+++ /dev/null
-Microsoft Developer Studio Workspace File, Format Version 6.00\r
-# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!\r
-\r
-###############################################################################\r
-\r
-Project: "bindlib"=.\bindlib.dsp - Package Owner=<4>\r
-\r
-Package=<5>\r
-{{{\r
-}}}\r
-\r
-Package=<4>\r
-{{{\r
-}}}\r
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-###############################################################################\r
-\r
-Global:\r
-\r
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-{{{\r
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-\r
-Package=<3>\r
-{{{\r
-}}}\r
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-###############################################################################\r
-\r
+++ /dev/null
-/*
- * ++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--
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <netdb.h>
-#include <resolv.h>
-#include <ctype.h>
-#include <errno.h>
-#ifndef WINNT
-#include <syslog.h>
-#endif
-
-#ifndef LOG_AUTH
-#define LOG_AUTH 0
-#endif
-
-#define MULTI_PTRS_ARE_ALIASES 1 /* XXX - experimental */
-
-#if defined(BSD) && (BSD >= 199103) && defined(AF_INET6)
-#include <stdlib.h>
-#include <string.h>
-#else
-#include "conf/portability.h"
-#endif
-
-#if defined(USE_OPTIONS_H)
-#include <conf/options.h>
-#endif
-
-#ifdef SPRINTF_CHAR
-#define SPRINTF(x) strlen(sprintf/**/x)
-#else
-#define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-#ifdef WINNT
-extern char *pathhosts;
-extern int res_paths_initialized;
-extern init_res_paths();
-#endif
-
-#define MAXALIASES 35
-#define MAXADDRS 35
-
-static const char AskedForGot[] =
- "gethostby*.getanswer: 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 */
-static FILE *hostf = NULL;
-static int stayopen = 0;
-
-int inet_pton();
-static void map_v4v6_address __P((const char *src, char *dst));
-static void map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len));
-
-#ifdef RESOLVSORT
-static void addrsort __P((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;
-
-#ifndef WINNT
-extern int h_errno;
-#endif
-
-#ifdef DEBUG
-static void
-dprintf(msg, num)
- char *msg;
- int num;
-{
- if (_res.options & RES_DEBUG) {
- int save = errno;
-
- printf(msg, num);
-#ifndef WINNT
- errno = save;
-#else
- WSASetLastError(save);
- SetLastError(save);
-#endif
- }
-}
-#else
-#define dprintf(msg, num) /*nada*/
-#endif
-
-#ifndef WINNT
-#define BOUNDED_INCR(x) \
- do { \
- cp += x; \
- if (cp > eom) { \
- h_errno = NO_RECOVERY; \
- return (NULL); \
- } \
- } while (0)
-
-#else
-
-#define BOUNDED_INCR(x) \
- do { \
- cp += x; \
- if (cp > eom) { \
- WSASetLastError(NO_RECOVERY); \
- return (NULL); \
- } \
- } while (0)
-
-#endif
-
-#ifndef WINNT
-#define BOUNDS_CHECK(ptr, count) \
- do { \
- if ((ptr) + (count) > eom) { \
- h_errno = NO_RECOVERY; \
- return (NULL); \
- } \
- } while (0)
-#else
-#define BOUNDS_CHECK(ptr, count) \
- do { \
- if ((ptr) + (count) > eom) { \
- WSASetLastError(NO_RECOVERY); \
- return (NULL); \
- } \
- } while (0)
-#endif
-
-static struct hostent *
-getanswer(answer, anslen, qname, qtype)
- 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) __P((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:
- return (NULL); /* XXX should be abort(); */
- }
- /*
- * find first satisfactory answer
- */
- hp = &answer->hdr;
- ancount = ntohs((u_short)hp->ancount);
- qdcount = ntohs((u_short)hp->qdcount);
- bp = hostbuf;
- buflen = sizeof hostbuf;
- cp = answer->buf;
- BOUNDED_INCR(HFIXEDSZ);
- if (qdcount != 1) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
- }
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !(*name_ok)(bp)) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- 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 = strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- 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;
- 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 + INT32SZ; /* class, 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) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
- }
- /* Store alias. */
- *ap++ = bp;
- n = strlen(bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN) {
- had_error++;
- continue;
- }
- bp += n;
- buflen -= n;
- /* Get canonical name. */
- n = 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) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
- }
- /* Get canonical name. */
- n = 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) {
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"",
- qname, p_class(C_IN), p_type(qtype),
- p_type(type));
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- switch (type) {
- case T_PTR:
- if (strcasecmp(tname, bp) != 0) {
- syslog(LOG_NOTICE|LOG_AUTH,
- (char *) AskedForGot, qname, bp);
- 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) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
- }
- if (!haveanswer)
- host.h_name = bp;
- else if (ap < &host_aliases[MAXALIASES-1])
- *ap++ = bp;
- else
- n = -1;
- if (n != -1) {
- n = 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);
- }
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- return (&host);
-#endif
- case T_A:
- case T_AAAA:
- if (strcasecmp(host.h_name, bp) != 0) {
- syslog(LOG_NOTICE|LOG_AUTH,
- (char *)AskedForGot, host.h_name, bp);
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
- if (n != host.h_length) {
- cp += n;
- continue;
- }
- if (!haveanswer) {
- register int nn;
-
- host.h_name = bp;
- nn = strlen(bp) + 1; /* for the \0 */
- bp += nn;
- buflen -= nn;
- }
-
- bp += sizeof(align) - ((u_long)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;
- }
- bcopy(cp, *hap++ = bp, n);
- bp += n;
- buflen -= n;
- cp += n;
- if (cp != erdata) {
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
- }
- break;
- default:
- abort();
- }
- 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 = 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);
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- return (&host);
- }
- no_recovery:
-#ifndef WINNT
- h_errno = NO_RECOVERY;
-#else
- WSASetLastError(NO_RECOVERY);
-#endif
- return (NULL);
-}
-
-
-struct hostent *
-gethostbyname2(name, af)
- const char *name;
- int af;
-{
- querybuf buf;
- register const char *cp;
- char *bp;
- int n, size, type, len;
- extern struct hostent *_gethtbyname2();
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (NULL);
- }
-
- switch (af) {
- case AF_INET:
- size = INADDRSZ;
- type = T_A;
- break;
- case AF_INET6:
- size = IN6ADDRSZ;
- type = T_AAAA;
- break;
- default:
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
- errno = EAFNOSUPPORT;
-#else
- WSASetLastError(NETDB_INTERNAL);
- SetLastError(WSAEAFNOSUPPORT);
-#endif
- 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, '.') && (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) {
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- 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);
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- 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) {
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- 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;
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- 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);
- if (errno == ECONNREFUSED)
- return (_gethtbyname2(name, af));
- return (NULL);
- }
- return (getanswer(&buf, n, name, type));
-}
-
-struct hostent *
-#ifndef WINNT
-gethostbyname(name)
-#else
-gethostbyname_nt(name)
-#endif
- const char *name;
-{
- struct hostent *hp;
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (NULL);
- }
- if (_res.options & RES_USE_INET6) {
- hp = gethostbyname2(name, AF_INET6);
- if (hp)
- return (hp);
- }
- return (gethostbyname2(name, AF_INET));
-}
-
-struct hostent *
-#ifndef WINNT
-gethostbyaddr(addr, len, af)
-#else
-gethostbyaddr_nt(addr, len, af)
-#endif
- const char *addr; /* XXX should have been def'd as u_char! */
- int len, 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*/
-extern struct hostent *_gethtbyaddr();
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (0);
- }
- 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:
-#ifndef WINNT
- errno = EAFNOSUPPORT;
- h_errno = NETDB_INTERNAL;
-#else
- SetLastError(WSAEAFNOSUPPORT);
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (0);
- }
- if (size != len) {
-#ifndef WINNT
- errno = EINVAL;
- h_errno = NETDB_INTERNAL;
-#else
- SetLastError(WSAEINVAL);
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (0);
- }
- 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);
- if (errno == ECONNREFUSED)
- return (_gethtbyaddr(addr, len, af));
- return (0);
- }
- if (!(hp = getanswer(&buf, n, qbuf, T_PTR)))
- return (0); /* h_errno was set by getanswer() */
-#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_nt(hname2))) {
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostbyaddr: No A record for %s (verifying [%s])",
- hname2, inet_ntoa(*((struct in_addr *)addr)));
- _res.options = old_options;
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- return (NULL);
- }
- _res.options = old_options;
- for (haddr = rhp->h_addr_list; *haddr; haddr++)
- if (!memcmp(*haddr, addr, INADDRSZ))
- break;
- if (!*haddr) {
- syslog(LOG_NOTICE|LOG_AUTH,
- "gethostbyaddr: A record of %s != PTR record [%s]",
- hname2, inet_ntoa(*((struct in_addr *)addr)));
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- 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;
- }
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- return (hp);
-}
-
-void
-_sethtent(f)
- int f;
-{
-
-#ifndef WINNT
- if (!hostf)
- hostf = fopen(_PATH_HOSTS, "r" );
-#else
- if (!res_paths_initialized)
- init_res_paths();
-
- if (!hostf)
- hostf = fopen(pathhosts, "r" );
-#endif
-
- else
- rewind(hostf);
