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/****************************************************************************
* apps/netutils/ftpc/ftpc_rpwd.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdlib.h>
#include <string.h>
#include <debug.h>
#include <apps/ftpc.h>
#include "ftpc_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ftpc_rpwd
*
* Descripton:
* Returns the current working directory on the remote server.
*
****************************************************************************/
FAR char *ftpc_rpwd(SESSION handle)
{
FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
FAR char *start;
FAR char *end;
FAR char *pwd;
FAR char *ptr;
int len;
/* Send the PWD command */
(void)ftpc_cmd(session, "PWD");
/* Response is like: 257 "/home/gnutt" (from vsftpd).
*
* Extract the quoated path name into allocated memory.
*/
start = strchr(session->reply, '\"');
if (!start)
{
ndbg("Opening quote not found\n");
return NULL;
}
start++;
end = strchr(start, '\"');
if (!end)
{
ndbg("Closing quote not found\n");
return NULL;
}
/* Allocate memory for the path name:
*
* Reply: 257 "/home/gnutt"
* ^start ^end
*
* len = end - start + 1 = 11 (+ NUL terminator)
*/
len = end - start + 1;
pwd = (char *)malloc(len + 1);
if (!pwd)
{
ndbg("Failed to allocate string\n");
return NULL;
}
/* Copy the string into the allocated memory */
memcpy(pwd, start, len);
pwd[len] = '\0';
/* Remove any trailing slashes that the server may have added */
ftpc_stripslash(pwd);
/* Change DOS style directory separator ('\') to UNIX style ('/') */
for (ptr = pwd; *ptr; ptr++)
{
if (*ptr == '\\')
{
*ptr = '/';
}
}
return pwd;
}
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