From ba8f85b49c38af7bc2a9acdef5dcde2de008d25e Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Sat, 12 Jul 2008 05:00:28 +0000
Subject: Flatten bind9 vendor work area
---
contrib/bind9/lib/bind/resolv/res_init.c | 801 -------------------------------
1 file changed, 801 deletions(-)
delete mode 100644 contrib/bind9/lib/bind/resolv/res_init.c
(limited to 'contrib/bind9/lib/bind/resolv/res_init.c')
diff --git a/contrib/bind9/lib/bind/resolv/res_init.c b/contrib/bind9/lib/bind/resolv/res_init.c
deleted file mode 100644
index f580b9c..0000000
--- a/contrib/bind9/lib/bind/resolv/res_init.c
+++ /dev/null
@@ -1,801 +0,0 @@
-/*
- * 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 (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
-static const char rcsid[] = "$Id: res_init.c,v 1.16.18.7 2007/07/09 01:52:58 marka Exp $";
-#endif /* LIBC_SCCS and not lint */
-
-#include "port_before.h"
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <netdb.h>
-
-#include "port_after.h"
-
-/* ensure that sockaddr_in6 and IN6ADDR_ANY_INIT are declared / defined */
-#include <resolv.h>
-
-#include "res_private.h"
-
-/*% Options. Should all be left alone. */
-#define RESOLVSORT
-#define DEBUG
-
-#ifdef SOLARIS2
-#include <sys/systeminfo.h>
-#endif
-
-static void res_setoptions __P((res_state, const char *, const 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.
- */
-
-/*%
- * 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_ninit(res_state statp) {
- extern int __res_vinit(res_state, int);
-
- return (__res_vinit(statp, 0));
-}
-
-/*% This function has to be reachable by res_data.c but not publically. */
-int
-__res_vinit(res_state statp, int preinit) {
- register FILE *fp;
- register char *cp, **pp;
- register int n;
- char buf[BUFSIZ];
- int nserv = 0; /*%< number of nameserver records read from file */
- int haveenv = 0;
- int havesearch = 0;
-#ifdef RESOLVSORT
- int nsort = 0;
- char *net;
-#endif
- int dots;
- union res_sockaddr_union u[2];
- int maxns = MAXNS;
-
- RES_SET_H_ERRNO(statp, 0);
- if (statp->_u._ext.ext != NULL)
- res_ndestroy(statp);
-
- if (!preinit) {
- statp->retrans = RES_TIMEOUT;
- statp->retry = RES_DFLRETRY;
- statp->options = RES_DEFAULT;
- statp->id = res_randomid();
- }
-
- memset(u, 0, sizeof(u));
-#ifdef USELOOPBACK
- u[nserv].sin.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1);
-#else
- u[nserv].sin.sin_addr.s_addr = INADDR_ANY;
-#endif
- u[nserv].sin.sin_family = AF_INET;
- u[nserv].sin.sin_port = htons(NAMESERVER_PORT);
-#ifdef HAVE_SA_LEN
- u[nserv].sin.sin_len = sizeof(struct sockaddr_in);
-#endif
- nserv++;
-#ifdef HAS_INET6_STRUCTS
-#ifdef USELOOPBACK
- u[nserv].sin6.sin6_addr = in6addr_loopback;
-#else
- u[nserv].sin6.sin6_addr = in6addr_any;
-#endif
- u[nserv].sin6.sin6_family = AF_INET6;
- u[nserv].sin6.sin6_port = htons(NAMESERVER_PORT);
-#ifdef HAVE_SA_LEN
- u[nserv].sin6.sin6_len = sizeof(struct sockaddr_in6);
-#endif
- nserv++;
-#endif
- statp->nscount = 0;
- statp->ndots = 1;
- statp->pfcode = 0;
- statp->_vcsock = -1;
- statp->_flags = 0;
- statp->qhook = NULL;
- statp->rhook = NULL;
- statp->_u._ext.nscount = 0;
- statp->_u._ext.ext = malloc(sizeof(*statp->_u._ext.ext));
- if (statp->_u._ext.ext != NULL) {
- memset(statp->_u._ext.ext, 0, sizeof(*statp->_u._ext.ext));
- statp->_u._ext.ext->nsaddrs[0].sin = statp->nsaddr;
- strcpy(statp->_u._ext.ext->nsuffix, "ip6.arpa");
- strcpy(statp->_u._ext.ext->nsuffix2, "ip6.int");
- } else {
- /*
- * Historically res_init() rarely, if at all, failed.
- * Examples and applications exist which do not check
- * our return code. Furthermore several applications
- * simply call us to get the systems domainname. So
- * rather then immediately fail here we store the
- * failure, which is returned later, in h_errno. And
- * prevent the collection of 'nameserver' information
- * by setting maxns to 0. Thus applications that fail
- * to check our return code wont be able to make
- * queries anyhow.
