1: /* 2: * Copyright (c) 1983 Regents of the University of California. 3: * All rights reserved. The Berkeley software License Agreement 4: * specifies the terms and conditions for redistribution. 5: */ 6: 7: #if defined(DO_SCCS) && !defined(lint) 8: static char sccsid[] = "@(#)inet.c 5.4 (Berkeley) 2/25/86"; 9: #endif 10: 11: #include <sys/param.h> 12: #include <sys/socket.h> 13: #include <sys/socketvar.h> 14: #include <sys/mbuf.h> 15: #include <sys/protosw.h> 16: 17: #include <net/route.h> 18: #include <netinet/in.h> 19: #include <netinet/in_systm.h> 20: #include <netinet/in_pcb.h> 21: #include <netinet/ip.h> 22: #include <netinet/ip_icmp.h> 23: #include <netinet/icmp_var.h> 24: #include <netinet/ip_var.h> 25: #include <netinet/tcp.h> 26: #include <netinet/tcpip.h> 27: #include <netinet/tcp_seq.h> 28: #define TCPSTATES 29: #include <netinet/tcp_fsm.h> 30: #include <netinet/tcp_timer.h> 31: #include <netinet/tcp_var.h> 32: #include <netinet/tcp_debug.h> 33: #include <netinet/udp.h> 34: #include <netinet/udp_var.h> 35: 36: #include <arpa/inet.h> 37: #include <netdb.h> 38: #include "net.h" /* for CRASH only */ 39: 40: extern int kmem; 41: extern int Aflag; 42: extern int aflag; 43: extern int nflag; 44: 45: static int first = 1; 46: char *inetname(); 47: 48: /* 49: * Print a summary of connections related to an Internet 50: * protocol. For TCP, also give state of connection. 51: * Listening processes (aflag) are suppressed unless the 52: * -a (all) flag is specified. 53: */ 54: protopr(off, name) 55: off_t off; 56: char *name; 57: { 58: register struct inpcb *prev, *next; 59: struct inpcb inpcb, *inpcbp = &inpcb; 60: struct socket sockb, *sockp = &sockb; 61: struct tcpcb tcpcb, *tcpcbp = &tcpcb; 62: int rcvct, sndct; /* number of mbufs in receive/send queue */ 63: int istcp; 64: 65: if (off == 0) 66: return; 67: istcp = strcmp(name, "tcp") == 0; 68: klseek(kmem, (off_t)off, 0); 69: read(kmem, inpcbp, sizeof (struct inpcb)); 70: prev = (struct inpcb *)off; 71: if (inpcbp->inp_next == (struct inpcb *)off) 72: return; 73: while (inpcbp->inp_next != (struct inpcb *)off) { 74: char *cp; 75: 76: next = inpcbp->inp_next; 77: #ifdef CRASH 78: if (!VALADD(next, struct inpcb)) { 79: printf("bad inpcb address ("); 80: DUMP((unsigned)next); 81: puts(")"); 82: break; 83: } 84: (putars((unsigned)next, sizeof(struct inpcb), 85: AS_INPCB))->as_ref++; 86: inpcbp = XLATE(next, struct inpcb *); 87: #else 88: klseek(kmem, (off_t)next, 0); 89: read(kmem, inpcbp, sizeof (struct inpcb)); 90: #endif CRASH 91: if (inpcbp->inp_prev != prev) { 92: printf("???\n"); 93: break; 94: } 95: if (!aflag && 96: inet_lnaof(inpcbp->inp_laddr.s_addr) == INADDR_ANY) { 97: prev = next; 98: continue; 99: } 100: #ifdef CRASH 101: if (!VALADD(inpcbp->inp_socket, struct socket)) { 102: printf("bad socket address ("); 103: DUMP((unsigned)inpcbp->inp_socket); 104: puts(")"); 105: break; 106: } 107: (putars((unsigned)inpcbp->inp_socket,sizeof(struct socket), 108: AS_SOCK))->as_ref++; 109: sockp = XLATE(inpcbp->inp_socket, struct socket *); 110: #else 111: klseek(kmem, (off_t)inpcbp->inp_socket, 0); 112: read(kmem, sockp, sizeof (struct socket)); 113: #endif CRASH 114: if (istcp) { 115: #ifdef CRASH 116: if (!VALADD(inpcbp->inp_ppcb, struct tcpcb)) { 117: printf("bad tcpcb address ("); 118: DUMP((unsigned)inpcbp->inp_ppcb); 119: puts(")"); 120: break; 121: } 122: (putars((unsigned)inpcbp->inp_ppcb, 123: sizeof(struct tcpcb), AS_TCPCB))->as_ref++; 124: tcpcbp = XLATE(inpcbp->inp_ppcb, struct tcpcb *); 125: #else 126: klseek(kmem, (off_t)inpcbp->inp_ppcb, 0); 127: read(kmem, &tcpcb, sizeof (tcpcb)); 128: #endif CRASH 129: } 130: if (first) { 131: printf("Active Internet connections"); 132: if (aflag) 133: printf(" (including servers)"); 134: putchar('\n'); 135: if (Aflag) 136: printf("%-8.8s ", "PCB"); 137: printf(Aflag ? 