Class: EchSpec::CLI::Resolve

Inherits:
Object
  • Object
show all
Includes:
EchConfigPrinter
Defined in:
lib/echspec/cli/resolve.rb

Instance Method Summary collapse

Methods included from EchConfigPrinter

#evaluate_widths, #field_pairs, #print_ech_configs, #print_field

Instance Method Details

#execute(argv) ⇒ Object 



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# File 'lib/echspec/cli/resolve.rb', line 5

def execute(argv)
  fpath, well_known, hostname = parse_options(argv)

  result = if !fpath.nil?
             Spec::Spec9.parse_pem(File.read(fpath))
           elsif well_known
             Spec::Spec9.well_known_origin_svcb(hostname)
           else
             Spec::Spec9.resolve_ech_configs(hostname)
           end

  case result
  in Ok(ech_configs)
    print_ech_configs(ech_configs)
  in Err(details, _)
    warn "** #{details}"
    exit 1
  end
end

#parse_options(argv) ⇒ Object

rubocop: disable Metrics/MethodLength



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# File 'lib/echspec/cli/resolve.rb', line 26

def parse_options(argv)
  op = OptionParser.new
  fpath = nil
  well_known = false

  op.on(
    '-f',
    '--file FILE',
    'path to ECHConfigs PEM file       (default resolve ECHConfigs via DNS)'
  ) do |v|
    fpath = v
  end

  op.on(
    '-w',
    '--well-known',
    'resolve ECHConfigs via well-known URI, instead of DNS'
  ) do
    well_known = true
  end

  op.banner = <<~USAGE
    Usage: echspec resolve [OPTIONS...] [{HOSTNAME}]

    Resolve ECHConfigs for a hostname and print fields.
    {HOSTNAME} is required unless -f is specified.

    Examples:

      $ echspec resolve localhost
      $ echspec resolve -w localhost
      $ echspec resolve -f echconfigs.pem

    Options:
  USAGE

  begin
    args = op.parse(argv)
  rescue OptionParser::InvalidOption, OptionParser::MissingArgument => e
    warn op
    warn "** #{e.message}"
    exit 1
  end

  if !fpath.nil? && !File.exist?(fpath)
    warn '** {FILE} is not found'
    exit 1
  end

  if fpath.nil? && args.length != 1
    warn op
    warn '** {HOSTNAME} argument is not specified'
    exit 1
  end

  [fpath, well_known, args[0]]
end