fix format

Modified-by: Maksim Pechnikov <parallel588@gmail.com>

lib/pleroma/web/oauth/oauth_controller.ex

@@ -13,11 +13,15 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   alias Pleroma.Web.OAuth.App
   alias Pleroma.Web.OAuth.Authorization
   alias Pleroma.Web.OAuth.Token
+  alias Pleroma.Web.OAuth.Token.Strategy.RefreshToken
+  alias Pleroma.Web.OAuth.Token.Strategy.Revoke, as: RevokeToken
 
   import Pleroma.Web.ControllerHelper, only: [oauth_scopes: 2]
 
   if Pleroma.Config.oauth_consumer_enabled?(), do: plug(Ueberauth)
 
+  @expires_in Pleroma.Config.get([:oauth2, :token_expires_in], 600)
+
   plug(:fetch_session)
   plug(:fetch_flash)
 
@@ -138,25 +142,33 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     Authenticator.handle_error(conn, error)
   end
 
+  @doc "Renew access_token with refresh_token"
+  def token_exchange(
+        conn,
+        %{"grant_type" => "refresh_token", "refresh_token" => token} = params
+      ) do
+    with %App{} = app <- get_app_from_request(conn, params),
+         {:ok, %{user: user} = token} <- Token.get_by_refresh_token(app, token),
+         {:ok, token} <- RefreshToken.grant(token) do
+      response_attrs = %{created_at: Token.Utils.format_created_at(token)}
+
+      json(conn, response_token(user, token, response_attrs))
+    else
+      _error ->
+        put_status(conn, 400)
+        |> json(%{error: "Invalid credentials"})
+    end
+  end
+
   def token_exchange(conn, %{"grant_type" => "authorization_code"} = params) do
     with %App{} = app <- get_app_from_request(conn, params),
-         fixed_token = fix_padding(params["code"]),
-         %Authorization{} = auth <-
-           Repo.get_by(Authorization, token: fixed_token, app_id: app.id),
+         fixed_token = Token.Utils.fix_padding(params["code"]),
+         {:ok, auth} <- Authorization.get_by_token(app, fixed_token),
          %User{} = user <- User.get_cached_by_id(auth.user_id),
-         {:ok, token} <- Token.exchange_token(app, auth),
-         {:ok, inserted_at} <- DateTime.from_naive(token.inserted_at, "Etc/UTC") do
-      response = %{
-        token_type: "Bearer",
-        access_token: token.token,
-        refresh_token: token.refresh_token,
-        created_at: DateTime.to_unix(inserted_at),
-        expires_in: 60 * 10,
-        scope: Enum.join(token.scopes, " "),
-        me: user.ap_id
-      }
+         {:ok, token} <- Token.exchange_token(app, auth) do
+      response_attrs = %{created_at: Token.Utils.format_created_at(token)}
 
-      json(conn, response)
+      json(conn, response_token(user, token, response_attrs))
     else
       _error ->
         put_status(conn, 400)
@@ -177,16 +189,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
          true <- Enum.any?(scopes),
          {:ok, auth} <- Authorization.create_authorization(app, user, scopes),
          {:ok, token} <- Token.exchange_token(app, auth) do
-      response = %{
-        token_type: "Bearer",
-        access_token: token.token,
-        refresh_token: token.refresh_token,
-        expires_in: 60 * 10,
-        scope: Enum.join(token.scopes, " "),
-        me: user.ap_id
-      }
-
-      json(conn, response)
+      json(conn, response_token(user, token))
     else
       {:auth_active, false} ->
         # Per https://github.com/tootsuite/mastodon/blob/
@@ -218,10 +221,12 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     token_exchange(conn, params)
   end
 
-  def token_revoke(conn, %{"token" => token} = params) do
+  # Bad request
+  def token_exchange(conn, params), do: bad_request(conn, params)
+
+  def token_revoke(conn, %{"token" => _token} = params) do
     with %App{} = app <- get_app_from_request(conn, params),
-         %Token{} = token <- Repo.get_by(Token, token: token, app_id: app.id),
-         {:ok, %Token{}} <- Repo.delete(token) do
+         {:ok, _token} <- RevokeToken.revoke(app, params) do
       json(conn, %{})
     else
       _error ->
@@ -230,6 +235,15 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     end
   end
 
