jetpack
/
extensions
/
blocks
/
premium-content
/
_inc
/
subscription-service
/
class-abstract-token-subscription-service.php
class-abstract-token-subscription-service.php in Jetpack – WP Security, Backup, Speed, & Growth 16.3-beta, at extensions/blocks/premium-content/_inc/subscription-service/class-abstract-token-subscription-service.php
| 1 | <?php |
| 2 | /** |
| 3 | * A paywall that exchanges JWT tokens from WordPress.com to allow |
| 4 | * a current visitor to view content that has been deemed "Premium content". |
| 5 | * |
| 6 | * @package Automattic\Jetpack\Extensions\Premium_Content |
| 7 | */ |
| 8 | |
| 9 | namespace Automattic\Jetpack\Extensions\Premium_Content\Subscription_Service; |
| 10 | |
| 11 | use Automattic\Jetpack\Extensions\Premium_Content\JWT; |
| 12 | use WP_Error; |
| 13 | use WP_Post; |
| 14 | use const Automattic\Jetpack\Extensions\Subscriptions\META_NAME_FOR_POST_TIER_ID_SETTINGS; |
| 15 | |
| 16 | if ( ! defined( 'ABSPATH' ) ) { |
| 17 | exit( 0 ); |
| 18 | } |
| 19 | |
| 20 | /** |
| 21 | * Class Abstract_Token_Subscription_Service |
| 22 | * |
| 23 | * @package Automattic\Jetpack\Extensions\Premium_Content\Subscription_Service |
| 24 | */ |
| 25 | abstract class Abstract_Token_Subscription_Service implements Subscription_Service { |
| 26 | |
| 27 | const JWT_AUTH_TOKEN_COOKIE_NAME = 'wp-jp-premium-content-session'; // wp prefix helps with skipping batcache |
| 28 | const DECODE_EXCEPTION_FEATURE = 'memberships'; |
| 29 | const DECODE_EXCEPTION_MESSAGE = 'Problem decoding provided token'; |
| 30 | const REST_URL_ORIGIN = 'https://subscribe.wordpress.com/'; |
| 31 | const BLOG_SUB_ACTIVE = 'active'; |
| 32 | const BLOG_SUB_PENDING = 'pending'; |
| 33 | const POST_ACCESS_LEVEL_EVERYBODY = 'everybody'; |
| 34 | const POST_ACCESS_LEVEL_SUBSCRIBERS = 'subscribers'; |
| 35 | const POST_ACCESS_LEVEL_PAID_SUBSCRIBERS = 'paid_subscribers'; |
| 36 | const POST_ACCESS_LEVEL_PAID_SUBSCRIBERS_ALL_TIERS = 'paid_subscribers_all_tiers'; |
| 37 | |
| 38 | /** |
| 39 | * An optional user_id to query against (omitting this will use either the token or current user id) |
| 40 | * |
| 41 | * @var int|null |
| 42 | */ |
| 43 | protected $user_id = null; |
| 44 | |
| 45 | /** |
| 46 | * Constructor |
| 47 | * |
| 48 | * @param int|null $user_id An optional user_id to query subscriptions against. Uses token from request/cookie or logged-in user information if omitted. |
| 49 | */ |
| 50 | public function __construct( $user_id = null ) { |
| 51 | $this->user_id = $user_id; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Initialize the token subscription service. |
| 56 | * |
| 57 | * @inheritDoc |
| 58 | */ |
| 59 | public function initialize() { |
| 60 | $this->get_and_set_token_from_request(); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Set the token from the Request to the cookie and retrieve the token. |
| 65 | * |
| 66 | * @return string|null |
| 67 | */ |
| 68 | public function get_and_set_token_from_request() { |
| 69 | // URL token always has a precedence, so it can overwrite the cookie when new data available. |
| 70 | $token = $this->token_from_request(); |
| 71 | if ( null !== $token ) { |
| 72 | $this->set_token_cookie( $token ); |
| 73 | $this->maybe_link_wpcom_user_id( $token ); |
| 74 | return $token; |
| 75 | } |
| 76 | |
| 77 | return $this->token_from_cookie(); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Self-heals the local user's wpcom_user_id meta from a freshly-verified magic-link |
| 82 | * token, so future requests can resolve this visitor's subscriptions via the |
| 83 | * authoritative filter (see get_subscriptions_for_logged_in_user() in access-check.php) |
| 84 | * without needing another magic-link round trip once the token/cookie expires. |
| 85 | * |
| 86 | * Safe because the token's user_id was just verified by WordPress.com's own session |
| 87 | * at subscribe.wordpress.com -- never read from anything stored locally. A local |
| 88 | * account's email is not proof of identity by itself (anyone with admin access could |
| 89 | * type in any email when creating a local user), so this additionally requires the |
| 90 | * local account's own email to match the token's blog_subscriber email before linking, |
| 91 | * to avoid mis-linking a local account to whichever WordPress.com session happens to |
| 92 | * be active in the browser (e.g. a shared device) when the two aren't otherwise related. |
| 93 | * |
| 94 | * @param string $token The raw token string from the incoming request. |
| 95 | * @return void |
| 96 | */ |
| 97 | private function maybe_link_wpcom_user_id( $token ) { |
| 98 | if ( ! is_user_logged_in() ) { |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | $payload = $this->decode_token( $token ); |
