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   # the instance itself is not a Person, but instead an Application
  35   def render("user.json", %{user: %{nickname: nil} = user}) do
  36     {:ok, user} = User.ensure_keys_present(user)
  37     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  38     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  39     public_key = :public_key.pem_encode([public_key])
  40
  41     endpoints = render("endpoints.json", %{user: user})
  42
  43     %{
  44       "id" => user.ap_id,
  45       "type" => "Application",
  46       "following" => "#{user.ap_id}/following",
  47       "followers" => "#{user.ap_id}/followers",
  48       "inbox" => "#{user.ap_id}/inbox",
  49       "name" => "Pleroma",
  50       "summary" => "Virtual actor for Pleroma relay",
  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   def render("user.json", %{user: user}) do
  64     {:ok, user} = User.ensure_keys_present(user)
  65     {:ok, _, public_key} = Keys.keys_from_pem(user.info.keys)
  66     public_key = :public_key.pem_entry_encode(:SubjectPublicKeyInfo, public_key)
  67     public_key = :public_key.pem_encode([public_key])
  68
  69     endpoints = render("endpoints.json", %{user: user})
  70
  71     user_tags =
  72       user
  73       |> Transmogrifier.add_emoji_tags()
  74       |> Map.get("tag", [])
  75
  76     %{
  77       "id" => user.ap_id,
  78       "type" => "Person",
  79       "following" => "#{user.ap_id}/following",
  80       "followers" => "#{user.ap_id}/followers",
  81       "inbox" => "#{user.ap_id}/inbox",
  82       "outbox" => "#{user.ap_id}/outbox",
  83       "preferredUsername" => user.nickname,
  84       "name" => user.name,
  85       "summary" => user.bio,
  86       "url" => user.ap_id,
  87       "manuallyApprovesFollowers" => user.info.locked,
  88       "publicKey" => %{
  89         "id" => "#{user.ap_id}#main-key",
  90         "owner" => user.ap_id,
  91         "publicKeyPem" => public_key
  92       },
  93       "endpoints" => endpoints,
  94       "tag" => (user.info.source_data["tag"] || []) ++ user_tags
  95     }
  96     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
  97     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))
  98     |> Map.merge(Utils.make_json_ld_header())
  99   end
 100
 101   def render("following.json", %{user: user, page: page}) do
 102     query = User.get_friends_query(user)
 103     query = from(user in query, select: [:ap_id])
 104     following = Repo.all(query)
 105
 106     total =
 107       if !user.info.hide_follows do
 108         length(following)
 109       else
 110         0
 111       end
 112
 113     collection(following, "#{user.ap_id}/following", page, !user.info.hide_follows, total)
 114     |> Map.merge(Utils.make_json_ld_header())
 115   end
 116
 117   def render("following.json", %{user: user}) do
 118     query = User.get_friends_query(user)
 119     query = from(user in query, select: [:ap_id])
 120     following = Repo.all(query)
 121
 122     total =
 123       if !user.info.hide_follows do
 124         length(following)
 125       else
 126         0
 127       end
 128
 129     %{
 130       "id" => "#{user.ap_id}/following",
 131       "type" => "OrderedCollection",
 132       "totalItems" => total,
 133       "first" => collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
 134     }
 135     |> Map.merge(Utils.make_json_ld_header())
 136   end
 137
 138   def render("followers.json", %{user: user, page: page}) do
 139     query = User.get_followers_query(user)
 140     query = from(user in query, select: [:ap_id])
 141     followers = Repo.all(query)
 142
 143     total =
 144       if !user.info.hide_followers do
 145         length(followers)
 146       else
 147         0
 148       end
 149
 150     collection(followers, "#{user.ap_id}/followers", page, !user.info.hide_followers, total)
 151     |> Map.merge(Utils.make_json_ld_header())
 152   end
 153
 154   def render("followers.json", %{user: user}) do
 155     query = User.get_followers_query(user)
 156     query = from(user in query, select: [:ap_id])
