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package v2ray
import (
"encoding/json"
"fmt"
"log"
"net/netip"
"os"
"path/filepath"
"slices"
"sort"
"strings"
"github.com/Loyalsoldier/geoip/lib"
"google.golang.org/protobuf/proto"
)
const (
TypeGeoIPDatOut = "v2rayGeoIPDat"
DescGeoIPDatOut = "Convert data to V2Ray GeoIP dat format"
)
var (
defaultOutputName = "geoip.dat"
defaultOutputDir = filepath.Join("./", "output", "dat")
)
func init() {
lib.RegisterOutputConfigCreator(TypeGeoIPDatOut, func(action lib.Action, data json.RawMessage) (lib.OutputConverter, error) {
return newGeoIPDatOut(action, data)
})
lib.RegisterOutputConverter(TypeGeoIPDatOut, &GeoIPDatOut{
Description: DescGeoIPDatOut,
})
}
func newGeoIPDatOut(action lib.Action, data json.RawMessage) (lib.OutputConverter, error) {
var tmp struct {
OutputName string `json:"outputName"`
OutputDir string `json:"outputDir"`
Want []string `json:"wantedList"`
Exclude []string `json:"excludedList"`
OneFilePerList bool `json:"oneFilePerList"`
OnlyIPType lib.IPType `json:"onlyIPType"`
}
if len(data) > 0 {
if err := json.Unmarshal(data, &tmp); err != nil {
return nil, err
}
}
if tmp.OutputName == "" {
tmp.OutputName = defaultOutputName
}
if tmp.OutputDir == "" {
tmp.OutputDir = defaultOutputDir
}
return &GeoIPDatOut{
Type: TypeGeoIPDatOut,
Action: action,
Description: DescGeoIPDatOut,
OutputName: tmp.OutputName,
OutputDir: tmp.OutputDir,
Want: tmp.Want,
Exclude: tmp.Exclude,
OneFilePerList: tmp.OneFilePerList,
OnlyIPType: tmp.OnlyIPType,
}, nil
}
type GeoIPDatOut struct {
Type string
Action lib.Action
Description string
OutputName string
OutputDir string
Want []string
Exclude []string
OneFilePerList bool
OnlyIPType lib.IPType
}
func (g *GeoIPDatOut) GetType() string {
return g.Type
}
func (g *GeoIPDatOut) GetAction() lib.Action {
return g.Action
}
func (g *GeoIPDatOut) GetDescription() string {
return g.Description
}
func (g *GeoIPDatOut) Output(container lib.Container) error {
geoIPList := new(GeoIPList)
geoIPList.Entry = make([]*GeoIP, 0, 300)
updated := false
for _, name := range g.filterAndSortList(container) {
entry, found := container.GetEntry(name)
if !found {
log.Printf("❌ entry %s not found\n", name)
continue
}
geoIP, err := g.generateGeoIP(entry)
if err != nil {
return err
}
geoIPList.Entry = append(geoIPList.Entry, geoIP)
updated = true
if g.OneFilePerList {
geoIPBytes, err := proto.Marshal(geoIPList)
if err != nil {
return err
}
filename := strings.ToLower(entry.GetName()) + ".dat"
if err := g.writeFile(filename, geoIPBytes); err != nil {
return err
}
geoIPList.Entry = nil
}
}
if !g.OneFilePerList && updated {
// Sort to make reproducible builds
g.sort(geoIPList)
geoIPBytes, err := proto.Marshal(geoIPList)
if err != nil {
return err
}
if err := g.writeFile(g.OutputName, geoIPBytes); err != nil {
return err
}
}
return nil
}
func (g *GeoIPDatOut) filterAndSortList(container lib.Container) []string {
excludeMap := make(map[string]bool)
for _, exclude := range g.Exclude {
if exclude = strings.ToUpper(strings.TrimSpace(exclude)); exclude != "" {
excludeMap[exclude] = true
}
}
wantList := make([]string, 0, len(g.Want))
for _, want := range g.Want {
if want = strings.ToUpper(strings.TrimSpace(want)); want != "" && !excludeMap[want] {
wantList = append(wantList, want)
}
}
if len(wantList) > 0 {
// Sort the list
slices.Sort(wantList)
return wantList
}
list := make([]string, 0, 300)
for entry := range container.Loop() {
name := entry.GetName()
if excludeMap[name] {
continue
}
list = append(list, name)
}
// Sort the list
slices.Sort(list)
return list
}
func (g *GeoIPDatOut) generateGeoIP(entry *lib.Entry) (*GeoIP, error) {
var entryCidr []netip.Prefix
var err error
switch g.OnlyIPType {
case lib.IPv4:
entryCidr, err = entry.MarshalPrefix(lib.IgnoreIPv6)
case lib.IPv6:
entryCidr, err = entry.MarshalPrefix(lib.IgnoreIPv4)
default:
entryCidr, err = entry.MarshalPrefix()
}
if err != nil {
return nil, err
}
v2rayCIDR := make([]*CIDR, 0, len(entryCidr))
for _, prefix := range entryCidr {
v2rayCIDR = append(v2rayCIDR, &CIDR{
Ip: prefix.Addr().AsSlice(),
Prefix: uint32(prefix.Bits()),
})
}
if len(v2rayCIDR) > 0 {
return &GeoIP{
CountryCode: entry.GetName(),
Cidr: v2rayCIDR,
}, nil
}
return nil, fmt.Errorf("❌ [type %s | action %s] entry %s has no CIDR", g.Type, g.Action, entry.GetName())
}
// Sort by country code to make reproducible builds
func (g *GeoIPDatOut) sort(list *GeoIPList) {
sort.SliceStable(list.Entry, func(i, j int) bool {
return list.Entry[i].CountryCode < list.Entry[j].CountryCode
})
}
func (g *GeoIPDatOut) writeFile(filename string, geoIPBytes []byte) error {
if err := os.MkdirAll(g.OutputDir, 0755); err != nil {
return err
}
if err := os.WriteFile(filepath.Join(g.OutputDir, filename), geoIPBytes, 0644); err != nil {
return err
}
log.Printf("✅ [%s] %s --> %s", g.Type, filename, g.OutputDir)
return nil
}
|
