| 1 |
<?php |
| 2 |
/** |
| 3 |
* DatabaseHandler.php |
| 4 |
* |
| 5 |
* The DatabaseHandler class file. |
| 6 |
* |
| 7 |
* PHP versions 5 |
| 8 |
* |
| 9 |
* @author Alexander Schneider <alexanderschneider85@gmail.com> |
| 10 |
* @copyright 2008-2017 Alexander Schneider |
| 11 |
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 |
| 12 |
* @version SVN: $id$ |
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* @link http://wordpress.org/extend/plugins/user-access-manager/ |
| 14 |
*/ |
| 15 |
namespace UserAccessManager\Setup\Database; |
| 16 |
|
| 17 |
use UserAccessManager\Database\Database; |
| 18 |
use UserAccessManager\Setup\Update\UpdateFactory; |
| 19 |
use UserAccessManager\Setup\Update\UpdateInterface; |
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use UserAccessManager\UserAccessManager; |
| 21 |
use UserAccessManager\Wrapper\Wordpress; |
| 22 |
|
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/** |
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* Class DatabaseHandler |
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* |
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* @package UserAccessManager\Setup\Database |
| 27 |
*/ |
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class DatabaseHandler |
| 29 |
{ |
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const MISSING_TABLES = 'MISSING_TABLE'; |
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const MISSING_COLUMNS = 'MISSING_COLUMNS'; |
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const MODIFIED_COLUMNS = 'MODIFIED_COLUMNS'; |
| 33 |
const EXTRA_COLUMNS = 'EXTRA_COLUMNS'; |
| 34 |
|
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/** |
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* @var Wordpress |
| 37 |
*/ |
| 38 |
private $wordpress; |
| 39 |
|
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/** |
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* @var Database |
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*/ |
| 43 |
private $database; |
| 44 |
|
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/** |
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* @var DatabaseObjectFactory |
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*/ |
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private $databaseObjectFactory; |
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|
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/** |
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* @var UpdateFactory |
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*/ |
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private $updateFactory; |
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|
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/** |
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* DatabaseHandler constructor. |
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* |
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* @param Wordpress $wordpress |
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* @param Database $database |
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* @param DatabaseObjectFactory $databaseObjectFactory |
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* @param UpdateFactory $updateFactory |
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*/ |
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public function __construct( |
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Wordpress $wordpress, |
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Database $database, |
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DatabaseObjectFactory $databaseObjectFactory, |
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UpdateFactory $updateFactory |
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) { |
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$this->wordpress = $wordpress; |
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$this->database = $database; |
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$this->databaseObjectFactory = $databaseObjectFactory; |
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$this->updateFactory = $updateFactory; |
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} |
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|
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/** |
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* Checks if the table exists. |
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* |
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* @param string $table |
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* |
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* @return bool |
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*/ |
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private function tableExists($table) |
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{ |
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$dbTable = $this->database->getVariable("SHOW TABLES LIKE '{$table}'"); |
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|
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return ($table === $dbTable); |
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} |
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|
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/** |
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* Adds a table. |
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* |
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* @param Table $table |
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*/ |
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private function addTable(Table $table) |
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{ |
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$this->database->dbDelta((string)$table); |
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} |
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|
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/** |
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* Returns all tables. |
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* |
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* @return Table[] |
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*/ |
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private function getTables() |
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{ |
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$charsetCollate = $this->database->getCharset(); |
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$tables = []; |
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|
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$tables[] = $this->databaseObjectFactory->createTable( |
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$this->database->getUserGroupTable(), |
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$charsetCollate, |
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[ |
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$this->databaseObjectFactory->createColumn('ID', 'INT(11)', false, null, true, true), |
