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jfa-go/matrix.go

274 lines
6.7 KiB

package main
import (
"fmt"
"strings"
"time"
"github.com/gomarkdown/markdown"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/id"
)
type MatrixDaemon struct {
Stopped bool
ShutdownChannel chan string
bot *mautrix.Client
userID id.UserID
tokens map[string]UnverifiedUser // Map of tokens to users
languages map[id.RoomID]string // Map of roomIDs to language codes
Encryption bool
isEncrypted map[id.RoomID]bool
crypto Crypto
app *appContext
start int64
}
type UnverifiedUser struct {
Verified bool
User *MatrixUser
}
type MatrixUser struct {
RoomID string
Encrypted bool
UserID string
Lang string
Contact bool
}
var matrixFilter = mautrix.Filter{
Room: mautrix.RoomFilter{
Timeline: mautrix.FilterPart{
Types: []event.Type{
event.EventMessage,
event.EventEncrypted,
event.StateMember,
},
},
},
EventFields: []string{
"type",
"event_id",
"room_id",
"state_key",
"sender",
"content",
"timestamp",
// "content.body",
// "content.membership",
},
}
func newMatrixDaemon(app *appContext) (d *MatrixDaemon, err error) {
matrix := app.config.Section("matrix")
homeserver := matrix.Key("homeserver").String()
token := matrix.Key("token").String()
d = &MatrixDaemon{
ShutdownChannel: make(chan string),
userID: id.UserID(matrix.Key("user_id").String()),
tokens: map[string]UnverifiedUser{},
languages: map[id.RoomID]string{},
isEncrypted: map[id.RoomID]bool{},
app: app,
start: time.Now().UnixNano() / 1e6,
}
d.bot, err = mautrix.NewClient(homeserver, d.userID, token)
if err != nil {
return
}
// resp, err := d.bot.CreateFilter(&matrixFilter)
// if err != nil {
// return
// }
// d.bot.Store.SaveFilterID(d.userID, resp.FilterID)
for _, user := range app.storage.GetMatrix() {
if user.Lang != "" {
d.languages[id.RoomID(user.RoomID)] = user.Lang
}
d.isEncrypted[id.RoomID(user.RoomID)] = user.Encrypted
}
err = InitMatrixCrypto(d)
return
}
func (d *MatrixDaemon) generateAccessToken(homeserver, username, password string) (string, error) {
req := &mautrix.ReqLogin{
Type: mautrix.AuthTypePassword,
Identifier: mautrix.UserIdentifier{
Type: mautrix.IdentifierTypeUser,
User: username,
},
Password: password,
DeviceID: id.DeviceID("jfa-go-" + commit),
}
bot, err := mautrix.NewClient(homeserver, id.UserID(username), "")
if err != nil {
return "", err
}
resp, err := bot.Login(req)
if err != nil {
return "", err
}
return resp.AccessToken, nil
}
func (d *MatrixDaemon) run() {
startTime := d.start
d.app.info.Println("Starting Matrix bot daemon")
syncer := d.bot.Syncer.(*mautrix.DefaultSyncer)
HandleSyncerCrypto(startTime, d, syncer)
syncer.OnEventType(event.EventMessage, d.handleMessage)
if err := d.bot.Sync(); err != nil {
d.app.err.Printf("Matrix sync failed: %v", err)
}
}
func (d *MatrixDaemon) Shutdown() {
CryptoShutdown(d)
d.bot.StopSync()
d.Stopped = true
close(d.ShutdownChannel)
}
func (d *MatrixDaemon) handleMessage(source mautrix.EventSource, evt *event.Event) {
if evt.Timestamp < d.start {
return
}
if evt.Sender == d.userID {
return
}
lang := "en-us"
if l, ok := d.languages[evt.RoomID]; ok {
if _, ok := d.app.storage.lang.Telegram[l]; ok {
lang = l
}
}
