290 lines
7.0 KiB
C
290 lines
7.0 KiB
C
/*
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* Copyright (c) 1988-1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: print-domain.c,v 1.1 1993/11/14 21:20:36 deraadt Exp $
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*/
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#ifndef lint
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static char rcsid[] =
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"@(#) Header: print-domain.c,v 1.16 92/05/25 14:28:59 mccanne Exp (LBL)";
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#endif
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcpip.h>
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#include <arpa/nameser.h>
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#include "interface.h"
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#include "addrtoname.h"
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static char *ns_ops[] = {
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"", " inv_q", " stat", " op3", " op4", " op5", " op6", " op7",
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" op8", " updataA", " updateD", " updateDA",
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" updateM", " updateMA", " zoneInit", " zoneRef",
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};
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static char *ns_resp[] = {
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"", " FormErr", " ServFail", " NXDomain",
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" NotImp", " Refused", " Resp6", " Resp7",
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" Resp8", " Resp9", " Resp10", " Resp11",
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" Resp12", " Resp13", " Resp14", " NoChange",
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};
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/* skip over a domain name */
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static u_char *
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ns_nskip(cp)
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register u_char *cp;
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{
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register u_char i;
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if (((i = *cp++) & 0xc0) == 0xc0)
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return (cp + 1);
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while (i) {
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cp += i;
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i = *cp++;
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}
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return (cp);
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}
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/* print a domain name */
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static void
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ns_nprint(cp, bp, ep)
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register u_char *cp;
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register u_char *bp;
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register u_char *ep;
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{
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register u_int i;
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putchar(' ');
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if (i = *cp++)
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while (i && cp < ep) {
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if ((i & 0xc0) == 0xc0) {
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cp = bp + (((i << 8) | *cp) & 0x3fff);
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i = *cp++;
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continue;
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}
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do {
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putchar(*cp++);
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} while (--i);
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putchar('.');
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i = *cp++;
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}
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else
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putchar('.');
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}
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/* print a query */
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static void
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ns_qprint(cp, bp, ep)
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register u_char *cp;
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register u_char *bp;
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register u_char *ep;
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{
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u_char *np = cp;
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register u_int i;
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cp = ns_nskip(cp);
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if (cp + 4 > ep)
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return;
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/* print the qtype and qclass (if it's not IN) */
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i = *cp++ << 8;
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switch (i |= *cp++) {
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case T_A: printf(" A"); break;
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case T_NS: printf(" NS"); break;
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case T_MD: printf(" MD"); break;
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case T_MF: printf(" MF"); break;
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case T_CNAME: printf(" CNAME"); break;
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case T_SOA: printf(" SOA"); break;
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case T_MB: printf(" MB"); break;
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case T_MG: printf(" MG"); break;
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case T_MR: printf(" MR"); break;
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case T_NULL: printf(" NULL"); break;
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case T_WKS: printf(" WKS"); break;
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case T_PTR: printf(" PTR"); break;
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case T_HINFO: printf(" HINFO"); break;
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case T_MINFO: printf(" MINFO"); break;
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case T_MX: printf(" MX"); break;
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case T_UINFO: printf(" UINFO"); break;
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case T_UID: printf(" UID"); break;
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case T_GID: printf(" GID"); break;
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#ifdef T_UNSPEC
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case T_UNSPEC: printf(" UNSPEC"); break;
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#endif
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case T_AXFR: printf(" AXFR"); break;
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case T_MAILB: printf(" MAILB"); break;
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case T_MAILA: printf(" MAILA"); break;
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case T_ANY: printf(" ANY"); break;
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default: printf(" Type%d", i); break;
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}
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i = *cp++ << 8;
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if ((i |= *cp++) != C_IN)
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if (i == C_ANY)
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printf("(c_any)");
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else
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printf("(Class %d)", i);
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putchar('?');
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ns_nprint(np, bp, ep);
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}
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/* print a reply */
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static void
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ns_rprint(cp, bp, ep)
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register u_char *cp;
