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.ActivityPub
  12   alias Pleroma.Web.ActivityPub.Transmogrifier
  13   alias Pleroma.Web.ActivityPub.Utils
  14   alias Pleroma.Web.Endpoint
  15   alias Pleroma.Web.Router.Helpers
  16
  17   import Ecto.Query
  18
  19   def render("endpoints.json", %{user: %User{nickname: nil, local: true} = _user}) do
  20     %{"sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)}
  21   end
  22
  23   def render("endpoints.json", %{user: %User{local: true} = _user}) do
  24     %{
  25       "oauthAuthorizationEndpoint" => Helpers.o_auth_url(Endpoint, :authorize),
  26       "oauthRegistrationEndpoint" => Helpers.mastodon_api_url(Endpoint, :create_app),
  27       "oauthTokenEndpoint" => Helpers.o_auth_url(Endpoint, :token_exchange),
  28       "sharedInbox" => Helpers.activity_pub_url(Endpoint, :inbox)
  29     }
  30   end
  31
  32   def render("endpoints.json", _), do: %{}
  33
  34   def render("service.json", %{user: user}) do
  35     {:ok, user} = User.ensure_keys_present(user)
  36     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  37     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  38     public_key = :public_key.pem_encode([public_key])
  39
  40     endpoints = render("endpoints.json", %{user: user})
  41
  42     %{
  43       "id" => user.ap_id,
  44       "type" => "Application",
  45       "following" => "#{user.ap_id}/following",
  46       "followers" => "#{user.ap_id}/followers",
  47       "inbox" => "#{user.ap_id}/inbox",
  48       "name" => "Pleroma",
  49       "summary" =>
  50         "An internal service actor for this Pleroma instance.  No user-serviceable parts inside.",
  51       "url" => user.ap_id,
  52       "manuallyApprovesFollowers" => false,
  53       "publicKey" => %{
  54         "id" => "#{user.ap_id}#main-key",
  55         "owner" => user.ap_id,
  56         "publicKeyPem" => public_key
  57       },
  58       "endpoints" => endpoints
  59     }
  60     |> Map.merge(if user.nickname == nil do %{} else %{ "preferredUsername" => user.nickname})
  61     |> Map.merge(Utils.make_json_ld_header())
  62   end
  63
  64   # the instance itself is not a Person, but instead an Application
  65   def render("user.json", %{user: %User{nickname: nil} = user}),
  66     do: render("service.json", %{user: user})
  67
  68   def render("user.json", %{user: %User{nickname: "internal." <> _} = user}),
  69     do: render("service.json", %{user: user})
  70
  71   def render("user.json", %{user: user}) do
  72     {:ok, user} = User.ensure_keys_present(user)
  73     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  74     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  75     public_key = :public_key.pem_encode([public_key])
  76
  77     endpoints = render("endpoints.json", %{user: user})
  78
  79     user_tags =
  80       user
  81       |> Transmogrifier.add_emoji_tags()
  82       |> Map.get("tag", [])
  83
  84     %{
  85       "id" => user.ap_id,
  86       "type" => "Person",
  87       "following" => "#{user.ap_id}/following",
  88       "followers" => "#{user.ap_id}/followers",
  89       "inbox" => "#{user.ap_id}/inbox",
  90       "outbox" => "#{user.ap_id}/outbox",
  91       "preferredUsername" => user.nickname,
  92       "name" => user.name,
  93       "summary" => user.bio,
  94       "url" => user.ap_id,
  95       "manuallyApprovesFollowers" => user.info.locked,
  96       "publicKey" => %{
  97         "id" => "#{user.ap_id}#main-key",
  98         "owner" => user.ap_id,
  99         "publicKeyPem" => public_key
 100       },
 101       "endpoints" => endpoints,
 102       "tag" => (user.info.source_data["tag"] || []) ++ user_tags
 103     }
 104     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
 105     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))
 106     |> Map.merge(Utils.make_json_ld_header())
 107   end
 108
 109   def render("following.json", %{user: user, page: page} = opts) do
 110     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 111     query = User.get_friends_query(user)
 112     query = from(user in query, select: [:ap_id])
 113     following = Repo.all(query)
 114
 115     total =
 116       if showing do
 117         length(following)
 118       else
 119         0
 120       end
 121
 122     collection(following, "#{user.ap_id}/following", page, showing, total)
 123     |> Map.merge(Utils.make_json_ld_header())
 124   end
 125
 126   def render("following.json", %{user: user} = opts) do
 127     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 128     query = User.get_friends_query(user)
 129     query = from(user in query, select: [:ap_id])
 130     following = Repo.all(query)
 131
 132     total =
 133       if showing do
 134         length(following)
 135       else
 136         0
 137       end
 138
 139     %{
 140       "id" => "#{user.ap_id}/following",
 141       "type" => "OrderedCollection",
 142       "totalItems" => total,
 143       "first" =>
 144         if showing do
 145           collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
 146         else
 147           "#{user.ap_id}/following?page=1"
 148         end
 149     }
 150     |> Map.merge(Utils.make_json_ld_header())
 151   end
 152
 153   def render("followers.json", %{user: user, page: page} = opts) do
 154     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 155
 156     query = User.get_followers_query(user)
 157     query = from(user in query, select: [:ap_id])
 158     followers = Repo.all(query)
 159
 160     total =
 161       if showing do
 162         length(followers)
 163       else
 164         0
 165       end
 166
 167     collection(followers, "#{user.ap_id}/followers", page, showing, total)
 168     |> Map.merge(Utils.make_json_ld_header())
 169   end
 170
 171   def render("followers.json", %{user: user} = opts) do
 172     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 173
 174     query = User.get_followers_query(user)
 175     query = from(user in query, select: [:ap_id])
 176     followers = Repo.all(query)
 177
 178     total =
 179       if showing do
 180         length(followers)
 181       else
 182         0
 183       end
 184
 185     %{
 186       "id" => "#{user.ap_id}/followers",
 187       "type" => "OrderedCollection",
 188       "totalItems" => total,
 189       "first" =>
 190         if showing do
 191           collection(followers, "#{user.ap_id}/followers", 1, showing, total)
 192         else
 193           "#{user.ap_id}/followers?page=1"
 194         end
 195     }
 196     |> Map.merge(Utils.make_json_ld_header())
 197   end
 198
 199   def render("outbox.json", %{user: user, max_id: max_qid}) do
 200     params = %{
 201       "limit" => "10"
 202     }
 203
 204     params =
 205       if max_qid != nil do
 206         Map.put(params, "max_id", max_qid)
 207       else
 208         params
 209       end
 210
 211     activities = ActivityPub.fetch_user_activities(user, nil, params)
 212
 213     {max_id, min_id, collection} =
 214       if length(activities) > 0 do
 215         {
 216           Enum.at(Enum.reverse(activities), 0).id,
 217           Enum.at(activities, 0).id,
 218           Enum.map(activities, fn act ->
 219             {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 220             data
 221           end)
 222         }
 223       else
 224         {
 225           0,
 226           0,
 227           []
 228         }
 229       end
 230
 231     iri = "#{user.ap_id}/outbox"
 232
 233     page = %{
 234       "id" => "#{iri}?max_id=#{max_id}",
 235       "type" => "OrderedCollectionPage",
 236       "partOf" => iri,
 237       "orderedItems" => collection,
 238       "next" => "#{iri}?max_id=#{min_id}"
 239     }
 240
 241     if max_qid == nil do
 242       %{
 243         "id" => iri,
 244         "type" => "OrderedCollection",
 245         "first" => page
 246       }
 247       |> Map.merge(Utils.make_json_ld_header())
 248     else
 249       page |> Map.merge(Utils.make_json_ld_header())
 250     end
 251   end
 252
 253   def render("inbox.json", %{user: user, max_id: max_qid}) do
 254     params = %{
 255       "limit" => "10"
 256     }
 257
 258     params =
 259       if max_qid != nil do
 260         Map.put(params, "max_id", max_qid)
 261       else
 262         params
 263       end
 264
 265     activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
 266
 267     min_id = Enum.at(Enum.reverse(activities), 0).id
 268     max_id = Enum.at(activities, 0).id
 269
 270     collection =
 271       Enum.map(activities, fn act ->
 272         {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 273         data
 274       end)
 275
 276     iri = "#{user.ap_id}/inbox"
 277
 278     page = %{
 279       "id" => "#{iri}?max_id=#{max_id}",
 280       "type" => "OrderedCollectionPage",
 281       "partOf" => iri,
 282       "orderedItems" => collection,
 283       "next" => "#{iri}?max_id=#{min_id}"
 284     }
 285
 286     if max_qid == nil do
 287       %{
 288         "id" => iri,
 289         "type" => "OrderedCollection",
 290         "first" => page
 291       }
 292       |> Map.merge(Utils.make_json_ld_header())
 293     else
 294       page |> Map.merge(Utils.make_json_ld_header())
 295     end
 296   end
 297
 298   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
 299     offset = (page - 1) * 10
 300     items = Enum.slice(collection, offset, 10)
 301     items = Enum.map(items, fn user -> user.ap_id end)
 302     total = total || length(collection)
 303
 304     map = %{
 305       "id" => "#{iri}?page=#{page}",
 306       "type" => "OrderedCollectionPage",
 307       "partOf" => iri,
 308       "totalItems" => total,
 309       "orderedItems" => if(show_items, do: items, else: [])
 310     }
 311
 312     if offset < total do
 313       Map.put(map, "next", "#{iri}?page=#{page + 1}")
 314     else
 315       map
 316     end
 317   end
 318
 319   defp maybe_make_image(func, key, user) do
 320     if image = func.(user, no_default: true) do
 321       %{
 322         key => %{
 323           "type" => "Image",
 324           "url" => image
 325         }
 326       }
 327     else
 328       %{}
 329     end
 330   end
 331 end