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-rwxr-xr-xsrc/conf_mode/firewall.py117
-rwxr-xr-xsrc/conf_mode/zone_policy.py192
-rwxr-xr-xsrc/migration-scripts/firewall/7-to-812
3 files changed, 85 insertions, 236 deletions
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index f8ad1f798..eeb57bd30 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -48,8 +48,6 @@ airbag.enable()
policy_route_conf_script = '/usr/libexec/vyos/conf_mode/policy-route.py'
nftables_conf = '/run/nftables.conf'
-nftables_zone_conf = '/run/nftables_zone.conf'
-nftables6_zone_conf = '/run/nftables_zone6.conf'
sysfs_config = {
'all_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_all', 'enable': '0', 'disable': '1'},
@@ -87,37 +85,6 @@ snmp_event_source = 1
snmp_trap_mib = 'VYATTA-TRAP-MIB'
snmp_trap_name = 'mgmtEventTrap'
-def get_firewall_zones(conf):
- used_v4 = []
- used_v6 = []
- zone_policy = conf.get_config_dict(['zone-policy'], key_mangling=('-', '_'), get_first_key=True,
- no_tag_node_value_mangle=True)
-
- if 'zone' in zone_policy:
- for zone, zone_conf in zone_policy['zone'].items():
- if 'from' in zone_conf:
- for from_zone, from_conf in zone_conf['from'].items():
- name = dict_search_args(from_conf, 'firewall', 'name')
- if name:
- used_v4.append(name)
-
- ipv6_name = dict_search_args(from_conf, 'firewall', 'ipv6_name')
- if ipv6_name:
- used_v6.append(ipv6_name)
-
- if 'intra_zone_filtering' in zone_conf:
- name = dict_search_args(zone_conf, 'intra_zone_filtering', 'firewall', 'name')
- if name:
- used_v4.append(name)
-
- ipv6_name = dict_search_args(zone_conf, 'intra_zone_filtering', 'firewall', 'ipv6_name')
- if ipv6_name:
- used_v6.append(ipv6_name)
- else:
- return None
-
- return {'name': used_v4, 'ipv6_name': used_v6}
-
def geoip_updated(conf, firewall):
diff = get_config_diff(conf)
node_diff = diff.get_child_nodes_diff(['firewall'], expand_nodes=Diff.DELETE, recursive=True)
@@ -171,6 +138,9 @@ def get_config(config=None):
if tmp in default_values:
del default_values[tmp]
+ if 'zone' in default_values:
+ del default_values['zone']
+
firewall = dict_merge(default_values, firewall)
# Merge in defaults for IPv4 ruleset
@@ -187,8 +157,12 @@ def get_config(config=None):
firewall['ipv6_name'][ipv6_name] = dict_merge(default_values,
firewall['ipv6_name'][ipv6_name])
+ if 'zone' in firewall:
+ default_values = defaults(base + ['zone'])
+ for zone in firewall['zone']:
+ firewall['zone'][zone] = dict_merge(default_values, firewall['zone'][zone])
+
firewall['policy_resync'] = bool('group' in firewall or node_changed(conf, base + ['group']))
- firewall['zone_policy'] = get_firewall_zones(conf)
if 'config_trap' in firewall and firewall['config_trap'] == 'enable':
diff = get_config_diff(conf)
@@ -332,11 +306,61 @@ def verify(firewall):
if ipv6_name and dict_search_args(firewall, 'ipv6_name', ipv6_name) == None:
raise ConfigError(f'Invalid firewall ipv6-name "{ipv6_name}" referenced on interface {ifname}')
- if firewall['zone_policy']:
- for fw_name, used_names in firewall['zone_policy'].items():
- for name in used_names:
- if dict_search_args(firewall, fw_name, name) == None:
- raise ConfigError(f'Firewall {fw_name.replace("_", "-")} "{name}" is still referenced in zone-policy')
+ local_zone = False
+ zone_interfaces = []
+
+ if 'zone' in firewall:
+ for zone, zone_conf in firewall['zone'].items():
