nes-proj/backyard/core/net/ppp/pap.c

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/*www.mycal.net
*---------------------------------------------------------------------------
*pap.c - PAP processor for the PPP module - -
*---------------------------------------------------------------------------
*Version - 0.1 Original Version Jun 3, 2000 - -
*---------------------------------------------------------------------------
*- Copyright (C) 2000, Mycal Labs www.mycal.com - -
*---------------------------------------------------------------------------
*/
/*
* Copyright (c) 2003, Mike Johnson, Mycal Labs, www.mycal.net
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mike Johnson/Mycal Labs
* www.mycal.net.
* 4. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* This file is part of the Mycal Modified uIP TCP/IP stack.
*
* $Id: pap.c,v 1.1 2007/05/26 07:14:39 oliverschmidt Exp $
*
*/
/* */
/* include files */
/* */
#include <string.h>
#include "ppp.h"
#include "pap.h"
#include "lcp.h"
#if 0
#define DEBUG1(x)
#else
#include <stdio.h>
#define DEBUG1(x) debug_printf x
#endif
/*#include "time.h"*/
/*#include "utils.h" */
#define TIMER_expire()
#define TIMER_set()
#define TIMER_timeout(x) 1
u8_t pap_state;
#ifdef PAP_USERNAME
u8_t pap_username[] = PAP_USERNAME;
#else
u8_t pap_username[PAP_USERNAME_SIZE];
#endif
#ifdef PAP_PASSWORD
u8_t pap_password[] = PAP_PASSWORD;
#else
u8_t pap_password[PAP_PASSWORD_SIZE];
#endif
/*u16_t pap_tx_time;
u8_t pap_timeout;*/
/*---------------------------------------------------------------------------*/
void
pap_init(void)
{
ppp_retry = 0; /* We reuse ppp_retry */
pap_state = 0;
}
/*---------------------------------------------------------------------------*/
/* pap_rx() - PAP RX protocol Handler */
/*---------------------------------------------------------------------------*/
void
pap_rx(u8_t *buffer, u16_t count)
{
u8_t *bptr=buffer;
u8_t len;
switch(*bptr++) {
case CONF_REQ:
DEBUG1(("CONF ACK - only for server, no support\n"));
break;
case CONF_ACK: /* config Ack */
DEBUG1(("CONF ACK - PAP good - "));
/* Display message if debug */
len = *bptr++;
*(bptr + len) = 0;
DEBUG1((" %s \n",bptr));
pap_state |= PAP_TX_UP;
/* expire the timer to make things happen after a state change */
TIMER_expire();
break;
case CONF_NAK:
DEBUG1(("CONF NAK - Failed Auth - "));
pap_state |= PAP_TX_AUTH_FAIL;
/* display message if debug */
len = *bptr++;
*(bptr + len)=0;
DEBUG1((" %s \n",bptr));
break;
}
}
/*---------------------------------------------------------------------------*/
/* pap_task() - This task needs to be called every so often during the PAP
* negotiation phase. This task sends PAP REQ packets.
*/
/*---------------------------------------------------------------------------*/
void
pap_task(u8_t *buffer)
{
u8_t *bptr;
u16_t t;
PAPPKT *pkt;
/* If LCP is up and PAP negotiated, try to bring up PAP */
if(!(pap_state & PAP_TX_UP) && !(pap_state & PAP_TX_TIMEOUT)) {
/* Do we need to send a PAP auth packet?
Check if we have a request pending*/
if(1 == TIMER_timeout(PAP_TIMEOUT)) {
/* Check if we have a request pending */
/* t=get_seconds()-pap_tx_time;
if( t > pap_timeout)
{
*/
/* We need to send a PAP authentication request */
DEBUG1(("\nSending PAP Request packet - "));
/* Build a PAP request packet */
pkt = (PAPPKT *)buffer;
/* Configure-Request only here, write id */
pkt->code = CONF_REQ;
pkt->id = ppp_id;
bptr = pkt->data;
/* Write options */
t = strlen(pap_username);
/* Write peer length */
*bptr++ = (u8_t)t;
bptr = memcpy(bptr, pap_username, t);
t = strlen(pap_password);
*bptr++ = (u8_t)t;
bptr = memcpy(bptr, pap_password, t);
/* Write length */
t = bptr - buffer;
/* length here - code and ID + */
pkt->len = htons(t);
DEBUG1((" Len %d\n",t));
/* Send packet */
ahdlc_tx(PAP, buffer, 0, t, 0);
/* Set timer */
TIMER_set();
ppp_retry++;
/* Have we failed? */
if(ppp_retry > 3) {
DEBUG1(("PAP - timout\n"));
pap_state &= PAP_TX_TIMEOUT;
}
}
}
}
/*---------------------------------------------------------------------------*/