1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.OAuth.OAuthController do
6 use Pleroma.Web, :controller
8 alias Pleroma.Web.OAuth.{Authorization, Token, App}
9 alias Pleroma.{Repo, User}
15 action_fallback(Pleroma.Web.OAuth.FallbackController)
17 def authorize(conn, params) do
18 render(conn, "show.html", %{
19 response_type: params["response_type"],
20 client_id: params["client_id"],
21 scope: params["scope"],
22 redirect_uri: params["redirect_uri"],
23 state: params["state"]
27 def create_authorization(conn, %{
31 "password" => password,
32 "client_id" => client_id,
33 "redirect_uri" => redirect_uri
36 with %User{} = user <- User.get_by_nickname_or_email(name),
37 true <- Pbkdf2.checkpw(password, user.password_hash),
38 {:auth_active, true} <- {:auth_active, User.auth_active?(user)},
39 %App{} = app <- Repo.get_by(App, client_id: client_id),
40 true <- redirect_uri in String.split(app.redirect_uris),
41 {:ok, auth} <- Authorization.create_authorization(app, user) do
42 # Special case: Local MastodonFE.
44 if redirect_uri == "." do
45 mastodon_api_url(conn, :login)
51 redirect_uri == "urn:ietf:wg:oauth:2.0:oob" ->
52 render(conn, "results.html", %{
57 connector = if String.contains?(redirect_uri, "?"), do: "&", else: "?"
58 url = "#{redirect_uri}#{connector}"
59 url_params = %{:code => auth.token}
63 Map.put(url_params, :state, params["state"])
68 url = "#{url}#{Plug.Conn.Query.encode(url_params)}"
70 redirect(conn, external: url)
73 {:auth_active, false} ->
75 |> put_flash(:error, "Account confirmation pending")
76 |> put_status(:forbidden)
85 # - proper scope handling
86 def token_exchange(conn, %{"grant_type" => "authorization_code"} = params) do
87 with %App{} = app <- get_app_from_request(conn, params),
88 fixed_token = fix_padding(params["code"]),
89 %Authorization{} = auth <-
90 Repo.get_by(Authorization, token: fixed_token, app_id: app.id),
91 {:ok, token} <- Token.exchange_token(app, auth),
92 {:ok, inserted_at} <- DateTime.from_naive(token.inserted_at, "Etc/UTC") do
95 access_token: token.token,
96 refresh_token: token.refresh_token,
97 created_at: DateTime.to_unix(inserted_at),
99 scope: "read write follow"
105 put_status(conn, 400)
106 |> json(%{error: "Invalid credentials"})
111 # - investigate a way to verify the user wants to grant read/write/follow once scope handling is done
114 %{"grant_type" => "password", "username" => name, "password" => password} = params
116 with %App{} = app <- get_app_from_request(conn, params),
117 %User{} = user <- User.get_by_nickname_or_email(name),
118 true <- Pbkdf2.checkpw(password, user.password_hash),
119 {:auth_active, true} <- {:auth_active, User.auth_active?(user)},
120 {:ok, auth} <- Authorization.create_authorization(app, user),
121 {:ok, token} <- Token.exchange_token(app, auth) do
123 token_type: "Bearer",
124 access_token: token.token,
125 refresh_token: token.refresh_token,
127 scope: "read write follow"
132 {:auth_active, false} ->
134 |> put_status(:forbidden)
135 |> json(%{error: "Account confirmation pending"})
138 put_status(conn, 400)
139 |> json(%{error: "Invalid credentials"})
145 %{"grant_type" => "password", "name" => name, "password" => _password} = params
149 |> Map.delete("name")
150 |> Map.put("username", name)
152 token_exchange(conn, params)
155 def token_revoke(conn, %{"token" => token} = params) do
156 with %App{} = app <- get_app_from_request(conn, params),
157 %Token{} = token <- Repo.get_by(Token, token: token, app_id: app.id),
158 {:ok, %Token{}} <- Repo.delete(token) do
162 # RFC 7009: invalid tokens [in the request] do not cause an error response
167 # XXX - for whatever reason our token arrives urlencoded, but Plug.Conn should be
168 # decoding it. Investigate sometime.
169 defp fix_padding(token) do
172 |> Base.url_decode64!(padding: false)
173 |> Base.url_encode64()
176 defp get_app_from_request(conn, params) do
177 # Per RFC 6749, HTTP Basic is preferred to body params
178 {client_id, client_secret} =
179 with ["Basic " <> encoded] <- get_req_header(conn, "authorization"),
180 {:ok, decoded} <- Base.decode64(encoded),
182 String.split(decoded, ":")
183 |> Enum.map(fn s -> URI.decode_www_form(s) end) do
186 _ -> {params["client_id"], params["client_secret"]}
189 if client_id && client_secret do
192 client_id: client_id,
193 client_secret: client_secret