| @@ -1,724 +1,719 @@ | ||
| 1 | -<?php | |
| 2 | - /** | |
| 3 | - * @package Freemius | |
| 4 | - * @copyright Copyright (c) 2015, Freemius, Inc. | |
| 5 | - * @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3 | |
| 6 | - * @since 1.0.4 | |
| 7 | - */ | |
| 8 | - | |
| 9 | - if ( ! defined( 'ABSPATH' ) ) { | |
| 10 | - exit; | |
| 11 | - } | |
| 12 | - | |
| 13 | - /** | |
| 14 | - * Class FS_Api | |
| 15 | - * | |
| 16 | - * Wraps Freemius API SDK to handle: | |
| 17 | - * 1. Clock sync. | |
| 18 | - * 2. Fallback to HTTP when HTTPS fails. | |
| 19 | - * 3. Adds caching layer to GET requests. | |
| 20 | - * 4. Adds consistency for failed requests by using last cached version. | |
| 21 | - */ | |
| 22 | - class FS_Api { | |
| 23 | - /** | |
| 24 | - * @var FS_Api[] | |
| 25 | - */ | |
| 26 | - private static $_instances = array(); | |
| 27 | - | |
| 28 | - /** | |
| 29 | - * @var FS_Option_Manager Freemius options, options-manager. | |
| 30 | - */ | |
| 31 | - private static $_options; | |
| 32 | - | |
| 33 | - /** | |
| 34 | - * @var FS_Cache_Manager API Caching layer | |
| 35 | - */ | |
| 36 | - private static $_cache; | |
| 37 | - | |
| 38 | - /** | |
| 39 | - * @var int Clock diff in seconds between current server to API server. | |
| 40 | - */ | |
| 41 | - private static $_clock_diff; | |
| 42 | - | |
| 43 | - /** | |
| 44 | - * @var Freemius_Api_WordPress | |
| 45 | - */ | |
| 46 | - private $_api; | |
| 47 | - | |
| 48 | - /** | |
| 49 | - * @var string | |
| 50 | - */ | |
| 51 | - private $_slug; | |
| 52 | - | |
| 53 | - /** | |
| 54 | - * @var FS_Logger | |
| 55 | - * @since 1.0.4 | |
| 56 | - */ | |
| 57 | - private $_logger; | |
| 58 | - | |
| 59 | - /** | |
| 60 | - * @author Leo Fajardo (@leorw) | |
| 61 | - * @since 2.3.0 | |
| 62 | - * | |
| 63 | - * @var string | |
| 64 | - */ | |
| 65 | - private $_sdk_version; | |
| 66 | - | |
| 67 | - /** | |
| 68 | - * @author Leo Fajardo (@leorw) | |
| 69 | - * @since 2.5.0 | |
| 70 | - * | |
| 71 | - * @var string | |
| 72 | - */ | |
| 73 | - private $_url; | |
| 74 | - | |
| 75 | - /** | |
| 76 | - * @param string $slug | |
| 77 | - * @param string $scope 'app', 'developer', 'user' or 'install'. | |
| 78 | - * @param number $id Element's id. | |
| 79 | - * @param string $public_key Public key. | |
| 80 | - * @param bool $is_sandbox | |
| 81 | - * @param bool|string $secret_key Element's secret key. | |
| 82 | - * @param null|string $sdk_version | |
| 83 | - * @param null|string $url | |
| 84 | - * | |
| 85 | - * @return FS_Api | |
| 86 | - */ | |
| 87 | - static function instance( | |
| 88 | - $slug, | |
| 89 | - $scope, | |
| 90 | - $id, | |
| 91 | - $public_key, | |
| 92 | - $is_sandbox, | |
| 93 | - $secret_key = false, | |
| 94 | - $sdk_version = null, | |
| 95 | - $url = null | |
| 96 | - ) { | |
| 97 | - $identifier = md5( $slug . $scope . $id . $public_key . ( is_string( $secret_key ) ? $secret_key : '' ) . json_encode( $is_sandbox ) ); | |
| 98 | - | |
| 99 | - if ( ! isset( self::$_instances[ $identifier ] ) ) { | |
| 100 | - self::_init(); | |
| 101 | - | |
| 102 | - self::$_instances[ $identifier ] = new FS_Api( $slug, $scope, $id, $public_key, $secret_key, $is_sandbox, $sdk_version, $url ); | |
| 103 | - } | |
| 104 | - | |
| 105 | - return self::$_instances[ $identifier ]; | |
| 106 | - } | |
| 107 | - | |
| 108 | - private static function _init() { | |
| 109 | - if ( isset( self::$_options ) ) { | |
| 110 | - return; | |
| 111 | - } | |
| 112 | - | |
| 113 | - if ( ! class_exists( 'Freemius_Api_WordPress' ) ) { | |
| 114 | - require_once WP_FS__DIR_SDK . '/FreemiusWordPress.php'; | |
| 115 | - } | |
| 116 | - | |
| 117 | - self::$_options = FS_Option_Manager::get_manager( WP_FS__OPTIONS_OPTION_NAME, true, true ); | |
| 118 | - self::$_cache = FS_Cache_Manager::get_manager( WP_FS__API_CACHE_OPTION_NAME ); | |
| 119 | - | |
| 120 | - self::$_clock_diff = self::$_options->get_option( 'api_clock_diff', 0 ); | |
| 121 | - Freemius_Api_WordPress::SetClockDiff( self::$_clock_diff ); | |
| 122 | - | |
| 123 | - if ( self::$_options->get_option( 'api_force_http', false ) ) { | |
| 124 | - Freemius_Api_WordPress::SetHttp(); | |
| 125 | - } | |
| 126 | - } | |
| 127 | - | |
| 128 | - /** | |
| 129 | - * @param string $slug | |
| 130 | - * @param string $scope 'app', 'developer', 'user' or 'install'. | |
| 131 | - * @param number $id Element's id. | |
| 132 | - * @param string $public_key Public key. | |
| 133 | - * @param bool|string $secret_key Element's secret key. | |
| 134 | - * @param bool $is_sandbox | |
| 135 | - * @param null|string $sdk_version | |
| 136 | - * @param null|string $url | |
| 137 | - */ | |
| 138 | - private function __construct( | |
| 139 | - $slug, | |
| 140 | - $scope, | |
| 141 | - $id, | |
| 142 | - $public_key, | |
| 143 | - $secret_key, | |
| 144 | - $is_sandbox, | |
| 145 | - $sdk_version, | |
| 146 | - $url | |
| 147 | - ) { | |
| 148 | - $this->_api = new Freemius_Api_WordPress( $scope, $id, $public_key, $secret_key, $is_sandbox ); | |
| 149 | - | |
| 150 | - $this->_slug = $slug; | |
| 151 | - $this->_sdk_version = $sdk_version; | |
| 152 | - $this->_url = $url; | |
| 153 | - $this->_logger = FS_Logger::get_logger( WP_FS__SLUG . '_' . $slug . '_api', WP_FS__DEBUG_SDK, WP_FS__ECHO_DEBUG_SDK ); | |
| 154 | - } | |
| 155 | - | |
| 156 | - /** | |
| 157 | - * Find clock diff between server and API server, and store the diff locally. | |
| 158 | - * | |
| 159 | - * @param bool|int $diff | |
| 160 | - * | |
| 161 | - * @return bool|int False if clock diff didn't change, otherwise returns the clock diff in seconds. | |
| 162 | - */ | |
| 163 | - private function _sync_clock_diff( $diff = false ) { | |
| 164 | - $this->_logger->entrance(); | |
| 165 | - | |
| 166 | - // Sync clock and store. | |
| 167 | - $new_clock_diff = ( false === $diff ) ? | |
| 168 | - Freemius_Api_WordPress::FindClockDiff() : | |
| 169 | - $diff; | |
| 170 | - | |
| 171 | - if ( $new_clock_diff === self::$_clock_diff ) { | |
| 172 | - return false; | |
| 173 | - } | |
| 174 | - | |
| 175 | - self::$_clock_diff = $new_clock_diff; | |
| 176 | - | |
| 177 | - // Update API clock's diff. | |
| 178 | - Freemius_Api_WordPress::SetClockDiff( self::$_clock_diff ); | |
| 179 | - | |
| 180 | - // Store new clock diff in storage. | |
| 181 | - self::$_options->set_option( 'api_clock_diff', self::$_clock_diff, true ); | |
| 182 | - | |
| 183 | - return $new_clock_diff; | |
| 184 | - } | |
| 185 | - | |
| 186 | - /** | |
| 187 | - * Override API call to enable retry with servers' clock auto sync method. | |
| 188 | - * | |
| 189 | - * @param string $path | |
