ftptls.rb

require 'socket'
require 'openssl'
require 'net/ftp'

module Net
  class FTPTLS < FTP
    def login(user = "anonymous", passwd = nil, acct = nil)
       @ctx = OpenSSL::SSL::SSLContext.new('SSLv3')
       @ctx.verify_mode = OpenSSL::SSL::VERIFY_NONE
       voidcmd("AUTH TLS")
       @sock = OpenSSL::SSL::SSLSocket.new(@sock, @ctx)
       @sock.connect
       super(user, passwd, acct)
       voidcmd("PBSZ 0")
       voidcmd("PROT P")
    end

    def transfercmd(cmd, rest_offset = nil)
      conn = super
      conn = OpenSSL::SSL::SSLSocket.new(conn, @ctx)
      conn.connect
      return conn
    end
  end
end