mirror of https://github.com/zulip/zulip.git
479 lines
21 KiB
Python
479 lines
21 KiB
Python
from __future__ import absolute_import
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from typing import Any
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from django.conf import settings
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from django.db import transaction
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from django.views.decorators.csrf import csrf_exempt
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from zerver.decorator import authenticated_json_post_view, \
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has_request_variables, authenticated_json_view, \
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JsonableError, get_user_profile_by_email, REQ, require_realm_admin
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from zerver.lib.actions import bulk_remove_subscriptions, \
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do_change_subscription_property, internal_prep_message, \
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create_stream_if_needed, gather_subscriptions, subscribed_to_stream, \
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bulk_add_subscriptions, do_send_messages, get_subscriber_emails, do_rename_stream, \
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do_deactivate_stream, do_make_stream_public, do_add_default_stream, \
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do_change_stream_description, do_get_streams, do_make_stream_private, \
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do_remove_default_stream
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from zerver.lib.response import json_success, json_error, json_response
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from zerver.lib.validator import check_string, check_list, check_dict, \
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check_bool, check_variable_type
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from zerver.models import UserProfile, Stream, Subscription, \
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Recipient, get_recipient, get_stream, bulk_get_streams, \
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bulk_get_recipients, valid_stream_name, get_active_user_dicts_in_realm
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from collections import defaultdict
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import ujson
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from six.moves import urllib
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from zerver.lib.rest import rest_dispatch as _rest_dispatch
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import six
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rest_dispatch = csrf_exempt((lambda request, *args, **kwargs: _rest_dispatch(request, globals(), *args, **kwargs)))
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def list_to_streams(streams_raw, user_profile, autocreate=False, invite_only=False):
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"""Converts plaintext stream names to a list of Streams, validating input in the process
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For each stream name, we validate it to ensure it meets our
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requirements for a proper stream name: that is, that it is shorter
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than Stream.MAX_NAME_LENGTH characters and passes
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valid_stream_name.
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This function in autocreate mode should be atomic: either an exception will be raised
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during a precheck, or all the streams specified will have been created if applicable.
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@param streams_raw The list of stream names to process
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@param user_profile The user for whom we are retreiving the streams
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@param autocreate Whether we should create streams if they don't already exist
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@param invite_only Whether newly created streams should have the invite_only bit set
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"""
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existing_streams = []
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created_streams = []
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# Validate all streams, getting extant ones, then get-or-creating the rest.
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stream_set = set(stream_name.strip() for stream_name in streams_raw)
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rejects = []
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for stream_name in stream_set:
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if len(stream_name) > Stream.MAX_NAME_LENGTH:
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raise JsonableError("Stream name (%s) too long." % (stream_name,))
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if not valid_stream_name(stream_name):
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raise JsonableError("Invalid stream name (%s)." % (stream_name,))
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existing_stream_map = bulk_get_streams(user_profile.realm, stream_set)
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for stream_name in stream_set:
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stream = existing_stream_map.get(stream_name.lower())
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if stream is None:
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rejects.append(stream_name)
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else:
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existing_streams.append(stream)
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if autocreate:
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for stream_name in rejects:
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stream, created = create_stream_if_needed(user_profile.realm,
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stream_name,
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invite_only=invite_only)
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if created:
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created_streams.append(stream)
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else:
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existing_streams.append(stream)
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elif rejects:
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raise JsonableError("Stream(s) (%s) do not exist" % ", ".join(rejects))
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return existing_streams, created_streams
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class PrincipalError(JsonableError):
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def __init__(self, principal, status_code=403):
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self.principal = principal
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self.status_code = status_code
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def to_json_error_msg(self):
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return ("User not authorized to execute queries on behalf of '%s'"
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% (self.principal,))
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def principal_to_user_profile(agent, principal):
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principal_doesnt_exist = False
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try:
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principal_user_profile = get_user_profile_by_email(principal)
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except UserProfile.DoesNotExist:
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principal_doesnt_exist = True
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if (principal_doesnt_exist
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or agent.realm != principal_user_profile.realm):
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# We have to make sure we don't leak information about which users
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# are registered for Zulip in a different realm. We could do
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# something a little more clever and check the domain part of the
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# principal to maybe give a better error message
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raise PrincipalError(principal)
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return principal_user_profile
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@require_realm_admin
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def deactivate_stream_backend(request, user_profile, stream_name):
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target = get_stream(stream_name, user_profile.realm)
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if not target:
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return json_error('No such stream name')
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if target.invite_only and not subscribed_to_stream(user_profile, target):
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return json_error('Cannot administer invite-only streams this way')
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do_deactivate_stream(target)
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return json_success({})
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@require_realm_admin
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@has_request_variables
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def add_default_stream(request, user_profile, stream_name=REQ):
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return json_success(do_add_default_stream(user_profile.realm, stream_name))
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@require_realm_admin
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@has_request_variables
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def remove_default_stream(request, user_profile, stream_name=REQ):
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return json_success(do_remove_default_stream(user_profile.realm, stream_name))
