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authorSimon <965089+sarthurdev@users.noreply.github.com>2021-05-28 16:35:12 +0200
committerGitHub <noreply@github.com>2021-05-28 16:35:12 +0200
commiteabc5f1c2e5bfe548cb3d62f2f85f8d61be29b92 (patch)
tree2efe4cf2ad2e0cb9b9f355dffa22707b26f785ef /src/conf_mode/vpn_rsa-keys.py
parentb0e1c8a9c9ef470297bf3c9f5059ad7c720c46ff (diff)
downloadvyos-1x-eabc5f1c2e5bfe548cb3d62f2f85f8d61be29b92.tar.gz
vyos-1x-eabc5f1c2e5bfe548cb3d62f2f85f8d61be29b92.zip
ipsec: T2816: IPSec python rework, includes DMVPN and VTI support
Diffstat (limited to 'src/conf_mode/vpn_rsa-keys.py')
-rwxr-xr-xsrc/conf_mode/vpn_rsa-keys.py110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/conf_mode/vpn_rsa-keys.py b/src/conf_mode/vpn_rsa-keys.py
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+++ b/src/conf_mode/vpn_rsa-keys.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/>.
+
+import base64
+import os
+import struct
+
+from sys import exit
+
+from vyos.config import Config
+from vyos.util import call
+from vyos import ConfigError
+from vyos import airbag
+from Crypto.PublicKey.RSA import construct
+
+airbag.enable()
+
+LOCAL_KEY_PATHS = ['/config/auth/', '/config/ipsec.d/rsa-keys/']
+LOCAL_OUTPUT = '/etc/ipsec.d/certs/localhost.pub'
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['vpn', 'rsa-keys']
+ if not conf.exists(base):
+ return None
+
+ return conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True, no_tag_node_value_mangle=True)
+
+def verify(conf):
+ if not conf:
+ return
+
+ if 'local_key' in conf and 'file' in conf['local_key']:
+ local_key = conf['local_key']['file']
+ if not local_key:
+ raise ConfigError(f'Invalid local-key')
+
+ if not get_local_key(local_key):
+ raise ConfigError(f'File not found for local-key: {local_key}')
+
+def get_local_key(local_key):
+ for path in LOCAL_KEY_PATHS:
+ if os.path.exists(path + local_key):
+ return path + local_key
+ return False
+
+def generate(conf):
+ if not conf:
+ return
+
+ if 'local_key' in conf and 'file' in conf['local_key']:
+ local_key = conf['local_key']['file']
+ local_key_path = get_local_key(local_key)
+ call(f'sudo /usr/bin/openssl rsa -in {local_key_path} -pubout -out {LOCAL_OUTPUT}')
+
+ if 'rsa_key_name' in conf:
+ for key_name, key_conf in conf['rsa_key_name'].items():
+ if 'rsa_key' not in key_conf:
+ continue
+
+ remote_key = key_conf['rsa_key']
+
+ if remote_key[:2] == "0s": # Vyatta format
+ remote_key = migrate_from_vyatta_key(remote_key)
+ else:
+ remote_key = bytes('-----BEGIN PUBLIC KEY-----\n' + remote_key + '\n-----END PUBLIC KEY-----\n', 'utf-8')
+
+ with open(f'/etc/ipsec.d/certs/{key_name}.pub', 'wb') as f:
+ f.write(remote_key)
+
+def migrate_from_vyatta_key(data):
+ data = base64.b64decode(data[2:])
+ length = struct.unpack('B', data[:1])[0]
+ e = int.from_bytes(data[1:1+length], 'big')
+ n = int.from_bytes(data[1+length:], 'big')
+ pubkey = construct((n, e))
+ return pubkey.exportKey(format='PEM')
+
+def apply(conf):
+ if not conf:
+ return
+
+ call('sudo /usr/sbin/ipsec rereadall')
+ call('sudo /usr/sbin/ipsec reload')
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)