From 87c7271b298dced2423ba4e7daba8f9db4af91d0 Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@iggdrasil.net>
Date: Wed, 16 May 2018 19:53:11 +0200
Subject: Imports: a web link can be put for images

---
 ishtar_common/utils.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'ishtar_common/utils.py')

diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index 7c77fc3d1..b2ba2bc24 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -23,6 +23,7 @@ from itertools import chain
 import hashlib
 import os
 import random
+import requests
 import shutil
 import subprocess
 import tempfile
@@ -73,6 +74,20 @@ class MultiValueDict(BaseMultiValueDict):
         return lst
 
 
+def is_downloadable(url):
+    """
+    Does the url contain a downloadable resource
+    """
+    h = requests.head(url, allow_redirects=True)
+    header = h.headers
+    content_type = header.get('content-type')
+    if 'text' in content_type.lower():
+        return False
+    if 'html' in content_type.lower():
+        return False
+    return True
+
+
 def get_current_year():
     return datetime.datetime.now().year
 
-- 
cgit v1.2.3