diff options
Diffstat (limited to 'python/vyos')
| -rw-r--r-- | python/vyos/firewall.py | 4 | ||||
| -rw-r--r-- | python/vyos/kea.py | 24 | ||||
| -rw-r--r-- | python/vyos/remote.py | 16 | ||||
| -rw-r--r-- | python/vyos/tpm.py | 98 |
4 files changed, 127 insertions, 15 deletions
diff --git a/python/vyos/firewall.py b/python/vyos/firewall.py index 49e095946..e70b4f0d9 100644 --- a/python/vyos/firewall.py +++ b/python/vyos/firewall.py @@ -136,10 +136,10 @@ def parse_rule(rule_conf, hook, fw_name, rule_id, ip_name): if 'connection_status' in rule_conf and rule_conf['connection_status']: status = rule_conf['connection_status'] if status['nat'] == 'destination': - nat_status = '{dnat}' + nat_status = 'dnat' output.append(f'ct status {nat_status}') if status['nat'] == 'source': - nat_status = '{snat}' + nat_status = 'snat' output.append(f'ct status {nat_status}') if 'protocol' in rule_conf and rule_conf['protocol'] != 'all': diff --git a/python/vyos/kea.py b/python/vyos/kea.py index 2328d0b00..89ae7ca81 100644 --- a/python/vyos/kea.py +++ b/python/vyos/kea.py @@ -56,6 +56,8 @@ kea6_options = { 'captive_portal': 'v6-captive-portal' } +kea_ctrl_socket = '/run/kea/dhcp{inet}-ctrl-socket' + def kea_parse_options(config): options = [] @@ -294,7 +296,9 @@ def kea6_parse_subnet(subnet, config): return out -def _ctrl_socket_command(path, command, args=None): +def _ctrl_socket_command(inet, command, args=None): + path = kea_ctrl_socket.format(inet=inet) + if not os.path.exists(path): return None @@ -319,19 +323,25 @@ def _ctrl_socket_command(path, command, args=None): return json.loads(result.decode('utf-8')) def kea_get_leases(inet): - ctrl_socket = f'/run/kea/dhcp{inet}-ctrl-socket' - - leases = _ctrl_socket_command(ctrl_socket, f'lease{inet}-get-all') + leases = _ctrl_socket_command(inet, f'lease{inet}-get-all') if not leases or 'result' not in leases or leases['result'] != 0: return [] return leases['arguments']['leases'] -def kea_get_active_config(inet): - ctrl_socket = f'/run/kea/dhcp{inet}-ctrl-socket' +def kea_delete_lease(inet, ip_address): + args = {'ip-address': ip_address} - config = _ctrl_socket_command(ctrl_socket, 'config-get') + result = _ctrl_socket_command(inet, f'lease{inet}-del', args) + + if result and 'result' in result: + return result['result'] == 0 + + return False + +def kea_get_active_config(inet): + config = _ctrl_socket_command(inet, 'config-get') if not config or 'result' not in config or config['result'] != 0: return None diff --git a/python/vyos/remote.py b/python/vyos/remote.py index 129e65772..d87fd24f6 100644 --- a/python/vyos/remote.py +++ b/python/vyos/remote.py @@ -43,6 +43,7 @@ from vyos.utils.io import print_error from vyos.utils.misc import begin from vyos.utils.process import cmd, rc_cmd from vyos.version import get_version +from vyos.base import Warning CHUNK_SIZE = 8192 @@ -54,13 +55,16 @@ class InteractivePolicy(MissingHostKeyPolicy): def missing_host_key(self, client, hostname, key): print_error(f"Host '{hostname}' not found in known hosts.") print_error('Fingerprint: ' + key.get_fingerprint().hex()) - if sys.stdin.isatty() and ask_yes_no('Do you wish to continue?'): - if client._host_keys_filename\ - and ask_yes_no('Do you wish to permanently add this host/key pair to known hosts?'): - client._host_keys.add(hostname, key.get_name(), key) - client.save_host_keys(client._host_keys_filename) - else: + if not sys.stdin.isatty(): + return + if not ask_yes_no('Do you wish to continue?'): raise SSHException(f"Cannot connect to unknown host '{hostname}'.") + if client._host_keys_filename is None: + Warning('no \'known_hosts\' file; create to store keys permanently') + return + if ask_yes_no('Do you wish to permanently add this host/key pair to known_hosts file?'): + client._host_keys.add(hostname, key.get_name(), key) + client.save_host_keys(client._host_keys_filename) class SourceAdapter(HTTPAdapter): """ diff --git a/python/vyos/tpm.py b/python/vyos/tpm.py new file mode 100644 index 000000000..f120e10c4 --- /dev/null +++ b/python/vyos/tpm.py @@ -0,0 +1,98 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2024 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 +import tempfile + +from vyos.util import rc_cmd + +default_pcrs = ['0','2','4','7'] +tpm_handle = 0x81000000 + +def init_tpm(clear=False): + """ + Initialize TPM + """ + code, output = rc_cmd('tpm2_startup' + (' -c' if clear else '')) + if code != 0: + raise Exception('init_tpm: Failed to initialize TPM') + +def clear_tpm_key(): + """ + Clear existing key on TPM + """ + code, output = rc_cmd(f'tpm2_evictcontrol -C o -c {tpm_handle}') + if code != 0: + raise Exception('clear_tpm_key: Failed to clear TPM key') + +def read_tpm_key(index=0, pcrs=default_pcrs): + """ + Read existing key on TPM + """ + with tempfile.TemporaryDirectory() as tpm_dir: + pcr_str = ",".join(pcrs) + + tpm_key_file = os.path.join(tpm_dir, 'tpm_key.key') + code, output = rc_cmd(f'tpm2_unseal -c {tpm_handle + index} -p pcr:sha256:{pcr_str} -o {tpm_key_file}') + if code != 0: + raise Exception('read_tpm_key: Failed to read key from TPM') + + with open(tpm_key_file, 'rb') as f: + tpm_key = f.read() + + return tpm_key + +def write_tpm_key(key, index=0, pcrs=default_pcrs): + """ + Saves key to TPM + """ + with tempfile.TemporaryDirectory() as tpm_dir: + pcr_str = ",".join(pcrs) + + policy_file = os.path.join(tpm_dir, 'policy.digest') + code, output = rc_cmd(f'tpm2_createpolicy --policy-pcr -l sha256:{pcr_str} -L {policy_file}') + if code != 0: + raise Exception('write_tpm_key: Failed to create policy digest') + + primary_context_file = os.path.join(tpm_dir, 'primary.ctx') + code, output = rc_cmd(f'tpm2_createprimary -C e -g sha256 -G rsa -c {primary_context_file}') + if code != 0: + raise Exception('write_tpm_key: Failed to create primary key') + + key_file = os.path.join(tpm_dir, 'crypt.key') + with open(key_file, 'wb') as f: + f.write(key) + + public_obj = os.path.join(tpm_dir, 'obj.pub') + private_obj = os.path.join(tpm_dir, 'obj.key') + code, output = rc_cmd( + f'tpm2_create -g sha256 \ + -u {public_obj} -r {private_obj} \ + -C {primary_context_file} -L {policy_file} -i {key_file}') + + if code != 0: + raise Exception('write_tpm_key: Failed to create object') + + load_context_file = os.path.join(tpm_dir, 'load.ctx') + code, output = rc_cmd(f'tpm2_load -C {primary_context_file} -u {public_obj} -r {private_obj} -c {load_context_file}') + + if code != 0: + raise Exception('write_tpm_key: Failed to load object') + + code, output = rc_cmd(f'tpm2_evictcontrol -c {load_context_file} -C o {tpm_handle + index}') + + if code != 0: + raise Exception('write_tpm_key: Failed to write object to TPM') |