mirror of https://github.com/zulip/zulip.git
398 lines
16 KiB
Python
398 lines
16 KiB
Python
from collections.abc import Callable
|
|
from typing import Any
|
|
|
|
import django_scim.constants as scim_constants
|
|
import django_scim.exceptions as scim_exceptions
|
|
from django.conf import settings
|
|
from django.core.exceptions import ValidationError
|
|
from django.db import models
|
|
from django.http import HttpRequest
|
|
from django_scim.adapters import SCIMUser
|
|
from scim2_filter_parser.attr_paths import AttrPath
|
|
|
|
from zerver.actions.create_user import do_create_user, do_reactivate_user
|
|
from zerver.actions.user_settings import check_change_full_name, do_change_user_delivery_email
|
|
from zerver.actions.users import do_change_user_role, do_deactivate_user
|
|
from zerver.lib.email_validation import email_allowed_for_realm, validate_email_not_already_in_realm
|
|
from zerver.lib.request import RequestNotes
|
|
from zerver.lib.subdomains import get_subdomain
|
|
from zerver.models import UserProfile
|
|
from zerver.models.realms import (
|
|
DisposableEmailError,
|
|
DomainNotAllowedForRealmError,
|
|
EmailContainsPlusError,
|
|
)
|
|
|
|
|
|
class ZulipSCIMUser(SCIMUser):
|
|
"""With django-scim2, the core of a project's SCIM implementation is
|
|
this user adapter class, which defines how to translate between the
|
|
concepts of users in the SCIM specification and the Zulip users.
|
|
"""
|
|
|
|
id_field = "id"
|
|
|
|
def __init__(self, obj: UserProfile, request: HttpRequest | None = None) -> None:
|
|
# We keep the function signature from the superclass, but this actually
|
|
# shouldn't be called with request being None.
|
|
assert request is not None
|
|
|
|
# self.obj is populated appropriately by django-scim2 views with
|
|
# an instance of UserProfile - either fetched from the database
|
|
# or constructed via UserProfile() if the request currently being
|
|
# handled is a User creation request (POST).
|
|
self.obj: UserProfile
|
|
|
|
super().__init__(obj, request)
|
|
self.subdomain = get_subdomain(request)
|
|
self.config = settings.SCIM_CONFIG[self.subdomain]
|
|
|
|
# These attributes are custom to this class and will be
|
|
# populated with values in handle_replace and similar methods
|
|
# in response to a request for the corresponding
|
|
# UserProfile fields to change. The .save() method inspects
|
|
# these fields an executes the requested changes.
|
|
self._email_new_value: str | None = None
|
|
self._is_active_new_value: bool | None = None
|
|
self._full_name_new_value: str | None = None
|
|
self._role_new_value: int | None = None
|
|
self._password_set_to: str | None = None
|
|
|
|
def is_new_user(self) -> bool:
|
|
return not bool(self.obj.id)
|
|
|
|
@property
|
|
def display_name(self) -> str:
|
|
"""
|
|
Return the displayName of the user per the SCIM spec.
|
|
|
|
Overridden because UserProfile uses the .full_name attribute,
|
|
while the superclass expects .first_name and .last_name.
|
|
"""
|
|
return self.obj.full_name
|
|
|
|
def to_dict(self) -> dict[str, Any]:
|
|
"""
|
|
Return a ``dict`` conforming to the SCIM User Schema,
|
|
ready for conversion to a JSON object.
|
|
|
|
The attribute names appearing in the dict are those defined in the SCIM User Schema:
|
|
https://datatracker.ietf.org/doc/html/rfc7643#section-4.1
|
|
"""
|
|
if self.config["name_formatted_included"]:
|
|
name = {
|
|
"formatted": self.obj.full_name,
|
|
}
|
|
else:
