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glibc/glibc-rh168253-res_vinit-gnu-style.patch
Florian Weimer 8597553f96 Rebase DNS stub resolver to the glibc 2.26 version 
- Support an arbitrary number of search domains (#168253)
- Detect and apply /etc/resolv.conf changes in libresolv (#1374239)
- CVE-2015-5180: DNS stub resolver crash with crafted record type (#1251403)
2017-10-11 14:41:27 +02:00

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commit 4c4480eecb2e00764dd3bf79d68ea4e1d747d78c
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jun 19 13:20:46 2017 +0200
resolv: Reformat res_vinit and related functions to GNU style
Also remove some obsolete comments.
diff --git a/resolv/res_init.c b/resolv/res_init.c
index eb8e308fdaa899ef..49fc94595bfe147f 100644
--- a/resolv/res_init.c
+++ b/resolv/res_init.c
@@ -1,3 +1,21 @@
+/* Resolver state initialization and resolv.conf parsing.
+ Copyright (C) 1995-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
/*
* Copyright (c) 1985, 1989, 1993
* The Regents of the University of California. All rights reserved.
@@ -83,26 +101,15 @@
#include <sys/types.h>
#include <inet/net-internal.h>
-static void res_setoptions (res_state, const char *, const char *)
- internal_function;
-static u_int32_t net_mask (struct in_addr) __THROW;
+static void res_setoptions (res_state, const char *, const char *);
+static uint32_t net_mask (struct in_addr);
unsigned long long int __res_initstamp attribute_hidden;
-/*
- * 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_LOOPBACK and the default domain name comes from gethostname.
- *
- * Return 0 if completes successfully, -1 on error
- */
int
-res_ninit(res_state statp) {
- return (__res_vinit(statp, 0));
+res_ninit (res_state statp)
+{
+ return __res_vinit (statp, 0);
}
libc_hidden_def (__res_ninit)
@@ -114,349 +121,374 @@ is_sort_mask (char ch)
return ch == '/' || ch == '&';
}
-/* This function has to be reachable by res_data.c but not publically. */
+/* Set up default settings. If the /etc/resolv.conf configuration
+ file exist, the values there will have precedence. Otherwise, the
+ server address is set to INADDR_LOOPBACK and the default domain
+ name comes from gethostname. The RES_OPTIONS and LOCALDOMAIN
+ environment variables can be used to override some settings.
+ Return 0 if completes successfully, -1 on error. */
int
-__res_vinit(res_state statp, int preinit) {
- FILE *fp;
- char *cp, **pp;
- int n;
- char buf[BUFSIZ];
- int nserv = 0; /* number of nameservers read from file */
- int have_serv6 = 0;
- int haveenv = 0;
- int havesearch = 0;
- int nsort = 0;
- char *net;
- statp->_u._ext.initstamp = __res_initstamp;
+__res_vinit (res_state statp, int preinit)
+{
+ char *cp, **pp;
+ char buf[BUFSIZ];
+ int nserv = 0; /* Number of nameservers read from file. */
+ bool have_serv6 = false;
+ bool haveenv = false;
+ bool havesearch = false;
+ int nsort = 0;
+ char *net;
+ statp->_u._ext.initstamp = __res_initstamp;
- if (!preinit) {
- statp->retrans = RES_TIMEOUT;
- statp->retry = RES_DFLRETRY;
- statp->options = RES_DEFAULT;
- statp->id = res_randomid();
- }
+ if (!preinit)
+ {
+ statp->retrans = RES_TIMEOUT;
+ statp->retry = RES_DFLRETRY;
+ statp->options = RES_DEFAULT;
+ statp->id = res_randomid ();
+ }
- statp->nscount = 0;
- statp->defdname[0] = '\0';
- statp->ndots = 1;
- statp->pfcode = 0;
- statp->_vcsock = -1;
- statp->_flags = 0;
- statp->__glibc_unused_qhook = NULL;
- statp->__glibc_unused_rhook = NULL;
- statp->_u._ext.nscount = 0;
- for (n = 0; n < MAXNS; n++)
- statp->_u._ext.nsaddrs[n] = NULL;
+ statp->nscount = 0;
+ statp->defdname[0] = '\0';
+ statp->ndots = 1;
+ statp->pfcode = 0;
+ statp->_vcsock = -1;
+ statp->_flags = 0;
+ statp->__glibc_unused_qhook = NULL;
+ statp->__glibc_unused_rhook = NULL;
+ statp->_u._ext.nscount = 0;
+ for (int n = 0; n < MAXNS; n++)
+ statp->_u._ext.nsaddrs[n] = NULL;
- /* 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++;
+ /* Allow user to override the local domain definition. */
+ if ((cp = getenv ("LOCALDOMAIN")) != NULL)
+ {
+ strncpy (statp->defdname, cp, sizeof (statp->defdname) - 1);
+ statp->defdname[sizeof (statp->defdname) - 1] = '\0';
+ haveenv = true;
- /*
- * 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;
- }
+ /* 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 (int n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++)
+ {
+ if (*cp == '\n')
+ break;
+ else if (*cp == ' ' || *cp == '\t')
+ {
+ *cp = 0;
+ n = 1;
+ }
+ else if (n > 0)
+ {
+ *pp++ = cp;
+ n = 0;
+ havesearch = true;
+ }
+ }
+ /* 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'))
+#define MATCH(line, name) \
+ (!strncmp (line, name, sizeof (name) - 1) \
+ && (line[sizeof (name) - 1] == ' ' \
+ || line[sizeof (name) - 1] == '\t'))
- if ((fp = fopen(_PATH_RESCONF, "rce")) != NULL) {
- /* No threads use this stream. */
- __fsetlocking (fp, FSETLOCKING_BYCALLER);
- /* read the config file */
- while (__fgets_unlocked(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 in_addr a;
+ FILE *fp = fopen (_PATH_RESCONF, "rce");
+ if (fp != NULL)
+ {
+ /* No threads use this stream. */
+ __fsetlocking (fp, FSETLOCKING_BYCALLER);
+ /* Read the config file. */
+ while (__fgets_unlocked (buf, sizeof (buf), fp) != NULL)
+ {
+ /* Skip comments. */
+ if (*buf == ';' || *buf == '#')
+ continue;
+ /* Read default domain name. */
+ if (MATCH (buf, "domain"))
+ {
+ if (haveenv)
+ /* LOCALDOMAIN overrides the configuration file. */
+ 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 = false;
+ continue;
+ }
+ /* Set search list. */
+ if (MATCH (buf, "search"))
+ {
+ if (haveenv)
+ /* LOCALDOMAIN overrides the configuration file. */
+ 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 (int 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 = true;
+ 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)) {
- 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++;
- } else {
- struct in6_addr a6;
- char *el;
+ 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++;
+ }
+ else
+ {
+ struct in6_addr a6;
+ char *el;
- if ((el = strpbrk(cp, " \t\n")) != NULL)
- *el = '\0';
- if ((el = strchr(cp, SCOPE_DELIMITER)) != NULL)
- *el = '\0';
- if ((*cp != '\0') &&
- (__inet_pton(AF_INET6, cp, &a6) > 0)) {
- struct sockaddr_in6 *sa6;
+ if ((el = strpbrk (cp, " \t\n")) != NULL)
+ *el = '\0';
+ if ((el = strchr (cp, SCOPE_DELIMITER)) != 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_family = AF_INET6;
- sa6->sin6_port = htons(NAMESERVER_PORT);
- sa6->sin6_flowinfo = 0;
- sa6->sin6_addr = a6;
+ sa6 = malloc (sizeof (*sa6));
+ if (sa6 != NULL)
+ {
+ sa6->sin6_family = AF_INET6;
+ sa6->sin6_port = htons (NAMESERVER_PORT);
+ sa6->sin6_flowinfo = 0;
+ sa6->sin6_addr = a6;
- sa6->sin6_scope_id = 0;
- if (__glibc_likely (el != NULL)) {
- /* Ignore errors, for backwards
- compatibility. */
- (void) __inet6_scopeid_pton
- (&a6, el + 1, &sa6->sin6_scope_id);
- }
+ sa6->sin6_scope_id = 0;
+ if (__glibc_likely (el != NULL))
+ /* Ignore errors, for backwards
+ compatibility. */
+ __inet6_scopeid_pton
+ (&a6, el + 1, &sa6->sin6_scope_id);
- statp->nsaddr_list[nserv].sin_family = 0;
- statp->_u._ext.nsaddrs[nserv] = sa6;
- statp->_u._ext.nssocks[nserv] = -1;
- have_serv6 = 1;
- nserv++;
- }
- }
- }
- continue;
- }
- if (MATCH(buf, "sortlist")) {
- struct in_addr a;
+ statp->nsaddr_list[nserv].sin_family = 0;
+ statp->_u._ext.nsaddrs[nserv] = sa6;
+ statp->_u._ext.nssocks[nserv] = -1;
+ have_serv6 = true;
+ nserv++;
+ }
+ }
+ }
+ continue;
+ }
+ 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 && !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);
}
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