int nsh_session(FAR struct console_stdio_s *pstate)
{
FAR struct nsh_vtbl_s *vtbl;
int ret;
DEBUGASSERT(pstate);
vtbl = &pstate->cn_vtbl;
#ifdef CONFIG_NSH_CONSOLE_LOGIN
/* Login User and Password Check */
if (nsh_login(pstate) != OK)
{
nsh_exit(vtbl, 1);
return -1; /* nsh_exit does not return */
}
#endif /* CONFIG_NSH_CONSOLE_LOGIN */
/* Present a greeting and possibly a Message of the Day (MOTD) */
fputs(g_nshgreeting, pstate->cn_outstream);
#ifdef CONFIG_NSH_MOTD
# ifdef CONFIG_NSH_PLATFORM_MOTD
/* Output the platform message of the day */
platform_motd(vtbl->iobuffer, IOBUFFERSIZE);
fprintf(pstate->cn_outstream, "%s\n", vtbl->iobuffer);
# else
/* Output the fixed message of the day */
fprintf(pstate->cn_outstream, "%s\n", g_nshmotd);
# endif
#endif
fflush(pstate->cn_outstream);
/* Execute the login script */
#ifdef CONFIG_NSH_ROMFSRC
(void)nsh_loginscript(vtbl);
#endif
/* Then enter the command line parsing loop */
for (;;)
{
/* For the case of debugging the USB console... dump collected USB trace data */
#ifdef CONFIG_NSH_USBDEV_TRACE
nsh_usbtrace();
#endif
/* Display the prompt string */
fputs(g_nshprompt, pstate->cn_outstream);
fflush(pstate->cn_outstream);
/* Get the next line of input. readline() returns EOF on end-of-file
* or any read failure.
*/
#ifdef CONFIG_NSH_CLE
ret = cle(pstate->cn_line, CONFIG_NSH_LINELEN,
INSTREAM(pstate), OUTSTREAM(pstate));
#else
ret = readline(pstate->cn_line, CONFIG_NSH_LINELEN,
INSTREAM(pstate), OUTSTREAM(pstate));
#endif
if (ret != EOF)
{
/* Parse process the command */
(void)nsh_parse(vtbl, pstate->cn_line);
fflush(pstate->cn_outstream);
}
/* Readline normally returns the number of characters read,
* but will return EOF on end of file or if an error occurs.
* EOF will cause the session to terminate.
*/
else
{
fprintf(pstate->cn_outstream, g_fmtcmdfailed, "nsh_session",
"readline", NSH_ERRNO_OF(-ret));
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
}
/* We do not get here, but this is necessary to keep some compilers happy.
* But others will complain that this code is not reachable.
*/
return EXIT_SUCCESS;
}
static int nsh_telnetmain(int argc, char *argv[])
{
FAR struct console_stdio_s *pstate = nsh_newconsole();
FAR struct nsh_vtbl_s *vtbl;
DEBUGASSERT(pstate != NULL);
vtbl = &pstate->cn_vtbl;
_info("Session [%d] Started\n", getpid());
#ifdef CONFIG_NSH_TELNET_LOGIN
/* Login User and Password Check */
if (nsh_telnetlogin(pstate) != OK)
{
nsh_exit(vtbl, 1);
return -1; /* nsh_exit does not return */
}
#endif /* CONFIG_NSH_TELNET_LOGIN */
/* The following logic mostly the same as the login in nsh_session.c. It
* differs only in that gets() is called to get the command instead of
* readline().
*/
/* Present a greeting and possibly a Message of the Day (MOTD) */
fputs(g_nshgreeting, pstate->cn_outstream);
#ifdef CONFIG_NSH_MOTD
# ifdef CONFIG_NSH_PLATFORM_MOTD
/* Output the platform message of the day */
platform_motd(vtbl->iobuffer, IOBUFFERSIZE);
fprintf(pstate->cn_outstream, "%s/n", vtbl->iobuffer);
# else
/* Output the fixed message of the day */
fprintf(pstate->cn_outstream, "%s/n", g_nshmotd);
# endif
#endif
fflush(pstate->cn_outstream);
/* Execute the startup script. If standard console is also defined, then
* we will not bother with the initscript here (although it is safe to
* call nshinitscript multiple times).
*/
#if defined(CONFIG_NSH_ROMFSETC) && !defined(CONFIG_NSH_CONSOLE)
(void)nsh_initscript(vtbl);
#endif
/* Execute the login script */
#ifdef CONFIG_NSH_ROMFSRC
(void)nsh_loginscript(vtbl);
#endif
/* Then enter the command line parsing loop */
for (;;)
{
/* Display the prompt string */
fputs(g_nshprompt, pstate->cn_outstream);
fflush(pstate->cn_outstream);
/* Get the next line of input from the Telnet client */
if (fgets(pstate->cn_line, CONFIG_NSH_LINELEN, INSTREAM(pstate)) != NULL)
{
/* Parse process the received Telnet command */
(void)nsh_parse(vtbl, pstate->cn_line);
fflush(pstate->cn_outstream);
}
else
{
fprintf(pstate->cn_outstream, g_fmtcmdfailed, "nsh_telnetmain",
"fgets", NSH_ERRNO);
nsh_exit(vtbl, 1);
}
}
/* Clean up */
nsh_exit(vtbl, 0);
/* We do not get here, but this is necessary to keep some compilers happy */
return OK;
}