Method: Mechanize::HTTP::WWWAuthenticateParser#parse

Defined in:
lib/mechanize/http/www_authenticate_parser.rb

#parse(www_authenticate) ⇒ Object

Parsers the header. Returns an Array of challenges as strings



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# File 'lib/mechanize/http/www_authenticate_parser.rb', line 22

def parse www_authenticate
  challenges = []
  @scanner = StringScanner.new www_authenticate

  while true do
    break if @scanner.eos?
    start = @scanner.pos
    challenge = Mechanize::HTTP::AuthChallenge.new

    scheme = auth_scheme

    if scheme == 'Negotiate'
      scan_comma_spaces
    end

    break unless scheme
    challenge.scheme = scheme

    space = spaces

    if scheme == 'NTLM' then
      if space then
        challenge.params = @scanner.scan(/.*/)
      end

      challenge.raw = www_authenticate[start, @scanner.pos]
      challenges << challenge
      next
    else
      scheme.capitalize!
    end

    next unless space

    params = {}

    while true do
      pos = @scanner.pos
      name, value = auth_param

      name.downcase! if name =~ /^realm$/i

      unless name then
        challenge.params = params
        challenges << challenge

        if @scanner.eos? then
          challenge.raw = www_authenticate[start, @scanner.pos]
          break
        end

        @scanner.pos = pos # rewind
        challenge.raw = www_authenticate[start, @scanner.pos].sub(/(,+)? *$/, '')
        challenge = nil # a token should be next, new challenge
        break
      else
        params[name] = value
      end

      spaces

      @scanner.scan(/(, *)+/)
    end
  end

  challenges
end