}
/**
- * Check if the wiki read-only lock file is present. This can be used to lock
- * off editing functions, but doesn't guarantee that the database will not be
- * modified.
+ * Check whether the wiki is in read-only mode.
*
* @return bool
*/
function wfReadOnly() {
- global $wgReadOnlyFile, $wgReadOnly;
-
- if ( !is_null( $wgReadOnly ) ) {
- return (bool)$wgReadOnly;
- }
- if ( $wgReadOnlyFile == '' ) {
- return false;
- }
- // Set $wgReadOnly for faster access next time
- if ( is_file( $wgReadOnlyFile ) ) {
- $wgReadOnly = file_get_contents( $wgReadOnlyFile );
- } else {
- $wgReadOnly = false;
- }
- return (bool)$wgReadOnly;
+ return wfReadOnlyReason() !== false;
}
/**
- * @return bool
+ * Get the value of $wgReadOnly or the contents of $wgReadOnlyFile.
+ *
+ * @return string|bool: String when in read-only mode; false otherwise
*/
function wfReadOnlyReason() {
- global $wgReadOnly;
- wfReadOnly();
+ global $wgReadOnly, $wgReadOnlyFile;
+
+ if ( $wgReadOnly === null ) {
+ // Set $wgReadOnly for faster access next time
+ if ( is_file( $wgReadOnlyFile ) && filesize( $wgReadOnlyFile ) > 0 ) {
+ $wgReadOnly = file_get_contents( $wgReadOnlyFile );
+ } else {
+ $wgReadOnly = false;
+ }
+ }
+
return $wgReadOnly;
}