// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2021 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 .
package main
import (
"bytes"
"context"
"encoding/gob"
"errors"
"fmt"
"html"
"image"
_ "image/gif"
"image/jpeg"
"image/png"
"math"
"mime"
"net/http"
"strconv"
"strings"
"sync"
"time"
"golang.org/x/image/draw"
"golang.org/x/image/webp"
"google.golang.org/protobuf/proto"
log "maunium.net/go/maulogger/v2"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/appservice"
"maunium.net/go/mautrix/crypto/attachment"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/format"
"maunium.net/go/mautrix/id"
"maunium.net/go/mautrix/util"
"maunium.net/go/mautrix/util/ffmpeg"
"go.mau.fi/whatsmeow"
waProto "go.mau.fi/whatsmeow/binary/proto"
"go.mau.fi/whatsmeow/types"
"go.mau.fi/whatsmeow/types/events"
"maunium.net/go/mautrix-whatsapp/database"
)
const StatusBroadcastTopic = "WhatsApp status updates from your contacts"
const StatusBroadcastName = "WhatsApp Status Broadcast"
const BroadcastTopic = "WhatsApp broadcast list"
const UnnamedBroadcastName = "Unnamed broadcast list"
const PrivateChatTopic = "WhatsApp private chat"
var ErrStatusBroadcastDisabled = errors.New("status bridging is disabled")
func (bridge *Bridge) GetPortalByMXID(mxid id.RoomID) *Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
portal, ok := bridge.portalsByMXID[mxid]
if !ok {
return bridge.loadDBPortal(bridge.DB.Portal.GetByMXID(mxid), nil)
}
return portal
}
func (bridge *Bridge) GetPortalByJID(key database.PortalKey) *Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
portal, ok := bridge.portalsByJID[key]
if !ok {
return bridge.loadDBPortal(bridge.DB.Portal.GetByJID(key), &key)
}
return portal
}
func (bridge *Bridge) GetAllPortals() []*Portal {
return bridge.dbPortalsToPortals(bridge.DB.Portal.GetAll())
}
func (bridge *Bridge) GetAllPortalsByJID(jid types.JID) []*Portal {
return bridge.dbPortalsToPortals(bridge.DB.Portal.GetAllByJID(jid))
}
func (bridge *Bridge) dbPortalsToPortals(dbPortals []*database.Portal) []*Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
output := make([]*Portal, len(dbPortals))
for index, dbPortal := range dbPortals {
if dbPortal == nil {
continue
}
portal, ok := bridge.portalsByJID[dbPortal.Key]
if !ok {
portal = bridge.loadDBPortal(dbPortal, nil)
}
output[index] = portal
}
return output
}
func (bridge *Bridge) loadDBPortal(dbPortal *database.Portal, key *database.PortalKey) *Portal {
if dbPortal == nil {
if key == nil {
return nil
}
dbPortal = bridge.DB.Portal.New()
dbPortal.Key = *key
dbPortal.Insert()
}
portal := bridge.NewPortal(dbPortal)
bridge.portalsByJID[portal.Key] = portal
if len(portal.MXID) > 0 {
bridge.portalsByMXID[portal.MXID] = portal
}
return portal
}
func (portal *Portal) GetUsers() []*User {
return nil
}
func (bridge *Bridge) NewManualPortal(key database.PortalKey) *Portal {
portal := &Portal{
Portal: bridge.DB.Portal.New(),
bridge: bridge,
log: bridge.Log.Sub(fmt.Sprintf("Portal/%s", key)),
messages: make(chan PortalMessage, bridge.Config.Bridge.PortalMessageBuffer),
matrixMessages: make(chan PortalMatrixMessage, bridge.Config.Bridge.PortalMessageBuffer),
}
portal.Key = key
go portal.handleMessageLoop()
return portal
}
func (bridge *Bridge) NewPortal(dbPortal *database.Portal) *Portal {
portal := &Portal{
Portal: dbPortal,
bridge: bridge,
log: bridge.Log.Sub(fmt.Sprintf("Portal/%s", dbPortal.Key)),
messages: make(chan PortalMessage, bridge.Config.Bridge.PortalMessageBuffer),
matrixMessages: make(chan PortalMatrixMessage, bridge.Config.Bridge.PortalMessageBuffer),
}
go portal.handleMessageLoop()
return portal
}
const recentlyHandledLength = 100
type fakeMessage struct {
Sender types.JID
Text string
ID string
Time time.Time
Important bool
}
type PortalMessage struct {
evt *events.Message
undecryptable *events.UndecryptableMessage
fake *fakeMessage
source *User
}
type PortalMatrixMessage struct {
evt *event.Event
user *User
}
type recentlyHandledWrapper struct {
id types.MessageID
err bool
}
type Portal struct {
*database.Portal
bridge *Bridge
log log.Logger
roomCreateLock sync.Mutex
encryptLock sync.Mutex
backfillLock sync.Mutex
recentlyHandled [recentlyHandledLength]recentlyHandledWrapper
recentlyHandledLock sync.Mutex
recentlyHandledIndex uint8
privateChatBackfillInvitePuppet func()
currentlyTyping []id.UserID
currentlyTypingLock sync.Mutex
messages chan PortalMessage
matrixMessages chan PortalMatrixMessage
relayUser *User
}
func (portal *Portal) handleMessageLoopItem(msg PortalMessage) {
if len(portal.MXID) == 0 {
if msg.fake == nil && msg.undecryptable == nil && (msg.evt == nil || !containsSupportedMessage(msg.evt.Message)) {
portal.log.Debugln("Not creating portal room for incoming message: message is not a chat message")
return
}
portal.log.Debugln("Creating Matrix room from incoming message")
err := portal.CreateMatrixRoom(msg.source, nil, false)
if err != nil {
portal.log.Errorln("Failed to create portal room:", err)
return
}
}
if msg.evt != nil {
portal.handleMessage(msg.source, msg.evt)
} else if msg.undecryptable != nil {
portal.handleUndecryptableMessage(msg.source, msg.undecryptable)
} else if msg.fake != nil {
msg.fake.ID = "FAKE::" + msg.fake.ID
portal.handleFakeMessage(*msg.fake)
} else {
portal.log.Warnln("Unexpected PortalMessage with no message: %+v", msg)
}
}
func (portal *Portal) handleMatrixMessageLoopItem(msg PortalMatrixMessage) {
portal.HandleMatrixReadReceipt(msg.user, "", time.UnixMilli(msg.evt.Timestamp), false)
switch msg.evt.Type {
case event.EventMessage, event.EventSticker:
portal.HandleMatrixMessage(msg.user, msg.evt)
case event.EventRedaction:
portal.HandleMatrixRedaction(msg.user, msg.evt)
default:
portal.log.Warnln("Unsupported event type %+v in portal message channel", msg.evt.Type)
}
}
func (portal *Portal) handleMessageLoop() {
for {
select {
case msg := <-portal.messages:
portal.handleMessageLoopItem(msg)
case msg := <-portal.matrixMessages:
portal.handleMatrixMessageLoopItem(msg)
}
}
}
func containsSupportedMessage(waMsg *waProto.Message) bool {
if waMsg == nil {
return false
}
return waMsg.Conversation != nil || waMsg.ExtendedTextMessage != nil || waMsg.ImageMessage != nil ||
waMsg.StickerMessage != nil || waMsg.AudioMessage != nil || waMsg.VideoMessage != nil ||
waMsg.DocumentMessage != nil || waMsg.ContactMessage != nil || waMsg.LocationMessage != nil ||
waMsg.LiveLocationMessage != nil || waMsg.GroupInviteMessage != nil || waMsg.ContactsArrayMessage != nil
}
func getMessageType(waMsg *waProto.Message) string {
switch {
case waMsg == nil:
return "ignore"
case waMsg.Conversation != nil, waMsg.ExtendedTextMessage != nil:
return "text"
case waMsg.ImageMessage != nil:
return fmt.Sprintf("image %s", waMsg.GetImageMessage().GetMimetype())
case waMsg.StickerMessage != nil:
return fmt.Sprintf("sticker %s", waMsg.GetStickerMessage().GetMimetype())
case waMsg.VideoMessage != nil:
return fmt.Sprintf("video %s", waMsg.GetVideoMessage().GetMimetype())
case waMsg.AudioMessage != nil:
return fmt.Sprintf("audio %s", waMsg.GetAudioMessage().GetMimetype())
case waMsg.DocumentMessage != nil:
return fmt.Sprintf("document %s", waMsg.GetDocumentMessage().GetMimetype())
case waMsg.ContactMessage != nil:
return "contact"
case waMsg.ContactsArrayMessage != nil:
return "contact array"
case waMsg.LocationMessage != nil:
return "location"
case waMsg.LiveLocationMessage != nil:
return "live location start"
case waMsg.GroupInviteMessage != nil:
return "group invite"
case waMsg.ReactionMessage != nil:
return "reaction"
case waMsg.ProtocolMessage != nil:
switch waMsg.GetProtocolMessage().GetType() {
case waProto.ProtocolMessage_REVOKE:
return "revoke"
case waProto.ProtocolMessage_EPHEMERAL_SETTING:
return "disappearing timer change"
case waProto.ProtocolMessage_APP_STATE_SYNC_KEY_SHARE, waProto.ProtocolMessage_HISTORY_SYNC_NOTIFICATION, waProto.ProtocolMessage_INITIAL_SECURITY_NOTIFICATION_SETTING_SYNC:
return "ignore"
default:
return fmt.Sprintf("unknown_protocol_%d", waMsg.GetProtocolMessage().GetType())
}
case waMsg.ButtonsMessage != nil:
return "buttons"
case waMsg.ButtonsResponseMessage != nil:
return "buttons response"
case waMsg.TemplateMessage != nil:
return "template"
case waMsg.HighlyStructuredMessage != nil:
return "highly structured template"
case waMsg.TemplateButtonReplyMessage != nil:
return "template button reply"
case waMsg.InteractiveMessage != nil:
return "interactive"
case waMsg.ListMessage != nil:
return "list"
case waMsg.ProductMessage != nil:
return "product"
case waMsg.ListResponseMessage != nil:
return "list response"
case waMsg.OrderMessage != nil:
return "order"
case waMsg.InvoiceMessage != nil:
return "invoice"
case waMsg.SendPaymentMessage != nil, waMsg.RequestPaymentMessage != nil,
waMsg.DeclinePaymentRequestMessage != nil, waMsg.CancelPaymentRequestMessage != nil,
waMsg.PaymentInviteMessage != nil:
return "payment"
case waMsg.Call != nil:
return "call"
case waMsg.Chat != nil:
return "chat"
case waMsg.SenderKeyDistributionMessage != nil, waMsg.StickerSyncRmrMessage != nil:
return "ignore"
default:
return "unknown"
}
}
func pluralUnit(val int, name string) string {
if val == 1 {
return fmt.Sprintf("%d %s", val, name)
} else if val == 0 {
return ""
}
return fmt.Sprintf("%d %ss", val, name)
}
func naturalJoin(parts []string) string {
if len(parts) == 0 {
return ""
} else if len(parts) == 1 {
return parts[0]
} else if len(parts) == 2 {
return fmt.Sprintf("%s and %s", parts[0], parts[1])
} else {
return fmt.Sprintf("%s and %s", strings.Join(parts[:len(parts)-1], ", "), parts[len(parts)-1])
}
}
func formatDuration(d time.Duration) string {
const Day = time.Hour * 24
var days, hours, minutes, seconds int
days, d = int(d/Day), d%Day
hours, d = int(d/time.Hour), d%time.Hour
minutes, d = int(d/time.Minute), d%time.Minute
seconds = int(d / time.Second)
parts := make([]string, 0, 4)
if days > 0 {
parts = append(parts, pluralUnit(days, "day"))
}
if hours > 0 {
parts = append(parts, pluralUnit(hours, "hour"))
}
if minutes > 0 {
parts = append(parts, pluralUnit(seconds, "minute"))
}
if seconds > 0 {
parts = append(parts, pluralUnit(seconds, "second"))
}
return naturalJoin(parts)
}
func (portal *Portal) convertMessage(intent *appservice.IntentAPI, source *User, info *types.MessageInfo, waMsg *waProto.Message) *ConvertedMessage {
switch {
case waMsg.Conversation != nil || waMsg.ExtendedTextMessage != nil:
return portal.convertTextMessage(intent, waMsg)
case waMsg.ImageMessage != nil:
return portal.convertMediaMessage(intent, source, info, waMsg.GetImageMessage())
case waMsg.StickerMessage != nil:
return portal.convertMediaMessage(intent, source, info, waMsg.GetStickerMessage())
case waMsg.VideoMessage != nil:
return portal.convertMediaMessage(intent, source, info, waMsg.GetVideoMessage())
case waMsg.AudioMessage != nil:
return portal.convertMediaMessage(intent, source, info, waMsg.GetAudioMessage())
case waMsg.DocumentMessage != nil:
return portal.convertMediaMessage(intent, source, info, waMsg.GetDocumentMessage())
case waMsg.ContactMessage != nil:
return portal.convertContactMessage(intent, waMsg.GetContactMessage())
case waMsg.ContactsArrayMessage != nil:
return portal.convertContactsArrayMessage(intent, waMsg.GetContactsArrayMessage())
case waMsg.LocationMessage != nil:
return portal.convertLocationMessage(intent, waMsg.GetLocationMessage())
case waMsg.LiveLocationMessage != nil:
return portal.convertLiveLocationMessage(intent, waMsg.GetLiveLocationMessage())
case waMsg.GroupInviteMessage != nil:
return portal.convertGroupInviteMessage(intent, info, waMsg.GetGroupInviteMessage())
case waMsg.ProtocolMessage != nil && waMsg.ProtocolMessage.GetType() == waProto.ProtocolMessage_EPHEMERAL_SETTING:
portal.ExpirationTime = waMsg.ProtocolMessage.GetEphemeralExpiration()
portal.Update()
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: &event.MessageEventContent{
Body: portal.formatDisappearingMessageNotice(),
MsgType: event.MsgNotice,
},
}
default:
return nil
}
}
func (portal *Portal) UpdateGroupDisappearingMessages(sender *types.JID, timestamp time.Time, timer uint32) {
portal.ExpirationTime = timer
portal.Update()
intent := portal.MainIntent()
if sender != nil {
intent = portal.bridge.GetPuppetByJID(sender.ToNonAD()).IntentFor(portal)
} else {
sender = &types.EmptyJID
}
_, err := portal.sendMessage(intent, event.EventMessage, &event.MessageEventContent{
Body: portal.formatDisappearingMessageNotice(),
MsgType: event.MsgNotice,
}, nil, timestamp.UnixMilli())
if err != nil {
portal.log.Warnfln("Failed to notify portal about disappearing message timer change by %s to %d", *sender, timer)
}
}
func (portal *Portal) formatDisappearingMessageNotice() string {
if portal.ExpirationTime == 0 {
return "Turned off disappearing messages"
} else {
msg := fmt.Sprintf("Set the disappearing message timer to %s", formatDuration(time.Duration(portal.ExpirationTime)*time.Second))
if !portal.bridge.Config.Bridge.DisappearingMessagesInGroups && portal.IsGroupChat() {
msg += ". However, this bridge is not configured to disappear messages in group chats."
