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

   1 defmodule Pleroma.Web.OAuth.OAuthController do
   2   use Pleroma.Web, :controller
   3
   4   alias Pleroma.Web.OAuth.{Authorization, Token, App}
   5   alias Pleroma.{Repo, User}
   6   alias Comeonin.Pbkdf2
   7
   8   plug :fetch_session
   9   plug :fetch_flash
  10
  11   action_fallback Pleroma.Web.OAuth.FallbackController
  12
  13   def authorize(conn, params) do
  14     render conn, "show.html", %{
  15       response_type: params["response_type"],
  16       client_id: params["client_id"],
  17       scope: params["scope"],
  18       redirect_uri: params["redirect_uri"],
  19       state: params["state"]
  20     }
  21   end
  22
  23   def create_authorization(conn, %{"authorization" => %{"name" => name, "password" => password, "client_id" => client_id, "redirect_uri" => redirect_uri} = params}) do
  24     with %User{} = user <- User.get_cached_by_nickname(name),
  25          true <- Pbkdf2.checkpw(password, user.password_hash),
  26          %App{} = app <- Repo.get_by(App, client_id: client_id),
  27          {:ok, auth} <- Authorization.create_authorization(app, user) do
  28       if redirect_uri == "urn:ietf:wg:oauth:2.0:oob" do
  29         render conn, "results.html", %{
  30           auth: auth
  31         }
  32       else
  33         connector = if String.contains?(redirect_uri, "?"), do: "&", else: "?"
  34         url = "#{redirect_uri}#{connector}code=#{auth.token}"
  35         url = if params["state"] do
  36           url <> "&state=#{params["state"]}"
  37         else
  38           url
  39         end
  40         redirect(conn, external: url)
  41       end
  42     end
  43   end
  44
  45   # TODO
  46   # - proper scope handling
  47   def token_exchange(conn, %{"grant_type" => "authorization_code"} = params) do
  48     with %App{} = app <- Repo.get_by(App, client_id: params["client_id"], client_secret: params["client_secret"]),
  49          fixed_token = fix_padding(params["code"]),
  50          %Authorization{} = auth <- Repo.get_by(Authorization, token: fixed_token, app_id: app.id),
  51          {:ok, token} <- Token.exchange_token(app, auth) do
  52       response = %{
  53         token_type: "Bearer",
  54         access_token: token.token,
  55         refresh_token: token.refresh_token,
  56         expires_in: 60 * 10,
  57         scope: "read write follow"
  58       }
  59       json(conn, response)
  60     else
  61       _error -> json(conn, %{error: "Invalid credentials"})
  62     end
  63   end
  64
  65   # TODO
  66   # - investigate a way to verify the user wants to grant read/write/follow once scope handling is done
  67   def token_exchange(conn, %{"grant_type" => "password", "name" => name, "password" => password} = params) do
  68     with %App{} = app <- Repo.get_by(App, client_id: params["client_id"], client_secret: params["client_secret"]),
  69          %User{} = user <- User.get_cached_by_nickname(name),
  70          true <- Pbkdf2.checkpw(password, user.password_hash),
  71          {:ok, auth} <- Authorization.create_authorization(app, user),
  72          {:ok, token} <- Token.exchange_token(app, auth) do
  73       response = %{
  74         token_type: "Bearer",
  75         access_token: token.token,
  76         refresh_token: token.refresh_token,
  77         expires_in: 60 * 10,
  78         scope: "read write follow"
  79       }
  80       json(conn, response)
  81     else
  82       _error -> json(conn, %{error: "Invalid credentials"})
  83     end
  84   end
  85
  86   defp fix_padding(token) do
  87     token
  88     |> Base.url_decode64!(padding: false)
  89     |> Base.url_encode64
  90   end
  91 end