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no answers in DNS response should be NXDOMAIN

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This commit is contained in:
Igor Sysoev 2007-12-16 20:47:55 +00:00
parent 28bca1b6e9
commit c0cadf1f34
1 changed files with 13 additions and 10 deletions
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23
src/core/ngx_resolver.c
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@ -67,9 +67,9 @@ static void ngx_resolver_read_response(ngx_event_t *rev);
static void ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf,
size_t n);
static void ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n,
ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, ngx_uint_t i);
ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan, ngx_uint_t ans);
static void ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
ngx_uint_t ident, ngx_uint_t code);
ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan);
static ngx_resolver_node_t *ngx_resolver_lookup_name(ngx_resolver_t *r,
ngx_str_t *name, uint32_t hash);
static ngx_resolver_node_t *ngx_resolver_lookup_addr(ngx_resolver_t *r,
@ -884,11 +884,6 @@ ngx_resolver_process_response(ngx_resolver_t *r, u_char *buf, size_t n)
goto done;
}
if (code == 0 && nan == 0) {
err = "no answers in DNS response";
goto done;
}
i = sizeof(ngx_resolver_query_t);
while (i < (ngx_uint_t) n) {
@ -934,13 +929,13 @@ found:
case NGX_RESOLVE_A:
ngx_resolver_process_a(r, buf, n, ident, code, nan,
i + sizeof(ngx_resolver_qs_t));
i + sizeof(ngx_resolver_qs_t));
break;
case NGX_RESOLVE_PTR:
ngx_resolver_process_ptr(r, buf, n, ident, code);
ngx_resolver_process_ptr(r, buf, n, ident, code, nan);
break;
@ -1006,6 +1001,10 @@ ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t last,
goto failed;
}
if (code == 0 && nan == 0) {
code = 3; /* NXDOMAIN */
}
if (code) {
next = rn->waiting;
rn->waiting = NULL;
@ -1252,7 +1251,7 @@ failed:
static void
ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
ngx_uint_t ident, ngx_uint_t code)
ngx_uint_t ident, ngx_uint_t code, ngx_uint_t nan)
{
char *err;
size_t len;
@ -1309,6 +1308,10 @@ ngx_resolver_process_ptr(ngx_resolver_t *r, u_char *buf, size_t n,
goto failed;
}
if (code == 0 && nan == 0) {
code = 3; /* NXDOMAIN */
}
if (code) {
next = rn->waiting;
rn->waiting = NULL;