188 lines
6.3 KiB
C
188 lines
6.3 KiB
C
/****************************************************************************
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* apps/nshlib/nsh_telnetd.c
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*
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* Copyright (C) 2007-2012 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 Gregory Nutt 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 <nuttx/config.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <assert.h>
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#include <debug.h>
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#include <apps/netutils/telnetd.h>
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#include "nsh.h"
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#include "nsh_console.h"
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#ifdef CONFIG_NSH_TELNET
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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 Function Prototypes
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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: nsh_telnetmain
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****************************************************************************/
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int nsh_telnetmain(int argc, char *argv[])
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{
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FAR struct console_stdio_s *pstate = nsh_newconsole();
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DEBUGASSERT(pstate != NULL);
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dbg("Session [%d] Started\n", getpid());
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/* Present a greeting */
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fputs(g_nshgreeting, pstate->cn_outstream);
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fflush(pstate->cn_outstream);
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/* Execute the startup script */
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#if defined(CONFIG_NSH_ROMFSETC) && !defined(CONFIG_NSH_CONSOLE)
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(void)nsh_script(&pstate->cn_vtbl, "init", NSH_INITPATH);
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#endif
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/* Then enter the command line parsing loop */
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for (;;)
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{
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/* Display the prompt string */
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fputs(g_nshprompt, pstate->cn_outstream);
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fflush(pstate->cn_outstream);
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/* Get the next line of input from the Telnet client */
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if (fgets(pstate->cn_line, CONFIG_NSH_LINELEN, INSTREAM(pstate)) != NULL)
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{
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/* Parse process the received Telnet command */
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(void)nsh_parse(&pstate->cn_vtbl, pstate->cn_line);
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fflush(pstate->cn_outstream);
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}
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else
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{
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fprintf(pstate->cn_outstream, g_fmtcmdfailed, "nsh_telnetmain",
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"fgets", NSH_ERRNO);
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nsh_exit(&pstate->cn_vtbl, 1);
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}
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}
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/* Clean up */
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nsh_exit(&pstate->cn_vtbl, 0);
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/* We do not get here, but this is necessary to keep some compilers happy */
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return OK;
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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: nsh_telnetstart
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*
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* Description:
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* nsh_telnetstart() starts the Telnet daemon that will allow multiple
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* NSH connections via Telnet. This function returns immediately after
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* the daemon has been started.
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*
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* Input Parameters:
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* None. All of the properties of the Telnet daemon are controlled by
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* NuttX configuration setting.
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*
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* Returned Values:
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* Zero if the Telnet daemon was successfully started. A negated errno
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* value will be returned on failure.
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*
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****************************************************************************/
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int nsh_telnetstart(void)
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{
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struct telnetd_config_s config;
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int ret;
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/* Configure the telnet daemon */
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config.d_port = HTONS(CONFIG_NSH_TELNETD_PORT);
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config.d_priority = CONFIG_NSH_TELNETD_DAEMONPRIO;
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config.d_stacksize = CONFIG_NSH_TELNETD_DAEMONSTACKSIZE;
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config.t_priority = CONFIG_NSH_TELNETD_CLIENTPRIO;
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config.t_stacksize = CONFIG_NSH_TELNETD_CLIENTSTACKSIZE;
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config.t_entry = nsh_telnetmain;
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/* Start the telnet daemon */
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vdbg("Starting the Telnet daemon\n");
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ret = telnetd_start(&config);
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if (ret < 0)
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{
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dbg("Failed to tart the Telnet daemon: %d\n", ret);
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}
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return ret;
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}
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#endif /* CONFIG_NSH_TELNET */
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