| 190 | - * @param string $method | |
| 191 | - * @param array $params | |
| 192 | - * @param bool $in_retry Is in retry or first call attempt. | |
| 193 | - * | |
| 194 | - * @return array|mixed|string|void | |
| 195 | - */ | |
| 196 | - private function _call( $path, $method = 'GET', $params = array(), $in_retry = false ) { | |
| 197 | - $this->_logger->entrance( $method . ':' . $path ); | |
| 198 | - | |
| 199 | - $force_http = ( ! $in_retry && self::$_options->get_option( 'api_force_http', false ) ); | |
| 200 | - | |
| 201 | - if ( self::is_temporary_down() ) { | |
| 202 | - $result = $this->get_temporary_unavailable_error(); | |
| 203 | - } else { | |
| 204 | - /** | |
| 205 | - * @since 2.3.0 Include the SDK version with all API requests that going through the API manager. IMPORTANT: Only pass the SDK version if the caller didn't include it yet. | |
| 206 | - */ | |
| 207 | - if ( ! empty( $this->_sdk_version ) ) { | |
| 208 | - if ( false === strpos( $path, 'sdk_version=' ) && | |
| 209 | - ! isset( $params['sdk_version'] ) | |
| 210 | - ) { | |
| 211 | - // Always add the sdk_version param in the querystring. DO NOT INCLUDE IT IN THE BODY PARAMS, OTHERWISE, IT MAY LEAD TO AN UNEXPECTED PARAMS PARSING IN CASES WHERE THE $params IS A REGULAR NON-ASSOCIATIVE ARRAY. | |
| 212 | - $path = add_query_arg( 'sdk_version', $this->_sdk_version, $path ); | |
| 213 | - } | |
| 214 | - } | |
| 215 | - | |
| 216 | - /** | |
| 217 | - * @since 2.5.0 Include the site's URL, if available, in all API requests that are going through the API manager. | |
| 218 | - */ | |
| 219 | - if ( ! empty( $this->_url ) ) { | |
| 220 | - if ( false === strpos( $path, 'url=' ) && | |
| 221 | - ! isset( $params['url'] ) | |
| 222 | - ) { | |
| 223 | - $path = add_query_arg( 'url', $this->_url, $path ); | |
| 224 | - } | |
| 225 | - } | |
| 226 | - | |
| 227 | - $result = $this->_api->Api( $path, $method, $params ); | |
| 228 | - | |
| 229 | - if ( | |
| 230 | - ! $in_retry && | |
| 231 | - null !== $result && | |
| 232 | - isset( $result->error ) && | |
| 233 | - isset( $result->error->code ) | |
| 234 | - ) { | |
| 235 | - $retry = false; | |
| 236 | - | |
| 237 | - if ( 'request_expired' === $result->error->code ) { | |
| 238 | - $diff = isset( $result->error->timestamp ) ? | |
| 239 | - ( time() - strtotime( $result->error->timestamp ) ) : | |
| 240 | - false; | |
| 241 | - | |
| 242 | - // Try to sync clock diff. | |
| 243 | - if ( false !== $this->_sync_clock_diff( $diff ) ) { | |
| 244 | - // Retry call with new synced clock. | |
| 245 | - $retry = true; | |
| 246 | - } | |
| 247 | - } else if ( | |
| 248 | - Freemius_Api_WordPress::IsHttps() && | |
| 249 | - FS_Api::is_ssl_error_response( $result ) | |
| 250 | - ) { | |
| 251 | - $force_http = true; | |
| 252 | - $retry = true; | |
| 253 | - } | |
| 254 | - | |
| 255 | - if ( $retry ) { | |
| 256 | - if ( $force_http ) { | |
| 257 | - $this->toggle_force_http( true ); | |
| 258 | - } | |
| 259 | - | |
| 260 | - $result = $this->_call( $path, $method, $params, true ); | |
| 261 | - } | |
| 262 | - } | |
| 263 | - } | |
| 264 | - | |
| 265 | - if ( self::is_api_error( $result ) ) { | |
| 266 | - if ( $this->_logger->is_on() ) { | |
| 267 | - // Log API errors. | |
| 268 | - $this->_logger->api_error( $result ); | |
| 269 | - } | |
| 270 | - | |
| 271 | - if ( $force_http ) { | |
| 272 | - $this->toggle_force_http( false ); | |
| 273 | - } | |
| 274 | - } | |
| 275 | - | |
| 276 | - return $result; | |
| 277 | - } | |
| 278 | - | |
| 279 | - /** | |
| 280 | - * Override API call to wrap it in servers' clock sync method. | |
| 281 | - * | |
| 282 | - * @param string $path | |
| 283 | - * @param string $method | |
| 284 | - * @param array $params | |
| 285 | - * | |
| 286 | - * @return array|mixed|string|void | |
| 287 | - * @throws Freemius_Exception | |
| 288 | - */ | |
| 289 | - function call( $path, $method = 'GET', $params = array() ) { | |
| 290 | - return $this->_call( $path, $method, $params ); | |
| 291 | - } | |
| 292 | - | |
| 293 | - /** | |
| 294 | - * Get API request URL signed via query string. | |
| 295 | - * | |
| 296 | - * @param string $path | |
| 297 | - * | |
| 298 | - * @return string | |
| 299 | - */ | |
| 300 | - function get_signed_url( $path ) { | |
| 301 | - return $this->_api->GetSignedUrl( $path ); | |
| 302 | - } | |
| 303 | - | |
| 304 | - /** | |
| 305 | - * @param string $path | |
| 306 | - * @param bool $flush | |
| 307 | - * @param int $expiration (optional) Time until expiration in seconds from now, defaults to 24 hours | |
| 308 | - * | |
| 309 | - * @return stdClass|mixed | |
| 310 | - */ | |
| 311 | - function get( $path = '/', $flush = false, $expiration = WP_FS__TIME_24_HOURS_IN_SEC ) { | |
| 312 | - $this->_logger->entrance( $path ); | |
| 313 | - | |
| 314 | - $cache_key = $this->get_cache_key( $path ); | |
| 315 | - | |
| 316 | - // Always flush during development. | |
| 317 | - if ( WP_FS__DEV_MODE || $this->_api->IsSandbox() ) { | |
| 318 | - $flush = true; | |
| 319 | - } | |
| 320 | - | |
| 321 | - $has_valid_cache = self::$_cache->has_valid( $cache_key, $expiration ); | |
| 322 | - $cached_result = $has_valid_cache ? | |
| 323 | - self::$_cache->get( $cache_key ) : | |
| 324 | - null; | |
| 325 | - | |
| 326 | - if ( $flush || is_null( $cached_result ) ) { | |
| 327 | - $result = $this->call( $path ); | |
| 328 | - | |
| 329 | - if ( ! is_object( $result ) || isset( $result->error ) ) { | |
| 330 | - // Api returned an error. | |
| 331 | - if ( is_object( $cached_result ) && | |
| 332 | - ! isset( $cached_result->error ) | |
| 333 | - ) { | |
| 334 | - // If there was an error during a newer data fetch, | |
| 335 | - // fallback to older data version. | |
| 336 | - $result = $cached_result; | |
| 337 | - | |
| 338 | - if ( $this->_logger->is_on() ) { | |
| 339 | - $this->_logger->warn( 'Fallback to cached API result: ' . var_export( $cached_result, true ) ); | |
| 340 | - } | |
| 341 | - } else { | |
| 342 | - if ( is_object( $result ) && isset( $result->error->http ) && 404 == $result->error->http ) { | |
| 343 | - /** | |
| 344 | - * If the response code is 404, cache the result for half of the `$expiration`. | |
| 345 | - * | |
| 346 | - * @author Leo Fajardo (@leorw) | |
| 347 | - * @since 2.2.4 | |
| 348 | - */ | |
| 349 | - $expiration /= 2; | |
| 350 | - } else { | |
| 351 | - // If no older data version and the response code is not 404, return result without | |
| 352 | - // caching the error. | |
| 353 | - return $result; | |
| 354 | - } | |
| 355 | - } | |
| 356 | - } | |
| 357 | - | |
| 358 | - if ( is_numeric( $expiration ) ) { | |
