forked from xuos/xiuos
Add nuttx to the system framework, which is 10.1.0
This commit is contained in:
TangYiwen123
271
Ubiquitous/Nuttx/apps/netutils/ftpc/ftpc_getreply.c
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271
Ubiquitous/Nuttx/apps/netutils/ftpc/ftpc_getreply.c
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/****************************************************************************
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* apps/netutils/ftpc/ftpc_getreply.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 "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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* Name: ftpc_gets
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****************************************************************************/
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static int ftpc_gets(struct ftpc_session_s *session)
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{
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int ch;
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int ndx = 0;
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/* Start with an empty response string */
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session->reply[0] = '\0';
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/* Verify that the command channel is still connected */
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if (!ftpc_sockconnected(&session->cmd))
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{
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nwarn("WARNING: Cmd channel disconnected\n");
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return ERROR;
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}
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/* Loop until the full line is obtained */
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for (; ; )
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{
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/* Get the next character from incoming command stream */
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ch = ftpc_sockgetc(&session->cmd);
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/* Check if the command stream was closed */
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if (ch == EOF)
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{
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nwarn("WARNING: EOF: Server closed command stream\n");
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ftpc_reset(session);
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return ERROR;
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}
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/* Handle embedded Telnet stuff */
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else if (ch == TELNET_IAC)
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{
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/* Handle TELNET commands */
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switch (ch = ftpc_sockgetc(&session->cmd))
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{
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case TELNET_WILL:
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case TELNET_WONT:
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ch = ftpc_sockgetc(&session->cmd);
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ftpc_sockprintf(&session->cmd, "%c%c%c",
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TELNET_IAC, TELNET_DONT, ch);
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ftpc_sockflush(&session->cmd);
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break;
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case TELNET_DO:
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case TELNET_DONT:
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ch = ftpc_sockgetc(&session->cmd);
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ftpc_sockprintf(&session->cmd, "%c%c%c",
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TELNET_IAC, TELNET_WONT, ch);
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ftpc_sockflush(&session->cmd);
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break;
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default:
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break;
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}
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continue;
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}
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/* Deal with carriage returns */
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else if (ch == ISO_CR)
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{
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/* What follows the carriage return? */
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ch = ftpc_sockgetc(&session->cmd);
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if (ch == '\0')
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{
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/* If it is followed by a NUL then keep it */
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ch = ISO_CR;
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}
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/* If it is followed by a newline then break out of the loop. */
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else if (ch == ISO_NL)
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{
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/* Newline terminates the reply */
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break;
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}
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/* If we did not lose the connection, then push the character
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* following the carriage back on the "stack" and continue to
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* examine it from scratch (if could be part of the Telnet
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* protocol).
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*/
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else if (ch != EOF)
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{
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ungetc(ch, session->cmd.instream);
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continue;
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}
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}
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else if (ch == ISO_NL)
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{
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/* The ISO newline character terminates the string. Just break
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* out of the loop.
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*/
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break;
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}
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/* Put the character into the response buffer. Is there space for
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* another character in the reply buffer?
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*/
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if (ndx < CONFIG_FTP_MAXREPLY)
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{
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/* Yes.. put the character in the reply buffer */
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session->reply[ndx++] = (char)ch;
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}
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else
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{
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nwarn("WARNING: Reply truncated\n");
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}
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}
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session->reply[ndx] = '\0';
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session->code = atoi(session->reply);
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return session->code;
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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_getreply
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****************************************************************************/
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int fptc_getreply(struct ftpc_session_s *session)
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{
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char tmp[5] = "xxx ";
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int ret;
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/* Set up a timeout */
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if (session->replytimeo)
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{
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ret = wd_start(&session->wdog, session->replytimeo,
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ftpc_timeout, (wdparm_t)session);
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}
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/* Get the next line from the server */
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ret = ftpc_gets(session);
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/* Do we still have a connection? */
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if (!ftpc_sockconnected(&session->cmd))
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{
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/* No.. cancel the timer and return an error */
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wd_cancel(&session->wdog);
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ninfo("Lost connection\n");
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return ERROR;
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}
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/* Did an error occur? */
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if (ret < 0)
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{
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/* No.. cancel the timer and return an error */
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wd_cancel(&session->wdog);
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ninfo("ftpc_gets failed\n");
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return ERROR;
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}
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ninfo("Reply: %s\n", session->reply);
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if (session->reply[3] == '-')
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{
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/* Multi-line response */
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strncpy(tmp, session->reply, 3);
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do
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{
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if (ftpc_gets(session) == -1)
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{
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break;
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}
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ninfo("Reply: %s\n", session->reply);
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}
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while (strncmp(tmp, session->reply, 4) != 0);
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}
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wd_cancel(&session->wdog);
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return ret;
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}
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