| 1 |
|
# -*- coding: utf-8 -*- |
| 2 |
|
|
| 3 |
|
# Copyright 2018 Whitestack, LLC |
| 4 |
|
# Copyright 2018 Telefonica S.A. |
| 5 |
|
# |
| 6 |
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 7 |
|
# not use this file except in compliance with the License. You may obtain |
| 8 |
|
# a copy of the License at |
| 9 |
|
# |
| 10 |
|
# http://www.apache.org/licenses/LICENSE-2.0 |
| 11 |
|
# |
| 12 |
|
# Unless required by applicable law or agreed to in writing, software |
| 13 |
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 14 |
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 15 |
|
# License for the specific language governing permissions and limitations |
| 16 |
|
# under the License. |
| 17 |
|
# |
| 18 |
|
# For those usages not covered by the Apache License, Version 2.0 please |
| 19 |
|
# contact: esousa@whitestack.com or alfonso.tiernosepulveda@telefonica.com |
| 20 |
|
## |
| 21 |
|
|
| 22 |
|
|
| 23 |
0 |
""" |
| 24 |
|
Authenticator is responsible for authenticating the users, |
| 25 |
|
create the tokens unscoped and scoped, retrieve the role |
| 26 |
|
list inside the projects that they are inserted |
| 27 |
|
""" |
| 28 |
|
|
| 29 |
0 |
__author__ = "Eduardo Sousa <esousa@whitestack.com>; Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>" |
| 30 |
0 |
__date__ = "$27-jul-2018 23:59:59$" |
| 31 |
|
|
| 32 |
0 |
import cherrypy |
| 33 |
0 |
import logging |
| 34 |
0 |
import yaml |
| 35 |
0 |
from base64 import standard_b64decode |
| 36 |
0 |
from copy import deepcopy |
| 37 |
|
|
| 38 |
|
# from functools import reduce |
| 39 |
0 |
from http import HTTPStatus |
| 40 |
0 |
from time import time |
| 41 |
0 |
from os import path |
| 42 |
|
|
| 43 |
0 |
from osm_nbi.authconn import AuthException, AuthconnException, AuthExceptionUnauthorized |
| 44 |
0 |
from osm_nbi.authconn_keystone import AuthconnKeystone |
| 45 |
0 |
from osm_nbi.authconn_internal import AuthconnInternal |
| 46 |
0 |
from osm_nbi.authconn_tacacs import AuthconnTacacs |
| 47 |
0 |
from osm_common import dbmemory, dbmongo, msglocal, msgkafka |
| 48 |
0 |
from osm_common.dbbase import DbException |
| 49 |
0 |
from osm_nbi.validation import is_valid_uuid |
| 50 |
0 |
from itertools import chain |
| 51 |
0 |
from uuid import uuid4 |
| 52 |
|
|
| 53 |
|
|
| 54 |
0 |
class Authenticator: |
| 55 |
|
""" |
| 56 |
|
This class should hold all the mechanisms for User Authentication and |
| 57 |
|
Authorization. Initially it should support Openstack Keystone as a |
| 58 |
|
backend through a plugin model where more backends can be added and a |
| 59 |
|
RBAC model to manage permissions on operations. |
| 60 |
|
This class must be threading safe |
| 61 |
|
""" |
| 62 |
|
|
| 63 |
0 |
periodin_db_pruning = ( |
| 64 |
|
60 * 30 |
| 65 |
|
) # for the internal backend only. every 30 minutes expired tokens will be pruned |
| 66 |
0 |
token_limit = 500 # when reached, the token cache will be cleared |
| 67 |
|
|
| 68 |
0 |
def __init__(self, valid_methods, valid_query_string): |
| 69 |
|
""" |
| 70 |
|
Authenticator initializer. Setup the initial state of the object, |
| 71 |
|
while it waits for the config dictionary and database initialization. |
| 72 |
|
""" |
| 73 |
0 |
self.backend = None |
| 74 |
0 |
self.config = None |
| 75 |
0 |
self.db = None |
| 76 |
0 |
self.msg = None |
| 77 |
0 |
self.tokens_cache = dict() |
| 78 |
0 |
self.next_db_prune_time = ( |
| 79 |
|
0 # time when next cleaning of expired tokens must be done |
| 80 |
|
) |
| 81 |
0 |
self.roles_to_operations_file = None |
| 82 |
|
# self.roles_to_operations_table = None |
| 83 |
0 |
self.resources_to_operations_mapping = {} |
| 84 |
0 |
self.operation_to_allowed_roles = {} |
| 85 |
0 |
self.logger = logging.getLogger("nbi.authenticator") |
| 86 |
0 |
self.role_permissions = [] |
| 87 |
0 |
self.valid_methods = valid_methods |
| 88 |
0 |
self.valid_query_string = valid_query_string |
| 89 |
0 |
self.system_admin_role_id = None # system_role id |
| 90 |
0 |
self.test_project_id = None # test_project_id |
| 91 |
|
|
| 92 |
0 |
def start(self, config): |
| 93 |
|
""" |
| 94 |
|
Method to configure the Authenticator object. This method should be called |
| 95 |
|
after object creation. It is responsible by initializing the selected backend, |
