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@ -4,10 +4,15 @@ import (
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"fmt"
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"strings"
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"database/sql"
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"github.com/gomarkdown/markdown"
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gomatrix "maunium.net/go/mautrix"
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"maunium.net/go/mautrix/crypto"
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"maunium.net/go/mautrix/event"
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"maunium.net/go/mautrix/id"
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_ "modernc.org/sqlite"
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)
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type MatrixDaemon struct {
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@ -17,6 +22,10 @@ type MatrixDaemon struct {
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userID id.UserID
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tokens map[string]UnverifiedUser // Map of tokens to users
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languages map[id.RoomID]string // Map of roomIDs to language codes
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isEncrypted map[id.RoomID]bool
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cryptoStore *crypto.SQLCryptoStore
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olm *crypto.OlmMachine
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db *sql.DB
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app *appContext
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}
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@ -27,17 +36,46 @@ type UnverifiedUser struct {
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type MatrixUser struct {
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RoomID string
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Encrypted bool
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UserID string
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Lang string
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Contact bool
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}
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type MatrixIdentifier struct {
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User string `json:"user"`
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IdentType string `json:"type"`
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func (m *MatrixDaemon) IsEncrypted(roomID id.RoomID) bool {
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return m.isEncrypted[roomID]
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}
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func (m *MatrixDaemon) GetEncryptionEvent(roomID id.RoomID) *event.EncryptionEventContent {
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return &event.EncryptionEventContent{
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Algorithm: id.AlgorithmMegolmV1,
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RotationPeriodMillis: 7 * 24 * 60 * 60 * 1000,
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RotationPeriodMessages: 100,
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}
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}
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// Users are assumed to only have one common channel with the bot, so we can stub this out.
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func (m *MatrixDaemon) FindSharedRooms(userID id.UserID) []id.RoomID { return []id.RoomID{} }
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type olmLogger struct {
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app *appContext
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}
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func (o olmLogger) Error(message string, args ...interface{}) {
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o.app.err.Printf("OLM: "+message+"\n", args)
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}
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func (o olmLogger) Warn(message string, args ...interface{}) {
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o.app.info.Printf("OLM: "+message+"\n", args)
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}
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func (m MatrixIdentifier) Type() string { return m.IdentType }
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func (o olmLogger) Debug(message string, args ...interface{}) {
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o.app.debug.Printf("OLM: "+message+"\n", args)
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}
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func (o olmLogger) Trace(message string, args ...interface{}) {
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o.app.debug.Printf("OLM [TRACE]: "+message+"\n", args)
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}
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var matrixFilter = gomatrix.Filter{
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Room: gomatrix.RoomFilter{
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@ -68,6 +106,7 @@ func newMatrixDaemon(app *appContext) (d *MatrixDaemon, err error) {
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userID: id.UserID(matrix.Key("user_id").String()),
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tokens: map[string]UnverifiedUser{},
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languages: map[id.RoomID]string{},
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isEncrypted: map[id.RoomID]bool{},
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app: app,
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}
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d.bot, err = gomatrix.NewClient(homeserver, d.userID, token)
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@ -80,6 +119,19 @@ func newMatrixDaemon(app *appContext) (d *MatrixDaemon, err error) {
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if user.Lang != "" {
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d.languages[id.RoomID(user.RoomID)] = user.Lang
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}
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d.isEncrypted[id.RoomID(user.RoomID)] = user.Encrypted
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}
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d.db, err = sql.Open("sqlite", app.config.Section("files").Key("matrix_sql").String())
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olmLog := &olmLogger{app}
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d.cryptoStore = crypto.NewSQLCryptoStore(d.db, "sqlite3", "jfa-go", "jfa-go", []byte("jfa-go"), olmLog)
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err = d.cryptoStore.CreateTables()
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if err != nil {
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return
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}
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d.olm = crypto.NewOlmMachine(d.bot, olmLog, d.cryptoStore, crypto.StateStore(d))
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err = d.olm.Load()
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if err != nil {
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return
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}
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return
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}
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@ -108,7 +160,20 @@ func (d *MatrixDaemon) generateAccessToken(homeserver, username, password string
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func (d *MatrixDaemon) run() {
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d.app.info.Println("Starting Matrix bot daemon")
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syncer := d.bot.Syncer.(*gomatrix.DefaultSyncer)
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syncer.OnEventType(event.NewEventType("m.room.message"), d.handleMessage)
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syncer.OnEventType(event.EventMessage, d.handleMessage)
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syncer.OnEventType(event.EventEncrypted, func(source gomatrix.EventSource, evt *event.Event) {
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decrypted, err := d.olm.DecryptMegolmEvent(evt)
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if err != nil {
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d.app.err.Printf("Failed to decrypt Matrix message: %v", err)
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return
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}
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d.handleMessage(source, decrypted)
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})
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syncer.OnSync(d.olm.ProcessSyncResponse)
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syncer.OnEventType(event.StateMember, func(source gomatrix.EventSource, evt *event.Event) {
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d.olm.HandleMemberEvent(evt)
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})
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// syncer.OnEventType("m.room.member", d.handleMembership)
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if err := d.bot.Sync(); err != nil {
