Merge pull request #214 from rails/http-auth

Provide HTTP Basic authentication closed by default

Author: rosa

README.md

@@ -56,9 +56,29 @@ RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
 
 *Note: Legacy CSS bundlers `sass-rails` and `sassc-rails` may fail to compile some of the CSS vendored into this library from [Bulma](https://github.com/jgthms/bulma), which was created in [Dart SASS](https://sass-lang.com/dart-sass/). You will therefore need to upgrade to `dartsass-rails` or some library that relies on it, like `cssbundling-rails`.*
 
-### Authentication and base controller class
+### Authentication
 
-By default, Mission Control's controllers will extend the host app's `ApplicationController`. If no authentication is enforced, `/jobs` will be available to everyone. You might want to implement some kind of authentication for this in your app. To make this easier, you can specify a different controller as the base class for Mission Control's controllers:
+Mission Control comes with **HTTP basic authentication enabled and closed** by default. Credentials are stored in [Rails's credentials](https://edgeguides.rubyonrails.org/security.html#custom-credentials) like this:
+```yml
+mission_control:
+  http_basic_auth_user: dev
+  http_basic_auth_password: secret
+```
+
+If no credentials are configured, Mission Control won't be accessible. To set these up, you can run the generator provided like this:
+
+```
+bin/rails mission_control:jobs:authentication:configure
+```
+
+To set them up for different environments you can use the `RAILS_ENV` environment variable, like this:
+```
+RAILS_ENV=production bin/rails mission_control:jobs:authentication:configure
+```
+
+#### Custom authentication
+
+You can provide your own authentication mechanism, for example, if you have a certain type of admin user in your app that can access Mission Control. To make this easier, you can specify a different controller as the base class for Mission Control's controllers. By default, Mission Control's controllers will extend the host app's `ApplicationController`, but you can change this easily:
 
 ```ruby
 Rails.application.configure do
@@ -69,7 +89,11 @@ end
 Or, in your environment config or `application.rb`:
 ```ruby
 config.mission_control.jobs.base_controller_class = "AdminController"
+```
 
