Database.php
549 lines
| 1 | <?php |
| 2 | |
| 3 | namespace Transferito\Models\Transfer; |
| 4 | |
| 5 | use mysqli; |
| 6 | use mysqli_driver; |
| 7 | use mysqli_sql_exception; |
| 8 | |
| 9 | if (!defined('ABSPATH')) exit; |
| 10 | |
| 11 | class Database { |
| 12 | |
| 13 | private $collationTypes = array( |
| 14 | 'column' => 'column', |
| 15 | 'table' => 'table' |
| 16 | ); |
| 17 | |
| 18 | private function removeCollation($createTableSQL, $type) |
| 19 | { |
| 20 | if (!in_array($type, array_values($this->collationTypes))) { |
| 21 | return $createTableSQL; |
| 22 | } |
| 23 | |
| 24 | $regExpPatterns = array( |
| 25 | 'column' => '/( COLLATE)\s(.*?)(?=\s|,)/', |
| 26 | 'table' => '/( COLLATE)=(.*?)$/' |
| 27 | ); |
| 28 | |
| 29 | $updatedSQL = preg_replace($regExpPatterns[$type], '', $createTableSQL); |
| 30 | return $updatedSQL; |
| 31 | } |
| 32 | |
| 33 | public function moveDatabaseFiles() |
| 34 | { |
| 35 | /** |
| 36 | * Paths |
| 37 | */ |
| 38 | $databaseDirectory = TRANSFERITO_UPLOAD_PATH . DIRECTORY_SEPARATOR . 'db_import'; |
| 39 | $newDatabaseDirectory = TRANSFERITO_ABSPATH . 'transferito_import'; |
| 40 | |
| 41 | /** |
| 42 | * Command |
| 43 | */ |
| 44 | $moveCommand = "mv {$databaseDirectory} {$newDatabaseDirectory}"; |
| 45 | |
| 46 | /** |
| 47 | * Save the PID |
| 48 | */ |
| 49 | $pid = exec("{$moveCommand} > /dev/null & echo $!;"); |
| 50 | |
| 51 | /** |
| 52 | * Save the PID |
| 53 | */ |
| 54 | set_transient('transferito_database_relocation_pid', $pid); |
| 55 | } |
| 56 | |
| 57 | public function prepareTableMap() |
| 58 | { |
| 59 | $driver = new mysqli_driver(); |
| 60 | $driver->report_mode = MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT; |
| 61 | |
| 62 | try { |
| 63 | $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); |
| 64 | $mysqli->select_db(DB_NAME); |
| 65 | $queryTables = $mysqli->query('SHOW TABLES'); |
| 66 | $tableMap = []; |
| 67 | |
| 68 | /** |
| 69 | * Loop through the tables that have been found |
| 70 | */ |
| 71 | while($row = $queryTables->fetch_row()) { |
| 72 | $foundTables[] = $row[0]; |
| 73 | $table = $row[0]; |
| 74 | |
| 75 | /** |
| 76 | * Get the table status for the looping table |
| 77 | */ |
| 78 | $tableStatus = $mysqli |
| 79 | ->query("SHOW TABLE STATUS WHERE name='{$table}'") |
| 80 | ->fetch_assoc(); |
| 81 | |
| 82 | /** |
| 83 | * Get the table row count for the looping table |
| 84 | */ |
| 85 | $tableRowCount = $mysqli |
| 86 | ->query("SELECT COUNT(*) FROM {$table}") |
| 87 | ->fetch_row(); |
| 88 | |
| 89 | /** |
| 90 | * Map the table with the row amount and the row length |
| 91 | */ |
| 92 | $tableMap[] = [ |
| 93 | 'name' => $table, |
| 94 | 'rowAmount' => $tableRowCount[0], |
| 95 | 'rowLength' => $tableStatus['Avg_row_length'], |
| 96 | 'tableSize' => $tableStatus['Data_length'] |
| 97 | ]; |
| 98 | } |
| 99 | |
| 100 | return $tableMap; |
| 101 | } catch (mysqli_sql_exception $e) { |
| 102 | return false; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | public function saveDatabaseExportPart($fileIndex, $content) |
| 107 | { |
| 108 | $directory = TRANSFERITO_UPLOAD_PATH . DIRECTORY_SEPARATOR . 'db_import'; |
| 109 | $filename = $directory . DIRECTORY_SEPARATOR . 'transferito_db_import_' . $fileIndex . '.sql'; |
| 110 | |
| 111 | /** |
| 112 | * Check that to the directory has been created |
| 113 | * If it hasn't then create it |
| 114 | */ |
| 115 | if (!file_exists($directory)) { |
| 116 | wp_mkdir_p($directory); |
| 117 | } |
| 118 | |
