Add WhatsApp<->Matrix redaction bridging

whatsapp-ext/protomessage.go

@@ -0,0 +1,54 @@
+// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
+// Copyright (C) 2019 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package whatsappExt
+
+import (
+	"github.com/Rhymen/go-whatsapp"
+	"github.com/Rhymen/go-whatsapp/binary/proto"
+)
+
+type MessageRevokeHandler interface {
+	whatsapp.Handler
+	HandleMessageRevoke(key MessageRevocation)
+}
+
+type MessageRevocation struct {
+	Id          string
+	RemoteJid   string
+	FromMe      bool
+	Participant string
+}
+
+func (ext *ExtendedConn) HandleRawMessage(message *proto.WebMessageInfo) {
+	protoMsg := message.GetMessage().GetProtocolMessage()
+	if protoMsg.GetType() == proto.ProtocolMessage_REVOKE {
+		key := protoMsg.GetKey()
+		deletedMessage := MessageRevocation{
+			Id: key.GetId(),
+			RemoteJid: key.GetRemoteJid(),
+			FromMe: key.GetFromMe(),
+			Participant: key.GetParticipant(),
+		}
+		for _, handler := range ext.handlers {
+			mrHandler, ok := handler.(MessageRevokeHandler)
+			if !ok {
+				continue
+			}
+			mrHandler.HandleMessageRevoke(deletedMessage)
+		}
+	}
+}