mirror of
https://github.com/42wim/matterbridge
synced 2024-11-07 09:20:23 +00:00
313 lines
7.9 KiB
Go
313 lines
7.9 KiB
Go
package bmatrix
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import (
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"bytes"
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"fmt"
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"mime"
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"regexp"
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"strings"
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"sync"
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"github.com/42wim/matterbridge/bridge"
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"github.com/42wim/matterbridge/bridge/config"
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"github.com/42wim/matterbridge/bridge/helper"
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matrix "github.com/matterbridge/gomatrix"
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)
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type Bmatrix struct {
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mc *matrix.Client
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UserID string
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RoomMap map[string]string
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sync.RWMutex
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*bridge.Config
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}
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func New(cfg *bridge.Config) bridge.Bridger {
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b := &Bmatrix{Config: cfg}
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b.RoomMap = make(map[string]string)
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return b
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}
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func (b *Bmatrix) Connect() error {
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var err error
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b.Log.Infof("Connecting %s", b.GetString("Server"))
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b.mc, err = matrix.NewClient(b.GetString("Server"), "", "")
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if err != nil {
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return err
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}
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resp, err := b.mc.Login(&matrix.ReqLogin{
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Type: "m.login.password",
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User: b.GetString("Login"),
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Password: b.GetString("Password"),
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})
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if err != nil {
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return err
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}
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b.mc.SetCredentials(resp.UserID, resp.AccessToken)
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b.UserID = resp.UserID
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b.Log.Info("Connection succeeded")
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go b.handlematrix()
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return nil
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}
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func (b *Bmatrix) Disconnect() error {
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return nil
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}
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func (b *Bmatrix) JoinChannel(channel config.ChannelInfo) error {
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resp, err := b.mc.JoinRoom(channel.Name, "", nil)
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if err != nil {
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return err
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}
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b.Lock()
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b.RoomMap[resp.RoomID] = channel.Name
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b.Unlock()
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return err
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}
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func (b *Bmatrix) Send(msg config.Message) (string, error) {
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b.Log.Debugf("=> Receiving %#v", msg)
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channel := b.getRoomID(msg.Channel)
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b.Log.Debugf("Channel %s maps to channel id %s", msg.Channel, channel)
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// Make a action /me of the message
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if msg.Event == config.EVENT_USER_ACTION {
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resp, err := b.mc.SendMessageEvent(channel, "m.room.message",
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matrix.TextMessage{"m.emote", msg.Username + msg.Text})
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if err != nil {
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return "", err
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}
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return resp.EventID, err
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}
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// Delete message
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if msg.Event == config.EVENT_MSG_DELETE {
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if msg.ID == "" {
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return "", nil
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}
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resp, err := b.mc.RedactEvent(channel, msg.ID, &matrix.ReqRedact{})
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if err != nil {
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return "", err
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}
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return resp.EventID, err
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}
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// Upload a file if it exists
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if msg.Extra != nil {
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for _, rmsg := range helper.HandleExtra(&msg, b.General) {
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b.mc.SendText(channel, rmsg.Username+rmsg.Text)
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}
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// check if we have files to upload (from slack, telegram or mattermost)
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if len(msg.Extra["file"]) > 0 {
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return b.handleUploadFile(&msg, channel)
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}
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}
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// Edit message if we have an ID
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// matrix has no editing support
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// Post normal message
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resp, err := b.mc.SendText(channel, msg.Username+msg.Text)
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if err != nil {
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return "", err
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}
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return resp.EventID, err
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}
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func (b *Bmatrix) getRoomID(channel string) string {
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b.RLock()
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defer b.RUnlock()
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for ID, name := range b.RoomMap {
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if name == channel {
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return ID
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}
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}
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return ""
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}
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func (b *Bmatrix) handlematrix() error {
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syncer := b.mc.Syncer.(*matrix.DefaultSyncer)
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syncer.OnEventType("m.room.redaction", b.handleEvent)
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syncer.OnEventType("m.room.message", b.handleEvent)
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go func() {
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for {
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if err := b.mc.Sync(); err != nil {
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b.Log.Println("Sync() returned ", err)
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}
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}
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}()
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return nil
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}
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func (b *Bmatrix) handleEvent(ev *matrix.Event) {
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b.Log.Debugf("== Receiving event: %#v", ev)
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if ev.Sender != b.UserID {
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b.RLock()
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channel, ok := b.RoomMap[ev.RoomID]
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b.RUnlock()
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if !ok {
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b.Log.Debugf("Unknown room %s", ev.RoomID)
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return
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}
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// TODO download avatar
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// Create our message
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rmsg := config.Message{Username: ev.Sender[1:], Channel: channel, Account: b.Account, UserID: ev.Sender, ID: ev.ID}
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// Text must be a string
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if rmsg.Text, ok = ev.Content["body"].(string); !ok {
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b.Log.Errorf("Content[body] wasn't a %T ?", rmsg.Text)
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return
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}
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// Remove homeserver suffix if configured
