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| 1 | <?php |
| 2 | /** |
| 3 | * REST route that installs and switches the plugins behind the Features tab. |
| 4 | * |
| 5 | * @package automattic/my-jetpack |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\My_Jetpack; |
| 9 | |
| 10 | use Automattic\Jetpack\Modules; |
| 11 | use Automattic\Jetpack\Plugins_Installer; |
| 12 | use WP_Error; |
| 13 | use WP_REST_Request; |
| 14 | use WP_REST_Server; |
| 15 | |
| 16 | /** |
| 17 | * Installs, activates and deactivates the plugins and modules in the feature map. |
| 18 | */ |
| 19 | class REST_Main_Features { |
| 20 | |
| 21 | /** |
| 22 | * The namespace these routes live in. |
| 23 | * |
| 24 | * `wpcom/v2` rather than `my-jetpack/v1`, which WordPress.com Simple does not serve — |
| 25 | * and the Features tab runs there too. |
| 26 | */ |
| 27 | const ROUTE_NAMESPACE = 'wpcom/v2'; |
| 28 | |
| 29 | /** |
| 30 | * User meta that keeps the Features tab banner hidden for the user who dismissed it. |
| 31 | */ |
| 32 | const BANNER_DISMISSED_META = 'jetpack_my_jetpack_features_banner_dismissed'; |
| 33 | |
| 34 | /** |
| 35 | * Register the route. |
| 36 | * |
| 37 | * @return void |
| 38 | */ |
| 39 | public function register_rest_routes() { |
| 40 | register_rest_route( |
| 41 | self::ROUTE_NAMESPACE, |
| 42 | 'my-jetpack/site/features', |
| 43 | array( |
| 44 | 'methods' => WP_REST_Server::READABLE, |
| 45 | 'callback' => __CLASS__ . '::get_state', |
| 46 | 'permission_callback' => __CLASS__ . '::permissions_callback', |
| 47 | ) |
| 48 | ); |
| 49 | |
| 50 | register_rest_route( |
| 51 | self::ROUTE_NAMESPACE, |
| 52 | 'my-jetpack/site/features/banner/dismiss', |
| 53 | array( |
| 54 | 'methods' => WP_REST_Server::CREATABLE, |
| 55 | 'callback' => __CLASS__ . '::dismiss_banner', |
| 56 | // Anyone who can see My Jetpack sees the banner, so anyone who can see it may dismiss it. |
| 57 | 'permission_callback' => array( Initializer::class, 'permissions_callback' ), |
| 58 | ) |
| 59 | ); |
| 60 | |
| 61 | register_rest_route( |
| 62 | self::ROUTE_NAMESPACE, |
| 63 | 'my-jetpack/site/features/plugin', |
| 64 | array( |
| 65 | 'methods' => WP_REST_Server::CREATABLE, |
| 66 | 'callback' => __CLASS__ . '::switch_plugin', |
| 67 | 'permission_callback' => __CLASS__ . '::permissions_callback', |
| 68 | 'args' => array( |
| 69 | 'plugin' => array( |
| 70 | 'type' => 'string', |
| 71 | 'required' => true, |
| 72 | // Only plugins the feature map names, never an arbitrary slug. |
| 73 | 'enum' => Main_Features::get_switchable_plugins(), |
| 74 | ), |
| 75 | 'action' => array( |
| 76 | 'type' => 'string', |
| 77 | 'required' => true, |
| 78 | 'enum' => array( 'install', 'activate', 'deactivate' ), |
| 79 | ), |
| 80 | ), |
| 81 | ) |
| 82 | ); |
| 83 | |
| 84 | register_rest_route( |
| 85 | self::ROUTE_NAMESPACE, |
| 86 | 'my-jetpack/site/features/bulk', |
| 87 | array( |
| 88 | 'methods' => WP_REST_Server::CREATABLE, |
| 89 | 'callback' => __CLASS__ . '::switch_many', |
| 90 | 'permission_callback' => __CLASS__ . '::permissions_callback', |
| 91 | 'args' => array( |
| 92 | 'active' => array( |
| 93 | 'type' => 'boolean', |
| 94 | 'required' => true, |
| 95 | ), |
| 96 | 'plugins' => array( |
| 97 | 'type' => 'array', |
| 98 | 'default' => array(), |
| 99 | 'items' => array( |
| 100 | 'type' => 'string', |
| 101 | 'enum' => Main_Features::get_switchable_plugins(), |
| 102 | ), |
| 103 | ), |
| 104 | 'modules' => array( |
| 105 | 'type' => 'array', |
| 106 | 'default' => array(), |
| 107 | 'items' => array( 'type' => 'string' ), |
| 108 | ), |
| 109 | ), |
