max_space option (issue 2)

config.php

@@ -5,6 +5,7 @@
 
   'base_path'          => "/var/www/piratebox/",
   'base_uri'           => "/",
+  'max_space'          => 80, // in percent
   #'base_uploads'       => "/var/spool/piratebox/public/uploads/",
   #'base_chat'          => "/var/spool/piratebox/public/chat/",
 

controller.php

@@ -177,6 +177,10 @@
     exit('ERR:'.T_("Invalid directory."));
   }
 
+  if(!hasAvailableSpace()) {
+    exit('ERR:'.T_("The file system has reached the maximum limit of space."));
+  }
+
   if(empty($name)) {
     exit('ERR:'.T_("Invalid filename."));
   }
@@ -223,6 +227,10 @@
     exit('ERR:'.T_("Unauthorized."));
   }
 
+  if(!hasAvailableSpace()) {
+    exit('ERR:'.T_("The file system has reached the maximum limit of space."));
+  }
+
   if(empty($cdir) || !is_dir($dirpath)) {
     exit('ERR:'.T_("Invalid directory."));
   }

framework.php

@@ -34,6 +34,7 @@ function configure() {
   option('debug', false);
   option('base_path', $GLOBALS['options']['base_path'].'/');
   option('base_uri', $GLOBALS['options']['base_uri'].'/');
+  option('max_space', $GLOBALS['options']['max_space']);
 
   option('allow_renaming', $GLOBALS['options']['allow_renaming']);
   option('allow_deleting', $GLOBALS['options']['allow_deleting']);

functions.php

@@ -238,3 +238,14 @@ function getFiles($dir, $newfiles = false) {
 
   return $files;
 }
+
+function hasAvailableSpace() {
+  $command = sprintf('df %s | tail -n 1 | awk \'{print $5}\' | sed \'s/%%//\'', escapeshellarg(option('base_path')));
+  $df = shell_exec($command);
+
+  if($df !== null) {
+    return (int) $df < option('max_space');
+  }
+
+  return false;
+}