- */
- RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
- maxns = 0;
- }
-#ifdef RESOLVSORT
- statp->nsort = 0;
-#endif
- res_setservers(statp, u, nserv);
-
-#ifdef SOLARIS2
- /*
- * The old libresolv derived the defaultdomain from NIS/NIS+.
- * We want to keep this behaviour
- */
- {
- char buf[sizeof(statp->defdname)], *cp;
- int ret;
-
- if ((ret = sysinfo(SI_SRPC_DOMAIN, buf, sizeof(buf))) > 0 &&
- (unsigned int)ret <= sizeof(buf)) {
- if (buf[0] == '+')
- buf[0] = '.';
- cp = strchr(buf, '.');
- cp = (cp == NULL) ? buf : (cp + 1);
- strncpy(statp->defdname, cp,
- sizeof(statp->defdname) - 1);
- statp->defdname[sizeof(statp->defdname) - 1] = '\0';
- }
- }
-#endif /* SOLARIS2 */
-
- /* Allow user to override the local domain definition */
- if ((cp = getenv("LOCALDOMAIN")) != NULL) {
- (void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
- statp->defdname[sizeof(statp->defdname) - 1] = '\0';
- 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 = statp->defdname;
- pp = statp->dnsrch;
- *pp++ = cp;
- for (n = 0; *cp && pp < statp->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'))
-
- nserv = 0;
- if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) {
- /* 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(statp->defdname, cp, sizeof(statp->defdname) - 1);
- statp->defdname[sizeof(statp->defdname) - 1] = '\0';
- if ((cp = strpbrk(statp->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(statp->defdname, cp, sizeof(statp->defdname) - 1);
- statp->defdname[sizeof(statp->defdname) - 1] = '\0';
- if ((cp = strchr(statp->defdname, '\n')) != NULL)
- *cp = '\0';
- /*
- * Set search list to be blank-separated strings
- * on rest of line.
- */
- cp = statp->defdname;
- pp = statp->dnsrch;
- *pp++ = cp;
- for (n = 0; *cp && pp < statp->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 addrinfo hints, *ai;
- char sbuf[NI_MAXSERV];
- const size_t minsiz =
- sizeof(statp->_u._ext.ext->nsaddrs[0]);
-
- cp = buf + sizeof("nameserver") - 1;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- cp[strcspn(cp, ";# \t\n")] = '\0';
- if ((*cp != '\0') && (*cp != '\n')) {
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = PF_UNSPEC;
- hints.ai_socktype = SOCK_DGRAM; /*dummy*/
- hints.ai_flags = AI_NUMERICHOST;
- sprintf(sbuf, "%u", NAMESERVER_PORT);
- if (getaddrinfo(cp, sbuf, &hints, &ai) == 0 &&
- ai->ai_addrlen <= minsiz) {
- if (statp->_u._ext.ext != NULL) {
- memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
- ai->ai_addr, ai->ai_addrlen);
- }
- if (ai->ai_addrlen <=
- sizeof(statp->nsaddr_list[nserv])) {
- memcpy(&statp->nsaddr_list[nserv],
- ai->ai_addr, ai->ai_addrlen);
- } else
- statp->nsaddr_list[nserv].sin_family = 0;
- freeaddrinfo(ai);
- 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((unsigned char)*cp))
- cp++;
- n = *cp;
- *cp = 0;
- if (inet_aton(net, &a)) {
- statp->sort_list[nsort].addr = a;
- if (ISSORTMASK(n)) {
- *cp++ = n;
- net = cp;
- while (*cp && *cp != ';' &&
- isascii(*cp) &&
- !isspace((unsigned char)*cp))
- cp++;
- n = *cp;
- *cp = 0;
- if (inet_aton(net, &a)) {
- statp->sort_list[nsort].mask = a.s_addr;
- } else {
- statp->sort_list[nsort].mask =
- net_mask(statp->sort_list[nsort].addr);
- }
- } else {
- statp->sort_list[nsort].mask =
- net_mask(statp->sort_list[nsort].addr);
- }
- nsort++;
- }
- *cp = n;
- }
- continue;
- }
-#endif
- if (MATCH(buf, "options")) {
- res_setoptions(statp, buf + sizeof("options") - 1, "conf");
- continue;
- }
- }
- if (nserv > 0)
- statp->nscount = nserv;
-#ifdef RESOLVSORT
- statp->nsort = nsort;
-#endif
- (void) fclose(fp);
- }
-/*
- * Last chance to get a nameserver. This should not normally
- * be necessary
- */
-#ifdef NO_RESOLV_CONF
- if(nserv == 0)
- nserv = get_nameservers(statp);
-#endif
-
