clash/component/geodata/utils.go
adlyq 7431001ed6 feat: RESTful API support update Geo file
and can set update url by user, eg.
geox-url:
  geoip: "http://xxxx/gepip.dat"
  mmdb: "http://xxxx/country.mmdb"
  geosite: "http://xxxx/geosite.dat"
2022-05-24 15:04:13 +08:00

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package geodata
import (
"fmt"
"github.com/Dreamacro/clash/component/geodata/router"
C "github.com/Dreamacro/clash/constant"
)
var geoLoaderName = "memconservative"
// geoLoaderName = "standard"
func LoaderName() string {
return geoLoaderName
}
func SetLoader(newLoader string) {
if newLoader == "memc" {
newLoader = "memconservative"
}
geoLoaderName = newLoader
}
func Verify(name string) error {
switch name {
case C.GeositeName:
_, _, err := LoadGeoSiteMatcher("CN")
return err
case C.GeoipName:
_, _, err := LoadGeoIPMatcher("CN")
return err
default:
return fmt.Errorf("not support name")
}
}
func LoadGeoSiteMatcher(countryCode string) (*router.DomainMatcher, int, error) {
if len(countryCode) == 0 {
return nil, 0, fmt.Errorf("country code could not be empty")
}
not := false
if countryCode[0] == '!' {
not = true
countryCode = countryCode[1:]
}
geoLoader, err := GetGeoDataLoader(geoLoaderName)
if err != nil {
return nil, 0, err
}
domains, err := geoLoader.LoadGeoSite(countryCode)
if err != nil {
return nil, 0, err
}
/**
linear: linear algorithm
matcher, err := router.NewDomainMatcher(domains)
mphminimal perfect hash algorithm
*/
matcher, err := router.NewMphMatcherGroup(domains, not)
if err != nil {
return nil, 0, err
}
return matcher, len(domains), nil
}
func LoadGeoIPMatcher(country string) (*router.GeoIPMatcher, int, error) {
if len(country) == 0 {
return nil, 0, fmt.Errorf("country code could not be empty")
}
geoLoader, err := GetGeoDataLoader(geoLoaderName)
if err != nil {
return nil, 0, err
}
not := false
if country[0] == '!' {
not = true
country = country[1:]
}
records, err := geoLoader.LoadGeoIP(country)
if err != nil {
return nil, 0, err
}
geoIP := &router.GeoIP{
CountryCode: country,
Cidr: records,
ReverseMatch: not,
}
matcher, err := router.NewGeoIPMatcher(geoIP)
if err != nil {
return nil, 0, err
}
return matcher, len(records), nil
}