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<?php
/**
* @file
* @ingroup SpecialPage
*/
/**
* Constructor
*/
function wfSpecialLockdb() {
global $wgUser, $wgOut, $wgRequest;
if( !$wgUser->isAllowed( 'siteadmin' ) ) {
$wgOut->permissionRequired( 'siteadmin' );
return;
}
# If the lock file isn't writable, we can do sweet bugger all
global $wgReadOnlyFile;
if( !is_writable( dirname( $wgReadOnlyFile ) ) ) {
DBLockForm::notWritable();
return;
}
$action = $wgRequest->getVal( 'action' );
$f = new DBLockForm();
if ( 'success' == $action ) {
$f->showSuccess();
} else if ( 'submit' == $action && $wgRequest->wasPosted() &&
$wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ) ) ) {
$f->doSubmit();
} else {
$f->showForm( '' );
}
}
/**
* A form to make the database readonly (eg for maintenance purposes).
* @ingroup SpecialPage
*/
class DBLockForm {
var $reason = '';
function DBLockForm() {
global $wgRequest;
$this->reason = $wgRequest->getText( 'wpLockReason' );
}
function showForm( $err ) {
global $wgOut, $wgUser;
$wgOut->setPagetitle( wfMsg( 'lockdb' ) );
$wgOut->addWikiMsg( 'lockdbtext' );
if ( $err != "" ) {
$wgOut->setSubtitle( wfMsg( 'formerror' ) );
$wgOut->addHTML( '<p class="error">' . htmlspecialchars( $err ) . "</p>\n" );
}
$lc = htmlspecialchars( wfMsg( 'lockconfirm' ) );
$lb = htmlspecialchars( wfMsg( 'lockbtn' ) );
$elr = htmlspecialchars( wfMsg( 'enterlockreason' ) );
$titleObj = SpecialPage::getTitleFor( 'Lockdb' );
$action = $titleObj->escapeLocalURL( 'action=submit' );
$reason = htmlspecialchars( $this->reason );
$token = htmlspecialchars( $wgUser->editToken() );
$wgOut->addHTML( <<<HTML
<form id="lockdb" method="post" action="{$action}">
{$elr}:
<textarea name="wpLockReason" rows="10" cols="60" wrap="virtual">{$reason}</textarea>
<table border="0">
<tr>
<td align="right">
<input type="checkbox" name="wpLockConfirm" />
</td>
<td align="left">{$lc}</td>
</tr>
<tr>
<td> </td>
<td align="left">
<input type="submit" name="wpLock" value="{$lb}" />
</td>
</tr>
</table>
<input type="hidden" name="wpEditToken" value="{$token}" />
</form>
HTML
);
}
function doSubmit() {
global $wgOut, $wgUser, $wgLang, $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 " .
$wgLang->timeanddate( wfTimestampNow() ) . ")</p>\n" );
fclose( $fp );
$titleObj = SpecialPage::getTitleFor( 'Lockdb' );
$wgOut->redirect( $titleObj->getFullURL( 'action=success' ) );
}
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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