oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 1 | /*www.mycal.net |
| 2 | *--------------------------------------------------------------------------- |
| 3 | *pap.c - PAP processor for the PPP module - - |
| 4 | *--------------------------------------------------------------------------- |
| 5 | *Version - 0.1 Original Version Jun 3, 2000 - - |
| 6 | *--------------------------------------------------------------------------- |
| 7 | *- Copyright (C) 2000, Mycal Labs www.mycal.com - - |
| 8 | *--------------------------------------------------------------------------- |
| 9 | */ |
| 10 | /* |
| 11 | * Copyright (c) 2003, Mike Johnson, Mycal Labs, www.mycal.net |
| 12 | * All rights reserved. |
| 13 | * |
| 14 | * Redistribution and use in source and binary forms, with or without |
| 15 | * modification, are permitted provided that the following conditions |
| 16 | * are met: |
| 17 | * 1. Redistributions of source code must retain the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer. |
| 19 | * 2. Redistributions in binary form must reproduce the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer in the |
| 21 | * documentation and/or other materials provided with the distribution. |
| 22 | * 3. All advertising materials mentioning features or use of this software |
| 23 | * must display the following acknowledgement: |
| 24 | * This product includes software developed by Mike Johnson/Mycal Labs |
| 25 | * www.mycal.net. |
| 26 | * 4. The name of the author may not be used to endorse or promote |
| 27 | * products derived from this software without specific prior |
| 28 | * written permission. |
| 29 | * |
| 30 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 31 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 32 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 33 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 34 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 35 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| 36 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 37 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 38 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 39 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 40 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 41 | * |
| 42 | * This file is part of the Mycal Modified uIP TCP/IP stack. |
| 43 | * |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 44 | * $Id: pap.c,v 1.2 2004/08/22 21:10:02 oliverschmidt Exp $ |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 45 | * |
| 46 | */ |
| 47 | |
| 48 | /* */ |
| 49 | /* include files */ |
| 50 | /* */ |
| 51 | |
| 52 | #include <string.h> |
| 53 | #include "ppp.h" |
| 54 | #include "pap.h" |
| 55 | #include "lcp.h" |
| 56 | |
| 57 | #define DEBUG1(x) printf x |
| 58 | |
| 59 | /*#include "time.h"*/ |
| 60 | /*#include "utils.h" */ |
| 61 | #define TIMER_expire() |
| 62 | #define TIMER_set() |
| 63 | #define TIMER_timeout(x) 1 |
| 64 | |
| 65 | |
| 66 | u8_t pap_state; |
| 67 | |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 68 | u8_t pap_username[PAP_USERNAME_SIZE]; |
| 69 | u8_t pap_password[PAP_PASSWORD_SIZE]; |
| 70 | |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 71 | /*u16_t pap_tx_time; |
| 72 | u8_t pap_timeout;*/ |
| 73 | |
| 74 | /*---------------------------------------------------------------------------*/ |
| 75 | void |
| 76 | pap_init(void) |
| 77 | { |
| 78 | ppp_retry = 0; /* We reuse ppp_retry */ |
| 79 | pap_state = 0; |
| 80 | } |
| 81 | /*---------------------------------------------------------------------------*/ |
| 82 | /* pap_rx() - PAP RX protocol Handler */ |
| 83 | /*---------------------------------------------------------------------------*/ |
