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EDIT :: trust_dir.rb

# frozen_string_literal: true ## # The TrustDir manages the trusted certificates for gem signature # verification. class Gem::Security::TrustDir ## # Default permissions for the trust directory and its contents DEFAULT_PERMISSIONS = { :trust_dir => 0700, :trusted_cert => 0600, }.freeze ## # The directory where trusted certificates will be stored. attr_reader :dir ## # Creates a new TrustDir using +dir+ where the directory and file # permissions will be checked according to +permissions+ def initialize(dir, permissions = DEFAULT_PERMISSIONS) @dir = dir @permissions = permissions @digester = Gem::Security.create_digest end ## # Returns the path to the trusted +certificate+ def cert_path(certificate) name_path certificate.subject end ## # Enumerates trusted certificates. def each_certificate return enum_for __method__ unless block_given? glob = File.join @dir, '*.pem' Dir[glob].each do |certificate_file| begin certificate = load_certificate certificate_file yield certificate, certificate_file rescue OpenSSL::X509::CertificateError next # HACK warn end end end ## # Returns the issuer certificate of the given +certificate+ if it exists in # the trust directory. def issuer_of(certificate) path = name_path certificate.issuer return unless File.exist? path load_certificate path end ## # Returns the path to the trusted certificate with the given ASN.1 +name+ def name_path(name) digest = @digester.hexdigest name.to_s File.join @dir, "cert-#{digest}.pem" end ## # Loads the given +certificate_file+ def load_certificate(certificate_file) pem = File.read certificate_file OpenSSL::X509::Certificate.new pem end ## # Add a certificate to trusted certificate list. def trust_cert(certificate) verify destination = cert_path certificate File.open destination, 'wb', 0600 do |io| io.write certificate.to_pem io.chmod(@permissions[:trusted_cert]) end end ## # Make sure the trust directory exists. If it does exist, make sure it's # actually a directory. If not, then create it with the appropriate # permissions. def verify require 'fileutils' if File.exist? @dir raise Gem::Security::Exception, "trust directory #{@dir} is not a directory" unless File.directory? @dir FileUtils.chmod 0700, @dir else FileUtils.mkdir_p @dir, :mode => @permissions[:trust_dir] end end end

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