- stayopen = f;
-}
-
-void
-_endhtent()
-{
- if (hostf && !stayopen) {
- (void) fclose(hostf);
- hostf = NULL;
- }
-}
-
-struct hostent *
-_gethtent()
-{
- char *p;
- register char *cp, **q;
- int af, len;
-
-#ifndef WINNT
- if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) {
-#else
- if (!res_paths_initialized)
- init_res_paths();
-
- if (!hostf && !(hostf = fopen(pathhosts, "r" ))) {
-#endif
-
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (NULL);
- }
- again:
- if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) {
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- return (NULL);
- }
- if (*p == '#')
- goto again;
- if (!(cp = strpbrk(p, "#\n")))
- goto again;
- *cp = '\0';
- if (!(cp = strpbrk(p, " \t")))
- goto again;
- *cp++ = '\0';
- if (inet_pton(AF_INET6, p, host_addr) > 0) {
- af = AF_INET6;
- len = IN6ADDRSZ;
- } else if (inet_pton(AF_INET, p, host_addr) > 0) {
- if (_res.options & RES_USE_INET6) {
- map_v4v6_address((char*)host_addr, (char*)host_addr);
- af = AF_INET6;
- len = IN6ADDRSZ;
- } else {
- af = AF_INET;
- len = INADDRSZ;
- }
- } else {
- goto again;
- }
- h_addr_ptrs[0] = (char *)host_addr;
- h_addr_ptrs[1] = NULL;
- host.h_addr_list = h_addr_ptrs;
- host.h_length = len;
- host.h_addrtype = af;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- host.h_name = cp;
- q = host.h_aliases = host_aliases;
- if (cp = strpbrk(cp, " \t"))
- *cp++ = '\0';
- while (cp && *cp) {
- if (*cp == ' ' || *cp == '\t') {
- cp++;
- continue;
- }
- if (q < &host_aliases[MAXALIASES - 1])
- *q++ = cp;
- if (cp = strpbrk(cp, " \t"))
- *cp++ = '\0';
- }
- *q = NULL;
-#ifndef WINNT
- h_errno = NETDB_SUCCESS;
-#else
- WSASetLastError(NETDB_SUCCESS);
-#endif
- return (&host);
-}
-
-struct hostent *
-_gethtbyname(name)
- const char *name;
-{
- extern struct hostent *_gethtbyname2();
- struct hostent *hp;
-
- if (_res.options & RES_USE_INET6) {
- hp = _gethtbyname2(name, AF_INET6);
- if (hp)
- return (hp);
- }
- return (_gethtbyname2(name, AF_INET));
-}
-
-struct hostent *
-_gethtbyname2(name, af)
- const char *name;
- int af;
-{
- register struct hostent *p;
- register char **cp;
-
- _sethtent(0);
- while (p = _gethtent()) {
- if (p->h_addrtype != af)
- continue;
- if (strcasecmp(p->h_name, name) == 0)
- break;
- for (cp = p->h_aliases; *cp != 0; cp++)
- if (strcasecmp(*cp, name) == 0)
- goto found;
- }
- found:
- _endhtent();
- return (p);
-}
-
-struct hostent *
-_gethtbyaddr(addr, len, af)
- const char *addr;
- int len, af;
-{
- register struct hostent *p;
-
- _sethtent(0);
- while (p = _gethtent())
- if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len))
- break;
- _endhtent();
- return (p);
-}
-
-static void
-map_v4v6_address(src, dst)
- const char *src;
- char *dst;
-{
- u_char *p = (u_char *)dst;
- char tmp[INADDRSZ];
- int i;
-
- /* Stash a temporary copy so our caller can update in place. */
- bcopy(src, tmp, INADDRSZ);
- /* Mark this ipv6 addr as a mapped ipv4. */
- for (i = 0; i < 10; i++)
- *p++ = 0x00;
- *p++ = 0xff;
- *p++ = 0xff;
- /* Retrieve the saved copy and we're done. */
- bcopy(tmp, (void*)p, INADDRSZ);
-}
-
-static void
-map_v4v6_hostent(hp, bpp, lenp)
- struct hostent *hp;
- char **bpp;
- int *lenp;
-{
- char **ap;
-
- if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
- return;
- hp->h_addrtype = AF_INET6;
- hp->h_length = IN6ADDRSZ;
- for (ap = hp->h_addr_list; *ap; ap++) {
- int i = sizeof(align) - ((u_long)*bpp % sizeof(align));
-
- if (*lenp < (i + IN6ADDRSZ)) {
- /* Out of memory. Truncate address list here. XXX */
- *ap = NULL;
- return;
- }
- *bpp += i;
- *lenp -= i;
- map_v4v6_address(*ap, *bpp);
- *ap = *bpp;
- *bpp += IN6ADDRSZ;
- *lenp -= IN6ADDRSZ;
- }
-}
-
-#ifdef RESOLVSORT
-static void
-addrsort(ap, num)
- char **ap;
- int num;
-{
- int i, j;
- char **p;
- short aval[MAXADDRS];
- int 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
-
-#if defined(BSD43_BSD43_NFS) || defined(sun)
-/* some libc's out there are bound internally to these names (UMIPS) */
-void
-ht_sethostent(stayopen)
- int stayopen;
-{
- _sethtent(stayopen);
-}
-
-void
-ht_endhostent()
-{
- _endhtent();
-}
-
-struct hostent *
-ht_gethostbyname(name)
- char *name;
-{
- return (_gethtbyname(name));
-}
-
-struct hostent *
-ht_gethostbyaddr(addr, len, af)
- const char *addr;
- int len, af;
-{
- return (_gethtbyaddr(addr, len, af));
-}
-
-struct hostent *
-gethostent()
-{
- return (_gethtent());
-}
-
-void
-dns_service()
-{
- return;
-}
-
-#undef dn_skipname
-dn_skipname(comp_dn, eom)
- const u_char *comp_dn, *eom;
-{
- return (__dn_skipname(comp_dn, eom));
-}
-#endif /*old-style libc with yp junk in it*/
+++ /dev/null
-/*
- * Copyright (c) 1983 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 Carlos Leandro and Rui Salgueiro
- * Dep. Matematica Universidade de Coimbra, Portugal, Europe
- *
- * 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.
- *
- * from getnetent.c 1.1 (Coimbra) 93/06/02
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <resolv.h>
-#include <netdb.h>
-#include <string.h>
-#ifdef WINNT
-#include "conf/portability.h"
-extern char *pathnetworks;
-extern int res_paths_initialized;
-extern init_res_paths();
-#endif
-
-#ifndef _PATH_NETWORKS
-#define _PATH_NETWORKS "/etc/networks"
-#endif
-
-
-
-#define MAXALIASES 35
-
-static FILE *netf;
-static char line[BUFSIZ+1];
-static struct netent net;
-static char *net_aliases[MAXALIASES];
-int _net_stayopen;
-
-void _setnetent __P((int));
-void _endnetent __P((void));
-
-void
-setnetent(stayopen)
- int stayopen;
-{
-
- sethostent(stayopen);
- _setnetent(stayopen);
-}
-
-void
-endnetent()
-{
-
- endhostent();
- _endnetent();
-}
-
-void
-_setnetent(f)
- int f;
-{
-
-#ifndef WINNT
- if (netf == NULL)
- netf = fopen(_PATH_NETWORKS, "r" );
-#else
- if (!res_paths_initialized)
- init_res_paths();
-
- if (netf == NULL)
- netf = fopen(pathnetworks, "r" );
-#endif
- else
- rewind(netf);
- _net_stayopen |= f;
-}
-
-void
-_endnetent()
-{
-
- if (netf) {
- fclose(netf);
- netf = NULL;
- }
- _net_stayopen = 0;
-}
-
-struct netent *
-getnetent()
-{
- char *p;
- register char *cp, **q;
-
-#ifndef WINNT
- if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
-#else
- if (!res_paths_initialized)
- init_res_paths();
-
- if (netf == NULL && (netf = fopen(pathnetworks, "r" )) == NULL)
-#endif
-
- return (NULL);
-again:
- p = fgets(line, sizeof line, netf);
- if (p == NULL)
- return (NULL);
- if (*p == '#')
- goto again;
- cp = strpbrk(p, "#\n");
- if (cp == NULL)
- goto again;
- *cp = '\0';
- net.n_name = p;
- cp = strpbrk(p, " \t");
- if (cp == NULL)
- goto again;
- *cp++ = '\0';
- while (*cp == ' ' || *cp == '\t')
- cp++;
- p = strpbrk(cp, " \t");
- if (p != NULL)
- *p++ = '\0';
- net.n_net = inet_network(cp);
- net.n_addrtype = AF_INET;
- q = net.n_aliases = net_aliases;
- if (p != NULL) {
- cp = p;
- while (cp && *cp) {
- if (*cp == ' ' || *cp == '\t') {
- cp++;
- continue;
- }
- if (q < &net_aliases[MAXALIASES - 1])
- *q++ = cp;
- cp = strpbrk(cp, " \t");
- if (cp != NULL)
- *cp++ = '\0';
- }
- }
- *q = NULL;
- return (&net);
-}
+++ /dev/null
-/* Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
- * Dep. Matematica Universidade de Coimbra, Portugal, Europe
- *
- * 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.
- */
-/*
- * Copyright (c) 1983, 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getnetbyaddr.c 8.1 (Berkeley) 6/4/93";
-static char sccsid_[] = "from getnetnamadr.c 1.4 (Coimbra) 93/06/03";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <netdb.h>
-#include <resolv.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-
-#ifndef WINNT
-extern int h_errno;
-#else
-#include "conf/portability.h"
-#endif
-
-#if defined(mips) && defined(SYSTYPE_BSD43)
-extern int errno;
-#endif
-
-struct netent *_getnetbyaddr __P((u_long net, int type));
-struct netent *_getnetbyname __P((const char *name));
-
-#define BYADDR 0
-#define BYNAME 1
-#define MAXALIASES 35
-
-#if PACKETSZ > 1024
-#define MAXPACKET PACKETSZ
-#else
-#define MAXPACKET 1024
-#endif
-
-typedef union {
- HEADER hdr;
- u_char buf[MAXPACKET];
-} querybuf;
-
-typedef union {
- long al;
- char ac;
-} align;
-
-static struct netent *
-getnetanswer(answer, anslen, net_i)
- querybuf *answer;
- int anslen;
- int net_i;
-{
-
- register HEADER *hp;
- register u_char *cp;
- register int n;
- u_char *eom;
- int type, class, buflen, ancount, qdcount, haveanswer, i, nchar;
- char aux1[30], aux2[30], ans[30], *in, *st, *pauxt, *bp, **ap,
- *paux1 = &aux1[0], *paux2 = &aux2[0], flag = 0;
-static struct netent net_entry;
-static char *net_aliases[MAXALIASES], netbuf[PACKETSZ];
-
- /*
- * find first satisfactory answer
- *
- * answer --> +------------+ ( MESSAGE )
- * | Header |
- * +------------+
- * | Question | the question for the name server
- * +------------+
- * | Answer | RRs answering the question
- * +------------+
- * | Authority | RRs pointing toward an authority
- * | Additional | RRs holding additional information
- * +------------+
- */
- eom = answer->buf + anslen;
- hp = &answer->hdr;
- ancount = ntohs( (u_short) hp->ancount); /* #/records in the answer section */
- qdcount = ntohs( (u_short) hp->qdcount); /* #/entries in the question section */
- bp = netbuf;
- buflen = sizeof(netbuf);
- cp = answer->buf + HFIXEDSZ;
- if (!qdcount) {
- if (hp->aa)
-#ifndef WINNT
- h_errno = HOST_NOT_FOUND;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- else
-#ifndef WINNT
- h_errno = TRY_AGAIN;
-#else
- WSASetLastError(HOST_NOT_FOUND);
-#endif
- return (NULL);
- }
- while (qdcount-- > 0)
- cp += __dn_skipname(cp, eom) + QFIXEDSZ;
- ap = net_aliases;
- *ap = NULL;
- net_entry.n_aliases = net_aliases;
- haveanswer = 0;
- while (--ancount >= 0 && cp < eom) {
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !res_dnok(bp))
- break;
- cp += n;
- ans[0] = '\0';
- (void)strcpy(&ans[0], bp);
