/
geoip.go
141 lines (115 loc) · 2.69 KB
/
geoip.go
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package main
import (
"github.com/abh/geodns/Godeps/_workspace/src/github.com/abh/geoip"
"github.com/abh/geodns/countries"
"log"
"net"
"strings"
"time"
)
type GeoIP struct {
country *geoip.GeoIP
hasCountry bool
countryLastLoad time.Time
city *geoip.GeoIP
cityLastLoad time.Time
hasCity bool
asn *geoip.GeoIP
hasAsn bool
asnLastLoad time.Time
}
var geoIP = new(GeoIP)
func (g *GeoIP) GetCountry(ip net.IP) (country, continent string, netmask int) {
if g.country == nil {
return "", "", 0
}
country, netmask = geoIP.country.GetCountry(ip.String())
if len(country) > 0 {
country = strings.ToLower(country)
continent = countries.CountryContinent[country]
}
return
}
func (g *GeoIP) GetCountryRegion(ip net.IP) (country, continent, regionGroup, region string, netmask int) {
if g.city == nil {
log.Println("No city database available")
country, continent, netmask = g.GetCountry(ip)
return
}
record := geoIP.city.GetRecord(ip.String())
if record == nil {
return
}
country = record.CountryCode
region = record.Region
if len(country) > 0 {
country = strings.ToLower(country)
continent = countries.CountryContinent[country]
if len(region) > 0 {
region = country + "-" + strings.ToLower(region)
regionGroup = countries.CountryRegionGroup(country, region)
}
}
return
}
func (g *GeoIP) GetASN(ip net.IP) (asn string, netmask int) {
if g.asn == nil {
log.Println("No asn database available")
return
}
name, netmask := g.asn.GetName(ip.String())
if len(name) > 0 {
index := strings.Index(name, " ")
if index > 0 {
asn = strings.ToLower(name[:index])
}
}
return
}
func (g *GeoIP) setDirectory() {
if len(Config.GeoIP.Directory) > 0 {
geoip.SetCustomDirectory(Config.GeoIP.Directory)
}
}
func (g *GeoIP) setupGeoIPCountry() {
if g.country != nil {
return
}
g.setDirectory()
gi, err := geoip.OpenType(geoip.GEOIP_COUNTRY_EDITION)
if gi == nil || err != nil {
log.Printf("Could not open country GeoIP database: %s\n", err)
return
}
g.countryLastLoad = time.Now()
g.hasCity = true
g.country = gi
}
func (g *GeoIP) setupGeoIPCity() {
if g.city != nil {
return
}
g.setDirectory()
gi, err := geoip.OpenType(geoip.GEOIP_CITY_EDITION_REV1)
if gi == nil || err != nil {
log.Printf("Could not open city GeoIP database: %s\n", err)
return
}
g.cityLastLoad = time.Now()
g.hasCity = true
g.city = gi
}
func (g *GeoIP) setupGeoIPASN() {
if g.asn != nil {
return
}
g.setDirectory()
gi, err := geoip.OpenType(geoip.GEOIP_ASNUM_EDITION)
if gi == nil || err != nil {
log.Printf("Could not open ASN GeoIP database: %s\n", err)
return
}
g.asnLastLoad = time.Now()
g.hasAsn = true
g.asn = gi
}