| 1 |
<?php |
| 2 |
/** |
| 3 |
* Abstract dump file: provides common interface for writing |
| 4 |
* data to dump files. |
| 5 |
* (c) 2create Studio, Bulgaria |
| 6 |
* http://2create.bg/ |
| 7 |
*/ |
| 8 |
abstract class Shuttle_Dump_File { |
| 9 |
/** |
| 10 |
* File Handle |
| 11 |
*/ |
| 12 |
protected $fh; |
| 13 |
|
| 14 |
/** |
| 15 |
* Location of the dump file on the disk |
| 16 |
*/ |
| 17 |
protected $file_location; |
| 18 |
|
| 19 |
abstract function write($string); |
| 20 |
abstract function end(); |
| 21 |
|
| 22 |
static function create($filename) { |
| 23 |
if (self::is_gzip($filename)) { |
| 24 |
return new Shuttle_Dump_File_Gzip($filename); |
| 25 |
} |
| 26 |
return new Shuttle_Dump_File_Plaintext($filename); |
| 27 |
} |
| 28 |
function __construct($file) { |
| 29 |
$this->file_location = $file; |
| 30 |
$this->fh = $this->open(); |
| 31 |
|
| 32 |
if (!$this->fh) { |
| 33 |
throw new Shuttle_Exception("Couldn't create gz file"); |
| 34 |
} |
| 35 |
} |
| 36 |
|
| 37 |
public static function is_gzip($filename) { |
| 38 |
return preg_match('~gz$~i', $filename); |
| 39 |
} |
| 40 |
} |
| 41 |
|
| 42 |
/** |
| 43 |
* Plain text implementation. Uses standard file functions in PHP. |
| 44 |
*/ |
| 45 |
class Shuttle_Dump_File_Plaintext extends Shuttle_Dump_File { |
| 46 |
function open() { |
| 47 |
return fopen($this->file_location, 'w'); |
| 48 |
} |
| 49 |
function write($string) { |
| 50 |
return fwrite($this->fh, $string); |
| 51 |
} |
| 52 |
function end() { |
| 53 |
return fclose($this->fh); |
| 54 |
} |
| 55 |
} |
| 56 |
|
| 57 |
/** |
| 58 |
* Gzip implementation. Uses gz* functions. |
| 59 |
*/ |
| 60 |
class Shuttle_Dump_File_Gzip extends Shuttle_Dump_File { |
| 61 |
function open() { |
| 62 |
return gzopen($this->file_location, 'wb9'); |
| 63 |
} |
| 64 |
function write($string) { |
| 65 |
return gzwrite($this->fh, $string); |
| 66 |
} |
| 67 |
function end() { |
| 68 |
return gzclose($this->fh); |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
/** |
| 73 |
* MySQL insert statement builder. |
| 74 |
*/ |
| 75 |
class Shuttle_Insert_Statement { |
| 76 |
private $rows = array(); |
| 77 |
private $length = 0; |
| 78 |
private $table; |
| 79 |
|
| 80 |
function __construct($table) { |
| 81 |
$this->table = $table; |
| 82 |
} |
| 83 |
|
| 84 |
function reset() { |
| 85 |
$this->rows = array(); |
| 86 |
$this->length = 0; |
| 87 |
} |
| 88 |
|
| 89 |
function add_row($row) { |
| 90 |
$row = '(' . implode(",", $row) . ')'; |
| 91 |
$this->rows[] = $row; |
| 92 |
$this->length += strlen($row); |
| 93 |
} |
| 94 |
|
| 95 |
function get_sql() { |
| 96 |
if (empty($this->rows)) { |
| 97 |
return false; |
| 98 |
} |
| 99 |
|
| 100 |
return 'INSERT INTO `' . $this->table . '` VALUES ' . |
| 101 |
implode(",\n", $this->rows) . '; '; |
| 102 |
} |
| 103 |
|
| 104 |
function get_length() { |
| 105 |
return $this->length; |
| 106 |
} |
| 107 |
} |
| 108 |
|
| 109 |
/** |
| 110 |
* Main facade |
| 111 |
*/ |
| 112 |
abstract class Shuttle_Dumper { |
| 113 |
/** |
| 114 |
* Maximum length of single insert statement |
| 115 |
*/ |
| 116 |
const INSERT_THRESHOLD = 838860; |
| 117 |
|
| 118 |
/** |
| 119 |
* @var Shuttle_DBConn |
| 120 |
*/ |
| 121 |
public $db; |
| 122 |
|
| 123 |
/** |
| 124 |
* @var Shuttle_Dump_File |
| 125 |
*/ |
| 126 |
public $dump_file; |
| 127 |
|
| 128 |
/** |
| 129 |
* End of line style used in the dump |
| 130 |
*/ |
| 131 |
public $eol = "\r\n"; |
| 132 |
|
| 133 |
/** |
| 134 |
* Specificed tables to include |
