+++ /dev/null
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.0 (the 'License'). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License."
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
- * The 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: (1) source code distributions
- * retain the above copyright notice and this paragraph in its entirety, (2)
- * distributions including binary code include the above copyright notice and
- * this paragraph in its entirety in the documentation or other materials
- * provided with the distribution, and (3) all advertising materials mentioning
- * features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
- * Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-ip.c,v 1.1.1.1 1999/05/02 03:58:33 wsanchez Exp $ (LBL)";
-#endif
-
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_var.h>
-#include <netinet/udp.h>
-#include <netinet/udp_var.h>
-#include <netinet/tcp.h>
-#include <netinet/tcpip.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "addrtoname.h"
-#include "interface.h"
-#include "extract.h" /* must come after interface.h */
-
-/* Compatibility */
-#ifndef IPPROTO_ND
-#define IPPROTO_ND 77
-#endif
-
-#ifndef IN_CLASSD
-#define IN_CLASSD(i) (((int32_t)(i) & 0xf0000000) == 0xe0000000)
-#endif
-
-/* (following from ipmulti/mrouted/prune.h) */
-
-/*
- * The packet format for a traceroute request.
- */
-struct tr_query {
- u_int tr_src; /* traceroute source */
- u_int tr_dst; /* traceroute destination */
- u_int tr_raddr; /* traceroute response address */
-#ifdef WORDS_BIGENDIAN
- struct {
- u_int ttl : 8; /* traceroute response ttl */
- u_int qid : 24; /* traceroute query id */
- } q;
-#else
- struct {
- u_int qid : 24; /* traceroute query id */
- u_int ttl : 8; /* traceroute response ttl */
- } q;
-#endif
-};
-
-#define tr_rttl q.ttl
-#define tr_qid q.qid
-
-/*
- * Traceroute response format. A traceroute response has a tr_query at the
- * beginning, followed by one tr_resp for each hop taken.
- */
-struct tr_resp {
- u_int tr_qarr; /* query arrival time */
- u_int tr_inaddr; /* incoming interface address */
- u_int tr_outaddr; /* outgoing interface address */
- u_int tr_rmtaddr; /* parent address in source tree */
- u_int tr_vifin; /* input packet count on interface */
- u_int tr_vifout; /* output packet count on interface */
- u_int tr_pktcnt; /* total incoming packets for src-grp */
- u_char tr_rproto; /* routing proto deployed on router */
- u_char tr_fttl; /* ttl required to forward on outvif */
- u_char tr_smask; /* subnet mask for src addr */
- u_char tr_rflags; /* forwarding error codes */
-};
-
-/* defs within mtrace */
-#define TR_QUERY 1
-#define TR_RESP 2
-
-/* fields for tr_rflags (forwarding error codes) */
-#define TR_NO_ERR 0
-#define TR_WRONG_IF 1
-#define TR_PRUNED 2
-#define TR_OPRUNED 3
-#define TR_SCOPED 4
-#define TR_NO_RTE 5
-#define TR_NO_FWD 7
-#define TR_NO_SPACE 0x81
-#define TR_OLD_ROUTER 0x82
-
-/* fields for tr_rproto (routing protocol) */
-#define TR_PROTO_DVMRP 1
-#define TR_PROTO_MOSPF 2
-#define TR_PROTO_PIM 3
-#define TR_PROTO_CBT 4
-
-static void print_mtrace(register const u_char *bp, register u_int len)
-{
- register struct tr_query *tr = (struct tr_query *)(bp + 8);
-
- printf("mtrace %d: %s to %s reply-to %s", tr->tr_qid,
- ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
- ipaddr_string(&tr->tr_raddr));
- if (IN_CLASSD(ntohl(tr->tr_raddr)))
- printf(" with-ttl %d", tr->tr_rttl);
-}
-
-static void print_mresp(register const u_char *bp, register u_int len)
-{
- register struct tr_query *tr = (struct tr_query *)(bp + 8);
-
- printf("mresp %d: %s to %s reply-to %s", tr->tr_qid,
- ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
- ipaddr_string(&tr->tr_raddr));
- if (IN_CLASSD(ntohl(tr->tr_raddr)))
- printf(" with-ttl %d", tr->tr_rttl);
-}
-
-static void
-igmp_print(register const u_char *bp, register u_int len,
- register const u_char *bp2)