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$this->databaseObjectFactory->createColumn('groupname', 'TINYTEXT'), |
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$this->databaseObjectFactory->createColumn('groupdesc', 'TEXT'), |
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$this->databaseObjectFactory->createColumn('read_access', 'TINYTEXT'), |
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$this->databaseObjectFactory->createColumn('write_access', 'TINYTEXT'), |
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$this->databaseObjectFactory->createColumn('ip_range', 'MEDIUMTEXT', true) |
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] |
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); |
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|
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$tables[] = $this->databaseObjectFactory->createTable( |
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$this->database->getUserGroupToObjectTable(), |
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$charsetCollate, |
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[ |
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$this->databaseObjectFactory->createColumn('object_id', 'VARCHAR(32)', false, null, true), |
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$this->databaseObjectFactory->createColumn('general_object_type', 'VARCHAR(64)'), |
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$this->databaseObjectFactory->createColumn('object_type', 'VARCHAR(32)', false, null, true), |
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$this->databaseObjectFactory->createColumn('group_id', 'VARCHAR(32)', false, null, true), |
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$this->databaseObjectFactory->createColumn('group_type', 'VARCHAR(32)', false, null, true), |
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$this->databaseObjectFactory->createColumn('from_date', 'DATETIME', true), |
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$this->databaseObjectFactory->createColumn('to_date', 'DATETIME', true) |
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] |
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); |
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|
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return $tables; |
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} |
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|
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/** |
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* Adds the tables to the database. |
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*/ |
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public function install() |
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{ |
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foreach ($this->getTables() as $table) { |
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if ($this->tableExists($table->getName()) === false) { |
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$this->addTable($table); |
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} |
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} |
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|
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$this->wordpress->addOption('uam_db_version', UserAccessManager::DB_VERSION); |
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} |
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|
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/** |
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* Returns the existing columns for a table. |
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* |
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* @param Table $table |
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* |
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* @return Column[] |
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*/ |
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private function getExistingColumns(Table $table) |
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{ |
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$query = "SHOW COLUMNS FROM `{$table->getName()}`;"; |
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$existingRawColumns = $this->database->getResults($query); |
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$existingColumns = []; |
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|
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foreach ($existingRawColumns as $existingRawColumn) { |
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$existingColumns[$existingRawColumn->Field] = $this->databaseObjectFactory->createColumn( |
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$existingRawColumn->Field, |
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strtoupper($existingRawColumn->Type), |
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$existingRawColumn->Null === 'YES', |
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$existingRawColumn->Default, |
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$existingRawColumn->Key === 'PRI', |
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$existingRawColumn->Extra === 'auto_increment' |
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); |
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} |
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|
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return $existingColumns; |
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} |
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|
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/** |
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* @return array |
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*/ |
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public function getCorruptedDatabaseInformation() |
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{ |
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$information = [ |
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self::MISSING_TABLES => [], |
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self::MISSING_COLUMNS => [], |
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self::MODIFIED_COLUMNS => [], |
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self::EXTRA_COLUMNS => [] |
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]; |
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|
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foreach ($this->getTables() as $table) { |
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if ($this->tableExists($table->getName()) === false) { |
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$information[self::MISSING_TABLES][] = $table; |
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continue; |
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} |
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|
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$existingColumns = $this->getExistingColumns($table); |
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|
