diff options
author | Guo Mang <mang.guo@intel.com> | 2017-08-02 09:54:47 +0800 |
---|---|---|
committer | Guo Mang <mang.guo@intel.com> | 2017-09-05 19:45:08 +0800 |
commit | 6c128c65b5ec0e5b8b5a0ccb165f3afd29e485f8 (patch) | |
tree | 444372d92a0ae8991fe4d15eb3937df43690dfda /StdLib/BsdSocketLib/gethostbydns.c | |
parent | b207c6434d7a5a4502975d322312e07017e8a8cb (diff) | |
download | edk2-platforms-6c128c65b5ec0e5b8b5a0ccb165f3afd29e485f8.tar.xz |
Remove core packages since we can get them from edk2 repository
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'StdLib/BsdSocketLib/gethostbydns.c')
-rw-r--r-- | StdLib/BsdSocketLib/gethostbydns.c | 814 |
1 files changed, 0 insertions, 814 deletions
diff --git a/StdLib/BsdSocketLib/gethostbydns.c b/StdLib/BsdSocketLib/gethostbydns.c deleted file mode 100644 index 25e7c3b142..0000000000 --- a/StdLib/BsdSocketLib/gethostbydns.c +++ /dev/null @@ -1,814 +0,0 @@ -/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * 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.
- * -
- * --Copyright--
- */
-
-/*
- * Portions copyright (c) 1999, 2000
- * Intel Corporation.
- * 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 Intel Corporation and
- * its contributors.
- *
- * 4. Neither the name of Intel Corporation or its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION 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 INTEL CORPORATION 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.
- *
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
-static char fromrcsid[] = "From: Id: gethnamaddr.c,v 8.23 1998/04/07 04:59:46 vixie Exp $";
-static char rcsid[] = "$Id: gethostbydns.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
-#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 <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <netdb.h>
-#include <resolv.h>
-#include <ctype.h>
-#include <errno.h>
-#ifdef _ORG_FREEBSD_
-#include <syslog.h>
-#else
-#include <stdlib.h>
-u_int32_t _getlong(const u_char *src);
-u_int16_t _getshort(const u_char *src);
-#endif
-
-#include "res_config.h"
-#include "Socklib_internals.h"
-
-#define SPRINTF(x) ((size_t)sprintf x)
-
-#define MAXALIASES 35
-#define MAXADDRS 35
-
-static const char AskedForGot[] =
- "gethostby*.gethostanswer: asked for \"%s\", got \"%s\"";
-
-static char *h_addr_ptrs[MAXADDRS + 1];
-
-static struct hostent host;
-static char *host_aliases[MAXALIASES];
-static char hostbuf[8*1024];
-static u_char host_addr[16]; /* IPv4 or IPv6 */
-
-#ifdef RESOLVSORT
-static void addrsort(char **, int);
-#endif
-
-#if PACKETSZ > 1024
-#define MAXPACKET PACKETSZ
-#else
-#define MAXPACKET 1024
-#endif
-
-typedef union {
- HEADER hdr;
- u_char buf[MAXPACKET];
-} querybuf;
-
-typedef union {
- int32_t al;
- char ac;
-} align;
-
-extern int h_errno;
-int _dns_ttl_;
-
-#ifdef DEBUG_RES
-static void
-dprintf(char *msg, int num)
-{
- if (_res.options & RES_DEBUG) {
- int save = errno;
-
- printf(msg, num);
- errno = save;
- }
-}
-#else
-# define dprintf(msg, num) /*nada*/
-#endif
-
-#define BOUNDED_INCR(x) \
- do { \
- cp += x; \
- if (cp > eom) { \
- h_errno = NO_RECOVERY; \
- return (NULL); \
- } \
- } while (0)
-
-#define BOUNDS_CHECK(ptr, count) \
- do { \
- if ((ptr) + (count) > eom) { \
- h_errno = NO_RECOVERY; \
- return (NULL); \
- } \
- } while (0)
-
-static struct hostent *
-gethostanswer(const querybuf *answer, int anslen, const char *qname, int qtype)
-{
- register const HEADER *hp;
- register const u_char *cp;
- register int n;
- const u_char *eom, *erdata;
- char *bp, **ap, **hap;
- int type, class, buflen, ancount, qdcount;
- int haveanswer, had_error;
- int toobig = 0;
- char tbuf[MAXDNAME];
- const char *tname;
- int (*name_ok)(const char *);
-
- tname = qname;
- host.h_name = NULL;
- eom = answer->buf + anslen;
- switch (qtype) {
- case T_A:
- case T_AAAA:
- name_ok = res_hnok;
- break;
- case T_PTR:
- name_ok = res_dnok;
- break;
- default:
- h_errno = NO_RECOVERY;
- return (NULL); /* XXX should be abort(); */
- }
- /*
- * find first satisfactory answer
- */
- hp = &answer->hdr;
- ancount = ntohs(hp->ancount);
- qdcount = ntohs(hp->qdcount);
- bp = hostbuf;
- buflen = sizeof hostbuf;
- cp = answer->buf;
- BOUNDED_INCR(HFIXEDSZ);
- if (qdcount != 1) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !(*name_ok)(bp)) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- BOUNDED_INCR(n + QFIXEDSZ);
- if (qtype == T_A || qtype == T_AAAA) {
- /* res_send() has already verified that the query name is the
- * same as the one we sent; this just gets the expanded name
- * (i.e., with the succeeding search-domain tacked on).
