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//==========================================================================
//
// tests/windows_telnet.c
//
// Test program showing how to create a client that dials into
// a Windows PPP server and waits for a telnet session.
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 2003 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
// ####BSDALTCOPYRIGHTBEGIN####
// -------------------------------------------
// Portions of this software may have been derived from FreeBSD, OpenBSD,
// or other sources, and if so are covered by the appropriate copyright
// and license included herein.
// -------------------------------------------
// ####BSDALTCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): oyvind
// Contributors: oyvind harboe
// Date: 2004-06-24
// Purpose:
// Description: Example/test on how to connect to a Windows PPP server
//
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <pkgconf/system.h>
#include <pkgconf/net.h>
#include <network.h>
#include <cyg/ppp/ppp.h>
static char *windows_script[] =
{
"TIMEOUT", "2",
"", "CLIENTCLIENT\\c",
"CLIENTSERVER", "\\c",
0
};
void telnet(void)
{
struct sockaddr_in sin;
struct sockaddr_in pin;
/* get an internet domain socket */
int sd;
if ((sd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
return;
}
/* complete the socket structure */
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons(23);
unsigned int opt = 1;
if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) == -1)
{
goto out;
}
/* bind the socket to the port number */
if (bind(sd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
{
goto out;
}
/* show that we are willing to listen */
if (listen(sd, SOMAXCONN) == -1)
{
goto out;
}
int sd_current;
/* wait for a client to talk to us */
socklen_t addrlen = sizeof(pin);
if ((sd_current = accept(sd, (struct sockaddr *) &pin, &addrlen)) == -1)
{
goto out;
}
for (;;)
{
char *prompt="eCos>";
int promptlen = strlen(prompt);
if (write(sd_current, prompt, promptlen) != promptlen)
{
goto AbortSession;
}
/* get a message from the client */
char dir[256];
int len;
size_t i;
for (i=0; i<sizeof(dir)-1; i++)
{
// returns when a full line has been collected
len=read(sd_current, dir+i, 1);
if (len != 1)
{
goto AbortSession;
}
if (write(sd_current, dir+i, 1)!=1)
{
goto AbortSession;
}
// ignore CR
if (dir[i]=='\r')
{
i--;
}
// Break out on a new line
if (dir[i]=='\n')
{
break;
}
dir[i]=0;
}
}
AbortSession:
/* close up both sockets */
close(sd_current);
out:
close(sd);
}
int main(int argc, char **argv)
{
// Bring up the TCP/IP network
init_all_network_interfaces();
for (;;)
{
cyg_ppp_options_t options;
cyg_ppp_handle_t ppp_handle;
// Initialize the options
cyg_ppp_options_init( &options );
options.script=windows_script;
options.baud = CYGNUM_SERIAL_BAUD_38400;
options.flowctl = CYG_PPP_FLOWCTL_NONE;
options.idle_time_limit = 0; // never shut down.
// Start up PPP
ppp_handle = cyg_ppp_up( "/dev/ser0", &options );
// Wait for it to get running
if( cyg_ppp_wait_up( ppp_handle ) == 0 )
{
// Make use of PPP
for (;;)
{
telnet();
}
// never reached, but for illustration:
// Bring PPP link down
cyg_ppp_down( ppp_handle );
// Wait for connection to go down.
cyg_ppp_wait_down( ppp_handle );
}
}
}
|
