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-rw-r--r--data/templates/firewall/nftables-defines.j28
-rw-r--r--data/templates/firewall/nftables-nat.j24
-rw-r--r--data/templates/firewall/nftables.j214
-rw-r--r--interface-definitions/firewall.xml.in25
-rw-r--r--interface-definitions/include/firewall/fqdn.xml.i14
-rw-r--r--interface-definitions/include/firewall/source-destination-group-ipv6.xml.i8
-rw-r--r--interface-definitions/include/nat-rule.xml.i2
-rw-r--r--python/vyos/firewall.py92
-rw-r--r--python/vyos/nat.py56
-rwxr-xr-xsmoketest/scripts/cli/test_firewall.py16
-rwxr-xr-xsmoketest/scripts/cli/test_nat.py35
-rwxr-xr-xsrc/conf_mode/firewall.py74
-rwxr-xr-xsrc/conf_mode/nat.py73
-rwxr-xr-xsrc/helpers/vyos-domain-group-resolve.py60
-rwxr-xr-xsrc/helpers/vyos-domain-resolver.py183
-rw-r--r--src/systemd/vyos-domain-group-resolve.service11
-rw-r--r--src/systemd/vyos-domain-resolver.service13
17 files changed, 498 insertions, 190 deletions
diff --git a/data/templates/firewall/nftables-defines.j2 b/data/templates/firewall/nftables-defines.j2
index 5336f7ee6..dd06dee28 100644
--- a/data/templates/firewall/nftables-defines.j2
+++ b/data/templates/firewall/nftables-defines.j2
@@ -27,6 +27,14 @@
}
{% endfor %}
{% endif %}
+{% if group.domain_group is vyos_defined %}
+{% for name, name_config in group.domain_group.items() %}
+ set D_{{ name }} {
+ type {{ ip_type }}
+ flags interval
+ }
+{% endfor %}
+{% endif %}
{% if group.mac_group is vyos_defined %}
{% for group_name, group_conf in group.mac_group.items() %}
{% set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
diff --git a/data/templates/firewall/nftables-nat.j2 b/data/templates/firewall/nftables-nat.j2
index c5c0a2c86..f0be3cf5d 100644
--- a/data/templates/firewall/nftables-nat.j2
+++ b/data/templates/firewall/nftables-nat.j2
@@ -1,5 +1,7 @@
#!/usr/sbin/nft -f
+{% import 'firewall/nftables-defines.j2' as group_tmpl %}
+
{% if helper_functions is vyos_defined('remove') %}
{# NAT if going to be disabled - remove rules and targets from nftables #}
{% set base_command = 'delete rule ip raw' %}
@@ -59,5 +61,7 @@ table ip vyos_nat {
chain VYOS_PRE_SNAT_HOOK {
return
}
+
+{{ group_tmpl.groups(firewall_group, False) }}
}
{% endif %}
diff --git a/data/templates/firewall/nftables.j2 b/data/templates/firewall/nftables.j2
index a0f0b8c11..2c7115134 100644
--- a/data/templates/firewall/nftables.j2
+++ b/data/templates/firewall/nftables.j2
@@ -67,14 +67,12 @@ table ip vyos_filter {
{{ conf | nft_default_rule(name_text) }}
}
{% endfor %}
-{% if group is vyos_defined and group.domain_group is vyos_defined %}
-{% for name, name_config in group.domain_group.items() %}
- set D_{{ name }} {
+{% for set_name in ip_fqdn %}
+ set FQDN_{{ set_name }} {
type ipv4_addr
flags interval
}
-{% endfor %}
-{% endif %}
+{% endfor %}
{% for set_name in ns.sets %}
set RECENT_{{ set_name }} {
type ipv4_addr
@@ -178,6 +176,12 @@ table ip6 vyos_filter {
{{ conf | nft_default_rule(name_text, ipv6=True) }}
}
{% endfor %}
+{% for set_name in ip6_fqdn %}
+ set FQDN_{{ set_name }} {
+ type ipv6_addr
+ flags interval
+ }
+{% endfor %}
{% for set_name in ns.sets %}
set RECENT6_{{ set_name }} {
type ipv6_addr
diff --git a/interface-definitions/firewall.xml.in b/interface-definitions/firewall.xml.in
index c8685a187..2ebce79e5 100644
--- a/interface-definitions/firewall.xml.in
+++ b/interface-definitions/firewall.xml.in
@@ -126,7 +126,7 @@
<description>Domain address to match</description>
</valueHelp>
<constraint>
- <regex>[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,99}?(\/.*)?</regex>
+ <validator name="fqdn"/>
</constraint>
<multi/>
</properties>
@@ -408,6 +408,7 @@
</properties>
<children>
#include <include/firewall/address-ipv6.xml.i>
+ #include <include/firewall/fqdn.xml.i>
#include <include/firewall/geoip.xml.i>
#include <include/firewall/source-destination-group-ipv6.xml.i>
#include <include/firewall/port.xml.i>
@@ -419,6 +420,7 @@
</properties>
<children>
#include <include/firewall/address-ipv6.xml.i>
+ #include <include/firewall/fqdn.xml.i>
#include <include/firewall/geoip.xml.i>
#include <include/firewall/source-destination-group-ipv6.xml.i>
#include <include/firewall/port.xml.i>
@@ -572,6 +574,7 @@
</properties>
<children>
#include <include/firewall/address.xml.i>
+ #include <include/firewall/fqdn.xml.i>
#include <include/firewall/geoip.xml.i>
#include <include/firewall/source-destination-group.xml.i>
#include <include/firewall/port.xml.i>
@@ -583,6 +586,7 @@
</properties>
<children>
#include <include/firewall/address.xml.i>
+ #include <include/firewall/fqdn.xml.i>
#include <include/firewall/geoip.xml.i>
#include <include/firewall/source-destination-group.xml.i>
#include <include/firewall/port.xml.i>
@@ -656,6 +660,25 @@
</properties>
<defaultValue>disable</defaultValue>
</leafNode>
+ <leafNode name="resolver-cache">
+ <properties>
+ <help>Retains last successful value if domain resolution fails</help>
+ <valueless/>
+ </properties>
+ </leafNode>
+ <leafNode name="resolver-interval">
+ <properties>
+ <help>Domain resolver update interval</help>
+ <valueHelp>
+ <format>u32:10-3600</format>
+ <description>Interval (seconds)</description>
+ </valueHelp>
+ <constraint>
+ <validator name="numeric" argument="--range 10-3600"/>
+ </constraint>
+ </properties>
+ <defaultValue>300</defaultValue>
+ </leafNode>
<leafNode name="send-redirects">
<properties>
<help>Policy for sending IPv4 ICMP redirect messages</help>
diff --git a/interface-definitions/include/firewall/fqdn.xml.i b/interface-definitions/include/firewall/fqdn.xml.i
new file mode 100644
index 000000000..9eb3925b5
--- /dev/null
+++ b/interface-definitions/include/firewall/fqdn.xml.i
@@ -0,0 +1,14 @@
+<!-- include start from firewall/fqdn.xml.i -->
+<leafNode name="fqdn">
+ <properties>
+ <help>Fully qualified domain name</help>
+ <valueHelp>
+ <format>&lt;fqdn&gt;</format>
+ <description>Fully qualified domain name</description>
+ </valueHelp>
+ <constraint>
+ <validator name="fqdn"/>
+ </constraint>
+ </properties>
+</leafNode>
+<!-- include end -->
diff --git a/interface-definitions/include/firewall/source-destination-group-ipv6.xml.i b/interface-definitions/include/firewall/source-destination-group-ipv6.xml.i
index c2cc7edb3..2a42d236c 100644
--- a/interface-definitions/include/firewall/source-destination-group-ipv6.xml.i
+++ b/interface-definitions/include/firewall/source-destination-group-ipv6.xml.i
@@ -12,6 +12,14 @@
</completionHelp>
</properties>
</leafNode>
+ <leafNode name="domain-group">
+ <properties>
+ <help>Group of domains</help>
+ <completionHelp>
+ <path>firewall group domain-group</path>
+ </completionHelp>
+ </properties>
+ </leafNode>
#include <include/firewall/mac-group.xml.i>
<leafNode name="network-group">
<properties>
diff --git a/interface-definitions/include/nat-rule.xml.i b/interface-definitions/include/nat-rule.xml.i
index 84941aa6a..8f2029388 100644
--- a/interface-definitions/include/nat-rule.xml.i
+++ b/interface-definitions/include/nat-rule.xml.i
@@ -20,6 +20,7 @@
<children>
#include <include/nat-address.xml.i>
#include <include/nat-port.xml.i>
+ #include <include/firewall/source-destination-group.xml.i>
</children>
</node>
#include <include/generic-disable-node.xml.i>
@@ -285,6 +286,7 @@
<children>
#include <include/nat-address.xml.i>
#include <include/nat-port.xml.i>
+ #include <include/firewall/source-destination-group.xml.i>
</children>
</node>
</children>
diff --git a/python/vyos/firewall.py b/python/vyos/firewall.py
index 4075e55b0..59ec4948f 100644
--- a/python/vyos/firewall.py
+++ b/python/vyos/firewall.py
@@ -20,6 +20,9 @@ import os
import re
from pathlib import Path
+from socket import AF_INET
+from socket import AF_INET6
+from socket import getaddrinfo
from time import strftime
from vyos.remote import download
@@ -31,65 +34,31 @@ from vyos.util import dict_search_args
from vyos.util import dict_search_recursive
from vyos.util import run
+# Domain Resolver
-# Functions for firewall group domain-groups
-def get_ips_domains_dict(list_domains):
- """
- Get list of IPv4 addresses by list of domains
- Ex: get_ips_domains_dict(['ex1.com', 'ex2.com'])
- {'ex1.com': ['192.0.2.1'], 'ex2.com': ['192.0.2.2', '192.0.2.3']}
- """
- from socket import gethostbyname_ex
- from socket import gaierror
-
- ip_dict = {}
- for domain in list_domains:
- try:
- _, _, ips = gethostbyname_ex(domain)
- ip_dict[domain] = ips
- except gaierror:
- pass
-
- return ip_dict
-
-def nft_init_set(group_name, table="vyos_filter", family="ip"):
- """
- table ip vyos_filter {
- set GROUP_NAME
- type ipv4_addr
- flags interval
- }
- """
- return call(f'nft add set ip {table} {group_name} {{ type ipv4_addr\\; flags interval\\; }}')
-
-
-def nft_add_set_elements(group_name, elements, table="vyos_filter", family="ip"):
- """
- table ip vyos_filter {
- set GROUP_NAME {
- type ipv4_addr
- flags interval
- elements = { 192.0.2.1, 192.0.2.2 }
- }
- """
- elements = ", ".join(elements)
- return call(f'nft add element {family} {table} {group_name} {{ {elements} }} ')
-
-def nft_flush_set(group_name, table="vyos_filter", family="ip"):
- """
- Flush elements of nft set
- """
- return call(f'nft flush set {family} {table} {group_name}')
-
-def nft_update_set_elements(group_name, elements, table="vyos_filter", family="ip"):
- """
- Update elements of nft set
- """
- flush_set = nft_flush_set(group_name, table="vyos_filter", family="ip")
- nft_add_set = nft_add_set_elements(group_name, elements, table="vyos_filter", family="ip")
- return flush_set, nft_add_set
-
-# END firewall group domain-group (sets)
+def fqdn_config_parse(firewall):
+ firewall['ip_fqdn'] = {}
+ firewall['ip6_fqdn'] = {}
+
+ for domain, path in dict_search_recursive(firewall, 'fqdn'):
+ fw_name = path[1] # name/ipv6-name
+ rule = path[3] # rule id
+ suffix = path[4][0] # source/destination (1 char)
+ set_name = f'{fw_name}_{rule}_{suffix}'
+
+ if path[0] == 'name':
+ firewall['ip_fqdn'][set_name] = domain
+ elif path[0] == 'ipv6_name':
+ firewall['ip6_fqdn'][set_name] = domain
+
+def fqdn_resolve(fqdn, ipv6=False):
+ try:
+ res = getaddrinfo(fqdn, None, AF_INET6 if ipv6 else AF_INET)
+ return set(item[4][0] for item in res)
+ except:
+ return None
+
+# End Domain Resolver
def find_nftables_rule(table, chain, rule_matches=[]):
# Find rule in table/chain that matches all criteria and return the handle
@@ -151,6 +120,13 @@ def parse_rule(rule_conf, fw_name, rule_id, ip_name):
suffix = f'!= {suffix[1:]}'
output.append(f'{ip_name} {prefix}addr {suffix}')
+ if 'fqdn' in side_conf:
+ fqdn = side_conf['fqdn']
+ operator = ''
+ if fqdn[0] == '!':
+ operator = '!='
+ output.append(f'{ip_name} {prefix}addr {operator} @FQDN_{fw_name}_{rule_id}_{prefix}')
+
if dict_search_args(side_conf, 'geoip', 'country_code'):
operator = ''
if dict_search_args(side_conf, 'geoip', 'inverse_match') != None:
diff --git a/python/vyos/nat.py b/python/vyos/nat.py
index 31bbdc386..3d01829a7 100644
--- a/python/vyos/nat.py
+++ b/python/vyos/nat.py
@@ -85,8 +85,13 @@ def parse_nat_rule(rule_conf, rule_id, nat_type, ipv6=False):
translation_str += f' {",".join(options)}'
for target in ['source', 'destination']:
+ if target not in rule_conf:
+ continue
+
+ side_conf = rule_conf[target]
prefix = target[:1]
- addr = dict_search_args(rule_conf, target, 'address')
+
+ addr = dict_search_args(side_conf, 'address')
if addr and not (ignore_type_addr and target == nat_type):
operator = ''
if addr[:1] == '!':
@@ -94,7 +99,7 @@ def parse_nat_rule(rule_conf, rule_id, nat_type, ipv6=False):
addr = addr[1:]
output.append(f'{ip_prefix} {prefix}addr {operator} {addr}')
- addr_prefix = dict_search_args(rule_conf, target, 'prefix')
+ addr_prefix = dict_search_args(side_conf, 'prefix')
if addr_prefix and ipv6:
operator = ''
if addr_prefix[:1] == '!':
@@ -102,7 +107,7 @@ def parse_nat_rule(rule_conf, rule_id, nat_type, ipv6=False):
addr_prefix = addr[1:]
output.append(f'ip6 {prefix}addr {operator} {addr_prefix}')
- port = dict_search_args(rule_conf, target, 'port')
+ port = dict_search_args(side_conf, 'port')
if port:
protocol = rule_conf['protocol']
if protocol == 'tcp_udp':
@@ -113,6 +118,51 @@ def parse_nat_rule(rule_conf, rule_id, nat_type, ipv6=False):
port = port[1:]
output.append(f'{protocol} {prefix}port {operator} {{ {port} }}')
+ if 'group' in side_conf:
+ group = side_conf['group']
+ if 'address_group' in group and not (ignore_type_addr and target == nat_type):
+ group_name = group['address_group']
+ operator = ''
+ if group_name[0] == '!':
