/*
* lcp.c - PPP Link Control Protocol.
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#define RCSID "$Id: lcp.c,v 1.63 2002/11/02 19:48:12 carlsonj Exp $"
+#define RCSID "$Id: lcp.c,v 1.76 2006/05/22 00:04:07 paulus Exp $"
/*
* TODO:
#include "pppd.h"
#include "fsm.h"
#include "lcp.h"
-#include "chap.h"
+#include "chap-new.h"
#include "magic.h"
static const char rcsid[] = RCSID;
static int lcp_cilen __P((fsm *)); /* Return length of our CI */
static void lcp_addci __P((fsm *, u_char *, int *)); /* Add our CI to pkt */
static int lcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */
-static int lcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */
+static int lcp_nakci __P((fsm *, u_char *, int, int)); /* Peer nak'd our CI */
static int lcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */
static int lcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv peer CI */
static void lcp_up __P((fsm *)); /* We're UP */
ao->mru = MAXMRU;
ao->neg_asyncmap = 1;
ao->neg_chap = 1;
- ao->chap_mdtype = MDTYPE_ALL;
+ ao->chap_mdtype = chap_mdtype_all;
ao->neg_upap = 1;
ao->neg_eap = 1;
ao->neg_magicnumber = 1;
ao->neg_pcompression = 1;
ao->neg_accompression = 1;
-#ifdef CBCP_SUPPORT
- ao->neg_cbcp = 1;
-#endif
ao->neg_endpoint = 1;
}
{
fsm *f = &lcp_fsm[unit];
- if (phase != PHASE_DEAD)
+ if (phase != PHASE_DEAD && phase != PHASE_MASTER)
new_phase(PHASE_TERMINATE);
if (f->state == STOPPED && f->flags & (OPT_PASSIVE|OPT_SILENT)) {
/*
lcp_finished(f);
} else
- fsm_close(&lcp_fsm[unit], reason);
+ fsm_close(f, reason);
}
* but accept A/C and protocol compressed packets
* if we are going to ask for A/C and protocol compression.
*/
- ppp_send_config(unit, PPP_MRU, 0xffffffff, 0, 0);
- ppp_recv_config(unit, PPP_MRU, (lax_recv? 0: 0xffffffff),
- wo->neg_pcompression, wo->neg_accompression);
+ if (ppp_send_config(unit, PPP_MRU, 0xffffffff, 0, 0) < 0
+ || ppp_recv_config(unit, PPP_MRU, (lax_recv? 0: 0xffffffff),
+ wo->neg_pcompression, wo->neg_accompression) < 0)
+ return;
peer_mru[unit] = PPP_MRU;
if (listen_time != 0) {
fsm_input(f, p, len);
}
-
/*
* lcp_extcode - Handle a LCP-specific code.
*/
break;
case DISCREQ:
+ case IDENTIF:
+ case TIMEREM:
break;
default:
int i;
struct protent *protp;
u_short prot;
+ const char *pname;
if (len < 2) {
LCPDEBUG(("lcp_rprotrej: Rcvd short Protocol-Reject packet!"));
return;
}
+ pname = protocol_name(prot);
+
/*
* Upcall the proper Protocol-Reject routine.
*/
for (i = 0; (protp = protocols[i]) != NULL; ++i)
if (protp->protocol == prot && protp->enabled_flag) {
+ if (pname == NULL)
+ dbglog("Protocol-Reject for 0x%x received", prot);
+ else
+ dbglog("Protocol-Reject for '%s' (0x%x) received", pname,
+ prot);
(*protp->protrej)(f->unit);
return;
}
- warn("Protocol-Reject for unsupported protocol 0x%x", prot);
+ if (pname == NULL)
+ warn("Protocol-Reject for unsupported protocol 0x%x", prot);
+ else
+ warn("Protocol-Reject for unsupported protocol '%s' (0x%x)", pname,
+ prot);
}
* 1 - Nak was good.
*/
static int
-lcp_nakci(f, p, len)
+lcp_nakci(f, p, len, treat_as_reject)
fsm *f;
u_char *p;
int len;
+ int treat_as_reject;
{
lcp_options *go = &lcp_gotoptions[f->unit];
lcp_options *wo = &lcp_wantoptions[f->unit];
try.neg = 0; \
}
+ /*
+ * NOTE! There must be no assignments to individual fields of *go in
+ * the code below. Any such assignment is a BUG!
+ */
/*
* We don't care if they want to send us smaller packets than
* we want. Therefore, accept any MRU less than what we asked for,
try.neg_eap = 0;
/* Try to set up to use their suggestion, if possible */
if (CHAP_CANDIGEST(go->chap_mdtype, cichar))
- go->chap_mdtype = CHAP_MDTYPE_D(cichar);
+ try.chap_mdtype = CHAP_MDTYPE_D(cichar);
} else if (go->neg_chap) {
/*
* We were asking for our preferred algorithm, they must
if (cichar != CHAP_DIGEST(go->chap_mdtype)) {
if (CHAP_CANDIGEST(go->chap_mdtype, cichar)) {
/* Use their suggestion if we support it ... */
- go->chap_mdtype = CHAP_MDTYPE_D(cichar);
+ try.chap_mdtype = CHAP_MDTYPE_D(cichar);
} else {
/* ... otherwise, try our next-preferred algorithm. */
try.chap_mdtype &= ~(CHAP_MDTYPE(try.chap_mdtype));
*/
if (go->neg_mrru) {
NAKCISHORT(CI_MRRU, neg_mrru,
- if (cishort <= wo->mrru)
+ if (treat_as_reject)
+ try.neg_mrru = 0;
+ else if (cishort <= wo->mrru)
try.mrru = cishort;
);
}
* An option we don't recognize represents the peer asking to
* negotiate some option we don't support, so ignore it.
*/
- while (len > CILEN_VOID) {
+ while (len >= CILEN_VOID) {
GETCHAR(citype, p);
GETCHAR(cilen, p);
if (cilen < CILEN_VOID || (len -= cilen) < 0)
if (looped_back) {
if (++try.numloops >= lcp_loopbackfail) {
notice("Serial line is looped back.");
- lcp_close(f->unit, "Loopback detected");
status = EXIT_LOOPBACK;
+ lcp_close(f->unit, "Loopback detected");
}
} else
try.numloops = 0;
}
if (!ao->neg_upap) { /* we don't want to do PAP */
orc = CONFNAK; /* NAK it and suggest CHAP or EAP */
+ PUTCHAR(CI_AUTHTYPE, nakp);
if (ao->neg_eap) {
PUTCHAR(CILEN_SHORT, nakp);
PUTSHORT(PPP_EAP, nakp);
} else {
- PUTCHAR(CI_AUTHTYPE, nakp);
PUTCHAR(CILEN_CHAP, nakp);
PUTSHORT(PPP_CHAP, nakp);
PUTCHAR(CHAP_DIGEST(ao->chap_mdtype), nakp);
if (ao->neg_chap) {
PUTCHAR(CILEN_CHAP, nakp);
PUTSHORT(PPP_CHAP, nakp);
- PUTCHAR(ao->chap_mdtype, nakp);
+ PUTCHAR(CHAP_DIGEST(ao->chap_mdtype), nakp);
} else {
PUTCHAR(CILEN_SHORT, nakp);
PUTSHORT(PPP_PAP, nakp);
static char *lcp_codenames[] = {
"ConfReq", "ConfAck", "ConfNak", "ConfRej",
"TermReq", "TermAck", "CodeRej", "ProtRej",
- "EchoReq", "EchoRep", "DiscReq"
+ "EchoReq", "EchoRep", "DiscReq", "Ident",
+ "TimeRem"
};
static int
printer(arg, "chap");
if (p < optend) {
switch (*p) {
- case CHAP_DIGEST_MD5:
+ case CHAP_MD5:
printer(arg, " MD5");
++p;
break;
if (len >= 4) {
GETLONG(cilong, p);
printer(arg, " magic=0x%x", cilong);
- p += 4;
len -= 4;
}
break;
+
+ case IDENTIF:
+ case TIMEREM:
+ if (len >= 4) {
+ GETLONG(cilong, p);
+ printer(arg, " magic=0x%x", cilong);
+ len -= 4;
+ }
+ if (code == TIMEREM) {
+ if (len < 4)
+ break;
+ GETLONG(cilong, p);
+ printer(arg, " seconds=%u", cilong);
+ len -= 4;
+ }
+ if (len > 0) {
+ printer(arg, " ");
+ print_string((char *)p, len, printer, arg);
+ p += len;
+ len = 0;
+ }
+ break;
}
/* print the rest of the bytes in the packet */
if (f->state == OPENED) {
info("No response to %d echo-requests", lcp_echos_pending);
notice("Serial link appears to be disconnected.");
- lcp_close(f->unit, "Peer not responding");
status = EXIT_PEER_DEAD;
+ lcp_close(f->unit, "Peer not responding");
}
}
projects / ppp.git / blobdiff