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-rwxr-xr-xsrc/conf_mode/pki.py167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/conf_mode/pki.py b/src/conf_mode/pki.py
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+++ b/src/conf_mode/pki.py
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+#!/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/>.
+
+from sys import exit
+
+from vyos.config import Config
+from vyos.configdict import dict_merge
+from vyos.pki import is_ca_certificate
+from vyos.pki import load_certificate
+from vyos.pki import load_certificate_request
+from vyos.pki import load_public_key
+from vyos.pki import load_private_key
+from vyos.pki import load_crl
+from vyos.pki import load_dh_parameters
+from vyos.util import ask_input
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['pki']
+ if not conf.exists(base):
+ return None
+
+ pki = conf.get_config_dict(base, key_mangling=('-', '_'),
+ get_first_key=True, no_tag_node_value_mangle=True)
+
+ default_values = defaults(base)
+ pki = dict_merge(default_values, pki)
+ return pki
+
+def is_valid_certificate(raw_data):
+ # If it loads correctly we're good, or return False
+ return load_certificate(raw_data, wrap_tags=True)
+
+def is_valid_ca_certificate(raw_data):
+ # Check if this is a valid certificate with CA attributes
+ cert = load_certificate(raw_data, wrap_tags=True)
+ if not cert:
+ return False
+ return is_ca_certificate(cert)
+
+def is_valid_public_key(raw_data):
+ # If it loads correctly we're good, or return False
+ return load_public_key(raw_data, wrap_tags=True)
+
+def is_valid_private_key(raw_data, protected=False):
+ # If it loads correctly we're good, or return False
+ # With encrypted private keys, we always return true as we cannot ask for password to verify
+ if protected:
+ return True
+ return load_private_key(raw_data, passphrase=None, wrap_tags=True)
+
+def is_valid_crl(raw_data):
+ # If it loads correctly we're good, or return False
+ return load_crl(raw_data, wrap_tags=True)
+
+def is_valid_dh_parameters(raw_data):
+ # If it loads correctly we're good, or return False
+ return load_dh_parameters(raw_data, wrap_tags=True)
+
+def verify(pki):
+ if not pki:
+ return None
+
+ if 'ca' in pki:
+ for name, ca_conf in pki['ca'].items():
+ if 'certificate' in ca_conf:
+ if not is_valid_ca_certificate(ca_conf['certificate']):
+ raise ConfigError(f'Invalid certificate on CA certificate "{name}"')
+
+ if 'private' in ca_conf and 'key' in ca_conf['private']:
+ private = ca_conf['private']
+ protected = 'password_protected' in private
+
+ if not is_valid_private_key(private['key'], protected):
+ raise ConfigError(f'Invalid private key on CA certificate "{name}"')
+
+ if 'crl' in ca_conf:
+ ca_crls = ca_conf['crl']
+ if isinstance(ca_crls, str):
+ ca_crls = [ca_crls]
+
+ for crl in ca_crls:
+ if not is_valid_crl(crl):
+ raise ConfigError(f'Invalid CRL on CA certificate "{name}"')
+
+ if 'certificate' in pki:
+ for name, cert_conf in pki['certificate'].items():
+ if 'certificate' in cert_conf:
+ if not is_valid_certificate(cert_conf['certificate']):
+ raise ConfigError(f'Invalid certificate on certificate "{name}"')
+
+ if 'private' in cert_conf and 'key' in cert_conf['private']:
+ private = cert_conf['private']
+ protected = 'password_protected' in private
+
+ if not is_valid_private_key(private['key'], protected):
+ raise ConfigError(f'Invalid private key on certificate "{name}"')
+
+ if 'dh' in pki:
+ for name, dh_conf in pki['dh'].items():
+ if 'parameters' in dh_conf:
+ if not is_valid_dh_parameters(dh_conf['parameters']):
+ raise ConfigError(f'Invalid DH parameters on "{name}"')
+
+ if 'key_pair' in pki:
+ for name, key_conf in pki['key_pair'].items():
+ if 'public' in key_conf and 'key' in key_conf['public']:
+ if not is_valid_public_key(key_conf['public']['key']):
+ raise ConfigError(f'Invalid public key on key-pair "{name}"')
+
+ if 'private' in key_conf and 'key' in key_conf['private']:
+ private = key_conf['private']
+ protected = 'password_protected' in private
+ if not is_valid_private_key(private['key'], protected):
+ raise ConfigError(f'Invalid private key on key-pair "{name}"')
+
+ if 'x509' in pki:
+ if 'default' in pki['x509']:
+ default_values = pki['x509']['default']
+ if 'country' in default_values:
+ country = default_values['country']
+ if len(country) != 2 or not country.isalpha():
+ raise ConfigError(f'Invalid default country value. Value must be 2 alpha characters.')
+
+ return None
+
+def generate(pki):
+ if not pki:
+ return None
+
+ return None
+
+def apply(pki):
+ if not pki:
+ return None
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)