From c1c44744fdbd3ddeec509efffba91011a4d49990 Mon Sep 17 00:00:00 2001
From: Jeff Halter <868228+jhalter@users.noreply.github.com>
Date: Sun, 3 Jul 2022 19:11:29 -0700
Subject: Implement handing for "Refuse Private Chat" preference

---
 hotline/transaction_handlers.go | 38 +++++++++++++++++++++++++++++---------
 1 file changed, 29 insertions(+), 9 deletions(-)

(limited to 'hotline/transaction_handlers.go')

diff --git a/hotline/transaction_handlers.go b/hotline/transaction_handlers.go
index afc24ff..2dc5e06 100644
--- a/hotline/transaction_handlers.go
+++ b/hotline/transaction_handlers.go
@@ -1704,15 +1704,35 @@ func HandleInviteNewChat(cc *ClientConn, t *Transaction) (res []Transaction, err
 	targetID := t.GetField(fieldUserID).Data
 	newChatID := cc.Server.NewPrivateChat(cc)
 
-	res = append(res,
-		*NewTransaction(
-			tranInviteToChat,
-			&targetID,
-			NewField(fieldChatID, newChatID),
-			NewField(fieldUserName, cc.UserName),
-			NewField(fieldUserID, *cc.ID),
-		),
-	)
+	// Halcyon does not accept private chats.
+
+	// Check if target user has "Refuse private chat" flag
+	binary.BigEndian.Uint16(targetID)
+	targetClient := cc.Server.Clients[binary.BigEndian.Uint16(targetID)]
+
+	flagBitmap := big.NewInt(int64(binary.BigEndian.Uint16(targetClient.Flags)))
+	if flagBitmap.Bit(userFLagRefusePChat) == 1 {
+		res = append(res,
+			*NewTransaction(
+				tranServerMsg,
+				cc.ID,
+				NewField(fieldData, []byte(string(targetClient.UserName)+" does not accept private messages.")),
+				NewField(fieldUserName, targetClient.UserName),
+				NewField(fieldUserID, *targetClient.ID),
+				NewField(fieldOptions, []byte{0, 2}),
+			),
+		)
+	} else {
+		res = append(res,
+			*NewTransaction(
+				tranInviteToChat,
+				&targetID,
+				NewField(fieldChatID, newChatID),
+				NewField(fieldUserName, cc.UserName),
+				NewField(fieldUserID, *cc.ID),
+			),
+		)
+	}
 
 	res = append(res,
 		cc.NewReply(t,
-- 
cgit