Ensure the app does not even start if OTP_SECRET is not set (#6557)

* Ensure the app does not even start if OTP_SECRET is not set

* Remove PAPERCLIP_SECRET (it's not used by anything, actually)

Imports are for internal consumption and the url option isn't even
used correctly, so we can remove the hash stuff from them

.env.production.sample

@@ -33,7 +33,6 @@ LOCAL_DOMAIN=example.com
 
 # Application secrets
 # Generate each with the `RAILS_ENV=production bundle exec rake secret` task (`docker-compose run --rm web rake secret` if you use docker compose)
-PAPERCLIP_SECRET=
 SECRET_KEY_BASE=
 OTP_SECRET=
 

app/models/import.rb

@@ -26,7 +26,7 @@ class Import < ApplicationRecord
 
   validates :type, presence: true
 
-  has_attached_file :data, url: '/system/:hash.:extension', hash_secret: ENV['PAPERCLIP_SECRET']
+  has_attached_file :data
   validates_attachment_content_type :data, content_type: FILE_TYPES
   validates_attachment_presence :data
 end

app/models/user.rb

@@ -44,7 +44,7 @@ class User < ApplicationRecord
   ACTIVE_DURATION = 14.days
 
   devise :two_factor_authenticatable,
-         otp_secret_encryption_key: ENV['OTP_SECRET']
+         otp_secret_encryption_key: ENV.fetch('OTP_SECRET')
 
   devise :two_factor_backupable,
          otp_number_of_backup_codes: 10

lib/tasks/mastodon.rake

@@ -23,7 +23,7 @@ namespace :mastodon do
       prompt.say('Single user mode disables registrations and redirects the landing page to your public profile.')
       env['SINGLE_USER_MODE'] = prompt.yes?('Do you want to enable single user mode?', default: false)
 
-      %w(SECRET_KEY_BASE PAPERCLIP_SECRET OTP_SECRET).each do |key|
+      %w(SECRET_KEY_BASE OTP_SECRET).each do |key|
         env[key] = SecureRandom.hex(64)
       end