- GETSHORT(type, cp);
- GETSHORT(class, cp);
- cp += INT32SZ; /* TTL */
- GETSHORT(n, cp);
- if (class == C_IN && type == T_PTR) {
- n = dn_expand(answer->buf, eom, cp, bp, buflen);
- if ((n < 0) || !res_hnok(bp)) {
- cp += n;
- return (NULL);
- }
- cp += n;
- *ap++ = bp;
- bp += strlen(bp) + 1;
- net_entry.n_addrtype =
- (class == C_IN) ? AF_INET : AF_UNSPEC;
- haveanswer++;
- }
- }
- if (haveanswer) {
- *ap = NULL;
- switch (net_i) {
- case BYADDR:
- net_entry.n_name = *net_entry.n_aliases;
- net_entry.n_net = 0L;
- break;
- case BYNAME:
- in = *net_entry.n_aliases;
- net_entry.n_name = &ans[0];
- aux2[0] = '\0';
- for (i = 0; i < 4; i++) {
- for (st = in, nchar = 0;
- *st != '.';
- st++, nchar++)
- ;
- if (nchar != 1 || *in != '0' || flag) {
- flag = 1;
- (void)strncpy(paux1,
- (i==0) ? in : in-1,
- (i==0) ?nchar : nchar+1);
- paux1[(i==0) ? nchar : nchar+1] = '\0';
- pauxt = paux2;
- paux2 = strcat(paux1, paux2);
- paux1 = pauxt;
- }
- in = ++st;
- }
- net_entry.n_net = inet_network(paux2);
- break;
- }
- net_entry.n_aliases++;
- return (&net_entry);
- }
-#ifndef WINNT
- h_errno = TRY_AGAIN;
-#else
- WSASetLastError(TRY_AGAIN);
-#endif
- return (NULL);
-}
-
-struct netent *
-getnetbyaddr(net, net_type)
- register u_long net;
- register int net_type;
-{
- unsigned int netbr[4];
- int nn, anslen;
- querybuf buf;
- char qbuf[MAXDNAME];
- unsigned long net2;
- struct netent *net_entry;
-
- if (net_type != AF_INET)
- return (_getnetbyaddr(net, net_type));
-
- for (nn = 4, net2 = net; net2; net2 >>= 8)
- netbr[--nn] = net2 & 0xff;
- switch (nn) {
- case 3: /* Class A */
- sprintf(qbuf, "0.0.0.%u.in-addr.arpa", netbr[3]);
- break;
- case 2: /* Class B */
- sprintf(qbuf, "0.0.%u.%u.in-addr.arpa", netbr[3], netbr[2]);
- break;
- case 1: /* Class C */
- sprintf(qbuf, "0.%u.%u.%u.in-addr.arpa", netbr[3], netbr[2],
- netbr[1]);
- break;
- case 0: /* Class D - E */
- sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa", netbr[3], netbr[2],
- netbr[1], netbr[0]);
- break;
- }
- anslen = res_query(qbuf, C_IN, T_PTR, (u_char *)&buf, sizeof(buf));
- if (anslen < 0) {
-#ifdef DEBUG
- if (_res.options & RES_DEBUG)
- printf("res_query failed\n");
-#endif
- if (errno == ECONNREFUSED)
- return (_getnetbyaddr(net, net_type));
- return (NULL);
- }
- net_entry = getnetanswer(&buf, anslen, BYADDR);
- if (net_entry) {
- unsigned u_net = net; /* maybe net should be unsigned ? */
-
- /* Strip trailing zeros */
- while ((u_net & 0xff) == 0 && u_net != 0)
- u_net >>= 8;
- net_entry->n_net = u_net;
- return (net_entry);
- }
- return (_getnetbyaddr(net, net_type));
-}
-
-struct netent *
-getnetbyname(net)
- register const char *net;
-{
- int anslen;
- querybuf buf;
- char qbuf[MAXDNAME];
- struct netent *net_entry;
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (NULL);
- }
- strcpy(&qbuf[0], net);
- anslen = res_search(qbuf, C_IN, T_PTR, (u_char *)&buf, sizeof(buf));
- if (anslen < 0) {
-#ifdef DEBUG
- if (_res.options & RES_DEBUG)
- printf("res_query failed\n");
-#endif
- if (errno == ECONNREFUSED)
- return (_getnetbyname(net));
- return (_getnetbyname(net));
- }
- net_entry = getnetanswer(&buf, anslen, BYNAME);
- if (net_entry)
- return (net_entry);
- return (_getnetbyname(net));
-}
+++ /dev/null
-/*
- * 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$Id$";
-#endif
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/inet.h>
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-static char * inet_net_ntop_ipv4 __P((const u_char *src, int bits,
- char *dst, size_t size));
-
-/*
- * char *
- * inet_net_ntop(af, src, bits, dst, size)
- * convert network number from network to presentation format.
- * generates CIDR style result always.
- * return:
- * pointer to dst, or NULL if an error occurred (check errno).
- * author:
- * Paul Vixie (ISC), July 1996
- */
-char *
-inet_net_ntop(af, src, bits, dst, size)
- int af;
- const void *src;
- int bits;
- char *dst;
- size_t size;
-{
- switch (af) {
- case AF_INET:
- return (inet_net_ntop_ipv4(src, bits, dst, size));
- default:
-
-#ifndef WINNT
- errno = EAFNOSUPPORT;
- return (NULL);
-#else
-
- WSASetLastError(WSAEAFNOSUPPORT);
- SetLastError(WSAEAFNOSUPPORT);
- return (NULL);
-#endif
-
- }
-}
-
-/*
- * static char *
- * inet_net_ntop_ipv4(src, bits, dst, size)
- * convert IPv4 network number from network to presentation format.
- * generates CIDR style result always.
- * return:
- * pointer to dst, or NULL if an error occurred (check errno).
- * note:
- * network byte order assumed. this means 192.5.5.240/28 has
- * 0x11110000 in its fourth octet.
- * author:
- * Paul Vixie (ISC), July 1996
- */
-static char *
-inet_net_ntop_ipv4(src, bits, dst, size)
- const u_char *src;
- int bits;
- char *dst;
- size_t size;
-{
- char *odst = dst;
- char *t;
- u_int m;
- int b;
-
- if (bits < 0 || bits > 32) {
- errno = EINVAL;
- return (NULL);
- }
- if (bits == 0) {
- if (size < sizeof "0")
- goto emsgsize;
- *dst++ = '0';
- *dst = '\0';
- }
-
- /* Format whole octets. */
- for (b = bits / 8; b > 0; b--) {
- if (size < sizeof "255.")
- goto emsgsize;
- t = dst;
- dst += SPRINTF((dst, "%u", *src++));
- if (b > 1) {
- *dst++ = '.';
- *dst = '\0';
- }
- size -= (size_t)(dst - t);
- }
-
- /* Format partial octet. */
- b = bits % 8;
- if (b > 0) {
- if (size < sizeof ".255")
- goto emsgsize;
- t = dst;
- if (dst != odst)
- *dst++ = '.';
- m = ((1 << b) - 1) << (8 - b);
- dst += SPRINTF((dst, "%u", *src & m));
- size -= (size_t)(dst - t);
- }
-
- /* Format CIDR /width. */
- if (size < sizeof "/32")
- goto emsgsize;
- dst += SPRINTF((dst, "/%u", bits));
- return (odst);
-
- emsgsize:
-
- #ifndef WINNT
- errno = EMSGSIZE;
- return (NULL);
-#else
- WSASetLastError(WSAEMSGSIZE);
- SetLastError(WSAEMSGSIZE);
- return (NULL);
-#endif
-
-
-}
+++ /dev/null
-/*
- * 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$Id$";
-#endif
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/inet.h>
-
-#include <errno.h>
-#include <stdio.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-/*
- * char *
- * inet_neta(src, dst, size)
- * format a u_long network number into presentation format.
- * return:
- * pointer to dst, or NULL if an error occurred (check errno).
- * note:
- * format of ``src'' is as for inet_network().
- * author:
- * Paul Vixie (ISC), July 1996
- */
-char *
-inet_neta(src, dst, size)
- u_long src;
- char *dst;
- size_t size;
-{
- char *odst = dst;
- char *tp;
-
- while (src & 0xffffffff) {
- u_char b = (u_char)((src & 0xff000000) >> 24);
-
- src <<= 8;
- if (b) {
- if (size < sizeof "255.")
- goto emsgsize;
- tp = dst;
- dst += SPRINTF((dst, "%u", b));
- if (src != 0L) {
- *dst++ = '.';
- *dst = '\0';
- }
- size -= (size_t)(dst - tp);
- }
- }
- if (dst == odst) {
- if (size < sizeof "0.0.0.0")
- goto emsgsize;
- strcpy(dst, "0.0.0.0");
- }
- return (odst);
-
- emsgsize:
-
- #ifndef WINNT
- errno = EMSGSIZE;
- return (NULL);
-#else
- WSASetLastError(WSAEMSGSIZE);
- SetLastError(WSAEMSGSIZE);
- return (NULL);
-#endif
-
-}
+++ /dev/null
-/*
- * 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#ifndef WINNT
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/nameser.h>
-#include <ctype.h>
-#include <resolv.h>
-
-#include "conf/portability.h"
-
-#if !defined(isxdigit) /* XXX - could be a function */
-static int
-isxdigit(c)
- register int c;
-{
- return ((c >= '0') && (c <= '9')) || ((c >= 'A') && (c <= 'F'));
-}
-#endif
-
-static char
-xtob(c)
- register int c;
-{
- return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
-}
-
-u_int
-inet_nsap_addr(ascii, binary, maxlen)
- const char *ascii;
- u_char *binary;
- u_int maxlen;
-{
- register u_char c, nib;
- u_int len = 0;
-
- while ((c = *ascii++) != '\0' && len < maxlen) {
- if (c == '.' || c == '+' || c == '/')
- continue;
- if (!isascii(c))
- return (0);
- if (islower(c))
- c = toupper(c);
- if (isxdigit(c)) {
- nib = xtob(c);
- if (c = *ascii++) {
- c = toupper(c);
- if (isxdigit(c)) {
- *binary++ = (nib << 4) | xtob(c);
- len++;
- } else
- return (0);
- }
- else
- return (0);
- }
- else
- return (0);
- }
- return (len);
-}
-
-char *
-inet_nsap_ntoa(binlen, binary, ascii)
- int binlen;
- register const u_char *binary;
- register char *ascii;
-{
- register int nib;
- int i;
- static char tmpbuf[255*3];
- char *start;
-
- if (ascii)
- start = ascii;
- else {
- ascii = tmpbuf;
- start = tmpbuf;
- }
-
- if (binlen > 255)
- binlen = 255;
-
- for (i = 0; i < binlen; i++) {
- nib = *binary >> 4;
- *ascii++ = nib + (nib < 10 ? '0' : '7');
- nib = *binary++ & 0x0f;
- *ascii++ = nib + (nib < 10 ? '0' : '7');
- if (((i % 2) == 0 && (i + 1) < binlen))
- *ascii++ = '.';
- }
- *ascii = '\0';
- return (start);
-}
+++ /dev/null
-/*
- * ++Copyright++ 1985, 1989, 1993
- * -
- * Copyright (c) 1985, 1989, 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--
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <netinet/in.h>
-#endif /* WINNT */
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <ctype.h>
-#include <resolv.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <unistd.h>
-# include <stdlib.h>
-# include <string.h>
-#else
-#include "conf/portability.h"
-#endif
-
-#ifdef WINNT
-#include <netdb.h>
-#include "conf/portability.h"
-extern char *pathresconf;
-extern int res_paths_initialized;
-extern init_res_paths();
-#endif
-
-/*-------------------------------------- info about "sortlist" --------------
- * Marc Majka 1994/04/16
- * Allan Nathanson 1994/10/29 (BIND 4.9.3.x)
- *
- * NetInfo resolver configuration directory support.
- *
- * Allow a NetInfo directory to be created in the hierarchy which
- * contains the same information as the resolver configuration file.
- *
- * - The local domain name is stored as the value of the "domain" property.
- * - The Internet address(es) of the name server(s) are stored as values
- * of the "nameserver" property.
- * - The name server addresses are stored as values of the "nameserver"
- * property.
- * - The search list for host-name lookup is stored as values of the
- * "search" property.
- * - The sortlist comprised of IP address netmask pairs are stored as
- * values of the "sortlist" property. The IP address and optional netmask
- * should be seperated by a slash (/) or ampersand (&) character.
- * - Internal resolver variables can be set from the value of the "options"
- * property.
- */
-#if defined(NeXT)
-# include <netinfo/ni.h>
-# define NI_PATH_RESCONF "/locations/resolver"
-# define NI_TIMEOUT 10
-static int netinfo_res_init __P((int *haveenv, int *havesearch));
-#endif
-
-#if defined(USE_OPTIONS_H)
-# include "conf/options.h"
-#endif
-
-static void res_setoptions __P((char *, char *));
-
-#ifdef RESOLVSORT
-static const char sort_mask[] = "/&";
-#define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL)
-static u_int32_t net_mask __P((struct in_addr));
-#endif
-
-#if !defined(isascii) /* XXX - could be a function */
-# define isascii(c) (!(c & 0200))
-#endif
-
-/*
- * Resolver state default settings.
- */
-
-struct __res_state _res
-# if defined(__BIND_RES_TEXT)
- = { RES_TIMEOUT, } /* Motorola, et al. */
-# endif
- ;
-
-/*
- * Set up default settings. If the configuration file exist, the values
- * there will have precedence. Otherwise, the server address is set to
- * INADDR_ANY and the default domain name comes from the gethostname().
- *
- * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1
- * rather than INADDR_ANY ("0.0.0.0") as the default name server address
- * since it was noted that INADDR_ANY actually meant ``the first interface
- * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface,
- * it had to be "up" in order for you to reach your own name server. It
- * was later decided that since the recommended practice is to always
- * install local static routes through 127.0.0.1 for all your network
- * interfaces, that we could solve this problem without a code change.
- *
- * The configuration file should always be used, since it is the only way
- * to specify a default domain. If you are running a server on your local
- * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1"
- * in the configuration file.
- *
- * Return 0 if completes successfully, -1 on error
- */
-int
-res_init()
-{
- register FILE *fp;
- register char *cp, **pp;
- register int n;
- char buf[MAXDNAME];
- int nserv = 0; /* number of nameserver records read from file */
- int haveenv = 0;
- int havesearch = 0;
-#ifdef RESOLVSORT
- int nsort = 0;
- char *net;
-#endif
-#ifndef RFC1535
- int dots;
-#endif
-
-
-#ifdef WINNT
- WORD wVersionRequested;
- WSADATA wsaData;
-
- wVersionRequested = MAKEWORD(1,1);
- if (WSAStartup(wVersionRequested, &wsaData)) {
- syslog(LOG_ERR, "No useable winsock.dll: %m");
- return (-1);
- }
-#endif /* WINNT */
-
- /*
- * These three fields used to be statically initialized. This made
- * it hard to use this code in a shared library. It is necessary,
- * now that we're doing dynamic initialization here, that we preserve
- * the old semantics: if an application modifies one of these three
- * fields of _res before res_init() is called, res_init() will not
- * alter them. Of course, if an application is setting them to
- * _zero_ before calling res_init(), hoping to override what used
- * to be the static default, we can't detect it and unexpected results
- * will follow. Zero for any of these fields would make no sense,
- * so one can safely assume that the applications were already getting
- * unexpected results.
- *
- * _res.options is tricky since some apps were known to diddle the bits
- * before res_init() was first called. We can't replicate that semantic
- * with dynamic initialization (they may have turned bits off that are
- * set in RES_DEFAULT). Our solution is to declare such applications
- * "broken". They could fool us by setting RES_INIT but none do (yet).
- */
- if (!_res.retrans)
- _res.retrans = RES_TIMEOUT;
- if (!_res.retry)
- _res.retry = 4;
- if (!(_res.options & RES_INIT))
- _res.options = RES_DEFAULT;
-
- /*
- * This one used to initialize implicitly to zero, so unless the app
- * has set it to something in particular, we can randomize it now.
- */
- if (!_res.id)
- _res.id = res_randomid();
-
-#ifdef USELOOPBACK
- _res.nsaddr.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1);
-#else
- _res.nsaddr.sin_addr.s_addr = INADDR_ANY;
-#endif
- _res.nsaddr.sin_family = AF_INET;
- _res.nsaddr.sin_port = htons(NAMESERVER_PORT);
- _res.nscount = 1;
- _res.ndots = 1;
- _res.pfcode = 0;
-
- /* Allow user to override the local domain definition */
- if ((cp = getenv("LOCALDOMAIN")) != NULL) {
- (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
- haveenv++;
-
- /*
- * Set search list to be blank-separated strings
- * from rest of env value. Permits users of LOCALDOMAIN
- * to still have a search list, and anyone to set the
- * one that they want to use as an individual (even more
- * important now that the rfc1535 stuff restricts searches)
- */
- cp = _res.defdname;
- pp = _res.dnsrch;
- *pp++ = cp;
- for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) {
- if (*cp == '\n') /* silly backwards compat */
- break;
- else if (*cp == ' ' || *cp == '\t') {
- *cp = 0;
- n = 1;
- } else if (n) {
- *pp++ = cp;
- n = 0;
- havesearch = 1;
- }
- }
- /* null terminate last domain if there are excess */
- while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
- cp++;
- *cp = '\0';
- *pp++ = 0;
- }
-
-#define MATCH(line, name) \
- (!strncmp(line, name, sizeof(name) - 1) && \
- (line[sizeof(name) - 1] == ' ' || \
- line[sizeof(name) - 1] == '\t'))
-
-#ifdef NeXT
- if (netinfo_res_init(&haveenv, &havesearch) == 0)
-#endif
-#ifndef WINNT
- if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) {
-#else
- if (!res_paths_initialized)
- init_res_paths();
-
- if ((fp = fopen(pathresconf, "r")) != NULL) {
-
-#endif
- /* read the config file */
- while (fgets(buf, sizeof(buf), fp) != NULL) {
- /* skip comments */
- if (*buf == ';' || *buf == '#')
- continue;
- /* read default domain name */
- if (MATCH(buf, "domain")) {
- if (haveenv) /* skip if have from environ */
- continue;
- cp = buf + sizeof("domain") - 1;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- if ((*cp == '\0') || (*cp == '\n'))
- continue;
- strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
- if ((cp = strpbrk(_res.defdname, " \t\n")) != NULL)
- *cp = '\0';
- havesearch = 0;
- continue;
- }
- /* set search list */
- if (MATCH(buf, "search")) {
- if (haveenv) /* skip if have from environ */
- continue;
- cp = buf + sizeof("search") - 1;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- if ((*cp == '\0') || (*cp == '\n'))
- continue;
- strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
- if ((cp = strchr(_res.defdname, '\n')) != NULL)
- *cp = '\0';
- /*
- * Set search list to be blank-separated strings
- * on rest of line.
- */
- cp = _res.defdname;
- pp = _res.dnsrch;
- *pp++ = cp;
- for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) {
- if (*cp == ' ' || *cp == '\t') {
- *cp = 0;
- n = 1;
- } else if (n) {
- *pp++ = cp;
- n = 0;
- }
- }
- /* null terminate last domain if there are excess */
- while (*cp != '\0' && *cp != ' ' && *cp != '\t')
- cp++;
- *cp = '\0';
- *pp++ = 0;
- havesearch = 1;
- continue;
- }
- /* read nameservers to query */
- if (MATCH(buf, "nameserver") && nserv < MAXNS) {
- struct in_addr a;
-
- cp = buf + sizeof("nameserver") - 1;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- if ((*cp != '\0') && (*cp != '\n') && inet_aton(cp, &a)) {
- _res.nsaddr_list[nserv].sin_addr = a;
- _res.nsaddr_list[nserv].sin_family = AF_INET;
- _res.nsaddr_list[nserv].sin_port =
- htons(NAMESERVER_PORT);
- nserv++;
- }
- continue;
- }
-#ifdef RESOLVSORT
- if (MATCH(buf, "sortlist")) {
- struct in_addr a;
-
- cp = buf + sizeof("sortlist") - 1;
- while (nsort < MAXRESOLVSORT) {
- while (*cp == ' ' || *cp == '\t')
- cp++;
- if (*cp == '\0' || *cp == '\n' || *cp == ';')
- break;
- net = cp;
- while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&
- isascii(*cp) && !isspace(*cp))
- cp++;
- n = *cp;
- *cp = 0;
- if (inet_aton(net, &a)) {
- _res.sort_list[nsort].addr = a;
- if (ISSORTMASK(n)) {
- *cp++ = n;
- net = cp;
- while (*cp && *cp != ';' &&
- isascii(*cp) && !isspace(*cp))
- cp++;
- n = *cp;
- *cp = 0;
- if (inet_aton(net, &a)) {
- _res.sort_list[nsort].mask = a.s_addr;
- } else {
- _res.sort_list[nsort].mask =
- net_mask(_res.sort_list[nsort].addr);
- }
- } else {
- _res.sort_list[nsort].mask =
- net_mask(_res.sort_list[nsort].addr);
- }
- nsort++;
- }
- *cp = n;
- }
- continue;
- }
-#endif
- if (MATCH(buf, "options")) {
- res_setoptions(buf + sizeof("options") - 1, "conf");
- continue;
- }
- }
- if (nserv > 1)
- _res.nscount = nserv;
-#ifdef RESOLVSORT
- _res.nsort = nsort;
-#endif
- (void) fclose(fp);
- }
- if (_res.defdname[0] == 0 &&
- gethostname(buf, sizeof(_res.defdname) - 1) == 0 &&
- (cp = strchr(buf, '.')) != NULL)
- strcpy(_res.defdname, cp + 1);
-
- /* find components of local domain that might be searched */
- if (havesearch == 0) {
- pp = _res.dnsrch;
- *pp++ = _res.defdname;
- *pp = NULL;
-
-#ifndef RFC1535
- dots = 0;
- for (cp = _res.defdname; *cp; cp++)
- dots += (*cp == '.');
-
