/* $NetBSD: res_debug.c,v 1.13 2012/06/25 22:32:45 abs Exp $ */
/*
* Portions Copyright ( C ) 2004 , 2005 , 2008 , 2009 Internet Systems Consortium , Inc . ( " ISC " )
* Portions Copyright ( C ) 1996 - 2003 Internet Software Consortium .
*
* Permission to use , copy , modify , and / or distribute this software for any
* purpose with or without fee is hereby granted , provided that the above
* copyright notice and this permission notice appear in all copies .
*
* THE SOFTWARE IS PROVIDED " AS IS " AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS . IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL , DIRECT ,
* INDIRECT , OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE , DATA OR PROFITS , WHETHER IN AN ACTION OF CONTRACT , NEGLIGENCE
* OR OTHER TORTIOUS ACTION , ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE .
*/
/*
* Copyright ( c ) 1985
* 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 the following conditions
* are met :
* 1 . Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* 2 . Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution .
* 3 . All advertising materials mentioning features or use of this software
* must display the following acknowledgement :
* This product includes software developed by the University of
* California , Berkeley and its contributors .
* 4 . 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 BY THE REGENTS AND CONTRIBUTORS ` ` AS IS ' ' AND
* ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED . IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT
* LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE .
*/
/*
* Portions Copyright ( c ) 1993 by Digital Equipment Corporation .
*
* Permission to use , copy , modify , and distribute this software for any
* purpose with or without fee is hereby granted , provided that the above
* copyright notice and this permission notice appear in all copies , and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific , written prior permission .
*
* THE SOFTWARE IS PROVIDED " AS IS " AND DIGITAL EQUIPMENT CORP . DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE , INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS . IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL , DIRECT , INDIRECT , OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE , DATA OR
* PROFITS , WHETHER IN AN ACTION OF CONTRACT , NEGLIGENCE OR OTHER TORTIOUS
* ACTION , ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE .
*/
/*
* Portions Copyright ( c ) 1995 by International Business Machines , Inc .
*
* International Business Machines , Inc . ( hereinafter called IBM ) grants
* permission under its copyrights to use , copy , modify , and distribute this
* Software with or without fee , provided that the above copyright notice and
* all paragraphs of this notice appear in all copies , and that the name of IBM
* not be used in connection with the marketing of any product incorporating
* the Software or modifications thereof , without specific , written prior
* permission .
*
* To the extent it has a right to do so , IBM grants an immunity from suit
* under its patents , if any , for the use , sale or manufacture of products to
* the extent that such products are used for performing Domain Name System
* dynamic updates in TCP / IP networks by means of the Software . No immunity is
* granted for any product per se or for any other function of any product .
*
* THE SOFTWARE IS PROVIDED " AS IS " , AND IBM DISCLAIMS ALL WARRANTIES ,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE . IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL ,
* DIRECT , INDIRECT , OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE , EVEN
* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES .
*/
#include <sys/cdefs.h>
#if defined (LIBC_SCCS) && !defined (lint)
#ifdef notdef
static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93" ;
static const char rcsid[] = "Id: res_debug.c,v 1.19 2009/02/26 11:20:20 tbox Exp" ;
#else
__RCSID("$NetBSD: res_debug.c,v 1.13 2012/06/25 22:32:45 abs Exp $" );
#endif
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <netdb.h>
#include "resolv_private.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
extern const char * const _res_sectioncodes[];
__LIBC_HIDDEN__ const char * const _res_opcodes[] = {
"QUERY" ,
"IQUERY" ,
"CQUERYM" ,
"CQUERYU" , /* experimental */
"NOTIFY" , /* experimental */
"UPDATE" ,
"6" ,
"7" ,
"8" ,
"9" ,
"10" ,
"11" ,
"12" ,
"13" ,
"ZONEINIT" ,
"ZONEREF" ,
};
static void
do_section(const res_state statp,
ns_msg *handle, ns_sect section,
int pflag, FILE *file)
{
int n, sflag, rrnum;
int buflen = 2048 ;
char *buf;
ns_opcode opcode;
ns_rr rr;
/*
* Print answer records .
