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realm_settings.py
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realm_settings.py
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import logging
from email.headerregistry import Address
from typing import Any, Dict, Literal, Optional, Tuple, Union
from django.conf import settings
from django.db import transaction
from django.utils.timezone import now as timezone_now
from django.utils.translation import gettext as _
from confirmation.models import Confirmation, create_confirmation_link, generate_key
from zerver.actions.custom_profile_fields import do_remove_realm_custom_profile_fields
from zerver.actions.message_delete import do_delete_messages_by_sender
from zerver.actions.user_groups import update_users_in_full_members_system_group
from zerver.actions.user_settings import do_delete_avatar_image
from zerver.lib.exceptions import JsonableError
from zerver.lib.message import parse_message_time_limit_setting, update_first_visible_message_id
from zerver.lib.retention import move_messages_to_archive
from zerver.lib.send_email import FromAddress, send_email_to_admins
from zerver.lib.sessions import delete_realm_user_sessions
from zerver.lib.timestamp import datetime_to_timestamp, timestamp_to_datetime
from zerver.lib.upload import delete_message_attachments
from zerver.lib.user_counts import realm_user_count_by_role
from zerver.models import (
ArchivedAttachment,
Attachment,
Message,
NamedUserGroup,
Realm,
RealmAuditLog,
RealmAuthenticationMethod,
RealmReactivationStatus,
RealmUserDefault,
Recipient,
ScheduledEmail,
Stream,
Subscription,
UserGroup,
UserProfile,
)
from zerver.models.groups import SystemGroups
from zerver.models.realms import get_realm
from zerver.models.users import active_user_ids
from zerver.tornado.django_api import send_event, send_event_on_commit
if settings.BILLING_ENABLED:
from corporate.lib.stripe import RealmBillingSession
@transaction.atomic(savepoint=False)
def do_set_realm_property(
realm: Realm, name: str, value: Any, *, acting_user: Optional[UserProfile]
) -> None:
"""Takes in a realm object, the name of an attribute to update, the
value to update and and the user who initiated the update.
"""
property_type = Realm.property_types[name]
assert isinstance(
value, property_type
), f"Cannot update {name}: {value} is not an instance of {property_type}"
old_value = getattr(realm, name)
if old_value == value:
return
setattr(realm, name, value)
realm.save(update_fields=[name])
event = dict(
type="realm",
op="update",
property=name,
value=value,
)
# These settings have a different event format due to their history.
message_edit_settings = [
"allow_message_editing",
"edit_topic_policy",
"message_content_edit_limit_seconds",
]
if name in message_edit_settings:
event = dict(
type="realm",
op="update_dict",
property="default",
data={name: value},
)
send_event_on_commit(realm, event, active_user_ids(realm.id))
event_time = timezone_now()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_PROPERTY_CHANGED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_value,
RealmAuditLog.NEW_VALUE: value,
"property": name,
},
)
if name == "waiting_period_threshold":
update_users_in_full_members_system_group(realm, acting_user=acting_user)
def do_set_push_notifications_enabled_end_timestamp(
realm: Realm, value: Optional[int], *, acting_user: Optional[UserProfile]
) -> None:
# Variant of do_set_realm_property with a bit of extra complexity
# for the fact that we store a datetime object in the database but
# use an integer format timestamp in the API.
name = "push_notifications_enabled_end_timestamp"
old_timestamp = None
old_datetime = getattr(realm, name)
if old_datetime is not None:
old_timestamp = datetime_to_timestamp(old_datetime)
if old_timestamp == value:
return
with transaction.atomic():
new_datetime = None
if value is not None:
new_datetime = timestamp_to_datetime(value)
setattr(realm, name, new_datetime)
realm.save(update_fields=[name])
event_time = timezone_now()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_PROPERTY_CHANGED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_timestamp,
RealmAuditLog.NEW_VALUE: value,
"property": name,
},
)
event = dict(
type="realm",
op="update",
property=name,
value=value,
)
send_event(realm, event, active_user_ids(realm.id))
@transaction.atomic(savepoint=False)
def do_change_realm_permission_group_setting(
realm: Realm, setting_name: str, user_group: UserGroup, *, acting_user: Optional[UserProfile]
) -> None:
"""Takes in a realm object, the name of an attribute to update, the
user_group to update and and the user who initiated the update.
