X-Git-Url: https://git.saurik.com/apple/network_cmds.git/blobdiff_plain/3e383549fc1464bee03c045db0823feb3c1b096e..8052502f69480852fa9ccecf3788125a3d1c6aaf:/tcpdump.tproj/print-ip.c diff --git a/tcpdump.tproj/print-ip.c b/tcpdump.tproj/print-ip.c deleted file mode 100644 index 6c0c31c..0000000 --- a/tcpdump.tproj/print-ip.c +++ /dev/null @@ -1,547 +0,0 @@ -/* - * 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 -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#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(")"); - } -}