| 119 | return file_put_contents($filename, $content); |
| 120 | } |
| 121 | |
| 122 | public function chunkedDBExport($fileIndex = 1, $startingRowIndex = 0, $startingTableIndex = 0) |
| 123 | { |
| 124 | $driver = new mysqli_driver(); |
| 125 | $driver->report_mode = MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT; |
| 126 | |
| 127 | try { |
| 128 | $cycleCount = 0; |
| 129 | $byteCount = 0; |
| 130 | $initialOffset = $startingRowIndex; |
| 131 | $recordCount = 0; |
| 132 | $initialOffsetBeenSet = false; |
| 133 | $tableMap = get_transient('transferito_database_table_map'); |
| 134 | $transferDetail = get_transient('transferito_transfer_detail'); |
| 135 | |
| 136 | $oldURL = $transferDetail['fromUrl']; |
| 137 | $newURL = $transferDetail['newUrl']; |
| 138 | |
| 139 | $parsedOldURL = wp_parse_url($oldURL); |
| 140 | $parsedNewURL = wp_parse_url($newURL); |
| 141 | |
| 142 | $escapedOldHost = '/' . $parsedOldURL['host']; |
| 143 | $escapedNewHost = '/' . $parsedNewURL['host']; |
| 144 | |
| 145 | $escapedOldHostEncoded = '%2F' . $parsedOldURL['host']; |
| 146 | $escapedNewHostEncoded = '%2F' . $parsedNewURL['host']; |
| 147 | |
| 148 | $tableMapAmount = count($tableMap); |
| 149 | |
| 150 | $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); |
| 151 | $mysqli->select_db(DB_NAME); |
| 152 | |
| 153 | $databaseName = DB_NAME; |
| 154 | $charsetQuery = $mysqli->query( |
| 155 | "SELECT `DEFAULT_CHARACTER_SET_NAME` FROM information_schema.SCHEMATA WHERE schema_name ='{$databaseName}'" |
| 156 | )->fetch_row(); |
| 157 | |
| 158 | /** |
| 159 | * Check to see if the charset is available |
| 160 | */ |
| 161 | if (!isset($charsetQuery[0])) { |
| 162 | throw new \Exception('We can not get your charset.'); |
| 163 | } |
| 164 | |
| 165 | $charset = $charsetQuery[0]; |
| 166 | |
| 167 | /** |
| 168 | * @todo Clean up and remove properly |
| 169 | */ |
| 170 | set_transient('transferito_database_charset_info', [ |
| 171 | 'actualCharset' => $charset, |
| 172 | 'configCharset' => DB_CHARSET, |
| 173 | ]); |
| 174 | |
| 175 | $settings = get_option('transferito_settings_option'); |
| 176 | $useDefaultCollation = isset($settings['transferito_use_default_collation']) |
| 177 | ? $settings['transferito_use_default_collation'] |
| 178 | : false; |
| 179 | |
| 180 | $sqlContent = "/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;\n/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;\n/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;\n/*!40101 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS */;\n/*!40101 SET SESSION sql_mode = 'ALLOW_INVALID_DATES' */;\n/*!40101 SET FOREIGN_KEY_CHECKS=0 */;\n/*!40101 SET NAMES utf8mb4 */;\n\n"; |
| 181 | |
| 182 | $exportResult = []; |
| 183 | |
| 184 | for ($tableIndex = $startingTableIndex; $tableIndex < $tableMapAmount;) { |
| 185 | /** |
| 186 | * If the row is at 0 |
| 187 | * Then print the create table SQL with the drop table statement |
| 188 | */ |
| 189 | if ($startingRowIndex === 0) { |
| 190 | $createTable = $mysqli->query('SHOW CREATE TABLE ' . $tableMap[$tableIndex]['name'])->fetch_row(); |
| 191 | $createTableSQL = $createTable[1]; |
| 192 | |
| 193 | if ($useDefaultCollation) { |
| 194 | $columnUpdatedSQL = $this->removeCollation($createTableSQL, 'column'); |
| 195 | $tableUpdatedSQL = $this->removeCollation($columnUpdatedSQL, 'table'); |
| 196 | $sqlContent .= "\n\nDROP TABLE IF EXISTS `{$tableMap[$tableIndex]['name']}`;\n" . $tableUpdatedSQL . ";\n\n"; |
| 197 | } else { |
