#!/usr/bin/env python
import re
import base64
from cgi import parse_qs
from saml2 import server
# -----------------------------------------------------------------------------
def dict_to_table(ava, lev=0, width=1):
txt = []
txt.append('\n' % width)
for prop, valarr in ava.items():
txt.append("\n")
if isinstance(valarr, basestring):
txt.append("| %s | \n" % str(prop))
try:
txt.append("%s | \n" % valarr.encode("utf8"))
except AttributeError:
txt.append("%s | \n" % valarr)
elif isinstance(valarr, list):
index = 0
num = len(valarr)
for val in valarr:
if index == 0:
txt.append("%s\n" % (len(valarr), prop))
else:
txt.append(" |
\n")
if isinstance(val, dict):
txt.append("| \n")
txt.extend(dict_to_table(val, lev+1, width-1))
txt.append(" | \n")
else:
try:
txt.append("%s | \n" % val.encode("utf8"))
except AttributeError:
txt.append("%s | \n" % val)
if num > 1:
txt.append("
\n")
num -= 1
index += 1
elif isinstance(valarr, dict):
txt.append("%s | \n" % prop)
txt.append("\n")
txt.extend(dict_to_table(valarr, lev+1, width-1))
txt.append(" | \n")
txt.append("\n")
txt.append('
\n')
return txt
REPOZE_ID_EQUIVALENT = "uid"
FORM_SPEC = """"""
def sso(environ, start_response, user, logger):
""" Supposted to return a POST """
#edict = dict_to_table(environ)
#logger and logger.info("Environ keys: %s" % environ.keys())
logger.info("--- In SSO ---")
if "QUERY_STRING" in environ:
logger and logger.info("Query string: %s" % environ["QUERY_STRING"])
query = parse_qs(environ["QUERY_STRING"])
elif "s2repoze.qinfo" in environ:
query = environ["s2repoze.qinfo"]
# base 64 encoded request
req_info = IDP.parse_authn_request(query["SAMLRequest"][0])
logger.info("parsed OK")
logger.info("%s" % req_info)
identity = dict(environ["repoze.who.identity"]["user"])
logger.info("Identity: %s" % (identity,))
userid = environ["repoze.who.identity"]['repoze.who.userid']
if REPOZE_ID_EQUIVALENT:
identity[REPOZE_ID_EQUIVALENT] = userid
try:
authn_resp = IDP.authn_response(identity,
req_info["id"],
req_info["consumer_url"],
req_info["sp_entity_id"],
req_info["request"].name_id_policy,
userid)
except Exception, excp:
logger and logger.error("Exception: %s" % (excp,))
raise
logger and logger.info("AuthNResponse: %s" % authn_resp)
response = []
response.append("")
response.append("SAML 2.0 POST")
response.append("")
response.append(FORM_SPEC % (req_info["consumer_url"],
base64.b64encode("".join(authn_resp)),"/"))
response.append("""""")
response.append("")
start_response('200 OK', [('Content-Type', 'text/html')])
return response
def whoami(environ, start_response, user, logger):
start_response('200 OK', [('Content-Type', 'text/html')])
identity = environ["repoze.who.identity"].copy()
for prop in ["login", "password"]:
try:
del identity[prop]
except KeyError:
continue
response = dict_to_table(identity)
return response[:]
def not_found(environ, start_response, logger):
"""Called if no URL matches."""
start_response('404 NOT FOUND', [('Content-Type', 'text/plain')])
return ['Not Found']
def not_authn(environ, start_response, logger):
if "QUERY_STRING" in environ:
query = parse_qs(environ["QUERY_STRING"])
logger and logger.info("query: %s" % query)
start_response('401 Unauthorized', [('Content-Type', 'text/plain')])
return ['Unknown user']
# ----------------------------------------------------------------------------
# map urls to functions
URLS = [
(r'whoami$', whoami),
(r'whoami/(.*)$', whoami),
(r'sso$', sso),
(r'sso/(.*)$', sso),
]
# ----------------------------------------------------------------------------
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
"""
user = environ.get("REMOTE_USER", "")
if not user:
user = environ.get("repoze.who.identity", "")
path = environ.get('PATH_INFO', '').lstrip('/')
logger = environ.get('repoze.who.logger')
logger and logger.info( " PATH: %s" % path)
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
logger and logger.info("callback: %s" % (callback,))
return callback(environ, start_response, user, logger)
else:
logger and logger.info("-- No USER --")
return not_authn(environ, start_response, logger)
return not_found(environ, start_response, logger)
# ----------------------------------------------------------------------------
from repoze.who.config import make_middleware_with_config
APP_WITH_AUTH = make_middleware_with_config(application, {"here":"."},
'./who.ini', log_file="app.log")
# ----------------------------------------------------------------------------
if __name__ == '__main__':
import sys
from wsgiref.simple_server import make_server
import logging
LOG_FILENAME = "./idp.log"
PORT = 8088
logging.basicConfig(filename=LOG_FILENAME, level=logging.DEBUG)
IDP = server.Server(sys.argv[1], log=logging, debug=1)
SRV = make_server('localhost', PORT, APP_WITH_AUTH)
print "IdP listening on port: %s" % PORT
SRV.serve_forever()