"""
assert setting_name in Realm.REALM_PERMISSION_GROUP_SETTINGS
old_user_group_id = getattr(realm, setting_name).id
setattr(realm, setting_name, user_group)
realm.save(update_fields=[setting_name])
event = dict(
type="realm",
op="update_dict",
property="default",
data={setting_name: user_group.id},
)
send_event_on_commit(realm, event, active_user_ids(realm.id))
event_time = timezone_now()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_PROPERTY_CHANGED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_user_group_id,
RealmAuditLog.NEW_VALUE: user_group.id,
"property": setting_name,
},
)
def parse_and_set_setting_value_if_required(
realm: Realm, setting_name: str, value: Union[int, str], *, acting_user: Optional[UserProfile]
) -> Tuple[Optional[int], bool]:
parsed_value = parse_message_time_limit_setting(
value,
Realm.MESSAGE_TIME_LIMIT_SETTING_SPECIAL_VALUES_MAP,
setting_name=setting_name,
)
setting_value_changed = False
if parsed_value is None and getattr(realm, setting_name) is not None:
# We handle "None" here separately, since in the update_realm view
# function, do_set_realm_property is called only if setting value is
# not "None". For values other than "None", the view function itself
# sets the value by calling "do_set_realm_property".
do_set_realm_property(
realm,
setting_name,
parsed_value,
acting_user=acting_user,
)
setting_value_changed = True
return parsed_value, setting_value_changed
def get_realm_authentication_methods_for_page_params_api(
realm: Realm, authentication_methods: Dict[str, bool]
) -> Dict[str, Any]:
# To avoid additional queries, this expects passing in the authentication_methods
# dictionary directly, which is useful when the caller already has to fetch it
# for other purposes - and that's the circumstance in which this function is
# currently used. We can trivially make this argument optional if needed.
from zproject.backends import AUTH_BACKEND_NAME_MAP
result_dict: Dict[str, Dict[str, Union[str, bool]]] = {
backend_name: {"enabled": enabled, "available": True}
for backend_name, enabled in authentication_methods.items()
}
if not settings.BILLING_ENABLED:
return result_dict
# The rest of the function is only for the mechanism of restricting
# certain backends based on the realm's plan type on Zulip Cloud.
from corporate.models import CustomerPlan
for backend_name in result_dict:
available_for = AUTH_BACKEND_NAME_MAP[backend_name].available_for_cloud_plans
if available_for is not None and realm.plan_type not in available_for:
result_dict[backend_name]["available"] = False
required_upgrade_plan_number = min(
set(available_for).intersection({Realm.PLAN_TYPE_STANDARD, Realm.PLAN_TYPE_PLUS})
)
if required_upgrade_plan_number == Realm.PLAN_TYPE_STANDARD:
required_upgrade_plan_name = CustomerPlan.name_from_tier(
CustomerPlan.TIER_CLOUD_STANDARD
)
else:
assert required_upgrade_plan_number == Realm.PLAN_TYPE_PLUS
required_upgrade_plan_name = CustomerPlan.name_from_tier(
CustomerPlan.TIER_CLOUD_PLUS
)
result_dict[backend_name]["unavailable_reason"] = _(
"You need to upgrade to the {required_upgrade_plan_name} plan to use this authentication method."
