| @@ -1,10 +1,7 @@ | ||
| 1 | 1 | <?php |
| 2 | 2 | /** |
| 3 | 3 | * Extend and replace the wpdb class. |
| 4 | - * | |
| 5 | - * @package wp-sqlite-integration | |
| 6 | - * @since 1.0.0 | |
| 7 | 4 | */ |
| 8 | 5 | |
| 9 | 6 | /** |
| 10 | 7 | * This class extends wpdb and replaces it. |
| @@ -15,9 +12,9 @@ | ||
| 15 | 12 | |
| 16 | 13 | /** |
| 17 | 14 | * Database Handle |
| 18 | 15 | * |
| 19 | - * @var WP_SQLite_Translator | |
| 16 | + * @var WP_MySQL_On_SQLite | |
| 20 | 17 | */ |
| 21 | 18 | protected $dbh; |
| 22 | 19 | |
| 23 | 20 | /** |
| @@ -56,8 +53,22 @@ | ||
| 56 | 53 | $this->charset = 'utf8mb4'; |
| 57 | 54 | } |
| 58 | 55 | |
| 59 | 56 | /** |
| 57 | + * Returns the active MySQL-on-SQLite driver. | |
| 58 | + * | |
| 59 | + * @return WP_MySQL_On_SQLite The active driver. | |
| 60 | + * @throws RuntimeException When there is no active database connection. | |
| 61 | + */ | |
| 62 | + public function get_driver(): WP_MySQL_On_SQLite { | |
| 63 | + if ( ! $this->dbh ) { | |
| 64 | + throw new RuntimeException( 'Cannot access the driver without an active database connection.' ); | |
| 65 | + } | |
| 66 | + | |
| 67 | + return $this->dbh; | |
| 68 | + } | |
| 69 | + | |
| 70 | + /** | |
| 60 | 71 | * Method to set character set for the database. |
| 61 | 72 | * |
| 62 | 73 | * This overrides wpdb::set_charset(), only to dummy out the MySQL function. |
| 63 | 74 | * |
| @@ -70,22 +81,64 @@ | ||
| 70 | 81 | public function set_charset( $dbh, $charset = null, $collate = null ) { |
| 71 | 82 | } |
| 72 | 83 | |
| 73 | 84 | /** |
| 74 | - * Method to get the character set for the database. | |
| 75 | - * Hardcoded to utf8mb4 for now. | |
| 85 | + * Retrieves the character set for the given column. | |
| 76 | 86 | * |
| 77 | - * @param string $table The table name. | |
| 78 | - * @param string $column The column name. | |
| 87 | + * This overrides wpdb::get_col_charset() to enable the parent's implementation | |
| 88 | + * for SQLite by temporarily setting the is_mysql flag. | |
| 79 | 89 | * |
| 80 | - * @return string The character set. | |
| 90 | + * @see wpdb::get_col_charset() | |
| 91 | + * | |
| 92 | + * @param string $table Table name. | |
| 93 | + * @param string $column Column name. | |
| 94 | + * @return string|false|WP_Error Column character set as a string. False if the column has | |
| 95 | + * no character set. WP_Error object on failure. | |
| 81 | 96 | */ |
| 82 | 97 | public function get_col_charset( $table, $column ) { |
| 83 | - // Hardcoded for now. | |
| 84 | - return 'utf8mb4'; | |
| 98 | + $original_is_mysql = $this->is_mysql ?? null; | |
| 99 | + | |
| 100 | + /* | |
| 101 | + * The parent method returns early when `$this->is_mysql` is falsy. | |
| 102 | + * Since SQLite doesn't set this flag, we enable it temporarily so | |
| 103 | + * the parent can run its full logic — querying column metadata via | |
| 104 | + * SHOW FULL COLUMNS (which the SQLite driver translates) and | |
| 105 | + * populating the `$this->col_meta` cache. | |
| 106 | + */ | |
| 107 | + try { | |
| 108 | + $this->is_mysql = true; | |
| 109 | + return parent::get_col_charset( $table, $column ); | |
| 110 | + } finally { | |
| 111 | + $this->is_mysql = $original_is_mysql; | |
| 112 | + } | |
| 85 | 113 | } |
| 86 | 114 | |
| 87 | 115 | /** |
| 116 | + * Retrieves the maximum string length allowed in a given column. | |
| 117 | + * | |
| 118 | + * This overrides wpdb::get_col_length() to enable the parent's implementation | |
| 119 | + * for SQLite by temporarily setting the is_mysql flag. | |
| 120 | + * | |
| 121 | + * @see wpdb::get_col_length() | |