| 84 | void |
| 85 | pap_rx(u8_t *buffer, u16_t count) |
| 86 | { |
| 87 | u8_t *bptr=buffer; |
| 88 | u8_t len; |
| 89 | |
| 90 | switch(*bptr++) { |
| 91 | case CONF_REQ: |
| 92 | DEBUG1(("CONF ACK - only for server, no support\n")); |
| 93 | break; |
| 94 | case CONF_ACK: /* config Ack */ |
| 95 | DEBUG1(("CONF ACK - PAP good - ")); |
| 96 | /* Display message if debug */ |
| 97 | len = *bptr++; |
| 98 | *(bptr + len) = 0; |
| 99 | DEBUG1((" %s \n",bptr)); |
| 100 | pap_state |= PAP_TX_UP; |
| 101 | /* expire the timer to make things happen after a state change */ |
| 102 | TIMER_expire(); |
| 103 | break; |
| 104 | case CONF_NAK: |
| 105 | DEBUG1(("CONF NAK - Failed Auth - ")); |
| 106 | pap_state |= PAP_TX_AUTH_FAIL; |
| 107 | /* display message if debug */ |
| 108 | len = *bptr++; |
| 109 | *(bptr + len)=0; |
| 110 | DEBUG1((" %s \n",bptr)); |
| 111 | break; |
| 112 | } |
| 113 | } |
| 114 | /*---------------------------------------------------------------------------*/ |
| 115 | /* pap_task() - This task needs to be called every so often during the PAP |
| 116 | * negotiation phase. This task sends PAP REQ packets. |
| 117 | */ |
| 118 | /*---------------------------------------------------------------------------*/ |
| 119 | void |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 120 | pap_task(u8_t *buffer) |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 121 | { |
| 122 | u8_t *bptr; |
| 123 | u16_t t; |
| 124 | PAPPKT *pkt; |
| 125 | |
| 126 | /* If LCP is up and PAP negotiated, try to bring up PAP */ |
| 127 | if(!(pap_state & PAP_TX_UP) && !(pap_state & PAP_TX_TIMEOUT)) { |
| 128 | /* Do we need to send a PAP auth packet? |
| 129 | Check if we have a request pending*/ |
| 130 | if(1 == TIMER_timeout(PAP_TIMEOUT)) { |
| 131 | /* Check if we have a request pending */ |
| 132 | /* t=get_seconds()-pap_tx_time; |
| 133 | if( t > pap_timeout) |
| 134 | { |
| 135 | */ |
| 136 | /* We need to send a PAP authentication request */ |
| 137 | DEBUG1(("\nSending PAP Request packet - ")); |
| 138 | |
| 139 | /* Build a PAP request packet */ |
| 140 | pkt = (PAPPKT *)buffer; |
| 141 | |
| 142 | /* Configure-Request only here, write id */ |
| 143 | pkt->code = CONF_REQ; |
| 144 | pkt->id = ppp_id; |
| 145 | bptr = pkt->data; |
| 146 | |
| 147 | /* Write options */ |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 148 | t = strlen(pap_username); |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 149 | /* Write peer length */ |
| 150 | *bptr++ = (u8_t)t; |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 151 | bptr = memcpy(bptr, pap_username, t); |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 152 | |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 153 | t = strlen(pap_password); |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 154 | *bptr++ = (u8_t)t; |
oliverschmidt | a0f331a | 2004-08-22 21:10:02 +0000 | [diff] [blame^] | 155 | bptr = memcpy(bptr, pap_password, t); |
oliverschmidt | 3396e9a | 2004-08-20 12:29:54 +0000 | [diff] [blame] | 156 | |
| 157 | /* Write length */ |
| 158 | t = bptr - buffer; |
| 159 | /* length here - code and ID + */ |
| 160 | pkt->len = htons(t); |
| 161 | |
| 162 | DEBUG1((" Len %d\n",t)); |
| 163 | |
| 164 | /* Send packet */ |
| 165 | ahdlc_tx(PAP, buffer, 0, t, 0); |
| 166 | |
| 167 | /* Set timer */ |
| 168 | TIMER_set(); |
| 169 | |
| 170 | ppp_retry++; |
| 171 | |
| 172 | /* Have we failed? */ |
| 173 | if(ppp_retry > 3) { |
| 174 | DEBUG1(("PAP - timout\n")); |
| 175 | pap_state &= PAP_TX_TIMEOUT; |
| 176 | |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | /*---------------------------------------------------------------------------*/ |