87 lines
2.8 KiB
Ruby
87 lines
2.8 KiB
Ruby
# Be sure to restart your server when you modify this file.
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require 'securerandom'
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# Transition material in .secret to the secret_key_base key in config/secrets.yml.
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# Historically, ENV['SECRET_KEY_BASE'] takes precedence over .secret, so we maintain that
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# behavior.
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#
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# It also used to be the case that the key material in ENV['SECRET_KEY_BASE'] or .secret
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# was used to encrypt OTP (two-factor authentication) data so if present, we copy that key
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# material into config/secrets.yml under otp_key_base.
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#
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# Finally, if we have successfully migrated all secrets to config/secrets.yml, delete the
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# .secret file to avoid confusion.
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#
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def create_tokens
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secret_file = Rails.root.join('.secret')
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file_secret_key = File.read(secret_file).chomp if File.exist?(secret_file)
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env_secret_key = ENV['SECRET_KEY_BASE']
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# Ensure environment variable always overrides secrets.yml.
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Rails.application.secrets.secret_key_base = env_secret_key if env_secret_key.present?
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defaults = {
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secret_key_base: file_secret_key || generate_new_secure_token,
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otp_key_base: env_secret_key || file_secret_key || generate_new_secure_token,
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db_key_base: generate_new_secure_token
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}
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missing_secrets = set_missing_keys(defaults)
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write_secrets_yml(missing_secrets) unless missing_secrets.empty?
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begin
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File.delete(secret_file) if file_secret_key
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rescue => e
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warn "Error deleting useless .secret file: #{e}"
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end
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end
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def generate_new_secure_token
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SecureRandom.hex(64)
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end
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def warn_missing_secret(secret)
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warn "Missing Rails.application.secrets.#{secret} for #{Rails.env} environment. The secret will be generated and stored in config/secrets.yml."
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end
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def set_missing_keys(defaults)
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defaults.stringify_keys.each_with_object({}) do |(key, default), missing|
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if Rails.application.secrets[key].blank?
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warn_missing_secret(key)
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missing[key] = Rails.application.secrets[key] = default
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end
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end
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end
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def write_secrets_yml(missing_secrets)
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secrets_yml = Rails.root.join('config/secrets.yml')
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rails_env = Rails.env.to_s
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secrets = YAML.load_file(secrets_yml) if File.exist?(secrets_yml)
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secrets ||= {}
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secrets[rails_env] ||= {}
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secrets[rails_env].merge!(missing_secrets) do |key, old, new|
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# Previously, it was possible this was set to the literal contents of an Erb
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# expression that evaluated to an empty value. We don't want to support that
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# specifically, just ensure we don't break things further.
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#
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if old.present?
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warn <<EOM
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Rails.application.secrets.#{key} was blank, but the literal value in config/secrets.yml was:
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#{old}
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This probably isn't the expected value for this secret. To keep using a literal Erb string in config/secrets.yml, replace `<%` with `<%%`.
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EOM
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exit 1 # rubocop:disable Rails/Exit
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end
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new
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end
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File.write(secrets_yml, YAML.dump(secrets), mode: 'w', perm: 0600)
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end
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create_tokens
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