Class: LocalTunnel::Tunnel

Inherits:
Object
  • Object
show all
Defined in:
lib/localtunnel/tunnel.rb,
lib/localtunnel/tunnel_app.rb

Defined Under Namespace

Classes: TunnelApp

Constant Summary collapse

SHELL_HOOK_FILE = 
"./.localtunnel_callback"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(port, key) ⇒ Tunnel

Returns a new instance of Tunnel.



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# File 'lib/localtunnel/tunnel.rb', line 20

def initialize(port, key)
  @port = port
  @key  = key
  @host = ""
end

Instance Attribute Details

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/localtunnel/tunnel.rb', line 18

def host
  @host
end

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/localtunnel/tunnel.rb', line 18

def key
  @key
end

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/localtunnel/tunnel.rb', line 18

def port
  @port
end

Instance Method Details

#register_tunnel(key = @key) ⇒ Object 



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# File 'lib/localtunnel/tunnel.rb', line 26

def register_tunnel(key=@key)
  url = URI.parse("http://open.localtunnel.com/")
  if key
    resp = JSON.parse(Net::HTTP.post_form(url, {"key" => key}).body)
  else
    resp = JSON.parse(Net::HTTP.get(url))
  end
  if resp.has_key? 'error'
    puts "   [Error] #{resp['error']}"
    exit
  end
  @host = resp['host'].split(':').first
  @tunnel = resp
  return resp
rescue
  puts "   [Error] Unable to register tunnel. Perhaps service is down?"
  exit
end

#start_tunnel ⇒ Object 



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# File 'lib/localtunnel/tunnel.rb', line 45

def start_tunnel
  port = @port
  tunnel = @tunnel
  gateway = Net::SSH::Gateway.new(@host, tunnel['user'], :auth_methods => %w{ publickey })
  gateway.open_remote(port.to_i, '127.0.0.1', tunnel['through_port'].to_i) do |rp,rh|
    puts "   " << tunnel['banner'] if tunnel.has_key? 'banner'
    if File.exists?(File.expand_path(SHELL_HOOK_FILE))
      system "#{SHELL_HOOK_FILE} ""#{tunnel['host']}""" if File.exists?(File.expand_path(SHELL_HOOK_FILE))
      if !$?.success?
        puts "   An error occurred executing the callback hook #{SHELL_HOOK_FILE}"
        puts "   (Make sure it is executable)"
      end
    end
    TunnelApp.tunnel = tunnel['host']
    pid = fork {
      TunnelApp.run!
    }
    puts "   Port #{port} is now publicly accessible from http://#{tunnel['host']} ..."
    begin
      sleep 1 while true
    rescue Interrupt
      Process.kill('KILL', pid)
      Process.waitpid(pid)
      gateway.close_remote(rp, rh)
      exit
    end
  end
rescue Net::SSH::AuthenticationFailed
  possible_key = Dir[File.expand_path('~/.ssh/*.pub')].first
  puts "   Failed to authenticate. If this is your first tunnel, you need to"
  puts "   upload a public key using the -k option. Try this:\n\n"
  puts "   localtunnel -k #{possible_key ? possible_key : '~/path/to/key'} #{port}"
  exit
end