/
cache.go
141 lines (118 loc) · 3.28 KB
/
cache.go
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package memconservative
import (
"os"
"strings"
"google.golang.org/protobuf/proto"
"github.com/v2fly/v2ray-core/v4/app/router"
"github.com/v2fly/v2ray-core/v4/common/platform"
)
type GeoIPCache map[string]*router.GeoIP
func (g GeoIPCache) Has(key string) bool {
return !(g.Get(key) == nil)
}
func (g GeoIPCache) Get(key string) *router.GeoIP {
if g == nil {
return nil
}
return g[key]
}
func (g GeoIPCache) Set(key string, value *router.GeoIP) {
if g == nil {
g = make(map[string]*router.GeoIP)
}
g[key] = value
}
func (g GeoIPCache) Unmarshal(filename, code string) (*router.GeoIP, error) {
asset := platform.GetAssetLocation(filename)
idx := strings.ToLower(asset + ":" + code)
if g.Has(idx) {
return g.Get(idx), nil
}
geoipBytes, err := Decode(asset, code)
switch err {
case nil:
var geoip router.GeoIP
if err := proto.Unmarshal(geoipBytes, &geoip); err != nil {
return nil, err
}
g.Set(idx, &geoip)
return &geoip, nil
case errCodeNotFound:
return nil, newError("country code ", code, " not found in ", filename)
case errFailedToReadBytes, errFailedToReadExpectedLenBytes,
errInvalidGeodataFile, errInvalidGeodataVarintLength:
newError("failed to decode geoip file: ", filename, ", fallback to the original ReadFile method")
geoipBytes, err = os.ReadFile(asset)
if err != nil {
return nil, err
}
var geoipList router.GeoIPList
if err := proto.Unmarshal(geoipBytes, &geoipList); err != nil {
return nil, err
}
for _, geoip := range geoipList.GetEntry() {
if strings.EqualFold(code, geoip.GetCountryCode()) {
g.Set(idx, geoip)
return geoip, nil
}
}
default:
return nil, err
}
return nil, newError("country code ", code, " not found in ", filename)
}
type GeoSiteCache map[string]*router.GeoSite
func (g GeoSiteCache) Has(key string) bool {
return !(g.Get(key) == nil)
}
func (g GeoSiteCache) Get(key string) *router.GeoSite {
if g == nil {
return nil
}
return g[key]
}
func (g GeoSiteCache) Set(key string, value *router.GeoSite) {
if g == nil {
g = make(map[string]*router.GeoSite)
}
g[key] = value
}
func (g GeoSiteCache) Unmarshal(filename, code string) (*router.GeoSite, error) {
asset := platform.GetAssetLocation(filename)
idx := strings.ToLower(asset + ":" + code)
if g.Has(idx) {
return g.Get(idx), nil
}
geositeBytes, err := Decode(asset, code)
switch err {
case nil:
var geosite router.GeoSite
if err := proto.Unmarshal(geositeBytes, &geosite); err != nil {
return nil, err
}
g.Set(idx, &geosite)
return &geosite, nil
case errCodeNotFound:
return nil, newError("list ", code, " not found in ", filename)
case errFailedToReadBytes, errFailedToReadExpectedLenBytes,
errInvalidGeodataFile, errInvalidGeodataVarintLength:
newError("failed to decode geoip file: ", filename, ", fallback to the original ReadFile method")
geositeBytes, err = os.ReadFile(asset)
if err != nil {
return nil, err
}
var geositeList router.GeoSiteList
if err := proto.Unmarshal(geositeBytes, &geositeList); err != nil {
return nil, err
}
for _, geosite := range geositeList.GetEntry() {
if strings.EqualFold(code, geosite.GetCountryCode()) {
g.Set(idx, geosite)
return geosite, nil
}
}
default:
return nil, err
}
return nil, newError("list ", code, " not found in ", filename)
}