| 359 | - self::$_cache->set( $cache_key, $result, $expiration ); | |
| 360 | - } | |
| 361 | - | |
| 362 | - $cached_result = $result; | |
| 363 | - } else { | |
| 364 | - $this->_logger->log( 'Using cached API result.' ); | |
| 365 | - } | |
| 366 | - | |
| 367 | - return $cached_result; | |
| 368 | - } | |
| 369 | - | |
| 370 | - /** | |
| 371 | - * @todo Remove this method after migrating Freemius::safe_remote_post() to FS_Api::call(). | |
| 372 | - * | |
| 373 | - * @author Leo Fajardo (@leorw) | |
| 374 | - * @since 2.5.4 | |
| 375 | - * | |
| 376 | - * @param string $url | |
| 377 | - * @param array $remote_args | |
| 378 | - * | |
| 379 | - * @return array|WP_Error The response array or a WP_Error on failure. | |
| 380 | - */ | |
| 381 | - static function remote_request( $url, $remote_args ) { | |
| 382 | - if ( ! class_exists( 'Freemius_Api_WordPress' ) ) { | |
| 383 | - require_once WP_FS__DIR_SDK . '/FreemiusWordPress.php'; | |
| 384 | - } | |
| 385 | - | |
| 386 | - if ( method_exists( 'Freemius_Api_WordPress', 'RemoteRequest' ) ) { | |
| 387 | - return Freemius_Api_WordPress::RemoteRequest( $url, $remote_args ); | |
| 388 | - } | |
| 389 | - | |
| 390 | - // The following is for backward compatibility when a modified PHP SDK version is in use and the `Freemius_Api_WordPress:RemoteRequest()` method doesn't exist. | |
| 391 | - $response = wp_remote_request( $url, $remote_args ); | |
| 392 | - | |
| 393 | - if ( | |
| 394 | - is_array( $response ) && | |
| 395 | - ( | |
| 396 | - empty( $response['headers'] ) || | |
| 397 | - empty( $response['headers']['x-api-server'] ) | |
| 398 | - ) | |
| 399 | - ) { | |
| 400 | - // API is considered blocked if the response doesn't include the `x-api-server` header. When there's no error but this header doesn't exist, the response is usually not in the expected form (e.g., cannot be JSON-decoded). | |
| 401 | - $response = new WP_Error( 'api_blocked', htmlentities( $response['body'] ) ); | |
| 402 | - } | |
| 403 | - | |
| 404 | - return $response; | |
| 405 | - } | |
| 406 | - | |
| 407 | - /** | |
| 408 | - * Check if there's a cached version of the API request. | |
| 409 | - * | |
| 410 | - * @author Vova Feldman (@svovaf) | |
| 411 | - * @since 1.2.1 | |
| 412 | - * | |
| 413 | - * @param string $path | |
| 414 | - * @param string $method | |
| 415 | - * @param array $params | |
| 416 | - * | |
| 417 | - * @return bool | |
| 418 | - */ | |
| 419 | - function is_cached( $path, $method = 'GET', $params = array() ) { | |
| 420 | - $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 421 | - | |
| 422 | - return self::$_cache->has_valid( $cache_key ); | |
| 423 | - } | |
| 424 | - | |
| 425 | - /** | |
| 426 | - * Invalidate a cached version of the API request. | |
| 427 | - * | |
| 428 | - * @author Vova Feldman (@svovaf) | |
| 429 | - * @since 1.2.1.5 | |
| 430 | - * | |
| 431 | - * @param string $path | |
| 432 | - * @param string $method | |
| 433 | - * @param array $params | |
| 434 | - */ | |
| 435 | - function purge_cache( $path, $method = 'GET', $params = array() ) { | |
| 436 | - $this->_logger->entrance( "{$method}:{$path}" ); | |
| 437 | - | |
| 438 | - $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 439 | - | |
| 440 | - self::$_cache->purge( $cache_key ); | |
| 441 | - } | |
| 442 | - | |
| 443 | - /** | |
| 444 | - * Invalidate a cached version of the API request. | |
| 445 | - * | |
| 446 | - * @author Vova Feldman (@svovaf) | |
| 447 | - * @since 2.0.0 | |
| 448 | - * | |
| 449 | - * @param string $path | |
| 450 | - * @param int $expiration | |
| 451 | - * @param string $method | |
| 452 | - * @param array $params | |
| 453 | - */ | |
| 454 | - function update_cache_expiration( $path, $expiration = WP_FS__TIME_24_HOURS_IN_SEC, $method = 'GET', $params = array() ) { | |
| 455 | - $this->_logger->entrance( "{$method}:{$path}:{$expiration}" ); | |
| 456 | - | |
| 457 | - $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 458 | - | |
| 459 | - self::$_cache->update_expiration( $cache_key, $expiration ); | |
| 460 | - } | |
| 461 | - | |
| 462 | - /** | |
| 463 | - * @param string $path | |
| 464 | - * @param string $method | |
| 465 | - * @param array $params | |
| 466 | - * | |
| 467 | - * @return string | |
| 468 | - * @throws \Freemius_Exception | |
| 469 | - */ | |
| 470 | - private function get_cache_key( $path, $method = 'GET', $params = array() ) { | |
| 471 | - $canonized = $this->_api->CanonizePath( $path ); | |
| 472 | -// $exploded = explode('/', $canonized); | |
| 473 | -// return $method . '_' . array_pop($exploded) . '_' . md5($canonized . json_encode($params)); | |
| 474 | - return strtolower( $method . ':' . $canonized ) . ( ! empty( $params ) ? '#' . md5( json_encode( $params ) ) : '' ); | |
| 475 | - } | |
| 476 | - | |
| 477 | - /** | |
| 478 | - * @author Leo Fajardo (@leorw) | |
| 479 | - * @since 2.5.4 | |
| 480 | - * | |
| 481 | - * @param bool $is_http | |
| 482 | - */ | |
| 483 | - private function toggle_force_http( $is_http ) { | |
| 484 | - self::$_options->set_option( 'api_force_http', $is_http, true ); | |
| 485 | - | |
| 486 | - if ( $is_http ) { | |
| 487 | - Freemius_Api_WordPress::SetHttp(); | |
| 488 | - } else if ( method_exists( 'Freemius_Api_WordPress', 'SetHttps' ) ) { | |
| 489 | - Freemius_Api_WordPress::SetHttps(); | |
| 490 | - } | |
| 491 | - } | |
| 492 | - | |
| 493 | - /** | |
| 494 | - * @author Leo Fajardo (@leorw) | |
| 495 | - * @since 2.5.4 | |
| 496 | - * | |
| 497 | - * @param mixed $response | |
| 498 | - * | |
| 499 | - * @return bool | |
| 500 | - */ | |
| 501 | - static function is_blocked( $response ) { | |
| 502 | - return ( | |
| 503 | - self::is_api_error_object( $response, true ) && | |
| 504 | - isset( $response->error->code ) && | |
| 505 | - 'api_blocked' === $response->error->code | |
| 506 | - ); | |
| 507 | - } | |
| 508 | - | |
| 509 | - /** | |
| 510 | - * Check if API is temporary down. | |
| 511 | - * | |
| 512 | - * @author Vova Feldman (@svovaf) | |
| 513 | - * @since 1.1.6 | |
| 514 | - * | |
| 515 | - * @return bool | |
| 516 | - */ | |
| 517 | - static function is_temporary_down() { | |
| 518 | - self::_init(); | |
| 519 | - | |
| 520 | - $test = self::$_cache->get_valid( 'ping_test', null ); | |
| 521 | - | |
| 522 | - return ( false === $test ); | |
| 523 | - } | |
| 524 | - | |
| 525 | - /** | |
| 526 | - * @author Vova Feldman (@svovaf) | |
| 527 | - * @since 1.1.6 | |
| 528 | - * | |
| 529 | - * @return object | |
| 530 | - */ | |
| 531 | - private function get_temporary_unavailable_error() { | |
| 532 | - return (object) array( | |
| 533 | - 'error' => (object) array( | |
| 534 | - 'type' => 'TemporaryUnavailable', | |
| 535 | - 'message' => 'API is temporary unavailable, please retry in ' . ( self::$_cache->get_record_expiration( 'ping_test' ) - WP_FS__SCRIPT_START_TIME ) . ' sec.', | |
| 536 | - 'code' => 'temporary_unavailable', | |
| 537 | - 'http' => 503 | |
| 538 | - ) | |
| 539 | - ); | |
| 540 | - } | |
| 541 | - | |
| 542 | - /** | |
| 543 | - * Check if based on the API result we should try | |
| 544 | - * to re-run the same request with HTTP instead of HTTPS. | |
| 545 | - * | |
| 546 | - * @author Vova Feldman (@svovaf) | |
| 547 | - * @since 1.1.6 | |
| 548 | - * | |
| 549 | - * @param $result | |
| 550 | - * | |
| 551 | - * @return bool | |
| 552 | - */ | |
| 553 | - private static function should_try_with_http( $result ) { | |
| 554 | - if ( ! Freemius_Api_WordPress::IsHttps() ) { | |
| 555 | - return false; | |
| 556 | - } | |
| 557 | - | |
| 558 | - return ( ! is_object( $result ) || | |
| 559 | - ! isset( $result->error ) || | |
| 560 | - ! isset( $result->error->code ) || | |
| 561 | - ! in_array( $result->error->code, array( | |
| 562 | - 'curl_missing', | |
| 563 | - 'cloudflare_ddos_protection', | |
| 564 | - 'maintenance_mode', | |
| 565 | - 'squid_cache_block', | |
| 566 | - 'too_many_requests', | |
| 567 | - ) ) ); | |
| 568 | - | |
| 569 | - } | |
| 570 | - | |
| 571 | - function get_url( $path = '' ) { | |
| 572 | - return Freemius_Api_WordPress::GetUrl( $path, $this->_api->IsSandbox() ); | |
| 573 | - } | |
| 574 | - | |
| 575 | - /** | |
| 576 | - * Clear API cache. | |
| 577 | - * | |
| 578 | - * @author Vova Feldman (@svovaf) | |
| 579 | - * @since 1.0.9 | |
| 580 | - */ | |
| 581 | - static function clear_cache() { | |
| 582 | - self::_init(); | |
| 583 | - | |
| 584 | - self::$_cache = FS_Cache_Manager::get_manager( WP_FS__API_CACHE_OPTION_NAME ); | |
| 585 | - self::$_cache->clear(); | |
| 586 | - } | |
| 587 | - | |
| 588 | - /** | |
| 589 | - * @author Leo Fajardo (@leorw) | |
| 590 | - * @since 2.5.4 | |
| 591 | - */ | |
| 592 | - static function clear_force_http_flag() { | |
| 593 | - self::$_options->unset_option( 'api_force_http' ); | |
| 594 | - } | |
| 595 | - | |
| 596 | - #---------------------------------------------------------------------------------- | |
| 597 | - #region Error Handling | |
| 598 | - #---------------------------------------------------------------------------------- | |
| 599 | - | |
| 600 | - /** | |
| 601 | - * @author Vova Feldman (@svovaf) | |
| 602 | - * @since 1.2.1.5 | |
| 603 | - * | |
| 604 | - * @param mixed $result | |
| 605 | - * | |
| 606 | - * @return bool Is API result contains an error. | |
| 607 | - */ | |
| 608 | - static function is_api_error( $result ) { | |
| 609 | - return ( is_object( $result ) && isset( $result->error ) ) || | |
| 610 | - is_string( $result ); | |
| 611 | - } | |
| 612 | - | |
| 613 | - /** | |
| 614 | - * @author Vova Feldman (@svovaf) | |
| 615 | - * @since 2.0.0 | |
| 616 | - * | |
| 617 | - * @param mixed $result | |
| 618 | - * @param bool $ignore_message | |
| 619 | - * | |
| 620 | - * @return bool Is API result contains an error. | |
| 621 | - */ | |
| 622 | - static function is_api_error_object( $result, $ignore_message = false ) { | |
| 623 | - return ( | |
| 624 | - is_object( $result ) && | |
| 625 | - isset( $result->error ) && | |
| 626 | - ( $ignore_message || isset( $result->error->message ) ) | |
| 627 | - ); | |
| 628 | - } | |
| 629 | - | |
| 630 | - /** | |
| 631 | - * @author Leo Fajardo (@leorw) | |
| 632 | - * @since 2.5.4 | |
| 633 | - * | |
| 634 | - * @param WP_Error|object|string $response | |
| 635 | - * | |
| 636 | - * @return bool | |
| 637 | - */ | |
| 638 | - static function is_ssl_error_response( $response ) { | |
| 639 | - $http_error = null; | |
| 640 | - | |
| 641 | - if ( $response instanceof WP_Error ) { | |
| 642 | - if ( | |
| 643 | - isset( $response->errors ) && | |
| 644 | - isset( $response->errors['http_request_failed'] ) | |
| 645 | - ) { | |
| 646 | - $http_error = strtolower( $response->errors['http_request_failed'][0] ); | |
| 647 | - } | |
| 648 | - } else if ( | |
| 649 | - self::is_api_error_object( $response ) && | |
| 650 | - ! empty( $response->error->message ) | |
| 651 | - ) { | |
| 652 | - $http_error = $response->error->message; | |
| 653 | - } | |
| 654 | - | |
| 655 | - return ( | |
| 656 | - ! empty( $http_error ) && | |
| 657 | - ( | |
| 658 | - false !== strpos( $http_error, 'curl error 35' ) || | |
| 659 | - ( | |
| 660 | - false === strpos( $http_error, '</html>' ) && | |
| 661 | - false !== strpos( $http_error, 'ssl' ) | |
| 662 | - ) | |
| 663 | - ) | |
| 664 | - ); | |
| 665 | - } | |
| 666 | - | |
| 667 | - /** | |
| 668 | - * Checks if given API result is a non-empty and not an error object. | |
| 669 | - * | |
| 670 | - * @author Vova Feldman (@svovaf) | |
| 671 | - * @since 1.2.1.5 | |
| 672 | - * | |
| 673 | - * @param mixed $result | |
| 674 | - * @param string|null $required_property Optional property we want to verify that is set. | |
| 675 | - * | |
| 676 | - * @return bool | |
| 677 | - */ | |
| 678 | - static function is_api_result_object( $result, $required_property = null ) { | |
| 679 | - return ( | |
| 680 | - is_object( $result ) && | |
| 681 | - ! isset( $result->error ) && | |
| 682 | - ( empty( $required_property ) || isset( $result->{$required_property} ) ) | |
| 683 | - ); | |
| 684 | - } | |
| 685 | - | |
| 686 | - /** | |
| 687 | - * Checks if given API result is a non-empty entity object with non-empty ID. | |
| 688 | - * | |
| 689 | - * @author Vova Feldman (@svovaf) | |
| 690 | - * @since 1.2.1.5 | |
| 691 | - * | |
| 692 | - * @param mixed $result | |
| 693 | - * | |
| 694 | - * @return bool | |
| 695 | - */ | |
| 696 | - static function is_api_result_entity( $result ) { | |
| 697 | - return self::is_api_result_object( $result, 'id' ) && | |
| 698 | - FS_Entity::is_valid_id( $result->id ); | |
| 699 | - } | |
| 700 | - | |
| 701 | - /** | |
| 702 | - * Get API result error code. If failed to get code, returns an empty string. | |
| 703 | - * | |
| 704 | - * @author Vova Feldman (@svovaf) | |
| 705 | - * @since 2.0.0 | |
| 706 | - * | |
| 707 | - * @param mixed $result | |
| 708 | - * | |
| 709 | - * @return string | |
| 710 | - */ | |
| 711 | - static function get_error_code( $result ) { | |
| 712 | - if ( is_object( $result ) && | |
| 713 | - isset( $result->error ) && | |
| 714 | - is_object( $result->error ) && | |
| 715 | - ! empty( $result->error->code ) | |
| 716 | - ) { | |
| 717 | - return $result->error->code; | |
| 718 | - } | |
| 719 | - | |
| 720 | - return ''; | |
| 721 | - } | |
| 722 | - | |
| 723 | - #endregion | |
| 1 | +<?php | |
| 2 | + /** | |
| 3 | + * @package Freemius | |
| 4 | + * @copyright Copyright (c) 2015, Freemius, Inc. | |
| 5 | + * @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3 | |
| 6 | + * @since 1.0.4 | |
| 7 | + */ | |
| 8 | + | |
| 9 | + if ( ! defined( 'ABSPATH' ) ) { | |
| 10 | + exit; | |
| 11 | + } | |
| 12 | + | |
| 13 | + /** | |
| 14 | + * Class FS_Api | |
| 15 | + * | |
| 16 | + * Wraps Freemius API SDK to handle: | |
| 17 | + * 1. Clock sync. | |
| 18 | + * 2. Fallback to HTTP when HTTPS fails. | |
| 19 | + * 3. Adds caching layer to GET requests. | |
| 20 | + * 4. Adds consistency for failed requests by using last cached version. | |
| 21 | + */ | |
| 22 | + class FS_Api { | |
| 23 | + /** | |
| 24 | + * @var FS_Api[] | |
| 25 | + */ | |
| 26 | + private static $_instances = array(); | |
| 27 | + | |
| 28 | + /** | |
| 29 | + * @var FS_Option_Manager Freemius options, options-manager. | |
| 30 | + */ | |
| 31 | + private static $_options; | |
| 32 | + | |
| 33 | + /** | |
| 34 | + * @var FS_Cache_Manager API Caching layer | |
| 35 | + */ | |
| 36 | + private static $_cache; | |
| 37 | + | |
| 38 | + /** | |
| 39 | + * @var int Clock diff in seconds between current server to API server. | |
| 40 | + */ | |
| 41 | + private static $_clock_diff; | |
| 42 | + | |
| 43 | + /** | |
| 44 | + * @var Freemius_Api_WordPress | |
| 45 | + */ | |
| 46 | + private $_api; | |
| 47 | + | |
| 48 | + /** | |
| 49 | + * @var string | |
| 50 | + */ | |
| 51 | + private $_slug; | |
| 52 | + | |
| 53 | + /** | |
| 54 | + * @var FS_Logger | |
| 55 | + * @since 1.0.4 | |
| 56 | + */ | |
| 57 | + private $_logger; | |
| 58 | + | |
| 59 | + /** | |
| 60 | + * @author Leo Fajardo (@leorw) | |
| 61 | + * @since 2.3.0 | |
| 62 | + * | |
| 63 | + * @var string | |
| 64 | + */ | |
| 65 | + private $_sdk_version; | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * @author Leo Fajardo (@leorw) | |
| 69 | + * @since 2.5.0 | |
| 70 | + * | |
| 71 | + * @var string | |
| 72 | + */ | |
| 73 | + private $_url; | |
| 74 | + | |
| 75 | + /** | |
| 76 | + * @param string $slug | |
| 77 | + * @param string $scope 'app', 'developer', 'user' or 'install'. | |
| 78 | + * @param number $id Element's id. | |
| 79 | + * @param string $public_key Public key. | |
| 80 | + * @param bool $is_sandbox | |
| 81 | + * @param bool|string $secret_key Element's secret key. | |
| 82 | + * @param null|string $sdk_version | |
| 83 | + * @param null|string $url | |
| 84 | + * | |
| 85 | + * @return FS_Api | |
| 86 | + */ | |
| 87 | + static function instance( | |
| 88 | + $slug, | |
| 89 | + $scope, | |
| 90 | + $id, | |
| 91 | + $public_key, | |
| 92 | + $is_sandbox, | |
| 93 | + $secret_key = false, | |
| 94 | + $sdk_version = null, | |
| 95 | + $url = null | |
| 96 | + ) { | |
| 97 | + $identifier = md5( $slug . $scope . $id . $public_key . ( is_string( $secret_key ) ? $secret_key : '' ) . json_encode( $is_sandbox ) ); | |
| 98 | + | |
| 99 | + if ( ! isset( self::$_instances[ $identifier ] ) ) { | |
| 100 | + self::_init(); | |
| 101 | + | |
| 102 | + self::$_instances[ $identifier ] = new FS_Api( $slug, $scope, $id, $public_key, $secret_key, $is_sandbox, $sdk_version, $url ); | |
| 103 | + } | |
| 104 | + | |
| 105 | + return self::$_instances[ $identifier ]; | |
| 106 | + } | |
| 107 | + | |
| 108 | + private static function _init() { | |
| 109 | + if ( isset( self::$_options ) ) { | |
| 110 | + return; | |
| 111 | + } | |
| 112 | + | |
| 113 | + if ( ! class_exists( 'Freemius_Api_WordPress' ) ) { | |
| 114 | + require_once WP_FS__DIR_SDK . '/FreemiusWordPress.php'; | |
| 115 | + } | |
| 116 | + | |
| 117 | + self::$_options = FS_Option_Manager::get_manager( WP_FS__OPTIONS_OPTION_NAME, true, true ); | |
| 118 | + self::$_cache = FS_Cache_Manager::get_manager( WP_FS__API_CACHE_OPTION_NAME ); | |
| 119 | + | |
| 120 | + self::$_clock_diff = self::$_options->get_option( 'api_clock_diff', 0 ); | |
| 121 | + Freemius_Api_WordPress::SetClockDiff( self::$_clock_diff ); | |
| 122 | + | |
| 123 | + if ( self::$_options->get_option( 'api_force_http', false ) ) { | |
| 124 | + Freemius_Api_WordPress::SetHttp(); | |
| 125 | + } | |
| 126 | + } | |
| 127 | + | |
| 128 | + /** | |
| 129 | + * @param string $slug | |
| 130 | + * @param string $scope 'app', 'developer', 'user' or 'install'. | |
| 131 | + * @param number $id Element's id. | |
| 132 | + * @param string $public_key Public key. | |
| 133 | + * @param bool|string $secret_key Element's secret key. | |
| 134 | + * @param bool $is_sandbox | |
| 135 | + * @param null|string $sdk_version | |
| 136 | + * @param null|string $url | |
| 137 | + */ | |
| 138 | + private function __construct( | |
| 139 | + $slug, | |
| 140 | + $scope, | |
| 141 | + $id, | |
| 142 | + $public_key, | |
| 143 | + $secret_key, | |
| 144 | + $is_sandbox, | |
| 145 | + $sdk_version, | |
| 146 | + $url | |
| 147 | + ) { | |
| 148 | + $this->_api = new Freemius_Api_WordPress( $scope, $id, $public_key, $secret_key, $is_sandbox ); | |
| 149 | + | |
| 150 | + $this->_slug = $slug; | |
| 151 | + $this->_sdk_version = $sdk_version; | |
| 152 | + $this->_url = $url; | |
| 153 | + $this->_logger = FS_Logger::get_logger( WP_FS__SLUG . '_' . $slug . '_api', WP_FS__DEBUG_SDK, WP_FS__ECHO_DEBUG_SDK ); | |
| 154 | + } | |
| 155 | + | |
| 156 | + /** | |
| 157 | + * Find clock diff between server and API server, and store the diff locally. | |
| 158 | + * | |
| 159 | + * @param bool|int $diff | |
| 160 | + * | |
| 161 | + * @return bool|int False if clock diff didn't change, otherwise returns the clock diff in seconds. | |
| 162 | + */ | |
| 163 | + private function _sync_clock_diff( $diff = false ) { | |
| 164 | + $this->_logger->entrance(); | |
| 165 | + | |
| 166 | + // Sync clock and store. | |
| 167 | + $new_clock_diff = ( false === $diff ) ? | |
| 168 | + Freemius_Api_WordPress::FindClockDiff() : | |
| 169 | + $diff; | |
| 170 | + | |
| 171 | + if ( $new_clock_diff === self::$_clock_diff ) { | |
| 172 | + return false; | |
| 173 | + } | |
| 174 | + | |
| 175 | + self::$_clock_diff = $new_clock_diff; | |
| 176 | + | |
| 177 | + // Update API clock's diff. | |
| 178 | + Freemius_Api_WordPress::SetClockDiff( self::$_clock_diff ); | |
| 179 | + | |
| 180 | + // Store new clock diff in storage. | |
| 181 | + self::$_options->set_option( 'api_clock_diff', self::$_clock_diff, true ); | |
| 182 | + | |
| 183 | + return $new_clock_diff; | |
| 184 | + } | |
| 185 | + | |
| 186 | + /** | |
| 187 | + * Override API call to enable retry with servers' clock auto sync method. | |
| 188 | + * | |
| 189 | + * @param string $path | |
| 190 | + * @param string $method | |
| 191 | + * @param array $params | |
| 192 | + * @param bool $in_retry Is in retry or first call attempt. | |
| 193 | + * | |
| 194 | + * @return array|mixed|string|void | |
| 195 | + */ | |
| 196 | + private function _call( $path, $method = 'GET', $params = array(), $in_retry = false ) { | |
| 197 | + $this->_logger->entrance( $method . ':' . $path ); | |
| 198 | + | |
| 199 | + $force_http = ( ! $in_retry && self::$_options->get_option( 'api_force_http', false ) ); | |
| 200 | + | |
| 201 | + if ( self::is_temporary_down() ) { | |
| 202 | + $result = $this->get_temporary_unavailable_error(); | |
| 203 | + } else { | |
| 204 | + /** | |
| 205 | + * @since 2.3.0 Include the SDK version with all API requests that going through the API manager. IMPORTANT: Only pass the SDK version if the caller didn't include it yet. | |
| 206 | + */ | |
| 207 | + if ( ! empty( $this->_sdk_version ) ) { | |
| 208 | + if ( false === strpos( $path, 'sdk_version=' ) && | |
| 209 | + ! isset( $params['sdk_version'] ) | |
| 210 | + ) { | |
| 211 | + // Always add the sdk_version param in the querystring. DO NOT INCLUDE IT IN THE BODY PARAMS, OTHERWISE, IT MAY LEAD TO AN UNEXPECTED PARAMS PARSING IN CASES WHERE THE $params IS A REGULAR NON-ASSOCIATIVE ARRAY. | |
| 212 | + $path = add_query_arg( 'sdk_version', $this->_sdk_version, $path ); | |
| 213 | + } | |
| 214 | + } | |
| 215 | + | |
| 216 | + /** | |
| 217 | + * @since 2.5.0 Include the site's URL, if available, in all API requests that are going through the API manager. | |
| 218 | + */ | |
| 219 | + if ( ! empty( $this->_url ) ) { | |
| 220 | + if ( false === strpos( $path, 'url=' ) && | |
| 221 | + ! isset( $params['url'] ) | |
| 222 | + ) { | |
| 223 | + $path = add_query_arg( 'url', $this->_url, $path ); | |
| 224 | + } | |
| 225 | + } | |
| 226 | + | |
| 227 | + $result = $this->_api->Api( $path, $method, $params ); | |
| 228 | + | |
| 229 | + if ( | |
| 230 | + ! $in_retry && | |
| 231 | + null !== $result && | |
| 232 | + isset( $result->error ) && | |
| 233 | + isset( $result->error->code ) | |
| 234 | + ) { | |
| 235 | + $retry = false; | |
| 236 | + | |
| 237 | + if ( 'request_expired' === $result->error->code ) { | |
| 238 | + $diff = isset( $result->error->timestamp ) ? | |
| 239 | + ( time() - strtotime( $result->error->timestamp ) ) : | |
| 240 | + false; | |
| 241 | + | |
| 242 | + // Try to sync clock diff. | |
| 243 | + if ( false !== $this->_sync_clock_diff( $diff ) ) { | |
| 244 | + // Retry call with new synced clock. | |
| 245 | + $retry = true; | |
| 246 | + } | |
| 247 | + } else if ( | |
| 248 | + Freemius_Api_WordPress::IsHttps() && | |
| 249 | + FS_Api::is_ssl_error_response( $result ) | |
| 250 | + ) { | |
| 251 | + $force_http = true; | |
| 252 | + $retry = true; | |
| 253 | + } | |
| 254 | + | |
| 255 | + if ( $retry ) { | |
| 256 | + if ( $force_http ) { | |
| 257 | + $this->toggle_force_http( true ); | |
| 258 | + } | |
| 259 | + | |
| 260 | + $result = $this->_call( $path, $method, $params, true ); | |
| 261 | + } | |
| 262 | + } | |
| 263 | + } | |
| 264 | + | |
| 265 | + if ( self::is_api_error( $result ) ) { | |
| 266 | + if ( $this->_logger->is_on() ) { | |
| 267 | + // Log API errors. | |
| 268 | + $this->_logger->api_error( $result ); | |
| 269 | + } | |
| 270 | + | |
| 271 | + if ( $force_http ) { | |
| 272 | + $this->toggle_force_http( false ); | |
| 273 | + } | |
| 274 | + } | |
| 275 | + | |
| 276 | + return $result; | |
| 277 | + } | |
| 278 | + | |
| 279 | + /** | |
| 280 | + * Override API call to wrap it in servers' clock sync method. | |
| 281 | + * | |
| 282 | + * @param string $path | |
| 283 | + * @param string $method | |
| 284 | + * @param array $params | |
| 285 | + * | |
| 286 | + * @return array|mixed|string|void | |
| 287 | + * @throws Freemius_Exception | |
| 288 | + */ | |
| 289 | + function call( $path, $method = 'GET', $params = array() ) { | |
| 290 | + return $this->_call( $path, $method, $params ); | |
| 291 | + } | |
| 292 | + | |
| 293 | + /** | |
| 294 | + * Get API request URL signed via query string. | |
| 295 | + * | |
| 296 | + * @param string $path | |
| 297 | + * | |
| 298 | + * @return string | |
| 299 | + */ | |
| 300 | + function get_signed_url( $path ) { | |
| 301 | + return $this->_api->GetSignedUrl( $path ); | |
| 302 | + } | |
| 303 | + | |
| 304 | + /** | |
| 305 | + * @param string $path | |
| 306 | + * @param bool $flush | |
| 307 | + * @param int $expiration (optional) Time until expiration in seconds from now, defaults to 24 hours | |
| 308 | + * | |
| 309 | + * @return stdClass|mixed | |
| 310 | + */ | |
| 311 | + function get( $path = '/', $flush = false, $expiration = WP_FS__TIME_24_HOURS_IN_SEC ) { | |
| 312 | + $this->_logger->entrance( $path ); | |
| 313 | + | |
| 314 | + $cache_key = $this->get_cache_key( $path ); | |
| 315 | + | |
| 316 | + // Always flush during development. | |
| 317 | + if ( WP_FS__DEV_MODE || $this->_api->IsSandbox() ) { | |
| 318 | + $flush = true; | |
| 319 | + } | |
| 320 | + | |
| 321 | + $cached_result = self::$_cache->get( $cache_key ); | |
| 322 | + | |
| 323 | + if ( $flush || ! self::$_cache->has_valid( $cache_key, $expiration ) ) { | |
| 324 | + $result = $this->call( $path ); | |
| 325 | + | |
| 326 | + if ( ! is_object( $result ) || isset( $result->error ) ) { | |
| 327 | + // Api returned an error. | |
| 328 | + if ( is_object( $cached_result ) && | |
| 329 | + ! isset( $cached_result->error ) | |
| 330 | + ) { | |
| 331 | + // If there was an error during a newer data fetch, | |
| 332 | + // fallback to older data version. | |
| 333 | + $result = $cached_result; | |
| 334 | + | |
| 335 | + if ( $this->_logger->is_on() ) { | |
| 336 | + $this->_logger->warn( 'Fallback to cached API result: ' . var_export( $cached_result, true ) ); | |
| 337 | + } | |
| 338 | + } else { | |
| 339 | + if ( is_object( $result ) && isset( $result->error->http ) && 404 == $result->error->http ) { | |
| 340 | + /** | |
| 341 | + * If the response code is 404, cache the result for half of the `$expiration`. | |
| 342 | + * | |
| 343 | + * @author Leo Fajardo (@leorw) | |
| 344 | + * @since 2.2.4 | |
| 345 | + */ | |
| 346 | + $expiration /= 2; | |
| 347 | + } else { | |
| 348 | + // If no older data version and the response code is not 404, return result without | |
| 349 | + // caching the error. | |
| 350 | + return $result; | |
| 351 | + } | |
| 352 | + } | |
| 353 | + } | |
| 354 | + | |
| 355 | + self::$_cache->set( $cache_key, $result, $expiration ); | |
| 356 | + | |
