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.ActivityPub.Utils
   5   alias Pleroma.Web.TwitterAPI.Representers.{ActivityRepresenter, UserRepresenter}
   6   alias Pleroma.Web.OStatus
   7
   8   import Ecto.Query
   9
  10   def to_for_user_and_mentions(user, mentions) do
  11     default_to = [
  12       User.ap_followers(user),
  13       "https://www.w3.org/ns/activitystreams#Public"
  14     ]
  15
  16     default_to ++ Enum.map(mentions, fn ({_, %{ap_id: ap_id}}) -> ap_id end)
  17   end
  18
  19   def format_input(text, mentions) do
  20     HtmlSanitizeEx.strip_tags(text)
  21     |> String.replace("\n", "<br>")
  22     |> add_user_links(mentions)
  23   end
  24
  25   def attachments_from_ids(ids) do
  26     Enum.map(ids || [], fn (media_id) ->
  27       Repo.get(Object, media_id).data
  28     end)
  29   end
  30
  31   def get_replied_to_activity(id) when not is_nil(id) do
  32     Repo.get(Activity, id)
  33   end
  34
  35   def get_replied_to_activity(_), do: nil
  36
  37   def add_attachments(text, attachments) do
  38     attachment_text = Enum.map(attachments, fn
  39       (%{"url" => [%{"href" => href} | _]}) ->
  40         "<a href='#{href}' class='attachment'>#{href}</a>"
  41       _ -> ""
  42     end)
  43     Enum.join([text | attachment_text], "<br>")
  44     end
  45
  46   def create_status(%User{} = user, %{"status" => status} = data) do
  47     attachments = attachments_from_ids(data["media_ids"])
  48     context = Utils.generate_context_id
  49     mentions = parse_mentions(status)
  50     content_html = status
  51     |> format_input(mentions)
  52     |> add_attachments(attachments)
  53
  54     to = to_for_user_and_mentions(user, mentions)
  55     date = make_date()
  56
  57     inReplyTo = get_replied_to_activity(data["in_reply_to_status_id"])
  58
  59     # Wire up reply info.
  60     [to, context, object, additional] =
  61       if inReplyTo do
  62       context = inReplyTo.data["context"]
  63       to = to ++ [inReplyTo.data["actor"]]
  64
  65       object = %{
  66         "type" => "Note",
  67         "to" => to,
  68         "content" => content_html,
  69         "published" => date,
  70         "context" => context,
  71         "attachment" => attachments,
  72         "actor" => user.ap_id,
  73         "inReplyTo" => inReplyTo.data["object"]["id"],
  74         "inReplyToStatusId" => inReplyTo.id,
  75       }
  76       additional = %{}
  77
  78       [to, context, object, additional]
  79       else
  80       object = %{
  81         "type" => "Note",
  82         "to" => to,
  83         "content" => content_html,
  84         "published" => date,
  85         "context" => context,
  86         "attachment" => attachments,
  87         "actor" => user.ap_id
  88       }
  89       [to, context, object, %{}]
  90     end
  91
  92     ActivityPub.create(to, user, context, object, additional, data)
  93   end
  94
  95   def fetch_friend_statuses(user, opts \\ %{}) do
  96     ActivityPub.fetch_activities([user.ap_id | user.following], opts)
  97     |> activities_to_statuses(%{for: user})
  98   end
  99
 100   def fetch_public_statuses(user, opts \\ %{}) do
 101     opts = Map.put(opts, "local_only", true)
 102     ActivityPub.fetch_public_activities(opts)
 103     |> activities_to_statuses(%{for: user})
 104   end
 105
 106   def fetch_public_and_external_statuses(user, opts \\ %{}) do
 107     ActivityPub.fetch_public_activities(opts)
 108     |> activities_to_statuses(%{for: user})
 109   end
 110
 111   def fetch_user_statuses(user, opts \\ %{}) do
 112     ActivityPub.fetch_activities([], opts)
 113     |> activities_to_statuses(%{for: user})
 114   end
 115
 116   def fetch_mentions(user, opts \\ %{}) do
 117     ActivityPub.fetch_activities([user.ap_id], opts)
 118     |> activities_to_statuses(%{for: user})
 119   end
 120
 121   def fetch_conversation(user, id) do
 122     with context when is_binary(context) <- conversation_id_to_context(id),
 123          activities <- ActivityPub.fetch_activities_for_context(context),
 124          statuses <- activities |> activities_to_statuses(%{for: user})
 125     do
 126       statuses
 127     else _e ->
 128       []
 129     end
 130   end
 131
 132   def fetch_status(user, id) do
 133     with %Activity{} = activity <- Repo.get(Activity, id) do
 134       activity_to_status(activity, %{for: user})
 135     end
 136   end
 137
 138   def follow(%User{} = follower, params) do
 139     with {:ok, %User{} = followed} <- get_user(params),
 140          {:ok, follower} <- User.follow(follower, followed),
 141          {:ok, activity} <- ActivityPub.follow(follower, followed)
 142     do
 143       {:ok, follower, followed, activity}
 144     else
 145       err -> err
 146     end
 147   end
 148
 149   def unfollow(%User{} = follower, params) do
 150     with { :ok, %User{} = unfollowed } <- get_user(params),
 151          { :ok, follower, follow_activity } <- User.unfollow(follower, unfollowed),
 152          { :ok, _activity } <- ActivityPub.insert(%{
 153            "type" => "Undo",
 154            "actor" => follower.ap_id,
 155            "object" => follow_activity.data["id"], # get latest Follow for these users
 156            "published" => make_date()
 157          })
 158     do
 159       { :ok, follower, unfollowed }
 160     else
 161       err -> err
 162     end
 163   end
 164
 165   def favorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 166     object = Object.get_by_ap_id(object["id"])
 167
 168     {:ok, _like_activity, object} = ActivityPub.like(user, object)
 169     new_data = activity.data
 170     |> Map.put("object", object.data)
 171
 172     status = %{activity | data: new_data}
 173     |> activity_to_status(%{for: user})
 174
 175     {:ok, status}
 176   end
 177
 178   def unfavorite(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 179     object = Object.get_by_ap_id(object["id"])
 180
 181     {:ok, object} = ActivityPub.unlike(user, object)
 182     new_data = activity.data
 183     |> Map.put("object", object.data)
 184
 185     status = %{activity | data: new_data}
 186     |> activity_to_status(%{for: user})
 187
 188     {:ok, status}
 189   end
 190
 191   def retweet(%User{} = user, %Activity{data: %{"object" => object}} = activity) do
 192     object = Object.get_by_ap_id(object["id"])
 193
 194     {:ok, _announce_activity, object} = ActivityPub.announce(user, object)
 195     new_data = activity.data
 196     |> Map.put("object", object.data)
 197
 198     status = %{activity | data: new_data}
 199     |> activity_to_status(%{for: user})
 200
 201     {:ok, status}
 202   end
 203
 204   def upload(%Plug.Upload{} = file, format \\ "xml") do
 205     {:ok, object} = ActivityPub.upload(file)
 206
 207     url = List.first(object.data["url"])
 208     href = url["href"]
 209     type = url["mediaType"]
 210
 211     case format do
 212       "xml" ->
 213         # Fake this as good as possible...
 214         """
 215         <?xml version="1.0" encoding="UTF-8"?>
 216         <rsp stat="ok" xmlns:atom="http://www.w3.org/2005/Atom">
 217         <mediaid>#{object.id}</mediaid>
 218         <media_id>#{object.id}</media_id>
 219         <media_id_string>#{object.id}</media_id_string>
 220         <media_url>#{href}</media_url>
 221         <mediaurl>#{href}</mediaurl>
 222         <atom:link rel="enclosure" href="#{href}" type="#{type}"></atom:link>
 223         </rsp>
 224         """
 225       "json" ->
 226         %{
 227           media_id: object.id,
 228           media_id_string: "#{object.id}}",
 229           media_url: href,
 230           size: 0
 231         } |> Poison.encode!
 232     end
 233   end
 234
 235   def parse_mentions(text) do
 236     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
 237     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])?)*/
 238
 239     Regex.scan(regex, text)
 240     |> List.flatten
 241     |> Enum.uniq
 242     |> Enum.map(fn ("@" <> match = full_match) -> {full_match, User.get_cached_by_nickname(match)} end)
 243     |> Enum.filter(fn ({_match, user}) -> user end)
 244   end
 245
 246   def add_user_links(text, mentions) do
 247     mentions = mentions
 248     |> Enum.sort_by(fn ({name, _}) -> -String.length(name) end)
 249     |> Enum.map(fn({name, user}) -> {name, user, Ecto.UUID.generate} end)
 250
 251     # This replaces the mention with a unique reference first so it doesn't
 252     # contain parts of other replaced mentions. There probably is a better
 253     # solution for this...
 254     step_one = mentions
 255     |> Enum.reduce(text, fn ({match, _user, uuid}, text) ->
 256       String.replace(text, match, uuid)
 257     end)
 258
 259     Enum.reduce(mentions, step_one, fn ({match, %User{ap_id: ap_id}, uuid}, text) ->
 260       String.replace(text, uuid, "<a href='#{ap_id}'>#{match}</a>")
 261     end)
 262   end
 263
 264   def register_user(params) do
 265     params = %{
 266       nickname: params["nickname"],
 267       name: params["fullname"],
 268       bio: params["bio"],
 269       email: params["email"],
 270       password: params["password"],
 271       password_confirmation: params["confirm"]
 272     }
 273
 274     changeset = User.register_changeset(%User{}, params)
 275
 276     with {:ok, user} <- Repo.insert(changeset) do
 277       {:ok, UserRepresenter.to_map(user)}
 278     else
 279       {:error, changeset} ->
 280         errors = Ecto.Changeset.traverse_errors(changeset, fn {msg, _opts} -> msg end)
 281       |> Poison.encode!
 282       {:error, %{error: errors}}
 283     end
 284   end
 285
 286   def get_user(user \\ nil, params) do
 287     case params do
 288       %{"user_id" => user_id} ->
 289         case target = Repo.get(User, user_id) do
 290           nil ->
 291             {:error, "No user with such user_id"}
 292           _ ->
 293             {:ok, target}
 294         end
 295       %{"screen_name" => nickname} ->
 296         case target = Repo.get_by(User, nickname: nickname) do
 297           nil ->
 298             {:error, "No user with such screen_name"}
 299           _ ->
 300             {:ok, target}
 301         end
 302       _ ->
 303         if user do
 304           {:ok, user}
 305         else
 306           {:error, "You need to specify screen_name or user_id"}
 307         end
 308     end
 309   end
 310
 311   defp activities_to_statuses(activities, opts) do
 312     Enum.map(activities, fn(activity) ->
 313       activity_to_status(activity, opts)
 314     end)
 315   end
 316
 317   # For likes, fetch the liked activity, too.
 318   defp activity_to_status(%Activity{data: %{"type" => "Like"}} = activity, opts) do
 319     actor = get_in(activity.data, ["actor"])
 320     user = User.get_cached_by_ap_id(actor)
 321     [liked_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 322
 323     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, liked_activity: liked_activity}))
 324   end
 325
 326   # For announces, fetch the announced activity and the user.
 327   defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opts) do
 328     actor = get_in(activity.data, ["actor"])
 329     user = User.get_cached_by_ap_id(actor)
 330     [announced_activity] = Activity.all_by_object_ap_id(activity.data["object"])
 331     announced_actor = User.get_cached_by_ap_id(announced_activity.data["actor"])
 332
 333     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
 334   end
 335
 336   defp activity_to_status(activity, opts) do
 337     actor = get_in(activity.data, ["actor"])
 338     user = User.get_cached_by_ap_id(actor)
 339     # mentioned_users = Repo.all(from user in User, where: user.ap_id in ^activity.data["to"])
 340     mentioned_users = Enum.map(activity.data["to"] || [], fn (ap_id) ->
 341       User.get_cached_by_ap_id(ap_id)
 342     end)
 343     |> Enum.filter(&(&1))
 344
 345     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user, mentioned: mentioned_users}))
 346   end
 347
 348   defp make_date do
 349     DateTime.utc_now() |> DateTime.to_iso8601
 350   end
 351
 352   def context_to_conversation_id(context) do
 353     with %Object{id: id} <- Object.get_cached_by_ap_id(context) do
 354       id
 355     else _e ->
 356       changeset = Object.context_mapping(context)
 357       {:ok, %{id: id}} = Repo.insert(changeset)
 358       id
 359     end
 360   end
 361
 362   def conversation_id_to_context(id) do
 363     with %Object{data: %{"id" => context}} <- Repo.get(Object, id) do
 364       context
 365     else _e ->
 366       {:error, "No such conversation"}
 367     end
 368   end
 369
 370   def get_external_profile(for_user, uri) do
 371     with {:ok, %User{} = user} <- OStatus.find_or_make_user(uri) do
 372       {:ok, UserRepresenter.to_map(user, %{for: for_user})}
 373     else _e ->
 374         {:error, "Couldn't find user"}
 375     end
 376   end
 377 end