// gomuks - A terminal Matrix client written in Go. // Copyright (C) 2020 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 matrix import ( "context" "crypto/tls" "encoding/gob" "encoding/json" "fmt" "io" "io/ioutil" "net/http" "os" "path" "path/filepath" "reflect" "runtime" dbg "runtime/debug" "time" "github.com/pkg/errors" "maunium.net/go/mautrix" "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/pushrules" "maunium.net/go/gomuks/config" "maunium.net/go/gomuks/debug" "maunium.net/go/gomuks/interface" "maunium.net/go/gomuks/lib/open" "maunium.net/go/gomuks/matrix/muksevt" "maunium.net/go/gomuks/matrix/rooms" ) // Container is a wrapper for a mautrix Client and some other stuff. // // It is used for all Matrix calls from the UI and Matrix event handlers. type Container struct { client *mautrix.Client crypto CryptoInterface syncer *GomuksSyncer gmx ifc.Gomuks ui ifc.GomuksUI config *config.Config history *HistoryManager running bool stop chan bool typing int64 } // NewContainer creates a new Container for the given Gomuks instance. func NewContainer(gmx ifc.Gomuks) *Container { c := &Container{ config: gmx.Config(), ui: gmx.UI(), gmx: gmx, } return c } // Client returns the underlying mautrix Client. func (c *Container) Client() *mautrix.Client { return c.client } type mxLogger struct{} func (log mxLogger) Debugfln(message string, args ...interface{}) { debug.Printf("[Matrix] "+message, args...) } type CryptoInterface interface { Load() error FlushStore() error ProcessSyncResponse(resp *mautrix.RespSync, since string) HandleMemberEvent(*event.Event) DecryptMegolmEvent(*event.Event) (*event.Event, error) EncryptMegolmEvent(id.RoomID, event.Type, event.Content) (*event.EncryptedEventContent, error) ShareGroupSession(id.RoomID, []id.UserID) error } // InitClient initializes the mautrix client and connects to the homeserver specified in the config. func (c *Container) InitClient() error { if len(c.config.HS) == 0 { return fmt.Errorf("no homeserver entered") } if c.client != nil { c.Stop() c.client = nil c.crypto = nil } var mxid id.UserID var accessToken string if len(c.config.AccessToken) > 0 { accessToken = c.config.AccessToken mxid = c.config.UserID } var err error c.client, err = mautrix.NewClient(c.config.HS, mxid, accessToken) if err != nil { return err } c.client.Logger = mxLogger{} c.client.DeviceID = c.config.DeviceID err = c.initCrypto() if err != nil { return err } if c.history == nil { c.history, err = NewHistoryManager(c.config.HistoryPath) if err != nil { return errors.Wrap(err, "failed to initialize history") } } allowInsecure := len(os.Getenv("GOMUKS_ALLOW_INSECURE_CONNECTIONS")) > 0 if allowInsecure { c.client.Client = &http.Client{ Transport: &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}, } } c.stop = make(chan bool, 1) if len(accessToken) > 0 { go c.Start() } return nil } // Initialized returns whether or not the mautrix client is initialized (see InitClient()) func (c *Container) Initialized() bool { return c.client != nil } func (c *Container) PasswordLogin(user, password string) error { resp, err := c.client.Login(&mautrix.ReqLogin{ Type: "m.login.password", Identifier: mautrix.UserIdentifier{ Type: "m.id.user", User: user, }, Password: password, InitialDeviceDisplayName: "gomuks", }) if err != nil { return err } c.finishLogin(resp) return nil } func (c *Container) finishLogin(resp *mautrix.RespLogin) { c.client.SetCredentials(resp.UserID, resp.AccessToken) c.client.DeviceID = resp.DeviceID c.config.UserID = resp.UserID c.config.DeviceID = resp.DeviceID c.config.AccessToken = resp.AccessToken c.config.Save() go c.Start() } func respondHTML(w http.ResponseWriter, status int, message string) { w.Header().Add("Content-Type", "text/html") w.WriteHeader(status) _, _ = w.Write([]byte(fmt.Sprintf(` gomuks single-sign on

%s

`, message))) } func (c *Container) SingleSignOn() error { loginURL := c.client.BuildURLWithQuery(mautrix.URLPath{"login", "sso", "redirect"}, map[string]string{ "redirectUrl": "http://localhost:29325", }) err := open.Open(loginURL) if err != nil { return err } errChan := make(chan error, 1) server := &http.Server{Addr: ":29325"} server.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { loginToken := r.URL.Query().Get("loginToken") if len(loginToken) == 0 { respondHTML(w, http.StatusBadRequest, "Missing loginToken parameter") return } resp, err := c.client.Login(&mautrix.ReqLogin{ Type: "m.login.token", Token: loginToken, InitialDeviceDisplayName: "gomuks", }) if err != nil { respondHTML(w, http.StatusForbidden, err.Error()) errChan <- err return } respondHTML(w, http.StatusOK, fmt.Sprintf("Successfully logged in as %s", resp.UserID)) c.finishLogin(resp) go func() { ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() err = server.Shutdown(ctx) if err != nil { debug.Printf("Failed to shut down SSO server: %v\n", err) } errChan <- err }() }) err = server.ListenAndServe() if err != nil { return err } err = <-errChan return err } // Login sends a password login request with the given username and password. func (c *Container) Login(user, password string) error { resp, err := c.client.GetLoginFlows() if err != nil { return err } if len(resp.Flows) == 1 && resp.Flows[0].Type == "m.login.password" { return c.PasswordLogin(user, password) } else if len(resp.Flows) == 2 && resp.Flows[0].Type == "m.login.sso" && resp.Flows[1].Type == "m.login.token" { return c.SingleSignOn() } else { return fmt.Errorf("no supported login flows") } } // Logout revokes the access token, stops the syncer and calls the OnLogout() method of the UI. func (c *Container) Logout() { c.client.Logout() c.Stop() c.config.DeleteSession() c.client = nil c.crypto = nil c.ui.OnLogout() } // Stop stops the Matrix syncer. func (c *Container) Stop() { if c.running { debug.Print("Stopping Matrix container...") c.stop <- true c.client.StopSync() debug.Print("Closing history manager...") err := c.history.Close() if err != nil { debug.Print("Error closing history manager:", err) } c.history = nil if c.crypto != nil { debug.Print("Flushing crypto store") err = c.crypto.FlushStore() if err != nil { debug.Print("Error flushing crypto store:", err) } } } } // UpdatePushRules fetches the push notification rules from the server and stores them in the current Session object. func (c *Container) UpdatePushRules() { debug.Print("Updating push rules...") resp, err := c.client.GetPushRules() if err != nil { debug.Print("Failed to fetch push rules:", err) c.config.PushRules = &pushrules.PushRuleset{} } else { c.config.PushRules = resp } c.config.SavePushRules() } // PushRules returns the push notification rules. If no push rules are cached, UpdatePushRules() will be called first. func (c *Container) PushRules() *pushrules.PushRuleset { if c.config.PushRules == nil { c.UpdatePushRules() } return c.config.PushRules } var AccountDataGomuksPreferences = event.Type{ Type: "net.maunium.gomuks.preferences", Class: event.AccountDataEventType, } func init() { event.TypeMap[AccountDataGomuksPreferences] = reflect.TypeOf(config.UserPreferences{}) gob.Register(&config.UserPreferences{}) } type StubSyncingModal struct{} func (s StubSyncingModal) SetIndeterminate() {} func (s StubSyncingModal) SetMessage(s2 string) {} func (s StubSyncingModal) SetSteps(i int) {} func (s StubSyncingModal) Step() {} func (s StubSyncingModal) Close() {} // OnLogin initializes the syncer and updates the room list. func (c *Container) OnLogin() { c.ui.OnLogin() c.client.Store = c.config debug.Print("Initializing