Add a custom X-CSRFToken header to each XMLHttpRequest to be Django 1…

….3 compatible

Closes #4

overmind/api/test_provisioning.py

@@ -49,7 +49,7 @@ def setUp(self):
         self.p3.save()
 
     def test_not_authenticated(self):
-        '''A non authenticated user should get 401'''
+        """Should get a 401 when the user is not authenticated"""
         # NOTE: Use non-authenticated client
         response = self.client.get(self.path)
         self.assertEquals(response.status_code, 401)

overmind/media/js/main.js

@@ -1,3 +1,41 @@
+$(document).ajaxSend(function(event, xhr, settings) {
+    function getCookie(name) {
+        var cookieValue = null;
+        if (document.cookie && document.cookie != '') {
+            var cookies = document.cookie.split(';');
+            for (var i = 0; i < cookies.length; i++) {
+                var cookie = jQuery.trim(cookies[i]);
+                // Does this cookie string begin with the name we want?
+                if (cookie.substring(0, name.length + 1) == (name + '=')) {
+                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
+                    break;
+                }
+            }
+        }
+        return cookieValue;
+    }
+    function sameOrigin(url) {
+        // url could be relative or scheme relative or absolute
+        var host = document.location.host; // host + port
+        var protocol = document.location.protocol;
+        var sr_origin = '//' + host;
+        var origin = protocol + sr_origin;
+        // Allow absolute or scheme relative URLs to same origin
+        return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
+            (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
+            // or any other URL that isn't scheme relative or absolute i.e relative.
+            !(/^(\/\/|http:|https:).*/.test(url));
+    }
+    function safeMethod(method) {
+        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
+    }
+
+    if (!safeMethod(settings.type) && sameOrigin(settings.url)) {
+        xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken'));
+    }
+});
+
+
 function confirmation(message, target) {
     var answer = confirm(message);
     if (answer){