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604 lines
27 KiB
Python
604 lines
27 KiB
Python
# See http://zulip.readthedocs.io/en/latest/events-system.html for
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# high-level documentation on how this system works.
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import copy
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import ujson
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from django.utils.translation import ugettext as _
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from django.conf import settings
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from importlib import import_module
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from six.moves import filter, map
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from typing import (
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cast, Any, Callable, Dict, Iterable, List, Optional, Sequence, Set, Text, Tuple, Union
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)
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session_engine = import_module(settings.SESSION_ENGINE)
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from zerver.lib.alert_words import user_alert_words
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from zerver.lib.attachments import user_attachments
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from zerver.lib.avatar import avatar_url, avatar_url_from_dict
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from zerver.lib.hotspots import get_next_hotspots
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from zerver.lib.integrations import EMBEDDED_BOTS
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from zerver.lib.message import (
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aggregate_unread_data,
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apply_unread_message_event,
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get_raw_unread_data,
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)
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from zerver.lib.narrow import check_supported_events_narrow_filter
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from zerver.lib.soft_deactivation import maybe_catch_up_soft_deactivated_user
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from zerver.lib.realm_icon import realm_icon_url
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from zerver.lib.request import JsonableError
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from zerver.lib.topic_mutes import get_topic_mutes
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from zerver.lib.actions import (
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validate_user_access_to_subscribers_helper,
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do_get_streams, get_default_streams_for_realm,
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gather_subscriptions_helper, get_cross_realm_dicts,
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get_status_dict, streams_to_dicts_sorted
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)
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from zerver.lib.upload import get_total_uploads_size_for_user
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from zerver.tornado.event_queue import request_event_queue, get_user_events
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from zerver.models import Client, Message, Realm, UserPresence, UserProfile, \
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get_user_profile_by_id, \
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get_realm_user_dicts, realm_filters_for_realm, get_user,\
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get_owned_bot_dicts, custom_profile_fields_for_realm, get_realm_domains
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from zproject.backends import email_auth_enabled, password_auth_enabled
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from version import ZULIP_VERSION
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def get_raw_user_data(realm_id):
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# type: (int) -> Dict[int, Dict[str, Text]]
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user_dicts = get_realm_user_dicts(realm_id)
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def user_data(row):
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# type: (Dict[str, Any]) -> Dict[str, Any]
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avatar_url = avatar_url_from_dict(row)
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is_admin = row['is_realm_admin']
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return dict(
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email=row['email'],
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user_id=row['id'],
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avatar_url=avatar_url,
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is_admin=is_admin,
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is_bot=row['is_bot'],
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full_name=row['full_name'],
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timezone=row['timezone'],
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is_active = row['is_active'],
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)
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return {
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row['id']: user_data(row)
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for row in user_dicts
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}
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def always_want(msg_type):
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# type: (str) -> bool
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'''
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This function is used as a helper in
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fetch_initial_state_data, when the user passes
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in None for event_types, and we want to fetch
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info for every event type. Defining this at module
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level makes it easier to mock.
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'''
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return True
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# Fetch initial data. When event_types is not specified, clients want
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# all event types. Whenever you add new code to this function, you
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# should also add corresponding events for changes in the data
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# structures and new code to apply_events (and add a test in EventsRegisterTest).
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def fetch_initial_state_data(user_profile, event_types, queue_id,
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include_subscribers=True):
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# type: (UserProfile, Optional[Iterable[str]], str, bool) -> Dict[str, Any]
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state = {'queue_id': queue_id} # type: Dict[str, Any]
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if event_types is None:
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# return True always
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want = always_want # type: Callable[[str], bool]
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else:
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want = set(event_types).__contains__
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if want('alert_words'):
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state['alert_words'] = user_alert_words(user_profile)
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if want('custom_profile_fields'):
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fields = custom_profile_fields_for_realm(user_profile.realm.id)
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state['custom_profile_fields'] = [f.as_dict() for f in fields]
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if want('attachments'):
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state['attachments'] = user_attachments(user_profile)
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if want('upload_quota'):
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state['upload_quota'] = user_profile.quota
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if want('total_uploads_size'):
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state['total_uploads_size'] = get_total_uploads_size_for_user(user_profile)
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if want('hotspots'):
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state['hotspots'] = get_next_hotspots(user_profile)
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if want('message'):
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# The client should use get_messages() to fetch messages
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# starting with the max_message_id. They will get messages
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# newer than that ID via get_events()
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messages = Message.objects.filter(usermessage__user_profile=user_profile).order_by('-id')[:1]
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if messages:
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state['max_message_id'] = messages[0].id
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else:
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state['max_message_id'] = -1
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if want('muted_topics'):
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state['muted_topics'] = get_topic_mutes(user_profile)
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if want('pointer'):
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state['pointer'] = user_profile.pointer
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if want('presence'):
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state['presences'] = get_status_dict(user_profile)
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if want('realm'):
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for property_name in Realm.property_types:
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state['realm_' + property_name] = getattr(user_profile.realm, property_name)
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# Most state is handled via the property_types framework;
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# these manual entries are for those realm settings that don't
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# fit into that framework.
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state['realm_authentication_methods'] = user_profile.realm.authentication_methods_dict()
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state['realm_allow_message_editing'] = user_profile.realm.allow_message_editing
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state['realm_message_content_edit_limit_seconds'] = user_profile.realm.message_content_edit_limit_seconds
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state['realm_icon_url'] = realm_icon_url(user_profile.realm)
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state['realm_icon_source'] = user_profile.realm.icon_source
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state['max_icon_file_size'] = settings.MAX_ICON_FILE_SIZE
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state['realm_bot_domain'] = user_profile.realm.get_bot_domain()
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state['realm_uri'] = user_profile.realm.uri
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state['realm_presence_disabled'] = user_profile.realm.presence_disabled
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state['realm_show_digest_email'] = user_profile.realm.show_digest_email
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state['realm_is_zephyr_mirror_realm'] = user_profile.realm.is_zephyr_mirror_realm
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state['realm_email_auth_enabled'] = email_auth_enabled(user_profile.realm)
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state['realm_password_auth_enabled'] = password_auth_enabled(user_profile.realm)
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if user_profile.realm.notifications_stream and not user_profile.realm.notifications_stream.deactivated:
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notifications_stream = user_profile.realm.notifications_stream
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state['realm_notifications_stream_id'] = notifications_stream.id
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else:
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state['realm_notifications_stream_id'] = -1
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if want('realm_domains'):
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state['realm_domains'] = get_realm_domains(user_profile.realm)
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if want('realm_emoji'):
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state['realm_emoji'] = user_profile.realm.get_emoji()
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if want('realm_filters'):
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state['realm_filters'] = realm_filters_for_realm(user_profile.realm_id)
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if want('realm_user'):
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state['raw_users'] = get_raw_user_data(user_profile.realm_id)
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state['avatar_source'] = user_profile.avatar_source
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state['avatar_url_medium'] = avatar_url(user_profile, medium=True)
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state['avatar_url'] = avatar_url(user_profile)
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state['can_create_streams'] = user_profile.can_create_streams()
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state['cross_realm_bots'] = list(get_cross_realm_dicts())
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state['is_admin'] = user_profile.is_realm_admin
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state['user_id'] = user_profile.id
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state['enter_sends'] = user_profile.enter_sends
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state['email'] = user_profile.email
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state['full_name'] = user_profile.full_name
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if want('realm_bot'):
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state['realm_bots'] = get_owned_bot_dicts(user_profile)
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# This does not yet have an apply_event counterpart, since currently,
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# new entries for EMBEDDED_BOTS can only be added directly in the codebase.
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if want('realm_embedded_bots'):
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state['realm_embedded_bots'] = list(bot.name for bot in EMBEDDED_BOTS)
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if want('subscription'):
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subscriptions, unsubscribed, never_subscribed = gather_subscriptions_helper(
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user_profile, include_subscribers=include_subscribers)
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state['subscriptions'] = subscriptions
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state['unsubscribed'] = unsubscribed
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state['never_subscribed'] = never_subscribed
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if want('update_message_flags') and want('message'):
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# Keeping unread_msgs updated requires both message flag updates and
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# message updates. This is due to the fact that new messages will not
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# generate a flag update so we need to use the flags field in the
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# message event.
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state['raw_unread_msgs'] = get_raw_unread_data(user_profile)
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if want('stream'):
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state['streams'] = do_get_streams(user_profile)
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if want('default_streams'):
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state['realm_default_streams'] = streams_to_dicts_sorted(get_default_streams_for_realm(user_profile.realm_id))
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if want('update_display_settings'):
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for prop in UserProfile.property_types:
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state[prop] = getattr(user_profile, prop)
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state['emojiset_choices'] = user_profile.emojiset_choices()
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state['autoscroll_forever'] = user_profile.autoscroll_forever
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if want('update_global_notifications'):
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for notification in UserProfile.notification_setting_types:
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state[notification] = getattr(user_profile, notification)
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state['default_desktop_notifications'] = user_profile.default_desktop_notifications
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if want('zulip_version'):
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state['zulip_version'] = ZULIP_VERSION
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return state
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def remove_message_id_from_unread_mgs(state, message_id):
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# type: (Dict[str, Dict[str, Any]], int) -> None
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raw_unread = state['raw_unread_msgs']
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for key in ['pm_dict', 'stream_dict', 'huddle_dict']:
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raw_unread[key].pop(message_id, None)
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raw_unread['unmuted_stream_msgs'].discard(message_id)
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raw_unread['mentions'].discard(message_id)
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def apply_events(state, events, user_profile, include_subscribers=True,
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fetch_event_types=None):
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# type: (Dict[str, Any], Iterable[Dict[str, Any]], UserProfile, bool, Optional[Iterable[str]]) -> None
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for event in events:
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if fetch_event_types is not None and event['type'] not in fetch_event_types:
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# TODO: continuing here is not, most precisely, correct.
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# In theory, an event of one type, e.g. `realm_user`,
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# could modify state that doesn't come from that
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# `fetch_event_types` value, e.g. the `our_person` part of
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# that code path. But it should be extremely rare, and
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# fixing that will require a nontrivial refactor of
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# `apply_event`. For now, be careful in your choice of
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# `fetch_event_types`.
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continue
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apply_event(state, event, user_profile, include_subscribers)
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def apply_event(state, event, user_profile, include_subscribers):
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# type: (Dict[str, Any], Dict[str, Any], UserProfile, bool) -> None
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if event['type'] == "message":
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state['max_message_id'] = max(state['max_message_id'], event['message']['id'])
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if 'raw_unread_msgs' in state:
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apply_unread_message_event(
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user_profile,
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state['raw_unread_msgs'],
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event['message'],
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event['flags'],
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)
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elif event['type'] == "hotspots":
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state['hotspots'] = event['hotspots']
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elif event['type'] == "custom_profile_fields":
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state['custom_profile_fields'] = event['fields']
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elif event['type'] == "pointer":
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state['pointer'] = max(state['pointer'], event['pointer'])
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elif event['type'] == "realm_user":
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person = event['person']
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person_user_id = person['user_id']
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if event['op'] == "add":
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person = copy.deepcopy(person)
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person['is_active'] = True
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state['raw_users'][person_user_id] = person
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elif event['op'] == "remove":
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state['raw_users'][person_user_id]['is_active'] = False
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elif event['op'] == 'update':
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is_me = (person_user_id == user_profile.id)
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if is_me:
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if ('avatar_url' in person and 'avatar_url' in state):
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state['avatar_source'] = person['avatar_source']
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state['avatar_url'] = person['avatar_url']
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state['avatar_url_medium'] = person['avatar_url_medium']
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for field in ['is_admin', 'email', 'full_name']:
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if field in person and field in state:
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state[field] = person[field]
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# In the unlikely event that the current user
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# just changed to/from being an admin, we need
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# to add/remove the data on all bots in the
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# realm. This is ugly and probably better
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# solved by removing the all-realm-bots data
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# given to admin users from this flow.
