forked from Archive/PX4-Autopilot
152 lines
4.7 KiB
C
152 lines
4.7 KiB
C
/****************************************************************************
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* apps/netutils/ftpc/ftpc_rpwd.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "ftpc_config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <debug.h>
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#include <apps/ftpc.h>
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#include "ftpc_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ftpc_rpwd
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*
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* Descripton:
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* Returns the current working directory on the remote server.
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*
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****************************************************************************/
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FAR char *ftpc_rpwd(SESSION handle)
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{
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FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
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FAR char *start;
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FAR char *end;
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FAR char *pwd;
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FAR char *ptr;
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int len;
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int ret;
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/* Send the PWD command */
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ret = ftpc_cmd(session, "PWD");
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/* Response is like: 257 "/home/gnutt" (from vsftpd).
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*
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* Extract the quoated path name into allocated memory.
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*/
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start = strchr(session->reply, '\"');
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if (!start)
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{
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ndbg("Opening quote not found\n");
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return NULL;
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}
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start++;
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end = strchr(start, '\"');
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if (!end)
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{
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ndbg("Closing quote not found\n");
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return NULL;
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}
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/* Allocate memory for the path name:
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*
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* Reply: 257 "/home/gnutt"
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* ^start ^end
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*
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* len = end - start + 1 = 11 (+ NUL terminator)
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*/
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len = end - start + 1;
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pwd = (char *)malloc(len + 1);
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if (!pwd)
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{
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ndbg("Failed to allocate string\n");
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return NULL;
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}
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/* Copy the string into the allocated memory */
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memcpy(pwd, start, len);
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pwd[len] = '\0';
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/* Remove any trailing slashes that the server may have added */
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ftpc_stripslash(pwd);
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/* Change DOS style directory separator ('\') to UNIX style ('/') */
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for (ptr = pwd; *ptr; ptr++)
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{
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if (*ptr == '\\')
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{
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*ptr = '/';
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}
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}
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return pwd;
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}
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