resolv: Reformat res_vinit and related functions to GNU style
Also remove some obsolete comments.
This commit is contained in:
Florian Weimer
parent
94f094f22b
commit
4c4480eecb
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@ -1,3 +1,7 @@
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2017-06-19 Florian Weimer <fweimer@redhat.com>
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* resolv/res_init.c: Reformat to GNU style.
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2017-06-19 Florian Weimer <fweimer@redhat.com>
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* resolv/res_init.c (sort_mask_chars, ISSORTMASK): Remove.
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@ -1,3 +1,21 @@
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/* Resolver state initialization and resolv.conf parsing.
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Copyright (C) 1995-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* Copyright (c) 1985, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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@ -83,26 +101,15 @@
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#include <sys/types.h>
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#include <inet/net-internal.h>
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static void res_setoptions (res_state, const char *, const char *)
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internal_function;
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static u_int32_t net_mask (struct in_addr) __THROW;
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static void res_setoptions (res_state, const char *, const char *);
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static uint32_t net_mask (struct in_addr);
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unsigned long long int __res_initstamp attribute_hidden;
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/*
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* Resolver state default settings.
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*/
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/*
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* Set up default settings. If the configuration file exist, the values
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* there will have precedence. Otherwise, the server address is set to
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* INADDR_LOOPBACK and the default domain name comes from gethostname.
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*
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* Return 0 if completes successfully, -1 on error
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*/
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int
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res_ninit(res_state statp) {
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return (__res_vinit(statp, 0));
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res_ninit (res_state statp)
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{
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return __res_vinit (statp, 0);
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}
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libc_hidden_def (__res_ninit)
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@ -114,349 +121,374 @@ is_sort_mask (char ch)
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return ch == '/' || ch == '&';
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}
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/* This function has to be reachable by res_data.c but not publically. */
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/* Set up default settings. If the /etc/resolv.conf configuration
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file exist, the values there will have precedence. Otherwise, the
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server address is set to INADDR_LOOPBACK and the default domain
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name comes from gethostname. The RES_OPTIONS and LOCALDOMAIN
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environment variables can be used to override some settings.
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Return 0 if completes successfully, -1 on error. */
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int
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__res_vinit(res_state statp, int preinit) {
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FILE *fp;
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char *cp, **pp;
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int n;
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char buf[BUFSIZ];
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int nserv = 0; /* number of nameservers read from file */
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int have_serv6 = 0;
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int haveenv = 0;
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int havesearch = 0;
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int nsort = 0;
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char *net;
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statp->_u._ext.initstamp = __res_initstamp;
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__res_vinit (res_state statp, int preinit)
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{
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char *cp, **pp;
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char buf[BUFSIZ];
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int nserv = 0; /* Number of nameservers read from file. */
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bool have_serv6 = false;
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bool haveenv = false;
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bool havesearch = false;
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int nsort = 0;
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char *net;
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statp->_u._ext.initstamp = __res_initstamp;
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if (!preinit) {
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statp->retrans = RES_TIMEOUT;
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statp->retry = RES_DFLRETRY;
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statp->options = RES_DEFAULT;
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statp->id = res_randomid();
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}
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if (!preinit)
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{
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statp->retrans = RES_TIMEOUT;
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statp->retry = RES_DFLRETRY;
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statp->options = RES_DEFAULT;
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statp->id = res_randomid ();
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}
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statp->nscount = 0;
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statp->defdname[0] = '\0';
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statp->ndots = 1;
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statp->pfcode = 0;
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statp->_vcsock = -1;
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statp->_flags = 0;
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statp->__glibc_unused_qhook = NULL;
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statp->__glibc_unused_rhook = NULL;
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statp->_u._ext.nscount = 0;
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for (n = 0; n < MAXNS; n++)
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statp->_u._ext.nsaddrs[n] = NULL;
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statp->nscount = 0;
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statp->defdname[0] = '\0';
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statp->ndots = 1;
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statp->pfcode = 0;
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statp->_vcsock = -1;
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statp->_flags = 0;
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statp->__glibc_unused_qhook = NULL;
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statp->__glibc_unused_rhook = NULL;
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statp->_u._ext.nscount = 0;
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for (int n = 0; n < MAXNS; n++)
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statp->_u._ext.nsaddrs[n] = NULL;
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/* Allow user to override the local domain definition */