| 103 | if ( empty( $payload['user_id'] ) || empty( $payload['blog_subscriber'] ) ) { |
| 104 | return; |
| 105 | } |
| 106 | |
| 107 | $local_user = wp_get_current_user(); |
| 108 | if ( strcasecmp( $local_user->user_email, $payload['blog_subscriber'] ) !== 0 ) { |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | if ( (int) get_user_meta( $local_user->ID, 'wpcom_user_id', true ) === (int) $payload['user_id'] ) { |
| 113 | return; |
| 114 | } |
| 115 | |
| 116 | update_user_meta( $local_user->ID, 'wpcom_user_id', (int) $payload['user_id'] ); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Attempt to refresh the current token against the WordPress.com refresh endpoint |
| 121 | * and, on success, persist the fresh token in the cookie and return the decoded |
| 122 | * payload. |
| 123 | * |
| 124 | * This is called when a subscriber has a JWT token whose subscription data is |
| 125 | * stale (e.g. the cookie contains an old end_date from before a Stripe renewal). |
| 126 | * The refresh endpoint accepts the existing token, re-queries billing, and |
| 127 | * returns a fresh token reflecting current subscription state. |
| 128 | * |
| 129 | * @return array|null Decoded fresh payload on success, null on any failure. |
| 130 | */ |
| 131 | public function refresh_token_payload() { |
| 132 | $current_token = $this->get_and_set_token_from_request(); |
| 133 | if ( empty( $current_token ) ) { |
| 134 | return null; |
| 135 | } |
| 136 | |
| 137 | $fresh_token = $this->fetch_refreshed_token( $current_token ); |
| 138 | if ( empty( $fresh_token ) ) { |
| 139 | return null; |
| 140 | } |
| 141 | |
| 142 | $fresh_payload = $this->decode_token( $fresh_token ); |
| 143 | if ( empty( $fresh_payload ) ) { |
| 144 | return null; |
| 145 | } |
| 146 | |
| 147 | $this->set_token_cookie( $fresh_token ); |
| 148 | return $fresh_payload; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * POST the current token to the WordPress.com memberships token-refresh endpoint |
| 153 | * and return a fresh JWT string, or null on any failure. |
| 154 | * |
| 155 | * Endpoint contract (POST /sites/<site_id>/memberships/token/refresh): |
| 156 | * - 200 + { success: true, jwt_token: "<jwt>" } → fresh token; return it. |
| 157 | * - 200 + { success: false, ... } → wpcom refused the refresh |
| 158 | * (token no longer eligible, or signature/site/user check failed). |
| 159 | * Deterministic; clear the cookie so the visitor is routed through the normal |
| 160 | * auth flow on the next page load. |
| 161 | * - Anything else (non-200, WP_Error, network timeout, malformed body) → transient; |
| 162 | * leave the cookie alone so a temporary outage does not mass-log-out subscribers. |
| 163 | * |
| 164 | * @param string $current_token The token to present for refresh. |
| 165 | * @return string|null Fresh token string, or null on failure. |
| 166 | */ |
| 167 | protected function fetch_refreshed_token( $current_token ) { |
| 168 | $site_id = (int) $this->get_site_id(); |
| 169 | if ( $site_id <= 0 ) { |
| 170 | return null; |
| 171 | } |
| 172 | |
| 173 | $response = wp_remote_post( |
| 174 | sprintf( |
| 175 | 'https://public-api.wordpress.com/rest/v1.1/sites/%d/memberships/token/refresh', |
| 176 | $site_id |
| 177 | ), |
| 178 | array( |
| 179 | 'timeout' => 5, |
| 180 | 'headers' => array( 'Content-Type' => 'application/json' ), |
| 181 | 'body' => wp_json_encode( |
| 182 | array( 'jwt_token' => $current_token ), |
| 183 | JSON_UNESCAPED_SLASHES |
| 184 | ), |
| 185 | ) |
| 186 | ); |
| 187 | |
| 188 | if ( is_wp_error( $response ) ) { |
| 189 | return null; |
| 190 | } |
| 191 | |
| 192 | if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) { |
| 193 | return null; |
| 194 | } |
| 195 | |
| 196 | $body = json_decode( wp_remote_retrieve_body( $response ), true ); |
| 197 | if ( ! is_array( $body ) || ! isset( $body['success'] ) ) { |
| 198 | return null; |
| 199 | } |
| 200 | |
| 201 | if ( true === $body['success'] ) { |
| 202 | if ( ! empty( $body['jwt_token'] ) && is_string( $body['jwt_token'] ) ) { |
| 203 | return $body['jwt_token']; |
| 204 | } |
| 205 | // Malformed 200: success: true but no usable jwt_token. Treat as transient — |
| 206 | // leave the cookie alone rather than logging the visitor out over a response |
| 207 | // shape problem. |
| 208 | return null; |
| 209 | } |
| 210 | |
| 211 | // success === false → deterministic auth failure. Clear cookie. |
| 212 | self::clear_token_cookie(); |
| 213 | return null; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Whether the token already carries a subscription whose product_id matches one of |
| 218 | * the required plans. Used to gate the refresh path: combined with `validate_subscriptions` |
