From 2a3a3248def505c64c3f596acefa894959d4a20d Mon Sep 17 00:00:00 2001 From: tv Date: Tue, 12 Dec 2017 21:06:21 +0100 Subject: [PATCH] cidr2glob: init Based on https://gist.github.com/speshak/b62fa28b49377cda8047cb227837244c --- krebs/5pkgs/simple/cidr2glob.nix | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 krebs/5pkgs/simple/cidr2glob.nix diff --git a/krebs/5pkgs/simple/cidr2glob.nix b/krebs/5pkgs/simple/cidr2glob.nix new file mode 100644 index 000000000..9b0b3f86b --- /dev/null +++ b/krebs/5pkgs/simple/cidr2glob.nix @@ -0,0 +1,30 @@ +{ 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 + + ''