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📄 Makefile(1.66 KB)
📄 Makefile.depend(435 B)
📄 README.changes(7.26 KB)
📄 README.nat(14.85 KB)
📄 acf.c(3.51 KB)
📄 acf.h(1.5 KB)
📄 arp.c(8.24 KB)
📄 arp.h(1.76 KB)
📄 async.c(5.39 KB)
📄 async.h(1.9 KB)
📄 auth.c(12.02 KB)
📄 auth.h(2.69 KB)
📄 bundle.c(56.37 KB)
📄 bundle.h(7.7 KB)
📄 cbcp.c(22.53 KB)
📄 cbcp.h(2.51 KB)
📄 ccp.c(23.33 KB)
📄 ccp.h(5.53 KB)
📄 chap.c(27 KB)
📄 chap.h(2.69 KB)
📄 chap_ms.c(12.22 KB)
📄 chap_ms.h(2.48 KB)
📄 chat.c(20.41 KB)
📄 chat.h(2.92 KB)
📄 command.c(101.76 KB)
📄 command.h(3.02 KB)
📄 datalink.c(42.89 KB)
📄 datalink.h(6.11 KB)
📄 deflate.c(15.89 KB)
📄 deflate.h(1.52 KB)
📄 defs.c(8.61 KB)
📄 defs.h(5.41 KB)
📄 descriptor.h(2.24 KB)
📄 ether.c(20.81 KB)
📄 ether.h(1.73 KB)
📄 exec.c(11.47 KB)
📄 exec.h(1.67 KB)
📄 filter.c(15.76 KB)
📄 filter.h(3.8 KB)
📄 fsm.c(31.01 KB)
📄 fsm.h(7.02 KB)
📄 hdlc.c(15.17 KB)
📄 hdlc.h(3.9 KB)
📄 i4b.h(1.73 KB)
📄 id.c(6.05 KB)
📄 id.h(3.01 KB)
📄 iface.c(22.41 KB)
📄 iface.h(2.97 KB)
📄 ip.c(30.21 KB)
📄 ip.h(2.09 KB)
📄 ipcp.c(42.99 KB)
📄 ipcp.h(5.14 KB)
📄 iplist.c(5.54 KB)
📄 iplist.h(1.99 KB)
📄 ipv6cp.c(21.9 KB)
📄 ipv6cp.h(3.26 KB)
📄 layer.h(1.97 KB)
📄 lcp.c(39.22 KB)
📄 lcp.h(6.3 KB)
📄 link.c(10.36 KB)
📄 link.h(3.42 KB)
📄 log.c(11.33 KB)
📄 log.h(4.14 KB)
📄 lqr.c(17.5 KB)
📄 lqr.h(3.31 KB)
📄 main.c(17.93 KB)
📄 main.h(1.6 KB)
📄 mbuf.c(10.02 KB)
📄 mbuf.h(4 KB)
📄 mp.c(33.66 KB)
📄 mp.h(4.87 KB)
📄 mppe.c(20.27 KB)
📄 mppe.h(1.57 KB)
📄 nat_cmd.c(15.37 KB)
📄 nat_cmd.h(1.88 KB)
📄 ncp.c(13.17 KB)
📄 ncp.h(4.36 KB)
📄 ncpaddr.c(23.06 KB)
📄 ncpaddr.h(4.63 KB)
📄 netgraph.c(20.65 KB)
📄 netgraph.h(1.72 KB)
📄 pap.c(8.83 KB)
📄 pap.h(1.78 KB)
📄 physical.c(29.01 KB)
📄 physical.h(6.5 KB)
📄 ppp.8(149.48 KB)
📄 ppp.conf(1.23 KB)
📄 pred.c(8.83 KB)
📄 pred.h(1.59 KB)
📄 probe.c(2.29 KB)
📄 probe.h(1.57 KB)
📄 prompt.c(12.92 KB)
📄 prompt.h(3.87 KB)
📄 proto.c(3.22 KB)
📄 proto.h(2.4 KB)
📄 radius.c(39.38 KB)
📄 radius.h(4.6 KB)
📄 route.c(25.91 KB)
📄 route.h(3.3 KB)
📄 server.c(10.9 KB)
📄 server.h(2.26 KB)
📄 sig.c(3.45 KB)
📄 sig.h(1.6 KB)
📄 slcompress.c(17.2 KB)
📄 slcompress.h(6.48 KB)
📄 sync.c(2.7 KB)
📄 sync.h(1.44 KB)
📄 systems.c(11.45 KB)
📄 systems.h(2.02 KB)
📄 tcp.c(5.63 KB)
📄 tcp.h(1.66 KB)
📄 tcpmss.c(5.06 KB)
📄 tcpmss.h(1.44 KB)
📄 throughput.c(8.84 KB)
📄 throughput.h(2.91 KB)
📄 timer.c(8.14 KB)
📄 timer.h(2.31 KB)
📄 tty.c(20.63 KB)
📄 tty.h(1.73 KB)
📄 tun.c(3.27 KB)
📄 tun.h(1.58 KB)
📄 ua.h(2.98 KB)
📄 udp.c(8.7 KB)
📄 udp.h(1.67 KB)
📄 vjcomp.c(5.68 KB)
📄 vjcomp.h(1.53 KB)

Editing: fsm.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
 *          based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
 *                           Internet Initiative Japan, Inc (IIJ)
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 *
 * $FreeBSD$
 */

/*
 *  State of machine
 */
#define	ST_INITIAL	0
#define	ST_STARTING	1
#define	ST_CLOSED	2
#define	ST_STOPPED	3
#define	ST_CLOSING	4
#define	ST_STOPPING	5
#define	ST_REQSENT	6
#define	ST_ACKRCVD	7
#define	ST_ACKSENT	8
#define	ST_OPENED	9

#define	ST_MAX		10
#define	ST_UNDEF	-1

#define	MODE_REQ	0
#define	MODE_NAK	1
#define	MODE_REJ	2
#define	MODE_NOP	3
#define	MODE_ACK	4	/* pseudo mode for ccp negotiations */

#define	OPEN_PASSIVE	-1

#define FSM_REQ_TIMER	1
#define FSM_TRM_TIMER	2

#define FSM_OPTLEN	100

struct fsm;

struct fsm_retry {
  u_int timeout;                             /* FSM retry frequency */
  u_int maxreq;                              /* Max Config REQ retries */
  u_int maxtrm;                              /* Max Term REQ retries */
};

struct fsm_decode {
  u_char ack[FSM_OPTLEN], *ackend;
  u_char nak[FSM_OPTLEN], *nakend;
  u_char rej[FSM_OPTLEN], *rejend;
};

struct fsm_callbacks {
  int (*LayerUp)(struct fsm *);                 /* Layer is now up (tlu) */
  void (*LayerDown)(struct fsm *);              /* About to come down (tld) */
  void (*LayerStart)(struct fsm *);             /* Layer about to start (tls) */
  void (*LayerFinish)(struct fsm *);            /* Layer now down (tlf) */
  void (*InitRestartCounter)(struct fsm *, int);/* Set fsm timer load */
  void (*SendConfigReq)(struct fsm *);          /* Send REQ please */
  void (*SentTerminateReq)(struct fsm *);       /* Term REQ just sent */
  void (*SendTerminateAck)(struct fsm *, u_char); /* Send Term ACK please */
  void (*DecodeConfig)(struct fsm *, u_char *, u_char *, int,
                       struct fsm_decode *);    /* Deal with incoming data */
  int (*RecvResetReq)(struct fsm *fp);          /* Reset output */
  void (*RecvResetAck)(struct fsm *fp, u_char); /* Reset input */
};

struct fsm_parent {
  void (*LayerStart) (void *, struct fsm *);         /* tls */
  void (*LayerUp) (void *, struct fsm *);            /* tlu */
  void (*LayerDown) (void *, struct fsm *);          /* tld */
  void (*LayerFinish) (void *, struct fsm *);        /* tlf */
  void *object;
};

struct link;
struct bundle;

struct fsm {
  const char *name;		/* Name of protocol */
  u_short proto;		/* Protocol number */
  u_short min_code;
  u_short max_code;
  int open_mode;		/* Delay before config REQ (-1 forever) */
  unsigned state;		/* State of the machine */
  u_char reqid;			/* Next request id */
  int restart;			/* Restart counter value */

struct {
    int reqs;			/* Max config REQs before a close() */
    int naks;			/* Max config NAKs before a close() */
    int rejs;			/* Max config REJs before a close() */
  } more;

struct pppTimer FsmTimer;	/* Restart Timer */
  struct pppTimer OpenTimer;	/* Delay before opening */

/*
   * This timer times the ST_STOPPED state out after the given value
   * (specified via "set stopped ...").  Although this isn't specified in the
   * rfc, the rfc *does* say that "the application may use higher level
   * timers to avoid deadlock". The StoppedTimer takes effect when the other
   * side ABENDs rather than going into ST_ACKSENT (and sending the ACK),
   * causing ppp to time out and drop into ST_STOPPED.  At this point,
   * nothing will change this state :-(
   */
  struct pppTimer StoppedTimer;
  int LogLevel;

/* The link layer active with this FSM (may be our bundle below) */
  struct link *link;

/* Our high-level link */
  struct bundle *bundle;

const struct fsm_parent *parent;
  const struct fsm_callbacks *fn;
};

struct fsmheader {
  u_char code;			/* Request code */
  u_char id;			/* Identification */
  u_short length;		/* Length of packet */
};

#define	CODE_CONFIGREQ	1
#define	CODE_CONFIGACK	2
#define	CODE_CONFIGNAK	3
#define	CODE_CONFIGREJ	4
#define	CODE_TERMREQ	5
#define	CODE_TERMACK	6
#define	CODE_CODEREJ	7
#define	CODE_PROTOREJ	8
#define	CODE_ECHOREQ	9	/* Used in LCP */
#define	CODE_ECHOREP	10	/* Used in LCP */
#define	CODE_DISCREQ	11
#define	CODE_IDENT	12	/* Used in LCP Extension */
#define	CODE_TIMEREM	13	/* Used in LCP Extension */
#define	CODE_RESETREQ	14	/* Used in CCP */
#define	CODE_RESETACK	15	/* Used in CCP */

struct fsm_opt_hdr {
  u_char id;
  u_char len;
} __packed;

#define MAX_FSM_OPT_LEN 52
struct fsm_opt {
  struct fsm_opt_hdr hdr;
  u_char data[MAX_FSM_OPT_LEN-2];
};

#define INC_FSM_OPT(ty, length, o)                      \
  do {                                                  \
    (o)->hdr.id = (ty);                                 \
    (o)->hdr.len = (length);                            \
    (o) = (struct fsm_opt *)((u_char *)(o) + (length)); \
  } while (0)

extern void fsm_Init(struct fsm *, const char *, u_short, int, int, int,
                     struct bundle *, struct link *, const  struct fsm_parent *,
                     struct fsm_callbacks *, const char * const [3]);
extern void fsm_Output(struct fsm *, u_int, u_int, u_char *, unsigned, int);
extern void fsm_Open(struct fsm *);
extern void fsm_Up(struct fsm *);
extern void fsm_Down(struct fsm *);
extern void fsm_Input(struct fsm *, struct mbuf *);
extern void fsm_Close(struct fsm *);
extern int fsm_NullRecvResetReq(struct fsm *);
extern void fsm_NullRecvResetAck(struct fsm *, u_char);
extern void fsm_Reopen(struct fsm *);
extern void fsm2initial(struct fsm *);
extern const char *State2Nam(u_int);
extern struct fsm_opt *fsm_readopt(u_char **);
extern void fsm_rej(struct fsm_decode *, const struct fsm_opt *);
extern void fsm_ack(struct fsm_decode *, const struct fsm_opt *);
extern void fsm_nak(struct fsm_decode *, const struct fsm_opt *);
extern void fsm_opt_normalise(struct fsm_decode *);

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Editing: fsm.h

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