from __future__ import absolute_import from typing import Any, List, Dict, Optional, Text from django.conf import settings from django.core.urlresolvers import reverse from django.http import HttpResponseRedirect, HttpResponse, HttpRequest from django.shortcuts import redirect, render from django.utils import translation from django.utils.cache import patch_cache_control from six.moves import zip_longest, zip, range from zerver.decorator import zulip_login_required, process_client from zerver.forms import ToSForm from zerver.lib.realm_icon import realm_icon_url from zerver.models import Message, UserProfile, Stream, Subscription, Huddle, \ Recipient, Realm, UserMessage, DefaultStream, RealmEmoji, RealmDomain, \ RealmFilter, PreregistrationUser, UserActivity, \ UserPresence, get_recipient, name_changes_disabled, email_to_username, \ get_realm_domains from zerver.lib.events import do_events_register from zerver.lib.actions import update_user_presence, do_change_tos_version, \ do_update_pointer, realm_user_count from zerver.lib.avatar import avatar_url from zerver.lib.i18n import get_language_list, get_language_name, \ get_language_list_for_templates from zerver.lib.push_notifications import num_push_devices_for_user from zerver.lib.streams import access_stream_by_name from zerver.lib.utils import statsd, get_subdomain import calendar import datetime import logging import os import re import simplejson import time @zulip_login_required def accounts_accept_terms(request): # type: (HttpRequest) -> HttpResponse if request.method == "POST": form = ToSForm(request.POST) if form.is_valid(): do_change_tos_version(request.user, settings.TOS_VERSION) return redirect(home) else: form = ToSForm() email = request.user.email special_message_template = None if request.user.tos_version is None and settings.FIRST_TIME_TOS_TEMPLATE is not None: special_message_template = 'zerver/' + settings.FIRST_TIME_TOS_TEMPLATE return render( request, 'zerver/accounts_accept_terms.html', context={'form': form, 'email': email, 'special_message_template': special_message_template}, ) def approximate_unread_count(user_profile): # type: (UserProfile) -> int not_in_home_view_recipients = [sub.recipient.id for sub in Subscription.objects.filter( user_profile=user_profile, in_home_view=False)] # TODO: We may want to exclude muted messages from this count. # It was attempted in the past, but the original attempt # was broken. When we re-architect muting, we may # want to to revisit this (see git issue #1019). return UserMessage.objects.filter( user_profile=user_profile, message_id__gt=user_profile.pointer).exclude( message__recipient__type=Recipient.STREAM, message__recipient__id__in=not_in_home_view_recipients).exclude( flags=UserMessage.flags.read).count() def sent_time_in_epoch_seconds(user_message): # type: (UserMessage) -> Optional[float] # user_message is a UserMessage object. if not user_message: return None # We have USE_TZ = True, so our datetime objects are timezone-aware. # Return the epoch seconds in UTC. return calendar.timegm(user_message.message.pub_date.utctimetuple()) def home(request): # type: (HttpRequest) -> HttpResponse if settings.DEVELOPMENT and os.path.exists('var/handlebars-templates/compile.error'): response = render(request, 'zerver/handlebars_compilation_failed.html') response.status_code = 500 return response if not settings.SUBDOMAINS_HOMEPAGE: return home_real(request) # If settings.SUBDOMAINS_HOMEPAGE, sends the user the landing # page, not the login form, on the root domain subdomain = get_subdomain(request) if subdomain != "": return home_real(request) return render(request, 'zerver/hello.html') @zulip_login_required def home_real(request): # type: (HttpRequest) -> HttpResponse # We need to modify the session object every two weeks or it will expire. # This line makes reloading the page a sufficient action to keep the # session alive. request.session.modified = True user_profile = request.user # If a user hasn't signed the current Terms of Service, send them there if settings.TERMS_OF_SERVICE is not None and settings.TOS_VERSION is not None and \ int(settings.TOS_VERSION.split('.')[0]) > user_profile.major_tos_version(): return accounts_accept_terms(request) narrow = [] # type: List[List[Text]] narrow_stream = None narrow_topic = request.GET.get("topic") if request.GET.get("stream"): try: narrow_stream_name = request.GET.get("stream") (narrow_stream, ignored_rec, ignored_sub) = access_stream_by_name( user_profile, narrow_stream_name) narrow = [["stream", narrow_stream.name]] except Exception: logging.exception("Narrow parsing") if narrow_stream is not None and narrow_topic is not None: narrow.append(["topic", narrow_topic]) register_ret = do_events_register(user_profile, request.client, apply_markdown=True, narrow=narrow) user_has_messages = (register_ret['max_message_id'] != -1) # Reset our don't-spam-users-with-email counter since the # user has since logged in if user_profile.last_reminder is not None: user_profile.last_reminder = None user_profile.save(update_fields=["last_reminder"]) # Brand new users get the tutorial needs_tutorial = settings.TUTORIAL_ENABLED and \ user_profile.tutorial_status != UserProfile.TUTORIAL_FINISHED first_in_realm = realm_user_count(user_profile.realm) == 1 # If you are the only person in the realm and you didn't invite # anyone, we'll continue to