|
|
# Some clients (e.g. Okta) operate with a first_name,
|
|
# last_name model and don't support a full name field.
|
|
# While we strive never to do this in the project because
|
|
# not every culture has the first/last name structure,
|
|
# Okta's design means we have to convert our full_name
|
|
# into a first_name/last_name pair to provide to the
|
|
# client. We do naive conversion with `split`.
|
|
if " " in self.obj.full_name:
|
|
first_name, last_name = self.obj.full_name.split(" ", 1)
|
|
else:
|
|
first_name, last_name = self.obj.full_name, ""
|
|
name = {
|
|
"givenName": first_name,
|
|
"familyName": last_name,
|
|
}
|
|
|
|
return {
|
|
"schemas": [scim_constants.SchemaURI.USER],
|
|
"id": self.obj.id,
|
|
"userName": self.obj.delivery_email,
|
|
"name": name,
|
|
"displayName": self.display_name,
|
|
"active": self.obj.is_active,
|
|
"role": UserProfile.ROLE_ID_TO_API_NAME[self.obj.role],
|
|
# meta is a property implemented in the superclass
|
|
# TODO: The upstream implementation uses `user_profile.date_joined`
|
|
# as the value of the lastModified meta attribute, which is not
|
|
# a correct simplification. We should add proper tracking
|
|
# of this value.
|
|
"meta": self.meta,
|
|
}
|
|
|
|
def from_dict(self, d: dict[str, Any]) -> None:
|
|
"""Consume a dictionary conforming to the SCIM User Schema. The
|
|
dictionary was originally submitted as JSON by the client in
|
|
PUT (update a user) and POST (create a new user) requests. A
|
|
PUT request tells us to update User attributes to match those
|
|
passed in the dict. A POST request tells us to create a new
|
|
User with attributes as specified in the dict.
|
|
|
|
The superclass implements some very basic default behavior,
|
|
that doesn't support changing attributes via our actions.py
|
|
functions (which update audit logs, send events, etc.) or
|
|
doing application-specific validation.
|
|
|
|
Thus, we've completely overridden the upstream implementation
|
|
to store the values of the supported attributes that the
|
|
request would like to change. Actually modifying the database
|
|
is implemented in self.save().
|
|
|
|
Given that SCIMUser is an adapter class, this method is meant
|
|
to be completely overridden, and we can expect it remain the
|
|
case that no important django-scim2 logic relies on the
|
|
superclass's implementation of this function.
|
|
"""
|
|
email = d.get("userName")
|
|
assert isinstance(email, str)
|
|
self.change_delivery_email(email)
|
|
|
|
name_attr_dict = d.get("name", {})
|
|
if self.config["name_formatted_included"]:
|
|
full_name = name_attr_dict.get("formatted", "")
|
|
else:
|
|
# Some providers (e.g. Okta) don't provide name.formatted.
|
|
first_name = name_attr_dict.get("givenName", "")
|
|
last_name = name_attr_dict.get("familyName", "")
|
|
full_name = f"{first_name} {last_name}".strip()
|
|
|
|
if full_name:
|
|
assert isinstance(full_name, str)
|
|
self.change_full_name(full_name)
|
|
|
|
if self.is_new_user() and not full_name:
|
|
raise scim_exceptions.BadRequestError(
|
|
"Must specify name.formatted, name.givenName or name.familyName when creating a new user"
|
|
)
|
|
|
|
active = d.get("active")
|
|
if self.is_new_user() and not active:
|
|
raise scim_exceptions.BadRequestError("New user must have active=True")
|
|
|
|
if active is not None:
|
|
assert isinstance(active, bool)
|
|
self.change_is_active(active)
|
|
|
|
role_name = d.get("role")
|
|
if role_name:
|
|
assert isinstance(role_name, str)
|
|
self.change_role(role_name)
|
|
|
|
def change_delivery_email(self, new_value: str) -> None:
|
|
# Note that the email_allowed_for_realm check that usually
|
|
# appears adjacent to validate_email is present in save().
|
|
self.validate_email(new_value)
|
|
if self.obj.delivery_email != new_value:
|
|
self._email_new_value = new_value
|
|
|
|
def change_full_name(self, new_value: str) -> None:
|
|
if new_value and self.obj.full_name != new_value:
|
|
self._full_name_new_value = new_value
|
|
|
|
def change_is_active(self, new_value: bool) -> None:
|
|
if new_value != self.obj.is_active:
|
|
self._is_active_new_value = new_value
|
|
|
|
def change_role(self, new_role_name: str) -> None:
|
|
try:
|
|
role = UserProfile.ROLE_API_NAME_TO_ID[new_role_name]
|
|
except KeyError:
|
|
raise scim_exceptions.BadRequestError(
|
|
f"Invalid role: {new_role_name}. Valid values are: {list(UserProfile.ROLE_API_NAME_TO_ID.keys())}"
|
|
)
|
|
if role != self.obj.role:
|
|
self._role_new_value = role
|
|
|
|
def handle_replace(
|
|
self,
|
|
path: AttrPath | None,
|
|
value: str | list[object] | dict[AttrPath, object],
|
|
operation: Any,
|
|
) -> None:
|
|
"""
|
|
PATCH requests specify a list of operations of types "add", "remove", "replace".