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if ((cp = getenv("LOCALDOMAIN")) != NULL) {
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(void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
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statp->defdname[sizeof(statp->defdname) - 1] = '\0';
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haveenv++;
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/* Allow user to override the local domain definition. */
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if ((cp = getenv ("LOCALDOMAIN")) != NULL)
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{
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strncpy (statp->defdname, cp, sizeof (statp->defdname) - 1);
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statp->defdname[sizeof (statp->defdname) - 1] = '\0';
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haveenv = true;
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/*
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* Set search list to be blank-separated strings
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* from rest of env value. Permits users of LOCALDOMAIN
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* to still have a search list, and anyone to set the
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* one that they want to use as an individual (even more
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* important now that the rfc1535 stuff restricts searches)
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*/
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cp = statp->defdname;
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pp = statp->dnsrch;
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*pp++ = cp;
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for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
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if (*cp == '\n') /* silly backwards compat */
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break;
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else if (*cp == ' ' || *cp == '\t') {
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*cp = 0;
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n = 1;
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} else if (n) {
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*pp++ = cp;
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n = 0;
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havesearch = 1;
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}
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}
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/* null terminate last domain if there are excess */
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while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
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cp++;
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*cp = '\0';
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*pp++ = 0;
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}
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/* Set search list to be blank-separated strings from rest of
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env value. Permits users of LOCALDOMAIN to still have a
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search list, and anyone to set the one that they want to use
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as an individual (even more important now that the rfc1535
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stuff restricts searches). */
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cp = statp->defdname;
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pp = statp->dnsrch;
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*pp++ = cp;
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for (int n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++)
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{
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if (*cp == '\n')
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break;
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else if (*cp == ' ' || *cp == '\t')
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{
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*cp = 0;
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n = 1;
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}
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else if (n > 0)
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{
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*pp++ = cp;
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n = 0;
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havesearch = true;
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}
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}
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/* Null terminate last domain if there are excess. */
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while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
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cp++;
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*cp = '\0';
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*pp++ = 0;
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}
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#define MATCH(line, name) \
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(!strncmp(line, name, sizeof(name) - 1) && \
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(line[sizeof(name) - 1] == ' ' || \
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line[sizeof(name) - 1] == '\t'))
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#define MATCH(line, name) \
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(!strncmp (line, name, sizeof (name) - 1) \
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&& (line[sizeof (name) - 1] == ' ' \
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|| line[sizeof (name) - 1] == '\t'))
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if ((fp = fopen(_PATH_RESCONF, "rce")) != NULL) {
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/* No threads use this stream. */
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__fsetlocking (fp, FSETLOCKING_BYCALLER);
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/* read the config file */
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while (__fgets_unlocked(buf, sizeof(buf), fp) != NULL) {
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/* skip comments */
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if (*buf == ';' || *buf == '#')
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continue;
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/* read default domain name */
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if (MATCH(buf, "domain")) {
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if (haveenv) /* skip if have from environ */
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continue;
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cp = buf + sizeof("domain") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp == '\0') || (*cp == '\n'))
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continue;
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strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
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statp->defdname[sizeof(statp->defdname) - 1] = '\0';
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if ((cp = strpbrk(statp->defdname, " \t\n")) != NULL)
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*cp = '\0';
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havesearch = 0;
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continue;
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}
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/* set search list */
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if (MATCH(buf, "search")) {
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if (haveenv) /* skip if have from environ */
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continue;
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cp = buf + sizeof("search") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp == '\0') || (*cp == '\n'))
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continue;
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strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
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statp->defdname[sizeof(statp->defdname) - 1] = '\0';
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if ((cp = strchr(statp->defdname, '\n')) != NULL)
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*cp = '\0';
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/*
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* Set search list to be blank-separated strings
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* on rest of line.
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*/
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cp = statp->defdname;
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pp = statp->dnsrch;
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*pp++ = cp;
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for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
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if (*cp == ' ' || *cp == '\t') {
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*cp = 0;
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n = 1;
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} else if (n) {
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*pp++ = cp;
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n = 0;
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}
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}
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/* null terminate last domain if there are excess */
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while (*cp != '\0' && *cp != ' ' && *cp != '\t')
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cp++;
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*cp = '\0';
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*pp++ = 0;
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havesearch = 1;
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continue;
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}
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/* read nameservers to query */
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if (MATCH(buf, "nameserver") && nserv < MAXNS) {
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struct in_addr a;
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FILE *fp = fopen (_PATH_RESCONF, "rce");
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if (fp != NULL)
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{
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/* No threads use this stream. */
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__fsetlocking (fp, FSETLOCKING_BYCALLER);
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/* Read the config file. */
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while (__fgets_unlocked (buf, sizeof (buf), fp) != NULL)
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{
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/* Skip comments. */
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if (*buf == ';' || *buf == '#')
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continue;
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/* Read default domain name. */
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if (MATCH (buf, "domain"))
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{
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if (haveenv)
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/* LOCALDOMAIN overrides the configuration file. */
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continue;
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cp = buf + sizeof ("domain") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp == '\0') || (*cp == '\n'))
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continue;
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strncpy (statp->defdname, cp, sizeof (statp->defdname) - 1);
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statp->defdname[sizeof (statp->defdname) - 1] = '\0';
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if ((cp = strpbrk (statp->defdname, " \t\n")) != NULL)
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*cp = '\0';
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havesearch = false;
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continue;
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}
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/* Set search list. */
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if (MATCH (buf, "search"))
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{
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if (haveenv)
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/* LOCALDOMAIN overrides the configuration file. */
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continue;
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cp = buf + sizeof ("search") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp == '\0') || (*cp == '\n'))
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continue;
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strncpy (statp->defdname, cp, sizeof (statp->defdname) - 1);
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statp->defdname[sizeof (statp->defdname) - 1] = '\0';
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if ((cp = strchr (statp->defdname, '\n')) != NULL)
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*cp = '\0';
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/* Set search list to be blank-separated strings on rest
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of line. */
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cp = statp->defdname;
