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-rw-r--r--newlib/libc/sys/linux/net/res_init.c608
1 files changed, 0 insertions, 608 deletions
diff --git a/newlib/libc/sys/linux/net/res_init.c b/newlib/libc/sys/linux/net/res_init.c
deleted file mode 100644
index 81b06e710..000000000
--- a/newlib/libc/sys/linux/net/res_init.c
+++ /dev/null
@@ -1,608 +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.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-/*
- * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
-static const char rcsid[] = "$BINDId: res_init.c,v 8.16 2000/05/09 07:10:12 vixie Exp $";
-#endif /* LIBC_SCCS and not lint */
-
-#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 <stdio_ext.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <not-cancel.h>
-#include "local.h"
-#include <resolv.h>
-
-/* Options. Should all be left alone. */
-#define RESOLVSORT
-#define RFC1535
-/* #undef DEBUG */
-
-static void res_setoptions (res_state, const char *, const char *)
- internal_function;
-
-#ifdef RESOLVSORT
-static const char sort_mask_chars[] = "/&";
-#define ISSORTMASK(ch) (strchr(sort_mask_chars, ch) != NULL)
-static u_int32_t net_mask (struct in_addr) __THROW;
-#endif
-
-#if !defined(isascii) /* XXX - could be a function */
-# define isascii(c) (!(c & 0200))
-#endif
-
-#ifdef _LIBC
-unsigned long long int __res_initstamp attribute_hidden;
-#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));
-}
-#ifdef _LIBC
-libc_hidden_def (__res_ninit)
-#endif
-
-/* 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 */
-#ifdef _LIBC
- int nservall = 0; /* number of NS records read, nserv IPv4 only */
-#endif
- int haveenv = 0;
- int havesearch = 0;
-#ifdef RESOLVSORT
- int nsort = 0;
- char *net;
-#endif
-#ifndef RFC1535
- int dots;
-#endif
-#ifdef _LIBC
- statp->_u._ext.initstamp = __res_initstamp;
-#endif
-
- if (!preinit) {
- statp->retrans = RES_TIMEOUT;
- statp->retry = RES_DFLRETRY;
- statp->options = RES_DEFAULT;
- statp->id = res_randomid();
- }
-
-#ifdef USELOOPBACK
- statp->nsaddr.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1);
-#else
- statp->nsaddr.sin_addr.s_addr = INADDR_ANY;
-#endif
- statp->nsaddr.sin_family = AF_INET;
- statp->nsaddr.sin_port = htons(NAMESERVER_PORT);
- statp->nscount = 1;
- statp->ndots = 1;
- statp->pfcode = 0;
- statp->_vcsock = -1;
- statp->_flags = 0;
- statp->qhook = NULL;
- statp->rhook = NULL;
- statp->_u._ext.nsinit = 0;
- statp->_u._ext.nscount = 0;
-#ifdef _LIBC
- statp->_u._ext.nscount6 = 0;
- for (n = 0; n < MAXNS; n++) {
- statp->_u._ext.nsaddrs[n] = NULL;
- statp->_u._ext.nsmap[n] = MAXNS;
- }
-#endif
-
- /* 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'))
-
- if ((fp = fopen(_PATH_RESCONF, "rc")) != NULL) {
- /* No threads use this stream. */
- __fsetlocking (fp, FSETLOCKING_BYCALLER);
- /* 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 */
-#ifdef _LIBC
- if (MATCH(buf, "nameserver") && nservall < MAXNS) {
-#else
- if (MATCH(buf, "nameserver") && nserv < MAXNS) {
-#endif
- struct in_addr a;
-
- cp = buf + sizeof("nameserver") - 1;
- while (*cp == ' ' || *cp == '\t')
- cp++;
- if ((*cp != '\0') && (*cp != '\n')
- && inet_aton(cp, &a)) {
- statp->nsaddr_list[nserv].sin_addr = a;
- statp->nsaddr_list[nserv].sin_family = AF_INET;
- statp->nsaddr_list[nserv].sin_port =
- htons(NAMESERVER_PORT);
- nserv++;
-#ifdef _LIBC
- nservall++;
- } else {
- struct in6_addr a6;
- char *el;
-
- if ((el = strchr(cp, '\n')) != NULL)
- *el = '\0';
- if ((*cp != '\0') &&
- (inet_pton(AF_INET6, cp, &a6) > 0)) {
- struct sockaddr_in6 *sa6;
-
- sa6 = malloc(sizeof(*sa6));
- if (sa6 != NULL) {
- sa6->sin6_addr = a6;
- sa6->sin6_family = AF_INET6;
- sa6->sin6_port = htons(NAMESERVER_PORT);
- statp->_u._ext.nsaddrs[nservall] = sa6;
- statp->_u._ext.nssocks[nservall] = -1;
- statp->_u._ext.nsmap[nservall] = MAXNS + 1;
- nservall++;
- }
- }
-#endif
- }
- 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)) {
- statp->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)) {
- 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 > 1)
- statp->nscount = nserv;
-#ifdef _LIBC
- if (nservall - nserv > 0)
- statp->_u._ext.nscount6 = nservall - nserv;
-#endif
-#ifdef RESOLVSORT
- statp->nsort = nsort;
-#endif
- (void) fclose(fp);
- }
- 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;
-
-#ifndef RFC1535
- dots = 0;
- for (cp = statp->defdname; *cp; cp++)
- dots += (*cp == '.');
-
- cp = statp->defdname;
- while (pp < statp->dnsrch + MAXDFLSRCH) {
- if (dots < LOCALDOMAINPARTS)
- break;
- cp = memchr(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
-#endif /* !RFC1535 */
- }
-
- if ((cp = getenv("RES_OPTIONS")) != NULL)
- res_setoptions(statp, cp, "env");
- statp->options |= RES_INIT;
- return (0);
-}
-
-static void
-internal_function
-res_setoptions(res_state statp, const char *options, const char *source) {
- const char *cp = options;
- int i;
-
-#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;
- } 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;
- } 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, "inet6", sizeof("inet6") - 1)) {
- statp->options |= RES_USE_INET6;
- } else if (!strncmp(cp, "ip6-bytestring",
- sizeof("ip6-bytestring") - 1)) {
- statp->options |= RES_USEBSTRING;
- } else if (!strncmp(cp, "no-ip6-dotint",
- sizeof("no-ip6-dotint") - 1)) {
- statp->options |= RES_NOIP6DOTINT;
- } else if (!strncmp(cp, "ip6-dotint",
- sizeof("ip6-dotint") - 1)) {
- statp->options &= ~RES_NOIP6DOTINT;
- } 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;
- } 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
-
-u_int
-res_randomid(void) {
- struct timeval now;
-
- gettimeofday(&now, NULL);
- return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid()));
-}
-#ifdef _LIBC
-libc_hidden_def (__res_randomid)
-#endif
-
-
-/*
- * 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) {
- close_not_cancel_no_status(statp->_vcsock);
- statp->_vcsock = -1;
- statp->_flags &= ~(RES_F_VC | RES_F_CONN);
- }
-#ifdef _LIBC
- for (ns = 0; ns < MAXNS; ns++)
-#else
- for (ns = 0; ns < statp->_u._ext.nscount; ns++)
-#endif
- if (statp->_u._ext.nsaddrs[ns]
- && statp->_u._ext.nssocks[ns] != -1) {
- close_not_cancel_no_status(statp->_u._ext.nssocks[ns]);
- statp->_u._ext.nssocks[ns] = -1;
- }
- statp->_u._ext.nsinit = 0;
-}
-#ifdef _LIBC
-libc_hidden_def (__res_nclose)
-#endif
-
-#ifdef _LIBC
-# ifdef _LIBC_REENTRANT
-/* This is called when a thread is exiting to free resources held in _res. */
-static void __attribute__ ((section ("__libc_thread_freeres_fn")))
-res_thread_freeres (void)
-{
- if (_res.nscount == 0)
- /* Never called res_ninit. */
- return;
-
- __res_nclose (&_res); /* Close any VC sockets. */
-
- for (int ns = 0; ns < MAXNS; ns++)
- if (_res._u._ext.nsaddrs[ns] != NULL)
- {
- free (_res._u._ext.nsaddrs[ns]);
- _res._u._ext.nsaddrs[ns] = NULL;
- }
-
- /* Make sure we do a full re-initialization the next time. */
- _res.options = 0;
-}
-text_set_element (__libc_thread_subfreeres, res_thread_freeres);
-text_set_element (__libc_subfreeres, res_thread_freeres);
-# endif
-#endif
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