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.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.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     user_tags =
  78       user
  79       |> Transmogrifier.add_emoji_tags()
  80       |> Map.get("tag", [])
  81
  82     fields =
  83       user.info
  84       |> User.Info.fields()
  85       |> Enum.map(fn %{"name" => name, "value" => value} ->
  86         %{
  87           "name" => Pleroma.HTML.strip_tags(name),
  88           "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
  89         }
  90       end)
  91       |> Enum.map(&Map.put(&1, "type", "PropertyValue"))
  92
  93     %{
  94       "id" => user.ap_id,
  95       "type" => "Person",
  96       "following" => "#{user.ap_id}/following",
  97       "followers" => "#{user.ap_id}/followers",
  98       "inbox" => "#{user.ap_id}/inbox",
  99       "outbox" => "#{user.ap_id}/outbox",
 100       "preferredUsername" => user.nickname,
 101       "name" => user.name,
 102       "summary" => user.bio,
 103       "url" => user.ap_id,
 104       "manuallyApprovesFollowers" => user.info.locked,
 105       "publicKey" => %{
 106         "id" => "#{user.ap_id}#main-key",
 107         "owner" => user.ap_id,
 108         "publicKeyPem" => public_key
 109       },
 110       "endpoints" => endpoints,
 111       "attachment" => fields,
 112       "tag" => (user.info.source_data["tag"] || []) ++ user_tags
 113     }
 114     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
 115     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))
 116     |> Map.merge(Utils.make_json_ld_header())
 117   end
 118
 119   def render("following.json", %{user: user, page: page} = opts) do
 120     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 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 do
 127         length(following)
 128       else
 129         0
 130       end
 131
 132     collection(following, "#{user.ap_id}/following", page, showing, total)
 133     |> Map.merge(Utils.make_json_ld_header())
 134   end
 135
 136   def render("following.json", %{user: user} = opts) do
 137     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
 138     query = User.get_friends_query(user)
 139     query = from(user in query, select: [:ap_id])
 140     following = Repo.all(query)
 141
 142     total =
 143       if showing do
 144         length(following)
 145       else
 146         0
 147       end
 148
 149     %{
 150       "id" => "#{user.ap_id}/following",
 151       "type" => "OrderedCollection",
 152       "totalItems" => total,
 153       "first" =>
 154         if showing do
 155           collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
 156         else
 157           "#{user.ap_id}/following?page=1"
 158         end
 159     }
 160     |> Map.merge(Utils.make_json_ld_header())
 161   end
 162
 163   def render("followers.json", %{user: user, page: page} = opts) do
 164     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 165
 166     query = User.get_followers_query(user)
 167     query = from(user in query, select: [:ap_id])
 168     followers = Repo.all(query)
 169
 170     total =
 171       if showing do
 172         length(followers)
 173       else
 174         0
 175       end
 176
 177     collection(followers, "#{user.ap_id}/followers", page, showing, total)
 178     |> Map.merge(Utils.make_json_ld_header())
 179   end
 180
 181   def render("followers.json", %{user: user} = opts) do
 182     showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
 183
 184     query = User.get_followers_query(user)
 185     query = from(user in query, select: [:ap_id])
 186     followers = Repo.all(query)
 187
 188     total =
 189       if showing do
 190         length(followers)
 191       else
 192         0
 193       end
 194
 195     %{
 196       "id" => "#{user.ap_id}/followers",
 197       "type" => "OrderedCollection",
 198       "totalItems" => total,
 199       "first" =>
 200         if showing do
 201           collection(followers, "#{user.ap_id}/followers", 1, showing, total)
 202         else
 203           "#{user.ap_id}/followers?page=1"
 204         end
 205     }
 206     |> Map.merge(Utils.make_json_ld_header())
 207   end
 208
 209   def render("activity_collection.json", %{iri: iri}) do
 210     %{
 211       "id" => iri,
 212       "type" => "OrderedCollection",
 213       "first" => "#{iri}?page=true"
 214     }
 215     |> Map.merge(Utils.make_json_ld_header())
 216   end
 217
 218   def render("activity_collection_page.json", %{activities: activities, iri: iri}) do
 219     # this is sorted chronologically, so first activity is the newest (max)
 220     {max_id, min_id, collection} =
 221       if length(activities) > 0 do
 222         {
 223           Enum.at(activities, 0).id,
 224           Enum.at(Enum.reverse(activities), 0).id,
 225           Enum.map(activities, fn act ->
 226             {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
 227             data
 228           end)
 229         }
 230       else
 231         {
 232           0,
 233           0,
 234           []
 235         }
 236       end
 237
 238     %{
 239       "id" => "#{iri}?max_id=#{max_id}&page=true",
 240       "type" => "OrderedCollectionPage",
 241       "partOf" => iri,
 242       "orderedItems" => collection,
 243       "next" => "#{iri}?max_id=#{min_id}&page=true"
 244     }
 245     |> Map.merge(Utils.make_json_ld_header())
 246   end
 247
 248   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
 249     offset = (page - 1) * 10
 250     items = Enum.slice(collection, offset, 10)
 251     items = Enum.map(items, fn user -> user.ap_id end)
 252     total = total || length(collection)
 253
 254     map = %{
 255       "id" => "#{iri}?page=#{page}",
 256       "type" => "OrderedCollectionPage",
 257       "partOf" => iri,
 258       "totalItems" => total,
 259       "orderedItems" => if(show_items, do: items, else: [])
 260     }
 261
 262     if offset < total do
 263       Map.put(map, "next", "#{iri}?page=#{page + 1}")
 264     else
 265       map
 266     end
 267   end
 268
 269   defp maybe_make_image(func, key, user) do
 270     if image = func.(user, no_default: true) do
 271       %{
 272         key => %{
 273           "type" => "Image",
 274           "url" => image
 275         }
 276       }
 277     else
 278       %{}
 279     end
 280   end
 281 end