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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Shell;
use ExecutableFinder;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\NullLogger;
/**
* Factory facilitating dependency injection for Command
*
* @since 1.30
*/
class CommandFactory {
use LoggerAwareTrait;
/** @var array */
private $limits;
/** @var string|bool */
private $cgroup;
/** @var bool */
private $doLogStderr = false;
/**
* @var string|bool
*/
private $restrictionMethod;
/**
* @var string|bool
*/
private $firejail;
/**
* @param array $limits See {@see Command::limits()}
* @param string|bool $cgroup See {@see Command::cgroup()}
* @param string|bool $restrictionMethod
*/
public function __construct( array $limits, $cgroup, $restrictionMethod ) {
$this->limits = $limits;
$this->cgroup = $cgroup;
if ( $restrictionMethod === 'autodetect' ) {
// On Linux systems check for firejail
if ( PHP_OS === 'Linux' && $this->findFirejail() !== null ) {
$this->restrictionMethod = 'firejail';
} else {
$this->restrictionMethod = false;
}
} else {
$this->restrictionMethod = $restrictionMethod;
}
$this->setLogger( new NullLogger() );
}
protected function findFirejail(): ?string {
if ( $this->firejail === null ) {
// Convert a `false` from ExecutableFinder to `null` (T257282)
$this->firejail = ExecutableFinder::findInDefaultPaths( 'firejail' ) ?: null;
}
return $this->firejail;
}
/**
* When enabled, text sent to stderr will be logged with a level of 'error'.
*
* @param bool $yesno
* @see Command::logStderr
*/
public function logStderr( bool $yesno = true ): void {
$this->doLogStderr = $yesno;
}
/**
* Instantiates a new Command
*
* @return Command
*/
public function create(): Command {
if ( $this->restrictionMethod === 'firejail' ) {
$command = new FirejailCommand( $this->findFirejail() );
$command->restrict( Shell::RESTRICT_DEFAULT );
} else {
$command = new Command();
}
$command->setLogger( $this->logger );
return $command
->limits( $this->limits )
->cgroup( $this->cgroup )
->logStderr( $this->doLogStderr );
}
}
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