| 219 | * having returned false, a match here implies the matching subscription's end_date is |
| 220 | * in the past — the only case the refresh endpoint can help with. |
| 221 | * |
| 222 | * @param int[] $valid_plan_ids Plan IDs required by the post. |
| 223 | * @param array $token_subscriptions Subscriptions from the current token (keyed by product_id). |
| 224 | * @return bool |
| 225 | */ |
| 226 | public function token_has_matching_product( array $valid_plan_ids, array $token_subscriptions ) { |
| 227 | if ( empty( $token_subscriptions ) ) { |
| 228 | return false; |
| 229 | } |
| 230 | foreach ( $valid_plan_ids as $plan_id ) { |
| 231 | $product_id = (int) get_post_meta( $plan_id, 'jetpack_memberships_product_id', true ); |
| 232 | if ( $product_id > 0 && isset( $token_subscriptions[ $product_id ] ) ) { |
| 233 | return true; |
| 234 | } |
| 235 | } |
| 236 | return false; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Get the site ID for the current site. |
| 241 | * |
| 242 | * @return int |
| 243 | */ |
| 244 | abstract public function get_site_id(); |
| 245 | |
| 246 | /** |
| 247 | * Get the token payload . |
| 248 | * |
| 249 | * @return array |
| 250 | */ |
| 251 | public function get_token_payload() { |
| 252 | $token = $this->get_and_set_token_from_request(); |
| 253 | if ( empty( $token ) ) { |
| 254 | return array(); |
| 255 | } |
| 256 | $token_payload = $this->decode_token( $token ); |
| 257 | if ( ! is_array( $token_payload ) ) { |
| 258 | return array(); |
| 259 | } |
| 260 | return $token_payload; |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Get a token property, otherwise return false. |
| 265 | * |
| 266 | * @param string $key the property name. |
| 267 | * |
| 268 | * @return mixed|false |
| 269 | */ |
| 270 | public function get_token_property( $key ) { |
| 271 | $token_payload = $this->get_token_payload(); |
| 272 | if ( ! isset( $token_payload[ $key ] ) ) { |
| 273 | return false; |
| 274 | } |
| 275 | return $token_payload[ $key ]; |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * The user is visiting with a subscriber token cookie. |
| 280 | * |
| 281 | * This is theoretically where the cookie JWT signature verification |
| 282 | * thing will happen. |
| 283 | * |
| 284 | * How to obtain one of these (or what exactly it is) is |
| 285 | * still a WIP (see api/auth branch) |
| 286 | * |
| 287 | * @inheritDoc |
| 288 | * |
| 289 | * @param array $valid_plan_ids List of valid plan IDs. |
| 290 | * @param array $access_level Access level for content. |
| 291 | * |
| 292 | * @return bool Whether the user can view the content |
| 293 | */ |
| 294 | public function visitor_can_view_content( $valid_plan_ids, $access_level ) { |
| 295 | global $current_user; |
| 296 | $old_user = $current_user; // backup the current user so we can set the current user to the token user for paywall purposes |
| 297 | |
| 298 | $payload = $this->get_token_payload(); |
| 299 | $is_valid_token = ! empty( $payload ); |
| 300 | |
| 301 | if ( $is_valid_token && isset( $payload['user_id'] ) ) { |
| 302 | // set the current user to the payload's user id |
| 303 | // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited |
| 304 | $current_user = get_user_by( 'id', $payload['user_id'] ); |
| 305 | } |
| 306 | |
| 307 | $is_blog_subscriber = false; |
| 308 | $is_paid_subscriber = false; |
| 309 | $subscriptions = array(); |
| 310 | |
| 311 | if ( $is_valid_token ) { |
| 312 | /** |
| 313 | * Allow access to the content if: |
| 314 | * |
| 315 | * Active: user has a valid subscription |
| 316 | */ |
| 317 | $is_blog_subscriber = in_array( |
| 318 | $payload['blog_sub'], |
| 319 | array( |
| 320 | self::BLOG_SUB_ACTIVE, |
| 321 | ), |
| 322 | true |
| 323 | ); |
| 324 | $subscriptions = (array) $payload['subscriptions']; |
| 325 | $is_paid_subscriber = static::validate_subscriptions( $valid_plan_ids, $subscriptions ); |
| 326 | |
| 327 | // Only attempt a refresh in the specific stale-end_date case: the token already carries a |
| 328 | // subscription whose product_id matches one of the required plans, but validation failed |
| 329 | // (which, given the match, can only be because end_date is in the past). This excludes |
| 330 | // free subscribers, tier mismatches, and cancellations from triggering an HTTP call on |
| 331 | // every render. |
| 332 | if ( |
| 333 | ! $is_paid_subscriber |
| 334 | && ! empty( $valid_plan_ids ) |
| 335 | && $this->token_has_matching_product( $valid_plan_ids, $subscriptions ) |
| 336 | ) { |
| 337 | $fresh_payload = $this->refresh_token_payload(); |
| 338 | if ( ! empty( $fresh_payload ) ) { |
| 339 | $payload = $fresh_payload; |
| 340 | $is_blog_subscriber = isset( $payload['blog_sub'] ) && self::BLOG_SUB_ACTIVE === $payload['blog_sub']; |
| 341 | $subscriptions = isset( $payload['subscriptions'] ) ? (array) $payload['subscriptions'] : array(); |
| 342 | $is_paid_subscriber = static::validate_subscriptions( $valid_plan_ids, $subscriptions ); |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | $has_access = $this->user_has_access( $access_level, $is_blog_subscriber, $is_paid_subscriber, get_the_ID(), $subscriptions ); |
| 348 | // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited |
| 349 | $current_user = $old_user; |
| 350 | return $has_access; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Retrieves the email of the currently authenticated subscriber. |
| 355 | * |
| 356 | * @return string The email address of the current user. |
| 357 | */ |
| 358 | public function get_subscriber_email() { |
| 359 | $email = $this->get_token_property( 'blog_subscriber' ); |
| 360 | if ( empty( $email ) ) { |
| 361 | return ''; |
| 362 | } |
| 363 | return $email; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Returns true if the current authenticated user is subscribed to the current site. |
| 368 | * |
| 369 | * @return boolean |
| 370 | */ |
| 371 | public function is_current_user_subscribed() { |
| 372 | return $this->get_token_property( 'blog_sub' ) === 'active'; |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Returns true if the current authenticated user has a pending subscription to the current site. |
| 377 | * |
| 378 | * @return bool |
| 379 | */ |
| 380 | abstract public function is_current_user_pending_subscriber(): bool; |
| 381 | |
| 382 | /** |
| 383 | * Return if the user has access to the content depending on the access level and the user rights |
| 384 | * |
| 385 | * @param string $access_level Post or blog access level. |
| 386 | * @param bool $is_blog_subscriber Is user a subscriber of the blog. |
| 387 | * @param bool $is_paid_subscriber Is user a paid subscriber of the blog. |
| 388 | * @param int $post_id Post ID. |
| 389 | * @param array $user_abbreviated_subscriptions User subscription abbreviated. |
| 390 | * |
| 391 | * @return bool Whether the user has access to the content. |
| 392 | */ |
| 393 | protected function user_has_access( $access_level, $is_blog_subscriber, $is_paid_subscriber, $post_id, $user_abbreviated_subscriptions ) { |
| 394 | |
| 395 | if ( is_user_logged_in() && current_user_can( 'edit_post', $post_id ) ) { |
| 396 | // Admin has access |
| 397 | $has_access = true; |
| 398 | } else { |
| 399 | switch ( $access_level ) { |
| 400 | case self::POST_ACCESS_LEVEL_EVERYBODY: |
| 401 | default: |
| 402 | $has_access = true; |
| 403 | break; |
| 404 | case self::POST_ACCESS_LEVEL_SUBSCRIBERS: |
| 405 | $has_access = $is_blog_subscriber || $is_paid_subscriber; |
| 406 | break; |
| 407 | case self::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS_ALL_TIERS: |
| 408 | $has_access = $is_paid_subscriber; |
| 409 | break; |
| 410 | case self::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS: |
| 411 | $has_access = $is_paid_subscriber && |
| 412 | ! $this->maybe_gate_access_for_user_if_post_tier( $post_id, $user_abbreviated_subscriptions ); |
| 413 | break; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | do_action( 'earn_user_has_access', $access_level, $has_access, $is_blog_subscriber, $is_paid_subscriber, $post_id ); |
| 418 | return $has_access; |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * Check post access for tiers. |
| 423 | * |
| 424 | * @param int $post_id Current post id. |
| 425 | * @param array $user_abbreviated_subscriptions User subscription abbreviated. |
| 426 | * |
| 427 | * @return bool |
| 428 | */ |
| 429 | private function maybe_gate_access_for_user_if_post_tier( $post_id, $user_abbreviated_subscriptions ) { |
| 430 | $tier_id = intval( |
| 431 | get_post_meta( $post_id, META_NAME_FOR_POST_TIER_ID_SETTINGS, true ) |
| 432 | ); |
| 433 | |
| 434 | if ( ! $tier_id ) { |
| 435 | return false; |
| 436 | } |
| 437 | |
| 438 | return $this->maybe_gate_access_for_user_if_tier( $tier_id, $user_abbreviated_subscriptions ); |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * Get all plans id that make access valid for a post with this tier id. |
| 443 | * |
| 444 | * @param int $tier_id Newsletter tier post ID. |
| 445 | * |
| 446 | * @return array|WP_Error |
| 447 | */ |
| 448 | public static function get_valid_plan_ids_for_tier( int $tier_id ) { |
| 449 | // Valid plans are: |
| 450 | // - monthly plan with ID $tier_id |
| 451 | // - yearly plan related to this $tier_id (in meta jetpack_memberships_tier) |
| 452 | // - monthly tiers with same currency and price same or higher than original tier |
| 453 | // - yearly plans that are more expensive than the yearly plan linked to the original tier |
| 454 | |
| 455 | $valid_plan_ids = array(); |
| 456 | |
| 457 | $all_plans = \Jetpack_Memberships::get_all_plans(); |
| 458 | |
| 459 | // Let's get the current tier |
| 460 | $tier = null; |
| 461 | foreach ( $all_plans as $post ) { |
| 462 | if ( $post->ID === $tier_id ) { |
| 463 | $tier = $post; |
| 464 | break; |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | if ( $tier === null ) { |
| 469 | // We have an error |
| 470 | return new WP_Error( 'related-plan-not-found', 'The plan related to the tier cannot be found' ); |
| 471 | } |
| 472 | |
| 473 | $tier_price = self::find_metadata( $tier, 'jetpack_memberships_price' ); |
| 474 | $tier_currency = self::find_metadata( $tier, 'jetpack_memberships_currency' ); |
| 475 | $tier_product_id = self::find_metadata( $tier, 'jetpack_memberships_product_id' ); |
| 476 | |
| 477 | if ( $tier_price === null || $tier_currency === null || $tier_product_id === null ) { |
| 478 | // There is an issue with the meta |
| 479 | return new WP_Error( 'wrong-data-plan-not-found', 'The plan related to the tier is missing data' ); |
| 480 | } |
| 481 | |
| 482 | $valid_plan_ids[] = $tier_id; |
| 483 | |
| 484 | $tier_price = floatval( $tier_price ); |
| 485 | |
| 486 | // At this point we know the post is |
| 487 | $annual_tier = null; |
| 488 | foreach ( $all_plans as $plan ) { |
| 489 | if ( intval( self::find_metadata( $plan, 'jetpack_memberships_tier' ) ) === $tier_id ) { |
| 490 | $annual_tier = $plan; |
| 491 | break; |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | $annual_tier_price = null; |
| 496 | if ( ! empty( $annual_tier ) ) { |
| 497 | $annual_tier_price = floatval( self::find_metadata( $annual_tier, 'jetpack_memberships_price' ) ); |
| 498 | $valid_plan_ids[] = $annual_tier->ID; |
| 499 | } |
| 500 | |
| 501 | foreach ( $all_plans as $post ) { |
| 502 | if ( in_array( $post->ID, $valid_plan_ids, true ) ) { |
| 503 | continue; |
| 504 | } |
| 505 | |
| 506 | $plan_price = self::find_metadata( $post, 'jetpack_memberships_price' ); |
| 507 | $plan_currency = self::find_metadata( $post, 'jetpack_memberships_currency' ); |
| 508 | $plan_interval = self::find_metadata( $post, 'jetpack_memberships_interval' ); |
| 509 | |
| 510 | if ( $plan_price === null || $plan_currency === null || $plan_interval === null ) { |
| 511 | // There is an issue with the meta |
| 512 | continue; |
| 513 | } |
| 514 | |
| 515 | $plan_price = floatval( $plan_price ); |
| 516 | |
| 517 | if ( $tier_currency !== $plan_currency ) { |
| 518 | // For now, we don't count if there are different currency (not sure how to convert price in a pure JP env) |
| 519 | continue; |
| 520 | } |
| 521 | |
| 522 | if ( ( $plan_interval === '1 month' && $plan_price >= $tier_price ) || |
| 523 | ( $annual_tier_price !== null && $plan_interval === '1 year' && $plan_price >= $annual_tier_price ) |
| 524 | ) { |
| 525 | $valid_plan_ids [] = $post->ID; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | return $valid_plan_ids; |
| 530 | } |
| 531 | |
| 532 | /** |
| 533 | * Find metadata in post |
| 534 | * |
| 535 | * @param WP_Post|object $post Post. |
| 536 | * @param string $meta_key Meta to retrieve. |
| 537 | * |
| 538 | * @return mixed|null |
| 539 | */ |
| 540 | private static function find_metadata( $post, $meta_key ) { |
| 541 | |
| 542 | if ( $post instanceof WP_Post ) { |
| 543 | return $post->{$meta_key}; |
| 544 | } |
| 545 | |
| 546 | foreach ( $post->metadata as $meta ) { |
| 547 | if ( $meta->key === $meta_key ) { |
| 548 | return $meta->value; |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | return null; |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * Check access for tier. |
| 557 | * |
| 558 | * @param int $tier_id Tier id. |
| 559 | * @param array $user_abbreviated_subscriptions User subscription abbreviated. |
| 560 | * |
| 561 | * @return bool |
| 562 | */ |
| 563 | public function maybe_gate_access_for_user_if_tier( $tier_id, $user_abbreviated_subscriptions ) { |
| 564 | |
| 565 | $plan_ids = \Jetpack_Memberships::get_all_newsletter_plan_ids(); |
| 566 | |
| 567 | if ( ! in_array( $tier_id, $plan_ids, true ) ) { |
| 568 | // If the tier is not in the plans, we bail |
| 569 | return false; |
| 570 | } |
| 571 | |
| 572 | // We now need the tier price and currency, and the same for the annual price (if available) |
| 573 | $all_plans = \Jetpack_Memberships::get_all_plans(); |
| 574 | $tier = null; |
| 575 | foreach ( $all_plans as $post ) { |
| 576 | if ( $post->ID === $tier_id ) { |
| 577 | $tier = $post; |
| 578 | break; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | if ( $tier === null ) { |
| 583 | return false; |
| 584 | } |
| 585 | |
| 586 | $tier_price = self::find_metadata( $tier, 'jetpack_memberships_price' ); |
| 587 | $tier_currency = self::find_metadata( $tier, 'jetpack_memberships_currency' ); |
| 588 | $tier_product_id = self::find_metadata( $tier, 'jetpack_memberships_product_id' ); |
| 589 | $annual_tier_price = $tier_price * 12; |
| 590 | |
| 591 | if ( $tier_price === null || $tier_currency === null || $tier_product_id === null ) { |
| 592 | // There is an issue with the meta |
| 593 | return false; |
| 594 | } |
| 595 | |
| 596 | $tier_price = floatval( $tier_price ); |
| 597 | |
| 598 | // At this point we know the post is |
| 599 | $annual_tier_id = null; |
| 600 | $annual_tier = null; |
| 601 | foreach ( $all_plans as $plan ) { |
| 602 | if ( intval( self::find_metadata( $plan, 'jetpack_memberships_tier' ) ) === $tier_id ) { |
| 603 | $annual_tier = $plan; |
| 604 | break; |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | $annual_tier_price = null; |
| 609 | if ( ! empty( $annual_tier ) ) { |
| 610 | $annual_tier_id = $annual_tier->ID; |
| 611 | $annual_tier_price = floatval( self::find_metadata( $annual_tier, 'jetpack_memberships_price' ) ); |
| 612 | } |
| 613 | |
| 614 | foreach ( $user_abbreviated_subscriptions as $subscription_plan_id => $details ) { |
| 615 | $details = (array) $details; |
| 616 | |
| 617 | if ( ! self::subscription_grants_access( $details ) ) { |
| 618 | // Subscription not active anymore (its end_date day has fully passed). |
| 619 | continue; |
| 620 | } |
| 621 | |
| 622 | $subscription_post = null; |
| 623 | foreach ( $all_plans as $plan ) { |
| 624 | if ( intval( self::find_metadata( $plan, 'jetpack_memberships_product_id' ) ) === intval( $subscription_plan_id ) ) { |
| 625 | $subscription_post = $plan; |
| 626 | break; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | if ( empty( $subscription_post ) ) { |
| 631 | // No post linked to this plan |
| 632 | continue; |
| 633 | } |
| 634 | |
| 635 | // Comp grants linked to a plan on this site bypass the tier price comparison. |
| 636 | if ( ! empty( $details['is_comp'] ) ) { |
| 637 | return false; |
| 638 | } |
| 639 | |
| 640 | $subscription_post_id = $subscription_post->ID; |
| 641 | |
| 642 | if ( $subscription_post_id === $tier_id || $subscription_post_id === $annual_tier_id ) { |
| 643 | // User is subscribed to the right tier |
| 644 | return false; |
| 645 | } |
| 646 | |
| 647 | $subscription_price = self::find_metadata( $subscription_post, 'jetpack_memberships_price' ); |
| 648 | $subscription_currency = self::find_metadata( $subscription_post, 'jetpack_memberships_currency' ); |
| 649 | $subscription_interval = self::find_metadata( $subscription_post, 'jetpack_memberships_interval' ); |
| 650 | |
| 651 | if ( $subscription_price === null || $subscription_currency === null || $subscription_interval === null ) { |
| 652 | // There is an issue with the meta |
| 653 | continue; |
| 654 | } |
| 655 | |
| 656 | $subscription_price = floatval( $subscription_price ); |
| 657 | |
| 658 | if ( $tier_currency !== $subscription_currency ) { |
| 659 | // For now, we don't count if there are different currency (not sure how to convert price in a pure JP env) |
| 660 | continue; |
| 661 | } |
| 662 | |
| 663 | if ( ( $subscription_interval === '1 month' && $subscription_price >= $tier_price ) || |
| 664 | ( $annual_tier_price !== null && $subscription_interval === '1 year' && $subscription_price >= $annual_tier_price ) |
| 665 | ) { |
| 666 | // One subscription is more expensive than the minimum set by the post' selected tier |
| 667 | return false; |
| 668 | } |
| 669 | } |
| 670 | return true; // No user subscription is more expensive than the post's tier price... |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * Decode the given token. |
| 675 | * |
| 676 | * @param string $token Token to decode. |
| 677 | * |
| 678 | * @return array|false |
| 679 | */ |
| 680 | public function decode_token( $token ) { |
| 681 | if ( empty( $token ) ) { |
| 682 | return false; |
| 683 | } |
| 684 | |
| 685 | try { |
| 686 | $key = $this->get_key(); |
| 687 | return $key ? (array) JWT::decode( $token, $key, array( 'HS256' ) ) : false; |
| 688 | } catch ( \Exception $exception ) { |
| 689 | return false; |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | /** |
| 694 | * Get the key for decoding the auth token. |
| 695 | * |
| 696 | * @return string|false |
| 697 | */ |
| 698 | abstract public function get_key(); |
| 699 | |
| 700 | // phpcs:disable |
| 701 | /** |
| 702 | * Get the URL to access the protected content. |
| 703 | * |
| 704 | * @param string $mode Access mode (either "subscribe" or "login"). |
| 705 | */ |
| 706 | public function access_url( $mode = 'subscribe', $permalink = null ) { |
| 707 | global $wp; |
| 708 | if ( empty( $permalink ) ) { |
| 709 | $permalink = get_permalink(); |
| 710 | if ( empty( $permalink ) ) { |
| 711 | $permalink = add_query_arg( $wp->query_vars, home_url( $wp->request ) ); |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | $login_url = $this->get_rest_api_token_url( $this->get_site_id(), $permalink ); |
| 716 | return $login_url; |
| 717 | } |
| 718 | // phpcs:enable |
| 719 | |
| 720 | /** |
| 721 | * Get the token stored in the auth cookie. |
| 722 | * |
| 723 | * @return ?string |
| 724 | */ |
| 725 | private function token_from_cookie() { |
| 726 | if ( isset( $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ] ) ) { |
| 727 | // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized |
| 728 | return $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ]; |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * Check whether the JWT_TOKEN cookie is set |
| 734 | * |
| 735 | * @return bool |
| 736 | */ |
| 737 | public static function has_token_from_cookie() { |
| 738 | return isset( $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ] ) && ! empty( $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ] ); |
| 739 | } |
| 740 | |
| 741 | /** |
| 742 | * Store the auth cookie. |
| 743 | * |
| 744 | * Updates `$_COOKIE` in memory so subsequent code in the same request (e.g. another |
| 745 | * Premium Content block on the same post) reads the new value and doesn't re-trigger |
| 746 | * a refresh against a now-stale value. The Set-Cookie header is emitted via the |
| 747 | * standard `setcookie()` — on Atomic / wpcom the response is output-buffered so this |
| 748 | * still works during `the_content`; on stricter self-hosted setups the header may |
| 749 | * silently be dropped after output starts, in which case the browser keeps the prior |
| 750 | * cookie value and the refresh fires again on the next visit (correct degradation). |
| 751 | * |
| 752 | * @param string $token Auth token. |
| 753 | * @return void |
| 754 | */ |
| 755 | private function set_token_cookie( $token ) { |
| 756 | if ( empty( $token ) ) { |
| 757 | return; |
| 758 | } |
| 759 | |
| 760 | $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ] = $token; |
| 761 | |
| 762 | if ( defined( 'TESTING_IN_JETPACK' ) && TESTING_IN_JETPACK ) { |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | if ( ! headers_sent() ) { |
| 767 | // phpcs:ignore Jetpack.Functions.SetCookie.FoundNonHTTPOnlyFalse |
| 768 | setcookie( self::JWT_AUTH_TOKEN_COOKIE_NAME, $token, strtotime( '+1 month' ), '/', '', is_ssl(), false ); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | /** |
| 773 | * Clear the auth cookie. Mirrors set_token_cookie(): updates `$_COOKIE` for |
| 774 | * in-request consistency, then emits a clearing Set-Cookie header. |
| 775 | */ |
| 776 | public static function clear_token_cookie() { |
| 777 | unset( $_COOKIE[ self::JWT_AUTH_TOKEN_COOKIE_NAME ] ); |
| 778 | |
| 779 | if ( defined( 'TESTING_IN_JETPACK' ) && TESTING_IN_JETPACK ) { |
| 780 | return; |
| 781 | } |
| 782 | |
| 783 | if ( ! headers_sent() ) { |
| 784 | // phpcs:ignore Jetpack.Functions.SetCookie.FoundNonHTTPOnlyFalse |
| 785 | setcookie( self::JWT_AUTH_TOKEN_COOKIE_NAME, '', 1, '/', '', is_ssl(), false ); |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | /** |
| 790 | * Get the token if present in the current request. |
| 791 | * |
| 792 | * @return ?string |
| 793 | */ |
| 794 | private function token_from_request() { |
| 795 | $token = null; |
| 796 | // phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 797 | if ( isset( $_GET['token'] ) && is_string( $_GET['token'] ) ) { |
| 798 | // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.NonceVerification.Recommended |
| 799 | if ( preg_match( '/^[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?\.([a-zA-Z0-9\-_]+)?$/', $_GET['token'], $matches ) ) { |
| 800 | // token matches a valid JWT token pattern. |
| 801 | $token = reset( $matches ); |
| 802 | } |
| 803 | } |
| 804 | return $token; |
| 805 | } |
| 806 | |
| 807 | /** |
| 808 | * Return true if an abbreviated subscription currently grants access. |
| 809 | * |
| 810 | * Access is granted through the end of the subscription's end_date day |
| 811 | * (23:59:59 UTC), not the exact end_date timestamp. Memberships store |
| 812 | * end_date as the precise purchase timestamp, while billing renews via a |
| 813 | * deferred day-0 job that can run several hours after that timestamp. Since |
| 814 | * the wider platform already treats end-of-day as the formal expiration |
| 815 | * time for subscriptions, expiring at EOD here keeps a same-day auto-renewal |
| 816 | * from cutting off access before its renewal completes, and aligns Paid |
| 817 | * Content with the rest of WordPress.com / Jetpack. |
