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django-cas-server
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Some improvments

This commit is contained in:
Valentin Samir 2015-05-18 20:30:00 +02:00
parent 937fdbb261
commit 0bc4e89970
12 changed files with 334 additions and 27 deletions
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16
cas_server/admin.py
View File

@ -19,8 +19,22 @@ class ProxyGrantingInline(admin.TabularInline):
class UserAdmin(admin.ModelAdmin):
inlines = (ServiceTicketInline, ProxyTicketInline, ProxyGrantingInline)
class UsernamesInline(admin.TabularInline):
model = Usernames
extra = 0
class ReplaceAttributNameInline(admin.TabularInline):
model = ReplaceAttributName
extra = 0
class ReplaceAttributValueInline(admin.TabularInline):
model = ReplaceAttributValue
extra = 0
class FilterAttributValueInline(admin.TabularInline):
model = FilterAttributValue
extra = 0
class ServicePatternAdmin(admin.ModelAdmin):
list_display = ('pos', 'pattern', 'proxy')
inlines = (UsernamesInline, ReplaceAttributNameInline, ReplaceAttributValueInline, FilterAttributValueInline)
list_display = ('pos', 'name', 'pattern', 'proxy')
admin.site.register(User, UserAdmin)

30
cas_server/migrations/0003_auto_20150518_1648.py Normal file
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@ -0,0 +1,30 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0002_auto_20150517_1406'),
]
operations = [
migrations.CreateModel(
name='Attribut',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('name', models.CharField(max_length=255)),
('replace', models.CharField(default=b'', max_length=255, blank=True)),
('service_pattern', models.ForeignKey(related_name='attributs', to='cas_server.ServicePattern')),
],
options={
},
bases=(models.Model,),
),
migrations.RemoveField(
model_name='servicepattern',
name='attributs',
),
]

47
cas_server/migrations/0004_auto_20150518_1659.py Normal file
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@ -0,0 +1,47 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0003_auto_20150518_1648'),
]
operations = [
migrations.CreateModel(
name='FilterAttributValue',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('attribut', models.CharField(max_length=255)),
('pattern', models.CharField(max_length=255)),
('service_pattern', models.ForeignKey(related_name='filters', to='cas_server.ServicePattern')),
],
options={
},
bases=(models.Model,),
),
migrations.CreateModel(
name='ReplaceAttributValue',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('attribut', models.CharField(max_length=255)),
('pattern', models.CharField(max_length=255)),
('replace', models.CharField(max_length=255)),
('service_pattern', models.ForeignKey(related_name='replacements', to='cas_server.ServicePattern')),
],
options={
},
bases=(models.Model,),
),
migrations.RenameModel(
old_name='Attribut',
new_name='ReplaceAttributName',
),
migrations.RemoveField(
model_name='servicepattern',
name='filter',
),
]

56
cas_server/migrations/0005_auto_20150518_1717.py Normal file
View File

@ -0,0 +1,56 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0004_auto_20150518_1659'),
]
operations = [
migrations.AlterField(
model_name='filterattributvalue',
name='attribut',
field=models.CharField(help_text="Nom de l'attribut devant v\xe9rifier pattern", max_length=255),
preserve_default=True,
),
migrations.AlterField(
model_name='filterattributvalue',
name='pattern',
field=models.CharField(help_text='Une expression r\xe9guli\xe8re', max_length=255),
preserve_default=True,
),
migrations.AlterField(
model_name='replaceattributname',
name='name',
field=models.CharField(help_text="nom d'un attributs \xe0 transmettre au service", max_length=255),
preserve_default=True,
),
migrations.AlterField(
model_name='replaceattributname',
name='replace',
field=models.CharField(help_text="nom sous lequel l'attribut sera pr\xe9sent\xe9 au service. vide = inchang\xe9", max_length=255, blank=True),
preserve_default=True,
),
migrations.AlterField(
model_name='replaceattributvalue',
name='attribut',
field=models.CharField(help_text="Nom de l'attribut dont la valeur doit \xeatre modifi\xe9", max_length=255),
preserve_default=True,
),
migrations.AlterField(
model_name='replaceattributvalue',
name='pattern',
field=models.CharField(help_text='Une expression r\xe9guli\xe8re de ce qui doit \xeatre modifi\xe9', max_length=255),
preserve_default=True,
),
migrations.AlterField(
model_name='replaceattributvalue',
name='replace',
field=models.CharField(help_text='Par quoi le remplacer, les groupes sont captur\xe9 par \\1, \\2 \u2026', max_length=255, blank=True),
preserve_default=True,
),
]

