Shibboleth WAYF/DS

*.swp

*.orig

*.bak

		    GNU GENERAL PUBLIC LICENSE

		       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

 Everyone is permitted to copy and distribute verbatim copies

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			    Preamble

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  Notwithstanding any other provision of this License, you have

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		     END OF TERMS AND CONDITIONS

	    How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest

possible use to the public, the best way to achieve this is to make it

free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest

to attach them to the start of each source file to most effectively

state the exclusion of warranty; and each file should have at least

the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>

    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify

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    the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.

    This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with this program.  If not, see <http://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short

notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>

    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.

    This is free software, and you are welcome to redistribute it

    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate

parts of the General Public License.  Of course, your program's commands

might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,

if any, to sign a "copyright disclaimer" for the program, if necessary.

For more information on this, and how to apply and follow the GNU GPL, see

<http://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program

into proprietary programs.  If your program is a subroutine library, you

may consider it more useful to permit linking proprietary applications with

the library.  If this is what you want to do, use the GNU Lesser General

Public License instead of this License.  But first, please read

<http://www.gnu.org/philosophy/why-not-lgpl.html>.

This suite requires the following python modules to be present on the system:

   python-lxml: uses lxml.objectify to parse the XML metadata

   pydns: used for reverse DNS lookup to get a hint about a user's preferred IdP

   IPy: used for IP map manipulation

# -*- coding: utf-8 -*-

from lxml.objectify import parse

from django.utils.translation import ugettext as _

from django.utils.translation import ugettext_lazy as _l

from django.utils.translation import get_language

import re

import random

# A catalog of the institution categories. The order in which they appear

# here is the same as they will appear on the web.

institution_categories = (

      ('university', _l("Universities")),

      ('tei',  _l("Technological educational institutes")),

      ('school',  _l("Other academic institutions")),

      ('institute', _l("Research institutes")),

      ('other', _l("Other")),

      ('test', _l("Testing")),

)

xpath_ns = {'ds': 'http://www.w3.org/2000/09/xmldsig#',

            'md': 'urn:oasis:names:tc:SAML:2.0:metadata',

            'mdrpi': 'urn:oasis:names:tc:SAML:metadata:rpi',

            'mdui': 'urn:oasis:names:tc:SAML:metadata:ui',

            'shibmd': 'urn:mace:shibboleth:metadata:1.0',

            'xi': 'http://www.w3.org/2001/XInclude',

            'xsi': 'http://www.w3.org/2001/XMLSchema-instance'}

class ShibbolethMetadata:

    """Basic object holding the shibboleth metadata"""

    def __init__(self,filename):

        """Initialize a ShibbolethMetadata object

        arguments:

            filename -- The location of the XML document containing Shibboleth metadata

        """

        self.mdtree = parse(filename)

        self.metadata = self.mdtree.getroot()

    def getEntities(self, entity_type = None, augmented=False):

        """Returns an EntityList holding all Entities (of requested type) found 

        in the metadata, perhaps augmented in to the corresponding object type

        """

        if entity_type is "idp":

            entityfilter = "IDPSSODescriptor"

        elif entity_type is "sp":

            entityfilter = "SPSSODescriptor"

        # elif entity_type is "aa":

        #     entityfilter = "AttributeAuthorityDescriptor"

        else:

            entityfilter = None

        def filtertype(entity):

            if entityfilter is None:

                return True

            elif hasattr(entity, entityfilter):

                return True

            else:

                return False

        kots = filter(filtertype, self.metadata.xpath("//md:EntityDescriptor",

                                                     namespaces=xpath_ns))

        if augmented:

            return EntityList([ Entity.construct_augmented_entity(kot)

                                for kot in kots])

        else:

            return EntityList([ Entity(kot) for kot in kots])

    def getIdps(self):

        """Returns an IdpList holding all Identity Providers found in the metadata"""

        idps = self.getEntities("idp")

        return IdpList([ IdentityProvider.create_from_entity(kot) for kot in idps ])

    def getSps(self):