syncer") c.syncer = NewGomuksSyncer(c.config.Rooms) if c.crypto != nil { c.syncer.OnSync(c.crypto.ProcessSyncResponse) c.syncer.OnEventType(event.StateMember, func(source EventSource, evt *event.Event) { c.crypto.HandleMemberEvent(evt) }) c.syncer.OnEventType(event.EventEncrypted, c.HandleEncrypted) } else { c.syncer.OnEventType(event.EventEncrypted, c.HandleMessage) } c.syncer.OnEventType(event.EventMessage, c.HandleMessage) c.syncer.OnEventType(event.EventSticker, c.HandleMessage) c.syncer.OnEventType(event.EventReaction, c.HandleMessage) c.syncer.OnEventType(event.EventRedaction, c.HandleRedaction) c.syncer.OnEventType(event.StateAliases, c.HandleMessage) c.syncer.OnEventType(event.StateCanonicalAlias, c.HandleMessage) c.syncer.OnEventType(event.StateTopic, c.HandleMessage) c.syncer.OnEventType(event.StateRoomName, c.HandleMessage) c.syncer.OnEventType(event.StateMember, c.HandleMembership) c.syncer.OnEventType(event.EphemeralEventReceipt, c.HandleReadReceipt) c.syncer.OnEventType(event.EphemeralEventTyping, c.HandleTyping) c.syncer.OnEventType(event.AccountDataDirectChats, c.HandleDirectChatInfo) c.syncer.OnEventType(event.AccountDataPushRules, c.HandlePushRules) c.syncer.OnEventType(event.AccountDataRoomTags, c.HandleTag) c.syncer.OnEventType(AccountDataGomuksPreferences, c.HandlePreferences) if len(c.config.AuthCache.NextBatch) == 0 { c.syncer.Progress = c.ui.MainView().OpenSyncingModal() c.syncer.Progress.SetMessage("Waiting for /sync response from server") c.syncer.Progress.SetIndeterminate() c.syncer.FirstDoneCallback = func() { c.syncer.Progress.Close() c.syncer.Progress = StubSyncingModal{} c.syncer.FirstDoneCallback = nil } } c.syncer.InitDoneCallback = func() { debug.Print("Initial sync done") c.config.AuthCache.InitialSyncDone = true debug.Print("Updating title caches") for _, room := range c.config.Rooms.Map { room.GetTitle() } debug.Print("Cleaning cached rooms from memory") c.config.Rooms.ForceClean() debug.Print("Saving all data") c.config.SaveAll() debug.Print("Adding rooms to UI") c.ui.MainView().SetRooms(c.config.Rooms) c.ui.Render() // The initial sync can be a bit heavy, so we force run the GC here // after cleaning up rooms from memory above. debug.Print("Running GC") runtime.GC() dbg.FreeOSMemory() } c.client.Syncer = c.syncer debug.Print("Setting existing rooms") c.ui.MainView().SetRooms(c.config.Rooms) debug.Print("OnLogin() done.") } // Start moves the UI to the main view, calls OnLogin() and runs the syncer forever until stopped with Stop() func (c *Container) Start() { defer debug.Recover() c.OnLogin() if c.client == nil { return } debug.Print("Starting sync...") c.running = true for { select { case <-c.stop: debug.Print("Stopping sync...") c.running = false return default: if err := c.client.Sync(); err != nil { if httpErr, ok := err.(mautrix.HTTPError); ok && httpErr.Code == http.StatusUnauthorized { debug.Print("Sync() errored with ", err, " -> logging out") c.Logout() } else { debug.Print("Sync() errored", err) } } else { debug.Print("Sync() returned without error") } } } } func (c *Container) HandlePreferences(source EventSource, evt *event.Event) { if source&EventSourceAccountData == 0 { return } orig := c.config.Preferences err := json.Unmarshal(evt.Content.VeryRaw, &c.config.Preferences) if err != nil { debug.Print("Failed to parse updated preferences:", err) return } debug.Print("Updated preferences:", orig, "->", c.config.Preferences) if c.config.AuthCache.InitialSyncDone { c.ui.HandleNewPreferences() } } func (c *Container) Preferences() *config.UserPreferences { return &c.config.Preferences } func (c *Container) SendPreferencesToMatrix() { defer debug.Recover() debug.Print("Sending updated preferences:", c.config.Preferences) u := c.client.BuildURL("user", string(c.config.UserID), "account_data", AccountDataGomuksPreferences.Type) _, err := c.client.MakeRequest("PUT", u, &c.config.Preferences, nil) if err != nil { debug.Print("Failed to update preferences:", err) } } func (c *Container) HandleRedaction(source EventSource, evt *event.Event) { room := c.GetOrCreateRoom(evt.RoomID) var redactedEvt *muksevt.Event err := c.history.Update(room, evt.Redacts, func(redacted *muksevt.Event) error { redacted.Unsigned.RedactedBecause = evt redactedEvt = redacted return nil }) if err != nil { debug.Print("Failed to mark", evt.Redacts, "as redacted:", err) return } else if !c.config.AuthCache.InitialSyncDone || !room.Loaded() { return } roomView := c.ui.MainView().GetRoom(evt.RoomID) if roomView == nil { debug.Printf("Failed to handle event %v: No room view found.", evt) return } roomView.AddRedaction(redactedEvt) if c.syncer.FirstSyncDone { c.ui.Render() } } func (c *Container) HandleEdit(room *rooms.Room, editsID id.EventID, editEvent *muksevt.Event) { var origEvt *muksevt.Event err := c.history.Update(room, editsID, func(evt *muksevt.Event) error { evt.Gomuks.Edits = append(evt.Gomuks.Edits, editEvent) origEvt = evt return nil }) if err != nil { debug.Print("Failed to store edit in history db:", err) return } else if !c.config.AuthCache.InitialSyncDone || !room.Loaded() { return } roomView := c.ui.MainView().GetRoom(editEvent.RoomID) if roomView == nil { debug.Printf("Failed to handle edit event %v: No room view found.", editEvent) return } roomView.AddEdit(origEvt) if c.syncer.FirstSyncDone { c.ui.Render() } } func (c *Container) HandleReaction(room *rooms.Room, reactsTo id.EventID, reactEvent *muksevt.Event) { rel := reactEvent.Content.AsReaction().RelatesTo var origEvt *muksevt.Event err := c.history.Update(room, reactsTo, func(evt *muksevt.Event) error { if evt.Unsigned.Relations.Annotations.Map == nil { evt.Unsigned.Relations.Annotations.Map = make(map[string]int) } val, _ := evt.Unsigned.Relations.Annotations.Map[rel.Key] evt.Unsigned.Relations.Annotations.Map[rel.Key] = val + 1 origEvt = evt return nil }) if err != nil { debug.Print("Failed to store reaction in history db:", err) return } else if !c.config.AuthCache.InitialSyncDone || !room.Loaded() { return } roomView := c.ui.MainView().GetRoom(reactEvent.RoomID) if roomView == nil { debug.Printf("Failed to handle edit event %v: No room view found.", reactEvent) return } roomView.AddReaction(origEvt, rel.Key) if c.syncer.FirstSyncDone { c.ui.Render() } } func (c *Container) HandleEncrypted(source EventSource, mxEvent *event.Event) { evt, err := c.crypto.DecryptMegolmEvent(mxEvent) if err != nil { debug.Print("Failed to decrypt event:", err) // TODO add decryption failed message instead of passing through directly c.HandleMessage(source, mxEvent) return } c.HandleMessage(source, evt) } // HandleMessage is the event handler for the m.room.message timeline event. func (c *Container) HandleMessage(source EventSource, mxEvent *event.Event) { room := c.GetOrCreateRoom(mxEvent.RoomID) if source&EventSourceLeave != 0 { room.HasLeft = true return } else if source&EventSourceState != 0 { return } relatable, ok := mxEvent.Content.Parsed.(event.Relatable) if ok { rel := relatable.GetRelatesTo() if editID := rel.GetReplaceID(); len(editID) > 0 { c.HandleEdit(room, editID, muksevt.Wrap(mxEvent)) return } else if reactionID := rel.GetAnnotationID(); mxEvent.Type == event.EventReaction && len(reactionID) > 0 { c.HandleReaction(room, reactionID, muksevt.Wrap(mxEvent)) return } } events, err := c.history.Append(room, []*event.Event{mxEvent}) if err != nil { debug.Printf("Failed to add event %s to history: %v", mxEvent.ID, err) } evt := events[0] if !c.config.AuthCache.InitialSyncDone { room.LastReceivedMessage = time.Unix(evt.Timestamp/1000, evt.Timestamp%1000*1000) return } mainView := c.ui.MainView() roomView := mainView.GetRoom(evt.RoomID) if roomView == nil { debug.Printf("Failed to handle event %v: No room view found.", evt) return } if !room.Loaded() { pushRules := c.PushRules().GetActions(room, evt.Event).Should() shouldNotify := pushRules.Notify || !pushRules.NotifySpecified if !shouldNotify { room.LastReceivedMessage = time.Unix(evt.Timestamp/1000, evt.Timestamp%1000*1000) room.AddUnread(evt.ID, shouldNotify, pushRules.Highlight) mainView.Bump(room) return } } message := roomView.AddEvent(evt) if message != nil { roomView.MxRoom().LastReceivedMessage = message.Time() if c.syncer.FirstSyncDone && evt.Sender != c.config.UserID { pushRules := c.PushRules().GetActions(roomView.MxRoom(), evt.Event).Should() mainView.NotifyMessage(roomView.MxRoom(), message, pushRules) c.ui.Render() } } else { debug.Printf("Parsing event %s type %s %v from %s in %s failed (ParseEvent() returned nil).", evt.ID, evt.Type.Repr(), evt.Content.Raw, evt.Sender, evt.RoomID) } } // HandleMembership is the event handler for the m.room.member state event. func (c *Container) HandleMembership(source EventSource, evt *event.Event) { isLeave := source&EventSourceLeave != 0 isTimeline := source&EventSourceTimeline != 0 if isLeave { c.GetOrCreateRoom(evt.RoomID).HasLeft = true } isNonTimelineLeave := isLeave && !isTimeline if !c.config.AuthCache.InitialSyncDone && isNonTimelineLeave { return } else if evt.StateKey != nil && id.UserID(*evt.StateKey) == c.config.UserID { c.processOwnMembershipChange(evt) } else if !isTimeline && (!c.config.AuthCache.InitialSyncDone || isLeave) { // We don't care about other users' membership events in the initial sync or chats we've left. return } c.HandleMessage(source, evt) } func (c *Container) processOwnMembershipChange(evt *event.Event) { membership := evt.Content.AsMember().Membership prevMembership := event.MembershipLeave if evt.Unsigned.PrevContent != nil { prevMembership = evt.Unsigned.PrevContent.AsMember().Membership } debug.Printf("Processing own membership change: %s->%s in %s", prevMembership, membership, evt.RoomID) if membership == prevMembership { return } room := c.GetRoom(evt.RoomID) switch membership { case "join": room.HasLeft = false if c.config.AuthCache.InitialSyncDone { c.ui.MainView().UpdateTags(room) } fallthrough case "invite": if c.config.AuthCache.InitialSyncDone { c.ui.MainView().AddRoom(room) } case "leave": case "ban": if c.config.AuthCache.InitialSyncDone { c.ui.MainView().RemoveRoom(room) } room.HasLeft = true room.Unload() default: return } c.ui.Render() } func (c *Container) parseReadReceipt(evt *event.Event) (largestTimestampEvent id.EventID) { var largestTimestamp int64 for eventID, rawContent := range evt.Content.Raw { content, ok := rawContent.(map[string]interface{}) if !ok { continue } mRead, ok := content["m.read"].(map[string]interface{}) if !ok { continue } myInfo, ok := mRead[string(c.config.UserID)].(map[string]interface{}) if !ok { continue } ts, ok := myInfo["ts"].(float64) if int64(ts) > largestTimestamp { largestTimestamp = int64(ts) largestTimestampEvent = id.EventID(eventID) } } return } func (c *Container) HandleReadReceipt(source EventSource, evt *event.Event) { if source&EventSourceLeave != 0 { return } lastReadEvent := c.parseReadReceipt(evt) if len(lastReadEvent) == 0 { return } room := c.GetRoom(evt.RoomID) if room != nil { room.MarkRead(lastReadEvent) if c.config.AuthCache.InitialSyncDone { c.ui.Render() } } } func (c *Container) parseDirectChatInfo(evt *event.Event) map[*rooms.Room]bool { directChats := make(map[*rooms.Room]bool) for _, rawRoomIDList := range evt.Content.Raw { roomIDList, ok := rawRoomIDList.([]interface{}) if !ok { continue } for _, rawRoomID := range roomIDList { roomID, ok := rawRoomID.(string) if !ok { continue } room := c.GetOrCreateRoom(id.RoomID(roomID)) if room != nil && !room.HasLeft { directChats[room] = true } } } return directChats } func (c *Container) HandleDirectChatInfo(_ EventSource, evt *event.Event) { directChats := c.parseDirectChatInfo(evt) for _, room := range c.config.Rooms.Map { shouldBeDirect := directChats[room] if shouldBeDirect != room.IsDirect { room.IsDirect = shouldBeDirect if c.config.AuthCache.InitialSyncDone { c.ui.MainView().UpdateTags(room) } } } } // HandlePushRules is the event handler for the m.push_rules account data event. func (c *Container) HandlePushRules(_ EventSource, evt *event.Event) { debug.Print("Received updated push rules") var err error c.config.PushRules, err = pushrules.EventToPushRules(evt) if err != nil { debug.Print("Failed to convert event to push rules:", err) return } c.config.SavePushRules() } // HandleTag is the event handler for the m.tag account data event. func (c *Container) HandleTag(_ EventSource, evt *event.Event) { room := c.GetOrCreateRoom(evt.RoomID) tags := evt.Content.AsTag().Tags newTags := make([]rooms.RoomTag, len(tags)) index := 0 for tag, info := range tags { order := json.Number("0.5") if len(info.Order) > 0 { order = info.Order } newTags[index] = rooms.RoomTag{ Tag: tag, Order: order, } index++ } room.RawTags = newTags if c.config.AuthCache.InitialSyncDone { mainView := c.ui.MainView() mainView.UpdateTags(room) } } // HandleTyping is the event handler for the m.typing event. func (c *Container) HandleTyping(_ EventSource, evt *event.Event) { if !c.config.AuthCache.InitialSyncDone { return } c.ui.MainView().SetTyping(evt.RoomID, evt.Content.AsTyping().UserIDs) } func (c *Container) MarkRead(roomID id.RoomID, eventID id.EventID) { urlPath := c.client.BuildURL("rooms", roomID, "receipt", "m.read", eventID) _, _ = c.client.MakeRequest("POST", urlPath, struct{}{}, nil) } func (c *Container) PrepareMarkdownMessage(roomID id.RoomID, msgtype event.MessageType, text, html string, rel *ifc.Relation) *muksevt.Event { var content event.MessageEventContent if html != "" { content = event.MessageEventContent{ FormattedBody: html, Format: event.FormatHTML, Body: text, MsgType: msgtype, } } else { content = format.RenderMarkdown(text, !c.config.Preferences.DisableMarkdown, !c.config.Preferences.DisableHTML) content.MsgType = msgtype } if rel != nil && rel.Type == event.RelReplace { contentCopy := content content.NewContent = &contentCopy content.Body = "* " + content.Body if len(content.FormattedBody) > 0 { content.FormattedBody = "* " + content.FormattedBody } content.RelatesTo = &event.RelatesTo{ Type: event.RelReplace, EventID: rel.Event.ID, } } else if rel != nil && rel.Type == event.RelReference { content.SetReply(rel.Event.Event) } txnID := c.client.TxnID() localEcho := muksevt.Wrap(&event.Event{ ID: id.EventID(txnID), Sender: c.config.UserID, Type: event.EventMessage, Timestamp: time.Now().UnixNano() / 1e6, RoomID: roomID, Content: event.Content{Parsed: &content}, Unsigned: event.Unsigned{TransactionID: txnID}, }) localEcho.Gomuks.OutgoingState = muksevt.StateLocalEcho if rel != nil && rel.Type == event.RelReplace { localEcho.ID = rel.Event.ID localEcho.Gomuks.Edits = []*muksevt.Event{localEcho} } return localEcho } func (c *Container) Redact(roomID id.RoomID, eventID id.EventID, reason string) error { defer debug.Recover() _, err := c.client.RedactEvent(roomID, eventID, mautrix.ReqRedact{Reason: reason}) return err } // SendMessage sends the given event. func (c *Container) SendEvent(evt *muksevt.Event) (id.EventID, error) { defer debug.Recover() _, _ = c.client.UserTyping(evt.RoomID, false, 0) c.typing = 0 room := c.GetRoom(evt.RoomID) if