+ if 'local_zone' not in zone_conf and 'interface' not in zone_conf:
+ raise ConfigError(f'Zone "{zone}" has no interfaces and is not the local zone')
+
+ if 'local_zone' in zone_conf:
+ if local_zone:
+ raise ConfigError('There cannot be multiple local zones')
+ if 'interface' in zone_conf:
+ raise ConfigError('Local zone cannot have interfaces assigned')
+ if 'intra_zone_filtering' in zone_conf:
+ raise ConfigError('Local zone cannot use intra-zone-filtering')
+ local_zone = True
+
+ if 'interface' in zone_conf:
+ found_duplicates = [intf for intf in zone_conf['interface'] if intf in zone_interfaces]
+
+ if found_duplicates:
+ raise ConfigError(f'Interfaces cannot be assigned to multiple zones')
+
+ zone_interfaces += zone_conf['interface']
+
+ if 'intra_zone_filtering' in zone_conf:
+ intra_zone = zone_conf['intra_zone_filtering']
+
+ if len(intra_zone) > 1:
+ raise ConfigError('Only one intra-zone-filtering action must be specified')
+
+ if 'firewall' in intra_zone:
+ v4_name = dict_search_args(intra_zone, 'firewall', 'name')
+ if v4_name and not dict_search_args(firewall, 'name', v4_name):
+ raise ConfigError(f'Firewall name "{v4_name}" does not exist')
+
+ v6_name = dict_search_args(intra_zone, 'firewall', 'ipv6_name')
+ if v6_name and not dict_search_args(firewall, 'ipv6_name', v6_name):
+ raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
+
+ if not v4_name and not v6_name:
+ raise ConfigError('No firewall names specified for intra-zone-filtering')
+
+ if 'from' in zone_conf:
+ for from_zone, from_conf in zone_conf['from'].items():
+ if from_zone not in firewall['zone']:
+ raise ConfigError(f'Zone "{zone}" refers to a non-existent or deleted zone "{from_zone}"')
+
+ v4_name = dict_search_args(from_conf, 'firewall', 'name')
+ if v4_name and not dict_search_args(firewall, 'name', v4_name):
+ raise ConfigError(f'Firewall name "{v4_name}" does not exist')
+
+ v6_name = dict_search_args(from_conf, 'firewall', 'ipv6_name')
+ if v6_name and not dict_search_args(firewall, 'ipv6_name', v6_name):
+ raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
return None
@@ -344,11 +368,18 @@ def generate(firewall):
if not os.path.exists(nftables_conf):
firewall['first_install'] = True
- if os.path.exists(nftables_zone_conf):
- firewall['zone_conf'] = nftables_zone_conf
+ if 'zone' in firewall:
+ for local_zone, local_zone_conf in firewall['zone'].items():
+ if 'local_zone' not in local_zone_conf:
+ continue
+
+ local_zone_conf['from_local'] = {}
- if os.path.exists(nftables6_zone_conf):
- firewall['zone6_conf'] = nftables6_zone_conf
+ for zone, zone_conf in firewall['zone'].items():
+ if zone == local_zone or 'from' not in zone_conf:
+ continue
+ if local_zone in zone_conf['from']:
+ local_zone_conf['from_local'][zone] = zone_conf['from'][local_zone]
render(nftables_conf, 'firewall/nftables.j2', firewall)
return None
diff --git a/src/conf_mode/zone_policy.py b/src/conf_mode/zone_policy.py
deleted file mode 100755
index c6ab4e304..000000000
--- a/src/conf_mode/zone_policy.py
+++ /dev/null
@@ -1,192 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 2021-2022 VyOS maintainers and contributors
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 or later as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-import os
-
-from json import loads
-from sys import exit
-
-from vyos.config import Config
-from vyos.configdict import dict_merge
