add AP login for instance admins

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add support for logging in via an ActivityPub direct message to the instance admin.
+
 ### Changed
 
 ### Deprecated

backend/config/config.exs

@@ -51,6 +51,10 @@ config :backend, Backend.Mailer,
   adapter: Swoosh.Adapters.Sendgrid,
   api_key: System.get_env("SENDGRID_API_KEY")
 
+config :backend, Mastodon.Messenger,
+  domain: System.get_env("MASTODON_DOMAIN"),
+  token: System.get_env("MASTODON_TOKEN")
+
 config :backend, :crawler,
   status_age_limit_days: 28,
   status_count_limit: 5000,

backend/lib/backend/api.ex

@@ -6,10 +6,10 @@ defmodule Backend.Api do
   import Backend.Util
   import Ecto.Query
 
-  @spec get_instance!(String.t()) :: Instance.t()
-  def get_instance!(domain) do
+  @spec get_instance(String.t()) :: Instance.t() | nil
+  def get_instance(domain) do
     Instance
-    |> Repo.get_by!(domain: domain)
+    |> Repo.get_by(domain: domain)
   end
 
   @spec get_instance_with_peers(String.t()) :: Instance.t() | nil

backend/lib/backend/crawler/crawlers/mastodon.ex

@@ -45,10 +45,10 @@ defmodule Backend.Crawler.Crawlers.Mastodon do
         Map.take(instance["stats"], ["user_count"])
         |> convert_keys_to_atoms(),
         %{
+          instance_type: get_instance_type(instance),
           peers: [],
           interactions: %{},
           statuses_seen: 0,
-          instance_type: nil,
           description: nil,
           version: nil,
           status_count: nil
@@ -71,13 +71,6 @@ defmodule Backend.Crawler.Crawlers.Mastodon do
       } mentions in #{statuses_seen} statuses."
     )
 
-    instance_type =
-      cond do
-        Map.get(instance, "version") |> String.downcase() =~ "pleroma" -> :pleroma
-        is_gab?(instance) -> :gab
-        true -> :mastodon
-      end
-
     Map.merge(
       Map.merge(
         Map.take(instance, ["version", "description"]),
@@ -88,7 +81,7 @@ defmodule Backend.Crawler.Crawlers.Mastodon do
         peers: peers,
         interactions: interactions,
         statuses_seen: statuses_seen,
-        instance_type: instance_type
+        instance_type: get_instance_type(instance)
       }
     )
   end
@@ -240,4 +233,12 @@ defmodule Backend.Crawler.Crawlers.Mastodon do
       title_is_gab
     end
   end
+
+  defp get_instance_type(instance_stats) do
+    cond do
+      Map.get(instance_stats, "version") |> String.downcase() =~ "pleroma" -> :pleroma
+      is_gab?(instance_stats) -> :gab
+      true -> :mastodon
+    end
+  end
 end

backend/lib/backend/crawler/crawlers/misskey.ex

@@ -42,14 +42,14 @@ defmodule Backend.Crawler.Crawlers.Misskey do
         crawl_large_instance(domain, user_count, status_count)
       else
         %{
+          instance_type: :misskey,
           version: nil,
           description: nil,
           user_count: user_count,
           status_count: nil,
           peers: [],
           interactions: %{},
-          statuses_seen: 0,
-          instance_type: nil
+          statuses_seen: 0
         }
       end
     end

backend/lib/backend_web/controllers/admin_controller.ex

@@ -8,7 +8,7 @@ defmodule BackendWeb.AdminController do
     [token] = get_req_header(conn, "token")
 
     with {:ok, domain} <- Auth.verify_token(token) do
-      instance = Api.get_instance!(domain)
+      instance = Api.get_instance(domain)
       render(conn, "show.json", instance: instance)
     end
   end

backend/lib/backend_web/controllers/admin_login_controller.ex

@@ -1,7 +1,9 @@
 defmodule BackendWeb.AdminLoginController do
   use BackendWeb, :controller
   import Backend.Util
+  alias Backend.Api
   alias Backend.Mailer.UserEmail
+  alias Mastodon.Messenger
 
   action_fallback BackendWeb.FallbackController
 
@@ -11,20 +13,38 @@ defmodule BackendWeb.AdminLoginController do
   """
   def show(conn, %{"id" => domain}) do
     cleaned_domain = clean_domain(domain)
+    instance = Api.get_instance(domain)
 
-    instance_data = get_and_decode!("https://#{cleaned_domain}/api/v1/instance")
+    keyword_args =
+      cond do
+        instance == nil or instance.type == nil ->
+          [error: "We have not seen this instance before. Please check for typos."]
 
