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/vless/validator.go

@@ -13,6 +13,9 @@ type Validator interface {
 	Get(id uuid.UUID) *protocol.MemoryUser
 	Add(u *protocol.MemoryUser) error
 	Del(email string) error
+	GetByEmail(email string) *protocol.MemoryUser
+	GetAll() []*protocol.MemoryUser
+	GetCount() int64
 }
 
 // MemoryValidator stores valid VLESS users.
@@ -57,3 +60,32 @@ func (v *MemoryValidator) Get(id uuid.UUID) *protocol.MemoryUser {
 	}
 	return nil
 }
+
+// Get a VLESS user with email, nil if user doesn't exist.
+func (v *MemoryValidator) GetByEmail(email string) *protocol.MemoryUser {
+	u, _ := v.email.Load(email)
+	if u != nil {
+		return u.(*protocol.MemoryUser)
+	}
+	return nil
+}
+
+// Get all users
+func (v *MemoryValidator) 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 *MemoryValidator) GetCount() int64 {
+	var c int64 = 0
+	v.email.Range(func(key, value interface{}) bool {
+		c++
+		return true
+	})
+	return c
+}