138: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" : 139: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n", 140: "Proto", "Recv-Q", "Send-Q", 141: "Local Address", "Foreign Address", "(state)"); 142: first = 0; 143: } 144: #ifdef CRASH /* chase the chains of mbufs */ 145: rcvct = chasem(sockp->so_rcv.sb_mb,"recv",sockp->so_rcv.sb_cc); 146: sndct = chasem(sockp->so_snd.sb_mb,"send",sockp->so_snd.sb_cc); 147: #endif CRASH 148: if (Aflag) 149: if (istcp) 150: printf("%8x ", inpcbp->inp_ppcb); 151: else 152: printf("%8x ", next); 153: printf("%-5.5s %6d %6d ", name, sockp->so_rcv.sb_cc, 154: sockp->so_snd.sb_cc); 155: inetprint(&inpcbp->inp_laddr, inpcbp->inp_lport, name); 156: inetprint(&inpcbp->inp_faddr, inpcbp->inp_fport, name); 157: if (istcp) { 158: if (tcpcbp->t_state < 0 || 159: tcpcbp->t_state >= TCP_NSTATES) 160: printf(" %d", tcpcbp->t_state); 161: else 162: printf(" %s", tcpstates[tcpcbp->t_state]); 163: } 164: putchar('\n'); 165: #ifdef CRASH 166: if (istcp) { 167: if (tcpcbp->t_tcpopt || tcpcbp->t_inpcb != next) 168: printf("--tcp opts=%4x t_inpcb=%4x (actual inpcb=%4x)\n", 169: tcpcbp->t_tcpopt, tcpcbp->t_inpcb, next); 170: } 171: #endif CRASH 172: prev = next; 173: } 174: } 175: 176: /* 177: * Dump TCP statistics structure. 178: */ 179: tcp_stats(off, name) 180: off_t off; 181: char *name; 182: { 183: struct tcpstat tcpstat; 184: 185: if (off == 0) 186: return; 187: klseek(kmem, (off_t)off, 0); 188: read(kmem, (char *)&tcpstat, sizeof (tcpstat)); 189: printf("%s:\n\t%D incomplete header%s\n", name, 190: tcpstat.tcps_hdrops, plural(tcpstat.tcps_hdrops)); 191: printf("\t%D bad checksum%s\n", 192: tcpstat.tcps_badsum, plural(tcpstat.tcps_badsum)); 193: printf("\t%D bad header offset field%s\n", 194: tcpstat.tcps_badoff, plural(tcpstat.tcps_badoff)); 195: printf("\t%D bad segment%s\n", 196: tcpstat.tcps_badsegs, plural(tcpstat.tcps_badsegs)); 197: printf("\t%D unacknowledged packet%s\n", 198: tcpstat.tcps_unack, plural(tcpstat.tcps_unack)); 199: } 200: 201: /* 202: * Dump UDP statistics structure. 203: */ 204: udp_stats(off, name) 205: off_t off; 206: char *name; 207: { 208: struct udpstat udpstat; 209: 210: if (off == 0) 211: return; 212: klseek(kmem, (off_t)off, 0); 213: read(kmem, (char *)&udpstat, sizeof (udpstat)); 214: printf("%s:\n\t%D incomplete header%s\n", name, 215: udpstat.udps_hdrops, plural(udpstat.udps_hdrops)); 216: printf("\t%D bad data length field%s\n", 217: udpstat.udps_badlen, plural(udpstat.udps_badlen)); 218: printf("\t%D bad checksum%s\n", 219: udpstat.udps_badsum, plural(udpstat.udps_badsum)); 220: } 221: 222: /* 223: * Dump IP statistics structure. 224: */ 225: ip_stats(off, name) 226: off_t off; 227: char *name; 228: { 229: struct ipstat ipstat; 230: 231: if (off == 0) 232: return; 233: klseek(kmem, (off_t)off, 0); 234: read(kmem, (char *)&ipstat, sizeof (ipstat)); 235: printf("%s:\n\t%D total packets received\n", name, 236: ipstat.ips_total); 237: printf("\t%D bad header checksum%s\n", 238: ipstat.ips_badsum, plural(ipstat.ips_badsum)); 239: printf("\t%D with size smaller than minimum\n", ipstat.ips_tooshort); 240: printf("\t%D with data size < data length\n", ipstat.ips_toosmall); 241: printf("\t%D with header length < data size\n", ipstat.ips_badhlen); 242: printf("\t%D with data length < header length\n", ipstat.ips_badlen); 243: printf("\t%D fragment%s received\n", 244: ipstat.ips_fragments, plural(ipstat.ips_fragments)); 245: printf("\t%D fragment%s dropped (dup or out of space)\n", 246: ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped)); 247: printf("\t%D fragment%s dropped after timeout\n", 248: ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout)); 249: printf("\t%D packet%s forwarded\n", 250: ipstat.ips_forward, plural(ipstat.ips_forward)); 251: printf("\t%D packet%s not forwardable\n", 252: ipstat.ips_cantforward, plural(ipstat.ips_cantforward)); 253: printf("\t%D redirect%s sent\n", 254: ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent)); 255: } 256: 257: static char *icmpnames[] = { 258: "echo reply", 259: "#1", 260: "#2", 261: "destination unreachable", 262: "source quench", 263: "routing redirect", 264: "#6", 265: "#7", 266: "echo", 267: "#9", 268: "#10", 269: "time exceeded", 270: "parameter problem", 271: "time stamp", 272: "time stamp reply", 273: "information request", 274: "information request reply", 275: "address mask request", 276: "address mask reply", 277: }; 278: 279: /* 280: * Dump ICMP statistics. 