/*
* fsm.c - {Link, IP} Control Protocol Finite State Machine.
*
- * 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.
*/
-#ifndef lint
-static char rcsid[] = "$Id: fsm.c,v 1.13 1997/04/30 05:52:17 paulus Exp $";
-#endif
+#define RCSID "$Id: fsm.c,v 1.19 2002/12/04 23:03:32 paulus Exp $"
/*
* TODO:
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
-#include <syslog.h>
#include "pppd.h"
#include "fsm.h"
+static const char rcsid[] = RCSID;
+
static void fsm_timeout __P((void *));
static void fsm_rconfreq __P((fsm *, int, u_char *, int));
static void fsm_rconfack __P((fsm *, int, u_char *, int));
break;
default:
- FSMDEBUG((LOG_INFO, "%s: Up event in state %d!",
- PROTO_NAME(f), f->state));
+ FSMDEBUG(("%s: Up event in state %d!", PROTO_NAME(f), f->state));
}
}
break;
default:
- FSMDEBUG((LOG_INFO, "%s: Down event in state %d!",
- PROTO_NAME(f), f->state));
+ FSMDEBUG(("%s: Down event in state %d!", PROTO_NAME(f), f->state));
}
}
case ACKRCVD:
case ACKSENT:
if (f->retransmits <= 0) {
- syslog(LOG_WARNING, "%s: timeout sending Config-Requests",
- PROTO_NAME(f));
+ warn("%s: timeout sending Config-Requests\n", PROTO_NAME(f));
f->state = STOPPED;
if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished )
(*f->callbacks->finished)(f);
break;
default:
- FSMDEBUG((LOG_INFO, "%s: Timeout event in state %d!",
- PROTO_NAME(f), f->state));
+ FSMDEBUG(("%s: Timeout event in state %d!", PROTO_NAME(f), f->state));
}
}
*/
inp = inpacket;
if (l < HEADERLEN) {
- FSMDEBUG((LOG_WARNING, "fsm_input(%x): Rcvd short header.",
- f->protocol));
+ FSMDEBUG(("fsm_input(%x): Rcvd short header.", f->protocol));
return;
}
GETCHAR(code, inp);
GETCHAR(id, inp);
GETSHORT(len, inp);
if (len < HEADERLEN) {
- FSMDEBUG((LOG_INFO, "fsm_input(%x): Rcvd illegal length.",
- f->protocol));
+ FSMDEBUG(("fsm_input(%x): Rcvd illegal length.", f->protocol));
return;
}
if (len > l) {
- FSMDEBUG((LOG_INFO, "fsm_input(%x): Rcvd short packet.",
- f->protocol));
+ FSMDEBUG(("fsm_input(%x): Rcvd short packet.", f->protocol));
return;
}
len -= HEADERLEN; /* subtract header length */
if( f->state == INITIAL || f->state == STARTING ){
- FSMDEBUG((LOG_INFO, "fsm_input(%x): Rcvd packet in state %d.",
+ FSMDEBUG(("fsm_input(%x): Rcvd packet in state %d.",
f->protocol, f->state));
return;
}
{
int code, reject_if_disagree;
- FSMDEBUG((LOG_INFO, "fsm_rconfreq(%s): Rcvd id %d.", PROTO_NAME(f), id));
switch( f->state ){
case CLOSED:
/* Go away, we're closed */
u_char *inp;
int len;
{
- FSMDEBUG((LOG_INFO, "fsm_rconfack(%s): Rcvd id %d.",
- PROTO_NAME(f), id));
-
if (id != f->reqid || f->seen_ack) /* Expected id? */
return; /* Nope, toss... */
if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len):
(len == 0)) ){
/* Ack is bad - ignore it */
- log_packet(inp, len, "Received bad configure-ack: ", LOG_ERR);
- FSMDEBUG((LOG_INFO, "%s: received bad Ack (length %d)",
- PROTO_NAME(f), len));
+ error("Received bad configure-ack: %P", inp, len);
return;
}
f->seen_ack = 1;
int (*proc) __P((fsm *, u_char *, int));
int ret;
- FSMDEBUG((LOG_INFO, "fsm_rconfnakrej(%s): Rcvd id %d.",
- PROTO_NAME(f), id));
-
if (id != f->reqid || f->seen_ack) /* Expected id? */
return; /* Nope, toss... */
proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci;
if (!proc || !(ret = proc(f, inp, len))) {
/* Nak/reject is bad - ignore it */
- log_packet(inp, len, "Received bad configure-nak/rej: ", LOG_ERR);
- FSMDEBUG((LOG_INFO, "%s: received bad %s (length %d)",
- PROTO_NAME(f), (code==CONFNAK? "Nak": "reject"), len));
+ error("Received bad configure-nak/rej: %P", inp, len);
return;
}
f->seen_ack = 1;
u_char *p;
int len;
{
- char str[80];
-
- FSMDEBUG((LOG_INFO, "fsm_rtermreq(%s): Rcvd id %d.",
- PROTO_NAME(f), id));
-
switch (f->state) {
case ACKRCVD:
case ACKSENT:
case OPENED:
if (len > 0) {
- fmtmsg(str, sizeof(str), "%0.*v", len, p);
- syslog(LOG_INFO, "%s terminated by peer (%s)", PROTO_NAME(f), str);
+ info("%s terminated by peer (%0.*v)", PROTO_NAME(f), len, p);
} else
- syslog(LOG_INFO, "%s terminated by peer", PROTO_NAME(f));
- if (f->callbacks->down)
- (*f->callbacks->down)(f); /* Inform upper layers */
+ info("%s terminated by peer", PROTO_NAME(f));
f->retransmits = 0;
f->state = STOPPING;
+ if (f->callbacks->down)
+ (*f->callbacks->down)(f); /* Inform upper layers */
TIMEOUT(fsm_timeout, f, f->timeouttime);
break;
}
fsm_rtermack(f)
fsm *f;
{
- FSMDEBUG((LOG_INFO, "fsm_rtermack(%s).", PROTO_NAME(f)));
-
switch (f->state) {
case CLOSING:
UNTIMEOUT(fsm_timeout, f);
{
u_char code, id;
- FSMDEBUG((LOG_INFO, "fsm_rcoderej(%s).", PROTO_NAME(f)));
-
if (len < HEADERLEN) {
- FSMDEBUG((LOG_INFO, "fsm_rcoderej: Rcvd short Code-Reject packet!"));
+ FSMDEBUG(("fsm_rcoderej: Rcvd short Code-Reject packet!"));
return;
}
GETCHAR(code, inp);
GETCHAR(id, inp);
- syslog(LOG_WARNING, "%s: Rcvd Code-Reject for code %d, id %d",
- PROTO_NAME(f), code, id);
+ warn("%s: Rcvd Code-Reject for code %d, id %d", PROTO_NAME(f), code, id);
if( f->state == ACKRCVD )
f->state = REQSENT;
break;
default:
- FSMDEBUG((LOG_INFO, "%s: Protocol-reject event in state %d!",
+ FSMDEBUG(("%s: Protocol-reject event in state %d!",
PROTO_NAME(f), f->state));
}
}
/* start the retransmit timer */
--f->retransmits;
TIMEOUT(fsm_timeout, f, f->timeouttime);
-
- FSMDEBUG((LOG_INFO, "%s: sending Configure-Request, id %d",
- PROTO_NAME(f), f->reqid));
}
PUTCHAR(id, outp);
PUTSHORT(outlen, outp);
output(f->unit, outpacket_buf, outlen + PPP_HDRLEN);
-
- FSMDEBUG((LOG_INFO, "fsm_sdata(%s): Sent code %d, id %d.",
- PROTO_NAME(f), code, id));
}