encourage you to do so on the frontend. prompt_for_invites = first_in_realm and \ not PreregistrationUser.objects.filter(referred_by=user_profile).count() if user_profile.pointer == -1 and user_has_messages: # Put the new user's pointer at the bottom # # This improves performance, because we limit backfilling of messages # before the pointer. It's also likely that someone joining an # organization is interested in recent messages more than the very # first messages on the system. register_ret['pointer'] = register_ret['max_message_id'] user_profile.last_pointer_updater = request.session.session_key if user_profile.pointer == -1: latest_read = None else: try: latest_read = UserMessage.objects.get(user_profile=user_profile, message__id=user_profile.pointer) except UserMessage.DoesNotExist: # Don't completely fail if your saved pointer ID is invalid logging.warning("%s has invalid pointer %s" % (user_profile.email, user_profile.pointer)) latest_read = None # Set default language and make it persist default_language = register_ret['default_language'] url_lang = '/{}'.format(request.LANGUAGE_CODE) if not request.path.startswith(url_lang): translation.activate(default_language) request.session[translation.LANGUAGE_SESSION_KEY] = default_language # Pass parameters to the client-side JavaScript code. # These end up in a global JavaScript Object named 'page_params'. page_params = dict( # Server settings. development_environment = settings.DEVELOPMENT, debug_mode = settings.DEBUG, test_suite = settings.TEST_SUITE, poll_timeout = settings.POLL_TIMEOUT, login_page = settings.HOME_NOT_LOGGED_IN, server_uri = settings.SERVER_URI, maxfilesize = settings.MAX_FILE_UPLOAD_SIZE, max_avatar_file_size = settings.MAX_AVATAR_FILE_SIZE, server_generation = settings.SERVER_GENERATION, use_websockets = settings.USE_WEBSOCKETS, save_stacktraces = settings.SAVE_FRONTEND_STACKTRACES, server_inline_image_preview = settings.INLINE_IMAGE_PREVIEW, server_inline_url_embed_preview = settings.INLINE_URL_EMBED_PREVIEW, password_min_length = settings.PASSWORD_MIN_LENGTH, password_min_quality = settings.PASSWORD_MIN_ZXCVBN_QUALITY, # Misc. extra data. have_initial_messages = user_has_messages, initial_servertime = time.time(), # Used for calculating relative presence age default_language_name = get_language_name(register_ret['default_language']), language_list_dbl_col = get_language_list_for_templates(register_ret['default_language']), language_list = get_language_list(), needs_tutorial = needs_tutorial, first_in_realm = first_in_realm, prompt_for_invites = prompt_for_invites, unread_count = approximate_unread_count(user_profile), furthest_read_time = sent_time_in_epoch_seconds(latest_read), has_mobile_devices = num_push_devices_for_user(user_profile) > 0, ) undesired_register_ret_fields = [ 'streams', ] for field_name in set(register_ret.keys()) - set(undesired_register_ret_fields): page_params[field_name] = register_ret[field_name] if narrow_stream is not None: # In narrow_stream context, initial pointer is just latest message recipient = get_recipient(Recipient.STREAM, narrow_stream.id) try: initial_pointer = Message.objects.filter(recipient=recipient).order_by('id').reverse()[0].id except IndexError: initial_pointer = -1 page_params["narrow_stream"] = narrow_stream.name if narrow_topic is not None: page_params["narrow_topic"] = narrow_topic page_params["narrow"] = [dict(operator=term[0], operand=term[1]) for term in narrow] page_params["max_message_id"] = initial_pointer page_params["pointer"] = initial_pointer page_params["have_initial_messages"] = (initial_pointer != -1) page_params["enable_desktop_notifications"] = False statsd.incr('views.home') show_invites = True # Some realms only allow admins to invite users if user_profile.realm.invite_by_admins_only and not user_profile.is_realm_admin: show_invites = False request._log_data['extra'] = "[%s]" % (register_ret["queue_id"],) response = render(request, 'zerver/index.html', context={'user_profile': user_profile, 'page_params': simplejson.encoder.JSONEncoderForHTML().encode(page_params), 'nofontface': is_buggy_ua(request.META.get("HTTP_USER_AGENT", "Unspecified")), 'avatar_url': avatar_url(user_profile), 'show_debug': settings.DEBUG and ('show_debug' in request.GET), 'pipeline': settings.PIPELINE_ENABLED, 'show_invites': show_invites, 'is_admin': user_profile.is_realm_admin, 'show_webathena': user_profile.realm.webathena_enabled, 'enable_feedback': settings.ENABLE_FEEDBACK, 'embedded': narrow_stream is not None, },) patch_cache_control(response, no_cache=True, no_store=True, must_revalidate=True) return response @zulip_login_required def desktop_home(request): # type: (HttpRequest) -> HttpResponse return HttpResponseRedirect(reverse('zerver.views.home.home')) def apps_view(request): # type: (HttpRequest) -> HttpResponse if settings.ZILENCER_ENABLED: return render(request, 'zerver/apps.html') return HttpResponseRedirect('https://zulipchat.com/apps/', status=301) def is_buggy_ua(agent): # type: (str) -> bool """Discrimiate CSS served to clients based on User Agent Due to QTBUG-3467, @font-face is not supported in QtWebKit. This may get fixed in the future, but for right now we can just serve the more conservative CSS to all our desktop apps. """ return ("Humbug Desktop/" in agent or "Zulip Desktop/" in agent or "ZulipDesktop/" in agent) and \ "Mac" not in agent