utils: use iri_to_uri/uri_to_iri to manipulate URLs in make_url (fixes #28935)

This patch add non-ASCII characters to URLs in OIDC and CAS tests to
check make_url() works correctly.

src/authentic2/utils.py

@@ -35,7 +35,7 @@ from django.utils.formats import localize
 from django.contrib import messages
 from django.utils.functional import empty
 from django.utils.http import urlsafe_base64_encode
-from django.utils.encoding import force_bytes
+from django.utils.encoding import iri_to_uri, force_bytes, uri_to_iri
 from django.shortcuts import render
 
 
@@ -269,8 +269,9 @@ def make_url(to, args=(), kwargs={}, keep_params=False, params=None, append=None
         url = resolve_url(to, *args, **kwargs)
     else:
         url = to
+    url = iri_to_uri(url)
     scheme, netloc, path, query_string, o_fragment = urlparse.urlsplit(url)
-    url = urlparse.urlunsplit((scheme, netloc, path, '', ''))
+    url = uri_to_iri(urlparse.urlunsplit((scheme, netloc, path, '', '')))
     fragment = fragment or o_fragment
     # Django < 1.6 compat, query_string is not optional
     url_params = QueryDict(query_string=query_string, mutable=True)
@@ -295,16 +296,16 @@ def make_url(to, args=(), kwargs={}, keep_params=False, params=None, append=None
             else:
                 url_params.appendlist(key, value)
     if url_params:
-        url += '?%s' % url_params.urlencode(safe='/')
+        url += u'?%s' % url_params.urlencode(safe='/')
     if fragment:
-        url += '#%s' % fragment
+        url += u'#%s' % fragment
     if absolute:
         if request:
             url = request.build_absolute_uri(url)
         else:
             raise TypeError('make_url() absolute cannot be used without request')
-    # URL must be ASCII, always
-    return url.encode('ascii')
+    # keep using unicode
+    return url
 
 
 # improvement over django.shortcuts.redirect

tests/test_cas.py

@@ -28,7 +28,7 @@ class CasTests(Authentic2TestCase):
     LAST_NAME = 'Doe'
     NAME = 'CAS service'
     SLUG = 'cas-service'
-    URL = 'https://casclient.com/'
+    URL = 'https://casclient.com/%C3%A9/'
     NAME2 = 'CAS service2'
     SLUG2 = 'cas-service2'
     URL2 = 'https://casclient2.com/ https://other.com/'

tests/test_idp_oidc.py

@@ -117,7 +117,7 @@ def oidc_client(request, superuser, app, simple_user, media):
     response.form.set('slug', 'oidcclient')
     response.form.set('ou', get_default_ou().pk)
     response.form.set('unauthorized_url', 'https://example.com/southpark/')
-    response.form.set('redirect_uris', 'https://example.com/callback')
+    response.form.set('redirect_uris', 'https://example.com/callbac%C3%A9')
     for key, value in request.param.iteritems():
         response.form.set(key, value)
     response = response.form.submit().follow()
@@ -397,7 +397,7 @@ def test_invalid_request(caplog, oidc_settings, oidc_client, simple_user, app):
                       fragment=fragment)
     logrecord = [rec for rec in caplog.records if rec.funcName == 'authorization_error'][0]
     assert logrecord.levelname == 'WARNING'
-    assert logrecord.redirect_uri == 'https://example.com/callback'
+    assert logrecord.redirect_uri == 'https://example.com/callbac%C3%A9'
     assert 'missing parameter \'response_type\'' in logrecord.message
 
     # missing scope

tests/utils.py

@@ -8,6 +8,7 @@ import pytest
 from django.test import TestCase
 from django.core.urlresolvers import reverse
 from django.conf import settings
+from django.utils.encoding import iri_to_uri
 
 from authentic2 import utils
 
@@ -70,7 +71,7 @@ class Authentic2TestCase(TestCase):
            value.
         '''
         splitted1 = urlparse.urlsplit(url1)
-        url2 = utils.make_url(url2, params=kwargs)
+        url2 = iri_to_uri(utils.make_url(url2, params=kwargs))
         splitted2 = urlparse.urlsplit(url2)
         for i, (elt1, elt2) in enumerate(zip(splitted1, splitted2)):
             if i == 3: