diff options
Diffstat (limited to 'pkg/linux/bitmask-root')
| -rwxr-xr-x | pkg/linux/bitmask-root | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/pkg/linux/bitmask-root b/pkg/linux/bitmask-root index d1bf656e..1929b51b 100755 --- a/pkg/linux/bitmask-root +++ b/pkg/linux/bitmask-root @@ -51,6 +51,7 @@ cmdcheck = subprocess.check_output ## CONSTANTS ## +VERSION = "1" SCRIPT = "bitmask-root" NAMESERVER = "10.42.0.1" BITMASK_CHAIN = "bitmask" @@ -764,11 +765,13 @@ def firewall_start(args): "--jump", "ACCEPT") # allow multicast Simple Service Discovery Protocol ip4tables("--append", BITMASK_CHAIN, - "--protocol", "udp", "--destination", "239.255.255.250", "--dport", "1900", + "--protocol", "udp", + "--destination", "239.255.255.250", "--dport", "1900", "-o", default_device, "--jump", "RETURN") # allow multicast Bonjour/mDNS ip4tables("--append", BITMASK_CHAIN, - "--protocol", "udp", "--destination", "224.0.0.251", "--dport", "5353", + "--protocol", "udp", + "--destination", "224.0.0.251", "--dport", "5353", "-o", default_device, "--jump", "RETURN") if local_network_ipv6: ip6tables("--append", BITMASK_CHAIN, @@ -776,11 +779,13 @@ def firewall_start(args): "--jump", "ACCEPT") # allow multicast Simple Service Discovery Protocol ip6tables("--append", BITMASK_CHAIN, - "--protocol", "udp", "--destination", "FF05::C", "--dport", "1900", + "--protocol", "udp", + "--destination", "FF05::C", "--dport", "1900", "-o", default_device, "--jump", "RETURN") # allow multicast Bonjour/mDNS ip6tables("--append", BITMASK_CHAIN, - "--protocol", "udp", "--destination", "FF02::FB", "--dport", "5353", + "--protocol", "udp", + "--destination", "FF02::FB", "--dport", "5353", "-o", default_device, "--jump", "RETURN") # allow ipv4 traffic to gateways @@ -791,15 +796,19 @@ def firewall_start(args): # log rejected packets to syslog if DEBUG: iptables("--append", BITMASK_CHAIN, "-o", default_device, - "--jump", "LOG", "--log-prefix", "iptables denied: ", "--log-level", "7") + "--jump", "LOG", "--log-prefix", "iptables denied: ", + "--log-level", "7") - # for now, ensure all other ipv6 packets get rejected (regardless of device) + # for now, ensure all other ipv6 packets get rejected (regardless of + # device) # (not sure why, but "-p any" doesn't work) ip6tables("--append", BITMASK_CHAIN, "-p", "tcp", "--jump", "REJECT") ip6tables("--append", BITMASK_CHAIN, "-p", "udp", "--jump", "REJECT") # reject all other ipv4 sent over the default device - ip4tables("--append", BITMASK_CHAIN, "-o", default_device, "--jump", "REJECT") + ip4tables("--append", BITMASK_CHAIN, "-o", + default_device, "--jump", "REJECT") + def firewall_stop(): """ @@ -819,7 +828,12 @@ def firewall_stop(): def main(): - if len(sys.argv) >= 3: + """ + Entry point for cmdline execution. + """ + # TODO use argparse instead. + + if len(sys.argv) >= 2: command = "_".join(sys.argv[1:3]) args = sys.argv[3:] @@ -828,6 +842,13 @@ def main(): is_restart = True args.remove('restart') + if command == "version": + print(VERSION) + exit(0) + + if os.getuid() != 0: + bail("ERROR: must be run as root") + if command == "openvpn_start": openvpn_start(args) @@ -840,8 +861,8 @@ def main(): nameserver_setter.start(NAMESERVER) except Exception as ex: if not is_restart: - nameserver_restorer.start() - firewall_stop() + nameserver_restorer.start() + firewall_stop() bail("ERROR: could not start firewall", ex) elif command == "firewall_stop": |