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/trojan/config.go

@@ -3,7 +3,8 @@ package trojan
 import (
 	"crypto/sha256"
 	"encoding/hex"
-	fmt "fmt"
+	"fmt"
+	"google.golang.org/protobuf/proto"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/protocol"
@@ -33,6 +34,12 @@ func (a *MemoryAccount) Equals(another protocol.Account) bool {
 	return false
 }
 
+func (a *MemoryAccount) ToProto() proto.Message {
+	return &Account{
+		Password: a.Password,
+	}
+}
+
 func hexSha224(password string) []byte {
 	buf := make([]byte, 56)
 	hash := sha256.New224()

proxy/trojan/server.go

@@ -125,6 +125,21 @@ 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()
+}
+
 // Network implements proxy.Inbound.Network().
 func (s *Server) Network() []net.Network {
 	return []net.Network{net.Network_TCP, net.Network_UNIX}

proxy/trojan/validator.go

@@ -50,3 +50,33 @@ func (v *Validator) Get(hash string) *protocol.MemoryUser {
 	}
 	return nil
 }
+
+
+// Get a trojan user with hashed key, nil if user doesn't exist.
+func (v *Validator) GetByEmail(email string) *protocol.MemoryUser {
+	u, _ := v.email.Load(email)
+	if u != nil {
+		return u.(*protocol.MemoryUser)
+	}
+	return nil
+}
+
+// Get all users
+func (v *Validator) GetAll() []*protocol.MemoryUser {
+	var u = make([]*protocol.MemoryUser, 0, 100)
+	v.email.Range(func(key, value interface{}) bool {
+		u = append(u, value.(*protocol.MemoryUser))
+		return true
+	})
+	return u
+}
+
+// Get users count
+func (v *Validator) GetCount() int64 {
+	var c int64 = 0
+	v.email.Range(func(key, value interface{}) bool {
+		c++
+		return true
+	})
+	return c
+}