| 818 | * |
| 819 | * Cancelled and otherwise inactive subscriptions never reach this check — |
| 820 | * they are dropped by the `'active' === status` filter in |
| 821 | * abbreviate_subscriptions() — so this only ever extends an already-active |
| 822 | * subscription to the end of its final day. |
| 823 | * |
| 824 | * @param object|array $subscription Abbreviated subscription (see abbreviate_subscriptions()). |
| 825 | * |
| 826 | * @return bool |
| 827 | */ |
| 828 | protected static function subscription_grants_access( $subscription ) { |
| 829 | $subscription = (array) $subscription; |
| 830 | if ( empty( $subscription['end_date'] ) ) { |
| 831 | return false; |
| 832 | } |
| 833 | |
| 834 | $end = is_int( $subscription['end_date'] ) ? $subscription['end_date'] : strtotime( $subscription['end_date'] ); |
| 835 | if ( false === $end ) { |
| 836 | return false; |
| 837 | } |
| 838 | |
| 839 | // Expire at the end of the end_date's day (UTC), matching the platform's |
| 840 | // formal expiration convention rather than the exact purchase timestamp. |
| 841 | $end_of_day = strtotime( gmdate( 'Y-m-d 23:59:59', $end ) . ' UTC' ); |
| 842 | |
| 843 | return $end_of_day >= time(); |
| 844 | } |
| 845 | |
| 846 | /** |
| 847 | * Return true if any ID/date pairs are valid. Otherwise false. |
| 848 | * |
| 849 | * @param int[] $valid_plan_ids List of valid plan IDs. |
| 850 | * @param object[] $token_subscriptions : ID must exist in the provided <code>$valid_subscriptions</code> parameter. |
| 851 | * The provided end date needs to fall on or after today, |
| 852 | * i.e. access lasts through the end of the end_date day (UTC). |
| 853 | * |
| 854 | * @return bool |
| 855 | */ |
| 856 | public static function validate_subscriptions( array $valid_plan_ids, array $token_subscriptions ) { |
| 857 | // Create a list of product_ids to compare against. |
| 858 | $product_ids = array(); |
| 859 | foreach ( $valid_plan_ids as $plan_id ) { |
| 860 | $product_id = (int) get_post_meta( $plan_id, 'jetpack_memberships_product_id', true ); |
| 861 | if ( isset( $product_id ) ) { |
| 862 | $product_ids[] = $product_id; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | foreach ( $token_subscriptions as $product_id => $token_subscription ) { |
| 867 | if ( in_array( intval( $product_id ), $product_ids, true ) ) { |
| 868 | if ( static::subscription_grants_access( $token_subscription ) ) { |
| 869 | return true; |
| 870 | } |
| 871 | } |
| 872 | } |
| 873 | return false; |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * Get the URL of the JWT endpoint. |
| 878 | * |
| 879 | * @param int $site_id Site ID. |
| 880 | * @param string $redirect_url URL to redirect after checking the token validity. |
| 881 | * @return string URL of the JWT endpoint. |
| 882 | */ |
| 883 | private function get_rest_api_token_url( $site_id, $redirect_url ) { |
| 884 | // The redirect url might have a part URL encoded but not the whole URL. |
| 885 | $redirect_url = rawurldecode( $redirect_url ); |
| 886 | return sprintf( '%smemberships/jwt?site_id=%d&redirect_url=%s', self::REST_URL_ORIGIN, $site_id, rawurlencode( $redirect_url ) ); |
| 887 | } |
| 888 | |
| 889 | /** |
| 890 | * Report the subscriptions as an ID => [ 'end_date' => ]. mapping |
| 891 | * |
| 892 | * @param array $subscriptions_from_bd List of subscriptions from BD. |
| 893 | * |
| 894 | * @return array<int, array> |
| 895 | */ |
| 896 | public static function abbreviate_subscriptions( $subscriptions_from_bd ) { |
| 897 | |
| 898 | if ( empty( $subscriptions_from_bd ) ) { |
| 899 | return array(); |
| 900 | } |
| 901 | |
| 902 | $subscriptions = array(); |
| 903 | foreach ( $subscriptions_from_bd as $subscription ) { |
| 904 | // We are picking the expiry date that is the most in the future. |
| 905 | if ( |
| 906 | 'active' === $subscription['status'] && ( |
| 907 | ! isset( $subscriptions[ $subscription['product_id'] ] ) || |
| 908 | empty( $subscription['end_date'] ) || // Special condition when subscription has no expiry date - we will default to a year from now for the purposes of the token. |
| 909 | strtotime( $subscription['end_date'] ) > strtotime( (string) $subscriptions[ $subscription['product_id'] ]->end_date ) |
| 910 | ) |
| 911 | ) { |
| 912 | $subscriptions[ $subscription['product_id'] ] = new \stdClass(); |
| 913 | $subscriptions[ $subscription['product_id'] ]->end_date = empty( $subscription['end_date'] ) ? ( time() + 365 * 24 * 3600 ) : $subscription['end_date']; |
| 914 | if ( ! empty( $subscription['is_comp'] ) ) { |
| 915 | $subscriptions[ $subscription['product_id'] ]->is_comp = true; |
| 916 | } |
| 917 | } |
| 918 | } |
| 919 | return $subscriptions; |
| 920 | } |
| 921 | } |
| 922 |