X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Fo_auth%2Fo_auth_controller.ex;h=277df1c46683932b08b9669cfe97f7b34a6642a4;hb=28ab09d37755aa4e3f886f4d7748beaed4ad22e3;hp=d2f9d1cebf379c941df3dfffe46d6b2f19215ac9;hpb=dd2b3a8da92e0b823ac338657588339fbf2e9c86;p=akkoma

diff --git a/lib/pleroma/web/o_auth/o_auth_controller.ex b/lib/pleroma/web/o_auth/o_auth_controller.ex
index d2f9d1ceb..277df1c46 100644
--- a/lib/pleroma/web/o_auth/o_auth_controller.ex
+++ b/lib/pleroma/web/o_auth/o_auth_controller.ex
@@ -1,18 +1,18 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.OAuth.OAuthController do
   use Pleroma.Web, :controller
 
+  alias Pleroma.Helpers.AuthHelper
   alias Pleroma.Helpers.UriHelper
   alias Pleroma.Maps
   alias Pleroma.MFA
   alias Pleroma.Registration
   alias Pleroma.Repo
   alias Pleroma.User
-  alias Pleroma.Web.Auth.Authenticator
-  alias Pleroma.Web.ControllerHelper
+  alias Pleroma.Web.Auth.WrapperAuthenticator, as: Authenticator
   alias Pleroma.Web.OAuth.App
   alias Pleroma.Web.OAuth.Authorization
   alias Pleroma.Web.OAuth.MFAController
@@ -23,6 +23,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   alias Pleroma.Web.OAuth.Token.Strategy.RefreshToken
   alias Pleroma.Web.OAuth.Token.Strategy.Revoke, as: RevokeToken
   alias Pleroma.Web.Plugs.RateLimiter
+  alias Pleroma.Web.Utils.Params
 
   require Logger
 
@@ -31,10 +32,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   plug(:fetch_session)
   plug(:fetch_flash)
 
-  plug(:skip_plug, [
-    Pleroma.Web.Plugs.OAuthScopesPlug,
-    Pleroma.Web.Plugs.EnsurePublicOrAuthenticatedPlug
-  ])
+  plug(:skip_auth)
 
   plug(RateLimiter, [name: :authentication] when action == :create_authorization)
 
@@ -49,7 +47,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   end
 
   def authorize(%Plug.Conn{assigns: %{token: %Token{}}} = conn, %{"force_login" => _} = params) do
-    if ControllerHelper.truthy_param?(params["force_login"]) do
+    if Params.truthy_param?(params["force_login"]) do
       do_authorize(conn, params)
     else
       handle_existing_authorization(conn, params)
@@ -61,24 +59,52 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   # after user already authorized to MastodonFE.
   # So we have to check client and token.
   def authorize(
-        %Plug.Conn{assigns: %{token: %Token{} = token}} = conn,
+        %Plug.Conn{assigns: %{token: %Token{} = token, user: %User{} = user}} = conn,
         %{"client_id" => client_id} = params
       ) do
     with %Token{} = t <- Repo.get_by(Token, token: token.token) |> Repo.preload(:app),
          ^client_id <- t.app.client_id do
       handle_existing_authorization(conn, params)
+    else
+      _ ->
+        maybe_reuse_token(conn, params, user.id)
+    end
+  end
+
+  def authorize(%Plug.Conn{} = conn, params) do
+    # if we have a user in the session, attempt to authenticate as them
+    # otherwise show the login form
+    maybe_reuse_token(conn, params, AuthHelper.get_session_user(conn))
+  end
+
+  defp maybe_reuse_token(conn, params, user_id) when is_binary(user_id) do
+    with %User{} = user <- User.get_cached_by_id(user_id),
+         %App{} = app <- Repo.get_by(App, client_id: params["client_id"]),
+         {:ok, %Token{} = token} <- Token.get_preeexisting_by_app_and_user(app, user),
+         {:ok, %Authorization{} = auth} <-
+           Authorization.get_preeexisting_by_app_and_user(app, user) do
+      conn
+      |> assign(:token, token)
+      |> after_create_authorization(auth, %{"authorization" => params})
     else
       _ -> do_authorize(conn, params)
     end
   end
 
-  def authorize(%Plug.Conn{} = conn, params), do: do_authorize(conn, params)
+  defp maybe_reuse_token(conn, params, _user), do: do_authorize(conn, params)
 
   defp do_authorize(%Plug.Conn{} = conn, params) do
     app = Repo.get_by(App, client_id: params["client_id"])
     available_scopes = (app && app.scopes) || []
     scopes = Scopes.fetch_scopes(params, available_scopes)
 