| 122 | + * | |
| 123 | + * @param string $table Table name. | |
| 124 | + * @param string $column Column name. | |
| 125 | + * @return array|false|WP_Error Column length information, false if the column has | |
| 126 | + * no length. WP_Error object on failure. | |
| 127 | + */ | |
| 128 | + public function get_col_length( $table, $column ) { | |
| 129 | + $original_is_mysql = $this->is_mysql ?? null; | |
| 130 | + | |
| 131 | + // See get_col_charset() for an explanation of the is_mysql flag. | |
| 132 | + try { | |
| 133 | + $this->is_mysql = true; | |
| 134 | + return parent::get_col_length( $table, $column ); | |
| 135 | + } finally { | |
| 136 | + $this->is_mysql = $original_is_mysql; | |
| 137 | + } | |
| 138 | + } | |
| 139 | + | |
| 140 | + /** | |
| 88 | 141 | * Changes the current SQL mode, and ensures its WordPress compatibility. |
| 89 | 142 | * |
| 90 | 143 | * If no modes are passed, it will ensure the current MySQL server modes are compatible. |
| 91 | 144 | * |
| @@ -93,14 +146,10 @@ | ||
| 93 | 146 | * |
| 94 | 147 | * @param array $modes Optional. A list of SQL modes to set. Default empty array. |
| 95 | 148 | */ |
| 96 | 149 | public function set_sql_mode( $modes = array() ) { |
| 97 | - if ( ! $this->dbh instanceof WP_SQLite_Driver ) { | |
| 98 | - return; | |
| 99 | - } | |
| 100 | - | |
| 101 | 150 | if ( empty( $modes ) ) { |
| 102 | - $result = $this->dbh->query( 'SELECT @@SESSION.sql_mode' ); | |
| 151 | + $result = $this->dbh->query( 'SELECT @@SESSION.sql_mode' )->fetchAll( PDO::FETCH_OBJ ); // phpcs:ignore WordPress.DB.RestrictedClasses.mysql__PDO | |
| 103 | 152 | if ( ! isset( $result[0] ) ) { |
| 104 | 153 | return; |
| 105 | 154 | } |
| 106 | 155 | |
| @@ -133,17 +182,101 @@ | ||
| 133 | 182 | } |
| 134 | 183 | |
| 135 | 184 | /** |
| 136 | 185 | * Closes the current database connection. |
| 137 | - * Noop in SQLite. | |
| 138 | 186 | * |
| 139 | - * @return bool True to indicate the connection was successfully closed. | |
| 187 | + * This overrides wpdb::close() while closely mirroring its implementation. | |
| 188 | + * | |
| 189 | + * @see wpdb::close() | |
| 190 | + * | |
| 191 | + * @return bool True if the connection was successfully closed, | |
| 192 | + * false if it wasn't, or if the connection doesn't exist. | |
| 140 | 193 | */ |
| 141 | 194 | public function close() { |
| 195 | + if ( ! $this->dbh ) { | |
| 196 | + return false; | |
| 197 | + } | |
| 198 | + | |
| 199 | + $connection = $this->dbh->get_connection(); | |
| 200 | + $pdo = $connection->get_pdo(); | |
| 201 | + | |
| 202 | + try { | |
| 203 | + if ( $this->dbh->inTransaction() ) { | |
| 204 | + $this->dbh->rollBack(); | |
| 205 | + } elseif ( $pdo->inTransaction() ) { | |
| 206 | + $pdo->rollBack(); | |
| 207 | + } else { | |
| 208 | + /* | |
| 209 | + * On PHP < 8.4, PDO cannot detect transactions started via SQL. | |
| 210 | + * A savepoint ensures ROLLBACK succeeds with or without one. | |
| 211 | + */ | |
| 212 | + $pdo->exec( 'SAVEPOINT wp_sqlite_db_close' ); | |
| 213 | + $pdo->exec( 'ROLLBACK' ); | |
| 214 | + } | |
| 215 | + } catch ( Throwable $e ) { | |
| 216 | + return false; | |
| 217 | + } | |
| 218 | + | |
| 219 | + if ( | |
| 220 | + isset( $GLOBALS['@pdo'] ) | |
| 221 | + && $GLOBALS['@pdo'] === $pdo | |
| 222 | + ) { | |
| 223 | + unset( $GLOBALS['@pdo'] ); | |
| 224 | + } | |
| 225 | + | |
| 226 | + $connection->set_query_logger( null ); | |
| 227 | + $this->result = null; | |
| 228 | + $this->dbh = null; | |
| 229 | + $this->ready = false; | |
| 230 | + $this->has_connected = false; | |
| 231 | + | |