}
return msg
}
}
const UndecryptableMessageNotice = "Decrypting message from WhatsApp failed, waiting for sender to re-send... " +
"([learn more](https://faq.whatsapp.com/general/security-and-privacy/seeing-waiting-for-this-message-this-may-take-a-while))"
var undecryptableMessageContent event.MessageEventContent
func init() {
undecryptableMessageContent = format.RenderMarkdown(UndecryptableMessageNotice, true, false)
undecryptableMessageContent.MsgType = event.MsgNotice
}
func (portal *Portal) handleUndecryptableMessage(source *User, evt *events.UndecryptableMessage) {
if len(portal.MXID) == 0 {
portal.log.Warnln("handleUndecryptableMessage called even though portal.MXID is empty")
return
} else if portal.isRecentlyHandled(evt.Info.ID, true) {
portal.log.Debugfln("Not handling %s (undecryptable): message was recently handled", evt.Info.ID)
return
} else if existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, evt.Info.ID); existingMsg != nil {
portal.log.Debugfln("Not handling %s (undecryptable): message is duplicate", evt.Info.ID)
return
}
intent := portal.getMessageIntent(source, &evt.Info)
if !intent.IsCustomPuppet && portal.IsPrivateChat() && evt.Info.Sender.User == portal.Key.Receiver.User {
portal.log.Debugfln("Not handling %s (undecryptable): user doesn't have double puppeting enabled", evt.Info.ID)
return
}
content := undecryptableMessageContent
resp, err := portal.sendMessage(intent, event.EventMessage, &content, nil, evt.Info.Timestamp.UnixMilli())
if err != nil {
portal.log.Errorln("Failed to send decryption error of %s to Matrix: %v", evt.Info.ID, err)
}
portal.finishHandling(nil, &evt.Info, resp.EventID, true)
}
func (portal *Portal) handleFakeMessage(msg fakeMessage) {
if portal.isRecentlyHandled(msg.ID, false) {
portal.log.Debugfln("Not handling %s (fake): message was recently handled", msg.ID)
return
} else if existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, msg.ID); existingMsg != nil {
portal.log.Debugfln("Not handling %s (fake): message is duplicate", msg.ID)
return
}
intent := portal.bridge.GetPuppetByJID(msg.Sender).IntentFor(portal)
if !intent.IsCustomPuppet && portal.IsPrivateChat() && msg.Sender.User == portal.Key.Receiver.User {
portal.log.Debugfln("Not handling %s (fake): user doesn't have double puppeting enabled", msg.ID)
return
}
msgType := event.MsgNotice
if msg.Important {
msgType = event.MsgText
}
resp, err := portal.sendMessage(intent, event.EventMessage, &event.MessageEventContent{
MsgType: msgType,
Body: msg.Text,
}, nil, msg.Time.UnixMilli())
if err != nil {
portal.log.Errorfln("Failed to send %s to Matrix: %v", msg.ID, err)
} else {
portal.finishHandling(nil, &types.MessageInfo{
ID: msg.ID,
Timestamp: msg.Time,
MessageSource: types.MessageSource{
Sender: msg.Sender,
},
}, resp.EventID, false)
}
}
func (portal *Portal) handleMessage(source *User, evt *events.Message) {
if len(portal.MXID) == 0 {
portal.log.Warnln("handleMessage called even though portal.MXID is empty")
return
}
msgID := evt.Info.ID
msgType := getMessageType(evt.Message)
if msgType == "ignore" {
return
} else if portal.isRecentlyHandled(msgID, false) {
portal.log.Debugfln("Not handling %s (%s): message was recently handled", msgID, msgType)
return
}
existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, msgID)
if existingMsg != nil {
if existingMsg.DecryptionError {
portal.log.Debugfln("Got decryptable version of previously undecryptable message %s (%s)", msgID, msgType)
} else {
portal.log.Debugfln("Not handling %s (%s): message is duplicate", msgID, msgType)
return
}
}
intent := portal.getMessageIntent(source, &evt.Info)
if !intent.IsCustomPuppet && portal.IsPrivateChat() && evt.Info.Sender.User == portal.Key.Receiver.User {
portal.log.Debugfln("Not handling %s (%s): user doesn't have double puppeting enabled", msgID, msgType)
return
}
converted := portal.convertMessage(intent, source, &evt.Info, evt.Message)
if converted != nil {
if evt.Info.IsIncomingBroadcast() {
if converted.Extra == nil {
converted.Extra = map[string]interface{}{}
}
converted.Extra["fi.mau.whatsapp.source_broadcast_list"] = evt.Info.Chat.String()
}
var eventID id.EventID
if existingMsg != nil {
portal.MarkDisappearing(existingMsg.MXID, converted.ExpiresIn, false)
converted.Content.SetEdit(existingMsg.MXID)
} else if len(converted.ReplyTo) > 0 {
portal.SetReply(converted.Content, converted.ReplyTo)
}
resp, err := portal.sendMessage(converted.Intent, converted.Type, converted.Content, converted.Extra, evt.Info.Timestamp.UnixMilli())
if err != nil {
portal.log.Errorfln("Failed to send %s to Matrix: %v", msgID, err)
} else {
portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
eventID = resp.EventID
}
// TODO figure out how to handle captions with undecryptable messages turning decryptable
if converted.Caption != nil && existingMsg == nil {
resp, err = portal.sendMessage(converted.Intent, converted.Type, converted.Caption, nil, evt.Info.Timestamp.UnixMilli())
if err != nil {
portal.log.Errorfln("Failed to send caption of %s to Matrix: %v", msgID, err)
} else {
portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
eventID = resp.EventID
}
}
if converted.MultiEvent != nil && existingMsg == nil {
for index, subEvt := range converted.MultiEvent {
resp, err = portal.sendMessage(converted.Intent, converted.Type, subEvt, nil, evt.Info.Timestamp.UnixMilli())
if err != nil {
portal.log.Errorfln("Failed to send sub-event %d of %s to Matrix: %v", index+1, msgID, err)
} else {
portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
}
}
}
if len(eventID) != 0 {
portal.finishHandling(existingMsg, &evt.Info, eventID, false)
}
} else if msgType == "revoke" {
portal.HandleMessageRevoke(source, &evt.Info, evt.Message.GetProtocolMessage().GetKey())
if existingMsg != nil {
_, _ = portal.MainIntent().RedactEvent(portal.MXID, existingMsg.MXID, mautrix.ReqRedact{
Reason: "The undecryptable message was actually the deletion of another message",
})
existingMsg.UpdateMXID("net.maunium.whatsapp.fake::"+existingMsg.MXID, false)
}
} else {
portal.log.Warnfln("Unhandled message: %+v (%s)", evt.Info, msgType)
if existingMsg != nil {
_, _ = portal.MainIntent().RedactEvent(portal.MXID, existingMsg.MXID, mautrix.ReqRedact{
Reason: "The undecryptable message contained an unsupported message type",
})
existingMsg.UpdateMXID("net.maunium.whatsapp.fake::"+existingMsg.MXID, false)
}
return
}
portal.bridge.Metrics.TrackWhatsAppMessage(evt.Info.Timestamp, strings.Split(msgType, " ")[0])
}
func (portal *Portal) isRecentlyHandled(id types.MessageID, decryptionError bool) bool {
start := portal.recentlyHandledIndex
lookingForMsg := recentlyHandledWrapper{id, decryptionError}
for i := start; i != start; i = (i - 1) % recentlyHandledLength {
if portal.recentlyHandled[i] == lookingForMsg {
return true
}
}
return false
}
func init() {
gob.Register(&waProto.Message{})
}
func (portal *Portal) markHandled(msg *database.Message, info *types.MessageInfo, mxid id.EventID, isSent, recent, decryptionError bool) *database.Message {
if msg == nil {
msg = portal.bridge.DB.Message.New()
msg.Chat = portal.Key
msg.JID = info.ID
msg.MXID = mxid
msg.Timestamp = info.Timestamp
msg.Sender = info.Sender
msg.Sent = isSent
msg.DecryptionError = decryptionError
if info.IsIncomingBroadcast() {
msg.BroadcastListJID = info.Chat
}
msg.Insert()
} else {
msg.UpdateMXID(mxid, decryptionError)
}
if recent {
portal.recentlyHandledLock.Lock()
index := portal.recentlyHandledIndex
portal.recentlyHandledIndex = (portal.recentlyHandledIndex + 1) % recentlyHandledLength
portal.recentlyHandledLock.Unlock()
portal.recentlyHandled[index] = recentlyHandledWrapper{msg.JID, decryptionError}
}
return msg
}
func (portal *Portal) getMessagePuppet(user *User, info *types.MessageInfo) *Puppet {
if info.IsFromMe {
return portal.bridge.GetPuppetByJID(user.JID)
} else if portal.IsPrivateChat() {
return portal.bridge.GetPuppetByJID(portal.Key.JID)
} else {
puppet := portal.bridge.GetPuppetByJID(info.Sender)
puppet.SyncContact(user, true, "handling message")
return puppet
}
}
func (portal *Portal) getMessageIntent(user *User, info *types.MessageInfo) *appservice.IntentAPI {
return portal.getMessagePuppet(user, info).IntentFor(portal)
}
func (portal *Portal) finishHandling(existing *database.Message, message *types.MessageInfo, mxid id.EventID, decryptionError bool) {
portal.markHandled(existing, message, mxid, true, true, decryptionError)
portal.sendDeliveryReceipt(mxid)
if !decryptionError {
portal.log.Debugln("Handled message", message.ID, "->", mxid)
} else {
portal.log.Debugln("Handled message", message.ID, "->", mxid, "(undecryptable message error notice)")
}
}
func (portal *Portal) kickExtraUsers(participantMap map[types.JID]bool) {
members, err := portal.MainIntent().JoinedMembers(portal.MXID)
if err != nil {
portal.log.Warnln("Failed to get member list:", err)
return
}
for member := range members.Joined {
jid, ok := portal.bridge.ParsePuppetMXID(member)
if ok {
_, shouldBePresent := participantMap[jid]
if !shouldBePresent {
_, err = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{
UserID: member,
Reason: "User had left this WhatsApp chat",
})
if err != nil {
portal.log.Warnfln("Failed to kick user %s who had left: %v", member, err)
}
}
}
}
}
//func (portal *Portal) SyncBroadcastRecipients(source *User, metadata *whatsapp.BroadcastListInfo) {
// participantMap := make(map[whatsapp.JID]bool)
// for _, recipient := range metadata.Recipients {
// participantMap[recipient.JID] = true
//
