void
dns_rriterator_destroy(dns_rriterator_t *it) {
REQUIRE(VALID_RRITERATOR(it));
if (dns_rdataset_isassociated(&it->rdataset))
dns_rdataset_disassociate(&it->rdataset);
if (it->rdatasetit != NULL)
dns_rdatasetiter_destroy(&it->rdatasetit);
if (it->node != NULL)
dns_db_detachnode(it->db, &it->node);
dns_dbiterator_destroy(&it->dbit);
}
isc_result_t
dns_rriterator_next(dns_rriterator_t *it) {
REQUIRE(VALID_RRITERATOR(it));
if (it->result != ISC_R_SUCCESS)
return (it->result);
INSIST(it->dbit != NULL);
INSIST(it->node != NULL);
INSIST(it->rdatasetit != NULL);
it->result = dns_rdataset_next(&it->rdataset);
if (it->result == ISC_R_NOMORE)
return (dns_rriterator_nextrrset(it));
return (it->result);
}
isc_result_t
dns_rriterator_first(dns_rriterator_t *it) {
REQUIRE(VALID_RRITERATOR(it));
/* Reset state */
if (dns_rdataset_isassociated(&it->rdataset))
dns_rdataset_disassociate(&it->rdataset);
if (it->rdatasetit != NULL)
dns_rdatasetiter_destroy(&it->rdatasetit);
if (it->node != NULL)
dns_db_detachnode(it->db, &it->node);
it->result = dns_dbiterator_first(it->dbit);
/*
* The top node may be empty when out of zone glue exists.
* Walk the tree to find the first node with data.
*/
while (it->result == ISC_R_SUCCESS) {
it->result = dns_dbiterator_current(it->dbit, &it->node,
dns_fixedname_name(&it->fixedname));
if (it->result != ISC_R_SUCCESS)
return (it->result);
it->result = dns_db_allrdatasets(it->db, it->node, it->ver,
it->now, &it->rdatasetit);
if (it->result != ISC_R_SUCCESS)
return (it->result);
it->result = dns_rdatasetiter_first(it->rdatasetit);
if (it->result != ISC_R_SUCCESS) {
/*
* This node is empty. Try next node.
*/
dns_rdatasetiter_destroy(&it->rdatasetit);
dns_db_detachnode(it->db, &it->node);
it->result = dns_dbiterator_next(it->dbit);
continue;
}
dns_rdatasetiter_current(it->rdatasetit, &it->rdataset);
dns_rdataset_getownercase(&it->rdataset,
dns_fixedname_name(&it->fixedname));
it->rdataset.attributes |= DNS_RDATASETATTR_LOADORDER;
it->result = dns_rdataset_first(&it->rdataset);
return (it->result);
}
return (it->result);
}
isc_result_t
dns_rriterator_nextrrset(dns_rriterator_t *it) {
REQUIRE(VALID_RRITERATOR(it));
if (dns_rdataset_isassociated(&it->rdataset))
dns_rdataset_disassociate(&it->rdataset);
it->result = dns_rdatasetiter_next(it->rdatasetit);
/*
* The while loop body is executed more than once
* only when an empty dbnode needs to be skipped.
*/
while (it->result == ISC_R_NOMORE) {
dns_rdatasetiter_destroy(&it->rdatasetit);
dns_db_detachnode(it->db, &it->node);
it->result = dns_dbiterator_next(it->dbit);
if (it->result == ISC_R_NOMORE) {
/* We are at the end of the entire database. */
return (it->result);
}
if (it->result != ISC_R_SUCCESS)
return (it->result);
it->result = dns_dbiterator_current(it->dbit, &it->node,
dns_fixedname_name(&it->fixedname));
if (it->result != ISC_R_SUCCESS)
return (it->result);
it->result = dns_db_allrdatasets(it->db, it->node, it->ver,
it->now, &it->rdatasetit);
if (it->result != ISC_R_SUCCESS)
return (it->result);
it->result = dns_rdatasetiter_first(it->rdatasetit);
}
if (it->result != ISC_R_SUCCESS)
return (it->result);
dns_rdatasetiter_current(it->rdatasetit, &it->rdataset);
dns_rdataset_getownercase(&it->rdataset,
dns_fixedname_name(&it->fixedname));
it->rdataset.attributes |= DNS_RDATASETATTR_LOADORDER;
it->result = dns_rdataset_first(&it->rdataset);
return (it->result);
}
void
dns_rriterator_current(dns_rriterator_t *it, dns_name_t **name,
isc_uint32_t *ttl, dns_rdataset_t **rdataset,
dns_rdata_t **rdata)
{
REQUIRE(name != NULL && *name == NULL);
REQUIRE(VALID_RRITERATOR(it));
REQUIRE(it->result == ISC_R_SUCCESS);
REQUIRE(rdataset == NULL || *rdataset == NULL);
REQUIRE(rdata == NULL || *rdata == NULL);
*name = dns_fixedname_name(&it->fixedname);
*ttl = it->rdataset.ttl;
dns_rdata_reset(&it->rdata);
dns_rdataset_current(&it->rdataset, &it->rdata);
if (rdataset != NULL)
*rdataset = &it->rdataset;
if (rdata != NULL)
*rdata = &it->rdata;
}
void
dns_rriterator_pause(dns_rriterator_t *it) {
REQUIRE(VALID_RRITERATOR(it));
RUNTIME_CHECK(dns_dbiterator_pause(it->dbit) == ISC_R_SUCCESS);
}