| 1 |
<?php |
| 2 |
/* |
| 3 |
* This file is part of the ManageWP Worker plugin. |
| 4 |
* |
| 5 |
* (c) ManageWP LLC <[email protected]> |
| 6 |
* |
| 7 |
* For the full copyright and license information, please view the LICENSE |
| 8 |
* file that was distributed with this source code. |
| 9 |
*/ |
| 10 |
|
| 11 |
class MWP_Action_IncrementalBackup_GetViewSchema |
| 12 |
{ |
| 13 |
const ERROR_VIEW_NOT_FOUND = 1; |
| 14 |
|
| 15 |
public function execute(array $params = array()) |
| 16 |
{ |
| 17 |
$views = $params['views']; |
| 18 |
|
| 19 |
$result = array(); |
| 20 |
|
| 21 |
foreach ($views as $view) { |
| 22 |
if (!$this->viewExists($view)) { |
| 23 |
$result[] = array( |
| 24 |
'name' => $view, |
| 25 |
'error' => self::ERROR_VIEW_NOT_FOUND, |
| 26 |
); |
| 27 |
continue; |
| 28 |
} |
| 29 |
|
| 30 |
$createTableSql = $this->getCreateViewSql($view); |
| 31 |
|
| 32 |
$result[] = array( |
| 33 |
'name' => $view, |
| 34 |
'createViewSql' => $createTableSql, |
| 35 |
); |
| 36 |
} |
| 37 |
|
| 38 |
return $result; |
| 39 |
} |
| 40 |
|
| 41 |
private function viewExists($table) |
| 42 |
{ |
| 43 |
$exists = (int) mwp_context()->getDb()->get_var( |
| 44 |
sprintf('SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = "%s" AND table_name = "%s"', |
| 45 |
mwp_context()->escapeParameter(mwp_context()->getDbName()), |
| 46 |
mwp_context()->escapeParameter($table)) |
| 47 |
); |
| 48 |
|
| 49 |
return $exists >= 1; |
| 50 |
} |
| 51 |
|
| 52 |
private function getCreateViewSql($table) |
| 53 |
{ |
| 54 |
$createTableResults = mwp_context()->getDb()->get_results( |
| 55 |
sprintf('SHOW CREATE VIEW `%s`', $this->escapeTableName($table)), |
| 56 |
ARRAY_A |
| 57 |
); |
| 58 |
|
| 59 |
return isset($createTableResults[0]['Create View']) ? $createTableResults[0]['Create View'] : null; |
| 60 |
} |
| 61 |
|
| 62 |
/** |
| 63 |
* Escape backticks (`) in table names. |
| 64 |
* A table can contain a backtick character (`) and it has to be escaped with another backtick. |
| 65 |
* This is only relevant |
| 66 |
* |
| 67 |
* e.g. asd`asd should be converted into asd``asd. |
| 68 |
* The resulting SQL query should look like: SELECT * FROM `asd``asd`; |
| 69 |
* |
| 70 |
* @param string $table |
| 71 |
* |
| 72 |
* @return string |
| 73 |
*/ |
| 74 |
private function escapeTableName($table) |
| 75 |
{ |
| 76 |
return str_replace('`', '``', $table); |
| 77 |
} |
| 78 |
} |
| 79 |
|
