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authorUlrich Drepper <drepper@redhat.com>1999-12-04 18:05:55 +0000
committerUlrich Drepper <drepper@redhat.com>1999-12-04 18:05:55 +0000
commitb43b13ac2544b11f35be301d1589b51a8473e32b (patch)
tree6520da2e17c933ebc29b4572cdcc27410b10a4c4 /resolv/res_comp.c
parent591e1ffbf8db5e059b9bcf3bde6d7758f018a46d (diff)
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Update.
1999-12-03 Andreas Jaeger <aj@suse.de> * nss/getXXbyYY.c: Include <resolv.h> (FUNCTION_NAME): Use res_ninit instead of res_init. * nss/getXXbyYY_r.c [NEED__RES]: Include <resolv.h> for _res declaration and prototypes. Remove extra _res declaration. (INTERNAL): Use thread aware res_ninit function. * inet/gethstbyad_r.c: Include <resolv.h>. * resolv/res_data.c: Update from Bind 8.2.2-P5. Moved res_init to res_libc.c. Disabled unneeded functions. * resolv/res_libc.c: New file. * Versions.def: Add version GLIBC_2.2 for libpthread. Add versions GLIBC_2.1 and GLIBC_2.2 for libresolv. * include/resolv.h: Add internal interfaces. * resolv/Makefile (routines): Add new files. (libresolv-routines): Likewise. (distribute): Likewise. * resolv/gethnamaddr.c: Use thread safe resolver functions. * resolv/nss_dns/dns-host.c: Likewise. * resolv/nss_dns/dns-network.c: Likewise. * resolv/arpa/nameser.h: Update from Bind 8.2.2-P5. * resolv/nsap_addr.c: Likewise. * resolv/res_comp.c: Likewise. * resolv/res_debug.c: Likewise. * resolv/res_init.c: Likewise. * resolv/res_mkquery.c: Likewise. * resolv/res_query.c: Likewise. * resolv/res_send.c: Likewise. * resolv/resolv.h: Likewise. * resolv/Versions: Add __res_state and __res_ninit with version GLIBC_2.2 to libc. Add new interfaces with version GLIBC_2.2 to libresolv. * resolv/Banner: Update. * include/arpa/nameser_compat.h: New file. * resolv/ns_name.c: New file from Bind 8.2.2-P5. * resolv/ns_netint.c: Likewise. * resolv/ns_parse.c: Likewise. * resolv/ns_print.c: Likewise. * resolv/ns_samedomain.c: Likewise. * resolv/ns_ttl.c: Likewise. * resolv/arpa/nameser_compat.h: Likewise. * resolv/res_debug.h: Likewise. Some patches are based on work done by Adam D. Bradley <artdodge@cs.bu.edu>. * sysdeps/unix/sysv/linux/configure.in: Remove check for ldconfig, set always use_ldconfig instead.
Diffstat (limited to 'resolv/res_comp.c')
-rw-r--r--resolv/res_comp.c792
1 files changed, 45 insertions, 747 deletions
diff --git a/resolv/res_comp.c b/resolv/res_comp.c
index 2d90e37794..e6f54ce06a 100644
--- a/resolv/res_comp.c
+++ b/resolv/res_comp.c
@@ -1,6 +1,4 @@
/*
- * ++Copyright++ 1985, 1993
- * -
* Copyright (c) 1985, 1993
* The Regents of the University of California. All rights reserved.
*
@@ -45,13 +43,28 @@
* 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--
+ */
+
+/*
+ * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
+static const char sccsid[] = "@(#)res_comp.c 8.1 (Berkeley) 6/4/93";
+static const char rcsid[] = "$Id$";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
@@ -64,24 +77,9 @@ static char rcsid[] = "$Id$";
#include <resolv.h>
#include <stdio.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <unistd.h>
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
+#include <string.h>
+#include <unistd.h>
-extern int __ns_name_ntop __P((const u_char *, char *, size_t));
-static int ns_name_pton __P((const char *, u_char *, size_t));
-extern int __ns_name_unpack __P((const u_char *, const u_char *,
- const u_char *, u_char *, size_t));
-static int ns_name_pack __P((const u_char *, u_char *, int,
- const u_char **, const u_char **));
-static int ns_name_uncompress __P((const u_char *, const u_char *,
- const u_char *, char *, size_t));
-static int ns_name_compress __P((const char *, u_char *, size_t,
- const u_char **, const u_char **));
-static int ns_name_skip __P((const u_char **, const u_char *));
/*
* Expand compressed domain name 'comp_dn' to full domain name.
@@ -91,12 +89,8 @@ static int ns_name_skip __P((const u_char **, const u_char *));
* Return size of compressed name or -1 if there was an error.
*/
int
-dn_expand(msg, eom, src, dst, dstsiz)
- const u_char *msg;
- const u_char *eom;
- const u_char *src;
- char *dst;
- int dstsiz;
+dn_expand(const u_char *msg, const u_char *eom, const u_char *src,
+ char *dst, int dstsiz)
{
int n = ns_name_uncompress(msg, eom, src, dst, (size_t)dstsiz);
@@ -111,12 +105,8 @@ dn_expand(msg, eom, src, dst, dstsiz)
* 'length' is the size of the array pointed to by 'comp_dn'.
*/
int
-dn_comp(src, dst, dstsiz, dnptrs, lastdnptr)
- const char *src;
- u_char *dst;
- int dstsiz;
- u_char **dnptrs;
- u_char **lastdnptr;
+dn_comp(const char *src, u_char *dst, int dstsiz,
+ u_char **dnptrs, u_char **lastdnptr)
{
return (ns_name_compress(src, dst, (size_t)dstsiz,
(const u_char **)dnptrs,
@@ -127,10 +117,7 @@ dn_comp(src, dst, dstsiz, dnptrs, lastdnptr)
* Skip over a compressed domain name. Return the size or -1.
*/
int
-__dn_skipname(ptr, eom)
- const u_char *ptr;
- const u_char *eom;
-{
+dn_skipname(const u_char *ptr, const u_char *eom) {
const u_char *saveptr = ptr;
if (ns_name_skip(&ptr, eom) == -1)
@@ -163,9 +150,7 @@ __dn_skipname(ptr, eom)
#define domainchar(c) ((c) > 0x20 && (c) < 0x7f)
int
-res_hnok(dn)
- const char *dn;
-{
+res_hnok(const char *dn) {
int ppch = '\0', pch = PERIOD, ch = *dn++;
while (ch != '\0') {
@@ -193,9 +178,7 @@ res_hnok(dn)
* but must otherwise be as a host name.
*/
int
-res_ownok(dn)
- const char *dn;
-{
+res_ownok(const char *dn) {
if (asterchar(dn[0])) {
if (periodchar(dn[1]))
return (res_hnok(dn+2));
@@ -210,9 +193,7 @@ res_ownok(dn)
* label, but the rest of the name has to look like a host name.
*/
int
-res_mailok(dn)
- const char *dn;
-{
+res_mailok(const char *dn) {
int ch, escaped = 0;
/* "." is a valid missing representation */
@@ -232,7 +213,7 @@ res_mailok(dn)
}
if (periodchar(ch))
return (res_hnok(dn));
- return(0);
+ return (0);
}
/*
@@ -240,9 +221,7 @@ res_mailok(dn)
* recommendations.
*/
int
-res_dnok(dn)
- const char *dn;
-{
+res_dnok(const char *dn) {
int ch;
while ((ch = *dn++) != '\0')
@@ -251,700 +230,19 @@ res_dnok(dn)
return (1);
}
+#ifdef BIND_4_COMPAT
/*
- * Routines to insert/extract short/long's.
+ * This module must export the following externally-visible symbols:
+ * ___putlong
+ * ___putshort
+ * __getlong
+ * __getshort
+ * Note that one _ comes from C and the others come from us.
*/
-
-u_int16_t
-_getshort(msgp)
- register const u_char *msgp;
-{
- register u_int16_t u;
-
- GETSHORT(u, msgp);
- return (u);
-}
-
-#ifdef NeXT
-/*
- * nExt machines have some funky library conventions, which we must maintain.
- */
-u_int16_t
-res_getshort(msgp)
- register const u_char *msgp;
-{
- return (_getshort(msgp));
-}
-#endif
-
-u_int32_t
-_getlong(msgp)
- register const u_char *msgp;
-{
- register u_int32_t u;
-
- GETLONG(u, msgp);
- return (u);
-}
-
-void
-#if defined(__STDC__) || defined(__cplusplus)
-__putshort(register u_int16_t s, register u_char *msgp) /* must match proto */
-#else
-__putshort(s, msgp)
- register u_int16_t s;
- register u_char *msgp;
-#endif
-{
- PUTSHORT(s, msgp);
-}
-
-void
-__putlong(l, msgp)
- register u_int32_t l;
- register u_char *msgp;
-{
- PUTLONG(l, msgp);
-}
-
-/* ++ From BIND 8.1.1. ++ */
-/*
- * Copyright (c) 1996 by Internet Software Consortium.
- *
- * 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.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM 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.
- */
-
-/*"Id: ns_name.c,v 1.1 1997/12/13 02:41:13 vixie Exp vixie"*/
-
-/*#include "port_before.h"*/
-
-/*#include <sys/types.h>*/
-
-/*#include <netinet/in.h>*/
-/*#include <arpa/nameser.h>*/
-
-/*#include <errno.h>*/
-/*#include <resolv.h>*/
-/*#include <string.h>*/
-
-/*#include "port_after.h"*/
-
-#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
-#define NS_MAXCDNAME 255 /* maximum compressed domain name */
-
-/* Data. */
-
-static const char digits[] = "0123456789";
-
-/* Forward. */
-
-static int special(int);
-static int printable(int);
-static int dn_find(const u_char *, const u_char *,
- const u_char * const *,
- const u_char * const *);
-
-/* Public. */
-
-/*
- * ns_name_ntop(src, dst, dstsiz)
- * Convert an encoded domain name to printable ascii as per RFC1035.
- * return:
- * Number of bytes written to buffer, or -1 (with errno set)
- * notes:
- * The root is returned as "."
- * All other domains are returned in non absolute form
- */
-int
-__ns_name_ntop(src, dst, dstsiz)
- const u_char *src;
- char *dst;
- size_t dstsiz;
-{
- const u_char *cp;
- char *dn, *eom;
- u_char c;
- u_int n;
-
- cp = src;
- dn = dst;
- eom = dst + dstsiz;
-
- while ((n = *cp++) != 0) {
- if ((n & NS_CMPRSFLGS) != 0) {
- /* Some kind of compression pointer. */
- __set_errno (EINVAL);
- return (-1);
- }
- if (dn != dst) {
- if (dn >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = '.';
- }
- if (dn + n >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- for ((void)NULL; n > 0; n--) {
- c = *cp++;
- if (special(c)) {
- if (dn + 1 >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = '\\';
- *dn++ = (char)c;
- } else if (!printable(c)) {
- if (dn + 3 >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = '\\';
- *dn++ = digits[c / 100];
- *dn++ = digits[(c % 100) / 10];
- *dn++ = digits[c % 10];
- } else {
- if (dn >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = (char)c;
- }
- }
- }
- if (dn == dst) {
- if (dn >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = '.';
- }
- if (dn >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dn++ = '\0';
- return (dn - dst);
-}
-
-/*
- * ns_name_pton(src, dst, dstsiz)
- * Convert a ascii string into an encoded domain name as per RFC1035.
- * return:
- * -1 if it fails
- * 1 if string was fully qualified
- * 0 is string was not fully qualified
- * notes:
- * Enforces label and domain length limits.
- */
-
-static int
-ns_name_pton(src, dst, dstsiz)
- const char *src;
- u_char *dst;
- size_t dstsiz;
-{
- u_char *label, *bp, *eom;
- int c, n, escaped;
- char *cp;
-
- escaped = 0;
- bp = dst;
- eom = dst + dstsiz;
- label = bp++;
-
- while ((c = *src++) != 0) {
- if (escaped) {
- if ((cp = strchr(digits, c)) != NULL) {
- n = (cp - digits) * 100;
- if ((c = *src++) == 0 ||
- (cp = strchr(digits, c)) == NULL) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- n += (cp - digits) * 10;
- if ((c = *src++) == 0 ||
- (cp = strchr(digits, c)) == NULL) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- n += (cp - digits);
- if (n > 255) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- c = n;
- }
- escaped = 0;
- } else if (c == '\\') {
- escaped = 1;
- continue;
- } else if (c == '.') {
- c = (bp - label - 1);
- if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- if (label >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *label = c;
- /* Fully qualified ? */
- if (*src == '\0') {
- if (c != 0) {
- if (bp >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *bp++ = '\0';
- }
- if ((bp - dst) > MAXCDNAME) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- return (1);
- }
- if (c == 0) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- label = bp++;
- continue;
- }
- if (bp >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *bp++ = (u_char)c;
- }
- c = (bp - label - 1);
- if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- if (label >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *label = c;
- if (c != 0) {
- if (bp >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *bp++ = 0;
- }
- if ((bp - dst) > MAXCDNAME) { /* src too big */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- return (0);
-}
-
-/*
- * ns_name_unpack(msg, eom, src, dst, dstsiz)
- * Unpack a domain name from a message, source may be compressed.
- * return:
- * -1 if it fails, or consumed octets if it succeeds.
- */
-int
-__ns_name_unpack(msg, eom, src, dst, dstsiz)
- const u_char *msg;
- const u_char *eom;
- const u_char *src;
- u_char *dst;
- size_t dstsiz;
-{
- const u_char *srcp, *dstlim;
- u_char *dstp;
-#ifdef _LIBC
- /* We don't want warnings! */
- int n, len, checked;
-#else
- int n, c, len, checked;
-#endif
-
- len = -1;
- checked = 0;
- dstp = dst;
- srcp = src;
- dstlim = dst + dstsiz;
- if (srcp < msg || srcp >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- /* Fetch next label in domain name. */
- while ((n = *srcp++) != 0) {
- /* Check for indirection. */
- switch (n & NS_CMPRSFLGS) {
- case 0:
- /* Limit checks. */
- if (dstp + n + 1 >= dstlim || srcp + n >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- checked += n + 1;
- *dstp++ = n;
- memcpy(dstp, srcp, n);
- dstp += n;
- srcp += n;
- break;
-
- case NS_CMPRSFLGS:
- if (srcp >= eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- if (len < 0)
- len = srcp - src + 1;
- srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff));
- if (srcp < msg || srcp >= eom) { /* Out of range. */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- checked += 2;
- /*
- * Check for loops in the compressed name;
- * if we've looked at the whole message,
- * there must be a loop.
- */
- if (checked >= eom - msg) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- break;
-
- default:
- __set_errno (EMSGSIZE);
- return (-1); /* flag error */
- }
- }
- *dstp = '\0';
- if (len < 0)
- len = srcp - src;
- return (len);
-}
-
-/*
- * ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr)
- * Pack domain name 'domain' into 'comp_dn'.
- * return:
- * Size of the compressed name, or -1.
- * notes:
- * 'dnptrs' is an array of pointers to previous compressed names.
- * dnptrs[0] is a pointer to the beginning of the message. The array
- * ends with NULL.
- * 'lastdnptr' is a pointer to the end of the array pointed to
- * by 'dnptrs'.
- * Side effects:
- * The list of pointers in dnptrs is updated for labels inserted into
- * the message as we compress the name. If 'dnptr' is NULL, we don't
- * try to compress names. If 'lastdnptr' is NULL, we don't update the
- * list.
