2.11BSD#431 - /usr/src/ucb/netstat/inet.c

   1: /*
   2:  * Copyright (c) 1983,1988 Regents of the University of California.
   3:  * All rights reserved.
   4:  *
   5:  * Redistribution and use in source and binary forms are permitted
   6:  * provided that this notice is preserved and that due credit is given
   7:  * to the University of California at Berkeley. The name of the University
   8:  * may not be used to endorse or promote products derived from this
   9:  * software without specific prior written permission. This software
  10:  * is provided ``as is'' without express or implied warranty.
  11:  */
  12: 
  13: #if defined(DOSCCS) && !defined(lint)
  14: static char sccsid[] = "@(#)inet.c	5.9.3 (2.11BSD GTE) 8/28/94";
  15: #endif
  16: 
  17: #include <strings.h>
  18: #include <stdio.h>
  19: 
  20: #include <sys/param.h>
  21: #include <sys/socket.h>
  22: #include <sys/socketvar.h>
  23: #include <sys/mbuf.h>
  24: #include <sys/protosw.h>
  25: 
  26: #include <arpa/inet.h>
  27: 
  28: #include <net/route.h>
  29: #include <netinet/in.h>
  30: #include <netinet/in_systm.h>
  31: #include <netinet/in_pcb.h>
  32: #include <netinet/ip.h>
  33: #include <netinet/ip_icmp.h>
  34: #include <netinet/icmp_var.h>
  35: #include <netinet/ip_var.h>
  36: #include <netinet/tcp.h>
  37: #include <netinet/tcpip.h>
  38: #include <netinet/tcp_seq.h>
  39: #define TCPSTATES
  40: #include <netinet/tcp_fsm.h>
  41: #include <netinet/tcp_timer.h>
  42: #include <netinet/tcp_var.h>
  43: #include <netinet/tcp_debug.h>
  44: #include <netinet/udp.h>
  45: #include <netinet/udp_var.h>
  46: 
  47: #include <netdb.h>
  48: 
  49: struct  inpcb inpcb;
  50: struct  tcpcb tcpcb;
  51: struct  socket sockb;
  52: extern  int kmem;
  53: extern  int Aflag;
  54: extern  int aflag;
  55: extern  int nflag;
  56: extern  int sflag;
  57: extern  char *plural();
  58: 
  59: #ifdef pdp11
  60: #define klseek slseek
  61: #endif
  62: 
  63: char    *inetname();
  64: 
  65: /*
  66:  * Print a summary of connections related to an Internet
  67:  * protocol.  For TCP, also give state of connection.
  68:  * Listening processes (aflag) are suppressed unless the
  69:  * -a (all) flag is specified.
  70:  */
  71: protopr(off, name)
  72:     off_t off;
  73:     char *name;
  74: {
  75:     struct inpcb cb;
  76:     register struct inpcb *prev, *next;
  77:     int istcp;
  78:     static int first = 1;
  79: 
  80:     if (off == 0)
  81:         return;
  82:     istcp = strcmp(name, "tcp") == 0;
  83:     klseek(kmem, off, 0);
  84:     read(kmem, (char *)&cb, sizeof (struct inpcb));
  85:     inpcb = cb;
  86:     prev = (struct inpcb *)off;
  87:     if (inpcb.inp_next == (struct inpcb *)off)
  88:         return;
  89:     while (inpcb.inp_next != (struct inpcb *)off) {
  90: 
  91:         next = inpcb.inp_next;
  92:         klseek(kmem, (off_t)next, 0);
  93:         read(kmem, (char *)&inpcb, sizeof (inpcb));
  94:         if (inpcb.inp_prev != prev) {
  95:             printf("???\n");
  96:             break;
  97:         }
  98:         if (!aflag &&
  99:           inet_lnaof(inpcb.inp_laddr.s_addr) == INADDR_ANY) {
 100:             prev = next;
 101:             continue;
 102:         }
 103:         klseek(kmem, (off_t)inpcb.inp_socket, 0);
 104:         read(kmem, (char *)&sockb, sizeof (sockb));
 105:         if (istcp) {
 106:             klseek(kmem, (off_t)inpcb.inp_ppcb, 0);
 107:             read(kmem, (char *)&tcpcb, sizeof (tcpcb));
 108:         }
 109:         if (first) {
 110:             printf("Active Internet connections");
 111:             if (aflag)
 112:                 printf(" (including servers)");
 113:             putchar('\n');
 114:             if (Aflag)
 115:                 printf("%-8.8s ", "PCB");
 116:             printf(Aflag ?
 117:                 "%-5.5s %-6.6s %-6.6s  %-18.18s %-18.18s %s\n" :
 118:                 "%-5.5s %-6.6s %-6.6s  %-22.22s %-22.22s %s\n",
 119:                 "Proto", "Recv-Q", "Send-Q",
 120:                 "Local Address", "Foreign Address", "(state)");
 121:             first = 0;
 122:         }
 123:         if (Aflag)
 124:             if (istcp)
 125:                 printf("%8x ", inpcb.inp_ppcb);
 126:             else
 127:                 printf("%8x ", next);
 128:         printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
 129:             sockb.so_snd.sb_cc);
 130:         inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
 131:         inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
 132:         if (istcp) {
 133:             if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
 134:                 printf(" %d", tcpcb.t_state);
 135:             else
 136:                 printf(" %s", tcpstates[tcpcb.t_state]);
 137:         }
 138:         putchar('\n');
 139:         prev = next;
 140:     }
 141: }
 142: 
 143: /*
 144:  * Dump TCP statistics structure.
 145:  */
 146: tcp_stats(off, name)
 147:     off_t off;
 148:     char *name;
 149: {
 150:     struct tcpstat tcpstat;
 151: 
 152:     if (off == 0)
 153:         return;
 154:     printf ("%s:\n", name);
 155:     klseek(kmem, off, 0);
 156:     read(kmem, (char *)&tcpstat, sizeof (tcpstat));
 157: 
 158: #define p(f, m)     printf(m, tcpstat.f, plural(tcpstat.f))
 159: #define p2(f1, f2, m)   printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
 160: 
 161:     p(tcps_sndtotal, "\t%ld packet%s sent\n");
 162:     p2(tcps_sndpack,tcps_sndbyte,
 163:         "\t\t%ld data packet%s (%ld byte%s)\n");
 164:     p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
 165:         "\t\t%ld data packet%s (%ld byte%s) retransmitted\n");
 166:     p2(tcps_sndacks, tcps_delack,
 167:         "\t\t%ld ack-only packet%s (%ld delayed)\n");
 168:     p(tcps_sndurg, "\t\t%ld URG only packet%s\n");
 169:     p(tcps_sndprobe, "\t\t%ld window probe packet%s\n");
 170:     p(tcps_sndwinup, "\t\t%ld window update packet%s\n");
 171:     p(tcps_sndctrl, "\t\t%ld control packet%s\n");
 172:     p(tcps_rcvtotal, "\t%ld packet%s received\n");
 173:     p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%ld ack%s (for %D byte%s)\n");
 174:     p(tcps_rcvdupack, "\t\t%ld duplicate ack%s\n");
 175:     p(tcps_rcvacktoomuch, "\t\t%ld ack%s for unsent data\n");
 176:     p2(tcps_rcvpack, tcps_rcvbyte,
 177:         "\t\t%ld packet%s (%ld byte%s) received in-sequence\n");
 178:     p2(tcps_rcvduppack, tcps_rcvdupbyte,
 179:         "\t\t%ld completely duplicate packet%s (%ld byte%s)\n");
 180:     p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
 181:         "\t\t%ld packet%s with some dup. data (%ld byte%s duped)\n");
 182:     p2(tcps_rcvoopack, tcps_rcvoobyte,
 183:         "\t\t%ld out-of-order packet%s (%ld byte%s)\n");
 184:     p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
 185:         "\t\t%ld packet%s (%ld byte%s) of data after window\n");
 186:     p(tcps_rcvwinprobe, "\t\t%ld window probe%s\n");
 187:     p(tcps_rcvwinupd, "\t\t%ld window update packet%s\n");
 188:     p(tcps_rcvafterclose, "\t\t%ld packet%s received after close\n");
 189:     p(tcps_rcvbadsum, "\t\t%ld discarded for bad checksum%s\n");
 190:     p(tcps_rcvbadoff, "\t\t%ld discarded for bad header offset field%s\n");
 191:     p(tcps_rcvshort, "\t\t%ld discarded because packet too short\n");
 192:     p(tcps_connattempt, "\t%ld connection request%s\n");
 193:     p(tcps_accepts, "\t%ld connection accept%s\n");
 194:     p(tcps_connects, "\t%D connection%s established (including accepts)\n");
 195:     p2(tcps_closed, tcps_drops,
 196:         "\t%ld connection%s closed (including %ld drop%s)\n");
 197:     p(tcps_conndrops, "\t%ld embryonic connection%s dropped\n");
 198:     p2(tcps_rttupdated, tcps_segstimed,
 199:         "\t%ld segment%s updated rtt (of %ld attempt%s)\n");
 200:     p(tcps_rexmttimeo, "\t%ld retransmit timeout%s\n");
 201:     p(tcps_timeoutdrop, "\t\t%ld connection%s dropped by rexmit timeout\n");
 202:     p(tcps_persisttimeo, "\t%ld persist timeout%s\n");
 203:     p(tcps_keeptimeo, "\t%ld keepalive timeout%s\n");
 204:     p(tcps_keepprobe, "\t\t%ld keepalive probe%s sent\n");
 205:     p(tcps_keepdrops, "\t\t%ld connection%s dropped by keepalive\n");
 206: #undef p
 207: #undef p2
 208: }
 209: 
 210: /*
 211:  * Dump UDP statistics structure.
 212:  */
 213: udp_stats(off, name)
 214:     off_t off;
 215:     char *name;
 216: {
 217:     struct udpstat udpstat;
 218: 
 219:     if (off == 0)
 220:         return;
 221:     klseek(kmem, off, 0);
 222:     read(kmem, (char *)&udpstat, sizeof (udpstat));
 223:     printf("%s:\n", name);
 224: #define p(f, m) printf(m, udpstat.f, plural(udpstat.f))
 225:     p(udps_hdrops, "\t%lu incomplete header%s\n");
 226:     p(udps_badlen, "\t%lu bad data length field%s\n");
 227:     p(udps_badsum, "\t%lu bad checksum%s\n");
 228:     p(udps_noport, "\t%lu no port%s\n");
 229:     p(udps_noportbcast, "\t%lu (arrived as bcast) no port%s\n");
 230: #undef p
 231: }
 232: 
 233: /*
 234:  * Dump IP statistics structure.
 235:  */
 236: ip_stats(off, name)
 237:     off_t off;
 238:     char *name;
 239: {
 240:     struct ipstat ipstat;
 241: 
 242:     if (off == 0)
 243:         return;
 244:     klseek(kmem, off, 0);
 245:     read(kmem, (char *)&ipstat, sizeof (ipstat));
 246: #if BSD>=43
 247:     printf("%s:\n\t%lu total packets received\n", name,
 248:         ipstat.ips_total);
 249: #endif
 250:     printf("\t%lu bad header checksum%s\n",
 251:         ipstat.ips_badsum, plural(ipstat.ips_badsum));
 252:     printf("\t%lu with size smaller than minimum\n", ipstat.ips_toosmall);
 253:     printf("\t%lu with data size < data length\n", ipstat.ips_tooshort);
 254:     printf("\t%lu with header length < data size\n", ipstat.ips_badhlen);
 255:     printf("\t%lu with data length < header length\n", ipstat.ips_badlen);
 256: #if BSD>=43
 257:     printf("\t%lu fragment%s received\n",
 258:         ipstat.ips_fragments, plural(ipstat.ips_fragments));
 259:     printf("\t%lu fragment%s dropped (dup or out of space)\n",
 260:         ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
 261:     printf("\t%lu fragment%s dropped after timeout\n",
 262:         ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
 263:     printf("\t%lu packet%s forwarded\n",
 264:         ipstat.ips_forward, plural(ipstat.ips_forward));
 265:     printf("\t%lu packet%s not forwardable\n",
 266:         ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
 267:     printf("\t%lu redirect%s sent\n",
 268:         ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
 269: #endif
 270: }
 271: 
 272: static  char *icmpnames[] = {
 273:     "echo reply",
 274:     "#1",
 275:     "#2",
 276:     "destination unreachable",
 277:     "source quench",
 278:     "routing redirect",
 279:     "#6",
 280:     "#7",
 281:     "echo",
 282:     "#9",
 283:     "#10",
 284:     "time exceeded",
 285:     "parameter problem",
 286:     "time stamp",
 287:     "time stamp reply",
 288:     "information request",
 289:     "information request reply",
 290:     "address mask request",
 291:     "address mask reply",
 292: };
 293: 
 294: /*
 295:  * Dump ICMP statistics.
