Only perform a HEAD check instead of fetching an entire file to check…

… its existence

app/Tdt/Core/DataControllers/CSVController.php

@@ -175,7 +175,6 @@ public function readData($source_definition, $rest_parameters = array())
                 }
             }
             fclose($handle);
-
         } else {
             \App::abort(500, "Cannot retrieve any data from the CSV file on location $uri.");
         }

app/Tdt/Core/Validators/CustomValidator.php

@@ -10,17 +10,18 @@
  */
 class CustomValidator extends \Illuminate\Validation\Validator
 {
-
     /**
      * Check if the URI can be resolved externally or locally
      */
     public function validateUri($attribute, $value, $parameters)
     {
         try {
-            if (!filter_var($value, FILTER_VALIDATE_URL) === false) {
-                $data = $this->getRemoteData($value);
+            $url_pieces = parse_url($value);
 
-                return !empty($data);
+            if (!filter_var($value, FILTER_VALIDATE_URL) === false && ($url_pieces['scheme'] == 'http' || $url_pieces['scheme'] == 'https')) {
+                $status = $this->getHeadInfo($value);
+
+                return $status == 200;
             } else {
                 $data =@ file_get_contents($value);
 
@@ -31,6 +32,31 @@ public function validateUri($attribute, $value, $parameters)
         }
     }
 
+    private function getHeadInfo($uri)
+    {
+        $c = curl_init();
+        curl_setopt($c, CURLOPT_URL, $uri);
+        curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
+
+        curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);
+        curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
+
+        curl_setopt($c, CURLOPT_CONNECTTIMEOUT, 9);
+        curl_setopt($c, CURLOPT_TIMEOUT, 60);
+        curl_setopt($c, CURLOPT_CUSTOMREQUEST, 'HEAD');
+        curl_setopt($c, CURLOPT_NOBODY, true);
+
+        curl_exec($c);
+        $status = curl_getinfo($c);
+        curl_close($c);
+
+        if (!empty($status['http_code'])) {
+            return $status['http_code'];
+        } else {
+            return 500;
+        }
+    }
+
     private function getRemoteData($url)
     {
         $c = curl_init();