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#!/usr/bin/env python
from Cookie import SimpleCookie
import logging
import re
from urlparse import parse_qs
from saml2 import BINDING_HTTP_REDIRECT, time_util
from saml2.httputil import Response
from saml2.httputil import Unauthorized
from saml2.httputil import NotFound
from saml2.httputil import Redirect
#from saml2.httputil import ServiceError
logger = logging.getLogger("saml2.SP")
# -----------------------------------------------------------------------------
def dict_to_table(ava, lev=0, width=1):
txt = ['<table border=%s bordercolor="black">\n' % width]
for prop, valarr in ava.items():
txt.append("<tr>\n")
if isinstance(valarr, basestring):
txt.append("<th>%s</th>\n" % str(prop))
try:
txt.append("<td>%s</td>\n" % valarr.encode("utf8"))
except AttributeError:
txt.append("<td>%s</td>\n" % valarr)
elif isinstance(valarr, list):
i = 0
n = len(valarr)
for val in valarr:
if not i:
txt.append("<th rowspan=%d>%s</td>\n" % (len(valarr), prop))
else:
txt.append("<tr>\n")
if isinstance(val, dict):
txt.append("<td>\n")
txt.extend(dict_to_table(val, lev + 1, width - 1))
txt.append("</td>\n")
else:
try:
txt.append("<td>%s</td>\n" % val.encode("utf8"))
except AttributeError:
txt.append("<td>%s</td>\n" % val)
if n > 1:
txt.append("</tr>\n")
n -= 1
i += 1
elif isinstance(valarr, dict):
txt.append("<th>%s</th>\n" % prop)
txt.append("<td>\n")
txt.extend(dict_to_table(valarr, lev + 1, width - 1))
txt.append("</td>\n")
txt.append("</tr>\n")
txt.append('</table>\n')
return txt
def _expiration(timeout, tformat=None):
if timeout == "now":
return time_util.instant(tformat)
else:
# validity time should match lifetime of assertions
return time_util.in_a_while(minutes=timeout, format=tformat)
def delete_cookie(environ, name):
kaka = environ.get("HTTP_COOKIE", '')
if kaka:
cookie_obj = SimpleCookie(kaka)
morsel = cookie_obj.get(name, None)
cookie = SimpleCookie()
cookie[name] = morsel
cookie[name]["expires"] = _expiration("now",
"%a, %d-%b-%Y %H:%M:%S CET")
return tuple(cookie.output().split(": ", 1))
return None
# ----------------------------------------------------------------------------
#noinspection PyUnusedLocal
def whoami(environ, start_response, user):
nameid = environ["repoze.who.identity"]["login"]
ava = environ["repoze.who.identity"]["user"]
if not nameid:
return not_authn(environ, start_response)
if ava:
response = ["<h2>Your identity are supposed to be</h2>"]
response.extend(dict_to_table(ava))
else:
response = [
"<h2>The system did not return any information about you</h2>"]
response.extend("<a href='logout'>Logout</a>")
resp = Response(response)
return resp(environ, start_response)
#noinspection PyUnusedLocal
def not_found(environ, start_response):
"""Called if no URL matches."""
resp = NotFound('Not Found')
return resp(environ, start_response)
#noinspection PyUnusedLocal
def not_authn(environ, start_response):
resp = Unauthorized('Unknown user')
return resp(environ, start_response)
#noinspection PyUnusedLocal
def slo(environ, start_response, user):
# so here I might get either a LogoutResponse or a LogoutRequest
client = environ['repoze.who.plugins']["saml2auth"]
sc = client.saml_client
if "QUERY_STRING" in environ:
query = parse_qs(environ["QUERY_STRING"])
logger.info("query: %s" % query)
try:
response = sc.parse_logout_request_response(
query["SAMLResponse"][0], binding=BINDING_HTTP_REDIRECT)
if response:
logger.info("LOGOUT response parsed OK")
except KeyError:
# return error reply
response = None
if response is None:
request = sc.lo
headers = []
delco = delete_cookie(environ, "pysaml2")
if delco:
headers.append(delco)
resp = Redirect("/done", headers=headers)
return resp(environ, start_response)
#noinspection PyUnusedLocal
def logout(environ, start_response, user):
# This is where it starts when a user wants to log out
client = environ['repoze.who.plugins']["saml2auth"]
subject_id = environ["repoze.who.identity"]['repoze.who.userid']
logger.info("[logout] subject_id: '%s'" % (subject_id,))
target = "/done"
# What if more than one
_dict = client.saml_client.global_logout(subject_id)
logger.info("[logout] global_logout > %s" % (_dict,))
rem = environ['repoze.who.plugins'][client.rememberer_name]
rem.forget(environ, subject_id)
for key, item in _dict.items():
if isinstance(item, tuple):
binding, htargs = item
else: # result from logout, should be OK
pass
resp = Redirect("Successful Logout", headers=[("Location", target)])
return resp(environ, start_response)
# else:
# resp = ServiceError("Failed to logout from identity services")
# start_response("500 Internal Server Error")
# return []
#noinspection PyUnusedLocal
def done(environ, start_response, user):
# remove cookie and stored info
logger.info("[done] environ: %s" % environ)
subject_id = environ["repoze.who.identity"]['repoze.who.userid']
client = environ['repoze.who.plugins']["saml2auth"]
logger.info("[logout done] remaining subjects: %s" % (
client.saml_client.users.subjects(),))
start_response('200 OK', [('Content-Type', 'text/html')])
return ["<h3>You are now logged out from this service</h3>"]
# ----------------------------------------------------------------------------
# map urls to functions
urls = [
(r'whoami$', whoami),
(r'logout$', logout),
(r'done$', done),
(r'slo$', slo),
(r'^$', whoami),
]
# ----------------------------------------------------------------------------
def application(environ, start_response):
"""
The main WSGI application. Dispatch the current request to
the functions from above and store the regular expression
captures in the WSGI environment as `myapp.url_args` so that
the functions from above can access the url placeholders.
If nothing matches call the `not_found` function.
:param environ: The HTTP application environment
:param start_response: The application to run when the handling of the
request is done
:return: The response as a list of lines
"""
path = environ.get('PATH_INFO', '').lstrip('/')
logger.info("<application> PATH: %s" % path)
user = environ.get("REMOTE_USER", "")
if not user:
user = environ.get("repoze.who.identity", "")
logger.info("repoze.who.identity: '%s'" % user)
else:
logger.info("REMOTE_USER: '%s'" % user)
#logger.info(logging.Logger.manager.loggerDict)
for regex, callback in urls:
if user:
match = re.search(regex, path)
if match is not None:
try:
environ['myapp.url_args'] = match.groups()[0]
except IndexError:
environ['myapp.url_args'] = path
return callback(environ, start_response, user)
else:
return not_authn(environ, start_response)
return not_found(environ, start_response)
# ----------------------------------------------------------------------------
from repoze.who.config import make_middleware_with_config
app_with_auth = make_middleware_with_config(application, {"here": "."},
'./who.ini',
log_file="repoze_who.log")
# ----------------------------------------------------------------------------
PORT = 8087
if __name__ == '__main__':
from wsgiref.simple_server import make_server
srv = make_server('', PORT, app_with_auth)
print "SP listening on port: %s" % PORT
srv.serve_forever()
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