-    render(conn, "show.json", instance_data: instance_data, cleaned_domain: cleaned_domain)
+        not Enum.member?(["mastodon", "pleroma", "gab"], instance.type) ->
+          [error: "It is only possible to administer Mastodon and Pleroma instances."]
+
+        true ->
+          case get_and_decode("https://#{cleaned_domain}/api/v1/instance") do
+            {:ok, instance_data} ->
+              [instance_data: instance_data, cleaned_domain: cleaned_domain]
+
+            {:error, _err} ->
+              [error: "Unable to get instance details. Is it currently live?"]
+          end
+      end
+
+    render(conn, "show.json", keyword_args)
   end
 
   def create(conn, %{"domain" => domain, "type" => type}) do
     cleaned_domain = clean_domain(domain)
+    {data_state, instance_data} = get_and_decode("https://#{cleaned_domain}/api/v1/instance")
 
-    instance_data = get_and_decode!("https://#{cleaned_domain}/api/v1/instance")
-
-    # credo:disable-for-lines:16 Credo.Check.Refactor.CondStatements
     error =
       cond do
+        data_state == :error ->
+          "Unable to get instance details. Is it currently live?"
+
         type == "email" ->
           email = Map.get(instance_data, "email")
 
@@ -33,8 +53,10 @@ defmodule BackendWeb.AdminLoginController do
             {:error, _} -> "Failed to send email."
           end
 
-        # type == "fediverseAccount" ->
-        #   account = nil
+        type == "fediverseAccount" ->
+          username = get_in(instance_data, ["contact_account", "username"])
+          _status = Messenger.dm_login_link(username, cleaned_domain)
+          nil
 
         true ->
           "Invalid account type. Must be 'email' or 'fediverseAccount'."

backend/lib/backend_web/views/admin_login_view.ex

@@ -2,9 +2,17 @@ defmodule BackendWeb.AdminLoginView do
   use BackendWeb, :view
   import Backend.Util
 
-  def render("show.json", %{instance_data: instance_data, cleaned_domain: cleaned_domain}) do
-    username = get_in(instance_data, ["contact_account", "username"])
+  def render("show.json", %{error: error}) do
+    %{
+      error: error
+    }
+  end
 
+  def render("show.json", %{
+        instance_data: instance_data,
+        cleaned_domain: cleaned_domain
+      }) do
+    username = get_in(instance_data, ["contact_account", "username"])
     fedi_account = get_account(username, cleaned_domain)
 
     %{

backend/lib/mastodon/Messenger.ex

@@ -0,0 +1,22 @@
+defmodule Mastodon.Messenger do
+  import Backend.{Auth, Util}
+  require Logger
+
+  def dm_login_link(username, user_domain) do
+    mastodon_domain = Application.get_env(:backend, __MODULE__)[:domain]
+    token = Application.get_env(:backend, __MODULE__)[:token]
+    frontend_domain = get_config(:frontend_domain)
+
+    conn = Hunter.new(base_url: "https://#{mastodon_domain}", bearer_token: token)
+    Logger.info(inspect(conn))
+
+    status_text =
+      "@#{username}@#{user_domain} " <>
+        "Someone tried to log in to #{user_domain} on https://#{frontend_domain}.\n" <>
+        "If it was you, click here to confirm:\n" <>
+        "#{get_login_link(user_domain)} " <>
+        "This link will be valid for 12 hours."
+
+    Hunter.Status.create_status(conn, status_text, visibility: :direct)
+  end
+end

backend/mix.exs

@@ -64,7 +64,9 @@ defmodule Backend.MixProject do
       {:elasticsearch, "~> 1.0"},
       {:appsignal, "~> 1.10.1"},
       {:credo, "~> 1.1", only: [:dev, :test], runtime: false},
-      {:nebulex, "~> 1.1"}
+      {:nebulex, "~> 1.1"},
+      {:hunter, "~> 0.5.1"},
+      {:poison, "~> 4.0", override: true}
     ]
   end
 