| 357 | + $cached_result = $result; | |
| 358 | + } else { | |
| 359 | + $this->_logger->log( 'Using cached API result.' ); | |
| 360 | + } | |
| 361 | + | |
| 362 | + return $cached_result; | |
| 363 | + } | |
| 364 | + | |
| 365 | + /** | |
| 366 | + * @todo Remove this method after migrating Freemius::safe_remote_post() to FS_Api::call(). | |
| 367 | + * | |
| 368 | + * @author Leo Fajardo (@leorw) | |
| 369 | + * @since 2.5.4 | |
| 370 | + * | |
| 371 | + * @param string $url | |
| 372 | + * @param array $remote_args | |
| 373 | + * | |
| 374 | + * @return array|WP_Error The response array or a WP_Error on failure. | |
| 375 | + */ | |
| 376 | + static function remote_request( $url, $remote_args ) { | |
| 377 | + if ( ! class_exists( 'Freemius_Api_WordPress' ) ) { | |
| 378 | + require_once WP_FS__DIR_SDK . '/FreemiusWordPress.php'; | |
| 379 | + } | |
| 380 | + | |
| 381 | + if ( method_exists( 'Freemius_Api_WordPress', 'RemoteRequest' ) ) { | |
| 382 | + return Freemius_Api_WordPress::RemoteRequest( $url, $remote_args ); | |
| 383 | + } | |
| 384 | + | |
| 385 | + // The following is for backward compatibility when a modified PHP SDK version is in use and the `Freemius_Api_WordPress:RemoteRequest()` method doesn't exist. | |
| 386 | + $response = wp_remote_request( $url, $remote_args ); | |
| 387 | + | |
| 388 | + if ( | |
| 389 | + is_array( $response ) && | |
| 390 | + ( | |
| 391 | + empty( $response['headers'] ) || | |
| 392 | + empty( $response['headers']['x-api-server'] ) | |
| 393 | + ) | |
| 394 | + ) { | |
| 395 | + // API is considered blocked if the response doesn't include the `x-api-server` header. When there's no error but this header doesn't exist, the response is usually not in the expected form (e.g., cannot be JSON-decoded). | |
| 396 | + $response = new WP_Error( 'api_blocked', htmlentities( $response['body'] ) ); | |
| 397 | + } | |
| 398 | + | |
| 399 | + return $response; | |
| 400 | + } | |
| 401 | + | |
| 402 | + /** | |
| 403 | + * Check if there's a cached version of the API request. | |
| 404 | + * | |
| 405 | + * @author Vova Feldman (@svovaf) | |
| 406 | + * @since 1.2.1 | |
| 407 | + * | |
| 408 | + * @param string $path | |
| 409 | + * @param string $method | |
| 410 | + * @param array $params | |
| 411 | + * | |
| 412 | + * @return bool | |
| 413 | + */ | |
| 414 | + function is_cached( $path, $method = 'GET', $params = array() ) { | |
| 415 | + $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 416 | + | |
| 417 | + return self::$_cache->has_valid( $cache_key ); | |
| 418 | + } | |
| 419 | + | |
| 420 | + /** | |
| 421 | + * Invalidate a cached version of the API request. | |
| 422 | + * | |
| 423 | + * @author Vova Feldman (@svovaf) | |
| 424 | + * @since 1.2.1.5 | |
| 425 | + * | |
| 426 | + * @param string $path | |
| 427 | + * @param string $method | |
| 428 | + * @param array $params | |
| 429 | + */ | |
| 430 | + function purge_cache( $path, $method = 'GET', $params = array() ) { | |
| 431 | + $this->_logger->entrance( "{$method}:{$path}" ); | |
| 432 | + | |
| 433 | + $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 434 | + | |
| 435 | + self::$_cache->purge( $cache_key ); | |
| 436 | + } | |
| 437 | + | |
| 438 | + /** | |
| 439 | + * Invalidate a cached version of the API request. | |
| 440 | + * | |
| 441 | + * @author Vova Feldman (@svovaf) | |
| 442 | + * @since 2.0.0 | |
| 443 | + * | |
| 444 | + * @param string $path | |
| 445 | + * @param int $expiration | |
| 446 | + * @param string $method | |
| 447 | + * @param array $params | |
| 448 | + */ | |
| 449 | + function update_cache_expiration( $path, $expiration = WP_FS__TIME_24_HOURS_IN_SEC, $method = 'GET', $params = array() ) { | |
| 450 | + $this->_logger->entrance( "{$method}:{$path}:{$expiration}" ); | |
| 451 | + | |
| 452 | + $cache_key = $this->get_cache_key( $path, $method, $params ); | |
| 453 | + | |
| 454 | + self::$_cache->update_expiration( $cache_key, $expiration ); | |
| 455 | + } | |
| 456 | + | |
| 457 | + /** | |
| 458 | + * @param string $path | |
| 459 | + * @param string $method | |
| 460 | + * @param array $params | |
| 461 | + * | |
| 462 | + * @return string | |
| 463 | + * @throws \Freemius_Exception | |
| 464 | + */ | |
| 465 | + private function get_cache_key( $path, $method = 'GET', $params = array() ) { | |
| 466 | + $canonized = $this->_api->CanonizePath( $path ); | |
| 467 | +// $exploded = explode('/', $canonized); | |
| 468 | +// return $method . '_' . array_pop($exploded) . '_' . md5($canonized . json_encode($params)); | |
| 469 | + return strtolower( $method . ':' . $canonized ) . ( ! empty( $params ) ? '#' . md5( json_encode( $params ) ) : '' ); | |
| 470 | + } | |
| 471 | + | |
| 472 | + /** | |
| 473 | + * @author Leo Fajardo (@leorw) | |
| 474 | + * @since 2.5.4 | |
| 475 | + * | |
| 476 | + * @param bool $is_http | |
| 477 | + */ | |
| 478 | + private function toggle_force_http( $is_http ) { | |
| 479 | + self::$_options->set_option( 'api_force_http', $is_http, true ); | |
| 480 | + | |
| 481 | + if ( $is_http ) { | |
| 482 | + Freemius_Api_WordPress::SetHttp(); | |
| 483 | + } else if ( method_exists( 'Freemius_Api_WordPress', 'SetHttps' ) ) { | |
| 484 | + Freemius_Api_WordPress::SetHttps(); | |
| 485 | + } | |
| 486 | + } | |
| 487 | + | |
| 488 | + /** | |
| 489 | + * @author Leo Fajardo (@leorw) | |
| 490 | + * @since 2.5.4 | |
| 491 | + * | |
| 492 | + * @param mixed $response | |
| 493 | + * | |
| 494 | + * @return bool | |
| 495 | + */ | |
| 496 | + static function is_blocked( $response ) { | |
| 497 | + return ( | |
| 498 | + self::is_api_error_object( $response, true ) && | |
| 499 | + isset( $response->error->code ) && | |
| 500 | + 'api_blocked' === $response->error->code | |
| 501 | + ); | |
| 502 | + } | |
| 503 | + | |
| 504 | + /** | |
| 505 | + * Check if API is temporary down. | |
| 506 | + * | |
| 507 | + * @author Vova Feldman (@svovaf) | |
| 508 | + * @since 1.1.6 | |
| 509 | + * | |
| 510 | + * @return bool | |
| 511 | + */ | |
| 512 | + static function is_temporary_down() { | |
| 513 | + self::_init(); | |
| 514 | + | |
| 515 | + $test = self::$_cache->get_valid( 'ping_test', null ); | |
| 516 | + | |
| 517 | + return ( false === $test ); | |
| 518 | + } | |
| 519 | + | |
| 520 | + /** | |
| 521 | + * @author Vova Feldman (@svovaf) | |
| 522 | + * @since 1.1.6 | |
| 523 | + * | |
| 524 | + * @return object | |
| 525 | + */ | |
| 526 | + private function get_temporary_unavailable_error() { | |
| 527 | + return (object) array( | |
| 528 | + 'error' => (object) array( | |
| 529 | + 'type' => 'TemporaryUnavailable', | |