room != nil && room.Encrypted && c.crypto != nil && evt.Type != event.EventReaction { encrypted, err := c.crypto.EncryptMegolmEvent(evt.RoomID, evt.Type, evt.Content) if err != nil { if isBadEncryptError(err) { return "", err } debug.Print("Got", err, "while trying to encrypt message, sharing group session and trying again...") err = c.crypto.ShareGroupSession(room.ID, room.GetMemberList()) if err != nil { return "", err } encrypted, err = c.crypto.EncryptMegolmEvent(evt.RoomID, evt.Type, evt.Content) if err != nil { return "", err } } evt.Type = event.EventEncrypted evt.Content = event.Content{Parsed: encrypted} } resp, err := c.client.SendMessageEvent(evt.RoomID, evt.Type, &evt.Content, mautrix.ReqSendEvent{TransactionID: evt.Unsigned.TransactionID}) if err != nil { return "", err } return resp.EventID, nil } func (c *Container) sendTypingAsync(roomID id.RoomID, typing bool, timeout int64) { defer debug.Recover() _, _ = c.client.UserTyping(roomID, typing, timeout) } // SendTyping sets whether or not the user is typing in the given room. func (c *Container) SendTyping(roomID id.RoomID, typing bool) { ts := time.Now().Unix() if (c.typing > ts && typing) || (c.typing == 0 && !typing) { return } if typing { go c.sendTypingAsync(roomID, true, 20000) c.typing = ts + 15 } else { go c.sendTypingAsync(roomID, false, 0) c.typing = 0 } } // CreateRoom attempts to create a new room and join the user. func (c *Container) CreateRoom(req *mautrix.ReqCreateRoom) (*rooms.Room, error) { resp, err := c.client.CreateRoom(req) if err != nil { return nil, err } room := c.GetOrCreateRoom(resp.RoomID) return room, nil } // JoinRoom makes the current user try to join the given room. func (c *Container) JoinRoom(roomID id.RoomID, server string) (*rooms.Room, error) { resp, err := c.client.JoinRoom(string(roomID), server, nil) if err != nil { return nil, err } room := c.GetOrCreateRoom(resp.RoomID) room.HasLeft = false return room, nil } // LeaveRoom makes the current user leave the given room. func (c *Container) LeaveRoom(roomID id.RoomID) error { _, err := c.client.LeaveRoom(roomID) if err != nil { return err } node := c.GetOrCreateRoom(roomID) node.HasLeft = true node.Unload() return nil } func (c *Container) FetchMembers(room *rooms.Room) error { debug.Print("Fetching member list for", room.ID) members, err := c.client.Members(room.ID, mautrix.ReqMembers{At: room.LastPrevBatch}) if err != nil { return err } debug.Printf("Fetched %d members for %s", len(members.Chunk), room.ID) for _, evt := range members.Chunk { err := evt.Content.ParseRaw(evt.Type) if err != nil { debug.Printf("Failed to parse member event of %s: %v", evt.GetStateKey(), err) continue } room.UpdateState(evt) } room.MembersFetched = true return nil } // GetHistory fetches room history. func (c *Container) GetHistory(room *rooms.Room, limit int) ([]*muksevt.Event, error) { events, err := c.history.Load(room, limit) if err != nil { return nil, err } if len(events) > 0 { debug.Printf("Loaded %d events for %s from local cache", len(events), room.ID) return events, nil } resp, err := c.client.Messages(room.ID, room.PrevBatch, "", 'b', limit) if err != nil { return nil, err } debug.Printf("Loaded %d events for %s from server from %s to %s", len(resp.Chunk), room.ID, resp.Start, resp.End) for i, evt := range resp.Chunk { err := evt.Content.ParseRaw(evt.Type) if err != nil { debug.Printf("Failed to unmarshal content of event %s (type %s) by %s in %s: %v\n%s", evt.ID, evt.Type.Repr(), evt.Sender, evt.RoomID, err, string(evt.Content.VeryRaw)) } if c.crypto != nil && evt.Type == event.EventEncrypted { decrypted, err := c.crypto.DecryptMegolmEvent(evt) if err != nil { debug.Print("Failed to decrypt event:", err) // TODO add decryption failed message instead