FirejailCommandTest.php

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<?php
 
use MediaWiki\Shell\FirejailCommand;
use MediaWiki\Shell\Shell;
 
class FirejailCommandIntegrationTest extends PHPUnit\Framework\TestCase {
 
    public function setUp() {
        parent::setUp();
        if ( Shell::isDisabled() ) {
            $this->markTestSkipped( 'shelling out is disabled' );
        } elseif ( Shell::command( 'which', 'firejail' )->execute()->getExitCode() ) {
            $this->markTestSkipped( 'firejail not installed' );
        } elseif ( wfIsWindows() ) {
            $this->markTestSkipped( 'test supports POSIX environments only' );
        }
    }
 
    public function testSanity() {
        // Make sure that firejail works at all.
        $command = new FirejailCommand( 'firejail' );
        $command
            ->unsafeParams( 'ls .' )
            ->restrict( Shell::RESTRICT_DEFAULT );
        $result = $command->execute();
        $this->assertSame( 0, $result->getExitCode() );
    }
 
    public function testExecute( $testCommand, $flag ) {
        if ( preg_match( '/^sudo /', $testCommand ) ) {
            if ( Shell::command( 'sudo', '-n', 'ls', '/' )->execute()->getExitCode() ) {
                $this->markTestSkipped( 'need passwordless sudo' );
            }
        }
 
        $command = new FirejailCommand( 'firejail' );
        $command
            ->unsafeParams( $testCommand )
            // If we don't restrict at all, firejail won't be invoked,
            // so the test will give a false positive if firejail breaks
            // the command for some non-flag-related reason. Instead,
            // set some flag that won't get in the way.
            ->restrict( $flag === Shell::NO_NETWORK ? Shell::PRIVATE_DEV : Shell::NO_NETWORK );
        $result = $command->execute();
        $this->assertSame( 0, $result->getExitCode(), 'sanity check' );
 
        $command = new FirejailCommand( 'firejail' );
        $command
            ->unsafeParams( $testCommand )
            ->restrict( $flag );
        $result = $command->execute();
        $this->assertNotSame( 0, $result->getExitCode(), 'real check' );
    }
 
    public function provideExecute() {
        global $IP;
        return [
            [ 'sudo -n ls /', Shell::NO_ROOT ],
            [ 'sudo -n ls /', Shell::SECCOMP ], // not a great test but seems to work
            [ 'ls /dev/cpu', Shell::PRIVATE_DEV ],
            [ 'curl -fsSo /dev/null https://wikipedia.org/', Shell::NO_NETWORK ],
            [ 'exec ls /', Shell::NO_EXECVE ],
            [ "cat $IP/LocalSettings.php", Shell::NO_LOCALSETTINGS ],
        ];
    }
 
}