-from vyos.configdiff import get_config_diff
-from vyos.template import render
-from vyos.util import cmd
-from vyos.util import dict_search_args
-from vyos.util import run
-from vyos.xml import defaults
-from vyos import ConfigError
-from vyos import airbag
-airbag.enable()
-
-firewall_conf_script = '/usr/libexec/vyos/conf_mode/firewall.py'
-nftables_conf = '/run/nftables_zone.conf'
-nftables6_conf = '/run/nftables_zone6.conf'
-
-def get_config(config=None):
- if config:
- conf = config
- else:
- conf = Config()
- base = ['zone-policy']
- zone_policy = conf.get_config_dict(base, key_mangling=('-', '_'),
- get_first_key=True,
- no_tag_node_value_mangle=True)
-
- zone_policy['firewall'] = conf.get_config_dict(['firewall'],
- key_mangling=('-', '_'),
- get_first_key=True,
- no_tag_node_value_mangle=True)
-
- diff = get_config_diff(conf)
- zone_policy['firewall_changed'] = diff.is_node_changed(['firewall'])
-
- if 'zone' in zone_policy:
- # We have gathered the dict representation of the CLI, but there are default
- # options which we need to update into the dictionary retrived.
- default_values = defaults(base + ['zone'])
- for zone in zone_policy['zone']:
- zone_policy['zone'][zone] = dict_merge(default_values,
- zone_policy['zone'][zone])
-
- return zone_policy
-
-def verify(zone_policy):
- # bail out early - looks like removal from running config
- if not zone_policy:
- return None
-
- local_zone = False
- interfaces = []
-
- if 'zone' in zone_policy:
- for zone, zone_conf in zone_policy['zone'].items():
- if 'local_zone' not in zone_conf and 'interface' not in zone_conf:
- raise ConfigError(f'Zone "{zone}" has no interfaces and is not the local zone')
-
- if 'local_zone' in zone_conf:
- if local_zone:
- raise ConfigError('There cannot be multiple local zones')
- if 'interface' in zone_conf:
- raise ConfigError('Local zone cannot have interfaces assigned')
- if 'intra_zone_filtering' in zone_conf:
- raise ConfigError('Local zone cannot use intra-zone-filtering')
- local_zone = True
-
- if 'interface' in zone_conf:
- found_duplicates = [intf for intf in zone_conf['interface'] if intf in interfaces]
-
- if found_duplicates:
- raise ConfigError(f'Interfaces cannot be assigned to multiple zones')
-
- interfaces += zone_conf['interface']
-
- if 'intra_zone_filtering' in zone_conf:
- intra_zone = zone_conf['intra_zone_filtering']
-
- if len(intra_zone) > 1:
- raise ConfigError('Only one intra-zone-filtering action must be specified')
-
- if 'firewall' in intra_zone:
- v4_name = dict_search_args(intra_zone, 'firewall', 'name')
- if v4_name and not dict_search_args(zone_policy, 'firewall', 'name', v4_name):
- raise ConfigError(f'Firewall name "{v4_name}" does not exist')
-
- v6_name = dict_search_args(intra_zone, 'firewall', 'ipv6-name')
- if v6_name and not dict_search_args(zone_policy, 'firewall', 'ipv6-name', v6_name):
- raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
-
- if not v4_name and not v6_name:
- raise ConfigError('No firewall names specified for intra-zone-filtering')
-
- if 'from' in zone_conf:
- for from_zone, from_conf in zone_conf['from'].items():
- if from_zone not in zone_policy['zone']:
- raise ConfigError(f'Zone "{zone}" refers to a non-existent or deleted zone "{from_zone}"')
-
- v4_name = dict_search_args(from_conf, 'firewall', 'name')
- if v4_name and not dict_search_args(zone_policy, 'firewall', 'name', v4_name):
