from base64 import standard_b64decode
from copy import deepcopy
# from functools import reduce
-from hashlib import sha256
from http import HTTPStatus
-from random import choice as random_choice
from time import time
from os import path
-from base_topic import BaseTopic # To allow project names in project_id
from authconn import AuthException, AuthExceptionUnauthorized
from authconn_keystone import AuthconnKeystone
+from authconn_internal import AuthconnInternal # Comment out for testing&debugging, uncomment when ready
from osm_common import dbmongo
from osm_common import dbmemory
from osm_common.dbbase import DbException
+from uuid import uuid4 # For Role _id with internal authentication backend
+
class Authenticator:
"""
self.next_db_prune_time = 0 # time when next cleaning of expired tokens must be done
self.resources_to_operations_file = None
self.roles_to_operations_file = None
+ self.roles_to_operations_table = None
self.resources_to_operations_mapping = {}
self.operation_to_allowed_roles = {}
self.logger = logging.getLogger("nbi.authenticator")
if config["authentication"]["backend"] == "keystone":
self.backend = AuthconnKeystone(self.config["authentication"])
elif config["authentication"]["backend"] == "internal":
+ self.backend = AuthconnInternal(self.config["authentication"], self.db, self.tokens_cache)
self._internal_tokens_prune()
else:
raise AuthException("Unknown authentication backend: {}"
break
if not self.roles_to_operations_file:
raise AuthException("Invalid permission configuration: roles_to_operations file missing")
+ if not self.roles_to_operations_table: # PROVISIONAL ?
+ self.roles_to_operations_table = "roles_operations" \
+ if config["authentication"]["backend"] == "keystone" \
+ else "roles"
except Exception as e:
raise AuthException(str(e))
# Always reads operation to resource mapping from file (this is static, no need to store it in MongoDB)
# Operations encoding: "<METHOD> <URL>"
# Note: it is faster to rewrite the value than to check if it is already there or not
- if self.config["authentication"]["backend"] == "internal":
- return
+
+ # PCR 28/05/2019 Commented out to allow initialization for internal backend
+ # if self.config["authentication"]["backend"] == "internal":
+ # return
with open(self.resources_to_operations_file, "r") as stream:
resources_to_operations_yaml = yaml.load(stream)
self.operations.append(operation)
self.resources_to_operations_mapping[resource] = operation
- records = self.db.get_list("roles_operations")
+ records = self.db.get_list(self.roles_to_operations_table)
# Loading permissions to MongoDB if there is not any permission.
if not records:
"modified": now,
}
- if self.config["authentication"]["backend"] != "internal" and \
- role_with_operations["name"] != "anonymous":
-
- backend_roles = self.backend.get_role_list(filter_q={"name": role_with_operations["name"]})
-
- if backend_roles:
- backend_id = backend_roles[0]["_id"]
- else:
- backend_id = self.backend.create_role(role_with_operations["name"])
- role_with_operations["_id"] = backend_id
+ if self.config["authentication"]["backend"] == "keystone":
+ if role_with_operations["name"] != "anonymous":
+ backend_roles = self.backend.get_role_list(filter_q={"name": role_with_operations["name"]})
+ if backend_roles:
+ backend_id = backend_roles[0]["_id"]
+ else:
+ backend_id = self.backend.create_role(role_with_operations["name"])
+ role_with_operations["_id"] = backend_id
+ else:
+ role_with_operations["_id"] = str(uuid4())
- self.db.create("roles_operations", role_with_operations)
+ self.db.create(self.roles_to_operations_table, role_with_operations)
if self.config["authentication"]["backend"] != "internal":
self.backend.assign_role_to_user("admin", "admin", "system_admin")
"""
permissions = {oper: [] for oper in self.operations}
- records = self.db.get_list("roles_operations")
+ records = self.db.get_list(self.roles_to_operations_table)
ignore_fields = ["_id", "_admin", "name", "default"]
for record in records:
outdata = self.new_token(None, {"username": user, "password": passwd})
token = outdata["id"]
cherrypy.session['Authorization'] = token
- if self.config["authentication"]["backend"] == "internal":
- return self._internal_authorize(token)
- else:
- if not token:
- raise AuthException("Needed a token or Authorization http header",
- http_code=HTTPStatus.UNAUTHORIZED)
- token_info = self.backend.validate_token(token)
- # TODO add to token info remote host, port
-
