from typing import Any, List, Dict, Optional, Tuple from django.conf import settings from django.urls 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 zerver.context_processors import latest_info_context from zerver.decorator import zulip_login_required from zerver.forms import ToSForm from zerver.models import Message, Stream, UserProfile, \ Realm, UserMessage, \ PreregistrationUser, \ get_latest_read_usermessage from zerver.lib.events import do_events_register from zerver.lib.actions import do_change_tos_version, \ realm_user_count from zerver.lib.i18n import get_language_list, get_language_name, \ get_language_list_for_templates, get_language_translation_data from zerver.lib.push_notifications import num_push_devices_for_user from zerver.lib.streams import access_stream_by_name from zerver.lib.subdomains import get_subdomain from zerver.lib.users import compute_show_invites_and_add_streams from zerver.lib.utils import statsd, generate_random_token from zerver.views.compatibility import is_outdated_desktop_app, \ is_unsupported_browser from two_factor.utils import default_device import calendar import logging import time def need_accept_tos(user_profile: Optional[UserProfile]) -> bool: if user_profile is None: # nocoverage return False if settings.TERMS_OF_SERVICE is None: # nocoverage return False if settings.TOS_VERSION is None: return False return int(settings.TOS_VERSION.split('.')[0]) > user_profile.major_tos_version() @zulip_login_required def accounts_accept_terms(request: 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.delivery_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 detect_narrowed_window(request: HttpRequest, user_profile: Optional[UserProfile]) -> Tuple[List[List[str]], Optional[Stream], Optional[str]]: """This function implements Zulip's support for a mini Zulip window that just handles messages from a single narrow""" if user_profile is None: # nocoverage return [], None, None narrow: List[List[str]] = [] narrow_stream = None narrow_topic = request.GET.get("topic") if request.GET.get("stream"): try: # TODO: We should support stream IDs and PMs here as well. 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.warning("Invalid narrow requested, ignoring", extra=dict(request=request)) if narrow_stream is not None and narrow_topic is not None: narrow.append(["topic", narrow_topic]) return narrow, narrow_stream, narrow_topic def update_last_reminder(user_profile: Optional[UserProfile]) -> None: """Reset our don't-spam-users-with-email counter since the user has since logged in """ if user_profile is None: # nocoverage return if user_profile.last_reminder is not None: # nocoverage # TODO: Look into the history of last_reminder; we may have # eliminated that as a useful concept for non-bot users. user_profile.last_reminder = None user_profile.save(update_fields=["last_reminder"]) def sent_time_in_epoch_seconds(user_message: Optional[UserMessage]) -> Optional[float]: if user_message is None: 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.date_sent.utctimetuple()) def get_bot_types(user_profile: Optional[UserProfile]) -> List[Dict[str, object]]: bot_types: List[Dict[str, object]] = [] if user_profile is None: # nocoverage return bot_types for type_id, name in UserProfile.BOT_TYPES.items(): bot_types.append({ 'type_id': type_id, 'name': name, 'allowed': type_id in user_profile.allowed_bot_types }) return bot_types def compute_navbar_logo_url(page_params: Dict[str, Any]) -> str: if page_params["night_mode"] and page_params["realm_night_logo_source"] != Realm.LOGO_DEFAULT: navbar_logo_url = page_params["realm_night_logo_url"] else: navbar_logo_url = page_params["realm_logo_url"] return navbar_logo_url def home(request: HttpRequest) -> HttpResponse: if not settings.ROOT_DOMAIN_LANDING_PAGE: return home_real(request) # If settings.ROOT_DOMAIN_LANDING_PAGE, sends the user the landing # page, not the login form, on the root domain subdomain = get_subdomain(request) if subdomain != Realm.SUBDOMAIN_FOR_ROOT_DOMAIN: return home_real(request) return render(request, 'zerver/hello.html', latest_info_context()) @zulip_login_required def home_real(request: HttpRequest) -> HttpResponse: # Before we do any real work, check if the app is banned. client_user_agent = request.META.get("HTTP_USER_AGENT", "") (insecure_desktop_app, banned_desktop_app, auto_update_broken) = is_outdated_desktop_app( client_user_agent) if banned_desktop_app: return render( request, 'zerver/insecure_desktop_app.html', context={ "auto_update_broken": auto_update_broken, } ) (unsupported_browser, browser_name) = is_unsupported_browser(client_user_agent) if unsupported_browser: return render( request, 'zerver/unsupported_browser.html', context={ "browser_name": browser_name, } ) # 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 if request.user.is_authenticated: user_profile = request.user else: # nocoverage # This code path should not be reachable because of zulip_login_required above. user_profile = None # If a user hasn't signed the current Terms of Service, send them there if need_accept_tos(user_profile): return accounts_accept_terms(request) narrow, narrow_stream, narrow_topic = detect_narrowed_window(request, user_profile) register_ret = do_events_register(user_profile, request.client, apply_markdown=True, client_gravatar=True, slim_presence=True, notification_settings_null=True, narrow=narrow) user_has_messages = (register_ret['max_message_id'] != -1) update_last_reminder(user_profile) if user_profile is not None: 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() ) needs_tutorial = user_profile.tutorial_status == UserProfile.TUTORIAL_WAITING else: # nocoverage first_in_realm = False prompt_for_invites = False # The current tutorial doesn't super make sense for logged-out users. needs_tutorial = False if user_profile is None: # nocoverage furthest_read_time: Optional[float] = time.time() elif user_profile.pointer == -1: if 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'] furthest_read_time = None else: latest_read = get_latest_read_usermessage(user_profile) furthest_read_time = sent_time_in_epoch_seconds(latest_read) # We pick a language for the user as follows: # * First priority is the language in the URL, for debugging. # * If not in the URL, we use the language from the user's settings. request_language = translation.get_language_from_path(request.path_info) if request_language is None: request_language = register_ret['default_language'] translation.activate(request_language) # We also save the language to the user's session, so that # something reasonable will happen in logged-in portico pages. request.session[translation.LANGUAGE_SESSION_KEY] = translation.get_language() two_fa_enabled = settings.TWO_FACTOR_AUTHENTICATION_ENABLED and user_profile is not None # 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, insecure_desktop_app = insecure_desktop_app, login_page = settings.HOME_NOT_LOGGED_IN, root_domain_uri = settings.ROOT_DOMAIN_URI, max_file_upload_size = settings.MAX_FILE_UPLOAD_SIZE, max_avatar_file_size = settings.MAX_AVATAR_FILE_SIZE, server_generation = settings.SERVER_GENERATION, save_stacktraces = settings.SAVE_FRONTEND_STACKTRACES, warn_no_email = settings.WARN_NO_EMAIL, 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_guesses = settings.PASSWORD_MIN_GUESSES, jitsi_server_url = settings.JITSI_SERVER_URL, search_pills_enabled = settings.SEARCH_PILLS_ENABLED, server_avatar_changes_disabled = settings.AVATAR_CHANGES_DISABLED, server_name_changes_disabled = settings.NAME_CHANGES_DISABLED, # 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, furthest_read_time = furthest_read_time, has_mobile_devices = user_profile is not None and num_push_devices_for_user(user_profile) > 0, bot_types = get_bot_types(user_profile), two_fa_enabled = two_fa_enabled, # Adding two_fa_enabled as condition saves us 3 queries when # 2FA is not enabled. two_fa_enabled_user = two_fa_enabled and bool(default_device(user_profile)), ) 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 = narrow_stream.recipient 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, show_add_streams = compute_show_invites_and_add_streams(user_profile) show_billing = False show_plans = False if settings.CORPORATE_ENABLED and user_profile is not None: from corporate.models import Customer, CustomerPlan if user_profile.is_billing_admin or user_profile.is_realm_admin: customer = Customer.objects.filter(realm=user_profile.realm).first() if customer is not None and CustomerPlan.objects.filter(customer=customer).exists(): show_billing = True if user_profile.realm.plan_type == Realm.LIMITED: show_plans = True request._log_data['extra'] = "[%s]" % (register_ret["queue_id"],) page_params['translation_data'] = {} if request_language != 'en': page_params['translation_data'] = get_language_translation_data(request_language) csp_nonce = generate_random_token(48) if user_profile is not None: night_mode = user_profile.night_mode is_guest = user_profile.is_guest is_realm_admin = user_profile.is_realm_admin show_webathena = user_profile.realm.webathena_enabled else: # nocoverage night_mode = False is_guest = False is_realm_admin = False show_webathena = False navbar_logo_url = compute_navbar_logo_url(page_params) response = render(request, 'zerver/app/index.html', context={'user_profile': user_profile, 'page_params': page_params, 'csp_nonce': csp_nonce, 'search_pills_enabled': settings.SEARCH_PILLS_ENABLED, 'show_invites': show_invites, 'show_add_streams': show_add_streams, 'show_billing': show_billing, 'show_plans': show_plans, 'is_admin': is_realm_admin, 'is_guest': is_guest, 'night_mode': night_mode, 'navbar_logo_url': navbar_logo_url, 'show_webathena': show_webathena, 'embedded': narrow_stream is not None, 'invite_as': PreregistrationUser.INVITE_AS, 'max_file_upload_size': settings.MAX_FILE_UPLOAD_SIZE, },) patch_cache_control(response, no_cache=True, no_store=True, must_revalidate=True) return response @zulip_login_required def desktop_home(request: HttpRequest) -> HttpResponse: return HttpResponseRedirect(reverse('zerver.views.home.home'))