| 142 | 232 | return true; |
| 143 | 233 | } |
| 144 | 234 | |
| 145 | 235 | /** |
| 236 | + * Determines the best charset and collation to use given a charset and collation. | |
| 237 | + * | |
| 238 | + * For example, when able, utf8mb4 should be used instead of utf8. | |
| 239 | + * | |
| 240 | + * This overrides wpdb::determine_charset() while closely mirroring its implementation. | |
| 241 | + * The override is needed because the parent checks for a mysqli connection object. | |
| 242 | + * | |
| 243 | + * @param string $charset The character set to check. | |
| 244 | + * @param string $collate The collation to check. | |
| 245 | + * @return array { | |
| 246 | + * The most appropriate character set and collation to use. | |
| 247 | + * | |
| 248 | + * @type string $charset Character set. | |
| 249 | + * @type string $collate Collation. | |
| 250 | + * } | |
| 251 | + */ | |
| 252 | + public function determine_charset( $charset, $collate ) { | |
| 253 | + if ( ! $this->dbh ) { | |
| 254 | + return compact( 'charset', 'collate' ); | |
| 255 | + } | |
| 256 | + | |
| 257 | + if ( 'utf8' === $charset ) { | |
| 258 | + $charset = 'utf8mb4'; | |
| 259 | + } | |
| 260 | + | |
| 261 | + if ( 'utf8mb4' === $charset ) { | |
| 262 | + // _general_ is outdated, so we can upgrade it to _unicode_, instead. | |
| 263 | + if ( ! $collate || 'utf8_general_ci' === $collate ) { | |
| 264 | + $collate = 'utf8mb4_unicode_ci'; | |
| 265 | + } else { | |
| 266 | + $collate = str_replace( 'utf8_', 'utf8mb4_', $collate ); | |
| 267 | + } | |
| 268 | + } | |
| 269 | + | |
| 270 | + // _unicode_520_ is a better collation, we should use that when it's available. | |
| 271 | + if ( $this->has_cap( 'utf8mb4_520' ) && 'utf8mb4_unicode_ci' === $collate ) { | |
| 272 | + $collate = 'utf8mb4_unicode_520_ci'; | |
| 273 | + } | |
| 274 | + | |
| 275 | + return compact( 'charset', 'collate' ); | |
| 276 | + } | |
| 277 | + | |
| 278 | + /** | |
| 146 | 279 | * Method to select the database connection. |
| 147 | 280 | * |
| 148 | 281 | * This overrides wpdb::select(), only to dummy out the MySQL function. |
| 149 | 282 | * |
| @@ -165,37 +298,23 @@ | ||
| 165 | 298 | * |
| 166 | 299 | * @param string $data The string to escape. |
| 167 | 300 | * |
| 168 | 301 | * @return string escaped |
| 302 | + * @throws RuntimeException When the database connection is not initialized. | |
| 169 | 303 | */ |
| 170 | 304 | public function _real_escape( $data ) { |
| 171 | 305 | if ( ! is_scalar( $data ) ) { |
| 172 | 306 | return ''; |
| 173 | 307 | } |
| 174 | - $escaped = addslashes( $data ); | |
| 175 | - return $this->add_placeholder_escape( $escaped ); | |
| 176 | - } | |
| 177 | 308 | |
| 178 | - /** | |
| 179 | - * Method to dummy out wpdb::esc_like() function. | |
| 180 | - * | |
| 181 | - * WordPress 4.0.0 introduced esc_like() function that adds backslashes to %, | |
| 182 | - * underscore and backslash, which is not interpreted as escape character | |
| 183 | - * by SQLite. So we override it and dummy out this function. | |
| 184 | - * | |
| 185 | - * @param string $text The raw text to be escaped. The input typed by the user should have no | |
| 186 | - * extra or deleted slashes. | |
| 187 | - * | |
| 188 | - * @return string Text in the form of a LIKE phrase. The output is not SQL safe. Call $wpdb::prepare() | |
| 189 | - * or real_escape next. | |
| 190 | - */ | |
| 191 | - public function esc_like( $text ) { | |
| 192 | - // The new driver adds "ESCAPE '\\'" to every LIKE expression by default. | |
| 193 | - // We only need to overload this function to a no-op for the old driver. | |