| 96 |
|
as well as the initialization of the database connection. |
| 97 |
|
|
| 98 |
|
:param config: dictionary containing the relevant parameters for this object. |
| 99 |
|
""" |
| 100 |
0 |
self.config = config |
| 101 |
|
|
| 102 |
0 |
try: |
| 103 |
0 |
if not self.db: |
| 104 |
0 |
if config["database"]["driver"] == "mongo": |
| 105 |
0 |
self.db = dbmongo.DbMongo() |
| 106 |
0 |
self.db.db_connect(config["database"]) |
| 107 |
0 |
elif config["database"]["driver"] == "memory": |
| 108 |
0 |
self.db = dbmemory.DbMemory() |
| 109 |
0 |
self.db.db_connect(config["database"]) |
| 110 |
|
else: |
| 111 |
0 |
raise AuthException( |
| 112 |
|
"Invalid configuration param '{}' at '[database]':'driver'".format( |
| 113 |
|
config["database"]["driver"] |
| 114 |
|
) |
| 115 |
|
) |
| 116 |
0 |
if not self.msg: |
| 117 |
0 |
if config["message"]["driver"] == "local": |
| 118 |
0 |
self.msg = msglocal.MsgLocal() |
| 119 |
0 |
self.msg.connect(config["message"]) |
| 120 |
0 |
elif config["message"]["driver"] == "kafka": |
| 121 |
0 |
self.msg = msgkafka.MsgKafka() |
| 122 |
0 |
self.msg.connect(config["message"]) |
| 123 |
|
else: |
| 124 |
0 |
raise AuthException( |
| 125 |
|
"Invalid configuration param '{}' at '[message]':'driver'".format( |
| 126 |
|
config["message"]["driver"] |
| 127 |
|
) |
| 128 |
|
) |
| 129 |
0 |
if not self.backend: |
| 130 |
0 |
if config["authentication"]["backend"] == "keystone": |
| 131 |
0 |
self.backend = AuthconnKeystone( |
| 132 |
|
self.config["authentication"], self.db, self.role_permissions |
| 133 |
|
) |
| 134 |
0 |
elif config["authentication"]["backend"] == "internal": |
| 135 |
0 |
self.backend = AuthconnInternal( |
| 136 |
|
self.config["authentication"], self.db, self.role_permissions |
| 137 |
|
) |
| 138 |
0 |
self._internal_tokens_prune("tokens") |
| 139 |
0 |
elif config["authentication"]["backend"] == "tacacs": |
| 140 |
0 |
self.backend = AuthconnTacacs( |
| 141 |
|
self.config["authentication"], self.db, self.role_permissions |
| 142 |
|
) |
| 143 |
0 |
self._internal_tokens_prune("tokens_tacacs") |
| 144 |
|
else: |
| 145 |
0 |
raise AuthException( |
| 146 |
|
"Unknown authentication backend: {}".format( |
| 147 |
|
config["authentication"]["backend"] |
| 148 |
|
) |
| 149 |
|
) |
| 150 |
|
|
| 151 |
0 |
if not self.roles_to_operations_file: |
| 152 |
0 |
if "roles_to_operations" in config["rbac"]: |
| 153 |
0 |
self.roles_to_operations_file = config["rbac"][ |
| 154 |
|
"roles_to_operations" |
| 155 |
|
] |
| 156 |
|
else: |
| 157 |
0 |
possible_paths = ( |
| 158 |
|
__file__[: __file__.rfind("auth.py")] |
| 159 |
|
+ "roles_to_operations.yml", |
| 160 |
|
"./roles_to_operations.yml", |
| 161 |
|
) |
| 162 |
0 |
for config_file in possible_paths: |
| 163 |
0 |
if path.isfile(config_file): |
| 164 |
0 |
self.roles_to_operations_file = config_file |
| 165 |
0 |
break |
| 166 |
0 |
if not self.roles_to_operations_file: |
| 167 |
0 |
raise AuthException( |
| 168 |
|
"Invalid permission configuration: roles_to_operations file missing" |
| 169 |
|
) |
| 170 |
|
|
| 171 |
|
# load role_permissions |
| 172 |
0 |
def load_role_permissions(method_dict): |
| 173 |
0 |
for k in method_dict: |
| 174 |
0 |
if k == "ROLE_PERMISSION": |
| 175 |
0 |
for method in chain( |
| 176 |
|
method_dict.get("METHODS", ()), method_dict.get("TODO", ()) |
| 177 |
|
): |
| 178 |
0 |
permission = method_dict["ROLE_PERMISSION"] + method.lower() |
| 179 |
0 |
if permission not in self.role_permissions: |
| 180 |
0 |
self.role_permissions.append(permission) |
| 181 |
0 |
elif k in ("TODO", "METHODS"): |
| 182 |
0 |
continue |
| 183 |
0 |
elif method_dict[k]: |
| 184 |
0 |
load_role_permissions(method_dict[k]) |
| 185 |
|
|
| 186 |
0 |
load_role_permissions(self.valid_methods) |
| 187 |
0 |
for query_string in self.valid_query_string: |
| 188 |
0 |
for method in ("get", "put", "patch", "post", "delete"): |
| 189 |
0 |
permission = query_string.lower() + ":" + method |
| 190 |
0 |
if permission not in self.role_permissions: |
| 191 |
0 |
self.role_permissions.append(permission) |
| 192 |
|
|
| 193 |
|
# get ids of role system_admin and test project |
| 194 |
0 |
role_system_admin = self.db.get_one( |
| 195 |
|
"roles", {"name": "system_admin"}, fail_on_empty=False |
| 196 |
|
) |
| 197 |
0 |
if role_system_admin: |
| 198 |
0 |
self.system_admin_role_id = role_system_admin["_id"] |
| 199 |
0 |
test_project_name = self.config["authentication"].get( |
| 200 |
|
"project_not_authorized", "admin" |
| 201 |
|
) |
| 202 |
0 |
test_project = self.db.get_one( |
| 203 |
|
"projects", {"name": test_project_name}, fail_on_empty=False |
| 204 |
|
) |
| 205 |
0 |
if test_project: |
| 206 |
0 |
self.test_project_id = test_project["_id"] |
| 207 |
|
|
| 208 |
0 |
except Exception as e: |
| 209 |
0 |
raise AuthException(str(e)) |
| 210 |
|
|
| 211 |
0 |
def stop(self): |
| 212 |
0 |
try: |
| 213 |
0 |
if self.db: |
| 214 |
0 |
self.db.db_disconnect() |
| 215 |
0 |
except DbException as e: |
| 216 |
0 |
raise AuthException(str(e), http_code=e.http_code) |
| 217 |
|
|
| 218 |
0 |
def create_admin_project(self): |
| 219 |
|
""" |
| 220 |
|
Creates a new project 'admin' into database if it doesn't exist. Useful for initialization. |
| 221 |
|
:return: _id identity of the 'admin' project |
| 222 |
|
""" |
| 223 |
|
|
| 224 |
|
# projects = self.db.get_one("projects", fail_on_empty=False, fail_on_more=False) |
| 225 |
0 |
project_desc = {"name": "admin"} |
| 226 |
0 |
projects = self.backend.get_project_list(project_desc) |
| 227 |
0 |
if projects: |
| 228 |
0 |
return projects[0]["_id"] |
| 229 |
0 |
now = time() |
| 230 |
0 |
project_desc["_id"] = str(uuid4()) |
| 231 |
0 |
project_desc["_admin"] = {"created": now, "modified": now} |
| 232 |
0 |
pid = self.backend.create_project(project_desc) |
| 233 |
0 |
self.logger.info( |
| 234 |
|
"Project '{}' created at database".format(project_desc["name"]) |
| 235 |
|
) |
| 236 |
0 |
return pid |
| 237 |
|
|
| 238 |
0 |
def create_admin_user(self, project_id): |
| 239 |
|
""" |
| 240 |
|
Creates a new user admin/admin into database if database is empty. Useful for initialization |
| 241 |
|
:return: _id identity of the inserted data, or None |
| 242 |
|
""" |
| 243 |
|
# users = self.db.get_one("users", fail_on_empty=False, fail_on_more=False) |
| 244 |
0 |
users = self.backend.get_user_list() |
| 245 |
0 |
if users: |
| 246 |
0 |
return None |
| 247 |
|
# user_desc = {"username": "admin", "password": "admin", "projects": [project_id]} |
| 248 |
0 |
now = time() |
| 249 |
0 |
user_desc = { |
| 250 |
|
"username": "admin", |
| 251 |
|
"password": "admin", |
| 252 |
|
"_admin": {"created": now, "modified": now}, |
| 253 |
|
} |
| 254 |
0 |
if project_id: |
| 255 |
0 |
pid = project_id |
| 256 |
|
else: |
| 257 |
|
# proj = self.db.get_one("projects", {"name": "admin"}, fail_on_empty=False, fail_on_more=False) |
| 258 |
0 |
proj = self.backend.get_project_list({"name": "admin"}) |
| 259 |
0 |
pid = proj[0]["_id"] if proj else None |
| 260 |
|
# role = self.db.get_one("roles", {"name": "system_admin"}, fail_on_empty=False, fail_on_more=False) |
| 261 |
0 |
roles = self.backend.get_role_list({"name": "system_admin"}) |
| 262 |
0 |
if pid and roles: |
| 263 |
0 |
user_desc["project_role_mappings"] = [ |
| 264 |
|
{"project": pid, "role": roles[0]["_id"]} |
| 265 |
|
] |
| 266 |
0 |
uid = self.backend.create_user(user_desc) |
| 267 |
0 |
self.logger.info("User '{}' created at database".format(user_desc["username"])) |
| 268 |
0 |
return uid |
| 269 |
|
|
| 270 |
0 |
def init_db(self, target_version="1.0"): |
| 271 |
|
""" |
| 272 |
|
Check if the database has been initialized, with at least one user. If not, create the required tables |
| 273 |
|
and insert the predefined mappings between roles and permissions. |
| 274 |
|
|
| 275 |
|
:param target_version: schema version that should be present in the database. |
| 276 |
|
:return: None if OK, exception if error or version is different. |
| 277 |
|
""" |
| 278 |
|
|
| 279 |
0 |
records = self.backend.get_role_list() |
| 280 |
|
|
| 281 |
|
# Loading permissions to AUTH. At lease system_admin must be present. |
| 282 |
0 |
if not records or not next( |
| 283 |
|
(r for r in records if r["name"] == "system_admin"), None |
| 284 |
|
): |
| 285 |
0 |
with open(self.roles_to_operations_file, "r") as stream: |
| 286 |
0 |
roles_to_operations_yaml = yaml.load(stream, Loader=yaml.Loader) |
| 287 |
|
|
| 288 |
