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zulip/zerver/models.py

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from __future__ import absolute_import
from django.db import models
from django.conf import settings
from django.contrib.auth.models import AbstractBaseUser, UserManager, \
PermissionsMixin
from django.dispatch import receiver
from zerver.lib.cache import cache_with_key, flush_user_profile, flush_realm, \
user_profile_by_id_cache_key, user_profile_by_email_cache_key, \
generic_bulk_cached_fetch, cache_set, flush_stream, \
display_recipient_cache_key, cache_delete, \
get_stream_cache_key, active_user_dicts_in_realm_cache_key, \
active_bot_dicts_in_realm_cache_key
from zerver.lib.utils import make_safe_digest, generate_random_token
from django.db import transaction, IntegrityError
from zerver.lib.avatar import gravatar_hash, get_avatar_url
from django.utils import timezone
from django.contrib.sessions.models import Session
from zerver.lib.timestamp import datetime_to_timestamp
from django.db.models.signals import pre_save, post_save, post_delete
from guardian.shortcuts import get_users_with_perms
import zlib
from bitfield import BitField
from collections import defaultdict
from datetime import timedelta
import pylibmc
import re
import ujson
import logging
bugdown = None
MAX_SUBJECT_LENGTH = 60
MAX_MESSAGE_LENGTH = 10000
def is_super_user(user):
return user.email in settings.API_SUPER_USERS
def is_super_user_api(request):
return request.user.is_authenticated() and is_super_user(request.user)
# Doing 1000 memcached requests to get_display_recipient is quite slow,
# so add a local cache as well as the memcached cache.
per_request_display_recipient_cache = {}
def get_display_recipient_by_id(recipient_id, recipient_type, recipient_type_id):
if recipient_id not in per_request_display_recipient_cache:
result = get_display_recipient_memcached(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):
return get_display_recipient_by_id(
recipient.id,
recipient.type,
recipient.type_id
)
def flush_per_request_caches():
global per_request_display_recipient_cache
per_request_display_recipient_cache = {}
global per_request_realm_filters_cache
per_request_realm_filters_cache = {}
@cache_with_key(lambda *args: display_recipient_cache_key(args[0]),
timeout=3600*24*7)
def get_display_recipient_memcached(recipient_id, recipient_type, recipient_type_id):
"""
returns: an appropriate object describing the recipient. For a
stream this will be the stream name as a string. For a huddle or
personal, it will be an array of dicts about each recipient.
"""
if recipient_type == Recipient.STREAM:
stream = Stream.objects.get(id=recipient_type_id)
return stream.name
# We don't really care what the ordering is, just that it's deterministic.
user_profile_list = (UserProfile.objects.filter(subscription__recipient_id=recipient_id)
.select_related()
.order_by('email'))
return [{'email': user_profile.email,
'domain': user_profile.realm.domain,
'full_name': user_profile.full_name,
'short_name': user_profile.short_name,
'id': user_profile.id,
'is_mirror_dummy': user_profile.is_mirror_dummy,} for user_profile in user_profile_list]
def completely_open(domain):
# This domain is completely open to everyone on the internet to
# join. This is not the same as a "restricted_to_domain" realm: in
# those realms, users from outside the domain must be invited.
return domain and Realm.objects.filter(domain=domain).count() == 1 and \
domain.lower() == "customer3.invalid"
def get_realm_emoji_cache_key(realm):
return 'realm_emoji:%s' % (realm.id,)
class Realm(models.Model):
# domain is a domain in the Internet sense. It must be structured like a
# valid email domain. We use is to restrict access, identify bots, etc.
domain = models.CharField(max_length=40, db_index=True, unique=True)
# name is the user-visible identifier for the realm. It has no required
# structure.
name = models.CharField(max_length=40, null=True)
restricted_to_domain = models.BooleanField(default=True)
date_created = models.DateTimeField(default=timezone.now)
notifications_stream = models.ForeignKey('Stream', related_name='+', null=True, blank=True)
deactivated = models.BooleanField(default=False)
NOTIFICATION_STREAM_NAME = 'zulip'
def __repr__(self):
return (u"<Realm: %s %s>" % (self.domain, self.id)).encode("utf-8")
def __str__(self):
return self.__repr__()
@cache_with_key(get_realm_emoji_cache_key, timeout=3600*24*7)
def get_emoji(self):
return get_realm_emoji_uncached(self)
@property
def deployment(self):
try:
return self._deployments.all()[0]
except IndexError:
return None
@deployment.setter
def set_deployments(self, value):
self._deployments = [value]
def get_admin_users(self):
# This method is kind of expensive, due to our complex permissions model.
candidates = get_users_with_perms(self, only_with_perms=['administer'])
return candidates
def get_active_users(self):
return UserProfile.objects.filter(realm=self, is_active=True).select_related()
class Meta:
permissions = (
('administer', "Administer a realm"),
)
post_save.connect(flush_realm, sender=Realm)
class RealmAlias(models.Model):
realm = models.ForeignKey(Realm, null=True)
domain = models.CharField(max_length=80, db_index=True, unique=True)
# These functions should only be used on email addresses that have
# been validated via django.core.validators.validate_email
#
# Note that we need to use some care, since can you have multiple @-signs; e.g.
# "tabbott@test"@zulip.com
# is valid email address
def email_to_username(email):
return "@".join(email.split("@")[:-1]).lower()
# Returns the raw domain portion of the desired email address
def split_email_to_domain(email):
return email.split("@")[-1].lower()
# Returns the domain, potentually de-aliased, for the realm
# that this user's email is in
def resolve_email_to_domain(email):
domain = split_email_to_domain(email)
alias = alias_for_realm(domain)
if alias is not None:
domain = alias.realm.domain
return domain
def alias_for_realm(domain):
try:
return RealmAlias.objects.get(domain=domain)
except RealmAlias.DoesNotExist:
return None
def remote_user_to_email(remote_user):
if settings.SSO_APPEND_DOMAIN is not None:
remote_user += "@" + settings.SSO_APPEND_DOMAIN
return remote_user
class RealmEmoji(models.Model):
realm = models.ForeignKey(Realm)
name = models.TextField()
img_url = models.TextField()
class Meta:
unique_together = ("realm", "name")
def __str__(self):
return "<RealmEmoji(%s): %s %s>" % (self.realm.domain, self.name, self.img_url)
def get_realm_emoji_uncached(realm):
d = {}
for row in RealmEmoji.objects.filter(realm=realm):
d[row.name] = row.img_url
return d
def flush_realm_emoji(sender, **kwargs):
realm = kwargs['instance'].realm
cache_set(get_realm_emoji_cache_key(realm),
get_realm_emoji_uncached(realm),
timeout=3600*24*7)
post_save.connect(flush_realm_emoji, sender=RealmEmoji)
post_delete.connect(flush_realm_emoji, sender=RealmEmoji)
class RealmFilter(models.Model):
realm = models.ForeignKey(Realm)
pattern = models.TextField()
url_format_string = models.TextField()
class Meta:
unique_together = ("realm", "pattern")
def __str__(self):
return "<RealmFilter(%s): %s %s>" % (self.realm.domain, self.pattern, self.url_format_string)
def get_realm_filters_cache_key(domain):
return 'all_realm_filters:%s' % (domain,)
# We have a per-process cache to avoid doing 1000 memcached queries during page load
per_request_realm_filters_cache = {}
def realm_filters_for_domain(domain):
domain = domain.lower()
if domain not in per_request_realm_filters_cache:
per_request_realm_filters_cache[domain] = realm_filters_for_domain_memcached(domain)
return per_request_realm_filters_cache[domain]
@cache_with_key(get_realm_filters_cache_key, timeout=3600*24*7)
def realm_filters_for_domain_memcached(domain):
filters = []
for realm_filter in RealmFilter.objects.filter(realm=get_realm(domain)):
filters.append((realm_filter.pattern, realm_filter.url_format_string))
return filters
def all_realm_filters():
filters = defaultdict(list)
for realm_filter in RealmFilter.objects.all():
filters[realm_filter.realm.domain].append((realm_filter.pattern, realm_filter.url_format_string))
return filters
def flush_realm_filter(sender, **kwargs):
realm = kwargs['instance'].realm
cache_delete(get_realm_filters_cache_key(realm.domain))
try:
per_request_realm_filters_cache.pop(realm.domain.lower())
except KeyError:
pass
post_save.connect(flush_realm_filter, sender=RealmFilter)
post_delete.connect(flush_realm_filter, sender=RealmFilter)
class UserProfile(AbstractBaseUser, PermissionsMixin):
# Fields from models.AbstractUser minus last_name and first_name,
# which we don't use; email is modified to make it indexed and unique.
email = models.EmailField(blank=False, db_index=True, unique=True)
is_staff = models.BooleanField(default=False)
is_active = models.BooleanField(default=True)
is_bot = models.BooleanField(default=False)
date_joined = models.DateTimeField(default=timezone.now)
is_mirror_dummy = models.BooleanField(default=False)
bot_owner = models.ForeignKey('self', null=True, on_delete=models.SET_NULL)
USERNAME_FIELD = 'email'
MAX_NAME_LENGTH = 100
# Our custom site-specific fields
full_name = models.CharField(max_length=MAX_NAME_LENGTH)
short_name = models.CharField(max_length=MAX_NAME_LENGTH)
# pointer points to Message.id, NOT UserMessage.id.
pointer = models.IntegerField()
last_pointer_updater = models.CharField(max_length=64)
realm = models.ForeignKey(Realm)
api_key = models.CharField(max_length=32)
### Notifications settings. ###
# Stream notifications.
enable_stream_desktop_notifications = models.BooleanField(default=True)
enable_stream_sounds = models.BooleanField(default=True)
