API: Add new Get Inbound User (#3644)

* Add GetInboundUser in proto

* Add get user logic for all existing inbounds

* Add inbounduser command

* Add option to get all users

* Fix shadowsocks2022 config

* Fix init users in shadowsocks2022

* Fix copy

* Add inbound user count command

This api costs much less than get inbound user, could be useful in some case

* Update from latest main

proxy/shadowsocks/config.go

@@ -6,6 +6,7 @@ import (
 	"crypto/cipher"
 	"crypto/md5"
 	"crypto/sha1"
+	"google.golang.org/protobuf/proto"
 	"io"
 
 	"github.com/xtls/xray-core/common"
@@ -20,8 +21,10 @@ import (
 
 // MemoryAccount is an account type converted from Account.
 type MemoryAccount struct {
-	Cipher Cipher
-	Key    []byte
+	Cipher     Cipher
+	CipherType CipherType 
+	Key        []byte
+	Password   string
 
 	replayFilter antireplay.GeneralizedReplayFilter
 }
@@ -36,6 +39,14 @@ func (a *MemoryAccount) Equals(another protocol.Account) bool {
 	return false
 }
 
+func (a *MemoryAccount) ToProto() proto.Message {
+	return &Account{
+		CipherType: a.CipherType,
+		Password: a.Password,
+		IvCheck: a.replayFilter != nil,
+	}
+}
+
 func (a *MemoryAccount) CheckIV(iv []byte) error {
 	if a.replayFilter == nil {
 		return nil
@@ -107,7 +118,9 @@ func (a *Account) AsAccount() (protocol.Account, error) {
 	}
 	return &MemoryAccount{
 		Cipher: Cipher,
+		CipherType: a.CipherType,
 		Key:    passwordToCipherKey([]byte(a.Password), Cipher.KeySize()),
+		Password: a.Password,
 		replayFilter: func() antireplay.GeneralizedReplayFilter {
 			if a.IvCheck {
 				return antireplay.NewBloomRing()

proxy/shadowsocks/server.go

@@ -63,6 +63,21 @@ func (s *Server) RemoveUser(ctx context.Context, e string) error {
 	return s.validator.Del(e)
 }
 
+// GetUser implements proxy.UserManager.GetUser().
+func (s *Server) GetUser(ctx context.Context, email string) *protocol.MemoryUser {
+	return s.validator.GetByEmail(email)
+}
+
+// GetUsers implements proxy.UserManager.GetUsers().
+func (s *Server) GetUsers(ctx context.Context) []*protocol.MemoryUser {
+	return s.validator.GetAll()
+}
+
+// GetUsersCount implements proxy.UserManager.GetUsersCount().
+func (s *Server) GetUsersCount(context.Context) int64 {
+	return s.validator.GetCount()
+}
+
 func (s *Server) Network() []net.Network {
 	list := s.config.Network
 	if len(list) == 0 {

proxy/shadowsocks/validator.go

@@ -74,6 +74,40 @@ func (v *Validator) Del(email string) error {
 	return nil
 }
 
+// GetByEmail Get a Shadowsocks user with a non-empty Email.
+func (v *Validator) GetByEmail(email string) *protocol.MemoryUser {
+	if email == "" {
+		return nil
+	}
+
+	v.Lock()
+	defer v.Unlock()
+
+	email = strings.ToLower(email)
+	for _, u := range v.users {
+		if strings.EqualFold(u.Email, email) {
+			return u
+		}
+	}
+	return nil
+}
+
+// GetAll get all users
+func (v *Validator) GetAll() []*protocol.MemoryUser {
+	v.Lock()
+	defer v.Unlock()
+	dst := make([]*protocol.MemoryUser, len(v.users))
+	copy(dst, v.users)
+	return dst
+}
+
+// GetCount get users count
+func (v *Validator) GetCount() int64 {
+	v.Lock()
+	defer v.Unlock()
+	return int64(len(v.users))
+}
+
 // Get a Shadowsocks user.
 func (v *Validator) Get(bs []byte, command protocol.RequestCommand) (u *protocol.MemoryUser, aead cipher.AEAD, ret []byte, ivLen int32, err error) {
 	v.RLock()