| 110 | ) |
| 111 | ); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Whoever may activate plugins here may use the route, as with the products routes. |
| 116 | * |
| 117 | * @return bool |
| 118 | */ |
| 119 | public static function permissions_callback() { |
| 120 | return REST_Products::edit_permissions_callback(); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Whether the current user has dismissed the Features tab banner. |
| 125 | * |
| 126 | * @return bool |
| 127 | */ |
| 128 | public static function is_banner_dismissed() { |
| 129 | return (bool) get_user_meta( get_current_user_id(), self::BANNER_DISMISSED_META, true ); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Hide the Features tab banner for the current user, for good. |
| 134 | * |
| 135 | * @return \WP_REST_Response|WP_Error |
| 136 | */ |
| 137 | public static function dismiss_banner() { |
| 138 | // Checked first: update_user_meta() also returns false when the value is unchanged. |
| 139 | if ( ! self::is_banner_dismissed() && ! update_user_meta( get_current_user_id(), self::BANNER_DISMISSED_META, 1 ) ) { |
| 140 | return new WP_Error( 'banner_not_dismissed', __( 'The banner could not be dismissed.', 'jetpack-my-jetpack' ), array( 'status' => 500 ) ); |
| 141 | } |
| 142 | |
| 143 | return rest_ensure_response( true ); |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * The Features tab's state, read fresh from the site. |
| 148 | * |
| 149 | * The page is rendered with a copy of this, but that copy ages: it is a snapshot from |
| 150 | * the load, and anything switched since — here or anywhere else — has moved past it. |
| 151 | * |
| 152 | * @return \WP_REST_Response |
| 153 | */ |
| 154 | public static function get_state() { |
| 155 | return rest_ensure_response( Main_Features::get_state() ); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Install, activate or deactivate one plugin from the feature map. |
| 160 | * |
| 161 | * @param WP_REST_Request $request The request. |
| 162 | * @return \WP_REST_Response|WP_Error The Features tab's fresh state, or an error. |
| 163 | */ |
| 164 | public static function switch_plugin( $request ) { |
| 165 | $slug = $request->get_param( 'plugin' ); |
| 166 | $action = $request->get_param( 'action' ); |
| 167 | |
| 168 | $refused = self::refuse_deactivation( $slug, $action ); |
| 169 | if ( $refused ) { |
| 170 | return $refused; |
| 171 | } |
| 172 | |
| 173 | $refused = 'install' === $action ? self::refuse_install() : null; |
| 174 | if ( $refused ) { |
| 175 | return $refused; |
| 176 | } |
| 177 | |
| 178 | $result = self::run( $slug, $action ); |
| 179 | |
| 180 | if ( is_wp_error( $result ) && 'install' === $action ) { |
| 181 | $result = self::explain_install_error( $result ); |
| 182 | } |
| 183 | |
| 184 | if ( is_wp_error( $result ) ) { |
| 185 | $data = $result->get_error_data(); |
| 186 | |
| 187 | if ( ! is_array( $data ) || ! isset( $data['status'] ) ) { |
| 188 | $result->add_data( array( 'status' => 400 ), $result->get_error_code() ); |
| 189 | } |
| 190 | |
| 191 | return $result; |
| 192 | } |
| 193 | |
| 194 | return rest_ensure_response( Main_Features::get_state() ); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Switch several plugins and modules on or off in one request. |
| 199 | * |
| 200 | * Each is tried in turn and a failure does not stop the rest, so the response carries the |
| 201 | * fresh state together with what could not be switched and why. |
| 202 | * |
| 203 | * @param WP_REST_Request $request The request. |
| 204 | * @return \WP_REST_Response The Features tab's fresh state, and a list of failures. |
| 205 | */ |
| 206 | public static function switch_many( $request ) { |
| 207 | $active = (bool) $request->get_param( 'active' ); |
| 208 | $action = $active ? 'activate' : 'deactivate'; |
| 209 | $failed = array(); |
| 210 | |
| 211 | // Jetpack carries My Jetpack and is never switched off here, so while it is active no |
| 212 | // batch can take this page with it. Without it, any plugin in the batch might be the last |
| 213 | // carrier, and checking them one by one lets a batch switch off every carrier in turn. |
| 214 | $plugins_refused = ! $active && Main_Features::PLUGIN_ACTIVE !== Main_Features::get_plugin_status( Product::JETPACK_PLUGIN_SLUG ) |
| 215 | ? new WP_Error( 'not_allowed', __( 'Plugins can only be deactivated together while the Jetpack plugin is active. Deactivate them one at a time instead.', 'jetpack-my-jetpack' ) ) |
| 216 | : null; |
| 217 | |
| 218 | foreach ( array_unique( (array) $request->get_param( 'plugins' ) ) as $slug ) { |
| 219 | $result = $plugins_refused ? $plugins_refused : self::refuse_deactivation( $slug, $action ); |
| 220 | $result = $result ? $result : self::run( $slug, $action ); |
| 221 | |
| 222 | if ( is_wp_error( $result ) ) { |
| 223 | $failed[] = array( |
| 224 | 'type' => 'plugin', |
| 225 | 'slug' => $slug, |
| 226 | 'message' => $result->get_error_message(), |
| 227 | ); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | $modules_refused = current_user_can( 'jetpack_manage_modules' ) |
| 232 | ? null |
| 233 | : new WP_Error( 'not_allowed', __( 'You are not allowed to manage Jetpack modules on this site.', 'jetpack-my-jetpack' ) ); |
| 234 | |
| 235 | foreach ( array_unique( (array) $request->get_param( 'modules' ) ) as $slug ) { |
| 236 | $result = $modules_refused ? $modules_refused : self::switch_module( $slug, $active ); |
| 237 | |
| 238 | if ( is_wp_error( $result ) ) { |
| 239 | $failed[] = array( |
| 240 | 'type' => 'module', |
| 241 | 'slug' => $slug, |
| 242 | 'message' => $result->get_error_message(), |
| 243 | ); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | return rest_ensure_response( |
| 248 | array( |
| 249 | 'state' => Main_Features::get_state(), |
| 250 | 'failed' => $failed, |
| 251 | ) |
| 252 | ); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Switch one Jetpack module, with the checks Jetpack's own module route makes. |
| 257 | * |
| 258 | * @param string $slug Module slug. |
| 259 | * @param bool $active Whether to switch it on. |
| 260 | * @return true|WP_Error |
| 261 | */ |
| 262 | private static function switch_module( $slug, $active ) { |
| 263 | $modules = new Modules(); |
| 264 | |
| 265 | // Not is_module(): with no modules on offer, its allow-list is skipped and any slug passes. |
| 266 | if ( ! in_array( $slug, (array) $modules->get_available(), true ) ) { |
| 267 | return new WP_Error( 'not_found', __( 'That Jetpack module was not found.', 'jetpack-my-jetpack' ) ); |
| 268 | } |
| 269 | |
| 270 | // Already where it was asked to be: nothing to do, as with plugins above. |
| 271 | if ( $modules->is_active( $slug ) === $active ) { |
| 272 | return true; |
| 273 | } |
| 274 | |
| 275 | // Gotcha: activate() still redirects and exits when a legacy plugin it replaces (such as |
| 276 | // stats/stats.php) is active, which ends this request, as it does Jetpack's own route. |
| 277 | $switched = $active ? $modules->activate( $slug, false, false ) : $modules->deactivate( $slug ); |
| 278 | |
| 279 | // Saved, but a jetpack_active_modules callback can still hold it where it was. |
| 280 | if ( ( $switched || ! $active ) && $modules->is_active( $slug ) !== $active ) { |
