#include <config.h>
#include <isc/util.h>
#include <dns/rdata.h>
#include <dns/soa.h>
static inline isc_uint32_t
decode_uint32(unsigned char *p) {
return ((p[0] << 24) +
(p[1] << 16) +
(p[2] << 8) +
(p[3] << 0));
}
static inline void
encode_uint32(isc_uint32_t val, unsigned char *p) {
p[0] = (isc_uint8_t)(val >> 24);
p[1] = (isc_uint8_t)(val >> 16);
p[2] = (isc_uint8_t)(val >> 8);
p[3] = (isc_uint8_t)(val >> 0);
}
static isc_uint32_t
soa_get(dns_rdata_t *rdata, int offset) {
INSIST(rdata->type == dns_rdatatype_soa);
INSIST(rdata->length >= 20);
INSIST(offset >= 0 && offset <= 16);
return (decode_uint32(rdata->data + rdata->length - 20 + offset));
}
isc_uint32_t
dns_soa_getserial(dns_rdata_t *rdata) {
return soa_get(rdata, 0);
}
isc_uint32_t
dns_soa_getrefresh(dns_rdata_t *rdata) {
return soa_get(rdata, 4);
}
isc_uint32_t
dns_soa_getretry(dns_rdata_t *rdata) {
return soa_get(rdata, 8);
}
isc_uint32_t
dns_soa_getexpire(dns_rdata_t *rdata) {
return soa_get(rdata, 12);
}
isc_uint32_t
dns_soa_getminimum(dns_rdata_t *rdata) {
return soa_get(rdata, 16);
}
static void
soa_set(dns_rdata_t *rdata, isc_uint32_t val, int offset) {
INSIST(rdata->type == dns_rdatatype_soa);
INSIST(rdata->length >= 20);
INSIST(offset >= 0 && offset <= 16);
encode_uint32(val, rdata->data + rdata->length - 20 + offset);
}
void
dns_soa_setserial(isc_uint32_t val, dns_rdata_t *rdata) {
soa_set(rdata, val, 0);
}
void
dns_soa_setrefresh(isc_uint32_t val, dns_rdata_t *rdata) {
soa_set(rdata, val, 4);
}
void
dns_soa_setretry(isc_uint32_t val, dns_rdata_t *rdata) {
soa_set(rdata, val, 8);
}
void
dns_soa_setexpire(isc_uint32_t val, dns_rdata_t *rdata) {
soa_set(rdata, val, 12);
}
void
dns_soa_setminimum(isc_uint32_t val, dns_rdata_t *rdata) {
soa_set(rdata, val, 16);
}