From 8dcb042bb2352717395ba3c17bc5437534c83af5 Mon Sep 17 00:00:00 2001 From: Nicolas Fort Date: Fri, 30 Aug 2024 17:54:17 +0000 Subject: T6687: add fqdn support to nat rules. (cherry picked from commit 4c3d037f036e84c77333a400b35bb1a628a1a118) --- src/helpers/vyos-domain-resolver.py | 107 +++++++++++++++++++----------------- 1 file changed, 58 insertions(+), 49 deletions(-) (limited to 'src/helpers/vyos-domain-resolver.py') diff --git a/src/helpers/vyos-domain-resolver.py b/src/helpers/vyos-domain-resolver.py index 57cfcabd7..f5a1d9297 100755 --- a/src/helpers/vyos-domain-resolver.py +++ b/src/helpers/vyos-domain-resolver.py @@ -30,6 +30,8 @@ from vyos.xml_ref import get_defaults base = ['firewall'] timeout = 300 cache = False +base_firewall = ['firewall'] +base_nat = ['nat'] domain_state = {} @@ -46,25 +48,25 @@ ipv6_tables = { 'ip6 raw' } -def get_config(conf): - firewall = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True, +def get_config(conf, node): + node_config = conf.get_config_dict(node, key_mangling=('-', '_'), get_first_key=True, no_tag_node_value_mangle=True) - default_values = get_defaults(base, get_first_key=True) + default_values = get_defaults(node, get_first_key=True) - firewall = dict_merge(default_values, firewall) + node_config = dict_merge(default_values, node_config) global timeout, cache - if 'resolver_interval' in firewall: - timeout = int(firewall['resolver_interval']) + if 'resolver_interval' in node_config: + timeout = int(node_config['resolver_interval']) - if 'resolver_cache' in firewall: + if 'resolver_cache' in node_config: cache = True - fqdn_config_parse(firewall) + fqdn_config_parse(node_config, node[0]) - return firewall + return node_config def resolve(domains, ipv6=False): global domain_state @@ -108,55 +110,60 @@ def nft_valid_sets(): except: return [] -def update(firewall): +def update_fqdn(config, node): 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) + if node == 'firewall': + domain_groups = dict_search_args(config, '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 config['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['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}' + for set_name, domain in config['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 - 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 + else: + # It's NAT + for set_name, domain in config['ip_fqdn'].items(): + table = 'ip vyos_nat' + nft_set_name = f'FQDN_nat_{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 nft_conf_str = "\n".join(conf_lines) + "\n" code = run(f'nft --file -', input=nft_conf_str) - print(f'Updated {count} sets - result: {code}') + print(f'Updated {count} sets in {node} - result: {code}') if __name__ == '__main__': print(f'VyOS domain resolver') @@ -169,10 +176,12 @@ if __name__ == '__main__': time.sleep(1) conf = ConfigTreeQuery() - firewall = get_config(conf) + firewall = get_config(conf, base_firewall) + nat = get_config(conf, base_nat) print(f'interval: {timeout}s - cache: {cache}') while True: - update(firewall) + update_fqdn(firewall, 'firewall') + update_fqdn(nat, 'nat') time.sleep(timeout) -- cgit v1.2.3