| 194 | - if ( $this->dbh instanceof WP_SQLite_Driver ) { | |
| 195 | - return parent::esc_like( $text ); | |
| 309 | + if ( ! $this->dbh ) { | |
| 310 | + throw new RuntimeException( 'Cannot escape data without an active database connection.' ); | |
| 196 | 311 | } |
| 197 | - return $text; | |
| 312 | + | |
| 313 | + // Escape the string without bounding quotes to mirror mysqli_real_escape_string(). | |
| 314 | + $quoted = $this->dbh->quote( (string) $data ); | |
| 315 | + $escaped = substr( $quoted, 1, -1 ); | |
| 316 | + return $this->add_placeholder_escape( $escaped ); | |
| 198 | 317 | } |
| 199 | 318 | |
| 200 | 319 | /** |
| 201 | 320 | * Prints SQL/DB error. |
| @@ -293,21 +412,27 @@ | ||
| 293 | 412 | * |
| 294 | 413 | * @see wpdb::db_connect() |
| 295 | 414 | * |
| 296 | 415 | * @param bool $allow_bail Not used. |
| 297 | - * @return void | |
| 416 | + * @return bool True on a successful connection, false on failure. | |
| 298 | 417 | */ |
| 299 | 418 | public function db_connect( $allow_bail = true ) { |
| 300 | 419 | if ( $this->dbh ) { |
| 301 | - return; | |
| 420 | + return $this->ready; | |
| 302 | 421 | } |
| 303 | - $this->init_charset(); | |
| 304 | 422 | |
| 305 | - $pdo = null; | |
| 423 | + $this->last_error = ''; | |
| 306 | 424 | if ( isset( $GLOBALS['@pdo'] ) ) { |
| 307 | - $pdo = $GLOBALS['@pdo']; | |
| 425 | + trigger_error( | |
| 426 | + 'PDO injection via $GLOBALS[\'@pdo\'] is no longer supported. The existing PDO will be ignored and a new connection will be created.', | |
| 427 | + E_USER_WARNING | |
| 428 | + ); | |
| 308 | 429 | } |
| 309 | 430 | |
| 431 | + if ( ! isset( $this->charset ) ) { | |
| 432 | + $this->init_charset(); | |
| 433 | + } | |
| 434 | + | |
| 310 | 435 | // Migrate the database file from a legacy path, if it exists. |
| 311 | 436 | if ( ! defined( 'DB_FILE' ) && ! file_exists( FQDB ) ) { |
| 312 | 437 | $old_db_path = FQDBDIR . '.ht.sqlite.php'; |
| 313 | 438 | |
| @@ -325,53 +450,70 @@ | ||
| 325 | 450 | } |
| 326 | 451 | } |
| 327 | 452 | } |
| 328 | 453 | |
| 329 | - if ( defined( 'WP_SQLITE_AST_DRIVER' ) && WP_SQLITE_AST_DRIVER ) { | |
| 330 | - if ( null === $this->dbname || '' === $this->dbname ) { | |
| 331 | - $this->bail( | |
| 332 | - 'The database name was not set. The SQLite driver requires a database name to be set to emulate MySQL information schema tables.', | |
| 333 | - 'db_connect_fail' | |
| 334 | - ); | |
| 335 | - return false; | |
| 336 | - } | |
| 454 | + if ( null === $this->dbname || '' === $this->dbname ) { | |
| 455 | + $this->bail( | |
| 456 | + 'The database name was not set. The SQLite driver requires a database name to be set to emulate MySQL information schema tables.', | |
| 457 | + 'db_connect_fail' | |
| 458 | + ); | |
| 459 | + return false; | |
| 460 | + } | |
| 337 | 461 | |
| 338 | - $this->ensure_database_directory( FQDB ); | |
| 462 | + $this->ensure_database_directory( FQDB ); | |
| 339 | 463 | |
| 340 | - try { | |
| 341 | - $connection = new WP_SQLite_Connection( | |
| 342 | - array( | |
| 343 | - 'pdo' => $pdo, | |
| 344 | - 'path' => FQDB, | |
| 345 | - 'journal_mode' => defined( 'SQLITE_JOURNAL_MODE' ) ? SQLITE_JOURNAL_MODE : null, | |
| 346 | - ) | |
| 347 | - ); | |
| 348 | - $this->dbh = new WP_SQLite_Driver( $connection, $this->dbname ); | |
| 349 | - $GLOBALS['@pdo'] = $this->dbh->get_connection()->get_pdo(); | |
| 350 | - } catch ( Throwable $e ) { | |
| 351 | - $this->last_error = $this->format_error_message( $e ); | |
| 352 | - } | |
| 353 | - } else { | |
| 354 | - $this->dbh = new WP_SQLite_Translator( $pdo ); | |
