/**************************************************************************** * netutils/pppd/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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include "netutils/pppd.h" #include "ppp_conf.h" #include "ppp_arch.h" #include "ppp.h" #include "pap.h" #include "lcp.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #if PPP_DEBUG # define DEBUG1(x) debug_printf x #else # define DEBUG1(x) #endif /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: pap_init ****************************************************************************/ void pap_init(struct ppp_context_s *ctx) { ctx->pap_retry = 0; ctx->pap_state = 0; ctx->pap_prev_seconds = 0; } /**************************************************************************** * pap_rx() - PAP RX protocol Handler * ****************************************************************************/ void pap_rx(struct ppp_context_s *ctx, u8_t *buffer, u16_t count) { u8_t *bptr=buffer; u8_t len; switch (*bptr++) { case CONF_REQ: DEBUG1(("CONF REQ - 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)); ctx->pap_state |= PAP_TX_UP; break; case CONF_NAK: DEBUG1(("CONF NAK - Failed Auth - ")); ctx->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(struct ppp_context_s *ctx, u8_t *buffer) { u8_t *bptr; u16_t t; PAPPKT *pkt; /* If LCP is up and PAP negotiated, try to bring up PAP */ if (!(ctx->pap_state & PAP_TX_UP) && !(ctx->pap_state & PAP_TX_TIMEOUT)) { /* Do we need to send a PAP auth packet? Check if we have a request pending*/ if ((ppp_arch_clock_seconds() - ctx->pap_prev_seconds) > PAP_TIMEOUT) { ctx->pap_prev_seconds = ppp_arch_clock_seconds(); /* 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 = ctx->ppp_id; bptr = pkt->data; /* Write options */ t = strlen((char*)ctx->settings->pap_username); /* Write peer length */ *bptr++ = (u8_t)t; bptr = memcpy(bptr, ctx->settings->pap_username, t); t = strlen((char*)ctx->settings->pap_password); *bptr++ = (u8_t)t; bptr = memcpy(bptr, ctx->settings->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(ctx, PAP, buffer, 0, t, 0); ctx->pap_retry++; /* Have we failed? */ if (ctx->pap_retry > PAP_RETRY_COUNT) { DEBUG1(("PAP - timout\n")); ctx->pap_state &= PAP_TX_TIMEOUT; } } } }