).format(required_upgrade_plan_name=required_upgrade_plan_name)
else:
result_dict[backend_name]["available"] = True
return result_dict
def validate_authentication_methods_dict_from_api(
realm: Realm, authentication_methods: Dict[str, bool]
) -> None:
current_authentication_methods = realm.authentication_methods_dict()
for name in authentication_methods:
if name not in current_authentication_methods:
raise JsonableError(
_("Invalid authentication method: {name}. Valid methods are: {methods}").format(
name=name, methods=sorted(current_authentication_methods.keys())
)
)
if settings.BILLING_ENABLED:
validate_plan_for_authentication_methods(realm, authentication_methods)
def validate_plan_for_authentication_methods(
realm: Realm, authentication_methods: Dict[str, bool]
) -> None:
from zproject.backends import AUTH_BACKEND_NAME_MAP
old_authentication_methods = realm.authentication_methods_dict()
newly_enabled_authentication_methods = {
name
for name, enabled in authentication_methods.items()
if enabled and not old_authentication_methods.get(name, False)
}
for name in newly_enabled_authentication_methods:
available_for = AUTH_BACKEND_NAME_MAP[name].available_for_cloud_plans
if available_for is not None and realm.plan_type not in available_for:
# This should only be feasible via the API, since app UI should prevent
# trying to enable an unavailable authentication method.
raise JsonableError(
_("Authentication method {name} is not available on your current plan.").format(
name=name
)
)
def do_set_realm_authentication_methods(
realm: Realm, authentication_methods: Dict[str, bool], *, acting_user: Optional[UserProfile]
) -> None:
old_value = realm.authentication_methods_dict()
with transaction.atomic():
for key, value in authentication_methods.items():
# This does queries in a loop, but this isn't a performance sensitive
# path and is only run rarely.
if value:
RealmAuthenticationMethod.objects.get_or_create(realm=realm, name=key)
else:
RealmAuthenticationMethod.objects.filter(realm=realm, name=key).delete()
updated_value = realm.authentication_methods_dict()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_PROPERTY_CHANGED,
event_time=timezone_now(),
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_value,
RealmAuditLog.NEW_VALUE: updated_value,
"property": "authentication_methods",
},
)
event_data = dict(
authentication_methods=get_realm_authentication_methods_for_page_params_api(
realm, updated_value
)
)
event = dict(
type="realm",
op="update_dict",
property="default",
data=event_data,
)
send_event(realm, event, active_user_ids(realm.id))
def do_set_realm_stream(
realm: Realm,
field: Literal[
"new_stream_announcements_stream",
"signup_announcements_stream",
"zulip_update_announcements_stream",
],
stream: Optional[Stream],
stream_id: int,
*,
acting_user: Optional[UserProfile],
) -> None:
# We could calculate more of these variables from `field`, but
# it's probably more readable to not do so.
if field == "new_stream_announcements_stream":
old_value = realm.new_stream_announcements_stream_id
realm.new_stream_announcements_stream = stream
property = "new_stream_announcements_stream_id"
elif field == "signup_announcements_stream":
old_value = realm.signup_announcements_stream_id
realm.signup_announcements_stream = stream
property = "signup_announcements_stream_id"
elif field == "zulip_update_announcements_stream":
old_value = realm.zulip_update_announcements_stream_id
realm.zulip_update_announcements_stream = stream
property = "zulip_update_announcements_stream_id"
else:
raise AssertionError("Invalid realm stream field.")
with transaction.atomic():
realm.save(update_fields=[field])
event_time = timezone_now()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_PROPERTY_CHANGED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_value,
RealmAuditLog.NEW_VALUE: stream_id,
"property": field,
},
)
event = dict(
type="realm",
op="update",
property=property,
value=stream_id,
)
send_event(realm, event, active_user_ids(realm.id))
def do_set_realm_new_stream_announcements_stream(
realm: Realm, stream: Optional[Stream], stream_id: int, *, acting_user: Optional[UserProfile]
) -> None:
do_set_realm_stream(
realm, "new_stream_announcements_stream", stream, stream_id, acting_user=acting_user
)
def do_set_realm_signup_announcements_stream(
realm: Realm, stream: Optional[Stream], stream_id: int, *, acting_user: Optional[UserProfile]
) -> None:
do_set_realm_stream(
realm, "signup_announcements_stream", stream, stream_id, acting_user=acting_user
)
def do_set_realm_zulip_update_announcements_stream(
realm: Realm, stream: Optional[Stream], stream_id: int, *, acting_user: Optional[UserProfile]
) -> None:
do_set_realm_stream(
realm, "zulip_update_announcements_stream", stream, stream_id, acting_user=acting_user
)
def do_set_realm_user_default_setting(
realm_user_default: RealmUserDefault,
name: str,
value: Any,
*,
acting_user: Optional[UserProfile],
) -> None:
old_value = getattr(realm_user_default, name)
realm = realm_user_default.realm
event_time = timezone_now()
with transaction.atomic(savepoint=False):
setattr(realm_user_default, name, value)
realm_user_default.save(update_fields=[name])
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_DEFAULT_USER_SETTINGS_CHANGED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.OLD_VALUE: old_value,
RealmAuditLog.NEW_VALUE: value,
"property": name,
},
)
event = dict(
type="realm_user_settings_defaults",
op="update",
property=name,
value=value,
)
send_event(realm, event, active_user_ids(realm.id))