| 355 | - $this->last_error = $this->dbh->get_error_message(); | |
| 356 | - $GLOBALS['@pdo'] = $this->dbh->get_pdo(); | |
| 464 | + try { | |
| 465 | + $options = array( | |
| 466 | + 'sqlite_journal_mode' => defined( 'SQLITE_JOURNAL_MODE' ) ? SQLITE_JOURNAL_MODE : null, | |
| 467 | + ); | |
| 468 | + $dbh = new WP_MySQL_On_SQLite( | |
| 469 | + sprintf( | |
| 470 | + 'mysql-on-sqlite:path=%s;dbname=%s', | |
| 471 | + str_replace( ';', ';;', FQDB ), | |
| 472 | + str_replace( ';', ';;', $this->dbname ) | |
| 473 | + ), | |
| 474 | + null, | |
| 475 | + null, | |
| 476 | + $options | |
| 477 | + ); | |
| 478 | + $dbh->setAttribute( PDO::ATTR_STRINGIFY_FETCHES, true ); // phpcs:ignore WordPress.DB.RestrictedClasses.mysql__PDO | |
| 479 | + $this->dbh = $dbh; | |
| 480 | + | |
| 481 | + /** | |
| 482 | + * Exposes the underlying PDO SQLite connection for backward compatibility. | |
| 483 | + * | |
| 484 | + * @deprecated 3.0.0 Use WP_SQLite_DB::get_driver() with | |
| 485 | + * WP_MySQL_On_SQLite::get_sqlite_pdo() instead. | |
| 486 | + */ | |
| 487 | + $GLOBALS['@pdo'] = $dbh->get_sqlite_pdo(); | |
| 488 | + } catch ( Throwable $e ) { | |
| 489 | + $this->last_error = $this->format_error_message( $e ); | |
| 357 | 490 | } |
| 358 | 491 | if ( $this->last_error ) { |
| 359 | 492 | return false; |
| 360 | 493 | } |
| 494 | + | |
| 495 | + $this->has_connected = true; | |
| 496 | + $this->set_charset( $this->dbh ); | |
| 497 | + | |
| 361 | 498 | $this->ready = true; |
| 362 | 499 | $this->set_sql_mode(); |
| 500 | + return true; | |
| 363 | 501 | } |
| 364 | 502 | |
| 365 | 503 | /** |
| 366 | - * Method to dummy out wpdb::check_connection() | |
| 504 | + * Checks that the database connection is available. | |
| 367 | 505 | * |
| 368 | 506 | * @param bool $allow_bail Not used. |
| 369 | 507 | * |
| 370 | - * @return bool | |
| 508 | + * @return bool True when the connection is available, false otherwise. | |
| 371 | 509 | */ |
| 372 | 510 | public function check_connection( $allow_bail = true ) { |
| 373 | - return true; | |
| 511 | + if ( $this->dbh ) { | |
| 512 | + return true; | |
| 513 | + } | |
| 514 | + | |
| 515 | + return $this->db_connect( $allow_bail ); | |
| 374 | 516 | } |
| 375 | 517 | |
| 376 | 518 | /** |
| 377 | 519 | * Prepares a SQL query for safe execution. |
| @@ -420,8 +562,9 @@ | ||
| 420 | 562 | $this->hide_errors(); |
| 421 | 563 | } |
| 422 | 564 | |
| 423 | 565 | if ( ! $this->ready ) { |
| 566 | + $this->check_current_query = true; | |
| 424 | 567 | return false; |
| 425 | 568 | } |
| 426 | 569 | |
| 427 | 570 | $query = apply_filters( 'query', $query ); |
| @@ -435,24 +578,32 @@ | ||
| 435 | 578 | |
| 436 | 579 | // Log how the function was called. |
| 437 | 580 | $this->func_call = "\$db->query(\"$query\")"; |
| 438 | 581 | |
| 582 | + /* | |
| 583 | + * Mirror wpdb's query text validation. | |
| 584 | + * TODO: Add full charset enforcement to MySQL on SQLite, where column | |
| 585 | + * types and SQL mode are known, so all callers are protected. | |
| 586 | + */ | |
| 587 | + if ( $this->check_current_query && ! $this->check_ascii( $query ) ) { | |
| 588 | + $stripped_query = $this->strip_invalid_text_from_query( $query ); | |
| 589 | + // Charset discovery can run queries, so clear their results. | |
| 590 | + $this->flush(); | |
| 591 | + if ( $stripped_query !== $query ) { | |
| 592 | + $this->insert_id = 0; | |
| 593 | + $this->last_query = $query; | |
| 594 | + wp_load_translations_early(); | |
| 595 | + $this->last_error = __( 'WordPress database error: Could not perform query because it contains invalid data.' ); | |
