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|
package singbox
import (
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/Loyalsoldier/geoip/lib"
"github.com/sagernet/sing-box/common/srs"
)
const (
TypeSRSIn = "singboxSRS"
DescSRSIn = "Convert sing-box SRS data to other formats"
)
func init() {
lib.RegisterInputConfigCreator(TypeSRSIn, func(action lib.Action, data json.RawMessage) (lib.InputConverter, error) {
return newSRSIn(action, data)
})
lib.RegisterInputConverter(TypeSRSIn, &SRSIn{
Description: DescSRSIn,
})
}
func newSRSIn(action lib.Action, data json.RawMessage) (lib.InputConverter, error) {
var tmp struct {
Name string `json:"name"`
URI string `json:"uri"`
InputDir string `json:"inputDir"`
Want []string `json:"wantedList"`
OnlyIPType lib.IPType `json:"onlyIPType"`
}
if len(data) > 0 {
if err := json.Unmarshal(data, &tmp); err != nil {
return nil, err
}
}
if tmp.Name == "" && tmp.URI == "" && tmp.InputDir == "" {
return nil, fmt.Errorf("❌ [type %s | action %s] missing inputdir or name or uri", TypeSRSIn, action)
}
if (tmp.Name != "" && tmp.URI == "") || (tmp.Name == "" && tmp.URI != "") {
return nil, fmt.Errorf("❌ [type %s | action %s] name & uri must be specified together", TypeSRSIn, action)
}
// Filter want list
wantList := make(map[string]bool)
for _, want := range tmp.Want {
if want = strings.ToUpper(strings.TrimSpace(want)); want != "" {
wantList[want] = true
}
}
return &SRSIn{
Type: TypeSRSIn,
Action: action,
Description: DescSRSIn,
Name: tmp.Name,
URI: tmp.URI,
InputDir: tmp.InputDir,
Want: wantList,
OnlyIPType: tmp.OnlyIPType,
}, nil
}
type SRSIn struct {
Type string
Action lib.Action
Description string
Name string
URI string
InputDir string
Want map[string]bool
OnlyIPType lib.IPType
}
func (s *SRSIn) GetType() string {
return s.Type
}
func (s *SRSIn) GetAction() lib.Action {
return s.Action
}
func (s *SRSIn) GetDescription() string {
return s.Description
}
func (s *SRSIn) Input(container lib.Container) (lib.Container, error) {
entries := make(map[string]*lib.Entry)
var err error
switch {
case s.InputDir != "":
err = s.walkDir(s.InputDir, entries)
case s.Name != "" && s.URI != "":
switch {
case strings.HasPrefix(strings.ToLower(s.URI), "http://"), strings.HasPrefix(strings.ToLower(s.URI), "https://"):
err = s.walkRemoteFile(s.URI, s.Name, entries)
default:
err = s.walkLocalFile(s.URI, s.Name, entries)
}
default:
return nil, fmt.Errorf("❌ [type %s | action %s] config missing argument inputDir or name or uri", s.Type, s.Action)
}
if err != nil {
return nil, err
}
if len(entries) == 0 {
return nil, fmt.Errorf("❌ [type %s | action %s] no entry is generated", s.Type, s.Action)
}
ignoreIPType := lib.GetIgnoreIPType(s.OnlyIPType)
for _, entry := range entries {
switch s.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 (s *SRSIn) walkDir(dir string, entries map[string]*lib.Entry) error {
err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
if err := s.walkLocalFile(path, "", entries); err != nil {
return err
}
return nil
})
return err
}
func (s *SRSIn) walkLocalFile(path, name string, entries map[string]*lib.Entry) error {
entryName := ""
name = strings.TrimSpace(name)
if name != "" {
entryName = name
} else {
entryName = filepath.Base(path)
// check filename
if !regexp.MustCompile(`^[a-zA-Z0-9_.\-]+$`).MatchString(entryName) {
return fmt.Errorf("❌ [type %s | action %s] filename %s cannot be entry name, please remove special characters in it", s.Type, s.Action, entryName)
}
// remove file extension but not hidden files of which filename starts with "."
dotIndex := strings.LastIndex(entryName, ".")
if dotIndex > 0 {
entryName = entryName[:dotIndex]
}
}
entryName = strings.ToUpper(entryName)
if _, found := entries[entryName]; found {
return fmt.Errorf("❌ [type %s | action %s] found duplicated list %s", s.Type, s.Action, entryName)
}
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
if err := s.generateEntries(entryName, file, entries); err != nil {
return err
}
return nil
}
func (s *SRSIn) walkRemoteFile(url, name 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", s.Type, s.Action, url, resp.StatusCode)
}
if err := s.generateEntries(name, resp.Body, entries); err != nil {
return err
}
return nil
}
func (s *SRSIn) generateEntries(name string, reader io.Reader, entries map[string]*lib.Entry) error {
name = strings.ToUpper(name)
if len(s.Want) > 0 && !s.Want[name] {
return nil
}
entry, found := entries[name]
if !found {
entry = lib.NewEntry(name)
}
plainRuleSet, err := srs.Read(reader, true)
if err != nil {
return err
}
for _, rule := range plainRuleSet.Options.Rules {
for _, cidrStr := range rule.DefaultOptions.IPCIDR {
if err := entry.AddPrefix(cidrStr); err != nil {
return err
}
}
}
entries[name] = entry
return nil
}
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