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<?php
/**
* Print serialized output of MediaWiki config vars.
*
* 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
* @ingroup Maintenance
* @author Tim Starling
* @author Antoine Musso <hashar@free.fr>
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Print serialized output of MediaWiki config vars
*
* @ingroup Maintenance
*/
class GetConfiguration extends Maintenance {
protected $regex = null;
protected $settings_list = [];
/**
* List of format output internally supported.
* Each item MUST be lower case.
*/
protected static $outFormats = [
'json',
'php',
'serialize',
'vardump',
];
public function __construct() {
parent::__construct();
$this->addDescription( 'Get serialized MediaWiki site configuration' );
$this->addOption( 'regex', 'regex to filter variables with', false, true );
$this->addOption( 'iregex', 'same as --regex but case insensitive', false, true );
$this->addOption( 'settings', 'Space-separated list of wg* variables', false, true );
$this->addOption( 'format', implode( ', ', self::$outFormats ), false, true );
}
protected function validateParamsAndArgs() {
$error_out = false;
# Get the format and make sure it is set to a valid default value
$format = strtolower( $this->getOption( 'format', 'PHP' ) );
$validFormat = in_array( $format, self::$outFormats );
if ( !$validFormat ) {
$this->error( "--format set to an unrecognized format", 0 );
$error_out = true;
}
if ( $this->getOption( 'regex' ) && $this->getOption( 'iregex' ) ) {
$this->error( "Can only use either --regex or --iregex" );
$error_out = true;
}
parent::validateParamsAndArgs();
if ( $error_out ) {
# Force help and quit
$this->maybeHelp( true );
}
}
/**
* finalSetup() since we need MWException
*/
public function finalSetup() {
parent::finalSetup();
$this->regex = $this->getOption( 'regex' ) ?: $this->getOption( 'iregex' );
if ( $this->regex ) {
$this->regex = '/' . $this->regex . '/';
if ( $this->hasOption( 'iregex' ) ) {
$this->regex .= 'i'; # case insensitive regex
}
}
if ( $this->hasOption( 'settings' ) ) {
$this->settings_list = explode( ' ', $this->getOption( 'settings' ) );
# Values validation
foreach ( $this->settings_list as $name ) {
if ( !preg_match( '/^wg[A-Z]/', $name ) ) {
throw new MWException( "Variable '$name' does start with 'wg'." );
} elseif ( !isset( $GLOBALS[$name] ) ) {
throw new MWException( "Variable '$name' is not set." );
} elseif ( !$this->isAllowedVariable( $GLOBALS[$name] ) ) {
throw new MWException( "Variable '$name' includes non-array, non-scalar, items." );
}
}
}
}
public function execute() {
// Settings we will display
$res = [];
# Sane default: dump any wg / wmg variable
if ( !$this->regex && !$this->getOption( 'settings' ) ) {
$this->regex = '/^wm?g/';
}
# Filter out globals based on the regex
if ( $this->regex ) {
$res = [];
foreach ( $GLOBALS as $name => $value ) {
if ( preg_match( $this->regex, $name ) ) {
$res[$name] = $value;
}
}
}
# Explicitly dumps a list of provided global names
if ( $this->settings_list ) {
foreach ( $this->settings_list as $name ) {
$res[$name] = $GLOBALS[$name];
}
}
ksort( $res );
$out = null;
switch ( strtolower( $this->getOption( 'format' ) ) ) {
case 'serialize':
case 'php':
$out = serialize( $res );
break;
case 'vardump':
$out = $this->formatVarDump( $res );
break;
case 'json':
$out = FormatJson::encode( $res );
break;
default:
throw new MWException( "Invalid serialization format given." );
}
if ( !is_string( $out ) ) {
throw new MWException( "Failed to serialize the requested settings." );
}
if ( $out ) {
$this->output( $out . "\n" );
}
}
protected function formatVarDump( $res ) {
$ret = '';
foreach ( $res as $key => $value ) {
ob_start(); # intercept var_dump() output
print "\${$key} = ";
var_dump( $value );
# grab var_dump() output and discard it from the output buffer
$ret .= trim( ob_get_clean() ) . ";\n";
}
return trim( $ret, "\n" );
}
private function isAllowedVariable( $value ) {
if ( is_array( $value ) ) {
foreach ( $value as $k => $v ) {
if ( !$this->isAllowedVariable( $v ) ) {
return false;
}
}
return true;
} elseif ( is_scalar( $value ) || $value === null ) {
return true;
}
return false;
}
}
$maintClass = "GetConfiguration";
require_once RUN_MAINTENANCE_IF_MAIN;