20
cas_server/migrations/0006_auto_20150518_1720.py Normal file
View File

@ -0,0 +1,20 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0005_auto_20150518_1717'),
]
operations = [
migrations.AlterField(
model_name='replaceattributname',
name='name',
field=models.CharField(help_text="nom d'un attributs \xe0 transmettre au service", unique=True, max_length=255),
preserve_default=True,
),
]

35
cas_server/migrations/0007_auto_20150518_1727.py Normal file
View File

@ -0,0 +1,35 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0006_auto_20150518_1720'),
]
operations = [
migrations.CreateModel(
name='Usernames',
fields=[
('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
('value', models.CharField(max_length=255)),
('service_pattern', models.ForeignKey(related_name='usernames', to='cas_server.ServicePattern')),
],
options={
},
bases=(models.Model,),
),
migrations.RemoveField(
model_name='servicepattern',
name='usernames',
),
migrations.AddField(
model_name='servicepattern',
name='restrict_users',
field=models.BooleanField(default=False, help_text=b'Limiter les utilisateur autoris\xc3\xa9 a se connect\xc3\xa9 a ce service \xc3\xa0 celle ci-dessous'),
preserve_default=True,
),
]

20
cas_server/migrations/0008_servicepattern_name.py Normal file
View File

@ -0,0 +1,20 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0007_auto_20150518_1727'),
]
operations = [
migrations.AddField(
model_name='servicepattern',
name='name',
field=models.CharField(max_length=255, unique=True, null=True, blank=True),
preserve_default=True,
),
]

20
cas_server/migrations/0009_auto_20150518_1740.py Normal file
View File

@ -0,0 +1,20 @@
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models, migrations
class Migration(migrations.Migration):
dependencies = [
('cas_server', '0008_servicepattern_name'),
]
operations = [
migrations.AlterField(
model_name='servicepattern',
name='name',
field=models.CharField(help_text=b'Un nom pour le service', max_length=255, unique=True, null=True, blank=True),
preserve_default=True,
),
]