 296:  */
 297: icmp_stats(off, name)
 298:     off_t off;
 299:     char *name;
 300: {
 301:     struct icmpstat icmpstat;
 302:     register int i, first;
 303: 
 304:     if (off == 0)
 305:         return;
 306:     klseek(kmem, off, 0);
 307:     read(kmem, (char *)&icmpstat, sizeof (icmpstat));
 308:     printf("%s:\n\t%lu call%s to icmp_error\n", name,
 309:         icmpstat.icps_error, plural(icmpstat.icps_error));
 310:     printf("\t%lu error%s not generated 'cuz old message was icmp\n",
 311:         icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
 312:     for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
 313:         if (icmpstat.icps_outhist[i] != 0) {
 314:             if (first) {
 315:                 printf("\tOutput histogram:\n");
 316:                 first = 0;
 317:             }
 318:             printf("\t\t%s: %lu\n", icmpnames[i],
 319:                 icmpstat.icps_outhist[i]);
 320:         }
 321:     printf("\t%lu message%s with bad code fields\n",
 322:         icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
 323:     printf("\t%lu message%s < minimum length\n",
 324:         icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
 325:     printf("\t%lu bad checksum%s\n",
 326:         icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
 327:     printf("\t%lu message%s with bad length\n",
 328:         icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
 329:     for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
 330:         if (icmpstat.icps_inhist[i] != 0) {
 331:             if (first) {
 332:                 printf("\tInput histogram:\n");
 333:                 first = 0;
 334:             }
 335:             printf("\t\t%s: %lu\n", icmpnames[i],
 336:                 icmpstat.icps_inhist[i]);
 337:         }
 338:     printf("\t%lu message response%s generated\n",
 339:         icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
 340: }
 341: 
 342: /*
 343:  * Pretty print an Internet address (net address + port).
 344:  * If the nflag was specified, use numbers instead of names.
 345:  */
 346: inetprint(in, port, proto)
 347:     register struct in_addr *in;
 348:     u_short port;
 349:     char *proto;
 350: {
 351:     struct servent *sp = 0;
 352:     char line[80], *cp, *index();
 353:     int width;
 354: 
 355:     sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in));
 356:     cp = index(line, '\0');
 357:     if (!nflag && port)
 358:         sp = getservbyport((int)port, proto);
 359:     if (sp || port == 0)
 360:         sprintf(cp, "%.8s", sp ? sp->s_name : "*");
 361:     else
 362:         sprintf(cp, "%u", ntohs((u_short)port));
 363:     width = Aflag ? 18 : 22;
 364:     printf(" %-*.*s", width, width, line);
 365: }
 366: 
 367: /*
 368:  * Construct an Internet address representation.
 369:  * If the nflag has been supplied, give
 370:  * numeric value, otherwise try for symbolic name.
 371:  */
 372: char *
 373: inetname(in)
 374:     struct in_addr in;
 375: {
 376:     register char *cp;
 377:     static char line[50];
 378:     struct hostent *hp;
 379:     struct netent *np;
 380:     static char domain[MAXHOSTNAMELEN + 1];
 381:     static int first = 1;
 382: 
 383:     if (first && !nflag) {
 384:         first = 0;
 385:         if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
 386:             (cp = index(domain, '.')))
 387:             (void) strcpy(domain, cp + 1);
 388:         else
 389:             domain[0] = 0;
 390:     }
 391:     cp = 0;
 392:     if (!nflag && in.s_addr != INADDR_ANY) {
 393:         u_long net = inet_netof(in);
 394:         u_long lna = inet_lnaof(in);
 395: 
 396:         if (lna == INADDR_ANY) {
 397:             np = getnetbyaddr(net, AF_INET);
 398:             if (np)
 399:                 cp = np->n_name;
 400:         }
 401:         if (cp == 0) {
 402:             hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
 403:             if (hp) {
 404:                 if ((cp = index(hp->h_name, '.')) &&
 405:                     !strcmp(cp + 1, domain))
 406:                     *cp = 0;
 407:                 cp = hp->h_name;
 408:             }
 409:         }
 410:     }
 411:     if (in.s_addr == INADDR_ANY)
 412:         strcpy(line, "*");
 413:     else if (cp)
 414:         strcpy(line, cp);
 415:     else {
 416:         in.s_addr = ntohl(in.s_addr);
 417: #define C(x)    (u_char)((x) & 0xff)
 418:         sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
 419:             C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
 420:     }
 421:     return (line);
 422: }

Defined functions

Defined variables

Defined macros