Deleted book formats remove book from synced to kobo table

updated teststatus

cps/helper.py

@@ -17,18 +17,18 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 
-import sys
 import os
 import io
 import mimetypes
 import re
 import shutil
-import time
+import socket
 import unicodedata
 from datetime import datetime, timedelta
 from tempfile import gettempdir
-
+from urllib.parse import urlparse
 import requests
+
 from babel.dates import format_datetime
 from babel.units import format_unit
 from flask import send_from_directory, make_response, redirect, abort, url_for
@@ -584,10 +584,16 @@ def get_book_cover_internal(book, use_generic_cover_on_failure):
 # saves book cover from url
 def save_cover_from_url(url, book_path):
     try:
+        # 127.0.x.x, localhost, [::1], [::ffff:7f00:1]
+        ip = socket.getaddrinfo(urlparse(url).hostname, 0)[0][4][0]
+        if ip.startswith("127.") or ip.startswith('::ffff:7f') or ip == "::1":
+            log.error("Localhost was accessed for cover upload")
+            return False, _("You are not allowed to access localhost for cover uploads")
         img = requests.get(url, timeout=(10, 200))      # ToDo: Error Handling
         img.raise_for_status()
         return save_cover(img, book_path)
-    except (requests.exceptions.HTTPError,
+    except (socket.gaierror,
+            requests.exceptions.HTTPError,
             requests.exceptions.ConnectionError,
             requests.exceptions.Timeout) as ex:
         log.info(u'Cover Download Error %s', ex)