graph: add configurable limit to graph width/height

Closes: https://github.com/pommi/CGP/pull/34

1 files changed, 5 insertions, 0 deletions

diff --git a/graph.php b/graph.php
index 37e442a..d170a6c 100644
--- a/graph.php
+++ b/graph.php
@@ -17,6 +17,11 @@ if (!file_exists($CONFIG['webdir'].'/plugin/'.$plugin.'.php')) {
         error_image();
 }
 
+if ($width > $CONFIG['max-width'] || $height > $CONFIG['max-height']) {
+        error_log('Resquested image is too large. Please configure max-width and max-height.');
+        error_image();
+}
+
 # load plugin
 include $CONFIG['webdir'].'/plugin/'.$plugin.'.php';