fix key pair checking bug

bot/client.go

@@ -11,7 +11,7 @@ import (
 type Client struct {
 	Conn    *net.Conn
 	Auth    Auth
-	KeyPair user.KeyPairResp
+	KeyPair *user.KeyPairResp
 
 	Name string
 	UUID uuid.UUID

bot/login.go

@@ -47,7 +47,7 @@ func handleEncryptionRequest(c *Client, p pk.Packet) error {
 
 	// 响应加密请求
 	// Write Encryption Key Response
-	p, err = genEncryptionKeyResponse(key, er.PublicKey, er.VerifyToken, &c.KeyPair)
+	p, err = genEncryptionKeyResponse(key, er.PublicKey, er.VerifyToken, c.KeyPair)
 	if err != nil {
 		return fmt.Errorf("gen encryption key response fail: %v", err)
 	}

bot/mcbot.go

@@ -75,10 +75,13 @@ func (c *Client) join(ctx context.Context, d *mcnet.Dialer, addr string) error {
 		return LoginErr{"handshake", err}
 	}
 	// Login Start
-	c.KeyPair, err = user.GetOrFetchKeyPair(c.Auth.AsTk)
-	KeyPair := pk.OptionEncoder[user.KeyPairResp]{
+	KeyPairResp, err := user.GetOrFetchKeyPair(c.Auth.AsTk)
+	if err == nil {
+		c.KeyPair = &KeyPairResp
+	}
+	KeyPair := pk.OptionEncoder[*user.KeyPairResp]{
 		Has: err == nil,
-		Val: c.KeyPair,
+		Val: &KeyPairResp,
 	}
 	c.UUID, err = uuid.Parse(c.Auth.UUID)
 	PlayerUUID := pk.Option[pk.UUID, *pk.UUID]{