diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/service_webproxy.py | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/conf_mode/service_webproxy.py b/src/conf_mode/service_webproxy.py new file mode 100755 index 000000000..128393e51 --- /dev/null +++ b/src/conf_mode/service_webproxy.py @@ -0,0 +1,128 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2020 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 + +from sys import exit + +from vyos.config import Config +from vyos.configdict import dict_merge +from vyos.template import render +from vyos.util import call +from vyos.util import dict_search +from vyos.validate import is_addr_assigned +from vyos.xml import defaults +from vyos import ConfigError +from vyos import airbag +airbag.enable() + +config_file = '/etc/squid/squid.conf' + +def get_config(config=None): + if config: + conf = config + else: + conf = Config() + base = ['service', 'webproxy'] + if not conf.exists(base): + return None + + proxy = conf.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) + # if no authentication method is supplid, no need to add defaults + if not dict_search('authentication.method', proxy): + default_values.pop('authentication') + proxy = dict_merge(default_values, proxy) + + import pprint + pprint.pprint(proxy) + return proxy + + +def verify(proxy): + if not proxy: + return None + + if 'listen_address' not in proxy: + raise ConfigError('listen-address needs to be configured!') + + ldap_auth = dict_search('authentication.method', proxy) == 'ldap' + + for address, config in proxy['listen_address'].items(): + if not is_addr_assigned(address): + raise ConfigError( + f'listen-address "{address}" not assigned on any interface!') + if ldap_auth and 'disable_transparent' not in config: + raise ConfigError('Authentication can not be configured when ' \ + 'proxy is in transparent mode') + + if 'outgoing_address' in proxy: + address = proxy['outgoing_address'] + if not is_addr_assigned(address): + raise ConfigError( + f'outgoing-address "{address}" not assigned on any interface!') + + if 'authentication' in proxy: + if 'method' not in proxy['authentication']: + raise ConfigError('proxy authentication method required!') + + if ldap_auth: + ldap_config = proxy['authentication']['ldap'] + + if 'server' not in ldap_config: + raise ConfigError( + 'LDAP authentication enabled, but no server set') + + if 'password' in ldap_config and 'bind_dn' not in ldap_config: + raise ConfigError( + 'LDAP password can not be set when base-dn is undefined!') + + if 'bind_dn' in ldap_config and 'password' not in ldap_config: + raise ConfigError( + 'LDAP bind DN can not be set without password!') + + if 'base_dn' not in ldap_config: + raise ConfigError('LDAP base-dn must be set!') + +def generate(proxy): + if not proxy: + return None + + render(config_file, 'squid/squid.conf.tmpl', proxy) + return None + +def apply(proxy): + if not proxy: + # proxy is removed in the commit + call('systemctl stop squid.service') + if os.path.exists(config_file): + os.unlink(config_file) + return None + + call('systemctl restart squid.service') + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + exit(1) |