120 lines
4.5 KiB
Python
120 lines
4.5 KiB
Python
from geruecht.model.accessToken import AccessToken
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import geruecht.controller as gc
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import geruecht.controller.userController as uc
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from geruecht.model import BAR
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from datetime import datetime, timedelta
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import hashlib
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from . import Singleton
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from geruecht.logger import getDebugLogger
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debug = getDebugLogger()
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userController = uc.UserController()
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class AccesTokenController(metaclass=Singleton):
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""" Control all createt AccesToken
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This Class create, delete, find and manage AccesToken.
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Attributes:
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tokenList: List of currents AccessToken
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lifetime: Variable for the Lifetime of one AccessToken in seconds.
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"""
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instance = None
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tokenList = None
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def __init__(self, lifetime=1800):
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""" Initialize AccessTokenController
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Initialize Thread and set tokenList empty.
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"""
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debug.info("init accesstoken controller")
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self.lifetime = gc.accConfig
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self.tokenList = []
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def checkBar(self, user):
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debug.info("check if user {{ {} }} is baruser".format(user))
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if (userController.checkBarUser(user)):
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if BAR not in user.group:
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debug.debug("append bar to user {{ {} }}".format(user))
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user.group.append(BAR)
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else:
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while BAR in user.group:
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debug.debug("delete bar from user {{ {} }}".format(user))
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user.group.remove(BAR)
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debug.debug("user {{ {} }} groups are {{ {} }}".format(user, user.group))
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def validateAccessToken(self, token, group):
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""" Verify Accestoken
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Verify an Accestoken and Group so if the User has permission or not.
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Retrieves the accestoken if valid else retrieves False
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Args:
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token: Token to verify.
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group: Group like 'moneymaster', 'gastro', 'user' or 'bar'
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Returns:
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An the AccesToken for this given Token or False.
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"""
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debug.info("check token {{ {} }} is valid")
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for accToken in self.tokenList:
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debug.debug("accesstoken is {}".format(accToken))
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endTime = accToken.timestamp + timedelta(seconds=accToken.lifetime)
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now = datetime.now()
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debug.debug("now is {{ {} }}, endtime is {{ {} }}".format(now, endTime))
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if now <= endTime:
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debug.debug("check if token {{ {} }} is same as {{ {} }}".format(token, accToken))
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if accToken == token:
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self.checkBar(accToken.user)
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debug.debug("check if accestoken {{ {} }} has group {{ {} }}".format(accToken, group))
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if self.isSameGroup(accToken, group):
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accToken.updateTimestamp()
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debug.debug("found accesstoken {{ {} }} with token: {{ {} }} and group: {{ {} }}".format(accToken, token, group))
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return accToken
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else:
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debug.debug("accesstoken is {{ {} }} out of date".format(accToken))
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self.deleteAccessToken(accToken)
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debug.debug("no valid accesstoken with token: {{ {} }} and group: {{ {} }}".format(token, group))
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return False
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def deleteAccessToken(self, accToken):
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debug.info("delete accesstoken {{ {} }}".format(accToken))
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self.tokenList.remove(accToken)
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def createAccesToken(self, user, ldap_conn):
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""" Create an AccessToken
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Create an AccessToken for an User and add it to the tokenList.
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Args:
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user: For wich User is to create an AccessToken
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Returns:
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A created Token for User
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"""
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debug.info("creat accesstoken")
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now = datetime.ctime(datetime.now())
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token = hashlib.md5((now + user.dn).encode('utf-8')).hexdigest()
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self.checkBar(user)
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accToken = AccessToken(user, token, ldap_conn, self.lifetime, datetime.now())
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debug.debug("accesstoken is {{ {} }}".format(accToken))
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self.tokenList.append(accToken)
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return token
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def isSameGroup(self, accToken, groups):
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""" Verify group in AccessToken
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Verify if the User in the AccesToken has the right group.
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Args:
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accToken: AccessToken to verify.
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groups: Group to verify.
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Returns:
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A Bool. If the same then True else False
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"""
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debug.info("check accesstoken {{ {} }} has group {{ {} }}".format(accToken, groups))
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for group in groups:
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if group in accToken.user.group: return True
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return False
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