- if (statp->defdname[0] == 0 &&
- gethostname(buf, sizeof(statp->defdname) - 1) == 0 &&
- (cp = strchr(buf, '.')) != NULL)
- strcpy(statp->defdname, cp + 1);
-
- /* find components of local domain that might be searched */
- if (havesearch == 0) {
- pp = statp->dnsrch;
- *pp++ = statp->defdname;
- *pp = NULL;
-
- dots = 0;
- for (cp = statp->defdname; *cp; cp++)
- dots += (*cp == '.');
-
- cp = statp->defdname;
- while (pp < statp->dnsrch + MAXDFLSRCH) {
- if (dots < LOCALDOMAINPARTS)
- break;
- cp = strchr(cp, '.') + 1; /*%< we know there is one */
- *pp++ = cp;
- dots--;
- }
- *pp = NULL;
-#ifdef DEBUG
- if (statp->options & RES_DEBUG) {
- printf(";; res_init()... default dnsrch list:\n");
- for (pp = statp->dnsrch; *pp; pp++)
- printf(";;\t%s\n", *pp);
- printf(";;\t..END..\n");
- }
-#endif
- }
-
- if ((cp = getenv("RES_OPTIONS")) != NULL)
- res_setoptions(statp, cp, "env");
- statp->options |= RES_INIT;
- return (statp->res_h_errno);
-}
-
-static void
-res_setoptions(res_state statp, const char *options, const char *source)
-{
- const char *cp = options;
- int i;
- struct __res_state_ext *ext = statp->_u._ext.ext;
-
-#ifdef DEBUG
- if (statp->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)
- statp->ndots = i;
- else
- statp->ndots = RES_MAXNDOTS;
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";;\tndots=%d\n", statp->ndots);
-#endif
- } else if (!strncmp(cp, "timeout:", sizeof("timeout:") - 1)) {
- i = atoi(cp + sizeof("timeout:") - 1);
- if (i <= RES_MAXRETRANS)
- statp->retrans = i;
- else
- statp->retrans = RES_MAXRETRANS;
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";;\ttimeout=%d\n", statp->retrans);
-#endif
-#ifdef SOLARIS2
- } else if (!strncmp(cp, "retrans:", sizeof("retrans:") - 1)) {
- /*
- * For backward compatibility, 'retrans' is
- * supported as an alias for 'timeout', though
- * without an imposed maximum.
- */
- statp->retrans = atoi(cp + sizeof("retrans:") - 1);
- } else if (!strncmp(cp, "retry:", sizeof("retry:") - 1)){
- /*
- * For backward compatibility, 'retry' is
- * supported as an alias for 'attempts', though
- * without an imposed maximum.
- */
- statp->retry = atoi(cp + sizeof("retry:") - 1);
-#endif /* SOLARIS2 */
- } else if (!strncmp(cp, "attempts:", sizeof("attempts:") - 1)){
- i = atoi(cp + sizeof("attempts:") - 1);
- if (i <= RES_MAXRETRY)
- statp->retry = i;
- else
- statp->retry = RES_MAXRETRY;
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";;\tattempts=%d\n", statp->retry);
-#endif
- } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
-#ifdef DEBUG
- if (!(statp->options & RES_DEBUG)) {
- printf(";; res_setoptions(\"%s\", \"%s\")..\n",
- options, source);
- statp->options |= RES_DEBUG;
- }
- printf(";;\tdebug\n");
-#endif
- } else if (!strncmp(cp, "no_tld_query",
- sizeof("no_tld_query") - 1) ||
- !strncmp(cp, "no-tld-query",
- sizeof("no-tld-query") - 1)) {
- statp->options |= RES_NOTLDQUERY;
- } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {
- statp->options |= RES_USE_INET6;
- } else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) {
- statp->options |= RES_ROTATE;
- } else if (!strncmp(cp, "no-check-names",
- sizeof("no-check-names") - 1)) {
- statp->options |= RES_NOCHECKNAME;
- }
-#ifdef RES_USE_EDNS0
- else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) {
- statp->options |= RES_USE_EDNS0;
- }
-#endif
- else if (!strncmp(cp, "dname", sizeof("dname") - 1)) {
- statp->options |= RES_USE_DNAME;
- }
- else if (!strncmp(cp, "nibble:", sizeof("nibble:") - 1)) {
- if (ext == NULL)
- goto skip;
- cp += sizeof("nibble:") - 1;
- i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix) - 1);
- strncpy(ext->nsuffix, cp, i);
- ext->nsuffix[i] = '\0';
- }
- else if (!strncmp(cp, "nibble2:", sizeof("nibble2:") - 1)) {