- */
- n = (int)strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- host.h_name = bp;
- bp += n;
- buflen -= n;
- /* The qname can be abbreviated, but h_name is now absolute. */
- qname = host.h_name;
- }
- ap = host_aliases;
- *ap = NULL;
- host.h_aliases = host_aliases;
- hap = h_addr_ptrs;
- *hap = NULL;
- host.h_addr_list = h_addr_ptrs;
- haveanswer = 0;
- had_error = 0;
- _dns_ttl_ = -1;
- while (ancount-- > 0 && cp < eom && !had_error) {
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !(*name_ok)(bp)) {
- had_error++;
- continue;
- }
- cp += n; /* name */
- BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ);
- type = _getshort(cp);
- cp += INT16SZ; /* type */
- class = _getshort(cp);
- cp += INT16SZ; /* class */
- if (qtype == T_A && type == T_A)
- _dns_ttl_ = _getlong(cp);
- cp += INT32SZ; /* TTL */
- n = _getshort(cp);
- cp += INT16SZ; /* len */
- BOUNDS_CHECK(cp, n);
- erdata = cp + n;
- if (class != C_IN) {
- /* XXX - debug? syslog? */
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) {
- if (ap >= &host_aliases[MAXALIASES-1])
- continue;
- n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
- if ((n < 0) || !(*name_ok)(tbuf)) {
- had_error++;
- continue;
- }
- cp += n;
- if (cp != erdata) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- /* Store alias. */
- *ap++ = bp;
- n = (int)strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
- had_error++;
- continue;
- }
- bp += n;
- buflen -= n;
- /* Get canonical name. */
- n = (int)strlen(tbuf) + 1; /* for the \0 */
- if (n > buflen || n >= MAXHOSTNAMELEN) {
- had_error++;
- continue;
- }
- strcpy(bp, tbuf);
- host.h_name = bp;
- bp += n;
- buflen -= n;
- continue;
- }
- if (qtype == T_PTR && type == T_CNAME) {
- n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
- if (n < 0 || !res_dnok(tbuf)) {
- had_error++;
- continue;
- }
- cp += n;
- if (cp != erdata) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- /* Get canonical name. */
- n = (int)strlen(tbuf) + 1; /* for the \0 */
- if (n > buflen || n >= MAXHOSTNAMELEN) {
- had_error++;
- continue;
- }
- strcpy(bp, tbuf);
- tname = bp;
- bp += n;
- buflen -= n;
- continue;
- }
- if (type != qtype) {
-#ifdef _ORG_FREEBSD_
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostby*.gethostanswer: asked for \"%s %s %s\", got type \"%s\"",
- qname, p_class(C_IN), p_type(qtype),
- p_type(type));
-#endif
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- switch (type) {
- case T_PTR:
- if (strcasecmp(tname, bp) != 0) {
-#ifdef _ORG_FREEBSD_
- syslog(LOG_NOTICE|LOG_AUTH,
- AskedForGot, qname, bp);
-#endif
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !res_hnok(bp)) {
- had_error++;
- break;
- }
-#if MULTI_PTRS_ARE_ALIASES
- cp += n;
- if (cp != erdata) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- if (!haveanswer)
- host.h_name = bp;
- else if (ap < &host_aliases[MAXALIASES-1])
- *ap++ = bp;
- else
- n = -1;
- if (n != -1) {
- n = (int)strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
- had_error++;
- break;
- }
- bp += n;
- buflen -= n;
- }
- break;