# PM + @-mention notifications.
enable_desktop_notifications = models.BooleanField(default=True)
enable_sounds = models.BooleanField(default=True)
enable_offline_email_notifications = models.BooleanField(default=True)
enable_offline_push_notifications = models.BooleanField(default=True)
enable_digest_emails = models.BooleanField(default=True)
# Old notification field superseded by existence of stream notification
# settings.
default_desktop_notifications = models.BooleanField(default=True)
###
last_reminder = models.DateTimeField(default=timezone.now, null=True)
rate_limits = models.CharField(default="", max_length=100) # comma-separated list of range:max pairs
# Default streams
default_sending_stream = models.ForeignKey('zerver.Stream', null=True, related_name='+')
default_events_register_stream = models.ForeignKey('zerver.Stream', null=True, related_name='+')
default_all_public_streams = models.BooleanField(default=False)
# UI vars
enter_sends = models.NullBooleanField(default=True)
autoscroll_forever = models.BooleanField(default=False)
# Hours to wait before sending another email to a user
EMAIL_REMINDER_WAITPERIOD = 24
# Minutes to wait before warning a bot owner that her bot sent a message
# to a nonexistent stream
BOT_OWNER_STREAM_ALERT_WAITPERIOD = 1
AVATAR_FROM_GRAVATAR = 'G'
AVATAR_FROM_USER = 'U'
AVATAR_FROM_SYSTEM = 'S'
AVATAR_SOURCES = (
(AVATAR_FROM_GRAVATAR, 'Hosted by Gravatar'),
(AVATAR_FROM_USER, 'Uploaded by user'),
(AVATAR_FROM_SYSTEM, 'System generated'),
)
avatar_source = models.CharField(default=AVATAR_FROM_GRAVATAR, choices=AVATAR_SOURCES, max_length=1)
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=ujson.dumps([]))
invites_granted = models.IntegerField(default=0)
invites_used = models.IntegerField(default=0)
alert_words = models.TextField(default=ujson.dumps([])) # json-serialized list of strings
# Contains serialized JSON of the form:
# [["social", "mit"], ["devel", "ios"]]
muted_topics = models.TextField(default=ujson.dumps([]))
objects = UserManager()
def can_admin_user(self, target_user):
"""Returns whether this user has permission to modify target_user"""
if target_user.bot_owner == self:
return True
elif self.has_perm('administer', target_user.realm):
return True
else:
return False
def is_admin(self):
return self.has_perm('administer', self.realm)
@property
def public_streams_disabled(self):
return self.email.lower() == "restricted-user@customer5.invalid"
def last_reminder_tzaware(self):
if self.last_reminder is not None and timezone.is_naive(self.last_reminder):
logging.warning("Loaded a user_profile.last_reminder for user %s that's not tz-aware: %s"
% (self.email, self.last_reminder))
return self.last_reminder.replace(tzinfo=timezone.utc)
return self.last_reminder
def __repr__(self):
return (u"<UserProfile: %s %s>" % (self.email, self.realm)).encode("utf-8")
def __str__(self):
return self.__repr__()
@staticmethod
def emails_from_ids(user_ids):
rows = UserProfile.objects.filter(id__in=user_ids).values('id', 'email')
return {row['id']: row['email'] for row in rows}
def can_create_streams(self):
# Long term this might be an actual DB attribute. Short term and long term, we want
# this to be conceptually a property of the user, although it may actually be administered
# in a more complicated way, like certain realms may allow only admins to create streams.
return True
def receives_offline_notifications(user_profile):
return ((user_profile.enable_offline_email_notifications or
user_profile.enable_offline_push_notifications) and
not user_profile.is_bot)
# Make sure we flush the UserProfile object from our memcached
# whenever we save it.
post_save.connect(flush_user_profile, sender=UserProfile)
class PreregistrationUser(models.Model):
email = models.EmailField()
referred_by = models.ForeignKey(UserProfile, null=True)
streams = models.ManyToManyField('Stream', null=True)
invited_at = models.DateTimeField(auto_now=True)
# status: whether an object has been confirmed.
# if confirmed, set to confirmation.settings.STATUS_ACTIVE
status = models.IntegerField(default=0)
realm = models.ForeignKey(Realm, null=True)
# Deprecated. Drop this table once prod uses PushDeviceToken and the data has
# been copied there.
class AppleDeviceToken(models.Model):
# The token is a unique device-specific token that is
# sent to us from each iOS device, after registering with
# the APNS service
token = models.CharField(max_length=255, unique=True)
last_updated = models.DateTimeField(auto_now=True, default=timezone.now)
# The user who's device this is
user = models.ForeignKey(UserProfile, db_index=True)
class PushDeviceToken(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, unique=True)
last_updated = models.DateTimeField(auto_now=True, default=timezone.now)
# The user who's device this is
user = models.ForeignKey(UserProfile, db_index=True)
class MitUser(models.Model):
email = models.EmailField(unique=True)
