text: /*
   * File      : tftp_port.c
   * This file is part of RT-Thread RTOS
   * COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along
   *  with this program; if not, write to the Free Software Foundation, Inc.,
   *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Change Logs:
   * Date           Author       Notes
   * 2017-08-17     armink       first version.
   */
  
  #include <rtthread.h>
  #include <dfs_posix.h>
  #include <lwip/apps/tftp_server.h>
  
  #if defined(RT_USING_LWIP) && (RT_LWIP_TCPTHREAD_STACKSIZE < 1408)
  #error The lwIP tcpip thread stack size(RT_LWIP_TCPTHREAD_STACKSIZE) must more than 1408
  #endif
  
  static struct tftp_context ctx;
  
  static void* tftp_open(const char* fname, const char* mode, u8_t write)
  {
      int fd = -1;
  
      if (!rt_strcmp(mode, "octet"))
      {
          if (write)
          {
              fd = open(fname, O_WRONLY | O_CREAT, 0);
          }
          else
          {
              fd = open(fname, O_RDONLY, 0);
          }
      }
      else
      {
          rt_kprintf("tftp: No support this mode(%s).", mode);
      }
  
      return (void *) fd;
  }
  
  static int tftp_write(void* handle, struct pbuf* p)
  {
      int fd = (int) handle;
  
      return write(fd, p->payload, p->len);
  }
  
  #if defined(RT_USING_FINSH)
  #include <finsh.h>
  
  static void tftp_server(uint8_t argc, char **argv)
  {
      ctx.open = tftp_open;
      ctx.close = (void (*)(void *)) close;
      ctx.read = (int (*)(void *, void *, int)) read;
      ctx.write = tftp_write;
  
      if (tftp_init(&ctx) == ERR_OK)
      {
          rt_kprintf("TFTP server start successfully.\n");
      }
      else
      {
          rt_kprintf("TFTP server start failed.\n");
      }
  }
  FINSH_FUNCTION_EXPORT(tftp_server, start tftp server.);
  
  #if defined(FINSH_USING_MSH)
  MSH_CMD_EXPORT(tftp_server, start tftp server.);
  #endif /* defined(FINSH_USING_MSH) */
  
  #endif /* defined(RT_USING_FINSH) */
  