring connection. |
| 245 | * @param string $path Optional path to be appended to the URL. |
| 246 | * @return string Endpoint URL including specific Keyring connection information for a specific Publicize connection. |
| 247 | **/ |
| 248 | public function get_publicize_connections_link( $keyring_token_id, $path = '' ) { |
| 249 | return $this->get_link( '.1/me/publicize-connections/?keyring_connection_ID=%d', $keyring_token_id, $path ); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Generate the endpoint URL for a single Keyring connection |
| 254 | * |
| 255 | * Used to construct meta links in API responses, specific to a Keyring connections. |
| 256 | * |
| 257 | * @param int $keyring_token_id The ID of the Keyring connection. |
| 258 | * @param string $path Optional path to be appended to the URL. |
| 259 | * @return string Endpoint URL including specific Keyring connection. |
| 260 | **/ |
| 261 | public function get_keyring_connection_link( $keyring_token_id, $path = '' ) { |
| 262 | return $this->get_link( '.1/me/keyring-connections/%d', $keyring_token_id, $path ); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Generate the endpoint URL for an external service that can be integrated with via Keyring |
| 267 | * |
| 268 | * Used to construct meta links in API responses, specific to an external service. |
| 269 | * |
| 270 | * @param int $external_service The ID of the external service. |
| 271 | * @param string $path Optional path to be appended to the URL. |
| 272 | * @return string Endpoint URL including information about an external service that WordPress.com or Jetpack sites can integrate with via keyring. |
| 273 | **/ |
| 274 | public function get_external_service_link( $external_service, $path = '' ) { |
| 275 | return $this->get_link( '.1/meta/external-services/%s', $external_service, $path ); |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Try to find the closest supported version of an endpoint to the current endpoint |
| 280 | * |
| 281 | * For example, if we were looking at the path /animals/panda: |
| 282 | * - if the current endpoint is v1.3 and there is a v1.3 of /animals/%s available, we return 1.3 |
| 283 | * - if the current endpoint is v1.3 and there is no v1.3 of /animals/%s known, we fall back to the |
| 284 | * maximum available version of /animals/%s, e.g. 1.1 |
| 285 | * |
| 286 | * This method is used in get_link() to construct meta links for API responses. |
| 287 | * |
| 288 | * @param string $template_path The generic endpoint path, e.g. /sites/%s . |
| 289 | * @param string $path The current endpoint path, relative to the version, e.g. /sites/12345 . |
| 290 | * @param string $request_method Request method used to access the endpoint path . |
| 291 | * @return string The current version, or otherwise the maximum version available |
| 292 | */ |
| 293 | public function get_closest_version_of_endpoint( $template_path, $path, $request_method = 'GET' ) { |
| 294 | $closest_endpoint_cache_by_version = & $this->closest_endpoint_cache_by_version; |
| 295 | |
| 296 | $api_version = $this->api->version ?? ''; |
| 297 | $closest_endpoint_cache = & $closest_endpoint_cache_by_version[ $api_version ]; |
| 298 | if ( ! $closest_endpoint_cache ) { |
| 299 | $closest_endpoint_cache_by_version[ $api_version ] = array(); |
| 300 | $closest_endpoint_cache = & $closest_endpoint_cache_by_version[ $api_version ]; |
| 301 | } |
| 302 | |
| 303 | if ( ! isset( $closest_endpoint_cache[ $template_path ] ) ) { |
| 304 | $closest_endpoint_cache[ $template_path ] = array(); |
| 305 | } elseif ( isset( $closest_endpoint_cache[ $template_path ][ $request_method ] ) ) { |
| 306 | return $closest_endpoint_cache[ $template_path ][ $request_method ]; |
| 307 | } |
| 308 | |
| 309 | $path = untrailingslashit( $path ); |
| 310 | |
| 311 | // /help is a special case - always use the current request version |
| 312 | if ( wp_endswith( $path, '/help' ) ) { |
| 313 | $closest_endpoint_cache[ $template_path ][ $request_method ] = $this->api->version; |
| 314 | return $this->api->version; |
| 315 | } |
| 316 | |
| 317 | $matches_by_version = & $this->matches_by_version; |
| 318 | |
| 319 | // try to match out of saved matches. |
| 320 | if ( ! isset( $matches_by_version[ $api_version ] ) ) { |
| 321 | $matches_by_version[ $api_version ] = array(); |
| 322 | } |
| 323 | foreach ( $matches_by_version[ $api_version ] as $match ) { |
| 324 | $regex = $match->regex; |
| 325 | if ( preg_match( "#^$regex\$#", $path ) ) { |
| 326 | $closest_endpoint_cache[ $template_path ][ $request_method ] = $match->version; |
| 327 | return $match->version; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | $endpoint_path_versions = $this->get_endpoint_path_versions(); |
| 332 | $last_path_segment = $this->get_last_segment_of_relative_path( $path ); |
| 333 | $max_version_found = null; |
| 334 | |
| 335 | foreach ( $endpoint_path_versions as $endpoint_last_path_segment => $endpoints ) { |
