from __future__ import absolute_import from django.conf import settings from django.utils.importlib import import_module from django.utils import timezone from django.contrib.sessions.models import Session as djSession import sockjs.tornado import tornado.ioloop import ujson import logging import time import redis from zerver.models import UserProfile, get_user_profile_by_id, get_client from zerver.lib.queue import queue_json_publish from zerver.lib.actions import check_send_message, extract_recipients from zerver.decorator import JsonableError from zerver.lib.utils import statsd from zerver.lib.event_queue import get_client_descriptor djsession_engine = import_module(settings.SESSION_ENGINE) def get_user_profile(session_id): if session_id is None: return None try: djsession = djSession.objects.get(expire_date__gt=timezone.now(), session_key=session_id) except djSession.DoesNotExist: return None session_store = djsession_engine.SessionStore(djsession.session_key) try: return UserProfile.objects.get(pk=session_store['_auth_user_id']) except UserProfile.DoesNotExist: return None connections = dict() def get_connection(id): return connections.get(id) def register_connection(id, conn): conn.client_id = id connections[conn.client_id] = conn def deregister_connection(conn): del connections[conn.client_id] def fake_log_line(conn_info, time, ret_code, path, email): # These two functions are copied from our middleware. At some # point we will just run the middleware directly. def timedelta_ms(timedelta): return timedelta * 1000 def format_timedelta(timedelta): if (timedelta >= 1): return "%.1fs" % (timedelta) return "%.0fms" % (timedelta_ms(timedelta),) logging.info('%-15s %-7s %3d %5s %s (%s)' % (conn_info.ip, 'SOCKET', ret_code, format_timedelta(time), path, email)) redis_client = redis.StrictRedis(host=settings.REDIS_HOST, port=settings.REDIS_PORT, db=0) def req_redis_key(client_id, req_id): return 'socket_req_status:%s:%s' % (client_id, req_id) class SocketAuthError(Exception): def __init__(self, msg): self.msg = msg class SocketConnection(sockjs.tornado.SockJSConnection): def on_open(self, info): self.authenticated = False self.session.user_profile = None self.browser_session_id = info.get_cookie(settings.SESSION_COOKIE_NAME).value self.csrf_token = info.get_cookie(settings.CSRF_COOKIE_NAME).value ioloop = tornado.ioloop.IOLoop.instance() self.timeout_handle = ioloop.add_timeout(time.time() + 10, self.close) fake_log_line(info, 0, 200, 'Connection opened using %s' % (self.session.transport_name,), 'unknown') def authenticate_client(self, msg): if self.authenticated: self.session.send_message({'req_id': msg['req_id'], 'response': {'result': 'error', 'msg': 'Already authenticated'}}) return user_profile = get_user_profile(self.browser_session_id) if user_profile is None: raise SocketAuthError('Unknown or missing session') self.session.user_profile = user_profile if msg['request']['csrf_token'] != self.csrf_token: raise SocketAuthError('CSRF token does not match that in cookie') if not 'queue_id' in msg['request']: raise SocketAuthError("Missing 'queue_id' argument") queue_id = msg['request']['queue_id'] client = get_client_descriptor(queue_id) if client is None: raise SocketAuthError('Bad event queue id: %s' % (queue_id,)) if user_profile.id != client.user_profile_id: raise SocketAuthError("You are not the owner of the queue with id '%s'" % (queue_id,)) self.authenticated = True register_connection(queue_id, self) response = {'req_id': msg['req_id'], 'response': {'result': 'success', 'msg': ''}} status_inquiries = msg['request'].get('status_inquiries') if status_inquiries is not None: results = {} for inquiry in status_inquiries: status = redis_client.hgetall(req_redis_key(self.client_id, inquiry)) if len(status) == 0: status['status'] = 'not_received' if 'response' in status: status['response'] = ujson.loads(status['response']) results[str(inquiry)] = status response['response']['status_inquiries'] = results self.session.send_message(response) fake_log_line(self.session.conn_info, 0, 200, "Authenticated using %s" % (self.session.transport_name,), user_profile.email) ioloop = tornado.ioloop.IOLoop.instance() ioloop.remove_timeout(self.timeout_handle) def on_message(self, msg): start_time = time.time() msg = ujson.loads(msg) if msg['type'] == 'auth': try: self.authenticate_client(msg) except SocketAuthError as e: fake_log_line(self.session.conn_info, 0, 403, e.msg, 'unknown') self.session.send_message({'req_id': msg['req_id'], 'response': {'result': 'error', 'msg': e.msg}}) return else: if not self.authenticated: error_msg = 'Not yet authenticated' fake_log_line(self.session.conn_info, 0, 403, error_msg, 'unknown') self.session.send_message({'req_id': msg['req_id'], 'response': {'result': 'error', 'msg': error_msg}}) return redis_key = req_redis_key(self.client_id, msg['req_id']) with redis_client.pipeline() as pipeline: pipeline.hmset(redis_key, {'status': 'receieved'}); pipeline.expire(redis_key, 60 * 5) pipeline.execute() queue_json_publish("message_sender", dict(request=msg['request'], req_id=msg['req_id'], server_meta=dict(user_id=self.session.user_profile.id, client_id=self.client_id, return_queue="tornado_return", start_time=start_time, request_environ=dict(REMOTE_ADDR=self.session.conn_info.ip))), fake_message_sender) def on_close(self): deregister_connection(self) if self.session.user_profile is None: fake_log_line(self.session.conn_info, 0, 408, 'Timeout while waiting for authentication', 'unknown') else: fake_log_line(self.session.conn_info, 0, 200, 'Connection closed', 'unknown') def fake_message_sender(event): req = event['request'] try: sender = get_user_profile_by_id(event['server_meta']['user_id']) client = get_client(req['client']) msg_id = check_send_message(sender, client, req['type'], extract_recipients(req['to']), req['subject'], req['content']) resp = {"result": "success", "msg": "", "id": msg_id} except JsonableError as e: resp = {"result": "error", "msg": str(e)} result = {'response': resp, 'req_id': event['req_id'], 'server_meta': event['server_meta']} respond_send_message(result) def respond_send_message(data): connection = get_connection(data['server_meta']['client_id']) if connection is not None: connection.session.send_message({'req_id': data['req_id'], 'response': data['response']}) time_elapsed = time.time() - data['server_meta']['start_time'] fake_log_line(connection.session.conn_info, time_elapsed, 200, 'send_message', connection.session.user_profile.email) sockjs_router = sockjs.tornado.SockJSRouter(SocketConnection, "/sockjs", {'sockjs_url': 'https://%s/static/third/sockjs/sockjs-0.3.4.js' % (settings.EXTERNAL_HOST,), 'disabled_transports': ['eventsource', 'htmlfile']}) def get_sockjs_router(): return sockjs_router