+If you do this, you can disable the default HTTP Basic Authentication using the following option:
+```ruby
+config.mission_control.jobs.http_basic_auth_enabled = false
 ```
 
 ### Other configuration settings

app/controllers/concerns/mission_control/jobs/basic_authentication.rb

@@ -0,0 +1,33 @@
+module MissionControl::Jobs::BasicAuthentication
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :authenticate_by_http_basic
+  end
+
+  private
+    def authenticate_by_http_basic
+      if http_basic_authentication_enabled?
+        if http_basic_authentication_configured?
+          http_basic_authenticate_or_request_with(**http_basic_authentication_credentials)
+        else
+          head :unauthorized
+        end
+      end
+    end
+
+    def http_basic_authentication_enabled?
+      MissionControl::Jobs.http_basic_auth_enabled
+    end
+
+    def http_basic_authentication_configured?
+      http_basic_authentication_credentials.values.all?(&:present?)
+    end
+
+    def http_basic_authentication_credentials
+      {
+        name: MissionControl::Jobs.http_basic_auth_user,
+        password: MissionControl::Jobs.http_basic_auth_password
+      }.transform_values(&:presence)
+    end
+end

app/controllers/mission_control/jobs/application_controller.rb

@@ -9,6 +9,7 @@ class MissionControl::Jobs::ApplicationController < MissionControl::Jobs.base_co
   helper MissionControl::Jobs::ApplicationHelper unless self < MissionControl::Jobs::ApplicationHelper
   helper Importmap::ImportmapTagsHelper unless self < Importmap::ImportmapTagsHelper
 
+  include MissionControl::Jobs::BasicAuthentication
   include MissionControl::Jobs::ApplicationScoped, MissionControl::Jobs::NotFoundRedirections
   include MissionControl::Jobs::AdapterFeatures
 

lib/mission_control/jobs.rb

@@ -7,19 +7,29 @@
 loader.inflector = Zeitwerk::GemInflector.new(__FILE__)
 loader.push_dir(File.expand_path("..", __dir__))
 loader.ignore("#{File.expand_path("..", __dir__)}/resque")
+loader.ignore("#{File.expand_path("..", __dir__)}/mission_control/jobs/tasks.rb")
+loader.ignore("#{File.expand_path("..", __dir__)}/generators")
 loader.setup
 
 module MissionControl
   module Jobs
     mattr_accessor :adapters, default: Set.new
     mattr_accessor :applications, default: MissionControl::Jobs::Applications.new
     mattr_accessor :base_controller_class, default: "::ApplicationController"
+
+    mattr_accessor :internal_query_count_limit, default: 500_000 # Hard limit to keep unlimited count queries fast enough
     mattr_accessor :delay_between_bulk_operation_batches, default: 0
+    mattr_accessor :scheduled_job_delay_threshold, default: 1.minute
+
     mattr_accessor :logger, default: ActiveSupport::Logger.new(nil)
-    mattr_accessor :internal_query_count_limit, default: 500_000 # Hard limit to keep unlimited count queries fast enough
+
     mattr_accessor :show_console_help, default: true
-    mattr_accessor :scheduled_job_delay_threshold, default: 1.minute
-    mattr_accessor :importmap, default: Importmap::Map.new
     mattr_accessor :backtrace_cleaner
+
+    mattr_accessor :importmap, default: Importmap::Map.new
+
+    mattr_accessor :http_basic_auth_user
+    mattr_accessor :http_basic_auth_password
+    mattr_accessor :http_basic_auth_enabled, default: true
   end
 end

lib/mission_control/jobs/authentication.rb

@@ -0,0 +1,65 @@
+class MissionControl::Jobs::Authentication < Rails::Command::Base
+  def self.configure
+    new.configure
+  end
+
+  def configure
+    if credentials_accessible?
+      if authentication_configured?
+        say "HTTP Basic Authentication is already configured for `#{Rails.env}`. You can edit it using `credentials:edit`"
+      else
+        say "Setting up credentials for HTTP Basic Authentication for `#{Rails.env}` environment."
+        say ""
+
+        username = ask "Enter username: "
+        password = SecureRandom.base58(64)
+
+        store_credentials(username, password)
+        say "Username and password stored in Rails encrypted credentials."
+        say ""
+        say "You can now access Mission Control – Jobs with: "
+        say ""
+        say " - Username: #{username}"
+        say " - password: #{password}"
+        say ""
+        say "You can also edit these in the future via `credentials:edit`"
+      end
+    else
+      say "Rails credentials haven't been configured or aren't accessible. Configure them following the instructions in `credentials:help`"
+    end
+  end
+
+  private
+    attr_reader :environment
+
+    def credentials_accessible?
+      credentials.read.present?
+    end
+
+    def authentication_configured?
+      %i[ http_basic_auth_user http_basic_auth_password ].any? do |key|
+        credentials.dig(:mission_control, key).present?
+      end
+    end
+
+    def store_credentials(username, password)
+      content = credentials.read + "\n" + http_authentication_entry(username, password) + "\n"
+      credentials.write(content)
+    end
+
+    def credentials
+      @credentials ||= Rails.application.encrypted(config.content_path, key_path: config.key_path)
+    end
+
+    def config
+      Rails.application.config.credentials
+    end
+
+    def http_authentication_entry(username, password)
+      <<~ENTRY
+        mission_control:
+          http_basic_auth_user: #{username}
+          http_basic_auth_password: #{password}
+      ENTRY
+    end
+end

lib/mission_control/jobs/engine.rb

@@ -7,6 +7,10 @@ module Jobs
     class Engine < ::Rails::Engine
       isolate_namespace MissionControl::Jobs
 
+      rake_tasks do
+        load "mission_control/jobs/tasks.rb"
+      end
+
       initializer "mission_control-jobs.middleware" do |app|
         if app.config.api_only
           config.middleware.use ActionDispatch::Flash
@@ -30,6 +34,11 @@ class Engine < ::Rails::Engine
         end
       end
 
+      initializer "mission_control-jobs.http_basic_auth" do |app|
+        MissionControl::Jobs.http_basic_auth_user = app.credentials.dig(:mission_control, :http_basic_auth_user)
+        MissionControl::Jobs.http_basic_auth_password = app.credentials.dig(:mission_control, :http_basic_auth_password)
+      end
+
       initializer "mission_control-jobs.active_job.extensions" do
         ActiveSupport.on_load :active_job do
           include ActiveJob::Querying

lib/mission_control/jobs/tasks.rb

@@ -0,0 +1,8 @@
+namespace :mission_control do
+  namespace :jobs do
+    desc "Configure HTTP Basic Authentication"
+    task "authentication:configure" => :environment do
+      MissionControl::Jobs::Authentication.configure
+    end
+  end
+end

lib/tasks/mission_control/jobs_tasks.rake

@@ -12,6 +12,13 @@ Gem::Specification.new do |spec|
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/rails/mission_control-jobs"
 
+  spec.post_install_message = <<~MESSAGE
+    Upgrading to Mission Control – Jobs 1.0.0? HTTP Basic authentication has been added by default, and it needs
+    to be configured or disabled before you can access the dashboard.
+    --> Check https://github.com/rails/mission_control-jobs?tab=readme-ov-file#authentication
+    for more details and instructions.
+  MESSAGE
+
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
     Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
   end

mission_control-jobs.gemspec

@@ -0,0 +1 @@
+67f819f011ec672273c91cf789afb5d7