distraction.party/test/web/oauth/oauth_controller_test.exs

# Pleroma: A lightweight social networking server
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only

defmodule Pleroma.Web.OAuth.OAuthControllerTest do
  use Pleroma.Web.ConnCase
  import Pleroma.Factory

  alias Pleroma.Repo
  alias Pleroma.Web.OAuth.Authorization
  alias Pleroma.Web.OAuth.Token

  describe "GET /oauth/authorize" do
    setup do
      session_opts = [
        store: :cookie,
        key: "_test",
        signing_salt: "cooldude"
      ]

      [
        app: insert(:oauth_app, redirect_uris: "https://redirect.url"),
        conn:
          build_conn()
          |> Plug.Session.call(Plug.Session.init(session_opts))
          |> fetch_session()
      ]
    end

    test "renders authentication page", %{app: app, conn: conn} do
      conn =
        get(
          conn,
          "/oauth/authorize",
          %{
            "response_type" => "code",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "scope" => "read"
          }
        )

      assert html_response(conn, 200) =~ ~s(type="submit")
    end

    test "renders authentication page if user is already authenticated but `force_login` is tru-ish",
         %{app: app, conn: conn} do
      token = insert(:oauth_token, app_id: app.id)

      conn =
        conn
        |> put_session(:oauth_token, token.token)
        |> get(
          "/oauth/authorize",
          %{
            "response_type" => "code",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "scope" => "read",
            "force_login" => "true"
          }
        )

      assert html_response(conn, 200) =~ ~s(type="submit")
    end

    test "redirects to app if user is already authenticated", %{app: app, conn: conn} do
      token = insert(:oauth_token, app_id: app.id)

      conn =
        conn
        |> put_session(:oauth_token, token.token)
        |> get(
          "/oauth/authorize",
          %{
            "response_type" => "code",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "scope" => "read"
          }
        )

      assert redirected_to(conn) == "https://redirect.url"
    end
  end

  describe "POST /oauth/authorize" do
    test "redirects with oauth authorization" do
      user = insert(:user)
      app = insert(:oauth_app, scopes: ["read", "write", "follow"])

      conn =
        build_conn()
        |> post("/oauth/authorize", %{
          "authorization" => %{
            "name" => user.nickname,
            "password" => "test",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "scope" => "read write",
            "state" => "statepassed"
          }
        })

      target = redirected_to(conn)
      assert target =~ app.redirect_uris

      query = URI.parse(target).query |> URI.query_decoder() |> Map.new()

      assert %{"state" => "statepassed", "code" => code} = query
      auth = Repo.get_by(Authorization, token: code)
      assert auth
      assert auth.scopes == ["read", "write"]
    end

    test "returns 401 for wrong credentials", %{conn: conn} do
      user = insert(:user)
      app = insert(:oauth_app)

      result =
        conn
        |> post("/oauth/authorize", %{
          "authorization" => %{
            "name" => user.nickname,
            "password" => "wrong",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "state" => "statepassed",
            "scope" => Enum.join(app.scopes, " ")
          }
        })
        |> html_response(:unauthorized)

      # Keep the details
      assert result =~ app.client_id
      assert result =~ app.redirect_uris

      # Error message
      assert result =~ "Invalid Username/Password"
    end

    test "returns 401 for missing scopes", %{conn: conn} do
      user = insert(:user)
      app = insert(:oauth_app)

      result =
        conn
        |> post("/oauth/authorize", %{
          "authorization" => %{
            "name" => user.nickname,
            "password" => "test",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "state" => "statepassed",
            "scope" => ""
          }
        })
        |> html_response(:unauthorized)

      # Keep the details
      assert result =~ app.client_id
      assert result =~ app.redirect_uris

      # Error message
      assert result =~ "This action is outside the authorized scopes"
    end

    test "returns 401 for scopes beyond app scopes", %{conn: conn} do
      user = insert(:user)
      app = insert(:oauth_app, scopes: ["read", "write"])

      result =
        conn
        |> post("/oauth/authorize", %{
          "authorization" => %{
            "name" => user.nickname,
            "password" => "test",
            "client_id" => app.client_id,
            "redirect_uri" => app.redirect_uris,
            "state" => "statepassed",
            "scope" => "read write follow"
          }
        })
        |> html_response(:unauthorized)

      # Keep the details
      assert result =~ app.client_id
      assert result =~ app.redirect_uris

      # Error message
      assert result =~ "This action is outside the authorized scopes"
    end
  end

  describe "POST /oauth/token" do
    test "issues a token for an all-body request" do
      user = insert(:user)
      app = insert(:oauth_app, scopes: ["read", "write"])