-{
- register const struct ip *ip;
-
- ip = (const struct ip *)bp2;
- (void)printf("%s > %s: ",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
-
- TCHECK2(bp[0], 8);
- switch (bp[0]) {
- case 0x11:
- (void)printf("igmp query");
- if (*(int *)&bp[4])
- (void)printf(" [gaddr %s]", ipaddr_string(&bp[4]));
- if (len != 8)
- (void)printf(" [len %d]", len);
- break;
- case 0x12:
- (void)printf("igmp report %s", ipaddr_string(&bp[4]));
- if (len != 8)
- (void)printf(" [len %d]", len);
- break;
- case 0x16:
- (void)printf("igmp nreport %s", ipaddr_string(&bp[4]));
- break;
- case 0x17:
- (void)printf("igmp leave %s", ipaddr_string(&bp[4]));
- break;
- case 0x13:
- (void)printf("igmp dvmrp");
- if (len < 8)
- (void)printf(" [len %d]", len);
- else
- dvmrp_print(bp, len);
- break;
- case 0x14:
- (void)printf("igmp pim");
- pim_print(bp, len);
- break;
- case 0x1e:
- print_mresp(bp, len);
- break;
- case 0x1f:
- print_mtrace(bp, len);
- break;
- default:
- (void)printf("igmp-%d", bp[0] & 0xf);
- break;
- }
- if ((bp[0] >> 4) != 1)
- (void)printf(" [v%d]", bp[0] >> 4);
-
- TCHECK2(bp[0], len);
- if (vflag) {
- /* Check the IGMP checksum */
- u_int32_t sum = 0;
- int count;
- const u_short *sp = (u_short *)bp;
-
- for (count = len / 2; --count >= 0; )
- sum += *sp++;
- if (len & 1)
- sum += ntohs(*(u_char *) sp << 8);
- while (sum >> 16)
- sum = (sum & 0xffff) + (sum >> 16);
- sum = 0xffff & ~sum;
- if (sum != 0)
- printf(" bad igmp cksum %x!", EXTRACT_16BITS(&bp[2]));
- }
- return;
-trunc:
- fputs("[|igmp]", stdout);
-}
-
-/*
- * print the recorded route in an IP RR, LSRR or SSRR option.
- */
-static void
-ip_printroute(const char *type, register const u_char *cp, u_int length)
-{
- register u_int ptr = cp[2] - 1;
- register u_int len;
-
- printf(" %s{", type);
- if ((length + 1) & 3)
- printf(" [bad length %d]", length);
- if (ptr < 3 || ((ptr + 1) & 3) || ptr > length + 1)
- printf(" [bad ptr %d]", cp[2]);
-
- type = "";
- for (len = 3; len < length; len += 4) {
- if (ptr == len)
- type = "#";
- printf("%s%s", type, ipaddr_string(&cp[len]));
- type = " ";
- }
- printf("%s}", ptr == len? "#" : "");
-}
-
-/*
- * print IP options.
- */
-static void
-ip_optprint(register const u_char *cp, u_int length)
-{
- register u_int len;
-
- for (; length > 0; cp += len, length -= len) {
- int tt = *cp;
-
- len = (tt == IPOPT_NOP || tt == IPOPT_EOL) ? 1 : cp[1];
- if (len <= 0) {
- printf("[|ip op len %d]", len);
- return;
- }
- if (&cp[1] >= snapend || cp + len > snapend) {
- printf("[|ip]");
- return;
- }
- switch (tt) {
-
- case IPOPT_EOL:
- printf(" EOL");
- if (length > 1)
- printf("-%d", length - 1);
- return;
-
- case IPOPT_NOP:
- printf(" NOP");
- break;
-
- case IPOPT_TS:
- printf(" TS{%d}", len);
- break;
-
- case IPOPT_SECURITY:
- printf(" SECURITY{%d}", len);
- break;
-
- case IPOPT_RR:
- printf(" RR{%d}=", len);
- ip_printroute("RR", cp, len);
- break;
-
- case IPOPT_SSRR:
- ip_printroute("SSRR", cp, len);
- break;
-
- case IPOPT_LSRR:
- ip_printroute("LSRR", cp, len);
- break;
-
- default:
- printf(" IPOPT-%d{%d}", cp[0], len);
- break;
- }
- }
-}
-
-/*
- * compute an IP header checksum.
- * don't modifiy the packet.
- */
-static int
-in_cksum(const struct ip *ip)
-{
- register const u_short *sp = (u_short *)ip;
- register u_int32_t sum = 0;
- register int count;
-
- /*
- * No need for endian conversions.
- */
- for (count = ip->ip_hl * 2; --count >= 0; )
- sum += *sp++;
- while (sum > 0xffff)
- sum = (sum & 0xffff) + (sum >> 16);
- sum = ~sum & 0xffff;
-
- return (sum);
-}
-
-/*
- * print an IP datagram.
- */
-void
-ip_print(register const u_char *bp, register u_int length)
-{
- register const struct ip *ip;
- register u_int hlen, len, off;
- register const u_char *cp;
-
- ip = (const struct ip *)bp;
-#ifdef LBL_ALIGN
- /*
- * If the IP header is not aligned, copy into abuf.
- * This will never happen with BPF. It does happen raw packet
- * dumps from -r.