0 |
role_names = [] |
| 289 |
0 |
for role_with_operations in roles_to_operations_yaml["roles"]: |
| 290 |
|
# Verifying if role already exists. If it does, raise exception |
| 291 |
0 |
if role_with_operations["name"] not in role_names: |
| 292 |
0 |
role_names.append(role_with_operations["name"]) |
| 293 |
|
else: |
| 294 |
0 |
raise AuthException( |
| 295 |
|
"Duplicated role name '{}' at file '{}''".format( |
| 296 |
|
role_with_operations["name"], self.roles_to_operations_file |
| 297 |
|
) |
| 298 |
|
) |
| 299 |
|
|
| 300 |
0 |
if not role_with_operations["permissions"]: |
| 301 |
0 |
continue |
| 302 |
|
|
| 303 |
0 |
for permission, is_allowed in role_with_operations[ |
| 304 |
|
"permissions" |
| 305 |
|
].items(): |
| 306 |
0 |
if not isinstance(is_allowed, bool): |
| 307 |
0 |
raise AuthException( |
| 308 |
|
"Invalid value for permission '{}' at role '{}'; at file '{}'".format( |
| 309 |
|
permission, |
| 310 |
|
role_with_operations["name"], |
| 311 |
|
self.roles_to_operations_file, |
| 312 |
|
) |
| 313 |
|
) |
| 314 |
|
|
| 315 |
|
# TODO check permission is ok |
| 316 |
0 |
if permission[-1] == ":": |
| 317 |
0 |
raise AuthException( |
| 318 |
|
"Invalid permission '{}' terminated in ':' for role '{}'; at file {}".format( |
| 319 |
|
permission, |
| 320 |
|
role_with_operations["name"], |
| 321 |
|
self.roles_to_operations_file, |
| 322 |
|
) |
| 323 |
|
) |
| 324 |
|
|
| 325 |
0 |
if "default" not in role_with_operations["permissions"]: |
| 326 |
0 |
role_with_operations["permissions"]["default"] = False |
| 327 |
0 |
if "admin" not in role_with_operations["permissions"]: |
| 328 |
0 |
role_with_operations["permissions"]["admin"] = False |
| 329 |
|
|
| 330 |
0 |
now = time() |
| 331 |
0 |
role_with_operations["_admin"] = { |
| 332 |
|
"created": now, |
| 333 |
|
"modified": now, |
| 334 |
|
} |
| 335 |
|
|
| 336 |
|
# self.db.create(self.roles_to_operations_table, role_with_operations) |
| 337 |
0 |
try: |
| 338 |
0 |
self.backend.create_role(role_with_operations) |
| 339 |
0 |
self.logger.info( |
| 340 |
|
"Role '{}' created".format(role_with_operations["name"]) |
| 341 |
|
) |
| 342 |
0 |
except (AuthException, AuthconnException) as e: |
| 343 |
0 |
if role_with_operations["name"] == "system_admin": |
| 344 |
0 |
raise |
| 345 |
0 |
self.logger.error( |
| 346 |
|
"Role '{}' cannot be created: {}".format( |
| 347 |
|
role_with_operations["name"], e |
| 348 |
|
) |
| 349 |
|
) |
| 350 |
|
|
| 351 |
|
# Create admin project&user if required |
| 352 |
0 |
pid = self.create_admin_project() |
| 353 |
0 |
user_id = self.create_admin_user(pid) |
| 354 |
|
|
| 355 |
|
# try to assign system_admin role to user admin if not any user has this role |
| 356 |
0 |
if not user_id: |
| 357 |
0 |
try: |
| 358 |
0 |
users = self.backend.get_user_list() |
| 359 |
0 |
roles = self.backend.get_role_list({"name": "system_admin"}) |
| 360 |
0 |
role_id = roles[0]["_id"] |
| 361 |
0 |
user_with_system_admin = False |
| 362 |
0 |
user_admin_id = None |
| 363 |
0 |
for user in users: |
| 364 |
0 |
if not user_admin_id: |
| 365 |
0 |
user_admin_id = user["_id"] |
| 366 |
0 |
if user["username"] == "admin": |
| 367 |
0 |
user_admin_id = user["_id"] |
| 368 |
0 |
for prm in user.get("project_role_mappings", ()): |
| 369 |
0 |
if prm["role"] == role_id: |
| 370 |
0 |
user_with_system_admin = True |
| 371 |
0 |
break |
| 372 |
0 |
if user_with_system_admin: |
| 373 |
0 |
break |
| 374 |
0 |
if not user_with_system_admin: |
| 375 |
0 |
self.backend.update_user( |
| 376 |
|
{ |
| 377 |
|
"_id": user_admin_id, |
| 378 |
|
"add_project_role_mappings": [ |
| 379 |
|
{"project": pid, "role": role_id} |
| 380 |
|
], |
| 381 |
|
} |
| 382 |
|
) |
| 383 |
0 |
self.logger.info( |
| 384 |
|
"Added role system admin to user='{}' project=admin".format( |
| 385 |
|
user_admin_id |
| 386 |
|
) |
| 387 |
|
) |
| 388 |
0 |
except Exception as e: |
| 389 |
0 |
self.logger.error( |
| 390 |
|
"Error in Authorization DataBase initialization: {}: {}".format( |
| 391 |
|
type(e).__name__, e |
| 392 |
|
) |
| 393 |
|
) |
| 394 |
|
|
| 395 |
0 |
self.load_operation_to_allowed_roles() |
| 396 |
|
|
| 397 |
0 |
def load_operation_to_allowed_roles(self): |
| 398 |
|
""" |
| 399 |
|
