clash/rule/geosite.go

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package rules
import (
"fmt"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/rule/geodata"
//_ "github.com/Dreamacro/clash/rule/geodata/memconservative"
"github.com/Dreamacro/clash/rule/geodata/router"
_ "github.com/Dreamacro/clash/rule/geodata/standard"
)
type GEOSITE struct {
country string
adapter string
ruleExtra *C.RuleExtra
matcher *router.DomainMatcher
}
func (gs *GEOSITE) RuleType() C.RuleType {
return C.GEOSITE
}
func (gs *GEOSITE) Match(metadata *C.Metadata) bool {
if metadata.AddrType != C.AtypDomainName {
return false
}
domain := metadata.Host
return gs.matcher.ApplyDomain(domain)
}
func (gs *GEOSITE) Adapter() string {
return gs.adapter
}
func (gs *GEOSITE) Payload() string {
return gs.country
}
func (gs *GEOSITE) ShouldResolveIP() bool {
return false
}
func (gs *GEOSITE) RuleExtra() *C.RuleExtra {
return gs.ruleExtra
}
func NewGEOSITE(country string, adapter string, ruleExtra *C.RuleExtra) (*GEOSITE, error) {
geoLoaderName := "standard"
//geoLoaderName := "memconservative"
geoLoader, err := geodata.GetGeoDataLoader(geoLoaderName)
if err != nil {
return nil, fmt.Errorf("[GeoSite] %s", err.Error())
}
domains, err := geoLoader.LoadGeoSite(country)
if err != nil {
return nil, fmt.Errorf("[GeoSite] %s", err.Error())
}
//linear: linear algorithm
//matcher, err := router.NewDomainMatcher(domains)
//mphminimal perfect hash algorithm
matcher, err := router.NewMphMatcherGroup(domains)
if err != nil {
return nil, fmt.Errorf("[GeoSite] %s", err.Error())
}
log.Infoln("Start initial GeoSite rule %s => %s, records: %d", country, adapter, len(domains))
geoSite := &GEOSITE{
country: country,
adapter: adapter,
ruleExtra: ruleExtra,
matcher: matcher,
}
return geoSite, nil
}