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      1 """
      2 The MIT License
      3 
      4 Copyright (c) 2007-2010 Leah Culver, Joe Stump, Mark Paschal, Vic Fryzel
      5 
      6 Permission is hereby granted, free of charge, to any person obtaining a copy
      7 of this software and associated documentation files (the "Software"), to deal
      8 in the Software without restriction, including without limitation the rights
      9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 copies of the Software, and to permit persons to whom the Software is
     11 furnished to do so, subject to the following conditions:
     12 
     13 The above copyright notice and this permission notice shall be included in
     14 all copies or substantial portions of the Software.
     15 
     16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 THE SOFTWARE.
     23 """
     24 
     25 import oauth2
     26 import smtplib
     27 import base64
     28 
     29 
     30 class SMTP(smtplib.SMTP):
     31     """SMTP wrapper for smtplib.SMTP that implements XOAUTH."""
     32 
     33     def authenticate(self, url, consumer, token):
     34         if consumer is not None and not isinstance(consumer, oauth2.Consumer):
     35             raise ValueError("Invalid consumer.")
     36 
     37         if token is not None and not isinstance(token, oauth2.Token):
     38             raise ValueError("Invalid token.")
     39 
     40         self.docmd('AUTH', 'XOAUTH %s' % \
     41             base64.b64encode(oauth2.build_xoauth_string(url, consumer, token)))
     42