import string from django import forms from django.contrib.auth.decorators import login_required from django.contrib.syndication.views import Feed from django.core import validators from django.http import Http404, JsonResponse from django.shortcuts import redirect from django.utils.decorators import method_decorator from django.utils.feedgenerator import Rss201rev2Feed from django.utils.xmlutils import SimplerXMLGenerator from django.views.decorators.vary import vary_on_headers from django.views.generic import FormView, ListView, TemplateView, View from activities.models import Post, PostInteraction from activities.services import TimelineService from core.decorators import cache_page, cache_page_by_ap_json from core.ld import canonicalise from core.models import Config from users.decorators import identity_required from users.models import Domain, FollowStates, Identity, IdentityStates from users.services import IdentityService from users.shortcuts import by_handle_or_404 @method_decorator(vary_on_headers("Accept"), name="dispatch") @method_decorator(cache_page_by_ap_json(public_only=True), name="dispatch") class ViewIdentity(ListView): """ Shows identity profile pages, and also acts as the Actor endpoint when approached with the right Accept header. """ template_name = "identity/view.html" paginate_by = 25 def get(self, request, handle): # Make sure we understand this handle self.identity = by_handle_or_404( self.request, handle, local=False, fetch=True, ) if ( not self.identity.local and self.identity.data_age > Config.system.identity_max_age ): self.identity.transition_perform(IdentityStates.outdated) # If they're coming in looking for JSON, they want the actor if request.ap_json: # Return actor info return self.serve_actor(self.identity) else: # Show normal page return super().get(request, identity=self.identity) def serve_actor(self, identity): # If this not a local actor, redirect to their canonical URI if not identity.local: return redirect(identity.actor_uri) return JsonResponse( canonicalise(identity.to_ap(), include_security=True), content_type="application/activity+json", ) def get_queryset(self): return TimelineService(self.request.identity).identity_public(self.identity) def get_context_data(self): context = super().get_context_data() context["identity"] = self.identity context["interactions"] = PostInteraction.get_post_interactions( context["page_obj"], self.request.identity, ) context["post_count"] = self.identity.posts.count() if self.identity.config_identity.visible_follows: context["followers_count"] = self.identity.inbound_follows.filter( state__in=FollowStates.group_active() ).count() context["following_count"] = self.identity.outbound_follows.filter( state__in=FollowStates.group_active() ).count() if self.request.identity: context.update( IdentityService(self.identity).relationships(self.request.identity) ) return context class FeedWithImages(Rss201rev2Feed): """Extended Feed class to attach multiple images.""" def rss_attributes(self): attrs = super().rss_attributes() attrs["xmlns:media"] = "http://search.yahoo.com/mrss/" attrs["xmlns:webfeeds"] = "http://webfeeds.org/rss/1.0" return attrs def add_root_elements(self, handler: SimplerXMLGenerator): super().add_root_elements(handler) handler.startElement("image", {}) handler.addQuickElement("url", self.feed["image"]["url"]) handler.addQuickElement("title", self.feed["image"]["title"]) handler.addQuickElement("link", self.feed["image"]["link"]) handler.endElement("image") handler.addQuickElement( "webfeeds:icon", self.feed["image"]["url"], ) def add_item_elements(self, handler: SimplerXMLGenerator, item): super().add_item_elements(handler, item) for image in item["images"]: handler.startElement( "media:content", { "url": image["url"], "type": image["mime_type"], "fileSize": image["length"], "medium": "image", }, ) if image["description"]: handler.addQuickElement( "media:description", image["description"], {"type": "plain"} ) handler.endElement("media:content") for hashtag in item["hashtags"]: handler.addQuickElement("category", hashtag) @method_decorator( cache_page("cache_timeout_identity_feed", public_only=True), name="__call__" ) class IdentityFeed(Feed): """ Serves a local user's Public posts as an RSS feed """ feed_type = FeedWithImages def get_object(self, request, handle): return by_handle_or_404( request, handle, local=True, ) def title(self, identity: Identity): return identity.name def description(self, identity: Identity): return f"Public posts from @{identity.handle}" def link(self, identity: Identity): return identity.absolute_profile_uri() def feed_extra_kwargs(self, identity: Identity): """ Return attached images data to allow `FeedWithImages.add_item_elements()` to attach multiple images for each ``. """ image = { "url": identity.local_icon_url().absolute, "title": identity.name, "link": identity.absolute_profile_uri(), } return {"image": image} def items(self, identity: Identity): return TimelineService(None).identity_public(identity)[:20] def item_description(self, item: Post): return item.safe_content_remote() def item_link(self, item: Post): return item.absolute_object_uri() def item_pubdate(self, item: Post): return item.published def item_extra_kwargs(self, item: Post): """ Return attached images data to allow `FeedWithImages.add_root_elements()` to add `` as RSS feed icon. """ images = [] for attachment in item.attachments.all(): images.append( { "url": attachment.full_url().absolute, "length": (str(attachment.file.size)), "mime_type": (attachment.mimetype), "description": (attachment.name), } ) return {"images": images, "hashtags": item.hashtags or []} class IdentityFollows(ListView): """ Shows following/followers for an identity. """ template_name = "identity/follows.html" paginate_by = 25 inbound = False def get(self, request, handle): self.identity = by_handle_or_404( self.request, handle, local=False, ) if not Config.load_identity(self.identity).visible_follows: raise Http404("Hidden follows") return super().get(request, identity=self.identity) def get_queryset(self): if self.inbound: return IdentityService(self.identity).followers() else: return IdentityService(self.identity).following() def get_context_data(self): context = super().get_context_data() context["identity"] = self.identity context["inbound"] = self.inbound context["follows_page"] = True context["followers_count"] = self.identity.inbound_follows.filter( state__in=FollowStates.group_active() ).count() context["following_count"] = self.identity.outbound_follows.filter( state__in=FollowStates.group_active() ).count() context["post_count"] = self.identity.posts.count() return context @method_decorator(identity_required, name="dispatch") class ActionIdentity(View): def post(self, request, handle): identity = by_handle_or_404(self.request, handle, local=False) # See what action we should perform action = self.request.POST["action"] if action == "follow": IdentityService(identity).follow_from(self.request.identity) elif action == "unfollow": IdentityService(identity).unfollow_from(self.request.identity) elif action == "block": IdentityService(identity).block_from(self.request.identity) elif action == "unblock": IdentityService(identity).unblock_from(self.request.identity) elif action == "mute": IdentityService(identity).mute_from(self.request.identity) elif action == "unmute": IdentityService(identity).unmute_from(self.request.identity) elif action == "hide_boosts": IdentityService(identity).follow_from(self.request.identity, boosts=False) elif action == "show_boosts": IdentityService(identity).follow_from(self.request.identity, boosts=True) else: raise ValueError(f"Cannot handle identity action {action}") return redirect(identity.urls.view) @method_decorator(login_required, name="dispatch") class SelectIdentity(TemplateView): template_name = "identity/select.html" def get_context_data(self): return { "identities": Identity.objects.filter(users__pk=self.request.user.pk), } @method_decorator(login_required, name="dispatch") class ActivateIdentity(View): def get(self, request, handle): identity = by_handle_or_404(request, handle) if not identity.users.filter(pk=request.user.pk).exists(): raise Http404() request.session["identity_id"] = identity.id # Get next URL, not allowing offsite links next = request.GET.get("next") or "/" if ":" in next: next = "/" return redirect("/") @method_decorator(login_required, name="dispatch") class CreateIdentity(FormView): template_name = "identity/create.html" class form_class(forms.Form): username = forms.CharField( help_text="Must be unique on your domain. Cannot be changed easily. Use only: a-z 0-9 _ -" ) domain = forms.ChoiceField( help_text="Pick the domain to make this identity on. Cannot be changed later." ) name = forms.CharField( help_text="The display name other users see. You can change this easily." ) discoverable = forms.BooleanField( help_text="If this user is visible on the frontpage and in user directories.", initial=True, widget=forms.Select( choices=[(True, "Discoverable"), (False, "Not Discoverable")] ), required=False, ) def __init__(self, user, *args, **kwargs): super().__init__(*args, **kwargs) self.fields["domain"].choices = [ (domain.domain, domain.domain) for domain in Domain.available_for_user(user) ] self.user = user def clean_username(self): # Remove any leading @ and force it lowercase value = self.cleaned_data["username"].lstrip("@").lower() if not self.user.admin: # Apply username min length limit = int(Config.system.identity_min_length) validators.MinLengthValidator(limit)(value) # Apply username restrictions if value in Config.system.restricted_usernames.split(): raise forms.ValidationError( "This username is restricted to administrators only." ) if value in ["__system__"]: raise forms.ValidationError( "This username is reserved for system use." ) # Validate it's all ascii characters for character in value: if character not in string.ascii_letters + string.digits + "_-": raise forms.ValidationError( "Only the letters a-z, numbers 0-9, dashes, and underscores are allowed." ) return value def clean(self): # Check for existing users username = self.cleaned_data.get("username") domain = self.cleaned_data.get("domain") if ( username and domain and Identity.objects.filter( username__iexact=username, domain=domain.lower(), ).exists() ): raise forms.ValidationError(f"{username}@{domain} is already taken") if not self.user.admin and ( Identity.objects.filter(users=self.user).count() >= Config.system.identity_max_per_user ): raise forms.ValidationError( f"You are not allowed more than {Config.system.identity_max_per_user} identities" ) def get_form(self): form_class = self.get_form_class() return form_class(user=self.request.user, **self.get_form_kwargs()) def form_valid(self, form): username = form.cleaned_data["username"] domain = form.cleaned_data["domain"] domain_instance = Domain.get_domain(domain) identity = IdentityService.create( user=self.request.user, username=username, domain=domain_instance, name=form.cleaned_data["name"], discoverable=form.cleaned_data["discoverable"], ) self.request.session["identity_id"] = identity.id return redirect(identity.urls.view)