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# vim: set filencoding=utf8
"""
Exchange Server Authenticators
@author: Mike Crute (mcrute@gmail.com)
@organization: SoftGroup Interactive, Inc.
@date: April 26, 2009
"""
import urllib
from copy import copy
from httplib import HTTPSConnection
from Cookie import SimpleCookie
class ExchangeAuthenticator(object):
_auth_cookie = None
authenticated = False
username = None
def __init__(self, web_server):
self.web_server = web_server
def authenticate(self, username, password):
"""
Authenticate the user and cache the authentication so we aren't
hammering the auth server. Should hanlde expiration eventually.
"""
self.username = username
if self._auth_cookie:
return self._auth_cookie
self._auth_cookie = self._do_authentication(username, password)
return self._auth_cookie
def _do_authentication(self, username, password):
raise NotImplemented
def patch_headers(self, headers):
raise NotImplemented
class CookieAuthenticator(ExchangeAuthenticator):
AUTH_DLL = "/exchweb/bin/auth/owaauth.dll"
def _do_authentication(self, username, password):
"""
Does a post to the authentication DLL to fetch a cookie for the session
this can then be passed back to the exchange API for servers that don't
support basicc HTTP auth.
"""
params = urllib.urlencode({ "destination": "https://%s/exchange" % (self.web_server),
"flags": "0",
"username": username,
"password": password,
"SubmitCreds": "Log On",
"trusted": "4"
})
conn = HTTPSConnection(self.web_server)
conn.request("POST", self.AUTH_DLL, params)
response = conn.getresponse()
cookie = SimpleCookie(response.getheader("set-cookie"))
cookie = ("sessionid=%s" % cookie["sessionid"].value, "cadata=%s" % cookie["cadata"].value)
self.authenticated = True
return "; ".join(cookie)
def patch_headers(self, headers):
out_headers = copy(headers)
out_headers["Cookie"] = self._auth_cookie
return out_headers
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