Class: Hydra5::Proxy

Inherits:
Object
  • Object
show all
Defined in:
lib/hydra5/proxy.rb

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/hydra5/proxy.rb', line 15

def initialize(options)
  @listen = options.delete(:listen) || 8080
  @user = options.delete(:user) || 'root'
  @key = options.delete(:key)
  @log = Logger.new

  @hosts = options.delete(:hosts)
  @hosts = @hosts.inject({}) {|h,k| h[@hosts.index(k)] = k; h}

  @log.info "Establishing #{@hosts.size} SOCKS5 tunnels"
  @@live = {}
  @pids = []
end

Instance Method Details

#start! ⇒ Object 



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# File 'lib/hydra5/proxy.rb', line 29

def start!
  EM.epoll
  EM.run do
    @hosts.each do |index, host|
      tunnel = <<-CMD
      ssh #{@user}@#{host} -D #{7000 + index} -NT
      -o StrictHostKeyChecking=no
      -o ServerAliveInterval=300
      -o ConnectTimeout=5
      -o ExitOnForwardFailure=yes
      -i #{@key}
      CMD

      @pids << EM.system(tunnel) do |cmd, out|
        @log.error ["Connection closed", out, @hosts[index]]
        @@live.delete(index)

        if @@live.empty?
          @log.info "No live tunnels left, exiting"
          exit
        end
      end

      @@live[index] = host
    end

    at_exit do
      pids = @pids.join(' ')
      unless system("kill #{pids}")
        @log.error "Could not kill all tunnels: #{pids}"
      end
    end

    @log.info "Starting proxy on port #{@listen}"

    ::Proxy.start(:host => "0.0.0.0", :port => @listen, :debug => @verbose) do |conn|
      tunnel = @@live.keys.shuffle.first

      puts "routing connection to #{@@live[tunnel]}"
      conn.server :srv, :host => "127.0.0.1", :port => 7000 + tunnel, :relay_client => true, :relay_server => true
    end
  end
end