mautrix-whatsapp/custompuppet.go
Tulir Asokan 2c9c473040 Add basic Matrix puppeting support
May contain bugs.
EDUs from /sync are not yet handled.
2019-05-24 02:33:30 +03:00

168 lines
4.5 KiB
Go

// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2019 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 <https://www.gnu.org/licenses/>.
package main
import (
"encoding/json"
"fmt"
"strings"
"time"
"github.com/pkg/errors"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix-appservice"
)
var (
ErrNoCustomMXID = errors.New("no custom mxid set")
ErrMismatchingMXID = errors.New("whoami result does not match custom mxid")
)
func (puppet *Puppet) SwitchCustomMXID(accessToken string, mxid string) error {
prevCustomMXID := puppet.CustomMXID
if puppet.customIntent != nil {
puppet.stopSyncing()
}
puppet.CustomMXID = mxid
puppet.AccessToken = accessToken
err := puppet.StartCustomMXID()
if err != nil {
return err
}
if len(prevCustomMXID) > 0 {
delete(puppet.bridge.puppetsByCustomMXID, prevCustomMXID)
}
if len(puppet.CustomMXID) > 0 {
puppet.bridge.puppetsByCustomMXID[puppet.CustomMXID] = puppet
}
puppet.Update()
// TODO leave rooms with default puppet
return nil
}
func (puppet *Puppet) newCustomIntent() (*appservice.IntentAPI, error) {
if len(puppet.CustomMXID) == 0 {
return nil, ErrNoCustomMXID
}
client, err := mautrix.NewClient(puppet.bridge.AS.HomeserverURL, puppet.CustomMXID, puppet.AccessToken)
if err != nil {
return nil, err
}
client.Store = puppet
ia := puppet.bridge.AS.NewIntentAPI("custom")
ia.Client = client
ia.Localpart = puppet.CustomMXID[1:strings.IndexRune(puppet.CustomMXID, ':')]
ia.UserID = puppet.CustomMXID
ia.IsCustomPuppet = true
return ia, nil
}
func (puppet *Puppet) StartCustomMXID() error {
if len(puppet.CustomMXID) == 0 {
return nil
}
intent, err := puppet.newCustomIntent()
if err != nil {
puppet.CustomMXID = ""
puppet.AccessToken = ""
return err
}
urlPath := intent.BuildURL("account", "whoami")
var resp struct{ UserID string `json:"user_id"` }
_, err = intent.MakeRequest("GET", urlPath, nil, &resp)
if err != nil {
puppet.CustomMXID = ""
puppet.AccessToken = ""
return err
}
if resp.UserID != puppet.CustomMXID {
puppet.CustomMXID = ""
puppet.AccessToken = ""
return ErrMismatchingMXID
}
puppet.customIntent = intent
puppet.startSyncing()
return nil
}
func (puppet *Puppet) startSyncing() {
if !puppet.bridge.Config.Bridge.SyncWithCustomPuppets {
return
}
go func() {
puppet.log.Debugln("Starting syncing...")
err := puppet.customIntent.Sync()
if err != nil {
puppet.log.Errorln("Fatal error syncing:", err)
}
}()
}
func (puppet *Puppet) stopSyncing() {
if !puppet.bridge.Config.Bridge.SyncWithCustomPuppets {
return
}
puppet.customIntent.StopSync()
}
func (puppet *Puppet) ProcessResponse(resp *mautrix.RespSync, since string) error {
puppet.log.Debugln("Sync data:", resp, since)
// TODO handle sync data
return nil
}
func (puppet *Puppet) OnFailedSync(res *mautrix.RespSync, err error) (time.Duration, error) {
puppet.log.Warnln("Sync error:", err)
return 10 * time.Second, nil
}
func (puppet *Puppet) GetFilterJSON(_ string) json.RawMessage {
mxid, _ := json.Marshal(puppet.CustomMXID)
return json.RawMessage(fmt.Sprintf(`{
"account_data": { "types": [] },
"presence": {
"senders": [
%s
],
"types": [
"m.presence"
]
},
"room": {
"ephemeral": {
"types": [
"m.typing",
"m.receipt"
]
},
"include_leave": false,
"account_data": { "types": [] },
"state": { "types": [] },
"timeline": { "types": [] }
}
}`, mxid))
}
func (puppet *Puppet) SaveFilterID(_, _ string) {}
func (puppet *Puppet) SaveNextBatch(_, nbt string) { puppet.NextBatch = nbt }
func (puppet *Puppet) SaveRoom(room *mautrix.Room) {}
func (puppet *Puppet) LoadFilterID(_ string) string { return "" }
func (puppet *Puppet) LoadNextBatch(_ string) string { return puppet.NextBatch }
func (puppet *Puppet) LoadRoom(roomID string) *mautrix.Room { return nil }