sects := strings.Split(evt.Content.Raw["body"].(string), " ")
switch sects[0] {
case "!lang":
if len(sects) == 2 {
d.commandLang(evt, sects[1], lang)
} else {
d.commandLang(evt, "", lang)
}
}
}
func (d *MatrixDaemon) commandLang(evt *event.Event, code, lang string) {
if code == "" {
list := "!lang <lang>\n"
for c := range d.app.storage.lang.Telegram {
list += fmt.Sprintf("%s: %s\n", c, d.app.storage.lang.Telegram[c].Meta.Name)
}
_, err := d.bot.SendText(
evt.RoomID,
list,
)
if err != nil {
d.app.err.Printf("Matrix: Failed to send message to \"%s\": %v", evt.Sender, err)
}
return
}
if _, ok := d.app.storage.lang.Telegram[code]; !ok {
return
}
d.languages[evt.RoomID] = code
if u, ok := d.app.storage.GetMatrixKey(string(evt.RoomID)); ok {
u.Lang = code
d.app.storage.SetMatrixKey(string(evt.RoomID), u)
}
}
func (d *MatrixDaemon) CreateRoom(userID string) (roomID id.RoomID, encrypted bool, err error) {
var room *mautrix.RespCreateRoom
room, err = d.bot.CreateRoom(&mautrix.ReqCreateRoom{
Visibility: "private",
Invite: []id.UserID{id.UserID(userID)},
Topic: d.app.config.Section("matrix").Key("topic").String(),
IsDirect: true,
})
if err != nil {
return
}
encrypted = EncryptRoom(d, room, id.UserID(userID))
roomID = room.RoomID
return
}
func (d *MatrixDaemon) SendStart(userID string) (ok bool) {
roomID, encrypted, err := d.CreateRoom(userID)
if err != nil {
d.app.err.Printf("Failed to create room for user \"%s\": %v", userID, err)
return
}
lang := "en-us"
pin := genAuthToken()
d.tokens[pin] = UnverifiedUser{
false,
&MatrixUser{
RoomID: string(roomID),
UserID: userID,
Lang: lang,
Encrypted: encrypted,
},
}
err = d.sendToRoom(
&event.MessageEventContent{
MsgType: event.MsgText,
Body: d.app.storage.lang.Telegram[lang].Strings.get("matrixStartMessage") + "\n\n" + pin + "\n\n" +
d.app.storage.lang.Telegram[lang].Strings.template("languageMessage", tmpl{"command": "!lang"}),
},
roomID,
)
if err != nil {
d.app.err.Printf("Matrix: Failed to send welcome message to \"%s\": %v", userID, err)
return
}
ok = true
return
}
func (d *MatrixDaemon) sendToRoom(content *event.MessageEventContent, roomID id.RoomID) (err error) {
if encrypted, ok := d.isEncrypted[roomID]; ok && encrypted {
err = SendEncrypted(d, content, roomID)
} else {
_, err = d.bot.SendMessageEvent(roomID, event.EventMessage, content, mautrix.ReqSendEvent{})
}
return
}
func (d *MatrixDaemon) send(content *event.MessageEventContent, roomID id.RoomID) (err error) {
_, err = d.bot.SendMessageEvent(roomID, event.EventMessage, content, mautrix.ReqSendEvent{})
return
}
func (d *MatrixDaemon) Send(message *Message, users ...MatrixUser) (err error) {
md := ""
if message.Markdown != "" {
// Convert images to links
md = string(markdown.ToHTML([]byte(strings.ReplaceAll(message.Markdown, "![", "[")), nil, renderer))
}
content := &event.MessageEventContent{
MsgType: "m.text",
Body: message.Text,
}
if md != "" {
content.FormattedBody = md
content.Format = "org.matrix.custom.html"
}
for _, user := range users {
err = d.sendToRoom(content, id.RoomID(user.RoomID))
if err != nil {
return
}
}
return
}
// User enters ID on sign-up, a PIN is sent to them. They enter it on sign-up.
// Message the user first, to avoid E2EE by default