debian-mirror-gitlab/config/initializers/01_secret_token.rb

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# WARNING: Before you make a change to secrets.yml, read the development guide for GitLab secrets
# doc/development/application_secrets.md.
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#
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# This file needs to be loaded BEFORE any initializers that attempt to
# prepend modules that require access to secrets (e.g. EE's 0_as_concern.rb).
#
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# Be sure to restart your server when you modify this file.
require 'securerandom'
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# Transition material in .secret to the secret_key_base key in config/secrets.yml.
# Historically, ENV['SECRET_KEY_BASE'] takes precedence over .secret, so we maintain that
# behavior.
#
# It also used to be the case that the key material in ENV['SECRET_KEY_BASE'] or .secret
# was used to encrypt OTP (two-factor authentication) data so if present, we copy that key
# material into config/secrets.yml under otp_key_base.
#
# Finally, if we have successfully migrated all secrets to config/secrets.yml, delete the
# .secret file to avoid confusion.
#
def create_tokens
secret_file = Rails.root.join('.secret')
file_secret_key = File.read(secret_file).chomp if File.exist?(secret_file)
env_secret_key = ENV['SECRET_KEY_BASE']
# Ensure environment variable always overrides secrets.yml.
Rails.application.secrets.secret_key_base = env_secret_key if env_secret_key.present?
defaults = {
secret_key_base: file_secret_key || generate_new_secure_token,
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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openid_connect_signing_key: generate_new_rsa_private_key
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}
missing_secrets = set_missing_keys(defaults)
write_secrets_yml(missing_secrets) unless missing_secrets.empty?
begin
File.delete(secret_file) if file_secret_key
rescue => e
warn "Error deleting useless .secret file: #{e}"
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end
end
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def generate_new_secure_token
SecureRandom.hex(64)
end
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def generate_new_rsa_private_key
OpenSSL::PKey::RSA.new(2048).to_pem
end
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def warn_missing_secret(secret)
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return if Rails.env.test?
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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."
end
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def set_missing_keys(defaults)
defaults.stringify_keys.each_with_object({}) do |(key, default), missing|
if Rails.application.secrets[key].blank?
warn_missing_secret(key)
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missing[key] = Rails.application.secrets[key] = default
end
end
end
def write_secrets_yml(missing_secrets)
secrets_yml = Rails.root.join('config/secrets.yml')
rails_env = Rails.env.to_s
secrets = YAML.load_file(secrets_yml) if File.exist?(secrets_yml)
secrets ||= {}
secrets[rails_env] ||= {}
secrets[rails_env].merge!(missing_secrets) do |key, old, new|
# Previously, it was possible this was set to the literal contents of an Erb
# expression that evaluated to an empty value. We don't want to support that
# specifically, just ensure we don't break things further.
#
if old.present?
warn <<EOM
Rails.application.secrets.#{key} was blank, but the literal value in config/secrets.yml was:
#{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 `<%%`.
EOM
exit 1 # rubocop:disable Rails/Exit
end
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