|
|
So far we only implement "replace" as that should be sufficient.
|
|
|
|
This method is forked from the superclass and is called to handle "replace"
|
|
PATCH operations. Such an operation tells us to change the values
|
|
of a User's attributes as specified. The superclass implements a very basic
|
|
behavior in this method and is meant to be overridden, since this is an adapter class.
|
|
"""
|
|
if not isinstance(value, dict):
|
|
# Restructure for use in loop below. Taken from the
|
|
# overridden upstream method.
|
|
assert path is not None
|
|
value = {path: value}
|
|
|
|
assert isinstance(value, dict)
|
|
for attr_path, val in (value or {}).items():
|
|
if attr_path.first_path == ("userName", None, None):
|
|
assert isinstance(val, str)
|
|
self.change_delivery_email(val)
|
|
elif attr_path.first_path == ("name", "formatted", None):
|
|
# TODO: Add support name_formatted_included=False config like we do
|
|
# for updates via PUT.
|
|
assert isinstance(val, str)
|
|
self.change_full_name(val)
|
|
elif attr_path.first_path == ("active", None, None):
|
|
assert isinstance(val, bool)
|
|
self.change_is_active(val)
|
|
elif attr_path.first_path == ("role", None, None):
|
|
assert isinstance(val, str)
|
|
self.change_role(val)
|
|
else:
|
|
raise scim_exceptions.NotImplementedError("Not Implemented")
|
|
|
|
self.save()
|
|
|
|
def save(self) -> None:
|
|
"""
|
|
This method is called at the end of operations modifying a user,
|
|
and is responsible for actually applying the requested changes,
|
|
writing them to the database.
|
|
"""
|
|
realm = RequestNotes.get_notes(self._request).realm
|
|
assert realm is not None
|
|
|
|
email_new_value = getattr(self, "_email_new_value", None)
|
|
is_active_new_value = getattr(self, "_is_active_new_value", None)
|
|
full_name_new_value = getattr(self, "_full_name_new_value", None)
|
|
role_new_value = getattr(self, "_role_new_value", None)
|
|
password = getattr(self, "_password_set_to", None)
|
|
|
|
# Clean up the internal "pending change" state, now that we've
|
|
# fetched the values:
|
|
self._email_new_value = None
|
|
self._is_active_new_value = None
|
|
self._full_name_new_value = None
|
|
self._password_set_to = None
|
|
self._role_new_value = None
|
|
|
|
if email_new_value:
|
|
try:
|
|
# Note that the validate_email check that usually
|
|
# appears adjacent to email_allowed_for_realm is
|
|
# present in save().
|
|
email_allowed_for_realm(email_new_value, realm)
|
|
except DomainNotAllowedForRealmError:
|
|
raise scim_exceptions.BadRequestError(
|
|
"This email domain isn't allowed in this organization."
|
|
)
|
|
except DisposableEmailError: # nocoverage
|
|
raise scim_exceptions.BadRequestError(
|
|
"Disposable email domains are not allowed for this realm."
|
|
)
|
|
except EmailContainsPlusError: # nocoverage
|
|
raise scim_exceptions.BadRequestError("Email address can't contain + characters.")
