moulinette/yunohost_firewall.py
2012-12-18 00:40:13 +01:00

179 lines
3.9 KiB
Python

# -*- coding: utf-8 -*-
import os
import sys
try:
import yaml
except ImportError:
sys.stderr.write('Error: Yunohost CLI Require yaml lib\n')
sys.stderr.write('apt-get install python-yaml\n')
sys.exit(1)
from yunohost import YunoHostError, win_msg
def firewall_allow(protocol=None,port=None,ipv6=None):
"""
Allow port in iptables
Keyword arguments:
protocol -- Protocol used
port -- Port to open
ipv6 -- Boolean ipv6
Return
Dict
"""
if int(port)<65536 and int(port)>0:
if protocol == "Both":
update_yml(port,'tcp','a',ipv6)
update_yml(port,'udp','a',ipv6)
else:
update_yml(port,protocol,'a',ipv6)
win_msg(_("Port successfully openned"))
else:
raise YunoHostError(22,_("Port not between 1 and 65535 : ")+port)
firewall_reload()
return firewall_list()
def firewall_disallow(protocol=None,port=None,ipv6=None):
"""
Disallow port in iptables
Keyword arguments:
protocol -- Protocol used
port -- Port to open
ipv6 -- Boolean ipv6
Return
Dict
"""
if protocol == "Both":
update_yml(port,'tcp','r',ipv6)
update_yml(port,'udp','r',ipv6)
else:
update_yml(port,protocol,'r',ipv6)
win_msg(_("Port successfully closed"))
firewall_reload()
return firewall_list
def firewall_list():
"""
Allow port in iptables
Keyword arguments:
None
Return
Dict
"""
with open ('firewall.yml') as f:
firewall = yaml.load(f)
return firewall
def firewall_reload():
'''
Reload iptables configuration
Keyword arguments:
None
Return
Dict
'''
with open('firewall.yml','r') as f:
firewall = yaml.load(f)
os.system ("iptables -P INPUT ACCEPT")
os.system ("iptables -F")
os.system ("iptables -X")
if '22' not in firewall['ipv4']['TCP']:
update_yml('22','TCP','a',False)
os.system ("ip6tables -P INPUT ACCEPT")
os.system ("ip6tables -F")
os.system ("ip6tables -X")
if '22' not in firewall['ipv6']['TCP']:
update_yml('22','TCP','a',True)
for i,port in enumerate (firewall['ipv4']['TCP']):
os.system ("iptables -A INPUT -p tcp -i eth0 --dport "+ str(port) +" -j ACCEPT")
for i,port in enumerate (firewall['ipv4']['UDP']):
os.system ("iptables -A INPUT -p udp -i eth0 --dport "+ str(port) +" -j ACCEPT")
for i,port in enumerate (firewall['ipv6']['TCP']):
os.system ("ip6tables -A INPUT -p tcp -i eth0 --dport "+ str(port) +" -j ACCEPT")
for i,port in enumerate (firewall['ipv6']['UDP']):
os.system ("ip6tables -A INPUT -p udp -i eth0 --dport "+ str(port) +" -j ACCEPT")
os.system ("iptables -P INPUT DROP")
os.system ("ip6tables -P INPUT DROP")
win_msg(_("Firewall successfully reloaded"))
return firewall_list()
def update_yml(port=None,protocol=None,mode=None,ipv6=None):
"""
Update firewall.yml
Keyword arguments:
protocol -- Protocol used
port -- Port to open
mode -- a=append r=remove
ipv6 -- Boolean ipv6
Return
None
"""
if ipv6:
ip = 'ipv6'
else:
ip = 'ipv4'
with open('firewall.yml','r') as f:
firewall = yaml.load(f)
if mode == 'a':
if port not in firewall[ip][protocol]:
firewall[ip][protocol].append(port)
else:
raise YunoHostError(22,_("Port already openned")+port)
else:
if port in firewall[ip][protocol]:
firewall[ip][protocol].remove(port)
else:
raise YunoHostError(22,_("Port already closed")+port)
firewall[ip][protocol].sort(key=int)
os.system("mv firewall.yml firewall.yml.old")
with open('firewall.yml','w') as f:
yaml.dump(firewall,f)