diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/op_mode/otp.py | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/op_mode/otp.py b/src/op_mode/otp.py new file mode 100755 index 000000000..c472a1ed3 --- /dev/null +++ b/src/op_mode/otp.py @@ -0,0 +1,124 @@ +#!/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 sys +import os +import vyos.opmode +from jinja2 import Template +from vyos.configquery import ConfigTreeQuery +from vyos.xml import defaults +from vyos.configdict import dict_merge +from vyos.util import popen + + +users_otp_template = Template(""" +{% if info == "full" %} +# You can share it with the user, he just needs to scan the QR in his OTP app +# username: {{username}} +# OTP KEY: {{key_base32}} +# OTP URL: {{otp_url}} +{{qrcode}} +# To add this OTP key to configuration, run the following commands: +set system login user {{username}} authentication otp key '{{key_base32}}' +{% if rate_limit != "3" %} +set system login user {{username}} authentication otp rate-limit '{{rate_limit}}' +{% endif %} +{% if rate_time != "30" %} +set system login user {{username}} authentication otp rate-time '{{rate_time}}' +{% endif %} +{% if window_size != "3" %} +set system login user {{username}} authentication otp window-size '{{window_size}}' +{% endif %} +{% elif info == "key-b32" %} +# OTP key in Base32 for system user {{username}}: +{{key_base32}} +{% elif info == "qrcode" %} +# QR code for system user '{{username}}' +{{qrcode}} +{% elif info == "uri" %} +# URI for system user '{{username}}' +{{otp_url}} +{% endif %} +""", trim_blocks=True, lstrip_blocks=True) + + +def _check_uname_otp(username:str): + """ + Check if "username" exists and have an OTP key + """ + config = ConfigTreeQuery() + base_key = ['system', 'login', 'user', username, 'authentication', 'otp', 'key'] + if not config.exists(base_key): + return None + return True + +def _get_login_otp(username: str, info:str): + """ + Retrieve user settings from configuration and set some defaults + """ + config = ConfigTreeQuery() + base = ['system', 'login', 'user', username] + if not config.exists(base): + return None + user_otp = 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(['system', 'login', 'user']) + user_otp = dict_merge(default_values, user_otp) + result = user_otp['authentication']['otp'] + # Filling in the system and default options + result['info'] = info + result['hostname'] = os.uname()[1] + result['username'] = username + result['key_base32'] = result['key'] + result['otp_length'] = '6' + result['interval'] = '30' + result['token_type'] = 'hotp-time' + if result['token_type'] == 'hotp-time': + token_type_acrn = 'totp' + result['otp_url'] = ''.join(["otpauth://",token_type_acrn,"/",username,"@",\ + result['hostname'],"?secret=",result['key_base32'],"&digits=",\ + result['otp_length'],"&period=",result['interval']]) + result['qrcode'],err = popen('qrencode -t ansiutf8', input=result['otp_url']) + return result + +def show_login(raw: bool, username: str, info:str): + ''' + Display OTP parameters for <username> + ''' + check_otp = _check_uname_otp(username) + if check_otp: + user_otp_params = _get_login_otp(username, info) + else: + print(f'There is no such user ("{username}") with an OTP key configured') + print('You can use the following command to generate a key for a user:\n') + print(f'generate system login username {username} otp-key hotp-time') + sys.exit(0) + if raw: + return user_otp_params + return users_otp_template.render(user_otp_params) + + +if __name__ == '__main__': + try: + res = vyos.opmode.run(sys.modules[__name__]) + if res: + print(res) + except (ValueError, vyos.opmode.Error) as e: + print(e) + sys.exit(1) |