*/
sflag = (int )(statp->pfcode & pflag);
if (statp->pfcode && !sflag)
return ;
buf = malloc((size_t)buflen);
if (buf == NULL) {
fprintf(file, ";; memory allocation failure\n" );
return ;
}
opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode);
rrnum = 0 ;
for (;;) {
if (ns_parserr(handle, section, rrnum, &rr)) {
if (errno != ENODEV)
fprintf(file, ";; ns_parserr: %s\n" ,
strerror(errno));
else if (rrnum > 0 && sflag != 0 &&
(statp->pfcode & RES_PRF_HEAD1))
putc('\n' , file);
goto cleanup;
}
if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1))
fprintf(file, ";; %s SECTION:\n" ,
p_section(section, opcode));
if (section == ns_s_qd)
fprintf(file, ";;\t%s, type = %s, class = %s\n" ,
ns_rr_name(rr),
p_type(ns_rr_type(rr)),
p_class(ns_rr_class(rr)));
else if (section == ns_s_ar && ns_rr_type(rr) == ns_t_opt) {
size_t rdatalen, ttl;
uint16_t optcode, optlen;
rdatalen = ns_rr_rdlen(rr);
ttl = ns_rr_ttl(rr);
fprintf(file,
"; EDNS: version: %zu, udp=%u, flags=%04zx\n" ,
(ttl>>16 )&0 xff, ns_rr_class(rr), ttl&0 xffff);
while (rdatalen >= 4 ) {
const u_char *cp = ns_rr_rdata(rr);
int i;
GETSHORT(optcode, cp);
GETSHORT(optlen, cp);
if (optcode == NS_OPT_NSID) {
fputs("; NSID: " , file);
if (optlen == 0 ) {
fputs("; NSID\n" , file);
} else {
fputs("; NSID: " , file);
for (i = 0 ; i < optlen; i++)
fprintf(file, "%02x " ,
cp[i]);
fputs(" (" ,file);
for (i = 0 ; i < optlen; i++)
fprintf(file, "%c" ,
isprint(cp[i])?
cp[i] : '.' );
fputs(")\n" , file);
}
} else {
if (optlen == 0 ) {
fprintf(file, "; OPT=%u\n" ,
optcode);
} else {
fprintf(file, "; OPT=%u: " ,
optcode);
for (i = 0 ; i < optlen; i++)
fprintf(file, "%02x " ,
cp[i]);
fputs(" (" ,file);
for (i = 0 ; i < optlen; i++)
fprintf(file, "%c" ,
isprint(cp[i]) ?
cp[i] : '.' );
fputs(")\n" , file);
}
}
rdatalen -= 4 + optlen;
}
} else {
n = ns_sprintrr(handle, &rr, NULL, NULL,
buf, (u_int)buflen);
if (n < 0 ) {
if (errno == ENOSPC) {
free(buf);
buf = NULL;
if (buflen < 131072 )
buf = malloc((size_t)(buflen += 1024 ));
if (buf == NULL) {
fprintf(file,
";; memory allocation failure\n" );
return ;
}
continue ;
}
fprintf(file, ";; ns_sprintrr: %s\n" ,
strerror(errno));
goto cleanup;
}
fputs(buf, file);
fputc('\n' , file);
}
rrnum++;
}
cleanup:
if (buf != NULL)
free(buf);
}
/*
* Print the contents of a query .
* This is intended to be primarily a debugging routine .
*/
void
res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) {
ns_msg handle;
int qdcount, ancount, nscount, arcount;
u_int opcode, rcode, id;
if (ns_initparse(msg, len, &handle) < 0 ) {
fprintf(file, ";; ns_initparse: %s\n" , strerror(errno));
return ;
}
opcode = ns_msg_getflag(handle, ns_f_opcode);
rcode = ns_msg_getflag(handle, ns_f_rcode);
id = ns_msg_id(handle);
qdcount = ns_msg_count(handle, ns_s_qd);
ancount = ns_msg_count(handle, ns_s_an);
nscount = ns_msg_count(handle, ns_s_ns);
arcount = ns_msg_count(handle, ns_s_ar);
/*
* Print header fields .
*/
if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode)
fprintf(file,
";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n" ,
_res_opcodes[opcode], p_rcode((int )rcode), id);
if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX))
putc(';' , file);
if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) {
fprintf(file, "; flags:" );
if (ns_msg_getflag(handle, ns_f_qr))
fprintf(file, " qr" );
if (ns_msg_getflag(handle, ns_f_aa))
fprintf(file, " aa" );
if (ns_msg_getflag(handle, ns_f_tc))
fprintf(file, " tc" );
if (ns_msg_getflag(handle, ns_f_rd))
fprintf(file, " rd" );
if (ns_msg_getflag(handle, ns_f_ra))
fprintf(file, " ra" );
if (ns_msg_getflag(handle, ns_f_z))
fprintf(file, " ??" );
if (ns_msg_getflag(handle, ns_f_ad))
fprintf(file, " ad" );
if (ns_msg_getflag(handle, ns_f_cd))
fprintf(file, " cd" );
}
if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) {
fprintf(file, "; %s: %d" ,
p_section(ns_s_qd, (int )opcode), qdcount);
fprintf(file, ", %s: %d" ,
p_section(ns_s_an, (int )opcode), ancount);
fprintf(file, ", %s: %d" ,
p_section(ns_s_ns, (int )opcode), nscount);
fprintf(file, ", %s: %d" ,
p_section(ns_s_ar, (int )opcode), arcount);
}
if ((!statp->pfcode) || (statp->pfcode &
(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
putc('\n' ,file);
}
/*
* Print the various sections .
