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# frozen_string_literal: true
module Gitlab
module Kubernetes
module Helm
module V2
class Certificate
INFINITE_EXPIRY = 1000.years
SHORT_EXPIRY = 30.minutes
attr_reader :key, :cert
def key_string
@key.to_s
end
def cert_string
@cert.to_pem
end
def self.from_strings(key_string, cert_string)
key = OpenSSL::PKey::RSA.new(key_string)
cert = OpenSSL::X509::Certificate.new(cert_string)
new(key, cert)
end
def self.generate_root
_issue(signed_by: nil, expires_in: INFINITE_EXPIRY, certificate_authority: true)
end
def issue(expires_in: SHORT_EXPIRY)
self.class._issue(signed_by: self, expires_in: expires_in, certificate_authority: false)
end
private
def self._issue(signed_by:, expires_in:, certificate_authority:)
key = OpenSSL::PKey::RSA.new(4096)
public_key = key.public_key
subject = OpenSSL::X509::Name.parse("/C=US")
cert = OpenSSL::X509::Certificate.new
cert.subject = subject
cert.issuer = signed_by&.cert&.subject || subject
cert.not_before = Time.now.utc
cert.not_after = expires_in.from_now.utc
cert.public_key = public_key
cert.serial = 0x0
cert.version = 2
if certificate_authority
extension_factory = OpenSSL::X509::ExtensionFactory.new
extension_factory.subject_certificate = cert
extension_factory.issuer_certificate = cert
cert.add_extension(extension_factory.create_extension('subjectKeyIdentifier', 'hash'))
cert.add_extension(extension_factory.create_extension('basicConstraints', 'CA:TRUE', true))
cert.add_extension(extension_factory.create_extension('keyUsage', 'cRLSign,keyCertSign', true))
end
cert.sign(signed_by&.key || key, OpenSSL::Digest::SHA256.new)
new(key, cert)
end
def initialize(key, cert)
@key = key
@cert = cert
end
end
end
end
end
end
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