# status: whether an object has been confirmed.
# if confirmed, set to confirmation.settings.STATUS_ACTIVE
status = models.IntegerField(default=0)
class Stream(models.Model):
MAX_NAME_LENGTH = 60
name = models.CharField(max_length=MAX_NAME_LENGTH, db_index=True)
realm = models.ForeignKey(Realm, db_index=True)
invite_only = models.NullBooleanField(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=lambda: generate_random_token(32))
description = models.CharField(max_length=1024, default='')
date_created = models.DateTimeField(default=timezone.now)
deactivated = models.BooleanField(default=False)
def __repr__(self):
return (u"<Stream: %s>" % (self.name,)).encode("utf-8")
def __str__(self):
return self.__repr__()
def is_public(self):
if self.realm.domain in ["mit.edu", "customer1.invalid", "customer22.invalid"]:
# These realms predate public streams and all streams are private
return False
return not self.invite_only
class Meta:
unique_together = ("name", "realm")
@classmethod
def create(cls, name, realm):
stream = cls(name=name, realm=realm)
stream.save()
recipient = Recipient.objects.create(type_id=stream.id,
type=Recipient.STREAM)
return (stream, recipient)
def num_subscribers(self):
return Subscription.objects.filter(
recipient__type=Recipient.STREAM,
recipient__type_id=self.id,
user_profile__is_active=True,
active=True
).count()
# This is stream information that is sent to clients
def to_dict(self):
return dict(name=self.name,
stream_id=self.id,
description=self.description,
invite_only=self.invite_only)
post_save.connect(flush_stream, sender=Stream)
post_delete.connect(flush_stream, sender=Stream)
def valid_stream_name(name):
return name != ""
class Recipient(models.Model):
type_id = models.IntegerField(db_index=True)
type = models.PositiveSmallIntegerField(db_index=True)
# Valid types are {personal, stream, huddle}
PERSONAL = 1
STREAM = 2
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):
# Raises KeyError if invalid
return self._type_names[self.type]
def __repr__(self):
display_recipient = get_display_recipient(self)
return (u"<Recipient: %s (%d, %s)>" % (display_recipient, self.type_id, self.type)).encode("utf-8")
class Client(models.Model):
name = models.CharField(max_length=30, db_index=True, unique=True)
get_client_cache = {}
def get_client(name):
if name not in get_client_cache:
result = get_client_memcached(name)
get_client_cache[name] = result
return get_client_cache[name]
def get_client_cache_key(name):
return 'get_client:%s' % (make_safe_digest(name),)
@cache_with_key(get_client_cache_key, timeout=3600*24*7)
def get_client_memcached(name):
(client, _) = Client.objects.get_or_create(name=name)
return client
# get_stream_backend takes either a realm id or a realm
@cache_with_key(get_stream_cache_key, timeout=3600*24*7)
def get_stream_backend(stream_name, realm):
if isinstance(realm, Realm):
realm_id = realm.id
else:
realm_id = realm
return Stream.objects.select_related("realm").get(
name__iexact=stream_name.strip(), realm_id=realm_id)
def get_active_streams(realm):
"""
Return all streams (including invite-only streams) that have not been deactivated.
"""
return Stream.objects.filter(realm=realm, deactivated=False)
# get_stream takes either a realm id or a realm
def get_stream(stream_name, realm):
try:
return get_stream_backend(stream_name, realm)
except Stream.DoesNotExist:
return None
def bulk_get_streams(realm, stream_names):
if isinstance(realm, Realm):
realm_id = realm.id
else:
realm_id = realm
def fetch_streams_by_name(stream_names):
# This should be just
#
# Stream.objects.select_related("realm").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
if len(stream_names) == 0:
return []
upper_list = ", ".join(["UPPER(%s)"] * len(stream_names))
where_clause = "UPPER(zerver_stream.name::text) IN (%s)" % (upper_list,)
return get_active_streams(realm_id).select_related("realm").extra(
where=[where_clause],
params=stream_names)
return generic_bulk_cached_fetch(lambda stream_name: get_stream_cache_key(stream_name, realm),
fetch_streams_by_name,
[stream_name.lower() for stream_name in stream_names],
id_fetcher=lambda stream: stream.name.lower())
def get_recipient_cache_key(type, type_id):
return "get_recipient:%s:%s" % (type, type_id,)
@cache_with_key(get_recipient_cache_key, timeout=3600*24*7)
def get_recipient(type, type_id):
return Recipient.objects.get(type_id=type_id, type=type)
def bulk_get_recipients(type, type_ids):
def cache_key_function(type_id):
return get_recipient_cache_key(type, type_id)
def query_function(type_ids):
return Recipient.objects.filter(type=type, type_id__in=type_ids)
return generic_bulk_cached_fetch(cache_key_function, query_function, type_ids,
id_fetcher=lambda recipient: recipient.type_id)