- cp = _res.defdname;
- while (pp < _res.dnsrch + MAXDFLSRCH) {
- if (dots < LOCALDOMAINPARTS)
- break;
- cp = strchr(cp, '.') + 1; /* we know there is one */
- *pp++ = cp;
- dots--;
- }
- *pp = NULL;
-#ifdef DEBUG
- if (_res.options & RES_DEBUG) {
- printf(";; res_init()... default dnsrch list:\n");
- for (pp = _res.dnsrch; *pp; pp++)
- printf(";;\t%s\n", *pp);
- printf(";;\t..END..\n");
- }
-#endif /* DEBUG */
-#endif /* !RFC1535 */
- }
-
- if ((cp = getenv("RES_OPTIONS")) != NULL)
- res_setoptions(cp, "env");
- _res.options |= RES_INIT;
- return (0);
-}
-
-static void
-res_setoptions(options, source)
- char *options, *source;
-{
- char *cp = options;
- int i;
-
-#ifdef DEBUG
- if (_res.options & RES_DEBUG)
- printf(";; res_setoptions(\"%s\", \"%s\")...\n",
- options, source);
-#endif
- while (*cp) {
- /* skip leading and inner runs of spaces */
- while (*cp == ' ' || *cp == '\t')
- cp++;
- /* search for and process individual options */
- if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {
- i = atoi(cp + sizeof("ndots:") - 1);
- if (i <= RES_MAXNDOTS)
- _res.ndots = i;
- else
- _res.ndots = RES_MAXNDOTS;
-#ifdef DEBUG
- if (_res.options & RES_DEBUG)
- printf(";;\tndots=%d\n", _res.ndots);
-#endif
- } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
-#ifdef DEBUG
- if (!(_res.options & RES_DEBUG)) {
- printf(";; res_setoptions(\"%s\", \"%s\")..\n",
- options, source);
- _res.options |= RES_DEBUG;
- }
- printf(";;\tdebug\n");
-#endif
- } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {
- _res.options |= RES_USE_INET6;
- } else {
- /* XXX - print a warning here? */
- }
- /* skip to next run of spaces */
- while (*cp && *cp != ' ' && *cp != '\t')
- cp++;
- }
-}
-
-#ifdef RESOLVSORT
-/* XXX - should really support CIDR which means explicit masks always. */
-static u_int32_t
-net_mask(in) /* XXX - should really use system's version of this */
- struct in_addr in;
-{
- register u_int32_t i = ntohl(in.s_addr);
-
- if (IN_CLASSA(i))
- return (htonl(IN_CLASSA_NET));
- else if (IN_CLASSB(i))
- return (htonl(IN_CLASSB_NET));
- return (htonl(IN_CLASSC_NET));
-}
-#endif
-
-#ifdef NeXT
-static int
-netinfo_res_init(haveenv, havesearch)
- int *haveenv;
- int *havesearch;
-{
- register int n;
- void *domain, *parent;
- ni_id dir;
- ni_status status;
- ni_namelist nl;
- int nserv = 0;
-#ifdef RESOLVSORT
- int nsort = 0;
-#endif
-
- status = ni_open(NULL, ".", &domain);
- if (status == NI_OK) {
- ni_setreadtimeout(domain, NI_TIMEOUT);
- ni_setabort(domain, 1);
-
- /* climb the NetInfo hierarchy to find a resolver directory */
- while (status == NI_OK) {
- status = ni_pathsearch(domain, &dir, NI_PATH_RESCONF);
- if (status == NI_OK) {
- /* found a resolver directory */
-
- if (*haveenv == 0) {
- /* get the default domain name */
- status = ni_lookupprop(domain, &dir, "domain", &nl);
- if (status == NI_OK && nl.ni_namelist_len > 0) {
- (void)strncpy(_res.defdname,
- nl.ni_namelist_val[0],
- sizeof(_res.defdname) - 1);
- _res.defdname[sizeof(_res.defdname) - 1] = '\0';
- ni_namelist_free(&nl);
- *havesearch = 0;
- }
-
- /* get search list */
- status = ni_lookupprop(domain, &dir, "search", &nl);
- if (status == NI_OK && nl.ni_namelist_len > 0) {
- (void)strncpy(_res.defdname,
- nl.ni_namelist_val[0],
- sizeof(_res.defdname) - 1);
- _res.defdname[sizeof(_res.defdname) - 1] = '\0';
- /* copy */
- for (n = 0;
- n < nl.ni_namelist_len && n < MAXDNSRCH;
- n++) {
- /* duplicate up to MAXDNSRCH servers */
- char *cp = nl.ni_namelist_val[n];
- _res.dnsrch[n] =
- strcpy((char *)malloc(strlen(cp) + 1), cp);
- }
- ni_namelist_free(&nl);
- *havesearch = 1;
- }
- }
-
- /* get list of nameservers */
- status = ni_lookupprop(domain, &dir, "nameserver", &nl);
- if (status == NI_OK && nl.ni_namelist_len > 0) {
- /* copy up to MAXNS servers */
- for (n = 0;
- n < nl.ni_namelist_len && nserv < MAXNS;
- n++) {
- struct in_addr a;
-
- if (inet_aton(nl.ni_namelist_val[n], &a)) {
- _res.nsaddr_list[nserv].sin_addr = a;
- _res.nsaddr_list[nserv].sin_family = AF_INET;
- _res.nsaddr_list[nserv].sin_port =
- htons(NAMESERVER_PORT);
- nserv++;
- }
- }
- ni_namelist_free(&nl);
- }
-
- if (nserv > 1)
- _res.nscount = nserv;
-
-#ifdef RESOLVSORT
- /* get sort order */
- status = ni_lookupprop(domain, &dir, "sortlist", &nl);
- if (status == NI_OK && nl.ni_namelist_len > 0) {
-
- /* copy up to MAXRESOLVSORT address/netmask pairs */
- for (n = 0;
- n < nl.ni_namelist_len && nsort < MAXRESOLVSORT;
- n++) {
- char ch;
- char *cp;
- const char *sp;
- struct in_addr a;
-
- cp = NULL;
- for (sp = sort_mask; *sp; sp++) {
- char *cp1;
- cp1 = strchr(nl.ni_namelist_val[n], *sp);
- if (cp && cp1)
- cp = (cp < cp1)? cp : cp1;
- else if (cp1)
- cp = cp1;
- }
- if (cp != NULL) {
- ch = *cp;
- *cp = '\0';
- break;
- }
- if (inet_aton(nl.ni_namelist_val[n], &a)) {
- _res.sort_list[nsort].addr = a;
- if (*cp && ISSORTMASK(ch)) {
- *cp++ = ch;
- if (inet_aton(cp, &a)) {
- _res.sort_list[nsort].mask = a.s_addr;
- } else {
- _res.sort_list[nsort].mask =
- net_mask(_res.sort_list[nsort].addr);
- }
- } else {
- _res.sort_list[nsort].mask =
- net_mask(_res.sort_list[nsort].addr);
- }
- nsort++;
- }
- }
- ni_namelist_free(&nl);
- }
-
- _res.nsort = nsort;
-#endif
-
- /* get resolver options */
- status = ni_lookupprop(domain, &dir, "options", &nl);
- if (status == NI_OK && nl.ni_namelist_len > 0) {
- res_setoptions(nl.ni_namelist_val[0], "conf");
- ni_namelist_free(&nl);
- }
-
- ni_free(domain);
- return(1); /* using DNS configuration from NetInfo */
- }
-
- status = ni_open(domain, "..", &parent);
- ni_free(domain);
- if (status == NI_OK)
- domain = parent;
- }
- }
- return(0); /* if not using DNS configuration from NetInfo */
-}
-#endif /* NeXT */
-
-u_int
-res_randomid()
-{
- struct timeval now;
-
- gettimeofday(&now, NULL);
- return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid()));
-}
+++ /dev/null
-/*
- * ++Copyright++ 1985, 1993
- * -
- * Copyright (c) 1985, 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--
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <netdb.h>
-#include <resolv.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <string.h>
-#else
-# include "conf/portability.h"
-#endif
-
-#if defined(USE_OPTIONS_H)
-# include <conf/options.h>
-#endif
-
-/*
- * Form all types of queries.
- * Returns the size of the result or -1.
- */
-int
-res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
- int op; /* opcode of query */
- const char *dname; /* domain name */
- int class, type; /* class and type of query */
- const u_char *data; /* resource record data */
- int datalen; /* length of data */
- const u_char *newrr_in; /* new rr for modify or append */
- u_char *buf; /* buffer to put query */
- int buflen; /* size of buffer */
-{
- register HEADER *hp;
- register u_char *cp;
- register int n;
- u_char *dnptrs[20], **dpp, **lastdnptr;
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-#ifndef WINNT
- h_errno = NETDB_INTERNAL;
-#else
- WSASetLastError(NETDB_INTERNAL);
-#endif
- return (-1);
- }
-#ifdef DEBUG
- if (_res.options & RES_DEBUG)
- printf(";; res_mkquery(%d, %s, %d, %d)\n",
- op, dname, class, type);
-#endif
- /*
- * Initialize header fields.
- */
- if ((buf == NULL) || (buflen < HFIXEDSZ))
- return (-1);
- bzero(buf, HFIXEDSZ);
- hp = (HEADER *) buf;
- hp->id = htons(++_res.id);
- hp->opcode = op;
- hp->rd = (_res.options & RES_RECURSE) != 0;
- hp->rcode = NOERROR;
- cp = buf + HFIXEDSZ;
- buflen -= HFIXEDSZ;
- dpp = dnptrs;
- *dpp++ = buf;
- *dpp++ = NULL;
- lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
- /*
- * perform opcode specific processing
- */
- switch (op) {
- case QUERY: /*FALLTHROUGH*/
- case NS_NOTIFY_OP:
- if ((buflen -= QFIXEDSZ) < 0)
- return (-1);
- if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
- return (-1);
- cp += n;
- buflen -= n;
- __putshort(type, cp);
- cp += INT16SZ;
- __putshort(class, cp);
- cp += INT16SZ;
- hp->qdcount = htons(1);
- if (op == QUERY || data == NULL)
- break;
- /*
- * Make an additional record for completion domain.
- */
- buflen -= RRFIXEDSZ;
- n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr);
- if (n < 0)
- return (-1);
- cp += n;
- buflen -= n;
- __putshort(T_NULL, cp);
- cp += INT16SZ;
- __putshort(class, cp);
- cp += INT16SZ;
- __putlong(0, cp);
- cp += INT32SZ;
- __putshort(0, cp);
- cp += INT16SZ;
- hp->arcount = htons(1);
- break;
-
- case IQUERY:
- /*
- * Initialize answer section
- */
- if (buflen < 1 + RRFIXEDSZ + datalen)
- return (-1);
- *cp++ = '\0'; /* no domain name */
- __putshort(type, cp);
- cp += INT16SZ;
- __putshort(class, cp);
- cp += INT16SZ;
- __putlong(0, cp);
- cp += INT32SZ;
- __putshort(datalen, cp);
- cp += INT16SZ;
- if (datalen) {
- bcopy(data, cp, datalen);
- cp += datalen;
- }
- hp->ancount = htons(1);
- break;
-
- default:
- return (-1);
- }
- return (cp - buf);
-}
+++ /dev/null
-/*
- * ++Copyright++ 1985, 1989, 1993
- * -
- * Copyright (c) 1985, 1989, 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--
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)res_send.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
- /* change this to "0"
- * if you talk to a lot
- * of multi-homed SunOS
- * ("broken") name servers.
- */
-#define CHECK_SRVR_ADDR 1 /* XXX - should be in options.h */
-
-/*
- * Send query to name server and wait for reply.
- */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <sys/uio.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/nameser.h>
-#include <arpa/inet.h>
-
-#include <stdio.h>
-#include <netdb.h>
-#include <errno.h>
-#include <resolv.h>
-#if defined(BSD) && (BSD >= 199306)
-# include <stdlib.h>
-# include <string.h>
-# include <unistd.h>
-#else
-# include "conf/portability.h"
-#endif
-
-#if defined(USE_OPTIONS_H)
-# include <conf/options.h>
-#endif
-
-#ifndef WINNT
-static int s = -1; /* socket used for communications */
-#else
-static SOCKET s = INVALID_SOCKET;
-typedef char * caddr_t;
-#endif
-static int connected = 0; /* is the socket connected */
-static int vc = 0; /* is the socket a virtual ciruit? */
-
-#ifndef FD_SET
-/* XXX - should be in portability.h */
-#define NFDBITS 32
-#define FD_SETSIZE 32
-#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
-#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
-#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
-#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
-#endif
-
-/* XXX - this should be done in portability.h */
-#if (defined(BSD) && (BSD >= 199103)) || defined(linux)
-# define CAN_RECONNECT 1
-#else
-# define CAN_RECONNECT 0
-#endif
-
-#ifndef DEBUG
-# define Dprint(cond, args) /*empty*/
-# define DprintQ(cond, args, query, size) /*empty*/
-# define Aerror(file, string, error, address) /*empty*/
-# define Perror(file, string, error) /*empty*/
-#else
-# define Dprint(cond, args) if (cond) {fprintf args;} else {}
-# define DprintQ(cond, args, query, size) if (cond) {\
- fprintf args;\
- __fp_nquery(query, size, stdout);\
- } else {}
- static void
- Aerror(file, string, error, address)
- FILE *file;
- char *string;
- int error;
- struct sockaddr_in address;
- {
- int save = errno;
-
- if (_res.options & RES_DEBUG) {
- fprintf(file, "res_send: %s ([%s].%u): %s\n",
- string,
- inet_ntoa(address.sin_addr),
- ntohs(address.sin_port),
- strerror(error));
- }
-#ifndef WINNT
- errno = save;
-#else
- WSASetLastError(save);
- SetLastError(save);
-#endif
- }
- static void
- Perror(file, string, error)
- FILE *file;
- char *string;
- int error;
- {
- int save = errno;
-
- if (_res.options & RES_DEBUG) {
- fprintf(file, "res_send: %s: %s\n",
- string, strerror(error));
- }
-#ifndef WINNT
- errno = save;
-#else
- SetLastError(save);
-#endif
- }
-#endif
-
-static res_send_qhook Qhook = NULL;
-static res_send_rhook Rhook = NULL;
-
-void
-res_send_setqhook(hook)
- res_send_qhook hook;
-{
-
- Qhook = hook;
-}
-
-void
-res_send_setrhook(hook)
- res_send_rhook hook;
-{
-
- Rhook = hook;
-}
-
-/* int
- * res_isourserver(ina)
- * looks up "ina" in _res.ns_addr_list[]
- * returns:
- * 0 : not found
- * >0 : found
- * author:
- * paul vixie, 29may94
- */
-int
-res_isourserver(inp)
- const struct sockaddr_in *inp;
-{
- struct sockaddr_in ina;
- register int ns, ret;
-
- ina = *inp;
- ret = 0;
- for (ns = 0; ns < _res.nscount; ns++) {
- register const struct sockaddr_in *srv = &_res.nsaddr_list[ns];
-
- if (srv->sin_family == ina.sin_family &&
- srv->sin_port == ina.sin_port &&
- (srv->sin_addr.s_addr == INADDR_ANY ||
- srv->sin_addr.s_addr == ina.sin_addr.s_addr)) {
- ret++;
- break;
- }
- }
- return (ret);
-}
-
-/* int
- * res_nameinquery(name, type, class, buf, eom)
- * look for (name,type,class) in the query section of packet (buf,eom)
- * requires:
- * buf + HFIXESDZ <= eom
- * returns:
- * -1 : format error
- * 0 : not found
- * >0 : found
- * author:
- * paul vixie, 29may94
- */
-int
-res_nameinquery(name, type, class, buf, eom)
- const char *name;
- register int type, class;
- const u_char *buf, *eom;
-{
- register const u_char *cp = buf + HFIXEDSZ;
- int qdcount = ntohs( (u_short) ((HEADER*)buf)->qdcount);
-
- while (qdcount-- > 0) {
- char tname[MAXDNAME+1];
- register int n, ttype, tclass;
-
- n = dn_expand(buf, eom, cp, tname, sizeof tname);
- if (n < 0)
- return (-1);
- cp += n;
- if (cp + 2 * INT16SZ > eom)
- return (-1);
- ttype = _getshort(cp); cp += INT16SZ;
- tclass = _getshort(cp); cp += INT16SZ;
- if (ttype == type &&
- tclass == class &&
- strcasecmp(tname, name) == 0)
- return (1);
- }
- return (0);
-}
-
-/* int
- * res_queriesmatch(buf1, eom1, buf2, eom2)
- * is there a 1:1 mapping of (name,type,class)
- * in (buf1,eom1) and (buf2,eom2)?
- * returns:
- * -1 : format error
- * 0 : not a 1:1 mapping
- * >0 : is a 1:1 mapping
- * author:
- * paul vixie, 29may94
- */
-int
-res_queriesmatch(buf1, eom1, buf2, eom2)
- const u_char *buf1, *eom1;
- const u_char *buf2, *eom2;
-{
- register const u_char *cp = buf1 + HFIXEDSZ;
- int qdcount = ntohs( (u_short) ((HEADER*)buf1)->qdcount);
-
- if (buf1 + HFIXEDSZ > eom1 || buf2 + HFIXEDSZ > eom2)
- return (-1);
-
- if (qdcount != ntohs( (u_short) ((HEADER*)buf2)->qdcount))
- return (0);
- while (qdcount-- > 0) {
- char tname[MAXDNAME+1];
- register int n, ttype, tclass;
-
- n = dn_expand(buf1, eom1, cp, tname, sizeof tname);
- if (n < 0)
- return (-1);
- cp += n;
- if (cp + 2 * INT16SZ > eom1)
- return (-1);
- ttype = _getshort(cp); cp += INT16SZ;
- tclass = _getshort(cp); cp += INT16SZ;
- if (!res_nameinquery(tname, ttype, tclass, buf2, eom2))
- return (0);
- }
- return (1);
-}
-
-int
-res_send(buf, buflen, ans, anssiz)
- const u_char *buf;
- int buflen;
- u_char *ans;
- int anssiz;
-{
- HEADER *hp = (HEADER *) buf;
- HEADER *anhp = (HEADER *) ans;
- int gotsomewhere, connreset, terrno, try, v_circuit, resplen, ns;
- register int n;
- u_int badns; /* XXX NSMAX can't exceed #/bits in this var */
-#ifdef WINNT
- int optionValue = SO_SYNCHRONOUS_NONALERT;
- DWORD BytesRead;
-#endif
-
- if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
- /* errno should have been set by res_init() in this case. */
- return (-1);
- }
- if (anssiz < HFIXEDSZ) {
-#ifndef WINNT
- errno = EINVAL;
-#else
- SetLastError(EINVAL);
-#endif
- return (-1);
- }
- DprintQ((_res.options & RES_DEBUG) || (_res.pfcode & RES_PRF_QUERY),
- (stdout, ";; res_send()\n"), buf, buflen);
- v_circuit = (_res.options & RES_USEVC) || buflen > PACKETSZ;
- gotsomewhere = 0;
- connreset = 0;
- terrno = ETIMEDOUT;
- badns = 0;
-
- /*
- * Send request, RETRY times, or until successful
- */
- for (try = 0; try < _res.retry; try++) {
- for (ns = 0; ns < _res.nscount; ns++) {
- struct sockaddr_in *nsap = &_res.nsaddr_list[ns];
- same_ns:
- if (badns & (1 << ns)) {
- res_close();
- goto next_ns;
- }
-
- if (Qhook) {
- int done = 0, loops = 0;
-
- do {
- res_sendhookact act;
-
- act = (*Qhook)(&nsap, &buf, &buflen,
- ans, anssiz, &resplen);
- switch (act) {
- case res_goahead:
- done = 1;
- break;
- case res_nextns:
- res_close();
- goto next_ns;
- case res_done:
- return (resplen);
- case res_modified:
- /* give the hook another try */
- if (++loops < 42) /*doug adams*/
- break;
- /*FALLTHROUGH*/
- case res_error:
- /*FALLTHROUGH*/
- default:
- return (-1);
- }
- } while (!done);
- }
-
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; Querying server (# %d) address = %s\n",
- ns + 1, inet_ntoa(nsap->sin_addr)));
-
- if (v_circuit) {
- int truncated;
- struct iovec iov[2];
- u_short len;
- u_char *cp;
-#ifdef WINNT
- /* set up things so that subsequent socket()
- calls will open blocking sockets */
- if (setsockopt(INVALID_SOCKET, SOL_SOCKET,
- SO_OPENTYPE, (char *)&optionValue,
- sizeof(optionValue)) != NO_ERROR) {
- Perror(stderr, "cannot open nonoverlapped socket", errno);
- return (-1);
- }
-#endif
- /*
- * Use virtual circuit;
- * at most one attempt per server.
- */
- try = _res.retry;
- truncated = 0;
- if ((s < 0) || (!vc)) {
- if (s >= 0)
- res_close();
-
- s = socket(PF_INET, SOCK_STREAM, 0);
-#ifndef WINNT
- if (s < 0) {
-#else
- if (s == INVALID_SOCKET) {
-#endif
- terrno = errno;
- Perror(stderr, "socket(vc)", errno);
- return (-1);
- }
-#ifndef WINNT
- errno = 0;
-#else
- SetLastError(0);
-#endif
- if (connect(s, (struct sockaddr *)nsap,
- sizeof(struct sockaddr)) < 0) {
- terrno = errno;
- Aerror(stderr, "connect/vc",
- errno, *nsap);
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- vc = 1;
- }
- /*
- * Send length & message
- */
- putshort((u_short)buflen, (u_char*)&len);
- iov[0].iov_base = (caddr_t)&len;
- iov[0].iov_len = INT16SZ;
- iov[1].iov_base = (caddr_t)buf;
- iov[1].iov_len = buflen;
- if (writev(s, iov, 2) != (INT16SZ + buflen)) {
- terrno = errno;
- Perror(stderr, "write failed", errno);
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- /*
- * Receive length & response
- */
-read_len:
- cp = ans;
- len = INT16SZ;
-#ifndef WINNT
- while ((n = read(s, (char *)cp, (int)len)) > 0) {
-#else
- while (ReadFile((HANDLE)s, (char *)cp, (DWORD)len,
- &BytesRead, NULL) &&
- (n = (int)BytesRead) > 0) {
-#endif
- cp += n;
- if ((len -= n) <= 0)
- break;
- }
- if (n <= 0) {
- terrno = errno;
- Perror(stderr, "read failed", errno);
- res_close();
- /*
- * A long running process might get its TCP
- * connection reset if the remote server was
- * restarted. Requery the server instead of
- * trying a new one. When there is only one
- * server, this means that a query might work
- * instead of failing. We only allow one reset
- * per query to prevent looping.
- */
- if (terrno == ECONNRESET && !connreset) {
- connreset = 1;
- res_close();
- goto same_ns;
- }
- res_close();
- goto next_ns;
- }
- resplen = _getshort(ans);
- if (resplen > anssiz) {
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; response truncated\n")
- );
- truncated = 1;
- len = anssiz;
- } else
- len = resplen;
- if (len < HFIXEDSZ) {
- /*
- * Undersized message.
