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<?php |
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namespace Db3v4l\Core\DatabaseManager; |
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use Db3v4l\API\Interfaces\DatabaseManager; |
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use Db3v4l\API\Interfaces\SqlExecutor\Executor; |
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use Db3v4l\Core\SqlAction\Command; |
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class SQLServer extends BaseManager implements DatabaseManager |
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{ |
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/** |
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* Returns the sql 'action' used to list all available databases |
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* @return Command |
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* @todo for each database, retrieve the charset/collation |
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*/ |
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public function getListDatabasesSqlAction() |
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{ |
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return new Command( |
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// the way we create it, the user account is contained in the db |
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// @todo add "WHERE name NOT IN ('master', 'tempdb', 'model', 'msdb')" ? |
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"SELECT name AS 'Database' FROM sys.databases ORDER BY name;", |
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function ($output, $executor) { |
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/** @var Executor $executor */ |
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return $executor->resultSetToArray($output); |
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} |
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); |
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} |
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/** |
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* Returns the sql 'action' used to create a new db and accompanying user |
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* @param string $dbName |
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* @param string $userName |
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* @param string $password |
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* @param string $charset charset/collation name |
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* @return Command |
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* @todo prevent sql injection! |
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*/ |
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public function getCreateDatabaseSqlAction($dbName, $userName, $password, $charset = null) |
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{ |
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$collation = $this->getCollationName($charset); |
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$statements = [ |
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/// @see https://docs.microsoft.com/en-us/sql/tools/sqlcmd-utility |
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// When using sqlcmd, we are told _not_ to use GO as query terminator. |
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// Also, by default connections are in autocommit mode... |
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// And yet, we need a GO to commit the db creation... |
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"SET QUOTED_IDENTIFIER ON;", |
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"CREATE DATABASE \"$dbName\"" . ($collation !== null ? " COLLATE $collation" : '') . ';' |
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]; |
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if ($userName != '') { |
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$statements[] = "CREATE LOGIN \"$userName\" WITH PASSWORD = '$password', DEFAULT_DATABASE = \"$dbName\", CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF;"; |
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$statements[] = "GO"; |
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$statements[] = "USE \"$dbName\";"; |
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$statements[] = "CREATE USER \"$userName\" FOR LOGIN \"$userName\";"; |
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$statements[] = "ALTER ROLE db_owner ADD MEMBER \"$userName\";"; |
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} |
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return new Command($statements); |
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} |
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/** |
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* Returns the sql 'action' used to drop a db and associated user account |
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* @param string $dbName |
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* @param string $userName |
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* @return Command |
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* @param bool $ifExists |
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* @todo prevent sql injection! |
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*/ |
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public function getDropDatabaseSqlAction($dbName, $userName, $ifExists = false) |
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{ |
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$ifClause = ''; |
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if ($ifExists) { |
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$ifClause = 'IF EXISTS'; |
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} |
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$statements = [ |
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"SET QUOTED_IDENTIFIER ON;" |
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]; |
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if ($userName != '') { |
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// we assume users are 'local' to each db, as we create them by default |
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$statements[] = "USE \"$dbName\";"; |
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$statements[] = "DROP LOGIN \"$userName\";"; |
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$statements[] = "DROP USER {$ifClause} \"$userName\";"; |
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$statements[] = "USE \"master\";"; |
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} |
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$statements[] = "DROP DATABASE {$ifClause} \"$dbName\";"; |
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return new Command($statements); |
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} |
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/** |
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* Returns the sql 'action' used to list all existing db users |
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* @return Command |
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*/ |
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public function getListUsersSqlAction() |
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{ |
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return new Command( |
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"SELECT name AS 'User' FROM sys.sql_logins ORDER BY name", |
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function ($output, $executor) { |
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/** @var Executor $executor */ |
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return $executor->resultSetToArray($output); |
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} |
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); |
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} |
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/** |
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* @param string $userName |
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* @param bool $ifExists |
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* @return Command |
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* @todo prevent sql injection! |
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*/ |
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public function getDropUserSqlAction($userName, $ifExists = false) |
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{ |
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$ifClause = ''; |
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if ($ifExists) { |
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$ifClause = 'IF EXISTS'; |
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} |
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/// @todo if the user is created inside a specific db, this will fail. We need to add a USE DB cmd 1st... |
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/// to find out if a user exists in the current db: SELECT DATABASE_PRINCIPAL_ID('$user'); |
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return new Command([ |
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"SET QUOTED_IDENTIFIER ON;", |
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"DROP LOGIN \"$userName\";", |
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"DROP USER {$ifClause} \"$userName\";" |
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]); |
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} |
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/** |
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* Returns the sql 'action' used to list all available collations |
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* @return Command |
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*/ |
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public function getListCollationsSqlAction() |
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{ |
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return new Command( |
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'SELECT name AS Collation FROM fn_helpcollations();', |
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function ($output, $executor) { |
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/** @var Executor $executor */ |
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return $executor->resultSetToArray($output); |
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} |
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); |
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} |
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/** |
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* Returns the sql 'action' used to retrieve the db instance version info |
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* @return Command |
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*/ |
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public function getRetrieveVersionInfoSqlAction() |
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{ |
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return new Command( |
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"SELECT @@version", |
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function ($output, $executor) { |
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/** @var Executor $executor */ |
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$output = $executor->resultSetToArray($output); |
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$line = $output[0]; |
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preg_match('/Microsoft SQL Server +([^ ]+) +([^ ]+) +/', $line, $matches); |
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return $matches[1] . ' ' . $matches[2]; |
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} |
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); |
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} |
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/** |
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* Transform collation name into a supported one |
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* @param null|string $charset so far only 'utf8' is supported... |
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* @return null|string |
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* @todo what shall we accept as valid input, ie. 'generic' charset names ? maybe do 2 passes: known-db-charset => generic => specific for each db ? |
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* see: https://www.iana.org/assignments/character-sets/character-sets.xhtml for IANA names |
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*/ |
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protected function getCollationName($charset) |
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{ |
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if ($charset == null) { |
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return null; |
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} |
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$charset = trim(strtolower($charset)); |
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// accept official iana charset name, but most dbs prefer 'utf8'... |
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if ($charset == 'utf-8') { |
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$charset = 'utf8'; |
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} |
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if ($charset == 'utf8') { |
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if (version_compare( |
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str_replace(array('.ga', '.cu'), array('.0', '.'), $this->databaseConfiguration['version']), |
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'2019', |
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'>=') |
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) { |
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/// @todo allow to set this via configuration |
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// default collation for sql server on Linux is SQL_Latin1_General_CP1_CI_AS; we use the UTF8 variant |
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$charset = 'Latin1_General_100_CI_AI_SC_UTF8'; |
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} |
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} |
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return $charset; |
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} |
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} |
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gggeek /
db-3v4l
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