Fills the internal self.operation_to_allowed_roles based on database role content and self.role_permissions |
| 400 |
|
It works in a shadow copy and replace at the end to allow other threads working with the old copy |
| 401 |
|
:return: None |
| 402 |
|
""" |
| 403 |
0 |
permissions = {oper: [] for oper in self.role_permissions} |
| 404 |
|
# records = self.db.get_list(self.roles_to_operations_table) |
| 405 |
0 |
records = self.backend.get_role_list() |
| 406 |
|
|
| 407 |
0 |
ignore_fields = ["_id", "_admin", "name", "default"] |
| 408 |
0 |
for record in records: |
| 409 |
0 |
if not record.get("permissions"): |
| 410 |
0 |
continue |
| 411 |
0 |
record_permissions = { |
| 412 |
|
oper: record["permissions"].get("default", False) |
| 413 |
|
for oper in self.role_permissions |
| 414 |
|
} |
| 415 |
0 |
operations_joined = [ |
| 416 |
|
(oper, value) |
| 417 |
|
for oper, value in record["permissions"].items() |
| 418 |
|
if oper not in ignore_fields |
| 419 |
|
] |
| 420 |
0 |
operations_joined.sort(key=lambda x: x[0].count(":")) |
| 421 |
|
|
| 422 |
0 |
for oper in operations_joined: |
| 423 |
0 |
match = list( |
| 424 |
|
filter(lambda x: x.find(oper[0]) == 0, record_permissions.keys()) |
| 425 |
|
) |
| 426 |
|
|
| 427 |
0 |
for m in match: |
| 428 |
0 |
record_permissions[m] = oper[1] |
| 429 |
|
|
| 430 |
0 |
allowed_operations = [k for k, v in record_permissions.items() if v is True] |
| 431 |
|
|
| 432 |
0 |
for allowed_op in allowed_operations: |
| 433 |
0 |
permissions[allowed_op].append(record["name"]) |
| 434 |
|
|
| 435 |
0 |
self.operation_to_allowed_roles = permissions |
| 436 |
|
|
| 437 |
0 |
def authorize( |
| 438 |
|
self, role_permission=None, query_string_operations=None, item_id=None |
| 439 |
|
): |
| 440 |
0 |
token = None |
| 441 |
0 |
user_passwd64 = None |
| 442 |
0 |
try: |
| 443 |
|
# 1. Get token Authorization bearer |
| 444 |
0 |
auth = cherrypy.request.headers.get("Authorization") |
| 445 |
0 |
if auth: |
| 446 |
0 |
auth_list = auth.split(" ") |
| 447 |
0 |
if auth_list[0].lower() == "bearer": |
| 448 |
0 |
token = auth_list[-1] |
| 449 |
0 |
elif auth_list[0].lower() == "basic": |
| 450 |
0 |
user_passwd64 = auth_list[-1] |
| 451 |
0 |
if not token: |
| 452 |
0 |
if cherrypy.session.get("Authorization"): |
| 453 |
|
# 2. Try using session before request a new token. If not, basic authentication will generate |
| 454 |
0 |
token = cherrypy.session.get("Authorization") |
| 455 |
0 |
if token == "logout": |
| 456 |
0 |
token = None # force Unauthorized response to insert user password again |
| 457 |
0 |
elif user_passwd64 and cherrypy.request.config.get( |
| 458 |
|
"auth.allow_basic_authentication" |
| 459 |
|
): |
| 460 |
|
# 3. Get new token from user password |
| 461 |
0 |
user = None |
| 462 |
0 |
passwd = None |
| 463 |
0 |
try: |
| 464 |
0 |
user_passwd = standard_b64decode(user_passwd64).decode() |
| 465 |
0 |
user, _, passwd = user_passwd.partition(":") |
| 466 |
0 |
except Exception: |
| 467 |
0 |
pass |
| 468 |
0 |
outdata = self.new_token( |
| 469 |
|
None, {"username": user, "password": passwd} |
| 470 |
|
) |
| 471 |
0 |
token = outdata["_id"] |
| 472 |
0 |
cherrypy.session["Authorization"] = token |
| 473 |
|
|
| 474 |
0 |
if not token: |
| 475 |
0 |
raise AuthException( |
| 476 |
|
"Needed a token or Authorization http header", |
| 477 |
|
http_code=HTTPStatus.UNAUTHORIZED, |
| 478 |
|
) |
| 479 |
|
|
| 480 |
|
# try to get from cache first |
| 481 |
0 |
now = time() |
| 482 |
0 |
token_info = self.tokens_cache.get(token) |
| 483 |
0 |
if token_info and token_info["expires"] < now: |
| 484 |
|
# delete token. MUST be done with care, as another thread maybe already delete it. Do not use del |
| 485 |
0 |
self.tokens_cache.pop(token, None) |
| 486 |
0 |
token_info = None |
| 487 |
|
|
| 488 |
|
# get from database if not in cache |
| 489 |
0 |
if not token_info: |
| 490 |
0 |
token_info = self.backend.validate_token(token) |
| 491 |
|
# Clear cache if token limit reached |
| 492 |
0 |
if len(self.tokens_cache) > self.token_limit: |
| 493 |
0 |
self.tokens_cache.clear() |
| 494 |
0 |
self.tokens_cache[token] = token_info |
| 495 |
|
# TODO add to token info remote host, port |
| 496 |
|
|
| 497 |
0 |
if role_permission: |
