mastodon/config/initializers/cookie_rotator.rb

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# frozen_string_literal: true
# TODO: remove this file some time after 4.3.0
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Rails.application.config.after_initialize do
Rails.application.config.action_dispatch.cookies_rotations.tap do |cookies|
authenticated_encrypted_cookie_salt = Rails.application.config.action_dispatch.authenticated_encrypted_cookie_salt
signed_cookie_salt = Rails.application.config.action_dispatch.signed_cookie_salt
secret_key_base = Rails.application.secret_key_base
key_generator = ActiveSupport::KeyGenerator.new(
secret_key_base, iterations: 1000, hash_digest_class: OpenSSL::Digest::SHA1
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)
key_len = ActiveSupport::MessageEncryptor.key_len
old_encrypted_secret = key_generator.generate_key(authenticated_encrypted_cookie_salt, key_len)
old_signed_secret = key_generator.generate_key(signed_cookie_salt)
cookies.rotate :encrypted, old_encrypted_secret
cookies.rotate :signed, old_signed_secret
end
end