-#else
- host.h_name = bp;
- if (_res.options & RES_USE_INET6) {
- n = strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
- had_error++;
- break;
- }
- bp += n;
- buflen -= n;
- _map_v4v6_hostent(&host, &bp, &buflen);
- }
- h_errno = NETDB_SUCCESS;
- return (&host);
-#endif
- case T_A:
- case T_AAAA:
- if (strcasecmp(host.h_name, bp) != 0) {
-#ifdef _ORG_FREEBSD_
- syslog(LOG_NOTICE|LOG_AUTH,
- AskedForGot, host.h_name, bp);
-#endif
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- if (n != host.h_length) {
- cp += n;
- continue;
- }
- if (!haveanswer) {
- register int nn;
-
- host.h_name = bp;
- nn = (int)strlen(bp) + 1; /* for the \0 */
- bp += nn;
- buflen -= nn;
- }
-
- bp += sizeof(align) - ((size_t)bp % sizeof(align));
-
- if (bp + n >= &hostbuf[sizeof hostbuf]) {
- dprintf("size (%d) too big\n", n);
- had_error++;
- continue;
- }
- if (hap >= &h_addr_ptrs[MAXADDRS-1]) {
- if (!toobig++)
- dprintf("Too many addresses (%d)\n",
- MAXADDRS);
- cp += n;
- continue;
- }
- *hap++ = bp;
- bcopy(cp, bp, n);
- bp += n;
- buflen -= n;
- cp += n;
- if (cp != erdata) {
- h_errno = NO_RECOVERY;
- return (NULL);
- }
- break;
- default:
- dprintf("Impossible condition (type=%d)\n", type);
- h_errno = NO_RECOVERY;
- return (NULL);
- /* BIND has abort() here, too risky on bad data */
- }
- if (!had_error)
- haveanswer++;
- }
- if (haveanswer) {
- *ap = NULL;
- *hap = NULL;
-# if defined(RESOLVSORT)
- /*
- * Note: we sort even if host can take only one address
- * in its return structures - should give it the "best"
- * address in that case, not some random one
- */
- if (_res.nsort && haveanswer > 1 && qtype == T_A)
- addrsort(h_addr_ptrs, haveanswer);
-# endif /*RESOLVSORT*/
- if (!host.h_name) {
- n = (int)strlen(qname) + 1; /* for the \0 */
- if (n > buflen || n >= MAXHOSTNAMELEN)
- goto no_recovery;
- strcpy(bp, qname);
- host.h_name = bp;
- bp += n;
- buflen -= n;
- }
- if (_res.options & RES_USE_INET6)
- _map_v4v6_hostent(&host, &bp, &buflen);
- h_errno = NETDB_SUCCESS;
- return (&host);
- }
- no_recovery:
- h_errno = NO_RECOVERY;
- return (NULL);
-}
-
-struct hostent *
-__dns_getanswer(const char *answer, int anslen, const char *qname, int qtype)
-{
- switch(qtype) {
- case T_AAAA:
- host.h_addrtype = AF_INET6;
- host.h_length = IN6ADDRSZ;
- break;
- case T_A:
- default:
- host.h_addrtype = AF_INET;
- host.h_length = INADDRSZ;
- break;
- }
-
- return(gethostanswer((const querybuf *)answer, anslen, qname, qtype));
-}
-
-struct hostent *
-_gethostbydnsname(const char *name, int af)
-{
- querybuf buf;
- register const char *cp;
- char *bp;
- int n, size, type, len;
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
- h_errno = NETDB_INTERNAL;
- return (NULL);
- }
-
- switch (af) {
- case AF_INET:
- size = INADDRSZ;
- type = T_A;
- break;
- case AF_INET6:
- size = IN6ADDRSZ;
- type = T_AAAA;
- break;
- default:
- h_errno = NETDB_INTERNAL;
- errno = EAFNOSUPPORT;
- return (NULL);
- }
-
- host.h_addrtype = af;
- host.h_length = size;
-
- /*
- * if there aren't any dots, it could be a user-level alias.
- * this is also done in res_query() since we are not the only
- * function that looks up host names.
- */
- if (!strchr(name, '.') && ( NULL != (cp = __hostalias(name))))
- name = cp;
-
- /*
- * disallow names consisting only of digits/dots, unless
- * they end in a dot.
- */
- if (isdigit(name[0]))
- for (cp = name;; ++cp) {
- if (!*cp) {
- if (*--cp == '.')
- break;
- /*
- * All-numeric, no dot at the end.
- * Fake up a hostent as if we'd actually
- * done a lookup.
- */
- if (inet_pton(af, name, host_addr) <= 0) {
- h_errno = HOST_NOT_FOUND;
- return (NULL);
- }
- strncpy(hostbuf, name, MAXDNAME);
- hostbuf[MAXDNAME] = '\0';
- bp = hostbuf + MAXDNAME;
- len = sizeof hostbuf - MAXDNAME;
- host.h_name = hostbuf;
- host.h_aliases = host_aliases;
- host_aliases[0] = NULL;
- h_addr_ptrs[0] = (char *)host_addr;
- h_addr_ptrs[1] = NULL;
- host.h_addr_list = h_addr_ptrs;
- if (_res.options & RES_USE_INET6)
- _map_v4v6_hostent(&host, &bp, &len);
- h_errno = NETDB_SUCCESS;
- return (&host);
- }
- if (!isdigit(*cp) && *cp != '.')
- break;
- }
- if ((isxdigit(name[0]) && strchr(name, ':') != NULL) ||
- name[0] == ':')
- for (cp = name;; ++cp) {
- if (!*cp) {
- if (*--cp == '.')
- break;
- /*
- * All-IPv6-legal, no dot at the end.
- * Fake up a hostent as if we'd actually
- * done a lookup.
- */
- if (inet_pton(af, name, host_addr) <= 0) {
- h_errno = HOST_NOT_FOUND;
- return (NULL);
- }
- strncpy(hostbuf, name, MAXDNAME);
- hostbuf[MAXDNAME] = '\0';
- bp = hostbuf + MAXDNAME;
- len = sizeof hostbuf - MAXDNAME;
- host.h_name = hostbuf;
- host.h_aliases = host_aliases;
- host_aliases[0] = NULL;
- h_addr_ptrs[0] = (char *)host_addr;
- h_addr_ptrs[1] = NULL;
- host.h_addr_list = h_addr_ptrs;
- h_errno = NETDB_SUCCESS;
- return (&host);
- }
- if (!isxdigit(*cp) && *cp != ':' && *cp != '.')
- break;
- }
-
- if ((n = res_search(name, C_IN, type, buf.buf, sizeof(buf))) < 0) {
- dprintf("res_search failed (%d)\n", n);
- return (NULL);
- }
- return (gethostanswer(&buf, n, name, type));
-}
-
-struct hostent *
-_gethostbydnsaddr(const char *addr, int len, int af)
-{
- const u_char *uaddr = (const u_char *)addr;
- static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff };
- static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 };
- int n, size;
- querybuf buf;
- register struct hostent *hp;
- char qbuf[MAXDNAME+1], *qp;
-#ifdef SUNSECURITY
- register struct hostent *rhp;
- char **haddr;
- u_long old_options;
- char hname2[MAXDNAME+1];
-#endif /*SUNSECURITY*/
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
- h_errno = NETDB_INTERNAL;
- return (NULL);
- }
- if (af == AF_INET6 && len == IN6ADDRSZ &&
- (!bcmp(uaddr, mapped, sizeof mapped) ||
- !bcmp(uaddr, tunnelled, sizeof tunnelled))) {
- /* Unmap. */
- addr += sizeof mapped;
- uaddr += sizeof mapped;
- af = AF_INET;
- len = INADDRSZ;
- }
- switch (af) {
- case AF_INET:
- size = INADDRSZ;
- break;
- case AF_INET6:
- size = IN6ADDRSZ;
- break;
- default:
- errno = EAFNOSUPPORT;
- h_errno = NETDB_INTERNAL;
- return (NULL);
- }
- if (size != len) {
- errno = EINVAL;
- h_errno = NETDB_INTERNAL;
- return (NULL);
- }
- switch (af) {
- case AF_INET:
- (void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
- (uaddr[3] & 0xff),
- (uaddr[2] & 0xff),
- (uaddr[1] & 0xff),
- (uaddr[0] & 0xff));
- break;
- case AF_INET6:
- qp = qbuf;
- for (n = IN6ADDRSZ - 1; n >= 0; n--) {
- qp += SPRINTF((qp, "%x.%x.",
- uaddr[n] & 0xf,
- (uaddr[n] >> 4) & 0xf));
- }
- strcpy(qp, "ip6.int");
- break;
- default:
- abort();
- }
- n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, sizeof buf.buf);
- if (n < 0) {
- dprintf("res_query failed (%d)\n", n);
- return (NULL);
- }
- if ( NULL == (hp = gethostanswer(&buf, n, qbuf, T_PTR)))
- return (NULL); /* h_errno was set by gethostanswer() */
-#ifdef SUNSECURITY
- if (af == AF_INET) {
- /*
- * turn off search as the name should be absolute,
- * 'localhost' should be matched by defnames
- */
- strncpy(hname2, hp->h_name, MAXDNAME);
- hname2[MAXDNAME] = '\0';
- old_options = _res.options;
- _res.options &= ~RES_DNSRCH;
- _res.options |= RES_DEFNAMES;
- if (!(rhp = gethostbyname(hname2))) {
-#ifdef _ORG_FREEBSD_
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostbyaddr: No A record for %s (verifying [%s])",
- hname2, inet_ntoa(*((struct in_addr *)addr)));
-#endif
- _res.options = old_options;
- h_errno = HOST_NOT_FOUND;
- return (NULL);
- }
- _res.options = old_options;
- for (haddr = rhp->h_addr_list; *haddr; haddr++)
- if (!memcmp(*haddr, addr, INADDRSZ))
- break;
- if (!*haddr) {
-#ifdef _ORG_FREEBSD_
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostbyaddr: A record of %s != PTR record [%s]",
- hname2, inet_ntoa(*((struct in_addr *)addr)));
-#endif
- h_errno = HOST_NOT_FOUND;
- return (NULL);
- }
- }
-#endif /*SUNSECURITY*/
- hp->h_addrtype = af;
- hp->h_length = len;
- bcopy(addr, host_addr, len);
- h_addr_ptrs[0] = (char *)host_addr;
- h_addr_ptrs[1] = NULL;
- if (af == AF_INET && (_res.options & RES_USE_INET6)) {
- _map_v4v6_address((char*)host_addr, (char*)host_addr);
- hp->h_addrtype = AF_INET6;
- hp->h_length = IN6ADDRSZ;
- }
- h_errno = NETDB_SUCCESS;
- return (hp);
-}
-
-#ifdef RESOLVSORT
-static void
-addrsort(char **ap, int num)
-{
- short i, j;
- char **p;
- short aval[MAXADDRS];
- short needsort = 0;
-
- p = ap;
- for (i = 0; i < num; i++, p++) {
- for (j = 0 ; (unsigned)j < _res.nsort; j++)
- if (_res.sort_list[j].addr.s_addr ==
- (((struct in_addr *)(*p))->s_addr & _res.sort_list[j].mask))
- break;
- aval[i] = j;
- if (needsort == 0 && i > 0 && j < aval[i-1])
- needsort = i;
- }
- if (!needsort)
- return;
-
- while (needsort < num) {
- for (j = needsort - 1; j >= 0; j--) {
- if (aval[j] > aval[j+1]) {
- char *hp;
-
- i = aval[j];
- aval[j] = aval[j+1];
- aval[j+1] = i;
-
- hp = ap[j];
- ap[j] = ap[j+1];
- ap[j+1] = hp;
-
- } else
- break;
- }
- needsort++;
- }
-}
-#endif
-void
-_sethostdnsent(int stayopen)
-{
- if ((_res.options & RES_INIT) == 0 && res_init() == -1)
- return;
- if (stayopen)
- _res.options |= RES_STAYOPEN | RES_USEVC;
-}
-
-void
-_endhostdnsent()
-{
- _res.options &= ~(RES_STAYOPEN | RES_USEVC);
- res_close();
-}
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