91
cas_server/models.py
View File

@ -11,7 +11,9 @@ import os
import time
import random
import string
import requests
from concurrent.futures import ThreadPoolExecutor
from requests_futures.sessions import FuturesSession
import utils
def _gen_ticket(prefix):
@ -36,23 +38,42 @@ class User(models.Model):
return self.username
def logout(self, request):
async_list = []
session = FuturesSession(executor=ThreadPoolExecutor(max_workers=10))
for ticket in ServiceTicket.objects.filter(user=self):
ticket.logout(request)
async_list.append(ticket.logout(request, session))
ticket.delete()
for ticket in ProxyTicket.objects.filter(user=self):
ticket.logout(request)
async_list.append(ticket.logout(request, session))
ticket.delete()
for ticket in ProxyGrantingTicket.objects.filter(user=self):
ticket.logout(request)
async_list.append(ticket.logout(request, session))
ticket.delete()
for future in async_list:
try:
future.result()
except Exception as e:
messages.add_message(request, messages.WARNING, u'Erreur lors de la déconnexion des services %s' % e)
def delete(self):
super(User, self).delete()
def get_service_url(self, service, service_pattern, renew):
attributs = [s.strip() for s in service_pattern.attributs.split(',')]
ticket = ServiceTicket.objects.create(user=self, attributs = dict([(k, v) for (k, v) in self.attributs.items() if k in attributs]), service=service, renew=renew, service_pattern=service_pattern)
def get_ticket(self, TicketClass, service, service_pattern, renew):
attributs = dict((a.name, a.replace if a.replace else a.name) for a in service_pattern.attributs.all())
replacements = dict((a.name, (a.pattern, a.replace)) for a in service_pattern.replacements.all())
service_attributs = {}
for (k,v) in self.attributs.items():
if k in attributs:
if k in replacements:
v = re.sub(replacements[k][0], replacements[k][1], v)
service_attributs[attributs[k]] = v
ticket = TicketClass.objects.create(user=self, attributs = service_attributs, service=service, renew=renew, service_pattern=service_pattern)
ticket.save()
return ticket
def get_service_url(self, service, service_pattern, renew):
ticket = self.get_ticket(ServiceTicket, service, service_pattern, renew)
url = utils.update_url(service, {'ticket':ticket.value})
return url
@ -67,21 +88,31 @@ class ServicePattern(models.Model):
ordering = ("pos", )
pos = models.IntegerField(default=100)
name = models.CharField(max_length=255, unique=True, blank=True, null=True, help_text="Un nom pour le service")
pattern = models.CharField(max_length=255, unique=True)
user_field = models.CharField(max_length=255, default="", blank=True, help_text="Nom de l'attribut transmit comme username, vide = login")
usernames = models.CharField(max_length=255, default="", blank=True, help_text="Liste d'utilisateurs acceptés séparé par des virgules, vide = tous les utilisateur")
attributs = models.CharField(max_length=255, default="", blank=True, help_text="Liste des nom d'attributs à transmettre au service, séparé par une virgule. vide = aucun")
#usernames = models.CharField(max_length=255, default="", blank=True, help_text="Liste d'utilisateurs acceptés séparé par des virgules, vide = tous les utilisateur")
#attributs = models.CharField(max_length=255, default="", blank=True, help_text="Liste des nom d'attributs à transmettre au service, séparé par une virgule. vide = aucun")
restrict_users = models.BooleanField(default=False, help_text="Limiter les utilisateur autorisé a se connecté a ce service à celle ci-dessous")
proxy = models.BooleanField(default=False, help_text="Un ProxyGrantingTicket peut être délivré au service pour s'authentifier en temps que l'utilisateur sur d'autres services")
filter = models.CharField(max_length=255, default="", blank=True, help_text="Une lambda fonction pour filtrer sur les utilisateur où leurs attribut, arg1: username, arg2:attrs_dict. vide = pas de filtre")
#filter = models.CharField(max_length=255, default="", blank=True, help_text="Une lambda fonction pour filtrer sur les utilisateur où leurs attribut, arg1: username, arg2:attrs_dict. vide = pas de filtre")
def __unicode__(self):
return u"%s: %s" % (self.pos, self.pattern)
def check_user(self, user):
if self.usernames and not user.username in self.usernames.split(','):
if self.restrict_users and not self.usernames.filter(value=user.username):
raise BadUsername()
if self.filter and self.filter.startswith("lambda") and not eval(str(self.filter))(user.username, user.attributs):
raise BadFilter()
for f in self.filters.all():
if isinstance(user.attributs[f.attribut], list):
l = user.attributs[f.attribut]
else:
l = [user.attributs[f.attribut]]
for v in l:
if re.match(f.pattern, str(v)):
break
else:
raise BadFilter('%s do not match %s %s' % (f.pattern, f.attribut, user.attributs[f.attribut]) )
if self.user_field and not user.attributs.get(self.user_field):
raise UserFieldNotDefined()
return True
@ -94,6 +125,36 @@ class ServicePattern(models.Model):
return s
raise cls.DoesNotExist()
class Usernames(models.Model):
value = models.CharField(max_length=255)
service_pattern = models.ForeignKey(ServicePattern, related_name="usernames")
class ReplaceAttributName(models.Model):
name = models.CharField(max_length=255, unique=True, help_text=u"nom d'un attributs à transmettre au service")
replace = models.CharField(max_length=255, blank=True, help_text=u"nom sous lequel l'attribut sera présenté au service. vide = inchangé")
service_pattern = models.ForeignKey(ServicePattern, related_name="attributs")
def __unicode__(self):
if not self.replace:
return self.name
else:
return u"%s → %s" % (self.name, self.replace)
class FilterAttributValue(models.Model):
attribut = models.CharField(max_length=255, help_text=u"Nom de l'attribut devant vérifier pattern")
pattern = models.CharField(max_length=255, help_text=u"Une expression régulière")
service_pattern = models.ForeignKey(ServicePattern, related_name="filters")
def __unicode__(self):
return u"%s %s" % (self.attribut, self.pattern)
class ReplaceAttributValue(models.Model):
attribut = models.CharField(max_length=255, help_text=u"Nom de l'attribut dont la valeur doit être modifié")
pattern = models.CharField(max_length=255, help_text=u"Une expression régulière de ce qui doit être modifié")
replace = models.CharField(max_length=255, blank=True, help_text=u"Par quoi le remplacer, les groupes sont capturé par \\1, \\2 …")
service_pattern = models.ForeignKey(ServicePattern, related_name="replacements")
def __unicode__(self):
return u"%s %s %s" % (self.attribut, self.pattern, self.replace)
class Ticket(models.Model):
@ -110,7 +171,7 @@ class Ticket(models.Model):
def __unicode__(self):
return u"%s: %s %s" % (self.user, self.value, self.service)
def logout(self, request):
def logout(self, request, session):
#if self.validate:
xml = """<samlp:LogoutRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
ID="%(id)s" Version="2.0" IssueInstant="%(datetime)s">
@ -119,7 +180,7 @@ class Ticket(models.Model):
</samlp:LogoutRequest>""" % {'id' : os.urandom(20).encode("hex"), 'datetime' : int(time.time()), 'ticket': self.value}
headers = {'Content-Type': 'text/xml'}
try:
requests.post(self.service.encode('utf-8'), data=xml.encode('utf-8'), headers=headers)
return session.post(self.service.encode('utf-8'), data=xml.encode('utf-8'), headers=headers)
except Exception as e:
messages.add_message(request, messages.WARNING, u'Erreur lors de la déconnexion du service %s:\n%s' % (self.service, e))

