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findzonecut: helper function for hints lookup

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Extract `view_dns_findzonecut()` hints lookup parts in a separate
helper function.
This commit is contained in:
Colin Vidal 2025-12-16 14:20:32 +01:00
parent d0cec705ab
commit 1b68638448
1 changed files with 21 additions and 16 deletions
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37
lib/dns/view.c
View file

@ -983,6 +983,26 @@ dns_view_simplefind(dns_view_t *view, const dns_name_t *name,
return result;
}
static isc_result_t
findzonecut_hints(dns_view_t *view, dns_name_t *fname, dns_name_t *dcname,
isc_stdtime_t now, dns_rdataset_t *rdataset) {
isc_result_t result = ISC_R_NOTFOUND;
if (view->hints == NULL) {
return result;
}
result = dns_db_find(view->hints, dns_rootname, NULL, dns_rdatatype_ns,
0, now, NULL, fname, rdataset, NULL);
if (result != ISC_R_SUCCESS) {
dns_rdataset_cleanup(rdataset);
} else if (dcname != NULL) {
dns_name_copy(fname, dcname);
}
return result;
}
isc_result_t
dns_view_findzonecut(dns_view_t *view, const dns_name_t *name,
dns_name_t *fname, dns_name_t *dcname, isc_stdtime_t now,
@ -1149,22 +1169,7 @@ finish:
dns_rdataset_clone(&zsigrdataset, sigrdataset);
}
} else if (try_hints) {
/*
* We've found nothing so far, but we have hints.
*/
result = dns_db_find(view->hints, dns_rootname, NULL,
dns_rdatatype_ns, 0, now, NULL, fname,
rdataset, NULL);
if (result != ISC_R_SUCCESS) {
/*
* We can't even find the hints for the root
* nameservers!
*/
dns_rdataset_cleanup(rdataset);
result = ISC_R_NOTFOUND;
} else if (dcname != NULL) {
dns_name_copy(fname, dcname);
}
result = findzonecut_hints(view, fname, dcname, now, rdataset);
}
cleanup: