/****************************************************************************
* apps/netutils/ftpc/ftpc_login.c
*
* Copyright (C) 2011-2012 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 <string.h>
#include <errno.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_login
*
* Description:
* Log into the server
*
****************************************************************************/
int ftpc_login(SESSION handle, FAR struct ftpc_login_s *login)
{
FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
int err;
int ret;
/* Verify that we are connected to a server */
if (!ftpc_connected(session))
{
ndbg("Not connected\n");
err = ENOTCONN;
goto errout_with_err;
}
/* Verify that we are not already logged in to the server */
if (ftpc_loggedin(session))
{
ndbg("Already logged in\n");
err = EINVAL;
goto errout_with_err;
}
/* Save the login parameter */
session->uname = ftpc_dequote(login->uname);
session->pwd = ftpc_dequote(login->pwd);
session->initrdir = ftpc_dequote(login->rdir);
/* Is passive mode requested? */
FTPC_CLR_PASSIVE(session);
if (login->pasv)
{
nvdbg("Setting passive mode\n");
FTPC_SET_PASSIVE(session);
}
/* The (Re-)login to the server */
ret = ftpc_relogin(session);
if (ret != OK)
{
ndbg("login failed: %d\n", errno);
goto errout;
}
return OK;
errout_with_err:
set_errno(err);
errout:
return ERROR;
}
/****************************************************************************
* Name: ftpc_relogin
*
* Description:
* Log in again after a loss of connection
*
****************************************************************************/
int ftpc_relogin(FAR struct ftpc_session_s *session)
{
int ret;
/* Log into the server. First send the USER command. The server may accept
* USER with:
*
* - "230 User logged in, proceed" meaning that the client has permission to
* access files under that username
* - "331 "User name okay, need password" or "332 Need account for login"
* meaning that permission might be granted after a PASS request.
*
* Or the server may reject USER with:
*
* - "530 Not logged in" meaning that the username is unacceptable.
*
* In practice, the server does not check the username until after a PASS
* request
*/
FTPC_CLR_LOGGEDIN(session);
ret = ftpc_cmd(session, "USER %s", session->uname);
if (ret != OK)
{
ndbg("USER %s cmd failed: %d\n", session->uname, errno);
return ERROR;
}
/* Send the PASS command with the passed. The server may accept PASS with:
*
* - "230 User logged in, proceed" meaning that the client has permission to
* access files under that username
* - "202 Command not implemented, superfluous at this site" meaning that
* permission was already granted in response to USER
* - "332 Need account for login" meaning that permission might be granted
* after an ACCT request.
*
* The server may reject PASS with:
*
* - "503 Bad sequence of commands" if the previous request was not USER
* - "530 - Not logged in" if this username and password are unacceptable.
*/
ret = ftpc_cmd(session, "PASS %s", session->pwd);
if (ret != OK)
{
ndbg("PASS %s cmd failed: %d\n", session->pwd, errno);
return ret;
}
/* We are logged in.. the current working directory on login is our "home"
* directory.
*/
FTPC_SET_LOGGEDIN(session);
session->homerdir = ftpc_rpwd((SESSION)session);
session->currdir = strdup(session->homerdir);
/* If the user has requested a special start up directory, then change to
* that directory now.
*/
if (session->initrdir)
{
ftpc_chdir((SESSION)session, session->initrdir);
}
return OK;
}
