import datetime import re import secrets import time from datetime import timedelta from email.headerregistry import Address from typing import ( TYPE_CHECKING, AbstractSet, Any, Callable, Dict, List, Optional, Pattern, Sequence, Set, Tuple, TypedDict, TypeVar, Union, ) from uuid import uuid4 import django.contrib.auth import orjson import re2 from bitfield import BitField from bitfield.types import Bit, BitHandler from django.conf import settings from django.contrib.auth.models import ( AbstractBaseUser, AnonymousUser, PermissionsMixin, UserManager, ) from django.contrib.contenttypes.fields import GenericRelation from django.contrib.postgres.indexes import GinIndex from django.contrib.postgres.search import SearchVectorField from django.core.exceptions import ValidationError from django.core.validators import MinLengthValidator, RegexValidator, URLValidator, validate_email from django.db import models, transaction from django.db.backends.base.base import BaseDatabaseWrapper from django.db.models import CASCADE, Exists, F, OuterRef, Q, Sum from django.db.models.functions import Upper from django.db.models.query import QuerySet from django.db.models.signals import post_delete, post_save, pre_delete from django.db.models.sql.compiler import SQLCompiler from django.utils.timezone import now as timezone_now from django.utils.translation import gettext as _ from django.utils.translation import gettext_lazy from django_cte import CTEManager from django_stubs_ext import StrPromise, ValuesQuerySet from confirmation import settings as confirmation_settings from zerver.lib import cache from zerver.lib.cache import ( active_non_guest_user_ids_cache_key, active_user_ids_cache_key, bot_dict_fields, bot_dicts_in_realm_cache_key, bot_profile_cache_key, bulk_cached_fetch, cache_delete, cache_set, cache_with_key, flush_message, flush_muting_users_cache, flush_realm, flush_stream, flush_submessage, flush_used_upload_space_cache, flush_user_profile, get_realm_used_upload_space_cache_key, get_stream_cache_key, realm_alert_words_automaton_cache_key, realm_alert_words_cache_key, realm_user_dict_fields, realm_user_dicts_cache_key, user_profile_by_api_key_cache_key, user_profile_by_id_cache_key, user_profile_cache_key, ) from zerver.lib.exceptions import JsonableError, RateLimited from zerver.lib.pysa import mark_sanitized from zerver.lib.timestamp import datetime_to_timestamp from zerver.lib.types import ( APIStreamDict, DisplayRecipientT, ExtendedFieldElement, ExtendedValidator, FieldElement, LinkifierDict, ProfileData, ProfileDataElementBase, ProfileDataElementValue, RealmPlaygroundDict, RealmUserValidator, UnspecifiedValue, UserFieldElement, Validator, ) from zerver.lib.utils import make_safe_digest from zerver.lib.validator import ( check_date, check_int, check_list, check_long_string, check_short_string, check_url, validate_select_field, ) MAX_TOPIC_NAME_LENGTH = 60 MAX_LANGUAGE_ID_LENGTH: int = 50 STREAM_NAMES = TypeVar("STREAM_NAMES", Sequence[str], AbstractSet[str]) if TYPE_CHECKING: # We use ModelBackend only for typing. Importing it otherwise causes circular dependency. from django.contrib.auth.backends import ModelBackend class EmojiInfo(TypedDict): id: str name: str source_url: str deactivated: bool author_id: Optional[int] still_url: Optional[str] @models.Field.register_lookup class AndZero(models.Lookup[int]): lookup_name = "andz" def as_sql( self, compiler: SQLCompiler, connection: BaseDatabaseWrapper ) -> Tuple[str, List[Union[str, int]]]: # nocoverage # currently only used in migrations lhs, lhs_params = self.process_lhs(compiler, connection) rhs, rhs_params = self.process_rhs(compiler, connection) return f"{lhs} & {rhs} = 0", lhs_params + rhs_params @models.Field.register_lookup class AndNonZero(models.Lookup[int]): lookup_name = "andnz" def as_sql( self, compiler: SQLCompiler, connection: BaseDatabaseWrapper ) -> Tuple[str, List[Union[str, int]]]: # nocoverage # currently only used in migrations lhs, lhs_params = self.process_lhs(compiler, connection) rhs, rhs_params = self.process_rhs(compiler, connection) return f"{lhs} & {rhs} != 0", lhs_params + rhs_params ModelT = TypeVar("ModelT", bound=models.Model) RowT = TypeVar("RowT") def query_for_ids( query: ValuesQuerySet[ModelT, RowT], user_ids: List[int], field: str, ) -> ValuesQuerySet[ModelT, RowT]: """ This function optimizes searches of the form `user_profile_id in (1, 2, 3, 4)` by quickly building the where clauses. Profiling shows significant speedups over the normal Django-based approach. Use this very carefully! Also, the caller should guard against empty lists of user_ids. """ assert user_ids clause = f"{field} IN %s" query = query.extra( where=[clause], params=(tuple(user_ids),), ) return query # Doing 1000 remote cache requests to get_display_recipient is quite slow, # so add a local cache as well as the remote cache. # # This local cache has a lifetime of just a single request; it is # cleared inside `flush_per_request_caches` in our middleware. It # could be replaced with smarter bulk-fetching logic that deduplicates # queries for the same recipient; this is just a convenient way to # write that code. per_request_display_recipient_cache: Dict[int, DisplayRecipientT] = {} def get_display_recipient_by_id( recipient_id: int, recipient_type: int, recipient_type_id: Optional[int] ) -> DisplayRecipientT: """ returns: an object describing the recipient (using a cache). If the type is a stream, the type_id must be an int; a string is returned. Otherwise, type_id may be None; an array of recipient dicts is returned. """ # Have to import here, to avoid circular dependency. from zerver.lib.display_recipient import get_display_recipient_remote_cache if recipient_id not in per_request_display_recipient_cache: result = get_display_recipient_remote_cache(recipient_id, recipient_type, recipient_type_id) per_request_display_recipient_cache[recipient_id] = result return per_request_display_recipient_cache[recipient_id] def get_display_recipient(recipient: "Recipient") -> DisplayRecipientT: return get_display_recipient_by_id( recipient.id, recipient.type, recipient.type_id, ) def get_realm_emoji_cache_key(realm: "Realm") -> str: return f"realm_emoji:{realm.id}" def get_active_realm_emoji_cache_key(realm: "Realm") -> str: return f"active_realm_emoji:{realm.id}" # This simple call-once caching saves ~500us in auth_enabled_helper, # which is a significant optimization for common_context. Note that # these values cannot change in a running production system, but do # regularly change within unit tests; we address the latter by calling # clear_supported_auth_backends_cache in our standard tearDown code. supported_backends: Optional[List["ModelBackend"]] = None def supported_auth_backends() -> List["ModelBackend"]: global supported_backends # Caching temporarily disabled for debugging supported_backends = django.contrib.auth.get_backends() assert supported_backends is not None return supported_backends def clear_supported_auth_backends_cache() -> None: global supported_backends supported_backends = None class Realm(models.Model): # type: ignore[django-manager-missing] # django-stubs cannot resolve the custom CTEManager yet https://github.com/typeddjango/django-stubs/issues/1023 MAX_REALM_NAME_LENGTH = 40 MAX_REALM_DESCRIPTION_LENGTH = 1000 MAX_REALM_SUBDOMAIN_LENGTH = 40 MAX_REALM_REDIRECT_URL_LENGTH = 128 INVITES_STANDARD_REALM_DAILY_MAX = 3000 MESSAGE_VISIBILITY_LIMITED = 10000 AUTHENTICATION_FLAGS = [ "Google", "Email", "GitHub", "LDAP", "Dev", "RemoteUser", "AzureAD", "SAML", "GitLab", "Apple", "OpenID Connect", ] SUBDOMAIN_FOR_ROOT_DOMAIN = "" WILDCARD_MENTION_THRESHOLD = 15 # User-visible display name and description used on e.g. the organization homepage name = models.CharField(max_length=MAX_REALM_NAME_LENGTH) description = models.TextField(default="") # A short, identifier-like name for the organization. Used in subdomains; # e.g. on a server at example.com, an org with string_id `foo` is reached # at `foo.example.com`. string_id = models.CharField(max_length=MAX_REALM_SUBDOMAIN_LENGTH, unique=True) date_created = models.DateTimeField(default=timezone_now) demo_organization_scheduled_deletion_date = models.DateTimeField(default=None, null=True) deactivated = models.BooleanField(default=False) # Redirect URL if the Realm has moved to another server deactivated_redirect = models.URLField(max_length=MAX_REALM_REDIRECT_URL_LENGTH, null=True) # See RealmDomain for the domains that apply for a given organization. emails_restricted_to_domains = models.BooleanField(default=False) invite_required = models.BooleanField(default=True) _max_invites = models.IntegerField(null=True, db_column="max_invites") disallow_disposable_email_addresses = models.BooleanField(default=True) authentication_methods: BitHandler = BitField( flags=AUTHENTICATION_FLAGS, default=2**31 - 1, ) # Allow users to access web-public streams without login. This # setting also controls API access of web-public streams. enable_spectator_access = models.BooleanField(default=False) # Whether organization has given permission to be advertised in the # Zulip communities directory. want_advertise_in_communities_directory = models.BooleanField(default=False, db_index=True) # Whether the organization has enabled inline image and URL previews. inline_image_preview = models.BooleanField(default=True) inline_url_embed_preview = models.BooleanField(default=False) # Whether digest emails are enabled for the organization. digest_emails_enabled = models.BooleanField(default=False) # Day of the week on which the digest is sent (default: Tuesday). digest_weekday = models.SmallIntegerField(default=1) send_welcome_emails = models.BooleanField(default=True) message_content_allowed_in_email_notifications = models.BooleanField(default=True) mandatory_topics = models.BooleanField(default=False) name_changes_disabled = models.BooleanField(default=False) email_changes_disabled = models.BooleanField(default=False) avatar_changes_disabled = models.BooleanField(default=False) POLICY_MEMBERS_ONLY = 1 POLICY_ADMINS_ONLY = 2 POLICY_FULL_MEMBERS_ONLY = 3 POLICY_MODERATORS_ONLY = 4 POLICY_EVERYONE = 5 POLICY_NOBODY = 6 POLICY_OWNERS_ONLY = 7 COMMON_POLICY_TYPES = [ POLICY_MEMBERS_ONLY, POLICY_ADMINS_ONLY, POLICY_FULL_MEMBERS_ONLY, POLICY_MODERATORS_ONLY, ] COMMON_MESSAGE_POLICY_TYPES = [ POLICY_MEMBERS_ONLY, POLICY_ADMINS_ONLY, POLICY_FULL_MEMBERS_ONLY, POLICY_MODERATORS_ONLY, POLICY_EVERYONE, ] INVITE_TO_REALM_POLICY_TYPES = [ POLICY_MEMBERS_ONLY, POLICY_ADMINS_ONLY, POLICY_FULL_MEMBERS_ONLY, POLICY_MODERATORS_ONLY, POLICY_NOBODY, ] # We don't allow granting roles less than Moderator access to # create web-public streams, since it's a sensitive feature that # can be used to send spam. CREATE_WEB_PUBLIC_STREAM_POLICY_TYPES = [ POLICY_ADMINS_ONLY, POLICY_MODERATORS_ONLY, POLICY_OWNERS_ONLY, POLICY_NOBODY, ] DEFAULT_COMMUNITY_TOPIC_EDITING_LIMIT_SECONDS = 259200 # Who in the organization is allowed to add custom emojis. add_custom_emoji_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) # Who in the organization is allowed to create streams. create_public_stream_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) create_private_stream_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) create_web_public_stream_policy = models.PositiveSmallIntegerField(default=POLICY_OWNERS_ONLY) # Who in the organization is allowed to delete messages they themselves sent. delete_own_message_policy = models.PositiveSmallIntegerField(default=POLICY_ADMINS_ONLY) # Who in the organization is allowed to edit topics of any message. edit_topic_policy = models.PositiveSmallIntegerField(default=POLICY_EVERYONE) # Who in the organization is allowed to invite other users to organization. invite_to_realm_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) # Who in the organization is allowed to invite other users to streams. invite_to_stream_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) # Who in the organization is allowed to move messages between streams. move_messages_between_streams_policy = models.PositiveSmallIntegerField( default=POLICY_ADMINS_ONLY ) user_group_edit_policy = models.PositiveSmallIntegerField(default=POLICY_MEMBERS_ONLY) PRIVATE_MESSAGE_POLICY_UNLIMITED = 1 PRIVATE_MESSAGE_POLICY_DISABLED = 2 private_message_policy = models.PositiveSmallIntegerField( default=PRIVATE_MESSAGE_POLICY_UNLIMITED ) PRIVATE_MESSAGE_POLICY_TYPES = [ PRIVATE_MESSAGE_POLICY_UNLIMITED, PRIVATE_MESSAGE_POLICY_DISABLED, ] # Global policy for who is allowed to use wildcard mentions in # streams with a large number of subscribers. Anyone can use # wildcard mentions in small streams regardless of this setting. WILDCARD_MENTION_POLICY_EVERYONE = 1 WILDCARD_MENTION_POLICY_MEMBERS = 2 WILDCARD_MENTION_POLICY_FULL_MEMBERS = 3 WILDCARD_MENTION_POLICY_ADMINS = 5 WILDCARD_MENTION_POLICY_NOBODY = 6 WILDCARD_MENTION_POLICY_MODERATORS = 7 wildcard_mention_policy = models.PositiveSmallIntegerField( default=WILDCARD_MENTION_POLICY_ADMINS, ) WILDCARD_MENTION_POLICY_TYPES = [ WILDCARD_MENTION_POLICY_EVERYONE, WILDCARD_MENTION_POLICY_MEMBERS, WILDCARD_MENTION_POLICY_FULL_MEMBERS, WILDCARD_MENTION_POLICY_ADMINS, WILDCARD_MENTION_POLICY_NOBODY, WILDCARD_MENTION_POLICY_MODERATORS, ] # Who in the organization has access to users' actual email # addresses. Controls whether the UserProfile.email field is the # same as UserProfile.delivery_email, or is instead garbage. EMAIL_ADDRESS_VISIBILITY_EVERYONE = 1 EMAIL_ADDRESS_VISIBILITY_MEMBERS = 2 EMAIL_ADDRESS_VISIBILITY_ADMINS = 3 EMAIL_ADDRESS_VISIBILITY_NOBODY = 4 EMAIL_ADDRESS_VISIBILITY_MODERATORS = 5 email_address_visibility = models.PositiveSmallIntegerField( default=EMAIL_ADDRESS_VISIBILITY_EVERYONE, ) EMAIL_ADDRESS_VISIBILITY_TYPES = [ EMAIL_ADDRESS_VISIBILITY_EVERYONE, # The MEMBERS level is not yet implemented on the backend. ## EMAIL_ADDRESS_VISIBILITY_MEMBERS, EMAIL_ADDRESS_VISIBILITY_ADMINS, EMAIL_ADDRESS_VISIBILITY_NOBODY, EMAIL_ADDRESS_VISIBILITY_MODERATORS, ] # Threshold in days for new users to create streams, and potentially take # some other actions. waiting_period_threshold = models.PositiveIntegerField(default=0) DEFAULT_MESSAGE_CONTENT_DELETE_LIMIT_SECONDS = ( 600 # if changed, also change in admin.js, setting_org.js ) MESSAGE_CONTENT_EDIT_OR_DELETE_LIMIT_SPECIAL_VALUES_MAP = { "unlimited": None, } message_content_delete_limit_seconds = models.PositiveIntegerField( default=DEFAULT_MESSAGE_CONTENT_DELETE_LIMIT_SECONDS, null=True ) allow_message_editing = models.BooleanField(default=True) DEFAULT_MESSAGE_CONTENT_EDIT_LIMIT_SECONDS = ( 600 # if changed, also change in admin.js, setting_org.js ) message_content_edit_limit_seconds = models.PositiveIntegerField( default=DEFAULT_MESSAGE_CONTENT_EDIT_LIMIT_SECONDS, null=True ) # Whether users have access to message edit history allow_edit_history = models.BooleanField(default=True) # Defaults for new users default_language = models.CharField(default="en", max_length=MAX_LANGUAGE_ID_LENGTH) DEFAULT_NOTIFICATION_STREAM_NAME = "general" INITIAL_PRIVATE_STREAM_NAME = "core team" STREAM_EVENTS_NOTIFICATION_TOPIC = gettext_lazy("stream events") notifications_stream = models.ForeignKey( "Stream", related_name="+", null=True, blank=True, on_delete=models.SET_NULL, ) signup_notifications_stream = models.ForeignKey( "Stream", related_name="+", null=True, blank=True, on_delete=models.SET_NULL, ) MESSAGE_RETENTION_SPECIAL_VALUES_MAP = { "unlimited": -1, } # For old messages being automatically deleted message_retention_days = models.IntegerField(null=False, default=-1) # When non-null, all but the latest this many messages in the organization # are inaccessible to users (but not deleted). message_visibility_limit = models.IntegerField(null=True) # Messages older than this message ID in the organization are inaccessible. first_visible_message_id = models.IntegerField(default=0) # Valid org types ORG_TYPES: Dict[str, Dict[str, Any]] = { "unspecified": { "name": "Unspecified", "id": 0, "hidden": True, "display_order": 0, }, "business": { "name": "Business", "id": 10, "hidden": False, "display_order": 1, }, "opensource": { "name": "Open-source project", "id": 20, "hidden": False, "display_order": 2, }, "education_nonprofit": { "name": "Education (non-profit)", "id": 30, "hidden": False, "display_order": 3, }, "education": { "name": "Education (for-profit)", "id": 35, "hidden": False, "display_order": 4, }, "research": { "name": "Research", "id": 40, "hidden": False, "display_order": 5, }, "event": { "name": "Event or conference", "id": 50, "hidden": False, "display_order": 6, }, "nonprofit": { "name": "Non-profit (registered)", "id": 60, "hidden": False, "display_order": 7, }, "government": { "name": "Government", "id": 70, "hidden": False, "display_order": 8, }, "political_group": { "name": "Political group", "id": 80, "hidden": False, "display_order": 9, }, "community": { "name": "Community", "id": 90, "hidden": False, "display_order": 10, }, "personal": { "name": "Personal", "id": 100, "hidden": False, "display_order": 100, }, "other": { "name": "Other", "id": 1000, "hidden": False, "display_order": 1000, }, } org_type = models.PositiveSmallIntegerField( default=ORG_TYPES["unspecified"]["id"], choices=[(t["id"], t["name"]) for t in ORG_TYPES.values()], ) UPGRADE_TEXT_STANDARD = gettext_lazy("Available on Zulip Cloud Standard. Upgrade to access.") # plan_type controls various features around resource/feature # limitations for a Zulip organization on multi-tenant installations # like Zulip Cloud. PLAN_TYPE_SELF_HOSTED = 1 PLAN_TYPE_LIMITED = 2 PLAN_TYPE_STANDARD = 3 PLAN_TYPE_STANDARD_FREE = 4 PLAN_TYPE_PLUS = 10 plan_type = models.PositiveSmallIntegerField(default=PLAN_TYPE_SELF_HOSTED) # This value is also being used in static/js/settings_bots.bot_creation_policy_values. # On updating it here, update it there as well. BOT_CREATION_EVERYONE = 1 BOT_CREATION_LIMIT_GENERIC_BOTS = 2 BOT_CREATION_ADMINS_ONLY = 3 bot_creation_policy = models.PositiveSmallIntegerField(default=BOT_CREATION_EVERYONE) BOT_CREATION_POLICY_TYPES = [ BOT_CREATION_EVERYONE, BOT_CREATION_LIMIT_GENERIC_BOTS, BOT_CREATION_ADMINS_ONLY, ] # See upload_quota_bytes; don't interpret upload_quota_gb directly. UPLOAD_QUOTA_LIMITED = 5 UPLOAD_QUOTA_STANDARD = 50 upload_quota_gb = models.IntegerField(null=True) VIDEO_CHAT_PROVIDERS = { "disabled": { "name": "None", "id": 0, }, "jitsi_meet": { "name": "Jitsi Meet", "id": 1, }, # ID 2 was used for