package vmess import ( "bytes" "crypto/md5" "github.com/gofrs/uuid" ) // ID cmdKey length const ( IDBytesLen = 16 ) // The ID of en entity, in the form of a UUID. type ID struct { UUID *uuid.UUID CmdKey []byte } // newID returns an ID with given UUID. func newID(uuid *uuid.UUID) *ID { id := &ID{UUID: uuid, CmdKey: make([]byte, IDBytesLen)} md5hash := md5.New() md5hash.Write(uuid.Bytes()) md5hash.Write([]byte("c48619fe-8f02-49e0-b9e9-edf763e17e21")) md5hash.Sum(id.CmdKey[:0]) return id } func nextID(u *uuid.UUID) *uuid.UUID { md5hash := md5.New() md5hash.Write(u.Bytes()) md5hash.Write([]byte("16167dc8-16b6-4e6d-b8bb-65dd68113a81")) var newid uuid.UUID for { md5hash.Sum(newid[:0]) if !bytes.Equal(newid.Bytes(), u.Bytes()) { return &newid } md5hash.Write([]byte("533eff8a-4113-4b10-b5ce-0f5d76b98cd2")) } } func newAlterIDs(primary *ID, alterIDCount uint16) []*ID { alterIDs := make([]*ID, alterIDCount) prevID := primary.UUID for idx := range alterIDs { newid := nextID(prevID) alterIDs[idx] = &ID{UUID: newid, CmdKey: primary.CmdKey[:]} prevID = newid } alterIDs = append(alterIDs, primary) return alterIDs }