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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * The phpMyFAQ\Database\PdoSqlsrv class provides methods and functions for MS SQL Server and SQL Azure databases with |
| 5 | * PDO. |
| 6 | * |
| 7 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 8 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 9 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 10 | * |
| 11 | * @package phpMyFAQ |
| 12 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 13 | * @copyright 2025-2026 phpMyFAQ Team |
| 14 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 15 | * @link https://www.phpmyfaq.de |
| 16 | * @since 2025-02-09 |
| 17 | */ |
| 18 | |
| 19 | declare(strict_types=1); |
| 20 | |
| 21 | namespace phpMyFAQ\Database; |
| 22 | |
| 23 | use PDO; |
| 24 | use PDOException; |
| 25 | use PDOStatement; |
| 26 | use phpMyFAQ\Core\Exception; |
| 27 | use SensitiveParameter; |
| 28 | |
| 29 | /** |
| 30 | * Class PdoSqlsrv |
| 31 | * |
| 32 | * @package phpMyFAQ\Database |
| 33 | */ |
| 34 | class PdoSqlsrv implements DatabaseDriver |
| 35 | { |
| 36 | /** |
| 37 | * @var string[] Tables. |
| 38 | */ |
| 39 | public array $tableNames = []; |
| 40 | |
| 41 | /** |
| 42 | * The connection object. |
| 43 | */ |
| 44 | private ?PDO $pdo = null; |
| 45 | |
| 46 | /** |
| 47 | * Returns the active connection or fails loudly when connect() has not |
| 48 | * been called yet or the connection was already closed. |
| 49 | * |
| 50 | * @throws Exception |
| 51 | */ |
| 52 | private function pdo(): PDO |
| 53 | { |
| 54 | return $this->pdo ?? throw new Exception(message: 'There is no open database connection.'); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * The query log string. |
| 59 | */ |
| 60 | private string $sqlLog = ''; |
| 61 | |
| 62 | /** |
| 63 | * The last query result for tracking affected rows. |
| 64 | */ |
| 65 | private ?PDOStatement $lastStatement = null; |
| 66 | |
| 67 | /** |
| 68 | * Connects to the database. |
| 69 | * |
| 70 | * @param string $host Hostname or path to socket |
| 71 | * @param string $user Username |
| 72 | * @param string $password Password |
| 73 | * @param string $database Database name |
| 74 | * @return null|bool true, if connected, otherwise false |
| 75 | * @throws Exception |
| 76 | */ |
| 77 | public function connect( |
| 78 | string $host, |
| 79 | #[SensitiveParameter] |
| 80 | string $user, |
| 81 | #[SensitiveParameter] |
| 82 | string $password, |
| 83 | string $database = '', |
| 84 | ?int $port = null, |
| 85 | ): ?bool { |
| 86 | $dsn = 'sqlsrv:Server=' . $host . ($port ? ',' . $port : '') . (';Database=' . $database); |
| 87 | try { |
| 88 | $this->pdo = new PDO($dsn, $user, $password); |
| 89 | $this->pdo()->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
| 90 | } catch (PDOException $pdoException) { |
| 91 | throw new Exception($pdoException->getMessage()); |
| 92 | } |
| 93 | |
| 94 | return true; |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Returns the error string. |
| 99 | */ |
| 100 | public function error(): string |
| 101 | { |
| 102 | return $this->pdo?->errorInfo()[2] ?? ''; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Escapes a string for use in a query. |
| 107 | * |
| 108 | * Note: Unlike PDO::quote(), this method intentionally does NOT add surrounding quotes. |
| 109 | * It only escapes special characters so callers can uniformly wrap values in SQL strings. |
| 110 | */ |
| 111 | public function escape(string $string): string |
| 112 | { |
| 113 | // For SQL Server, escape single quotes by doubling them (SQL standard) |
