px4-firmware/apps/netutils/ftpc/ftpc_filesize.c

113 lines
4.0 KiB
C

/****************************************************************************
* apps/netutils/ftpc/ftpc_filesize.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include "ftpc_config.h"
#include <stdint.h>
#include <stdio.h>
#include <apps/ftpc.h>
#include "ftpc_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ftpc_filesize
*
* Description:
* Return the size of the given file on the remote server.
*
****************************************************************************/
off_t ftpc_filesize(SESSION handle, FAR const char *path)
{
FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
unsigned long ret;
/* Check if the host supports the SIZE command */
if (!FTPC_HAS_SIZE(session))
{
return ERROR;
}
if (ftpc_xfrmode(session, FTPC_XFRMODE_ASCII) != 0)
{
return ERROR;
}
ret = ftpc_cmd(session, "SIZE %s", path);
/* Check for "502 Command not implemented" */
if (session->code == 502)
{
/* No.. the host does not support the SIZE command */
FTPC_CLR_SIZE(session);
return ERROR;
}
sscanf(session->reply, "%*s %lu", &ret);
return (off_t)ret;
}