import yaml
from base64 import standard_b64decode
from copy import deepcopy
-from functools import reduce
+# from functools import reduce
from hashlib import sha256
from http import HTTPStatus
from random import choice as random_choice
from os import path
from base_topic import BaseTopic # To allow project names in project_id
-from authconn import AuthException
+from authconn import AuthException, AuthExceptionUnauthorized
from authconn_keystone import AuthconnKeystone
from osm_common import dbmongo
from osm_common import dbmemory
self.resources_to_operations_mapping = {}
self.operation_to_allowed_roles = {}
self.logger = logging.getLogger("nbi.authenticator")
+ self.operations = []
def start(self, config):
"""
# 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
-
- operations = []
+
with open(self.resources_to_operations_file, "r") as stream:
resources_to_operations_yaml = yaml.load(stream)
for resource, operation in resources_to_operations_yaml["resources_to_operations"].items():
- operation_key = operation.replace(".", ":")
- if operation_key not in operations:
- operations.append(operation_key)
- self.resources_to_operations_mapping[resource] = operation_key
+ if operation not in self.operations:
+ self.operations.append(operation)
+ self.resources_to_operations_mapping[resource] = operation
records = self.db.get_list("roles_operations")
- # Loading permissions to MongoDB. If there are permissions already in MongoDB, do nothing.
- if len(records) == 0:
+ # Loading permissions to MongoDB if there is not any permission.
+ if not records:
with open(self.roles_to_operations_file, "r") as stream:
roles_to_operations_yaml = yaml.load(stream)
- roles = []
- for role_with_operations in roles_to_operations_yaml["roles_to_operations"]:
- # Verifying if role already exists. If it does, send warning to log and ignore it.
- if role_with_operations["role"] not in roles:
- roles.append(role_with_operations["role"])
+ role_names = []
+ for role_with_operations in roles_to_operations_yaml["roles"]:
+ # Verifying if role already exists. If it does, raise exception
+ if role_with_operations["name"] not in role_names:
+ role_names.append(role_with_operations["name"])
else:
- self.logger.warning("Duplicated role with name: {0}. Role definition is ignored."
- .format(role_with_operations["role"]))
- continue
-
- role_ops = {}
- root = None
+ raise AuthException("Duplicated role name '{}' at file '{}''"
+ .format(role_with_operations["name"], self.roles_to_operations_file))
- if not role_with_operations["operations"]:
+ if not role_with_operations["permissions"]:
continue
- for operation, is_allowed in role_with_operations["operations"].items():
+ for permission, is_allowed in role_with_operations["permissions"].items():
if not isinstance(is_allowed, bool):
- continue
+ raise AuthException("Invalid value for permission '{}' at role '{}'; at file '{}'"
+ .format(permission, role_with_operations["name"],
+ self.roles_to_operations_file))
- if operation == ".":
- root = is_allowed
- continue
-
- if len(operation) != 1 and operation[-1] == ".":
- self.logger.warning("Invalid operation {0} terminated in '.'. "
- "Operation will be discarded"
- .format(operation))
- continue
-
- operation_key = operation.replace(".", ":")
- if operation_key not in role_ops.keys():
- role_ops[operation_key] = is_allowed
- else:
- self.logger.info("In role {0}, the operation {1} with the value {2} was discarded due to "
- "repetition.".format(role_with_operations["role"], operation, is_allowed))
+ # TODO chek permission is ok
+ if permission[-1] == ":":
+ raise AuthException("Invalid permission '{}' terminated in ':' for role '{}'; at file {}"
+ .format(permission, role_with_operations["name"],
+ self.roles_to_operations_file))
- if not root:
- root = False
- self.logger.info("Root for role {0} not defined. Default value 'False' applied."
