first commit

cgi-bin/saveImage.php

@@ -0,0 +1,30 @@
+<?php
+include ("saveGraphHelpers.php");
+
+$name  = $_GET["name"];
+
+if (isValidName($name))
+{
+    $imageFilename = getImageFileName($name);
+    $imageData     = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $_POST['base64data']));
+    
+    if (isset($_GET["x"]) && $_GET["width"] < 4000 && $_GET["height"] < 4000)
+    {
+        $src = imagecreatefromstring($imageData);
+        $dst = imagecreatetruecolor($_GET["width"], $_GET["height"]);
+        imagesavealpha($dst, true);
+        imagealphablending($dst, false);
+        
+        imagecopy($dst, $src, 0, 0, $_GET["x"], $_GET["y"], $_GET["width"], $_GET["height"]);
+        imagepng($dst, $imageFilename);
+    }
+    else
+    {
+        file_put_contents($imageFilename, $imageData);
+    }
+    
+    chmod($imageFilename, 0644);
+    echo ("OK");
+}
+
+?>