*/
do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file);
do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file);
do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file);
do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file);
if (qdcount == 0 && ancount == 0 &&
nscount == 0 && arcount == 0 )
putc('\n' , file);
}
const u_char *
p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) {
char name[MAXDNAME];
int n;
if ((n = dn_expand(msg, msg + len, cp, name, (int )sizeof name)) < 0 )
return (NULL);
if (name[0 ] == '\0' )
putc('.' , file);
else
fputs(name, file);
return (cp + n);
}
const u_char *
p_cdname(const u_char *cp, const u_char *msg, FILE *file) {
return (p_cdnname(cp, msg, PACKETSZ, file));
}
/* Return a fully-qualified domain name from a compressed name (with
length supplied). */
const u_char *
p_fqnname(const u_char *cp, const u_char *msg, int msglen, char *name,
int namelen)
{
int n;
size_t newlen;
if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0 )
return (NULL);
newlen = strlen(name);
if (newlen == 0 || name[newlen - 1 ] != '.' ) {
if ((int )newlen + 1 >= namelen) /* Lack space for final dot */
return (NULL);
else
strcpy(name + newlen, "." );
}
return (cp + n);
}
/* XXX: the rest of these functions need to become length-limited, too. */
const u_char *
p_fqname(const u_char *cp, const u_char *msg, FILE *file) {
char name[MAXDNAME];
const u_char *n;
n = p_fqnname(cp, msg, MAXCDNAME, name, (int )sizeof name);
if (n == NULL)
return (NULL);
fputs(name, file);
return (n);
}
/*
* Names of RR classes and qclasses . Classes and qclasses are the same , except
* that C_ANY is a qclass but not a class . ( You can ask for records of class
* C_ANY , but you can ' t have any records of that class in the database . )
*/
const struct res_sym __p_class_syms[] = {
{C_IN, "IN" , (char *)0 },
{C_CHAOS, "CH" , (char *)0 },
{C_CHAOS, "CHAOS" , (char *)0 },
{C_HS, "HS" , (char *)0 },
{C_HS, "HESIOD" , (char *)0 },
{C_ANY, "ANY" , (char *)0 },
{C_NONE, "NONE" , (char *)0 },
{C_IN, (char *)0 , (char *)0 }
};
/*
* Names of message sections .
*/
static const struct res_sym __p_default_section_syms[] = {
{ns_s_qd, "QUERY" , (char *)0 },
{ns_s_an, "ANSWER" , (char *)0 },
{ns_s_ns, "AUTHORITY" , (char *)0 },
{ns_s_ar, "ADDITIONAL" , (char *)0 },
{0 , (char *)0 , (char *)0 }
};
static const struct res_sym __p_update_section_syms[] = {
{S_ZONE, "ZONE" , (char *)0 },
{S_PREREQ, "PREREQUISITE" , (char *)0 },
{S_UPDATE, "UPDATE" , (char *)0 },
{S_ADDT, "ADDITIONAL" , (char *)0 },
{0 , (char *)0 , (char *)0 }
};
const struct res_sym __p_key_syms[] = {
{NS_ALG_MD5RSA, "RSA" , "RSA KEY with MD5 hash" },
{NS_ALG_DH, "DH" , "Diffie Hellman" },
{NS_ALG_DSA, "DSA" , "Digital Signature Algorithm" },
{NS_ALG_EXPIRE_ONLY, "EXPIREONLY" , "No algorithm" },
{NS_ALG_PRIVATE_OID, "PRIVATE" , "Algorithm obtained from OID" },
{0 , NULL, NULL}
};
const struct res_sym __p_cert_syms[] = {
{cert_t_pkix, "PKIX" , "PKIX (X.509v3) Certificate" },
{cert_t_spki, "SPKI" , "SPKI certificate" },
{cert_t_pgp, "PGP" , "PGP certificate" },
{cert_t_url, "URL" , "URL Private" },
{cert_t_oid, "OID" , "OID Private" },
{0 , NULL, NULL}
};
/*
* Names of RR types and qtypes . Types and qtypes are the same , except
* that T_ANY is a qtype but not a type . ( You can ask for records of type
* T_ANY , but you can ' t have any records of that type in the database . )
*/
const struct res_sym __p_type_syms[] = {
{ns_t_a, "A" , "address" },
{ns_t_ns, "NS" , "name server" },
{ns_t_md, "MD" , "mail destination (deprecated)" },
{ns_t_mf, "MF" , "mail forwarder (deprecated)" },
{ns_t_cname, "CNAME" , "canonical name" },
{ns_t_soa, "SOA" , "start of authority" },
{ns_t_mb, "MB" , "mailbox" },
{ns_t_mg, "MG" , "mail group member" },
{ns_t_mr, "MR" , "mail rename" },
{ns_t_null, "NULL" , "null" },
{ns_t_wks, "WKS" , "well-known service (deprecated)" },
{ns_t_ptr, "PTR" , "domain name pointer" },
{ns_t_hinfo, "HINFO" , "host information" },
{ns_t_minfo, "MINFO" , "mailbox information" },
{ns_t_mx, "MX" , "mail exchanger" },
{ns_t_txt, "TXT" , "text" },
{ns_t_rp, "RP" , "responsible person" },
{ns_t_afsdb, "AFSDB" , "DCE or AFS server" },
{ns_t_x25, "X25" , "X25 address" },
{ns_t_isdn, "ISDN" , "ISDN address" },
{ns_t_rt, "RT" , "router" },
{ns_t_nsap, "NSAP" , "nsap address" },
{ns_t_nsap_ptr, "NSAP_PTR" , "domain name pointer" },
{ns_t_sig, "SIG" , "signature" },
{ns_t_key, "KEY" , "key" },
{ns_t_px, "PX" , "mapping information" },
{ns_t_gpos, "GPOS" , "geographical position (withdrawn)" },
{ns_t_aaaa, "AAAA" , "IPv6 address" },
{ns_t_loc, "LOC" , "location" },
{ns_t_nxt, "NXT" , "next valid name (unimplemented)" },
{ns_t_eid, "EID" , "endpoint identifier (unimplemented)" },
{ns_t_nimloc, "NIMLOC" , "NIMROD locator (unimplemented)" },
{ns_t_srv, "SRV" , "server selection" },
{ns_t_atma, "ATMA" , "ATM address (unimplemented)" },
{ns_t_naptr, "NAPTR" , "naptr" },
{ns_t_kx, "KX" , "key exchange" },
{ns_t_cert, "CERT" , "certificate" },
{ns_t_a6, "A" , "IPv6 address (experminental)" },
{ns_t_dname, "DNAME" , "non-terminal redirection" },
{ns_t_opt, "OPT" , "opt" },
{ns_t_apl, "apl" , "apl" },
{ns_t_ds, "DS" , "delegation signer" },
{ns_t_sshfp, "SSFP" , "SSH fingerprint" },
{ns_t_ipseckey, "IPSECKEY" , "IPSEC key" },
{ns_t_rrsig, "RRSIG" , "rrsig" },
{ns_t_nsec, "NSEC" , "nsec" },
{ns_t_dnskey, "DNSKEY" , "DNS key" },
{ns_t_dhcid, "DHCID" , "dynamic host configuration identifier" },
{ns_t_nsec3, "NSEC3" , "nsec3" },
{ns_t_nsec3param, "NSEC3PARAM" , "NSEC3 parameters" },
{ns_t_hip, "HIP" , "host identity protocol" },
{ns_t_spf, "SPF" , "sender policy framework" },
{ns_t_tkey, "TKEY" , "tkey" },
{ns_t_tsig, "TSIG" , "transaction signature" },
{ns_t_ixfr, "IXFR" , "incremental zone transfer" },
{ns_t_axfr, "AXFR" , "zone transfer" },
{ns_t_zxfr, "ZXFR" , "compressed zone transfer" },
{ns_t_mailb, "MAILB" , "mailbox-related data (deprecated)" },
{ns_t_maila, "MAILA" , "mail agent (deprecated)" },
{ns_t_naptr, "NAPTR" , "URN Naming Authority" },
{ns_t_kx, "KX" , "Key Exchange" },
{ns_t_cert, "CERT" , "Certificate" },
{ns_t_a6, "A6" , "IPv6 Address" },
{ns_t_dname, "DNAME" , "dname" },
{ns_t_sink, "SINK" , "Kitchen Sink (experimental)" },
{ns_t_opt, "OPT" , "EDNS Options" },
{ns_t_any, "ANY" , "\" any\"" },
{ns_t_dlv, "DLV" , "DNSSEC look-aside validation" },
{0 , NULL, NULL}
};
/*
* Names of DNS rcodes .
