Give ip2long and long2ip ipv6 support (#271)

Improved ipv6 support in the `ip2long` and `long2ip` helper functions

tests/test_utils.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from tests.helpers import *
+from CTFd.models import ip2long, long2ip
+import json
+
+
+def test_ip2long_ipv4():
+    """Does ip2long work properly for ipv4 addresses"""
+    assert ip2long('127.0.0.1') == 2130706433
+
+
+def test_long2ip_ipv4():
+    """Does long2ip work properly for ipv4 addresses"""
+    assert long2ip(2130706433) == '127.0.0.1'
+
+
+def test_ip2long_ipv6():
+    """Does ip2long work properly for ipv6 addresses"""
+    assert ip2long('2001:0db8:85a3:0000:0000:8a2e:0370:7334') == 42540766452641154071740215577757643572
+    assert ip2long('2001:658:22a:cafe:200::1') == 42540616829182469433547762482097946625
+
+
+def test_long2ip_ipv6():
+    """Does long2ip work properly for ipv6 addresses"""
+    assert long2ip(42540766452641154071740215577757643572) == '2001:db8:85a3::8a2e:370:7334'
+    assert long2ip(42540616829182469433547762482097946625) == '2001:658:22a:cafe:200::1'