- if (ext == NULL)
- goto skip;
- cp += sizeof("nibble2:") - 1;
- i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix2) - 1);
- strncpy(ext->nsuffix2, cp, i);
- ext->nsuffix2[i] = '\0';
- }
- else if (!strncmp(cp, "v6revmode:", sizeof("v6revmode:") - 1)) {
- cp += sizeof("v6revmode:") - 1;
- /* "nibble" and "bitstring" used to be valid */
- if (!strncmp(cp, "single", sizeof("single") - 1)) {
- statp->options |= RES_NO_NIBBLE2;
- } else if (!strncmp(cp, "both", sizeof("both") - 1)) {
- statp->options &=
- ~RES_NO_NIBBLE2;
- }
- }
- else {
- /* XXX - print a warning here? */
- }
- skip:
- /* 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
-
-u_int
-res_randomid(void) {
- struct timeval now;
-
- gettimeofday(&now, NULL);
- return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid()));
-}
-
-/*%
- * 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_nclose(res_state statp) {
- int ns;
-
- if (statp->_vcsock >= 0) {
- (void) close(statp->_vcsock);
- statp->_vcsock = -1;
- statp->_flags &= ~(RES_F_VC | RES_F_CONN);
- }
- for (ns = 0; ns < statp->_u._ext.nscount; ns++) {
- if (statp->_u._ext.nssocks[ns] != -1) {
- (void) close(statp->_u._ext.nssocks[ns]);
- statp->_u._ext.nssocks[ns] = -1;
- }
- }
-}
-
-void
-res_ndestroy(res_state statp) {
- res_nclose(statp);
- if (statp->_u._ext.ext != NULL)
- free(statp->_u._ext.ext);
- statp->options &= ~RES_INIT;
- statp->_u._ext.ext = NULL;
-}
-
-const char *
-res_get_nibblesuffix(res_state statp) {
- if (statp->_u._ext.ext)
- return (statp->_u._ext.ext->nsuffix);
- return ("ip6.arpa");
-}
-
-const char *
-res_get_nibblesuffix2(res_state statp) {
- if (statp->_u._ext.ext)
- return (statp->_u._ext.ext->nsuffix2);
- return ("ip6.int");
-}
-
-void
-res_setservers(res_state statp, const union res_sockaddr_union *set, int cnt) {
- int i, nserv;
- size_t size;
-
- /* close open servers */
- res_nclose(statp);
-
- /* cause rtt times to be forgotten */
- statp->_u._ext.nscount = 0;
-
- nserv = 0;
- for (i = 0; i < cnt && nserv < MAXNS; i++) {
- switch (set->sin.sin_family) {
- case AF_INET:
- size = sizeof(set->sin);
- if (statp->_u._ext.ext)
- memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
- &set->sin, size);
- if (size <= sizeof(statp->nsaddr_list[nserv]))
- memcpy(&statp->nsaddr_list[nserv],
- &set->sin, size);
- else
- statp->nsaddr_list[nserv].sin_family = 0;
- nserv++;
- break;
-
-#ifdef HAS_INET6_STRUCTS
- case AF_INET6:
- size = sizeof(set->sin6);
- if (statp->_u._ext.ext)
- memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
- &set->sin6, size);
- if (size <= sizeof(statp->nsaddr_list[nserv]))
- memcpy(&statp->nsaddr_list[nserv],
- &set->sin6, size);
- else
- statp->nsaddr_list[nserv].sin_family = 0;
- nserv++;
- break;
-#endif
-
- default:
- break;
- }
- set++;
- }
- statp->nscount = nserv;
-
-}
-
-int
-res_getservers(res_state statp, union res_sockaddr_union *set, int cnt) {
- int i;
- size_t size;
- u_int16_t family;
-
- for (i = 0; i < statp->nscount && i < cnt; i++) {
- if (statp->_u._ext.ext)
- family = statp->_u._ext.ext->nsaddrs[i].sin.sin_family;
- else
- family = statp->nsaddr_list[i].sin_family;
-
- switch (family) {
- case AF_INET:
- size = sizeof(set->sin);
- if (statp->_u._ext.ext)
- memcpy(&set->sin,
- &statp->_u._ext.ext->nsaddrs[i],
- size);
- else
- memcpy(&set->sin, &statp->nsaddr_list[i],
- size);
- break;
-
-#ifdef HAS_INET6_STRUCTS
- case AF_INET6:
- size = sizeof(set->sin6);
- if (statp->_u._ext.ext)
- memcpy(&set->sin6,
- &statp->_u._ext.ext->nsaddrs[i],
- size);
- else
- memcpy(&set->sin6, &statp->nsaddr_list[i],
- size);
- break;
-#endif
-
- default:
- set->sin.sin_family = 0;
- break;
- }
- set++;
- }
- return (statp->nscount);
-}
-
-/*! \file */
--
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