| 114 | return str_replace(search: "'", replace: "''", subject: $string); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Fetch a result row as an associative array. |
| 119 | */ |
| 120 | public function fetchArray(mixed $result): ?array |
| 121 | { |
| 122 | if (!$result instanceof PDOStatement) { |
| 123 | return null; |
| 124 | } |
| 125 | |
| 126 | $row = $result->fetch(PDO::FETCH_ASSOC); |
| 127 | |
| 128 | return is_array($row) ? $row : null; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Fetch a result row. |
| 133 | */ |
| 134 | public function fetchRow(mixed $result): mixed |
| 135 | { |
| 136 | if (!$result instanceof PDOStatement) { |
| 137 | return false; |
| 138 | } |
| 139 | |
| 140 | $row = $result->fetch(PDO::FETCH_NUM); |
| 141 | |
| 142 | return is_array($row) ? $row[0] ?? false : false; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Fetches a complete result as an object. |
| 147 | * |
| 148 | * @param mixed $result Result set |
| 149 | * @throws Exception |
| 150 | * @return list<\stdClass>|null |
| 151 | */ |
| 152 | public function fetchAll(mixed $result): ?array |
| 153 | { |
| 154 | if (!$result instanceof PDOStatement) { |
| 155 | throw new Exception('Error while fetching result: ' . $this->error()); |
| 156 | } |
| 157 | |
| 158 | /* @mago-expect lint:inline-variable-return - the variable carries the @var type for mago analyze */ |
| 159 | /** @var list<\stdClass> $rows */ |
| 160 | $rows = $result->fetchAll(PDO::FETCH_OBJ); |
| 161 | |
| 162 | return $rows; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Fetch a result row as an object. |
| 167 | * This function fetches a result row as an object. |
| 168 | * |
| 169 | * @return \stdClass|false|null |
| 170 | * |
| 171 | * @throws Exception |
| 172 | */ |
| 173 | public function fetchObject(mixed $result): mixed |
| 174 | { |
| 175 | if (!$result instanceof PDOStatement) { |
| 176 | return false; |
| 177 | } |
| 178 | |
| 179 | /* @mago-expect lint:inline-variable-return - the variable carries the @var type for mago analyze */ |
| 180 | /** @var \stdClass|false|null $row */ |
| 181 | $row = $result->fetch(PDO::FETCH_OBJ); |
| 182 | |
| 183 | return $row; |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Number of rows in a result. |
| 188 | */ |
| 189 | public function numRows(mixed $result): int |
| 190 | { |
| 191 | return $result instanceof PDOStatement ? $result->rowCount() : 0; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Logs the queries. |
| 196 | */ |
| 197 | public function log(): string |
| 198 | { |
| 199 | return $this->sqlLog; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * This function returns the table status. |
| 204 | * |
| 205 | * @param string $prefix Table prefix |
| 206 | * @return string[] |
| 207 | */ |
| 208 | public function getTableStatus(string $prefix = ''): array |
| 209 | { |
| 210 | $status = []; |
| 211 | foreach ($this->getTableNames($prefix) as $table) { |
| 212 | $status[$table] = $this->getOne('SELECT count(*) FROM ' . $table); |
| 213 | } |
| 214 | |
| 215 | return $status; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Returns an array with all table names. |
| 220 | * |
| 221 | * @todo Have to be refactored because of https://github.com/thorsten/phpMyFAQ/issues/965 |
| 222 | * |
| 223 | * @param string $prefix Table prefix |
| 224 | * |
| 225 | * @return string[] |
| 226 | */ |
| 227 | public function getTableNames(string $prefix = ''): array |
| 228 | { |
| 229 | return $this->tableNames = [ |
| 230 | $prefix . 'faqadminlog', |
| 231 | $prefix . 'faqattachment', |
| 232 | $prefix . 'faqattachment_file', |