// puppet := portal.bridge.GetPuppetByJID(recipient.JID)
// puppet.SyncContactIfNecessary(source)
// err := puppet.DefaultIntent().EnsureJoined(portal.MXID)
// if err != nil {
// portal.log.Warnfln("Failed to make puppet of %s join %s: %v", recipient.JID, portal.MXID, err)
// }
// }
// portal.kickExtraUsers(participantMap)
//}
func (portal *Portal) SyncParticipants(source *User, metadata *types.GroupInfo) {
changed := false
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
changed = true
}
participantMap := make(map[types.JID]bool)
for _, participant := range metadata.Participants {
participantMap[participant.JID] = true
puppet := portal.bridge.GetPuppetByJID(participant.JID)
puppet.SyncContact(source, true, "group participant")
user := portal.bridge.GetUserByJID(participant.JID)
if user != nil {
portal.ensureUserInvited(user)
}
if user == nil || !puppet.IntentFor(portal).IsCustomPuppet {
err = puppet.IntentFor(portal).EnsureJoined(portal.MXID)
if err != nil {
portal.log.Warnfln("Failed to make puppet of %s join %s: %v", participant.JID, portal.MXID, err)
}
}
expectedLevel := 0
if participant.IsSuperAdmin {
expectedLevel = 95
} else if participant.IsAdmin {
expectedLevel = 50
}
changed = levels.EnsureUserLevel(puppet.MXID, expectedLevel) || changed
if user != nil {
changed = levels.EnsureUserLevel(user.MXID, expectedLevel) || changed
}
}
if changed {
_, err = portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
}
}
portal.kickExtraUsers(participantMap)
}
func (portal *Portal) UpdateAvatar(user *User, setBy types.JID, updateInfo bool) bool {
avatar, err := user.Client.GetProfilePictureInfo(portal.Key.JID, false)
if err != nil {
if !errors.Is(err, whatsmeow.ErrProfilePictureUnauthorized) {
portal.log.Warnln("Failed to get avatar URL:", err)
}
return false
} else if avatar == nil {
if portal.Avatar == "remove" {
return false
}
portal.AvatarURL = id.ContentURI{}
avatar = &types.ProfilePictureInfo{ID: "remove"}
} else if avatar.ID == portal.Avatar {
return false
} else if len(avatar.URL) == 0 {
portal.log.Warnln("Didn't get URL in response to avatar query")
return false
} else {
url, err := reuploadAvatar(portal.MainIntent(), avatar.URL)
if err != nil {
portal.log.Warnln("Failed to reupload avatar:", err)
return false
}
portal.AvatarURL = url
}
if len(portal.MXID) > 0 {
intent := portal.MainIntent()
if !setBy.IsEmpty() {
intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
}
_, err = intent.SetRoomAvatar(portal.MXID, portal.AvatarURL)
if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
_, err = portal.MainIntent().SetRoomAvatar(portal.MXID, portal.AvatarURL)
}
if err != nil {
portal.log.Warnln("Failed to set room topic:", err)
return false
}
}
portal.Avatar = avatar.ID
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
}
func (portal *Portal) UpdateName(name string, setBy types.JID, updateInfo bool) bool {
if name == "" && portal.IsBroadcastList() {
name = UnnamedBroadcastName
}
if portal.Name != name {
portal.log.Debugfln("Updating name %s -> %s", portal.Name, name)
portal.Name = name
intent := portal.MainIntent()
if !setBy.IsEmpty() {
intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
}
_, err := intent.SetRoomName(portal.MXID, name)
if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
_, err = portal.MainIntent().SetRoomName(portal.MXID, name)
}
if err == nil {
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
} else {
portal.Name = ""
portal.log.Warnln("Failed to set room name:", err)
}
}
return false
}
func (portal *Portal) UpdateTopic(topic string, setBy types.JID, updateInfo bool) bool {
if portal.Topic != topic {
portal.log.Debugfln("Updating topic %s -> %s", portal.Topic, topic)
portal.Topic = topic
intent := portal.MainIntent()
if !setBy.IsEmpty() {
intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
}
_, err := intent.SetRoomTopic(portal.MXID, topic)
if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
_, err = portal.MainIntent().SetRoomTopic(portal.MXID, topic)
}
if err == nil {
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
} else {
portal.Topic = ""
portal.log.Warnln("Failed to set room topic:", err)
}
}
return false
}
func (portal *Portal) UpdateMetadata(user *User, groupInfo *types.GroupInfo) bool {
if portal.IsPrivateChat() {
return false
} else if portal.IsStatusBroadcastList() {
update := false
update = portal.UpdateName(StatusBroadcastName, types.EmptyJID, false) || update
update = portal.UpdateTopic(StatusBroadcastTopic, types.EmptyJID, false) || update
return update
} else if portal.IsBroadcastList() {
update := false
//broadcastMetadata, err := user.Conn.GetBroadcastMetadata(portal.Key.JID)
//if err == nil && broadcastMetadata.Status == 200 {
// portal.SyncBroadcastRecipients(user, broadcastMetadata)
// update = portal.UpdateName(broadcastMetadata.Name, "", nil, false) || update
//} else {
// user.Conn.Store.ContactsLock.RLock()
// contact, _ := user.Conn.Store.Contacts[portal.Key.JID]
// user.Conn.Store.ContactsLock.RUnlock()
// update = portal.UpdateName(contact.Name, "", nil, false) || update
//}
//update = portal.UpdateTopic(BroadcastTopic, "", nil, false) || update
return update
}
if groupInfo == nil {
var err error
groupInfo, err = user.Client.GetGroupInfo(portal.Key.JID)
if err != nil {
portal.log.Errorln("Failed to get group info:", err)
return false
}
}
portal.SyncParticipants(user, groupInfo)
update := false
update = portal.UpdateName(groupInfo.Name, groupInfo.NameSetBy, false) || update
update = portal.UpdateTopic(groupInfo.Topic, groupInfo.TopicSetBy, false) || update
if portal.ExpirationTime != groupInfo.DisappearingTimer {
update = true
portal.ExpirationTime = groupInfo.DisappearingTimer
}
portal.RestrictMessageSending(groupInfo.IsAnnounce)
portal.RestrictMetadataChanges(groupInfo.IsLocked)
return update
}
func (portal *Portal) ensureMXIDInvited(mxid id.UserID) {
err := portal.MainIntent().EnsureInvited(portal.MXID, mxid)
if err != nil {
portal.log.Warnfln("Failed to ensure %s is invited to %s: %v", mxid, portal.MXID, err)
}
}
func (portal *Portal) ensureUserInvited(user *User) bool {
return user.ensureInvited(portal.MainIntent(), portal.MXID, portal.IsPrivateChat())
}
func (portal *Portal) UpdateMatrixRoom(user *User, groupInfo *types.GroupInfo) bool {
if len(portal.MXID) == 0 {
return false
}
portal.log.Infoln("Syncing portal for", user.MXID)
portal.ensureUserInvited(user)
go portal.addToSpace(user)
update := false
update = portal.UpdateMetadata(user, groupInfo) || update
if !portal.IsPrivateChat() && !portal.IsBroadcastList() && portal.Avatar == "" {
update = portal.UpdateAvatar(user, types.EmptyJID, false) || update
}
if update {
portal.Update()
portal.UpdateBridgeInfo()
}
return true
}
func (portal *Portal) GetBasePowerLevels() *event.PowerLevelsEventContent {
anyone := 0
nope := 99
invite := 50
if portal.bridge.Config.Bridge.AllowUserInvite {
invite = 0
}
return &event.PowerLevelsEventContent{
UsersDefault: anyone,
EventsDefault: anyone,
RedactPtr: &anyone,
StateDefaultPtr: &nope,
BanPtr: &nope,
InvitePtr: &invite,
Users: map[id.UserID]int{
portal.MainIntent().UserID: 100,
},
Events: map[string]int{
event.StateRoomName.Type: anyone,
event.StateRoomAvatar.Type: anyone,
event.StateTopic.Type: anyone,
},
}
}
func (portal *Portal) ChangeAdminStatus(jids []types.JID, setAdmin bool) id.EventID {
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
}
newLevel := 0
if setAdmin {
newLevel = 50
}
changed := false
for _, jid := range jids {
puppet := portal.bridge.GetPuppetByJID(jid)
changed = levels.EnsureUserLevel(puppet.MXID, newLevel) || changed
user := portal.bridge.GetUserByJID(jid)
if user != nil {
changed = levels.EnsureUserLevel(user.MXID, newLevel) || changed
}
}
if changed {
resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
} else {
return resp.EventID
}
}
return ""
}
func (portal *Portal) RestrictMessageSending(restrict bool) id.EventID {
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
}
newLevel := 0
if restrict {
newLevel = 50
}
if levels.EventsDefault == newLevel {
return ""
}
levels.EventsDefault = newLevel
resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
return ""
} else {
return resp.EventID
}
}
func (portal *Portal) RestrictMetadataChanges(restrict bool) id.EventID {
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
}
newLevel := 0
if restrict {
newLevel = 50
}
changed := false
changed = levels.EnsureEventLevel(event.StateRoomName, newLevel) || changed
changed = levels.EnsureEventLevel(event.StateRoomAvatar, newLevel) || changed
changed = levels.EnsureEventLevel(event.StateTopic, newLevel) || changed
if changed {
resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
} else {
return resp.EventID
}
}
return ""
}
func (portal *Portal) getBridgeInfo() (string, event.BridgeEventContent) {
bridgeInfo := event.BridgeEventContent{
BridgeBot: portal.bridge.Bot.UserID,
Creator: portal.MainIntent().UserID,
Protocol: event.BridgeInfoSection{
ID: "whatsapp",
DisplayName: "WhatsApp",
AvatarURL: portal.bridge.Config.AppService.Bot.ParsedAvatar.CUString(),
ExternalURL: "https://www.whatsapp.com/",
},
Channel: event.BridgeInfoSection{
ID: portal.Key.JID.String(),
DisplayName: portal.Name,
AvatarURL: portal.AvatarURL.CUString(),
},
}
bridgeInfoStateKey := fmt.Sprintf("net.maunium.whatsapp://whatsapp/%s", portal.Key.JID)
return bridgeInfoStateKey, bridgeInfo
}
func (portal *Portal) UpdateBridgeInfo() {
if len(portal.MXID) == 0 {
portal.log.Debugln("Not updating bridge info: no Matrix room created")
return
}
portal.log.Debugln("Updating bridge info...")