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d.app.err.Printf("Matrix sync failed: %v", err)
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@ -117,6 +182,7 @@ func (d *MatrixDaemon) run() {
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func (d *MatrixDaemon) Shutdown() {
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d.bot.StopSync()
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d.db.Close()
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d.Stopped = true
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close(d.ShutdownChannel)
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}
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@ -170,20 +236,32 @@ func (d *MatrixDaemon) commandLang(evt *event.Event, code, lang string) {
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}
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}
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func (d *MatrixDaemon) CreateRoom(userID string) (id.RoomID, error) {
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room, err := d.bot.CreateRoom(&gomatrix.ReqCreateRoom{
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func (d *MatrixDaemon) CreateRoom(userID string) (roomID id.RoomID, encrypted bool, err error) {
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var room *gomatrix.RespCreateRoom
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room, err = d.bot.CreateRoom(&gomatrix.ReqCreateRoom{
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Visibility: "private",
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Invite: []id.UserID{id.UserID(userID)},
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Topic: d.app.config.Section("matrix").Key("topic").String(),
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})
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if err != nil {
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return "", err
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return
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}
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_, err = d.bot.SendStateEvent(room.RoomID, event.StateEncryption, "", &event.EncryptionEventContent{
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Algorithm: id.AlgorithmMegolmV1,
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RotationPeriodMillis: 7 * 24 * 60 * 60 * 1000,
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RotationPeriodMessages: 100,
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})
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if err == nil {
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encrypted = true
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} else {
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d.app.debug.Printf("Matrix: Failed to enable encryption in room: %v", err)
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}
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return room.RoomID, nil
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roomID = room.RoomID
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return
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}
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func (d *MatrixDaemon) SendStart(userID string) (ok bool) {
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roomID, err := d.CreateRoom(userID)
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roomID, encrypted, err := d.CreateRoom(userID)
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if err != nil {
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d.app.err.Printf("Failed to create room for user \"%s\": %v", userID, err)
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return
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@ -196,8 +274,10 @@ func (d *MatrixDaemon) SendStart(userID string) (ok bool) {
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RoomID: string(roomID),
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UserID: userID,
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Lang: lang,
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Encrypted: encrypted,
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},
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}
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d.isEncrypted[roomID] = encrypted
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_, err = d.bot.SendText(
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roomID,
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d.app.storage.lang.Telegram[lang].Strings.get("matrixStartMessage")+"\n\n"+pin+"\n\n"+
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@ -211,24 +291,48 @@ func (d *MatrixDaemon) SendStart(userID string) (ok bool) {
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return
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}
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func (d *MatrixDaemon) Send(message *Message, roomID ...string) (err error) {
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func (d *MatrixDaemon) Send(message *Message, users ...MatrixUser) (err error) {
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md := ""
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if message.Markdown != "" {
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// Convert images to links
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md = string(markdown.ToHTML([]byte(strings.ReplaceAll(message.Markdown, "![", "[")), nil, renderer))
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}
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for _, ident := range roomID {
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content := event.MessageEventContent{
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MsgType: "m.text",
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Body: message.Text,
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}
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if md != "" {
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_, err = d.bot.SendMessageEvent(id.RoomID(ident), event.NewEventType("m.room.message"), map[string]interface{}{
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"msgtype": "m.text",
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"body": message.Text,
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"formatted_body": md,
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"format": "org.matrix.custom.html",
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}, gomatrix.ReqSendEvent{})
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content.FormattedBody = md
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content.Format = "org.matrix.custom.html"
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}
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for _, user := range users {
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if user.Encrypted {
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err = d.SendEncrypted(&content, user)
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} else {
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_, err = d.bot.SendText(id.RoomID(ident), message.Text)
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_, err = d.bot.SendMessageEvent(id.RoomID(user.RoomID), event.NewEventType("m.room.message"), content, gomatrix.ReqSendEvent{})
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}
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if err != nil {
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return
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}
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}
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return
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}
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func (d *MatrixDaemon) SendEncrypted(content *event.MessageEventContent, users ...MatrixUser) (err error) {
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for _, user := range users {
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var encrypted *event.EncryptedEventContent
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encrypted, err = d.olm.EncryptMegolmEvent(id.RoomID(user.RoomID), event.EventMessage, content)
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if err == crypto.SessionExpired || err == crypto.SessionNotShared || err == crypto.NoGroupSession {
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err = d.olm.ShareGroupSession(id.RoomID(user.RoomID), []id.UserID{id.UserID(user.UserID)})
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if err != nil {
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return
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}
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encrypted, err = d.olm.EncryptMegolmEvent(id.RoomID(user.RoomID), event.EventMessage, content)
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}
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if err != nil {
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return
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}
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_, err = d.bot.SendMessageEvent(id.RoomID(user.RoomID), event.EventEncrypted, encrypted)
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if err != nil {
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return
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}
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Harvey Tindall
3 years ago