1 files changed, 131 insertions, 0 deletions
diff --git a/includes/specials/SpecialLockdb.php b/includes/specials/SpecialLockdb.php
new file mode 100644
index 00000000..04019223
--- /dev/null
+++ b/includes/specials/SpecialLockdb.php
@@ -0,0 +1,131 @@
+<?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() );
+
+		$wgOut->addHTML( <<<END
+<form id="lockdb" method="post" action="{$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">{$lc}</td>
+	</tr>
+	<tr>
+		<td>&nbsp;</td>
+		<td align="left">
+			<input type="submit" name="wpLock" value="{$lb}" />
+		</td>
+	</tr>
+</table>
+<input type="hidden" name="wpEditToken" value="{$token}" />
+</form>
+END
+);
+
+	}
+
+	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() ) . ")\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' );
+	}
+}