| 498 |
0 |
RBAC_auth = self.check_permissions( |
| 499 |
|
token_info, |
| 500 |
|
cherrypy.request.method, |
| 501 |
|
role_permission, |
| 502 |
|
query_string_operations, |
| 503 |
|
item_id, |
| 504 |
|
) |
| 505 |
0 |
self.logger.info("RBAC_auth: {}".format(RBAC_auth)) |
| 506 |
0 |
token_info["allow_show_user_project_role"] = RBAC_auth |
| 507 |
|
|
| 508 |
0 |
return token_info |
| 509 |
0 |
except AuthException as e: |
| 510 |
0 |
if not isinstance(e, AuthExceptionUnauthorized): |
| 511 |
0 |
if cherrypy.session.get("Authorization"): |
| 512 |
0 |
del cherrypy.session["Authorization"] |
| 513 |
0 |
cherrypy.response.headers[ |
| 514 |
|
"WWW-Authenticate" |
| 515 |
|
] = 'Bearer realm="{}"'.format(e) |
| 516 |
0 |
if self.config["authentication"].get("user_not_authorized"): |
| 517 |
0 |
return { |
| 518 |
|
"id": "testing-token", |
| 519 |
|
"_id": "testing-token", |
| 520 |
|
"project_id": self.test_project_id, |
| 521 |
|
"username": self.config["authentication"]["user_not_authorized"], |
| 522 |
|
"roles": [self.system_admin_role_id], |
| 523 |
|
"admin": True, |
| 524 |
|
"allow_show_user_project_role": True, |
| 525 |
|
} |
| 526 |
0 |
raise |
| 527 |
|
|
| 528 |
0 |
def new_token(self, token_info, indata, remote): |
| 529 |
0 |
new_token_info = self.backend.authenticate( |
| 530 |
|
credentials=indata, |
| 531 |
|
token_info=token_info, |
| 532 |
|
) |
| 533 |
|
|
| 534 |
0 |
new_token_info["remote_port"] = remote.port |
| 535 |
0 |
if not new_token_info.get("expires"): |
| 536 |
0 |
new_token_info["expires"] = time() + 3600 |
| 537 |
0 |
if not new_token_info.get("admin"): |
| 538 |
0 |
new_token_info["admin"] = ( |
| 539 |
|
True if new_token_info.get("project_name") == "admin" else False |
| 540 |
|
) |
| 541 |
|
# TODO put admin in RBAC |
| 542 |
|
|
| 543 |
0 |
if remote.name: |
| 544 |
0 |
new_token_info["remote_host"] = remote.name |
| 545 |
0 |
elif remote.ip: |
| 546 |
0 |
new_token_info["remote_host"] = remote.ip |
| 547 |
|
|
| 548 |
|
# TODO call self._internal_tokens_prune(now) ? |
| 549 |
0 |
return deepcopy(new_token_info) |
| 550 |
|
|
| 551 |
0 |
def get_token_list(self, token_info): |
| 552 |
0 |
if self.config["authentication"]["backend"] == "internal": |
| 553 |
0 |
return self._internal_get_token_list(token_info) |
| 554 |
|
else: |
| 555 |
|
# TODO: check if this can be avoided. Backend may provide enough information |
| 556 |
0 |
return [ |
| 557 |
|
deepcopy(token) |
| 558 |
|
for token in self.tokens_cache.values() |
| 559 |
|
if token["username"] == token_info["username"] |
| 560 |
|
] |
| 561 |
|
|
| 562 |
0 |
def get_token(self, token_info, token): |
| 563 |
0 |
if self.config["authentication"]["backend"] == "internal": |
| 564 |
0 |
return self._internal_get_token(token_info, token) |
| 565 |
|
else: |
| 566 |
|
# TODO: check if this can be avoided. Backend may provide enough information |
| 567 |
0 |
token_value = self.tokens_cache.get(token) |
| 568 |
0 |
if not token_value: |
| 569 |
0 |
raise AuthException("token not found", http_code=HTTPStatus.NOT_FOUND) |
| 570 |
0 |
if ( |
| 571 |
|
token_value["username"] != token_info["username"] |
| 572 |
|
and not token_info["admin"] |
| 573 |
|
): |
| 574 |
0 |
raise AuthException( |
| 575 |
|
"needed admin privileges", http_code=HTTPStatus.UNAUTHORIZED |
| 576 |
|
) |
| 577 |
0 |
return token_value |
| 578 |
|
|
| 579 |
0 |
def del_token(self, token): |
| 580 |
0 |
try: |
| 581 |
0 |
self.backend.revoke_token(token) |
| 582 |
|
# self.tokens_cache.pop(token, None) |
| 583 |
0 |
self.remove_token_from_cache(token) |
| 584 |
0 |
return "token '{}' deleted".format(token) |
| 585 |
0 |
except KeyError: |
| 586 |
0 |
raise AuthException( |
| 587 |
|
"Token '{}' not found".format(token), http_code=HTTPStatus.NOT_FOUND |
| 588 |
|
) |
| 589 |
|
|
| 590 |
0 |
def check_permissions( |
| 591 |
|
self, |
| 592 |
|
token_info, |
| 593 |
|
method, |
| 594 |
|
role_permission=None, |
| 595 |
|
query_string_operations=None, |
| 596 |
|
item_id=None, |
| 597 |
|
): |
| 598 |
|
""" |
| 599 |
|
Checks that operation has permissions to be done, base on the assigned roles to this user project |
| 600 |
|
:param token_info: Dictionary that contains "roles" with a list of assigned roles. |