- */
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; undersized: %d\n", len));
-#ifndef WINNT
- terrno = EMSGSIZE;
-#else
- terrno = WSAEMSGSIZE;
-#endif
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- cp = ans;
- while (len != 0 &&
-#ifndef WINNT
- (n = read(s, (char *)cp, (int)len)) > 0) {
-#else
- ReadFile((HANDLE)s, (char *)cp, (DWORD)len,
- &BytesRead, NULL) &&
- (n = (int)BytesRead) > 0) {
-#endif
- cp += n;
- len -= n;
- }
- if (n <= 0) {
- terrno = errno;
- Perror(stderr, "read(vc)", errno);
- res_close();
- goto next_ns;
- }
- if (truncated) {
- /*
- * Flush rest of answer
- * so connection stays in synch.
- */
- anhp->tc = 1;
- len = resplen - anssiz;
- while (len != 0) {
- char junk[PACKETSZ];
-
- n = (len > sizeof(junk)
- ? sizeof(junk)
- : len);
-#ifndef WINNT
- if ((n = read(s, junk, n)) > 0)
-#else
- if (ReadFile((HANDLE)s, (char *)junk, (DWORD)n,
- &BytesRead, NULL) &&
- (n = (int)BytesRead) > 0)
-#endif
- len -= n;
- else
- break;
- }
- }
- /*
- * The calling applicating has bailed out of
- * a previous call and failed to arrange to have
- * the circuit closed or the server has got
- * itself confused. Anyway drop the packet and
- * wait for the correct one.
- */
- if (hp->id != anhp->id) {
- DprintQ((_res.options & RES_DEBUG) ||
- (_res.pfcode & RES_PRF_REPLY),
- (stdout, ";; old answer (unexpected):\n"),
- ans, (resplen>anssiz)?anssiz:resplen);
- goto read_len;
- }
- } else {
- /*
- * Use datagrams.
- */
- struct timeval timeout;
- fd_set dsmask;
- struct sockaddr_in from;
- int fromlen;
-
-#ifndef WINNT
- if ((s < 0) || vc) {
-#else
- if ((s == INVALID_SOCKET) || vc) {
-#endif
- if (vc)
- res_close();
- s = socket(PF_INET, SOCK_DGRAM, 0);
-#ifndef WINNT
- if (s < 0) {
-#else
- if (s == INVALID_SOCKET) {
-#endif
-#if !CAN_RECONNECT
- bad_dg_sock:
-#endif
- terrno = errno;
- Perror(stderr, "socket(dg)", errno);
- return (-1);
- }
- connected = 0;
- }
- /*
- * On a 4.3BSD+ machine (client and server,
- * actually), sending to a nameserver datagram
- * port with no nameserver will cause an
- * ICMP port unreachable message to be returned.
- * If our datagram socket is "connected" to the
- * server, we get an ECONNREFUSED error on the next
- * socket operation, and select returns if the
- * error message is received. We can thus detect
- * the absence of a nameserver without timing out.
- * If we have sent queries to at least two servers,
- * however, we don't want to remain connected,
- * as we wish to receive answers from the first
- * server to respond.
- */
-#ifndef WINNT
- if (_res.nscount == 1 || (try == 0 && ns == 0)) {
- /*
- * Connect only if we are sure we won't
- * receive a response from another server.
- */
- if (!connected) {
- if (connect(s, (struct sockaddr *)nsap,
- sizeof(struct sockaddr)
- ) < 0) {
- Aerror(stderr,
- "connect(dg)",
- errno, *nsap);
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- connected = 1;
- }
- if (send(s, (char*)buf, buflen, 0) != buflen) {
- Perror(stderr, "send", errno);
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- } else {
-#endif /* WINNT */
- /*
- * Disconnect if we want to listen
- * for responses from more than one server.
- */
- if (connected) {
-#if CAN_RECONNECT
- struct sockaddr_in no_addr;
-
- no_addr.sin_family = AF_INET;
- no_addr.sin_addr.s_addr = INADDR_ANY;
- no_addr.sin_port = 0;
- (void) connect(s,
- (struct sockaddr *)
- &no_addr,
- sizeof(no_addr));
-#else
- int s1 = socket(PF_INET, SOCK_DGRAM,0);
-#ifndef WINNT
- if (s1 < 0)
-#else
- if (s1 == INVALID_SOCKET)
-#endif
- goto bad_dg_sock;
- (void) dup2(s1, s);
- (void) close(s1);
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; new DG socket\n"))
-#endif
- connected = 0;
-#ifndef WINNT
- errno = 0;
-#else
- SetLastError(0);
-#endif
- }
- if (sendto(s, (char*)buf, buflen, 0,
- (struct sockaddr *)nsap,
- sizeof(struct sockaddr))
- != buflen) {
- Aerror(stderr, "sendto", errno, *nsap);
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
-#ifndef WINNT
- }
-#endif
-
- /*
- * Wait for reply
- */
- timeout.tv_sec = (_res.retrans << try);
- if (try > 0)
- timeout.tv_sec /= _res.nscount;
- if ((long) timeout.tv_sec <= 0)
- timeout.tv_sec = 1;
- timeout.tv_usec = 0;
- wait:
- if (s < 0 || s >= FD_SETSIZE) {
- Perror(stderr, "s out-of-bounds", EMFILE);
- res_close();
- goto next_ns;
- }
- FD_ZERO(&dsmask);
- FD_SET(s, &dsmask);
- n = select(s+1, &dsmask, (fd_set *)NULL,
- (fd_set *)NULL, &timeout);
- if (n < 0) {
-#ifndef WINNT
- if (errno == EINTR)
-#else
- if (errno == WSAEINTR)
-#endif
- goto wait;
- Perror(stderr, "select", errno);
- res_close();
- goto next_ns;
- }
- if (n == 0) {
- /*
- * timeout
- */
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; timeout\n"));
- gotsomewhere = 1;
- res_close();
- goto next_ns;
- }
-#ifndef WINNT
- errno = 0;
-#else
- WSASetLastError(0);
- SetLastError(0);
-#endif
- fromlen = sizeof(struct sockaddr_in);
- resplen = recvfrom(s, (char*)ans, anssiz, 0,
- (struct sockaddr *)&from, &fromlen);
- if (resplen <= 0) {
-#ifndef WINNT
- Perror(stderr, "recvfrom", errno);
-#else
- Perror(stderr, "recvfrom", WSAGetLastError());
-#endif
- res_close();
- goto next_ns;
- }
- gotsomewhere = 1;
- if (resplen < HFIXEDSZ) {
- /*
- * Undersized message.
- */
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; undersized: %d\n",
- resplen));
-#ifndef WINNT
- terrno = EMSGSIZE;
-#else
- terrno = WSAEMSGSIZE;
-#endif
- badns |= (1 << ns);
- res_close();
- goto next_ns;
- }
- if (hp->id != anhp->id) {
- /*
- * response from old query, ignore it.
- * XXX - potential security hazard could
- * be detected here.
- */
- DprintQ((_res.options & RES_DEBUG) ||
- (_res.pfcode & RES_PRF_REPLY),
- (stdout, ";; old answer:\n"),
- ans, (resplen>anssiz)?anssiz:resplen);
- goto wait;
- }
-#if CHECK_SRVR_ADDR
- if (!(_res.options & RES_INSECURE1) &&
- !res_isourserver(&from)) {
- /*
- * response from wrong server? ignore it.
- * XXX - potential security hazard could
- * be detected here.
- */
- DprintQ((_res.options & RES_DEBUG) ||
- (_res.pfcode & RES_PRF_REPLY),
- (stdout, ";; not our server:\n"),
- ans, (resplen>anssiz)?anssiz:resplen);
- goto wait;
- }
-#endif
- if (!(_res.options & RES_INSECURE2) &&
- !res_queriesmatch(buf, buf + buflen,
- ans, ans + anssiz)) {
- /*
- * response contains wrong query? ignore it.
- * XXX - potential security hazard could
- * be detected here.
- */
- DprintQ((_res.options & RES_DEBUG) ||
- (_res.pfcode & RES_PRF_REPLY),
- (stdout, ";; wrong query name:\n"),
- ans, (resplen>anssiz)?anssiz:resplen);
- goto wait;
- }
- if (anhp->rcode == SERVFAIL ||
- anhp->rcode == NOTIMP ||
- anhp->rcode == REFUSED) {
- DprintQ(_res.options & RES_DEBUG,
- (stdout, "server rejected query:\n"),
- ans, (resplen>anssiz)?anssiz:resplen);
- badns |= (1 << ns);
- res_close();
- /* don't retry if called from dig */
- if (!_res.pfcode)
- goto next_ns;
- }
- if (!(_res.options & RES_IGNTC) && anhp->tc) {
- /*
- * get rest of answer;
- * use TCP with same server.
- */
- Dprint(_res.options & RES_DEBUG,
- (stdout, ";; truncated answer\n"));
- v_circuit = 1;
- res_close();
- goto same_ns;
- }
- } /*if vc/dg*/
- Dprint((_res.options & RES_DEBUG) ||
- ((_res.pfcode & RES_PRF_REPLY) &&
- (_res.pfcode & RES_PRF_HEAD1)),
- (stdout, ";; got answer:\n"));
- DprintQ((_res.options & RES_DEBUG) ||
- (_res.pfcode & RES_PRF_REPLY),
- (stdout, ""),
- ans, (resplen>anssiz)?anssiz:resplen);
- /*
- * If using virtual circuits, we assume that the first server
- * is preferred over the rest (i.e. it is on the local
- * machine) and only keep that one open.
- * If we have temporarily opened a virtual circuit,
- * or if we haven't been asked to keep a socket open,
- * close the socket.
- */
- if ((v_circuit && (!(_res.options & RES_USEVC) || ns != 0)) ||
- !(_res.options & RES_STAYOPEN)) {
- res_close();
- }
- if (Rhook) {
- int done = 0, loops = 0;
-
- do {
- res_sendhookact act;
-
- act = (*Rhook)(nsap, buf, buflen,
- ans, anssiz, &resplen);
- switch (act) {
- case res_goahead:
- case res_done:
- done = 1;
- break;
- case res_nextns:
- res_close();
- goto next_ns;
- case res_modified:
- /* give the hook another try */
- if (++loops < 42) /*doug adams*/
- break;
- /*FALLTHROUGH*/
- case res_error:
- /*FALLTHROUGH*/
- default:
- return (-1);
- }
- } while (!done);
-
- }
- return (resplen);
- next_ns: ;
- } /*foreach ns*/
- } /*foreach retry*/
- res_close();
- if (!v_circuit)
- if (!gotsomewhere) {
-#ifndef WINNT
- errno = ECONNREFUSED; /* no nameservers found */
-#else
- WSASetLastError(ECONNREFUSED);
- SetLastError(ECONNREFUSED);
-#endif
- } else {
-#ifndef WINNT
- errno = ETIMEDOUT; /* no answer obtained */
-#else
- WSASetLastError(ETIMEDOUT);
- SetLastError(ETIMEDOUT);
-#endif
- } else {
-#ifndef WINNT
- errno = terrno;
-#else
- WSASetLastError(terrno);
- SetLastError(terrno);
-#endif
- return (-1);
- }
-}
-
-/*
- * This routine is for closing the socket if a virtual circuit is used and
- * the program wants to close it. This provides support for endhostent()
- * which expects to close the socket.
