BSD 4_4 release

[unix-history] / usr / src / old / implog / implog.c

/*
* Copyright (c) 1983, 1988 Regents of the University of California.
* 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 the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)implog.c    5.14 (Berkeley) 4/1/91";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/signal.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/socket.h>

#include <net/if.h>

#include <netinet/in.h>
#define IMPMESSAGES
#define IMPLEADERS
#include <netimp/if_imp.h>

#include <sgtty.h>
#include <stdio.h>
#include "pathnames.h"

u_char  buf[1024];
int     showdata = 1;
int     showcontents = 0;
int     rawheader = 0;
int     follow = 0;
int     skip = 0;
int     linkn = -1;
int     host = -1;
int     imp = -1;
int     packettype = -1;
extern  int errno;
int     log;

/*
* Socket address, internet style, with
* unused space taken by timestamp and packet
* size.
*/
struct sockstamp {
       short   sin_family;
       u_short sin_port;
       struct  in_addr sin_addr;
       time_t  sin_time;
       int     sin_cc;
};
struct  sockstamp from;

main(argc, argv)
       int argc;
       char **argv;
{
       extern int errno, optind;
       extern char *optarg;
       struct stat b;
       off_t size, lseek();
       char *logfile, *strerror();
       int ch;
       long hostfrom, impfrom;

       while ((ch = getopt(argc, argv, "DFLcfh:i:l:rt:")) != EOF)
               switch(ch) {
               case 'D':
                       showdata = 0;
                       break;
               case 'F':
                       skip++;
                       /* FALLTHROUGH */
               case 'f':
                       follow++;
                       break;
               case 'L':
                       linkn = IMPLINK_IP;
                       break;
               case 'c':
                       showcontents++;
                       break;
               case 'h':
                       host = atoi(optarg);
                       break;
               case 'i':
                       imp = atoi(optarg);
                       break;
               case 'l':
                       linkn = atoi(optarg);
                       break;
               case 'r':
                       rawheader++;
                       break;
               case 't':
                       packettype = atoi(optarg);
                       break;
               case '?':
               default:
                       fprintf(stderr,
"usage: implog [-DFLcfr] [-h host] [-i imp] [-l link] [-t type] [logfile]\n");
                       exit(2);
               }
       argc -= optind;
       argv += optind;

       logfile = argc ? *argv : _PATH_IMPLOG;
       log = open(logfile, O_RDONLY, 0);
       if (log < 0 || fstat(log, &b)) {
               fprintf(stderr, "implog: %s: %s\n", logfile, strerror(errno));
               exit(1);
       }
       size = b.st_size;
       if (skip)
               (void)lseek(log, size, L_SET);
again:
       while (read(log, (char *)&from, sizeof(from)) == sizeof(from)) {
               if (from.sin_family == 0) {
                       printf("restarted: %.24s\n", ctime(&from.sin_time));
                       continue;
               }
               if (host >= 0 || imp >= 0) {
                       long addr = ntohl(from.sin_addr.s_addr);

                       if (IN_CLASSA(addr)) {
                               hostfrom = ((addr>>16) & 0xFF);
                               impfrom = addr & 0xFF;
                       } else if (IN_CLASSB(addr)) {
                               hostfrom = ((addr>>8) & 0xFF);
                               impfrom = addr & 0xFF;
                       } else {
                               hostfrom = ((addr>>4) & 0xF);
                               impfrom = addr & 0xF;
                       }
               }
               if (host >= 0 && hostfrom != host) {
                       (void)lseek(log, (long)from.sin_cc, L_INCR);
                       continue;
               }
               if (imp >= 0 && impfrom != imp) {
                       (void)lseek(log, (long)from.sin_cc, L_INCR);
                       continue;
               }
               process(log, &from);
       }
       while (follow) {
               (void)fflush(stdout);
               (void)sleep(5);
               (void)fstat(log, &b);
               if (b.st_size > size) {
                       size = b.st_size;
                       goto again;
               }
       }
}

int     impdata(), impbadleader(), impdown(), impnoop();
int     imprfnm(), impincomplete(), imphostdead(), imphostunreach();
int     impbaddata(), impreset(), impretry(), impnotify(), imptrying();
int     impready(), impundef();

struct  messages {
       u_char  m_type;         /* type of message */
       int     (*m_func)();    /* routine to process message */
} mtypes[] = {
       { IMPTYPE_DATA,         impdata },
       { IMPTYPE_BADLEADER,    impbadleader },
       { IMPTYPE_DOWN,         impdown },
       { IMPTYPE_NOOP,         impnoop },
       { IMPTYPE_RFNM,         imprfnm },
       { IMPTYPE_INCOMPLETE,   impincomplete },
       { IMPTYPE_HOSTDEAD,     imphostdead },
       { IMPTYPE_HOSTUNREACH,  imphostunreach },
       { IMPTYPE_BADDATA,      impbaddata },
       { IMPTYPE_RESET,        impreset },
       { IMPTYPE_RETRY,        impretry },
       { IMPTYPE_NOTIFY,       impnotify },
       { IMPTYPE_TRYING,       imptrying },
       { IMPTYPE_READY,        impready },
       { -1,                   impundef }
};

/*
* Print a packet.
*/
process(l, f)
       int l;
       struct sockstamp *f;
{
       register struct messages *mp;
       struct imp_leader *ip;
       int (*fn)();

       if (read(l, (char *)buf, f->sin_cc) != f->sin_cc) {
               perror("implog: read");
               return;
       }
       ip = (struct imp_leader *)buf;
       ip->il_imp = ntohs(ip->il_imp);
       if (ip->il_format != IMP_NFF)
               fn = impundef;
       else {
               for (mp = mtypes; mp->m_type != (u_char)-1; mp++)
                       if (mp->m_type == ip->il_mtype)
                               break;
               fn = mp->m_func;
       }
       if (ip->il_mtype == IMPTYPE_DATA) {
               if (linkn >= 0 && ip->il_link != linkn)
                       return;
               if (!showdata)
                       return;
       }
       if (packettype >= 0 && ip->il_mtype != packettype)
               return;
       printf("%.24s: ", ctime(&f->sin_time));
       if (f->sin_cc < sizeof(struct control_leader))
               printf("(truncated header, %d bytes): ", f->sin_cc);
       (*fn)(ip, f->sin_cc);
       if (rawheader && fn != impundef) {
               putchar('\t');
               impundef(ip, f->sin_cc);
       }
}

impdata(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("<DATA, source=%d/%u, link=", ip->il_host, (u_short)ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%d,", ip->il_link);
       printf(" len=%u bytes>\n", ntohs((u_short)ip->il_length) >> 3);
       if (showcontents) {
               register u_char *cp = ((u_char *)ip) + sizeof(*ip);
               register int i;

               i = (ntohs(ip->il_length) >> 3) - sizeof(struct imp_leader);
               cc = MIN(i, cc);
               printf("data: (%d bytes)", cc);
               for (i = 0; i < cc; i++, cp++) {
                       if (i % 25 == 0)
                               printf("\n");
                       printf("%02x ", *cp);
               }
               putchar('\n');
       }
}

char *badleader[] = {
       "error flip-flop set",
       "message < 80 bits",
       "illegal type field",
       "opposite leader type"
};

/* ARGSUSED */
impbadleader(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("bad leader: ");
       if (ip->il_subtype > IMPLEADER_OPPOSITE)
               printf("%x\n", ip->il_subtype);
       else
               printf("%s\n", badleader[ip->il_subtype]);
}

/* ARGSUSED */
impdown(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       int tdown, tbackup;

       printf("imp going down %s", impmessage[ip->il_link & IMP_DMASK]);
       tdown = ((ip->il_link >> IMPDOWN_WHENSHIFT) & IMPDOWN_WHENMASK) *
           IMPDOWN_WHENUNIT;
       if ((ip->il_link & IMP_DMASK) != IMPDOWN_GOING)
               printf(" in %d minutes", tdown);
       tbackup = ip->il_subtype * IMPDOWN_WHENUNIT;
       printf(": back up ");
       if (tbackup)
               printf("%d minutes\n", tbackup);
       else
               printf("immediately\n");
}

/* ARGSUSED */
impnoop(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("noop: host %d, imp %u\n", ip->il_host, ip->il_imp);
}

/* ARGSUSED */
imprfnm(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("rfnm: htype=%x, source=%d/%u, link=",
               ip->il_htype, ip->il_host, ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%d,", ip->il_link);
       printf(" subtype=%x\n", ip->il_subtype);
}

char *hostdead[] = {
       "#0",
       "ready-line negated",
       "tardy receiving messages",
       "ncc doesn't know host",
       "imp software won't allow messages",
       "host down for scheduled pm",
       "host down for hardware work",
       "host down for software work",
       "host down for emergency restart",
       "host down because of power outage",
       "host stopped at a breakpoint",
       "host down due to hardware failure",
       "host not scheduled to be up",
       "#13",
       "#14",
       "host in the process of coming up"
};

/* ARGSUSED */
imphostdead(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("host %u/%u dead: ", ip->il_host, ip->il_imp);
       if (ip->il_link & IMP_DMASK)
               printf("down %s, ", impmessage[ip->il_link & IMP_DMASK]);
       if (ip->il_subtype <= IMPHOST_COMINGUP)
               printf("%s\n", hostdead[ip->il_subtype]);
       else
               printf("subtype=%x\n", ip->il_subtype);
}

char *hostunreach[] = {
       "destination imp can't be reached",
       "destination host isn't up",
       "host doesn't support long leader",
       "communication is prohibited"
};

/* ARGSUSED */
imphostunreach(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("host %u/%u unreachable: ", ip->il_host, ip->il_imp);
       if (ip->il_subtype <= IMPREACH_PROHIBITED)
               printf("%s\n", hostunreach[ip->il_subtype]);
       else
               printf("subtype=%x\n", ip->il_subtype);
}

/* ARGSUSED */
impbaddata(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("error in data: htype=%x, source=%u/%u, link=",
               ip->il_htype, ip->il_host, ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip, ");
       else
               printf("%d, ", ip->il_link);
       printf("subtype=%x\n", ip->il_subtype);
}

char *incomplete[] = {
       "host didn't take data fast enough",
       "message was too long",
       "message transmission time > 15 seconds",
       "imp/circuit failure",
       "no resources within 15 seconds",
       "source imp i/o failure during receipt"
};

/* ARGSUSED */
impincomplete(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("incomplete: htype=%x, source=%u/%u, link=",
               ip->il_htype, ip->il_host, ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%d,", ip->il_link);
       if (ip->il_subtype <= IMPCOMPLETE_IMPIO)
               printf(" %s\n", incomplete[ip->il_subtype]);
       else
               printf(" subtype=%x\n", ip->il_subtype);
}

/* ARGSUSED */
impreset(ip, cc)
       struct imp_leader *ip;
       int cc;
{
       printf("reset complete\n");
}

char *retry[] = {
       "imp buffer wasn't available",
       "connection block unavailable"
};

/* ARGSUSED */
impretry(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("refused, try again: ");
       if (ip->il_subtype <= IMPRETRY_BLOCK)
               printf("%s\n", retry[ip->il_subtype]);
       else
               printf("subtype=%x\n", ip->il_subtype);
}

char *notify[] = {
       "#0",
       "#1",
       "connection not available",
       "reassembly space not available at destination",
       "message number not available",
       "transaction block for message not available"
};

/* ARGSUSED */
impnotify(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("refused, will notify: ");
       if (ip->il_subtype <= 5)
               printf("%s\n", notify[ip->il_subtype]);
       else
               printf("subtype=%x\n", ip->il_subtype);
}

/* ARGSUSED */
imptrying(ip, cc)
       struct imp_leader *ip;
       int cc;
{
       printf("refused, still trying\n");
}

/* ARGSUSED */
impready(ip, cc)
       struct imp_leader *ip;
       int cc;
{
       printf("ready\n");
}

/* ARGSUSED */
impundef(ip, cc)
       register struct imp_leader *ip;
       int cc;
{
       printf("<fmt=%x, net=%x, flags=%x, mtype=", ip->il_format,
               ip->il_network, ip->il_flags);
       printf("%x, htype=%x,\n\t host=%d(x%x), imp=%u(x%x), link=",
               ip->il_mtype, ip->il_htype, ip->il_host, ip->il_host,
               ip->il_imp, ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%d (x%x),", ip->il_link, ip->il_link);
       printf(" subtype=%x", ip->il_subtype);
       if (cc >= sizeof(struct imp_leader) && ip->il_length)
               printf(" len=%u bytes", ntohs((u_short)ip->il_length) >> 3);
       printf(">\n");
}