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diff --git a/src/op_mode/firewall.py b/src/op_mode/firewall.py
index 581710b31..9afc40647 100755
--- a/src/op_mode/firewall.py
+++ b/src/op_mode/firewall.py
@@ -1,405 +1,417 @@
#!/usr/bin/env python3
#
# Copyright (C) 2021 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 argparse
import ipaddress
import json
import re
import tabulate
from vyos.config import Config
from vyos.utils.process import cmd
from vyos.utils.dict import dict_search_args
def get_config_firewall(conf, hook=None, priority=None, ipv6=False):
config_path = ['firewall']
if hook:
config_path += ['ipv6' if ipv6 else 'ipv4', hook]
if priority:
config_path += [priority]
firewall = conf.get_config_dict(config_path, key_mangling=('-', '_'),
get_first_key=True, no_tag_node_value_mangle=True)
return firewall
def get_nftables_details(hook, priority, ipv6=False):
suffix = '6' if ipv6 else ''
aux = 'IPV6_' if ipv6 else ''
name_prefix = 'NAME6_' if ipv6 else 'NAME_'
if hook == 'name' or hook == 'ipv6-name':
command = f'sudo nft list chain ip{suffix} vyos_filter {name_prefix}{priority}'
else:
up_hook = hook.upper()
command = f'sudo nft list chain ip{suffix} vyos_filter VYOS_{aux}{up_hook}_{priority}'
try:
results = cmd(command)
except:
return {}
out = {}
for line in results.split('\n'):
comment_search = re.search(rf'{priority}[\- ](\d+|default-action)', line)
if not comment_search:
continue
rule = {}
rule_id = comment_search[1]
counter_search = re.search(r'counter packets (\d+) bytes (\d+)', line)
if counter_search:
rule['packets'] = counter_search[1]
rule['bytes'] = counter_search[2]
rule['conditions'] = re.sub(r'(\b(counter packets \d+ bytes \d+|drop|reject|return|log)\b|comment "[\w\-]+")', '', line).strip()
out[rule_id] = rule
return out
def output_firewall_name(hook, priority, firewall_conf, ipv6=False, single_rule_id=None):
ip_str = 'IPv6' if ipv6 else 'IPv4'
print(f'\n---------------------------------\n{ip_str} Firewall "{hook} {priority}"\n')
details = get_nftables_details(hook, priority, ipv6)
rows = []
if 'rule' in firewall_conf:
for rule_id, rule_conf in firewall_conf['rule'].items():
if single_rule_id and rule_id != single_rule_id:
continue
if 'disable' in rule_conf:
continue
row = [rule_id, rule_conf['action'], rule_conf['protocol'] if 'protocol' in rule_conf else 'all']
if rule_id in details:
rule_details = details[rule_id]
row.append(rule_details.get('packets', 0))
row.append(rule_details.get('bytes', 0))
row.append(rule_details['conditions'])
rows.append(row)
if 'default_action' in firewall_conf and not single_rule_id:
row = ['default', firewall_conf['default_action'], 'all']
if 'default-action' in details:
rule_details = details['default-action']
row.append(rule_details.get('packets', 0))
row.append(rule_details.get('bytes', 0))
rows.append(row)
if rows:
header = ['Rule', 'Action', 'Protocol', 'Packets', 'Bytes', 'Conditions']
print(tabulate.tabulate(rows, header) + '\n')
def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_rule_id=None):
ip_str = 'IPv6' if ipv6 else 'IPv4'
print(f'\n---------------------------------\n{ip_str} Firewall "{hook} {prior}"\n')
details = get_nftables_details(hook, prior, ipv6)
rows = []
if 'rule' in prior_conf:
for rule_id, rule_conf in prior_conf['rule'].items():
if single_rule_id and rule_id != single_rule_id:
continue
if 'disable' in rule_conf:
continue
# Get source
source_addr = dict_search_args(rule_conf, 'source', 'address')
if not source_addr:
source_addr = dict_search_args(rule_conf, 'source', 'group', 'address_group')
if not source_addr:
source_addr = dict_search_args(rule_conf, 'source', 'group', 'network_group')
if not source_addr:
source_addr = dict_search_args(rule_conf, 'source', 'group', 'domain_group')
if not source_addr:
- source_addr = '::/0' if ipv6 else '0.0.0.0/0'
+ source_addr = dict_search_args(rule_conf, 'source', 'fqdn')
+ if not source_addr:
+ source_addr = dict_search_args(rule_conf, 'source', 'geoip', 'country_code')
+ if source_addr and 'inverse_match' in dict_search_args(rule_conf, 'source', 'geoip'):
+ source_addr = '!' + str(source_addr)
+ if not source_addr:
+ source_addr = '::/0' if ipv6 else '0.0.0.0/0'
# Get destination
dest_addr = dict_search_args(rule_conf, 'destination', 'address')
if not dest_addr:
