firewall: create iptables debug comments

circle/firewall/iptables.py

@@ -16,7 +16,7 @@ class IptRule(object):
 
     def __init__(self, priority=1000, action=None, src=None, dst=None,
                  proto=None, sport=None, dport=None, extra=None,
-                 ipv4_only=False):
+                 ipv4_only=False, comment=None):
         if proto not in ['tcp', 'udp', 'icmp', None]:
             raise InvalidRuleExcepion()
         if proto not in ['tcp', 'udp'] and (sport is not None or
@@ -44,6 +44,7 @@ class IptRule(object):
         self.extra = extra
         self.ipv4_only = (ipv4_only or
                           extra is not None and bool(ipv4_re.search(extra)))
+        self.comment = comment
 
     def __hash__(self):
         return hash(frozenset(self.__dict__.items()))
@@ -67,6 +68,7 @@ class IptRule(object):
                             ('sport', '--sport %s'),
                             ('dport', '--dport %s'),
                             ('extra', '%s'),
+                            ('comment', '-m comment --comment "%s"'),
                             ('action', '-g %s')])
         params = [opts[param] % getattr(self, param)
                   for param in opts

circle/firewall/models.py

@@ -210,6 +210,7 @@ class Rule(models.Model):
         for foreign_vlan in self.foreign_network.vlans.all():
             r = IptRule(priority=self.weight, action=action,
                         proto=self.proto, extra=self.extra,
+                        comment='Rule #%s' % self.pk,
                         src=src, dst=dst, dport=dport, sport=sport)
             # host, hostgroup or vlan rule
             if host or self.vlan_id:

circle/firewall/templates/firewall/iptables.conf

@@ -5,7 +5,7 @@
 :OUTPUT ACCEPT [0:0]
 :POSTROUTING ACCEPT [0:0]
 {% for chain in nat %}
-{{ chain.compile }}
+{{ chain.compile|safe }}
 {% endfor %}
 COMMIT
 {% endif %}
@@ -46,9 +46,9 @@ COMMIT
 {% for chain in filter %}
 {% if chain.name not in chain.builtin_chains %}-N {{ chain.name }}{% endif %}
 {% if proto == "ipv4" %}
-{{ chain.compile }}
+{{ chain.compile|safe }}
 {% else %}
-{{ chain.compile_v6 }}
+{{ chain.compile_v6|safe }}
 {% endif %}
 {% endfor %}