# frozen_string_literal: true

##
# This file is part of WhatWeb and may be subject to
# redistribution and commercial restrictions. Please see the WhatWeb
# web site for more information on licensing and terms of use.
# http://www.morningstarsecurity.com/research/whatweb
##
WhatWeb::Plugin.define "WebSocket" do
  @author = "Brendan Coles <bcoles@gmail.com>" # 2011-08-27
  @version = "0.1"
  @description = "WebSocket is a technology providing for bi-directional, full-duplex communications channels, over a single Transmission Control Protocol (TCP) socket. - More info: https://secure.wikimedia.org/wikipedia/en/wiki/WebSocket - Protocol: https://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-12"

  # ShodanHQ results as at 2011-08-27 #
  # 48 for Upgrade: websocket
  #  1 for Sec-WebSocket

  # Matches #
  @matches = [

    # Upgrade Header
    { search: "headers[upgrade]", regexp: /^WebSocket$/i },

    # WebSocket-Location Header
    { search: "headers[websocket-location]", string: /^(wss?:\/\/.+)/ },

    # Sec-WebSocket-Location Header
    { search: "headers[sec-websocket-location]", string: /^(wss?:\/\/.+)/ },

    # Sec-WebSocket-Version-Server Header
    { search: "headers[sec-websocket-version-server]", version: /(.+)/ },

    # Sec-WebSocket-Protocol Header
    { search: "headers[sec-websocket-protocol]", module: /(.+)/ },

  ]
end