2
cas_server/templates/cas_server/logged.html
View File

@ -11,7 +11,7 @@
<div class="col-md-6">
{% bootstrap_messages %}
<div class="alert alert-success" role="alert">Logged</div>
{% bootstrap_button 'Arrêter' size='lg' button_class="btn-danger btn-block" href="logout" %}
{% bootstrap_button 'Deconnexion' size='lg' button_class="btn-danger btn-block" href="logout" %}
</div>
<div class="col-md-3"></div>
</div>

2
cas_server/templates/cas_server/warn.html
View File

@ -10,7 +10,7 @@
<div class="col-md-3"></div>
<div class="col-md-6">
{% bootstrap_messages %}
<div class="alert alert-warning" role="alert">Une demande d'authentification a été émise pour le service {{service}}</div>
<div class="alert alert-warning" role="alert">Une demande d'authentification a été émise pour le service {% if name %}{{name}} ({% endif %}{{service}}{% if name %}){% endif %}</div>
{% bootstrap_button 'Se connecter au service' size='lg' button_class="btn-primary btn-block" href=service_ticket_url %}
</div>
<div class="col-md-3"></div>

22
cas_server/views.py
View File

@ -69,7 +69,7 @@ def login(request):
service_pattern.check_user(user)
# if the user has asked to be warned before any login to a service (no transparent SSO)
if request.session["warn"] and not warned:
return render(request, settings.CAS_WARN_TEMPLATE, {'service_ticket_url':user.get_service_url(service, service_pattern, renew=renew),'service':service})
return render(request, settings.CAS_WARN_TEMPLATE, {'service_ticket_url':user.get_service_url(service, service_pattern, renew=renew),'service':service, 'name': service_pattern.name})
else:
return redirect(user.get_service_url(service, service_pattern, renew=renew)) # redirect, using method ?
except models.ServicePattern.DoesNotExist:
@ -89,13 +89,17 @@ def login(request):
return render(request, settings.CAS_LOGGED_TEMPLATE, {})
else:
if service:
if gateway:
list(messages.get_messages(request)) # clean messages before leaving the django app
return redirect(service)
if request.session.get("authenticated") and renew:
messages.add_message(request, messages.WARNING, u"Demande de réautentification par le service %s." % service)
else:
messages.add_message(request, messages.WARNING, u"Demande d'autentification par le service %s." % service)
try:
service_pattern = models.ServicePattern.validate(service)
if gateway:
list(messages.get_messages(request)) # clean messages before leaving the django app
return redirect(service)
if request.session.get("authenticated") and renew:
messages.add_message(request, messages.WARNING, u"Demande de réautentification par le service %s (%s)." % (service_pattern.name, service))
else:
messages.add_message(request, messages.WARNING, u"Demande d'autentification par le service %s (%s)." % (service_pattern.name, service))
except models.ServicePattern.DoesNotExist:
messages.add_message(request, messages.ERROR, u'Service %s non autorisé.' % service)
return render(request, settings.CAS_LOGIN_TEMPLATE, {'form':form})
def logout(request):
@ -198,7 +202,7 @@ def proxy(request):
pattern = models.ServicePattern.validate(targetService)
ticket = models.ProxyGrantingTicket.objects.get(value=pgt, creation__gt=(datetime.now() - timedelta(seconds=settings.CAS_TICKET_VALIDITY)))
pattern.check_user(ticket.user)
pticket = models.ProxyTicket.objects.create(user=ticket.user, service=targetService, service_pattern=ticket.service_pattern)
pticket = ticket.user.get_ticket(models.ProxyTicket, targetService, pattern, False)
pticket.proxies.create(url=ticket.service)
return render(request, "cas_server/proxy.xml", {'ticket':pticket.value}, content_type="text/xml; charset=utf-8")
except (models.ProxyGrantingTicket.DoesNotExist, models.ServicePattern.DoesNotExist, models.BadUsername, models.BadFilter):