- .format(role_with_operations["role"]))
+ if "default" not in role_with_operations["permissions"]:
+ role_with_operations["permissions"]["default"] = False
+ if "admin" not in role_with_operations["permissions"]:
+ role_with_operations["permissions"]["admin"] = False
now = time()
- operation_to_roles_item = {
- "_admin": {
- "created": now,
- "modified": now,
- },
- "name": role_with_operations["role"],
- "root": root
+ role_with_operations["_admin"] = {
+ "created": now,
+ "modified": now,
}
- for operation, value in role_ops.items():
- operation_to_roles_item[operation] = value
-
if self.config["authentication"]["backend"] != "internal" and \
- role_with_operations["role"] != "anonymous":
- keystone_id = self.backend.create_role(role_with_operations["role"])
- operation_to_roles_item["_id"] = keystone_id["_id"]
+ 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
+
+ self.db.create("roles_operations", role_with_operations)
+
+ if self.config["authentication"]["backend"] != "internal":
+ self.backend.assign_role_to_user("admin", "admin", "system_admin")
+
+ self.load_operation_to_allowed_roles()
- self.db.create("roles_operations", operation_to_roles_item)
+ def load_operation_to_allowed_roles(self):
+ """
+ Fills the internal self.operation_to_allowed_roles based on database role content and self.operations
+ It works in a shadow copy and replace at the end to allow other threads working with the old copy
+ :return: None
+ """
- permissions = {oper: [] for oper in operations}
+ permissions = {oper: [] for oper in self.operations}
records = self.db.get_list("roles_operations")
- ignore_fields = ["_id", "_admin", "name", "root"]
+ ignore_fields = ["_id", "_admin", "name", "default"]
for record in records:
- record_permissions = {oper: record["root"] for oper in operations}
- operations_joined = [(oper, value) for oper, value in record.items() if oper not in ignore_fields]
+ record_permissions = {oper: record["permissions"].get("default", False) for oper in self.operations}
+ operations_joined = [(oper, value) for oper, value in record["permissions"].items()
+ if oper not in ignore_fields]
operations_joined.sort(key=lambda x: x[0].count(":"))
for oper in operations_joined:
for allowed_op in allowed_operations:
permissions[allowed_op].append(record["name"])
- for oper, role_list in permissions.items():
- self.operation_to_allowed_roles[oper] = role_list
-
- if self.config["authentication"]["backend"] != "internal":
- self.backend.assign_role_to_user("admin", "admin", "system_admin")
+ self.operation_to_allowed_roles = permissions
def authorize(self):
token = None
if not token:
raise AuthException("Needed a token or Authorization http header",
http_code=HTTPStatus.UNAUTHORIZED)
- try:
- self.backend.validate_token(token)
- self.check_permissions(self.tokens_cache[token], cherrypy.request.path_info,
- cherrypy.request.method)
- # TODO: check if this can be avoided. Backend may provide enough information
- return deepcopy(self.tokens_cache[token])
- except AuthException:
- self.del_token(token)
- raise
+ 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 cherrypy.session.get('Authorization'):
- del cherrypy.session['Authorization']
- cherrypy.response.headers["WWW-Authenticate"] = 'Bearer realm="{}"'.format(e)
- raise AuthException(str(e))
+ if not isinstance(e, AuthExceptionUnauthorized):
+ if cherrypy.session.get('Authorization'):
+ del cherrypy.session['Authorization']
+ cherrypy.response.headers["WWW-Authenticate"] = 'Bearer realm="{}"'.format(e)
+ raise
def new_token(self, session, indata, remote):
if self.config["authentication"]["backend"] == "internal":
return self._internal_new_token(session, indata, remote)
else:
- 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)
+ current_token = None
+ if session:
+ current_token = session.get("token")
+ token_info = self.backend.authenticate(
+ user=indata.get("username"),
+ password=indata.get("username"),
+ 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,
- "id": token,
+ "_id": token_info["_id"],
+ "id": token_info["_id"],
"issued_at": now,
- "expires": now + 3600,
- "project_id": project_id,
- "username": indata.get("username") if not session else session.get("username"),
+ "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": session_admin
+ "admin": True if token_info.get("project_name") == "admin" else False # TODO put admin in RBAC
}
if remote.name:
new_session["remote_host"] = remote.ip
# TODO: check if this can be avoided. Backend may provide enough information
- self.tokens_cache[token] = new_session
+ self.tokens_cache[token_info["_id"]] = new_session
return deepcopy(new_session)
operation = self.resources_to_operations_mapping[key]
roles_required = self.operation_to_allowed_roles[operation]
- roles_allowed = self.backend.get_user_role_list(session["id"])
+ roles_allowed = [role["name"] for role in session["roles"]]
+
+ # fills session["admin"] if some roles allows it
+ session["admin"] = False
+ for role in roles_allowed:
+ if role in self.operation_to_allowed_roles["admin"]:
+ session["admin"] = True
+ break
if "anonymous" in roles_required:
return
if role in roles_required:
return
- raise AuthException("Access denied: lack of permissions.")
+ raise AuthExceptionUnauthorized("Access denied: lack of permissions.")
def get_user_list(self):
return self.backend.get_user_list()
projects / osm / NBI.git / blobdiff