stateKey, content := portal.getBridgeInfo()
_, err := portal.MainIntent().SendStateEvent(portal.MXID, event.StateBridge, stateKey, content)
if err != nil {
portal.log.Warnln("Failed to update m.bridge:", err)
}
// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
_, err = portal.MainIntent().SendStateEvent(portal.MXID, event.StateHalfShotBridge, stateKey, content)
if err != nil {
portal.log.Warnln("Failed to update uk.half-shot.bridge:", err)
}
}
func (portal *Portal) CreateMatrixRoom(user *User, groupInfo *types.GroupInfo, isFullInfo bool) error {
portal.roomCreateLock.Lock()
defer portal.roomCreateLock.Unlock()
if len(portal.MXID) > 0 {
return nil
}
intent := portal.MainIntent()
if err := intent.EnsureRegistered(); err != nil {
return err
}
portal.log.Infoln("Creating Matrix room. Info source:", user.MXID)
//var broadcastMetadata *types.BroadcastListInfo
if portal.IsPrivateChat() {
puppet := portal.bridge.GetPuppetByJID(portal.Key.JID)
puppet.SyncContact(user, true, "creating private chat portal")
if portal.bridge.Config.Bridge.PrivateChatPortalMeta {
portal.Name = puppet.Displayname
portal.AvatarURL = puppet.AvatarURL
portal.Avatar = puppet.Avatar
} else {
portal.Name = ""
}
portal.Topic = PrivateChatTopic
} else if portal.IsStatusBroadcastList() {
if !portal.bridge.Config.Bridge.EnableStatusBroadcast {
portal.log.Debugln("Status bridging is disabled in config, not creating room after all")
return ErrStatusBroadcastDisabled
}
portal.Name = StatusBroadcastName
portal.Topic = StatusBroadcastTopic
} else if portal.IsBroadcastList() {
//var err error
//broadcastMetadata, err = user.Conn.GetBroadcastMetadata(portal.Key.JID)
//if err == nil && broadcastMetadata.Status == 200 {
// portal.Name = broadcastMetadata.Name
//} else {
// user.Conn.Store.ContactsLock.RLock()
// contact, _ := user.Conn.Store.Contacts[portal.Key.JID]
// user.Conn.Store.ContactsLock.RUnlock()
// portal.Name = contact.Name
//}
//if len(portal.Name) == 0 {
// portal.Name = UnnamedBroadcastName
//}
//portal.Topic = BroadcastTopic
portal.log.Debugln("Broadcast list is not yet supported, not creating room after all")
return fmt.Errorf("broadcast list bridging is currently not supported")
} else {
if groupInfo == nil || !isFullInfo {
foundInfo, err := user.Client.GetGroupInfo(portal.Key.JID)
if err != nil {
portal.log.Warnfln("Failed to get group info through %s: %v", user.JID, err)
} else {
groupInfo = foundInfo
isFullInfo = true
}
}
if groupInfo != nil {
portal.Name = groupInfo.Name
portal.Topic = groupInfo.Topic
}
portal.UpdateAvatar(user, types.EmptyJID, false)
}
bridgeInfoStateKey, bridgeInfo := portal.getBridgeInfo()
initialState := []*event.Event{{
Type: event.StatePowerLevels,
Content: event.Content{
Parsed: portal.GetBasePowerLevels(),
},
}, {
Type: event.StateBridge,
Content: event.Content{Parsed: bridgeInfo},
StateKey: &bridgeInfoStateKey,
}, {
// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
Type: event.StateHalfShotBridge,
Content: event.Content{Parsed: bridgeInfo},
StateKey: &bridgeInfoStateKey,
}}
if !portal.AvatarURL.IsEmpty() {
initialState = append(initialState, &event.Event{
Type: event.StateRoomAvatar,
Content: event.Content{
Parsed: event.RoomAvatarEventContent{URL: portal.AvatarURL},
},
})
}
var invite []id.UserID
if portal.bridge.Config.Bridge.Encryption.Default {
initialState = append(initialState, &event.Event{
Type: event.StateEncryption,
Content: event.Content{
Parsed: event.EncryptionEventContent{Algorithm: id.AlgorithmMegolmV1},
},
})
portal.Encrypted = true
if portal.IsPrivateChat() {
invite = append(invite, portal.bridge.Bot.UserID)
}
}
creationContent := make(map[string]interface{})
if !portal.bridge.Config.Bridge.FederateRooms {
creationContent["m.federate"] = false
}
resp, err := intent.CreateRoom(&mautrix.ReqCreateRoom{
Visibility: "private",
Name: portal.Name,
Topic: portal.Topic,
Invite: invite,
Preset: "private_chat",
IsDirect: portal.IsPrivateChat(),
InitialState: initialState,
CreationContent: creationContent,
})
if err != nil {
return err
}
portal.MXID = resp.RoomID
portal.Update()
portal.bridge.portalsLock.Lock()
portal.bridge.portalsByMXID[portal.MXID] = portal
portal.bridge.portalsLock.Unlock()
// We set the memberships beforehand to make sure the encryption key exchange in initial backfill knows the users are here.
for _, userID := range invite {
portal.bridge.StateStore.SetMembership(portal.MXID, userID, event.MembershipInvite)
}
portal.ensureUserInvited(user)
user.syncChatDoublePuppetDetails(portal, true)
go portal.addToSpace(user)
if groupInfo != nil {
portal.SyncParticipants(user, groupInfo)
if groupInfo.IsAnnounce {
portal.RestrictMessageSending(groupInfo.IsAnnounce)
}
if groupInfo.IsLocked {
portal.RestrictMetadataChanges(groupInfo.IsLocked)
}
}
//if broadcastMetadata != nil {
// portal.SyncBroadcastRecipients(user, broadcastMetadata)
//}
if portal.IsPrivateChat() {
puppet := user.bridge.GetPuppetByJID(portal.Key.JID)
if portal.bridge.Config.Bridge.Encryption.Default {
err = portal.bridge.Bot.EnsureJoined(portal.MXID)
if err != nil {
portal.log.Errorln("Failed to join created portal with bridge bot for e2be:", err)
}
}
user.UpdateDirectChats(map[id.UserID][]id.RoomID{puppet.MXID: {portal.MXID}})
}
firstEventResp, err := portal.MainIntent().SendMessageEvent(portal.MXID, PortalCreationDummyEvent, struct{}{})
if err != nil {
portal.log.Errorln("Failed to send dummy event to mark portal creation:", err)
} else {
portal.FirstEventID = firstEventResp.EventID
portal.Update()
}
return nil
}
func (portal *Portal) addToSpace(user *User) {
spaceID := user.GetSpaceRoom()
if len(spaceID) == 0 || user.IsInSpace(portal.Key) {
return
}
_, err := portal.bridge.Bot.SendStateEvent(spaceID, event.StateSpaceChild, portal.MXID.String(), &event.SpaceChildEventContent{
Via: []string{portal.bridge.Config.Homeserver.Domain},
})
if err != nil {
portal.log.Errorfln("Failed to add room to %s's personal filtering space (%s): %v", user.MXID, spaceID, err)
} else {
portal.log.Debugfln("Added room to %s's personal filtering space (%s)", user.MXID, spaceID)
user.MarkInSpace(portal.Key)
}
}
func (portal *Portal) IsPrivateChat() bool {
return portal.Key.JID.Server == types.DefaultUserServer
}
func (portal *Portal) IsGroupChat() bool {
return portal.Key.JID.Server == types.GroupServer
}
func (portal *Portal) IsBroadcastList() bool {
return portal.Key.JID.Server == types.BroadcastServer
}
func (portal *Portal) IsStatusBroadcastList() bool {
return portal.Key.JID == types.StatusBroadcastJID
}
func (portal *Portal) HasRelaybot() bool {
return portal.bridge.Config.Bridge.Relay.Enabled && len(portal.RelayUserID) > 0
}
func (portal *Portal) GetRelayUser() *User {
if !portal.HasRelaybot() {
return nil
} else if portal.relayUser == nil {
portal.relayUser = portal.bridge.GetUserByMXID(portal.RelayUserID)
}
return portal.relayUser
}
func (portal *Portal) MainIntent() *appservice.IntentAPI {
if portal.IsPrivateChat() {
return portal.bridge.GetPuppetByJID(portal.Key.JID).DefaultIntent()
}
return portal.bridge.Bot
}
func (portal *Portal) SetReply(content *event.MessageEventContent, replyToID types.MessageID) bool {
if len(replyToID) == 0 {
return false
}
message := portal.bridge.DB.Message.GetByJID(portal.Key, replyToID)
if message == nil || message.IsFakeMXID() {
return false
}
evt, err := portal.MainIntent().GetEvent(portal.MXID, message.MXID)
if err != nil {
portal.log.Warnln("Failed to get reply target:", err)
content.RelatesTo = &event.RelatesTo{
EventID: message.MXID,
Type: event.RelReply,
}
return true
}
_ = evt.Content.ParseRaw(evt.Type)
if evt.Type == event.EventEncrypted {
decryptedEvt, err := portal.bridge.Crypto.Decrypt(evt)
if err != nil {
portal.log.Warnln("Failed to decrypt reply target:", err)
} else {
evt = decryptedEvt
}
}
content.SetReply(evt)
return true
}
func (portal *Portal) HandleMessageRevoke(user *User, info *types.MessageInfo, key *waProto.MessageKey) bool {
msg := portal.bridge.DB.Message.GetByJID(portal.Key, key.GetId())
if msg == nil || msg.IsFakeMXID() {
return false
}
intent := portal.bridge.GetPuppetByJID(info.Sender).IntentFor(portal)
redactionReq := mautrix.ReqRedact{Extra: map[string]interface{}{}}
if intent.IsCustomPuppet {
redactionReq.Extra[doublePuppetKey] = doublePuppetValue
}
_, err := intent.RedactEvent(portal.MXID, msg.MXID, redactionReq)
if err != nil {
if errors.Is(err, mautrix.MForbidden) {
_, err = portal.MainIntent().RedactEvent(portal.MXID, msg.MXID, redactionReq)
if err != nil {
portal.log.Errorln("Failed to redact %s: %v", msg.JID, err)
}
}
} else {
msg.Delete()
}
return true
}
func (portal *Portal) sendMainIntentMessage(content *event.MessageEventContent) (*mautrix.RespSendEvent, error) {
return portal.sendMessage(portal.MainIntent(), event.EventMessage, content, nil, 0)
}
func (portal *Portal) encrypt(content *event.Content, eventType event.Type) (event.Type, error) {
if portal.Encrypted && portal.bridge.Crypto != nil {
// TODO maybe the locking should be inside mautrix-go?
portal.encryptLock.Lock()
encrypted, err := portal.bridge.Crypto.Encrypt(portal.MXID, eventType, *content)
portal.encryptLock.Unlock()
if err != nil {
return eventType, fmt.Errorf("failed to encrypt event: %w", err)
}
eventType = event.EventEncrypted
content.Parsed = encrypted
}
return eventType, nil
}
const doublePuppetKey = "fi.mau.double_puppet_source"
const doublePuppetValue = "mautrix-whatsapp"
func (portal *Portal) sendMessage(intent *appservice.IntentAPI, eventType event.Type, content *event.MessageEventContent, extraContent map[string]interface{}, timestamp int64) (*mautrix.RespSendEvent, error) {
wrappedContent := event.Content{Parsed: content, Raw: extraContent}
if timestamp != 0 && intent.IsCustomPuppet {
if wrappedContent.Raw == nil {
wrappedContent.Raw = map[string]interface{}{}
}
if intent.IsCustomPuppet {
wrappedContent.Raw[doublePuppetKey] = doublePuppetValue
}
}
var err error
eventType, err = portal.encrypt(&wrappedContent, eventType)
if err != nil {
return nil, err
}
if intent.IsCustomPuppet {
wrappedContent.Raw = map[string]interface{}{doublePuppetKey: doublePuppetValue}
} else {
wrappedContent.Raw = nil
}
_, _ = intent.UserTyping(portal.MXID, false, 0)
if timestamp == 0 {
return intent.SendMessageEvent(portal.MXID, eventType, &wrappedContent)
} else {
return intent.SendMassagedMessageEvent(portal.MXID, eventType, &wrappedContent, timestamp)
}
}
type ConvertedMessage struct {
Intent *appservice.IntentAPI
Type event.Type
Content *event.MessageEventContent
Extra map[string]interface{}
Caption *event.MessageEventContent
MultiEvent []*event.MessageEventContent
ReplyTo types.MessageID
ExpiresIn uint32
}
func (portal *Portal) convertTextMessage(intent *appservice.IntentAPI, msg *waProto.Message) *ConvertedMessage {
content := &event.MessageEventContent{
Body: msg.GetConversation(),
MsgType: event.MsgText,
}
var replyTo types.MessageID
var expiresIn uint32
if msg.GetExtendedTextMessage() != nil {
content.Body = msg.GetExtendedTextMessage().GetText()
contextInfo := msg.GetExtendedTextMessage().GetContextInfo()
if contextInfo != nil {
portal.bridge.Formatter.ParseWhatsApp(content, contextInfo.GetMentionedJid())
replyTo = contextInfo.GetStanzaId()
}
expiresIn = contextInfo.GetExpiration()
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: content,
ReplyTo: replyTo,
ExpiresIn: expiresIn,
}
}
func (portal *Portal) convertLiveLocationMessage(intent *appservice.IntentAPI, msg *waProto.LiveLocationMessage) *ConvertedMessage {
content := &event.MessageEventContent{
Body: "Started sharing live location",
MsgType: event.MsgNotice,
}
if len(msg.GetCaption()) > 0 {
content.Body += ": " + msg.GetCaption()
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: content,
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
}
}
func (portal *Portal) convertLocationMessage(intent *appservice.IntentAPI, msg *waProto.LocationMessage) *ConvertedMessage {
url := msg.GetUrl()
if len(url) == 0 {
url = fmt.Sprintf("https://maps.google.com/?q=%.5f,%.5f", msg.GetDegreesLatitude(), msg.GetDegreesLongitude())
}
name := msg.GetName()
if len(name) == 0 {
latChar := 'N'
if msg.GetDegreesLatitude() < 0 {
latChar = 'S'
}
longChar := 'E'
if msg.GetDegreesLongitude() < 0 {
longChar = 'W'
}
name = fmt.Sprintf("%.4f° %c %.4f° %c", math.Abs(msg.GetDegreesLatitude()), latChar, math.Abs(msg.GetDegreesLongitude()), longChar)
}
content := &event.MessageEventContent{
MsgType: event.MsgLocation,
Body: fmt.Sprintf("Location: %s\n%s\n%s", name, msg.GetAddress(), url),
Format: event.FormatHTML,
FormattedBody: fmt.Sprintf("Location: %s
%s", url, name, msg.GetAddress()),
GeoURI: fmt.Sprintf("geo:%.5f,%.5f", msg.GetDegreesLatitude(), msg.GetDegreesLongitude()),
}
if len(msg.GetJpegThumbnail()) > 0 {
thumbnailMime := http.DetectContentType(msg.GetJpegThumbnail())
uploadedThumbnail, _ := intent.UploadBytes(msg.GetJpegThumbnail(), thumbnailMime)
if uploadedThumbnail != nil {
cfg, _, _ := image.DecodeConfig(bytes.NewReader(msg.GetJpegThumbnail()))
content.Info = &event.FileInfo{
ThumbnailInfo: &event.FileInfo{
Size: len(msg.GetJpegThumbnail()),
Width: cfg.Width,
Height: cfg.Height,
MimeType: thumbnailMime,
},
ThumbnailURL: uploadedThumbnail.ContentURI.CUString(),
}
}
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: content,
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
}
}
const inviteMsg = `%s
This invitation to join "%s" expires at %s. Reply to this message with !wa accept to accept the invite.`
const inviteMetaField = "fi.mau.whatsapp.invite"
func (portal *Portal) convertGroupInviteMessage(intent *appservice.IntentAPI, info *types.MessageInfo, msg *waProto.GroupInviteMessage) *ConvertedMessage {
expiry := time.Unix(msg.GetInviteExpiration(), 0)
htmlMessage := fmt.Sprintf(inviteMsg, html.EscapeString(msg.GetCaption()), msg.GetGroupName(), expiry)
content := &event.MessageEventContent{
MsgType: event.MsgText,
Body: format.HTMLToText(htmlMessage),
Format: event.FormatHTML,
FormattedBody: htmlMessage,
}
extraAttrs := map[string]interface{}{
inviteMetaField: map[string]interface{}{
"jid": msg.GetGroupJid(),
"code": msg.GetInviteCode(),
"expiration": strconv.FormatInt(msg.GetInviteExpiration(), 10),
"inviter": info.Sender.ToNonAD().String(),
},
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: content,
Extra: extraAttrs,
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
}
}
func (portal *Portal) convertContactMessage(intent *appservice.IntentAPI, msg *waProto.ContactMessage) *ConvertedMessage {
fileName := fmt.Sprintf("%s.vcf", msg.GetDisplayName())
data := []byte(msg.GetVcard())
mimeType := "text/vcard"
data, uploadMimeType, file := portal.encryptFile(data, mimeType)
uploadResp, err := intent.UploadBytesWithName(data, uploadMimeType, fileName)
if err != nil {
portal.log.Errorfln("Failed to upload vcard of %s: %v", msg.GetDisplayName(), err)
return nil
}
content := &event.MessageEventContent{
Body: fileName,
MsgType: event.MsgFile,
File: file,
Info: &event.FileInfo{
MimeType: mimeType,
Size: len(msg.GetVcard()),
},
}
if content.File != nil {
content.File.URL = uploadResp.ContentURI.CUString()
} else {
content.URL = uploadResp.ContentURI.CUString()
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: content,
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
}
}
func (portal *Portal) convertContactsArrayMessage(intent *appservice.IntentAPI, msg *waProto.ContactsArrayMessage) *ConvertedMessage {
name := msg.GetDisplayName()
if len(name) == 0 {
name = fmt.Sprintf("%d contacts", len(msg.GetContacts()))
}
contacts := make([]*event.MessageEventContent, 0, len(msg.GetContacts()))
for _, contact := range msg.GetContacts() {
converted := portal.convertContactMessage(intent, contact)
if converted != nil {
contacts = append(contacts, converted.Content)
}
}
return &ConvertedMessage{
Intent: intent,
Type: event.EventMessage,
Content: &event.MessageEventContent{
MsgType: event.MsgNotice,
Body: fmt.Sprintf("Sent %s", name),
},
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
MultiEvent: contacts,
}
}
func (portal *Portal) tryKickUser(userID id.UserID, intent *appservice.IntentAPI) error {
_, err := intent.KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: userID})
if err != nil {
httpErr, ok := err.(mautrix.HTTPError)
if ok && httpErr.RespError != nil && httpErr.RespError.ErrCode == "M_FORBIDDEN" {
_, err = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: userID})
}
}
return err
}
func (portal *Portal) removeUser(isSameUser bool, kicker *appservice.IntentAPI, target id.UserID, targetIntent *appservice.IntentAPI) {
if !isSameUser || targetIntent == nil {
err := portal.tryKickUser(target, kicker)
if err != nil {
portal.log.Warnfln("Failed to kick %s from %s: %v", target, portal.MXID, err)
if targetIntent != nil {
_, _ = portal.leaveWithPuppetMeta(targetIntent)
}
}
} else {
_, err := portal.leaveWithPuppetMeta(targetIntent)
if err != nil {
portal.log.Warnfln("Failed to leave portal as %s: %v", target, err)
_, _ = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: target})
}
}
}
func (portal *Portal) HandleWhatsAppKick(source *User, senderJID types.JID, jids []types.JID) {
sender := portal.bridge.GetPuppetByJID(senderJID)
senderIntent := sender.IntentFor(portal)
for _, jid := range jids {
//if source != nil && source.JID.User == jid.User {
// portal.log.Debugln("Ignoring self-kick by", source.MXID)
// continue
//}
puppet := portal.bridge.GetPuppetByJID(jid)
portal.removeUser(puppet.JID == sender.JID, senderIntent, puppet.MXID, puppet.DefaultIntent())
if !portal.IsBroadcastList() {
user := portal.bridge.GetUserByJID(jid)
if user != nil {
var customIntent *appservice.IntentAPI
if puppet.CustomMXID == user.MXID {
customIntent = puppet.CustomIntent()
}
portal.removeUser(puppet.JID == sender.JID, senderIntent, user.MXID, customIntent)
}
}
}
}
func (portal *Portal) leaveWithPuppetMeta(intent *appservice.IntentAPI) (*mautrix.RespSendEvent, error) {
content := event.Content{
Parsed: event.MemberEventContent{
Membership: event.MembershipLeave,
},
Raw: map[string]interface{}{
doublePuppetKey: doublePuppetValue,
},
}
// Bypass IntentAPI, we don't want to EnsureJoined here
return intent.Client.SendStateEvent(portal.MXID, event.StateMember, intent.UserID.String(), &content)
}
func (portal *Portal) HandleWhatsAppInvite(source *User, senderJID *types.JID, jids []types.JID) (evtID id.EventID) {
intent := portal.MainIntent()
if senderJID != nil && !senderJID.IsEmpty() {
sender := portal.bridge.GetPuppetByJID(*senderJID)
intent = sender.IntentFor(portal)
}
for _, jid := range jids {
puppet := portal.bridge.GetPuppetByJID(jid)
puppet.SyncContact(source, true, "handling whatsapp invite")
content := event.Content{
Parsed: event.MemberEventContent{
Membership: "invite",
Displayname: puppet.Displayname,
AvatarURL: puppet.AvatarURL.CUString(),
},
Raw: map[string]interface{}{
doublePuppetKey: doublePuppetValue,
},
}
resp, err := intent.SendStateEvent(portal.MXID, event.StateMember, puppet.MXID.String(), &content)
if err != nil {
portal.log.Warnfln("Failed to invite %s as %s: %v", puppet.MXID, intent.UserID, err)
_ = portal.MainIntent().EnsureInvited(portal.MXID, puppet.MXID)
} else {
evtID = resp.EventID
}
err = puppet.DefaultIntent().EnsureJoined(portal.MXID)
if err != nil {
portal.log.Errorfln("Failed to ensure %s is joined: %v", puppet.MXID, err)
}
}
return
}
func (portal *Portal) makeMediaBridgeFailureMessage(intent *appservice.IntentAPI, info *types.MessageInfo, bridgeErr error, captionContent *event.MessageEventContent) *ConvertedMessage {
portal.log.Errorfln("Failed to bridge media for %s: %v", info.ID, bridgeErr)
return &ConvertedMessage{Intent: intent, Type: event.EventMessage, Content: &event.MessageEventContent{
MsgType: event.MsgNotice,
Body: "Failed to bridge media",
}, Caption: captionContent}
}
func (portal *Portal) encryptFile(data []byte, mimeType string) ([]byte, string, *event.EncryptedFileInfo) {
if !portal.Encrypted {
return data, mimeType, nil
}
file := &event.EncryptedFileInfo{
EncryptedFile: *attachment.NewEncryptedFile(),
URL: "",
}
return file.Encrypt(data), "application/octet-stream", file
}
type MediaMessage interface {
whatsmeow.DownloadableMessage
GetContextInfo() *waProto.ContextInfo
GetMimetype() string
}
type MediaMessageWithThumbnail interface {
MediaMessage
GetJpegThumbnail() []byte
}
type MediaMessageWithCaption interface {
MediaMessage
GetCaption() string
}
type MediaMessageWithDimensions interface {
MediaMessage
GetHeight() uint32
GetWidth() uint32
}
type MediaMessageWithFileName interface {
MediaMessage
GetFileName() string
}
type MediaMessageWithDuration interface {
MediaMessage
GetSeconds() uint32
}
func (portal *Portal) convertMediaMessage(intent *appservice.IntentAPI, source *User, info *types.MessageInfo, msg MediaMessage) *ConvertedMessage {
messageWithCaption, ok := msg.(MediaMessageWithCaption)
var captionContent *event.MessageEventContent
if ok && len(messageWithCaption.GetCaption()) > 0 {
captionContent = &event.MessageEventContent{
Body: messageWithCaption.GetCaption(),
MsgType: event.MsgNotice,
}
portal.bridge.Formatter.ParseWhatsApp(captionContent, msg.GetContextInfo().GetMentionedJid())
}
data, err := source.Client.Download(msg)
// TODO can these errors still be handled?
//if errors.Is(err, whatsapp.ErrMediaDownloadFailedWith404) || errors.Is(err, whatsapp.ErrMediaDownloadFailedWith410) {
// portal.log.Warnfln("Failed to download media for %s: %v. Calling LoadMediaInfo and retrying download...", msg.info.Id, err)
// _, err = source.Conn.LoadMediaInfo(msg.info.RemoteJid, msg.info.Id, msg.info.FromMe)
// if err != nil {
// portal.sendMediaBridgeFailure(source, intent, msg.info, fmt.Errorf("failed to load media info: %w", err))
// return true
// }
// data, err = msg.download()
//}
if errors.Is(err, whatsmeow.ErrNoURLPresent) {
portal.log.Debugfln("No URL present error for media message %s, ignoring...", info.ID)
return nil
} else if errors.Is(err, whatsmeow.ErrFileLengthMismatch) || errors.Is(err, whatsmeow.ErrInvalidMediaSHA256) {
portal.log.Warnfln("Mismatching media checksums in %s: %v. Ignoring because WhatsApp seems to ignore them too", info.ID, err)
} else if err != nil {
return portal.makeMediaBridgeFailureMessage(intent, info, err, captionContent)
}
var width, height int
messageWithDimensions, ok := msg.(MediaMessageWithDimensions)
if ok {
width = int(messageWithDimensions.GetWidth())
height = int(messageWithDimensions.GetHeight())
}
if width == 0 && height == 0 && strings.HasPrefix(msg.GetMimetype(), "image/") {
cfg, _, _ := image.DecodeConfig(bytes.NewReader(data))
width, height = cfg.Width, cfg.Height
}
data, uploadMimeType, file := portal.encryptFile(data, msg.GetMimetype())
uploaded, err := intent.UploadBytes(data, uploadMimeType)
if err != nil {
if errors.Is(err, mautrix.MTooLarge) {
return portal.makeMediaBridgeFailureMessage(intent, info, errors.New("homeserver rejected too large file"), captionContent)
} else if httpErr, ok := err.(mautrix.HTTPError); ok && httpErr.IsStatus(413) {
return portal.makeMediaBridgeFailureMessage(intent, info, errors.New("proxy rejected too large file"), captionContent)
} else {
return portal.makeMediaBridgeFailureMessage(intent, info, fmt.Errorf("failed to upload media: %w", err), captionContent)
}
}
content := &event.MessageEventContent{
File: file,
Info: &event.FileInfo{
Size: len(data),
MimeType: msg.GetMimetype(),
Width: width,
Height: height,
},
}
msgWithName, ok := msg.(MediaMessageWithFileName)
if ok && len(msgWithName.GetFileName()) > 0 {
content.Body = msgWithName.GetFileName()
} else {
mimeClass := strings.Split(msg.GetMimetype(), "/")[0]
switch mimeClass {
case "application":
content.Body = "file"
default:
content.Body = mimeClass
}
content.Body += util.ExtensionFromMimetype(msg.GetMimetype())
}
msgWithDuration, ok := msg.(MediaMessageWithDuration)
if ok {
content.Info.Duration = int(msgWithDuration.GetSeconds()) * 1000
}
if content.File != nil {
content.File.URL = uploaded.ContentURI.CUString()
} else {
content.URL = uploaded.ContentURI.CUString()
}
messageWithThumbnail, ok := msg.(MediaMessageWithThumbnail)
if ok && messageWithThumbnail.GetJpegThumbnail() != nil && portal.bridge.Config.Bridge.WhatsappThumbnail {
thumbnailData := messageWithThumbnail.GetJpegThumbnail()
thumbnailMime := http.DetectContentType(thumbnailData)
thumbnailCfg, _, _ := image.DecodeConfig(bytes.NewReader(thumbnailData))
thumbnailSize := len(thumbnailData)
thumbnail, thumbnailUploadMime, thumbnailFile := portal.encryptFile(thumbnailData, thumbnailMime)
uploadedThumbnail, err := intent.UploadBytes(thumbnail, thumbnailUploadMime)
if err != nil {
portal.log.Warnfln("Failed to upload thumbnail for %s: %v", info.ID, err)
} else if uploadedThumbnail != nil {
if thumbnailFile != nil {
thumbnailFile.URL = uploadedThumbnail.ContentURI.CUString()
content.Info.ThumbnailFile = thumbnailFile
} else {
content.Info.ThumbnailURL = uploadedThumbnail.ContentURI.CUString()
}
content.Info.ThumbnailInfo = &event.FileInfo{
Size: thumbnailSize,
Width: thumbnailCfg.Width,
Height: thumbnailCfg.Height,
MimeType: thumbnailMime,
}
}
}
_, isSticker := msg.(*waProto.StickerMessage)
switch strings.ToLower(strings.Split(msg.GetMimetype(), "/")[0]) {
case "image":
if !isSticker {
content.MsgType = event.MsgImage
}
case "video":
content.MsgType = event.MsgVideo
case "audio":
content.MsgType = event.MsgAudio
default:
content.MsgType = event.MsgFile
}
eventType := event.EventMessage
if isSticker {
eventType = event.EventSticker
}
audioMessage, ok := msg.(*waProto.AudioMessage)
extraContent := map[string]interface{}{}
if ok {
extraContent["org.matrix.msc1767.audio"] = map[string]interface{}{
"duration": int(audioMessage.GetSeconds()) * 1000,
}
if audioMessage.GetPtt() {
extraContent["org.matrix.msc3245.voice"] = map[string]interface{}{}
}
}
return &ConvertedMessage{
Intent: intent,
Type: eventType,
Content: content,
Caption: captionContent,
ReplyTo: msg.GetContextInfo().GetStanzaId(),
ExpiresIn: msg.GetContextInfo().GetExpiration(),
Extra: extraContent,
}
}
const thumbnailMaxSize = 72
const thumbnailMinSize = 24
func createJPEGThumbnail(source []byte) ([]byte, error) {
src, _, err := image.Decode(bytes.NewReader(source))
if err != nil {
return nil, fmt.Errorf("failed to decode thumbnail: %w", err)
}
imageBounds := src.Bounds()
width, height := imageBounds.Max.X, imageBounds.Max.Y
var img image.Image
if width <= thumbnailMaxSize && height <= thumbnailMaxSize {
// No need to resize
img = src
} else {
if width == height {
width = thumbnailMaxSize
height = thumbnailMaxSize
} else if width < height {
width /= height / thumbnailMaxSize
height = thumbnailMaxSize
} else {
height /= width / thumbnailMaxSize
width = thumbnailMaxSize
}
if width < thumbnailMinSize {
width = thumbnailMinSize
}
if height < thumbnailMinSize {
height = thumbnailMinSize
}
dst := image.NewRGBA(image.Rect(0, 0, width, height))
draw.NearestNeighbor.Scale(dst, dst.Rect, src, src.Bounds(), draw.Over, nil)
img = dst
}
var buf bytes.Buffer
err = jpeg.Encode(&buf, img, &jpeg.Options{Quality: jpeg.DefaultQuality})
if err != nil {
return nil, fmt.Errorf("failed to re-encode thumbnail: %w", err)
}
return buf.Bytes(), nil
}
func (portal *Portal) downloadThumbnail(original []byte, thumbnailURL id.ContentURIString, eventID id.EventID) ([]byte, error) {
if len(thumbnailURL) == 0 {
// just fall back to making thumbnail of original
} else if mxc, err := thumbnailURL.Parse(); err != nil {
portal.log.Warnfln("Malformed thumbnail URL in %s: %v (falling back to generating thumbnail from source)", eventID, err)
} else if thumbnail, err := portal.MainIntent().DownloadBytes(mxc); err != nil {
portal.log.Warnfln("Failed to download thumbnail in %s: %v (falling back to generating thumbnail from source)", eventID, err)
} else {
return createJPEGThumbnail(thumbnail)
}
return createJPEGThumbnail(original)
}
func (portal *Portal) convertWebPtoPNG(webpImage []byte) ([]byte, error) {
webpDecoded, err := webp.Decode(bytes.NewReader(webpImage))
if err != nil {
return nil, fmt.Errorf("failed to decode webp image: %w", err)
}
var pngBuffer bytes.Buffer
if err := png.Encode(&pngBuffer, webpDecoded); err != nil {
return nil, fmt.Errorf("failed to encode png image: %w", err)
}
return pngBuffer.Bytes(), nil
}
func (portal *Portal) preprocessMatrixMedia(sender *User, relaybotFormatted bool, content *event.MessageEventContent, eventID id.EventID, mediaType whatsmeow.MediaType) *MediaUpload {
var caption string
var mentionedJIDs []string
if relaybotFormatted {
caption, mentionedJIDs = portal.bridge.Formatter.ParseMatrix(content.FormattedBody)
}
var file *event.EncryptedFileInfo
rawMXC := content.URL
if content.File != nil {
file = content.File
rawMXC = file.URL
}
mxc, err := rawMXC.Parse()
if err != nil {
portal.log.Errorln("Malformed content URL in %s: %v", eventID, err)
return nil
}
data, err := portal.MainIntent().DownloadBytes(mxc)
if err != nil {
portal.log.Errorfln("Failed to download media in %s: %v", eventID, err)
return nil
}
if file != nil {
data, err = file.Decrypt(data)
if err != nil {
portal.log.Errorfln("Failed to decrypt media in %s: %v", eventID, err)
return nil
}
}
if mediaType == whatsmeow.MediaVideo && content.GetInfo().MimeType == "image/gif" {
data, err = ffmpeg.ConvertBytes(data, ".mp4", []string{"-f", "gif"}, []string{
"-pix_fmt", "yuv420p", "-c:v", "libx264", "-movflags", "+faststart",
"-filter:v", "crop='floor(in_w/2)*2:floor(in_h/2)*2'",
}, content.GetInfo().MimeType)
if err != nil {
portal.log.Errorfln("Failed to convert gif to mp4 in %s: %v", eventID, err)
return nil
}
content.Info.MimeType = "video/mp4"
}
if mediaType == whatsmeow.MediaImage && content.GetInfo().MimeType == "image/webp" {
data, err = portal.convertWebPtoPNG(data)
if err != nil {
portal.log.Errorfln("Failed to convert webp to png in %s: %v", eventID, err)
return nil
}
content.Info.MimeType = "image/png"
}
uploadResp, err := sender.Client.Upload(context.Background(), data, mediaType)
if err != nil {
portal.log.Errorfln("Failed to upload media in %s: %v", eventID, err)
return nil
}
// Audio doesn't have thumbnails
var thumbnail []byte
if mediaType != whatsmeow.MediaAudio {
thumbnail, err = portal.downloadThumbnail(data, content.GetInfo().ThumbnailURL, eventID)
// Ignore format errors for non-image files, we don't care about those thumbnails
if err != nil && (!errors.Is(err, image.ErrFormat) || mediaType == whatsmeow.MediaImage) {
portal.log.Errorfln("Failed to generate thumbnail for %s: %v", eventID, err)
}
}
return &MediaUpload{
UploadResponse: uploadResp,
Caption: caption,
MentionedJIDs: mentionedJIDs,
Thumbnail: thumbnail,
FileLength: len(data),
}
}
type MediaUpload struct {
whatsmeow.UploadResponse
Caption string
MentionedJIDs []string
Thumbnail []byte
FileLength int
}
func (portal *Portal) addRelaybotFormat(sender *User, content *event.MessageEventContent) bool {
member := portal.MainIntent().Member(portal.MXID, sender.MXID)
if member == nil {
member = &event.MemberEventContent{}
}
if content.Format != event.FormatHTML {
content.FormattedBody = strings.Replace(html.EscapeString(content.Body), "\n", "
", -1)
content.Format = event.FormatHTML
}
data, err := portal.bridge.Config.Bridge.Relay.FormatMessage(content, sender.MXID, *member)
if err != nil {
portal.log.Errorln("Failed to apply relaybot format:", err)
}
content.FormattedBody = data
return true
}
func addCodecToMime(mimeType, codec string) string {
mediaType, params, err := mime.ParseMediaType(mimeType)
if err != nil {
return mimeType
}
if _, ok := params["codecs"]; !ok {
params["codecs"] = codec
}
return mime.FormatMediaType(mediaType, params)
}
func parseGeoURI(uri string) (lat, long float64, err error) {
if !strings.HasPrefix(uri, "geo:") {
err = fmt.Errorf("uri doesn't have geo: prefix")
return
}
// Remove geo: prefix and anything after ;
coordinates := strings.Split(strings.TrimPrefix(uri, "geo:"), ";")[0]
if splitCoordinates := strings.Split(coordinates, ","); len(splitCoordinates) != 2 {
err = fmt.Errorf("didn't find exactly two numbers separated by a comma")
} else if lat, err = strconv.ParseFloat(splitCoordinates[0], 64); err != nil {
err = fmt.Errorf("latitude is not a number: %w", err)
} else if long, err = strconv.ParseFloat(splitCoordinates[1], 64); err != nil {
err = fmt.Errorf("longitude is not a number: %w", err)
}
return
}
func (portal *Portal) convertMatrixMessage(sender *User, evt *event.Event) (*waProto.Message, *User) {
content, ok := evt.Content.Parsed.(*event.MessageEventContent)
if !ok {
portal.log.Debugfln("Failed to handle event %s: unexpected parsed content type %T", evt.ID, evt.Content.Parsed)
return nil, sender
}
var msg waProto.Message
var ctxInfo waProto.ContextInfo
replyToID := content.GetReplyTo()
if len(replyToID) > 0 {
replyToMsg := portal.bridge.DB.Message.GetByMXID(replyToID)
if replyToMsg != nil && !replyToMsg.IsFakeJID() {
ctxInfo.StanzaId = &replyToMsg.JID
ctxInfo.Participant = proto.String(replyToMsg.Sender.ToNonAD().String())
// Using blank content here seems to work fine on all official WhatsApp apps.
//
// We could probably invent a slightly more accurate version of the quoted message
// by fetching the Matrix event and converting it to the WhatsApp format, but that's
// a lot of work and this works fine.
ctxInfo.QuotedMessage = &waProto.Message{Conversation: proto.String("")}
}
}
if portal.ExpirationTime != 0 {
ctxInfo.Expiration = proto.Uint32(portal.ExpirationTime)
}
relaybotFormatted := false
if !sender.IsLoggedIn() || (portal.IsPrivateChat() && sender.JID.User != portal.Key.Receiver.User) {
if !portal.HasRelaybot() {
portal.log.Warnln("Ignoring message from", sender.MXID, "in chat with no relaybot (convertMatrixMessage)")
return nil, sender
}
relaybotFormatted = portal.addRelaybotFormat(sender, content)
sender = portal.GetRelayUser()
}
if evt.Type == event.EventSticker {
content.MsgType = event.MsgImage
}
if content.MsgType == event.MsgImage && content.GetInfo().MimeType == "image/gif" {
content.MsgType = event.MsgVideo
}
switch content.MsgType {
case event.MsgText, event.MsgEmote, event.MsgNotice:
text := content.Body
if content.MsgType == event.MsgNotice && !portal.bridge.Config.Bridge.BridgeNotices {
return nil, sender
}
if content.Format == event.FormatHTML {
text, ctxInfo.MentionedJid = portal.bridge.Formatter.ParseMatrix(content.FormattedBody)
}
if content.MsgType == event.MsgEmote && !relaybotFormatted {
text = "/me " + text
}
if ctxInfo.StanzaId != nil || ctxInfo.MentionedJid != nil || ctxInfo.Expiration != nil {
msg.ExtendedTextMessage = &waProto.ExtendedTextMessage{
Text: &text,
ContextInfo: &ctxInfo,
}
} else {
msg.Conversation = &text
}
case event.MsgImage:
media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaImage)
if media == nil {
return nil, sender
}
ctxInfo.MentionedJid = media.MentionedJIDs
msg.ImageMessage = &waProto.ImageMessage{
ContextInfo: &ctxInfo,
Caption: &media.Caption,
JpegThumbnail: media.Thumbnail,
Url: &media.URL,
MediaKey: media.MediaKey,
Mimetype: &content.GetInfo().MimeType,
FileEncSha256: media.FileEncSHA256,
FileSha256: media.FileSHA256,
FileLength: proto.Uint64(uint64(media.FileLength)),
}
case event.MsgVideo:
gifPlayback := content.GetInfo().MimeType == "image/gif"
media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaVideo)
if media == nil {
return nil, sender
}
duration := uint32(content.GetInfo().Duration / 1000)
ctxInfo.MentionedJid = media.MentionedJIDs
msg.VideoMessage = &waProto.VideoMessage{
ContextInfo: &ctxInfo,
Caption: &media.Caption,
JpegThumbnail: media.Thumbnail,
Url: &media.URL,
MediaKey: media.MediaKey,
Mimetype: &content.GetInfo().MimeType,
GifPlayback: &gifPlayback,
Seconds: &duration,
FileEncSha256: media.FileEncSHA256,
FileSha256: media.FileSHA256,
FileLength: proto.Uint64(uint64(media.FileLength)),
}
case event.MsgAudio:
media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaAudio)
if media == nil {
return nil, sender
}
duration := uint32(content.GetInfo().Duration / 1000)
msg.AudioMessage = &waProto.AudioMessage{
ContextInfo: &ctxInfo,
Url: &media.URL,
MediaKey: media.MediaKey,
Mimetype: &content.GetInfo().MimeType,
Seconds: &duration,
FileEncSha256: media.FileEncSHA256,
FileSha256: media.FileSHA256,
FileLength: proto.Uint64(uint64(media.FileLength)),
}
_, isMSC3245Voice := evt.Content.Raw["org.matrix.msc3245.voice"]
_, isMSC2516Voice := evt.Content.Raw["org.matrix.msc2516.voice"]
if isMSC3245Voice || isMSC2516Voice {
msg.AudioMessage.Ptt = proto.Bool(true)
// hacky hack to add the codecs param that whatsapp seems to require
msg.AudioMessage.Mimetype = proto.String(addCodecToMime(content.GetInfo().MimeType, "opus"))
}
case event.MsgFile:
media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaDocument)
if media == nil {
return nil, sender
}
msg.DocumentMessage = &waProto.DocumentMessage{
ContextInfo: &ctxInfo,
JpegThumbnail: media.Thumbnail,
Url: &media.URL,
Title: &content.Body,
FileName: &content.Body,
MediaKey: media.MediaKey,
Mimetype: &content.GetInfo().MimeType,
FileEncSha256: media.FileEncSHA256,
FileSha256: media.FileSHA256,
FileLength: proto.Uint64(uint64(media.FileLength)),
}
case event.MsgLocation:
lat, long, err := parseGeoURI(content.GeoURI)
if err != nil {
portal.log.Debugfln("Invalid geo URI on Matrix event %s: %v", evt.ID, err)
return nil, sender
}
msg.LocationMessage = &waProto.LocationMessage{
DegreesLatitude: &lat,
DegreesLongitude: &long,
Comment: &content.Body,
ContextInfo: &ctxInfo,
}
default:
portal.log.Debugfln("Unhandled Matrix event %s: unknown msgtype %s", evt.ID, content.MsgType)
return nil, sender
}
return &msg, sender
}
func (portal *Portal) sendErrorMessage(message string, confirmed bool) id.EventID {
certainty := "may not have been"
if confirmed {
certainty = "was not"
}
resp, err := portal.sendMainIntentMessage(&event.MessageEventContent{
MsgType: event.MsgNotice,
Body: fmt.Sprintf("\u26a0 Your message %s bridged: %v", certainty, message),
})
if err != nil {
portal.log.Warnfln("Failed to send bridging error message:", err)
return ""
}
return resp.EventID
}
func (portal *Portal) sendDeliveryReceipt(eventID id.EventID) {
if portal.bridge.Config.Bridge.DeliveryReceipts {
err := portal.bridge.Bot.MarkRead(portal.MXID, eventID)
if err != nil {
portal.log.Debugfln("Failed to send delivery receipt for %s: %v", eventID, err)
}
}
}
func (portal *Portal) generateMessageInfo(sender *User) *types.MessageInfo {
return &types.MessageInfo{
ID: whatsmeow.GenerateMessageID(),
Timestamp: time.Now(),
MessageSource: types.MessageSource{
Sender: sender.JID,
Chat: portal.Key.JID,
IsFromMe: true,
IsGroup: portal.Key.JID.Server == types.GroupServer || portal.Key.JID.Server == types.BroadcastServer,
},
}
}
func (portal *Portal) HandleMatrixMessage(sender *User, evt *event.Event) {
if !portal.canBridgeFrom(sender, "message") {
return
}
portal.log.Debugfln("Received event %s from %s", evt.ID, evt.Sender)
msg, sender := portal.convertMatrixMessage(sender, evt)
if msg == nil {
return
}
portal.MarkDisappearing(evt.ID, portal.ExpirationTime, true)
info := portal.generateMessageInfo(sender)
dbMsg := portal.markHandled(nil, info, evt.ID, false, true, false)
portal.log.Debugln("Sending event", evt.ID, "to WhatsApp", info.ID)
ts, err := sender.Client.SendMessage(portal.Key.JID, info.ID, msg)
if err != nil {
portal.log.Errorfln("Error sending message: %v", err)
portal.sendErrorMessage(err.Error(), true)
status := appservice.StatusPermFailure
if errors.Is(err, whatsmeow.ErrBroadcastListUnsupported) {
status = appservice.StatusUnsupported
}
checkpoint := appservice.NewMessageSendCheckpoint(evt, appservice.StepRemote, status, 0)
checkpoint.Info = err.Error()
go checkpoint.Send(portal.bridge.AS)
} else {
portal.log.Debugfln("Handled Matrix event %s", evt.ID)
portal.bridge.AS.SendMessageSendCheckpoint(evt, appservice.StepRemote, 0)
portal.sendDeliveryReceipt(evt.ID)
dbMsg.MarkSent(ts)
}
}
func (portal *Portal) HandleMatrixRedaction(sender *User, evt *event.Event) {
if !portal.canBridgeFrom(sender, "redaction") {
return
}
portal.log.Debugfln("Received redaction %s from %s", evt.ID, evt.Sender)
senderLogIdentifier := sender.MXID
if !sender.HasSession() {
sender = portal.GetRelayUser()
senderLogIdentifier += " (through relaybot)"
}
msg := portal.bridge.DB.Message.GetByMXID(evt.Redacts)
if msg == nil {
portal.log.Debugfln("Ignoring redaction %s of unknown event by %s", evt.ID, senderLogIdentifier)
portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("target not found"), true, 0)