# NB: This function is currently unused, but may come in handy.
def linebreak(string):
return string.replace('\n\n', '<p/>').replace('\n', '<br/>')
def extract_message_dict(message_str):
return ujson.loads(zlib.decompress(message_str))
def stringify_message_dict(message_dict):
return zlib.compress(ujson.dumps(message_dict))
def to_dict_cache_key_id(message_id, apply_markdown):
return 'message_dict:%d:%d' % (message_id, apply_markdown)
def to_dict_cache_key(message, apply_markdown):
return to_dict_cache_key_id(message.id, apply_markdown)
class Message(models.Model):
sender = models.ForeignKey(UserProfile)
recipient = models.ForeignKey(Recipient)
subject = models.CharField(max_length=MAX_SUBJECT_LENGTH, db_index=True)
content = models.TextField()
rendered_content = models.TextField(null=True)
rendered_content_version = models.IntegerField(null=True)
pub_date = models.DateTimeField('date published', db_index=True)
sending_client = models.ForeignKey(Client)
last_edit_time = models.DateTimeField(null=True)
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)
def __repr__(self):
display_recipient = get_display_recipient(self.recipient)
return (u"<Message: %s / %s / %r>" % (display_recipient, self.subject, self.sender)).encode("utf-8")
def __str__(self):
return self.__repr__()
def get_realm(self):
return self.sender.realm
def render_markdown(self, content, domain=None):
"""Return HTML for given markdown. Bugdown may add properties to the
message object such as `mentions_user_ids` and `mentions_wildcard`.
These are only on this Django object and are not saved in the
database.
"""
global bugdown
if bugdown is None:
from zerver.lib import bugdown
self.mentions_wildcard = False
self.is_me_message = False
self.mentions_user_ids = set()
self.user_ids_with_alert_words = set()
if not domain:
domain = self.sender.realm.domain
if self.sending_client.name == "zephyr_mirror" and domain == "mit.edu":
# Use slightly customized Markdown processor for content
# delivered via zephyr_mirror
domain = "mit.edu/zephyr_mirror"
rendered_content = bugdown.convert(content, domain, self)
# For /me syntax, JS can detect the is_me_message flag
# and do special rendering.
if content.startswith('/me ') and '\n' not in content:
if rendered_content.startswith('<p>') and rendered_content.endswith('</p>'):
self.is_me_message = True
return rendered_content
def set_rendered_content(self, rendered_content, save = False):
"""Set the content on the message.
"""
global bugdown
if bugdown is None:
from zerver.lib import bugdown
self.rendered_content = rendered_content
self.rendered_content_version = bugdown.version
if self.rendered_content is not None:
if save:
self.save_rendered_content()
return True
else:
return False
def save_rendered_content(self):
self.save(update_fields=["rendered_content", "rendered_content_version"])
def maybe_render_content(self, domain, save = False):
"""Render the markdown if there is no existing rendered_content"""
global bugdown
if bugdown is None:
from zerver.lib import bugdown
if Message.need_to_render_content(self.rendered_content, self.rendered_content_version):
return self.set_rendered_content(self.render_markdown(self.content, domain), save)
else:
return True
@staticmethod
def need_to_render_content(rendered_content, rendered_content_version):
return rendered_content_version < bugdown.version or rendered_content is None
def to_dict(self, apply_markdown):
return extract_message_dict(self.to_dict_json(apply_markdown))
@cache_with_key(to_dict_cache_key, timeout=3600*24)
def to_dict_json(self, apply_markdown):
return stringify_message_dict(self.to_dict_uncached(apply_markdown))
def to_dict_uncached(self, apply_markdown):
return Message.build_message_dict(
apply_markdown = apply_markdown,
message = self,
message_id = self.id,
last_edit_time = self.last_edit_time,
edit_history = self.edit_history,
content = self.content,
subject = self.subject,
pub_date = self.pub_date,
rendered_content = self.rendered_content,
rendered_content_version = self.rendered_content_version,
sender_id = self.sender.id,
sender_email = self.sender.email,
sender_realm_domain = self.sender.realm.domain,
sender_full_name = self.sender.full_name,
sender_short_name = self.sender.short_name,
sender_avatar_source = self.sender.avatar_source,
sender_is_mirror_dummy = self.sender.is_mirror_dummy,
sending_client_name = self.sending_client.name,
recipient_id = self.recipient.id,
recipient_type = self.recipient.type,
recipient_type_id = self.recipient.type_id,
)
@staticmethod
def build_dict_from_raw_db_row(row, apply_markdown):
'''
row is a row from a .values() call, and it needs to have
all the relevant fields populated
'''
return Message.build_message_dict(
apply_markdown = apply_markdown,
message = None,
message_id = row['id'],
last_edit_time = row['last_edit_time'],
edit_history = row['edit_history'],
content = row['content'],
subject = row['subject'],
pub_date = row['pub_date'],
rendered_content = row['rendered_content'],
rendered_content_version = row['rendered_content_version'],
sender_id = row['sender_id'],
sender_email = row['sender__email'],
sender_realm_domain = row['sender__realm__domain'],
sender_full_name = row['sender__full_name'],
sender_short_name = row['sender__short_name'],
sender_avatar_source = row['sender__avatar_source'],
sender_is_mirror_dummy = row['sender__is_mirror_dummy'],
sending_client_name = row['sending_client__name'],
recipient_id = row['recipient_id'],
recipient_type = row['recipient__type'],
recipient_type_id = row['recipient__type_id'],
)
@staticmethod
def build_message_dict(
apply_markdown,
message,
message_id,
last_edit_time,
edit_history,
content,
subject,
pub_date,
rendered_content,
rendered_content_version,
sender_id,
sender_email,
sender_realm_domain,
sender_full_name,
sender_short_name,
sender_avatar_source,
sender_is_mirror_dummy,
sending_client_name,
recipient_id,
recipient_type,
recipient_type_id,
):
global bugdown
if bugdown is None:
from zerver.lib import bugdown
avatar_url = get_avatar_url(sender_avatar_source, sender_email)
display_recipient = get_display_recipient_by_id(
recipient_id,
recipient_type,
recipient_type_id
)
if recipient_type == Recipient.STREAM:
display_type = "stream"
elif recipient_type in (Recipient.HUDDLE, Recipient.PERSONAL):
display_type = "private"
if len(display_recipient) == 1:
# add the sender in if this isn't a message between
# someone and his self, preserving ordering
recip = {'email': sender_email,
'domain': sender_realm_domain,
'full_name': sender_full_name,
'short_name': sender_short_name,
'id': sender_id,
'is_mirror_dummy': sender_is_mirror_dummy}
if recip['email'] < display_recipient[0]['email']:
display_recipient = [recip, display_recipient[0]]
elif recip['email'] > display_recipient[0]['email']:
display_recipient = [display_recipient[0], recip]
obj = dict(
id = message_id,
sender_email = sender_email,
sender_full_name = sender_full_name,
sender_short_name = sender_short_name,
sender_domain = sender_realm_domain,
sender_id = sender_id,
type = display_type,
display_recipient = display_recipient,
recipient_id = recipient_id,
subject = subject,
timestamp = datetime_to_timestamp(pub_date),
gravatar_hash = gravatar_hash(sender_email), # Deprecated June 2013
avatar_url = avatar_url,
client = sending_client_name)
obj['subject_links'] = bugdown.subject_links(sender_realm_domain.lower(), subject)
if last_edit_time != None:
obj['last_edit_timestamp'] = datetime_to_timestamp(last_edit_time)
obj['edit_history'] = ujson.loads(edit_history)
if apply_markdown:
if Message.need_to_render_content(rendered_content, rendered_content_version):
if message is None:
# We really shouldn't be rendering objects in this method, but there is
# a scenario where we upgrade the version of bugdown and fail to run
# management commands to re-render historical messages, and then we
# need to have side effects. This method is optimized to not need full
# blown ORM objects, but the bugdown renderer is unfortunately highly
# coupled to Message, and we also need to persist the new rendered content.
# If we don't have a message object passed in, we get one here. The cost
# of going to the DB here should be overshadowed by the cost of rendering
# and updating the row.
message = Message.objects.select_related().get(id=message_id)
# It's unfortunate that we need to have side effects on the message
# in some cases.
rendered_content = message.render_markdown(content, sender_realm_domain)
message.set_rendered_content(rendered_content, True)
if rendered_content is not None:
obj['content'] = rendered_content
else:
obj['content'] = '<p>[Zulip note: Sorry, we could not understand the formatting of your message]</p>'
obj['content_type'] = 'text/html'
else:
obj['content'] = content
obj['content_type'] = 'text/x-markdown'
return obj
def to_log_dict(self):
return dict(
id = self.id,
sender_email = self.sender.email,
sender_domain = self.sender.realm.domain,
sender_full_name = self.sender.full_name,
sender_short_name = self.sender.short_name,
sending_client = self.sending_client.name,
type = self.recipient.type_name(),
recipient = get_display_recipient(self.recipient),
subject = self.subject,
content = self.content,
timestamp = datetime_to_timestamp(self.pub_date))
@staticmethod
def get_raw_db_rows(needed_ids):
# This is a special purpose function optimized for
# callers like get_old_messages_backend().
fields = [
'id',
'subject',
'pub_date',
'last_edit_time',
'edit_history',
'content',
'rendered_content',
'rendered_content_version',
'recipient_id',
'recipient__type',
'recipient__type_id',
'sender_id',
'sending_client__name',
'sender__email',
'sender__full_name',
'sender__short_name',
'sender__realm__id',
'sender__realm__domain',
'sender__avatar_source',
'sender__is_mirror_dummy',
]
return Message.objects.filter(id__in=needed_ids).values(*fields)
@classmethod
def remove_unreachable(cls):
"""Remove all Messages that are not referred to by any UserMessage."""
cls.objects.exclude(id__in = UserMessage.objects.values('message_id')).delete()
def sent_by_human(self):
sending_client = self.sending_client.name.lower()
return (sending_client in ('zulipandroid', 'zulipios', 'zulipdesktop',
'website', 'ios', 'android')) or \
('desktop app' in sending_client)
@staticmethod
def content_has_attachment(content):
return re.search('[/\-]user[\-_]uploads[/\.-]', content)
@staticmethod
def content_has_image(content):
return bool(re.search('[/\-]user[\-_]uploads[/\.-]\S+\.(bmp|gif|jpg|jpeg|png|webp)', content, re.IGNORECASE))
@staticmethod
def content_has_link(content):
return 'http://' in content or 'https://' in content or '/user_uploads' in content
def update_calculated_fields(self):
# TODO: rendered_content could also be considered a calculated field
content = self.content
self.has_attachment = bool(Message.content_has_attachment(content))
self.has_image = bool(Message.content_has_image(content))
self.has_link = bool(Message.content_has_link(content))
@receiver(pre_save, sender=Message)
def pre_save_message(sender, **kwargs):
if kwargs['update_fields'] is None or "content" in kwargs['update_fields']:
message = kwargs['instance']
message.update_calculated_fields()
def get_context_for_message(message):
return Message.objects.filter(
recipient_id=message.recipient_id,
subject=message.subject,
id__lt=message.id,
pub_date__gt=message.pub_date - timedelta(minutes=5),
).order_by('-id')[:5]
class UserMessage(models.Model):
user_profile = models.ForeignKey(UserProfile)
message = models.ForeignKey(Message)
# We're not using the archived field for now, but create it anyway
# since this table will be an unpleasant one to do schema changes
# on later
ALL_FLAGS = ['read', 'starred', 'collapsed', 'mentioned', 'wildcard_mentioned',
'summarize_in_home', 'summarize_in_stream', 'force_expand', 'force_collapse',
'has_alert_word', "historical", 'is_me_message']
flags = BitField(flags=ALL_FLAGS, default=0)
class Meta:
unique_together = ("user_profile", "message")
def __repr__(self):
display_recipient = get_display_recipient(self.message.recipient)
return (u"<UserMessage: %s / %s (%s)>" % (display_recipient, self.user_profile.email, self.flags_list())).encode("utf-8")
def flags_list(self):
return [flag for flag in self.flags.keys() if getattr(self.flags, flag).is_set]
def parse_usermessage_flags(val):
flags = []
mask = 1
for flag in UserMessage.ALL_FLAGS:
if val & mask:
flags.append(flag)
mask <<= 1
return flags
class Subscription(models.Model):
user_profile = models.ForeignKey(UserProfile)
recipient = models.ForeignKey(Recipient)
active = models.BooleanField(default=True)
in_home_view = models.NullBooleanField(default=True)
DEFAULT_STREAM_COLOR = "#c2c2c2"
color = models.CharField(max_length=10, default=DEFAULT_STREAM_COLOR)
desktop_notifications = models.BooleanField(default=True)
audible_notifications = models.BooleanField(default=True)
# Combination desktop + audible notifications superseded by the
# above.
notifications = models.BooleanField(default=False)
class Meta:
unique_together = ("user_profile", "recipient")
def __repr__(self):
return (u"<Subscription: %r -> %s>" % (self.user_profile, self.recipient)).encode("utf-8")
def __str__(self):
return self.__repr__()
@cache_with_key(user_profile_by_id_cache_key, timeout=3600*24*7)
def get_user_profile_by_id(uid):
return UserProfile.objects.select_related().get(id=uid)
@cache_with_key(user_profile_by_email_cache_key, timeout=3600*24*7)
def get_user_profile_by_email(email):
return UserProfile.objects.select_related().get(email__iexact=email.strip())
@cache_with_key(active_user_dicts_in_realm_cache_key, timeout=3600*24*7)
def get_active_user_dicts_in_realm(realm):
return UserProfile.objects.filter(realm=realm, is_active=True) \
.values('id', 'full_name', 'short_name', 'email', 'is_bot')
@cache_with_key(active_bot_dicts_in_realm_cache_key, timeout=3600*24*7)
def get_active_bot_dicts_in_realm(realm):
return UserProfile.objects.filter(realm=realm, is_active=True, is_bot=True) \
.values('id', 'full_name', 'short_name',
'email', 'default_sending_stream__name',
'default_events_register_stream__name',
'default_all_public_streams', 'api_key',
'bot_owner__email', 'avatar_source') \
.select_related('default_sending_stream',
'default_events_register_stream',
'bot_owner')
def get_prereg_user_by_email(email):
# A user can be invited many times, so only return the result of the latest
# invite.
return PreregistrationUser.objects.filter(email__iexact=email.strip()).latest("invited_at")
class Huddle(models.Model):
