class Gem::Commands::CertCommand

# File lib/rubygems/commands/cert_command.rb, line 6
def initialize
  super 'cert', 'Manage RubyGems certificates and signing settings',
        :add => [], :remove => [], :list => [], :build => [], :sign => []

  add_option('-a', '--add CERT',
             'Add a trusted certificate.') do |cert_file, options|
    options[:add] << open_cert(cert_file)
  end

  add_option('-l', '--list [FILTER]',
             'List trusted certificates where the',
             'subject contains FILTER') do |filter, options|
    filter ||= ''

    options[:list] << filter
  end

  add_option('-r', '--remove FILTER',
             'Remove trusted certificates where the',
             'subject contains FILTER') do |filter, options|
    options[:remove] << filter
  end

  add_option('-b', '--build EMAIL_ADDR',
             'Build private key and self-signed',
             'certificate for EMAIL_ADDR') do |email_address, options|
    options[:build] << email_address
  end

  add_option('-C', '--certificate CERT',
             'Signing certificate for --sign') do |cert_file, options|
    options[:issuer_cert] = open_cert(cert_file)
    options[:issuer_cert_file] = cert_file
  end

  add_option('-K', '--private-key KEY',
             'Key for --sign or --build') do |key_file, options|
    options[:key] = open_private_key(key_file)
  end

  add_option('-A', '--key-algorithm ALGORITHM',
             'Select which key algorithm to use for --build') do |algorithm, options|
    options[:key_algorithm] = algorithm
  end

  add_option('-s', '--sign CERT',
             'Signs CERT with the key from -K',
             'and the certificate from -C') do |cert_file, options|
    raise Gem::OptionParser::InvalidArgument, "#{cert_file}: does not exist" unless
      File.file? cert_file

    options[:sign] << cert_file
  end

  add_option('-d', '--days NUMBER_OF_DAYS',
             'Days before the certificate expires') do |days, options|
    options[:expiration_length_days] = days.to_i
  end

  add_option('-R', '--re-sign',
             'Re-signs the certificate from -C with the key from -K') do |resign, options|
    options[:resign] = resign
  end
end

# File lib/rubygems/commands/cert_command.rb, line 137
def build(email)
  if !valid_email?(email)
    raise Gem::CommandLineError, "Invalid email address #{email}"
  end

  key, key_path = build_key
  cert_path = build_cert email, key

  say "Certificate: #{cert_path}"

  if key_path
    say "Private Key: #{key_path}"
    say "Don't forget to move the key file to somewhere private!"
  end
end

# File lib/rubygems/commands/cert_command.rb, line 185
def certificates_matching(filter)
  return enum_for __method__, filter unless block_given?

  Gem::Security.trusted_certificates.select do |certificate, _|
    subject = certificate.subject.to_s
    subject.downcase.index filter
  end.sort_by do |certificate, _|
    certificate.subject.to_a.map {|name, data,| [name, data] }
  end.each do |certificate, path|
    yield certificate, path
  end
end

# File lib/rubygems/commands/cert_command.rb, line 77
def check_openssl
  return if Gem::HAVE_OPENSSL

  alert_error "OpenSSL library is required for the cert command"
  terminate_interaction 1
end

# File lib/rubygems/commands/cert_command.rb, line 107
def execute
  check_openssl

  options[:add].each do |certificate|
    add_certificate certificate
  end

  options[:remove].each do |filter|
    remove_certificates_matching filter
  end

  options[:list].each do |filter|
    list_certificates_matching filter
  end

  options[:build].each do |email|
    build email
  end

  if options[:resign]
    re_sign_cert(
      options[:issuer_cert],
      options[:issuer_cert_file],
      options[:key]
    )
  end

  sign_certificates unless options[:sign].empty?
end

# File lib/rubygems/commands/cert_command.rb, line 244
def load_default_cert
  cert_file = File.join Gem.default_cert_path
  cert = File.read cert_file
  options[:issuer_cert] = OpenSSL::X509::Certificate.new cert
rescue Errno::ENOENT
  alert_error \
    "--certificate not specified and ~/.gem/gem-public_cert.pem does not exist"

  terminate_interaction 1
rescue OpenSSL::X509::CertificateError
  alert_error \
    "--certificate not specified and ~/.gem/gem-public_cert.pem is not valid"

  terminate_interaction 1
end

# File lib/rubygems/commands/cert_command.rb, line 260
def load_default_key
  key_file = File.join Gem.default_key_path
  key = File.read key_file
  passphrase = ENV['GEM_PRIVATE_KEY_PASSPHRASE']
  options[:key] = OpenSSL::PKey.read key, passphrase

rescue Errno::ENOENT
  alert_error \
    "--private-key not specified and ~/.gem/gem-private_key.pem does not exist"

  terminate_interaction 1
rescue OpenSSL::PKey::PKeyError
  alert_error \
    "--private-key not specified and ~/.gem/gem-private_key.pem is not valid"

  terminate_interaction 1
end

# File lib/rubygems/commands/cert_command.rb, line 84
def open_cert(certificate_file)
  check_openssl
  OpenSSL::X509::Certificate.new File.read certificate_file
rescue Errno::ENOENT
  raise Gem::OptionParser::InvalidArgument, "#{certificate_file}: does not exist"
rescue OpenSSL::X509::CertificateError
  raise Gem::OptionParser::InvalidArgument,
    "#{certificate_file}: invalid X509 certificate"
end

# File lib/rubygems/commands/cert_command.rb, line 94
def open_private_key(key_file)
  check_openssl
  passphrase = ENV['GEM_PRIVATE_KEY_PASSPHRASE']
  key = OpenSSL::PKey.read File.read(key_file), passphrase
  raise Gem::OptionParser::InvalidArgument,
    "#{key_file}: private key not found" unless key.private?
  key
rescue Errno::ENOENT
  raise Gem::OptionParser::InvalidArgument, "#{key_file}: does not exist"
rescue OpenSSL::PKey::PKeyError, ArgumentError
  raise Gem::OptionParser::InvalidArgument, "#{key_file}: invalid RSA, DSA, or EC key"
end

# File lib/rubygems/commands/cert_command.rb, line 312
def re_sign_cert(cert, cert_path, private_key)
  Gem::Security::Signer.re_sign_cert(cert, cert_path, private_key) do |expired_cert_path, new_expired_cert_path|
    alert("Your certificate #{expired_cert_path} has been re-signed")
    alert("Your expired certificate will be located at: #{new_expired_cert_path}")
  end
end

# File lib/rubygems/commands/cert_command.rb, line 290
def sign(cert_file)
  cert = File.read cert_file
  cert = OpenSSL::X509::Certificate.new cert

  permissions = File.stat(cert_file).mode & 0777

  issuer_cert = options[:issuer_cert]
  issuer_key = options[:key]

  cert = Gem::Security.sign cert, issuer_key, issuer_cert

  Gem::Security.write cert, cert_file, permissions
end

# File lib/rubygems/commands/cert_command.rb, line 321
def valid_email?(email)
  # It's simple, but is all we need
  email =~ /\A.+@.+\z/
end