- raise ConfigError(f'Firewall name "{v4_name}" does not exist')
-
- v6_name = dict_search_args(from_conf, 'firewall', 'v6_name')
- if v6_name and not dict_search_args(zone_policy, 'firewall', 'ipv6_name', v6_name):
- raise ConfigError(f'Firewall ipv6-name "{v6_name}" does not exist')
-
- return None
-
-def has_ipv4_fw(zone_conf):
- if 'from' not in zone_conf:
- return False
- zone_from = zone_conf['from']
- return any([True for fz in zone_from if dict_search_args(zone_from, fz, 'firewall', 'name')])
-
-def has_ipv6_fw(zone_conf):
- if 'from' not in zone_conf:
- return False
- zone_from = zone_conf['from']
- return any([True for fz in zone_from if dict_search_args(zone_from, fz, 'firewall', 'ipv6_name')])
-
-def get_local_from(zone_policy, local_zone_name):
- # Get all zone firewall names from the local zone
- out = {}
- for zone, zone_conf in zone_policy['zone'].items():
- if zone == local_zone_name:
- continue
- if 'from' not in zone_conf:
- continue
- if local_zone_name in zone_conf['from']:
- out[zone] = zone_conf['from'][local_zone_name]
- return out
-
-def generate(zone_policy):
- data = zone_policy or {}
-
- if not os.path.exists(nftables_conf):
- data['first_install'] = True
-
- if 'zone' in data:
- for zone, zone_conf in data['zone'].items():
- zone_conf['ipv4'] = has_ipv4_fw(zone_conf)
- zone_conf['ipv6'] = has_ipv6_fw(zone_conf)
-
- if 'local_zone' in zone_conf:
- zone_conf['from_local'] = get_local_from(data, zone)
-
- render(nftables_conf, 'zone_policy/nftables.j2', data)
- render(nftables6_conf, 'zone_policy/nftables6.j2', data)
- return None
-
-def update_firewall():
- # Update firewall to refresh nftables
- tmp = run(firewall_conf_script)
- if tmp > 0:
- Warning('Failed to update firewall configuration!')
-
-def apply(zone_policy):
- # If firewall will not update in this commit, we need to call the conf script
- if not zone_policy['firewall_changed']:
- update_firewall()
-
- return None
-
-if __name__ == '__main__':
- try:
- c = get_config()
- verify(c)
- generate(c)
- apply(c)
- except ConfigError as e:
- print(e)
- exit(1)
diff --git a/src/migration-scripts/firewall/7-to-8 b/src/migration-scripts/firewall/7-to-8
index 6929e20a5..ce527acf5 100755
--- a/src/migration-scripts/firewall/7-to-8
+++ b/src/migration-scripts/firewall/7-to-8
@@ -15,6 +15,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# T2199: Migrate interface firewall nodes to firewall interfaces <ifname> <direction> name/ipv6-name <name>
+# T2199: Migrate zone-policy to firewall node
import re
@@ -34,9 +35,10 @@ with open(file_name, 'r') as f:
config_file = f.read()
base = ['firewall']
+zone_base = ['zone-policy']
config = ConfigTree(config_file)
-if not config.exists(base):
+if not config.exists(base) and not config.exists(zone_base):
# Nothing to do
exit(0)
@@ -80,6 +82,14 @@ for iftype in config.list_nodes(['interfaces']):
for vifc in config.list_nodes(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
migrate_interface(config, iftype, ifname, vifs=vifs, vifc=vifc)
+if config.exists(zone_base + ['zone']):
+ config.set(['firewall', 'zone'])
+ config.set_tag(['firewall', 'zone'])
+
+ for zone in config.list_nodes(zone_base + ['zone']):
+ config.copy(zone_base + ['zone', zone], ['firewall', 'zone', zone])
+ config.delete(zone_base)
+
try:
with open(file_name, 'w') as f:
f.write(config.to_string())