Method: Gel::Support::Tar::TarWriter#add_file_signed

Defined in:
lib/gel/support/tar/tar_writer.rb

#add_file_signed(name, mode, signer) ⇒ Object

Adds name with permissions mode to the tar, yielding io for writing the file. The signer is used to add a digest file using its digest_algorithm per add_file_digest and a cryptographic signature in name.sig. If the signer has no key only the checksum file is added.

Returns the digest.



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# File 'lib/gel/support/tar/tar_writer.rb', line 177

def add_file_signed name, mode, signer
  digest_algorithms = [
    signer.digest_algorithm,
    Digest::SHA512,
  ].compact.uniq

  digests = add_file_digest name, mode, digest_algorithms do |io|
    yield io
  end

  signature_digest = digests.values.compact.find do |digest|
    digest_name =
      if digest.respond_to? :name then
        digest.name
      else
        /::([^:]+)$/ =~ digest.class.name
        $1
      end

    digest_name == signer.digest_name
  end

  if signer.key then
    signature = signer.sign signature_digest.digest

    add_file_simple "#{name}.sig", 0444, signature.length do |io|
      io.write signature
    end
  end

  digests
end