Class used for executing shell commands. More...

Inheritance diagram for MediaWiki\Shell\Command:

Public Member Functions
	__construct ()
	Don't call directly, instead use Shell::command()

	__destruct ()
	Makes sure the programmer didn't forget to execute the command after all.

	__toString ()
	Returns the final command line before environment/limiting, etc are applied.

	cgroup ( $cgroup)
	Sets cgroup for this command.

	environment (array $env)
	Sets environment variables which should be added to the executed command environment.

	execute ()
	Executes command.

	includeStderr ( $yesno=true)
	Controls whether stderr should be included in stdout, including errors from limit.sh.

	input ( $inputString)
	Sends the provided input to the command.

	limits (array $limits)
	Sets execution limits.

	logStderr ( $yesno=true)
	When enabled, text sent to stderr will be logged with a level of 'error'.

	params (... $args)
	Adds parameters to the command.

	profileMethod ( $method)
	Sets calling function for profiler.

	restrict ( $restrictions)
	Set restrictions for this request, overwriting any previously set restrictions.

	unsafeParams (... $args)
	Adds unsafe parameters to the command.

	whitelistPaths (array $paths)
	If called, only the files/directories that are whitelisted will be available to the shell command.

Protected Member Functions
	buildFinalCommand ( $command)
	String together all the options and build the final command to execute.

	hasRestriction ( $restriction)
	Bitfield helper on whether a specific restriction is enabled.

Protected Attributes
string	$command = ''

int	$restrictions = 0
	Bitfield with restrictions.

Private Attributes
string false	$cgroup = false

bool	$doIncludeStderr = false

bool	$doLogStderr = false

string[]	$env = []

bool	$everExecuted = false

string null	$inputString

array	$limits

string	$method

Detailed Description

Class used for executing shell commands.

Since: 1.30

Definition at line 36 of file Command.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\Shell\Command::__construct ( )

Don't call directly, instead use Shell::command()

Exceptions

ShellDisabledError

Definition at line 87 of file Command.php.

References MediaWiki\Shell\Shell\isDisabled().

◆ __destruct()

MediaWiki\Shell\Command::__destruct ( )

Makes sure the programmer didn't forget to execute the command after all.

Definition at line 98 of file Command.php.

References MediaWiki\Shell\Command\$command, $context, and MediaWiki\Shell\Command\$method.

Member Function Documentation

◆ __toString()

MediaWiki\Shell\Command::__toString ( )

Returns the final command line before environment/limiting, etc are applied.

Use string conversion only for debugging, don't try to pass this to some other execution medium.

Returns: string

Definition at line 593 of file Command.php.

◆ buildFinalCommand()

MediaWiki\Shell\Command::buildFinalCommand ( $command )

protected

String together all the options and build the final command to execute.

Parameters

string $command Already-escaped command to run

Returns: array [ command, whether to use log pipe ]

Reimplemented in MediaWiki\Shell\FirejailCommand.

Definition at line 304 of file Command.php.

References $command, and wfIsWindows().

◆ cgroup()

MediaWiki\Shell\Command::cgroup ( $cgroup )

Sets cgroup for this command.

Parameters

string | false $cgroup Absolute file path to the cgroup, or false to not use a cgroup

Returns: $this

Definition at line 237 of file Command.php.

◆ environment()

MediaWiki\Shell\Command::environment ( array $env )

Sets environment variables which should be added to the executed command environment.

Parameters

string[] $env array of variable name => value

Returns: $this

Definition at line 176 of file Command.php.

◆ execute()

MediaWiki\Shell\Command::execute ( )

Executes command.

Afterwards, getExitCode() and getOutput() can be used to access execution results.

Returns: Result

Exceptions

Exception
ProcOpenError
ShellDisabledError

Definition at line 367 of file Command.php.

References $line, $lines, $res, SHELL_MAX_ARG_STRLEN, wfGetCaller(), and wfIsWindows().

◆ hasRestriction()

MediaWiki\Shell\Command::hasRestriction ( $restriction )

protected

Bitfield helper on whether a specific restriction is enabled.

Parameters

int $restriction

Returns: bool

Definition at line 278 of file Command.php.

◆ includeStderr()

MediaWiki\Shell\Command::includeStderr ( $yesno = true )

Controls whether stderr should be included in stdout, including errors from limit.sh.

Default: don't include.

Parameters

bool $yesno

Returns: $this

Definition at line 213 of file Command.php.

◆ input()

MediaWiki\Shell\Command::input ( $inputString )

Sends the provided input to the command.

When set to null (default), the command will use the standard input.

Parameters

string | null $inputString

Returns: $this

Definition at line 200 of file Command.php.

◆ limits()

MediaWiki\Shell\Command::limits ( array $limits )

Sets execution limits.

Parameters

array $limits Associative array of limits. Keys (all optional): filesize (for ulimit -f), memory, time, walltime.

Returns: $this

Definition at line 159 of file Command.php.

◆ logStderr()

MediaWiki\Shell\Command::logStderr ( $yesno = true )

When enabled, text sent to stderr will be logged with a level of 'error'.

Parameters

bool $yesno

Returns: $this

Definition at line 225 of file Command.php.

◆ params()

MediaWiki\Shell\Command::params ( $args )

Adds parameters to the command.

All parameters are sanitized via Shell::escape(). Null values are ignored.

Parameters

string|string[] ...$args

Returns: $this

Reimplemented in MediaWiki\Shell\FirejailCommand.

Definition at line 118 of file Command.php.

References $args.

◆ profileMethod()

MediaWiki\Shell\Command::profileMethod ( $method )

Sets calling function for profiler.

By default, the caller for execute() will be used.

Parameters

string $method

Returns: $this

Definition at line 188 of file Command.php.

◆ restrict()

MediaWiki\Shell\Command::restrict ( $restrictions )

Set restrictions for this request, overwriting any previously set restrictions.

Add the "no network" restriction:

$command->restrict( Shell::RESTRICT_DEFAULT | Shell::NO_NETWORK );

$command

Definition cdb.php:65

Allow LocalSettings.php access:

$command->restrict( Shell::RESTRICT_DEFAULT & ~Shell::NO_LOCALSETTINGS );

Disable all restrictions:

$command->restrict( Shell::RESTRICT_NONE );

Since: 1.31

Parameters

int $restrictions

Returns: $this

Definition at line 265 of file Command.php.

◆ unsafeParams()

MediaWiki\Shell\Command::unsafeParams ( $args )

Adds unsafe parameters to the command.

These parameters are NOT sanitized in any way. Null values are ignored.

Parameters

string|string[] ...$args

Returns: $this

Definition at line 136 of file Command.php.

References $args.

◆ whitelistPaths()

MediaWiki\Shell\Command::whitelistPaths ( array $paths )

If called, only the files/directories that are whitelisted will be available to the shell command.

limit.sh will always be whitelisted

Parameters

string[] $paths

Returns: $this

Reimplemented in MediaWiki\Shell\FirejailCommand.

Definition at line 292 of file Command.php.

Member Data Documentation

◆ $cgroup

string false MediaWiki\Shell\Command::$cgroup = false

private

Definition at line 73 of file Command.php.

◆ $command

string MediaWiki\Shell\Command::$command = ''

protected

Definition at line 40 of file Command.php.

Referenced by MediaWiki\Shell\Command\__destruct().

◆ $doIncludeStderr

bool MediaWiki\Shell\Command::$doIncludeStderr = false

private

Definition at line 64 of file Command.php.

◆ $doLogStderr

bool MediaWiki\Shell\Command::$doLogStderr = false

private

Definition at line 67 of file Command.php.

◆ $env

string [] MediaWiki\Shell\Command::$env = []

private

Definition at line 55 of file Command.php.

◆ $everExecuted

bool MediaWiki\Shell\Command::$everExecuted = false

private

Definition at line 70 of file Command.php.

◆ $inputString

string null MediaWiki\Shell\Command::$inputString

private

Definition at line 61 of file Command.php.

◆ $limits

array MediaWiki\Shell\Command::$limits

private

Initial value:

= [
        
        'time' => 180,
        
        'walltime' => 180,
        
        'memory' => 307200,
        
        'filesize' => 102400,
    ]

Definition at line 43 of file Command.php.

◆ $method

string MediaWiki\Shell\Command::$method

private

Definition at line 58 of file Command.php.

Referenced by MediaWiki\Shell\Command\__destruct().

◆ $restrictions

int MediaWiki\Shell\Command::$restrictions = 0

protected

Bitfield with restrictions.

Definition at line 80 of file Command.php.

The documentation for this class was generated from the following file:

includes/shell/Command.php

Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

◆ __destruct()

Member Function Documentation

◆ __toString()

◆ buildFinalCommand()

◆ cgroup()

◆ environment()

◆ execute()

◆ hasRestriction()

◆ includeStderr()

◆ input()

◆ limits()

◆ logStderr()

◆ params()

◆ profileMethod()

◆ restrict()

◆ unsafeParams()

◆ whitelistPaths()

Member Data Documentation

◆ $cgroup

◆ $command

◆ $doIncludeStderr

◆ $doLogStderr

◆ $env

◆ $everExecuted

◆ $inputString

◆ $limits

◆ $method

◆ $restrictions