Improve error handling for wrong autoloader permissions

Running Composer manually with a user different from the webserver
user and ending up with a vendor/autoload.php file that's unreadable
to MediaWiki seems like an easy mistake to make. Make the error
message when that happens less cryptic.

Change-Id: I52600adceb38a7fc5384d00b5298e46a782c684f

diff --git a/includes/Setup.php b/includes/Setup.php
index 4ebe426..cdbd527 100644 (file)
--- a/includes/Setup.php
+++ b/includes/Setup.php
@@ -67,6 +67,8 @@ require_once "$IP/includes/GlobalFunctions.php";
 // Load composer's autoloader if present
 if ( is_readable( "$IP/vendor/autoload.php" ) ) {
        require_once "$IP/vendor/autoload.php";
+} elseif ( file_exists( "$IP/vendor/autoload.php" ) ) {
+       die( "$IP/vendor/autoload.php exists but is not readable" );
 }
 
 // Assert that composer dependencies were successfully loaded