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@authenticated_json_post_view
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@require_realm_admin
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@has_request_variables
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def json_rename_stream(request, user_profile, old_name=REQ, new_name=REQ):
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return json_success(do_rename_stream(user_profile.realm, old_name, new_name))
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@authenticated_json_post_view
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@require_realm_admin
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@has_request_variables
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def json_make_stream_public(request, user_profile, stream_name=REQ):
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return json_success(do_make_stream_public(user_profile, user_profile.realm, stream_name))
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@authenticated_json_post_view
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@require_realm_admin
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@has_request_variables
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def json_make_stream_private(request, user_profile, stream_name=REQ):
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return json_success(do_make_stream_private(user_profile.realm, stream_name))
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@require_realm_admin
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@has_request_variables
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def update_stream_backend(request, user_profile, stream_name,
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description=REQ(validator=check_string, default=None)):
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if description is not None:
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do_change_stream_description(user_profile.realm, stream_name, description)
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return json_success({})
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def list_subscriptions_backend(request, user_profile):
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return json_success({"subscriptions": gather_subscriptions(user_profile)[0]})
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@transaction.atomic
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@has_request_variables
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def update_subscriptions_backend(request, user_profile,
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delete=REQ(validator=check_list(check_string), default=[]),
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add=REQ(validator=check_list(check_dict([['name', check_string]])), default=[])):
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if not add and not delete:
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return json_error('Nothing to do. Specify at least one of "add" or "delete".')
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json_dict = {} # type: Dict[str, Any]
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for method, items in ((add_subscriptions_backend, add), (remove_subscriptions_backend, delete)):
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response = method(request, user_profile, streams_raw=items)
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if response.status_code != 200:
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transaction.rollback()
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return response
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json_dict.update(ujson.loads(response.content))
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return json_success(json_dict)
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@authenticated_json_post_view
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def json_remove_subscriptions(request, user_profile):
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return remove_subscriptions_backend(request, user_profile)
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@has_request_variables
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def remove_subscriptions_backend(request, user_profile,
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streams_raw = REQ("subscriptions", validator=check_list(check_string)),
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principals = REQ(validator=check_list(check_string), default=None)):
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removing_someone_else = principals and \
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set(principals) != set((user_profile.email,))
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if removing_someone_else and not user_profile.is_realm_admin:
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# You can only unsubscribe other people from a stream if you are a realm
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# admin.
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return json_error("This action requires administrative rights")
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streams, _ = list_to_streams(streams_raw, user_profile)
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for stream in streams:
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if removing_someone_else and stream.invite_only and \
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not subscribed_to_stream(user_profile, stream):
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# Even as an admin, you can't remove other people from an
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# invite-only stream you're not on.
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return json_error("Cannot administer invite-only streams this way")
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if principals:
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people_to_unsub = set(principal_to_user_profile(
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user_profile, principal) for principal in principals)
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else:
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people_to_unsub = set([user_profile])
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result = dict(removed=[], not_subscribed=[]) # type: Dict[str, List[str]]
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(removed, not_subscribed) = bulk_remove_subscriptions(people_to_unsub, streams)
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for (subscriber, stream) in removed:
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result["removed"].append(stream.name)
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for (subscriber, stream) in not_subscribed:
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result["not_subscribed"].append(stream.name)
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return json_success(result)
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def filter_stream_authorization(user_profile, streams):
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streams_subscribed = set()
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recipients_map = bulk_get_recipients(Recipient.STREAM, [stream.id for stream in streams])
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subs = Subscription.objects.filter(user_profile=user_profile,
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recipient__in=list(recipients_map.values()),
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active=True)
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for sub in subs:
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streams_subscribed.add(sub.recipient.type_id)
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unauthorized_streams = []
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for stream in streams:
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# The user is authorized for his own streams
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if stream.id in streams_subscribed:
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continue
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# The user is not authorized for invite_only streams
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if stream.invite_only:
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unauthorized_streams.append(stream)
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streams = [stream for stream in streams if
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stream.id not in set(stream.id for stream in unauthorized_streams)]
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return streams, unauthorized_streams
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def stream_link(stream_name):
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"Escapes a stream name to make a #narrow/stream/stream_name link"
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return "#narrow/stream/%s" % (urllib.parse.quote(stream_name.encode('utf-8')),)
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def stream_button(stream_name):
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stream_name = stream_name.replace('\\', '\\\\')
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stream_name = stream_name.replace(')', '\\)')
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return '!_stream_subscribe_button(%s)' % (stream_name,)
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@has_request_variables
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def add_subscriptions_backend(request, user_profile,
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streams_raw = REQ("subscriptions",
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validator=check_list(check_dict([['name', check_string]]))),
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invite_only = REQ(validator=check_bool, default=False),
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announce = REQ(validator=check_bool, default=False),
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principals = REQ(validator=check_list(check_string), default=None),
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authorization_errors_fatal = REQ(validator=check_bool, default=True)):
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if not user_profile.can_create_streams():
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return json_error('User cannot create streams.')
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stream_names = []
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for stream in streams_raw:
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stream_name = stream["name"].strip()
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if len(stream_name) > Stream.MAX_NAME_LENGTH:
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return json_error("Stream name (%s) too long." % (stream_name,))
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if not valid_stream_name(stream_name):
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return json_error("Invalid stream name (%s)." % (stream_name,))
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stream_names.append(stream_name)
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existing_streams, created_streams = \
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list_to_streams(stream_names, user_profile, autocreate=True, invite_only=invite_only)
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authorized_streams, unauthorized_streams = \
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filter_stream_authorization(user_profile, existing_streams)
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if len(unauthorized_streams) > 0 and authorization_errors_fatal:
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return json_error("Unable to access stream (%s)." % unauthorized_streams[0].name)
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# Newly created streams are also authorized for the creator
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streams = authorized_streams + created_streams
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if principals is not None:
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if user_profile.realm.domain == 'mit.edu' and not all(stream.invite_only for stream in streams):
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return json_error("You can only invite other mit.edu users to invite-only streams.")
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subscribers = set(principal_to_user_profile(user_profile, principal) for principal in principals)
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else:
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subscribers = set([user_profile])
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(subscribed, already_subscribed) = bulk_add_subscriptions(streams, subscribers)
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result = dict(subscribed=defaultdict(list), already_subscribed=defaultdict(list)) # type: Dict[str, Any]
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for (subscriber, stream) in subscribed:
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result["subscribed"][subscriber.email].append(stream.name)
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for (subscriber, stream) in already_subscribed:
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result["already_subscribed"][subscriber.email].append(stream.name)
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private_streams = dict((stream.name, stream.invite_only) for stream in streams)
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bots = dict((subscriber.email, subscriber.is_bot) for subscriber in subscribers)
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# Inform the user if someone else subscribed them to stuff,
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# or if a new stream was created with the "announce" option.
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notifications = []
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if principals and result["subscribed"]:
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for email, subscriptions in six.iteritems(result["subscribed"]):
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if email == user_profile.email:
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# Don't send a Zulip if you invited yourself.
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continue
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if bots[email]:
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# Don't send invitation Zulips to bots
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continue
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if len(subscriptions) == 1:
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msg = ("Hi there! We thought you'd like to know that %s just "
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"subscribed you to the%s stream [%s](%s)."
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% (user_profile.full_name,
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" **invite-only**" if private_streams[subscriptions[0]] else "",
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subscriptions[0],
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stream_link(subscriptions[0]),
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))
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else:
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msg = ("Hi there! We thought you'd like to know that %s just "
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"subscribed you to the following streams: \n\n"
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% (user_profile.full_name,))
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for stream in subscriptions:
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msg += "* [%s](%s)%s\n" % (
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stream,
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stream_link(stream),
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" (**invite-only**)" if private_streams[stream] else "")
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if len([s for s in subscriptions if not private_streams[s]]) > 0:
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msg += "\nYou can see historical content on a non-invite-only stream by narrowing to it."
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notifications.append(internal_prep_message(settings.NOTIFICATION_BOT,
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"private", email, "", msg))
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if announce and len(created_streams) > 0:
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notifications_stream = user_profile.realm.notifications_stream
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if notifications_stream is not None:
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if len(created_streams) > 1:
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stream_msg = "the following streams: %s" % \
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(", ".join('`%s`' % (s.name,) for s in created_streams),)
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else:
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stream_msg = "a new stream `%s`" % (created_streams[0].name)
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stream_buttons = ' '.join(stream_button(s.name) for s in created_streams)
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msg = ("%s just created %s. %s" % (user_profile.full_name,
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stream_msg, stream_buttons))
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notifications.append(internal_prep_message(settings.NOTIFICATION_BOT,
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"stream",
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notifications_stream.name, "Streams", msg,
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realm=notifications_stream.realm))
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else:
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msg = ("Hi there! %s just created a new stream '%s'. %s"
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% (user_profile.full_name, created_streams[0].name, stream_button(created_streams[0].name)))
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for realm_user_dict in get_active_user_dicts_in_realm(user_profile.realm):
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# Don't announce to yourself or to people you explicitly added
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# (who will get the notification above instead).
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if realm_user_dict['email'] in principals or realm_user_dict['email'] == user_profile.email:
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continue
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notifications.append(internal_prep_message(settings.NOTIFICATION_BOT,
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"private",
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realm_user_dict['email'], "", msg))
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if len(notifications) > 0:
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do_send_messages(notifications)
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result["subscribed"] = dict(result["subscribed"])
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result["already_subscribed"] = dict(result["already_subscribed"])
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if not authorization_errors_fatal:
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result["unauthorized"] = [stream.name for stream in unauthorized_streams]
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return json_success(result)
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@has_request_variables
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def get_subscribers_backend(request, user_profile, stream_name=REQ('stream')):
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stream = get_stream(stream_name, user_profile.realm)
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if stream is None:
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raise JsonableError("Stream does not exist: %s" % (stream_name,))
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subscribers = get_subscriber_emails(stream, user_profile)
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return json_success({'subscribers': subscribers})
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@authenticated_json_post_view
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def json_get_subscribers(request, user_profile):
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return get_subscribers_backend(request, user_profile)
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# By default, lists all streams that the user has access to --
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# i.e. public streams plus invite-only streams that the user is on
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@has_request_variables
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def get_streams_backend(request, user_profile,
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include_public=REQ(validator=check_bool, default=True),
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include_subscribed=REQ(validator=check_bool, default=True),
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include_all_active=REQ(validator=check_bool, default=False)):
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streams = do_get_streams(user_profile, include_public, include_subscribed,
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include_all_active)
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return json_success({"streams": streams})
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@authenticated_json_post_view
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@has_request_variables
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def json_stream_exists(request, user_profile, stream=REQ,
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autosubscribe=REQ(default=False)):
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return stream_exists_backend(request, user_profile, stream, autosubscribe)
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def stream_exists_backend(request, user_profile, stream_name, autosubscribe):
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if not valid_stream_name(stream_name):
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return json_error("Invalid characters in stream name")
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stream = get_stream(stream_name, user_profile.realm)
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result = {"exists": bool(stream)}
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if stream is not None:
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recipient = get_recipient(Recipient.STREAM, stream.id)
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if autosubscribe:
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bulk_add_subscriptions([stream], [user_profile])
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result["subscribed"] = Subscription.objects.filter(user_profile=user_profile,
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recipient=recipient,
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active=True).exists()
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return json_success(result) # results are ignored for HEAD requests
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return json_response(data=result, status=404)
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def get_subscription_or_die(stream_name, user_profile):
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stream = get_stream(stream_name, user_profile.realm)
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if not stream:
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raise JsonableError("Invalid stream %s" % (stream.name,))
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recipient = get_recipient(Recipient.STREAM, stream.id)
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subscription = Subscription.objects.filter(user_profile=user_profile,
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recipient=recipient, active=True)
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if not subscription.exists():
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raise JsonableError("Not subscribed to stream %s" % (stream_name,))
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return subscription
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@authenticated_json_view
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@has_request_variables
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def json_subscription_property(request, user_profile, subscription_data=REQ(
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validator=check_list(
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check_dict([["stream", check_string],
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["property", check_string],
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["value", check_variable_type(
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|
[check_string, check_bool])]])))):
|
|
"""
|
|
This is the entry point to changing subscription properties. This
|
|
is a bulk endpoint: requestors always provide a subscription_data
|
|
list containing dictionaries for each stream of interest.
|
|
|
|
Requests are of the form:
|
|
|
|
[{"stream": "devel", "property": "in_home_view", "value": False},
|
|
{"stream": "devel", "property": "color", "value": "#c2c2c2"}]
|
|
"""
|
|
if request.method != "POST":
|
|
return json_error("Invalid verb")
|
|
|
|
property_converters = {"color": check_string, "in_home_view": check_bool,
|
|
"desktop_notifications": check_bool,
|
|
"audible_notifications": check_bool}
|
|
response_data = []
|
|
|
|
for change in subscription_data:
|
|
stream_name = change["stream"]
|
|
property = change["property"]
|
|
value = change["value"]
|
|
|
|
if property not in property_converters:
|
|
return json_error("Unknown subscription property: %s" % (property,))
|
|
|
|
sub = get_subscription_or_die(stream_name, user_profile)[0]
|
|
|
|
property_conversion = property_converters[property](property, value)
|
|
if property_conversion:
|
|
return json_error(property_conversion)
|
|
|
|
do_change_subscription_property(user_profile, sub, stream_name,
|
|
property, value)
|
|
|
|
response_data.append({'stream': stream_name,
|
|
'property': property,
|
|
'value': value})
|
|
|
|
return json_success({"subscription_data": response_data})
|