summaryrefslogtreecommitdiffstats
path: root/lib/libc/resolv/res_init.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/resolv/res_init.c')
-rw-r--r--lib/libc/resolv/res_init.c112
1 files changed, 97 insertions, 15 deletions
diff --git a/lib/libc/resolv/res_init.c b/lib/libc/resolv/res_init.c
index fd82e872..a42eb80 100644
--- a/lib/libc/resolv/res_init.c
+++ b/lib/libc/resolv/res_init.c
@@ -70,11 +70,15 @@
#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 1.9.2.5.4.6 2006/08/30 23:23:01 marka Exp $";
+static const char rcsid[] = "$Id: res_init.c,v 1.9.2.5.4.5 2005/11/03 00:00:52 marka Exp $";
#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
#include "port_before.h"
+#include "namespace.h"
+
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
@@ -91,6 +95,8 @@ static const char rcsid[] = "$Id: res_init.c,v 1.9.2.5.4.6 2006/08/30 23:23:01 m
#include <unistd.h>
#include <netdb.h>
+#include "un-namespace.h"
+
#include "port_after.h"
/* ensure that sockaddr_in6 and IN6ADDR_ANY_INIT are declared / defined */
@@ -106,12 +112,12 @@ static const char rcsid[] = "$Id: res_init.c,v 1.9.2.5.4.6 2006/08/30 23:23:01 m
#include <sys/systeminfo.h>
#endif
-static void res_setoptions __P((res_state, const char *, const char *));
+static void res_setoptions(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));
+static u_int32_t net_mask(struct in_addr);
#endif
#if !defined(isascii) /* XXX - could be a function */
@@ -153,9 +159,9 @@ res_ninit(res_state statp) {
/* 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;
+ FILE *fp;
+ char *cp, **pp;
+ int n;
char buf[BUFSIZ];
int nserv = 0; /* number of nameserver records read from file */
int haveenv = 0;
@@ -237,16 +243,23 @@ __res_vinit(res_state statp, int preinit) {
if (buf[0] == '+')
buf[0] = '.';
cp = strchr(buf, '.');
- cp = (cp == NULL) ? buf : (cp + 1);
- if (strlen(cp) >= sizeof(statp->defdname))
- goto freedata;
- strcpy(statp->defdname, cp);
+ if (cp == NULL) {
+ if (strlcpy(statp->defdname, buf,
+ sizeof(statp->defdname))
+ >= sizeof(statp->defdname))
+ goto freedata;
+ } else {
+ if (strlcpy(statp->defdname, cp+1,
+ sizeof(statp->defdname))
+ >= sizeof(statp->defdname))
+ goto freedata;
+ }
}
}
#endif /* SOLARIS2 */
/* Allow user to override the local domain definition */
- if ((cp = getenv("LOCALDOMAIN")) != NULL) {
+ if (issetugid() == 0 && (cp = getenv("LOCALDOMAIN")) != NULL) {
(void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
statp->defdname[sizeof(statp->defdname) - 1] = '\0';
haveenv++;
@@ -383,6 +396,10 @@ __res_vinit(res_state statp, int preinit) {
#ifdef RESOLVSORT
if (MATCH(buf, "sortlist")) {
struct in_addr a;
+ struct in6_addr a6;
+ int m, i;
+ u_char *u;
+ struct __res_state_ext *ext = statp->_u._ext.ext;
cp = buf + sizeof("sortlist") - 1;
while (nsort < MAXRESOLVSORT) {
@@ -417,6 +434,57 @@ __res_vinit(res_state statp, int preinit) {
statp->sort_list[nsort].mask =
net_mask(statp->sort_list[nsort].addr);
}
+ ext->sort_list[nsort].af = AF_INET;
+ ext->sort_list[nsort].addr.ina =
+ statp->sort_list[nsort].addr;
+ ext->sort_list[nsort].mask.ina.s_addr =
+ statp->sort_list[nsort].mask;
+ nsort++;
+ }
+ else if (inet_pton(AF_INET6, net, &a6) == 1) {
+
+ ext->sort_list[nsort].af = AF_INET6;
+ ext->sort_list[nsort].addr.in6a = a6;
+ u = (u_char *)&ext->sort_list[nsort].mask.in6a;
+ *cp++ = n;
+ net = cp;
+ while (*cp && *cp != ';' &&
+ isascii(*cp) && !isspace(*cp))
+ cp++;
+ m = n;
+ n = *cp;
+ *cp = 0;
+ switch (m) {
+ case '/':
+ m = atoi(net);
+ break;
+ case '&':
+ if (inet_pton(AF_INET6, net, u) == 1) {
+ m = -1;
+ break;
+ }
+ /*FALLTHROUGH*/
+ default:
+ m = sizeof(struct in6_addr) * CHAR_BIT;
+ break;
+ }
+ if (m >= 0) {
+ for (i = 0; i < sizeof(struct in6_addr); i++) {
+ if (m <= 0) {
+ *u = 0;
+ } else {
+ m -= CHAR_BIT;
+ *u = (u_char)~0;
+ if (m < 0)
+ *u <<= -m;
+ }
+ u++;
+ }
+ }
+ statp->sort_list[nsort].addr.s_addr =
+ (u_int32_t)0xffffffff;
+ statp->sort_list[nsort].mask =
+ (u_int32_t)0xffffffff;
nsort++;
}
*cp = n;
@@ -479,7 +547,9 @@ __res_vinit(res_state statp, int preinit) {
#endif
}
- if ((cp = getenv("RES_OPTIONS")) != NULL)
+ if (issetugid())
+ statp->options |= RES_NOALIASES;
+ else if ((cp = getenv("RES_OPTIONS")) != NULL)
res_setoptions(statp, cp, "env");
statp->options |= RES_INIT;
return (0);
@@ -499,7 +569,9 @@ res_setoptions(res_state statp, const char *options, const char *source)
{
const char *cp = options;
int i;
+#ifndef _LIBC
struct __res_state_ext *ext = statp->_u._ext.ext;
+#endif
#ifdef DEBUG
if (statp->options & RES_DEBUG)
@@ -573,6 +645,10 @@ res_setoptions(res_state statp, const char *options, const char *source)
statp->options |= RES_NOTLDQUERY;
} else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {
statp->options |= RES_USE_INET6;
+ } else if (!strncmp(cp, "insecure1", sizeof("insecure1") - 1)) {
+ statp->options |= RES_INSECURE1;
+ } else if (!strncmp(cp, "insecure2", sizeof("insecure2") - 1)) {
+ statp->options |= RES_INSECURE2;
} else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) {
statp->options |= RES_ROTATE;
} else if (!strncmp(cp, "no-check-names",
@@ -584,6 +660,7 @@ res_setoptions(res_state statp, const char *options, const char *source)
statp->options |= RES_USE_EDNS0;
}
#endif
+#ifndef _LIBC
else if (!strncmp(cp, "dname", sizeof("dname") - 1)) {
statp->options |= RES_USE_DNAME;
}
@@ -613,10 +690,13 @@ res_setoptions(res_state statp, const char *options, const char *source)
~RES_NO_NIBBLE2;
}
}
+#endif
else {
/* XXX - print a warning here? */
}
+#ifndef _LIBC
skip:
+#endif
/* skip to next run of spaces */
while (*cp && *cp != ' ' && *cp != '\t')
cp++;
@@ -629,7 +709,7 @@ 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);
+ u_int32_t i = ntohl(in.s_addr);
if (IN_CLASSA(i))
return (htonl(IN_CLASSA_NET));
@@ -659,13 +739,13 @@ res_nclose(res_state statp) {
int ns;
if (statp->_vcsock >= 0) {
- (void) close(statp->_vcsock);
+ (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]);
+ (void) _close(statp->_u._ext.nssocks[ns]);
statp->_u._ext.nssocks[ns] = -1;
}
}
@@ -680,6 +760,7 @@ res_ndestroy(res_state statp) {
statp->_u._ext.ext = NULL;
}
+#ifndef _LIBC
const char *
res_get_nibblesuffix(res_state statp) {
if (statp->_u._ext.ext)
@@ -693,6 +774,7 @@ res_get_nibblesuffix2(res_state statp) {
return (statp->_u._ext.ext->nsuffix2);
return ("ip6.int");
}
+#endif
void
res_setservers(res_state statp, const union res_sockaddr_union *set, int cnt) {
OpenPOWER on IntegriCloud