| @@ -2,8 +2,9 @@ | ||
| 2 | 2 | |
| 3 | 3 | namespace Better_Payment\Lite\Campaign; |
| 4 | 4 | |
| 5 | 5 | use Better_Payment\Lite\Controller; |
| 6 | +use Better_Payment\Lite\Campaign\Elements\ElementRegistry; | |
| 6 | 7 | |
| 7 | 8 | if ( ! defined( 'ABSPATH' ) ) { |
| 8 | 9 | exit; |
| 9 | 10 | } |
| @@ -62,8 +63,13 @@ | ||
| 62 | 63 | } |
| 63 | 64 | |
| 64 | 65 | $value = wp_unslash( $_POST[ $key ] ); |
| 65 | 66 | $value = is_callable( $sanitize ) ? call_user_func( $sanitize, $value ) : $value; |
| 67 | + | |
| 68 | + if ( '_bpc_fields_layout' === $key ) { | |
| 69 | + $value = self::enforce_pro_entitlement( $post_id, $value ); | |
| 70 | + } | |
| 71 | + | |
| 66 | 72 | update_post_meta( $post_id, $key, $value ); |
| 67 | 73 | } |
| 68 | 74 | } |
| 69 | 75 | |
| @@ -76,8 +82,13 @@ | ||
| 76 | 82 | |
| 77 | 83 | if ( array_key_exists( $short_key, $data ) ) { |
| 78 | 84 | $raw = $data[ $short_key ]; |
| 79 | 85 | $value = is_callable( $sanitize ) ? call_user_func( $sanitize, $raw ) : sanitize_text_field( $raw ); |
| 86 | + | |
| 87 | + if ( '_bpc_fields_layout' === $key ) { | |
| 88 | + $value = self::enforce_pro_entitlement( $post_id, $value ); | |
| 89 | + } | |
| 90 | + | |
| 80 | 91 | // wp_unslash() is applied inside update_metadata, which strips backslashes from strings. |
| 81 | 92 | // wp_slash() pre-escapes so the round-trip leaves the value intact (standard WP REST API pattern). |
| 82 | 93 | if ( is_string( $value ) ) { |
| 83 | 94 | $value = wp_slash( $value ); |
| @@ -177,8 +188,219 @@ | ||
| 177 | 188 | } |
| 178 | 189 | return '[]'; |
| 179 | 190 | } |
| 180 | 191 | return '[]'; |
| 192 | + } | |
| 193 | + | |
| 194 | + /** | |
| 195 | + * Refuse changes to Pro-element settings from a site without Pro. | |
| 196 | + * | |
| 197 | + * The builder shows a locked Pro element's upgrade banner instead of its | |
| 198 | + * controls, but that is a courtesy, not a control — nothing stops a crafted | |
| 199 | + * `POST` to the REST route or the classic editor (or an AI turn) from carrying | |
| 200 | + * arbitrary `donors_wall` settings. This is the actual enforcement. | |
| 201 | + * | |
| 202 | + * **Existing values are preserved, never stripped.** The tempting fix is to | |
| 203 | + * delete Pro elements (or blank their settings) on save, but a user whose | |
| 204 | + * licence lapsed for a week would come back to find their configuration | |
| 205 | + * destroyed by an autosave. Instead: | |
| 206 | + * | |
| 207 | + * - element exists already → its stored settings are restored verbatim, so | |
| 208 | + * the campaign is byte-identical on the Pro elements and reactivating Pro | |
| 209 | + * brings everything back exactly as it was; | |
| 210 | + * - element is new → its settings are reset to the registered defaults, so a | |
| 211 | + * free user can't hand-craft values for an element they can't configure. | |
| 212 | + * A free install registers only a lock stub | |
| 213 | + * ({@see \Better_Payment\Lite\Campaign\Elements\ProElementStubs}), whose | |
| 214 | + * defaults are empty, so a new Pro element saves with `[]` settings. | |
| 215 | + * | |
| 216 | + * **"Exists already" is decided in two passes, and the second one is the one | |
| 217 | + * that protects the user.** An element id is not a stable identity: an AI | |
| 218 | + * whole-page edit (`set_layout`), an undo to a snapshot from before a save, or | |
| 219 | + * any client that re-mints ids hands back the SAME FAQ under a NEW id. Matching | |
| 220 | + * by id alone made that FAQ "new", saved it as `[]`, and destroyed the | |
| 221 | + * configuration this guard exists to keep — permanently, since reactivating Pro | |
| 222 | + * has nothing left to restore. So: | |
| 223 | + * | |
| 224 | + * 1. an incoming Pro element whose id AND type match a stored one takes that | |
| 225 | + * element's settings; | |
| 226 | + * 2. every other incoming Pro element takes the settings of the next stored | |
| 227 | + * element of the SAME type that step 1 did not claim, in document order; | |
| 228 | + * 3. only when no unclaimed stored element of that type remains is it new. | |
| 229 | + * | |
| 230 | + * Settings never cross types, and each stored element is claimed at most once, | |
| 231 | + * so an extra Pro element beyond what was stored still gets the defaults. The | |
| 232 | + * values restored always come from storage, never from the request. | |
| 233 | + * | |
| 234 | + * Structure (order, position, insertion, deletion) is deliberately NOT | |
| 235 | + * guarded — moving or removing a leftover Pro element is legitimate, and the | |
| 236 | + * canvas element toolbar's delete action is there for exactly that. | |
| 237 | + * | |
| 238 | + * Structure (order, position, insertion, deletion) is deliberately NOT | |
| 239 | + * guarded — moving or removing a leftover Pro element is legitimate, and the | |
| 240 | + * canvas element toolbar's delete action is there for exactly that. | |
| 241 | + * | |
| 242 | + * No-ops entirely when Pro is active. Entitlement is read live from | |
| 243 | + * `better_payment/pro_enabled` on every save, so a previously-saved campaign | |
| 244 | + * grants nothing. | |
| 245 | + * | |
| 246 | + * @param int $post_id Campaign post ID. | |
| 247 | + * @param mixed $layout_json Sanitized layout JSON about to be stored. Typed | |
| 248 | + * loosely because the meta_fields() sanitizer is | |
| 249 | + * filterable — a third party can swap in one that | |
| 250 | + * returns something else. | |
| 251 | + * @return string Layout JSON with Pro-element settings enforced. | |
| 252 | + */ | |
| 253 | + public static function enforce_pro_entitlement( int $post_id, $layout_json ): string { | |
| 254 | + if ( ! is_string( $layout_json ) ) { | |
| 255 | + return '[]'; | |
| 256 | + } | |
| 257 | + | |
| 258 | + if ( apply_filters( 'better_payment/pro_enabled', false ) ) { | |
| 259 | + return $layout_json; | |
| 260 | + } | |
| 261 | + | |
| 262 | + $incoming = json_decode( $layout_json, true ); | |
| 263 | + if ( ! is_array( $incoming ) ) { | |
| 264 | + return $layout_json; | |
| 265 | + } | |
| 266 | + | |
| 267 | + $locked = []; | |
| 268 | + foreach ( ElementRegistry::get_all() as $type => $schema ) { | |
| 269 | + if ( ! empty( $schema['pro'] ) ) { | |
| 270 | + $locked[ $type ] = isset( $schema['defaultSettings'] ) && is_array( $schema['defaultSettings'] ) | |
| 271 | + ? $schema['defaultSettings'] | |
| 272 | + : []; | |
| 273 | + } | |
| 274 | + } | |
| 275 | + | |
| 276 | + if ( empty( $locked ) ) { | |
| 277 | + return $layout_json; | |
| 278 | + } | |
| 279 | + | |
| 280 | + $stored = json_decode( (string) get_post_meta( $post_id, '_bpc_fields_layout', true ), true ); | |
| 281 | + $pool = self::collect_locked_elements( is_array( $stored ) ? $stored : [], $locked ); | |
| 282 | + $claims = self::collect_locked_elements( $incoming, $locked ); | |
| 283 | + $resolved = self::resolve_locked_settings( $claims, $pool, $locked ); | |
| 284 | + | |
| 285 | + $ordinal = 0; | |
| 286 | + $guarded = self::restore_locked_settings( $incoming, $locked, $resolved, $ordinal ); | |
| 287 | + | |
| 288 | + $encoded = wp_json_encode( $guarded ); | |
| 289 | + | |
| 290 | + return is_string( $encoded ) ? $encoded : $layout_json; | |
| 291 | + } | |
| 292 | + | |
| 293 | + /** | |
| 294 | + * Every locked (Pro) element in a layout, in document order. | |
| 295 | + * | |
| 296 | + * Walks recursively rather than assuming `columns[].elements[]` so the legacy | |
| 297 | + * flat-array layout format is covered too. It stops at a locked element, and | |
| 298 | + * {@see self::restore_locked_settings()} walks identically, so the Nth entry | |
| 299 | + * here is the Nth element that walk rewrites. | |
| 300 | + * | |
| 301 | + * @param array $node | |
| 302 | + * @param array<string, array> $locked Type => default settings. | |
| 303 | + * @param array $acc | |
| 304 | + * @return array<int, array{id: string, type: string, settings: array}> | |
| 305 | + */ | |
| 306 | + private static function collect_locked_elements( array $node, array $locked, array $acc = [] ): array { | |
| 307 | + if ( isset( $node['type'] ) && is_string( $node['type'] ) && isset( $locked[ $node['type'] ] ) ) { | |
| 308 | + $acc[] = [ | |
| 309 | + 'id' => isset( $node['id'] ) && is_scalar( $node['id'] ) ? (string) $node['id'] : '', | |
| 310 | + 'type' => $node['type'], | |