+ operator = '!='
+ group_name = group_name[1:]
+ output.append(f'{ip_prefix} {prefix}addr {operator} @A_{group_name}')
+ # Generate firewall group domain-group
+ elif 'domain_group' in group and not (ignore_type_addr and target == nat_type):
+ group_name = group['domain_group']
+ operator = ''
+ if group_name[0] == '!':
+ operator = '!='
+ group_name = group_name[1:]
+ output.append(f'{ip_prefix} {prefix}addr {operator} @D_{group_name}')
+ elif 'network_group' in group and not (ignore_type_addr and target == nat_type):
+ group_name = group['network_group']
+ operator = ''
+ if group_name[0] == '!':
+ operator = '!='
+ group_name = group_name[1:]
+ output.append(f'{ip_prefix} {prefix}addr {operator} @N_{group_name}')
+ if 'mac_group' in group:
+ group_name = group['mac_group']
+ operator = ''
+ if group_name[0] == '!':
+ operator = '!='
+ group_name = group_name[1:]
+ output.append(f'ether {prefix}addr {operator} @M_{group_name}')
+ if 'port_group' in group:
+ proto = rule_conf['protocol']
+ group_name = group['port_group']
+
+ if proto == 'tcp_udp':
+ proto = 'th'
+
+ operator = ''
+ if group_name[0] == '!':
+ operator = '!='
+ group_name = group_name[1:]
+
+ output.append(f'{proto} {prefix}port {operator} @P_{group_name}')
+
output.append('counter')
if 'log' in rule_conf:
diff --git a/smoketest/scripts/cli/test_firewall.py b/smoketest/scripts/cli/test_firewall.py
index 821925bcd..e172e086d 100755
--- a/smoketest/scripts/cli/test_firewall.py
+++ b/smoketest/scripts/cli/test_firewall.py
@@ -17,11 +17,13 @@
import unittest
from glob import glob
+from time import sleep
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.util import cmd
+from vyos.util import run
sysfs_config = {
'all_ping': {'sysfs': '/proc/sys/net/ipv4/icmp_echo_ignore_all', 'default': '0', 'test_value': 'disable'},
@@ -76,6 +78,17 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase):
break
self.assertTrue(not matched if inverse else matched, msg=search)
+ def wait_for_domain_resolver(self, table, set_name, element, max_wait=10):
+ # Resolver no longer blocks commit, need to wait for daemon to populate set
+ count = 0
+ while count < max_wait:
+ code = run(f'sudo nft get element {table} {set_name} {{ {element} }}')
+ if code == 0:
+ return True
+ count += 1
+ sleep(1)
+ return False
+
def test_geoip(self):
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'action', 'drop'])
self.cli_set(['firewall', 'name', 'smoketest', 'rule', '1', 'source', 'geoip', 'country-code', 'se'])
@@ -125,6 +138,9 @@ class TestFirewall(VyOSUnitTestSHIM.TestCase):
self.cli_set(['firewall', 'interface', 'eth0', 'in', 'name', 'smoketest'])
self.cli_commit()
+
+ self.wait_for_domain_resolver('ip vyos_filter', 'D_smoketest_domain', '192.0.2.5')
+
nftables_search = [
['iifname "eth0"', 'jump NAME_smoketest'],
['ip saddr @N_smoketest_network', 'ip daddr 172.16.10.10', 'th dport @P_smoketest_port', 'return'],
diff --git a/smoketest/scripts/cli/test_nat.py b/smoketest/scripts/cli/test_nat.py
index 2ae90fcaf..9f4e3b831 100755
--- a/smoketest/scripts/cli/test_nat.py
+++ b/smoketest/scripts/cli/test_nat.py
@@ -58,6 +58,17 @@ class TestNAT(VyOSUnitTestSHIM.TestCase):
break
self.assertTrue(not matched if inverse else matched, msg=search)
+ def wait_for_domain_resolver(self, table, set_name, element, max_wait=10):
+ # Resolver no longer blocks commit, need to wait for daemon to populate set
+ count = 0
+ while count < max_wait:
+ code = run(f'sudo nft get element {table} {set_name} {{ {element} }}')
+ if code == 0:
+ return True
+ count += 1
+ sleep(1)
+ return False
+
def test_snat(self):
rules = ['100', '110', '120', '130', '200', '210', '220', '230']
outbound_iface_100 = 'eth0'
@@ -84,6 +95,30 @@ class TestNAT(VyOSUnitTestSHIM.TestCase):
self.verify_nftables(nftables_search, 'ip vyos_nat')
+ def test_snat_groups(self):
+ address_group = 'smoketest_addr'
+ address_group_member = '192.0.2.1'
+ rule = '100'
+ outbound_iface = 'eth0'
+
+ self.cli_set(['firewall', 'group', 'address-group', address_group, 'address', address_group_member])
+
+ self.cli_set(src_path + ['rule', rule, 'source', 'group', 'address-group', address_group])