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pp = statp->dnsrch;
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*pp++ = cp;
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for (int n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++)
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{
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if (*cp == ' ' || *cp == '\t')
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{
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*cp = 0;
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n = 1;
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}
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else if (n)
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{
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*pp++ = cp;
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n = 0;
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}
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}
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/* Null terminate last domain if there are excess. */
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while (*cp != '\0' && *cp != ' ' && *cp != '\t')
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cp++;
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*cp = '\0';
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*pp++ = 0;
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havesearch = true;
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continue;
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}
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/* Read nameservers to query. */
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if (MATCH (buf, "nameserver") && nserv < MAXNS)
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{
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struct in_addr a;
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cp = buf + sizeof("nameserver") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp != '\0') && (*cp != '\n')
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&& __inet_aton(cp, &a)) {
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statp->nsaddr_list[nserv].sin_addr = a;
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statp->nsaddr_list[nserv].sin_family = AF_INET;
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statp->nsaddr_list[nserv].sin_port =
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htons(NAMESERVER_PORT);
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nserv++;
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} else {
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struct in6_addr a6;
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char *el;
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cp = buf + sizeof ("nameserver") - 1;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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if ((*cp != '\0') && (*cp != '\n') && __inet_aton (cp, &a))
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{
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statp->nsaddr_list[nserv].sin_addr = a;
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statp->nsaddr_list[nserv].sin_family = AF_INET;
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statp->nsaddr_list[nserv].sin_port = htons (NAMESERVER_PORT);
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nserv++;
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}
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else
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{
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struct in6_addr a6;
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char *el;
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if ((el = strpbrk(cp, " \t\n")) != NULL)
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*el = '\0';
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if ((el = strchr(cp, SCOPE_DELIMITER)) != NULL)
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*el = '\0';
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if ((*cp != '\0') &&
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(__inet_pton(AF_INET6, cp, &a6) > 0)) {
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struct sockaddr_in6 *sa6;
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if ((el = strpbrk (cp, " \t\n")) != NULL)
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*el = '\0';
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if ((el = strchr (cp, SCOPE_DELIMITER)) != NULL)
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*el = '\0';
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if ((*cp != '\0') && (__inet_pton (AF_INET6, cp, &a6) > 0))
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{
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struct sockaddr_in6 *sa6;
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sa6 = malloc(sizeof(*sa6));
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if (sa6 != NULL) {
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sa6->sin6_family = AF_INET6;