| 530 | + 'message' => 'API is temporary unavailable, please retry in ' . ( self::$_cache->get_record_expiration( 'ping_test' ) - WP_FS__SCRIPT_START_TIME ) . ' sec.', | |
| 531 | + 'code' => 'temporary_unavailable', | |
| 532 | + 'http' => 503 | |
| 533 | + ) | |
| 534 | + ); | |
| 535 | + } | |
| 536 | + | |
| 537 | + /** | |
| 538 | + * Check if based on the API result we should try | |
| 539 | + * to re-run the same request with HTTP instead of HTTPS. | |
| 540 | + * | |
| 541 | + * @author Vova Feldman (@svovaf) | |
| 542 | + * @since 1.1.6 | |
| 543 | + * | |
| 544 | + * @param $result | |
| 545 | + * | |
| 546 | + * @return bool | |
| 547 | + */ | |
| 548 | + private static function should_try_with_http( $result ) { | |
| 549 | + if ( ! Freemius_Api_WordPress::IsHttps() ) { | |
| 550 | + return false; | |
| 551 | + } | |
| 552 | + | |
| 553 | + return ( ! is_object( $result ) || | |
| 554 | + ! isset( $result->error ) || | |
| 555 | + ! isset( $result->error->code ) || | |
| 556 | + ! in_array( $result->error->code, array( | |
| 557 | + 'curl_missing', | |
| 558 | + 'cloudflare_ddos_protection', | |
| 559 | + 'maintenance_mode', | |
| 560 | + 'squid_cache_block', | |
| 561 | + 'too_many_requests', | |
| 562 | + ) ) ); | |
| 563 | + | |
| 564 | + } | |
| 565 | + | |
| 566 | + function get_url( $path = '' ) { | |
| 567 | + return Freemius_Api_WordPress::GetUrl( $path, $this->_api->IsSandbox() ); | |
| 568 | + } | |
| 569 | + | |
| 570 | + /** | |
| 571 | + * Clear API cache. | |
| 572 | + * | |
| 573 | + * @author Vova Feldman (@svovaf) | |
| 574 | + * @since 1.0.9 | |
| 575 | + */ | |
| 576 | + static function clear_cache() { | |
| 577 | + self::_init(); | |
| 578 | + | |
| 579 | + self::$_cache = FS_Cache_Manager::get_manager( WP_FS__API_CACHE_OPTION_NAME ); | |
| 580 | + self::$_cache->clear(); | |
| 581 | + } | |
| 582 | + | |
| 583 | + /** | |
| 584 | + * @author Leo Fajardo (@leorw) | |
| 585 | + * @since 2.5.4 | |
| 586 | + */ | |
| 587 | + static function clear_force_http_flag() { | |
| 588 | + self::$_options->unset_option( 'api_force_http' ); | |
| 589 | + } | |
| 590 | + | |
| 591 | + #---------------------------------------------------------------------------------- | |
| 592 | + #region Error Handling | |
| 593 | + #---------------------------------------------------------------------------------- | |
| 594 | + | |
| 595 | + /** | |
| 596 | + * @author Vova Feldman (@svovaf) | |
| 597 | + * @since 1.2.1.5 | |
| 598 | + * | |
| 599 | + * @param mixed $result | |
| 600 | + * | |
| 601 | + * @return bool Is API result contains an error. | |
| 602 | + */ | |
| 603 | + static function is_api_error( $result ) { | |
| 604 | + return ( is_object( $result ) && isset( $result->error ) ) || | |
| 605 | + is_string( $result ); | |
| 606 | + } | |
| 607 | + | |
| 608 | + /** | |
| 609 | + * @author Vova Feldman (@svovaf) | |
| 610 | + * @since 2.0.0 | |
| 611 | + * | |
| 612 | + * @param mixed $result | |
| 613 | + * @param bool $ignore_message | |
| 614 | + * | |
| 615 | + * @return bool Is API result contains an error. | |
| 616 | + */ | |
| 617 | + static function is_api_error_object( $result, $ignore_message = false ) { | |
| 618 | + return ( | |
| 619 | + is_object( $result ) && | |
| 620 | + isset( $result->error ) && | |
| 621 | + ( $ignore_message || isset( $result->error->message ) ) | |
| 622 | + ); | |
| 623 | + } | |
| 624 | + | |
| 625 | + /** | |
| 626 | + * @author Leo Fajardo (@leorw) | |
| 627 | + * @since 2.5.4 | |
| 628 | + * | |
| 629 | + * @param WP_Error|object|string $response | |
| 630 | + * | |
| 631 | + * @return bool | |
| 632 | + */ | |
| 633 | + static function is_ssl_error_response( $response ) { | |
| 634 | + $http_error = null; | |
| 635 | + | |
| 636 | + if ( $response instanceof WP_Error ) { | |
| 637 | + if ( | |
| 638 | + isset( $response->errors ) && | |
| 639 | + isset( $response->errors['http_request_failed'] ) | |
| 640 | + ) { | |
| 641 | + $http_error = strtolower( $response->errors['http_request_failed'][0] ); | |
| 642 | + } | |
| 643 | + } else if ( | |
| 644 | + self::is_api_error_object( $response ) && | |
| 645 | + ! empty( $response->error->message ) | |
| 646 | + ) { | |
| 647 | + $http_error = $response->error->message; | |
| 648 | + } | |
| 649 | + | |
| 650 | + return ( | |
| 651 | + ! empty( $http_error ) && | |
| 652 | + ( | |
| 653 | + false !== strpos( $http_error, 'curl error 35' ) || | |
| 654 | + ( | |
| 655 | + false === strpos( $http_error, '</html>' ) && | |
| 656 | + false !== strpos( $http_error, 'ssl' ) | |
| 657 | + ) | |
| 658 | + ) | |
| 659 | + ); | |
| 660 | + } | |
| 661 | + | |
| 662 | + /** | |
| 663 | + * Checks if given API result is a non-empty and not an error object. | |
| 664 | + * | |
| 665 | + * @author Vova Feldman (@svovaf) | |
| 666 | + * @since 1.2.1.5 | |
| 667 | + * | |
| 668 | + * @param mixed $result | |
| 669 | + * @param string|null $required_property Optional property we want to verify that is set. | |
| 670 | + * | |
| 671 | + * @return bool | |
| 672 | + */ | |
| 673 | + static function is_api_result_object( $result, $required_property = null ) { | |
| 674 | + return ( | |
| 675 | + is_object( $result ) && | |
| 676 | + ! isset( $result->error ) && | |
| 677 | + ( empty( $required_property ) || isset( $result->{$required_property} ) ) | |
| 678 | + ); | |
| 679 | + } | |
| 680 | + | |
| 681 | + /** | |
| 682 | + * Checks if given API result is a non-empty entity object with non-empty ID. | |
| 683 | + * | |
| 684 | + * @author Vova Feldman (@svovaf) | |
| 685 | + * @since 1.2.1.5 | |
| 686 | + * | |
| 687 | + * @param mixed $result | |
| 688 | + * | |
| 689 | + * @return bool | |
| 690 | + */ | |
| 691 | + static function is_api_result_entity( $result ) { | |
| 692 | + return self::is_api_result_object( $result, 'id' ) && | |
| 693 | + FS_Entity::is_valid_id( $result->id ); | |
| 694 | + } | |
| 695 | + | |
| 696 | + /** | |
| 697 | + * Get API result error code. If failed to get code, returns an empty string. | |
| 698 | + * | |
| 699 | + * @author Vova Feldman (@svovaf) | |
| 700 | + * @since 2.0.0 | |
| 701 | + * | |
| 702 | + * @param mixed $result | |
| 703 | + * | |
| 704 | + * @return string | |
| 705 | + */ | |
| 706 | + static function get_error_code( $result ) { | |
| 707 | + if ( is_object( $result ) && | |
| 708 | + isset( $result->error ) && | |
| 709 | + is_object( $result->error ) && | |
| 710 | + ! empty( $result->error->code ) | |
| 711 | + ) { | |
| 712 | + return $result->error->code; | |
| 713 | + } | |
| 714 | + | |
| 715 | + return ''; | |
| 716 | + } | |
| 717 | + | |
| 718 | + #endregion | |
| 724 | 719 | } |
