96 lines
1.8 KiB
Go
96 lines
1.8 KiB
Go
package mmdb
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import (
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"context"
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"io"
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"net/http"
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"os"
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"sync"
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"time"
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clashHttp "github.com/Dreamacro/clash/component/http"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/log"
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"github.com/oschwald/maxminddb-golang"
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)
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type databaseType = uint8
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const (
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typeMaxmind databaseType = iota
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typeSing
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typeMetaV0
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)
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var (
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reader Reader
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once sync.Once
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)
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func LoadFromBytes(buffer []byte) {
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once.Do(func() {
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mmdb, err := maxminddb.FromBytes(buffer)
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if err != nil {
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log.Fatalln("Can't load mmdb: %s", err.Error())
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}
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reader = Reader{Reader: mmdb}
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switch mmdb.Metadata.DatabaseType {
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case "sing-geoip":
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reader.databaseType = typeSing
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case "Meta-geoip0":
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reader.databaseType = typeMetaV0
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default:
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reader.databaseType = typeMaxmind
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}
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})
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}
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func Verify() bool {
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instance, err := maxminddb.Open(C.Path.MMDB())
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if err == nil {
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instance.Close()
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}
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return err == nil
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}
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func Instance() Reader {
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once.Do(func() {
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mmdbPath := C.Path.MMDB()
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log.Debugln("Load MMDB file: %s", mmdbPath)
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mmdb, err := maxminddb.Open(mmdbPath)
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if err != nil {
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log.Fatalln("Can't load MMDB: %s", err.Error())
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}
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reader = Reader{Reader: mmdb}
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switch mmdb.Metadata.DatabaseType {
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case "sing-geoip":
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reader.databaseType = typeSing
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case "Meta-geoip0":
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reader.databaseType = typeMetaV0
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default:
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reader.databaseType = typeMaxmind
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}
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})
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return reader
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}
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func DownloadMMDB(path string) (err error) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*90)
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defer cancel()
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resp, err := clashHttp.HttpRequest(ctx, C.MmdbUrl, http.MethodGet, http.Header{"User-Agent": {"clash"}}, nil)
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if err != nil {
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return
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}
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defer resp.Body.Close()
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f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0o644)
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if err != nil {
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return err
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}
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defer f.Close()
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_, err = io.Copy(f, resp.Body)
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return err
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}
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