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#
# Copyright 2008
# Krzysztof A. Adamski <krzysztofa@gmail.com>
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# our modules
from func.minion.modules import func_module
from func.minion.modules.iptables.common import *
IPTABLES_SAVE_FILE = "/etc/sysconfig/iptables"
class Iptables(func_module.FuncModule):
# Update these if need be.
version = "0.0.1"
api_version = "0.0.1"
description = "iptables module"
def run(self, args):
"""
Run 'iptables' command with arguments given. For example:
> func '*' call iptables run "-L INPUT"
"""
return run_iptables(args)
def policy(self, chain="INPUT", policy=None):
"""
Check/set default policy for the chain. Examples:
* Check default policy for INPUT chain:
> func '*' call iptables policy
or
> func '*' call iptables policy INPUT
* Set default policy for OUTPUT:
> func '*' call iptables policy OUTPUT DROP
"""
if policy==None:
return check_policy(chain)
else:
return set_policy(chain, policy)
def flush(self, chain="INPUT"):
"""
Flush the selected chain (or INPUT if none given).
"""
return call_iptables("-F %s" % chain)
def zero(self, chain="INPUT"):
"""
Zero counters in selected chain (or INPUT if none given).
"""
return call_iptables("-Z %s" % chain)
def drop_from(self, ip):
"""
Drop all incomming traffic from IP. Example:
> func '*' call iptables drop_from 192.168.0.10
"""
clear_all("-D INPUT -s %s -j ACCEPT" % ip)
clear_all("-D INPUT -s %s -j REJECT" % ip)
return call_if_policy("INPUT", "ACCEPT", "-I INPUT -s %s -j DROP" % ip)
def reject_from(self, ip):
"""
Reject all incoming traffic from IP. Example:
> func '*' call iptables reject_from 192.168.0.10
"""
clear_all("-D INPUT -s %s -j ACCEPT" % ip)
clear_all("-D INPUT -s %s -j DROP" % ip)
return call_iptables("-I INPUT -s %s -j REJECT" % ip)
def accept_from(self, ip):
"""
Accept all incoming traffic from IP. Example:
> func '*' call iptables accept_from 192.168.0.10
"""
clear_all("-D INPUT -s %s -j DROP" % ip)
clear_all("-D INPUT -s %s -j REJECT" % ip)
return call_if_policy("INPUT", "DROP", "-I INPUT -s %s -j ACCEPT" % ip)
def drop_to(self, ip):
"""
Drop all outgoing traffic to IP. Example:
> func '*' call iptables drop_to 192.168.0.10
"""
clear_all("-D OUTPUT -d %s -j ACCEPT" % ip)
clear_all("-D OUTPUT -d %s -j REJECT" % ip)
return call_if_policy("INPUT", "ACCEPT", "-I OUTPUT -d %s -j DROP" % ip)
def reject_to(self, ip):
"""
Drop all outgoing traffic to IP. Example:
> func '*' call iptables reject_to 192.168.0.10
"""
clear_all("-D OUTPUT -d %s -j ACCEPT" % ip)
clear_all("-D OUTPUT -d %s -j DROP" % ip)
return call_iptables("-I OUTPUT -d %s -j REJECT" % ip)
def accept_to(self, ip):
"""
Accept all outgoing traffic to IP. Example:
> func '*' call iptables accept_to 192.168.0.10
"""
clear_all("-D OUTPUT -d %s -j DROP" % ip)
clear_all("-D OUTPUT -d %s -j REJECT" % ip)
return call_if_policy("INPUT", "DROP", "-I OUTPUT -d %s -j ACCEPT" % ip)
def inventory(self):
return self.dump()
def dump(self, counters=False):
"""
Dump iptables configuration in iptables-save format.
"""
args = []
if counters:
args.append("-c")
cmd = sub_process.Popen(["/sbin/iptables-save"] + args,
executable="/sbin/iptables-save",
stdout=sub_process.PIPE,
stderr=sub_process.PIPE,
shell=False)
data, error = cmd.communicate()
return data
def save(self, counters=False):
"""
Save iptables state using '/sbin/iptables-save'. If counters=True,
save counters too.
TODO: maybe some locking?
"""
f=open(IPTABLES_SAVE_FILE, 'w')
f.write(self.dump(counters))
f.close
return True
def panic(self):
self.flush("")
self.policy("INPUT", "DROP")
self.policy("OUTPUT", "DROP")
self.policy("FORWARD", "DROP")
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