RealmDeactivationReasonType = Literal[
"owner_request",
"tos_violation",
"inactivity",
"self_hosting_migration",
# When we change the subdomain of a realm, we leave
# behind a deactivated gravestone realm.
"subdomain_change",
]
def do_deactivate_realm(
realm: Realm,
*,
acting_user: Optional[UserProfile],
deactivation_reason: RealmDeactivationReasonType,
) -> None:
"""
Deactivate this realm. Do NOT deactivate the users -- we need to be able to
tell the difference between users that were intentionally deactivated,
e.g. by a realm admin, and users who can't currently use Zulip because their
realm has been deactivated.
"""
if realm.deactivated:
return
with transaction.atomic():
realm.deactivated = True
realm.save(update_fields=["deactivated"])
if settings.BILLING_ENABLED:
billing_session = RealmBillingSession(user=acting_user, realm=realm)
billing_session.downgrade_now_without_creating_additional_invoices()
event_time = timezone_now()
RealmAuditLog.objects.create(
realm=realm,
event_type=RealmAuditLog.REALM_DEACTIVATED,
event_time=event_time,
acting_user=acting_user,
extra_data={
RealmAuditLog.ROLE_COUNT: realm_user_count_by_role(realm),
"deactivation_reason": deactivation_reason,
},
)
from zerver.lib.remote_server import maybe_enqueue_audit_log_upload
maybe_enqueue_audit_log_upload(realm)
ScheduledEmail.objects.filter(realm=realm).delete()
# This event will only ever be received by clients with an active
# longpoll connection, because by this point clients will be
# unable to authenticate again to their event queue (triggering an
# immediate reload into the page explaining the realm was
# deactivated). So the purpose of sending this is to flush all
# active longpoll connections for the realm.
event = dict(type="realm", op="deactivated", realm_id=realm.id)
send_event_on_commit(realm, event, active_user_ids(realm.id))
# Don't deactivate the users, as that would lose a lot of state if
# the realm needs to be reactivated, but do delete their sessions
# so they get bumped to the login screen, where they'll get a
# realm deactivation notice when they try to log in.
#
# Note: This is intentionally outside the transaction because it
# is unsafe to modify sessions inside transactions with the
# cached_db session plugin we're using, and our session engine
# declared in zerver/lib/safe_session_cached_db.py enforces this.
delete_realm_user_sessions(realm)
def do_reactivate_realm(realm: Realm) -> None:
if not realm.deactivated:
logging.warning("Realm %s cannot be reactivated because it is already active.", realm.id)
return
realm.deactivated = False
with transaction.atomic():
realm.save(update_fields=["deactivated"])
event_time = timezone_now()
RealmAuditLog.objects.create(
# We hardcode acting_user=None, since realm reactivation
# uses an email authentication mechanism that will never
# know which user initiated the change.
acting_user=None,
realm=realm,
event_type=RealmAuditLog.REALM_REACTIVATED,
event_time=event_time,
extra_data={
RealmAuditLog.ROLE_COUNT: realm_user_count_by_role(realm),
},
)
from zerver.lib.remote_server import maybe_enqueue_audit_log_upload
maybe_enqueue_audit_log_upload(realm)
def do_add_deactivated_redirect(realm: Realm, redirect_url: str) -> None:
realm.deactivated_redirect = redirect_url
realm.save(update_fields=["deactivated_redirect"])
def do_delete_all_realm_attachments(realm: Realm, *, batch_size: int = 1000) -> None:
# Delete attachment files from the storage backend, so that we
# don't leave them dangling.
for obj_class in Attachment, ArchivedAttachment:
last_id = 0
while True:
to_delete = (
obj_class._default_manager.filter(realm_id=realm.id, pk__gt=last_id)
.order_by("pk")
.values_list("pk", "path_id")[:batch_size]
)
if len(to_delete) > 0:
delete_message_attachments([row[1] for row in to_delete])
last_id = to_delete[len(to_delete) - 1][0]
if len(to_delete) < batch_size:
break
obj_class._default_manager.filter(realm=realm).delete()
def do_scrub_realm(realm: Realm, *, acting_user: Optional[UserProfile]) -> None:
if settings.BILLING_ENABLED:
billing_session = RealmBillingSession(user=acting_user, realm=realm)
billing_session.downgrade_now_without_creating_additional_invoices()
users = UserProfile.objects.filter(realm=realm)
for user in users:
do_delete_messages_by_sender(user)
do_delete_avatar_image(user, acting_user=acting_user)
user.full_name = f"Scrubbed {generate_key()[:15]}"
scrubbed_email = Address(
username=f"scrubbed-{generate_key()[:15]}", domain=realm.host
).addr_spec
user.email = scrubbed_email
user.delivery_email = scrubbed_email
user.save(update_fields=["full_name", "email", "delivery_email"])
internal_realm = get_realm(settings.SYSTEM_BOT_REALM)
# We could more simply obtain the Message list by just doing
# Message.objects.filter(sender__realm=internal_realm, realm=realm), but it's
# more secure against bugs that may cause Message.realm to be incorrect for some
# cross-realm messages to also determine the actual Recipients - to prevent
# deletion of excessive messages.
all_recipient_ids_in_realm = [
*Stream.objects.filter(realm=realm).values_list("recipient_id", flat=True),
*UserProfile.objects.filter(realm=realm).values_list("recipient_id", flat=True),
*Subscription.objects.filter(
recipient__type=Recipient.DIRECT_MESSAGE_GROUP, user_profile__realm=realm
).values_list("recipient_id", flat=True),
]
cross_realm_bot_message_ids = list(
Message.objects.filter(
# Filtering by both message.recipient and message.realm is
# more robust for ensuring no messages belonging to
# another realm will be deleted due to some bugs.
#
# Uses index: zerver_message_realm_sender_recipient
sender__realm=internal_realm,
recipient_id__in=all_recipient_ids_in_realm,
realm=realm,
).values_list("id", flat=True)
)
move_messages_to_archive(cross_realm_bot_message_ids)
do_remove_realm_custom_profile_fields(realm)
do_delete_all_realm_attachments(realm)
RealmAuditLog.objects.create(
realm=realm,
event_time=timezone_now(),
acting_user=acting_user,
event_type=RealmAuditLog.REALM_SCRUBBED,
)
@transaction.atomic(durable=True)
def do_change_realm_org_type(
realm: Realm,
org_type: int,
acting_user: Optional[UserProfile],
) -> None:
old_value = realm.org_type
realm.org_type = org_type
realm.save(update_fields=["org_type"])
RealmAuditLog.objects.create(
event_type=RealmAuditLog.REALM_ORG_TYPE_CHANGED,
realm=realm,
event_time=timezone_now(),
acting_user=acting_user,
extra_data={"old_value": old_value, "new_value": org_type},
)
event = dict(type="realm", op="update", property="org_type", value=org_type)
send_event_on_commit(realm, event, active_user_ids(realm.id))
@transaction.atomic(savepoint=False)
def do_change_realm_plan_type(
realm: Realm, plan_type: int, *, acting_user: Optional[UserProfile]
) -> None:
from zproject.backends import AUTH_BACKEND_NAME_MAP
old_value = realm.plan_type
if plan_type == Realm.PLAN_TYPE_LIMITED:
