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portal.go
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// mautrix-groupme - A Matrix-GroupMe puppeting bridge.
// Copyright (C) 2022 Sumner Evans, Karmanyaah Malhotra
//
// 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 (
"bytes"
"context"
"errors"
"fmt"
"image"
"io/ioutil"
"math"
"net/http"
"net/url"
"strconv"
"strings"
"sync"
"time"
log "maunium.net/go/maulogger/v2"
"maunium.net/go/mautrix/bridge"
"maunium.net/go/mautrix/bridge/bridgeconfig"
"maunium.net/go/mautrix/crypto/attachment"
"github.com/gabriel-vasile/mimetype"
"github.com/beeper/groupme-lib"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/appservice"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/id"
"github.com/beeper/groupme/database"
"github.com/beeper/groupme/groupmeext"
)
func (bridge *GMBridge) GetPortalByMXID(mxid id.RoomID) *Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
portal, ok := bridge.portalsByMXID[mxid]
if !ok {
return bridge.loadDBPortal(bridge.DB.Portal.GetByMXID(mxid), nil)
}
return portal
}
func (br *GMBridge) GetIPortal(mxid id.RoomID) bridge.Portal {
p := br.GetPortalByMXID(mxid)
if p == nil {
return nil
}
return p
}
func (portal *Portal) IsEncrypted() bool {
return portal.Encrypted
}
func (portal *Portal) MarkEncrypted() {
portal.Encrypted = true
portal.Update(nil)
}
func (portal *Portal) ReceiveMatrixEvent(user bridge.User, evt *event.Event) {
if user.GetPermissionLevel() >= bridgeconfig.PermissionLevelUser {
portal.matrixMessages <- PortalMatrixMessage{user: user.(*User), evt: evt, receivedAt: time.Now()}
}
}
func (bridge *GMBridge) GetPortalByGMID(key database.PortalKey) *Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
portal, ok := bridge.portalsByGMID[key]
if !ok {
return bridge.loadDBPortal(bridge.DB.Portal.GetByGMID(key), &key)
}
return portal
}
func (br *GMBridge) GetAllPortals() []*Portal {
return br.dbPortalsToPortals(br.DB.Portal.GetAll())
}
func (br *GMBridge) GetAllIPortals() (iportals []bridge.Portal) {
portals := br.GetAllPortals()
iportals = make([]bridge.Portal, len(portals))
for i, portal := range portals {
iportals[i] = portal
}
return iportals
}
func (br *GMBridge) GetAllPortalsByGMID(gmid groupme.ID) []*Portal {
return br.dbPortalsToPortals(br.DB.Portal.GetAllByGMID(gmid))
}
func (bridge *GMBridge) dbPortalsToPortals(dbPortals []*database.Portal) []*Portal {
bridge.portalsLock.Lock()
defer bridge.portalsLock.Unlock()
output := make([]*Portal, len(dbPortals))
for index, dbPortal := range dbPortals {
if dbPortal == nil {
continue
}
portal, ok := bridge.portalsByGMID[dbPortal.Key]
if !ok {
portal = bridge.loadDBPortal(dbPortal, nil)
}
output[index] = portal
}
return output
}
func (bridge *GMBridge) loadDBPortal(dbPortal *database.Portal, key *database.PortalKey) *Portal {
if dbPortal == nil {
if key == nil {
return nil
}
dbPortal = bridge.DB.Portal.New()
dbPortal.Key = *key
dbPortal.Insert()
}
portal := bridge.NewPortal(dbPortal)
bridge.portalsByGMID[portal.Key] = portal
if len(portal.MXID) > 0 {
bridge.portalsByMXID[portal.MXID] = portal
}
return portal
}
func (portal *Portal) GetUsers() []*User {
return nil
}
func (bridge *GMBridge) NewManualPortal(key database.PortalKey) *Portal {
portal := &Portal{
Portal: bridge.DB.Portal.New(),
bridge: bridge,
log: bridge.Log.Sub(fmt.Sprintf("Portal/%s", key)),
recentlyHandled: make([]string, recentlyHandledLength),
messages: make(chan PortalMessage, bridge.Config.Bridge.PortalMessageBuffer),
}
portal.Key = key
go portal.handleMessageLoop()
return portal
}
func (bridge *GMBridge) NewPortal(dbPortal *database.Portal) *Portal {
portal := &Portal{
Portal: dbPortal,
bridge: bridge,
log: bridge.Log.Sub(fmt.Sprintf("Portal/%s", dbPortal.Key)),
recentlyHandled: make([]string, recentlyHandledLength),
messages: make(chan PortalMessage, bridge.Config.Bridge.PortalMessageBuffer),
}
go portal.handleMessageLoop()
return portal
}
const recentlyHandledLength = 100
type PortalMessage struct {
chat database.PortalKey
source *User
data *groupme.Message
timestamp uint64
}
type PortalMatrixMessage struct {
evt *event.Event
user *User
receivedAt time.Time
}
type Portal struct {
*database.Portal
bridge *GMBridge
log log.Logger
roomCreateLock sync.Mutex
recentlyHandled []string
recentlyHandledLock sync.Mutex
recentlyHandledIndex uint8
encryptLock sync.Mutex
backfilling bool
lastMessageTs uint64
privateChatBackfillInvitePuppet func()
messages chan PortalMessage
matrixMessages chan PortalMatrixMessage
hasRelaybot *bool
}
const MaxMessageAgeToCreatePortal = 5 * 60 // 5 minutes
func (portal *Portal) handleMessageLoop() {
for msg := range portal.messages {
if len(portal.MXID) == 0 {
if msg.timestamp+MaxMessageAgeToCreatePortal < uint64(time.Now().Unix()) {
portal.log.Debugln("Not creating portal room for incoming message: message is too old")
continue
}
portal.log.Debugln("Creating Matrix room from incoming message")
err := portal.CreateMatrixRoom(msg.source)
if err != nil {
portal.log.Errorln("Failed to create portal room:", err)
continue
}
}
portal.handleMessage(msg)
}
}
func (portal *Portal) handleMessage(msg PortalMessage) {
if len(portal.MXID) == 0 {
portal.log.Warnln("handleMessage called even though portal.MXID is empty")
return
}
portal.HandleTextMessage(msg.source, msg.data)
// portal.handleReaction(msg.data.ID.String(), msg.data.FavoritedBy)
}
func (portal *Portal) isRecentlyHandled(id groupme.ID) bool {
idStr := id.String()
for i := recentlyHandledLength - 1; i >= 0; i-- {
if portal.recentlyHandled[i] == idStr {
return true
}
}
return false
}
func (portal *Portal) isDuplicate(id groupme.ID) bool {
msg := portal.bridge.DB.Message.GetByGMID(portal.Key, id)
if msg != nil {
return true
}
return false
}
func init() {
}
func (portal *Portal) markHandled(source *User, message *groupme.Message, mxid id.EventID) {
msg := portal.bridge.DB.Message.New()
msg.Chat = portal.Key
msg.GMID = message.ID
msg.MXID = mxid
msg.Timestamp = message.CreatedAt.ToTime()
if message.UserID == source.GMID {
msg.Sender = source.GMID
} else if portal.IsPrivateChat() {
msg.Sender = portal.Key.GMID
} else {
msg.Sender = message.SenderID
}
// msg.Insert()
portal.recentlyHandledLock.Lock()
portal.recentlyHandled[0] = "" //FIFO queue being implemented here //TODO: is this efficent
portal.recentlyHandled = portal.recentlyHandled[1:]
portal.recentlyHandled = append(portal.recentlyHandled, message.ID.String())
portal.recentlyHandledLock.Unlock()
}
func (portal *Portal) getMessageIntent(user *User, info *groupme.Message) *appservice.IntentAPI {
if portal.IsPrivateChat() {
if info.UserID == user.GetGMID() { //from me
return portal.bridge.GetPuppetByGMID(user.GMID).DefaultIntent()
}
return portal.MainIntent()
} else if len(info.UserID.String()) == 0 {
println("TODO weird uid stuff")
} else if info.UserID == user.GetGMID() { //from me
return portal.bridge.GetPuppetByGMID(user.GMID).IntentFor(portal)
}
return portal.bridge.GetPuppetByGMID(info.UserID).IntentFor(portal)
}
func (portal *Portal) getReactionIntent(jid groupme.ID) *appservice.IntentAPI {
return portal.bridge.GetPuppetByGMID(jid).IntentFor(portal)
}
func (portal *Portal) startHandling(source *User, info *groupme.Message) *appservice.IntentAPI {
// TODO these should all be trace logs
if portal.lastMessageTs > uint64(info.CreatedAt.ToTime().Unix()+1) {
portal.log.Debugfln("Not handling %s: message is older (%d) than last bridge message (%d)", info.ID, info.CreatedAt, portal.lastMessageTs)
} else if portal.isRecentlyHandled(info.ID) {
portal.log.Debugfln("Not handling %s: message was recently handled", info.ID)
} else if portal.isDuplicate(info.ID) {
portal.log.Debugfln("Not handling %s: message is duplicate", info.ID)
} else if info.System {
portal.log.Debugfln("Not handling %s: message is from system: %s", info.ID, info.Text)
} else {
portal.lastMessageTs = uint64(info.CreatedAt.ToTime().Unix())
intent := portal.getMessageIntent(source, info)
if intent != nil {
portal.log.Debugfln("Starting handling of %s (ts: %d)", info.ID, info.CreatedAt)
} else {
portal.log.Debugfln("Not handling %s: sender is not known", info.ID.String())
}
return intent
}
return nil
}
func (portal *Portal) finishHandling(source *User, message *groupme.Message, mxid id.EventID) {
portal.markHandled(source, message, mxid)
portal.sendDeliveryReceipt(mxid)
portal.log.Debugln("Handled message", message.ID.String(), "->", mxid)
}
func (portal *Portal) SyncParticipants(metadata *groupme.Group) {
changed := false
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
changed = true
}
participantMap := make(map[groupme.ID]bool)
for _, participant := range metadata.Members {
participantMap[participant.UserID] = true
user := portal.bridge.GetUserByGMID(participant.UserID)
portal.userMXIDAction(user, portal.ensureMXIDInvited)
puppet := portal.bridge.GetPuppetByGMID(participant.UserID)
err := puppet.IntentFor(portal).EnsureJoined(portal.MXID)
if err != nil {
portal.log.Warnfln("Failed to make puppet of %s join %s: %v", participant.ID.String(), portal.MXID, err)
}
expectedLevel := 0
// if participant.IsSuperAdmin {
// expectedLevel = 95
// } else if participant.IsAdmin {
// expectedLevel = 50
// }
changed = levels.EnsureUserLevel(puppet.MXID, expectedLevel) || changed
if user != nil {
changed = levels.EnsureUserLevel(user.MXID, expectedLevel) || changed
}
puppet.Sync(nil, participant, false, false)
}
if changed {
_, err = portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
}
}
members, err := portal.MainIntent().JoinedMembers(portal.MXID)
if err != nil {
portal.log.Warnln("Failed to get member list:", err)
} else {
for member := range members.Joined {
jid, ok := portal.bridge.ParsePuppetMXID(member)
if ok {
_, shouldBePresent := participantMap[jid]
if !shouldBePresent {
_, err := portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{
UserID: member,
Reason: "User had left this GroupMe chat",
})
if err != nil {
portal.log.Warnfln("Failed to kick user %s who had left: %v", member, err)
}
}
}
}
}
}
func (user *User) updateAvatar(gmdi groupme.ID, avatarID *string, avatarURL *id.ContentURI, avatarSet *bool, log log.Logger, intent *appservice.IntentAPI) bool {
return false
}
func (portal *Portal) UpdateAvatar(user *User, avatar string, updateInfo bool) bool {
// if len(avatar) == 0 {
// var err error
// avatar, err = user.Conn.GetProfilePicThumb(portal.Key.JID)
// if err != nil {
// portal.log.Errorln(err)
// return false
// }
// }
//TODO: duplicated code from puppet.UpdateAvatar
if len(avatar) == 0 {
if len(portal.Avatar) == 0 {
return false
}
err := portal.MainIntent().SetAvatarURL(id.ContentURI{})
if err != nil {
portal.log.Warnln("Failed to remove avatar:", err)
}
portal.AvatarURL = id.ContentURI{}
portal.Avatar = avatar
return true
}
if portal.Avatar == avatar {
return false
}
//TODO check its actually groupme?
response, err := http.Get(avatar + ".large")
if err != nil {
portal.log.Warnln("Failed to download avatar:", err)
return false
}
defer response.Body.Close()
image, err := ioutil.ReadAll(response.Body)
if err != nil {
portal.log.Warnln("Failed to read downloaded avatar:", err)
return false
}
mime := response.Header.Get("Content-Type")
if len(mime) == 0 {
mime = http.DetectContentType(image)
}
resp, err := portal.MainIntent().UploadBytes(image, mime)
if err != nil {
portal.log.Warnln("Failed to upload avatar:", err)
return false
}
portal.AvatarURL = resp.ContentURI
if len(portal.MXID) > 0 {
_, err = portal.MainIntent().SetRoomAvatar(portal.MXID, resp.ContentURI)
if err != nil {
portal.log.Warnln("Failed to set room topic:", err)
return false
}
}
portal.Avatar = avatar
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
}
func (portal *Portal) UpdateName(name string, setBy groupme.ID, updateInfo bool) bool {
if portal.Name != name {
intent := portal.MainIntent()
if len(setBy) > 0 {
intent = portal.bridge.GetPuppetByGMID(setBy).IntentFor(portal)
}
_, err := intent.SetRoomName(portal.MXID, name)
if err == nil {
portal.Name = name
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
}
portal.log.Warnln("Failed to set room name:", err)
}
return false
}
func (portal *Portal) UpdateTopic(topic string, setBy groupme.ID, updateInfo bool) bool {
if portal.Topic != topic {
intent := portal.MainIntent()
if len(setBy) > 0 {
intent = portal.bridge.GetPuppetByGMID(setBy).IntentFor(portal)
}
_, err := intent.SetRoomTopic(portal.MXID, topic)
if err == nil {
portal.Topic = topic
if updateInfo {
portal.UpdateBridgeInfo()
}
return true
}
portal.log.Warnln("Failed to set room topic:", err)
}
return false
}
func (portal *Portal) UpdateMetadata(user *User) bool {
if portal.IsPrivateChat() {
return false
}
group, err := user.Client.ShowGroup(context.TODO(), groupme.ID(strings.Replace(portal.Key.GMID.String(), groupmeext.NewUserSuffix, "", 1)))
if err != nil {
portal.log.Errorln(err)
return false
}
// if metadata.Status != 0 {
// 401: access denied
// 404: group does (no longer) exist
// 500: ??? happens with status@broadcast
// TODO: update the room, e.g. change priority level
// to send messages to moderator
//return false
// }
portal.SyncParticipants(group)
update := false
update = portal.UpdateName(group.Name, "", false) || update
update = portal.UpdateTopic(group.Description, "", false) || update
// portal.RestrictMessageSending(metadata.Announce)
return update
}
func (portal *Portal) userMXIDAction(user *User, fn func(mxid id.UserID)) {
if user == nil {
return
}
fn(user.MXID)
}
func (portal *Portal) ensureMXIDInvited(mxid id.UserID) {
err := portal.MainIntent().EnsureInvited(portal.MXID, mxid)
if err != nil {
portal.log.Warnfln("Failed to ensure %s is invited to %s: %v", mxid, portal.MXID, err)
}
}
func (portal *Portal) ensureUserInvited(user *User) bool {
return user.ensureInvited(portal.MainIntent(), portal.MXID, portal.IsPrivateChat())
}
func (portal *Portal) Sync(user *User, group *groupme.Group) {
portal.log.Infoln("Syncing portal for", user.MXID)
sub := user.Conn.SubscribeToGroup
if portal.IsPrivateChat() {
sub = user.Conn.SubscribeToDM
}
err := sub(context.TODO(), groupme.ID(portal.Key.Receiver), user.Token)
if err != nil {
portal.log.Errorln("Subscribing failed, live metadata updates won't work", err)
}
if len(portal.MXID) == 0 {
if !portal.IsPrivateChat() {
portal.Name = group.Name
}
err := portal.CreateMatrixRoom(user)
if err != nil {
portal.log.Errorln("Failed to create portal room:", err)
return
}
} else {
portal.ensureUserInvited(user)
}
if portal.IsPrivateChat() {
return
}
update := false
update = portal.UpdateMetadata(user) || update
update = portal.UpdateAvatar(user, group.ImageURL, false) || update
if update {
portal.Update(nil)
portal.UpdateBridgeInfo()
}
}
func (portal *Portal) GetBasePowerLevels() *event.PowerLevelsEventContent {
anyone := 0
nope := 99
invite := 50
if portal.bridge.Config.Bridge.AllowUserInvite {
invite = 0
}
return &event.PowerLevelsEventContent{
UsersDefault: anyone,
EventsDefault: anyone,
RedactPtr: &anyone,
StateDefaultPtr: &nope,
BanPtr: &nope,
InvitePtr: &invite,
Users: map[id.UserID]int{
portal.MainIntent().UserID: 100,
},
Events: map[string]int{
event.StateRoomName.Type: anyone,
event.StateRoomAvatar.Type: anyone,
event.StateTopic.Type: anyone,
},
}
}
func (portal *Portal) RestrictMessageSending(restrict bool) {
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
}
newLevel := 0
if restrict {
newLevel = 50
}
if levels.EventsDefault == newLevel {
return
}
levels.EventsDefault = newLevel
_, err = portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
}
}
func (portal *Portal) RestrictMetadataChanges(restrict bool) {
levels, err := portal.MainIntent().PowerLevels(portal.MXID)
if err != nil {
levels = portal.GetBasePowerLevels()
}
newLevel := 0
if restrict {
newLevel = 50
}
changed := false
changed = levels.EnsureEventLevel(event.StateRoomName, newLevel) || changed
changed = levels.EnsureEventLevel(event.StateRoomAvatar, newLevel) || changed
changed = levels.EnsureEventLevel(event.StateTopic, newLevel) || changed
if changed {
_, err = portal.MainIntent().SetPowerLevels(portal.MXID, levels)
if err != nil {
portal.log.Errorln("Failed to change power levels:", err)
}
}
}
type BridgeInfoSection struct {
ID string `json:"id"`
DisplayName string `json:"displayname,omitempty"`
AvatarURL id.ContentURIString `json:"avatar_url,omitempty"`
ExternalURL string `json:"external_url,omitempty"`
}
type BridgeInfoContent struct {
BridgeBot id.UserID `json:"bridgebot"`
Creator id.UserID `json:"creator,omitempty"`
Protocol BridgeInfoSection `json:"protocol"`
Network *BridgeInfoSection `json:"network,omitempty"`
Channel BridgeInfoSection `json:"channel"`
}
func (portal *Portal) getBridgeInfoStateKey() string {
return fmt.Sprintf("com.beeper.groupme://groupme/%s", portal.Key.GMID)
}
func (portal *Portal) getBridgeInfo() (string, event.BridgeEventContent) {
bridgeInfo := event.BridgeEventContent{
BridgeBot: portal.bridge.Bot.UserID,
Creator: portal.MainIntent().UserID,
Protocol: event.BridgeInfoSection{
ID: "groupme",
DisplayName: "GroupMe",
AvatarURL: portal.bridge.Config.AppService.Bot.ParsedAvatar.CUString(),
ExternalURL: "https://www.groupme.com/",
},
Channel: event.BridgeInfoSection{
ID: portal.Key.GMID.String(),
DisplayName: portal.Name,
AvatarURL: portal.AvatarURL.CUString(),
},
}
return portal.getBridgeInfoStateKey(), bridgeInfo
}
func (portal *Portal) UpdateBridgeInfo() {
if len(portal.MXID) == 0 {
portal.log.Debugln("Not updating bridge info: no Matrix room created")
return
}
portal.log.Debugln("Updating bridge info...")
stateKey, content := portal.getBridgeInfo()
_, err := portal.MainIntent().SendStateEvent(portal.MXID, event.StateBridge, stateKey, content)
if err != nil {
portal.log.Warnln("Failed to update m.bridge:", err)
}
// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
_, err = portal.MainIntent().SendStateEvent(portal.MXID, event.StateHalfShotBridge, stateKey, content)
if err != nil {
portal.log.Warnln("Failed to update uk.half-shot.bridge:", err)
}
}
func (portal *Portal) GetEncryptionEventContent() (evt *event.EncryptionEventContent) {
evt = &event.EncryptionEventContent{Algorithm: id.AlgorithmMegolmV1}
if rot := portal.bridge.Config.Bridge.Encryption.Rotation; rot.EnableCustom {
evt.RotationPeriodMillis = rot.Milliseconds
evt.RotationPeriodMessages = rot.Messages
}
return
}
func (portal *Portal) CreateMatrixRoom(user *User) error {
portal.roomCreateLock.Lock()
defer portal.roomCreateLock.Unlock()
if len(portal.MXID) > 0 {
return nil
}
intent := portal.MainIntent()
if err := intent.EnsureRegistered(); err != nil {
return err
}
portal.log.Infoln("Creating Matrix room. Info source:", user.MXID)
var metadata *groupme.Group
if portal.IsPrivateChat() {
puppet := portal.bridge.GetPuppetByGMID(portal.Key.GMID)
if portal.bridge.Config.Bridge.PrivateChatPortalMeta || portal.bridge.Config.Bridge.Encryption.Default {
portal.Name = puppet.Displayname
portal.AvatarURL = puppet.AvatarURL
portal.Avatar = puppet.Avatar
} else {
portal.Name = ""
}
portal.Topic = "GroupMe private chat"
} else {
var err error
metadata, err = user.Client.ShowGroup(context.TODO(), groupme.ID(portal.Key.GMID))
if err == nil {
portal.Name = metadata.Name
portal.Topic = metadata.Description
}
portal.UpdateAvatar(user, metadata.ImageURL, false)
}
bridgeInfoStateKey, bridgeInfo := portal.getBridgeInfo()
initialState := []*event.Event{{
Type: event.StatePowerLevels,
Content: event.Content{
Parsed: portal.GetBasePowerLevels(),
},
}, {
Type: event.StateBridge,
Content: event.Content{Parsed: bridgeInfo},
StateKey: &bridgeInfoStateKey,
}, {
// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
Type: event.StateHalfShotBridge,
Content: event.Content{Parsed: bridgeInfo},
StateKey: &bridgeInfoStateKey,
}}
if !portal.AvatarURL.IsEmpty() {
initialState = append(initialState, &event.Event{
Type: event.StateRoomAvatar,
Content: event.Content{
Parsed: event.RoomAvatarEventContent{URL: portal.AvatarURL},
},
})
}
invite := []id.UserID{user.MXID}
if portal.bridge.Config.Bridge.Encryption.Default {
initialState = append(initialState, &event.Event{
Type: event.StateEncryption,
Content: event.Content{
Parsed: event.EncryptionEventContent{Algorithm: id.AlgorithmMegolmV1},
},
})
portal.Encrypted = true
if portal.IsPrivateChat() {
invite = append(invite, portal.bridge.Bot.UserID)
}
}
resp, err := intent.CreateRoom(&mautrix.ReqCreateRoom{
Visibility: "private",
Name: portal.Name,
Topic: portal.Topic,
Invite: invite,
Preset: "private_chat",
IsDirect: portal.IsPrivateChat(),
InitialState: initialState,
})
if err != nil {
return err
} else if len(resp.RoomID) == 0 {
return errors.New("Empty room ID")
}
portal.MXID = resp.RoomID
portal.Update(nil)
portal.bridge.portalsLock.Lock()
portal.bridge.portalsByMXID[portal.MXID] = portal
portal.bridge.portalsLock.Unlock()
// We set the memberships beforehand to make sure the encryption key exchange in initial backfill knows the users are here.
for _, user := range invite {
portal.bridge.StateStore.SetMembership(portal.MXID, user, event.MembershipInvite)
}
if metadata != nil {
portal.SyncParticipants(metadata)
// if metadata.Announce {
// portal.RestrictMessageSending(metadata.Announce)
// }
} else {
customPuppet := portal.bridge.GetPuppetByCustomMXID(user.MXID)
if customPuppet != nil && customPuppet.CustomIntent() != nil {
_ = customPuppet.CustomIntent().EnsureJoined(portal.MXID)
}
}
if portal.IsPrivateChat() {
puppet := user.bridge.GetPuppetByGMID(portal.Key.GMID)
if portal.bridge.Config.Bridge.Encryption.Default {
err = portal.bridge.Bot.EnsureJoined(portal.MXID)
if err != nil {
portal.log.Errorln("Failed to join created portal with bridge bot for e2be:", err)
}
}
user.UpdateDirectChats(map[id.UserID][]id.RoomID{puppet.MXID: {portal.MXID}})
}
return nil
}
func (portal *Portal) IsPrivateChat() bool {
return portal.Key.IsPrivate()
}
func (portal *Portal) IsStatusBroadcastRoom() bool {
return portal.Key.GMID == "status@broadcast"
}
func (portal *Portal) MainIntent() *appservice.IntentAPI {
if portal.IsPrivateChat() {
return portal.bridge.GetPuppetByGMID(portal.Key.GMID).DefaultIntent()
}
return portal.bridge.Bot
}
func (portal *Portal) SetReply(content *event.MessageEventContent, msgID groupme.ID) {
if len(msgID) == 0 {
return
}
message := portal.bridge.DB.Message.GetByGMID(portal.Key, msgID)
if message != nil {
evt, err := portal.MainIntent().GetEvent(portal.MXID, message.MXID)
if err != nil {
portal.log.Warnln("Failed to get reply target:", err)
return
}
if evt.Type == event.EventEncrypted {
_ = evt.Content.ParseRaw(evt.Type)
decryptedEvt, err := portal.bridge.Crypto.Decrypt(evt)
if err != nil {
portal.log.Warnln("Failed to decrypt reply target:", err)
} else {
evt = decryptedEvt
}
}
_ = evt.Content.ParseRaw(evt.Type)
content.SetReply(evt)
}
return
}
const MessageSendRetries = 5
const MediaUploadRetries = 5
const BadGatewaySleep = 5 * time.Second
func (portal *Portal) sendReaction(intent *appservice.IntentAPI, eventID id.EventID, reaction string) (*mautrix.RespSendEvent, error) {
var content event.ReactionEventContent
content.RelatesTo = event.RelatesTo{
Type: event.RelAnnotation,
EventID: eventID,
Key: reaction,
}
return intent.SendMassagedMessageEvent(portal.MXID, event.EventReaction, &content, time.Now().UnixMilli())
}
func isGatewayError(err error) bool {
if err == nil {
return false
}
var httpErr mautrix.HTTPError
return errors.As(err, &httpErr) && (httpErr.IsStatus(http.StatusBadGateway) || httpErr.IsStatus(http.StatusGatewayTimeout))
}
func (portal *Portal) sendMainIntentMessage(content *event.MessageEventContent) (*mautrix.RespSendEvent, error) {
return portal.sendMessage(portal.MainIntent(), event.EventMessage, content, nil, 0)
}
func (portal *Portal) encrypt(intent *appservice.IntentAPI, content *event.Content, eventType event.Type) (event.Type, error) {
if !portal.Encrypted || portal.bridge.Crypto == nil {
return eventType, nil
}
intent.AddDoublePuppetValue(content)
// TODO maybe the locking should be inside mautrix-go?
portal.encryptLock.Lock()
defer portal.encryptLock.Unlock()
err := portal.bridge.Crypto.Encrypt(portal.MXID, eventType, content)
if err != nil {
return eventType, fmt.Errorf("failed to encrypt event: %w", err)
}
return event.EventEncrypted, nil
}
func (portal *Portal) sendMessage(intent *appservice.IntentAPI, eventType event.Type, content *event.MessageEventContent, extraContent map[string]any, timestamp int64) (*mautrix.RespSendEvent, error) {
wrappedContent := event.Content{Parsed: content, Raw: extraContent}
var err error
eventType, err = portal.encrypt(intent, &wrappedContent, eventType)
if err != nil {
return nil, err
}
_, _ = intent.UserTyping(portal.MXID, false, 0)
if timestamp == 0 {
return intent.SendMessageEvent(portal.MXID, eventType, &wrappedContent)
} else {
return intent.SendMassagedMessageEvent(portal.MXID, eventType, &wrappedContent, timestamp)
}
}
func (portal *Portal) handleAttachment(intent *appservice.IntentAPI, attachment *groupme.Attachment, source *User, message *groupme.Message) (msg *event.MessageEventContent, sendText bool, err error) {
sendText = true
switch attachment.Type {
case "image":
imgData, mime, err := groupmeext.DownloadImage(attachment.URL)
if err != nil {
return nil, true, fmt.Errorf("failed to load media info: %w", err)
}
var width, height int
if strings.HasPrefix(mime, "image/") {
cfg, _, _ := image.DecodeConfig(bytes.NewReader(*imgData))
width, height = cfg.Width, cfg.Height
}
data, uploadMimeType, file := portal.encryptFile(*imgData, mime)
uploaded, err := intent.UploadBytes(data, uploadMimeType)
if err != nil {
if errors.Is(err, mautrix.MTooLarge) {
err = errors.New("homeserver rejected too large file")
} else if httpErr := err.(mautrix.HTTPError); httpErr.IsStatus(413) {
err = errors.New("proxy rejected too large file")
} else {
err = fmt.Errorf("failed to upload media: %w", err)
}
return nil, true, err
}
attachmentUrl, _ := url.Parse(attachment.URL)
urlParts := strings.Split(attachmentUrl.Path, ".")
var fname1, fname2 string
if len(urlParts) == 2 {
fname1, fname2 = urlParts[1], urlParts[0]
} else if len(urlParts) > 2 {
fname1, fname2 = urlParts[2], urlParts[1]
} //TODO abstract groupme url parsing in groupmeext
fname := fmt.Sprintf("%s.%s", fname1, fname2)
content := &event.MessageEventContent{
Body: fname,
File: file,
Info: &event.FileInfo{
Size: len(data),
MimeType: mime,
Width: width,
Height: height,
//Duration: int(msg.length),
},
}
if content.File != nil {
content.File.URL = uploaded.ContentURI.CUString()