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modification des acl pour gérer les vues de l'api

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chapeau 2020-11-29 17:17:42 +01:00 committed by Hugo Levy-Falk
parent 3459994754
commit a96a2f50fa
2 changed files with 86 additions and 20 deletions
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82
re2o/acl.py
View file

@ -35,6 +35,7 @@ from django.contrib import messages
from django.shortcuts import redirect
from django.urls import reverse
from django.utils.translation import ugettext as _
from rest_framework.response import Response
from re2o.utils import get_group_having_permission
@ -43,11 +44,13 @@ def acl_error_message(msg, permissions):
"""Create an error message for msg and permissions."""
if permissions is None:
return msg
groups = ", ".join([g.name for g in get_group_having_permission(*permissions)])
groups = ", ".join(
[g.name for g in get_group_having_permission(*permissions)])
message = msg or _("You don't have the right to edit this option.")
if groups:
return (
message + _("You need to be a member of one of these groups: %s.") % groups
message +
_("You need to be a member of one of these groups: %s.") % groups
)
else:
return message + _("No group has the %s permission(s)!") % " or ".join(
@ -60,7 +63,7 @@ def acl_error_message(msg, permissions):
# This is the function of main interest of this file. Almost all the decorators
# use it, and it is a fairly complicated piece of code. Let me guide you through
# this ! 🌈😸
def acl_base_decorator(method_name, *targets, on_instance=True):
def acl_base_decorator(method_name, *targets, on_instance=True, api=False):
"""Base decorator for acl. It checks if the `request.user` has the
permission by calling model.method_name. If the flag on_instance is True,
tries to get an instance of the model by calling
@ -121,6 +124,9 @@ on_instance=False)
method `get_instance` of the model, with the arguments originally
passed to the view.
api: when set to True, errors will no longer trigger redirection and
messages but will send a 403 with errors in JSON
Returns:
The user is either redirected to their own page with an explanation
message if at least one access is not granted, or to the view. In order
@ -192,7 +198,8 @@ ModelC)
# and store it to pass it to the view.
if on_instance:
try:
target = target.get_instance(target_id, *args, **kwargs)
target = target.get_instance(
target_id, *args, **kwargs)
instances.append(target)
except target.DoesNotExist:
# A non existing instance is a valid reason to deny
@ -238,28 +245,37 @@ ModelC)
# Store the messages at the right place.
for can, msg, permissions in process_target(target, fields, target_id):
if not can:
error_messages.append(acl_error_message(msg, permissions))
error_messages.append(
acl_error_message(msg, permissions))
elif msg:
warning_messages.append(acl_error_message(msg, permissions))
warning_messages.append(
acl_error_message(msg, permissions))
# Display the warning messages
if warning_messages:
for msg in warning_messages:
messages.warning(request, msg)
if not api:
if warning_messages:
for msg in warning_messages:
messages.warning(request, msg)
# If there is any error message, then the request must be denied.
if error_messages:
# We display the message
for msg in error_messages:
messages.error(
request,
msg or _("You don't have the right to access this menu."),
)
if not api:
for msg in error_messages:
messages.error(
request,
msg or _(
"You don't have the right to access this menu."),
)
# And redirect the user to the right place.
if request.user.id is not None:
return redirect(
reverse("users:profil", kwargs={"userid": str(request.user.id)})
)
if not api:
return redirect(
reverse("users:profil", kwargs={
"userid": str(request.user.id)})
)
else:
return Response(data={"errors": error_messages, "warning": warning_messages}, status=403)
else:
return redirect(reverse("index"))
return view(request, *chain(instances, args), **kwargs)
@ -328,7 +344,8 @@ def can_delete_set(model):
request, _("You don't have the right to access this menu.")
)
return redirect(
reverse("users:profil", kwargs={"userid": str(request.user.id)})
reverse("users:profil", kwargs={
"userid": str(request.user.id)})
)
return view(request, instances, *args, **kwargs)
@ -375,9 +392,36 @@ def can_edit_history(view):
"""
if request.user.has_perm("admin.change_logentry"):
return view(request, *args, **kwargs)
messages.error(request, _("You don't have the right to edit the history."))
messages.error(request, _(
"You don't have the right to edit the history."))
return redirect(
reverse("users:profil", kwargs={"userid": str(request.user.id)})
)
return wrapper
def can_view_all_api(*models):
"""Decorator to check if an user can see an api page
Only used on functionnal api views (class-based api views ACL are checked
in api/permissions.py)
"""
return acl_base_decorator("can_view_all", *models, on_instance=False, api=True)
def can_edit_all_api(*models):
"""Decorator to check if an user can edit via the api
We do not always know which instances will be edited, so we may need to know
if the user can edit any instance.
Only used on functionnal api views (class-based api views ACL are checked
in api/permissions.py)
"""
return acl_base_decorator("can_edit_all", *models, on_instance=False, api=True)
def can_create_api(*models):
"""Decorator to check if an user can create the given models. via the api
Only used on functionnal api views (class-based api views ACL are checked
in api/permissions.py)
"""
return acl_base_decorator("can_create", *models, on_instance=False, api=True)

24
re2o/mixins.py
View file

@ -61,7 +61,8 @@ class FormRevMixin(object):
)
elif self.changed_data:
reversion.set_comment(
"Field(s) edited: %s" % ", ".join(field for field in self.changed_data)
"Field(s) edited: %s" % ", ".join(
field for field in self.changed_data)
)
return super(FormRevMixin, self).save(*args, **kwargs)
@ -187,6 +188,27 @@ class AclMixin(object):
(permission,),
)
@classmethod
def can_edit_all(cls, user_request, *_args, **_kwargs):
"""Check if a user can edit all instances of an object
Parameters:
user_request: User calling for this action
Returns:
Boolean: True if user_request has the right access to do it, else
false with reason for reject authorization
"""
permission = cls.get_modulename() + ".change_" + cls.get_classname()
can = user_request.has_perm(permission)
return (
can,
_("You don't have the right to edit every %s object.") % cls.get_classname()
if not can
else None,
(permission,),
)
def can_view(self, user_request, *_args, **_kwargs):
"""Check if a user can view an instance of an object