| 596 | + return false; | |
| 597 | + } | |
| 598 | + } | |
| 599 | + $this->check_current_query = true; | |
| 600 | + | |
| 439 | 601 | // Keep track of the last query for debug. |
| 440 | 602 | $this->last_query = $query; |
| 441 | 603 | |
| 442 | - // Save the query count before running another query. | |
| 604 | + // Save the query count after any charset discovery queries. | |
| 443 | 605 | $last_query_count = count( $this->queries ?? array() ); |
| 444 | - | |
| 445 | - /* | |
| 446 | - * @TODO: WPDB uses "$this->check_current_query" to check table/column | |
| 447 | - * charset and strip all invalid characters from the query. | |
| 448 | - * This is an involved process that we can bypass for SQLite, | |
| 449 | - * if we simply strip all invalid UTF-8 characters from the query. | |
| 450 | - * | |
| 451 | - * To do so, mb_convert_encoding can be used with an optional | |
| 452 | - * fallback to a htmlspecialchars method. E.g.: | |
| 453 | - * https://github.com/nette/utils/blob/be534713c227aeef57ce1883fc17bc9f9e29eca2/src/Utils/Strings.php#L42 | |
| 454 | - */ | |
| 455 | 606 | $this->_do_query( $query ); |
| 456 | 607 | |
| 457 | 608 | if ( $this->last_error ) { |
| 458 | 609 | // Clear insert_id on a subsequent failed insert. |
| @@ -466,17 +617,13 @@ | ||
| 466 | 617 | |
| 467 | 618 | if ( preg_match( '/^\s*(create|alter|truncate|drop)\s/i', $query ) ) { |
| 468 | 619 | $return_val = true; |
| 469 | 620 | } elseif ( preg_match( '/^\s*(insert|delete|update|replace)\s/i', $query ) ) { |
| 470 | - if ( $this->dbh instanceof WP_SQLite_Driver ) { | |
| 471 | - $this->rows_affected = $this->dbh->get_last_return_value(); | |
| 472 | - } else { | |
| 473 | - $this->rows_affected = $this->dbh->get_affected_rows(); | |
| 474 | - } | |
| 621 | + $this->rows_affected = $this->result->rowCount(); | |
| 475 | 622 | |
| 476 | 623 | // Take note of the insert_id. |
| 477 | 624 | if ( preg_match( '/^\s*(insert|replace)\s/i', $query ) ) { |
| 478 | - $this->insert_id = $this->dbh->get_insert_id(); | |
| 625 | + $this->insert_id = (int) $this->dbh->lastInsertId(); | |
| 479 | 626 | } |
| 480 | 627 | |
| 481 | 628 | // Return number of rows affected. |
| 482 | 629 | $return_val = $this->rows_affected; |
| @@ -482,11 +629,11 @@ | ||
| 482 | 629 | $return_val = $this->rows_affected; |
| 483 | 630 | } else { |
| 484 | 631 | $num_rows = 0; |
| 485 | 632 | |
| 486 | - if ( is_array( $this->result ) ) { | |
| 487 | - $this->last_result = $this->result; | |
| 488 | - $num_rows = count( $this->result ); | |
| 633 | + if ( $this->result->columnCount() > 0 ) { | |
| 634 | + $this->last_result = $this->result->fetchAll(); | |
| 635 | + $num_rows = count( $this->last_result ); | |
| 489 | 636 | } |
| 490 | 637 | |
| 491 | 638 | // Log and return the number of rows selected. |
| 492 | 639 | $this->num_rows = $num_rows; |
| @@ -515,13 +662,9 @@ | ||
| 515 | 662 | $this->queries[ $i ]['result'] = (int) $return_val; |
| 516 | 663 | } |
| 517 | 664 | |
| 518 | 665 | // Add SQLite query data. |
| 519 | - if ( $this->dbh instanceof WP_SQLite_Driver ) { | |
| 520 | - $this->queries[ $i ]['sqlite_queries'] = $this->dbh->get_last_sqlite_queries(); | |
| 521 | - } else { | |
| 522 | - $this->queries[ $i ]['sqlite_queries'] = $this->dbh->executed_sqlite_queries; | |
| 523 | - } | |
| 666 | + $this->queries[ $i ]['sqlite_queries'] = $this->dbh->get_last_sqlite_queries(); | |
| 524 | 667 | } |
| 525 | 668 | return $return_val; |
| 526 | 669 | } |
| 527 | 670 | |
| @@ -539,17 +682,13 @@ | ||
| 539 | 682 | $this->timer_start(); |
| 540 | 683 | } |
| 541 | 684 | |
| 542 | 685 | try { |
| 543 | - $this->result = $this->dbh->query( $query ); | |
| 686 | + $this->result = $this->dbh->query( $query, PDO::FETCH_OBJ ); // phpcs:ignore WordPress.DB.RestrictedClasses.mysql__PDO | |
| 544 | 687 | } catch ( Throwable $e ) { |
| 545 | 688 | $this->last_error = $this->format_error_message( $e ); |
| 546 | 689 | } |
| 547 | 690 | |
| 548 | - if ( $this->dbh instanceof WP_SQLite_Translator ) { | |
| 549 | - $this->last_error = $this->dbh->get_error_message(); | |
| 550 | - } | |
| 551 | - | |
| 552 | 691 | ++$this->num_queries; |
| 553 | 692 | |
| 554 | 693 | if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) { |
| 555 | 694 | $this->log_query( |
| @@ -572,70 +711,79 @@ | ||
| 572 | 711 | protected function load_col_info() { |
| 573 | 712 | if ( $this->col_info ) { |
| 574 | 713 | return; |
| 575 | 714 | } |
| 576 | - if ( $this->dbh instanceof WP_SQLite_Driver ) { | |
| 577 | - $this->col_info = array(); | |
| 578 | - foreach ( $this->dbh->get_last_column_meta() as $column ) { | |
| 579 | - $this->col_info[] = (object) array( | |
| 580 | - 'name' => $column['name'], | |
| 581 | - 'orgname' => $column['mysqli:orgname'], | |
| 582 | - 'table' => $column['table'], | |
| 583 | - 'orgtable' => $column['mysqli:orgtable'], | |
| 584 | - 'def' => '', // Unused, always ''. | |
| 585 | - 'db' => $column['mysqli:db'], | |
| 586 | - 'catalog' => 'def', // Unused, always 'def'. | |
| 587 | - 'max_length' => 0, // As of PHP 8.1, this is always 0. | |
| 588 | - 'length' => $column['len'], | |
| 589 | - 'charsetnr' => $column['mysqli:charsetnr'], | |
| 590 | - 'flags' => $column['mysqli:flags'], | |
| 591 | - 'type' => $column['mysqli:type'], | |
| 592 | - 'decimals' => $column['precision'], | |
| 593 | - ); | |
| 594 | - } | |
| 595 | - } else { | |
| 596 | - $this->col_info = $this->dbh->get_columns(); | |
| 715 | + $this->col_info = array(); | |
| 716 | + if ( null === $this->result ) { | |
| 717 | + return; | |
| 597 | 718 | } |
| 719 | + for ( $i = 0; $i < $this->result->columnCount(); $i++ ) { | |
| 720 | + $column = $this->result->getColumnMeta( $i ); | |
| 721 | + $this->col_info[] = (object) array( | |
| 722 | + 'name' => $column['name'], | |
| 723 | + 'orgname' => $column['mysqli:orgname'], | |
| 724 | + 'table' => $column['table'], | |
| 725 | + 'orgtable' => $column['mysqli:orgtable'], | |
| 726 | + 'def' => '', // Unused, always ''. | |
| 727 | + 'db' => $column['mysqli:db'], | |
| 728 | + 'catalog' => 'def', // Unused, always 'def'. | |
| 729 | + 'max_length' => 0, // As of PHP 8.1, this is always 0. | |
| 730 | + 'length' => $column['len'], | |
| 731 | + 'charsetnr' => $column['mysqli:charsetnr'], | |
| 732 | + 'flags' => $column['mysqli:flags'], | |
| 733 | + 'type' => $column['mysqli:type'], | |
| 734 | + 'decimals' => $column['precision'], | |
| 735 | + ); | |
| 736 | + } | |
| 598 | 737 | } |
| 599 | 738 | |
| 600 | 739 | /** |
| 601 | - * Method to return what the database can do. | |
| 740 | + * Determines whether the database supports a given feature. | |
| 602 | 741 | * |
| 603 | - * This overrides wpdb::has_cap() to avoid using MySQL functions. | |
| 604 | - * SQLite supports subqueries, but not support collation, group_concat and set_charset. | |
| 742 | + * The utf8mb4 check is handled here because older WordPress versions inspect | |
| 743 | + * the MySQL client library. All other capabilities use the parent logic. | |
| 605 | 744 | * |
| 606 | 745 | * @see wpdb::has_cap() |
| 607 | 746 | * |
| 608 | - * @param string $db_cap The feature to check for. Accepts 'collation', | |
| 609 | - * 'group_concat', 'subqueries', 'set_charset', | |
