Send alerts about incoming calls

whatsapp-ext/call.go

@@ -0,0 +1,72 @@
+// 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 (
+	"encoding/json"
+	"strings"
+
+	"github.com/Rhymen/go-whatsapp"
+)
+
+type CallInfoType string
+
+const (
+	CallOffer        CallInfoType = "offer"
+	CallOfferVideo   CallInfoType = "offer_video"
+	CallTransport    CallInfoType = "transport"
+	CallRelayLatency CallInfoType = "relaylatency"
+	CallTerminate    CallInfoType = "terminate"
+)
+
+type CallInfo struct {
+	ID   string       `json:"id"`
+	Type CallInfoType `json:"type"`
+	From string       `json:"from"`
+
+	Platform string `json:"platform"`
+	Version  []int  `json:"version"`
+
+	Data [][]interface{} `json:"data"`
+}
+
+type CallInfoHandler interface {
+	whatsapp.Handler
+	HandleCallInfo(CallInfo)
+}
+
+func (ext *ExtendedConn) handleMessageCall(message []byte) {
+	var event CallInfo
+	err := json.Unmarshal(message, &event)
+	if err != nil {
+		ext.jsonParseError(err)
+		return
+	}
+	event.From = strings.Replace(event.From, OldUserSuffix, NewUserSuffix, 1)
+	for _, handler := range ext.handlers {
+		callInfoHandler, ok := handler.(CallInfoHandler)
+		if !ok {
+			continue
+		}
+
+		if ext.shouldCallSynchronously(callInfoHandler) {
+			callInfoHandler.HandleCallInfo(event)
+		} else {
+			go callInfoHandler.HandleCallInfo(event)
+		}
+	}
+}