Land rapid7#9081, Fix ftp.rb to get files larger than 16384

Author: Brent Cook

lib/msf/core/exploit/ftp.rb

@@ -219,7 +219,7 @@ def send_cmd_data(args, data, mode = 'a', nsock = self.sock)
     if (type == "get")
       # failed listings just disconnect..
       begin
-        data = self.datasocket.get_once(-1, ftp_timeout)
+        data = datasocket.get(ftp_timeout, ftp_data_timeout)
       rescue ::EOFError
         data = nil
       end
@@ -341,6 +341,13 @@ def ftp_timeout
     (datastore['FTPTimeout'] || 10).to_i
   end
 
+  #
+  # Returns the number of seconds to wait to get more FTP data
+  #
+  def ftp_data_timeout
+    (datastore['FTPDataTimeout'] || 1).to_i
+  end
+
 protected
 
   #