| 601 |
|
This method fills the token_info["admin"] with True or False based on assigned tokens, if any allows admin |
| 602 |
|
This will be used among others to hide or not the _admin content of topics |
| 603 |
|
:param method: GET,PUT, POST, ... |
| 604 |
|
:param role_permission: role permission name of the operation required |
| 605 |
|
:param query_string_operations: list of possible admin query strings provided by user. It is checked that the |
| 606 |
|
assigned role allows this query string for this method |
| 607 |
|
:param item_id: item identifier if included in the URL, None otherwise |
| 608 |
|
:return: True if access granted by permission rules, False if access granted by default rules (Bug 853) |
| 609 |
|
:raises: AuthExceptionUnauthorized if access denied |
| 610 |
|
""" |
| 611 |
0 |
self.load_operation_to_allowed_roles() |
| 612 |
|
|
| 613 |
0 |
roles_required = self.operation_to_allowed_roles[role_permission] |
| 614 |
0 |
roles_allowed = [role["name"] for role in token_info["roles"]] |
| 615 |
|
|
| 616 |
|
# fills token_info["admin"] if some roles allows it |
| 617 |
0 |
token_info["admin"] = False |
| 618 |
0 |
for role in roles_allowed: |
| 619 |
0 |
if role in self.operation_to_allowed_roles["admin:" + method.lower()]: |
| 620 |
0 |
token_info["admin"] = True |
| 621 |
0 |
break |
| 622 |
|
|
| 623 |
0 |
if "anonymous" in roles_required: |
| 624 |
0 |
return True |
| 625 |
0 |
operation_allowed = False |
| 626 |
0 |
for role in roles_allowed: |
| 627 |
0 |
if role in roles_required: |
| 628 |
0 |
operation_allowed = True |
| 629 |
|
# if query_string operations, check if this role allows it |
| 630 |
0 |
if not query_string_operations: |
| 631 |
0 |
return True |
| 632 |
0 |
for query_string_operation in query_string_operations: |
| 633 |
0 |
if ( |
| 634 |
|
role |
| 635 |
|
not in self.operation_to_allowed_roles[query_string_operation] |
| 636 |
|
): |
| 637 |
0 |
break |
| 638 |
|
else: |
| 639 |
0 |
return True |
| 640 |
|
|
| 641 |
|
# Bug 853 - Final Solution |
| 642 |
|
# User/Project/Role whole listings are filtered elsewhere |
| 643 |
|
# uid, pid, rid = ("user_id", "project_id", "id") if is_valid_uuid(id) else ("username", "project_name", "name") |
| 644 |
0 |
uid = "user_id" if is_valid_uuid(item_id) else "username" |
| 645 |
0 |
if ( |
| 646 |
|
role_permission |
| 647 |
|
in [ |
| 648 |
|
"projects:get", |
| 649 |
|
"projects:id:get", |
| 650 |
|
"roles:get", |
| 651 |
|
"roles:id:get", |
| 652 |
|
"users:get", |
| 653 |
|
] |
| 654 |
|
) or (role_permission == "users:id:get" and item_id == token_info[uid]): |
| 655 |
|
# or (role_permission == "projects:id:get" and item_id == token_info[pid]) \ |
| 656 |
|
# or (role_permission == "roles:id:get" and item_id in [role[rid] for role in token_info["roles"]]): |
| 657 |
0 |
return False |
| 658 |
|
|
| 659 |
0 |
if not operation_allowed: |
| 660 |
0 |
raise AuthExceptionUnauthorized("Access denied: lack of permissions.") |
| 661 |
|
else: |
| 662 |
0 |
raise AuthExceptionUnauthorized( |
| 663 |
|
"Access denied: You have not permissions to use these admin query string" |
| 664 |
|
) |
| 665 |
|
|
| 666 |
0 |
def get_user_list(self): |
| 667 |
0 |
return self.backend.get_user_list() |
| 668 |
|
|
| 669 |
0 |
def _normalize_url(self, url, method): |
| 670 |
|
# DEPRECATED !!! |
| 671 |
|
# Removing query strings |
| 672 |
0 |
normalized_url = url if "?" not in url else url[: url.find("?")] |
| 673 |
0 |
normalized_url_splitted = normalized_url.split("/") |
| 674 |
0 |
parameters = {} |
| 675 |
|
|
| 676 |
0 |
filtered_keys = [ |
| 677 |
|
key |
| 678 |
|
for key in self.resources_to_operations_mapping.keys() |
| 679 |
|
if method in key.split()[0] |
| 680 |
|
] |
| 681 |
|
|
| 682 |
0 |
for idx, path_part in enumerate(normalized_url_splitted): |
| 683 |
0 |
tmp_keys = [] |
| 684 |
0 |
for tmp_key in filtered_keys: |
| 685 |
0 |
splitted = tmp_key.split()[1].split("/") |
| 686 |
0 |
if idx >= len(splitted): |
| 687 |
0 |
continue |
| 688 |
0 |
elif "<" in splitted[idx] and ">" in splitted[idx]: |
| 689 |
0 |
if splitted[idx] == "<artifactPath>": |
| 690 |
0 |
tmp_keys.append(tmp_key) |
| 691 |
0 |
continue |
| 692 |
0 |
elif idx == len(normalized_url_splitted) - 1 and len( |