| 281 | return $active |
| 282 | ? new WP_Error( 'module_forced', __( 'Stays off: disabled by your host or site administrator.', 'jetpack-my-jetpack' ) ) |
| 283 | : new WP_Error( 'module_forced', __( 'Stays on: enabled by your host or site administrator.', 'jetpack-my-jetpack' ) ); |
| 284 | } |
| 285 | |
| 286 | // Read after a feature name, alone or in a list; a retry rarely helps, so none is offered. |
| 287 | if ( ! $switched ) { |
| 288 | return $active |
| 289 | ? new WP_Error( 'switch_failed', __( 'Could not be switched on. It may need a Jetpack connection, or a plan that includes it.', 'jetpack-my-jetpack' ) ) |
| 290 | : new WP_Error( 'switch_failed', __( 'Could not be switched off.', 'jetpack-my-jetpack' ) ); |
| 291 | } |
| 292 | |
| 293 | return true; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Refuse an install the current user can't make, saying whether the site or their role is why. |
| 298 | * |
| 299 | * @return WP_Error|null The refusal, or null when the install may go ahead. |
| 300 | */ |
| 301 | private static function refuse_install() { |
| 302 | switch ( Main_Features::get_install_access() ) { |
| 303 | case Main_Features::INSTALLS_DISABLED: |
| 304 | return new WP_Error( |
| 305 | 'install_disabled', |
| 306 | __( 'Plugin installs are turned off on this site. Ask your host or site administrator to install it.', 'jetpack-my-jetpack' ), |
| 307 | array( 'status' => 403 ) |
| 308 | ); |
| 309 | |
| 310 | case Main_Features::INSTALLS_NOT_PERMITTED: |
| 311 | return new WP_Error( |
| 312 | 'not_allowed', |
| 313 | __( 'Your account can’t install plugins on this site. Ask a site administrator to install it.', 'jetpack-my-jetpack' ), |
| 314 | array( 'status' => 403 ) |
| 315 | ); |
| 316 | |
| 317 | default: |
| 318 | return null; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Say what to do about an install that failed, where the installer's own message doesn't. |
| 324 | * |
| 325 | * @param WP_Error $error What the installer returned. |
| 326 | * @return WP_Error The same error, reworded when it is a download or filesystem failure. |
| 327 | */ |
| 328 | private static function explain_install_error( WP_Error $error ) { |
| 329 | $code = (string) $error->get_error_code(); |
| 330 | |
| 331 | // Plugins_Installer reports a failed download as no_package. |
| 332 | if ( in_array( $code, array( 'no_package', 'download_failed' ), true ) ) { |
| 333 | $message = __( 'The plugin could not be downloaded from WordPress.org. Check that your site can reach WordPress.org, then try again.', 'jetpack-my-jetpack' ); |
| 334 | } elseif ( preg_match( '/^(fs_|mkdir_failed|copy_failed)/', $code ) ) { |
| 335 | $message = __( 'WordPress could not write to this site’s plugins folder. Install it from the Plugins screen instead, or ask your host for help.', 'jetpack-my-jetpack' ); |
| 336 | } else { |
| 337 | return $error; |
| 338 | } |
| 339 | |
| 340 | return new WP_Error( $code, $message, array( 'status' => 400 ) ); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Refuse to switch off Jetpack, or the plugin serving this page when nothing else carries My Jetpack. |
| 345 | * |
| 346 | * @param string $slug WordPress.org plugin slug. |
| 347 | * @param string $action One of install, activate or deactivate. |
| 348 | * @return WP_Error|null The refusal, or null when the action may go ahead. |
| 349 | */ |
| 350 | private static function refuse_deactivation( $slug, $action ) { |
| 351 | if ( 'deactivate' !== $action ) { |
| 352 | return null; |
| 353 | } |
| 354 | |
| 355 | // The autoloader picks one of the active carriers, so the one serving this request is |
| 356 | // refused only when nothing else could take over on the next load. |
| 357 | if ( Product::JETPACK_PLUGIN_SLUG === $slug |
| 358 | || ( Main_Features::is_hosting_plugin( $slug ) |
| 359 | && Main_Features::is_only_my_jetpack_provider( Main_Features::get_hosting_plugin_slug() ) ) ) { |
| 360 | return new WP_Error( |
| 361 | 'not_allowed', |
| 362 | __( 'This plugin runs the page you are on, so it cannot be deactivated from here.', 'jetpack-my-jetpack' ), |
| 363 | array( 'status' => 400 ) |
| 364 | ); |
| 365 | } |
| 366 | |
| 367 | return null; |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Carry out the action on the plugin, through the product that owns it where there is one. |
| 372 | * |
| 373 | * @param string $slug WordPress.org plugin slug. |
| 374 | * @param string $action One of install, activate or deactivate. |
| 375 | * @return true|WP_Error |
| 376 | */ |
| 377 | private static function run( $slug, $action ) { |
| 378 | if ( ! function_exists( 'activate_plugin' ) ) { |
| 379 | require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
| 380 | } |
| 381 | |
| 382 | $product_class = Main_Features::get_product_class_for_plugin( $slug ); |
| 383 | $file = Main_Features::get_plugin_file( $slug, $product_class ); |
| 384 | |
| 385 | if ( 'deactivate' === $action ) { |
| 386 | if ( ! $file ) { |
| 387 | return new WP_Error( 'not_installed', __( 'That plugin is not installed.', 'jetpack-my-jetpack' ) ); |
| 388 | } |
| 389 | |
| 390 | // The product knows what else it switched on, such as the Jetpack module behind it. |
| 391 | if ( $product_class ) { |
| 392 | $deactivated = $product_class::deactivate(); |
| 393 | return is_wp_error( $deactivated ) ? $deactivated : true; |
| 394 | } |
| 395 | |
| 396 | deactivate_plugins( $file ); |
| 397 | return true; |
| 398 | } |
| 399 | |
| 400 | // Already on: nothing to do, and re-running the product's activation step would |
| 401 | // reset what it set the first time — Boost's jb_get_started, Search's Instant |
| 402 | // Search. Reachable whenever a request is retried. |
| 403 | if ( $file && Main_Features::PLUGIN_ACTIVE === Main_Features::get_plugin_status( $slug, $product_class ) ) { |
| 404 | return true; |
| 405 | } |
| 406 | |
| 407 | // Installing what is already here would put a second copy beside it, which is what |
| 408 | // a plugin in a -dev folder looks like to a lookup by slug. |
| 409 | if ( 'install' === $action && ! $file ) { |
| 410 | $installed = Plugins_Installer::install_and_activate_plugin( $slug ); |
| 411 | |
| 412 | if ( is_wp_error( $installed ) ) { |
| 413 | return $installed; |
| 414 | } |
| 415 | } else { |
| 416 | if ( ! $file ) { |
| 417 | return new WP_Error( 'not_installed', __( 'That plugin is not installed.', 'jetpack-my-jetpack' ) ); |
| 418 | } |
| 419 | |
| 420 | $activated = activate_plugin( $file ); |
| 421 | |
| 422 | if ( is_wp_error( $activated ) ) { |
| 423 | return $activated; |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | // A plugin alone is not the whole product: Search still has to switch Instant Search |
| 428 | // on, Boost to mark itself started, and the Hybrid products to enable their module. |
| 429 | // A refusal is not fatal here — the plugin is on either way, so failing the request |
| 430 | // would contradict the state it returns and invite a retry of what already happened. |
| 431 | if ( $product_class ) { |
| 432 | $product_class::do_product_specific_activation( true ); |
| 433 | } |
| 434 | |
| 435 | return true; |
| 436 | } |
| 437 | } |