if base url changes radically, save the change.

diff --git a/boot.php b/boot.php
index 1d7135b296c7a5879cf233e20dfeabf5255e27f1..f8a8c9f939694f9105ff540b395dbdde5a1e8b20 100644 (file)
--- a/boot.php
+++ b/boot.php
@@ -437,15 +437,18 @@ function check_config(&$a) {
 
        load_config('system');
 
-       if(! x($_SERVER,'SERVER_NAME'))
-               return;
-
        $build = get_config('system','build');
        if(! x($build))
                $build = set_config('system','build',DB_UPDATE_VERSION);
 
        $url = get_config('system','url');
-       if(! x($url))
+
+       // if the url isn't set or the stored url is radically different 
+       // than the currently visited url, store the current value accordingly.
+       // "Radically different" ignores common variations such as http vs https 
+       // and www.example.com vs example.com.
+
+       if((! x($url)) || (! link_compare($url,$a->get_baseurl())))
                $url = set_config('system','url',$a->get_baseurl());
 
        if($build != DB_UPDATE_VERSION) {