Bind web UI access tokens to sessions (#3940)

* Add overview of active sessions

* Better display of browser/platform name

* Improve how browser information is stored and displayed for sessions overview

* Fix test

* Fix #2347 - Bind web UI access token to session

When you logout, session also destroys the access token, so it's no longer
valid. If access token is destroyed some other way, the session is also
destroyed, requiring a re-login.

Fix #1681 - Add scheduler to remove revoked access tokens and grants

* Fix test

app/controllers/application_controller.rb

@@ -11,6 +11,7 @@ class ApplicationController < ActionController::Base
   include UserTrackingConcern
 
   helper_method :current_account
+  helper_method :current_session
   helper_method :single_user_mode?
 
   rescue_from ActionController::RoutingError, with: :not_found
@@ -68,6 +69,10 @@ class ApplicationController < ActionController::Base
     @current_account ||= current_user.try(:account)
   end
 
+  def current_session
+    @current_session ||= SessionActivation.find_by(session_id: session['auth_id'])
+  end
+
   def cache_collection(raw, klass)
     return raw unless klass.respond_to?(:with_includes)
 

app/controllers/home_controller.rb

@@ -5,7 +5,7 @@ class HomeController < ApplicationController
 
   def index
     @body_classes           = 'app-body'
-    @token                  = find_or_create_access_token.token
+    @token                  = current_session.token
     @web_settings           = Web::Setting.find_by(user: current_user)&.data || {}
     @admin                  = Account.find_local(Setting.site_contact_username)
     @streaming_api_base_url = Rails.configuration.x.streaming_api_base_url
@@ -16,14 +16,4 @@ class HomeController < ApplicationController
   def authenticate_user!
     redirect_to(single_user_mode? ? account_path(Account.first) : about_path) unless user_signed_in?
   end
-
-  def find_or_create_access_token
-    Doorkeeper::AccessToken.find_or_create_for(
-      Doorkeeper::Application.where(superapp: true).first,
-      current_user.id,
-      Doorkeeper::OAuth::Scopes.from_string('read write follow'),
-      Doorkeeper.configuration.access_token_expires_in,
-      Doorkeeper.configuration.refresh_token_enabled?
-    )
-  end
 end

app/models/session_activation.rb

@@ -3,16 +3,23 @@
 #
 # Table name: session_activations
 #
-#  id         :integer          not null, primary key
-#  user_id    :integer          not null
-#  session_id :string           not null
-#  created_at :datetime         not null
-#  updated_at :datetime         not null
-#  user_agent :string           default(""), not null
-#  ip         :inet
+#  id              :integer          not null, primary key
+#  user_id         :integer          not null
+#  session_id      :string           not null
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#  user_agent      :string           default(""), not null
+#  ip              :inet
+#  access_token_id :integer
 #
 
 class SessionActivation < ApplicationRecord
+  belongs_to :access_token, class_name: 'Doorkeeper::AccessToken', dependent: :destroy
+
+  delegate :token,
+           to: :access_token,
+           allow_nil: true
+
   def detection
     @detection ||= Browser.new(user_agent)
   end
@@ -25,9 +32,8 @@ class SessionActivation < ApplicationRecord
     detection.platform.id
   end
 
-  before_save do
-    self.user_agent = '' if user_agent.nil?
-  end
+  before_create :assign_access_token
+  before_save   :assign_user_agent
 
   class << self
     def active?(id)
@@ -53,4 +59,22 @@ class SessionActivation < ApplicationRecord
       where('session_id != ?', id).destroy_all
     end
   end
+
+  private
+
+  def assign_user_agent
+    self.user_agent = '' if user_agent.nil?
+  end
+
+  def assign_access_token
+    superapp = Doorkeeper::Application.find_by(superapp: true)
+
+    return if superapp.nil?
+
+    self.access_token = Doorkeeper::AccessToken.create!(application_id: superapp.id,
+                                                        resource_owner_id: user_id,
+                                                        scopes: 'read write follow',
+                                                        expires_in: Doorkeeper.configuration.access_token_expires_in,
+                                                        use_refresh_token: Doorkeeper.configuration.refresh_token_enabled?)
+  end
 end

app/workers/scheduler/doorkeeper_cleanup_scheduler.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+require 'sidekiq-scheduler'
+
+class Scheduler::DoorkeeperCleanupScheduler
+  include Sidekiq::Worker
+
+  def perform
+    Doorkeeper::AccessToken.where('revoked_at IS NOT NULL').where('revoked_at < NOW()').delete_all
+    Doorkeeper::AccessGrant.where('revoked_at IS NOT NULL').where('revoked_at < NOW()').delete_all
+  end
+end

config/sidekiq.yml

@@ -15,3 +15,6 @@
   feed_cleanup_scheduler:
     cron: '0 0 * * *'
     class: Scheduler::FeedCleanupScheduler
+  doorkeeper_cleanup_scheduler:
+    cron: '1 1 * * 0'
+    class: Scheduler::DoorkeeperCleanupScheduler

db/migrate/20170625140443_add_access_token_id_to_session_activations.rb

@@ -0,0 +1,6 @@
+class AddAccessTokenIdToSessionActivations < ActiveRecord::Migration[5.1]
+  def change
+    add_column :session_activations, :access_token_id, :integer
+    add_foreign_key :session_activations, :oauth_access_tokens, column: :access_token_id, on_delete: :cascade
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170624134742) do
+ActiveRecord::Schema.define(version: 20170625140443) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -257,6 +257,7 @@ ActiveRecord::Schema.define(version: 20170624134742) do
     t.datetime "updated_at", null: false
     t.string "user_agent", default: "", null: false
     t.inet "ip"
+    t.integer "access_token_id"
     t.index ["session_id"], name: "index_session_activations_on_session_id", unique: true
     t.index ["user_id"], name: "index_session_activations_on_user_id"
   end
@@ -406,6 +407,7 @@ ActiveRecord::Schema.define(version: 20170624134742) do
   add_foreign_key "reports", "accounts", column: "action_taken_by_account_id", on_delete: :nullify
   add_foreign_key "reports", "accounts", column: "target_account_id", on_delete: :cascade
   add_foreign_key "reports", "accounts", on_delete: :cascade
+  add_foreign_key "session_activations", "oauth_access_tokens", column: "access_token_id", on_delete: :cascade
   add_foreign_key "session_activations", "users", on_delete: :cascade
   add_foreign_key "statuses", "accounts", column: "in_reply_to_account_id", on_delete: :nullify
   add_foreign_key "statuses", "accounts", on_delete: :cascade