+  def token_revoke(conn, params), do: bad_request(conn, params)
+
+  # Response for bad request
+  defp bad_request(conn, _) do
+    conn
+    |> put_status(500)
+    |> json(%{error: "Bad request"})
+  end
+
   @doc "Prepares OAuth request to provider for Ueberauth"
   def prepare_request(conn, %{"provider" => provider, "authorization" => auth_attrs}) do
     scope =
@@ -278,25 +292,22 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     params = callback_params(params)
 
     with {:ok, registration} <- Authenticator.get_registration(conn) do
-      user = Repo.preload(registration, :user).user
       auth_attrs = Map.take(params, ~w(client_id redirect_uri scope scopes state))
 
-      if user do
-        create_authorization(
-          conn,
-          %{"authorization" => auth_attrs},
-          user: user
-        )
-      else
-        registration_params =
-          Map.merge(auth_attrs, %{
-            "nickname" => Registration.nickname(registration),
-            "email" => Registration.email(registration)
-          })
+      case Repo.get_assoc(registration, :user) do
+        {:ok, user} ->
+          create_authorization(conn, %{"authorization" => auth_attrs}, user: user)
 
-        conn
-        |> put_session(:registration_id, registration.id)
-        |> registration_details(%{"authorization" => registration_params})
+        _ ->
+          registration_params =
+            Map.merge(auth_attrs, %{
+              "nickname" => Registration.nickname(registration),
+              "email" => Registration.email(registration)
+            })
+
+          conn
+          |> put_session(:registration_id, registration.id)
+          |> registration_details(%{"authorization" => registration_params})
       end
     else
       _ ->
@@ -399,36 +410,30 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     end
   end
 
-  # XXX - for whatever reason our token arrives urlencoded, but Plug.Conn should be
-  # decoding it.  Investigate sometime.
-  defp fix_padding(token) do
-    token
-    |> URI.decode()
-    |> Base.url_decode64!(padding: false)
-    |> Base.url_encode64(padding: false)
+  defp get_app_from_request(conn, params) do
+    conn
+    |> fetch_client_credentials(params)
+    |> fetch_client
   end
 
-  defp get_app_from_request(conn, params) do
-    # Per RFC 6749, HTTP Basic is preferred to body params
-    {client_id, client_secret} =
-      with ["Basic " <> encoded] <- get_req_header(conn, "authorization"),
-           {:ok, decoded} <- Base.decode64(encoded),
-           [id, secret] <-
-             String.split(decoded, ":")
-             |> Enum.map(fn s -> URI.decode_www_form(s) end) do
-        {id, secret}
-      else
-        _ -> {params["client_id"], params["client_secret"]}
-      end
+  defp fetch_client({id, secret}) when is_binary(id) and is_binary(secret) do
+    Repo.get_by(App, client_id: id, client_secret: secret)
+  end
 
-    if client_id && client_secret do
-      Repo.get_by(
-        App,
-        client_id: client_id,
-        client_secret: client_secret
-      )
+  defp fetch_client({_id, _secret}), do: nil
+
+  defp fetch_client_credentials(conn, params) do
+    # Per RFC 6749, HTTP Basic is preferred to body params
+    with ["Basic " <> encoded] <- get_req_header(conn, "authorization"),
+         {:ok, decoded} <- Base.decode64(encoded),
+         [id, secret] <-
+           Enum.map(
+             String.split(decoded, ":"),
+             fn s -> URI.decode_www_form(s) end
+           ) do
+      {id, secret}
     else
-      nil
+      _ -> {params["client_id"], params["client_secret"]}
     end
   end
 
@@ -441,4 +446,16 @@ defmodule Pleroma.Web.OAuth.OAuthController do
 
   defp put_session_registration_id(conn, registration_id),
     do: put_session(conn, :registration_id, registration_id)
+
+  defp response_token(%User{} = user, token, opts \\ %{}) do
+    %{
+      token_type: "Bearer",
+      access_token: token.token,
+      refresh_token: token.refresh_token,
+      expires_in: @expires_in,
+      scope: Enum.join(token.scopes, " "),
+      me: user.ap_id
+    }
+    |> Map.merge(opts)
+  end
 end