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/vmess/account.go

@@ -1,6 +1,7 @@
 package vmess
 
 import (
+	"google.golang.org/protobuf/proto"
 	"strings"
 
 	"github.com/xtls/xray-core/common/errors"
@@ -28,6 +29,21 @@ func (a *MemoryAccount) Equals(account protocol.Account) bool {
 	return a.ID.Equals(vmessAccount.ID)
 }
 
+func (a *MemoryAccount) ToProto() proto.Message {
+	var test = ""
+	if a.AuthenticatedLengthExperiment {
+		test = "AuthenticatedLength|"
+	}
+	if a.NoTerminationSignal {
+		test = test + "NoTerminationSignal"
+	}
+	return &Account{
+		Id: a.ID.String(),
+		TestsEnabled: test,
+		SecuritySettings: &protocol.SecurityConfig{Type: a.Security},
+	}
+}
+
 // AsAccount implements protocol.Account.
 func (a *Account) AsAccount() (protocol.Account, error) {
 	id, err := uuid.ParseString(a.Id)

proxy/vmess/inbound/inbound.go

@@ -56,7 +56,7 @@ func (v *userByEmail) Add(u *protocol.MemoryUser) bool {
 	return v.addNoLock(u)
 }
 
-func (v *userByEmail) Get(email string) (*protocol.MemoryUser, bool) {
+func (v *userByEmail) GetOrGenerate(email string) (*protocol.MemoryUser, bool) {
 	email = strings.ToLower(email)
 
 	v.Lock()
@@ -80,6 +80,13 @@ func (v *userByEmail) Get(email string) (*protocol.MemoryUser, bool) {
 	return user, found
 }
 
+func (v *userByEmail) Get(email string) *protocol.MemoryUser {
+	email = strings.ToLower(email)
+	v.Lock()
+	defer v.Unlock()
+	return v.cache[email]
+}
+
 func (v *userByEmail) Remove(email string) bool {
 	email = strings.ToLower(email)
 
@@ -141,14 +148,26 @@ func (*Handler) Network() []net.Network {
 	return []net.Network{net.Network_TCP, net.Network_UNIX}
 }
 
-func (h *Handler) GetUser(email string) *protocol.MemoryUser {
-	user, existing := h.usersByEmail.Get(email)
+func (h *Handler) GetOrGenerateUser(email string) *protocol.MemoryUser {
+	user, existing := h.usersByEmail.GetOrGenerate(email)
 	if !existing {
 		h.clients.Add(user)
 	}
 	return user
 }
 
+func (h *Handler) GetUser(ctx context.Context, email string) *protocol.MemoryUser {
+	return h.usersByEmail.Get(email)
+}
+
+func (h *Handler) GetUsers(ctx context.Context) []*protocol.MemoryUser {
+	return h.clients.GetUsers()
+}
+
+func (h *Handler) GetUsersCount(context.Context) int64 {
+	return h.clients.GetCount()
+}
+
 func (h *Handler) AddUser(ctx context.Context, user *protocol.MemoryUser) error {
 	if len(user.Email) > 0 && !h.usersByEmail.Add(user) {
 		return errors.New("User ", user.Email, " already exists.")
@@ -321,7 +340,7 @@ func (h *Handler) generateCommand(ctx context.Context, request *protocol.Request
 				}
 
 				errors.LogDebug(ctx, "pick detour handler for port ", port, " for ", availableMin, " minutes.")
-				user := inboundHandler.GetUser(request.User.Email)
+				user := inboundHandler.GetOrGenerateUser(request.User.Email)
 				if user == nil {
 					return nil
 				}

proxy/vmess/validator.go

@@ -56,6 +56,20 @@ func (v *TimedUserValidator) Add(u *protocol.MemoryUser) error {
 	return nil
 }
 
+func (v *TimedUserValidator) GetUsers() []*protocol.MemoryUser {
+	v.Lock()
+	defer v.Unlock()
+	dst := make([]*protocol.MemoryUser, len(v.users))
+	copy(dst, v.users)
+	return dst
+}
+
+func (v *TimedUserValidator) GetCount() int64 {
+	v.Lock()
+	defer v.Unlock()
+	return int64(len(v.users))
+}
+
 func (v *TimedUserValidator) GetAEAD(userHash []byte) (*protocol.MemoryUser, bool, error) {
 	v.RLock()
 	defer v.RUnlock()