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(Utils.make_json_ld_header())
  61   end
  62
  63   # the instance itself is not a Person, but instead an Application
  64   def render("user.json", %{user: %User{nickname: nil} = user}),
  65     do: render("service.json", %{user: user})
  66
  67   def render("user.json", %{user: %User{nickname: "internal." <> _} = user}),
  68     do: render("service.json", %{user: user}) |> Map.put("preferredUsername", user.nickname)
  69
  70   def render("user.json", %{user: user}) do
  71     {:ok, user} = User.ensure_keys_present(user)
  72     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  73     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  74     public_key = :public_key.pem_encode([public_key])
  75
  76     endpoints = render("endpoints.json", %{user: user})
  77
  78     emoji_tags = Transmogrifier.take_emoji_tags(user)
  79
  80     fields =
  81       user.info
  82       |> User.Info.fields()
  83       |> Enum.map(fn %{"name" => name, "value" => value} ->
  84         %{
  85           "name" => Pleroma.HTML.strip_tags(name),
  86           "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
  87         }
  88       end)
  89       |> Enum.map(&Map.put(&1, "type", "PropertyValue"))
  90
  91     %{
  92       "id" => user.ap_id,
  93       "type" => "Person",
  94       "following" => "#{user.ap_id}/following",
  95       "followers" => "#{user.ap_id}/followers",
  96       "inbox" => "#{user.ap_id}/inbox",
  97       "outbox" => "#{user.ap_id}/outbox",
  98       "preferredUsername" => user.nickname,
  99       "name" => user.name,
 100       "summary" => user.bio,
 101       "url" => user.ap_id,
 102       "manuallyApprovesFollowers" => user.info.locked,
 103       "publicKey" => %{
 104         "id" => "#{user.ap_id}#main-key",
 105         "owner" => user.ap_id,
 106         "publicKeyPem" => public_key
 107       },
 108       "endpoints" => endpoints,
 109       "attachment" => fields,
 110       "tag" => (user.info.source_data["tag"] || []) ++ emoji_tags
 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("outbox.json", %{user: user, max_id: max_qid}) do
 214     params = %{
 215       "limit" => "10"
 216     }
 217
 218     params =
 219       if max_qid != nil do
 220         Map.put(params, "max_id", max_qid)
 221       else
 222         params
 223       end
 224
 225     activities = ActivityPub.fetch_user_activities(user, nil, params)
 226
 227     {max_id, min_id, collection} =
 228       if length(activities) > 0 do
 229         {
 230           Enum.at(Enum.reverse(activities), 0).id,
 231           Enum.at(activities, 0).id,
 232           Enum.map(activities, fn act ->
 233             {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 234             data
 235           end)
 236         }
 237       else
 238         {
 239           0,
 240           0,
 241           []
 242         }
 243       end
 244
 245     iri = "#{user.ap_id}/outbox"
 246
 247     page = %{
 248       "id" => "#{iri}?max_id=#{max_id}",
 249       "type" => "OrderedCollectionPage",
 250       "partOf" => iri,
 251       "orderedItems" => collection,
 252       "next" => "#{iri}?max_id=#{min_id}"
 253     }
 254
 255     if max_qid == nil do
 256       %{
 257         "id" => iri,
 258         "type" => "OrderedCollection",
 259         "first" => page
 260       }
 261       |> Map.merge(Utils.make_json_ld_header())
 262     else
 263       page |> Map.merge(Utils.make_json_ld_header())
 264     end
 265   end
 266
 267   def render("inbox.json", %{user: user, max_id: max_qid}) do
 268     params = %{
 269       "limit" => "10"
 270     }
 271
 272     params =
 273       if max_qid != nil do
 274         Map.put(params, "max_id", max_qid)
 275       else
 276         params
 277       end
 278
 279     activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
 280
 281     min_id = Enum.at(Enum.reverse(activities), 0).id
 282     max_id = Enum.at(activities, 0).id
 283
 284     collection =
 285       Enum.map(activities, fn act ->
 286         {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 287         data
 288       end)
 289
 290     iri = "#{user.ap_id}/inbox"
 291
 292     page = %{
 293       "id" => "#{iri}?max_id=#{max_id}",
 294       "type" => "OrderedCollectionPage",
 295       "partOf" => iri,
 296       "orderedItems" => collection,
 297       "next" => "#{iri}?max_id=#{min_id}"
 298     }
 299
 300     if max_qid == nil do
 301       %{
 302         "id" => iri,
 303         "type" => "OrderedCollection",
 304         "first" => page
 305       }
 306       |> Map.merge(Utils.make_json_ld_header())
 307     else
 308       page |> Map.merge(Utils.make_json_ld_header())
 309     end
 310   end
 311
 312   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
 313     offset = (page - 1) * 10
 314     items = Enum.slice(collection, offset, 10)
 315     items = Enum.map(items, fn user -> user.ap_id end)
 316     total = total || length(collection)
 317
 318     map = %{
 319       "id" => "#{iri}?page=#{page}",
 320       "type" => "OrderedCollectionPage",
 321       "partOf" => iri,
 322       "totalItems" => total,
 323       "orderedItems" => if(show_items, do: items, else: [])
 324     }
 325
 326     if offset < total do
 327       Map.put(map, "next", "#{iri}?page=#{page + 1}")
 328     else
 329       map
 330     end
 331   end
 332
 333   defp maybe_make_image(func, key, user) do
 334     if image = func.(user, no_default: true) do
 335       %{
 336         key => %{
 337           "type" => "Image",
 338           "url" => image
 339         }
 340       }
 341     else
 342       %{}
 343     end
 344   end
 345 end