| 610 | - * 'utf8mb4', or 'utf8mb4_520'. | |
| 611 | - * | |
| 612 | - * @return bool Whether the database feature is supported, false otherwise. | |
| 747 | + * @param string $db_cap The feature to check for. | |
| 748 | + * @return bool True when the database feature is supported, false otherwise. | |
| 613 | 749 | */ |
| 614 | 750 | public function has_cap( $db_cap ) { |
| 615 | - return 'subqueries' === strtolower( $db_cap ); | |
| 751 | + if ( 'utf8mb4' === strtolower( $db_cap ) ) { | |
| 752 | + return true; | |
| 753 | + } | |
| 754 | + | |
| 755 | + return parent::has_cap( $db_cap ); | |
| 616 | 756 | } |
| 617 | 757 | |
| 618 | 758 | /** |
| 619 | - * Method to return database version number. | |
| 759 | + * Retrieves the emulated database server version number. | |
| 620 | 760 | * |
| 621 | - * This overrides wpdb::db_version() to avoid using MySQL function. | |
| 622 | - * It returns mysql version number, but it means nothing for SQLite. | |
| 623 | - * So it return the newest mysql version. | |
| 761 | + * This mirrors wpdb::db_version(), but must also be defined here because | |
| 762 | + * WordPress 5.4 and older fetch server information directly from the MySQL | |
| 763 | + * extension instead of delegating to wpdb::db_server_info(). | |
| 624 | 764 | * |
| 625 | 765 | * @see wpdb::db_version() |
| 766 | + * | |
| 767 | + * @return string Version number on success, or an empty string while disconnected. | |
| 626 | 768 | */ |
| 627 | 769 | public function db_version() { |
| 628 | - return '8.0'; | |
| 770 | + return preg_replace( '/[^0-9.].*/', '', $this->db_server_info() ); | |
| 629 | 771 | } |
| 630 | 772 | |
| 631 | 773 | /** |
| 632 | - * Returns the version of the SQLite engine. | |
| 774 | + * Returns the raw version string of the emulated MySQL server. | |
| 633 | 775 | * |
| 634 | - * @return string SQLite engine version as a string. | |
| 776 | + * @see wpdb::db_server_info() | |
| 777 | + * | |
| 778 | + * @return string Emulated MySQL server version, or an empty string while disconnected. | |
| 635 | 779 | */ |
| 636 | 780 | public function db_server_info() { |
| 637 | - return $this->dbh->get_sqlite_version(); | |
| 781 | + if ( ! $this->dbh ) { | |
| 782 | + return ''; | |
| 783 | + } | |
| 784 | + | |
| 785 | + return $this->dbh->getAttribute( PDO::ATTR_SERVER_VERSION ); // phpcs:ignore WordPress.DB.RestrictedClasses.mysql__PDO | |
| 638 | 786 | } |
| 639 | 787 | |
| 640 | 788 | /** |
| 641 | 789 | * Make sure the SQLite database directory exists and is writable. |
| @@ -685,9 +833,9 @@ | ||
| 685 | 833 | } |
| 686 | 834 | |
| 687 | 835 | |
| 688 | 836 | /** |
| 689 | - * Format SQLite driver error message. | |
| 837 | + * Format MySQL-on-SQLite driver error message. | |
| 690 | 838 | * |
| 691 | 839 | * @return string |
| 692 | 840 | */ |
| 693 | 841 | private function format_error_message( Throwable $e ) { |
| @@ -693,10 +841,10 @@ | ||
| 693 | 841 | private function format_error_message( Throwable $e ) { |
| 694 | 842 | $output = '<div style="clear:both"> </div>' . PHP_EOL; |
| 695 | 843 | |
| 696 | 844 | // Queries. |
| 697 | - if ( $e instanceof WP_SQLite_Driver_Exception ) { | |
| 698 | - $driver = $e->getDriver(); | |
| 845 | + if ( $e instanceof WP_MySQL_On_SQLite_Exception ) { | |
| 846 | + $driver = $e->get_driver(); | |
| 699 | 847 | |
| 700 | 848 | $output .= '<div class="queries" style="clear:both;margin-bottom:2px;border:red dotted thin;">' . PHP_EOL; |
| 701 | 849 | $output .= '<p>MySQL query:</p>' . PHP_EOL; |
| 702 | 850 | $output .= '<p>' . $driver->get_last_mysql_query() . '</p>' . PHP_EOL; |
