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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
"""
Contains classes and functions that a SAML2.0 Service Provider (SP) may use
to do attribute aggregation.
"""
import logging
#from saml2 import client
from saml2 import BINDING_SOAP
logger = logging.getLogger(__name__)
DEFAULT_BINDING = BINDING_SOAP
class AttributeResolver(object):
def __init__(self, saml2client, metadata=None, config=None):
self.metadata = metadata
self.saml2client = saml2client
self.metadata = saml2client.config.metadata
def extend(self, name_id, issuer, vo_members):
"""
:param name_id: The identifier by which the subject is know
among all the participents of the VO
:param issuer: Who am I the poses the query
:param vo_members: The entity IDs of the IdP who I'm going to ask
for extra attributes
:return: A dictionary with all the collected information about the
subject
"""
result = []
for member in vo_members:
for ass in self.metadata.attribute_consuming_service(member):
for attr_serv in ass.attribute_service:
logger.info(
"Send attribute request to %s", attr_serv.location)
if attr_serv.binding != BINDING_SOAP:
continue
# attribute query assumes SOAP binding
session_info = self.saml2client.attribute_query(
name_id, attr_serv.location, issuer_id=issuer,
)
if session_info:
result.append(session_info)
return result
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