| 336 | |
| 337 | // Does the last part of the path match the path key? (e.g. 'posts') |
| 338 | // If the last part contains a placeholder (e.g. %s), we want to carry on. |
| 339 | // phpcs:ignore Universal.Operators.StrictComparisons.LooseNotEqual |
| 340 | if ( $last_path_segment != $endpoint_last_path_segment && ! strstr( $endpoint_last_path_segment, '%' ) ) { |
| 341 | continue; |
| 342 | } |
| 343 | |
| 344 | foreach ( $endpoints as $endpoint ) { |
| 345 | // Does the request method match? |
| 346 | if ( ! in_array( $request_method, $endpoint['request_methods'], true ) ) { |
| 347 | continue; |
| 348 | } |
| 349 | |
| 350 | $endpoint_path = untrailingslashit( (string) $endpoint['path'] ); |
| 351 | $endpoint_path_regex = str_replace( array( '%s', '%d' ), array( '([^/?&]+)', '(\d+)' ), $endpoint_path ); |
| 352 | |
| 353 | if ( ! preg_match( "#^$endpoint_path_regex\$#", $path ) ) { |
| 354 | continue; |
| 355 | } |
| 356 | |
| 357 | // Make sure the endpoint exists at the same version. |
| 358 | if ( null !== $this->api->version && |
| 359 | version_compare( $this->api->version, $endpoint['min_version'], '>=' ) && |
| 360 | version_compare( $this->api->version, $endpoint['max_version'], '<=' ) |
| 361 | ) { |
| 362 | array_push( |
| 363 | $matches_by_version[ $this->api->version ], |
| 364 | (object) array( |
| 365 | 'version' => $this->api->version, |
| 366 | 'regex' => $endpoint_path_regex, |
| 367 | ) |
| 368 | ); |
| 369 | $closest_endpoint_cache[ $template_path ][ $request_method ] = $this->api->version; |
| 370 | return $this->api->version; |
| 371 | } |
| 372 | |
| 373 | // If the endpoint doesn't exist at the same version, record the max version we found. |
| 374 | if ( empty( $max_version_found ) || version_compare( $max_version_found['version'], $endpoint['max_version'], '<' ) ) { |
| 375 | $max_version_found = array( |
| 376 | 'version' => $endpoint['max_version'], |
| 377 | 'regex' => $endpoint_path_regex, |
| 378 | ); |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | // If the endpoint version is less than the requested endpoint version, return the max version found. |
| 384 | if ( ! empty( $max_version_found ) ) { |
| 385 | array_push( |
| 386 | $matches_by_version[ $api_version ], |
| 387 | (object) $max_version_found |
| 388 | ); |
| 389 | $closest_endpoint_cache[ $template_path ][ $request_method ] = $max_version_found['version']; |
| 390 | return $max_version_found['version']; |
| 391 | } |
| 392 | |
| 393 | // Otherwise, use the API version of the current request. |
| 394 | return $this->api->version; |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * Get an array of endpoint paths with their associated versions |
| 399 | * |
| 400 | * @return array Array of endpoint paths, min_versions and max_versions, keyed by last segment of path |
| 401 | **/ |
| 402 | protected function get_endpoint_path_versions() { |
| 403 | |
| 404 | if ( ! empty( $this->cache_result ) ) { |
| 405 | return $this->cache_result; |
| 406 | } |
| 407 | |
| 408 | /* |
| 409 | * Create a map of endpoints and their min/max versions keyed by the last segment of the path (e.g. 'posts') |
| 410 | * This reduces the search space when finding endpoint matches in get_closest_version_of_endpoint() |
| 411 | */ |
| 412 | $endpoint_path_versions = array(); |
| 413 | |
| 414 | foreach ( $this->api->endpoints as $key => $endpoint_objects ) { |
| 415 | |
| 416 | // @todo As with the todo in class.json-api.php, we need to determine if anything depends on this being serialized and hence unserialized, rather than e.g. JSON. |
| 417 | // The key contains a serialized path, min_version and max_version. |
| 418 | list( $path, $min_version, $max_version ) = unserialize( $key ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize -- Legacy, see serialization at class.json-api.php. |
| 419 | |
| 420 | // Grab the last component of the relative path to use as the top-level key. |
| 421 | $last_path_segment = $this->get_last_segment_of_relative_path( $path ) ?? ''; |
| 422 | |
| 423 | $endpoint_path_versions[ $last_path_segment ][] = array( |
| 424 | 'path' => $path, |
| 425 | 'min_version' => $min_version, |
| 426 | 'max_version' => $max_version, |
| 427 | 'request_methods' => array_keys( $endpoint_objects ), |
| 428 | ); |
| 429 | } |
| 430 | |
| 431 | $this->cache_result = $endpoint_path_versions; |
| 432 | |
| 433 | return $endpoint_path_versions; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Grab the last segment of a relative path |
| 438 | * |
| 439 | * @param string $path Path. |
| 440 | * @return string Last path segment |
| 441 | */ |
| 442 | protected function get_last_segment_of_relative_path( $path ) { |
| 443 | $path_parts = array_filter( explode( '/', $path ) ); |
| 444 | |
| 445 | if ( empty( $path_parts ) ) { |
| 446 | return null; |
| 447 | } |
| 448 | |
| 449 | return end( $path_parts ); |
| 450 | } |
| 451 | } |
| 452 |