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Diffstat (limited to 'src/op_mode/show_openconnect_otp.py')
-rwxr-xr-xsrc/op_mode/show_openconnect_otp.py109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/op_mode/show_openconnect_otp.py b/src/op_mode/show_openconnect_otp.py
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+++ b/src/op_mode/show_openconnect_otp.py
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+#!/usr/bin/env python3
+
+# Copyright 2017, 2022 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library. If not, see <http://www.gnu.org/licenses/>.
+
+import argparse
+import os
+
+from vyos.config import Config
+from vyos.xml import defaults
+from vyos.configdict import dict_merge
+from vyos.util import popen
+from base64 import b32encode
+
+otp_file = '/run/ocserv/users.oath'
+
+def check_uname_otp(username):
+ """
+ Check if "username" exists and have an OTP key
+ """
+ config = Config()
+ base_key = ['vpn', 'openconnect', 'authentication', 'local-users', 'username', username, 'otp', 'key']
+ if not config.exists(base_key):
+ return None
+ return True
+
+def get_otp_ocserv(username):
+ config = Config()
+ base = ['vpn', 'openconnect']
+ if not config.exists(base):
+ return None
+ ocserv = config.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
+ # We have gathered the dict representation of the CLI, but there are default
+ # options which we need to update into the dictionary retrived.
+ default_values = defaults(base)
+ ocserv = dict_merge(default_values, ocserv)
+ # workaround a "know limitation" - https://phabricator.vyos.net/T2665
+ del ocserv['authentication']['local_users']['username']['otp']
+ if not ocserv["authentication"]["local_users"]["username"]:
+ return None
+ default_ocserv_usr_values = default_values['authentication']['local_users']['username']['otp']
+ for user, params in ocserv['authentication']['local_users']['username'].items():
+ # Not every configuration requires OTP settings
+ if ocserv['authentication']['local_users']['username'][user].get('otp'):
+ ocserv['authentication']['local_users']['username'][user]['otp'] = dict_merge(default_ocserv_usr_values, ocserv['authentication']['local_users']['username'][user]['otp'])
+ result = ocserv['authentication']['local_users']['username'][username]
+ return result
+
+def display_otp_ocserv(username, params, info):
+ hostname = os.uname()[1]
+ key_hex = params['otp']['key']
+ otp_length = params['otp']['otp_length']
+ interval = params['otp']['interval']
+ token_type = params['otp']['token_type']
+ if token_type == 'hotp-time':
+ token_type_acrn = 'totp'
+ key_base32 = b32encode(bytes.fromhex(key_hex)).decode()
+ otp_url = ''.join(["otpauth://",token_type_acrn,"/",username,"@",hostname,"?secret=",key_base32,"&digits=",otp_length,"&period=",interval])
+ qrcode,err = popen('qrencode -t ansiutf8', input=otp_url)
+
+ if info == 'full':
+ print("# You can share it with the user, he just needs to scan the QR in his OTP app")
+ print("# username: ", username)
+ print("# OTP KEY: ", key_base32)
+ print("# OTP URL: ", otp_url)
+ print(qrcode)
+ print('# To add this OTP key to configuration, run the following commands:')
+ print(f"set vpn openconnect authentication local-users username {username} otp key '{key_hex}'")
+ if interval != "30":
+ print(f"set vpn openconnect authentication local-users username {username} otp interval '{interval}'")
+ if otp_length != "6":
+ print(f"set vpn openconnect authentication local-users username {username} otp otp-length '{otp_length}'")
+ elif info == 'key-hex':
+ print("# OTP key in hexadecimal: ")
+ print(key_hex)
+ elif info == 'key-b32':
+ print("# OTP key in Base32: ")
+ print(key_base32)
+ elif info == 'qrcode':
+ print(f"# QR code for OpenConnect user '{username}'")
+ print(qrcode)
+ elif info == 'uri':
+ print(f"# URI for OpenConnect user '{username}'")
+ print(otp_url)
+
+if __name__ == '__main__':
+ parser = argparse.ArgumentParser(add_help=False, description='Show OTP authentication information for selected user')
+ parser.add_argument('--user', action="store", type=str, default='', help='Username')
+ parser.add_argument('--info', action="store", type=str, default='full', help='Wich information to display')
+
+ args = parser.parse_args()
+ check_otp = check_uname_otp(args.user)
+ if check_otp:
+ user_otp_params = get_otp_ocserv(args.user)
+ display_otp_ocserv(args.user, user_otp_params, args.info)
+ else:
+ print(f'There is no such user ("{args.user}") with an OTP key configured')