return
} else if msg.IsFakeJID() {
portal.log.Debugfln("Ignoring redaction %s of fake event by %s", evt.ID, senderLogIdentifier)
portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("target is a fake event"), true, 0)
return
} else if msg.Sender.User != sender.JID.User {
portal.log.Debugfln("Ignoring redaction %s of %s/%s by %s: message was sent by someone else (%s, not %s)", evt.ID, msg.MXID, msg.JID, senderLogIdentifier, msg.Sender, sender.JID)
portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("message was sent by someone else"), true, 0)
return
}
portal.log.Debugfln("Sending redaction %s of %s/%s to WhatsApp", evt.ID, msg.MXID, msg.JID)
_, err := sender.Client.RevokeMessage(portal.Key.JID, msg.JID)
if err != nil {
portal.log.Errorfln("Error handling Matrix redaction %s: %v", evt.ID, err)
portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, err, true, 0)
} else {
portal.log.Debugfln("Handled Matrix redaction %s of %s", evt.ID, evt.Redacts)
portal.bridge.AS.SendMessageSendCheckpoint(evt, appservice.StepRemote, 0)
portal.sendDeliveryReceipt(evt.ID)
}
}
func (portal *Portal) HandleMatrixReadReceipt(sender *User, eventID id.EventID, receiptTimestamp time.Time, isExplicit bool) {
if !sender.IsLoggedIn() {
if isExplicit {
portal.log.Debugfln("Ignoring read receipt by %s: user is not connected to WhatsApp", sender.JID)
}
return
}
maxTimestamp := receiptTimestamp
// Implicit read receipts don't have an event ID that's already bridged
if isExplicit {
if message := portal.bridge.DB.Message.GetByMXID(eventID); message != nil {
maxTimestamp = message.Timestamp
}
}
prevTimestamp := sender.GetLastReadTS(portal.Key)
lastReadIsZero := false
if prevTimestamp.IsZero() {
prevTimestamp = maxTimestamp.Add(-2 * time.Second)
lastReadIsZero = true
}
messages := portal.bridge.DB.Message.GetMessagesBetween(portal.Key, prevTimestamp, maxTimestamp)
if len(messages) > 0 {
sender.SetLastReadTS(portal.Key, messages[len(messages)-1].Timestamp)
}
groupedMessages := make(map[types.JID][]types.MessageID)
for _, msg := range messages {
var key types.JID
if msg.IsFakeJID() || msg.Sender.User == sender.JID.User {
// Don't send read receipts for own messages or fake messages
continue
} else if !portal.IsPrivateChat() {
key = msg.Sender
} else if !msg.BroadcastListJID.IsEmpty() {
key = msg.BroadcastListJID
} // else: blank key (participant field isn't needed in direct chat read receipts)
groupedMessages[key] = append(groupedMessages[key], msg.JID)
}
// For explicit read receipts, log even if there are no targets. For implicit ones only log when there are targets
if len(groupedMessages) > 0 || isExplicit {
portal.log.Debugfln("Sending read receipts by %s (last read: %d, was zero: %t, explicit: %t): %v",
sender.JID, prevTimestamp.Unix(), lastReadIsZero, isExplicit, groupedMessages)
}
for messageSender, ids := range groupedMessages {
chatJID := portal.Key.JID
if messageSender.Server == types.BroadcastServer {
chatJID = messageSender
messageSender = portal.Key.JID
}
err := sender.Client.MarkRead(ids, receiptTimestamp, chatJID, messageSender)
if err != nil {
portal.log.Warnfln("Failed to mark %v as read by %s: %v", ids, sender.JID, err)
}
}
if isExplicit {
portal.ScheduleDisappearing()
}
}
func typingDiff(prev, new []id.UserID) (started, stopped []id.UserID) {
OuterNew:
for _, userID := range new {
for _, previousUserID := range prev {
if userID == previousUserID {
continue OuterNew
}
}
started = append(started, userID)
}
OuterPrev:
for _, userID := range prev {
for _, previousUserID := range new {
if userID == previousUserID {
continue OuterPrev
}
}
stopped = append(stopped, userID)
}
return
}
func (portal *Portal) setTyping(userIDs []id.UserID, state types.ChatPresence) {
for _, userID := range userIDs {
user := portal.bridge.GetUserByMXIDIfExists(userID)
if user == nil || !user.IsLoggedIn() {
continue
}
portal.log.Debugfln("Bridging typing change from %s to chat presence %s", state, user.MXID)
err := user.Client.SendChatPresence(state, portal.Key.JID)
if err != nil {
portal.log.Warnln("Error sending chat presence:", err)
}
}
}
func (portal *Portal) HandleMatrixTyping(newTyping []id.UserID) {
portal.currentlyTypingLock.Lock()
defer portal.currentlyTypingLock.Unlock()
startedTyping, stoppedTyping := typingDiff(portal.currentlyTyping, newTyping)
portal.currentlyTyping = newTyping
portal.setTyping(startedTyping, types.ChatPresenceComposing)
portal.setTyping(stoppedTyping, types.ChatPresencePaused)
}
func (portal *Portal) canBridgeFrom(sender *User, evtType string) bool {
if !sender.IsLoggedIn() {
if portal.HasRelaybot() {
return true
} else if sender.Session != nil {
portal.log.Debugln("Ignoring %s from %s as user is not connected", evtType, sender.MXID)
msg := format.RenderMarkdown(fmt.Sprintf("\u26a0 You are not connected to WhatsApp, so your %s was not bridged.", evtType), true, false)
msg.MsgType = event.MsgNotice
_, err := portal.sendMainIntentMessage(&msg)
if err != nil {
portal.log.Errorln("Failed to send bridging failure message:", err)
}
} else {
portal.log.Debugfln("Ignoring %s from non-logged-in user %s in chat with no relay user", evtType, sender.MXID)
}
return false
} else if portal.IsPrivateChat() && sender.JID.User != portal.Key.Receiver.User && !portal.HasRelaybot() {
portal.log.Debugfln("Ignoring %s from different user %s/%s in private chat with no relay user", evtType, sender.MXID, sender.JID)
return false
}
return true
}
func (portal *Portal) Delete() {
portal.Portal.Delete()
portal.bridge.portalsLock.Lock()
delete(portal.bridge.portalsByJID, portal.Key)
if len(portal.MXID) > 0 {
delete(portal.bridge.portalsByMXID, portal.MXID)
}
portal.bridge.portalsLock.Unlock()
}
func (portal *Portal) GetMatrixUsers() ([]id.UserID, error) {
members, err := portal.MainIntent().JoinedMembers(portal.MXID)
if err != nil {
return nil, fmt.Errorf("failed to get member list: %w", err)
}
var users []id.UserID
for userID := range members.Joined {
_, isPuppet := portal.bridge.ParsePuppetMXID(userID)
if !isPuppet && userID != portal.bridge.Bot.UserID {
users = append(users, userID)
}
}
return users, nil
}
func (portal *Portal) CleanupIfEmpty() {
users, err := portal.GetMatrixUsers()
if err != nil {
portal.log.Errorfln("Failed to get Matrix user list to determine if portal needs to be cleaned up: %v", err)
return
}
if len(users) == 0 {
portal.log.Infoln("Room seems to be empty, cleaning up...")
portal.Delete()
portal.Cleanup(false)
}
}
func (portal *Portal) Cleanup(puppetsOnly bool) {
if len(portal.MXID) == 0 {
return
}
if portal.IsPrivateChat() {
_, err := portal.MainIntent().LeaveRoom(portal.MXID)
if err != nil {
portal.log.Warnln("Failed to leave private chat portal with main intent:", err)
}
return
}
intent := portal.MainIntent()
members, err := intent.JoinedMembers(portal.MXID)
if err != nil {
portal.log.Errorln("Failed to get portal members for cleanup:", err)
return
}
for member := range members.Joined {
if member == intent.UserID {
continue
}
puppet := portal.bridge.GetPuppetByMXID(member)
if puppet != nil {
_, err = puppet.DefaultIntent().LeaveRoom(portal.MXID)
if err != nil {
portal.log.Errorln("Error leaving as puppet while cleaning up portal:", err)
}
} else if !puppetsOnly {
_, err = intent.KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: member, Reason: "Deleting portal"})
if err != nil {
portal.log.Errorln("Error kicking user while cleaning up portal:", err)
}
}
}
_, err = intent.LeaveRoom(portal.MXID)
if err != nil {
portal.log.Errorln("Error leaving with main intent while cleaning up portal:", err)
}
}
func (portal *Portal) HandleMatrixLeave(sender *User) {
if portal.IsPrivateChat() {
portal.log.Debugln("User left private chat portal, cleaning up and deleting...")
portal.Delete()
portal.Cleanup(false)
return
} else if portal.bridge.Config.Bridge.BridgeMatrixLeave {
err := sender.Client.LeaveGroup(portal.Key.JID)
if err != nil {
portal.log.Errorfln("Failed to leave group as %s: %v", sender.MXID, err)
return
}
//portal.log.Infoln("Leave response:", <-resp)
}
portal.CleanupIfEmpty()
}
func (portal *Portal) HandleMatrixKick(sender *User, target *Puppet) {
_, err := sender.Client.UpdateGroupParticipants(portal.Key.JID, map[types.JID]whatsmeow.ParticipantChange{
target.JID: whatsmeow.ParticipantChangeRemove,
})
if err != nil {
portal.log.Errorfln("Failed to kick %s from group as %s: %v", target.JID, sender.MXID, err)
return
}
//portal.log.Infoln("Kick %s response: %s", puppet.JID, <-resp)
}
func (portal *Portal) HandleMatrixInvite(sender *User, target *Puppet) {
_, err := sender.Client.UpdateGroupParticipants(portal.Key.JID, map[types.JID]whatsmeow.ParticipantChange{
target.JID: whatsmeow.ParticipantChangeAdd,
})
if err != nil {
portal.log.Errorfln("Failed to add %s to group as %s: %v", target.JID, sender.MXID, err)
return
}
//portal.log.Infofln("Add %s response: %s", puppet.JID, <-resp)
}
func (portal *Portal) HandleMatrixMeta(sender *User, evt *event.Event) {
var err error
switch content := evt.Content.Parsed.(type) {
case *event.RoomNameEventContent:
if content.Name == portal.Name {
return
}
portal.Name = content.Name
err = sender.Client.SetGroupName(portal.Key.JID, content.Name)
case *event.TopicEventContent:
if content.Topic == portal.Topic {
return
}
portal.Topic = content.Topic
err = sender.Client.SetGroupTopic(portal.Key.JID, "", "", content.Topic)
case *event.RoomAvatarEventContent:
// TODO implement
return
}
if err != nil {
portal.log.Errorln("Failed to update metadata:", err)
} else {
//out := <-resp
//portal.log.Debugln("Successfully updated metadata:", out)
}
}