- */
-static int
-ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr)
- const u_char *src;
- u_char *dst;
- int dstsiz;
- const u_char **dnptrs;
- const u_char **lastdnptr;
-{
- u_char *dstp;
- const u_char **cpp, **lpp, *eob, *msg;
- const u_char *srcp;
- int n, l;
-
- srcp = src;
- dstp = dst;
- eob = dstp + dstsiz;
- lpp = cpp = NULL;
- if (dnptrs != NULL) {
- if ((msg = *dnptrs++) != NULL) {
- for (cpp = dnptrs; *cpp != NULL; cpp++)
- (void)NULL;
- lpp = cpp; /* end of list to search */
- }
- } else
- msg = NULL;
-
- /* make sure the domain we are about to add is legal */
- l = 0;
- do {
- n = *srcp;
- if ((n & NS_CMPRSFLGS) != 0) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- l += n + 1;
- if (l > MAXCDNAME) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- srcp += n + 1;
- } while (n != 0);
-
- srcp = src;
- do {
- /* Look to see if we can use pointers. */
- n = *srcp;
- if (n != 0 && msg != NULL) {
- l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
- (const u_char * const *)lpp);
- if (l >= 0) {
- if (dstp + 1 >= eob) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *dstp++ = (l >> 8) | NS_CMPRSFLGS;
- *dstp++ = l % 256;
- return (dstp - dst);
- }
- /* Not found, save it. */
- if (lastdnptr != NULL && cpp < lastdnptr - 1 &&
- (dstp - msg) < 0x4000) {
- *cpp++ = dstp;
- *cpp = NULL;
- }
- }
- /* copy label to buffer */
- if (n & NS_CMPRSFLGS) { /* Should not happen. */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- if (dstp + 1 + n >= eob) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- memcpy(dstp, srcp, n + 1);
- srcp += n + 1;
- dstp += n + 1;
- } while (n != 0);
-
- if (dstp > eob) {
- if (msg != NULL)
- *lpp = NULL;
- __set_errno (EMSGSIZE);
- return (-1);
- }
- return (dstp - dst);
-}
-
-/*
- * ns_name_uncompress(msg, eom, src, dst, dstsiz)
- * Expand compressed domain name to presentation format.
- * return:
- * Number of bytes read out of `src', or -1 (with errno set).
- * note:
- * Root domain returns as "." not "".
- */
-static int
-ns_name_uncompress(msg, eom, src, dst, dstsiz)
- const u_char *msg;
- const u_char *eom;
- const u_char *src;
- char *dst;
- size_t dstsiz;
-{
- u_char tmp[NS_MAXCDNAME];
- int n;
-
- if ((n = __ns_name_unpack(msg, eom, src, tmp, sizeof tmp)) == -1)
- return (-1);
- if (__ns_name_ntop(tmp, dst, dstsiz) == -1)
- return (-1);
- return (n);
-}
-
-/*
- * ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr)
- * Compress a domain name into wire format, using compression pointers.
- * return:
- * Number of bytes consumed in `dst' or -1 (with errno set).
- * notes:
- * 'dnptrs' is an array of pointers to previous compressed names.
- * dnptrs[0] is a pointer to the beginning of the message.
- * The list ends with NULL. 'lastdnptr' is a pointer to the end of the
- * array pointed to by 'dnptrs'. Side effect is to update the list of
- * pointers for labels inserted into the message as we compress the name.
- * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
- * is NULL, we don't update the list.
- */
-static int
-ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr)
- const char *src;
- u_char *dst;
- size_t dstsiz;
- const u_char **dnptrs;
- const u_char **lastdnptr;
-{
- u_char tmp[NS_MAXCDNAME];
-
- if (ns_name_pton(src, tmp, sizeof tmp) == -1)
- return (-1);
- return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr));
-}
-
-/*
- * ns_name_skip(ptrptr, eom)
- * Advance *ptrptr to skip over the compressed name it points at.
- * return:
- * 0 on success, -1 (with errno set) on failure.
- */
-static int
-ns_name_skip(ptrptr, eom)
- const u_char **ptrptr;
- const u_char *eom;
-{
- const u_char *cp;
- u_int n;
-
- cp = *ptrptr;
- while (cp < eom && (n = *cp++) != 0) {
- /* Check for indirection. */
- switch (n & NS_CMPRSFLGS) {
- case 0: /* normal case, n == len */
- cp += n;
- continue;
- case NS_CMPRSFLGS: /* indirection */
- cp++;
- break;
- default: /* illegal type */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- break;
- }
- if (cp > eom) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- *ptrptr = cp;
- return (0);
-}
-
-/* Private. */
-
-/*
- * special(ch)
- * Thinking in noninternationalized USASCII (per the DNS spec),
- * is this characted special ("in need of quoting") ?
- * return:
- * boolean.
- */
-static int
-special(ch)
- int ch;
-{
- switch (ch) {
- case 0x22: /* '"' */
- case 0x2E: /* '.' */
- case 0x3B: /* ';' */
- case 0x5C: /* '\\' */
- /* Special modifiers in zone files. */
- case 0x40: /* '@' */
- case 0x24: /* '$' */
- return (1);
- default:
- return (0);
- }
-}
-
-/*
- * printable(ch)
- * Thinking in noninternationalized USASCII (per the DNS spec),
- * is this character visible and not a space when printed ?
- * return:
- * boolean.
- */
-static int
-printable(ch)
- int ch;
-{
- return (ch > 0x20 && ch < 0x7f);
-}
-
-/*
- * Thinking in noninternationalized USASCII (per the DNS spec),
- * convert this character to lower case if it's upper case.
- */
-static int
-mklower(ch)
- int ch;
-{
- if (ch >= 0x41 && ch <= 0x5A)
- return (ch + 0x20);
- return (ch);
-}
-
-/*
- * dn_find(domain, msg, dnptrs, lastdnptr)
- * Search for the counted-label name in an array of compressed names.
- * return:
- * offset from msg if found, or -1.
- * notes:
- * dnptrs is the pointer to the first name on the list,
- * not the pointer to the start of the message.
- */
-static int
-dn_find(domain, msg, dnptrs, lastdnptr)
- const u_char *domain;
- const u_char *msg;
- const u_char * const *dnptrs;
- const u_char * const *lastdnptr;
-{
- const u_char *dn, *cp, *sp;
- const u_char * const *cpp;
- u_int n;
-
- for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
- dn = domain;
- sp = cp = *cpp;
- while ((n = *cp++) != 0) {
- /*
- * check for indirection
- */
- switch (n & NS_CMPRSFLGS) {
- case 0: /* normal case, n == len */
- if (n != *dn++)
- goto next;
- for ((void)NULL; n > 0; n--)
- if (mklower(*dn++) != mklower(*cp++))
- goto next;
- /* Is next root for both ? */
- if (*dn == '\0' && *cp == '\0')
- return (sp - msg);
- if (*dn)
- continue;
- goto next;
-
- case NS_CMPRSFLGS: /* indirection */
- cp = msg + (((n & 0x3f) << 8) | *cp);
- break;
-
- default: /* illegal type */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- }
- next: ;
- }
- __set_errno (ENOENT);
- return (-1);
-}
-
-/* -- From BIND 8.1.1. -- */
+void __putlong(u_int32_t src, u_char *dst) { ns_put32(src, dst); }
+void __putshort(u_int16_t src, u_char *dst) { ns_put16(src, dst); }
+#ifndef __ultrix__
+u_int32_t _getlong(const u_char *src) { return (ns_get32(src)); }
+u_int16_t _getshort(const u_char *src) { return (ns_get16(src)); }
+#endif /*__ultrix__*/
+#endif /*BIND_4_COMPAT*/