| 233 | $prefix . 'faqbackup', |
| 234 | $prefix . 'faqbookmarks', |
| 235 | $prefix . 'faqcaptcha', |
| 236 | $prefix . 'faqcategories', |
| 237 | $prefix . 'faqcategoryrelations', |
| 238 | $prefix . 'faqcategory_group', |
| 239 | $prefix . 'faqcategory_news', |
| 240 | $prefix . 'faqcategory_order', |
| 241 | $prefix . 'faqcategory_user', |
| 242 | $prefix . 'faqchanges', |
| 243 | $prefix . 'faqchat_messages', |
| 244 | $prefix . 'faqcomments', |
| 245 | $prefix . 'faqconfig', |
| 246 | $prefix . 'faqcustompages', |
| 247 | $prefix . 'faqdata', |
| 248 | $prefix . 'faqdata_group', |
| 249 | $prefix . 'faqdata_revisions', |
| 250 | $prefix . 'faqdata_tags', |
| 251 | $prefix . 'faqdata_user', |
| 252 | $prefix . 'faqforms', |
| 253 | $prefix . 'faqglossary', |
| 254 | $prefix . 'faqgroup', |
| 255 | $prefix . 'faqgroup_right', |
| 256 | $prefix . 'faqinstances', |
| 257 | $prefix . 'faqinstances_config', |
| 258 | $prefix . 'faqnews', |
| 259 | $prefix . 'faqquestions', |
| 260 | $prefix . 'faqright', |
| 261 | $prefix . 'faqsearches', |
| 262 | $prefix . 'faqseo', |
| 263 | $prefix . 'faqsessions', |
| 264 | $prefix . 'faqstopwords', |
| 265 | $prefix . 'faqtags', |
| 266 | $prefix . 'faquser', |
| 267 | $prefix . 'faquserdata', |
| 268 | $prefix . 'faquserlogin', |
| 269 | $prefix . 'faquser_group', |
| 270 | $prefix . 'faquser_right', |
| 271 | $prefix . 'faqvisits', |
| 272 | $prefix . 'faqvoting', |
| 273 | ]; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Returns just one row. |
| 278 | */ |
| 279 | /** |
| 280 | * @throws Exception |
| 281 | */ |
| 282 | private function getOne(string $query): string |
| 283 | { |
| 284 | $statement = $this->pdo()->prepare($query); |
| 285 | if ($statement === false) { |
| 286 | throw new Exception('Cannot prepare query: ' . $query); |
| 287 | } |
| 288 | |
| 289 | $statement->execute(); |
| 290 | |
| 291 | $row = $statement->fetch(PDO::FETCH_NUM); |
| 292 | |
| 293 | return is_array($row) ? (string) ($row[0] ?? '') : ''; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * This function is a replacement for MySQL's auto-increment so that |
| 298 | * we don't need it anymore. |
| 299 | * |
| 300 | * @param string $table The name of the table |
| 301 | * @param string $column The name of the ID column |
| 302 | * @throws Exception |
| 303 | */ |
| 304 | public function nextId(string $table, string $column): int |
| 305 | { |
| 306 | $query = sprintf('SELECT MAX(%s) AS current_id FROM %s', $column, $table); |
| 307 | |
| 308 | $statement = $this->pdo()->prepare($query); |
| 309 | if ($statement === false) { |
| 310 | throw new Exception('Cannot prepare query: ' . $query); |
| 311 | } |
| 312 | |
| 313 | $statement->execute(); |
| 314 | |
| 315 | $current = $statement->fetch(PDO::FETCH_NUM); |
| 316 | |
| 317 | return is_array($current) ? (int) ($current[0] ?? 0) + 1 : 1; |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * This function sends a query to the database. |
| 322 | * |
| 323 | * @return PDOStatement|false $result |
| 324 | * @throws Exception |
| 325 | */ |
| 326 | public function query(string $query, int $offset = 0, int $rowcount = 0): mixed |
| 327 | { |
| 328 | $this->sqlLog .= $query; |
| 329 | |
| 330 | if (0 < $rowcount) { |
| 331 | $query .= sprintf(' OFFSET %d ROWS FETCH NEXT %d ROWS ONLY', $offset, $rowcount); |
| 332 | } |
| 333 | |
| 334 | try { |
| 335 | $result = $this->pdo()->query($query); |
| 336 | } catch (PDOException $pdoException) { |
| 337 | throw new Exception($pdoException->getMessage()); |
| 338 | } |
| 339 | |
| 340 | if (false === $result) { |
| 341 | $this->sqlLog .= (string) $this->pdo()->errorCode() . ': ' . $this->error(); |