of passing through directly } else { resp.Chunk[i] = decrypted } } } for _, evt := range resp.State { room.UpdateState(evt) } room.PrevBatch = resp.End c.config.Rooms.Put(room) if len(resp.Chunk) == 0 { return []*muksevt.Event{}, nil } events, err = c.history.Prepend(room, resp.Chunk) if err != nil { return nil, err } return events, nil } func (c *Container) GetEvent(room *rooms.Room, eventID id.EventID) (*muksevt.Event, error) { evt, err := c.history.Get(room, eventID) if err != nil && err != EventNotFoundError { debug.Printf("Failed to get event %s from local cache: %v", eventID, err) } else if evt != nil { debug.Printf("Found event %s in local cache", eventID) return evt, err } mxEvent, err := c.client.GetEvent(room.ID, eventID) if err != nil { return nil, err } evt = muksevt.Wrap(mxEvent) debug.Printf("Loaded event %s from server", eventID) return evt, nil } // GetOrCreateRoom gets the room instance stored in the session. func (c *Container) GetOrCreateRoom(roomID id.RoomID) *rooms.Room { return c.config.Rooms.GetOrCreate(roomID) } // GetRoom gets the room instance stored in the session. func (c *Container) GetRoom(roomID id.RoomID) *rooms.Room { return c.config.Rooms.Get(roomID) } func cp(src, dst string) error { in, err := os.Open(src) if err != nil { return err } defer in.Close() out, err := os.Create(dst) if err != nil { return err } defer out.Close() _, err = io.Copy(out, in) if err != nil { return err } return out.Close() } func (c *Container) DownloadToDisk(uri id.ContentURI, file *attachment.EncryptedFile, target string) (fullPath string, err error) { cachePath := c.GetCachePath(uri) if target == "" { fullPath = cachePath } else if !path.IsAbs(target) { fullPath = path.Join(c.config.DownloadDir, target) } else { fullPath = target } if _, statErr := os.Stat(cachePath); os.IsNotExist(statErr) { var body io.ReadCloser body, err = c.client.Download(uri) if err != nil { return } var data []byte data, err = ioutil.ReadAll(body) _ = body.Close() if err != nil { return } if file != nil { data, err = file.Decrypt(data) if err != nil { return } } err = ioutil.WriteFile(cachePath, data, 0600) if err != nil { return } } if fullPath != cachePath { err = os.MkdirAll(path.Dir(fullPath), 0700) if err != nil { return } err = cp(cachePath, fullPath) } return } // Download fetches the given Matrix content (mxc) URL and returns the data, homeserver, file ID and potential errors. // // The file will be either read from the media cache (if found) or downloaded from the server. func (c *Container) Download(uri id.ContentURI, file *attachment.EncryptedFile) (data []byte, err error) { cacheFile := c.GetCachePath(uri) var info os.FileInfo if info, err = os.Stat(cacheFile); err == nil && !info.IsDir() { data, err = ioutil.ReadFile(cacheFile) if err == nil { return } } data, err = c.download(uri, file, cacheFile) return } func (c *Container) GetDownloadURL(uri id.ContentURI) string { return c.client.GetDownloadURL(uri) } func (c *Container) download(uri id.ContentURI, file *attachment.EncryptedFile, cacheFile string) (data []byte, err error) { var body io.ReadCloser body, err = c.client.Download(uri) if err != nil { return } data, err = ioutil.ReadAll(body) _ = body.Close() if err != nil { return } if file != nil { data, err = file.Decrypt(data) if err != nil { return } } err = ioutil.WriteFile(cacheFile, data, 0600) return } // GetCachePath gets the path to the cached version of the given homeserver:fileID combination. // The file may or may not exist, use Download() to ensure it has been cached. func (c *Container) GetCachePath(uri id.ContentURI) string { dir := filepath.Join(c.config.MediaDir, uri.Homeserver) err := os.MkdirAll(dir, 0700) if err != nil { return "" } return filepath.Join(dir, uri.FileID) }