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if b.GetBool("NoHomeServerSuffix") {
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re := regexp.MustCompile("(.*?):.*")
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rmsg.Username = re.ReplaceAllString(rmsg.Username, `$1`)
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}
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// Delete event
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if ev.Type == "m.room.redaction" {
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rmsg.Event = config.EVENT_MSG_DELETE
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rmsg.ID = ev.Redacts
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rmsg.Text = config.EVENT_MSG_DELETE
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b.Remote <- rmsg
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return
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}
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// Do we have a /me action
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if ev.Content["msgtype"].(string) == "m.emote" {
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rmsg.Event = config.EVENT_USER_ACTION
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}
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// Do we have attachments
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if b.containsAttachment(ev.Content) {
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err := b.handleDownloadFile(&rmsg, ev.Content)
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if err != nil {
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b.Log.Errorf("download failed: %#v", err)
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}
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}
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b.Log.Debugf("<= Sending message from %s on %s to gateway", ev.Sender, b.Account)
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b.Remote <- rmsg
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}
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}
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// handleDownloadFile handles file download
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func (b *Bmatrix) handleDownloadFile(rmsg *config.Message, content map[string]interface{}) error {
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var (
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ok bool
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url, name, msgtype, mtype string
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info map[string]interface{}
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size float64
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)
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rmsg.Extra = make(map[string][]interface{})
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if url, ok = content["url"].(string); !ok {
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return fmt.Errorf("url isn't a %T", url)
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}
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url = strings.Replace(url, "mxc://", b.GetString("Server")+"/_matrix/media/v1/download/", -1)
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if info, ok = content["info"].(map[string]interface{}); !ok {
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return fmt.Errorf("info isn't a %T", info)
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}
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if size, ok = info["size"].(float64); !ok {
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return fmt.Errorf("size isn't a %T", size)
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}
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if name, ok = content["body"].(string); !ok {
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return fmt.Errorf("name isn't a %T", name)
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}
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if msgtype, ok = content["msgtype"].(string); !ok {
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return fmt.Errorf("msgtype isn't a %T", msgtype)
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}
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if mtype, ok = info["mimetype"].(string); !ok {
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return fmt.Errorf("mtype isn't a %T", mtype)
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}
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// check if we have an image uploaded without extension
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if !strings.Contains(name, ".") {
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if msgtype == "m.image" {
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mext, _ := mime.ExtensionsByType(mtype)
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if len(mext) > 0 {
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name = name + mext[0]
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}
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} else {
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// just a default .png extension if we don't have mime info
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name = name + ".png"
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}
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}
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// check if the size is ok
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err := helper.HandleDownloadSize(b.Log, rmsg, name, int64(size), b.General)
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if err != nil {
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return err
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}
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// actually download the file
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data, err := helper.DownloadFile(url)
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if err != nil {
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return fmt.Errorf("download %s failed %#v", url, err)
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}
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// add the downloaded data to the message
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helper.HandleDownloadData(b.Log, rmsg, name, "", url, data, b.General)
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return nil
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}
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// handleUploadFile handles native upload of files
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func (b *Bmatrix) handleUploadFile(msg *config.Message, channel string) (string, error) {
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for _, f := range msg.Extra["file"] {
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fi := f.(config.FileInfo)
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content := bytes.NewReader(*fi.Data)
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sp := strings.Split(fi.Name, ".")
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mtype := mime.TypeByExtension("." + sp[len(sp)-1])
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if strings.Contains(mtype, "image") ||
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strings.Contains(mtype, "video") {
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if fi.Comment != "" {
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_, err := b.mc.SendText(channel, msg.Username+fi.Comment)
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if err != nil {
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b.Log.Errorf("file comment failed: %#v", err)
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}
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}
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b.Log.Debugf("uploading file: %s %s", fi.Name, mtype)
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res, err := b.mc.UploadToContentRepo(content, mtype, int64(len(*fi.Data)))
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if err != nil {
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b.Log.Errorf("file upload failed: %#v", err)
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continue
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}
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if strings.Contains(mtype, "video") {
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b.Log.Debugf("sendVideo %s", res.ContentURI)
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_, err = b.mc.SendVideo(channel, fi.Name, res.ContentURI)
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if err != nil {
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b.Log.Errorf("sendVideo failed: %#v", err)
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}
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}
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if strings.Contains(mtype, "image") {
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b.Log.Debugf("sendImage %s", res.ContentURI)
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_, err = b.mc.SendImage(channel, fi.Name, res.ContentURI)
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if err != nil {
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b.Log.Errorf("sendImage failed: %#v", err)
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}
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}
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b.Log.Debugf("result: %#v", res)
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}
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}
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return "", nil
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}
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// skipMessages returns true if this message should not be handled
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func (b *Bmatrix) containsAttachment(content map[string]interface{}) bool {
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// Skip empty messages
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if content["msgtype"] == nil {
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return false
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}
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// Only allow image,video or file msgtypes
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if !(content["msgtype"].(string) == "m.image" ||
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content["msgtype"].(string) == "m.video" ||
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content["msgtype"].(string) == "m.file") {
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return false
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}
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return true
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}
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