| 342 | } |
| 343 | |
| 344 | $this->lastStatement = $result instanceof PDOStatement ? $result : null; |
| 345 | |
| 346 | return $result; |
| 347 | } |
| 348 | |
| 349 | /** |
| 350 | * Sends a parameterized query; `?` placeholders are bound by PDO. |
| 351 | * |
| 352 | * @param array<int, string|int|float|null> $params |
| 353 | * @throws Exception |
| 354 | */ |
| 355 | public function queryPrepared(string $query, array $params): PDOStatement |
| 356 | { |
| 357 | $this->sqlLog .= $query; |
| 358 | |
| 359 | if (!$this->pdo instanceof PDO) { |
| 360 | throw new Exception('No database connection available for query: ' . $query); |
| 361 | } |
| 362 | |
| 363 | try { |
| 364 | $statement = $this->pdo()->prepare($query); |
| 365 | if ($statement === false) { |
| 366 | throw new Exception('Cannot prepare query: ' . $query); |
| 367 | } |
| 368 | |
| 369 | $statement->execute($params); |
| 370 | } catch (PDOException $pdoException) { |
| 371 | throw new Exception($pdoException->getMessage() . ' in query: ' . $query); |
| 372 | } |
| 373 | |
| 374 | $this->lastStatement = $statement; |
| 375 | |
| 376 | return $statement; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Returns the number of rows affected by the last INSERT, UPDATE, or DELETE query. |
| 381 | */ |
| 382 | public function affectedRows(): int |
| 383 | { |
| 384 | return $this->lastStatement?->rowCount() ?? 0; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * Prepares a statement for execution and returns a statement object. |
| 389 | * |
| 390 | * @param string $query The SQL query |
| 391 | * @param array $options The driver options |
| 392 | */ |
| 393 | public function prepare(string $query, array $options = []): PDOStatement|false |
| 394 | { |
| 395 | return $this->pdo()->prepare($query, $options); |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Executes a prepared statement. |
| 400 | * |
| 401 | * @param PDOStatement $pdoStatement The prepared statement |
| 402 | * @param array $params The parameters |
| 403 | */ |
| 404 | public function execute(PDOStatement $pdoStatement, array $params = []): bool |
| 405 | { |
| 406 | return $pdoStatement->execute($params); |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Returns the client version string. |
| 411 | */ |
| 412 | public function clientVersion(): string |
| 413 | { |
| 414 | // pdo_sqlsrv reports the client version as an array of components |
| 415 | $clientVersion = $this->pdo()->getAttribute(PDO::ATTR_CLIENT_VERSION); |
| 416 | if (is_array($clientVersion)) { |
| 417 | return implode(' ', array_map(static fn(mixed $part): string => (string) $part, $clientVersion)); |
| 418 | } |
| 419 | |
| 420 | return (string) $clientVersion; |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * Returns the server version string. |
| 425 | */ |
| 426 | public function serverVersion(): string |
| 427 | { |
| 428 | return (string) $this->pdo()->getAttribute(PDO::ATTR_SERVER_VERSION); |
| 429 | } |
| 430 | |
| 431 | /** |
| 432 | * Closes the connection to the database. |
| 433 | */ |
| 434 | public function close(): void |
| 435 | { |
| 436 | $this->pdo = null; |
| 437 | } |
| 438 | |
| 439 | public function __destruct() |
| 440 | { |
| 441 | $this->close(); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Returns the ID of the last inserted row. |
| 446 | */ |
| 447 | public function lastInsertId(): int|string |
| 448 | { |
| 449 | return (int) $this->pdo()->lastInsertId(); |
| 450 | } |
| 451 | |
| 452 | public function now(): string |
| 453 | { |
| 454 | return 'CURRENT_TIMESTAMP'; |
| 455 | } |
| 456 | } |