git.squeep.com Git - akkoma/blob - lib/pleroma/web/twitter_api/twitter_api.ex

   1 defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
   2   alias Pleroma.{User, Activity, Repo, Object}
   3   alias Pleroma.Web.ActivityPub.ActivityPub
   4   alias Pleroma.Web.TwitterAPI.Representers.{ActivityRepresenter, UserRepresenter}
   5   alias Pleroma.Web.OStatus
   6
   7   import Ecto.Query
   8
   9   def to_for_user_and_mentions(user, mentions) do
  10     default_to = [
  11       User.ap_followers(user),
  12       "https://www.w3.org/ns/activitystreams#Public"
  13     ]
  14
  15     default_to ++ Enum.map(mentions, fn ({_, %{ap_id: ap_id}}) -> ap_id end)
  16   end
  17
  18   def format_input(text, mentions) do
  19     HtmlSanitizeEx.strip_tags(text)
  20     |> String.replace("\n", "<br>")
  21     |> add_user_links(mentions)
  22   end
  23
  24   def attachments_from_ids(ids) do
  25     Enum.map(ids || [], fn (media_id) ->
  26       Repo.get(Object, media_id).data
  27     end)
  28   end
  29
  30   def get_replied_to_activity(id) when not is_nil(id) do
  31     Repo.get(Activity, id)
  32   end
  33
  34   def get_replied_to_activity(_), do: nil
  35
  36   def add_attachments(text, attachments) do
  37     attachment_text = Enum.map(attachments, fn
  38       (%{"url" => [%{"href" => href} | _]}) ->
  39         "<a href='#{href}' class='attachment'>#{href}</a>"
  40       _ -> ""
  41     end)
  42     Enum.join([text | attachment_text], "<br>")
  43     end
  44
  45   def create_status(%User{} = user, %{"status" => status} = data) do
  46     attachments = attachments_from_ids(data["media_ids"])
  47     context = ActivityPub.generate_context_id
  48     mentions = parse_mentions(status)
  49     content_html = status
  50     |> format_input(mentions)
  51     |> add_attachments(attachments)
  52
  53     to = to_for_user_and_mentions(user, mentions)
  54     date = make_date()
  55
  56     inReplyTo = get_replied_to_activity(data["in_reply_to_status_id"])
  57
  58     # Wire up reply info.
  59     [to, context, object, additional] =
  60       if inReplyTo do
  61       context = inReplyTo.data["context"]
  62       to = to ++ [inReplyTo.data["actor"]]
  63
  64       object = %{
  65         "type" => "Note",
  66         "to" => to,
  67         "content" => content_html,
  68         "published" => date,
  69         "context" => context,
  70         "attachment" => attachments,
  71         "actor" => user.ap_id,
  72         "inReplyTo" => inReplyTo.data["object"]["id"],
  73         "inReplyToStatusId" => inReplyTo.id,
  74       }
  75       additional = %{}
  76
  77       [to, context, object, additional]
  78       else
  79       object = %{
  80         "type" => "Note",
  81         "to" => to,
  82         "content" => content_html,
  83         "published" => date,
  84         "context" => context,
  85         "attachment" => attachments,
  86         "actor" => user.ap_id
  87       }
  88       [to, context, object, %{}]
  89     end
  90
  91     ActivityPub.create(to, user, context, object, additional, data)
  92   end
  93
  94   def fetch_friend_statuses(user, opts \\ %{}) do
  95     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  96     |> activities_to_statuses(%{for: user})
  97   end
  98
  99   def fetch_public_statuses(user, opts \\ %{}) do
 100     opts = Map.put(opts, "local_only", true)
 101     ActivityPub.fetch_public_activities(opts)
 102     |> activities_to_statuses(%{for: user})
 103   end
 104
 105   def fetch_public_and_external_statuses(user, opts \\ %{}) do
 106     ActivityPub.fetch_public_activities(opts)
 107     |> activities_to_statuses(%{for: user})
 108   end
 109
 110   def fetch_user_statuses(user, opts \\ %{}) do
 111     ActivityPub.fetch_activities([], opts)
 112     |> activities_to_statuses(%{for: user})
 113   end
 114
 115   def fetch_mentions(user, opts \\ %{}) do
 116     ActivityPub.fetch_activities([user.ap_id], opts)
 117     |> activities_to_statuses(%{for: user})
 118   end
 119
 120   def fetch_conversation(user, id) do
 121     with context when is_binary(context) <- conversation_id_to_context(id),
 122          activities <- ActivityPub.fetch_activities_for_context(context),
 123          statuses <- activities |> activities_to_statuses(%{for: user})
 124     do
 125       statuses
 126     else _e ->
 127       []
 128     end
 129   end
 130
 131   def fetch_status(user, id) do
 132     with %Activity{} = activity <- Repo.get(Activity, id) do
 133       activity_to_status(activity, %{for: user})
 134     end
 135   end
 136
 137   def follow(%User{} = follower, params) do
 138     with {:ok, %User{} = followed} <- get_user(params),
 139          {:ok, follower} <- User.follow(follower, followed),
 140          {:ok, activity} <- ActivityPub.follow(follower, followed)
 141     do
 142       {:ok, follower, followed, activity}
 143     else
 144       err -> err
 145     end
 146   end
 147
 148   def unfollow(%User{} = follower, params) do
 149     with { :ok, %User{} = unfollowed } <- get_user(params),
 150          { :ok, follower, follow_activity } <- User.unfollow(follower, unfollowed),
 151          { :ok, _activity } <- ActivityPub.insert(%{
 152            "type" => "Undo",
 153            "actor" => follower.ap_id,
 154            "object" => follow_activity.data["id"], # get latest Follow for these users
 155            "published" => make_date()
 156          })
 157     do
 158       { :ok, follower, unfollowed }
 159     else
 160       err -> err
 161     end
 162   end
 163
 164   def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 165     object = Object.get_by_ap_id(object["id"])
 166
 167     {:ok, _like_activity, object} = ActivityPub.like(user, object)
 168     new_data = activity.data
 169     |> Map.put("object", object.data)
 170
 171     status = %{activity | data: new_data}
 172     |> activity_to_status(%{for: user})
 173
 174     {:ok, status}
 175   end
 176
 177   def unfavorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 178     object = Object.get_by_ap_id(object["id"])
 179
 180     {:ok, object} = ActivityPub.unlike(user, object)
 181     new_data = activity.data
 182     |> Map.put("object", object.data)
 183
 184     status = %{activity | data: new_data}
 185     |> activity_to_status(%{for: user})
 186
 187     {:ok, status}
 188   end
 189
 190   def retweet(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 191     object = Object.get_by_ap_id(object["id"])
 192
 193     {:ok, _announce_activity, object} = ActivityPub.announce(user, object)
 194     new_data = activity.data
 195     |> Map.put("object", object.data)
 196
 197     status = %{activity | data: new_data}
 198     |> activity_to_status(%{for: user})
 199
 200     {:ok, status}
 201   end
 202
 203   def upload(%Plug.Upload{} = file, format \\ "xml") do
 204     {:ok, object} = ActivityPub.upload(file)
 205
 206     url = List.first(object.data["url"])
 207     href = url["href"]
 208     type = url["mediaType"]
 209
 210     case format do
 211       "xml" ->
 212         # Fake this as good as possible...
 213         """
 214         <?xml version="1.0" encoding="UTF-8"?>
 215         <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 216         <mediaid>#{object.id}</mediaid>
 217         <media_id>#{object.id}</media_id>
 218         <media_id_string>#{object.id}</media_id_string>
 219         <media_url>#{href}</media_url>
 220         <mediaurl>#{href}</mediaurl>
 221         <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 222         </rsp>
 223         """
 224       "json" ->
 225         %{
 226           media_id: object.id,
 227           media_id_string: "#{object.id}}",
 228           media_url: href,
 229           size: 0
 230         } |> Poison.encode!