| 135 |
*/ |
| 136 |
public $include_tables; |
| 137 |
|
| 138 |
/** |
| 139 |
* Specified tables to exclude |
| 140 |
*/ |
| 141 |
public $exclude_tables = array(); |
| 142 |
|
| 143 |
/** |
| 144 |
* Factory method for dumper on current hosts's configuration. |
| 145 |
*/ |
| 146 |
static function create($db_options) { |
| 147 |
$db = Shuttle_DBConn::create($db_options); |
| 148 |
|
| 149 |
$db->connect(); |
| 150 |
|
| 151 |
if (self::has_shell_access() |
| 152 |
&& self::is_shell_command_available('mysqldump') |
| 153 |
&& self::is_shell_command_available('gzip') |
| 154 |
) { |
| 155 |
$dumper = new Shuttle_Dumper_ShellCommand($db); |
| 156 |
} else { |
| 157 |
$dumper = new Shuttle_Dumper_Native($db); |
| 158 |
} |
| 159 |
|
| 160 |
if (isset($db_options['include_tables'])) { |
| 161 |
$dumper->include_tables = $db_options['include_tables']; |
| 162 |
} |
| 163 |
if (isset($db_options['exclude_tables'])) { |
| 164 |
$dumper->exclude_tables = $db_options['exclude_tables']; |
| 165 |
} |
| 166 |
|
| 167 |
return $dumper; |
| 168 |
} |
| 169 |
|
| 170 |
function __construct(Shuttle_DBConn $db) { |
| 171 |
$this->db = $db; |
| 172 |
} |
| 173 |
|
| 174 |
public static function has_shell_access() { |
| 175 |
if (!is_callable('shell_exec')) { |
| 176 |
return false; |
| 177 |
} |
| 178 |
$disabled_functions = ini_get('disable_functions'); |
| 179 |
return stripos($disabled_functions, 'shell_exec') === false; |
| 180 |
} |
| 181 |
|
| 182 |
public static function is_shell_command_available($command) { |
| 183 |
if (preg_match('~win~i', PHP_OS)) { |
| 184 |
/* |
| 185 |
On Windows, the `where` command checks for availabilty in PATH. According |
| 186 |
to the manual(`where /?`), there is quiet mode: |
| 187 |
.... |
| 188 |
/Q Returns only the exit code, without displaying the list |
| 189 |
of matched files. (Quiet mode) |
| 190 |
.... |
| 191 |
*/ |
| 192 |
$output = array(); |
| 193 |
exec('where /Q ' . $command, $output, $return_val); |
| 194 |
|
| 195 |
if (intval($return_val) === 1) { |
| 196 |
return false; |
| 197 |
} else { |
| 198 |
return true; |
| 199 |
} |
| 200 |
|
| 201 |
} else { |
| 202 |
$last_line = exec('which ' . $command); |
| 203 |
$last_line = trim($last_line); |
| 204 |
|
| 205 |
// Whenever there is at least one line in the output, |
| 206 |
// it should be the path to the executable |
| 207 |
if (empty($last_line)) { |
| 208 |
return false; |
| 209 |
} else { |
| 210 |
return true; |
| 211 |
} |
| 212 |
} |
| 213 |
|
| 214 |
} |
| 215 |
|
| 216 |
/** |
| 217 |
* Create an export file from the tables with that prefix. |
| 218 |
* @param string $export_file_location the file to put the dump to. |
| 219 |
* Note that whenever the file has .gz extension the dump will be comporessed with gzip |
| 220 |
* @param string $table_prefix Allow to export only tables with particular prefix |
| 221 |
* @return void |
| 222 |
*/ |
| 223 |
abstract public function dump($export_file_location, $table_prefix=''); |
| 224 |
|
| 225 |
protected function get_tables($table_prefix) { |
| 226 |
if (!empty($this->include_tables)) { |
| 227 |
return $this->include_tables; |
| 228 |
} |
| 229 |
|
| 230 |
// $tables will only include the tables and not views. |
| 231 |
// TODO - Handle views also, edits to be made in function 'get_create_table_sql' line 336 |
| 232 |
$tables = $this->db->fetch_numeric(' |
| 233 |
SHOW FULL TABLES WHERE Table_Type = "BASE TABLE" AND Tables_in_'.$this->db->name.' LIKE "' . $this->db->escape_like($table_prefix) . '%" |
| 234 |
'); |
| 235 |
|
| 236 |
$tables_list = array(); |
| 237 |
foreach ($tables as $table_row) { |
| 238 |
$table_name = $table_row[0]; |
| 239 |
if (!in_array($table_name, $this->exclude_tables)) { |
| 240 |
$tables_list[] = $table_name; |
| 241 |
} |
| 242 |
} |
| 243 |
return $tables_list; |
| 244 |
} |
| 245 |
} |
| 246 |
|
| 247 |
class Shuttle_Dumper_ShellCommand extends Shuttle_Dumper { |
| 248 |
function dump($export_file_location, $table_prefix='') { |
| 249 |
$command = 'mysqldump -h ' . escapeshellarg($this->db->host) . |
| 250 |
' -u ' . escapeshellarg($this->db->username) . |
| 251 |
' --password=' . escapeshellarg($this->db->password) . |
| 252 |
' ' . escapeshellarg($this->db->name); |
| 253 |
|
| 254 |
$include_all_tables = empty($table_prefix) && |
| 255 |
empty($this->include_tables) && |
| 256 |
empty($this->exclude_tables); |
| 257 |
|
| 258 |
if (!$include_all_tables) { |
| 259 |
$tables = $this->get_tables($table_prefix); |
| 260 |
$command .= ' ' . implode(' ', array_map('escapeshellarg', $tables)); |
| 261 |
} |
| 262 |
|
| 263 |
$error_file = tempnam(sys_get_temp_dir(), 'err'); |
| 264 |
|
| 265 |
$command .= ' 2> ' . escapeshellarg($error_file); |
| 266 |
|
| 267 |
if (Shuttle_Dump_File::is_gzip($export_file_location)) { |
| 268 |
$command .= ' | gzip'; |
| 269 |
} |
| 270 |
|
| 271 |
$command .= ' > ' . escapeshellarg($export_file_location); |
| 272 |
|
| 273 |
exec($command, $output, $return_val); |
| 274 |
|
| 275 |
if ($return_val !== 0) { |
| 276 |
$error_text = file_get_contents($error_file); |
| 277 |
unlink($error_file); |
| 278 |
throw new Shuttle_Exception('Couldn\'t export database: ' . $error_text); |
| 279 |
} |
| 280 |
|
| 281 |
unlink($error_file); |
| 282 |
} |
| 283 |
} |
| 284 |
|
| 285 |
class Shuttle_Dumper_Native extends Shuttle_Dumper { |
| 286 |
public function dump($export_file_location, $table_prefix='') { |
| 287 |
global $wp_reset; |
| 288 |
$eol = $this->eol; |
| 289 |
|
| 290 |
$this->dump_file = Shuttle_Dump_File::create($export_file_location); |
| 291 |
|
| 292 |
$this->dump_file->write("-- Generation time: " . date('r') . $eol); |
| 293 |
$this->dump_file->write("-- Host: " . $this->db->host . $eol); |
| 294 |
$this->dump_file->write("-- DB name: " . $this->db->name . $eol); |
| 295 |
$this->dump_file->write("-- WP Reset ver: " . $wp_reset->get_plugin_version() . $eol); |
| 296 |
$this->dump_file->write("-- Table Prefix: " . $table_prefix . $eol); |
| 297 |
$this->dump_file->write("/*!40030 SET NAMES UTF8 */;$eol"); |
| 298 |
|
| 299 |
$this->dump_file->write("/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;$eol"); |
| 300 |
$this->dump_file->write("/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;$eol"); |
| 301 |
$this->dump_file->write("/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;$eol"); |
| 302 |
$this->dump_file->write("/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;$eol"); |
| 303 |
$this->dump_file->write("/*!40103 SET TIME_ZONE='+00:00' */;$eol"); |
| 304 |
$this->dump_file->write("/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;$eol"); |
| 305 |
$this->dump_file->write("/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;$eol"); |
| 306 |
$this->dump_file->write("/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;$eol"); |
| 307 |
$this->dump_file->write("/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;$eol$eol"); |
| 308 |
|
| 309 |
|
| 310 |
$tables = $this->get_tables($table_prefix); |
| 311 |
foreach ($tables as $table) { |
| 312 |
$this->dump_table($table); |
| 313 |
} |
| 314 |
|
| 315 |
$this->dump_file->write("$eol$eol"); |
| 316 |
$this->dump_file->write("/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;$eol"); |
| 317 |
$this->dump_file->write("/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;$eol"); |
| 318 |
$this->dump_file->write("/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;$eol"); |
| 319 |
$this->dump_file->write("/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;$eol"); |
| 320 |
$this->dump_file->write("/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;$eol"); |
| 321 |
$this->dump_file->write("/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;$eol"); |
| 322 |
$this->dump_file->write("/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;$eol$eol"); |
| 323 |
|
| 324 |
unset($this->dump_file); |
| 325 |
} |
| 326 |
|
| 327 |
protected function dump_table($table) { |
| 328 |
$eol = $this->eol; |
| 329 |
|
| 330 |
$this->dump_file->write("DROP TABLE IF EXISTS `$table`;$eol"); |
| 331 |
|
| 332 |
$create_table_sql = $this->get_create_table_sql($table); |
| 333 |
$this->dump_file->write($create_table_sql . $eol . $eol); |
| 334 |
|
| 335 |
$data = $this->db->query("SELECT * FROM `$table`"); |
| 336 |
|
| 337 |
$insert = new Shuttle_Insert_Statement($table); |
| 338 |
|
| 339 |
while ($row = $this->db->fetch_row($data)) { |
| 340 |
$row_values = array(); |
| 341 |
foreach ($row as $value) { |
| 342 |
$row_values[] = $this->db->escape($value); |
| 343 |
} |
| 344 |
$insert->add_row( $row_values ); |
| 345 |
|
| 346 |
if ($insert->get_length() > self::INSERT_THRESHOLD) { |
| 347 |
// The insert got too big: write the SQL and create |
| 348 |
// new insert statement |
| 349 |
$this->dump_file->write($insert->get_sql() . $eol); |
| 350 |
$insert->reset(); |
| 351 |
} |
| 352 |
} |
| 353 |
|
| 354 |
$sql = $insert->get_sql(); |
| 355 |
if ($sql) { |
| 356 |
$this->dump_file->write($insert->get_sql() . $eol); |
| 357 |
} |
| 358 |
$this->dump_file->write($eol . $eol); |
| 359 |
} |
| 360 |
|
| 361 |
public function get_create_table_sql($table) { |
| 362 |
$create_table_sql = $this->db->fetch('SHOW CREATE TABLE `' . $table . '`'); |
| 363 |
return $create_table_sql[0]['Create Table'] . ';'; |
| 364 |
} |
| 365 |
} |
| 366 |
|
| 367 |
class Shuttle_DBConn { |
| 368 |
public $host; |
| 369 |
public $username; |
| 370 |
public $password; |
| 371 |
public $name; |
| 372 |
|
| 373 |
protected $connection; |
| 374 |
|
| 375 |
function __construct($options) { |
| 376 |
$this->host = $options['host']; |
| 377 |
if (empty($this->host)) { |
| 378 |
$this->host = '127.0.0.1'; |
| 379 |
} |
| 380 |
$this->username = $options['username']; |
| 381 |
$this->password = $options['password']; |
| 382 |
$this->name = $options['db_name']; |
| 383 |
} |
| 384 |
|
| 385 |
static function create($options) { |
| 386 |
if (class_exists('mysqli')) { |
| 387 |
$class_name = "Shuttle_DBConn_Mysqli"; |
| 388 |
} else { |
| 389 |
$class_name = "Shuttle_DBConn_Mysql"; |
| 390 |
} |
| 391 |
|
| 392 |
return new $class_name($options); |
| 393 |
} |
| 394 |
} |
| 395 |
|
| 396 |
class Shuttle_DBConn_Mysql extends Shuttle_DBConn { |
| 397 |
function connect() { |
| 398 |
$this->connection = @mysql_connect($this->host, $this->username, $this->password); |
| 399 |
if (!$this->connection) { |
| 400 |
throw new Shuttle_Exception("Couldn't connect to the database: " . mysql_error()); |
| 401 |
} |
| 402 |
|
| 403 |
$select_db_res = mysql_select_db($this->name, $this->connection); |
| 404 |
if (!$select_db_res) { |
| 405 |
throw new Shuttle_Exception("Couldn't select database: " . mysql_error($this->connection)); |
| 406 |
} |
| 407 |
|
| 408 |
return true; |
| 409 |
} |
| 410 |
|
| 411 |
function query($q) { |
| 412 |
if (!$this->connection) { |
| 413 |
$this->connect(); |
| 414 |
} |
| 415 |
$res = mysql_query($q); |
| 416 |
if (!$res) { |
| 417 |
throw new Shuttle_Exception("SQL error: " . mysql_error($this->connection)); |
| 418 |
} |
| 419 |
return $res; |
| 420 |
} |
| 421 |
|
| 422 |
function fetch_numeric($query) { |
| 423 |
return $this->fetch($query, MYSQL_NUM); |
| 424 |
} |
| 425 |
|
| 426 |
function fetch($query, $result_type=MYSQL_ASSOC) { |
| 427 |
$result = $this->query($query, $this->connection); |
| 428 |
$return = array(); |
| 429 |
while ( $row = mysql_fetch_array($result, $result_type) ) { |
| 430 |
$return[] = $row; |
| 431 |
} |
| 432 |
return $return; |
| 433 |
} |
| 434 |
|
| 435 |
function escape($value) { |
| 436 |
if (is_null($value)) { |
| 437 |
return "NULL"; |
| 438 |
} |
| 439 |
return "'" . mysql_real_escape_string($value) . "'"; |
| 440 |
} |
| 441 |
|
| 442 |
function escape_like($search) { |
| 443 |
return str_replace(array('_', '%'), array('\_', '\%'), $search); |
| 444 |
} |
| 445 |
|
| 446 |
function get_var($sql) { |
| 447 |
$result = $this->query($sql); |
| 448 |
$row = mysql_fetch_array($result); |
| 449 |
return $row[0]; |
| 450 |
} |
| 451 |
|
| 452 |
function fetch_row($data) { |
| 453 |
return mysql_fetch_assoc($data); |
| 454 |
} |
| 455 |
} |
| 456 |
|
| 457 |
|
| 458 |
class Shuttle_DBConn_Mysqli extends Shuttle_DBConn { |
| 459 |
function connect() { |
| 460 |
$this->connection = @new MySQLi($this->host, $this->username, $this->password, $this->name); |
| 461 |
|
| 462 |
if ($this->connection->connect_error) { |
| 463 |
throw new Shuttle_Exception("Couldn't connect to the database: " . $this->connection->connect_error); |
| 464 |
} |
| 465 |
|
| 466 |
return true; |
| 467 |
} |
| 468 |
|
| 469 |
function query($q) { |
| 470 |
if (!$this->connection) { |
| 471 |
$this->connect(); |
| 472 |
} |
| 473 |
$res = $this->connection->query($q); |
| 474 |
|
| 475 |
if (!$res) { |
| 476 |
throw new Shuttle_Exception("SQL error: " . $this->connection->error); |
| 477 |
} |
| 478 |
|
| 479 |
return $res; |
| 480 |
} |
| 481 |
|
| 482 |
function fetch_numeric($query) { |
| 483 |
return $this->fetch($query, MYSQLI_NUM); |
| 484 |
} |
| 485 |
|
| 486 |
function fetch($query, $result_type=MYSQLI_ASSOC) { |
| 487 |
$result = $this->query($query, $this->connection); |
| 488 |
$return = array(); |
| 489 |
while ( $row = $result->fetch_array($result_type) ) { |
| 490 |
$return[] = $row; |
| 491 |
} |
| 492 |
return $return; |
| 493 |
} |
| 494 |
|
| 495 |
function escape($value) { |
| 496 |
if (is_null($value)) { |
| 497 |
return "NULL"; |
| 498 |
} |
| 499 |
return "'" . $this->connection->real_escape_string($value) . "'"; |
| 500 |
} |
| 501 |
|
| 502 |
function escape_like($search) { |
| 503 |
return str_replace(array('_', '%'), array('\_', '\%'), $search); |
| 504 |
} |
| 505 |
|
| 506 |
function get_var($sql) { |
| 507 |
$result = $this->query($sql); |
| 508 |
$row = $result->fetch_array($result, MYSQLI_NUM); |
| 509 |
return $row[0]; |
| 510 |
} |
| 511 |
|
| 512 |
function fetch_row($data) { |
| 513 |
return $data->fetch_array(MYSQLI_ASSOC); |
| 514 |
} |
| 515 |
} |
| 516 |
|
| 517 |
class Shuttle_Exception extends Exception {}; |
| 518 |
|