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register u_char *bp;
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register u_char *ep;
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{
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register u_int i;
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u_short typ;
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cp = ns_nskip(cp);
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if (cp + 10 > ep)
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return;
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/* print the type/qtype and class (if it's not IN) */
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typ = *cp++ << 8;
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typ |= *cp++;
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i = *cp++ << 8;
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if ((i |= *cp++) != C_IN)
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if (i == C_ANY)
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printf("(c_any)");
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else
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printf("(Class %d)", i);
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/* ignore ttl & len */
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cp += 6;
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switch (typ) {
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case T_A: printf(" A %s", ipaddr_string(cp)); break;
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case T_NS: printf(" NS"); ns_nprint(cp, bp, ep); break;
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case T_MD: printf(" MD"); break;
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case T_MF: printf(" MF"); break;
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case T_CNAME: printf(" CNAME"); ns_nprint(cp, bp, ep); break;
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case T_SOA: printf(" SOA"); break;
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case T_MB: printf(" MB"); break;
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case T_MG: printf(" MG"); break;
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case T_MR: printf(" MR"); break;
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case T_NULL: printf(" NULL"); break;
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case T_WKS: printf(" WKS"); break;
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case T_PTR: printf(" PTR"); ns_nprint(cp, bp, ep); break;
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case T_HINFO: printf(" HINFO"); break;
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case T_MINFO: printf(" MINFO"); break;
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case T_MX: printf(" MX"); ns_nprint(cp+2, bp, ep);
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#ifndef TCPDUMP_ALIGN
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printf(" %d", *(short *)cp);
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#else
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{
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u_short x = *cp | cp[1] << 8;
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printf(" %d", ntohs(x));
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}
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#endif
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break;
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case T_UINFO: printf(" UINFO"); break;
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case T_UID: printf(" UID"); break;
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case T_GID: printf(" GID"); break;
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#ifdef T_UNSPEC
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case T_UNSPEC: printf(" UNSPEC"); break;
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#endif
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case T_AXFR: printf(" AXFR"); break;
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case T_MAILB: printf(" MAILB"); break;
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case T_MAILA: printf(" MAILA"); break;
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case T_ANY: printf(" ANY"); break;
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default: printf(" Type%d", typ); break;
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}
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}
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void
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ns_print(np, length)
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register HEADER *np;
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int length;
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{
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u_char *ep = (u_char *)snapend;
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/* get the byte-order right */
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NTOHS(np->id);
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NTOHS(np->qdcount);
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NTOHS(np->ancount);
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NTOHS(np->nscount);
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NTOHS(np->arcount);
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if (np->qr) {
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/* this is a response */
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printf(" %d%s%s%s%s%s",
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np->id,
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ns_ops[np->opcode],
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ns_resp[np->rcode],
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np->aa? "*" : "",
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np->ra? "" : "-",
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np->tc? "|" : "");
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if (np->qdcount != 1)
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printf(" [%dq]", np->qdcount);
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printf(" %d/%d/%d", np->ancount, np->nscount, np->arcount);
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if (np->ancount)
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ns_rprint(ns_nskip((u_char *)(np + 1)) + 4,
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(u_char *)np, ep);
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}
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else {
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/* this is a request */
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printf(" %d%s%s",
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np->id,
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ns_ops[np->opcode],
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np->rd? "+" : "");
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/* any weirdness? */
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if (*(((u_short *)np)+1) & htons(0x6ff))
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printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
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if (np->opcode == IQUERY) {
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if (np->qdcount)
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printf(" [%dq]", np->qdcount);
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if (np->ancount != 1)
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printf(" [%da]", np->ancount);
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}
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else {
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if (np->ancount)
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printf(" [%da]", np->ancount);
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if (np->qdcount != 1)
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printf(" [%dq]", np->qdcount);
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}
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if (np->nscount)
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printf(" [%dn]", np->nscount);
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if (np->arcount)
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printf(" [%dau]", np->arcount);
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ns_qprint((u_char *)(np + 1), (u_char *)np, ep);
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}
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printf(" (%d)", length);
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}
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