mihomo/rule/common/geosite.go
2022-05-30 21:26:41 +08:00

124 lines
2.7 KiB
Go

package common
import (
"fmt"
"io"
"net/http"
"os"
"github.com/Dreamacro/clash/component/geodata"
"github.com/Dreamacro/clash/component/geodata/router"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
_ "github.com/Dreamacro/clash/component/geodata/memconservative"
_ "github.com/Dreamacro/clash/component/geodata/standard"
)
type GEOSITE struct {
*Base
country string
adapter string
matcher *router.DomainMatcher
recodeSize int
}
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) GetDomainMatcher() *router.DomainMatcher {
return gs.matcher
}
func (gs *GEOSITE) GetRecodeSize() int {
return gs.recodeSize
}
func NewGEOSITE(country string, adapter string) (*GEOSITE, error) {
if !initFlag {
if err := initGeoSite(); err != nil {
log.Errorln("can't initial GeoSite: %s", err)
return nil, err
}
initFlag = true
}
matcher, size, err := geodata.LoadGeoSiteMatcher(country)
if err != nil {
return nil, fmt.Errorf("load GeoSite data error, %s", err.Error())
}
log.Infoln("Start initial GeoSite rule %s => %s, records: %d", country, adapter, size)
geoSite := &GEOSITE{
Base: &Base{},
country: country,
adapter: adapter,
matcher: matcher,
recodeSize: size,
}
return geoSite, nil
}
var _ C.Rule = (*GEOSITE)(nil)
func downloadGeoSite(path string) (err error) {
resp, err := http.Get(C.GeoSiteUrl)
if err != nil {
return
}
defer resp.Body.Close()
f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0o644)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, resp.Body)
return err
}
func initGeoSite() error {
if _, err := os.Stat(C.Path.GeoSite()); os.IsNotExist(err) {
log.Infoln("Can't find GeoSite.dat, start download")
if err := downloadGeoSite(C.Path.GeoSite()); err != nil {
return fmt.Errorf("can't download GeoSite.dat: %s", err.Error())
}
log.Infoln("Download GeoSite.dat finish")
}
if !initFlag {
err := geodata.Verify(C.GeositeName)
if err != nil {
log.Warnln("GeoSite.dat invalid, remove and download: %s", err)
if err := os.Remove(C.Path.GeoSite()); err != nil {
return fmt.Errorf("can't remove invalid GeoSite.dat: %s", err.Error())
}
if err := downloadGeoSite(C.Path.GeoSite()); err != nil {
return fmt.Errorf("can't download GeoSite.dat: %s", err.Error())
}
} else {
initFlag = true
}
}
return nil
}