 157     followers = Repo.all(query)
 158
 159     total =
 160       if !user.info.hide_followers do
 161         length(followers)
 162       else
 163         0
 164       end
 165
 166     %{
 167       "id" => "#{user.ap_id}/followers",
 168       "type" => "OrderedCollection",
 169       "totalItems" => total,
 170       "first" =>
 171         collection(followers, "#{user.ap_id}/followers", 1, !user.info.hide_followers, total)
 172     }
 173     |> Map.merge(Utils.make_json_ld_header())
 174   end
 175
 176   def render("outbox.json", %{user: user, max_id: max_qid}) do
 177     params = %{
 178       "limit" => "10"
 179     }
 180
 181     params =
 182       if max_qid != nil do
 183         Map.put(params, "max_id", max_qid)
 184       else
 185         params
 186       end
 187
 188     activities = ActivityPub.fetch_user_activities(user, nil, params)
 189
 190     {max_id, min_id, collection} =
 191       if length(activities) > 0 do
 192         {
 193           Enum.at(Enum.reverse(activities), 0).id,
 194           Enum.at(activities, 0).id,
 195           Enum.map(activities, fn act ->
 196             {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 197             data
 198           end)
 199         }
 200       else
 201         {
 202           0,
 203           0,
 204           []
 205         }
 206       end
 207
 208     iri = "#{user.ap_id}/outbox"
 209
 210     page = %{
 211       "id" => "#{iri}?max_id=#{max_id}",
 212       "type" => "OrderedCollectionPage",
 213       "partOf" => iri,
 214       "orderedItems" => collection,
 215       "next" => "#{iri}?max_id=#{min_id}"
 216     }
 217
 218     if max_qid == nil do
 219       %{
 220         "id" => iri,
 221         "type" => "OrderedCollection",
 222         "first" => page
 223       }
 224       |> Map.merge(Utils.make_json_ld_header())
 225     else
 226       page |> Map.merge(Utils.make_json_ld_header())
 227     end
 228   end
 229
 230   def render("inbox.json", %{user: user, max_id: max_qid}) do
 231     params = %{
 232       "limit" => "10"
 233     }
 234
 235     params =
 236       if max_qid != nil do
 237         Map.put(params, "max_id", max_qid)
 238       else
 239         params
 240       end
 241
 242     activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
 243
 244     min_id = Enum.at(Enum.reverse(activities), 0).id
 245     max_id = Enum.at(activities, 0).id
 246
 247     collection =
 248       Enum.map(activities, fn act ->
 249         {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 250         data
 251       end)
 252
 253     iri = "#{user.ap_id}/inbox"
 254
 255     page = %{
 256       "id" => "#{iri}?max_id=#{max_id}",
 257       "type" => "OrderedCollectionPage",
 258       "partOf" => iri,
 259       "orderedItems" => collection,
 260       "next" => "#{iri}?max_id=#{min_id}"
 261     }
 262
 263     if max_qid == nil do
 264       %{
 265         "id" => iri,
 266         "type" => "OrderedCollection",
 267         "first" => page
 268       }
 269       |> Map.merge(Utils.make_json_ld_header())
 270     else
 271       page |> Map.merge(Utils.make_json_ld_header())
 272     end
 273   end
 274
 275   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
 276     offset = (page - 1) * 10
 277     items = Enum.slice(collection, offset, 10)
 278     items = Enum.map(items, fn user -> user.ap_id end)
 279     total = total || length(collection)
 280
 281     map = %{
 282       "id" => "#{iri}?page=#{page}",
 283       "type" => "OrderedCollectionPage",
 284       "partOf" => iri,
 285       "totalItems" => total,
 286       "orderedItems" => if(show_items, do: items, else: [])
 287     }
 288
 289     if offset < total do
 290       Map.put(map, "next", "#{iri}?page=#{page + 1}")
 291     else
 292       map
 293     end
 294   end
 295
 296   defp maybe_make_image(func, key, user) do
 297     if image = func.(user, no_default: true) do
 298       %{
 299         key => %{
 300           "type" => "Image",
 301           "url" => image
 302         }
 303       }
 304     else
 305       %{}
 306     end
 307   end
 308 end