From 9bb48c36eab5e6856b7768c273d382a825f22ff0 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 3 Jun 2010 10:13:28 -0700
Subject: Installer tweak to aid with IIS setup: if config.php exists, but is
 both empty and writable, let the installer proceed and overwrite it.

---
 lib/installer.php | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'lib/installer.php')

diff --git a/lib/installer.php b/lib/installer.php
index 58ffbfef7..7936d5d5d 100644
--- a/lib/installer.php
+++ b/lib/installer.php
@@ -81,9 +81,12 @@ abstract class Installer
     {
         $pass = true;
 
-        if (file_exists(INSTALLDIR.'/config.php')) {
-            $this->warning('Config file "config.php" already exists.');
-            $pass = false;
+        $config = INSTALLDIR.'/config.php';
+        if (file_exists($config)) {
+            if (!is_writable($config) || filesize($config) > 0) {
+                $this->warning('Config file "config.php" already exists.');
+                $pass = false;
+            }
         }
 
         if (version_compare(PHP_VERSION, '5.2.3', '<')) {
-- 
cgit v1.2.3-54-g00ecf