the now-deleted Google Hangouts. # ID 3 reserved for optional Zoom, see below. # ID 4 reserved for optional BigBlueButton, see below. } if settings.VIDEO_ZOOM_CLIENT_ID is not None and settings.VIDEO_ZOOM_CLIENT_SECRET is not None: VIDEO_CHAT_PROVIDERS["zoom"] = { "name": "Zoom", "id": 3, } if settings.BIG_BLUE_BUTTON_SECRET is not None and settings.BIG_BLUE_BUTTON_URL is not None: VIDEO_CHAT_PROVIDERS["big_blue_button"] = {"name": "BigBlueButton", "id": 4} video_chat_provider = models.PositiveSmallIntegerField( default=VIDEO_CHAT_PROVIDERS["jitsi_meet"]["id"] ) GIPHY_RATING_OPTIONS = { "disabled": { "name": "GIPHY integration disabled", "id": 0, }, # Source: https://github.com/Giphy/giphy-js/blob/master/packages/fetch-api/README.md#shared-options "y": { "name": "Allow GIFs rated Y (Very young audience)", "id": 1, }, "g": { "name": "Allow GIFs rated G (General audience)", "id": 2, }, "pg": { "name": "Allow GIFs rated PG (Parental guidance)", "id": 3, }, "pg-13": { "name": "Allow GIFs rated PG13 (Parental guidance - under 13)", "id": 4, }, "r": { "name": "Allow GIFs rated R (Restricted)", "id": 5, }, } # maximum rating of the GIFs that will be retrieved from GIPHY giphy_rating = models.PositiveSmallIntegerField(default=GIPHY_RATING_OPTIONS["g"]["id"]) default_code_block_language = models.TextField(null=True, default=None) # Whether read receipts are enabled in the organization. If disabled, # they will not be available regardless of users' personal settings. enable_read_receipts = models.BooleanField(default=False) # Define the types of the various automatically managed properties property_types: Dict[str, Union[type, Tuple[type, ...]]] = dict( add_custom_emoji_policy=int, allow_edit_history=bool, allow_message_editing=bool, avatar_changes_disabled=bool, bot_creation_policy=int, create_private_stream_policy=int, create_public_stream_policy=int, create_web_public_stream_policy=int, default_code_block_language=(str, type(None)), default_language=str, delete_own_message_policy=int, description=str, digest_emails_enabled=bool, digest_weekday=int, disallow_disposable_email_addresses=bool, edit_topic_policy=int, email_address_visibility=int, email_changes_disabled=bool, emails_restricted_to_domains=bool, enable_read_receipts=bool, enable_spectator_access=bool, giphy_rating=int, inline_image_preview=bool, inline_url_embed_preview=bool, invite_required=bool, invite_to_realm_policy=int, invite_to_stream_policy=int, mandatory_topics=bool, message_content_allowed_in_email_notifications=bool, message_content_edit_limit_seconds=(int, type(None)), message_content_delete_limit_seconds=(int, type(None)), message_retention_days=(int, type(None)), move_messages_between_streams_policy=int, name=str, name_changes_disabled=bool, private_message_policy=int, send_welcome_emails=bool, user_group_edit_policy=int, video_chat_provider=int, waiting_period_threshold=int, want_advertise_in_communities_directory=bool, wildcard_mention_policy=int, ) DIGEST_WEEKDAY_VALUES = [0, 1, 2, 3, 4, 5, 6] # Icon is the square mobile icon. ICON_FROM_GRAVATAR = "G" ICON_UPLOADED = "U" ICON_SOURCES = ( (ICON_FROM_GRAVATAR, "Hosted by Gravatar"), (ICON_UPLOADED, "Uploaded by administrator"), ) icon_source = models.CharField( default=ICON_FROM_GRAVATAR, choices=ICON_SOURCES, max_length=1, ) icon_version = models.PositiveSmallIntegerField(default=1) # Logo is the horizontal logo we show in top-left of web app navbar UI. LOGO_DEFAULT = "D" LOGO_UPLOADED = "U" LOGO_SOURCES = ( (LOGO_DEFAULT, "Default to Zulip"), (LOGO_UPLOADED, "Uploaded by administrator"), ) logo_source = models.CharField( default=LOGO_DEFAULT, choices=LOGO_SOURCES, max_length=1, ) logo_version = models.PositiveSmallIntegerField(default=1) night_logo_source = models.CharField( default=LOGO_DEFAULT, choices=LOGO_SOURCES, max_length=1, ) night_logo_version = models.PositiveSmallIntegerField(default=1) def authentication_methods_dict(self) -> Dict[str, bool]: """Returns the mapping from authentication flags to their status, showing only those authentication flags that are supported on the current server (i.e. if EmailAuthBackend is not configured on the server, this will not return an entry for "Email").""" # This mapping needs to be imported from here due to the cyclic # dependency. from zproject.backends import AUTH_BACKEND_NAME_MAP ret: Dict[str, bool] = {} supported_backends = [backend.__class__ for backend in supported_auth_backends()] # `authentication_methods` is a bitfield.types.BitHandler, not # a true dict; since it is still python2- and python3-compat, # `iteritems` is its method to iterate over its contents. for k, v in self.authentication_methods.iteritems(): backend = AUTH_BACKEND_NAME_MAP[k] if backend in supported_backends: ret[k] = v return ret def __str__(self) -> str: return f"" # `realm` instead of `self` here to make sure the parameters of the cache key # function matches the original method. @cache_with_key(get_realm_emoji_cache_key, timeout=3600 * 24 * 7) def get_emoji(realm) -> Dict[str, EmojiInfo]: return get_realm_emoji_uncached(realm) @cache_with_key(get_active_realm_emoji_cache_key, timeout=3600 * 24 * 7) def get_active_emoji(realm) -> Dict[str, EmojiInfo]: return get_active_realm_emoji_uncached(realm) def get_admin_users_and_bots( self, include_realm_owners: bool = True ) -> QuerySet["UserProfile"]: """Use this in contexts where we want administrative users as well as bots with administrator privileges, like send_event calls for notifications to all administrator users. """ if include_realm_owners: roles = [UserProfile.ROLE_REALM_ADMINISTRATOR, UserProfile.ROLE_REALM_OWNER] else: roles = [UserProfile.ROLE_REALM_ADMINISTRATOR] return UserProfile.objects.filter( realm=self, is_active=True, role__in=roles, ) def get_human_admin_users(self, include_realm_owners: bool = True) -> QuerySet["UserProfile"]: """Use this in contexts where we want only human users with administrative privileges, like sending an email to all of a realm's administrators (bots don't have real email addresses). """ if include_realm_owners: roles = [UserProfile.ROLE_REALM_ADMINISTRATOR, UserProfile.ROLE_REALM_OWNER] else: roles = [UserProfile.ROLE_REALM_ADMINISTRATOR] return UserProfile.objects.filter( realm=self, is_bot=False, is_active=True, role__in=roles, ) def get_human_billing_admin_and_realm_owner_users(self) -> QuerySet["UserProfile"]: return UserProfile.objects.filter( Q(role=UserProfile.ROLE_REALM_OWNER) | Q(is_billing_admin=True), realm=self, is_bot=False, is_active=True, ) def get_active_users(self) -> QuerySet["UserProfile"]: return UserProfile.objects.filter(realm=self, is_active=True).select_related() def get_first_human_user(self) -> Optional["UserProfile"]: """A useful value for communications with newly created realms. Has a few fundamental limitations: * Its value will be effectively random for realms imported from Slack or other third-party tools. * The user may be deactivated, etc., so it's not something that's useful for features, permissions, etc. """ return UserProfile.objects.filter(realm=self, is_bot=False).order_by("id").first() def get_human_owner_users(self) -> QuerySet["UserProfile"]: return UserProfile.objects.filter( realm=self, is_bot=False, role=UserProfile.ROLE_REALM_OWNER, is_active=True ) def get_bot_domain(self) -> str: return get_fake_email_domain(self) def get_notifications_stream(self) -> Optional["Stream"]: if self.notifications_stream is not None and not self.notifications_stream.deactivated: return self.notifications_stream return None def get_signup_notifications_stream(self) -> Optional["Stream"]: if ( self.signup_notifications_stream is not None and not self.signup_notifications_stream.deactivated ): return self.signup_notifications_stream return None @property def max_invites(self) -> int: if self._max_invites is None: return settings.INVITES_DEFAULT_REALM_DAILY_MAX return self._max_invites @max_invites.setter def max_invites(self, value: Optional[int]) -> None: self._max_invites = value def upload_quota_bytes(self) -> Optional[int]: if self.upload_quota_gb is None: return None # We describe the quota to users in "GB" or "gigabytes", but actually apply # it as gibibytes (GiB) to be a bit more generous in case of confusion. return self.upload_quota_gb << 30 # `realm` instead of `self` here to make sure the parameters of the cache key # function matches the original method. @cache_with_key(get_realm_used_upload_space_cache_key, timeout=3600 * 24 * 7) def currently_used_upload_space_bytes(realm) -> int: used_space = Attachment.objects.filter(realm=realm).aggregate(Sum("size"))["size__sum"] if used_space is None: return 0 return used_space def ensure_not_on_limited_plan(self) -> None: if self.plan_type == Realm.PLAN_TYPE_LIMITED: raise JsonableError(str(self.UPGRADE_TEXT_STANDARD)) @property def subdomain(self) -> str: return self.string_id @property def display_subdomain(self) -> str: """Likely to be temporary function to avoid signup messages being sent to an empty topic""" if self.string_id == "": return "." return self.string_id @property def uri(self) -> str: return settings.EXTERNAL_URI_SCHEME + self.host @property def host(self) -> str: # Use mark sanitized to prevent false positives from Pysa thinking that # the host is user controlled. return mark_sanitized(self.host_for_subdomain(self.subdomain)) @staticmethod def host_for_subdomain(subdomain: str) -> str: if subdomain == Realm.SUBDOMAIN_FOR_ROOT_DOMAIN: return settings.EXTERNAL_HOST default_host = f"{subdomain}.{settings.EXTERNAL_HOST}" return settings.REALM_HOSTS.get(subdomain, default_host) @property def is_zephyr_mirror_realm(self) -> bool: return self.string_id == "zephyr" @property def webathena_enabled(self) -> bool: return self.is_zephyr_mirror_realm @property def presence_disabled(self) -> bool: return self.is_zephyr_mirror_realm def web_public_streams_enabled(self) -> bool: if not settings.WEB_PUBLIC_STREAMS_ENABLED: # To help protect against accidentally web-public streams in # self-hosted servers, we require the feature to be enabled at # the server level before it is available to users. return False if self.plan_type == Realm.PLAN_TYPE_LIMITED: # In Zulip Cloud, we also require a paid or sponsored # plan, to protect against the spam/abuse attacks that # target every open Internet service that can host files. return False if not self.enable_spectator_access: return False return True def has_web_public_streams(self) -> bool: if not self.web_public_streams_enabled(): return False from zerver.lib.streams import get_web_public_streams_queryset return get_web_public_streams_queryset(self).exists() def allow_web_public_streams_access(self) -> bool: """ If any of the streams in the realm is web public and `enable_spectator_access` and settings.WEB_PUBLIC_STREAMS_ENABLED is True, then the Realm is web-public. """ return self.has_web_public_streams() post_save.connect(flush_realm, sender=Realm) # We register realm cache flushing in a duplicate way to be run both # pre_delete and post_delete on purpose: # 1. pre_delete is needed because flush_realm wants to flush the UserProfile caches, # and UserProfile objects are deleted via on_delete=CASCADE before the post_delete handler # is called, which results in the `flush_realm` logic not having access to the details # for the deleted users if called at that time. # 2. post_delete is run as a precaution to reduce the risk of races where items might be # added to the cache after the pre_delete handler but before the save. # Note that it does not eliminate this risk, not least because it only flushes # the realm cache, and not the user caches, for the reasons explained above. def realm_pre_and_post_delete_handler(*, instance: Realm, **kwargs: object) -> None: # This would be better as a functools.partial, but for some reason # Django doesn't call it even when it's registered as a post_delete handler. flush_realm(instance=instance, from_deletion=True) pre_delete.connect(realm_pre_and_post_delete_handler, sender=Realm) post_delete.connect(realm_pre_and_post_delete_handler, sender=Realm) def get_realm(string_id: str) -> Realm: return Realm.objects.get(string_id=string_id) def get_realm_by_id(realm_id: int) -> Realm: return Realm.objects.get(id=realm_id) def name_changes_disabled(realm: Optional[Realm]) -> bool: if realm is None: return settings.NAME_CHANGES_DISABLED return settings.NAME_CHANGES_DISABLED or realm.name_changes_disabled def avatar_changes_disabled(realm: Realm) -> bool: return settings.AVATAR_CHANGES_DISABLED or realm.avatar_changes_disabled def get_org_type_display_name(org_type: int) -> str: for realm_type, realm_type_details in Realm.ORG_TYPES.items(): if realm_type_details["id"] == org_type: return realm_type_details["name"] return "" class RealmDomain(models.Model): """For an organization with emails_restricted_to_domains enabled, the list of allowed domains""" realm = models.ForeignKey(Realm, on_delete=CASCADE) # should always be stored lowercase domain = models.CharField(max_length=80, db_index=True) allow_subdomains = models.BooleanField(default=False) class Meta: unique_together = ("realm", "domain") class DomainNotAllowedForRealmError(Exception): pass class DisposableEmailError(Exception): pass class EmailContainsPlusError(Exception): pass class RealmDomainDict(TypedDict): domain: str allow_subdomains: bool def get_realm_domains(realm: Realm) -> List[RealmDomainDict]: return list(realm.realmdomain_set.values("domain", "allow_subdomains")) class RealmEmoji(models.Model): author = models.ForeignKey( "UserProfile", blank=True, null=True, on_delete=CASCADE, ) realm = models.ForeignKey(Realm, on_delete=CASCADE) name = models.TextField( validators=[ MinLengthValidator(1), # The second part of the regex (negative lookbehind) disallows names # ending with one of the punctuation characters. RegexValidator( regex=r"^[0-9a-z.\-_]+(? str: return f"" class Meta: constraints = [ models.UniqueConstraint( fields=["realm", "name"], condition=Q(deactivated=False), name="unique_realm_emoji_when_false_deactivated", ), ] def get_realm_emoji_dicts(realm: Realm, only_active_emojis: bool = False) -> Dict[str, EmojiInfo]: # RealmEmoji objects with file_name=None are still in the process # of being uploaded, and we expect to be cleaned up by a # try/finally block if the upload fails, so it's correct to # exclude them. query = ( RealmEmoji.objects.filter(realm=realm) .exclude( file_name=None, ) .select_related("author") ) if only_active_emojis: query = query.filter(deactivated=False) d = {} from zerver.lib.emoji import get_emoji_url for realm_emoji in query.all(): author_id = None if realm_emoji.author: author_id = realm_emoji.author_id assert realm_emoji.file_name is not None emoji_url = get_emoji_url(realm_emoji.file_name, realm_emoji.realm_id) emoji_dict: EmojiInfo = dict( id=str(realm_emoji.id), name=realm_emoji.name, source_url=emoji_url, deactivated=realm_emoji.deactivated, author_id=author_id, still_url=None, ) if realm_emoji.is_animated: # For animated emoji, we include still_url with a static # version of the image, so that clients can display the # emoji in a less distracting (not animated) fashion when # desired. emoji_dict["still_url"] = get_emoji_url( realm_emoji.file_name, realm_emoji.realm_id, still=True ) d[str(realm_emoji.id)] = emoji_dict return d def get_realm_emoji_uncached(realm: Realm) -> Dict[str, EmojiInfo]: return get_realm_emoji_dicts(realm) def get_active_realm_emoji_uncached(realm: Realm) -> Dict[str, EmojiInfo]: realm_emojis = get_realm_emoji_dicts(realm, only_active_emojis=True) d = {} for emoji_id, emoji_dict in realm_emojis.items(): d[emoji_dict["name"]] = emoji_dict return d def flush_realm_emoji(*, instance: RealmEmoji, **kwargs: object) -> None: if instance.file_name is None: # Because we construct RealmEmoji.file_name using the ID for # the RealmEmoji object, it will always have file_name=None, # and then it'll be updated with the actual filename as soon # as the upload completes successfully. # # Doing nothing when file_name=None is the best option, since # such an object shouldn't have been cached yet, and this # function will be called again when file_name is set. return realm = instance.realm cache_set( get_realm_emoji_cache_key(realm), get_realm_emoji_uncached(realm), timeout=3600 * 24 * 7 ) cache_set( get_active_realm_emoji_cache_key(realm), get_active_realm_emoji_uncached(realm), timeout=3600 * 24 * 7, ) post_save.connect(flush_realm_emoji, sender=RealmEmoji) post_delete.connect(flush_realm_emoji, sender=RealmEmoji) def filter_pattern_validator(value: str) -> Pattern[str]: try: # Do not write errors to stderr (this still raises exceptions) options = re2.Options() options.log_errors = False regex = re2.compile(value, options=options) except re2.error as e: if len(e.args) >= 1: if isinstance(e.args[0], str): # nocoverage raise ValidationError(_("Bad regular expression: {}").format(e.args[0])) if isinstance(e.args[0], bytes): raise ValidationError(_("Bad regular expression: {}").format(e.args[0].decode())) raise ValidationError(_("Unknown regular expression error")) # nocoverage return regex def filter_format_validator(value: str) -> None: """Verifies URL-ness, and then %(foo)s. URLValidator is assumed to catch anything which is malformed as a URL; the regex then verifies the format-string pieces. """ URLValidator()(value) regex = re.compile( r""" ^ ( [^%] # Any non-percent, | # OR... % ( # A %, which can mean: \( [a-zA-Z0-9_-]+ \) s # Interpolation group | # OR % # %%, which is an escaped % | # OR [0-9a-fA-F][0-9a-fA-F] # URL percent-encoded bytes, which we # special-case in markdown translation ) )+ # Those happen one or more times $ """, re.VERBOSE, ) if not regex.match(value): raise ValidationError(_("Invalid format string in URL.")) class RealmFilter(models.Model): """Realm-specific regular expressions to automatically linkify certain strings inside the Markdown processor. See "Custom filters" in the settings UI. """ realm = models.ForeignKey(Realm, on_delete=CASCADE) pattern = models.TextField() url_format_string = models.TextField(validators=[filter_format_validator]) class Meta: unique_together = ("realm", "pattern") def clean(self) -> None: """Validate whether the set of parameters in the URL Format string match the set of parameters in the regular expression. Django's `full_clean` calls `clean_fields` followed by `clean` method and stores all ValidationErrors from all stages to return as JSON. """ # Extract variables present in the pattern pattern = filter_pattern_validator(self.pattern) group_set = set(pattern.groupindex.keys()) # Extract variables used in the URL format string. Note that # this regex will incorrectly reject patterns that attempt to # escape % using %%. found_group_set: Set[str] = set() group_match_regex = r"(?