From 611c3b66f0db3ca113db6fb71534231bb87b4cef Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Thu, 26 Oct 2023 20:15:44 +0200
Subject: ipv6: add support for ipv6 addresses lists (#2113)

---
 utils/google6.py | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 utils/google6.py

(limited to 'utils/google6.py')

diff --git a/utils/google6.py b/utils/google6.py
new file mode 100644
index 000000000..2d9ffa27c
--- /dev/null
+++ b/utils/google6.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import json
+import urllib.request
+import netaddr
+
+GOOG_URL="https://www.gstatic.com/ipranges/goog.json"
+CLOUD_URL="https://www.gstatic.com/ipranges/cloud.json"
+
+def read_url(url):
+   try:
+      s = urllib.request.urlopen(url).read()
+      return json.loads(s)
+   except urllib.error.HTTPError:
+      print("Invalid HTTP response from %s" % url)
+      return {}
+   except json.decoder.JSONDecodeError:
+      print("Could not parse HTTP response from %s" % url)
+      return {}
+
+def main():
+   goog_json=read_url(GOOG_URL)
+   cloud_json=read_url(CLOUD_URL)
+
+   if goog_json and cloud_json:
+#      print("{} published: {}".format(GOOG_URL,goog_json.get('creationTime')))
+#      print("{} published: {}".format(CLOUD_URL,cloud_json.get('creationTime')))
+      goog_cidrs = netaddr.IPSet()
+      for pref in goog_json['prefixes']:
+         if pref.get('ipv6Prefix'):
+            goog_cidrs.add(pref.get('ipv6Prefix'))
+      cloud_cidrs = netaddr.IPSet()
+      for pref in cloud_json['prefixes']:
+         if pref.get('ipv6Prefix'):
+            cloud_cidrs.add(pref.get('ipv6Prefix'))
+#      print("IP ranges for Google APIs and services default domains:")
+      for i in goog_cidrs.difference(cloud_cidrs).iter_cidrs():
+         print(i)
+
+if __name__=='__main__':
+   main()
-- 
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