BSD 4_1c_2 release

[unix-history] / usr / src / ucb / netser / implog / implog.c

#ifndef lint
static char sccsid[] = "@(#)implog.c    4.3 (Berkeley) 11/14/82";
#endif

#include <stdio.h>
#include <time.h>
#include <signal.h>
#include <sgtty.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>

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

#define min(a, b)       ((a) < (b) ? (a) : (b))

u_char  buf[1024];
int     showdata = 1;
int     showcontents = 0;
int     follow = 0;
int     link = -1;
int     host = -1;
int     imp = -1;
int     packettype = -1;
extern  int errno;
int     log;
char    *logfile = "/usr/adm/implog";

/*
* 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)
       char *argv[];
{
       struct stat b;
       int size;
       char *cp;

       argc--, argv++;
       while (argc > 0 && argv[0][0] == '-') {
               if (strcmp(*argv, "-D") == 0) {
                       showdata = 0;
                       argv++, argc--;
                       continue;
               }
               if (strcmp(*argv, "-f") == 0) {
                       follow++;
                       argv++, argc--;
                       continue;
               }
               if (strcmp(*argv, "-c") == 0) {
                       showcontents++;
                       argv++, argc--;
                       continue;
               }
               if (strcmp(*argv, "-l") == 0) {
                       argc--, argv++;
                       if (argc > 0) {
                               link = atoi(*argv);
                               argc--, argv++;
                       } else
                               link = IMPLINK_IP;
                       continue;
               }
               if (strcmp(*argv, "-h") == 0) {
                       argc--, argv++;
                       if (argc < 1) {
                               printf("-h: missing host #\n");
                               exit(2);
                       }
                       host = atoi(*argv);
                       argv++, argc--;
                       continue;
               }
               if (strcmp(*argv, "-i") == 0) {
                       argc--, argv++;
                       if (argc < 1) {
                               printf("-i: missing imp #\n");
                               exit(2);
                       }
                       imp = atoi(*argv);
                       argv++, argc--;
                       continue;
               }
               if (strcmp(*argv, "-t") == 0) {
                       argc--, argv++;;
                       if (argc < 1) {
                               printf("-t: missing packet type\n");
                               exit(2);
                       }
                       packettype = atoi(*argv);
                       argv++, argc--;;
                       continue;
               }
               printf("usage: implog [ -D ] [ -c ] [ -f ] [-h #] [-i #] [ -t # ] [-l [#]] [logfile]\n");
               exit(2);
       }
       if (argc > 0)
               logfile = argv[0];
       log = open(logfile, 0);
       if (log < 0) {
               perror(logfile);
               exit(1);
       }
       fstat(log, &b);
       size = b.st_size;
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 && from.sin_addr.s_host != host) {
                       lseek(log, from.sin_cc, 1);
                       continue;
               }
               if (imp >= 0) {
                       from.sin_addr.s_imp = ntohs(from.sin_addr.s_imp);
                       if (from.sin_addr.s_imp != imp) {
                               lseek(log, from.sin_cc, 1);
                               continue;
                       }
               }
               process(log, &from);
       }
       while (follow) {
               fflush(stdout);
               sleep(5);
               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;

       if (read(l, (char *)buf, f->sin_cc) != f->sin_cc) {
               perror("read");
               return;
       }
       ip = (struct imp_leader *)buf;
       ip->il_imp = ntohs((u_short)ip->il_imp);
       for (mp = mtypes; mp->m_type != -1; mp++)
               if (mp->m_type == ip->il_mtype)
                       break;
       if (mp->m_type == IMPTYPE_DATA) {
               if (link >= 0 && ip->il_link != link)
                       return;
               if (!showdata)
                       return;
       }
       if (packettype >= 0 && mp->m_type != packettype)
               return;
       printf("%.24s: ", ctime(&f->sin_time));
       (*mp->m_func)(ip, f->sin_cc);
}

impdata(ip, cc)
       register struct imp_leader *ip;
{
       printf("<%d/%d, DATA, link=", ip->il_host, ntohs((u_short)ip->il_imp));
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%d,", ip->il_link);
       printf(" len=%d 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"
};

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

char *down[] = {
       "in 30 secs",
       "for hardware pm",
       "for software reload",
       "for emergency restart"
};

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

       printf("imp going down %s", down[ip->il_link & IMP_DMASK]);
       tdown = ((ip->il_link >> 2) & 0xf) * 5;
       if (ip->il_link & IMP_DMASK)
               printf(" in %d minutes", tdown);
       tbackup = ip->il_subtype * 5;
       printf(": back up ");
       if (tbackup)
               printf("%d minutes\n", tbackup);
       else
               printf("immediately\n");
}

impnoop(ip)
       register struct imp_leader *ip;
{
       printf("noop: host %d, imp %d\n", ip->il_host,
               ntohs((u_short)ip->il_imp));
}

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

imphostdead(ip)
       register struct imp_leader *ip;
{
       printf("host dead: ");
       if (ip->il_link & IMP_DMASK)
               printf("down %s, ", down[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"
};

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

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

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

impreset(ip)
       register struct imp_leader *ip;
{
       printf("reset complete\n");
}

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

impretry(ip)
       register struct imp_leader *ip;
{
       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"
};

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

imptrying(ip)
       register struct imp_leader *ip;
{
       printf("refused, still trying\n");
}

impready(ip)
       register struct imp_leader *ip;
{
       printf("ready\n");
}

impundef(ip)
       register struct imp_leader *ip;
{
       printf("<fmt=%x, net=%x, flags=%x, mtype=", ip->il_format,
               ip->il_network, ip->il_flags);
       printf("%x, htype=%x, host=%x, imp=%x, link=", ip->il_mtype,
               ip->il_htype, ip->il_host, ip->il_imp);
       if (ip->il_link == IMPLINK_IP)
               printf("ip,");
       else
               printf("%x,", ip->il_link);
       printf(" subtype=%x>\n", ip->il_subtype);
}