| 693 |
|
normalized_url_splitted |
| 694 |
|
) != len(splitted): |
| 695 |
0 |
continue |
| 696 |
|
else: |
| 697 |
0 |
tmp_keys.append(tmp_key) |
| 698 |
0 |
elif splitted[idx] == path_part: |
| 699 |
0 |
if idx == len(normalized_url_splitted) - 1 and len( |
| 700 |
|
normalized_url_splitted |
| 701 |
|
) != len(splitted): |
| 702 |
0 |
continue |
| 703 |
|
else: |
| 704 |
0 |
tmp_keys.append(tmp_key) |
| 705 |
0 |
filtered_keys = tmp_keys |
| 706 |
0 |
if ( |
| 707 |
|
len(filtered_keys) == 1 |
| 708 |
|
and filtered_keys[0].split("/")[-1] == "<artifactPath>" |
| 709 |
|
): |
| 710 |
0 |
break |
| 711 |
|
|
| 712 |
0 |
if len(filtered_keys) == 0: |
| 713 |
0 |
raise AuthException( |
| 714 |
|
"Cannot make an authorization decision. URL not found. URL: {0}".format( |
| 715 |
|
url |
| 716 |
|
) |
| 717 |
|
) |
| 718 |
0 |
elif len(filtered_keys) > 1: |
| 719 |
0 |
raise AuthException( |
| 720 |
|
"Cannot make an authorization decision. Multiple URLs found. URL: {0}".format( |
| 721 |
|
url |
| 722 |
|
) |
| 723 |
|
) |
| 724 |
|
|
| 725 |
0 |
filtered_key = filtered_keys[0] |
| 726 |
|
|
| 727 |
0 |
for idx, path_part in enumerate(filtered_key.split()[1].split("/")): |
| 728 |
0 |
if "<" in path_part and ">" in path_part: |
| 729 |
0 |
if path_part == "<artifactPath>": |
| 730 |
0 |
parameters[path_part[1:-1]] = "/".join( |
| 731 |
|
normalized_url_splitted[idx:] |
| 732 |
|
) |
| 733 |
|
else: |
| 734 |
0 |
parameters[path_part[1:-1]] = normalized_url_splitted[idx] |
| 735 |
|
|
| 736 |
0 |
return filtered_key, parameters |
| 737 |
|
|
| 738 |
0 |
def _internal_get_token_list(self, token_info): |
| 739 |
0 |
now = time() |
| 740 |
0 |
token_list = self.db.get_list( |
| 741 |
|
"tokens", {"username": token_info["username"], "expires.gt": now} |
| 742 |
|
) |
| 743 |
0 |
return token_list |
| 744 |
|
|
| 745 |
0 |
def _internal_get_token(self, token_info, token_id): |
| 746 |
0 |
token_value = self.db.get_one("tokens", {"_id": token_id}, fail_on_empty=False) |
| 747 |
0 |
if not token_value: |
| 748 |
0 |
raise AuthException("token not found", http_code=HTTPStatus.NOT_FOUND) |
| 749 |
0 |
if ( |
| 750 |
|
token_value["username"] != token_info["username"] |
| 751 |
|
and not token_info["admin"] |
| 752 |
|
): |
| 753 |
0 |
raise AuthException( |
| 754 |
|
"needed admin privileges", http_code=HTTPStatus.UNAUTHORIZED |
| 755 |
|
) |
| 756 |
0 |
return token_value |
| 757 |
|
|
| 758 |
0 |
def _internal_tokens_prune(self, token_collection, now=None): |
| 759 |
0 |
now = now or time() |
| 760 |
0 |
if not self.next_db_prune_time or self.next_db_prune_time >= now: |
| 761 |
0 |
self.db.del_list(token_collection, {"expires.lt": now}) |
| 762 |
0 |
self.next_db_prune_time = self.periodin_db_pruning + now |
| 763 |
|
# self.tokens_cache.clear() # not required any more |
| 764 |
|
|
| 765 |
0 |
def remove_token_from_cache(self, token=None): |
| 766 |
0 |
if token: |
| 767 |
0 |
self.tokens_cache.pop(token, None) |
| 768 |
|
else: |
| 769 |
0 |
self.tokens_cache.clear() |
| 770 |
0 |
self.msg.write("admin", "revoke_token", {"_id": token} if token else None) |
| 771 |
|
|
| 772 |
0 |
def check_password_expiry(self, outdata): |
| 773 |
|
""" |
| 774 |
|
This method will check for password expiry of the user |
| 775 |
|
:param outdata: user token information |
| 776 |
|
""" |
| 777 |
0 |
user_content = None |
| 778 |
0 |
detail = {} |
| 779 |
0 |
present_time = time() |
| 780 |
0 |
user = outdata["username"] |
| 781 |
0 |
if self.config["authentication"].get("pwd_expiry_check"): |
| 782 |
0 |
user_content = self.db.get_list("users", {"username": user})[0] |
| 783 |
0 |
if not user_content.get("username") == "admin": |
| 784 |
0 |
user_content["_admin"]["modified_time"] = present_time |
| 785 |
0 |
if user_content.get("_admin").get("expire_time"): |
| 786 |
0 |
expire_time = user_content["_admin"]["expire_time"] |
| 787 |
|
else: |
| 788 |
0 |
expire_time = present_time |
| 789 |
0 |
uid = user_content["_id"] |
| 790 |
0 |
self.db.set_one("users", {"_id": uid}, user_content) |
| 791 |
0 |
if not present_time < expire_time: |
| 792 |
0 |
return True |
| 793 |
|
else: |
| 794 |
0 |
pass |
![[Jenkins]](/jenkins/static/c06f6c43/images/jenkins-header-logo-v2.svg){kind=logo}