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sa6->sin6_port = htons(NAMESERVER_PORT);
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sa6->sin6_flowinfo = 0;
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sa6->sin6_addr = a6;
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sa6 = malloc (sizeof (*sa6));
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if (sa6 != NULL)
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{
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sa6->sin6_family = AF_INET6;
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sa6->sin6_port = htons (NAMESERVER_PORT);
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sa6->sin6_flowinfo = 0;
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sa6->sin6_addr = a6;
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sa6->sin6_scope_id = 0;
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if (__glibc_likely (el != NULL)) {
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/* Ignore errors, for backwards
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compatibility. */
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(void) __inet6_scopeid_pton
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(&a6, el + 1, &sa6->sin6_scope_id);
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}
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sa6->sin6_scope_id = 0;
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if (__glibc_likely (el != NULL))
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/* Ignore errors, for backwards
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compatibility. */
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__inet6_scopeid_pton
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(&a6, el + 1, &sa6->sin6_scope_id);
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statp->nsaddr_list[nserv].sin_family = 0;
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statp->_u._ext.nsaddrs[nserv] = sa6;
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statp->_u._ext.nssocks[nserv] = -1;
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have_serv6 = 1;
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nserv++;
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}
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}
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}
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continue;
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}
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if (MATCH(buf, "sortlist")) {
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struct in_addr a;
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statp->nsaddr_list[nserv].sin_family = 0;
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statp->_u._ext.nsaddrs[nserv] = sa6;
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statp->_u._ext.nssocks[nserv] = -1;
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have_serv6 = true;
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nserv++;
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}
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}
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}
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continue;
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}
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if (MATCH (buf, "sortlist"))
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{
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struct in_addr a;
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|
||||
cp = buf + sizeof("sortlist") - 1;
|
||||
while (nsort < MAXRESOLVSORT) {
|
||||
while (*cp == ' ' || *cp == '\t')
|
||||
cp++;
|
||||
if (*cp == '\0' || *cp == '\n' || *cp == ';')
|
||||
break;
|
||||
net = cp;
|
||||
while (*cp && !is_sort_mask (*cp) && *cp != ';' &&
|
||||
isascii(*cp) && !isspace(*cp))
|
||||
cp++;
|
||||
n = *cp;
|
||||
*cp = 0;
|
||||
if (__inet_aton(net, &a)) {
|
||||
statp->sort_list[nsort].addr = a;
|
||||
if (is_sort_mask (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;
|
||||
}
|
||||
if (MATCH(buf, "options")) {
|
||||
res_setoptions(statp, buf + sizeof("options") - 1, "conf");
|
||||
continue;
|
||||
}
|
||||
}
|
||||
statp->nscount = nserv;
|
||||
if (have_serv6) {
|
||||
/* We try IPv6 servers again. */
|
||||
statp->ipv6_unavail = false;
|
||||
}
|
||||
statp->nsort = nsort;
|
||||
(void) fclose(fp);
|
||||
}
|
||||
if (__glibc_unlikely (statp->nscount == 0)) {
|
||||
statp->nsaddr.sin_addr = __inet_makeaddr(IN_LOOPBACKNET, 1);
|
||||
statp->nsaddr.sin_family = AF_INET;
|
||||
statp->nsaddr.sin_port = htons(NAMESERVER_PORT);
|
||||
statp->nscount = 1;
|
||||
}
|
||||
if (statp->defdname[0] == 0 &&
|
||||
__gethostname(buf, sizeof(statp->defdname) - 1) == 0 &&
|
||||
(cp = strchr(buf, '.')) != NULL)
|
||||
strcpy(statp->defdname, cp + 1);
|
||||
cp = buf + sizeof ("sortlist") - 1;
|
||||
while (nsort < MAXRESOLVSORT)
|
||||
{
|
||||
while (*cp == ' ' || *cp == '\t')
|
||||
cp++;
|
||||
if (*cp == '\0' || *cp == '\n' || *cp == ';')
|
||||
break;
|
||||
net = cp;
|
||||
while (*cp && !is_sort_mask (*cp) && *cp != ';'
|
||||
&& isascii (*cp) && !isspace (*cp))
|
||||
cp++;
|
||||
char separator = *cp;
|
||||
*cp = 0;
|
||||
if (__inet_aton (net, &a))
|
||||
{
|
||||
statp->sort_list[nsort].addr = a;
|
||||
if (is_sort_mask (separator))
|
||||
{
|
||||
*cp++ = separator;
|
||||
net = cp;
|
||||
while (*cp && *cp != ';'
|
||||
&& isascii (*cp) && !isspace (*cp))
|
||||
cp++;
|
||||
separator = *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 = separator;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if (MATCH (buf, "options"))
|
||||
{
|
||||
res_setoptions (statp, buf + sizeof ("options") - 1, "conf");
|
||||
continue;
|
||||
}
|
||||
}
|
||||
statp->nscount = nserv;
|
||||
if (have_serv6)
|
||||
/* We try IPv6 servers again. */
|
||||
statp->ipv6_unavail = false;
|
||||
statp->nsort = nsort;
|
||||
fclose (fp);
|
||||
}
|
||||
if (__glibc_unlikely (statp->nscount == 0))
|
||||
{
|
||||
statp->nsaddr.sin_addr = __inet_makeaddr (IN_LOOPBACKNET, 1);
|
||||
statp->nsaddr.sin_family = AF_INET;
|
||||
statp->nsaddr.sin_port = htons (NAMESERVER_PORT);
|
||||
statp->nscount = 1;
|
||||
}
|
||||
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;
|
||||
/* Find components of local domain that might be searched. */
|
||||
if (!havesearch)
|
||||
{
|
||||
pp = statp->dnsrch;
|
||||
*pp++ = statp->defdname;
|
||||
*pp = NULL;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if ((cp = getenv("RES_OPTIONS")) != NULL)
|
||||
res_setoptions(statp, cp, "env");
|
||||
statp->options |= RES_INIT;
|
||||
return (0);
|
||||
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;
|
||||
res_setoptions (res_state statp, const char *options, const char *source)
|
||||
{
|
||||
const char *cp = options;
|
||||
|
||||
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;
|
||||
} 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 {
|
||||
static const struct
|
||||
{
|
||||
char str[22];
|
||||
uint8_t len;
|
||||
uint8_t clear;
|
||||
unsigned long int flag;
|
||||
} options[] = {
|
||||
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))
|
||||
{
|
||||
int i = atoi (cp + sizeof ("ndots:") - 1);
|
||||
if (i <= RES_MAXNDOTS)
|
||||
statp->ndots = i;
|
||||
else
|
||||
statp->ndots = RES_MAXNDOTS;
|
||||
}
|
||||
else if (!strncmp (cp, "timeout:", sizeof ("timeout:") - 1))
|
||||
{
|
||||
int 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))
|
||||
{
|
||||
int i = atoi (cp + sizeof ("attempts:") - 1);
|
||||
if (i <= RES_MAXRETRY)
|
||||
statp->retry = i;
|
||||
else
|
||||
statp->retry = RES_MAXRETRY;
|
||||
}
|
||||
else
|
||||
{
|
||||
static const struct
|
||||
{
|
||||
char str[22];
|
||||
uint8_t len;
|
||||
uint8_t clear;
|
||||
unsigned long int flag;
|
||||
} options[] = {
|
||||
#define STRnLEN(str) str, sizeof (str) - 1
|
||||
{ STRnLEN ("inet6"), 0, DEPRECATED_RES_USE_INET6 },
|
||||
{ STRnLEN ("rotate"), 0, RES_ROTATE },
|
||||
{ STRnLEN ("edns0"), 0, RES_USE_EDNS0 },
|
||||
{ STRnLEN ("single-request-reopen"), 0, RES_SNGLKUPREOP },
|
||||
{ STRnLEN ("single-request"), 0, RES_SNGLKUP },
|
||||
{ STRnLEN ("no_tld_query"), 0, RES_NOTLDQUERY },
|
||||
{ STRnLEN ("no-tld-query"), 0, RES_NOTLDQUERY },
|
||||
{ STRnLEN ("use-vc"), 0, RES_USEVC }
|
||||
};
|
||||
{ STRnLEN ("inet6"), 0, DEPRECATED_RES_USE_INET6 },
|
||||
{ STRnLEN ("rotate"), 0, RES_ROTATE },
|
||||
{ STRnLEN ("edns0"), 0, RES_USE_EDNS0 },
|
||||
{ STRnLEN ("single-request-reopen"), 0, RES_SNGLKUPREOP },
|
||||
{ STRnLEN ("single-request"), 0, RES_SNGLKUP },
|
||||
{ STRnLEN ("no_tld_query"), 0, RES_NOTLDQUERY },
|
||||
{ STRnLEN ("no-tld-query"), 0, RES_NOTLDQUERY },
|
||||
{ STRnLEN ("use-vc"), 0, RES_USEVC }
|
||||
};
|
||||
#define noptions (sizeof (options) / sizeof (options[0]))
|
||||
int i;
|
||||
for (i = 0; i < noptions; ++i)
|
||||
if (strncmp (cp, options[i].str, options[i].len) == 0)
|
||||
{
|
||||
if (options[i].clear)
|
||||
statp->options &= options[i].flag;
|
||||
else
|
||||
statp->options |= options[i].flag;
|
||||
break;
|
||||
}
|
||||
if (i == noptions) {
|
||||
/* XXX - print a warning here? */
|
||||
}
|
||||
}
|
||||
/* skip to next run of spaces */
|
||||
while (*cp && *cp != ' ' && *cp != '\t')
|
||||
cp++;
|
||||
}
|
||||
for (int i = 0; i < noptions; ++i)
|
||||
if (strncmp (cp, options[i].str, options[i].len) == 0)
|
||||
{
|
||||
if (options[i].clear)
|
||||
statp->options &= options[i].flag;
|
||||
else
|
||||
statp->options |= options[i].flag;
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* Skip to next run of spaces. */
|
||||
while (*cp && *cp != ' ' && *cp != '\t')
|
||||
cp++;
|
||||
}
|
||||
}
|
||||
|
||||
/* XXX - should really support CIDR which means explicit masks always. */
|
||||
/* XXX - should really use system's version of this */
|
||||
static u_int32_t
|
||||
static uint32_t
|
||||
net_mask (struct in_addr in)
|
||||
{
|
||||
u_int32_t i = ntohl(in.s_addr);
|
||||
uint32_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));
|
||||
if (IN_CLASSA (i))
|
||||
return htonl (IN_CLASSA_NET);
|
||||
else if (IN_CLASSB (i))
|
||||
return htonl (IN_CLASSB_NET);
|
||||
return htonl (IN_CLASSC_NET);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue