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{ python, writeScriptBin, ... }:
let
pythonEnv = python.withPackages (ps: [ ps.netaddr ]);
in
writeScriptBin "cidr2glob" ''
#! ${pythonEnv}/bin/python
import netaddr
import re
import sys
def cidr2glob(cidr):
net = netaddr.IPNetwork(cidr)
if net.prefixlen <= 8:
return map(lambda subnet: re.sub(r'\.0\.0\.0$', '.*', str(subnet.ip)), net.subnet(8))
elif net.prefixlen <= 16:
return map(lambda subnet: re.sub(r'\.0\.0$', '.*', str(subnet.ip)), net.subnet(16))
elif net.prefixlen <= 24:
return map(lambda subnet: re.sub(r'\.0$', '.*', str(subnet.ip)), net.subnet(24))
else:
return map(lambda ip: str(ip), list(net))
if __name__ == "__main__":
for cidr in sys.stdin:
for glob in cidr2glob(cidr):
print glob
''
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