import calendar import logging import time from typing import Any, Dict, List, Optional, Tuple from django.conf import settings from django.http import HttpRequest, HttpResponse, HttpResponseRedirect from django.shortcuts import redirect, render from django.urls import reverse from django.utils import translation from django.utils.cache import patch_cache_control from two_factor.utils import default_device from zerver.decorator import zulip_login_required from zerver.forms import ToSForm from zerver.lib.actions import do_change_tos_version, realm_user_count from zerver.lib.events import do_events_register from zerver.lib.home import get_billing_info, get_user_permission_info from zerver.lib.i18n import ( get_language_list, get_language_list_for_templates, get_language_name, 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 generate_random_token, statsd from zerver.models import Message, PreregistrationUser, Realm, Stream, UserProfile from zerver.views.compatibility import is_outdated_desktop_app, is_unsupported_browser from zerver.views.message_flags import get_latest_update_message_flag_activity from zerver.views.portico import hello_view 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 get_furthest_read_time(user_profile: Optional[UserProfile]) -> Optional[float]: if user_profile is None: return time.time() user_activity = get_latest_update_message_flag_activity(user_profile) if user_activity is None: return None return calendar.timegm(user_activity.last_visit.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["color_scheme"] == 2 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 hello_view(request) @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 update_last_reminder(user_profile) statsd.incr('views.home') # 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) client_capabilities = { 'notification_settings_null': True, 'bulk_message_deletion': True, 'user_avatar_url_field_optional': True, } register_ret = do_events_register(user_profile, request.client, apply_markdown=True, client_gravatar=True, slim_presence=True, client_capabilities=client_capabilities, narrow=narrow) 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 furthest_read_time = get_furthest_read_time(user_profile) # 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. 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, save_stacktraces = settings.SAVE_FRONTEND_STACKTRACES, warn_no_email = settings.WARN_NO_EMAIL, search_pills_enabled = settings.SEARCH_PILLS_ENABLED, # Misc. extra data. 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: max_message_id = Message.objects.filter(recipient=recipient).order_by('id').reverse()[0].id except IndexError: max_message_id = -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"] = max_message_id page_params["enable_desktop_notifications"] = False show_invites, show_add_streams = compute_show_invites_and_add_streams(user_profile) billing_info = get_billing_info(user_profile) request._log_data['extra'] = "[{}]".format(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) user_permission_info = get_user_permission_info(user_profile) 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': billing_info.show_billing, 'corporate_enabled': settings.CORPORATE_ENABLED, 'show_plans': billing_info.show_plans, 'is_owner': user_permission_info.is_realm_owner, 'is_admin': user_permission_info.is_realm_admin, 'is_guest': user_permission_info.is_guest, 'color_scheme': user_permission_info.color_scheme, 'navbar_logo_url': navbar_logo_url, 'show_webathena': user_permission_info.show_webathena, 'embedded': narrow_stream is not None, 'invite_as': PreregistrationUser.INVITE_AS, 'max_file_upload_size_mib': 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'))