+ self.cli_set(src_path + ['rule', rule, 'outbound-interface', outbound_iface])
+ self.cli_set(src_path + ['rule', rule, 'translation', 'address', 'masquerade'])
+
+ self.cli_commit()
+
+ nftables_search = [
+ [f'set A_{address_group}'],
+ [f'elements = {{ {address_group_member} }}'],
+ [f'ip saddr @A_{address_group}', f'oifname "{outbound_iface}"', 'masquerade']
+ ]
+
+ self.verify_nftables(nftables_search, 'ip vyos_nat')
+
+ self.cli_delete(['firewall'])
+
def test_dnat(self):
rules = ['100', '110', '120', '130', '200', '210', '220', '230']
inbound_iface_100 = 'eth0'
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index cbd9cbe90..783adec46 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -27,12 +27,8 @@ from vyos.configdict import dict_merge
from vyos.configdict import node_changed
from vyos.configdiff import get_config_diff, Diff
# from vyos.configverify import verify_interface_exists
+from vyos.firewall import fqdn_config_parse
from vyos.firewall import geoip_update
-from vyos.firewall import get_ips_domains_dict
-from vyos.firewall import nft_add_set_elements
-from vyos.firewall import nft_flush_set
-from vyos.firewall import nft_init_set
-from vyos.firewall import nft_update_set_elements
from vyos.template import render
from vyos.util import call
from vyos.util import cmd
@@ -45,6 +41,7 @@ from vyos import ConfigError
from vyos import airbag
airbag.enable()
+nat_conf_script = '/usr/libexec/vyos/conf_mode/nat.py'
policy_route_conf_script = '/usr/libexec/vyos/conf_mode/policy-route.py'
nftables_conf = '/run/nftables.conf'
@@ -162,7 +159,7 @@ def get_config(config=None):
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['group_resync'] = bool('group' in firewall or node_changed(conf, base + ['group']))
if 'config_trap' in firewall and firewall['config_trap'] == 'enable':
diff = get_config_diff(conf)
@@ -173,6 +170,8 @@ def get_config(config=None):
firewall['geoip_updated'] = geoip_updated(conf, firewall)
+ fqdn_config_parse(firewall)
+
return firewall
def verify_rule(firewall, rule_conf, ipv6):
@@ -232,29 +231,28 @@ def verify_rule(firewall, rule_conf, ipv6):
if side in rule_conf:
side_conf = rule_conf[side]
- if dict_search_args(side_conf, 'geoip', 'country_code'):
- if 'address' in side_conf:
- raise ConfigError('Address and GeoIP cannot both be defined')
-
- if dict_search_args(side_conf, 'group', 'address_group'):
- raise ConfigError('Address-group and GeoIP cannot both be defined')
-
- if dict_search_args(side_conf, 'group', 'network_group'):
- raise ConfigError('Network-group and GeoIP cannot both be defined')
+ if len({'address', 'fqdn', 'geoip'} & set(side_conf)) > 1:
+ raise ConfigError('Only one of address, fqdn or geoip can be specified')
if 'group' in side_conf:
- if {'address_group', 'network_group'} <= set(side_conf['group']):
- raise ConfigError('Only one address-group or network-group can be specified')
+ if len({'address_group', 'network_group', 'domain_group'} & set(side_conf['group'])) > 1:
+ raise ConfigError('Only one address-group, network-group or domain-group can be specified')
for group in valid_groups:
if group in side_conf['group']:
group_name = side_conf['group'][group]
+ fw_group = f'ipv6_{group}' if ipv6 and group in ['address_group', 'network_group'] else group
+ error_group = fw_group.replace("_", "-")
+
+ if group in ['address_group', 'network_group', 'domain_group']:
+ types = [t for t in ['address', 'fqdn', 'geoip'] if t in side_conf]
+ if types:
+ raise ConfigError(f'{error_group} and {types[0]} cannot both be defined')
+
if group_name and group_name[0] == '!':
group_name = group_name[1:]
- fw_group = f'ipv6_{group}' if ipv6 and group in ['address_group', 'network_group'] else group
- error_group = fw_group.replace("_", "-")
group_obj = dict_search_args(firewall, 'group', fw_group, group_name)
if group_obj is None:
@@ -466,6 +464,12 @@ def post_apply_trap(firewall):
cmd(base_cmd + ' '.join(objects))
+def resync_nat():
+ # Update nat as firewall groups were updated
+ tmp, out = rc_cmd(nat_conf_script)
+ if tmp > 0:
+ Warning(f'Failed to re-apply nat configuration! {out}')
+
def resync_policy_route():
