1 # Copyright (c) 2012 netzguerilla.net <iro@netzguerilla.net>

     2 # 

     3 # This file is part of Iro.

     4 # 

     5 # Permission is hereby granted, free of charge, to any person obtaining a copy of

     6 # this software and associated documentation files (the "Software"), to deal in

     7 # the Software without restriction, including without limitation the rights to use,

     8 # copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the

     9 # #Software, and to permit persons to whom the Software is furnished to do so,

    10 # subject to the following conditions:

    11 # 

    12 # The above copyright notice and this permission notice shall be included in

    13 # all copies or substantial portions of the Software.

    14 # 

    15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

    16 # INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

    17 # PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

    18 # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

    19 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

    20 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    21 

    22 from twisted.internet import defer

    23 try:

    24     from inspect import getcallargs

    25 except ImportError:

    26     from ..inspect_getcallargs import getcallargs

    27 

    28 from decorator import decorator

    29 

    30 from .schema import User

    31 from .dbdefer import dbdefer

    32 

    33 from ..validate import validate, vHash

    34 from ..error import UserNotFound, InterfaceException

    35 

    36 

    37 @validate(kwd="apikey", func=vHash, minlength=15, maxlength=15)

    38 @dbdefer

    39 def getuser(session, apikey):

    40     """Returns a valid user object.

    41 

    42     :param session: a valid session object (is created by decorator :func:`iro.model.dbdefer.dbdefer`)

    43     :param string apikey: a vaild apikey (only [0-9a-f] is allowed)

    44     :return: a :class:`iro.model.schema.User` object

    45     :raises: :exc:`iro.error.UserNotFound`

    46     """

    47     user = session.query(User).filter_by(apikey=apikey).first()

    48     if user is None:

    49         raise UserNotFound()

    50     else:

    51         return user

    52 

    53 @decorator

    54 def vUser(f,*args,**kargs):

    55     """A Decorator to verify the apikey and execute the function with a valid :class:`iro.model.schema.User` instead of the apikey.

    56     

    57     The decorator expect the apikey in the **user** parameter.

    58 

    59     :return: a defer

    60     """ 

    61     kp=getcallargs(f,*args,**kargs)

    62     try:

    63         apikey = kp["user"]

    64     except KeyError:

    65         raise InterfaceException() 

    66     

    67     def _gotResult(_user):

    68         kp["user"]=_user

    69         e =  defer.maybeDeferred(f,**kp)

    70         return e

    71     d = defer.maybeDeferred(getuser, apikey=apikey)

    72     return d.addCallback(_gotResult)

    73 

    74