| 311 | + 'settings' => isset( $node['settings'] ) && is_array( $node['settings'] ) ? $node['settings'] : [], | |
| 312 | + ]; | |
| 313 | + | |
| 314 | + return $acc; | |
| 315 | + } | |
| 316 | + | |
| 317 | + foreach ( $node as $child ) { | |
| 318 | + if ( is_array( $child ) ) { | |
| 319 | + $acc = self::collect_locked_elements( $child, $locked, $acc ); | |
| 320 | + } | |
| 321 | + } | |
| 322 | + | |
| 323 | + return $acc; | |
| 324 | + } | |
| 325 | + | |
| 326 | + /** | |
| 327 | + * Decide the settings each incoming locked element is saved with. | |
| 328 | + * | |
| 329 | + * Pass 1 claims stored elements by id AND type. Pass 2 gives each still | |
| 330 | + * unresolved incoming element the next unclaimed stored element of the same | |
| 331 | + * type, in document order — the same element under a re-minted id (an AI | |
| 332 | + * `set_layout`, an undo, any client that regenerates ids). Whatever is left | |
| 333 | + * over is genuinely new and gets the registered defaults. A stored element is | |
| 334 | + * claimed at most once and never by another type. | |
| 335 | + * | |
| 336 | + * @param array<int, array{id: string, type: string, settings: array}> $incoming Locked elements being saved. | |
| 337 | + * @param array<int, array{id: string, type: string, settings: array}> $stored Locked elements already stored. | |
| 338 | + * @param array<string, array> $locked Type => default settings. | |
| 339 | + * @return array<int, array> Incoming ordinal => settings to save. | |
| 340 | + */ | |
| 341 | + private static function resolve_locked_settings( array $incoming, array $stored, array $locked ): array { | |
| 342 | + $resolved = []; | |
| 343 | + $claimed = []; | |
| 344 | + | |
| 345 | + foreach ( $incoming as $i => $element ) { | |
| 346 | + if ( '' === $element['id'] ) { | |
| 347 | + continue; | |
| 348 | + } | |
| 349 | + foreach ( $stored as $j => $candidate ) { | |
| 350 | + if ( ! isset( $claimed[ $j ] ) && $candidate['id'] === $element['id'] && $candidate['type'] === $element['type'] ) { | |
| 351 | + $resolved[ $i ] = $candidate['settings']; | |
| 352 | + $claimed[ $j ] = true; | |
| 353 | + break; | |
| 354 | + } | |
| 355 | + } | |
| 356 | + } | |
| 357 | + | |
| 358 | + foreach ( $incoming as $i => $element ) { | |
| 359 | + if ( array_key_exists( $i, $resolved ) ) { | |
| 360 | + continue; | |
| 361 | + } | |
| 362 | + | |
| 363 | + $resolved[ $i ] = $locked[ $element['type'] ]; | |
| 364 | + | |
| 365 | + foreach ( $stored as $j => $candidate ) { | |
| 366 | + if ( ! isset( $claimed[ $j ] ) && $candidate['type'] === $element['type'] ) { | |
| 367 | + $resolved[ $i ] = $candidate['settings']; | |
| 368 | + $claimed[ $j ] = true; | |
| 369 | + break; | |
| 370 | + } | |
| 371 | + } | |
| 372 | + } | |
| 373 | + | |
| 374 | + return $resolved; | |
| 375 | + } | |
| 376 | + | |
| 377 | + /** | |
| 378 | + * Replace the settings of every locked element with the ones resolved for it. | |
| 379 | + * Walks exactly like {@see self::collect_locked_elements()}; `$ordinal` counts | |
| 380 | + * the locked elements seen so far. | |
| 381 | + * | |
| 382 | + * @param array $node | |
| 383 | + * @param array<string, array> $locked Type => default settings. | |
| 384 | + * @param array<int, array> $resolved Ordinal => settings. | |
| 385 | + * @param int $ordinal Running locked-element counter. | |
| 386 | + * @return array | |
| 387 | + */ | |
| 388 | + private static function restore_locked_settings( array $node, array $locked, array $resolved, int &$ordinal ): array { | |
| 389 | + if ( isset( $node['type'] ) && is_string( $node['type'] ) && isset( $locked[ $node['type'] ] ) ) { | |
| 390 | + $node['settings'] = $resolved[ $ordinal ] ?? $locked[ $node['type'] ]; | |
| 391 | + ++$ordinal; | |
| 392 | + | |
| 393 | + return $node; | |
| 394 | + } | |
| 395 | + | |
| 396 | + foreach ( $node as $key => $child ) { | |
| 397 | + if ( is_array( $child ) ) { | |
| 398 | + $node[ $key ] = self::restore_locked_settings( $child, $locked, $resolved, $ordinal ); | |
| 399 | + } | |
| 400 | + } | |
| 401 | + | |
| 402 | + return $node; | |
| 181 | 403 | } |
| 182 | 404 | |
| 183 | 405 | public static function sanitize_json( $value ): string { |
| 184 | 406 | if ( is_array( $value ) ) { |