# Update policy route as firewall groups were updated
tmp, out = rc_cmd(policy_route_conf_script)
@@ -477,32 +481,20 @@ def apply(firewall):
if install_result == 1:
raise ConfigError(f'Failed to apply firewall: {output}')
- # set firewall group domain-group xxx
- if 'group' in firewall:
- if 'domain_group' in firewall['group']:
- # T970 Enable a resolver (systemd daemon) that checks
- # domain-group addresses and update entries for domains by timeout
- # If router loaded without internet connection or for synchronization
- call('systemctl restart vyos-domain-group-resolve.service')
- for group, group_config in firewall['group']['domain_group'].items():
- domains = []
- if group_config.get('address') is not None:
- for address in group_config.get('address'):
- domains.append(address)
- # Add elements to domain-group, try to resolve domain => ip
- # and add elements to nft set
- ip_dict = get_ips_domains_dict(domains)
- elements = sum(ip_dict.values(), [])
- nft_init_set(f'D_{group}')
- nft_add_set_elements(f'D_{group}', elements)
- else:
- call('systemctl stop vyos-domain-group-resolve.service')
-
apply_sysfs(firewall)
- if firewall['policy_resync']:
+ if firewall['group_resync']:
+ resync_nat()
resync_policy_route()
+ # T970 Enable a resolver (systemd daemon) that checks
+ # domain-group/fqdn addresses and update entries for domains by timeout
+ # If router loaded without internet connection or for synchronization
+ domain_action = 'stop'
+ if dict_search_args(firewall, 'group', 'domain_group') or firewall['ip_fqdn'] or firewall['ip6_fqdn']:
+ domain_action = 'restart'
+ call(f'systemctl {domain_action} vyos-domain-resolver.service')
+
if firewall['geoip_updated']:
# Call helper script to Update set contents
if 'name' in firewall['geoip_updated'] or 'ipv6_name' in firewall['geoip_updated']:
diff --git a/src/conf_mode/nat.py b/src/conf_mode/nat.py
index 978c043e9..9f8221514 100755
--- a/src/conf_mode/nat.py
+++ b/src/conf_mode/nat.py
@@ -32,6 +32,7 @@ from vyos.util import cmd
from vyos.util import run
from vyos.util import check_kmod
from vyos.util import dict_search
+from vyos.util import dict_search_args
from vyos.validate import is_addr_assigned
from vyos.xml import defaults
from vyos import ConfigError
@@ -47,6 +48,13 @@ else:
nftables_nat_config = '/run/nftables_nat.conf'
nftables_static_nat_conf = '/run/nftables_static-nat-rules.nft'
+valid_groups = [
+ 'address_group',
+ 'domain_group',
+ 'network_group',
+ 'port_group'
+]
+
def get_handler(json, chain, target):
""" Get nftable rule handler number of given chain/target combination.
Handler is required when adding NAT/Conntrack helper targets """
@@ -60,7 +68,7 @@ def get_handler(json, chain, target):
return None
-def verify_rule(config, err_msg):
+def verify_rule(config, err_msg, groups_dict):
""" Common verify steps used for both source and destination NAT """
if (dict_search('translation.port', config) != None or
@@ -78,6 +86,45 @@ def verify_rule(config, err_msg):
'statically maps a whole network of addresses onto another\n' \
'network of addresses')
+ for side in ['destination', 'source']:
+ if side in config:
+ side_conf = config[side]
+
+ if len({'address', 'fqdn'} & set(side_conf)) > 1:
+ raise ConfigError('Only one of address, fqdn or geoip can be specified')
+
+ if 'group' in side_conf:
+ if len({'address_group', 'network_group', 'domain_group'} & set(side_conf['group'])) > 1:
+ raise ConfigError('Only one address-group, network-group or domain-group can be specified')
+
+ for group in valid_groups:
+ if group in side_conf['group']:
+ group_name = side_conf['group'][group]
+ error_group = group.replace("_", "-")
+
+ if group in ['address_group', 'network_group', 'domain_group']:
+ types = [t for t in ['address', 'fqdn'] if t in side_conf]
+ if types:
+ raise ConfigError(f'{error_group} and {types[0]} cannot both be defined')
+
+ if group_name and group_name[0] == '!':
+ group_name = group_name[1:]
+
+ group_obj = dict_search_args(groups_dict, group, group_name)
+
+ if group_obj is None:
+ raise ConfigError(f'Invalid {error_group} "{group_name}" on firewall rule')
+
+ if not group_obj:
+ Warning(f'{error_group} "{group_name}" has no members!')
+
+ if dict_search_args(side_conf, 'group', 'port_group'):
+ if 'protocol' not in config:
+ raise ConfigError('Protocol must be defined if specifying a port-group')
+
+ if config['protocol'] not in ['tcp', 'udp', 'tcp_udp']:
+ raise ConfigError('Protocol must be tcp, udp, or tcp_udp when specifying a port-group')
+
def get_config(config=None):
if config:
conf = config
@@ -105,16 +152,20 @@ def get_config(config=None):
condensed_json = jmespath.search(pattern, nftable_json)
if not conf.exists(base):
- nat['helper_functions'] = 'remove'
-
- # Retrieve current table handler positions
- nat['pre_ct_ignore'] = get_handler(condensed_json, 'PREROUTING', 'VYOS_CT_HELPER')
- nat['pre_ct_conntrack'] = get_handler(condensed_json, 'PREROUTING', 'NAT_CONNTRACK')
- nat['out_ct_ignore'] = get_handler(condensed_json, 'OUTPUT', 'VYOS_CT_HELPER')
- nat['out_ct_conntrack'] = get_handler(condensed_json, 'OUTPUT', 'NAT_CONNTRACK')
+ if get_handler(condensed_json, 'PREROUTING', 'VYOS_CT_HELPER'):
+ nat['helper_functions'] = 'remove'
+
+ # Retrieve current table handler positions
+ nat['pre_ct_ignore'] = get_handler(condensed_json, 'PREROUTING', 'VYOS_CT_HELPER')
+ nat['pre_ct_conntrack'] = get_handler(condensed_json, 'PREROUTING', 'NAT_CONNTRACK')
+ nat['out_ct_ignore'] = get_handler(condensed_json, 'OUTPUT', 'VYOS_CT_HELPER')
+ nat['out_ct_conntrack'] = get_handler(condensed_json, 'OUTPUT', 'NAT_CONNTRACK')
nat['deleted'] = ''
return nat
+ nat['firewall_group'] = conf.get_config_dict(['firewall', 'group'], key_mangling=('-', '_'), get_first_key=True,
+ no_tag_node_value_mangle=True)
+
# check if NAT connection tracking helpers need to be set up - this has to
# be done only once
if not get_handler(condensed_json, 'PREROUTING', 'NAT_CONNTRACK'):
@@ -157,7 +208,7 @@ def verify(nat):
Warning(f'IP address {ip} does not exist on the system!')
# common rule verification
- verify_rule(config, err_msg)
+ verify_rule(config, err_msg, nat['firewall_group'])
if dict_search('destination.rule', nat):
@@ -175,7 +226,7 @@ def verify(nat):
raise ConfigError(f'{err_msg} translation requires address and/or port')
# common rule verification
- verify_rule(config, err_msg)
+ verify_rule(config, err_msg, nat['firewall_group'])
if dict_search('static.rule', nat):
for rule, config in dict_search('static.rule', nat).items():
@@ -186,7 +237,7 @@ def verify(nat):
'inbound-interface not specified')
# common rule verification
- verify_rule(config, err_msg)
+ verify_rule(config, err_msg, nat['firewall_group'])
return None
diff --git a/src/helpers/vyos-domain-group-resolve.py b/src/helpers/vyos-domain-group-resolve.py
deleted file mode 100755
index 6b677670b..000000000
--- a/src/helpers/vyos-domain-group-resolve.py
+++ /dev/null
@@ -1,60 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 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 time
-
-from vyos.configquery import ConfigTreeQuery
-from vyos.firewall import get_ips_domains_dict
-from vyos.firewall import nft_add_set_elements
-from vyos.firewall import nft_flush_set
-from vyos.firewall import nft_init_set
-from vyos.firewall import nft_update_set_elements
-from vyos.util import call
-
-
-base = ['firewall', 'group', 'domain-group']
-check_required = True
-# count_failed = 0
-# Timeout in sec between checks
-timeout = 300
-
-domain_state = {}
-
-if __name__ == '__main__':
-
- while check_required:
- config = ConfigTreeQuery()
- if config.exists(base):
- domain_groups = config.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
- for set_name, domain_config in domain_groups.items():
- list_domains = domain_config['address']
- elements = []
- ip_dict = get_ips_domains_dict(list_domains)
-
- for domain in list_domains:
- # Resolution succeeded, update domain state
- if domain in ip_dict:
- domain_state[domain] = ip_dict[domain]
- elements += ip_dict[domain]
- # Resolution failed, use previous domain state
- elif domain in domain_state:
- elements += domain_state[domain]
-
- # Resolve successful
- if elements:
- nft_update_set_elements(f'D_{set_name}', elements)
- time.sleep(timeout)
diff --git a/src/helpers/vyos-domain-resolver.py b/src/helpers/vyos-domain-resolver.py
new file mode 100755
index 000000000..035c208b2
--- /dev/null
+++ b/src/helpers/vyos-domain-resolver.py
@@ -0,0 +1,183 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 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 json
+import os
+import time
+
+from vyos.configdict import dict_merge
+from vyos.configquery import ConfigTreeQuery
+from vyos.firewall import fqdn_config_parse
+from vyos.firewall import fqdn_resolve
+from vyos.util import cmd
+from vyos.util import commit_in_progress
+from vyos.util import dict_search_args
+from vyos.util import run
+from vyos.xml import defaults
+
+base = ['firewall']
+timeout = 300
+cache = False
+
+domain_state = {}
+
+ipv4_tables = {
+ 'ip mangle',
+ 'ip vyos_filter',
+ 'ip vyos_nat'
+}
+
+ipv6_tables = {
+ 'ip6 mangle',
+ 'ip6 vyos_filter'
+}
+
+def get_config(conf):
+ firewall = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True,
+ no_tag_node_value_mangle=True)
+
+ default_values = defaults(base)
+ for tmp in ['name', 'ipv6_name']:
+ if tmp in default_values:
+ del default_values[tmp]
+
+ if 'zone' in default_values:
+ del default_values['zone']
+
+ firewall = dict_merge(default_values, firewall)
+
+ global timeout, cache
+
+ if 'resolver_interval' in firewall:
+ timeout = int(firewall['resolver_interval'])
+
+ if 'resolver_cache' in firewall:
+ cache = True
+
+ fqdn_config_parse(firewall)
+
+ return firewall
+
+def resolve(domains, ipv6=False):
+ global domain_state
+
+ ip_list = set()
+
+ for domain in domains:
+ resolved = fqdn_resolve(domain, ipv6=ipv6)
+
+ if resolved and cache:
+ domain_state[domain] = resolved
+ elif not resolved:
+ if domain not in domain_state:
+ continue
+ resolved = domain_state[domain]
+
+ ip_list = ip_list | resolved
+ return ip_list
+
+def nft_output(table, set_name, ip_list):
+ output = [f'flush set {table} {set_name}']
+ if ip_list:
+ ip_str = ','.join(ip_list)
+ output.append(f'add element {table} {set_name} {{ {ip_str} }}')
+ return output
+
+def nft_valid_sets():
+ try:
+ valid_sets = []
+ sets_json = cmd('nft -j list sets')
+ sets_obj = json.loads(sets_json)
+
+ for obj in sets_obj['nftables']:
+ if 'set' in obj:
+ family = obj['set']['family']
+ table = obj['set']['table']
+ name = obj['set']['name']
+ valid_sets.append((f'{family} {table}', name))
+
+ return valid_sets
+ except:
+ return []
+
+def update(firewall):
+ conf_lines = []
+ count = 0
+
+ valid_sets = nft_valid_sets()
+
+ domain_groups = dict_search_args(firewall, 'group', 'domain_group')
+ if domain_groups:
+ for set_name, domain_config in domain_groups.items():
+ if 'address' not in domain_config:
+ continue
+
+ nft_set_name = f'D_{set_name}'
+ domains = domain_config['address']
+
+ ip_list = resolve(domains, ipv6=False)
+ for table in ipv4_tables:
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+
+ ip6_list = resolve(domains, ipv6=True)
+ for table in ipv6_tables:
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip6_list)
+ count += 1
+
+ for set_name, domain in firewall['ip_fqdn'].items():
+ table = 'ip vyos_filter'
+ nft_set_name = f'FQDN_{set_name}'
+
+ ip_list = resolve([domain], ipv6=False)
+
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+ count += 1
+
+ for set_name, domain in firewall['ip6_fqdn'].items():
+ table = 'ip6 vyos_filter'
+ nft_set_name = f'FQDN_{set_name}'
+
+ ip_list = resolve([domain], ipv6=True)
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+ count += 1
+
+ nft_conf_str = "\n".join(conf_lines) + "\n"
+ code = run(f'nft -f -', input=nft_conf_str)
+
+ print(f'Updated {count} sets - result: {code}')
+
+if __name__ == '__main__':
+ print(f'VyOS domain resolver')
+
+ count = 1
+ while commit_in_progress():
+ if ( count % 60 == 0 ):
+ print(f'Commit still in progress after {count}s - waiting')
+ count += 1
+ time.sleep(1)
+
+ conf = ConfigTreeQuery()
+ firewall = get_config(conf)
+
+ print(f'interval: {timeout}s - cache: {cache}')
+
+ while True:
+ update(firewall)
+ time.sleep(timeout)
diff --git a/src/systemd/vyos-domain-group-resolve.service b/src/systemd/vyos-domain-group-resolve.service
deleted file mode 100644
index 29628fddb..000000000
--- a/src/systemd/vyos-domain-group-resolve.service
+++ /dev/null
@@ -1,11 +0,0 @@
-[Unit]
-Description=VyOS firewall domain-group resolver
-After=vyos-router.service
-
-[Service]
-Type=simple
-Restart=always
-ExecStart=/usr/bin/python3 /usr/libexec/vyos/vyos-domain-group-resolve.py
-
-[Install]
-WantedBy=multi-user.target
diff --git a/src/systemd/vyos-domain-resolver.service b/src/systemd/vyos-domain-resolver.service
new file mode 100644
index 000000000..c56b51f0c
--- /dev/null
+++ b/src/systemd/vyos-domain-resolver.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=VyOS firewall domain resolver
+After=vyos-router.service
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/python3 -u /usr/libexec/vyos/vyos-domain-resolver.py
+StandardError=journal
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 09:05:50 +0000