# See http://zulip.readthedocs.io/en/latest/events-system.html for # high-level documentation on how this system works. from __future__ import absolute_import from __future__ import print_function import copy import six import ujson from django.utils.translation import ugettext as _ from django.conf import settings from importlib import import_module from six.moves import filter, map from typing import ( Any, Dict, Iterable, List, Optional, Sequence, Set, Text, Tuple ) session_engine = import_module(settings.SESSION_ENGINE) from zerver.lib.alert_words import user_alert_words from zerver.lib.attachments import user_attachments from zerver.lib.avatar import get_avatar_url from zerver.lib.narrow import check_supported_events_narrow_filter from zerver.lib.realm_icon import realm_icon_url from zerver.lib.request import JsonableError from zerver.lib.actions import validate_user_access_to_subscribers_helper, \ do_get_streams, get_default_streams_for_realm, \ gather_subscriptions_helper, get_realm_aliases, \ get_status_dict, streams_to_dicts_sorted from zerver.tornado.event_queue import request_event_queue, get_user_events from zerver.models import Client, Message, UserProfile, \ get_user_profile_by_email, get_user_profile_by_id, \ get_active_user_dicts_in_realm, realm_filters_for_realm, \ get_owned_bot_dicts from version import ZULIP_VERSION def get_realm_user_dicts(user_profile): # type: (UserProfile) -> List[Dict[str, Text]] def avatar_url(userdict): # type: (Dict[str, Any]) -> Text return get_avatar_url(userdict['avatar_source'], userdict['email'], userdict['avatar_version'], ) return [{'email': userdict['email'], 'user_id': userdict['id'], 'avatar_url': avatar_url(userdict), 'is_admin': userdict['is_realm_admin'], 'is_bot': userdict['is_bot'], 'full_name': userdict['full_name']} for userdict in get_active_user_dicts_in_realm(user_profile.realm)] # Fetch initial data. When event_types is not specified, clients want # all event types. Whenever you add new code to this function, you # should also add corresponding events for changes in the data # structures and new code to apply_events (and add a test in EventsRegisterTest). def fetch_initial_state_data(user_profile, event_types, queue_id, include_subscribers=True): # type: (UserProfile, Optional[Iterable[str]], str, bool) -> Dict[str, Any] state = {'queue_id': queue_id} # type: Dict[str, Any] if event_types is None: want = lambda msg_type: True else: want = set(event_types).__contains__ if want('alert_words'): state['alert_words'] = user_alert_words(user_profile) if want('attachments'): state['attachments'] = user_attachments(user_profile) if want('message'): # The client should use get_old_messages() to fetch messages # starting with the max_message_id. They will get messages # newer than that ID via get_events() messages = Message.objects.filter(usermessage__user_profile=user_profile).order_by('-id')[:1] if messages: state['max_message_id'] = messages[0].id else: state['max_message_id'] = -1 if want('muted_topics'): state['muted_topics'] = ujson.loads(user_profile.muted_topics) if want('pointer'): state['pointer'] = user_profile.pointer if want('presence'): state['presences'] = get_status_dict(user_profile) if want('realm'): state['realm_name'] = user_profile.realm.name state['realm_description'] = user_profile.realm.description state['realm_restricted_to_domain'] = user_profile.realm.restricted_to_domain state['realm_invite_required'] = user_profile.realm.invite_required state['realm_invite_by_admins_only'] = user_profile.realm.invite_by_admins_only state['realm_authentication_methods'] = user_profile.realm.authentication_methods_dict() state['realm_create_stream_by_admins_only'] = user_profile.realm.create_stream_by_admins_only state['realm_add_emoji_by_admins_only'] = user_profile.realm.add_emoji_by_admins_only state['realm_allow_message_editing'] = user_profile.realm.allow_message_editing state['realm_message_content_edit_limit_seconds'] = user_profile.realm.message_content_edit_limit_seconds state['realm_default_language'] = user_profile.realm.default_language state['realm_waiting_period_threshold'] = user_profile.realm.waiting_period_threshold state['realm_icon_url'] = realm_icon_url(user_profile.realm) state['realm_icon_source'] = user_profile.realm.icon_source state['realm_name_changes_disabled'] = user_profile.realm.name_changes_disabled state['realm_email_changes_disabled'] = user_profile.realm.email_changes_disabled state['max_icon_file_size'] = settings.MAX_ICON_FILE_SIZE state['realm_bot_domain'] = user_profile.realm.get_bot_domain() if want('realm_domains'): state['realm_domains'] = get_realm_aliases(user_profile.realm) if want('realm_emoji'): state['realm_emoji'] = user_profile.realm.get_emoji() if want('realm_filters'): state['realm_filters'] = realm_filters_for_realm(user_profile.realm_id) if want('realm_user'): state['realm_users'] = get_realm_user_dicts(user_profile) if want('realm_bot'): state['realm_bots'] = get_owned_bot_dicts(user_profile) if want('referral'): state['referrals'] = {'granted': user_profile.invites_granted, 'used': user_profile.invites_used} if want('subscription'): subscriptions, unsubscribed, never_subscribed = gather_subscriptions_helper( user_profile, include_subscribers=include_subscribers) state['subscriptions'] = subscriptions state['unsubscribed'] = unsubscribed state['never_subscribed'] = never_subscribed if want('update_message_flags'): # There's no initial data for message flag updates, client will # get any updates during a session from get_events() pass if want('stream'): state['streams'] = do_get_streams(user_profile) if want('default_streams'): state['realm_default_streams'] = streams_to_dicts_sorted(get_default_streams_for_realm(user_profile.realm)) if want('update_display_settings'): state['twenty_four_hour_time'] = user_profile.twenty_four_hour_time state['left_side_userlist'] = user_profile.left_side_userlist state['emoji_alt_code'] = user_profile.emoji_alt_code default_language = user_profile.default_language state['default_language'] = default_language if want('update_global_notifications'): state['enable_stream_desktop_notifications'] = user_profile.enable_stream_desktop_notifications state['enable_stream_sounds'] = user_profile.enable_stream_sounds state['enable_desktop_notifications'] = user_profile.enable_desktop_notifications state['enable_sounds'] = user_profile.enable_sounds state['enable_offline_email_notifications'] = user_profile.enable_offline_email_notifications state['enable_offline_push_notifications'] = user_profile.enable_offline_push_notifications state['enable_online_push_notifications'] = user_profile.enable_online_push_notifications state['enable_digest_emails'] = user_profile.enable_digest_emails if want('zulip_version'): state['zulip_version'] = ZULIP_VERSION return state def apply_events(state, events, user_profile, include_subscribers=True): # type: (Dict[str, Any], Iterable[Dict[str, Any]], UserProfile, bool) -> None for event in events: apply_event(state, event, user_profile, include_subscribers) def apply_event(state, event, user_profile, include_subscribers): # type: (Dict[str, Any], Dict[str, Any], UserProfile, bool) -> None if event['type'] == "message": state['max_message_id'] = max(state['max_message_id'], event['message']['id']) elif event['type'] == "pointer": state['pointer'] = max(state['pointer'], event['pointer']) elif event['type'] == "realm_user": person = event['person'] def our_person(p): # type: (Dict[str, Any]) -> bool return p['user_id'] == person['user_id'] if event['op'] == "add": state['realm_users'].append(person) elif event['op'] == "remove": state['realm_users'] = [user for user in state['realm_users'] if not our_person(user)] elif event['op'] == 'update': for p in state['realm_users']: if our_person(p): # In the unlikely event that the current user # just changed to/from being an admin, we need # to add/remove the data on all bots in the # realm. This is ugly and probably better # solved by removing the all-realm-bots data # given to admin users from this flow. if ('is_admin' in person and 'realm_bots' in state and user_profile.email == person['email']): if p['is_admin'] and not person['is_admin']: state['realm_bots'] = [] if not p['is_admin'] and person['is_admin']: state['realm_bots'] = get_owned_bot_dicts(user_profile) # Now update the person p.update(person) elif event['type'] == 'realm_bot': if event['op'] == 'add': state['realm_bots'].append(event['bot']) if event['op'] == 'remove': email = event['bot']['email'] for bot in state['realm_bots']: if bot['email'] == email: bot['is_active'] = False if event['op'] == 'update': for bot in state['realm_bots']: if bot['email'] == event['bot']['email']: if 'owner_id' in event['bot']: bot['owner'] = get_user_profile_by_id(event['bot']['owner_id']).email else: bot.update(event['bot']) elif event['type'] == 'stream': if event['op'] == 'create': for stream in event['streams']: if not stream['invite_only']: stream_data = copy.deepcopy(stream) if include_subscribers: stream_data['subscribers'] = [] # Add stream to never_subscribed (if not invite_only) state['never_subscribed'].append(stream_data) if event['op'] == 'delete': deleted_stream_ids = {stream['stream_id'] for stream in event['streams']} state['streams'] = [s for s in state['streams'] if s['stream_id'] not in deleted_stream_ids] state['never_subscribed'] = [stream for stream in state['never_subscribed'] if stream['stream_id'] not in deleted_stream_ids] if event['op'] == 'update': # For legacy reasons, we call stream data 'subscriptions' in # the state var here, for the benefit of the JS code. for obj in state['subscriptions']: if obj['name'].lower() == event['name'].lower(): obj[event['property']] = event['value'] # Also update the pure streams data for stream in state['streams']: if stream['name'].lower() == event['name'].lower(): prop = event['property'] if prop in stream: stream[prop] = event['value'] elif event['op'] == "occupy": state['streams'] += event['streams'] elif event['op'] == "vacate": stream_ids = [s["stream_id"] for s in event['streams']] state['streams'] = [s for s in state['streams'] if s["stream_id"] not in stream_ids] elif event['type'] == 'default_streams': state['realm_default_streams'] = event['default_streams'] elif event['type'] == 'realm': if event['op'] == "update": field = 'realm_' + event['property'] state[field] = event['value'] elif event['op'] == "update_dict": for key, value in event['data'].items(): state['realm_' + key] = value elif event['type'] == "subscription": if not include_subscribers and event['op'] in ['peer_add', 'peer_remove']: return if event['op'] in ["add"]: if include_subscribers: # Convert the emails to user_profile IDs since that's what register() returns # TODO: Clean up this situation by making the event also have IDs for item in event["subscriptions"]: item["subscribers"] = [get_user_profile_by_email(email).id for email in item["subscribers"]] else: # Avoid letting 'subscribers' entries end up in the list for i, sub in enumerate(event['subscriptions']): event['subscriptions'][i] = copy.deepcopy(event['subscriptions'][i]) del event['subscriptions'][i]['subscribers'] def name(sub): # type: (Dict[str, Any]) -> Text return sub['name'].lower() if event['op'] == "add": added_names = set(map(name, event["subscriptions"])) was_added = lambda s: name(s) in added_names # add the new subscriptions state['subscriptions'] += event['subscriptions'] # remove them from unsubscribed if they had been there state['unsubscribed'] = [s for s in state['unsubscribed'] if not was_added(s)] # remove them from never_subscribed if they had been there state['never_subscribed'] = [s for s in state['never_subscribed'] if not was_added(s)] elif event['op'] == "remove": removed_names = set(map(name, event["subscriptions"])) was_removed = lambda s: name(s) in removed_names # Find the subs we are affecting. removed_subs = list(filter(was_removed, state['subscriptions'])) # Remove our user from the subscribers of the removed subscriptions. if include_subscribers: for sub in removed_subs: 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": state['presences'][event['email']] = event['presence'] elif event['type'] == "update_message": # The client will get the updated message directly pass elif event['type'] == "reaction": # The client will get the message with the reactions directly pass elif event['type'] == "referral": state['referrals'] = event['referrals'] elif event['type'] == 'typing': # Typing notification events are transient and thus ignored pass elif event['type'] == "update_message_flags": # The client will get the message with the updated flags directly pass elif event['type'] == "realm_domains": if event['op'] == 'add': state['realm_domains'].append(event['alias']) elif event['op'] == 'change': for realm_domain in state['realm_domains']: if realm_domain['domain'] == event['alias']['domain']: realm_domain['allow_subdomains'] = event['alias']['allow_subdomains'] elif event['op'] == 'remove': state['realm_domains'] = [alias for alias in state['realm_domains'] if alias['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": if event['setting_name'] == "twenty_four_hour_time": state['twenty_four_hour_time'] = event["setting"] if event['setting_name'] == 'left_side_userlist': state['left_side_userlist'] = event["setting"] if event['setting_name'] == 'emoji_alt_code': state['emoji_alt_code'] = event["setting"] elif event['type'] == "update_global_notifications": if event['notification_name'] == "enable_stream_desktop_notifications": state['enable_stream_desktop_notifications'] = event['setting'] elif event['notification_name'] == "enable_stream_sounds": state['enable_stream_sounds'] = event['setting'] elif event['notification_name'] == "enable_desktop_notifications": state['enable_desktop_notifications'] = event['setting'] elif event['notification_name'] == "enable_sounds": state['enable_sounds'] = event['setting'] elif event['notification_name'] == "enable_offline_email_notifications": state['enable_offline_email_notifications'] = event['setting'] elif event['notification_name'] == "enable_offline_push_notifications": state['enable_offline_push_notifications'] = event['setting'] elif event['notification_name'] == "enable_online_push_notifications": state['enable_online_push_notifications'] = event['setting'] elif event['notification_name'] == "enable_digest_emails": state['enable_digest_emails'] = event['setting'] else: raise ValueError("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=[]): # type: (UserProfile, Client, bool, Optional[Iterable[str]], int, bool, bool, Iterable[Sequence[Text]]) -> 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) 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 event_types is not None: event_types_set = set(event_types) # type: Optional[Set[str]] else: event_types_set = None 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) if len(events) > 0: ret['last_event_id'] = events[-1]['id'] else: ret['last_event_id'] = -1 return ret