- */
- if ((long)ip & 3) {
- static u_char *abuf = NULL;
- static int didwarn = 0;
-
- if (abuf == NULL) {
- abuf = (u_char *)malloc(snaplen);
- if (abuf == NULL)
- error("ip_print: malloc");
- }
- memcpy((char *)abuf, (char *)ip, min(length, snaplen));
- snapend += abuf - (u_char *)ip;
- packetp = abuf;
- ip = (struct ip *)abuf;
- /* We really want libpcap to give us aligned packets */
- if (!didwarn) {
- warning("compensating for unaligned libpcap packets");
- ++didwarn;
- }
- }
-#endif
- if ((u_char *)(ip + 1) > snapend) {
- printf("[|ip]");
- return;
- }
- if (length < sizeof (struct ip)) {
- (void)printf("truncated-ip %d", length);
- return;
- }
- hlen = ip->ip_hl * 4;
-
- len = ntohs(ip->ip_len);
- if (length < len)
- (void)printf("truncated-ip - %d bytes missing!",
- len - length);
- len -= hlen;
-
- /*
- * If this is fragment zero, hand it to the next higher
- * level protocol.
- */
- off = ntohs(ip->ip_off);
- if ((off & 0x1fff) == 0) {
- cp = (const u_char *)ip + hlen;
- switch (ip->ip_p) {
-
- case IPPROTO_TCP:
- tcp_print(cp, len, (const u_char *)ip);
- break;
-
- case IPPROTO_UDP:
- udp_print(cp, len, (const u_char *)ip);
- break;
-
- case IPPROTO_ICMP:
- icmp_print(cp, (const u_char *)ip);
- break;
-
-#ifndef IPPROTO_IGRP
-#define IPPROTO_IGRP 9
-#endif
- case IPPROTO_IGRP:
- igrp_print(cp, len, (const u_char *)ip);
- break;
-
- case IPPROTO_ND:
- (void)printf("%s > %s:", ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
- (void)printf(" nd %d", len);
- break;
-
- case IPPROTO_EGP:
- egp_print(cp, len, (const u_char *)ip);
- break;
-
-#ifndef IPPROTO_OSPF
-#define IPPROTO_OSPF 89
-#endif
- case IPPROTO_OSPF:
- ospf_print(cp, len, (const u_char *)ip);
- break;
-
-#ifndef IPPROTO_IGMP
-#define IPPROTO_IGMP 2
-#endif
- case IPPROTO_IGMP:
- igmp_print(cp, len, (const u_char *)ip);
- break;
-
-#ifndef IPPROTO_ENCAP
-#define IPPROTO_ENCAP 4
-#endif
- case IPPROTO_ENCAP:
- /* ip-in-ip encapsulation */
- if (vflag)
- (void)printf("%s > %s: ",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
- ip_print(cp, len);
- if (! vflag) {
- printf(" (encap)");
- return;
- }
- break;
-
-#ifndef IPPROTO_GRE
-#define IPPROTO_GRE 47
-#endif
- case IPPROTO_GRE:
- if (vflag)
- (void)printf("gre %s > %s: ",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
- /* do it */
- gre_print(cp, len);
- if (! vflag) {
- printf(" (gre encap)");
- return;
- }
- break;
-
- default:
- (void)printf("%s > %s:", ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
- (void)printf(" ip-proto-%d %d", ip->ip_p, len);
- break;
- }
- }
- /*
- * for fragmented datagrams, print id:size@offset. On all
- * but the last stick a "+". For unfragmented datagrams, note
- * the don't fragment flag.
- */
- if (off & 0x3fff) {
- /*
- * if this isn't the first frag, we're missing the
- * next level protocol header. print the ip addr.
- */
- if (off & 0x1fff)
- (void)printf("%s > %s:", ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
- (void)printf(" (frag %d:%d@%d%s)", ntohs(ip->ip_id), len,
- (off & 0x1fff) * 8,
- (off & IP_MF)? "+" : "");
- } else if (off & IP_DF)
- (void)printf(" (DF)");
-
- if (ip->ip_tos)
- (void)printf(" [tos 0x%x]", (int)ip->ip_tos);
- if (ip->ip_ttl <= 1)
- (void)printf(" [ttl %d]", (int)ip->ip_ttl);
-
- if (vflag) {
- int sum;
- char *sep = "";
-
- printf(" (");
- if (ip->ip_ttl > 1) {
- (void)printf("%sttl %d", sep, (int)ip->ip_ttl);
- sep = ", ";
- }
- if ((off & 0x3fff) == 0) {
- (void)printf("%sid %d", sep, (int)ntohs(ip->ip_id));
- sep = ", ";
- }
- if ((u_char *)ip + hlen <= snapend) {
- sum = in_cksum(ip);
- if (sum != 0) {
- (void)printf("%sbad cksum %x!", sep,
- ntohs(ip->ip_sum));
- sep = ", ";
- }
- }
- if ((hlen -= sizeof(struct ip)) > 0) {
- (void)printf("%soptlen=%d", sep, hlen);
- ip_optprint((u_char *)(ip + 1), hlen);
- }
- printf(")");
- }
-}
projects / apple / network_cmds.git / blobdiff