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if ('is_admin' in person and 'realm_bots' in state):
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prev_state = state['raw_users'][user_profile.id]
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was_admin = prev_state['is_admin']
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now_admin = person['is_admin']
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if was_admin and not now_admin:
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state['realm_bots'] = []
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if not was_admin and now_admin:
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state['realm_bots'] = get_owned_bot_dicts(user_profile)
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if person_user_id in state['raw_users']:
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p = state['raw_users'][person_user_id]
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for field in p:
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if field in person:
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p[field] = person[field]
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elif event['type'] == 'realm_bot':
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if event['op'] == 'add':
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state['realm_bots'].append(event['bot'])
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if event['op'] == 'remove':
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email = event['bot']['email']
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for bot in state['realm_bots']:
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if bot['email'] == email:
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bot['is_active'] = False
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if event['op'] == 'update':
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for bot in state['realm_bots']:
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if bot['email'] == event['bot']['email']:
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if 'owner_id' in event['bot']:
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bot['owner'] = get_user_profile_by_id(event['bot']['owner_id']).email
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else:
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bot.update(event['bot'])
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elif event['type'] == 'stream':
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if event['op'] == 'create':
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for stream in event['streams']:
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if not stream['invite_only']:
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stream_data = copy.deepcopy(stream)
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if include_subscribers:
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stream_data['subscribers'] = []
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# Add stream to never_subscribed (if not invite_only)
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state['never_subscribed'].append(stream_data)
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state['streams'].append(stream)
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state['streams'].sort(key=lambda elt: elt["name"])
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if event['op'] == 'delete':
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deleted_stream_ids = {stream['stream_id'] for stream in event['streams']}
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state['streams'] = [s for s in state['streams'] if s['stream_id'] not in deleted_stream_ids]
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state['never_subscribed'] = [stream for stream in state['never_subscribed'] if
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stream['stream_id'] not in deleted_stream_ids]
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if event['op'] == 'update':
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# For legacy reasons, we call stream data 'subscriptions' in
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# the state var here, for the benefit of the JS code.
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for obj in state['subscriptions']:
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if obj['name'].lower() == event['name'].lower():
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obj[event['property']] = event['value']
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# Also update the pure streams data
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for stream in state['streams']:
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if stream['name'].lower() == event['name'].lower():
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prop = event['property']
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if prop in stream:
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stream[prop] = event['value']
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elif event['op'] == "occupy":
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state['streams'] += event['streams']
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elif event['op'] == "vacate":
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stream_ids = [s["stream_id"] for s in event['streams']]
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state['streams'] = [s for s in state['streams'] if s["stream_id"] not in stream_ids]
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elif event['type'] == 'default_streams':
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state['realm_default_streams'] = event['default_streams']
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elif event['type'] == 'realm':
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if event['op'] == "update":
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field = 'realm_' + event['property']
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state[field] = event['value']
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# Tricky interaction: Whether we can create streams can get changed here.
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if (field in ['realm_create_stream_by_admins_only',
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'realm_waiting_period_threshold']) and 'can_create_streams' in state:
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state['can_create_streams'] = user_profile.can_create_streams()
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elif event['op'] == "update_dict":
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for key, value in event['data'].items():
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state['realm_' + key] = value
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# It's a bit messy, but this is where we need to
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# update the state for whether password authentication
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# is enabled on this server.
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if key == 'authentication_methods':
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state['realm_password_auth_enabled'] = (value['Email'] or value['LDAP'])
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state['realm_email_auth_enabled'] = value['Email']
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elif event['type'] == "subscription":
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if not include_subscribers and event['op'] in ['peer_add', 'peer_remove']:
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return
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if event['op'] in ["add"]:
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if not include_subscribers:
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# Avoid letting 'subscribers' entries end up in the list
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for i, sub in enumerate(event['subscriptions']):
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event['subscriptions'][i] = copy.deepcopy(event['subscriptions'][i])
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del event['subscriptions'][i]['subscribers']
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def name(sub):
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# type: (Dict[str, Any]) -> Text
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return sub['name'].lower()
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if event['op'] == "add":
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added_names = set(map(name, event["subscriptions"]))
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was_added = lambda s: name(s) in added_names
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# add the new subscriptions
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state['subscriptions'] += event['subscriptions']
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# remove them from unsubscribed if they had been there
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state['unsubscribed'] = [s for s in state['unsubscribed'] if not was_added(s)]
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# remove them from never_subscribed if they had been there
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state['never_subscribed'] = [s for s in state['never_subscribed'] if not was_added(s)]
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elif event['op'] == "remove":
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removed_names = set(map(name, event["subscriptions"]))
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was_removed = lambda s: name(s) in removed_names
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# Find the subs we are affecting.
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removed_subs = list(filter(was_removed, state['subscriptions']))
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# Remove our user from the subscribers of the removed subscriptions.
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if include_subscribers:
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for sub in removed_subs:
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sub['subscribers'] = [id for id in sub['subscribers'] if id != user_profile.id]
|
|
|
|
# We must effectively copy the removed subscriptions from subscriptions to
|
|
# unsubscribe, since we only have the name in our data structure.
|
|
state['unsubscribed'] += removed_subs
|
|
|
|
# Now filter out the removed subscriptions from subscriptions.
|
|
state['subscriptions'] = [s for s in state['subscriptions'] if not was_removed(s)]
|
|
|
|
elif event['op'] == 'update':
|
|
for sub in state['subscriptions']:
|
|
if sub['name'].lower() == event['name'].lower():
|
|
sub[event['property']] = event['value']
|
|
elif event['op'] == 'peer_add':
|
|
user_id = event['user_id']
|
|
for sub in state['subscriptions']:
|
|
if (sub['name'] in event['subscriptions'] and
|
|
user_id not in sub['subscribers']):
|
|
sub['subscribers'].append(user_id)
|
|
for sub in state['never_subscribed']:
|
|
if (sub['name'] in event['subscriptions'] and
|
|
user_id not in sub['subscribers']):
|
|
sub['subscribers'].append(user_id)
|
|
elif event['op'] == 'peer_remove':
|
|
user_id = event['user_id']
|
|
for sub in state['subscriptions']:
|
|
if (sub['name'] in event['subscriptions'] and
|
|
user_id in sub['subscribers']):
|
|
sub['subscribers'].remove(user_id)
|
|
elif event['type'] == "presence":
|
|
# TODO: Add user_id to presence update events / state format!
|
|
presence_user_profile = get_user(event['email'], user_profile.realm)
|
|
state['presences'][event['email']] = UserPresence.get_status_dict_by_user(
|
|
presence_user_profile)[event['email']]
|
|
elif event['type'] == "update_message":
|
|
# We don't return messages in /register, so we don't need to
|
|
# do anything for content updates, but we may need to update
|
|
# the unread_msgs data if the topic of an unread message changed.
|
|
if 'subject' in event:
|
|
stream_dict = state['raw_unread_msgs']['stream_dict']
|
|
topic = event['subject']
|
|
for message_id in event['message_ids']:
|
|
if message_id in stream_dict:
|
|
stream_dict[message_id]['topic'] = topic
|
|
elif event['type'] == "delete_message":
|
|
max_message = Message.objects.filter(
|
|
usermessage__user_profile=user_profile).order_by('-id').first()
|
|
if max_message:
|
|
state['max_message_id'] = max_message.id
|
|
else:
|
|
state['max_message_id'] = -1
|
|
|
|
remove_id = event['message_id']
|
|
remove_message_id_from_unread_mgs(state, remove_id)
|
|
elif event['type'] == "reaction":
|
|
# The client will get the message with the reactions directly
|
|
pass
|
|
elif event['type'] == 'typing':
|
|
# Typing notification events are transient and thus ignored
|
|
pass
|
|
elif event['type'] == "update_message_flags":
|
|
# We don't return messages in `/register`, so most flags we
|
|
# can ignore, but we do need to update the unread_msgs data if
|
|
# unread state is changed.
|
|
if event['flag'] == 'read' and event['operation'] == 'add':
|
|
for remove_id in event['messages']:
|
|
remove_message_id_from_unread_mgs(state, remove_id)
|
|
elif event['type'] == "realm_domains":
|
|
if event['op'] == 'add':
|
|
state['realm_domains'].append(event['realm_domain'])
|
|
elif event['op'] == 'change':
|
|
for realm_domain in state['realm_domains']:
|
|
if realm_domain['domain'] == event['realm_domain']['domain']:
|
|
realm_domain['allow_subdomains'] = event['realm_domain']['allow_subdomains']
|
|
elif event['op'] == 'remove':
|
|
state['realm_domains'] = [realm_domain for realm_domain in state['realm_domains']
|
|
if realm_domain['domain'] != event['domain']]
|
|
elif event['type'] == "realm_emoji":
|
|
state['realm_emoji'] = event['realm_emoji']
|
|
elif event['type'] == "alert_words":
|
|
state['alert_words'] = event['alert_words']
|
|
elif event['type'] == "muted_topics":
|
|
state['muted_topics'] = event["muted_topics"]
|
|
elif event['type'] == "realm_filters":
|
|
state['realm_filters'] = event["realm_filters"]
|
|
elif event['type'] == "update_display_settings":
|
|
assert event['setting_name'] in UserProfile.property_types
|
|
state[event['setting_name']] = event['setting']
|
|
elif event['type'] == "update_global_notifications":
|
|
assert event['notification_name'] in UserProfile.notification_setting_types
|
|
state[event['notification_name']] = event['setting']
|
|
else:
|
|
raise AssertionError("Unexpected event type %s" % (event['type'],))
|
|
|
|
def do_events_register(user_profile, user_client, apply_markdown=True,
|
|
event_types=None, queue_lifespan_secs=0, all_public_streams=False,
|
|
include_subscribers=True, narrow=[], fetch_event_types=None):
|
|
# type: (UserProfile, Client, bool, Optional[Iterable[str]], int, bool, bool, Iterable[Sequence[Text]], Optional[Iterable[str]]) -> Dict[str, Any]
|
|
|
|
# Technically we don't need to check this here because
|
|
# build_narrow_filter will check it, but it's nicer from an error
|
|
# handling perspective to do it before contacting Tornado
|
|
check_supported_events_narrow_filter(narrow)
|
|
|
|
# Note that we pass event_types, not fetch_event_types here, since
|
|
# that's what controls which future events are sent.
|
|
queue_id = request_event_queue(user_profile, user_client, apply_markdown,
|
|
queue_lifespan_secs, event_types, all_public_streams,
|
|
narrow=narrow)
|
|
|
|
if queue_id is None:
|
|
raise JsonableError(_("Could not allocate event queue"))
|
|
|
|
if fetch_event_types is not None:
|
|
event_types_set = set(fetch_event_types) # type: Optional[Set[str]]
|
|
elif event_types is not None:
|
|
event_types_set = set(event_types)
|
|
else:
|
|
event_types_set = None
|
|
|
|
# Fill up the UserMessage rows if a soft-deactivated user has returned
|
|
maybe_catch_up_soft_deactivated_user(user_profile)
|
|
|
|
ret = fetch_initial_state_data(user_profile, event_types_set, queue_id,
|
|
include_subscribers=include_subscribers)
|
|
|
|
# Apply events that came in while we were fetching initial data
|
|
events = get_user_events(user_profile, queue_id, -1)
|
|
apply_events(ret, events, user_profile, include_subscribers=include_subscribers,
|
|
fetch_event_types=fetch_event_types)
|
|
|
|
'''
|
|
NOTE:
|
|
|
|
Below is an example of post-processing initial state data AFTER we
|
|
apply events. For large payloads like `unread_msgs`, it's helpful
|
|
to have an intermediate data structure that is easy to manipulate
|
|
with O(1)-type operations as we apply events.
|
|
|
|
Then, only at the end, we put it in the form that's more appropriate
|
|
for client.
|
|
'''
|
|
if 'raw_unread_msgs' in ret:
|
|
ret['unread_msgs'] = aggregate_unread_data(ret['raw_unread_msgs'])
|
|
del ret['raw_unread_msgs']
|
|
|
|
'''
|
|
See the note above; the same technique applies below.
|
|
'''
|
|
if 'raw_users'in ret:
|
|
user_dicts = list(ret['raw_users'].values())
|
|
|
|
ret['realm_users'] = [d for d in user_dicts if d['is_active']]
|
|
ret['realm_non_active_users'] = [d for d in user_dicts if not d['is_active']]
|
|
|
|
'''
|
|
Be aware that we do intentional aliasing in the below code.
|
|
We can now safely remove the `is_active` field from all the
|
|
dicts that got partitioned into the two lists above.
|
|
|
|
We remove the field because it's already implied, and sending
|
|
it to clients makes clients prone to bugs where they "trust"
|
|
the field but don't actually update in live updates. It also
|
|
wastes bandwidth.
|
|
'''
|
|
for d in user_dicts:
|
|
d.pop('is_active')
|
|
|
|
del ret['raw_users']
|
|
|
|
if len(events) > 0:
|
|
ret['last_event_id'] = events[-1]['id']
|
|
else:
|
|
ret['last_event_id'] = -1
|
|
return ret
|