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# ============LICENSE_START=======================================================
# Copyright (C) 2020 Huawei Technologies Co., Ltd. All rights reserved.
# ================================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============LICENSE_END=========================================================
"""
Used to get and check Access Token by SO NSSMF adapter.
"""
import json
import uuid
import time
import sched
import threading
from schematics.types import StringType
from schematics.models import Model
from .utils import getLogger, AUTH_DB, TOKEN_EXPIRES_TIME, TOKEN_CLEAN_TIME
logger = getLogger("AuthManager")
lock = threading.Lock()
class AuthRequest(Model):
grantType = StringType(required=True)
userName = StringType(required=True)
value = StringType(required=True)
class AuthInfo(object):
def __init__(self, authRequest, expires):
self.authRequest = authRequest
self.expiredTime = int(time.time()) + expires * 60
class AuthError(ValueError):
pass
class TokenError(ValueError):
pass
_AUTH_TOKEN = {}
def cleanExpiredToken():
s = sched.scheduler(time.time, time.sleep)
def doCleanExpiredToken():
current_time = int(time.time())
expiredTokens = []
for authToken in _AUTH_TOKEN:
if current_time > _AUTH_TOKEN[authToken].expiredTime:
expiredTokens.append(authToken)
logger.debug("Auth token %s is expired and will be deleted" % authToken)
with lock:
for authToken in expiredTokens:
del _AUTH_TOKEN[authToken]
s.enter(TOKEN_CLEAN_TIME, 1, doCleanExpiredToken)
s.enter(TOKEN_CLEAN_TIME, 1, doCleanExpiredToken)
s.run()
def checkAuth(authRequest):
with open(AUTH_DB) as f:
authDB = json.load(f)
if authRequest["grantType"].lower() != "password":
raise AuthError("Unsupported grantType %s" % authRequest["grantType"])
for authItem in authDB:
if authItem["userName"].lower() == authRequest["userName"].lower() \
and authItem["value"] == authRequest["value"]:
break
else:
raise AuthError("userName or password is error")
def generateAuthToken(authRequest):
token = uuid.uuid4().hex
with lock:
_AUTH_TOKEN[token] = AuthInfo(authRequest, TOKEN_EXPIRES_TIME)
return {
"accessToken": token,
"expires": TOKEN_EXPIRES_TIME
}
def checkAuthToken(requestHeaders):
authToken = requestHeaders.get("X-Auth-Token")
logger.debug("X-Auth-Token: %s" % authToken)
if not authToken:
raise TokenError("Auth token is missing")
if authToken not in _AUTH_TOKEN:
raise TokenError("Auth token is error")
current_time = int(time.time())
if current_time > _AUTH_TOKEN[authToken].expiredTime:
raise TokenError("Auth token is expired")
def startAuthManagerJob():
cleanThread = threading.Thread(target=cleanExpiredToken)
cleanThread.daemon = True
cleanThread.start()
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