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Added authorization via LDAP #1329
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| # -*- coding: utf-8 -*- | ||
| """ | ||
| proxy.py | ||
| ~~~~~~~~ | ||
| ⚡⚡⚡ Fast, Lightweight, Pluggable, TLS interception capable proxy server focused on | ||
| Network monitoring, controls & Application development, testing, debugging. | ||
|
|
||
| :copyright: (c) 2013-present by Abhinav Singh and contributors. | ||
| :license: BSD, see LICENSE for more details. | ||
|
|
||
| .. spelling:: | ||
|
|
||
| auth | ||
| http | ||
| ldap | ||
| """ | ||
| import base64 | ||
| from time import time | ||
| from typing import Dict, Optional | ||
|
|
||
| import ldap | ||
|
|
||
| from ..http import httpHeaders | ||
| from ..http.proxy import HttpProxyBasePlugin | ||
| from ..common.flag import flags | ||
| from ..http.parser import HttpParser | ||
| from ..http.exception import ProxyAuthenticationFailed | ||
|
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||
|
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||
| DEFAULT_LDAP_SERVER = 'ldap://ldap.example.org' | ||
| DEFAULT_LDAP_ROOT_DN = 'uid=Manager,ou=People,dc=example,dc=com' | ||
| DEFAULT_LDAP_ROOT_PW = 'SecretPassword' | ||
| DEFAULT_LDAP_BASE_DN = 'ou=People,dc=example,dc=com' | ||
| DEFAULT_LDAP_USER_SEARCH = '(&(uid={user})(accountStatus=active))' | ||
| DEFAULT_LDAP_AUTH_TIMEOUT = 3600 | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-server', | ||
| type=str, | ||
| default=DEFAULT_LDAP_SERVER, | ||
| help='Default: ' + DEFAULT_LDAP_SERVER + | ||
| '. LDAP server address.', | ||
| ) | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-root-dn', | ||
| type=str, | ||
| default=DEFAULT_LDAP_ROOT_DN, | ||
| help='Default: ' + DEFAULT_LDAP_ROOT_DN + | ||
| '. LDAP root dn.', | ||
| ) | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-root-pw', | ||
| type=str, | ||
| default=DEFAULT_LDAP_ROOT_PW, | ||
| help='Default: ' + DEFAULT_LDAP_ROOT_PW + | ||
| '. LDAP root password.', | ||
| ) | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-base-dn', | ||
| type=str, | ||
| default=DEFAULT_LDAP_BASE_DN, | ||
| help='Default: ' + DEFAULT_LDAP_BASE_DN + | ||
| '. LDAP users base DN.', | ||
| ) | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-user-search', | ||
| type=str, | ||
| default=DEFAULT_LDAP_USER_SEARCH, | ||
| help='Default: ' + DEFAULT_LDAP_USER_SEARCH + | ||
| '. LDAP user search filter.', | ||
| ) | ||
|
|
||
| flags.add_argument( | ||
| '--ldap-auth-timeout', | ||
| type=int, | ||
| default=DEFAULT_LDAP_AUTH_TIMEOUT, | ||
| help='Default: ' + str(DEFAULT_LDAP_AUTH_TIMEOUT) + | ||
| '. LDAP user auth timeout.', | ||
| ) | ||
|
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||
|
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| class LDAPAuthPlugin(HttpProxyBasePlugin): | ||
| """Performs proxy authentication through LDAP.""" | ||
|
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||
| __auth_pass__: Dict[bytes, float] = {} | ||
|
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||
| def auth_user(self, user: str, password: str) -> bool: | ||
| ldap_connection = ldap.initialize(self.flags.ldap_server) | ||
| ldap_connection.bind_s(self.flags.ldap_root_dn, self.flags.ldap_root_pw) | ||
| search_filter = self.flags.ldap_user_search.format(user=user) | ||
| search_result = ldap_connection.search_s(self.flags.ldap_base_dn, ldap.SCOPE_SUBTREE, search_filter, ['uid']) | ||
| if len(search_result) != 1 and len(search_result[0]) != 2: | ||
| return False | ||
| try: | ||
| ldap_connection.bind_s(search_result[0][0], password) | ||
| except ldap.LDAPError: | ||
| return False | ||
| return True | ||
|
|
||
| def before_upstream_connection( | ||
| self, request: HttpParser, | ||
| ) -> Optional[HttpParser]: | ||
| if not request.headers or httpHeaders.PROXY_AUTHORIZATION not in request.headers: | ||
| raise ProxyAuthenticationFailed() | ||
| parts = request.headers[httpHeaders.PROXY_AUTHORIZATION][1].split() | ||
| if len(parts) != 2 or parts[0].lower() != b'basic': | ||
| raise ProxyAuthenticationFailed() | ||
| elif self.__auth_pass__.get(parts[1], 0) > time(): | ||
| return request | ||
| elif self.__auth_pass__.get(parts[1], 0) < time(): | ||
| userpass = base64.b64decode(parts[1]).decode().split(':') | ||
| user = userpass[0] | ||
| password = userpass[-1] | ||
| if self.auth_user(user, password): | ||
| self.__auth_pass__[parts[1]] = time() + self.flags.ldap_auth_timeout | ||
| return request | ||
| raise ProxyAuthenticationFailed() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,3 @@ | ||
| setuptools-scm == 6.3.2 | ||
| twine==3.8.0 | ||
| python-ldap==3.4.3 | ||
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auth_ldapis just an example plugin, it's upto user to install the dependency if they choose to use this pluginOtherwise, now to install
proxy.py, users will also need to installpython-ldapeven when not using the plugin.