# TODO: We should consider whether using
# CommaSeparatedIntegerField would be better.
huddle_hash = models.CharField(max_length=40, db_index=True, unique=True)
def get_huddle_hash(id_list):
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):
return "huddle_by_hash:%s" % (huddle_hash,)
def get_huddle(id_list):
huddle_hash = get_huddle_hash(id_list)
return get_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_huddle_backend(huddle_hash, id_list):
(huddle, created) = Huddle.objects.get_or_create(huddle_hash=huddle_hash)
if created:
with transaction.commit_on_success():
recipient = Recipient.objects.create(type_id=huddle.id,
type=Recipient.HUDDLE)
subs_to_create = [Subscription(recipient=recipient,
user_profile=get_user_profile_by_id(user_profile_id))
for user_profile_id in id_list]
Subscription.objects.bulk_create(subs_to_create)
return huddle
def get_realm(domain):
if not domain:
return None
try:
return Realm.objects.get(domain__iexact=domain.strip())
except Realm.DoesNotExist:
return None
def clear_database():
pylibmc.Client(['127.0.0.1']).flush_all()
for model in [Message, Stream, UserProfile, Recipient,
Realm, Subscription, Huddle, UserMessage, Client,
DefaultStream]:
model.objects.all().delete()
Session.objects.all().delete()
class UserActivity(models.Model):
user_profile = models.ForeignKey(UserProfile)
client = models.ForeignKey(Client)
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):
user_profile = models.ForeignKey(UserProfile)
start = models.DateTimeField('start time', db_index=True)
end = models.DateTimeField('end time', db_index=True)
class UserPresence(models.Model):
user_profile = models.ForeignKey(UserProfile)
client = models.ForeignKey(Client)
# Valid statuses
ACTIVE = 1
IDLE = 2
timestamp = models.DateTimeField('presence changed')
status = models.PositiveSmallIntegerField(default=ACTIVE)
@staticmethod
def status_to_string(status):
if status == UserPresence.ACTIVE:
return 'active'
elif status == UserPresence.IDLE:
return 'idle'
@staticmethod
def get_status_dict_by_realm(realm_id):
user_statuses = defaultdict(dict)
query = UserPresence.objects.filter(
user_profile__realm_id=realm_id,
user_profile__is_active=True,
user_profile__is_bot=False
).values(
'client__name',
'status',
'timestamp',
'user_profile__email',
'user_profile__id',
'user_profile__enable_offline_push_notifications',
'user_profile__is_mirror_dummy',
)
mobile_user_ids = [row['user'] for row in PushDeviceToken.objects.filter(
user__realm_id=1,
user__is_active=True,
user__is_bot=False,
).distinct("user").values("user")]
for row in query:
info = UserPresence.to_presence_dict(
client_name=row['client__name'],
status=row['status'],
timestamp=row['timestamp'],
push_enabled=row['user_profile__enable_offline_push_notifications'],
has_push_devices=row['user_profile__id'] in mobile_user_ids,
is_mirror_dummy=row['user_profile__is_mirror_dummy'],
)
user_statuses[row['user_profile__email']][row['client__name']] = info
return user_statuses
@staticmethod
def to_presence_dict(client_name=None, status=None, timestamp=None, push_enabled=None,
has_push_devices=None, is_mirror_dummy=None):
presence_val = UserPresence.status_to_string(status)
timestamp = datetime_to_timestamp(timestamp)
return dict(
client=client_name,
status=presence_val,
timestamp=timestamp,
pushable=(push_enabled and has_push_devices),
)
def to_dict(self):
return UserPresence.to_presence_dict(
client_name=self.client.name,
status=self.status,
timestamp=self.timestamp
)
@staticmethod
def status_from_string(status):
if status == 'active':
status_val = UserPresence.ACTIVE
elif status == 'idle':
status_val = UserPresence.IDLE
else:
status_val = None
return status_val
class Meta:
unique_together = ("user_profile", "client")
class DefaultStream(models.Model):
realm = models.ForeignKey(Realm)
stream = models.ForeignKey(Stream)
class Meta:
unique_together = ("realm", "stream")
# FIXME: The foreign key relationship here is backwards.
#
# We can't easily get a list of streams and their associated colors (if any) in
# a single query. See zerver.views.gather_subscriptions for an example.
#
# We should change things around so that is possible. Probably this should
# just be a column on Subscription.
class StreamColor(models.Model):
DEFAULT_STREAM_COLOR = "#c2c2c2"
subscription = models.ForeignKey(Subscription)
color = models.CharField(max_length=10)
class Referral(models.Model):
user_profile = models.ForeignKey(UserProfile)
email = models.EmailField(blank=False, null=False)
timestamp = models.DateTimeField(auto_now_add=True, null=False)
# This table only gets used on Zulip Enterprise instances
# For reasons of deliverability (and sending from multiple email addresses),
# we will still send from mandrill when we send things from the (staging.)zulip.com install
class ScheduledJob(models.Model):
scheduled_timestamp = models.DateTimeField(auto_now_add=False, null=False)
type = models.PositiveSmallIntegerField()
# Valid types are {email}
# for EMAIL, filter_string is recipient_email
EMAIL = 1
# JSON representation of the job's data. Be careful, as we are not relying on Django to do validation
data = models.TextField()
# Kind if like a ForeignKey, but table is determined by type.
filter_id = models.IntegerField(null=True)
filter_string = models.CharField(max_length=100)
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