      {:ok, auth} = Authorization.create_authorization(app, user, ["write"])

      conn =
        build_conn()
        |> post("/oauth/token", %{
          "grant_type" => "authorization_code",
          "code" => auth.token,
          "redirect_uri" => app.redirect_uris,
          "client_id" => app.client_id,
          "client_secret" => app.client_secret
        })

      assert %{"access_token" => token, "me" => ap_id} = json_response(conn, 200)

      token = Repo.get_by(Token, token: token)
      assert token
      assert token.scopes == auth.scopes
      assert user.ap_id == ap_id
    end

    test "issues a token for `password` grant_type with valid credentials, with full permissions by default" do
      password = "testpassword"
      user = insert(:user, password_hash: Comeonin.Pbkdf2.hashpwsalt(password))

      app = insert(:oauth_app, scopes: ["read", "write"])

      # Note: "scope" param is intentionally omitted
      conn =
        build_conn()
        |> post("/oauth/token", %{
          "grant_type" => "password",
          "username" => user.nickname,
          "password" => password,
          "client_id" => app.client_id,
          "client_secret" => app.client_secret
        })

      assert %{"access_token" => token} = json_response(conn, 200)

      token = Repo.get_by(Token, token: token)
      assert token
      assert token.scopes == app.scopes
    end

    test "issues a token for request with HTTP basic auth client credentials" do
      user = insert(:user)
      app = insert(:oauth_app, scopes: ["scope1", "scope2", "scope3"])

      {:ok, auth} = Authorization.create_authorization(app, user, ["scope1", "scope2"])
      assert auth.scopes == ["scope1", "scope2"]

      app_encoded =
        (URI.encode_www_form(app.client_id) <> ":" <> URI.encode_www_form(app.client_secret))
        |> Base.encode64()

      conn =
        build_conn()
        |> put_req_header("authorization", "Basic " <> app_encoded)
        |> post("/oauth/token", %{
          "grant_type" => "authorization_code",
          "code" => auth.token,
          "redirect_uri" => app.redirect_uris
        })

      assert %{"access_token" => token, "scope" => scope} = json_response(conn, 200)

      assert scope == "scope1 scope2"

      token = Repo.get_by(Token, token: token)
      assert token
      assert token.scopes == ["scope1", "scope2"]
    end

    test "rejects token exchange with invalid client credentials" do
      user = insert(:user)
      app = insert(:oauth_app)

      {:ok, auth} = Authorization.create_authorization(app, user)

      conn =
        build_conn()
        |> put_req_header("authorization", "Basic JTIxOiVGMCU5RiVBNCVCNwo=")
        |> post("/oauth/token", %{
          "grant_type" => "authorization_code",
          "code" => auth.token,
          "redirect_uri" => app.redirect_uris
        })

      assert resp = json_response(conn, 400)
      assert %{"error" => _} = resp
      refute Map.has_key?(resp, "access_token")
    end

    test "rejects token exchange for valid credentials belonging to unconfirmed user and confirmation is required" do
      setting = Pleroma.Config.get([:instance, :account_activation_required])

      unless setting do
        Pleroma.Config.put([:instance, :account_activation_required], true)
        on_exit(fn -> Pleroma.Config.put([:instance, :account_activation_required], setting) end)
      end

      password = "testpassword"
      user = insert(:user, password_hash: Comeonin.Pbkdf2.hashpwsalt(password))
      info_change = Pleroma.User.Info.confirmation_changeset(user.info, :unconfirmed)

      {:ok, user} =
        user
        |> Ecto.Changeset.change()
        |> Ecto.Changeset.put_embed(:info, info_change)
        |> Repo.update()

      refute Pleroma.User.auth_active?(user)

      app = insert(:oauth_app)

      conn =
        build_conn()
        |> post("/oauth/token", %{
          "grant_type" => "password",
          "username" => user.nickname,
          "password" => password,
          "client_id" => app.client_id,
          "client_secret" => app.client_secret
        })

      assert resp = json_response(conn, 403)
      assert %{"error" => _} = resp
      refute Map.has_key?(resp, "access_token")
    end

    test "rejects an invalid authorization code" do
      app = insert(:oauth_app)

      conn =
        build_conn()
        |> post("/oauth/token", %{
          "grant_type" => "authorization_code",
          "code" => "Imobviouslyinvalid",
          "redirect_uri" => app.redirect_uris,
          "client_id" => app.client_id,
          "client_secret" => app.client_secret
        })

      assert resp = json_response(conn, 400)
      assert %{"error" => _} = json_response(conn, 400)
      refute Map.has_key?(resp, "access_token")
    end
  end
end