/*
* GeoIPRegion lookups are performed if the previous lookup was
* from a different IP address than the current, or was for a search
* outside the Region database.
*/
static GeoIPRegion *
region_lookup(GeoIP *db, dns_geoip_subtype_t subtype,
isc_uint32_t ipnum, isc_uint8_t *scope)
{
GeoIPRegion *region = NULL;
geoip_state_t *prev_state = NULL;
GeoIPLookup gl;
REQUIRE(db != NULL);
prev_state = get_state_for(AF_INET, ipnum, NULL);
if (prev_state != NULL && is_region(prev_state->subtype)) {
region = prev_state->region;
if (scope != NULL)
*scope = prev_state->scope;
}
if (region == NULL) {
region = GeoIP_region_by_ipnum_gl(db, ipnum, &gl);
if (region == NULL)
return (NULL);
if (scope != NULL)
*scope = gl.netmask;
set_state(AF_INET, ipnum, NULL, gl.netmask,
subtype, NULL, region, NULL, NULL, 0);
}
return (region);
}
/*
* GeoIPRegion lookups are performed if the previous lookup was
* from a different IP address than the current, or was for a search
* outside the Region database.
*/
static GeoIPRegion *
region_lookup(GeoIP *db, dns_geoip_subtype_t subtype, isc_uint32_t ipnum) {
GeoIPRegion *region = NULL;
geoip_state_t *prev_state = NULL;
REQUIRE(db != NULL);
prev_state = get_state_for(AF_INET, ipnum, NULL);
if (prev_state != NULL && is_region(prev_state->subtype))
region = prev_state->region;
if (region == NULL) {
region = GeoIP_region_by_ipnum(db, ipnum);
if (region == NULL)
return (NULL);
set_state(AF_INET, ipnum, NULL,
subtype, NULL, region, NULL, NULL, 0);
}
return (region);
}