From 79f6f7061c0c0a00ce480d93c71fc4bcd06eb3a0 Mon Sep 17 00:00:00 2001 From: sarthurdev <965089+sarthurdev@users.noreply.github.com> Date: Wed, 5 Jan 2022 15:06:37 +0100 Subject: firewall: zone-policy: T4133: Prevent firewall from trying to clean-up zone-policy chains * Prevent firewall names from using the reserved VZONE prefix --- src/conf_mode/firewall.py | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'src') diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py index 6016d94fa..75382034f 100755 --- a/src/conf_mode/firewall.py +++ b/src/conf_mode/firewall.py @@ -183,6 +183,9 @@ def verify(firewall): if name_id in preserve_chains: raise ConfigError(f'Firewall name "{name_id}" is reserved for VyOS') + if name_id.startswith("VZONE"): + raise ConfigError(f'Firewall name "{name_id}" uses reserved prefix') + if 'rule' in name_conf: for rule_id, rule_conf in name_conf['rule'].items(): verify_rule(firewall, rule_conf, name == 'ipv6_name') @@ -210,14 +213,13 @@ def cleanup_commands(firewall): continue for item in obj['nftables']: if 'chain' in item: - if item['chain']['name'] in ['VYOS_STATE_POLICY', 'VYOS_STATE_POLICY6']: - chain = item['chain']['name'] + chain = item['chain']['name'] + if chain in ['VYOS_STATE_POLICY', 'VYOS_STATE_POLICY6']: if 'state_policy' not in firewall: commands.append(f'delete chain {table} {chain}') else: commands.append(f'flush chain {table} {chain}') - elif item['chain']['name'] not in preserve_chains: - chain = item['chain']['name'] + elif chain not in preserve_chains and not chain.startswith("VZONE"): if table == 'ip filter' and dict_search_args(firewall, 'name', chain): commands.append(f'flush chain {table} {chain}') elif table == 'ip6 filter' and dict_search_args(firewall, 'ipv6_name', chain): -- cgit v1.2.3