 231     end
 232   end
 233
 234   def parse_mentions(text) do
 235     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 236     regex = ~r/@[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@?[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*/
 237
 238     Regex.scan(regex, text)
 239     |> List.flatten
 240     |> Enum.uniq
 241     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, User.get_cached_by_nickname(match)} end)
 242     |> Enum.filter(fn ({_match, user}) -> user end)
 243   end
 244
 245   def add_user_links(text, mentions) do
 246     Enum.reduce(mentions, text, fn ({match, %User{ap_id: ap_id}}, text) -> String.replace(text, match, "<a href='#{ap_id}'>#{match}</a>") end)
 247   end
 248
 249   def register_user(params) do
 250     params = %{
 251       nickname: params["nickname"],
 252       name: params["fullname"],
 253       bio: params["bio"],
 254       email: params["email"],
 255       password: params["password"],
 256       password_confirmation: params["confirm"]
 257     }
 258
 259     changeset = User.register_changeset(%User{}, params)
 260
 261     with {:ok, user} <- Repo.insert(changeset) do
 262       {:ok, UserRepresenter.to_map(user)}
 263     else
 264       {:error, changeset} ->
 265         errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
 266       |> Poison.encode!
 267       {:error, %{error: errors}}
 268     end
 269   end
 270
 271   def get_user(user \\ nil, params) do
 272     case params do
 273       %{"user_id" => user_id} ->
 274         case target = Repo.get(User, user_id) do
 275           nil ->
 276             {:error, "No user with such user_id"}
 277           _ ->
 278             {:ok, target}
 279         end
 280       %{"screen_name" => nickname} ->
 281         case target = Repo.get_by(User, nickname: nickname) do
 282           nil ->
 283             {:error, "No user with such screen_name"}
 284           _ ->
 285             {:ok, target}
 286         end
 287       _ ->
 288         if user do
 289           {:ok, user}
 290         else
 291           {:error, "You need to specify screen_name or user_id"}
 292         end
 293     end
 294   end
 295
 296   defp activities_to_statuses(activities, opts) do
 297     Enum.map(activities, fn(activity) ->
 298       activity_to_status(activity, opts)
 299     end)
 300   end
 301
 302   # For likes, fetch the liked activity, too.
 303   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 304     actor = get_in(activity.data, ["actor"])
 305     user = User.get_cached_by_ap_id(actor)
 306     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 307
 308     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 309   end
 310
 311   # For announces, fetch the announced activity and the user.
 312   defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
 313     actor = get_in(activity.data, ["actor"])
 314     user = User.get_cached_by_ap_id(actor)
 315     [announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 316     announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
 317
 318     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
 319   end
 320
 321   defp activity_to_status(activity, opts) do
 322     actor = get_in(activity.data, ["actor"])
 323     user = User.get_cached_by_ap_id(actor)
 324     # mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 325     mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
 326       User.get_cached_by_ap_id(ap_id)
 327     end)
 328     |> Enum.filter(&(&1))
 329
 330     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 331   end
 332
 333   defp make_date do
 334     DateTime.utc_now() |> DateTime.to_iso8601
 335   end
 336
 337   def context_to_conversation_id(context) do
 338     with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
 339       id
 340     else _e ->
 341       changeset = Object.context_mapping(context)
 342       {:ok, %{id: id}} = Repo.insert(changeset)
 343       id
 344     end
 345   end
 346
 347   def conversation_id_to_context(id) do
 348     with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
 349       context
 350     else _e ->
 351       {:error, "No such conversation"}
 352     end
 353   end
 354
 355   def get_external_profile(for_user, uri) do
 356     with {:ok, %User{} = user} <- OStatus.find_or_make_user(uri) do
 357       {:ok, UserRepresenter.to_map(user, %{for: for_user})}
 358     else _e ->
 359         {:error, "Couldn't find user"}
 360     end
 361   end
 362 end