281: */ 282: icmp_stats(off, name) 283: off_t off; 284: char *name; 285: { 286: struct icmpstat icmpstat; 287: register int i, first; 288: 289: if (off == 0) 290: return; 291: klseek(kmem, (off_t)off, 0); 292: read(kmem, (char *)&icmpstat, sizeof (icmpstat)); 293: printf("%s:\n\t%D call%s to icmp_error\n", name, 294: icmpstat.icps_error, plural(icmpstat.icps_error)); 295: printf("\t%D error%s not generated 'cuz old message was icmp\n", 296: icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp)); 297: for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++) 298: if (icmpstat.icps_outhist[i] != 0) { 299: if (first) { 300: printf("\tOutput histogram:\n"); 301: first = 0; 302: } 303: printf("\t\t%s: %D\n", icmpnames[i], 304: icmpstat.icps_outhist[i]); 305: } 306: printf("\t%D message%s with bad code fields\n", 307: icmpstat.icps_badcode, plural(icmpstat.icps_badcode)); 308: printf("\t%D message%s < minimum length\n", 309: icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort)); 310: printf("\t%D bad checksum%s\n", 311: icmpstat.icps_checksum, plural(icmpstat.icps_checksum)); 312: printf("\t%D message%s with bad length\n", 313: icmpstat.icps_badlen, plural(icmpstat.icps_badlen)); 314: for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++) 315: if (icmpstat.icps_inhist[i] != 0) { 316: if (first) { 317: printf("\tInput histogram:\n"); 318: first = 0; 319: } 320: printf("\t\t%s: %D\n", icmpnames[i], 321: icmpstat.icps_inhist[i]); 322: } 323: printf("\t%D message response%s generated\n", 324: icmpstat.icps_reflect, plural(icmpstat.icps_reflect)); 325: } 326: 327: /* 328: * Pretty print an Internet address (net address + port). 329: * If the nflag was specified, use numbers instead of names. 330: */ 331: inetprint(in, port, proto) 332: register struct in_addr *in; 333: int port; 334: char *proto; 335: { 336: struct servent *sp = 0; 337: char line[80], *cp, *index(); 338: int width; 339: 340: sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in)); 341: cp = index(line, '\0'); 342: if (!nflag && port) 343: sp = getservbyport(port, proto); 344: if (sp || port == 0) 345: sprintf(cp, "%.8s", sp ? sp->s_name : "*"); 346: else 347: sprintf(cp, "%d", ntohs((u_short)port)); 348: width = Aflag ? 18 : 22; 349: printf(" %-*.*s", width, width, line); 350: } 351: 352: /* 353: * Construct an Internet address representation. 354: * If the nflag has been supplied, give 355: * numeric value, otherwise try for symbolic name. 356: */ 357: char * 358: inetname(in) 359: struct in_addr in; 360: { 361: register char *cp; 362: char *index(); 363: static char line[50]; 364: struct hostent *hp; 365: struct netent *np; 366: static char domain[MAXHOSTNAMELEN + 1]; 367: static int first = 1; 368: 369: if (first && !nflag) { 370: first = 0; 371: if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 372: (cp = index(domain, '.'))) 373: (void) strcpy(domain, cp + 1); 374: else 375: domain[0] = 0; 376: } 377: cp = 0; 378: if (!nflag && in.s_addr != INADDR_ANY) { 379: u_long net = inet_netof(in); 380: u_long lna = inet_lnaof(in); 381: 382: if (lna == INADDR_ANY) { 383: np = getnetbyaddr(net, AF_INET); 384: if (np) 385: cp = np->n_name; 386: } 387: if (cp == 0) { 388: hp = gethostbyaddr(&in, sizeof (in), AF_INET); 389: if (hp) { 390: if ((cp = index(hp->h_name, '.')) && 391: !strcmp(cp + 1, domain)) 392: *cp = 0; 393: cp = hp->h_name; 394: } 395: } 396: } 397: if (in.s_addr == INADDR_ANY) 398: strcpy(line, "*"); 399: else if (cp) 400: strcpy(line, cp); 401: else { 402: in.s_addr = ntohl(in.s_addr); 403: #define C(x) ((x) & 0xff) 404: sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 405: C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 406: } 407: return (line); 408: }
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