- self.check_permissions(token_info, cherrypy.request.path_info,
- cherrypy.request.method)
- return token_info
+
+ if not token:
+ raise AuthException("Needed a token or Authorization http header",
+ http_code=HTTPStatus.UNAUTHORIZED)
+ token_info = self.backend.validate_token(token)
+ # TODO add to token info remote host, port
+
+ self.check_permissions(token_info, cherrypy.request.path_info,
+ cherrypy.request.method)
+ return token_info
+
except AuthException as e:
if not isinstance(e, AuthExceptionUnauthorized):
if cherrypy.session.get('Authorization'):
raise
def new_token(self, session, indata, remote):
- if self.config["authentication"]["backend"] == "internal":
- return self._internal_new_token(session, indata, remote)
- else:
- current_token = None
- if session:
- current_token = session.get("token")
- token_info = self.backend.authenticate(
- user=indata.get("username"),
- password=indata.get("password"),
- token=current_token,
- project=indata.get("project_id")
- )
-
- # if indata.get("username"):
- # token, projects = self.backend.authenticate_with_user_password(
- # indata.get("username"), indata.get("password"))
- # elif session:
- # token, projects = self.backend.authenticate_with_token(
- # session.get("id"), indata.get("project_id"))
- # else:
- # raise AuthException("Provide credentials: username/password or Authorization Bearer token",
- # http_code=HTTPStatus.UNAUTHORIZED)
- #
- # if indata.get("project_id"):
- # project_id = indata.get("project_id")
- # if project_id not in projects:
- # raise AuthException("Project {} not allowed for this user".format(project_id),
- # http_code=HTTPStatus.UNAUTHORIZED)
- # else:
- # project_id = projects[0]
- #
- # if not session:
- # token, projects = self.backend.authenticate_with_token(token, project_id)
- #
- # if project_id == "admin":
- # session_admin = True
- # else:
- # session_admin = reduce(lambda x, y: x or (True if y == "admin" else False),
- # projects, False)
-
- now = time()
- new_session = {
- "_id": token_info["_id"],
- "id": token_info["_id"],
- "issued_at": now,
- "expires": token_info.get("expires", now + 3600),
- "project_id": token_info["project_id"],
- "username": token_info.get("username") or session.get("username"),
- "remote_port": remote.port,
- "admin": True if token_info.get("project_name") == "admin" else False # TODO put admin in RBAC
- }
-
- if remote.name:
- new_session["remote_host"] = remote.name
- elif remote.ip:
- new_session["remote_host"] = remote.ip
+ current_token = None
+ if session:
+ # current_token = session.get("token")
+ current_token = session.get("_id") if self.config["authentication"]["backend"] == "keystone" \
+ else session
+ token_info = self.backend.authenticate(
+ user=indata.get("username"),
+ password=indata.get("password"),
+ token=current_token,
+ project=indata.get("project_id")
+ )
- # TODO: check if this can be avoided. Backend may provide enough information
- self.tokens_cache[token_info["_id"]] = new_session
+ now = time()
+ new_session = {
+ "_id": token_info["_id"],
+ "id": token_info["_id"],
+ "issued_at": now,
+ "expires": token_info.get("expires", now + 3600),
+ "project_id": token_info["project_id"],
+ "username": token_info.get("username") or session.get("username"),
+ "remote_port": remote.port,
+ "admin": True if token_info.get("project_name") == "admin" else False # TODO put admin in RBAC
+ }
+
+ if remote.name:
+ new_session["remote_host"] = remote.name
+ elif remote.ip:
+ new_session["remote_host"] = remote.ip
- return deepcopy(new_session)
+ # TODO: check if this can be avoided. Backend may provide enough information
+ self.tokens_cache[token_info["_id"]] = new_session
+
+ return deepcopy(new_session)
def get_token_list(self, session):
if self.config["authentication"]["backend"] == "internal":
return token_value
def del_token(self, token):
- if self.config["authentication"]["backend"] == "internal":
- return self._internal_del_token(token)
- else:
- try:
- self.backend.revoke_token(token)
- del self.tokens_cache[token]
- return "token '{}' deleted".format(token)
- except KeyError:
- raise AuthException("Token '{}' not found".format(token), http_code=HTTPStatus.NOT_FOUND)
+ try:
+ self.backend.revoke_token(token)
+ self.tokens_cache.pop(token, None)
+ return "token '{}' deleted".format(token)
+ except KeyError:
+ raise AuthException("Token '{}' not found".format(token), http_code=HTTPStatus.NOT_FOUND)
def check_permissions(self, session, url, method):
self.logger.info("Session: {}".format(session))
return filtered_key, parameters
- def _internal_authorize(self, token_id):
- try:
- if not token_id:
- raise AuthException("Needed a token or Authorization http header", http_code=HTTPStatus.UNAUTHORIZED)
- # try to get from cache first
- now = time()
- session = self.tokens_cache.get(token_id)
- if session and session["expires"] < now:
- # delete token. MUST be done with care, as another thread maybe already delete it. Do not use del
- self.tokens_cache.pop(token_id, None)
- session = None
- if session:
- return session
-
- # get from database if not in cache
- session = self.db.get_one("tokens", {"_id": token_id})
- if session["expires"] < now:
- raise AuthException("Expired Token or Authorization http header", http_code=HTTPStatus.UNAUTHORIZED)
- self.tokens_cache[token_id] = session
- return session
- except DbException as e:
- if e.http_code == HTTPStatus.NOT_FOUND:
- raise AuthException("Invalid Token or Authorization http header", http_code=HTTPStatus.UNAUTHORIZED)
- else:
- raise
-
- except AuthException:
- if self.config["global"].get("test.user_not_authorized"):
- return {"id": "fake-token-id-for-test",
- "project_id": self.config["global"].get("test.project_not_authorized", "admin"),
- "username": self.config["global"]["test.user_not_authorized"], "admin": True}
- else:
- raise
-
- def _internal_new_token(self, session, indata, remote):
- now = time()
- user_content = None
-
- # Try using username/password
- if indata.get("username"):
- user_rows = self.db.get_list("users", {"username": indata.get("username")})
- if user_rows:
- user_content = user_rows[0]
- salt = user_content["_admin"]["salt"]
- shadow_password = sha256(indata.get("password", "").encode('utf-8') + salt.encode('utf-8')).hexdigest()
- if shadow_password != user_content["password"]:
- user_content = None
- if not user_content:
- raise AuthException("Invalid username/password", http_code=HTTPStatus.UNAUTHORIZED)
- elif session:
- user_rows = self.db.get_list("users", {"username": session["username"]})
- if user_rows:
- user_content = user_rows[0]
- else:
- raise AuthException("Invalid token", http_code=HTTPStatus.UNAUTHORIZED)
- else:
- raise AuthException("Provide credentials: username/password or Authorization Bearer token",
- http_code=HTTPStatus.UNAUTHORIZED)
-
- token_id = ''.join(random_choice('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789')
- for _ in range(0, 32))
- project_id = indata.get("project_id")
- if project_id:
- if project_id != "admin":
- # To allow project names in project_id
- proj = self.db.get_one("projects", {BaseTopic.id_field("projects", project_id): project_id})
- if proj["_id"] not in user_content["projects"] and proj["name"] not in user_content["projects"]:
- raise AuthException("project {} not allowed for this user"
- .format(project_id), http_code=HTTPStatus.UNAUTHORIZED)
- else:
- project_id = user_content["projects"][0]
- if project_id == "admin":
- session_admin = True
- else:
- # To allow project names in project_id
- project = self.db.get_one("projects", {BaseTopic.id_field("projects", project_id): project_id})
- session_admin = project.get("admin", False)
- new_session = {"issued_at": now, "expires": now + 3600,
- "_id": token_id, "id": token_id, "project_id": project_id, "username": user_content["username"],
- "remote_port": remote.port, "admin": session_admin}
- if remote.name:
- new_session["remote_host"] = remote.name
- elif remote.ip:
- new_session["remote_host"] = remote.ip
-
- self.tokens_cache[token_id] = new_session
- self.db.create("tokens", new_session)
- # check if database must be prune
- self._internal_tokens_prune(now)
- return deepcopy(new_session)
-
def _internal_get_token_list(self, session):
now = time()
token_list = self.db.get_list("tokens", {"username": session["username"], "expires.gt": now})
raise AuthException("needed admin privileges", http_code=HTTPStatus.UNAUTHORIZED)
return token_value
- def _internal_del_token(self, token_id):
- try:
- self.tokens_cache.pop(token_id, None)
- self.db.del_one("tokens", {"_id": token_id})
- return "token '{}' deleted".format(token_id)
- except DbException as e:
- if e.http_code == HTTPStatus.NOT_FOUND:
- raise AuthException("Token '{}' not found".format(token_id), http_code=HTTPStatus.NOT_FOUND)
- else:
- raise
-
def _internal_tokens_prune(self, now=None):
now = now or time()
if not self.next_db_prune_time or self.next_db_prune_time >= now:
projects / osm / NBI.git / blobdiff