[^()]+)\)s" for m in re.finditer(group_match_regex, self.url_format_string): group_name = m.group("group_name") found_group_set.add(group_name) # Report patterns missing in linkifier pattern. missing_in_pattern_set = found_group_set - group_set if len(missing_in_pattern_set) > 0: name = list(sorted(missing_in_pattern_set))[0] raise ValidationError( _("Group %(name)r in URL format string is not present in linkifier pattern."), params={"name": name}, ) missing_in_url_set = group_set - found_group_set # Report patterns missing in URL format string. if len(missing_in_url_set) > 0: # We just report the first missing pattern here. Users can # incrementally resolve errors if there are multiple # missing patterns. name = list(sorted(missing_in_url_set))[0] raise ValidationError( _("Group %(name)r in linkifier pattern is not present in URL format string."), params={"name": name}, ) def __str__(self) -> str: return f"" def get_linkifiers_cache_key(realm_id: int) -> str: return f"{cache.KEY_PREFIX}:all_linkifiers_for_realm:{realm_id}" # We have a per-process cache to avoid doing 1000 remote cache queries during page load per_request_linkifiers_cache: Dict[int, List[LinkifierDict]] = {} def realm_in_local_linkifiers_cache(realm_id: int) -> bool: return realm_id in per_request_linkifiers_cache def linkifiers_for_realm(realm_id: int) -> List[LinkifierDict]: if not realm_in_local_linkifiers_cache(realm_id): per_request_linkifiers_cache[realm_id] = linkifiers_for_realm_remote_cache(realm_id) return per_request_linkifiers_cache[realm_id] def realm_filters_for_realm(realm_id: int) -> List[Tuple[str, str, int]]: """ Processes data from `linkifiers_for_realm` to return to older clients, which use the `realm_filters` events. """ linkifiers = linkifiers_for_realm(realm_id) realm_filters: List[Tuple[str, str, int]] = [] for linkifier in linkifiers: realm_filters.append((linkifier["pattern"], linkifier["url_format"], linkifier["id"])) return realm_filters @cache_with_key(get_linkifiers_cache_key, timeout=3600 * 24 * 7) def linkifiers_for_realm_remote_cache(realm_id: int) -> List[LinkifierDict]: linkifiers = [] for linkifier in RealmFilter.objects.filter(realm_id=realm_id): linkifiers.append( LinkifierDict( pattern=linkifier.pattern, url_format=linkifier.url_format_string, id=linkifier.id, ) ) return linkifiers def flush_linkifiers(*, instance: RealmFilter, **kwargs: object) -> None: realm_id = instance.realm_id cache_delete(get_linkifiers_cache_key(realm_id)) try: per_request_linkifiers_cache.pop(realm_id) except KeyError: pass post_save.connect(flush_linkifiers, sender=RealmFilter) post_delete.connect(flush_linkifiers, sender=RealmFilter) def flush_per_request_caches() -> None: global per_request_display_recipient_cache per_request_display_recipient_cache = {} global per_request_linkifiers_cache per_request_linkifiers_cache = {} class RealmPlayground(models.Model): """Server side storage model to store playground information needed by our 'view code in playground' feature in code blocks. """ MAX_PYGMENTS_LANGUAGE_LENGTH = 40 realm = models.ForeignKey(Realm, on_delete=CASCADE) url_prefix = models.TextField(validators=[URLValidator()]) # User-visible display name used when configuring playgrounds in the settings page and # when displaying them in the playground links popover. name = models.TextField(db_index=True) # This stores the pygments lexer subclass names and not the aliases themselves. pygments_language = models.CharField( db_index=True, max_length=MAX_PYGMENTS_LANGUAGE_LENGTH, # We validate to see if this conforms to the character set allowed for a # language in the code block. validators=[ RegexValidator( regex=r"^[ a-zA-Z0-9_+-./#]*$", message=_("Invalid characters in pygments language") ) ], ) class Meta: unique_together = (("realm", "pygments_language", "name"),) def __str__(self) -> str: return f"" def get_realm_playgrounds(realm: Realm) -> List[RealmPlaygroundDict]: playgrounds: List[RealmPlaygroundDict] = [] for playground in RealmPlayground.objects.filter(realm=realm).all(): playgrounds.append( RealmPlaygroundDict( id=playground.id, name=playground.name, pygments_language=playground.pygments_language, url_prefix=playground.url_prefix, ) ) return playgrounds class Recipient(models.Model): """Represents an audience that can potentially receive messages in Zulip. This table essentially functions as a generic foreign key that allows Message.recipient_id to be a simple ForeignKey representing the audience for a message, while supporting the different types of audiences Zulip supports for a message. Recipient has just two attributes: The enum type, and a type_id, which is the ID of the UserProfile/Stream/Huddle object containing all the metadata for the audience. There are 3 recipient types: 1. 1:1 private message: The type_id is the ID of the UserProfile who will receive any message to this Recipient. The sender of such a message is represented separately. 2. Stream message: The type_id is the ID of the associated Stream. 3. Group private message: In Zulip, group private messages are represented by Huddle objects, which encode the set of users in the conversation. The type_id is the ID of the associated Huddle object; the set of users is usually retrieved via the Subscription table. See the Huddle model for details. See also the Subscription model, which stores which UserProfile objects are subscribed to which Recipient objects. """ type_id = models.IntegerField(db_index=True) type = models.PositiveSmallIntegerField(db_index=True) # Valid types are {personal, stream, huddle} # The type for 1:1 private messages. PERSONAL = 1 # The type for stream messages. STREAM = 2 # The type group private messages. HUDDLE = 3 class Meta: unique_together = ("type", "type_id") # N.B. If we used Django's choice=... we would get this for free (kinda) _type_names = {PERSONAL: "personal", STREAM: "stream", HUDDLE: "huddle"} def type_name(self) -> str: # Raises KeyError if invalid return self._type_names[self.type] def __str__(self) -> str: display_recipient = get_display_recipient(self) return f"" class UserBaseSettings(models.Model): """This abstract class is the container for all preferences/personal settings for users that control the behavior of the application. It was extracted from UserProfile to support the RealmUserDefault model (i.e. allow individual realms to configure the default values of these preferences for new users in their organization). Changing the default value for a field declared here likely requires a migration to update all RealmUserDefault rows that had the old default value to have the new default value. Otherwise, the default change will only affect new users joining Realms created after the change. """ # UI settings enter_sends = models.BooleanField(default=False) # display settings left_side_userlist = models.BooleanField(default=False) default_language = models.CharField(default="en", max_length=MAX_LANGUAGE_ID_LENGTH) # This setting controls which view is rendered first when Zulip loads. # Values for it are URL suffix after `#`. default_view = models.TextField(default="recent_topics") escape_navigates_to_default_view = models.BooleanField(default=True) dense_mode = models.BooleanField(default=True) fluid_layout_width = models.BooleanField(default=False) high_contrast_mode = models.BooleanField(default=False) translate_emoticons = models.BooleanField(default=False) display_emoji_reaction_users = models.BooleanField(default=True) twenty_four_hour_time = models.BooleanField(default=False) starred_message_counts = models.BooleanField(default=True) COLOR_SCHEME_AUTOMATIC = 1 COLOR_SCHEME_NIGHT = 2 COLOR_SCHEME_LIGHT = 3 COLOR_SCHEME_CHOICES = [COLOR_SCHEME_AUTOMATIC, COLOR_SCHEME_NIGHT, COLOR_SCHEME_LIGHT] color_scheme = models.PositiveSmallIntegerField(default=COLOR_SCHEME_AUTOMATIC) # UI setting controlling Zulip's behavior of demoting in the sort # order and graying out streams with no recent traffic. The # default behavior, automatic, enables this behavior once a user # is subscribed to 30+ streams in the web app. DEMOTE_STREAMS_AUTOMATIC = 1 DEMOTE_STREAMS_ALWAYS = 2 DEMOTE_STREAMS_NEVER = 3 DEMOTE_STREAMS_CHOICES = [ DEMOTE_STREAMS_AUTOMATIC, DEMOTE_STREAMS_ALWAYS, DEMOTE_STREAMS_NEVER, ] demote_inactive_streams = models.PositiveSmallIntegerField(default=DEMOTE_STREAMS_AUTOMATIC) # Emoji sets GOOGLE_EMOJISET = "google" GOOGLE_BLOB_EMOJISET = "google-blob" TEXT_EMOJISET = "text" TWITTER_EMOJISET = "twitter" EMOJISET_CHOICES = ( (GOOGLE_EMOJISET, "Google"), (TWITTER_EMOJISET, "Twitter"), (TEXT_EMOJISET, "Plain text"), (GOOGLE_BLOB_EMOJISET, "Google blobs"), ) emojiset = models.CharField(default=GOOGLE_EMOJISET, choices=EMOJISET_CHOICES, max_length=20) # User list style USER_LIST_STYLE_COMPACT = 1 USER_LIST_STYLE_WITH_STATUS = 2 USER_LIST_STYLE_WITH_AVATAR = 3 USER_LIST_STYLE_CHOICES = [ USER_LIST_STYLE_COMPACT, USER_LIST_STYLE_WITH_STATUS, USER_LIST_STYLE_WITH_AVATAR, ] user_list_style = models.PositiveSmallIntegerField(default=USER_LIST_STYLE_WITH_STATUS) ### Notifications settings. ### email_notifications_batching_period_seconds = models.IntegerField(default=120) # Stream notifications. enable_stream_desktop_notifications = models.BooleanField(default=False) enable_stream_email_notifications = models.BooleanField(default=False) enable_stream_push_notifications = models.BooleanField(default=False) enable_stream_audible_notifications = models.BooleanField(default=False) notification_sound = models.CharField(max_length=20, default="zulip") wildcard_mentions_notify = models.BooleanField(default=True) # PM + @-mention notifications. enable_desktop_notifications = models.BooleanField(default=True) pm_content_in_desktop_notifications = models.BooleanField(default=True) enable_sounds = models.BooleanField(default=True) enable_offline_email_notifications = models.BooleanField(default=True) message_content_in_email_notifications = models.BooleanField(default=True) enable_offline_push_notifications = models.BooleanField(default=True) enable_online_push_notifications = models.BooleanField(default=True) DESKTOP_ICON_COUNT_DISPLAY_MESSAGES = 1 DESKTOP_ICON_COUNT_DISPLAY_NOTIFIABLE = 2 DESKTOP_ICON_COUNT_DISPLAY_NONE = 3 DESKTOP_ICON_COUNT_DISPLAY_CHOICES = [ DESKTOP_ICON_COUNT_DISPLAY_MESSAGES, DESKTOP_ICON_COUNT_DISPLAY_NOTIFIABLE, DESKTOP_ICON_COUNT_DISPLAY_NONE, ] desktop_icon_count_display = models.PositiveSmallIntegerField( default=DESKTOP_ICON_COUNT_DISPLAY_MESSAGES ) enable_digest_emails = models.BooleanField(default=True) enable_login_emails = models.BooleanField(default=True) enable_marketing_emails = models.BooleanField(default=True) realm_name_in_notifications = models.BooleanField(default=False) presence_enabled = models.BooleanField(default=True) # Whether or not the user wants to sync their drafts. enable_drafts_synchronization = models.BooleanField(default=True) # Privacy settings send_stream_typing_notifications = models.BooleanField(default=True) send_private_typing_notifications = models.BooleanField(default=True) send_read_receipts = models.BooleanField(default=True) display_settings_legacy = dict( # Don't add anything new to this legacy dict. # Instead, see `modern_settings` below. color_scheme=int, default_language=str, default_view=str, demote_inactive_streams=int, dense_mode=bool, emojiset=str, enable_drafts_synchronization=bool, enter_sends=bool, fluid_layout_width=bool, high_contrast_mode=bool, left_side_userlist=bool, starred_message_counts=bool, translate_emoticons=bool, twenty_four_hour_time=bool, ) notification_settings_legacy = dict( # Don't add anything new to this legacy dict. # Instead, see `modern_notification_settings` below. desktop_icon_count_display=int, email_notifications_batching_period_seconds=int, enable_desktop_notifications=bool, enable_digest_emails=bool, enable_login_emails=bool, enable_marketing_emails=bool, enable_offline_email_notifications=bool, enable_offline_push_notifications=bool, enable_online_push_notifications=bool, enable_sounds=bool, enable_stream_audible_notifications=bool, enable_stream_desktop_notifications=bool, enable_stream_email_notifications=bool, enable_stream_push_notifications=bool, message_content_in_email_notifications=bool, notification_sound=str, pm_content_in_desktop_notifications=bool, presence_enabled=bool, realm_name_in_notifications=bool, wildcard_mentions_notify=bool, ) modern_settings = dict( # Add new general settings here. display_emoji_reaction_users=bool, escape_navigates_to_default_view=bool, send_private_typing_notifications=bool, send_read_receipts=bool, send_stream_typing_notifications=bool, user_list_style=int, ) modern_notification_settings: Dict[str, Any] = dict( # Add new notification settings here. ) notification_setting_types = { **notification_settings_legacy, **modern_notification_settings, } # Define the types of the various automatically managed properties property_types = { **display_settings_legacy, **notification_setting_types, **modern_settings, } class Meta: abstract = True @staticmethod def emojiset_choices() -> List[Dict[str, str]]: return [ dict(key=emojiset[0], text=emojiset[1]) for emojiset in UserProfile.EMOJISET_CHOICES ] class RealmUserDefault(UserBaseSettings): """This table stores realm-level default values for user preferences like notification settings, used when creating a new user account. """ realm = models.OneToOneField(Realm, on_delete=CASCADE) class UserProfile(AbstractBaseUser, PermissionsMixin, UserBaseSettings): # type: ignore[django-manager-missing] # django-stubs cannot resolve the custom CTEManager yet https://github.com/typeddjango/django-stubs/issues/1023 USERNAME_FIELD = "email" MAX_NAME_LENGTH = 100 MIN_NAME_LENGTH = 2 API_KEY_LENGTH = 32 NAME_INVALID_CHARS = ["*", "`", "\\", ">", '"', "@"] DEFAULT_BOT = 1 """ Incoming webhook bots are limited to only sending messages via webhooks. Thus, it is less of a security risk to expose their API keys to third-party services, since they can't be used to read messages. """ INCOMING_WEBHOOK_BOT = 2 # This value is also being used in static/js/settings_bots.js. # On updating it here, update it there as well. OUTGOING_WEBHOOK_BOT = 3 """ Embedded bots run within the Zulip server itself; events are added to the embedded_bots queue and then handled by a QueueProcessingWorker. """ EMBEDDED_BOT = 4 BOT_TYPES = { DEFAULT_BOT: "Generic bot", INCOMING_WEBHOOK_BOT: "Incoming webhook", OUTGOING_WEBHOOK_BOT: "Outgoing webhook", EMBEDDED_BOT: "Embedded bot", } SERVICE_BOT_TYPES = [ OUTGOING_WEBHOOK_BOT, EMBEDDED_BOT, ] # For historical reasons, Zulip has two email fields. The # `delivery_email` field is the user's email address, where all # email notifications will be sent, and is used for all # authentication use cases. # # The `email` field is the same as delivery_email in organizations # with EMAIL_ADDRESS_VISIBILITY_EVERYONE. For other # organizations, it will be a unique value of the form # user1234@example.com. This field exists for backwards # compatibility in Zulip APIs where users are referred to by their # email address, not their ID; it should be used in all API use cases. # # Both fields are unique within a realm (in a case-insensitive # fashion). Since Django's unique_together is case sensitive, this # is enforced via SQL indexes created by # zerver/migrations/0295_case_insensitive_email_indexes.py. delivery_email = models.EmailField(blank=False, db_index=True) email = models.EmailField(blank=False, db_index=True) realm = models.ForeignKey(Realm, on_delete=CASCADE) # Foreign key to the Recipient object for PERSONAL type messages to this user. recipient = models.ForeignKey(Recipient, null=True, on_delete=models.SET_NULL) # The user's name. We prefer the model of a full_name # over first+last because cultures vary on how many # names one has, whether the family name is first or last, etc. # It also allows organizations to encode a bit of non-name data in # the "name" attribute if desired, like gender pronouns, # graduation year, etc. full_name = models.CharField(max_length=MAX_NAME_LENGTH) date_joined = models.DateTimeField(default=timezone_now) tos_version = models.CharField(null=True, max_length=10) api_key = models.CharField(max_length=API_KEY_LENGTH) # A UUID generated on user creation. Introduced primarily to # provide a unique key for a user for the mobile push # notifications bouncer that will not have collisions after doing # a data export and then import. uuid = models.UUIDField(default=uuid4, unique=True) # Whether the user has access to server-level administrator pages, like /activity is_staff = models.BooleanField(default=False) # For a normal user, this is True unless the user or an admin has # deactivated their account. The name comes from Django; this field # isn't related to presence or to whether the user has recently used Zulip. # # See also `long_term_idle`. is_active = models.BooleanField(default=True, db_index=True) is_billing_admin = models.BooleanField(default=False, db_index=True) is_bot = models.BooleanField(default=False, db_index=True) bot_type = models.PositiveSmallIntegerField(null=True, db_index=True) bot_owner = models.ForeignKey("self", null=True, on_delete=models.SET_NULL) # Each role has a superset of the permissions of the next higher # numbered role. When adding new roles, leave enough space for # future roles to be inserted between currently adjacent # roles. These constants appear in RealmAuditLog.extra_data, so # changes to them will require a migration of RealmAuditLog. ROLE_REALM_OWNER = 100 ROLE_REALM_ADMINISTRATOR = 200 ROLE_MODERATOR = 300 ROLE_MEMBER = 400 ROLE_GUEST = 600 role = models.PositiveSmallIntegerField(default=ROLE_MEMBER, db_index=True) ROLE_TYPES = [ ROLE_REALM_OWNER, ROLE_REALM_ADMINISTRATOR, ROLE_MODERATOR, ROLE_MEMBER, ROLE_GUEST, ] # Whether the user has been "soft-deactivated" due to weeks of inactivity. # For these users we avoid doing UserMessage table work, as an optimization # for large Zulip organizations with lots of single-visit users. long_term_idle = models.BooleanField(default=False, db_index=True) # When we last added basic UserMessage rows for a long_term_idle user. last_active_message_id = models.IntegerField(null=True) # Mirror dummies are fake (!is_active) users used to provide # message senders in our cross-protocol Zephyr<->Zulip content # mirroring integration, so that we can display mirrored content # like native Zulip messages (with a name + avatar, etc.). is_mirror_dummy = models.BooleanField(default=False) # Users with this flag set are allowed to forge messages as sent by another # user and to send to private streams; also used for Zephyr/Jabber mirroring. can_forge_sender = models.BooleanField(default=False, db_index=True) # Users with this flag set can create other users via API. can_create_users = models.BooleanField(default=False, db_index=True) # Used for rate-limiting certain automated messages generated by bots last_reminder = models.DateTimeField(default=None, null=True) # Minutes to wait before warning a bot owner that their bot sent a message # to a nonexistent stream BOT_OWNER_STREAM_ALERT_WAITPERIOD = 1 # API rate limits, formatted as a comma-separated list of range:max pairs rate_limits = models.CharField(default="", max_length=100) # Default streams for some deprecated/legacy classes of bot users. default_sending_stream = models.ForeignKey( "zerver.Stream", null=True, related_name="+", on_delete=models.SET_NULL, ) default_events_register_stream = models.ForeignKey( "zerver.Stream", null=True, related_name="+", on_delete=models.SET_NULL, ) default_all_public_streams = models.BooleanField(default=False) # A time zone name from the `tzdata` database, as found in zoneinfo.available_timezones(). # # The longest existing name is 32 characters long, so max_length=40 seems # like a safe choice. # # In Django, the convention is to use an empty string instead of NULL/None # for text-based fields. For more information, see # https://docs.djangoproject.com/en/3.2/ref/models/fields/#django.db.models.Field.null. timezone = models.CharField(max_length=40, default="") AVATAR_FROM_GRAVATAR = "G" AVATAR_FROM_USER = "U" AVATAR_SOURCES = ( (AVATAR_FROM_GRAVATAR, "Hosted by Gravatar"), (AVATAR_FROM_USER, "Uploaded by user"), ) avatar_source = models.CharField( default=AVATAR_FROM_GRAVATAR, choices=AVATAR_SOURCES, max_length=1 ) avatar_version = models.PositiveSmallIntegerField(default=1) avatar_hash = models.CharField(null=True, max_length=64) TUTORIAL_WAITING = "W" TUTORIAL_STARTED = "S" TUTORIAL_FINISHED = "F" TUTORIAL_STATES = ( (TUTORIAL_WAITING, "Waiting"), (TUTORIAL_STARTED, "Started"), (TUTORIAL_FINISHED, "Finished"), ) tutorial_status = models.CharField( default=TUTORIAL_WAITING, choices=TUTORIAL_STATES, max_length=1 ) # Contains serialized JSON of the form: # [("step 1", true), ("step 2", false)] # where the second element of each tuple is if the step has been # completed. onboarding_steps = models.TextField(default="[]") zoom_token = models.JSONField(default=None, null=True) objects = UserManager() ROLE_ID_TO_NAME_MAP = { ROLE_REALM_OWNER: gettext_lazy("Organization owner"), ROLE_REALM_ADMINISTRATOR: gettext_lazy("Organization administrator"), ROLE_MODERATOR: gettext_lazy("Moderator"), ROLE_MEMBER: gettext_lazy("Member"), ROLE_GUEST: gettext_lazy("Guest"), } def get_role_name(self) -> str: return str(self.ROLE_ID_TO_NAME_MAP[self.role]) def profile_data(self) -> ProfileData: values = CustomProfileFieldValue.objects.filter(user_profile=self) user_data = { v.field_id: {"value": v.value, "rendered_value": v.rendered_value} for v in values } data: ProfileData = [] for field in custom_profile_fields_for_realm(self.realm_id): field_values = user_data.get(field.id, None) if field_values: value, rendered_value = field_values.get("value"), field_values.get( "rendered_value" ) else: value, rendered_value = None, None field_type = field.field_type if value is not None: converter = field.FIELD_CONVERTERS[field_type] value = converter(value) field_data = field.as_dict() data.append( { "id": field_data["id"], "name": field_data["name"], "type": field_data["type"], "hint": field_data["hint"], "field_data": field_data["field_data"], "order": field_data["order"], "value": value, "rendered_value": rendered_value, } ) return data def can_admin_user(self, target_user: "UserProfile") -> bool: """Returns whether this user has permission to modify target_user""" if target_user.bot_owner == self: return True elif self.is_realm_admin and self.realm == target_user.realm: return True else: return False def __str__(self) -> str: return f"" @property def is_provisional_member(self) -> bool: if self.is_moderator: return False diff = (timezone_now() - self.date_joined).days if diff < self.realm.waiting_period_threshold: return True return False @property def is_realm_admin(self) -> bool: return ( self.role == UserProfile.ROLE_REALM_ADMINISTRATOR or self.role == UserProfile.ROLE_REALM_OWNER ) @is_realm_admin.setter def is_realm_admin(self, value: bool) -> None: if value: self.role = UserProfile.ROLE_REALM_ADMINISTRATOR elif self.role == UserProfile.ROLE_REALM_ADMINISTRATOR: # We need to be careful to not accidentally change # ROLE_GUEST to ROLE_MEMBER here. self.role = UserProfile.ROLE_MEMBER @property def has_billing_access(self) -> bool: return self.is_realm_owner or self.is_billing_admin @property def is_realm_owner(self) -> bool: return self.role == UserProfile.ROLE_REALM_OWNER @is_realm_owner.setter def is_realm_owner(self, value: bool) -> None: if value: self.role = UserProfile.ROLE_REALM_OWNER elif self.role == UserProfile.ROLE_REALM_OWNER: # We need to be careful to not accidentally change # ROLE_GUEST to ROLE_MEMBER here. self.role = UserProfile.ROLE_MEMBER @property def is_guest(self) -> bool: return self.role == UserProfile.ROLE_GUEST @is_guest.setter def is_guest(self, value: bool) -> None: if value: self.role = UserProfile.ROLE_GUEST elif self.role == UserProfile.ROLE_GUEST: # We need to be careful to not accidentally change # ROLE_REALM_ADMINISTRATOR to ROLE_MEMBER here. self.role = UserProfile.ROLE_MEMBER @property def is_moderator(self) -> bool: return self.role == UserProfile.ROLE_MODERATOR @is_moderator.setter def is_moderator(self, value: bool) -> None: if value: self.role = UserProfile.ROLE_MODERATOR elif self.role == UserProfile.ROLE_MODERATOR: # We need to be careful to not accidentally change # ROLE_GUEST to ROLE_MEMBER here. self.role = UserProfile.ROLE_MEMBER @property def is_incoming_webhook(self) -> bool: return self.bot_type == UserProfile.INCOMING_WEBHOOK_BOT @property def allowed_bot_types(self) -> List[int]: allowed_bot_types = [] if ( self.is_realm_admin or not self.realm.bot_creation_policy == Realm.BOT_CREATION_LIMIT_GENERIC_BOTS ): allowed_bot_types.append(UserProfile.DEFAULT_BOT) allowed_bot_types += [ UserProfile.INCOMING_WEBHOOK_BOT, UserProfile.OUTGOING_WEBHOOK_BOT, ] if settings.EMBEDDED_BOTS_ENABLED: allowed_bot_types.append(UserProfile.EMBEDDED_BOT) return allowed_bot_types def email_address_is_realm_public(self) -> bool: if self.realm.email_address_visibility == Realm.EMAIL_ADDRESS_VISIBILITY_EVERYONE: return True if self.is_bot: return True return False def has_permission(self, policy_name: str) -> bool: if policy_name not in [ "add_custom_emoji_policy", "create_private_stream_policy", "create_public_stream_policy", "create_web_public_stream_policy", "delete_own_message_policy", "edit_topic_policy", "invite_to_stream_policy", "invite_to_realm_policy", "move_messages_between_streams_policy", "user_group_edit_policy", ]: raise AssertionError("Invalid policy") policy_value = getattr(self.realm, policy_name) if policy_value == Realm.POLICY_NOBODY: return False if policy_value == Realm.POLICY_EVERYONE: return True if self.is_realm_owner: return True if policy_value == Realm.POLICY_OWNERS_ONLY: return False if self.is_realm_admin: return True if policy_value == Realm.POLICY_ADMINS_ONLY: return False if self.is_moderator: return True if policy_value == Realm.POLICY_MODERATORS_ONLY: return False if self.is_guest: return False if policy_value == Realm.POLICY_MEMBERS_ONLY: return True assert policy_value == Realm.POLICY_FULL_MEMBERS_ONLY return not self.is_provisional_member def can_create_public_streams(self) -> bool: return self.has_permission("create_public_stream_policy") def can_create_private_streams(self) -> bool: return self.has_permission("create_private_stream_policy") def can_create_web_public_streams(self) -> bool: if not self.realm.web_public_streams_enabled(): return False return self.has_permission("create_web_public_stream_policy") def can_subscribe_other_users(self) -> bool: return self.has_permission("invite_to_stream_policy") def can_invite_others_to_realm(self) -> bool: return self.has_permission("invite_to_realm_policy") def can_move_messages_between_streams(self) -> bool: return self.has_permission("move_messages_between_streams_policy") def can_edit_user_groups(self) -> bool: return self.has_permission("user_group_edit_policy") def can_edit_topic_of_any_message(self) -> bool: return self.has_permission("edit_topic_policy") def can_add_custom_emoji(self) -> bool: return self.has_permission("add_custom_emoji_policy") def can_delete_own_message(self) -> bool: return self.has_permission("delete_own_message_policy") def can_access_public_streams(self) -> bool: return not (self.is_guest or self.realm.is_zephyr_mirror_realm) def major_tos_version(self) -> int: if self.tos_version is not None: return int(self.tos_version.split(".")[0]) else: return -1 def format_requestor_for_logs(self) -> str: return "{}@{}".format(self.id, self.realm.string_id or "root") def set_password(self, password: Optional[str]) -> None: if password is None: self.set_unusable_password() return from zproject.backends import check_password_strength if not check_password_strength(password): raise PasswordTooWeakError super().set_password(password) class Meta: indexes = [ models.Index(Upper("email"), name="upper_userprofile_email_idx"), ] class PasswordTooWeakError(Exception): pass class UserGroup(models.Model): # type: ignore[django-manager-missing] # django-stubs cannot resolve the custom CTEManager yet https://github.com/typeddjango/django-stubs/issues/1023 objects: CTEManager = CTEManager() name = models.CharField(max_length=100) direct_members = models.ManyToManyField( UserProfile, through="UserGroupMembership", related_name="direct_groups" ) direct_subgroups = models.ManyToManyField( "self", symmetrical=False, through="GroupGroupMembership", through_fields=("supergroup", "subgroup"), related_name="direct_supergroups", ) realm = models.ForeignKey(Realm, on_delete=CASCADE) description = models.TextField(default="") is_system_group = models.BooleanField(default=False) # Names for system groups. FULL_MEMBERS_GROUP_NAME = "@role:fullmembers" EVERYONE_ON_INTERNET_GROUP_NAME = "@role:internet" OWNERS_GROUP_NAME = "@role:owners" ADMINISTRATORS_GROUP_NAME = "@role:administrators" MODERATORS_GROUP_NAME = "@role:moderators" MEMBERS_GROUP_NAME = "@role:members" EVERYONE_GROUP_NAME = "@role:everyone" # We do not have "Full members" and "Everyone on the internet" # group here since there isn't a separate role value for full # members and spectators. SYSTEM_USER_GROUP_ROLE_MAP = { UserProfile.ROLE_REALM_OWNER: { "name": OWNERS_GROUP_NAME, "description": "Owners of this organization", }, UserProfile.ROLE_REALM_ADMINISTRATOR: { "name": ADMINISTRATORS_GROUP_NAME, "description": "Administrators of this organization, including owners", }, UserProfile.ROLE_MODERATOR: { "name": MODERATORS_GROUP_NAME, "description": "Moderators of this organization, including administrators", }, UserProfile.ROLE_MEMBER: { "name": MEMBERS_GROUP_NAME, "description": "Members of this organization, not including guests", }, UserProfile.ROLE_GUEST: { "name": EVERYONE_GROUP_NAME, "description": "Everyone in this organization, including guests", }, } class Meta: unique_together = (("realm", "name"),) class UserGroupMembership(models.Model): user_group = models.ForeignKey(UserGroup, on_delete=CASCADE, related_name="+") user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE, related_name="+") class Meta: unique_together = (("user_group", "user_profile"),) class GroupGroupMembership(models.Model): supergroup = models.ForeignKey(UserGroup, on_delete=CASCADE, related_name="+") subgroup = models.ForeignKey(UserGroup, on_delete=CASCADE, related_name="+") class Meta: constraints = [ models.UniqueConstraint( fields=["supergroup", "subgroup"], name="zerver_groupgroupmembership_uniq" ) ] def remote_user_to_email(remote_user: str) -> str: if settings.SSO_APPEND_DOMAIN is not None: return Address(username=remote_user, domain=settings.SSO_APPEND_DOMAIN).addr_spec return remote_user # Make sure we flush the UserProfile object from our remote cache # whenever we save it. post_save.connect(flush_user_profile, sender=UserProfile) class PreregistrationUser(models.Model): # Data on a partially created user, before the completion of # registration. This is used in at least three major code paths: # * Realm creation, in which case realm is None. # # * Invitations, in which case referred_by will always be set. # # * Social authentication signup, where it's used to store data # from the authentication step and pass it to the registration # form. email = models.EmailField() confirmation = GenericRelation("confirmation.Confirmation", related_query_name="prereg_user") # If the pre-registration process provides a suggested full name for this user, # store it here to use it to prepopulate the full name field in the registration form: full_name = models.CharField(max_length=UserProfile.MAX_NAME_LENGTH, null=True) full_name_validated = models.BooleanField(default=False) referred_by = models.ForeignKey(UserProfile, null=True, on_delete=CASCADE) streams = models.ManyToManyField("Stream") invited_at = models.DateTimeField(auto_now=True) realm_creation = models.BooleanField(default=False) # Indicates whether the user needs a password. Users who were # created via SSO style auth (e.g. GitHub/Google) generally do not. password_required = models.BooleanField(default=True) # status: whether an object has been confirmed. # if confirmed, set to confirmation.settings.STATUS_USED status = models.IntegerField(default=0) # The realm should only ever be None for PreregistrationUser # objects created as part of realm creation. realm = models.ForeignKey(Realm, null=True, on_delete=CASCADE) # These values should be consistent with the values # in settings_config.user_role_values. INVITE_AS = dict( REALM_OWNER=100, REALM_ADMIN=200, MODERATOR=300, MEMBER=400, GUEST_USER=600, ) invited_as = models.PositiveSmallIntegerField(default=INVITE_AS["MEMBER"]) multiuse_invite = models.ForeignKey("MultiuseInvite", null=True, on_delete=models.SET_NULL) # The UserProfile created upon completion of the registration # for this PregistrationUser created_user = models.ForeignKey( UserProfile, null=True, related_name="+", on_delete=models.SET_NULL ) class Meta: indexes = [ models.Index(Upper("email"), name="upper_preregistration_email_idx"), ] def filter_to_valid_prereg_users( query: QuerySet[PreregistrationUser], invite_expires_in_minutes: Union[Optional[int], UnspecifiedValue] = UnspecifiedValue(), ) -> QuerySet[PreregistrationUser]: """ If invite_expires_in_days is specified, we return only those PreregistrationUser objects that were created at most that many days in the past. """ used_value = confirmation_settings.STATUS_USED revoked_value = confirmation_settings.STATUS_REVOKED query = query.exclude(status__in=[used_value, revoked_value]) if invite_expires_in_minutes is None: # Since invite_expires_in_minutes is None, we're invitation will never # expire, we do not need to check anything else and can simply return # after excluding objects with active and revoked status. return query assert invite_expires_in_minutes is not None if not isinstance(invite_expires_in_minutes, UnspecifiedValue): lowest_datetime = timezone_now() - datetime.timedelta(minutes=invite_expires_in_minutes) return query.filter(invited_at__gte=lowest_datetime) else: return query.filter( Q(confirmation__expiry_date=None) | Q(confirmation__expiry_date__gte=timezone_now()) ) class MultiuseInvite(models.Model): referred_by = models.ForeignKey(UserProfile, on_delete=CASCADE) streams = models.ManyToManyField("Stream") realm = models.ForeignKey(Realm, on_delete=CASCADE) invited_as = models.PositiveSmallIntegerField(default=PreregistrationUser.INVITE_AS["MEMBER"]) class EmailChangeStatus(models.Model): new_email = models.EmailField() old_email = models.EmailField() updated_at = models.DateTimeField(auto_now=True) user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) # status: whether an object has been confirmed. # if confirmed, set to confirmation.settings.STATUS_USED status = models.IntegerField(default=0) realm = models.ForeignKey(Realm, on_delete=CASCADE) class RealmReactivationStatus(models.Model): # status: whether an object has been confirmed. # if confirmed, set to confirmation.settings.STATUS_USED status = models.IntegerField(default=0) realm = models.ForeignKey(Realm, on_delete=CASCADE) class AbstractPushDeviceToken(models.Model): APNS = 1 GCM = 2 KINDS = ( (APNS, "apns"), (GCM, "gcm"), ) kind = models.PositiveSmallIntegerField(choices=KINDS) # The token is a unique device-specific token that is # sent to us from each device: # - APNS token if kind == APNS # - GCM registration id if kind == GCM token = models.CharField(max_length=4096, db_index=True) # TODO: last_updated should be renamed date_created, since it is # no longer maintained as a last_updated value. last_updated = models.DateTimeField(auto_now=True) # [optional] Contains the app id of the device if it is an iOS device ios_app_id = models.TextField(null=True) class Meta: abstract = True class PushDeviceToken(AbstractPushDeviceToken): # The user whose device this is user = models.ForeignKey(UserProfile, db_index=True, on_delete=CASCADE) class Meta: unique_together = ("user", "kind", "token") def generate_email_token_for_stream() -> str: return secrets.token_hex(16) class Stream(models.Model): MAX_NAME_LENGTH = 60 MAX_DESCRIPTION_LENGTH = 1024 name = models.CharField(max_length=MAX_NAME_LENGTH, db_index=True) realm = models.ForeignKey(Realm, db_index=True, on_delete=CASCADE) date_created = models.DateTimeField(default=timezone_now) deactivated = models.BooleanField(default=False) description = models.CharField(max_length=MAX_DESCRIPTION_LENGTH, default="") rendered_description = models.TextField(default="") # Foreign key to the Recipient object for STREAM type messages to this stream. recipient = models.ForeignKey(Recipient, null=True, on_delete=models.SET_NULL) # Various permission policy configurations PERMISSION_POLICIES: Dict[str, Dict[str, Any]] = { "web_public": { "invite_only": False, "history_public_to_subscribers": True, "is_web_public": True, "policy_name": gettext_lazy("Web-public"), }, "public": { "invite_only": False, "history_public_to_subscribers": True, "is_web_public": False, "policy_name": gettext_lazy("Public"), }, "private_shared_history": { "invite_only": True, "history_public_to_subscribers": True, "is_web_public": False, "policy_name": gettext_lazy("Private, shared history"), }, "private_protected_history": { "invite_only": True, "history_public_to_subscribers": False, "is_web_public": False, "policy_name": gettext_lazy("Private, protected history"), }, # Public streams with protected history are currently only # available in Zephyr realms "public_protected_history": { "invite_only": False, "history_public_to_subscribers": False, "is_web_public": False, "policy_name": gettext_lazy("Public, protected history"), }, } invite_only = models.BooleanField(default=False) history_public_to_subscribers = models.BooleanField(default=True) # Whether this stream's content should be published by the web-public archive features is_web_public = models.BooleanField(default=False) STREAM_POST_POLICY_EVERYONE = 1 STREAM_POST_POLICY_ADMINS = 2 STREAM_POST_POLICY_RESTRICT_NEW_MEMBERS = 3 STREAM_POST_POLICY_MODERATORS = 4 # TODO: Implement policy to restrict posting to a user group or admins. # Who in the organization has permission to send messages to this stream. stream_post_policy = models.PositiveSmallIntegerField(default=STREAM_POST_POLICY_EVERYONE) POST_POLICIES: Dict[int, StrPromise] = { # These strings should match the strings in the # stream_post_policy_values object in stream_data.js. STREAM_POST_POLICY_EVERYONE: gettext_lazy("All stream members can post"), STREAM_POST_POLICY_ADMINS: gettext_lazy("Only organization administrators can post"), STREAM_POST_POLICY_MODERATORS: gettext_lazy( "Only organization administrators and moderators can post" ), STREAM_POST_POLICY_RESTRICT_NEW_MEMBERS: gettext_lazy( "Only organization full members can post" ), } STREAM_POST_POLICY_TYPES = list(POST_POLICIES.keys()) # The unique thing about Zephyr public streams is that we never list their # users. We may try to generalize this concept later, but for now # we just use a concrete field. (Zephyr public streams aren't exactly like # invite-only streams--while both are private in terms of listing users, # for Zephyr we don't even list users to stream members, yet membership # is more public in the sense that you don't need a Zulip invite to join. # This field is populated directly from UserProfile.is_zephyr_mirror_realm, # and the reason for denormalizing field is performance. is_in_zephyr_realm = models.BooleanField(default=False) # Used by the e-mail forwarder. The e-mail RFC specifies a maximum # e-mail length of 254, and our max stream length is 30, so we # have plenty of room for the token. email_token = models.CharField( max_length=32, default=generate_email_token_for_stream, unique=True, ) # For old messages being automatically deleted. # Value NULL means "use retention policy of the realm". # Value -1 means "disable retention policy for this stream unconditionally". # Non-negative values have the natural meaning of "archive messages older than days". MESSAGE_RETENTION_SPECIAL_VALUES_MAP = { "unlimited": -1, "realm_default": None, } message_retention_days = models.IntegerField(null=True, default=None) # on_delete field here is set to RESTRICT because we don't want to allow # deleting a user group in case it is referenced by this settig. # We are not using PROTECT since we want to allow deletion of user groups # when realm itself is deleted. can_remove_subscribers_group = models.ForeignKey(UserGroup, on_delete=models.RESTRICT) # The very first message ID in the stream. Used to help clients # determine whether they might need to display "more topics" for a # stream based on what messages they have cached. first_message_id = models.IntegerField(null=True, db_index=True) def __str__(self) -> str: return f"" def is_public(self) -> bool: # All streams are private in Zephyr mirroring realms. return not self.invite_only and not self.is_in_zephyr_realm def is_history_realm_public(self) -> bool: return self.is_public() def is_history_public_to_subscribers(self) -> bool: return self.history_public_to_subscribers # Stream fields included whenever a Stream object is provided to # Zulip clients via the API. A few details worth noting: # * "id" is represented as "stream_id" in most API interfaces. # * "email_token" is not realm-public and thus is not included here. # * is_in_zephyr_realm is a backend-only optimization. # * "deactivated" streams are filtered from the API entirely. # * "realm" and "recipient" are not exposed to clients via the API. API_FIELDS = [ "date_created", "description", "first_message_id", "history_public_to_subscribers", "id", "invite_only", "is_web_public", "message_retention_days", "name", "rendered_description", "stream_post_policy", "can_remove_subscribers_group_id", ] @staticmethod def get_client_data(query: QuerySet["Stream"]) -> List[APIStreamDict]: query = query.only(*Stream.API_FIELDS) return [row.to_dict() for row in query] def to_dict(self) -> APIStreamDict: return APIStreamDict( can_remove_subscribers_group_id=self.can_remove_subscribers_group_id, date_created=datetime_to_timestamp(self.date_created), description=self.description, first_message_id=self.first_message_id, history_public_to_subscribers=self.history_public_to_subscribers, invite_only=self.invite_only, is_web_public=self.is_web_public, message_retention_days=self.message_retention_days, name=self.name, rendered_description=self.rendered_description, stream_id=self.id, stream_post_policy=self.stream_post_policy, is_announcement_only=self.stream_post_policy == Stream.STREAM_POST_POLICY_ADMINS, ) class Meta: indexes = [ models.Index(Upper("name"), name="upper_stream_name_idx"), ] post_save.connect(flush_stream, sender=Stream) post_delete.connect(flush_stream, sender=Stream) class UserTopic(models.Model): user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) stream = models.ForeignKey(Stream, on_delete=CASCADE) recipient = models.ForeignKey(Recipient, on_delete=CASCADE) topic_name = models.CharField(max_length=MAX_TOPIC_NAME_LENGTH) # The default value for last_updated is a few weeks before tracking # of when topics were muted was first introduced. It's designed # to be obviously incorrect so that one can tell it's backfilled data. last_updated = models.DateTimeField( default=datetime.datetime(2020, 1, 1, 0, 0, tzinfo=datetime.timezone.utc) ) # Implicitly, if a UserTopic does not exist, the (user, topic) # pair should have normal behavior for that (user, stream) pair. # We use this in our code to represent the condition in the comment above. VISIBILITY_POLICY_INHERIT = 0 # A normal muted topic. No notifications and unreads hidden. MUTED = 1 # This topic will behave like an unmuted topic in an unmuted stream even if it # belongs to a muted stream. UNMUTED = 2 # This topic will behave like `UNMUTED`, plus will also always trigger notifications. FOLLOWED = 3 visibility_policy_choices = ( (MUTED, "Muted topic"), (UNMUTED, "Unmuted topic in muted stream"), (FOLLOWED, "Followed topic"), (VISIBILITY_POLICY_INHERIT, "User's default policy for the stream."), ) visibility_policy = models.SmallIntegerField(choices=visibility_policy_choices, default=MUTED) class Meta: unique_together = ("user_profile", "stream", "topic_name") indexes = [ models.Index("stream", Upper("topic_name"), name="zerver_mutedtopic_stream_topic"), # This index is designed to optimize queries fetching the # set of users who have special policy for a stream, # e.g. for the send-message code paths. models.Index( fields=("stream", "topic_name", "visibility_policy", "user_profile"), name="zerver_usertopic_stream_topic_user_visibility_idx", ), # This index is useful for handling API requests fetching the # muted topics for a given user or user/stream pair. models.Index( fields=("user_profile", "visibility_policy", "stream", "topic_name"), name="zerver_usertopic_user_visibility_idx", ), ] def __str__(self) -> str: return f"" class MutedUser(models.Model): user_profile = models.ForeignKey(UserProfile, related_name="muter", on_delete=CASCADE) muted_user = models.ForeignKey(UserProfile, related_name="muted", on_delete=CASCADE) date_muted = models.DateTimeField(default=timezone_now) class Meta: unique_together = ("user_profile", "muted_user") def __str__(self) -> str: return f" {self.muted_user.email}>" post_save.connect(flush_muting_users_cache, sender=MutedUser) post_delete.connect(flush_muting_users_cache, sender=MutedUser) class Client(models.Model): name = models.CharField(max_length=30, db_index=True, unique=True) def __str__(self) -> str: return f"" get_client_cache: Dict[str, Client] = {} def clear_client_cache() -> None: # nocoverage global get_client_cache get_client_cache = {} def get_client(name: str) -> Client: # Accessing KEY_PREFIX through the module is necessary # because we need the updated value of the variable. cache_name = cache.KEY_PREFIX + name if cache_name not in get_client_cache: result = get_client_remote_cache(name) get_client_cache[cache_name] = result return get_client_cache[cache_name] def get_client_cache_key(name: str) -> str: return f"get_client:{make_safe_digest(name)}" @cache_with_key(get_client_cache_key, timeout=3600 * 24 * 7) def get_client_remote_cache(name: str) -> Client: (client, _) = Client.objects.get_or_create(name=name) return client @cache_with_key(get_stream_cache_key, timeout=3600 * 24 * 7) def get_realm_stream(stream_name: str, realm_id: int) -> Stream: return Stream.objects.select_related().get(name__iexact=stream_name.strip(), realm_id=realm_id) def get_active_streams(realm: Realm) -> QuerySet[Stream]: """ Return all streams (including invite-only streams) that have not been deactivated. """ return Stream.objects.filter(realm=realm, deactivated=False) def get_linkable_streams(realm_id: int) -> QuerySet[Stream]: """ This returns the streams that we are allowed to linkify using something like "#frontend" in our markup. For now the business rule is that you can link any stream in the realm that hasn't been deactivated (similar to how get_active_streams works). """ return Stream.objects.filter(realm_id=realm_id, deactivated=False) def get_stream(stream_name: str, realm: Realm) -> Stream: """ Callers that don't have a Realm object already available should use get_realm_stream directly, to avoid unnecessarily fetching the Realm object. """ return get_realm_stream(stream_name, realm.id) def get_stream_by_id_in_realm(stream_id: int, realm: Realm) -> Stream: return Stream.objects.select_related().get(id=stream_id, realm=realm) def bulk_get_streams(realm: Realm, stream_names: STREAM_NAMES) -> Dict[str, Any]: def fetch_streams_by_name(stream_names: List[str]) -> QuerySet[Stream]: # # This should be just # # Stream.objects.select_related().filter(name__iexact__in=stream_names, # realm_id=realm_id) # # But chaining __in and __iexact doesn't work with Django's # ORM, so we have the following hack to construct the relevant where clause where_clause = ( "upper(zerver_stream.name::text) IN (SELECT upper(name) FROM unnest(%s) AS name)" ) return ( get_active_streams(realm) .select_related() .extra(where=[where_clause], params=(list(stream_names),)) ) def stream_name_to_cache_key(stream_name: str) -> str: return get_stream_cache_key(stream_name, realm.id) def stream_to_lower_name(stream: Stream) -> str: return stream.name.lower() return bulk_cached_fetch( stream_name_to_cache_key, fetch_streams_by_name, [stream_name.lower() for stream_name in stream_names], id_fetcher=stream_to_lower_name, ) def get_huddle_recipient(user_profile_ids: Set[int]) -> Recipient: # The caller should ensure that user_profile_ids includes # the sender. Note that get_huddle hits the cache, and then # we hit another cache to get the recipient. We may want to # unify our caching strategy here. huddle = get_or_create_huddle(list(user_profile_ids)) assert huddle.recipient is not None return huddle.recipient def get_huddle_user_ids(recipient: Recipient) -> ValuesQuerySet["Subscription", int]: assert recipient.type == Recipient.HUDDLE return ( Subscription.objects.filter( recipient=recipient, ) .order_by("user_profile_id") .values_list("user_profile_id", flat=True) ) def bulk_get_huddle_user_ids(recipients: List[Recipient]) -> Dict[int, List[int]]: """ Takes a list of huddle-type recipients, returns a dict mapping recipient id to list of user ids in the huddle. """ assert all(recipient.type == Recipient.HUDDLE for recipient in recipients) if not recipients: return {} subscriptions = Subscription.objects.filter( recipient__in=recipients, ).order_by("user_profile_id") result_dict: Dict[int, List[int]] = {} for recipient in recipients: result_dict[recipient.id] = [ subscription.user_profile_id for subscription in subscriptions if subscription.recipient_id == recipient.id ] return result_dict class AbstractMessage(models.Model): sender = models.ForeignKey(UserProfile, on_delete=CASCADE) # The target of the message is signified by the Recipient object. # See the Recipient class for details. recipient = models.ForeignKey(Recipient, on_delete=CASCADE) # The message's topic. # # Early versions of Zulip called this concept a "subject", as in an email # "subject line", before changing to "topic" in 2013 (commit dac5a46fa). # UI and user documentation now consistently say "topic". New APIs and # new code should generally also say "topic". # # See also the `topic_name` method on `Message`. subject = models.CharField(max_length=MAX_TOPIC_NAME_LENGTH, db_index=True) content = models.TextField() rendered_content = models.TextField(null=True) rendered_content_version = models.IntegerField(null=True) date_sent = models.DateTimeField("date sent", db_index=True) sending_client = models.ForeignKey(Client, on_delete=CASCADE) last_edit_time = models.DateTimeField(null=True) # A JSON-encoded list of objects describing any past edits to this # message, oldest first. edit_history = models.TextField(null=True) has_attachment = models.BooleanField(default=False, db_index=True) has_image = models.BooleanField(default=False, db_index=True) has_link = models.BooleanField(default=False, db_index=True) class Meta: abstract = True def __str__(self) -> str: display_recipient = get_display_recipient(self.recipient) return f"<{self.__class__.__name__}: {display_recipient} / {self.subject} / {self.sender}>" class ArchiveTransaction(models.Model): timestamp = models.DateTimeField(default=timezone_now, db_index=True) # Marks if the data archived in this transaction has been restored: restored = models.BooleanField(default=False, db_index=True) type = models.PositiveSmallIntegerField(db_index=True) # Valid types: RETENTION_POLICY_BASED = 1 # Archiving was executed due to automated retention policies MANUAL = 2 # Archiving was run manually, via move_messages_to_archive function # ForeignKey to the realm with which objects archived in this transaction are associated. # If type is set to MANUAL, this should be null. realm = models.ForeignKey(Realm, null=True, on_delete=CASCADE) def __str__(self) -> str: return "ArchiveTransaction id: {id}, type: {type}, realm: {realm}, timestamp: {timestamp}".format( id=self.id, type="MANUAL" if self.type == self.MANUAL else "RETENTION_POLICY_BASED", realm=self.realm.string_id if self.realm else None, timestamp=self.timestamp, ) class ArchivedMessage(AbstractMessage): """Used as a temporary holding place for deleted messages before they are permanently deleted. This is an important part of a robust 'message retention' feature. """ archive_transaction = models.ForeignKey(ArchiveTransaction, on_delete=CASCADE) class Message(AbstractMessage): search_tsvector = SearchVectorField(null=True) def topic_name(self) -> str: """ Please start using this helper to facilitate an eventual switch over to a separate topic table. """ return self.subject def set_topic_name(self, topic_name: str) -> None: self.subject = topic_name def is_stream_message(self) -> bool: """ Find out whether a message is a stream message by looking up its recipient.type. TODO: Make this an easier operation by denormalizing the message type onto Message, either explicitly (message.type) or implicitly (message.stream_id is not None). """ return self.recipient.type == Recipient.STREAM def get_realm(self) -> Realm: return self.sender.realm def save_rendered_content(self) -> None: self.save(update_fields=["rendered_content", "rendered_content_version"]) @staticmethod def need_to_render_content( rendered_content: Optional[str], rendered_content_version: Optional[int], markdown_version: int, ) -> bool: return ( rendered_content is None or rendered_content_version is None or rendered_content_version < markdown_version ) def sent_by_human(self) -> bool: """Used to determine whether a message was sent by a full Zulip UI style client (and thus whether the message should be treated as sent by a human and automatically marked as read for the sender). The purpose of this distinction is to ensure that message sent to the user by e.g. a Google Calendar integration using the user's own API key don't get marked as read automatically. """ sending_client = self.sending_client.name.lower() return ( sending_client in ( "zulipandroid", "zulipios", "zulipdesktop", "zulipmobile", "zulipelectron", "zulipterminal", "snipe", "website", "ios", "android", ) ) or ("desktop app" in sending_client) @staticmethod def is_status_message(content: str, rendered_content: str) -> bool: """ "status messages" start with /me and have special rendering: /me loves chocolate -> Full Name loves chocolate """ if content.startswith("/me "): return True return False class Meta: indexes = [ GinIndex("search_tsvector", fastupdate=False, name="zerver_message_search_tsvector"), models.Index(Upper("subject"), name="upper_subject_idx"), models.Index("date_sent", name="zerver_message_date_sent_3b5b05d8"), models.Index( "recipient", Upper("subject"), F("id").desc(nulls_last=True), name="zerver_message_recipient_upper_subject", ), models.Index( "recipient", "subject", F("id").desc(nulls_last=True), name="zerver_message_recipient_subject", ), ] def get_context_for_message(message: Message) -> QuerySet[Message]: return Message.objects.filter( recipient_id=message.recipient_id, subject=message.subject, id__lt=message.id, date_sent__gt=message.date_sent - timedelta(minutes=15), ).order_by("-id")[:10] post_save.connect(flush_message, sender=Message) class AbstractSubMessage(models.Model): # We can send little text messages that are associated with a regular # Zulip message. These can be used for experimental widgets like embedded # games, surveys, mini threads, etc. These are designed to be pretty # generic in purpose. sender = models.ForeignKey(UserProfile, on_delete=CASCADE) msg_type = models.TextField() content = models.TextField() class Meta: abstract = True class SubMessage(AbstractSubMessage): message = models.ForeignKey(Message, on_delete=CASCADE) @staticmethod def get_raw_db_rows(needed_ids: List[int]) -> List[Dict[str, Any]]: fields = ["id", "message_id", "sender_id", "msg_type", "content"] query = SubMessage.objects.filter(message_id__in=needed_ids).values(*fields) query = query.order_by("message_id", "id") return list(query) class ArchivedSubMessage(AbstractSubMessage): message = models.ForeignKey(ArchivedMessage, on_delete=CASCADE) post_save.connect(flush_submessage, sender=SubMessage) class Draft(models.Model): """Server-side storage model for storing drafts so that drafts can be synced across multiple clients/devices. """ user_profile = models.ForeignKey(UserProfile, on_delete=models.CASCADE) recipient = models.ForeignKey(Recipient, null=True, on_delete=models.SET_NULL) topic = models.CharField(max_length=MAX_TOPIC_NAME_LENGTH, db_index=True) content = models.TextField() # Length should not exceed MAX_MESSAGE_LENGTH last_edit_time = models.DateTimeField(db_index=True) def __str__(self) -> str: return f"<{self.__class__.__name__}: {self.user_profile.email} / {self.id} / {self.last_edit_time}>" def to_dict(self) -> Dict[str, Any]: if self.recipient is None: _type = "" to = [] elif self.recipient.type == Recipient.STREAM: _type = "stream" to = [self.recipient.type_id] else: _type = "private" if self.recipient.type == Recipient.PERSONAL: to = [self.recipient.type_id] else: to = [] for r in get_display_recipient(self.recipient): assert not isinstance(r, str) # It will only be a string for streams if not r["id"] == self.user_profile_id: to.append(r["id"]) return { "id": self.id, "type": _type, "to": to, "topic": self.topic, "content": self.content, "timestamp": int(self.last_edit_time.timestamp()), } class AbstractEmoji(models.Model): """For emoji reactions to messages (and potentially future reaction types). Emoji are surprisingly complicated to implement correctly. For details on how this subsystem works, see: https://zulip.readthedocs.io/en/latest/subsystems/emoji.html """ user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) # The user-facing name for an emoji reaction. With emoji aliases, # there may be multiple accepted names for a given emoji; this # field encodes which one the user selected. emoji_name = models.TextField() UNICODE_EMOJI = "unicode_emoji" REALM_EMOJI = "realm_emoji" ZULIP_EXTRA_EMOJI = "zulip_extra_emoji" REACTION_TYPES = ( (UNICODE_EMOJI, gettext_lazy("Unicode emoji")), (REALM_EMOJI, gettext_lazy("Custom emoji")), (ZULIP_EXTRA_EMOJI, gettext_lazy("Zulip extra emoji")), ) reaction_type = models.CharField(default=UNICODE_EMOJI, choices=REACTION_TYPES, max_length=30) # A string with the property that (realm, reaction_type, # emoji_code) uniquely determines the emoji glyph. # # We cannot use `emoji_name` for this purpose, since the # name-to-glyph mappings for unicode emoji change with time as we # update our emoji database, and multiple custom emoji can have # the same `emoji_name` in a realm (at most one can have # `deactivated=False`). The format for `emoji_code` varies by # `reaction_type`: # # * For Unicode emoji, a dash-separated hex encoding of the sequence of # Unicode codepoints that define this emoji in the Unicode # specification. For examples, see "non_qualified" or "unified" in the # following data, with "non_qualified" taking precedence when both present: # https://raw.githubusercontent.com/iamcal/emoji-data/master/emoji_pretty.json # # * For user uploaded custom emoji (`reaction_type="realm_emoji"`), the stringified ID # of the RealmEmoji object, computed as `str(realm_emoji.id)`. # # * For "Zulip extra emoji" (like :zulip:), the name of the emoji (e.g. "zulip"). emoji_code = models.TextField() class Meta: abstract = True class AbstractReaction(AbstractEmoji): class Meta: abstract = True unique_together = ( ("user_profile", "message", "emoji_name"), ("user_profile", "message", "reaction_type", "emoji_code"), ) class Reaction(AbstractReaction): message = models.ForeignKey(Message, on_delete=CASCADE) @staticmethod def get_raw_db_rows(needed_ids: List[int]) -> List[Dict[str, Any]]: fields = [ "message_id", "emoji_name", "emoji_code", "reaction_type", "user_profile__email", "user_profile_id", "user_profile__full_name", ] # The ordering is important here, as it makes it convenient # for clients to display reactions in order without # client-side sorting code. return Reaction.objects.filter(message_id__in=needed_ids).values(*fields).order_by("id") def __str__(self) -> str: return f"{self.user_profile.email} / {self.message.id} / {self.emoji_name}" class ArchivedReaction(AbstractReaction): message = models.ForeignKey(ArchivedMessage, on_delete=CASCADE) # Whenever a message is sent, for each user subscribed to the # corresponding Recipient object (that is not long-term idle), we add # a row to the UserMessage table indicating that that user received # that message. This table allows us to quickly query any user's last # 1000 messages to generate the home view and search exactly the # user's message history. # # The long-term idle optimization is extremely important for large, # open organizations, and is described in detail here: # https://zulip.readthedocs.io/en/latest/subsystems/sending-messages.html#soft-deactivation # # In particular, new messages to public streams will only generate # UserMessage rows for Members who are long_term_idle if they would # have nonzero flags for the message (E.g. a mention, alert word, or # mobile push notification). # # The flags field stores metadata like whether the user has read the # message, starred or collapsed the message, was mentioned in the # message, etc. We use of postgres partial indexes on flags to make # queries for "User X's messages with flag Y" extremely fast without # consuming much storage space. # # UserMessage is the largest table in many Zulip installations, even # though each row is only 4 integers. class AbstractUserMessage(models.Model): id = models.BigAutoField(primary_key=True) user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) # The order here is important! It's the order of fields in the bitfield. ALL_FLAGS = [ "read", "starred", "collapsed", "mentioned", "wildcard_mentioned", # These next 4 flags are from features that have since been removed. "summarize_in_home", "summarize_in_stream", "force_expand", "force_collapse", # Whether the message contains any of the user's alert words. "has_alert_word", # The historical flag is used to mark messages which the user # did not receive when they were sent, but later added to # their history via e.g. starring the message. This is # important accounting for the "Subscribed to stream" dividers. "historical", # Whether the message is a private message; this flag is a # denormalization of message.recipient.type to support an # efficient index on UserMessage for a user's private messages. "is_private", # Whether we've sent a push notification to the user's mobile # devices for this message that has not been revoked. "active_mobile_push_notification", ] # Certain flags are used only for internal accounting within the # Zulip backend, and don't make sense to expose to the API. NON_API_FLAGS = {"is_private", "active_mobile_push_notification"} # Certain additional flags are just set once when the UserMessage # row is created. NON_EDITABLE_FLAGS = { # These flags are bookkeeping and don't make sense to edit. "has_alert_word", "mentioned", "wildcard_mentioned", "historical", # Unused flags can't be edited. "force_expand", "force_collapse", "summarize_in_home", "summarize_in_stream", } flags: BitHandler = BitField(flags=ALL_FLAGS, default=0) class Meta: abstract = True unique_together = ("user_profile", "message") @staticmethod def where_flag_is_present(flagattr: Bit) -> str: # Use this for Django ORM queries to access starred messages. # This custom SQL plays nice with our partial indexes. Grep # the code for example usage. # # The key detail is that e.g. # UserMessage.objects.filter(user_profile=user_profile, flags=UserMessage.flags.starred) # will generate a query involving `flags & 2 = 2`, which doesn't match our index. return f"flags & {1 << flagattr.number} <> 0" @staticmethod def where_flag_is_absent(flagattr: Bit) -> str: return f"flags & {1 << flagattr.number} = 0" @staticmethod def where_unread() -> str: return AbstractUserMessage.where_flag_is_absent(getattr(AbstractUserMessage.flags, "read")) @staticmethod def where_read() -> str: return AbstractUserMessage.where_flag_is_present(getattr(AbstractUserMessage.flags, "read")) @staticmethod def where_starred() -> str: return AbstractUserMessage.where_flag_is_present( getattr(AbstractUserMessage.flags, "starred") ) @staticmethod def where_active_push_notification() -> str: return AbstractUserMessage.where_flag_is_present( getattr(AbstractUserMessage.flags, "active_mobile_push_notification") ) def flags_list(self) -> List[str]: flags = int(self.flags) return self.flags_list_for_flags(flags) @staticmethod def flags_list_for_flags(val: int) -> List[str]: """ This function is highly optimized, because it actually slows down sending messages in a naive implementation. """ flags = [] mask = 1 for flag in UserMessage.ALL_FLAGS: if (val & mask) and flag not in AbstractUserMessage.NON_API_FLAGS: flags.append(flag) mask <<= 1 return flags class UserMessage(AbstractUserMessage): message = models.ForeignKey(Message, on_delete=CASCADE) class Meta(AbstractUserMessage.Meta): indexes = [ models.Index( "user_profile", "message", condition=Q(flags__andnz=AbstractUserMessage.flags.starred.mask), name="zerver_usermessage_starred_message_id", ), models.Index( "user_profile", "message", condition=Q(flags__andnz=AbstractUserMessage.flags.mentioned.mask), name="zerver_usermessage_mentioned_message_id", ), models.Index( "user_profile", "message", condition=Q(flags__andz=AbstractUserMessage.flags.read.mask), name="zerver_usermessage_unread_message_id", ), models.Index( "user_profile", "message", condition=Q(flags__andnz=AbstractUserMessage.flags.has_alert_word.mask), name="zerver_usermessage_has_alert_word_message_id", ), models.Index( "user_profile", "message", condition=Q(flags__andnz=AbstractUserMessage.flags.mentioned.mask) | Q(flags__andnz=AbstractUserMessage.flags.wildcard_mentioned.mask), name="zerver_usermessage_wildcard_mentioned_message_id", ), models.Index( "user_profile", "message", condition=Q(flags__andnz=AbstractUserMessage.flags.is_private.mask), name="zerver_usermessage_is_private_message_id", ), models.Index( "user_profile", "message", condition=Q( flags__andnz=AbstractUserMessage.flags.active_mobile_push_notification.mask ), name="zerver_usermessage_active_mobile_push_notification_id", ), ] def __str__(self) -> str: display_recipient = get_display_recipient(self.message.recipient) return f"<{self.__class__.__name__}: {display_recipient} / {self.user_profile.email} ({self.flags_list()})>" @staticmethod def select_for_update_query() -> QuerySet["UserMessage"]: """This SELECT FOR UPDATE query ensures consistent ordering on the row locks acquired by a bulk update operation to modify message flags using bitand/bitor. This consistent ordering is important to prevent to prevent deadlocks when 2 or more bulk updates to the same rows in the UserMessage table race against each other (For example, if a client submits simultaneous duplicate API requests to mark a certain set of messages as read). """ return UserMessage.objects.select_for_update().order_by("message_id") def get_usermessage_by_message_id( user_profile: UserProfile, message_id: int ) -> Optional[UserMessage]: try: return UserMessage.objects.select_related().get( user_profile=user_profile, message_id=message_id ) except UserMessage.DoesNotExist: return None class ArchivedUserMessage(AbstractUserMessage): """Used as a temporary holding place for deleted UserMessages objects before they are permanently deleted. This is an important part of a robust 'message retention' feature. """ message = models.ForeignKey(ArchivedMessage, on_delete=CASCADE) def __str__(self) -> str: display_recipient = get_display_recipient(self.message.recipient) return f"<{self.__class__.__name__}: {display_recipient} / {self.user_profile.email} ({self.flags_list()})>" class AbstractAttachment(models.Model): file_name = models.TextField(db_index=True) # path_id is a storage location agnostic representation of the path of the file. # If the path of a file is http://localhost:9991/user_uploads/a/b/abc/temp_file.py # then its path_id will be a/b/abc/temp_file.py. path_id = models.TextField(db_index=True, unique=True) owner = models.ForeignKey(UserProfile, on_delete=CASCADE) realm = models.ForeignKey(Realm, on_delete=CASCADE) create_time = models.DateTimeField( default=timezone_now, db_index=True, ) # Size of the uploaded file, in bytes size = models.IntegerField() # The two fields below serve as caches to let us avoid looking up # the corresponding messages/streams to check permissions before # serving these files. # # For both fields, the `null` state is used when a change in # message permissions mean that we need to determine their proper # value. # Whether this attachment has been posted to a public stream, and # thus should be available to all non-guest users in the # organization (even if they weren't a recipient of a message # linking to it). is_realm_public = models.BooleanField(default=False, null=True) # Whether this attachment has been posted to a web-public stream, # and thus should be available to everyone on the internet, even # if the person isn't logged in. is_web_public = models.BooleanField(default=False, null=True) class Meta: abstract = True def __str__(self) -> str: return f"<{self.__class__.__name__}: {self.file_name}>" class ArchivedAttachment(AbstractAttachment): """Used as a temporary holding place for deleted Attachment objects before they are permanently deleted. This is an important part of a robust 'message retention' feature. Unlike the similar archive tables, ArchivedAttachment does not have an ArchiveTransaction foreign key, and thus will not be directly deleted by clean_archived_data. Instead, attachments that were only referenced by now fully deleted messages will leave ArchivedAttachment objects with empty `.messages`. A second step, delete_old_unclaimed_attachments, will delete the resulting orphaned ArchivedAttachment objects, along with removing the associated uploaded files from storage. """ messages = models.ManyToManyField( ArchivedMessage, related_name="attachment_set", related_query_name="attachment" ) class Attachment(AbstractAttachment): messages = models.ManyToManyField(Message) def is_claimed(self) -> bool: return self.messages.count() > 0 def to_dict(self) -> Dict[str, Any]: return { "id": self.id, "name": self.file_name, "path_id": self.path_id, "size": self.size, # convert to JavaScript-style UNIX timestamp so we can take # advantage of client time zones. "create_time": int(time.mktime(self.create_time.timetuple()) * 1000), "messages": [ { "id": m.id, "date_sent": int(time.mktime(m.date_sent.timetuple()) * 1000), } for m in self.messages.all() ], } post_save.connect(flush_used_upload_space_cache, sender=Attachment) post_delete.connect(flush_used_upload_space_cache, sender=Attachment) def validate_attachment_request_for_spectator_access( realm: Realm, attachment: Attachment ) -> Optional[bool]: if attachment.realm != realm: return False # Update cached is_web_public property, if necessary. if attachment.is_web_public is None: # Fill the cache in a single query. This is important to avoid # a potential race condition between checking and setting, # where the attachment could have been moved again. Attachment.objects.filter(id=attachment.id, is_web_public__isnull=True).update( is_web_public=Exists( Message.objects.filter( attachment=OuterRef("id"), recipient__stream__invite_only=False, recipient__stream__is_web_public=True, ), ), ) attachment.refresh_from_db() if not attachment.is_web_public: return False if settings.RATE_LIMITING: try: from zerver.lib.rate_limiter import rate_limit_spectator_attachment_access_by_file rate_limit_spectator_attachment_access_by_file(attachment.path_id) except RateLimited: return False return True def validate_attachment_request( maybe_user_profile: Union[UserProfile, AnonymousUser], path_id: str, realm: Optional[Realm] = None, ) -> Optional[bool]: try: attachment = Attachment.objects.get(path_id=path_id) except Attachment.DoesNotExist: return None if isinstance(maybe_user_profile, AnonymousUser): assert realm is not None return validate_attachment_request_for_spectator_access(realm, attachment) user_profile = maybe_user_profile assert isinstance(user_profile, UserProfile) # Update cached is_realm_public property, if necessary. if attachment.is_realm_public is None: # Fill the cache in a single query. This is important to avoid # a potential race condition between checking and setting, # where the attachment could have been moved again. Attachment.objects.filter(id=attachment.id, is_realm_public__isnull=True).update( is_realm_public=Exists( Message.objects.filter( attachment=OuterRef("id"), recipient__stream__invite_only=False, ), ), ) attachment.refresh_from_db() if user_profile == attachment.owner: # If you own the file, you can access it. return True if ( attachment.is_realm_public and attachment.realm == user_profile.realm and user_profile.can_access_public_streams() ): # Any user in the realm can access realm-public files return True messages = attachment.messages.all() if UserMessage.objects.filter(user_profile=user_profile, message__in=messages).exists(): # If it was sent in a private message or private stream # message, then anyone who received that message can access it. return True # The user didn't receive any of the messages that included this # attachment. But they might still have access to it, if it was # sent to a stream they are on where history is public to # subscribers. # These are subscriptions to a stream one of the messages was sent to relevant_stream_ids = Subscription.objects.filter( user_profile=user_profile, active=True, recipient__type=Recipient.STREAM, recipient__in=[m.recipient_id for m in messages], ).values_list("recipient__type_id", flat=True) if len(relevant_stream_ids) == 0: return False return Stream.objects.filter( id__in=relevant_stream_ids, history_public_to_subscribers=True ).exists() def get_old_unclaimed_attachments( weeks_ago: int, ) -> Tuple[QuerySet[Attachment], QuerySet[ArchivedAttachment]]: """ The logic in this function is fairly tricky. The essence is that a file should be cleaned up if and only if it not referenced by any Message or ArchivedMessage. The way to find that out is through the Attachment and ArchivedAttachment tables. The queries are complicated by the fact that an uploaded file may have either only an Attachment row, only an ArchivedAttachment row, or both - depending on whether some, all or none of the messages linking to it have been archived. """ delta_weeks_ago = timezone_now() - datetime.timedelta(weeks=weeks_ago) old_attachments = Attachment.objects.annotate( has_other_messages=Exists( ArchivedAttachment.objects.filter(id=OuterRef("id")).exclude(messages=None) ) ).filter(messages=None, create_time__lt=delta_weeks_ago, has_other_messages=False) old_archived_attachments = ArchivedAttachment.objects.annotate( has_other_messages=Exists( Attachment.objects.filter(id=OuterRef("id")).exclude(messages=None) ) ).filter(messages=None, create_time__lt=delta_weeks_ago, has_other_messages=False) return old_attachments, old_archived_attachments class Subscription(models.Model): """Keeps track of which users are part of the audience for a given Recipient object. For private and group private message Recipient objects, only the user_profile and recipient fields have any meaning, defining the immutable set of users who are in the audience for that Recipient. For Recipient objects associated with a Stream, the remaining fields in this model describe the user's subscription to that stream. """ user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) recipient = models.ForeignKey(Recipient, on_delete=CASCADE) # Whether the user has since unsubscribed. We mark Subscription # objects as inactive, rather than deleting them, when a user # unsubscribes, so we can preserve user customizations like # notification settings, stream color, etc., if the user later # resubscribes. active = models.BooleanField(default=True) # This is a denormalization designed to improve the performance of # bulk queries of Subscription objects, Whether the subscribed user # is active tends to be a key condition in those queries. # We intentionally don't specify a default value to promote thinking # about this explicitly, as in some special cases, such as data import, # we may be creating Subscription objects for a user that's deactivated. is_user_active = models.BooleanField() # Whether this user had muted this stream. is_muted = models.BooleanField(default=False) DEFAULT_STREAM_COLOR = "#c2c2c2" color = models.CharField(max_length=10, default=DEFAULT_STREAM_COLOR) pin_to_top = models.BooleanField(default=False) # These fields are stream-level overrides for the user's default # configuration for notification, configured in UserProfile. The # default, None, means we just inherit the user-level default. desktop_notifications = models.BooleanField(null=True, default=None) audible_notifications = models.BooleanField(null=True, default=None) push_notifications = models.BooleanField(null=True, default=None) email_notifications = models.BooleanField(null=True, default=None) wildcard_mentions_notify = models.BooleanField(null=True, default=None) class Meta: unique_together = ("user_profile", "recipient") indexes = [ models.Index( fields=("recipient", "user_profile"), name="zerver_subscription_recipient_id_user_profile_id_idx", condition=Q(active=True, is_user_active=True), ), ] def __str__(self) -> str: return f" {self.recipient}>" # Subscription fields included whenever a Subscription object is provided to # Zulip clients via the API. A few details worth noting: # * These fields will generally be merged with Stream.API_FIELDS # data about the stream. # * "user_profile" is usually implied as full API access to Subscription # is primarily done for the current user; API access to other users' # subscriptions is generally limited to boolean yes/no. # * "id" and "recipient_id" are not included as they are not used # in the Zulip API; it's an internal implementation detail. # Subscription objects are always looked up in the API via # (user_profile, stream) pairs. # * "active" is often excluded in API use cases where it is implied. # * "is_muted" often needs to be copied to not "in_home_view" for # backwards-compatibility. API_FIELDS = [ "audible_notifications", "color", "desktop_notifications", "email_notifications", "is_muted", "pin_to_top", "push_notifications", "wildcard_mentions_notify", ] @cache_with_key(user_profile_by_id_cache_key, timeout=3600 * 24 * 7) def get_user_profile_by_id(user_profile_id: int) -> UserProfile: return UserProfile.objects.select_related().get(id=user_profile_id) def get_user_profile_by_email(email: str) -> UserProfile: """This function is intended to be used for manual manage.py shell work; robust code must use get_user or get_user_by_delivery_email instead, because Zulip supports multiple users with a given (delivery) email address existing on a single server (in different realms). """ return UserProfile.objects.select_related().get(delivery_email__iexact=email.strip()) @cache_with_key(user_profile_by_api_key_cache_key, timeout=3600 * 24 * 7) def maybe_get_user_profile_by_api_key(api_key: str) -> Optional[UserProfile]: try: return UserProfile.objects.select_related().get(api_key=api_key) except UserProfile.DoesNotExist: # We will cache failed lookups with None. The # use case here is that broken API clients may # continually ask for the same wrong API key, and # we want to handle that as quickly as possible. return None def get_user_profile_by_api_key(api_key: str) -> UserProfile: user_profile = maybe_get_user_profile_by_api_key(api_key) if user_profile is None: raise UserProfile.DoesNotExist() return user_profile def get_user_by_delivery_email(email: str, realm: Realm) -> UserProfile: """Fetches a user given their delivery email. For use in authentication/registration contexts. Do not use for user-facing views (e.g. Zulip API endpoints) as doing so would violate the EMAIL_ADDRESS_VISIBILITY_ADMINS security model. Use get_user in those code paths. """ return UserProfile.objects.select_related().get( delivery_email__iexact=email.strip(), realm=realm ) def get_users_by_delivery_email(emails: Set[str], realm: Realm) -> QuerySet[UserProfile]: """This is similar to get_user_by_delivery_email, and it has the same security caveats. It gets multiple users and returns a QuerySet, since most callers will only need two or three fields. If you are using this to get large UserProfile objects, you are probably making a mistake, but if you must, then use `select_related`. """ """ Django doesn't support delivery_email__iexact__in, so we simply OR all the filters that we'd do for the one-email case. """ email_filter = Q() for email in emails: email_filter |= Q(delivery_email__iexact=email.strip()) return UserProfile.objects.filter(realm=realm).filter(email_filter) @cache_with_key(user_profile_cache_key, timeout=3600 * 24 * 7) def get_user(email: str, realm: Realm) -> UserProfile: """Fetches the user by its visible-to-other users username (in the `email` field). For use in API contexts; do not use in authentication/registration contexts as doing so will break authentication in organizations using EMAIL_ADDRESS_VISIBILITY_ADMINS. In those code paths, use get_user_by_delivery_email. """ return UserProfile.objects.select_related().get(email__iexact=email.strip(), realm=realm) def get_active_user(email: str, realm: Realm) -> UserProfile: """Variant of get_user_by_email that excludes deactivated users. See get_user docstring for important usage notes.""" user_profile = get_user(email, realm) if not user_profile.is_active: raise UserProfile.DoesNotExist() return user_profile def get_user_profile_by_id_in_realm(uid: int, realm: Realm) -> UserProfile: return UserProfile.objects.select_related().get(id=uid, realm=realm) def get_active_user_profile_by_id_in_realm(uid: int, realm: Realm) -> UserProfile: user_profile = get_user_profile_by_id_in_realm(uid, realm) if not user_profile.is_active: raise UserProfile.DoesNotExist() return user_profile def get_user_including_cross_realm(email: str, realm: Realm) -> UserProfile: if is_cross_realm_bot_email(email): return get_system_bot(email, realm.id) assert realm is not None return get_user(email, realm) @cache_with_key(bot_profile_cache_key, timeout=3600 * 24 * 7) def get_system_bot(email: str, realm_id: int) -> UserProfile: """ This function doesn't use the realm_id argument yet, but requires passing it as preparation for adding system bots to each realm instead of having them all in a separate system bot realm. If you're calling this function, use the id of the realm in which the system bot will be after that migration. If the bot is supposed to send a message, the same realm as the one *to* which the message will be sent should be used - because cross-realm messages will be eliminated as part of the migration. """ return UserProfile.objects.select_related().get(email__iexact=email.strip()) def get_user_by_id_in_realm_including_cross_realm( uid: int, realm: Optional[Realm], ) -> UserProfile: user_profile = get_user_profile_by_id(uid) if user_profile.realm == realm: return user_profile # Note: This doesn't validate whether the `realm` passed in is # None/invalid for the is_cross_realm_bot_email case. if is_cross_realm_bot_email(user_profile.delivery_email): return user_profile raise UserProfile.DoesNotExist() @cache_with_key(realm_user_dicts_cache_key, timeout=3600 * 24 * 7) def get_realm_user_dicts(realm_id: int) -> List[Dict[str, Any]]: return UserProfile.objects.filter( realm_id=realm_id, ).values(*realm_user_dict_fields) @cache_with_key(active_user_ids_cache_key, timeout=3600 * 24 * 7) def active_user_ids(realm_id: int) -> List[int]: query = UserProfile.objects.filter( realm_id=realm_id, is_active=True, ).values_list("id", flat=True) return list(query) @cache_with_key(active_non_guest_user_ids_cache_key, timeout=3600 * 24 * 7) def active_non_guest_user_ids(realm_id: int) -> List[int]: query = ( UserProfile.objects.filter( realm_id=realm_id, is_active=True, ) .exclude( role=UserProfile.ROLE_GUEST, ) .values_list("id", flat=True) ) return list(query) def bot_owner_user_ids(user_profile: UserProfile) -> Set[int]: is_private_bot = ( user_profile.default_sending_stream and user_profile.default_sending_stream.invite_only or user_profile.default_events_register_stream and user_profile.default_events_register_stream.invite_only ) assert user_profile.bot_owner_id is not None if is_private_bot: return {user_profile.bot_owner_id} else: users = {user.id for user in user_profile.realm.get_human_admin_users()} users.add(user_profile.bot_owner_id) return users def get_source_profile(email: str, realm_id: int) -> Optional[UserProfile]: try: return get_user_by_delivery_email(email, get_realm_by_id(realm_id)) except (Realm.DoesNotExist, UserProfile.DoesNotExist): return None @cache_with_key(bot_dicts_in_realm_cache_key, timeout=3600 * 24 * 7) def get_bot_dicts_in_realm(realm: Realm) -> List[Dict[str, Any]]: return UserProfile.objects.filter(realm=realm, is_bot=True).values(*bot_dict_fields) def is_cross_realm_bot_email(email: str) -> bool: return email.lower() in settings.CROSS_REALM_BOT_EMAILS class Huddle(models.Model): """ Represents a group of individuals who may have a group private message conversation together. The membership of the Huddle is stored in the Subscription table just like with Streams - for each user in the Huddle, there is a Subscription object tied to the UserProfile and the Huddle's recipient object. A hash of the list of user IDs is stored in the huddle_hash field below, to support efficiently mapping from a set of users to the corresponding Huddle object. """ # TODO: We should consider whether using # CommaSeparatedIntegerField would be better. huddle_hash = models.CharField(max_length=40, db_index=True, unique=True) # Foreign key to the Recipient object for this Huddle. recipient = models.ForeignKey(Recipient, null=True, on_delete=models.SET_NULL) def get_huddle_hash(id_list: List[int]) -> str: id_list = sorted(set(id_list)) hash_key = ",".join(str(x) for x in id_list) return make_safe_digest(hash_key) def huddle_hash_cache_key(huddle_hash: str) -> str: return f"huddle_by_hash:{huddle_hash}" def get_or_create_huddle(id_list: List[int]) -> Huddle: """ Takes a list of user IDs and returns the Huddle object for the group consisting of these users. If the Huddle object does not yet exist, it will be transparently created. """ huddle_hash = get_huddle_hash(id_list) return get_or_create_huddle_backend(huddle_hash, id_list) @cache_with_key( lambda huddle_hash, id_list: huddle_hash_cache_key(huddle_hash), timeout=3600 * 24 * 7 ) def get_or_create_huddle_backend(huddle_hash: str, id_list: List[int]) -> Huddle: with transaction.atomic(): (huddle, created) = Huddle.objects.get_or_create(huddle_hash=huddle_hash) if created: recipient = Recipient.objects.create(type_id=huddle.id, type=Recipient.HUDDLE) huddle.recipient = recipient huddle.save(update_fields=["recipient"]) subs_to_create = [ Subscription( recipient=recipient, user_profile_id=user_profile_id, is_user_active=is_active, ) for user_profile_id, is_active in UserProfile.objects.filter(id__in=id_list) .distinct("id") .values_list("id", "is_active") ] Subscription.objects.bulk_create(subs_to_create) return huddle class UserActivity(models.Model): """Data table recording the last time each user hit Zulip endpoints via which Clients; unlike UserPresence, these data are not exposed to users via the Zulip API. Useful for debugging as well as to answer analytics questions like "How many users have accessed the Zulip mobile app in the last month?" or "Which users/organizations have recently used API endpoint X that is about to be desupported" for communications and database migration purposes. """ user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) client = models.ForeignKey(Client, on_delete=CASCADE) query = models.CharField(max_length=50, db_index=True) count = models.IntegerField() last_visit = models.DateTimeField("last visit") class Meta: unique_together = ("user_profile", "client", "query") class UserActivityInterval(models.Model): MIN_INTERVAL_LENGTH = datetime.timedelta(minutes=15) user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) start = models.DateTimeField("start time", db_index=True) end = models.DateTimeField("end time", db_index=True) class Meta: index_together = [ ("user_profile", "end"), ] class UserPresence(models.Model): """A record from the last time we heard from a given user on a given client. NOTE: Users can disable updates to this table (see UserProfile.presence_enabled), so this cannot be used to determine if a user was recently active on Zulip. The UserActivity table is recommended for that purpose. This is a tricky subsystem, because it is highly optimized. See the docs: https://zulip.readthedocs.io/en/latest/subsystems/presence.html """ class Meta: unique_together = ("user_profile", "client") index_together = [ ("realm", "timestamp"), ] user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) realm = models.ForeignKey(Realm, on_delete=CASCADE) client = models.ForeignKey(Client, on_delete=CASCADE) # The time we heard this update from the client. timestamp = models.DateTimeField("presence changed") # The user was actively using this Zulip client as of `timestamp` (i.e., # they had interacted with the client recently). When the timestamp is # itself recent, this is the green "active" status in the web app. ACTIVE = 1 # There had been no user activity (keyboard/mouse/etc.) on this client # recently. So the client was online at the specified time, but it # could be the user's desktop which they were away from. Displayed as # orange/idle if the timestamp is current. IDLE = 2 # Information from the client about the user's recent interaction with # that client, as of `timestamp`. Possible values above. # # There is no "inactive" status, because that is encoded by the # timestamp being old. status = models.PositiveSmallIntegerField(default=ACTIVE) @staticmethod def status_to_string(status: int) -> str: if status == UserPresence.ACTIVE: return "active" elif status == UserPresence.IDLE: return "idle" else: # nocoverage # TODO: Add a presence test to cover this. raise ValueError(f"Unknown status: {status}") @staticmethod def to_presence_dict( client_name: str, status: int, dt: datetime.datetime, push_enabled: bool = False, has_push_devices: bool = False, ) -> Dict[str, Any]: presence_val = UserPresence.status_to_string(status) timestamp = datetime_to_timestamp(dt) return dict( client=client_name, status=presence_val, timestamp=timestamp, pushable=(push_enabled and has_push_devices), ) def to_dict(self) -> Dict[str, Any]: return UserPresence.to_presence_dict( self.client.name, self.status, self.timestamp, ) @staticmethod def status_from_string(status: str) -> Optional[int]: if status == "active": # See https://github.com/python/mypy/issues/2611 status_val: Optional[int] = UserPresence.ACTIVE elif status == "idle": status_val = UserPresence.IDLE else: status_val = None return status_val class UserStatus(AbstractEmoji): user_profile = models.OneToOneField(UserProfile, on_delete=CASCADE) timestamp = models.DateTimeField() client = models.ForeignKey(Client, on_delete=CASCADE) # Override emoji_name and emoji_code field of (AbstractReaction model) to accept # default value. emoji_name = models.TextField(default="") emoji_code = models.TextField(default="") status_text = models.CharField(max_length=255, default="") class DefaultStream(models.Model): realm = models.ForeignKey(Realm, on_delete=CASCADE) stream = models.ForeignKey(Stream, on_delete=CASCADE) class Meta: unique_together = ("realm", "stream") class DefaultStreamGroup(models.Model): MAX_NAME_LENGTH = 60 name = models.CharField(max_length=MAX_NAME_LENGTH, db_index=True) realm = models.ForeignKey(Realm, on_delete=CASCADE) streams = models.ManyToManyField("Stream") description = models.CharField(max_length=1024, default="") class Meta: unique_together = ("realm", "name") def to_dict(self) -> Dict[str, Any]: return dict( name=self.name, id=self.id, description=self.description, streams=[stream.to_dict() for stream in self.streams.all().order_by("name")], ) def get_default_stream_groups(realm: Realm) -> QuerySet[DefaultStreamGroup]: return DefaultStreamGroup.objects.filter(realm=realm) class AbstractScheduledJob(models.Model): scheduled_timestamp = models.DateTimeField(db_index=True) # JSON representation of arguments to consumer data = models.TextField() realm = models.ForeignKey(Realm, on_delete=CASCADE) class Meta: abstract = True class ScheduledEmail(AbstractScheduledJob): # Exactly one of users or address should be set. These are # duplicate values, used to efficiently filter the set of # ScheduledEmails for use in clear_scheduled_emails; the # recipients used for actually sending messages are stored in the # data field of AbstractScheduledJob. users = models.ManyToManyField(UserProfile) # Just the address part of a full "name
" email address address = models.EmailField(null=True, db_index=True) # Valid types are below WELCOME = 1 DIGEST = 2 INVITATION_REMINDER = 3 type = models.PositiveSmallIntegerField() def __str__(self) -> str: return f"" class MissedMessageEmailAddress(models.Model): message = models.ForeignKey(Message, on_delete=CASCADE) user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) email_token = models.CharField(max_length=34, unique=True, db_index=True) # Timestamp of when the missed message address generated. timestamp = models.DateTimeField(db_index=True, default=timezone_now) # Number of times the missed message address has been used. times_used = models.PositiveIntegerField(default=0, db_index=True) def __str__(self) -> str: return settings.EMAIL_GATEWAY_PATTERN % (self.email_token,) def increment_times_used(self) -> None: self.times_used += 1 self.save(update_fields=["times_used"]) class NotificationTriggers: # "private_message" is for 1:1 PMs as well as huddles PRIVATE_MESSAGE = "private_message" MENTION = "mentioned" WILDCARD_MENTION = "wildcard_mentioned" STREAM_PUSH = "stream_push_notify" STREAM_EMAIL = "stream_email_notify" class ScheduledMessageNotificationEmail(models.Model): """Stores planned outgoing message notification emails. They may be processed earlier should Zulip choose to batch multiple messages in a single email, but typically will be processed just after scheduled_timestamp. """ user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) message = models.ForeignKey(Message, on_delete=CASCADE) EMAIL_NOTIFICATION_TRIGGER_CHOICES = [ (NotificationTriggers.PRIVATE_MESSAGE, "Private message"), (NotificationTriggers.MENTION, "Mention"), (NotificationTriggers.WILDCARD_MENTION, "Wildcard mention"), (NotificationTriggers.STREAM_EMAIL, "Stream notifications enabled"), ] trigger = models.TextField(choices=EMAIL_NOTIFICATION_TRIGGER_CHOICES) mentioned_user_group = models.ForeignKey(UserGroup, null=True, on_delete=CASCADE) # Timestamp for when the notification should be processed and sent. # Calculated from the time the event was received and the batching period. scheduled_timestamp = models.DateTimeField(db_index=True) class ScheduledMessage(models.Model): sender = models.ForeignKey(UserProfile, on_delete=CASCADE) recipient = models.ForeignKey(Recipient, on_delete=CASCADE) subject = models.CharField(max_length=MAX_TOPIC_NAME_LENGTH) content = models.TextField() sending_client = models.ForeignKey(Client, on_delete=CASCADE) stream = models.ForeignKey(Stream, null=True, on_delete=CASCADE) realm = models.ForeignKey(Realm, on_delete=CASCADE) scheduled_timestamp = models.DateTimeField(db_index=True) delivered = models.BooleanField(default=False) SEND_LATER = 1 REMIND = 2 DELIVERY_TYPES = ( (SEND_LATER, "send_later"), (REMIND, "remind"), ) delivery_type = models.PositiveSmallIntegerField( choices=DELIVERY_TYPES, default=SEND_LATER, ) def topic_name(self) -> str: return self.subject def set_topic_name(self, topic_name: str) -> None: self.subject = topic_name def __str__(self) -> str: display_recipient = get_display_recipient(self.recipient) return f"" EMAIL_TYPES = { "followup_day1": ScheduledEmail.WELCOME, "followup_day2": ScheduledEmail.WELCOME, "digest": ScheduledEmail.DIGEST, "invitation_reminder": ScheduledEmail.INVITATION_REMINDER, } class AbstractRealmAuditLog(models.Model): """Defines fields common to RealmAuditLog and RemoteRealmAuditLog.""" event_time = models.DateTimeField(db_index=True) # If True, event_time is an overestimate of the true time. Can be used # by migrations when introducing a new event_type. backfilled = models.BooleanField(default=False) # Keys within extra_data, when extra_data is a json dict. Keys are strings because # json keys must always be strings. OLD_VALUE = "1" NEW_VALUE = "2" ROLE_COUNT = "10" ROLE_COUNT_HUMANS = "11" ROLE_COUNT_BOTS = "12" extra_data = models.TextField(null=True) # Event types USER_CREATED = 101 USER_ACTIVATED = 102 USER_DEACTIVATED = 103 USER_REACTIVATED = 104 USER_ROLE_CHANGED = 105 USER_DELETED = 106 USER_DELETED_PRESERVING_MESSAGES = 107 USER_SOFT_ACTIVATED = 120 USER_SOFT_DEACTIVATED = 121 USER_PASSWORD_CHANGED = 122 USER_AVATAR_SOURCE_CHANGED = 123 USER_FULL_NAME_CHANGED = 124 USER_EMAIL_CHANGED = 125 USER_TERMS_OF_SERVICE_VERSION_CHANGED = 126 USER_API_KEY_CHANGED = 127 USER_BOT_OWNER_CHANGED = 128 USER_DEFAULT_SENDING_STREAM_CHANGED = 129 USER_DEFAULT_REGISTER_STREAM_CHANGED = 130 USER_DEFAULT_ALL_PUBLIC_STREAMS_CHANGED = 131 USER_SETTING_CHANGED = 132 USER_DIGEST_EMAIL_CREATED = 133 REALM_DEACTIVATED = 201 REALM_REACTIVATED = 202 REALM_SCRUBBED = 203 REALM_PLAN_TYPE_CHANGED = 204 REALM_LOGO_CHANGED = 205 REALM_EXPORTED = 206 REALM_PROPERTY_CHANGED = 207 REALM_ICON_SOURCE_CHANGED = 208 REALM_DISCOUNT_CHANGED = 209 REALM_SPONSORSHIP_APPROVED = 210 REALM_BILLING_METHOD_CHANGED = 211 REALM_REACTIVATION_EMAIL_SENT = 212 REALM_SPONSORSHIP_PENDING_STATUS_CHANGED = 213 REALM_SUBDOMAIN_CHANGED = 214 REALM_CREATED = 215 REALM_DEFAULT_USER_SETTINGS_CHANGED = 216 REALM_ORG_TYPE_CHANGED = 217 REALM_DOMAIN_ADDED = 218 REALM_DOMAIN_CHANGED = 219 REALM_DOMAIN_REMOVED = 220 REALM_PLAYGROUND_ADDED = 221 REALM_PLAYGROUND_REMOVED = 222 REALM_LINKIFIER_ADDED = 223 REALM_LINKIFIER_CHANGED = 224 REALM_LINKIFIER_REMOVED = 225 REALM_EMOJI_ADDED = 226 REALM_EMOJI_REMOVED = 227 SUBSCRIPTION_CREATED = 301 SUBSCRIPTION_ACTIVATED = 302 SUBSCRIPTION_DEACTIVATED = 303 SUBSCRIPTION_PROPERTY_CHANGED = 304 USER_MUTED = 350 USER_UNMUTED = 351 STRIPE_CUSTOMER_CREATED = 401 STRIPE_CARD_CHANGED = 402 STRIPE_PLAN_CHANGED = 403 STRIPE_PLAN_QUANTITY_RESET = 404 CUSTOMER_CREATED = 501 CUSTOMER_PLAN_CREATED = 502 CUSTOMER_SWITCHED_FROM_MONTHLY_TO_ANNUAL_PLAN = 503 STREAM_CREATED = 601 STREAM_DEACTIVATED = 602 STREAM_NAME_CHANGED = 603 STREAM_REACTIVATED = 604 STREAM_MESSAGE_RETENTION_DAYS_CHANGED = 605 STREAM_PROPERTY_CHANGED = 607 STREAM_CAN_REMOVE_SUBSCRIBERS_GROUP_CHANGED = 608 # The following values are only for RemoteZulipServerAuditLog # Values should be exactly 10000 greater than the corresponding # value used for the same purpose in RealmAuditLog (e.g. # REALM_DEACTIVATED = 201, and REMOTE_SERVER_DEACTIVATED = 10201). REMOTE_SERVER_CREATED = 10215 REMOTE_SERVER_PLAN_TYPE_CHANGED = 10204 REMOTE_SERVER_DEACTIVATED = 10201 event_type = models.PositiveSmallIntegerField() # event_types synced from on-prem installations to Zulip Cloud when # billing for mobile push notifications is enabled. Every billing # event_type should have ROLE_COUNT populated in extra_data. SYNCED_BILLING_EVENTS = [ USER_CREATED, USER_ACTIVATED, USER_DEACTIVATED, USER_REACTIVATED, USER_ROLE_CHANGED, REALM_DEACTIVATED, REALM_REACTIVATED, ] class Meta: abstract = True class RealmAuditLog(AbstractRealmAuditLog): """ RealmAuditLog tracks important changes to users, streams, and realms in Zulip. It is intended to support both debugging/introspection (e.g. determining when a user's left a given stream?) as well as help with some database migrations where we might be able to do a better data backfill with it. Here are a few key details about how this works: * acting_user is the user who initiated the state change * modified_user (if present) is the user being modified * modified_stream (if present) is the stream being modified For example: * When a user subscribes another user to a stream, modified_user, acting_user, and modified_stream will all be present and different. * When an administrator changes an organization's realm icon, acting_user is that administrator and both modified_user and modified_stream will be None. """ realm = models.ForeignKey(Realm, on_delete=CASCADE) acting_user = models.ForeignKey( UserProfile, null=True, related_name="+", on_delete=CASCADE, ) modified_user = models.ForeignKey( UserProfile, null=True, related_name="+", on_delete=CASCADE, ) modified_stream = models.ForeignKey( Stream, null=True, on_delete=CASCADE, ) event_last_message_id = models.IntegerField(null=True) def __str__(self) -> str: if self.modified_user is not None: return f"" if self.modified_stream is not None: return f"" return f"" class UserHotspot(models.Model): user = models.ForeignKey(UserProfile, on_delete=CASCADE) hotspot = models.CharField(max_length=30) timestamp = models.DateTimeField(default=timezone_now) class Meta: unique_together = ("user", "hotspot") def check_valid_user_ids(realm_id: int, val: object, allow_deactivated: bool = False) -> List[int]: user_ids = check_list(check_int)("User IDs", val) realm = Realm.objects.get(id=realm_id) for user_id in user_ids: # TODO: Structurally, we should be doing a bulk fetch query to # get the users here, not doing these in a loop. But because # this is a rarely used feature and likely to never have more # than a handful of users, it's probably mostly OK. try: user_profile = get_user_profile_by_id_in_realm(user_id, realm) except UserProfile.DoesNotExist: raise ValidationError(_("Invalid user ID: {}").format(user_id)) if not allow_deactivated: if not user_profile.is_active: raise ValidationError(_("User with ID {} is deactivated").format(user_id)) if user_profile.is_bot: raise ValidationError(_("User with ID {} is a bot").format(user_id)) return user_ids class CustomProfileField(models.Model): """Defines a form field for the per-realm custom profile fields feature. See CustomProfileFieldValue for an individual user's values for one of these fields. """ HINT_MAX_LENGTH = 80 NAME_MAX_LENGTH = 40 MAX_DISPLAY_IN_PROFILE_SUMMARY_FIELDS = 2 realm = models.ForeignKey(Realm, on_delete=CASCADE) name = models.CharField(max_length=NAME_MAX_LENGTH) hint = models.CharField(max_length=HINT_MAX_LENGTH, default="") # Sort order for display of custom profile fields. order = models.IntegerField(default=0) # Whether the field should be displayed in smaller summary # sections of a page displaying custom profile fields. display_in_profile_summary = models.BooleanField(default=False) SHORT_TEXT = 1 LONG_TEXT = 2 SELECT = 3 DATE = 4 URL = 5 USER = 6 EXTERNAL_ACCOUNT = 7 # These are the fields whose validators require more than var_name # and value argument. i.e. SELECT require field_data, USER require # realm as argument. SELECT_FIELD_TYPE_DATA: List[ExtendedFieldElement] = [ (SELECT, gettext_lazy("List of options"), validate_select_field, str, "SELECT"), ] USER_FIELD_TYPE_DATA: List[UserFieldElement] = [ (USER, gettext_lazy("Person picker"), check_valid_user_ids, orjson.loads, "USER"), ] SELECT_FIELD_VALIDATORS: Dict[int, ExtendedValidator] = { item[0]: item[2] for item in SELECT_FIELD_TYPE_DATA } USER_FIELD_VALIDATORS: Dict[int, RealmUserValidator] = { item[0]: item[2] for item in USER_FIELD_TYPE_DATA } FIELD_TYPE_DATA: List[FieldElement] = [ # Type, display name, validator, converter, keyword (SHORT_TEXT, gettext_lazy("Short text"), check_short_string, str, "SHORT_TEXT"), (LONG_TEXT, gettext_lazy("Long text"), check_long_string, str, "LONG_TEXT"), (DATE, gettext_lazy("Date picker"), check_date, str, "DATE"), (URL, gettext_lazy("Link"), check_url, str, "URL"), ( EXTERNAL_ACCOUNT, gettext_lazy("External account"), check_short_string, str, "EXTERNAL_ACCOUNT", ), ] ALL_FIELD_TYPES = [*FIELD_TYPE_DATA, *SELECT_FIELD_TYPE_DATA, *USER_FIELD_TYPE_DATA] FIELD_VALIDATORS: Dict[int, Validator[ProfileDataElementValue]] = { item[0]: item[2] for item in FIELD_TYPE_DATA } FIELD_CONVERTERS: Dict[int, Callable[[Any], Any]] = { item[0]: item[3] for item in ALL_FIELD_TYPES } FIELD_TYPE_CHOICES: List[Tuple[int, StrPromise]] = [ (item[0], item[1]) for item in ALL_FIELD_TYPES ] field_type = models.PositiveSmallIntegerField( choices=FIELD_TYPE_CHOICES, default=SHORT_TEXT, ) # A JSON blob of any additional data needed to define the field beyond # type/name/hint. # # The format depends on the type. Field types SHORT_TEXT, LONG_TEXT, # DATE, URL, and USER leave this empty. Fields of type SELECT store the # choices' descriptions. # # Note: There is no performance overhead of using TextField in PostgreSQL. # See https://www.postgresql.org/docs/9.0/static/datatype-character.html field_data = models.TextField(default="") class Meta: unique_together = ("realm", "name") def as_dict(self) -> ProfileDataElementBase: data_as_dict: ProfileDataElementBase = { "id": self.id, "name": self.name, "type": self.field_type, "hint": self.hint, "field_data": self.field_data, "order": self.order, } if self.display_in_profile_summary: data_as_dict["display_in_profile_summary"] = True return data_as_dict def is_renderable(self) -> bool: if self.field_type in [CustomProfileField.SHORT_TEXT, CustomProfileField.LONG_TEXT]: return True return False def __str__(self) -> str: return f"" def custom_profile_fields_for_realm(realm_id: int) -> QuerySet[CustomProfileField]: return CustomProfileField.objects.filter(realm=realm_id).order_by("order") class CustomProfileFieldValue(models.Model): user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) field = models.ForeignKey(CustomProfileField, on_delete=CASCADE) value = models.TextField() rendered_value = models.TextField(null=True, default=None) class Meta: unique_together = ("user_profile", "field") def __str__(self) -> str: return f"" # Interfaces for services # They provide additional functionality like parsing message to obtain query URL, data to be sent to URL, # and parsing the response. GENERIC_INTERFACE = "GenericService" SLACK_INTERFACE = "SlackOutgoingWebhookService" # A Service corresponds to either an outgoing webhook bot or an embedded bot. # The type of Service is determined by the bot_type field of the referenced # UserProfile. # # If the Service is an outgoing webhook bot: # - name is any human-readable identifier for the Service # - base_url is the address of the third-party site # - token is used for authentication with the third-party site # # If the Service is an embedded bot: # - name is the canonical name for the type of bot (e.g. 'xkcd' for an instance # of the xkcd bot); multiple embedded bots can have the same name, but all # embedded bots with the same name will run the same code # - base_url and token are currently unused class Service(models.Model): name = models.CharField(max_length=UserProfile.MAX_NAME_LENGTH) # Bot user corresponding to the Service. The bot_type of this user # determines the type of service. If non-bot services are added later, # user_profile can also represent the owner of the Service. user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) base_url = models.TextField() token = models.TextField() # Interface / API version of the service. interface = models.PositiveSmallIntegerField(default=1) # Valid interfaces are {generic, zulip_bot_service, slack} GENERIC = 1 SLACK = 2 ALLOWED_INTERFACE_TYPES = [ GENERIC, SLACK, ] # N.B. If we used Django's choice=... we would get this for free (kinda) _interfaces: Dict[int, str] = { GENERIC: GENERIC_INTERFACE, SLACK: SLACK_INTERFACE, } def interface_name(self) -> str: # Raises KeyError if invalid return self._interfaces[self.interface] def get_bot_services(user_profile_id: int) -> List[Service]: return list(Service.objects.filter(user_profile_id=user_profile_id)) def get_service_profile(user_profile_id: int, service_name: str) -> Service: return Service.objects.get(user_profile_id=user_profile_id, name=service_name) class BotStorageData(models.Model): bot_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) key = models.TextField(db_index=True) value = models.TextField() class Meta: unique_together = ("bot_profile", "key") class BotConfigData(models.Model): bot_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) key = models.TextField(db_index=True) value = models.TextField() class Meta: unique_together = ("bot_profile", "key") class InvalidFakeEmailDomain(Exception): pass def get_fake_email_domain(realm: Realm) -> str: try: # Check that realm.host can be used to form valid email addresses. validate_email(Address(username="bot", domain=realm.host).addr_spec) return realm.host except ValidationError: pass try: # Check that the fake email domain can be used to form valid email addresses. validate_email(Address(username="bot", domain=settings.FAKE_EMAIL_DOMAIN).addr_spec) except ValidationError: raise InvalidFakeEmailDomain( settings.FAKE_EMAIL_DOMAIN + " is not a valid domain. " "Consider setting the FAKE_EMAIL_DOMAIN setting." ) return settings.FAKE_EMAIL_DOMAIN class AlertWord(models.Model): # Realm isn't necessary, but it's a nice denormalization. Users # never move to another realm, so it's static, and having Realm # here optimizes the main query on this table, which is fetching # all the alert words in a realm. realm = models.ForeignKey(Realm, db_index=True, on_delete=CASCADE) user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE) # Case-insensitive name for the alert word. word = models.TextField() class Meta: unique_together = ("user_profile", "word") def flush_realm_alert_words(realm: Realm) -> None: cache_delete(realm_alert_words_cache_key(realm)) cache_delete(realm_alert_words_automaton_cache_key(realm)) def flush_alert_word(*, instance: AlertWord, **kwargs: object) -> None: realm = instance.realm flush_realm_alert_words(realm) post_save.connect(flush_alert_word, sender=AlertWord) post_delete.connect(flush_alert_word, sender=AlertWord)