backend/mix.lock

@@ -26,6 +26,7 @@
   "hackney": {:hex, :hackney, "1.15.1", "9f8f471c844b8ce395f7b6d8398139e26ddca9ebc171a8b91342ee15a19963f4", [:rebar3], [{:certifi, "2.5.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
   "honeydew": {:hex, :honeydew, "1.4.3", "f2d976aaf8b9b914a635d2d483f1a71d2f6d8651809474dd5db581953cbebb30", [:mix], [{:ecto, "~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm"},
   "httpoison": {:hex, :httpoison, "1.5.1", "0f55b5b673b03c5c327dac7015a67cb571b99b631acc0bc1b0b98dcd6b9f2104", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
+  "hunter": {:hex, :hunter, "0.5.1", "374dc4a800e2c340659657f8875e466075c7ea532e0d7a7787665f272b410150", [:mix], [{:httpoison, "~> 1.5", [hex: :httpoison, repo: "hexpm", optional: false]}, {:poison, "~> 4.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
   "idna": {:hex, :idna, "5.1.2", "e21cb58a09f0228a9e0b95eaa1217f1bcfc31a1aaa6e1fdf2f53a33f7dbd9494", [:rebar3], [{:unicode_util_compat, "0.3.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
   "inflex": {:hex, :inflex, "1.10.0", "8366a7696e70e1813aca102e61274addf85d99f4a072b2f9c7984054ea1b9d29", [:mix], [], "hexpm"},
   "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
@@ -44,7 +45,7 @@
   "plug": {:hex, :plug, "1.8.2", "0bcce1daa420f189a6491f3940cc77ea7fb1919761175c9c3b59800d897440fc", [:mix], [{:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm"},
   "plug_cowboy": {:hex, :plug_cowboy, "2.1.0", "b75768153c3a8a9e8039d4b25bb9b14efbc58e9c4a6e6a270abff1cd30cbe320", [:mix], [{:cowboy, "~> 2.5", [hex: :cowboy, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "plug_crypto": {:hex, :plug_crypto, "1.0.0", "18e49317d3fa343f24620ed22795ec29d4a5e602d52d1513ccea0b07d8ea7d4d", [:mix], [], "hexpm"},
-  "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], [], "hexpm"},
+  "poison": {:hex, :poison, "4.0.1", "bcb755a16fac91cad79bfe9fc3585bb07b9331e50cfe3420a24bcc2d735709ae", [:mix], [], "hexpm"},
   "postgrex": {:hex, :postgrex, "0.14.3", "5754dee2fdf6e9e508cbf49ab138df964278700b764177e8f3871e658b345a1e", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 2.0", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm"},
   "public_suffix": {:hex, :public_suffix, "0.6.0", "100cfe86f13f9f6f0cf67e743b1b83c78dd1223a2c422fa03ebf4adff514cbc3", [:mix], [{:idna, ">= 1.2.0 and < 6.0.0", [hex: :idna, repo: "hexpm", optional: false]}], "hexpm"},
   "quantum": {:hex, :quantum, "2.3.4", "72a0e8855e2adc101459eac8454787cb74ab4169de6ca50f670e72142d4960e9", [:mix], [{:calendar, "~> 0.17", [hex: :calendar, repo: "hexpm", optional: true]}, {:crontab, "~> 1.1", [hex: :crontab, repo: "hexpm", optional: false]}, {:gen_stage, "~> 0.12", [hex: :gen_stage, repo: "hexpm", optional: false]}, {:swarm, "~> 3.3", [hex: :swarm, repo: "hexpm", optional: false]}, {:timex, "~> 3.1", [hex: :timex, repo: "hexpm", optional: true]}], "hexpm"},

frontend/src/components/screens/AdminScreen.tsx

@@ -54,6 +54,7 @@ class AdminScreen extends React.PureComponent<IAdminScreenProps, IAdminScreenSta
             message: "Failed to load settings.",
             timeout: 0
           });
+          unsetAuthToken();
         });
     }
   }
@@ -158,6 +159,10 @@ class AdminScreen extends React.PureComponent<IAdminScreenProps, IAdminScreenSta
 
   private logout = () => {
     unsetAuthToken();
+    AppToaster.show({
+      icon: IconNames.LOG_OUT,
+      message: "Logged out."
+    });
     this.props.navigate("/admin/login");
   };
 }

frontend/src/components/screens/LoginScreen.tsx

@@ -3,6 +3,7 @@ import { IconNames } from "@blueprintjs/icons";
 import React from "react";
 import { Redirect } from "react-router";
 import styled from "styled-components";
+import AppToaster from "../../toaster";
 import { getAuthToken, getFromApi, postToApi } from "../../util";
 import { Page } from "../atoms";
 import { ErrorState } from "../molecules";
@@ -118,7 +119,7 @@ class LoginScreen extends React.PureComponent<{}, ILoginScreenState> {
       return;
     }
     const loginWithEmail = () => this.login("email");
-    // const loginWithDm = () => this.login("fediverseAccount");
+    const loginWithDm = () => this.login("fediverseAccount");
     return (
       <>
         <H4>Choose an authentication method</H4>
@@ -133,7 +134,7 @@ class LoginScreen extends React.PureComponent<{}, ILoginScreenState> {
               {`Email ${loginTypes.email}`}
             </LoginTypeButton>
           )}
-          {/* {loginTypes.fediverseAccount && (
+          {loginTypes.fediverseAccount && (
             <LoginTypeButton
               large={true}
               icon={IconNames.GLOBE_NETWORK}
@@ -142,7 +143,7 @@ class LoginScreen extends React.PureComponent<{}, ILoginScreenState> {
             >
               {`DM ${loginTypes.fediverseAccount}`}
             </LoginTypeButton>
-          )} */}
+          )}
         </LoginTypeContainer>
       </>
     );
@@ -179,15 +180,20 @@ class LoginScreen extends React.PureComponent<{}, ILoginScreenState> {
     }
     getFromApi(`admin/login/${domain}`)
       .then(response => {
-        if ("error" in response || "errors" in response) {
+        if (!!response.error) {
           // Go to catch() below
-          throw new Error();
+          throw new Error(response.error);
         } else {
           this.setState({ loginTypes: response, isGettingLoginTypes: false });
         }
       })
-      .catch(() => {
-        this.setState({ error: true });
+      .catch((err: Error) => {
+        AppToaster.show({
+          icon: IconNames.ERROR,
+          intent: Intent.DANGER,
+          message: err.message
+        });
+        this.setState({ isGettingLoginTypes: false });
       });
   };