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<?php
/**
* Implements Special:Lockdb
*
* 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 SpecialPage
*/
/**
* A form to make the database readonly (eg for maintenance purposes).
*
* @ingroup SpecialPage
*/
class SpecialLockdb extends SpecialPage {
var $reason = '';
public function __construct() {
parent::__construct( 'Lockdb', 'siteadmin' );
}
public function execute( $par ) {
global $wgUser, $wgOut, $wgRequest;
$this->setHeaders();
if( !$wgUser->isAllowed( 'siteadmin' ) ) {
$wgOut->permissionRequired( 'siteadmin' );
return;
}
$this->outputHeader();
# If the lock file isn't writable, we can do sweet bugger all
global $wgReadOnlyFile;
if( !is_writable( dirname( $wgReadOnlyFile ) ) ) {
self::notWritable();
return;
}
$action = $wgRequest->getVal( 'action' );
$this->reason = $wgRequest->getVal( 'wpLockReason', '' );
if ( $action == 'success' ) {
$this->showSuccess();
} else if ( $action == 'submit' && $wgRequest->wasPosted() &&
$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ) ) ) {
$this->doSubmit();
} else {
$this->showForm();
}
}
private function showForm( $err = '' ) {
global $wgOut, $wgUser;
$wgOut->addWikiMsg( 'lockdbtext' );
if ( $err != '' ) {
$wgOut->setSubtitle( wfMsg( 'formerror' ) );
$wgOut->addHTML( '<p class="error">' . htmlspecialchars( $err ) . "</p>\n" );
}
$wgOut->addHTML(
Html::openElement( 'form', array( 'id' => 'lockdb', 'method' => 'POST',
'action' => $this->getTitle()->getLocalURL( 'action=submit' ) ) ). "\n" .
wfMsgHtml( 'enterlockreason' ) . ":\n" .
Html::textarea( 'wpLockReason', $this->reason, array( 'rows' => 4 ) ). "
<table>
<tr>
" . Html::openElement( 'td', array( 'style' => 'text-align:right' ) ) . "
" . Html::input( 'wpLockConfirm', null, 'checkbox' ) . "
</td>
" . Html::openElement( 'td', array( 'style' => 'text-align:left' ) ) .
wfMsgHtml( 'lockconfirm' ) . "</td>
</tr>
<tr>
<td> </td>
" . Html::openElement( 'td', array( 'style' => 'text-align:left' ) ) . "
" . Html::input( 'wpLock', wfMsg( 'lockbtn' ), 'submit' ) . "
</td>
</tr>
</table>\n" .
Html::hidden( 'wpEditToken', $wgUser->editToken() ) . "\n" .
Html::closeElement( 'form' )
);
}
private function doSubmit() {
global $wgOut, $wgUser, $wgContLang, $wgRequest;
global $wgReadOnlyFile;
if ( ! $wgRequest->getCheck( 'wpLockConfirm' ) ) {
$this->showForm( wfMsg( 'locknoconfirm' ) );
return;
}
$fp = @fopen( $wgReadOnlyFile, 'w' );
if ( false === $fp ) {
# This used to show a file not found error, but the likeliest reason for fopen()
# to fail at this point is insufficient permission to write to the file...good old
# is_writable() is plain wrong in some cases, it seems...
self::notWritable();
return;
}
fwrite( $fp, $this->reason );
fwrite( $fp, "\n<p>(by " . $wgUser->getName() . " at " .
$wgContLang->timeanddate( wfTimestampNow() ) . ")</p>\n" );
fclose( $fp );
$wgOut->redirect( $this->getTitle()->getFullURL( 'action=success' ) );
}
private function showSuccess() {
global $wgOut;
$wgOut->setPagetitle( wfMsg( 'lockdb' ) );
$wgOut->setSubtitle( wfMsg( 'lockdbsuccesssub' ) );
$wgOut->addWikiMsg( 'lockdbsuccesstext' );
}
public static function notWritable() {
global $wgOut;
$wgOut->showErrorPage( 'lockdb', 'lockfilenotwritable' );
}
}
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