dest_addr = dict_search_args(rule_conf, 'destination', 'group', 'address_group')
if not dest_addr:
dest_addr = dict_search_args(rule_conf, 'destination', 'group', 'network_group')
if not dest_addr:
dest_addr = dict_search_args(rule_conf, 'destination', 'group', 'domain_group')
if not dest_addr:
- dest_addr = '::/0' if ipv6 else '0.0.0.0/0'
+ dest_addr = dict_search_args(rule_conf, 'destination', 'fqdn')
+ if not dest_addr:
+ dest_addr = dict_search_args(rule_conf, 'destination', 'geoip', 'country_code')
+ if dest_addr and 'inverse_match' in dict_search_args(rule_conf, 'destination', 'geoip'):
+ dest_addr = '!' + str(dest_addr)
+ if not dest_addr:
+ dest_addr = '::/0' if ipv6 else '0.0.0.0/0'
# Get inbound interface
iiface = dict_search_args(rule_conf, 'inbound_interface', 'interface_name')
if not iiface:
iiface = dict_search_args(rule_conf, 'inbound_interface', 'interface_group')
if not iiface:
iiface = 'any'
# Get outbound interface
oiface = dict_search_args(rule_conf, 'outbound_interface', 'interface_name')
if not oiface:
oiface = dict_search_args(rule_conf, 'outbound_interface', 'interface_group')
if not oiface:
oiface = 'any'
row = [rule_id]
if rule_id in details:
rule_details = details[rule_id]
row.append(rule_details.get('packets', 0))
row.append(rule_details.get('bytes', 0))
else:
row.append('0')
row.append('0')
row.append(rule_conf['action'])
row.append(source_addr)
row.append(dest_addr)
row.append(iiface)
row.append(oiface)
rows.append(row)
if 'default_action' in prior_conf and not single_rule_id:
row = ['default']
if 'default-action' in details:
rule_details = details['default-action']
row.append(rule_details.get('packets', 0))
row.append(rule_details.get('bytes', 0))
else:
row.append('0')
row.append('0')
row.append(prior_conf['default_action'])
row.append('0.0.0.0/0') # Source
row.append('0.0.0.0/0') # Dest
rows.append(row)
if rows:
header = ['Rule', 'Packets', 'Bytes', 'Action', 'Source', 'Destination', 'Inbound-Interface', 'Outbound-interface']
print(tabulate.tabulate(rows, header) + '\n')
def show_firewall():
print('Rulesets Information')
conf = Config()
firewall = get_config_firewall(conf)
if not firewall:
return
if 'ipv4' in firewall:
for hook, hook_conf in firewall['ipv4'].items():
for prior, prior_conf in firewall['ipv4'][hook].items():
output_firewall_name(hook, prior, prior_conf, ipv6=False)
if 'ipv6' in firewall:
for hook, hook_conf in firewall['ipv6'].items():
for prior, prior_conf in firewall['ipv6'][hook].items():
output_firewall_name(hook, prior, prior_conf, ipv6=True)
def show_firewall_family(family):
print(f'Rulesets {family} Information')
conf = Config()
firewall = get_config_firewall(conf)
if not firewall:
return
for hook, hook_conf in firewall[family].items():
for prior, prior_conf in firewall[family][hook].items():
if family == 'ipv6':
output_firewall_name(hook, prior, prior_conf, ipv6=True)
else:
output_firewall_name(hook, prior, prior_conf, ipv6=False)
def show_firewall_name(hook, priority, ipv6=False):
print('Ruleset Information')
conf = Config()
firewall = get_config_firewall(conf, hook, priority, ipv6)
if firewall:
output_firewall_name(hook, priority, firewall, ipv6)
def show_firewall_rule(hook, priority, rule_id, ipv6=False):
print('Rule Information')
conf = Config()
firewall = get_config_firewall(conf, hook, priority, ipv6)
if firewall:
output_firewall_name(hook, priority, firewall, ipv6, rule_id)
def show_firewall_group(name=None):
conf = Config()
firewall = get_config_firewall(conf)
if 'group' not in firewall:
return
def find_references(group_type, group_name):
out = []
family = []
if group_type in ['address_group', 'network_group']:
family = ['ipv4']
elif group_type == 'ipv6_address_group':
family = ['ipv6']
group_type = 'address_group'
elif group_type == 'ipv6_network_group':
family = ['ipv6']
group_type = 'network_group'
else:
family = ['ipv4', 'ipv6']
for item in family:
for name_type in ['name', 'ipv6_name', 'forward', 'input', 'output']:
if item in firewall:
if name_type not in firewall[item]:
continue
for priority, priority_conf in firewall[item][name_type].items():
if priority not in firewall[item][name_type]:
continue
for rule_id, rule_conf in priority_conf['rule'].items():
source_group = dict_search_args(rule_conf, 'source', 'group', group_type)
dest_group = dict_search_args(rule_conf, 'destination', 'group', group_type)
in_interface = dict_search_args(rule_conf, 'inbound_interface', 'interface_group')
out_interface = dict_search_args(rule_conf, 'outbound_interface', 'interface_group')
if source_group:
if source_group[0] == "!":
source_group = source_group[1:]
if group_name == source_group:
out.append(f'{item}-{name_type}-{priority}-{rule_id}')
if dest_group:
if dest_group[0] == "!":
dest_group = dest_group[1:]
if group_name == dest_group:
out.append(f'{item}-{name_type}-{priority}-{rule_id}')
if in_interface:
if in_interface[0] == "!":
in_interface = in_interface[1:]
if group_name == in_interface:
out.append(f'{item}-{name_type}-{priority}-{rule_id}')
if out_interface:
if out_interface[0] == "!":
out_interface = out_interface[1:]
if group_name == out_interface:
out.append(f'{item}-{name_type}-{priority}-{rule_id}')
return out
header = ['Name', 'Type', 'References', 'Members']
rows = []
for group_type, group_type_conf in firewall['group'].items():
for group_name, group_conf in group_type_conf.items():
if name and name != group_name:
continue
references = find_references(group_type, group_name)
row = [group_name, group_type, '\n'.join(references) or 'N/A']
if 'address' in group_conf:
row.append("\n".join(sorted(group_conf['address'])))
elif 'network' in group_conf:
row.append("\n".join(sorted(group_conf['network'], key=ipaddress.ip_network)))
elif 'mac_address' in group_conf:
row.append("\n".join(sorted(group_conf['mac_address'])))
elif 'port' in group_conf:
row.append("\n".join(sorted(group_conf['port'])))
elif 'interface' in group_conf:
row.append("\n".join(sorted(group_conf['interface'])))
else:
row.append('N/A')
rows.append(row)
if rows:
print('Firewall Groups\n')
print(tabulate.tabulate(rows, header))
def show_summary():
print('Ruleset Summary')
conf = Config()
firewall = get_config_firewall(conf)
if not firewall:
return
header = ['Ruleset Hook', 'Ruleset Priority', 'Description', 'References']
v4_out = []
v6_out = []
if 'ipv4' in firewall:
for hook, hook_conf in firewall['ipv4'].items():
for prior, prior_conf in firewall['ipv4'][hook].items():
description = prior_conf.get('description', '')
v4_out.append([hook, prior, description])
if 'ipv6' in firewall:
for hook, hook_conf in firewall['ipv6'].items():
for prior, prior_conf in firewall['ipv6'][hook].items():
description = prior_conf.get('description', '')
v6_out.append([hook, prior, description])
if v6_out:
print('\nIPv6 Ruleset:\n')
print(tabulate.tabulate(v6_out, header) + '\n')
if v4_out:
print('\nIPv4 Ruleset:\n')
print(tabulate.tabulate(v4_out, header) + '\n')
show_firewall_group()
def show_statistics():
print('Rulesets Statistics')
conf = Config()
firewall = get_config_firewall(conf)
if not firewall:
return
if 'ipv4' in firewall:
for hook, hook_conf in firewall['ipv4'].items():
for prior, prior_conf in firewall['ipv4'][hook].items():
output_firewall_name_statistics(hook,prior, prior_conf, ipv6=False)
if 'ipv6' in firewall:
for hook, hook_conf in firewall['ipv6'].items():
for prior, prior_conf in firewall['ipv6'][hook].items():
output_firewall_name_statistics(hook,prior, prior_conf, ipv6=True)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--action', help='Action', required=False)
parser.add_argument('--name', help='Firewall name', required=False, action='store', nargs='?', default='')
parser.add_argument('--family', help='IP family', required=False, action='store', nargs='?', default='')
parser.add_argument('--hook', help='Firewall hook', required=False, action='store', nargs='?', default='')
parser.add_argument('--priority', help='Firewall priority', required=False, action='store', nargs='?', default='')
parser.add_argument('--rule', help='Firewall Rule ID', required=False)
parser.add_argument('--ipv6', help='IPv6 toggle', action='store_true')
args = parser.parse_args()
if args.action == 'show':
if not args.rule:
show_firewall_name(args.hook, args.priority, args.ipv6)
else:
show_firewall_rule(args.hook, args.priority, args.rule, args.ipv6)
elif args.action == 'show_all':
show_firewall()
elif args.action == 'show_family':
show_firewall_family(args.family)
elif args.action == 'show_group':
show_firewall_group(args.name)
elif args.action == 'show_statistics':
show_statistics()
elif args.action == 'show_summary':
show_summary()

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