*/
const struct res_sym __p_rcode_syms[] = {
{ns_r_noerror, "NOERROR" , "no error" },
{ns_r_formerr, "FORMERR" , "format error" },
{ns_r_servfail, "SERVFAIL" , "server failed" },
{ns_r_nxdomain, "NXDOMAIN" , "no such domain name" },
{ns_r_notimpl, "NOTIMP" , "not implemented" },
{ns_r_refused, "REFUSED" , "refused" },
{ns_r_yxdomain, "YXDOMAIN" , "domain name exists" },
{ns_r_yxrrset, "YXRRSET" , "rrset exists" },
{ns_r_nxrrset, "NXRRSET" , "rrset doesn't exist" },
{ns_r_notauth, "NOTAUTH" , "not authoritative" },
{ns_r_notzone, "NOTZONE" , "Not in zone" },
{ns_r_max, "" , "" },
{ns_r_badsig, "BADSIG" , "bad signature" },
{ns_r_badkey, "BADKEY" , "bad key" },
{ns_r_badtime, "BADTIME" , "bad time" },
{0 , NULL, NULL}
};
int
sym_ston(const struct res_sym *syms, const char *name, int *success) {
for (; syms->name != 0 ; syms++) {
if (strcasecmp (name, syms->name) == 0 ) {
if (success)
*success = 1 ;
return (syms->number);
}
}
if (success)
*success = 0 ;
return (syms->number); /* The default value. */
}
const char *
sym_ntos(const struct res_sym *syms, int number, int *success) {
static char unname[20 ];
for (; syms->name != 0 ; syms++) {
if (number == syms->number) {
if (success)
*success = 1 ;
return (syms->name);
}
}
snprintf(unname, sizeof (unname), "%d" , number); /* XXX nonreentrant */
if (success)
*success = 0 ;
return (unname);
}
const char *
sym_ntop(const struct res_sym *syms, int number, int *success) {
static char unname[20 ];
for (; syms->name != 0 ; syms++) {
if (number == syms->number) {
if (success)
*success = 1 ;
return (syms->humanname);
}
}
snprintf(unname, sizeof (unname), "%d" , number); /* XXX nonreentrant */
if (success)
*success = 0 ;
return (unname);
}
/*
* Return a string for the type .
*/
const char *
p_type(int type) {
int success;
const char *result;
static char typebuf[20 ];
result = sym_ntos(__p_type_syms, type, &success);
if (success)
return (result);
if (type < 0 || type > 0 xffff)
return ("BADTYPE" );
snprintf(typebuf, sizeof (typebuf), "TYPE%d" , type);
return (typebuf);
}
/*
* Return a string for the type .
*/
const char *
p_section(int section, int opcode) {
const struct res_sym *symbols;
switch (opcode) {
case ns_o_update:
symbols = __p_update_section_syms;
break ;
default :
symbols = __p_default_section_syms;
break ;
}
return (sym_ntos(symbols, section, (int *)0 ));
}
/*
* Return a mnemonic for class .
*/
const char *
p_class(int class ) {
int success;
const char *result;
static char classbuf[20 ];
result = sym_ntos(__p_class_syms, class , &success);
if (success)
return (result);
if (class < 0 || class > 0 xffff)
return ("BADCLASS" );
snprintf(classbuf, sizeof (classbuf), "CLASS%d" , class );
return (classbuf);
}
/*
* Return a mnemonic for an option
*/
const char *
p_option(u_long option) {
static char nbuf[40 ];
switch (option) {
case RES_INIT: return "init" ;
case RES_DEBUG: return "debug" ;
case RES_AAONLY: return "aaonly(unimpl)" ;
case RES_USEVC: return "usevc" ;
case RES_PRIMARY: return "primry(unimpl)" ;
case RES_IGNTC: return "igntc" ;
case RES_RECURSE: return "recurs" ;
case RES_DEFNAMES: return "defnam" ;
case RES_STAYOPEN: return "styopn" ;
case RES_DNSRCH: return "dnsrch" ;
case RES_INSECURE1: return "insecure1" ;
case RES_INSECURE2: return "insecure2" ;
case RES_NOALIASES: return "noaliases" ;
case RES_USE_INET6: return "inet6" ;
#ifdef RES_USE_EDNS0 /* KAME extension */
case RES_USE_EDNS0: return "edns0" ;
#endif
#ifdef RES_USE_DNAME
case RES_USE_DNAME: return "dname" ;
#endif
#ifdef RES_USE_DNSSEC
case RES_USE_DNSSEC: return "dnssec" ;
#endif
#ifdef RES_NOTLDQUERY
case RES_NOTLDQUERY: return "no-tld-query" ;
#endif
#ifdef RES_NO_NIBBLE2
case RES_NO_NIBBLE2: return "no-nibble2" ;
#endif
/* XXX nonreentrant */
default : snprintf(nbuf, sizeof (nbuf), "?0x%lx?" , (u_long)option);
return (nbuf);
}
}
/*
* Return a mnemonic for a time to live .
*/
const char *
p_time(u_int32_t value) {
static char nbuf[40 ]; /* XXX nonreentrant */
if (ns_format_ttl((u_long)value, nbuf, sizeof nbuf) < 0 )
snprintf(nbuf, sizeof (nbuf), "%u" , value);
return (nbuf);
}
/*
* Return a string for the rcode .
*/
const char *
p_rcode(int rcode) {
return (sym_ntos(__p_rcode_syms, rcode, (int *)0 ));
}
/*
* Return a string for a res_sockaddr_union .
*/
const char *
p_sockun(union res_sockaddr_union u, char *buf, size_t size) {
char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123" ];
switch (u.sin.sin_family) {
case AF_INET:
inet_ntop(AF_INET, &u.sin.sin_addr, ret, (socklen_t)sizeof ret);
break ;
#ifdef HAS_INET6_STRUCTS
case AF_INET6:
inet_ntop(AF_INET6, &u.sin6.sin6_addr, ret, sizeof ret);
break ;
#endif
default :
snprintf(ret, sizeof (ret), "[af%d]" , u.sin.sin_family);
break ;
}
if (size > 0 U) {
strncpy(buf, ret, size - 1 );
buf[size - 1 ] = '0' ;
}
return (buf);
}
/*
* routines to convert between on - the - wire RR format and zone file format .
* Does not contain conversion to / from decimal degrees ; divide or multiply
* by 60 * 60 * 1000 for that .
*/
static const unsigned int poweroften[10 ] = {1 , 10 , 100 , 1000 , 10000 , 100000 ,
1000000 ,10000000 ,100000000 ,1000000000 };
/* takes an XeY precision/size value, returns a string representation. */
static const char *
precsize_ntoa(u_int32_t prec)
{
static char retbuf[sizeof "90000000.00" ]; /* XXX nonreentrant */
unsigned long val;
int mantissa, exponent;
mantissa = (int )((prec >> 4 ) & 0 x0f) % 10 ;
exponent = (int )((prec >> 0 ) & 0 x0f) % 10 ;
val = mantissa * poweroften[exponent];
(void ) snprintf(retbuf, sizeof (retbuf), "%lu.%.2lu" , val/100 , val%100 );
return (retbuf);
}
/* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */
static u_int8_t
precsize_aton(const char **strptr) {
unsigned int mval = 0 , cmval = 0 ;
u_int8_t retval = 0 ;
const char *cp;
int exponent;
int mantissa;
cp = *strptr;
while (isdigit((unsigned char )*cp))
mval = mval * 10 + (*cp++ - '0' );
if (*cp == '.' ) { /* centimeters */
cp++;
if (isdigit((unsigned char )*cp)) {
cmval = (*cp++ - '0' ) * 10 ;
if (isdigit((unsigned char )*cp)) {
cmval += (*cp++ - '0' );
}
}
}
cmval = (mval * 100 ) + cmval;
for (exponent = 0 ; exponent < 9 ; exponent++)
if (cmval < poweroften[exponent+1 ])
break ;
mantissa = cmval / poweroften[exponent];
if (mantissa > 9 )
mantissa = 9 ;
retval = (mantissa << 4 ) | exponent;
*strptr = cp;
return (retval);
}
/* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */
static u_int32_t
latlon2ul(const char **latlonstrptr, int *which) {
const char *cp;
u_int32_t retval;
int deg = 0 , min = 0 , secs = 0 , secsfrac = 0 ;
cp = *latlonstrptr;
while (isdigit((unsigned char )*cp))
deg = deg * 10 + (*cp++ - '0' );
while (isspace((unsigned char )*cp))
cp++;
if (!(isdigit((unsigned char )*cp)))
goto fndhemi;
while (isdigit((unsigned char )*cp))
min = min * 10 + (*cp++ - '0' );
while (isspace((unsigned char )*cp))
cp++;
if (!(isdigit((unsigned char )*cp)))
goto fndhemi;
while (isdigit((unsigned char )*cp))
secs = secs * 10 + (*cp++ - '0' );
if (*cp == '.' ) { /* decimal seconds */
cp++;
if (isdigit((unsigned char )*cp)) {
secsfrac = (*cp++ - '0' ) * 100 ;
if (isdigit((unsigned char )*cp)) {
secsfrac += (*cp++ - '0' ) * 10 ;
if (isdigit((unsigned char )*cp)) {
secsfrac += (*cp++ - '0' );
}
}
}
}
while (!isspace((unsigned char )*cp)) /* if any trailing garbage */
cp++;
while (isspace((unsigned char )*cp))
cp++;
fndhemi:
switch (*cp) {
case 'N' : case 'n' :
case 'E' : case 'e' :
retval = ((unsigned )1 <<31 )
+ (((((deg * 60 ) + min) * 60 ) + secs) * 1000 )
+ secsfrac;
break ;
case 'S' : case 's' :
case 'W' : case 'w' :
retval = ((unsigned )1 <<31 )
- (((((deg * 60 ) + min) * 60 ) + secs) * 1000 )
- secsfrac;
break ;
default :
retval = 0 ; /* invalid value -- indicates error */
break ;
}
switch (*cp) {
case 'N' : case 'n' :
case 'S' : case 's' :
*which = 1 ; /* latitude */
break ;
case 'E' : case 'e' :
case 'W' : case 'w' :
*which = 2 ; /* longitude */
break ;
default :
*which = 0 ; /* error */
break ;
}
cp++; /* skip the hemisphere */
while (!isspace((unsigned char )*cp)) /* if any trailing garbage */
cp++;
while (isspace((unsigned char )*cp)) /* move to next field */
cp++;
*latlonstrptr = cp;
return (retval);
}
/* converts a zone file representation in a string to an RDATA on-the-wire
* representation. */
int
loc_aton(const char *ascii, u_char *binary)
{
const char *cp, *maxcp;
u_char *bcp;
u_int32_t latit = 0 , longit = 0 , alt = 0 ;
u_int32_t lltemp1 = 0 , lltemp2 = 0 ;
int altmeters = 0 , altfrac = 0 , altsign = 1 ;
u_int8_t hp = 0 x16; /* default = 1e6 cm = 10000.00m = 10km */
u_int8_t vp = 0 x13; /* default = 1e3 cm = 10.00m */
u_int8_t siz = 0 x12; /* default = 1e2 cm = 1.00m */
int which1 = 0 , which2 = 0 ;
cp = ascii;
maxcp = cp + strlen(ascii);
lltemp1 = latlon2ul(&cp, &which1);
lltemp2 = latlon2ul(&cp, &which2);
switch (which1 + which2) {
case 3 : /* 1 + 2, the only valid combination */
if ((which1 == 1 ) && (which2 == 2 )) { /* normal case */
latit = lltemp1;
longit = lltemp2;
} else if ((which1 == 2 ) && (which2 == 1 )) { /* reversed */
longit = lltemp1;
latit = lltemp2;
} else { /* some kind of brokenness */
return (0 );
}
break ;
default : /* we didn't get one of each */
return (0 );
}
/* altitude */
if (*cp == '-' ) {
altsign = -1 ;
cp++;
}
if (*cp == '+' )
cp++;
while (isdigit((unsigned char )*cp))
altmeters = altmeters * 10 + (*cp++ - '0' );
if (*cp == '.' ) { /* decimal meters */
cp++;
if (isdigit((unsigned char )*cp)) {
altfrac = (*cp++ - '0' ) * 10 ;
if (isdigit((unsigned char )*cp)) {
altfrac += (*cp++ - '0' );
}
}
}
alt = (10000000 + (altsign * (altmeters * 100 + altfrac)));
while (!isspace((unsigned char )*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace((unsigned char )*cp) && (cp < maxcp))
cp++;
if (cp >= maxcp)
goto defaults;
siz = precsize_aton(&cp);
while (!isspace((unsigned char )*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace((unsigned char )*cp) && (cp < maxcp))
cp++;
if (cp >= maxcp)
goto defaults;
hp = precsize_aton(&cp);
while (!isspace((unsigned char )*cp) && (cp < maxcp)) /* if trailing garbage or m */
cp++;
while (isspace((unsigned char )*cp) && (cp < maxcp))
cp++;
if (cp >= maxcp)
goto defaults;
vp = precsize_aton(&cp);
defaults:
bcp = binary;
*bcp++ = (u_int8_t) 0 ; /* version byte */
*bcp++ = siz;
*bcp++ = hp;
*bcp++ = vp;
PUTLONG(latit,bcp);
PUTLONG(longit,bcp);
PUTLONG(alt,bcp);
return (16 ); /* size of RR in octets */
}
/* takes an on-the-wire LOC RR and formats it in a human readable format. */
const char *
loc_ntoa(const u_char *binary, char *ascii, size_t bufsiz)
{
static const char *error = "?" ;
static char tmpbuf[sizeof
"1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m" ];
const u_char *cp = binary;
int latdeg, latmin, latsec, latsecfrac;
int longdeg, longmin, longsec, longsecfrac;
char northsouth, eastwest;
const char *altsign;
int altmeters, altfrac;
const u_int32_t referencealt = 100000 * 100 ;
int32_t latval, longval, altval;
u_int32_t templ;
u_int8_t sizeval, hpval, vpval, versionval;
char *sizestr, *hpstr, *vpstr;
versionval = *cp++;
if (ascii == NULL)
ascii = tmpbuf;
if (versionval) {
(void ) snprintf(ascii, bufsiz, "; error: unknown LOC RR version" );
return (ascii);
}
sizeval = *cp++;
hpval = *cp++;
vpval = *cp++;
GETLONG(templ, cp);
latval = (templ - ((unsigned )1 <<31 ));
GETLONG(templ, cp);
longval = (templ - ((unsigned )1 <<31 ));
GETLONG(templ, cp);
