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1554. [bug] dig, host, nsloolup failed when no nameservers

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were specified in /etc/resolv.conf. [RT #8232]
This commit is contained in:
Mark Andrews 2004-01-12 03:39:29 +00:00
parent 75c47a7a83
commit 9cc75a3e5b
2 changed files with 36 additions and 5 deletions
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3
CHANGES
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@ -1,3 +1,6 @@
1554. [bug] dig, host, nsloolup failed when no nameservers
were specified in /etc/resolv.conf. [RT #8232]
1553. [bug] The windows socket code could stop accepting
connections.

38
bin/dig/dighost.c
View File

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dighost.c,v 1.257 2003/07/25 04:02:54 marka Exp $ */
/* $Id: dighost.c,v 1.258 2004/01/12 03:39:29 marka Exp $ */
/*
* Notice to programmers: Do not use this code as an example of how to
@ -67,6 +67,14 @@
#include <dig/dig.h>
#if ! defined(NS_INADDRSZ)
#define NS_INADDRSZ 4
#endif
#if ! defined(NS_IN6ADDRSZ)
#define NS_IN6ADDRSZ 16
#endif
static lwres_context_t *lwctx = NULL;
static lwres_conf_t *lwconf;
@ -416,7 +424,20 @@ add_nameserver(lwres_conf_t *confdata, const char *addr, int af) {
if (confdata->nsnext >= LWRES_CONFMAXNAMESERVERS)
return (ISC_R_FAILURE);
if (lwres_net_pton(af, addr, &confdata->nameservers[i]) == 1) {
switch (af) {
case AF_INET:
confdata->nameservers[i].family = LWRES_ADDRTYPE_V4;
confdata->nameservers[i].length = NS_INADDRSZ;
break;
case AF_INET6:
confdata->nameservers[i].family = LWRES_ADDRTYPE_V6;
confdata->nameservers[i].length = NS_IN6ADDRSZ;
break;
default:
return (ISC_R_FAILURE);
}
if (lwres_net_pton(af, addr, &confdata->nameservers[i].address) == 1) {
confdata->nsnext++;
return (ISC_R_SUCCESS);
}
@ -734,9 +755,16 @@ setup_system(void) {
/* If we don't find a nameserver fall back to localhost */
if (lwconf->nsnext == 0) {
lwresult = add_nameserver(lwconf, "127.0.0.1", AF_INET);
if(lwresult != ISC_R_SUCCESS)
fatal("add_nameserver failed");
if (have_ipv4) {
lwresult = add_nameserver(lwconf, "127.0.0.1", AF_INET);
if(lwresult != ISC_R_SUCCESS)
fatal("add_nameserver failed");
}
if (have_ipv6) {
lwresult = add_nameserver(lwconf, "::1", AF_INET6);
if(lwresult != ISC_R_SUCCESS)
fatal("add_nameserver failed");
}
}
if (ISC_LIST_EMPTY(server_list))