        """Returns an IdpList holding all Identity Providers found in the metadata"""

        sps = self.getEntities("sp")

        return SpList([ ServiceProvider.create_from_entity(kot) for kot in sps ])

    def getPath(self, entity):

        if isinstance(entity, Entity) and hasattr(entity, 'el'):

            return self.mdtree.getpath(entity.el)

        else:

            raise Exception('Can not get path for entity %s' % str(entity))

class EntityList(list):

    """Class holding a list of SAML Entities"""

    def __init__(self,entity_list):

        """Create a new list of SAML Entities

        arguments:

            entity_list -- a list of SAML Entities

        """

        list.__init__(self,entity_list)

    def __getitem__(self, key):

        # Allow for "entitylist['a_provider_entityid'] lookups

        try:

            return filter(lambda x: x.id == key, self)[0]

        except:

            return None

    def getGroups(self):

        """Returns the list of known groups entities are grouped by (in 

        EntitiesDescriptor elements)

        """

        groups = set()

        for x in self:

            groups.update(x.groups)

        return groups

    def getEntities(self, lang=None, group=None, logosize=tuple()):

        """Returns a list of entities, where each entity is represented by a 

        dict carrying the localized name, url, logo and entity ID attributes

        """

        if not lang:

            lang = get_language()

        if group:

            entities = filter(lambda x: group in x.groups, self)

        else:

            entities = self

        entities = sorted(entities)

        return map(lambda x: {'name': x.getName(lang),

                              'url': x.getURL(lang),

                              'logo': x.getLogo(targetsize=logosize),

                              'id': x.id },

                   entities)

    def getEntitiesByGroup(self, lang=None, exclude=[]):

        """Returns a sequence of tuples of the form:

        (group, [ entity1, entity2, ...])

        where the second element of each tuple is the return value of

        getEntities()

        """

        groups = filter(lambda x: x not in exclude, self.getGroups())

        entities = []

        for group in groups:

            entities.append(self.getEntities(lang=lang, group=group))

        return zip(groups, entities)

class IdpList(EntityList):

    """Class holding a list of SAML Identity Providers"""

    def __init__(self,idplist):

        """Create a new list of Identity Providers

        arguments:

            idplist -- a list of IdentityProvider instances

        """

        super(EntityList, self).__init__(idplist)

    def getCategories(self):

        """Returns the list of known categories of Identity Providers"""

        return sorted(set(map(lambda x: x.getType(), self)))

    def getCategoryIdps(self, category):

        """Returns the list of known identity providers for a given category"""

        return filter(lambda x: x.getType() == category, self)

    def getIdpForScope(self, scope):

        """Returns the identity provider matching a given scope"""

        try:

            return filter(lambda x: x.matchesScope(scope), self)[0]

        except:

            return None

    def getIdpsByCategory(self, lang=None, exclude=None):

        """Returns a sequence of tuples of the form:

        (category, [ idp1, idp2, ...])

        where idpX is a dict { 'name': name, 'id': entityid }

        The list of idps is sorted by name

        """

        if not lang:

            lang = get_language()

        if exclude:

            validcats = filter(lambda x: x[0] not in exclude, institution_categories)

        else:

            validcats = institution_categories

        cats = map(lambda x: x[0], validcats) 

        categories = map(lambda x: { 'id': x[0], 'name': x[1] }, validcats)

        idps = []

        for category in cats:

            catidps = sorted(self.getCategoryIdps(category))

            idps.append(map(lambda x: {

                    'name': x.getName(lang),

                    'url': x.getURL(lang),

                    'id': x.id },

                    catidps))

        return zip(categories, idps)

class SpList(EntityList):

    """Class holding a list of SAML Service Providers"""

    def __init__(self,splist):

        """Create a new list of Service Providers

        arguments:

            splist -- a list of ServiceProvider instances

        """

        super(EntityList, self).__init__(splist)

class Entity:

    """Basic class holding a SAML Entity"""

    def __init__(self,el):

        """Create a new Entity instance

        arguments:

            el -- An lxml.objectify.Element holding an EntityDescriptor for a SAML Entity

        """

        self.el = el

        self.name = {} # Holds the Entity's name in a form { language: string }

        self.url = {}

        self.logo = {}

        self.id = self.el.get('entityID')

        self.groups = set(el.xpath("ancestor::md:EntitiesDescriptor/@Name", namespaces=xpath_ns))

        # Initialize the contact details

        self.contact = { 'givenName': '', 'surName': '', 'company': '', 'email': '', 'telephone': '', 'url': '' }

        # Get the institution's name

        try:

            for name in self.el.Organization.OrganizationDisplayName:

                self.name[name.get('{http://www.w3.org/XML/1998/namespace}lang')] = name.text

        except:

            self.name = {'en': "no name"}

        try:

            for url in self.el.Organization.OrganizationURL:

                self.url[url.get('{http://www.w3.org/XML/1998/namespace}lang')] = url.text

        except:

            pass

        # Fill in the contact details

        try:

            for contact in self.el.ContactPerson:

                if contact.get('contactType') == "support":

                    # We're not sure these details even exists, but since that would

                    # require a set of nested checks, exception catching is more

                    # clean.

                    try:

                        self.contact['email'] = contact.EmailAddress.text

                    except:

                        pass

                    try:

                        self.contact['telephone'] = contact.TelephoneNumber.text

                    except:

                        pass

        except:

            pass

    def __cmp__ (self,other):

        # Alphabetic sorting by name

        return cmp(self.getName(get_language()), other.getName(get_language()))

    def __repr__(self):

        return "Entity: \"" + self.name['en'] + '" (' + self.id + ')'

    @classmethod

    def create_from_entity(cls, entity):

        if issubclass(cls, entity.__class__) and hasattr(entity, 'el'):

            return cls(entity.el)

        else:

            raise Exception('Can not instantiate %s from %s' % (cls,

                                                                str(entity)))

    @staticmethod

    def construct_augmented_entity(el):

        elcls = el.__class__

        # should do isinstance() but we do not import whole lxl.objectify

        if ("%s.%s" % (elcls.__module__, elcls.__name__)) == \

                "lxml.objectify.ObjectifiedElement":

            if hasattr(el, "IDPSSODescriptor"):

                aug_ent_cls = IdentityProvider

            elif hasattr(el, "SPSSODescriptor"):

                aug_ent_cls = ServiceProvider

            # elif hasattr(el, "AttributeAuthorityDescriptor"):

            #     pass

            else:

                aug_ent_cls = None

            if aug_ent_cls is not None:

                return aug_ent_cls(el)

        raise Exception("Can not instantiate augmented Entity from %s" %

                             el)

    def getName(self,lang=None):

        if not lang:

            lang = get_language()

        try:

            return self.name[lang]

        except:

            return self.name['en']

    def getURL(self,lang=None):

        if not lang:

            lang = get_language()

        try:

            return self.url[lang]

        except:

            pass

        try:

            return self.url['en']

        except:

            pass

        return None

    def getLogo(self,targetsize=tuple()):

        if not self.logo:

            return None

        # get (x, y) closest to target (a, b)

        if isinstance(targetsize, tuple) and \

                len(targetsize) is 2 and \

                [isinstance(i, int) for i in targetsize]:

            dimensions = min(self.logo.keys(),

                             key = lambda x: abs(x[0]-targetsize[0]) + \

                                 abs(x[1]-targetsize[1])

                             )

        else:

            dimensions = random.choice(self.logo.keys())

        return { 'width': dimensions[0],

                 'height': dimensions[1],

                 'data': self.logo[dimensions] }

class IdentityProvider(Entity):

    """Class holding a SAML Identity Provider"""

    def __init__(self,idpel):

        """Create a new IdentityProvider instance

        arguments:

            idpel -- An lxml.objectify.Element holding an EntityDescriptor for a shibboleth IdP

        """

        Entity.__init__(self, idpel)

        # Dictionary to hold all ArtifactResolutionService definitions, by Binding

        self.ars = {}

        # Dictionary to hold all SingleLogoutService definitions, by Binding

        self.slo = {}

        # Dictionary to hold all ManageNameIDService definitions, by Binding

        self.mnid = {}

        # Dictionary to hold all SingleSignOnService definitions, by Binding

        self.sso = {}

        # Get all SingleSignOnService definitions (required)

        for entry in self.el.IDPSSODescriptor.SingleSignOnService:

            self.sso[entry.get('Binding')] = entry.get('Location')

        try:

            # Get all SingleLogoutService definitions

            for entry in self.el.IDPSSODescriptor.SingleLogoutService:

                self.slo[entry.get('Binding')] = entry.get('Location')

            # Get all ArtifactResolutionService definitions

            for entry in self.el.IDPSSODescriptor.ArtifactResolutionService:

                self.ars[entry.get('Binding')] = entry.get('Location')

            # Get all ManageNameIDService definitions

            for entry in self.el.IDPSSODescriptor.ManageNameIDService:

                self.mnid[entry.get('Binding')] = entry.get('Location')

        except:

            pass

        # Override self.name, self.url with mdui:DisplayName, mdui:DisplayName

        # also add logo from mdui:Logo

        try:

            ui = self.el.IDPSSODescriptor.\

                Extensions['{urn:oasis:names:tc:SAML:metadata:ui}UIInfo']

            # Override self.name with mdui:DisplayName or self.atcs.name

            if hasattr(ui, 'DisplayName'):

                self.name = {}

                for name in ui.DisplayName:

                    self.name[name.get(

                            '{http://www.w3.org/XML/1998/namespace}lang'

                            )] = name.text

            # Override self.url with mdui:InformationURL

            if hasattr(ui,'InformationURL'):

                self.url = {}

                for url in ui.InformationURL:

                    self.url[url.get(

                            '{http://www.w3.org/XML/1998/namespace}lang'

                            )] = url.text

            # Also add logo from mdui:Logo

            if hasattr(ui, 'Logo'):

                for logo in ui.Logo:

                    self.logo[(int(logo.get('width')),

                               int(logo.get('height')))] = logo.text

        except:

            pass

    def __repr__(self):

        return "IDP: \"" + self.name['en'] + '" (' + self.id + ')'

    def getType(self):

        """Returns the type (category) of the current IdP"""

        # Some heuristics to determine the IdP type, based on the

        # institution's name in english.

        if self.name['en'].lower().find('test') >= 0:

            return "test"

        elif self.name['en'].lower().find('university') >= 0:

            return "university"

        elif self.name['en'].lower().find('school of fine arts') >= 0:

            return "university"

        elif self.name['en'].lower().find('technological') >= 0:

            return "tei"

        elif re.findall(r'(ecclesiastical|school|academy)', self.name['en'].lower()):

            return "school"

        elif re.findall(r'(institute|cent(er|re)|ncsr|foundat|bservat)', self.name['en'].lower()):

            return "institute"

        else:

            return "other"

    def getScope(self):

        """Returns the scope of the current IdP"""

        scopes = filter(lambda x: x.tag == "{urn:mace:shibboleth:metadata:1.0}Scope", self.el.IDPSSODescriptor.Extensions.getchildren())

        return scopes[0].text

    def matchesScope(self,scope):

        """Checks wheter the current IdPs scope matches the given string"""

        myscope = self.getScope()

        # Append a trailing '$', to align the regexp with the string end

        if myscope[-1] != '$':

            myscope += '$'

        if re.search(myscope, scope):

            return True

        return False

class ServiceProvider(Entity):

    """Class holding a SAML Service Provider"""

    def __init__(self,spel):

        """Create a new ServiceProvider instance

        arguments:

            spel -- An lxml.objectify.Element holding an EntityDescriptor for a shibboleth SP

        """

        Entity.__init__(self, spel)

        # Dictionary to hold all AssertionConsumerService definitions, by Binding

        self.acs = {}

        # Dictionary to hold all SingleLogoutService definitions, by Binding

        self.slo = {}

        # Dictionary to hold all ManageNameIDService definitions, by Binding

        self.mnid = {}

        # Dictionary to hold all AttributeConsumingService definitions, by ServiceName

        self.atcs = {}

        # Get all AssertionConsumerService definitions (required)

        for entry in self.el.SPSSODescriptor.AssertionConsumerService:

            self.acs[entry.get('Binding')] = entry.get('Location')

        # Get all SingleLogoutService definitions

        try:

            for entry in self.el.SPSSODescriptor.SingleLogoutService:

                self.slo[entry.get('Binding')] = entry.get('Location')

        except:

            pass

        # Get all ManageNameIDService definitions

        try:

            for entry in self.el.SPSSODescriptor.ManageNameIDService:

                self.mnid[entry.get('Binding')] = entry.get('Location')

        except:

            pass

        # Get all AttributeConsumingService definitions

        try:

            for entry in self.el.SPSSODescriptor.AttributeConsumingService:

                atcs_name = {}

                if hasattr(entry, 'ServiceName'):

                    for name in entry.ServiceName:

                        atcs_name[name.get(

                                '{http://www.w3.org/XML/1998/namespace}lang'

                                )] = name.text

                atcs_descr = {}

                if hasattr(entry, 'ServiceDescription'):

                    for descr in entry.ServiceDescription:

                        atcs_descr[descr.get(

                                '{http://www.w3.org/XML/1998/namespace}lang'

                                )] = descr.text

                req_attr = {}

                if hasattr(entry, 'RequestedAttribute'):

                    for attr in entry.RequestedAttribute:

                        req_attr[(attr.get('Name'),

                                  attr.get('NameFormat'))] = {

                            'name': attr.get('FriendlyName'),

                            'required':

                                True if \

                                attr.get('isRequired').lower == 'true' \

                                else False

                            }

                if 'en' in atcs_name:

                    self.atcs[atcs_name['en']] = type(

                        self.__class__.__name__ + \

                            '.AttributeConsumingService',

                        (object,),

                        { 'name': atcs_name,

                          'descr': atcs_descr,

                          'attr': req_attr }

                        )

        except AttributeError:

            pass

        # Override self.name with self.atcs.name

        if self.atcs:

            self.name = [s.name for s in self.atcs.values()][0]

        try:

            ui = self.el.SPSSODescriptor.\

                Extensions['{urn:oasis:names:tc:SAML:metadata:ui}UIInfo']

            # Override self.name with mdui:DisplayName

            if hasattr(ui, 'DisplayName'):

                self.name = {}

                for name in ui.DisplayName:

                    self.name[name.get(

                            '{http://www.w3.org/XML/1998/namespace}lang'

                            )] = name.text

            # Override self.url with mdui:InformationURL

            if hasattr(ui,'InformationURL'):

                self.url = {}

                for url in ui.InformationURL:

                    self.url[url.get(

                            '{http://www.w3.org/XML/1998/namespace}lang'

                            )] = url.text

            # Also add logo from mdui:Logo

            if hasattr(ui, 'Logo'):

                for logo in ui.Logo:

                    self.logo[(int(logo.get('width')),

                               int(logo.get('height')))] = logo.text

        except AttributeError:

            pass

    def __repr__(self):

        return "SP: \"" + self.name['en'] + '" (' + self.id + ')'

import re 

import DNS

from IPy import IP

ipspaces = {

     'admin.grnet.gr':	['195.251.29.0/24', '83.212.9.64/26',

                         '2001:648:2320:1::/64', '2001:648:2340:1::/64'],

     'aegean.gr':   	['83.212.68.0/22', '195.251.128.0/18', 

                         '195.251.160.0/20', '195.251.176.0/21',

                         '2001:648:2050::/48'],

     'aua.gr':	        ['143.233.54.0/24', '143.233.182.0/23',

                         '143.233.184.0/22', '143.233.188.0/23', 

                         '143.233.204.0/24'],

     'aueb.gr':	        ['195.251.255.0/24', '2001:648:2020::/48'],

     'auth.gr':	        ['155.207.0.0/16', '2001:648:2800::/48'],

     'cti.gr':	        ['150.140.0.0/17'],

     'duth.gr':	        ['192.108.114.0/24', '193.92.204.0/22', 

                         '193.92.208.0/20', '193.92.224.0/22', 

                         '193.92.236.0/22', '193.92.240.0/21', 

                         '193.92.248.0/22', '195.130.122.0/24',

                         '2001:648:2E80::/48'],

     'edunet.gr':   	['195.134.100.0/26'],

     'ekt.gr':	        ['194.177.214.0/23'],

     'teicrete.gr': 	['193.92.8.0/22', '83.212.45.0/24', 

                         '83.212.46.0/23', '2001:648:2C10::/48'],

     'hua.gr':	        ['83.212.240.0/23', '83.212.242.0/24', 

                         '195.130.90.0/23', '195.251.30.0/23', 

                         '83.212.240.0/23', '83.212.242.0/24', 

                         '195.130.90.0/23', '195.251.30.0/23'],

     'ntua.gr':	        ['147.102.0.0/16', '2001:648:2000::/48', 

                         '2001:648:2001::/48'],

     'teiath.gr':	    ['195.130.96.0/20', '83.212.64.0/22',

                         '2001:648:2E00::/48'],

     'chania.teicrete.gr':	    ['194.177.198.0/24'],

     'teimes.gr':	    ['194.177.216.0/24'],

     'teiser.gr':	    ['195.130.67.0/24'],

     'tuc.gr':	        ['147.27.0.0/16', '194.177.198.0/24', 

                         '147.27.0.0/16', '194.177.198.0/24'],

     'uoc.gr':      	['147.52.0.0/16', '192.103.20.0/24', 

                         '194.177.197.0/24', '2001:648:2C00::/48'],

     'uoa.gr':	        ['84.38.0.0/20', '87.239.232.0/21', 

                         '88.197.0.0/17', '195.130.123.0/24', 

                         '195.134.64.0/18'],

     'uoi.gr':	        ['83.212.192.0/21', '83.212.200.0/23', 

                         '195.130.112.0/21', '195.130.120.0/23', 

                         '195.251.192.0/21', '195.251.200.0/23'],

     'uop.gr':	        ['195.251.38.0/23', '195.251.46.0/23', 

                         '195.251.112.0/23', '195.251.38.0/23', 

                         '195.251.46.0/23', '195.251.112.0/23'],

     'upatras.gr':	    ['150.140.0.0/16', '195.251.54.128/25'],

     'uth.gr':	        ['83.212.32.0/22', '83.212.34.0/23', 

                         '83.212.43.0/24', '194.177.200.0/21', 

                         '195.251.17.0/24', '195.251.18.0/23'],

}

def urldecode(string):

    urlenc = re.compile(r'%([0-9a-fA-F]{2})')

    return urlenc.sub(lambda x: chr(int(x.group(1), 16)), string)

def getUserRealm(ipaddr):

    ip = IP(ipaddr)

    # First try the address ranges:

    for scope, ranges in ipspaces.items():

        if filter(lambda x: ip.overlaps(x), ranges):

            return scope

    # Then try DNS

    revip = ip.reverseName().rstrip('.') # Important, DnsRequest breaks

                                         # with a trailing dot

    DNS.ParseResolvConf()

    req = DNS.DnsRequest(name=revip, qtype='PTR', timeout=2)

    try:

        res = req.req()

    except DNS.DNSError:

        return

    if res.answers:

        return res.answers[0]['data']

import time

from os import environ

from aai.models import *

from aai.util import *

from grnet_aai.idpmap import *

from django.shortcuts import render_to_response

from django.conf import settings

from django.http import HttpResponse, HttpResponseRedirect, HttpResponseNotFound

from django.utils.http import urlencode

from django.template.loader import render_to_string

def index(request):

    return render_to_response("index.html")

def idp_list(request):

    metadata = ShibbolethMetadata(settings.SHIB_METADATA)

    idps = metadata.getIdps()

    idplist = idps.getIdpsByCategory(exclude=('wayf', 'test'))

    return render_to_response("idp_list.html", { 'idplist' : idplist } )

def sp_list(request):

    metadata = ShibbolethMetadata(settings.SHIB_METADATA)

    sps = metadata.getSps()

    splist = sps.getEntitiesByGroup()

    # splist_other = entities in the top group

    splist_other = [i[1] for i in splist if i[0] == 'http://www.grnet.gr/aai'][0]

    # fitlerids = entity.id for entities not in the top group

    filterids = [o['id'] for i in splist for o in i[1] if i[0] != 'http://www.grnet.gr/aai']

    # filter out entities not in the top group from splist_other

    splist_other_new = filter(lambda x: x['id'] not in filterids, splist_other)

    # replace top group with filtered out version in splist

    splist.insert(splist.index(('http://www.grnet.gr/aai', splist_other)), ('other', splist_other_new))

    splist.remove(('http://www.grnet.gr/aai', splist_other))

    return render_to_response("sp_list.html", { 'splist' : splist } )

def entity_list(request, group = None):

    if group is not None:

        group = "http://aai.grnet.gr%s" % request.path_info

    metadata = ShibbolethMetadata(settings.SHIB_METADATA)

    entities = metadata.getEntities(augmented=True)

    entlist = entities.getEntities(group=group, logosize=(100,100))

    return render_to_response("entity_list.html", { 'entlist' : entlist,

                                                    'group' : group } )

def static(request, path):

    # A catch-all view, trying to render all our static pages or give a 404 

    try:

        return render_to_response(path + ".html")

    except:

        return HttpResponseNotFound(render_to_string("404.html"))

def json(request, path):

    try:

        with open(settings.IDPDISCO_FEEDS + "/" + path, 'r') as feedfile:

            data = feedfile.read()

        if "callback" in request.REQUEST:

            # a jsonp response!

            data = "%s(%s);" % ( request.REQUEST["callback"], data )

            return HttpResponse(data, "text/javascript")

        else:

            return HttpResponse(data, "application/json")

    except:

        return HttpResponseNotFound(render_to_string("404.html"))

def support(request, mode="support"):

    # This gets triggered when a user's attributes fail to be accepted 

    # by a service provider. The aim is to produce a help page, indicating

    # the user's home institution contact details.

    opts = {}

    userIdp = None

    # Check to see whether _redirect_user_idp is set. This cookie will include

    # The user's selected IdP

    if settings.IDP_COOKIE in request.COOKIES.keys():

        userIdp = urldecode(request.COOKIES[settings.IDP_COOKIE])

    elif settings.LAST_IDP_COOKIE in request.COOKIES.keys():

        userIdp = urldecode(request.COOKIES[settings.LAST_IDP_COOKIE])

    if userIdp:

        # Check to see if this is one of the old WAYF entries and map it to a

        # new entityID instead.

        if userIdp in idpmap.keys():

            userIdp = idpmap[userIdp]

        # Get the corresponding IdentityProvider instance

        idp = ShibbolethMetadata(settings.SHIB_METADATA).getIdps()[userIdp]

        if idp:

            opts['idp'] = idp

            opts['idpname'] = idp.getName()

    if mode == "help":

        response = render_to_response("help.html", opts)

    else: