git.squeep.com Git - akkoma/blob - lib/pleroma/web/activity_pub/views/user_view.ex

   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.UserView do
   6   use Pleroma.Web, :view
   7
   8   alias Pleroma.Keys
   9   alias Pleroma.Repo
  10   alias Pleroma.User
  11   alias Pleroma.Web.ActivityPub.Transmogrifier
  12   alias Pleroma.Web.ActivityPub.Utils
  13   alias Pleroma.Web.Endpoint
  14   alias Pleroma.Web.Router.Helpers
  15
  16   import Ecto.Query
  17
  18   def render("endpoints.json", %{user: %User{nickname: nil, local: true} = _user}) do
  19     %{"sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)}
  20   end
  21
  22   def render("endpoints.json", %{user: %User{local: true} = _user}) do
  23     %{
  24       "oauthAuthorizationEndpoint" => Helpers.o_auth_url(Endpoint, :authorize),
  25       "oauthRegistrationEndpoint" => Helpers.mastodon_api_url(Endpoint, :create_app),
  26       "oauthTokenEndpoint" => Helpers.o_auth_url(Endpoint, :token_exchange),
  27       "sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)
  28     }
  29   end
  30
  31   def render("endpoints.json", _), do: %{}
  32
  33   def render("service.json", %{user: user}) do
  34     {:ok, user} = User.ensure_keys_present(user)
  35     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  36     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  37     public_key = :public_key.pem_encode([public_key])
  38
  39     endpoints = render("endpoints.json", %{user: user})
  40
  41     %{
  42       "id" => user.ap_id,
  43       "type" => "Application",
  44       "following" => "#{user.ap_id}/following",
  45       "followers" => "#{user.ap_id}/followers",
  46       "inbox" => "#{user.ap_id}/inbox",
  47       "name" => "Pleroma",
  48       "summary" =>
  49         "An internal service actor for this Pleroma instance.  No user-serviceable parts inside.",
  50       "url" => user.ap_id,
  51       "manuallyApprovesFollowers" => false,
  52       "publicKey" => %{
  53         "id" => "#{user.ap_id}#main-key",
  54         "owner" => user.ap_id,
  55         "publicKeyPem" => public_key
  56       },
  57       "endpoints" => endpoints
  58     }
  59     |> Map.merge(Utils.make_json_ld_header())
  60   end
  61
  62   # the instance itself is not a Person, but instead an Application
  63   def render("user.json", %{user: %User{nickname: nil} = user}),
  64     do: render("service.json", %{user: user})
  65
  66   def render("user.json", %{user: %User{nickname: "internal." <> _} = user}),
  67     do: render("service.json", %{user: user}) |> Map.put("preferredUsername", user.nickname)
  68
  69   def render("user.json", %{user: user}) do
  70     {:ok, user} = User.ensure_keys_present(user)
  71     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  72     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  73     public_key = :public_key.pem_encode([public_key])
  74
  75     endpoints = render("endpoints.json", %{user: user})
  76
  77     emoji_tags = Transmogrifier.take_emoji_tags(user)
  78
  79     fields =
  80       user.info
  81       |> User.Info.fields()
  82       |> Enum.map(fn %{"name" => name, "value" => value} ->
  83         %{
  84           "name" => Pleroma.HTML.strip_tags(name),
  85           "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
  86         }
  87       end)
  88       |> Enum.map(&Map.put(&1, "type", "PropertyValue"))
  89
  90     %{
  91       "id" => user.ap_id,
  92       "type" => "Person",
  93       "following" => "#{user.ap_id}/following",
  94       "followers" => "#{user.ap_id}/followers",
  95       "inbox" => "#{user.ap_id}/inbox",
  96       "outbox" => "#{user.ap_id}/outbox",
  97       "preferredUsername" => user.nickname,
  98       "name" => user.name,
  99       "summary" => user.bio,
 100       "url" => user.ap_id,
 101       "manuallyApprovesFollowers" => user.info.locked,
 102       "publicKey" => %{
 103         "id" => "#{user.ap_id}#main-key",
 104         "owner" => user.ap_id,
 105         "publicKeyPem" => public_key
 106       },
 107       "endpoints" => endpoints,
 108       "attachment" => fields,
 109       "tag" => (user.info.source_data["tag"] || []) ++ emoji_tags,
 110       "discoverable" => user.info.discoverable
 111     }
 112     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
 113     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))
 114     |> Map.merge(Utils.make_json_ld_header())
 115   end
 116
 117   def render("following.json", %{user: user, page: page} = opts) do
 118     showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 119     showing_count = showing_items || !user.info.hide_follows_count
 120
 121     query = User.get_friends_query(user)
 122     query = from(user in query, select: [:ap_id])
 123     following = Repo.all(query)
 124
 125     total =
 126       if showing_count do
 127         length(following)
 128       else
 129         0
 130       end
 131
 132     collection(following, "#{user.ap_id}/following", page, showing_items, total)
 133     |> Map.merge(Utils.make_json_ld_header())
 134   end
 135
 136   def render("following.json", %{user: user} = opts) do
 137     showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 138     showing_count = showing_items || !user.info.hide_follows_count
 139
 140     query = User.get_friends_query(user)
 141     query = from(user in query, select: [:ap_id])
 142     following = Repo.all(query)
 143
 144     total =
 145       if showing_count do
 146         length(following)
 147       else
 148         0
 149       end
 150
 151     %{
 152       "id" => "#{user.ap_id}/following",
 153       "type" => "OrderedCollection",
 154       "totalItems" => total,
 155       "first" =>
 156         if showing_items do
 157           collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
 158         else
 159           "#{user.ap_id}/following?page=1"
 160         end
 161     }
 162     |> Map.merge(Utils.make_json_ld_header())
 163   end
 164
 165   def render("followers.json", %{user: user, page: page} = opts) do
 166     showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 167     showing_count = showing_items || !user.info.hide_followers_count
 168
 169     query = User.get_followers_query(user)
 170     query = from(user in query, select: [:ap_id])
 171     followers = Repo.all(query)
 172
 173     total =
 174       if showing_count do
 175         length(followers)
 176       else
 177         0
 178       end
 179
 180     collection(followers, "#{user.ap_id}/followers", page, showing_items, total)
 181     |> Map.merge(Utils.make_json_ld_header())
 182   end
 183
 184   def render("followers.json", %{user: user} = opts) do
 185     showing_items = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 186     showing_count = showing_items || !user.info.hide_followers_count
 187
 188     query = User.get_followers_query(user)
 189     query = from(user in query, select: [:ap_id])
 190     followers = Repo.all(query)
 191
 192     total =
 193       if showing_count do
 194         length(followers)
 195       else
 196         0
 197       end
 198
 199     %{
 200       "id" => "#{user.ap_id}/followers",
 201       "type" => "OrderedCollection",
 202       "totalItems" => total,
 203       "first" =>
 204         if showing_items do
 205           collection(followers, "#{user.ap_id}/followers", 1, showing_items, total)
 206         else
 207           "#{user.ap_id}/followers?page=1"
 208         end
 209     }
 210     |> Map.merge(Utils.make_json_ld_header())
 211   end
 212
 213   def render("activity_collection.json", %{iri: iri}) do
 214     %{
 215       "id" => iri,
 216       "type" => "OrderedCollection",
 217       "first" => "#{iri}?page=true"
 218     }
 219     |> Map.merge(Utils.make_json_ld_header())
 220   end
 221
 222   def render("activity_collection_page.json", %{activities: activities, iri: iri}) do
 223     # this is sorted chronologically, so first activity is the newest (max)
 224     {max_id, min_id, collection} =
 225       if length(activities) > 0 do
 226         {
 227           Enum.at(activities, 0).id,
 228           Enum.at(Enum.reverse(activities), 0).id,
 229           Enum.map(activities, fn act ->
 230             {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 231             data
 232           end)
 233         }
 234       else
 235         {
 236           0,
 237           0,
 238           []
 239         }
 240       end
 241
 242     %{
 243       "id" => "#{iri}?max_id=#{max_id}&page=true",
 244       "type" => "OrderedCollectionPage",
 245       "partOf" => iri,
 246       "orderedItems" => collection,
 247       "next" => "#{iri}?max_id=#{min_id}&page=true"
 248     }
 249     |> Map.merge(Utils.make_json_ld_header())
 250   end
 251
 252   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
 253     offset = (page - 1) * 10
 254     items = Enum.slice(collection, offset, 10)
 255     items = Enum.map(items, fn user -> user.ap_id end)
 256     total = total || length(collection)
 257
 258     map = %{
 259       "id" => "#{iri}?page=#{page}",
 260       "type" => "OrderedCollectionPage",
 261       "partOf" => iri,
 262       "totalItems" => total,
 263       "orderedItems" => if(show_items, do: items, else: [])
 264     }
 265
 266     if offset < total do
 267       Map.put(map, "next", "#{iri}?page=#{page + 1}")
 268     else
 269       map
 270     end
 271   end
 272
 273   defp maybe_make_image(func, key, user) do
 274     if image = func.(user, no_default: true) do
 275       %{
 276         key => %{
 277           "type" => "Image",
 278           "url" => image
 279         }
 280       }
 281     else
 282       %{}
 283     end
 284   end
 285 end