- *
- * This routine is not expected to be user visible.
- */
-void
-res_close()
-{
- if (s >= 0) {
-#ifndef WINNT
- (void) close(s);
-#else
- (void) closesocket(s);
-#endif
-
-#ifndef WINNT
- s = -1;
-#else
- s = INVALID_SOCKET;
-#endif
- connected = 0;
- vc = 0;
- }
-}
-
-#ifdef ultrix
-/* ultrix 4.0 had some icky packaging in its libc.a. alias for it here.
- * there is more gunk of this kind over in res_debug.c.
- */
-
-void
-_res_close()
-{
- res_close();
-}
-
-#undef res_send
-int
-res_send(buf, buflen, ans, anssiz)
- const u_char *buf;
- int buflen;
- u_char *ans;
- int anssiz;
-{
- return (__res_send(buf, buflen, ans, anssiz));
-}
-#endif /* Ultrix 4.0 hackery */
+++ /dev/null
-/*
- * ++Copyright++ 1983, 1987, 1989, 1993
- * -
- * Copyright (c) 1983, 1987, 1989, 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--
- */
-
-/*
- * @(#)resolv.h 8.1 (Berkeley) 6/2/93
- * $Id$
- */
-
-#ifndef _RESOLV_H_
-#define _RESOLV_H_
-
-#ifndef WINNT
-#include <sys/param.h>
-#endif
-#if (!defined(BSD)) || (BSD < 199306)
-#include <sys/bitypes.h>
-#else
-#include <sys/types.h>
-#endif
-#include <sys/cdefs.h>
-#include <stdio.h>
-#ifdef WINNT
-#define FD_SETSIZE 512
-#include <winsock.h>
-#include "conf\portability.h"
-#endif
-
-/*
- * Revision information. This is the release date in YYYYMMDD format.
- * It can change every day so the right thing to do with it is use it
- * in preprocessor commands such as "#if (__RES > 19931104)". Do not
- * compare for equality; rather, use it to determine whether your resolver
- * is new enough to contain a certain feature.
- */
-
-#define __RES 19960801
-
-/*
- * Resolver configuration file.
- * Normally not present, but may contain the address of the
- * inital name server(s) to query and the domain search list.
- */
-
-#ifndef _PATH_RESCONF
-#ifndef WINNT
-#define _PATH_RESCONF "/etc/resolv.conf"
-#else
-#define _PATH_RESCONF "%windir%\\RESOLV.CONF"
-#define _ALT_PATH_RESCONF "%windir%\\RESOLV.INI"
-#endif /* WINNT */
-#endif
-
-/*
- * Global defines and variables for resolver stub.
- */
-#define MAXNS 3 /* max # name servers we'll track */
-#define MAXDFLSRCH 3 /* # default domain levels to try */
-#define MAXDNSRCH 6 /* max # domains in search path */
-#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
-
-#define RES_TIMEOUT 5 /* min. seconds between retries */
-#define MAXRESOLVSORT 10 /* number of net to sort on */
-#define RES_MAXNDOTS 15 /* should reflect bit field size */
-
-struct __res_state {
- int retrans; /* retransmition time interval */
- int retry; /* number of times to retransmit */
- u_long options; /* option flags - see below. */
- int nscount; /* number of name servers */
- struct sockaddr_in
- nsaddr_list[MAXNS]; /* address of name server */
-#define nsaddr nsaddr_list[0] /* for backward compatibility */
- u_short id; /* current message id */
- char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
- char defdname[256]; /* default domain (deprecated) */
- u_long pfcode; /* RES_PRF_ flags - see below. */
- unsigned ndots:4; /* threshold for initial abs. query */
- unsigned nsort:4; /* number of elements in sort_list[] */
- char unused[3];
- struct {
- struct in_addr addr;
- u_int32_t mask;
- } sort_list[MAXRESOLVSORT];
- char pad[72]; /* on an i386 this means 512b total */
-};
-
-/*
- * Resolver options (keep these in synch with res_debug.c, please)
- */
-#define RES_INIT 0x00000001 /* address initialized */
-#define RES_DEBUG 0x00000002 /* print debug messages */
-#define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/
-#define RES_USEVC 0x00000008 /* use virtual circuit */
-#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
-#define RES_IGNTC 0x00000020 /* ignore trucation errors */
-#define RES_RECURSE 0x00000040 /* recursion desired */
-#define RES_DEFNAMES 0x00000080 /* use default domain name */
-#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
-#define RES_DNSRCH 0x00000200 /* search up local domain tree */
-#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
-#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
-#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
-#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
-
-#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
-
-/*
- * Resolver "pfcode" values. Used by dig.
- */
-#define RES_PRF_STATS 0x00000001
-/* 0x00000002 */
-#define RES_PRF_CLASS 0x00000004
-#define RES_PRF_CMD 0x00000008
-#define RES_PRF_QUES 0x00000010
-#define RES_PRF_ANS 0x00000020
-#define RES_PRF_AUTH 0x00000040
-#define RES_PRF_ADD 0x00000080
-#define RES_PRF_HEAD1 0x00000100
-#define RES_PRF_HEAD2 0x00000200
-#define RES_PRF_TTLID 0x00000400
-#define RES_PRF_HEADX 0x00000800
-#define RES_PRF_QUERY 0x00001000
-#define RES_PRF_REPLY 0x00002000
-#define RES_PRF_INIT 0x00004000
-/* 0x00008000 */
-
-/* hooks are still experimental as of 4.9.2 */
-typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
- res_sendhookact;
-
-typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr_in * const *ns,
- const u_char **query,
- int *querylen,
- u_char *ans,
- int anssiz,
- int *resplen));
-
-typedef res_sendhookact (*res_send_rhook)__P((const struct sockaddr_in *ns,
- const u_char *query,
- int querylen,
- u_char *ans,
- int anssiz,
- int *resplen));
-
-struct res_sym {
- int number; /* Identifying number, like T_MX */
- char * name; /* Its symbolic name, like "MX" */
- char * humanname; /* Its fun name, like "mail exchanger" */
-};
-
-extern struct __res_state _res;
-extern const struct res_sym __p_class_syms[];
-extern const struct res_sym __p_type_syms[];
-
-/* Private routines shared between libc/net, named, nslookup and others. */
-#define res_hnok __res_hnok
-#define res_ownok __res_ownok
-#define res_mailok __res_mailok
-#define res_dnok __res_dnok
-#define sym_ston __sym_ston
-#define sym_ntos __sym_ntos
-#define sym_ntop __sym_ntop
-#define b64_ntop __b64_ntop
-#define b64_pton __b64_pton
-#define loc_ntoa __loc_ntoa
-#define loc_aton __loc_aton
-#define dn_skipname __dn_skipname
-#define fp_resstat __fp_resstat
-#define fp_query __fp_query
-#define fp_nquery __fp_nquery
-#define hostalias __hostalias
-#define putlong __putlong
-#define putshort __putshort
-#define p_class __p_class
-#define p_time __p_time
-#define p_type __p_type
-#define p_query __p_query
-#define p_cdnname __p_cdnname
-#define p_cdname __p_cdname
-#define p_fqnname __p_fqnname
-#define p_fqname __p_fqname
-#define p_rr __p_rr
-#define p_option __p_option
-#define p_secstodate __p_secstodate
-#define dn_count_labels __dn_count_labels
-#define dn_comp __dn_comp
-#define res_randomid __res_randomid
-#define res_isourserver __res_isourserver
-#define res_nameinquery __res_nameinquery
-#define res_queriesmatch __res_queriesmatch
-#define res_close __res_close
-
-#ifdef BIND_RES_POSIX3
-#define dn_expand __dn_expand
-#define res_init __res_init
-#define res_query __res_query
-#define res_search __res_search
-#define res_querydomain __res_querydomain
-#define res_mkquery __res_mkquery
-#define res_send __res_send
-#endif
-
-__BEGIN_DECLS
-int res_hnok __P((const char *));
-int res_ownok __P((const char *));
-int res_mailok __P((const char *));
-int res_dnok __P((const char *));
-int sym_ston __P((const struct res_sym *, char *, int *));
-const char * sym_ntos __P((const struct res_sym *, int, int *));
-const char * sym_ntop __P((const struct res_sym *, int, int *));
-int b64_ntop __P((u_char const *, size_t, char *, size_t));
-int b64_pton __P((char const *, u_char *, size_t));
-int loc_aton __P((const char *, u_char *));
-const char * loc_ntoa __P((const u_char *, char *));
-int dn_skipname __P((const u_char *, const u_char *));
-void fp_resstat __P((struct __res_state *, FILE *));
-void fp_query __P((const u_char *, FILE *));
-void fp_nquery __P((const u_char *, int, FILE *));
-const char * hostalias __P((const char *));
-void putlong __P((u_int32_t, u_char *));
-void putshort __P((u_int16_t, u_char *));
-const char * p_class __P((int));
-const char * p_time __P((u_int32_t));
-const char * p_type __P((int));
-void p_query __P((const u_char *));
-const u_char * p_cdnname __P((const u_char *, const u_char *, int, FILE *));
-const u_char * p_cdname __P((const u_char *, const u_char *, FILE *));
-const u_char * p_fqnname __P((const u_char *cp, const u_char *msg,
- int, char *, int));
-const u_char * p_fqname __P((const u_char *, const u_char *, FILE *));
-const u_char * p_rr __P((const u_char *, const u_char *, FILE *));
-const char * p_option __P((u_long option));
-char * p_secstodate __P((u_long));
-int dn_count_labels __P((char *));
-int dn_comp __P((const char *, u_char *, int,
- u_char **, u_char **));
-int dn_expand __P((const u_char *, const u_char *, const u_char *,
- char *, int));
-int res_init __P((void));
-u_int res_randomid __P((void));
-int res_query __P((const char *, int, int, u_char *, int));
-int res_search __P((const char *, int, int, u_char *, int));
-int res_querydomain __P((const char *, const char *, int, int,
- u_char *, int));
-int res_mkquery __P((int, const char *, int, int, const u_char *, int,
- const u_char *, u_char *, int));
-int res_send __P((const u_char *, int, u_char *, int));
-int res_isourserver __P((const struct sockaddr_in *));
-int res_nameinquery __P((const char *, int, int,
- const u_char *, const u_char *));
-int res_queriesmatch __P((const u_char *, const u_char *,
- const u_char *, const u_char *));
-void res_close __P((void));
-__END_DECLS
-
-#endif /* !_RESOLV_H_ */
+++ /dev/null
-/*
- * Copyright (c) 1985, 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)sethostent.c 8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#ifndef WINNT
-#include <sys/param.h>
-#include <netinet/in.h>
-#endif
-#include <arpa/nameser.h>
-#include <netdb.h>
-#include <resolv.h>
-
-void
-sethostent(stayopen)
- int stayopen;
-{
- if ((_res.options & RES_INIT) == 0 && res_init() == -1)
- return;
- if (stayopen)
- _res.options |= RES_STAYOPEN | RES_USEVC;
-}
-
-void
-endhostent()
-{
- _res.options &= ~(RES_STAYOPEN | RES_USEVC);
- res_close();
-}
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