|
|
|
|
try:
|
|
validate_email_not_already_in_realm(realm, email_new_value)
|
|
except ValidationError as e:
|
|
raise ConflictError("Email address already in use: " + str(e))
|
|
|
|
if self.is_new_user():
|
|
assert full_name_new_value is not None
|
|
add_initial_stream_subscriptions = True
|
|
if (
|
|
self.config.get("create_guests_without_streams", False)
|
|
and role_new_value == UserProfile.ROLE_GUEST
|
|
):
|
|
add_initial_stream_subscriptions = False
|
|
|
|
self.obj = do_create_user(
|
|
email_new_value,
|
|
password,
|
|
realm,
|
|
full_name_new_value,
|
|
role=role_new_value,
|
|
tos_version=UserProfile.TOS_VERSION_BEFORE_FIRST_LOGIN,
|
|
add_initial_stream_subscriptions=add_initial_stream_subscriptions,
|
|
acting_user=None,
|
|
)
|
|
return
|
|
|
|
# TODO: The below operations should ideally be executed in a single
|
|
# atomic block to avoid failing with partial changes getting saved.
|
|
# This can be fixed once we figure out how do_deactivate_user can be run
|
|
# inside an atomic block.
|
|
|
|
# We process full_name first here, since it's the only one that can fail.
|
|
if full_name_new_value:
|
|
check_change_full_name(self.obj, full_name_new_value, acting_user=None)
|
|
|
|
if email_new_value:
|
|
do_change_user_delivery_email(self.obj, email_new_value, acting_user=None)
|
|
|
|
if role_new_value is not None:
|
|
do_change_user_role(self.obj, role_new_value, acting_user=None)
|
|
|
|
if is_active_new_value is not None and is_active_new_value:
|
|
do_reactivate_user(self.obj, acting_user=None)
|
|
elif is_active_new_value is not None and not is_active_new_value:
|
|
do_deactivate_user(self.obj, acting_user=None)
|
|
|
|
def delete(self) -> None:
|
|
"""
|
|
This is consistent with Okta SCIM - users don't get DELETEd, they're deactivated
|
|
by changing their "active" attr to False.
|
|
"""
|
|
raise scim_exceptions.BadRequestError(
|
|
'DELETE operation not supported. Use PUT or PATCH to modify the "active" attribute instead.'
|
|
)
|
|
|
|
|
|
def get_extra_model_filter_kwargs_getter(
|
|
model: type[models.Model],
|
|
) -> Callable[[HttpRequest, Any, Any], dict[str, object]]:
|
|
"""Registered as GET_EXTRA_MODEL_FILTER_KWARGS_GETTER in our
|
|
SCIM configuration.
|
|
|
|
Returns a function which generates additional kwargs
|
|
to add to QuerySet's .filter() when fetching a UserProfile
|
|
corresponding to the requested SCIM User from the database.
|
|
|
|
It's *crucial* for security that we filter by realm_id (based on
|
|
the subdomain of the request) to prevent a SCIM client authorized
|
|
for subdomain X from being able to interact with all of the Users
|
|
on the entire server.
|
|
|
|
This should be extended for Groups when implementing them by
|
|
checking the `model` parameter; because we only support
|
|
UserProfiles, such a check is unnecessary.
|
|
"""
|
|
|
|
def get_extra_filter_kwargs(
|
|
request: HttpRequest, *args: Any, **kwargs: Any
|
|
) -> dict[str, object]:
|
|
realm = RequestNotes.get_notes(request).realm
|
|
assert realm is not None
|
|
return {"realm_id": realm.id, "is_bot": False}
|
|
|
|
return get_extra_filter_kwargs
|
|
|
|
|
|
def base_scim_location_getter(request: HttpRequest, *args: Any, **kwargs: Any) -> str:
|
|
"""Used as the base url for constructing the Location of a SCIM resource.
|
|
|
|
Since SCIM synchronization is scoped to an individual realm, we
|
|
need these locations to be namespaced within the realm's domain
|
|
namespace, which is conveniently accessed via realm.url.
|
|
"""
|
|
|
|
realm = RequestNotes.get_notes(request).realm
|
|
assert realm is not None
|
|
|
|
return realm.url
|
|
|
|
|
|
class ConflictError(scim_exceptions.IntegrityError):
|
|
"""
|
|
Per https://datatracker.ietf.org/doc/html/rfc7644#section-3.3
|
|
|
|
If the service provider determines that the creation of the requested
|
|
resource conflicts with existing resources (e.g., a "User" resource
|
|
with a duplicate "userName"), the service provider MUST return HTTP
|
|
status code 409 (Conflict) with a "scimType" error code of
|
|
"uniqueness"
|
|
|
|
scim_exceptions.IntegrityError class omits to include the scimType.
|
|
"""
|
|
|
|
scim_type = "uniqueness"
|