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foreach ($table->getColumns() as $column) { |
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if (isset($existingColumns[$column->getName()]) === false) { |
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$information[self::MISSING_COLUMNS][] = [$table, $column]; |
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continue; |
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} |
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|
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$existingColumn = $existingColumns[$column->getName()]; |
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unset($existingColumns[$column->getName()]); |
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|
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if ((string)$column !== (string)$existingColumn) { |
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$information[self::MODIFIED_COLUMNS][] = [$table, $column]; |
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continue; |
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} |
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} |
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|
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foreach ($existingColumns as $existingColumn) { |
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$information[self::EXTRA_COLUMNS][] = [$table, $existingColumn]; |
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} |
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} |
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|
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return $information; |
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} |
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|
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/** |
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* Adds a new column. |
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* |
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* @param Table $table |
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* @param Column $column |
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* |
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* @return bool |
| 230 |
*/ |
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private function addColumn(Table $table, Column $column) |
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{ |
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return $this->database->query("ALTER TABLE `{$table->getName()}` ADD $column;") !== false; |
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} |
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|
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/** |
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* Modify an existing column. |
| 238 |
* |
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* @param Table $table |
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* @param Column $column |
| 241 |
* |
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* @return bool |
| 243 |
*/ |
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private function modifyColumn(Table $table, Column $column) |
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{ |
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return $this->database->query("ALTER TABLE `{$table->getName()}` MODIFY $column;") !== false; |
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} |
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|
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/** |
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* Drops an existing column. |
| 251 |
* |
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* @param Table $table |
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* @param Column $column |
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* |
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* @return bool |
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*/ |
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private function dropColumn(Table $table, Column $column) |
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{ |
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return $this->database->query("ALTER TABLE `{$table->getName()}` DROP `{$column->getName()}`;") !== false; |
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} |
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|
| 262 |
/** |
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* Repairs a corrupt database. |
| 264 |
* |
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* @param array $information |
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* |
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* @return bool |
| 268 |
*/ |
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public function repairDatabase(array $information = []) |
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{ |
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$success = true; |
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$information = ($information === []) ? $this->getCorruptedDatabaseInformation() : $information; |
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|
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foreach ($information[self::MISSING_TABLES] as $table) { |
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$this->addTable($table); |
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} |
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|
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foreach ($information[self::MISSING_COLUMNS] as $columnInformation) { |
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$success = $success && $this->addColumn($columnInformation[0], $columnInformation[1]); |
| 280 |
} |
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|
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foreach ($information[self::MODIFIED_COLUMNS] as $columnInformation) { |
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$success = $success && $this->modifyColumn($columnInformation[0], $columnInformation[1]); |
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} |
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|
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foreach ($information[self::EXTRA_COLUMNS] as $columnInformation) { |
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$success = $success && $this->dropColumn($columnInformation[0], $columnInformation[1]); |
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} |
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|
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return $success; |
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} |
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|
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/** |
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* Checks if a database update is necessary. |
| 295 |
* |
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* @return bool |
| 297 |
*/ |
| 298 |
public function isDatabaseUpdateNecessary() |
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{ |
| 300 |
if ($this->wordpress->isSuperAdmin() === true) { |
| 301 |
foreach ($this->wordpress->getSites() as $site) { |
| 302 |
$table = $this->database->getBlogPrefix($site->blog_id).'options'; |
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$select = "SELECT option_value FROM {$table} WHERE option_name = '%s' LIMIT 1"; |
| 304 |
$select = $this->database->prepare($select, 'uam_db_version'); |
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$currentDbVersion = $this->database->getVariable($select); |
| 306 |
|
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if ($currentDbVersion !== null |
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&& version_compare($currentDbVersion, UserAccessManager::DB_VERSION, '<') === true |
| 309 |
) { |
| 310 |
return true; |
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} |
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} |
| 313 |
} |
| 314 |
|
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$currentDbVersion = $this->wordpress->getOption('uam_db_version'); |
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return version_compare($currentDbVersion, UserAccessManager::DB_VERSION, '<'); |
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} |
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|
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/** |
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* Creates a database backup. |
| 321 |
* |
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* @return bool |
| 323 |
*/ |
| 324 |
public function backupDatabase() |
| 325 |
{ |
| 326 |
$currentDbVersion = $this->wordpress->getOption('uam_db_version'); |
| 327 |
|
| 328 |
if (empty($currentDbVersion) === true |
| 329 |
|| version_compare($currentDbVersion, '1.2', '<') === true |
| 330 |
) { |
| 331 |
return false; |
| 332 |
} |
| 333 |
|
| 334 |
$tables = [ |
| 335 |
$this->database->getUserGroupTable(), |
| 336 |
$this->database->getUserGroupToObjectTable() |
| 337 |
]; |
| 338 |
|
| 339 |
$currentDbVersion = str_replace('.', '-', $currentDbVersion); |
| 340 |
$success = true; |
| 341 |
|
| 342 |
foreach ($tables as $table) { |
| 343 |
$createQuery = "CREATE TABLE `{$table}_{$currentDbVersion}` LIKE `{$table}`"; |
| 344 |
$success = $success && ($this->database->query($createQuery) !== false); |
| 345 |
$insertQuery = "INSERT `{$table}_{$currentDbVersion}` SELECT * FROM `{$table}`"; |
| 346 |
$success = $success && ($this->database->query($insertQuery) !== false); |
| 347 |
} |
| 348 |
|
| 349 |
return $success; |
| 350 |
} |
| 351 |
|
| 352 |
/** |
| 353 |
* Returns the version for which a backup was created. |
| 354 |
* |
| 355 |
* @return array |
| 356 |
*/ |
| 357 |
public function getBackups() |
| 358 |
{ |
| 359 |
$versions = []; |
| 360 |
$tables = (array)$this->database->getColumn( |
| 361 |
"SHOW TABLES LIKE '{$this->database->getPrefix()}uam_%'" |
| 362 |
); |
| 363 |
|
| 364 |
foreach ($tables as $table) { |
| 365 |
if (preg_match('/.*\_([0-9\-]+)/i', $table, $matches) === 1) { |
| 366 |
$version = str_replace('-', '.', $matches[1]); |
| 367 |
$versions[$version] = $version; |
| 368 |
} |
| 369 |
} |
| 370 |
|
| 371 |
return $versions; |
| 372 |
} |
| 373 |
|
| 374 |
/** |
| 375 |
* Returns the backup tables for the given version. |
| 376 |
* |
| 377 |
* @param string $version |
| 378 |
* |
| 379 |
* @return array |
| 380 |
*/ |
| 381 |
private function getBackupTables($version) |
| 382 |
{ |
| 383 |
$backupTables = []; |
| 384 |
$tables = [ |
| 385 |
$this->database->getUserGroupTable(), |
| 386 |
$this->database->getUserGroupToObjectTable() |
| 387 |
]; |
| 388 |
|
| 389 |
$versionForDb = str_replace('.', '-', $version); |
| 390 |
|
| 391 |
foreach ($tables as $table) { |
| 392 |
$backupTable = (string)$this->database->getVariable( |
| 393 |
"SHOW TABLES LIKE '{$table}_{$versionForDb}'" |
| 394 |
); |
| 395 |
|
| 396 |
if ($backupTable !== '') { |
| 397 |
$backupTables[$table] = $backupTable; |
| 398 |
} |
| 399 |
} |
| 400 |
|
| 401 |
return $backupTables; |
| 402 |
} |
| 403 |
|
| 404 |
/** |
| 405 |
* Reverts the database to the given version. |
| 406 |
* |
| 407 |
* @param string $version |
| 408 |
* |
| 409 |
* @return bool |
| 410 |
*/ |
| 411 |
public function revertDatabase($version) |
| 412 |
{ |
| 413 |
$success = true; |
| 414 |
$tables = $this->getBackupTables($version); |
| 415 |
|
| 416 |
foreach ($tables as $table => $backupTable) { |
| 417 |
$dropQuery = "DROP TABLE IF EXISTS `{$table}`"; |
| 418 |
$success = $success && ($this->database->query($dropQuery) !== false); |
| 419 |
$renameQuery = "RENAME TABLE `{$backupTable}` TO `{$table}`"; |
| 420 |
$success = $success && ($this->database->query($renameQuery) !== false); |
| 421 |
} |
| 422 |
|
| 423 |
if ($success === true) { |
| 424 |
$this->wordpress->updateOption('uam_db_version', $version); |
| 425 |
} |
| 426 |
|
| 427 |
return $success; |
| 428 |
} |
| 429 |
|
| 430 |
/** |
| 431 |
* Deletes the given database backup. |
| 432 |
* |
| 433 |
* @param string $version |
| 434 |
* |
| 435 |
* @return bool |
| 436 |
*/ |
| 437 |
public function deleteBackup($version) |
| 438 |
{ |
| 439 |
$success = true; |
| 440 |
$tables = $this->getBackupTables($version); |
| 441 |
|
| 442 |
foreach ($tables as $table => $backupTable) { |
| 443 |
$dropQuery = "DROP TABLE IF EXISTS `{$backupTable}`"; |
| 444 |
$success = $success && ($this->database->query($dropQuery) !== false); |
| 445 |
} |
| 446 |
|
| 447 |
return $success; |
| 448 |
} |
| 449 |
|
| 450 |
/** |
| 451 |
* Returns the ordered updates. |
| 452 |
* |
| 453 |
* @return UpdateInterface[] |
| 454 |
*/ |
| 455 |
private function getOrderedDatabaseUpdates() |
| 456 |
{ |
| 457 |
$rawUpdates = $this->updateFactory->getDatabaseUpdates(); |
| 458 |
$updates = []; |
| 459 |
|
| 460 |
foreach ($rawUpdates as $rawUpdate) { |
| 461 |
$updates[$rawUpdate->getVersion()] = $rawUpdate; |
| 462 |
} |
| 463 |
|
| 464 |
uksort($updates, 'version_compare'); |
| 465 |
return $updates; |
| 466 |
} |
| 467 |
|
| 468 |
/** |
| 469 |
* Updates the database. |
| 470 |
* |
| 471 |
* @return bool |
| 472 |
*/ |
| 473 |
public function updateDatabase() |
| 474 |
{ |
| 475 |
$currentDbVersion = $this->wordpress->getOption('uam_db_version'); |
| 476 |
|
| 477 |
if (empty($currentDbVersion) === true) { |
| 478 |
return false; |
| 479 |
} |
| 480 |
|
| 481 |
$success = true; |
| 482 |
|
| 483 |
foreach ($this->getOrderedDatabaseUpdates() as $orderedUpdate) { |
| 484 |
if (version_compare($currentDbVersion, $orderedUpdate->getVersion(), '<') === true) { |
| 485 |
$success = $success && $orderedUpdate->update(); |
| 486 |
} |
| 487 |
} |
| 488 |
|
| 489 |
if ($success === true) { |
| 490 |
$this->wordpress->updateOption('uam_db_version', UserAccessManager::DB_VERSION); |
| 491 |
} |
| 492 |
|
| 493 |
return $success; |
| 494 |
} |
| 495 |
|
| 496 |
/** |
| 497 |
* Removes the tables. |
| 498 |
*/ |
| 499 |
public function removeTables() |
| 500 |
{ |
| 501 |
foreach ($this->getTables() as $table) { |
| 502 |
$dropQuery = "DROP TABLE IF EXISTS `{$table->getName()}`"; |
| 503 |
$this->database->query($dropQuery); |
| 504 |
} |
| 505 |
} |
| 506 |
} |
| 507 |
|
