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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * The phpMyFAQ\Database\Sqlite3 class provides methods and functions for a SQLite v3 database. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2012-2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2012-03-02 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Database; |
| 21 | |
| 22 | use phpMyFAQ\Core\Exception; |
| 23 | use SensitiveParameter; |
| 24 | |
| 25 | /** |
| 26 | * Class Sqlite3 |
| 27 | * |
| 28 | * @package phpMyFAQ\Database |
| 29 | * @deprecated Use PDO instead. Will be removed in the v5.0 release. |
| 30 | */ |
| 31 | class Sqlite3 implements DatabaseDriver |
| 32 | { |
| 33 | /** |
| 34 | * @var string[] Tables. |
| 35 | */ |
| 36 | public array $tableNames = []; |
| 37 | |
| 38 | /** |
| 39 | * The connection object. |
| 40 | */ |
| 41 | private ?\SQLite3 $conn = null; |
| 42 | |
| 43 | /** |
| 44 | * Returns the active connection or fails loudly when connect() has not |
| 45 | * been called yet or the connection was already closed. |
| 46 | */ |
| 47 | private function connection(): \SQLite3 |
| 48 | { |
| 49 | return $this->conn ?? throw new \RuntimeException('There is no open database connection.'); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * The query log string. |
| 54 | * @see query() |
| 55 | */ |
| 56 | private string $sqlLog = ''; |
| 57 | |
| 58 | private const string ERROR_MESSAGE = |
| 59 | "Do not call numRows() after you've fetched one or more result records, because " . ( |
| 60 | Sqlite3::class . '::numRows() has to reset the results at its end.' |
| 61 | ); |
| 62 | |
| 63 | /** |
| 64 | * Connects to the database. |
| 65 | */ |
| 66 | public function connect( |
| 67 | string $host, |
| 68 | string $user, |
| 69 | #[SensitiveParameter] |
| 70 | string $password, |
| 71 | string $database = '', |
| 72 | ?int $port = null, |
| 73 | ): ?bool { |
| 74 | $connection = new \SQLite3($host); |
| 75 | $connection->enableExceptions(true); |
| 76 | $this->conn = $connection; |
| 77 | |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Escapes a string for use in a query. |
| 83 | */ |
| 84 | public function escape(string $string): string |
| 85 | { |
| 86 | return \SQLite3::escapeString($string); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Fetch a result row as an object. |
| 91 | * |
| 92 | * @return \stdClass|null NULL if there are no more results |
| 93 | */ |
| 94 | public function fetchObject(mixed $result): ?object |
| 95 | { |
| 96 | if (!$result instanceof \SQLite3Result) { |
| 97 | return null; |
| 98 | } |
| 99 | |
| 100 | $return = $result->fetchArray(SQLITE3_ASSOC); |
| 101 | |
| 102 | return is_array($return) ? (object) $return : null; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Fetch a result row as an array. |
| 107 | */ |
| 108 | public function fetchArray(mixed $result): ?array |
| 109 | { |
| 110 | if (!$result instanceof \SQLite3Result) { |
| 111 | return []; |
| 112 | } |
| 113 | |
| 114 | $fetchedData = $result->fetchArray(SQLITE3_ASSOC); |
| 115 | |
| 116 | return is_array($fetchedData) ? $fetchedData : []; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Fetch a result row. |
| 121 | */ |
| 122 | public function fetchRow(mixed $result): mixed |
| 123 | { |
| 124 | return $result instanceof \SQLite3Result ? $result->fetchArray(SQLITE3_ASSOC) : false; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Fetches a complete result as an object. |
| 129 | * |
| 130 | * @param mixed $result Resultset |
| 131 | * @return list<\stdClass>|null |
| 132 | * @throws Exception |
| 133 | */ |
| 134 | public function fetchAll(mixed $result): ?array |
| 135 | { |
| 136 | $ret = []; |
| 137 | if (!$result instanceof \SQLite3Result) { |
| 138 | throw new Exception('Error while fetching result: ' . $this->error()); |
| 139 | } |
| 140 | |
| 141 | while (true) { |
| 142 | $row = $result->fetchArray(SQLITE3_ASSOC); |
| 143 | if (!is_array($row)) { |
| 144 | break; |
| 145 | } |
| 146 | |
| 147 | $ret[] = (object) $row; |
| 148 | } |
| 149 | |
| 150 | return $ret; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Returns the error string. |
| 155 | */ |
| 156 | public function error(): string |
| 157 | { |
| 158 | if (!$this->conn instanceof \SQLite3 || 0 === $this->conn->lastErrorCode()) { |
| 159 | return ''; |
| 160 | } |
| 161 | |
| 162 | return $this->conn->lastErrorMsg(); |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Logs the queries. |
| 167 | */ |
| 168 | public function log(): string |
| 169 | { |
| 170 | return $this->sqlLog; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * This function returns the table status. |
| 175 | * |
| 176 | * @param string $prefix Table prefix |
| 177 | * @throws Exception |
| 178 | */ |
| 179 | public function getTableStatus(string $prefix = ''): array |
| 180 | { |
| 181 | $arr = []; |
| 182 | |
| 183 | // Use sqlite_schema (preferred) instead of sqlite_master to avoid linter complaints and for newer SQLite |
| 184 | $result = $this->query("SELECT name FROM sqlite_schema WHERE type='table' ORDER BY name"); |
| 185 | while (true) { |
| 186 | $row = $this->fetchAssoc($result); |
| 187 | if ($row === []) { |
| 188 | break; |
| 189 | } |
| 190 | |
| 191 | $tableName = (string) $row['name']; |
| 192 | $numResult = $this->query(sprintf('SELECT * FROM %s', $tableName)); |
| 193 | $arr[$tableName] = $this->numRows($numResult); |
| 194 | } |
| 195 | |
| 196 | return $arr; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * This function sends a query to the database. |
| 201 | * |
| 202 | * @return \SQLite3Result|bool $result |
| 203 | */ |
| 204 | public function query(string $query, int $offset = 0, int $rowcount = 0): \SQLite3Result|bool |
| 205 | { |
| 206 | $this->sqlLog .= $query; |
| 207 | |
| 208 | if (0 < $rowcount) { |
| 209 | $query .= sprintf(' LIMIT %d,%d', $offset, $rowcount); |
| 210 | } |
| 211 | |
| 212 | try { |
| 213 | $result = $this->connection()->query($query); |
| 214 | } catch (\SQLite3Exception) { |
| 215 | $result = false; |
| 216 | } |
| 217 | |
| 218 | if (!$result) { |
| 219 | $this->sqlLog .= $this->error(); |
| 220 | } |
| 221 | |
| 222 | return $result; |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Sends a parameterized query; `?` placeholders are bound by SQLite3. |
| 227 | * |
| 228 | * @param array<int, string|int|float|null> $params |
| 229 | */ |
| 230 | public function queryPrepared(string $query, array $params): \SQLite3Result|bool |
| 231 | { |
| 232 | $this->sqlLog .= $query; |
| 233 | |
| 234 | if (!$this->conn instanceof \SQLite3) { |
| 235 | return false; |
| 236 | } |
| 237 | |
| 238 | try { |
| 239 | $statement = $this->conn->prepare($query); |
| 240 | } catch (\SQLite3Exception) { |
| 241 | $statement = false; |
| 242 | } |
| 243 | |
| 244 | if (!$statement instanceof \SQLite3Stmt) { |
| 245 | $this->sqlLog .= $this->error(); |
| 246 | |
| 247 | return false; |
| 248 | } |
| 249 | |
| 250 | $position = 1; |
| 251 | foreach ($params as $param) { |
| 252 | $statement->bindValue($position, $param); |
| 253 | ++$position; |
| 254 | } |
| 255 | |
| 256 | try { |
| 257 | $result = $statement->execute(); |
| 258 | } catch (\SQLite3Exception) { |
| 259 | $result = false; |
| 260 | } |
| 261 | |
| 262 | if ($result === false) { |
| 263 | $this->sqlLog .= $this->error(); |
| 264 | } |
| 265 | |
| 266 | return $result; |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Fetch a result row as an associate array. |
| 271 | */ |
| 272 | public function fetchAssoc(mixed $result): array |
| 273 | { |
| 274 | if (!$result instanceof \SQLite3Result) { |
| 275 | return []; |
| 276 | } |
| 277 | |
| 278 | $fetchedData = $result->fetchArray(SQLITE3_ASSOC); |
| 279 | |
| 280 | return is_array($fetchedData) ? $fetchedData : []; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Number of rows in a result. |
| 285 | * @throws Exception |
| 286 | */ |
| 287 | public function numRows(mixed $result): int |
| 288 | { |
| 289 | if (!$result instanceof \SQLite3Result) { |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | if (property_exists($result, 'fetchedByPMF') && (bool) $result->fetchedByPMF) { |
| 294 | throw new Exception(self::ERROR_MESSAGE); |
| 295 | } |
| 296 | |
| 297 | $numberOfRows = 0; |
| 298 | while ($result->fetchArray(SQLITE3_NUM)) { |
| 299 | ++$numberOfRows; |
| 300 | } |
| 301 | |
| 302 | $result->reset(); |
| 303 | |
| 304 | return $numberOfRows; |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Returns an array with all table names. |
| 309 | * |
| 310 | * @todo Have to be refactored because of https://github.com/thorsten/phpMyFAQ/issues/965 |
| 311 | * |
| 312 | * @param string $prefix Table prefix |
| 313 | * |
| 314 | * @return string[] |
| 315 | */ |
| 316 | public function getTableNames(string $prefix = ''): array |
| 317 | { |
| 318 | return $this->tableNames = [ |
| 319 | $prefix . 'faqadminlog', |
| 320 | $prefix . 'faqattachment', |
| 321 | $prefix . 'faqattachment_file', |
| 322 | $prefix . 'faqbackup', |
| 323 | $prefix . 'faqbookmarks', |
| 324 | $prefix . 'faqcaptcha', |
| 325 | $prefix . 'faqcategories', |
| 326 | $prefix . 'faqcategoryrelations', |
| 327 | $prefix . 'faqcategory_group', |
| 328 | $prefix . 'faqcategory_news', |
| 329 | $prefix . 'faqcategory_order', |
| 330 | $prefix . 'faqcategory_user', |
| 331 | $prefix . 'faqchanges', |
| 332 | $prefix . 'faqchat_messages', |
| 333 | $prefix . 'faqcomments', |
| 334 | $prefix . 'faqconfig', |
| 335 | $prefix . 'faqcustompages', |
| 336 | $prefix . 'faqdata', |
| 337 | $prefix . 'faqdata_group', |
| 338 | $prefix . 'faqdata_revisions', |
| 339 | $prefix . 'faqdata_tags', |
| 340 | $prefix . 'faqdata_user', |
| 341 | $prefix . 'faqforms', |
| 342 | $prefix . 'faqglossary', |
| 343 | $prefix . 'faqgroup', |
| 344 | $prefix . 'faqgroup_right', |
| 345 | $prefix . 'faqinstances', |
| 346 | $prefix . 'faqinstances_config', |
| 347 | $prefix . 'faqnews', |
| 348 | $prefix . 'faqquestions', |
| 349 | $prefix . 'faqright', |
| 350 | $prefix . 'faqsearches', |
| 351 | $prefix . 'faqseo', |
| 352 | $prefix . 'faqsessions', |
| 353 | $prefix . 'faqstopwords', |
| 354 | $prefix . 'faqtags', |
| 355 | $prefix . 'faquser', |
| 356 | $prefix . 'faquserdata', |
| 357 | $prefix . 'faquserlogin', |
| 358 | $prefix . 'faquser_group', |
| 359 | $prefix . 'faquser_right', |
| 360 | $prefix . 'faqvisits', |
| 361 | $prefix . 'faqvoting', |
| 362 | ]; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Returns the next ID of a table. |
| 367 | * |
| 368 | * @param string $table the name of the table |
| 369 | * @param string $column the name of the ID column |
| 370 | */ |
| 371 | public function nextId(string $table, string $column): int |
| 372 | { |
| 373 | $result = (int) $this->connection()->querySingle(sprintf( |
| 374 | 'SELECT max(%s) AS current_id FROM %s', |
| 375 | $column, |
| 376 | $table, |
| 377 | )); |
| 378 | |
| 379 | return $result + 1; |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Returns the number of rows affected by the last INSERT, UPDATE, or DELETE query. |
| 384 | */ |
| 385 | public function affectedRows(): int |
| 386 | { |
| 387 | return $this->connection()->changes(); |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Returns the library version string. |
| 392 | */ |
| 393 | public function serverVersion(): string |
| 394 | { |
| 395 | return $this->clientVersion(); |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Returns the library version string. |
| 400 | */ |
| 401 | public function clientVersion(): string |
| 402 | { |
| 403 | return (string) \SQLite3::version()['versionString']; |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Closes the connection to the database. |
| 408 | */ |
| 409 | public function close(): bool |
| 410 | { |
| 411 | if (!$this->conn instanceof \SQLite3) { |
| 412 | return true; |
| 413 | } |
| 414 | |
| 415 | $closed = $this->conn->close(); |
| 416 | $this->conn = null; |
| 417 | |
| 418 | return $closed; |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * Returns the ID of the last inserted row. |
| 423 | */ |
| 424 | public function lastInsertId(): int|string |
| 425 | { |
| 426 | return $this->connection()->lastInsertRowID(); |
| 427 | } |
| 428 | |
| 429 | public function now(): string |
| 430 | { |
| 431 | return "DATETIME('now', 'localtime')"; |
| 432 | } |
| 433 | } |