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package v2ray
import (
"encoding/json"
"fmt"
"io"
"log"
"net"
"net/http"
"os"
"strings"
"github.com/Loyalsoldier/geoip/lib"
"google.golang.org/protobuf/proto"
)
const (
TypeGeoIPDatIn = "v2rayGeoIPDat"
DescGeoIPDatIn = "Convert V2Ray GeoIP dat to other formats"
)
func init() {
lib.RegisterInputConfigCreator(TypeGeoIPDatIn, func(action lib.Action, data json.RawMessage) (lib.InputConverter, error) {
return NewGeoIPDatInFromBytes(action, data)
})
lib.RegisterInputConverter(TypeGeoIPDatIn, &geoIPDatIn{
Description: DescGeoIPDatIn,
})
}
type geoIPDatIn struct {
Type string
Action lib.Action
Description string
URI string
Want map[string]bool
OnlyIPType lib.IPType
}
func NewGeoIPDatIn(action lib.Action, opts ...lib.InputOption) lib.InputConverter {
g := &geoIPDatIn{
Type: TypeGeoIPDatIn,
Action: action,
Description: DescGeoIPDatIn,
}
for _, opt := range opts {
if opt != nil {
opt(g)
}
}
return g
}
func WithURI(uri string) lib.InputOption {
return func(g lib.InputConverter) {
uri = strings.TrimSpace(uri)
if uri == "" {
log.Fatalf("❌ [type %s | action %s] uri must be specified", TypeGeoIPDatIn, g.(*geoIPDatIn).Action)
}
g.(*geoIPDatIn).URI = uri
}
}
func WithInputWantedList(lists []string) lib.InputOption {
return func(g lib.InputConverter) {
wantList := make(map[string]bool)
for _, want := range lists {
if want = strings.ToUpper(strings.TrimSpace(want)); want != "" {
wantList[want] = true
}
}
g.(*geoIPDatIn).Want = wantList
}
}
func WithInputOnlyIPType(onlyIPType lib.IPType) lib.InputOption {
return func(g lib.InputConverter) {
g.(*geoIPDatIn).OnlyIPType = onlyIPType
}
}
func NewGeoIPDatInFromBytes(action lib.Action, data []byte) (lib.InputConverter, error) {
var tmp struct {
URI string `json:"uri"`
Want []string `json:"wantedList"`
OnlyIPType lib.IPType `json:"onlyIPType"`
}
if len(data) > 0 {
if err := json.Unmarshal(data, &tmp); err != nil {
return nil, err
}
}
return NewGeoIPDatIn(
action,
WithURI(tmp.URI),
WithInputWantedList(tmp.Want),
WithInputOnlyIPType(tmp.OnlyIPType),
), nil
}
func (g *geoIPDatIn) GetType() string {
return g.Type
}
func (g *geoIPDatIn) GetAction() lib.Action {
return g.Action
}
func (g *geoIPDatIn) GetDescription() string {
return g.Description
}
func (g *geoIPDatIn) Input(container lib.Container) (lib.Container, error) {
entries := make(map[string]*lib.Entry)
var err error
switch {
case strings.HasPrefix(strings.ToLower(g.URI), "http://"), strings.HasPrefix(strings.ToLower(g.URI), "https://"):
err = g.walkRemoteFile(g.URI, entries)
default:
err = g.walkLocalFile(g.URI, entries)
}
if err != nil {
return nil, err
}
if len(entries) == 0 {
return nil, fmt.Errorf("❌ [type %s | action %s] no entry is generated", g.Type, g.Action)
}
ignoreIPType := lib.GetIgnoreIPType(g.OnlyIPType)
for _, entry := range entries {
switch g.Action {
case lib.ActionAdd:
if err := container.Add(entry, ignoreIPType); err != nil {
return nil, err
}
case lib.ActionRemove:
if err := container.Remove(entry, lib.CaseRemovePrefix, ignoreIPType); err != nil {
return nil, err
}
default:
return nil, lib.ErrUnknownAction
}
}
return container, nil
}
func (g *geoIPDatIn) walkLocalFile(path string, entries map[string]*lib.Entry) error {
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
if err := g.generateEntries(file, entries); err != nil {
return err
}
return nil
}
func (g *geoIPDatIn) walkRemoteFile(url string, entries map[string]*lib.Entry) error {
resp, err := http.Get(url)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return fmt.Errorf("❌ [type %s | action %s] failed to get remote file %s, http status code %d", g.Type, g.Action, url, resp.StatusCode)
}
if err := g.generateEntries(resp.Body, entries); err != nil {
return err
}
return nil
}
func (g *geoIPDatIn) generateEntries(reader io.Reader, entries map[string]*lib.Entry) error {
geoipBytes, err := io.ReadAll(reader)
if err != nil {
return err
}
var geoipList GeoIPList
if err := proto.Unmarshal(geoipBytes, &geoipList); err != nil {
return err
}
for _, geoip := range geoipList.Entry {
name := strings.ToUpper(strings.TrimSpace(geoip.CountryCode))
if len(g.Want) > 0 && !g.Want[name] {
continue
}
entry, found := entries[name]
if !found {
entry = lib.NewEntry(name)
}
for _, v2rayCIDR := range geoip.Cidr {
ipStr := net.IP(v2rayCIDR.GetIp()).String() + "/" + fmt.Sprint(v2rayCIDR.GetPrefix())
if err := entry.AddPrefix(ipStr); err != nil {
return err
}
}
entries[name] = entry
}
return nil
}
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