| 198 | $sqlContent .= "\n\nDROP TABLE IF EXISTS `{$tableMap[$tableIndex]['name']}`;\n" . $createTableSQL . ";\n\n"; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Query to pull the row data from this table |
| 204 | */ |
| 205 | if ($startingRowIndex === 0 || $initialOffset === 0) { |
| 206 | $command = "SELECT * FROM {$tableMap[$tableIndex]['name']} LIMIT 10000"; |
| 207 | } else { |
| 208 | $command = "SELECT * FROM {$tableMap[$tableIndex]['name']} LIMIT 10000 OFFSET {$initialOffset}"; |
| 209 | } |
| 210 | |
| 211 | $rowData = $mysqli->query($command); |
| 212 | |
| 213 | /** |
| 214 | * Loop through the rows based on the starting index |
| 215 | */ |
| 216 | for($rowIndex = 0; $rowIndex < $rowData->num_rows;) { |
| 217 | $rowData->data_seek($rowIndex); |
| 218 | $row = $rowData->fetch_row(); |
| 219 | |
| 220 | /** |
| 221 | * Correct byte allocation |
| 222 | */ |
| 223 | $byteCount = $byteCount + strlen(serialize($row)); |
| 224 | |
| 225 | /** |
| 226 | * Add the insert statement on cycle count or first row |
| 227 | */ |
| 228 | if ($rowIndex == 0 || $cycleCount % 100 == 0 || $cycleCount == 0) { |
| 229 | $sqlContent .= "\nINSERT IGNORE INTO " . $tableMap[$tableIndex]['name']. " VALUES "; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Open the bracket for the row value |
| 234 | */ |
| 235 | $sqlContent .= "\n("; |
| 236 | |
| 237 | /** |
| 238 | * Loop through the columns for the row |
| 239 | */ |
| 240 | for ($fieldIndex = 0; $fieldIndex < $rowData->field_count; $fieldIndex++) { |
| 241 | |
| 242 | |
| 243 | if (isset($row[$fieldIndex]) && $row[$fieldIndex]) { |
| 244 | /** |
| 245 | * Replace the URLs |
| 246 | */ |
| 247 | if (strpos($row[$fieldIndex], $oldURL) !== false) { |
| 248 | $row[$fieldIndex] = str_replace($oldURL, $newURL, $row[$fieldIndex]); |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Replace the escaped domain |
| 253 | */ |
| 254 | if (strpos($row[$fieldIndex], $escapedOldHost) !== false) { |
| 255 | $row[$fieldIndex] = str_replace($escapedOldHost, $escapedNewHost, $row[$fieldIndex]); |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * Replace the escaped url encoded domain |
| 260 | */ |
| 261 | if (strpos($row[$fieldIndex], $escapedOldHostEncoded) !== false) { |
| 262 | $row[$fieldIndex] = str_replace($escapedOldHostEncoded, $escapedNewHostEncoded, $row[$fieldIndex]); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Fix broken serialized data |
| 267 | */ |
| 268 | if (substr($row[$fieldIndex], 0, 2) === 'a:') { |
| 269 | if (!@unserialize($row[$fieldIndex])) { |
| 270 | $fixedSerialization = preg_replace_callback( |
| 271 | '/s:([0-9]+):\"(.*?)\";/', |
| 272 | function ($matches) { return "s:".strlen($matches[2]).':"'.$matches[2].'";'; }, |
| 273 | $row[$fieldIndex] |
| 274 | ); |
| 275 | $row[$fieldIndex] = $fixedSerialization; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * Add slashes to the field value |
| 281 | */ |
| 282 | $row[$fieldIndex] = $mysqli->real_escape_string($row[$fieldIndex]); |
| 283 | |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * Check the value exists for the column value |
| 288 | */ |
| 289 | if (isset($row[$fieldIndex])) { |
| 290 | $sqlContent .= "'" . $row[$fieldIndex] . "'" ; |
| 291 | } else { |
| 292 | $sqlContent .= "''"; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Adda a comma to every column for the value statement except the penultimate |
| 297 | */ |
| 298 | if ($fieldIndex < ($rowData->field_count - 1)) { |
| 299 | $sqlContent.= ","; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * Close the bracket for the row value |
| 305 | */ |
| 306 | $sqlContent .=")"; |
| 307 | |
| 308 | /** |
| 309 | * Dependent on the cycle or the end of the row value |
| 310 | * Add a comma or end the statement |
| 311 | */ |
| 312 | if ((($cycleCount + 1) %100 == 0 && $cycleCount != 0) || ($rowIndex + 1) == $rowData->num_rows) { |
| 313 | $sqlContent .= ";"; |
| 314 | } else { |
| 315 | $sqlContent .= ","; |
| 316 | } |
| 317 | $cycleCount = $cycleCount + 1; |
| 318 | |
| 319 | /** |
| 320 | * Increment the row index |
| 321 | */ |
| 322 | $rowIndex++; |
| 323 | |
| 324 | /** |
| 325 | * Records Count |
| 326 | */ |
| 327 | $recordCount = $rowIndex; |
| 328 | |
| 329 | /** |
| 330 | * Every 10000 break |
| 331 | */ |
| 332 | if ($rowIndex != 0 && $rowIndex % 10000 == 0) { |
| 333 | /** |
| 334 | * Current row index |
| 335 | */ |
| 336 | $initialOffset = $initialOffset + $recordCount; |
| 337 | $initialOffsetBeenSet = true; |
| 338 | $command = "SELECT * FROM {$tableMap[$tableIndex]['name']} LIMIT 10000 OFFSET {$initialOffset}"; |
| 339 | $rowData = $mysqli->query($command); |
| 340 | $rowIndex = 0; |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * If the byte count is greater than or equal to LIMIT |
| 345 | */ |
| 346 | if ($byteCount >= TRANSFERITO_DB_LIMIT) { |
| 347 | |
| 348 | /** |
| 349 | * If initial offset has already been set |
| 350 | * Then do not assign it again |
| 351 | */ |
| 352 | if (!$initialOffsetBeenSet) { |
| 353 | $initialOffset = $initialOffset + $recordCount; |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * Check the last character in the import |
| 358 | */ |
| 359 | if (substr($sqlContent, -1) === ',') { |
| 360 | $sqlContent = substr($sqlContent, 0, -1); |
| 361 | $sqlContent .= ";"; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Add to the end of every file |
| 366 | */ |
| 367 | $sqlContent .= "\n\n/*!40101 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;"; |
| 368 | |
| 369 | /** |
| 370 | * Save the export file |
| 371 | */ |
| 372 | $this->saveDatabaseExportPart($fileIndex, $sqlContent); |
| 373 | |
| 374 | /** |
| 375 | * Then increment the file index once the file has been saved |
| 376 | */ |
| 377 | $fileIndex++; |
| 378 | |
| 379 | /** |
| 380 | * Set the transient DB Export Progress |
| 381 | */ |
| 382 | set_transient('transferito_db_export_progress', [ |
| 383 | 'currentRowIndex' => $initialOffset, |
| 384 | 'tableIndex' => $tableIndex, |
| 385 | 'fileIndex' => $fileIndex |
| 386 | ]); |
| 387 | |
| 388 | /** |
| 389 | * Set the export flag to true |
| 390 | * Which will notify the API of completion |
| 391 | */ |
| 392 | $exportResult = [ |
| 393 | 'completed' => false, |
| 394 | 'currentRowIndex' => $initialOffset, |
| 395 | 'tableIndex' => $tableIndex, |
| 396 | 'fileIndex' => $fileIndex, |
| 397 | ]; |
| 398 | |
| 399 | break; |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * If we've reached the byte count |
| 405 | * Go no further than this |
| 406 | */ |
| 407 | if ($byteCount >= TRANSFERITO_DB_LIMIT) { |
| 408 | break; |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * Increment the table index |
| 413 | */ |
| 414 | $tableIndex++; |
| 415 | |
| 416 | /** |
| 417 | * Reset the starting row index |
| 418 | */ |
| 419 | $startingRowIndex = 0; |
| 420 | |
| 421 | /** |
| 422 | * Reset the offset |
| 423 | */ |
| 424 | $initialOffset = 0; |
| 425 | |
| 426 | /** |
| 427 | * Assign a falsey value to the been set flag to reset it |
| 428 | */ |
| 429 | $initialOffsetBeenSet = false; |
| 430 | |
| 431 | /** |
| 432 | * When the DB export has finished |
| 433 | */ |
| 434 | if ($tableIndex === $tableMapAmount) { |
| 435 | /** |
| 436 | * Save the export file |
| 437 | */ |
| 438 | $this->saveDatabaseExportPart($fileIndex, $sqlContent); |
| 439 | |
| 440 | /** |
| 441 | * Set the export flag to true |
| 442 | * Which will notify the API of completion |
| 443 | */ |
| 444 | $exportResult = [ 'completed' => true ]; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | return $exportResult; |
| 449 | } catch(mysqli_sql_exception $e) { |
| 450 | return false; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | public function createFileList() |
| 455 | { |
| 456 | try { |
| 457 | $directory = TRANSFERITO_UPLOAD_PATH . DIRECTORY_SEPARATOR . 'db_import'; |
| 458 | $fileIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($directory), \RecursiveIteratorIterator::CHILD_FIRST); |
| 459 | $files = array(); |
| 460 | $byteCount = 0; |
| 461 | $fileSuffix = 1; |
| 462 | |
| 463 | /** |
| 464 | * Create the directory to house the json files |
| 465 | */ |
| 466 | $dbExportDirectory = $directory . DIRECTORY_SEPARATOR . 'json'; |
| 467 | wp_mkdir_p($dbExportDirectory); |
| 468 | |
| 469 | /** |
| 470 | * Check if the zip archive should be created |
| 471 | */ |
| 472 | $isZipArchive = useZipArchive(); |
| 473 | |
| 474 | /** |
| 475 | * Loop through the files |
| 476 | */ |
| 477 | foreach ($fileIterator as $file) { |
| 478 | if ($file->isDir()){ |
| 479 | continue; |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * Assign name to variable |
| 484 | */ |
| 485 | $filename = $file->getPathname(); |
| 486 | $byteCount = $byteCount + $file->getSize(); |
| 487 | |
| 488 | /** |
| 489 | * Split the path to just get the filename |
| 490 | */ |
| 491 | $updatedName = explode(DIRECTORY_SEPARATOR . 'db_import' . DIRECTORY_SEPARATOR, $filename); |
| 492 | |
| 493 | /** |
| 494 | * Check that we're only checking SQL files |
| 495 | */ |
| 496 | if (strpos($updatedName[1], '.sql') !== false) { |
| 497 | /** |
| 498 | * If the byte count is greater than the archive limit - split the file |
| 499 | */ |
| 500 | if ($byteCount >= TRANSFERITO_DB_LIMIT) { |
| 501 | file_put_contents($dbExportDirectory . DIRECTORY_SEPARATOR . 'file_list_' . $fileSuffix . '.json', json_encode($files)); |
| 502 | |
| 503 | $byteCount = 0; |
| 504 | $fileSuffix++; |
| 505 | |
| 506 | /** |
| 507 | * Destroy the file |
| 508 | */ |
| 509 | unset($files); |
| 510 | $files = []; |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * Create array based paths |
| 515 | */ |
| 516 | if ($isZipArchive) { |
| 517 | $files[] = [ |
| 518 | 'originalPath' => $filename, |
| 519 | 'updatedPath' => str_replace("\\", "/", 'transferito_import' . DIRECTORY_SEPARATOR . $updatedName[1]), |
| 520 | ]; |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * Create path based array |
| 525 | */ |
| 526 | if (!$isZipArchive) { |
| 527 | $files['transferito_import' . DIRECTORY_SEPARATOR . $updatedName[1]] = $filename; |
| 528 | } |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | /** |
| 533 | * Create the last file |
| 534 | */ |
| 535 | if (count($files) > 0) { |
| 536 | file_put_contents($dbExportDirectory . DIRECTORY_SEPARATOR . 'file_list_' . $fileSuffix . '.json', json_encode($files)); |
| 537 | } |
| 538 | |
| 539 | return [ |
| 540 | 'created' => true, |
| 541 | 'amount' => $fileSuffix |
| 542 | ]; |
| 543 | |
| 544 | } catch (\Exception $exception) { |
| 545 | return false; |
| 546 | } |
| 547 | } |
| 548 | } |
| 549 |