if (templ < referencealt) { /* below WGS 84 spheroid */
altval = referencealt - templ;
altsign = "-" ;
} else {
altval = templ - referencealt;
altsign = "" ;
}
if (latval < 0 ) {
northsouth = 'S' ;
latval = -latval;
} else
northsouth = 'N' ;
latsecfrac = latval % 1000 ;
latval = latval / 1000 ;
latsec = latval % 60 ;
latval = latval / 60 ;
latmin = latval % 60 ;
latval = latval / 60 ;
latdeg = latval;
if (longval < 0 ) {
eastwest = 'W' ;
longval = -longval;
} else
eastwest = 'E' ;
longsecfrac = longval % 1000 ;
longval = longval / 1000 ;
longsec = longval % 60 ;
longval = longval / 60 ;
longmin = longval % 60 ;
longval = longval / 60 ;
longdeg = longval;
altfrac = altval % 100 ;
altmeters = (altval / 100 );
sizestr = strdup(precsize_ntoa((u_int32_t)sizeval));
hpstr = strdup(precsize_ntoa((u_int32_t)hpval));
vpstr = strdup(precsize_ntoa((u_int32_t)vpval));
snprintf(ascii, bufsiz,
"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm" ,
latdeg, latmin, latsec, latsecfrac, northsouth,
longdeg, longmin, longsec, longsecfrac, eastwest,
altsign, altmeters, altfrac,
(sizestr != NULL) ? sizestr : error,
(hpstr != NULL) ? hpstr : error,
(vpstr != NULL) ? vpstr : error);
if (sizestr != NULL)
free(sizestr);
if (hpstr != NULL)
free(hpstr);
if (vpstr != NULL)
free(vpstr);
return (ascii);
}
/* Return the number of DNS hierarchy levels in the name. */
int
dn_count_labels(const char *name) {
size_t len, i, count;
len = strlen(name);
for (i = 0 , count = 0 ; i < len; i++) {
/* XXX need to check for \. or use named's nlabels(). */
if (name[i] == '.' )
count++;
}
/* don't count initial wildcard */
if (name[0 ] == '*' )
if (count)
count--;
/* don't count the null label for root. */
/* if terminating '.' not found, must adjust */
/* count to include last label */
if (len > 0 && name[len-1 ] != '.' )
count++;
_DIAGASSERT(__type_fit(int , count));
return (int )count;
}
/*
* Make dates expressed in seconds - since - Jan - 1 - 1970 easy to read .
* SIG records are required to be printed like this , by the Secure DNS RFC .
*/
char *
p_secstodate (u_long secs) {
/* XXX nonreentrant */
static char output[15 ]; /* YYYYMMDDHHMMSS and null */
time_t myclock = secs;
struct tm *mytime;
#ifdef HAVE_TIME_R
struct tm res;
mytime = gmtime_r(&myclock, &res);
#else
mytime = gmtime(&myclock);
#endif
mytime->tm_year += 1900 ;
mytime->tm_mon += 1 ;
snprintf(output, sizeof (output), "%04d%02d%02d%02d%02d%02d" ,
mytime->tm_year, mytime->tm_mon, mytime->tm_mday,
mytime->tm_hour, mytime->tm_min, mytime->tm_sec);
return (output);
}
u_int16_t
res_nametoclass(const char *buf, int *successp) {
unsigned long result;
char *endptr;
int success;
result = sym_ston(__p_class_syms, buf, &success);
if (success)
goto done;
if (strncasecmp(buf, "CLASS" , 5 ) != 0 ||
!isdigit((unsigned char )buf[5 ]))
goto done;
errno = 0 ;
result = strtoul(buf + 5 , &endptr, 10 );
if (errno == 0 && *endptr == '\0' && result <= 0 xffffU)
success = 1 ;
done:
if (successp)
*successp = success;
return (u_int16_t)(result);
}
u_int16_t
res_nametotype(const char *buf, int *successp) {
unsigned long result;
char *endptr;
int success;
result = sym_ston(__p_type_syms, buf, &success);
if (success)
goto done;
if (strncasecmp(buf, "type" , 4 ) != 0 ||
!isdigit((unsigned char )buf[4 ]))
goto done;
errno = 0 ;
result = strtoul(buf + 4 , &endptr, 10 );
if (errno == 0 && *endptr == '\0' && result <= 0 xffffU)
success = 1 ;
done:
if (successp)
*successp = success;
return (u_int16_t)(result);
}
Messung V0.5 in Prozent C=84 H=95 G=89
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-06-28)
¤
*© Formatika GbR, Deutschland