+    user =
+      with %{assigns: %{user: %User{} = user}} <- conn do
+        user
+      else
+        _ -> nil
+      end
+
     scopes =
       if scopes == [] do
         available_scopes
@@ -88,13 +114,16 @@ defmodule Pleroma.Web.OAuth.OAuthController do
 
     # Note: `params` might differ from `conn.params`; use `@params` not `@conn.params` in template
     render(conn, Authenticator.auth_template(), %{
+      user: user,
+      app: app && Map.delete(app, :client_secret),
       response_type: params["response_type"],
       client_id: params["client_id"],
       available_scopes: available_scopes,
       scopes: scopes,
       redirect_uri: params["redirect_uri"],
       state: params["state"],
-      params: params
+      params: params,
+      view_module: OAuthView
     })
   end
 
@@ -131,14 +160,18 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     end
   end
 
-  def create_authorization(
-        %Plug.Conn{} = conn,
-        %{"authorization" => _} = params,
-        opts \\ []
-      ) do
+  def create_authorization(_, _, opts \\ [])
+
+  def create_authorization(%Plug.Conn{assigns: %{user: %User{} = user}} = conn, params, []) do
+    create_authorization(conn, params, user: user)
+  end
+
+  def create_authorization(%Plug.Conn{} = conn, %{"authorization" => _} = params, opts) do
     with {:ok, auth, user} <- do_create_authorization(conn, params, opts[:user]),
          {:mfa_required, _, _, false} <- {:mfa_required, user, auth, MFA.require?(user)} do
-      after_create_authorization(conn, auth, params)
+      conn
+      |> AuthHelper.put_session_user(user.id)
+      |> after_create_authorization(auth, params)
     else
       error ->
         handle_create_authorization_error(conn, error, params)
@@ -151,7 +184,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     # Enforcing the view to reuse the template when calling from other controllers
     conn
     |> put_view(OAuthView)
-    |> render("oob_authorization_created.html", %{auth: auth})
+    |> render("oob_authorization_created.html", %{auth: auth, view_module: OAuthView})
   end
 
   def after_create_authorization(%Plug.Conn{} = conn, %Authorization{} = auth, %{
@@ -178,11 +211,11 @@ defmodule Pleroma.Web.OAuth.OAuthController do
          {:error, scopes_issue},
          %{"authorization" => _} = params
        )
-       when scopes_issue in [:unsupported_scopes, :missing_scopes] do
+       when scopes_issue in [:unsupported_scopes, :missing_scopes, :user_is_not_an_admin] do
     # Per https://github.com/tootsuite/mastodon/blob/
     #   51e154f5e87968d6bb115e053689767ab33e80cd/app/controllers/api/base_controller.rb#L39
     conn
-    |> put_flash(:error, dgettext("errors", "This action is outside the authorized scopes"))
+    |> put_flash(:error, dgettext("errors", "This action is outside of authorized scopes"))
     |> put_status(:unauthorized)
     |> authorize(params)
   end
@@ -248,7 +281,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     with {:ok, app} <- Token.Utils.fetch_app(conn),
          {:ok, %{user: user} = token} <- Token.get_by_refresh_token(app, token),
          {:ok, token} <- RefreshToken.grant(token) do
-      json(conn, OAuthView.render("token.json", %{user: user, token: token}))
+      after_token_exchange(conn, %{user: user, token: token})
     else
       _error -> render_invalid_credentials_error(conn)
     end
@@ -259,8 +292,8 @@ defmodule Pleroma.Web.OAuth.OAuthController do
          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) do
-      json(conn, OAuthView.render("token.json", %{user: user, token: token}))
+         {:ok, token} <- Token.get_or_exchange_token(auth, app, user) do
+      after_token_exchange(conn, %{user: user, token: token})
     else
       error ->
         handle_token_exchange_error(conn, error)
@@ -275,7 +308,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
          {:ok, app} <- Token.Utils.fetch_app(conn),
          requested_scopes <- Scopes.fetch_scopes(params, app.scopes),
          {:ok, token} <- login(user, app, requested_scopes) do
-      json(conn, OAuthView.render("token.json", %{user: user, token: token}))
+      after_token_exchange(conn, %{user: user, token: token})
     else
       error ->
         handle_token_exchange_error(conn, error)
@@ -298,7 +331,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     with {:ok, app} <- Token.Utils.fetch_app(conn),
          {:ok, auth} <- Authorization.create_authorization(app, %User{}),
          {:ok, token} <- Token.exchange_token(app, auth) do
-      json(conn, OAuthView.render("token.json", %{token: token}))
+      after_token_exchange(conn, %{token: token})
     else
       _error ->
         handle_token_exchange_error(conn, :invalid_credentails)
@@ -308,6 +341,13 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   # Bad request
   def token_exchange(%Plug.Conn{} = conn, params), do: bad_request(conn, params)
 
+  def after_token_exchange(%Plug.Conn{} = conn, %{token: token} = view_params) do
+    conn
+    |> AuthHelper.put_session_token(token.token)
+    |> AuthHelper.put_session_user(token.user_id)
+    |> json(OAuthView.render("token.json", view_params))
+  end
+
   defp handle_token_exchange_error(%Plug.Conn{} = conn, {:mfa_required, user, auth, _}) do
     conn
     |> put_status(:forbidden)
@@ -361,9 +401,17 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     render_invalid_credentials_error(conn)
   end
 
-  def token_revoke(%Plug.Conn{} = conn, %{"token" => _token} = params) do
-    with {:ok, app} <- Token.Utils.fetch_app(conn),
-         {:ok, _token} <- RevokeToken.revoke(app, params) do
+  def token_revoke(%Plug.Conn{} = conn, %{"token" => token}) do
+    with {:ok, %Token{} = oauth_token} <- Token.get_by_token(token),
+         {:ok, oauth_token} <- RevokeToken.revoke(oauth_token) do
+      conn =
+        with session_token = AuthHelper.get_session_token(conn),
+             %Token{token: ^session_token} <- oauth_token do
+          AuthHelper.delete_session_token(conn)
+        else
+          _ -> conn
+        end
+
       json(conn, %{})
     else
       _error ->
@@ -401,7 +449,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
       |> Map.put("state", state)
 
     # Handing the request to Ueberauth
-    redirect(conn, to: o_auth_path(conn, :request, provider, params))
+    redirect(conn, to: Routes.o_auth_path(conn, :request, provider, params))
   end
 
   def request(%Plug.Conn{} = conn, params) do
@@ -510,10 +558,9 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     else
       {:error, changeset} ->
         message =
-          Enum.map(changeset.errors, fn {field, {error, _}} ->
+          Enum.map_join(changeset.errors, "; ", fn {field, {error, _}} ->
             "#{field} #{error}"
           end)
-          |> Enum.join("; ")
 
         message =
           String.replace(
@@ -558,7 +605,8 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   defp do_create_authorization(%User{} = user, %App{} = app, requested_scopes)
        when is_list(requested_scopes) do
     with {:account_status, :active} <- {:account_status, User.account_status(user)},
-         {:ok, scopes} <- validate_scopes(app, requested_scopes),
+         requested_scopes <- Scopes.filter_admin_scopes(requested_scopes, user),
+         {:ok, scopes} <- validate_scopes(user, app, requested_scopes),
          {:ok, auth} <- Authorization.create_authorization(app, user, scopes) do
       {:ok, auth}
     end
@@ -575,7 +623,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   end
 
   # Special case: Local MastodonFE
-  defp redirect_uri(%Plug.Conn{} = conn, "."), do: auth_url(conn, :login)
+  defp redirect_uri(%Plug.Conn{} = conn, "."), do: Routes.auth_url(conn, :login)
 
   defp redirect_uri(%Plug.Conn{}, redirect_uri), do: redirect_uri
 
@@ -590,15 +638,16 @@ defmodule Pleroma.Web.OAuth.OAuthController do
     end
   end
 
-  @spec validate_scopes(App.t(), map() | list()) ::
+  @spec validate_scopes(User.t(), App.t(), map() | list()) ::
           {:ok, list()} | {:error, :missing_scopes | :unsupported_scopes}
-  defp validate_scopes(%App{} = app, params) when is_map(params) do
+  defp validate_scopes(%User{} = user, %App{} = app, params) when is_map(params) do
     requested_scopes = Scopes.fetch_scopes(params, app.scopes)
-    validate_scopes(app, requested_scopes)
+    validate_scopes(user, app, requested_scopes)
   end
 
-  defp validate_scopes(%App{} = app, requested_scopes) when is_list(requested_scopes) do
-    Scopes.validate(requested_scopes, app.scopes)
+  defp validate_scopes(%User{} = user, %App{} = app, requested_scopes)
+       when is_list(requested_scopes) do
+    Scopes.validate(requested_scopes, app.scopes, user)
   end
 
   def default_redirect_uri(%App{} = app) do