diff options
author | rpaulo <rpaulo@FreeBSD.org> | 2009-03-20 13:27:51 +0000 |
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committer | rpaulo <rpaulo@FreeBSD.org> | 2009-03-20 13:27:51 +0000 |
commit | 04b1d6babecbe3eed463c150b6e933a2b6d342a9 (patch) | |
tree | 36afae3dff76dde8d1cee5971ff7f1bc4922ad0f /contrib/tcpdump/print-domain.c | |
parent | 3b74598d7ea581deadb14ec8ba1c77c14295a7c8 (diff) | |
download | FreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.zip FreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.tar.gz |
Flatten vendor/tcpdump and remove keyword expansion.
Diffstat (limited to 'contrib/tcpdump/print-domain.c')
-rw-r--r-- | contrib/tcpdump/print-domain.c | 732 |
1 files changed, 0 insertions, 732 deletions
diff --git a/contrib/tcpdump/print-domain.c b/contrib/tcpdump/print-domain.c deleted file mode 100644 index d4a35d8..0000000 --- a/contrib/tcpdump/print-domain.c +++ /dev/null @@ -1,732 +0,0 @@ -/* - * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 - * 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[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.89.2.8 2007/02/13 19:19:27 guy Exp $ (LBL)"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <tcpdump-stdinc.h> - -#include "nameser.h" - -#include <stdio.h> -#include <string.h> - -#include "interface.h" -#include "addrtoname.h" -#include "extract.h" /* must come after interface.h */ - -static const char *ns_ops[] = { - "", " inv_q", " stat", " op3", " notify", " update", " op6", " op7", - " op8", " updataA", " updateD", " updateDA", - " updateM", " updateMA", " zoneInit", " zoneRef", -}; - -static const char *ns_resp[] = { - "", " FormErr", " ServFail", " NXDomain", - " NotImp", " Refused", " YXDomain", " YXRRSet", - " NXRRSet", " NotAuth", " NotZone", " Resp11", - " Resp12", " Resp13", " Resp14", " NoChange", -}; - -/* skip over a domain name */ -static const u_char * -ns_nskip(register const u_char *cp) -{ - register u_char i; - - if (!TTEST2(*cp, 1)) - return (NULL); - i = *cp++; - while (i) { - if ((i & INDIR_MASK) == INDIR_MASK) - return (cp + 1); - if ((i & INDIR_MASK) == EDNS0_MASK) { - int bitlen, bytelen; - - if ((i & ~INDIR_MASK) != EDNS0_ELT_BITLABEL) - return(NULL); /* unknown ELT */ - if (!TTEST2(*cp, 1)) - return (NULL); - if ((bitlen = *cp++) == 0) - bitlen = 256; - bytelen = (bitlen + 7) / 8; - cp += bytelen; - } else - cp += i; - if (!TTEST2(*cp, 1)) - return (NULL); - i = *cp++; - } - return (cp); -} - -/* print a <domain-name> */ -static const u_char * -blabel_print(const u_char *cp) -{ - int bitlen, slen, b; - const u_char *bitp, *lim; - char tc; - - if (!TTEST2(*cp, 1)) - return(NULL); - if ((bitlen = *cp) == 0) - bitlen = 256; - slen = (bitlen + 3) / 4; - lim = cp + 1 + slen; - - /* print the bit string as a hex string */ - printf("\\[x"); - for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) { - TCHECK(*bitp); - printf("%02x", *bitp); - } - if (b > 4) { - TCHECK(*bitp); - tc = *bitp++; - printf("%02x", tc & (0xff << (8 - b))); - } else if (b > 0) { - TCHECK(*bitp); - tc = *bitp++; - printf("%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b))); - } - printf("/%d]", bitlen); - return lim; -trunc: - printf(".../%d]", bitlen); - return NULL; -} - -static int -labellen(const u_char *cp) -{ - register u_int i; - - if (!TTEST2(*cp, 1)) - return(-1); - i = *cp; - if ((i & INDIR_MASK) == EDNS0_MASK) { - int bitlen, elt; - if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL) { - printf("<ELT %d>", elt); - return(-1); - } - if (!TTEST2(*(cp + 1), 1)) - return(-1); - if ((bitlen = *(cp + 1)) == 0) - bitlen = 256; - return(((bitlen + 7) / 8) + 1); - } else - return(i); -} - -static const u_char * -ns_nprint(register const u_char *cp, register const u_char *bp) -{ - register u_int i, l; - register const u_char *rp = NULL; - register int compress = 0; - int chars_processed; - int elt; - int data_size = snapend - bp; - - if ((l = labellen(cp)) == (u_int)-1) - return(NULL); - if (!TTEST2(*cp, 1)) - return(NULL); - chars_processed = 1; - if (((i = *cp++) & INDIR_MASK) != INDIR_MASK) { - compress = 0; - rp = cp + l; - } - - if (i != 0) - while (i && cp < snapend) { - if ((i & INDIR_MASK) == INDIR_MASK) { - if (!compress) { - rp = cp + 1; - compress = 1; - } - if (!TTEST2(*cp, 1)) - return(NULL); - cp = bp + (((i << 8) | *cp) & 0x3fff); - if ((l = labellen(cp)) == (u_int)-1) - return(NULL); - if (!TTEST2(*cp, 1)) - return(NULL); - i = *cp++; - chars_processed++; - - /* - * If we've looked at every character in - * the message, this pointer will make - * us look at some character again, - * which means we're looping. - */ - if (chars_processed >= data_size) { - printf("<LOOP>"); - return (NULL); - } - continue; - } - if ((i & INDIR_MASK) == EDNS0_MASK) { - elt = (i & ~INDIR_MASK); - switch(elt) { - case EDNS0_ELT_BITLABEL: - if (blabel_print(cp) == NULL) - return (NULL); - break; - default: - /* unknown ELT */ - printf("<ELT %d>", elt); - return(NULL); - } - } else { - if (fn_printn(cp, l, snapend)) - return(NULL); - } - - cp += l; - chars_processed += l; - putchar('.'); - if ((l = labellen(cp)) == (u_int)-1) - return(NULL); - if (!TTEST2(*cp, 1)) - return(NULL); - i = *cp++; - chars_processed++; - if (!compress) - rp += l + 1; - } - else - putchar('.'); - return (rp); -} - -/* print a <character-string> */ -static const u_char * -ns_cprint(register const u_char *cp) -{ - register u_int i; - - if (!TTEST2(*cp, 1)) - return (NULL); - i = *cp++; - if (fn_printn(cp, i, snapend)) - return (NULL); - return (cp + i); -} - -/* http://www.iana.org/assignments/dns-parameters */ -struct tok ns_type2str[] = { - { T_A, "A" }, /* RFC 1035 */ - { T_NS, "NS" }, /* RFC 1035 */ - { T_MD, "MD" }, /* RFC 1035 */ - { T_MF, "MF" }, /* RFC 1035 */ - { T_CNAME, "CNAME" }, /* RFC 1035 */ - { T_SOA, "SOA" }, /* RFC 1035 */ - { T_MB, "MB" }, /* RFC 1035 */ - { T_MG, "MG" }, /* RFC 1035 */ - { T_MR, "MR" }, /* RFC 1035 */ - { T_NULL, "NULL" }, /* RFC 1035 */ - { T_WKS, "WKS" }, /* RFC 1035 */ - { T_PTR, "PTR" }, /* RFC 1035 */ - { T_HINFO, "HINFO" }, /* RFC 1035 */ - { T_MINFO, "MINFO" }, /* RFC 1035 */ - { T_MX, "MX" }, /* RFC 1035 */ - { T_TXT, "TXT" }, /* RFC 1035 */ - { T_RP, "RP" }, /* RFC 1183 */ - { T_AFSDB, "AFSDB" }, /* RFC 1183 */ - { T_X25, "X25" }, /* RFC 1183 */ - { T_ISDN, "ISDN" }, /* RFC 1183 */ - { T_RT, "RT" }, /* RFC 1183 */ - { T_NSAP, "NSAP" }, /* RFC 1706 */ - { T_NSAP_PTR, "NSAP_PTR" }, - { T_SIG, "SIG" }, /* RFC 2535 */ - { T_KEY, "KEY" }, /* RFC 2535 */ - { T_PX, "PX" }, /* RFC 2163 */ - { T_GPOS, "GPOS" }, /* RFC 1712 */ - { T_AAAA, "AAAA" }, /* RFC 1886 */ - { T_LOC, "LOC" }, /* RFC 1876 */ - { T_NXT, "NXT" }, /* RFC 2535 */ - { T_EID, "EID" }, /* Nimrod */ - { T_NIMLOC, "NIMLOC" }, /* Nimrod */ - { T_SRV, "SRV" }, /* RFC 2782 */ - { T_ATMA, "ATMA" }, /* ATM Forum */ - { T_NAPTR, "NAPTR" }, /* RFC 2168, RFC 2915 */ - { T_KX, "KX" }, /* RFC 2230 */ - { T_CERT, "CERT" }, /* RFC 2538 */ - { T_A6, "A6" }, /* RFC 2874 */ - { T_DNAME, "DNAME" }, /* RFC 2672 */ - { T_SINK, "SINK" }, - { T_OPT, "OPT" }, /* RFC 2671 */ - { T_APL, "APL" }, /* RFC 3123 */ - { T_DS, "DS" }, /* RFC 4034 */ - { T_SSHFP, "SSHFP" }, /* RFC 4255 */ - { T_IPSECKEY, "IPSECKEY" }, /* RFC 4025 */ - { T_RRSIG, "RRSIG" }, /* RFC 4034 */ - { T_NSEC, "NSEC" }, /* RFC 4034 */ - { T_DNSKEY, "DNSKEY" }, /* RFC 4034 */ - { T_SPF, "SPF" }, /* RFC-schlitt-spf-classic-02.txt */ - { T_UINFO, "UINFO" }, - { T_UID, "UID" }, - { T_GID, "GID" }, - { T_UNSPEC, "UNSPEC" }, - { T_UNSPECA, "UNSPECA" }, - { T_TKEY, "TKEY" }, /* RFC 2930 */ - { T_TSIG, "TSIG" }, /* RFC 2845 */ - { T_IXFR, "IXFR" }, /* RFC 1995 */ - { T_AXFR, "AXFR" }, /* RFC 1035 */ - { T_MAILB, "MAILB" }, /* RFC 1035 */ - { T_MAILA, "MAILA" }, /* RFC 1035 */ - { T_ANY, "ANY" }, - { 0, NULL } -}; - -struct tok ns_class2str[] = { - { C_IN, "IN" }, /* Not used */ - { C_CHAOS, "CHAOS" }, - { C_HS, "HS" }, - { C_ANY, "ANY" }, - { 0, NULL } -}; - -/* print a query */ -static const u_char * -ns_qprint(register const u_char *cp, register const u_char *bp, int is_mdns) -{ - register const u_char *np = cp; - register u_int i, class; - - cp = ns_nskip(cp); - - if (cp == NULL || !TTEST2(*cp, 4)) - return(NULL); - - /* print the qtype */ - i = EXTRACT_16BITS(cp); - cp += 2; - printf(" %s", tok2str(ns_type2str, "Type%d", i)); - /* print the qclass (if it's not IN) */ - i = EXTRACT_16BITS(cp); - cp += 2; - if (is_mdns) - class = (i & ~C_QU); - else - class = i; - if (class != C_IN) - printf(" %s", tok2str(ns_class2str, "(Class %d)", class)); - if (is_mdns) { - if (i & C_QU) - printf(" (QU)"); - else - printf(" (QM)"); - } - - fputs("? ", stdout); - cp = ns_nprint(np, bp); - return(cp ? cp + 4 : NULL); -} - -/* print a reply */ -static const u_char * -ns_rprint(register const u_char *cp, register const u_char *bp, int is_mdns) -{ - register u_int i, class, opt_flags = 0; - register u_short typ, len; - register const u_char *rp; - - if (vflag) { - putchar(' '); - if ((cp = ns_nprint(cp, bp)) == NULL) - return NULL; - } else - cp = ns_nskip(cp); - - if (cp == NULL || !TTEST2(*cp, 10)) - return (snapend); - - /* print the type/qtype */ - typ = EXTRACT_16BITS(cp); - cp += 2; - /* print the class (if it's not IN and the type isn't OPT) */ - i = EXTRACT_16BITS(cp); - cp += 2; - if (is_mdns) - class = (i & ~C_CACHE_FLUSH); - else - class = i; - if (class != C_IN && typ != T_OPT) - printf(" %s", tok2str(ns_class2str, "(Class %d)", class)); - if (is_mdns) { - if (i & C_CACHE_FLUSH) - printf(" (Cache flush)"); - } - - /* ignore ttl */ - cp += 2; - /* if T_OPT, save opt_flags */ - if (typ == T_OPT) - opt_flags = EXTRACT_16BITS(cp); - /* ignore rest of ttl */ - cp += 2; - - len = EXTRACT_16BITS(cp); - cp += 2; - - rp = cp + len; - - printf(" %s", tok2str(ns_type2str, "Type%d", typ)); - if (rp > snapend) - return(NULL); - - switch (typ) { - case T_A: - if (!TTEST2(*cp, sizeof(struct in_addr))) - return(NULL); - printf(" %s", ipaddr_string(cp)); - break; - - case T_NS: - case T_CNAME: - case T_PTR: -#ifdef T_DNAME - case T_DNAME: -#endif - putchar(' '); - if (ns_nprint(cp, bp) == NULL) - return(NULL); - break; - - case T_SOA: - if (!vflag) - break; - putchar(' '); - if ((cp = ns_nprint(cp, bp)) == NULL) - return(NULL); - putchar(' '); - if ((cp = ns_nprint(cp, bp)) == NULL) - return(NULL); - if (!TTEST2(*cp, 5 * 4)) - return(NULL); - printf(" %u", EXTRACT_32BITS(cp)); - cp += 4; - printf(" %u", EXTRACT_32BITS(cp)); - cp += 4; - printf(" %u", EXTRACT_32BITS(cp)); - cp += 4; - printf(" %u", EXTRACT_32BITS(cp)); - cp += 4; - printf(" %u", EXTRACT_32BITS(cp)); - cp += 4; - break; - case T_MX: - putchar(' '); - if (!TTEST2(*cp, 2)) - return(NULL); - if (ns_nprint(cp + 2, bp) == NULL) - return(NULL); - printf(" %d", EXTRACT_16BITS(cp)); - break; - - case T_TXT: - while (cp < rp) { - printf(" \""); - cp = ns_cprint(cp); - if (cp == NULL) - return(NULL); - putchar('"'); - } - break; - - case T_SRV: - putchar(' '); - if (!TTEST2(*cp, 6)) - return(NULL); - if (ns_nprint(cp + 6, bp) == NULL) - return(NULL); - printf(":%d %d %d", EXTRACT_16BITS(cp + 4), - EXTRACT_16BITS(cp), EXTRACT_16BITS(cp + 2)); - break; - -#ifdef INET6 - case T_AAAA: - if (!TTEST2(*cp, sizeof(struct in6_addr))) - return(NULL); - printf(" %s", ip6addr_string(cp)); - break; - - case T_A6: - { - struct in6_addr a; - int pbit, pbyte; - - if (!TTEST2(*cp, 1)) - return(NULL); - pbit = *cp; - pbyte = (pbit & ~7) / 8; - if (pbit > 128) { - printf(" %u(bad plen)", pbit); - break; - } else if (pbit < 128) { - if (!TTEST2(*(cp + 1), sizeof(a) - pbyte)) - return(NULL); - memset(&a, 0, sizeof(a)); - memcpy(&a.s6_addr[pbyte], cp + 1, sizeof(a) - pbyte); - printf(" %u %s", pbit, ip6addr_string(&a)); - } - if (pbit > 0) { - putchar(' '); - if (ns_nprint(cp + 1 + sizeof(a) - pbyte, bp) == NULL) - return(NULL); - } - break; - } -#endif /*INET6*/ - - case T_OPT: - printf(" UDPsize=%u", class); - if (opt_flags & 0x8000) - printf(" OK"); - break; - - case T_UNSPECA: /* One long string */ - if (!TTEST2(*cp, len)) - return(NULL); - if (fn_printn(cp, len, snapend)) - return(NULL); - break; - - case T_TSIG: - { - if (cp + len > snapend) - return(NULL); - if (!vflag) - break; - putchar(' '); - if ((cp = ns_nprint(cp, bp)) == NULL) - return(NULL); - cp += 6; - if (!TTEST2(*cp, 2)) - return(NULL); - printf(" fudge=%u", EXTRACT_16BITS(cp)); - cp += 2; - if (!TTEST2(*cp, 2)) - return(NULL); - printf(" maclen=%u", EXTRACT_16BITS(cp)); - cp += 2 + EXTRACT_16BITS(cp); - if (!TTEST2(*cp, 2)) - return(NULL); - printf(" origid=%u", EXTRACT_16BITS(cp)); - cp += 2; - if (!TTEST2(*cp, 2)) - return(NULL); - printf(" error=%u", EXTRACT_16BITS(cp)); - cp += 2; - if (!TTEST2(*cp, 2)) - return(NULL); - printf(" otherlen=%u", EXTRACT_16BITS(cp)); - cp += 2; - } - } - return (rp); /* XXX This isn't always right */ -} - -void -ns_print(register const u_char *bp, u_int length, int is_mdns) -{ - register const HEADER *np; - register int qdcount, ancount, nscount, arcount; - register const u_char *cp; - u_int16_t b2; - - np = (const HEADER *)bp; - TCHECK(*np); - /* get the byte-order right */ - qdcount = EXTRACT_16BITS(&np->qdcount); - ancount = EXTRACT_16BITS(&np->ancount); - nscount = EXTRACT_16BITS(&np->nscount); - arcount = EXTRACT_16BITS(&np->arcount); - - if (DNS_QR(np)) { - /* this is a response */ - printf("%d%s%s%s%s%s%s", - EXTRACT_16BITS(&np->id), - ns_ops[DNS_OPCODE(np)], - ns_resp[DNS_RCODE(np)], - DNS_AA(np)? "*" : "", - DNS_RA(np)? "" : "-", - DNS_TC(np)? "|" : "", - DNS_AD(np)? "$" : ""); - - if (qdcount != 1) - printf(" [%dq]", qdcount); - /* Print QUESTION section on -vv */ - cp = (const u_char *)(np + 1); - while (qdcount--) { - if (qdcount < EXTRACT_16BITS(&np->qdcount) - 1) - putchar(','); - if (vflag > 1) { - fputs(" q:", stdout); - if ((cp = ns_qprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } else { - if ((cp = ns_nskip(cp)) == NULL) - goto trunc; - cp += 4; /* skip QTYPE and QCLASS */ - } - } - printf(" %d/%d/%d", ancount, nscount, arcount); - if (ancount--) { - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (cp < snapend && ancount--) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (ancount > 0) - goto trunc; - /* Print NS and AR sections on -vv */ - if (vflag > 1) { - if (cp < snapend && nscount--) { - fputs(" ns:", stdout); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (cp < snapend && nscount--) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (nscount > 0) - goto trunc; - if (cp < snapend && arcount--) { - fputs(" ar:", stdout); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (cp < snapend && arcount--) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (arcount > 0) - goto trunc; - } - } - else { - /* this is a request */ - printf("%d%s%s%s", EXTRACT_16BITS(&np->id), ns_ops[DNS_OPCODE(np)], - DNS_RD(np) ? "+" : "", - DNS_CD(np) ? "%" : ""); - - /* any weirdness? */ - b2 = EXTRACT_16BITS(((u_short *)np)+1); - if (b2 & 0x6cf) - printf(" [b2&3=0x%x]", b2); - - if (DNS_OPCODE(np) == IQUERY) { - if (qdcount) - printf(" [%dq]", qdcount); - if (ancount != 1) - printf(" [%da]", ancount); - } - else { - if (ancount) - printf(" [%da]", ancount); - if (qdcount != 1) - printf(" [%dq]", qdcount); - } - if (nscount) - printf(" [%dn]", nscount); - if (arcount) - printf(" [%dau]", arcount); - - cp = (const u_char *)(np + 1); - if (qdcount--) { - cp = ns_qprint(cp, (const u_char *)np, is_mdns); - if (!cp) - goto trunc; - while (cp < snapend && qdcount--) { - cp = ns_qprint((const u_char *)cp, - (const u_char *)np, - is_mdns); - if (!cp) - goto trunc; - } - } - if (qdcount > 0) - goto trunc; - - /* Print remaining sections on -vv */ - if (vflag > 1) { - if (ancount--) { - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (cp < snapend && ancount--) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (ancount > 0) - goto trunc; - if (cp < snapend && nscount--) { - fputs(" ns:", stdout); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (nscount-- && cp < snapend) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (nscount > 0) - goto trunc; - if (cp < snapend && arcount--) { - fputs(" ar:", stdout); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - while (cp < snapend && arcount--) { - putchar(','); - if ((cp = ns_rprint(cp, bp, is_mdns)) == NULL) - goto trunc; - } - } - if (arcount > 0) - goto trunc; - } - } - printf(" (%d)", length); - return; - - trunc: - printf("[|domain]"); - return; -} |