# We do not allow public access on limited plans.
do_set_realm_property(realm, "enable_spectator_access", False, acting_user=acting_user)
if old_value in [Realm.PLAN_TYPE_PLUS, Realm.PLAN_TYPE_SELF_HOSTED] and plan_type not in [
Realm.PLAN_TYPE_PLUS,
Realm.PLAN_TYPE_SELF_HOSTED,
]:
# If downgrading to a plan that no longer has access to change
# can_access_all_users_group, set it back to the default
# value.
everyone_system_group = NamedUserGroup.objects.get(
name=SystemGroups.EVERYONE, realm=realm, is_system_group=True
)
if realm.can_access_all_users_group_id != everyone_system_group.id:
do_change_realm_permission_group_setting(
realm, "can_access_all_users_group", everyone_system_group, acting_user=acting_user
)
# If downgrading, disable authentication methods that are not available on the new plan.
if settings.BILLING_ENABLED:
realm_authentication_methods = realm.authentication_methods_dict()
for backend_name, enabled in realm_authentication_methods.items():
if enabled and plan_type < old_value:
available_for = AUTH_BACKEND_NAME_MAP[backend_name].available_for_cloud_plans
if available_for is not None and plan_type not in available_for:
realm_authentication_methods[backend_name] = False
if realm_authentication_methods != realm.authentication_methods_dict():
do_set_realm_authentication_methods(
realm, realm_authentication_methods, acting_user=acting_user
)
realm.plan_type = plan_type
realm.save(update_fields=["plan_type"])
RealmAuditLog.objects.create(
event_type=RealmAuditLog.REALM_PLAN_TYPE_CHANGED,
realm=realm,
event_time=timezone_now(),
acting_user=acting_user,
extra_data={"old_value": old_value, "new_value": plan_type},
)
if plan_type == Realm.PLAN_TYPE_PLUS:
realm.max_invites = Realm.INVITES_STANDARD_REALM_DAILY_MAX
realm.message_visibility_limit = None
elif plan_type == Realm.PLAN_TYPE_STANDARD:
realm.max_invites = Realm.INVITES_STANDARD_REALM_DAILY_MAX
realm.message_visibility_limit = None
elif plan_type == Realm.PLAN_TYPE_SELF_HOSTED:
realm.max_invites = None # type: ignore[assignment] # https://github.com/python/mypy/issues/3004
realm.message_visibility_limit = None
elif plan_type == Realm.PLAN_TYPE_STANDARD_FREE:
realm.max_invites = Realm.INVITES_STANDARD_REALM_DAILY_MAX
realm.message_visibility_limit = None
elif plan_type == Realm.PLAN_TYPE_LIMITED:
realm.max_invites = settings.INVITES_DEFAULT_REALM_DAILY_MAX
realm.message_visibility_limit = Realm.MESSAGE_VISIBILITY_LIMITED
else:
raise AssertionError("Invalid plan type")
update_first_visible_message_id(realm)
realm.save(
update_fields=[
"_max_invites",
"enable_spectator_access",
"message_visibility_limit",
]
)
event = {
"type": "realm",
"op": "update",
"property": "plan_type",
"value": plan_type,
"extra_data": {"upload_quota": realm.upload_quota_bytes()},
}
send_event_on_commit(realm, event, active_user_ids(realm.id))
def do_send_realm_reactivation_email(realm: Realm, *, acting_user: Optional[UserProfile]) -> None:
obj = RealmReactivationStatus.objects.create(realm=realm)
url = create_confirmation_link(obj, Confirmation.REALM_REACTIVATION)
RealmAuditLog.objects.create(
realm=realm,
acting_user=acting_user,
event_type=RealmAuditLog.REALM_REACTIVATION_EMAIL_SENT,
event_time=timezone_now(),
)
context = {
"confirmation_url": url,
"realm_url": realm.url,
"realm_name": realm.name,
"corporate_enabled": settings.CORPORATE_ENABLED,
}
language = realm.default_language
send_email_to_admins(
"zerver/emails/realm_reactivation",
realm,
from_address=FromAddress.tokenized_no_reply_address(),
from_name=FromAddress.security_email_from_name(language=language),
language=language,
context=context,
)