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#!/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('ipv4Prefix'):
goog_cidrs.add(pref.get('ipv4Prefix'))
cloud_cidrs = netaddr.IPSet()
for pref in cloud_json['prefixes']:
if pref.get('ipv4Prefix'):
cloud_cidrs.add(pref.get('ipv4Prefix'))
# 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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