685 lines
21 KiB
Go
685 lines
21 KiB
Go
// Copyright (c) 2023 Proton AG
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//
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// This file is part of Proton Mail Bridge.
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//
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// Proton Mail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Proton Mail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package user
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"github.com/ProtonMail/gluon/imap"
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"github.com/ProtonMail/gluon/queue"
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"github.com/ProtonMail/gluon/reporter"
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"github.com/ProtonMail/go-proton-api"
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"github.com/ProtonMail/gopenpgp/v2/crypto"
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"github.com/ProtonMail/proton-bridge/v3/internal/events"
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"github.com/ProtonMail/proton-bridge/v3/internal/logging"
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"github.com/ProtonMail/proton-bridge/v3/internal/safe"
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"github.com/ProtonMail/proton-bridge/v3/internal/vault"
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"github.com/bradenaw/juniper/xslices"
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"github.com/sirupsen/logrus"
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"golang.org/x/exp/maps"
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)
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// handleAPIEvent handles the given proton.Event.
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func (user *User) handleAPIEvent(ctx context.Context, event proton.Event) error {
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if event.Refresh&proton.RefreshMail != 0 {
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return user.handleRefreshEvent(ctx, event.Refresh, event.EventID)
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}
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if event.User != nil {
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user.handleUserEvent(ctx, *event.User)
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}
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if len(event.Addresses) > 0 {
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if err := user.handleAddressEvents(ctx, event.Addresses); err != nil {
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return err
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}
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}
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if len(event.Labels) > 0 {
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if err := user.handleLabelEvents(ctx, event.Labels); err != nil {
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return err
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}
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}
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if len(event.Messages) > 0 {
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if err := user.handleMessageEvents(ctx, event.Messages); err != nil {
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return err
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}
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}
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return nil
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}
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func (user *User) handleRefreshEvent(ctx context.Context, refresh proton.RefreshFlag, eventID string) error {
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l := user.log.WithFields(logrus.Fields{
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"eventID": eventID,
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"refresh": refresh,
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})
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l.Info("Handling refresh event")
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if err := user.reporter.ReportMessageWithContext("Warning: refresh occurred", map[string]interface{}{
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"EventLoop": map[string]interface{}{
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"EventID": eventID,
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"Refresh": refresh,
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},
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}); err != nil {
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l.WithError(err).Error("Failed to report refresh to sentry")
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}
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// Cancel and restart ongoing syncs.
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user.abortable.Abort()
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defer user.goSync()
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return safe.LockRet(func() error {
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// Fetch latest user info.
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apiUser, err := user.client.GetUser(ctx)
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if err != nil {
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return fmt.Errorf("failed to get user: %w", err)
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}
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// Fetch latest address info.
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apiAddrs, err := user.client.GetAddresses(ctx)
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if err != nil {
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return fmt.Errorf("failed to get addresses: %w", err)
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}
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// Fetch latest label info.
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apiLabels, err := user.client.GetLabels(ctx, proton.LabelTypeSystem, proton.LabelTypeFolder, proton.LabelTypeLabel)
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if err != nil {
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return fmt.Errorf("failed to get labels: %w", err)
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}
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// Update the API info in the user.
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user.apiUser = apiUser
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user.apiAddrs = groupBy(apiAddrs, func(addr proton.Address) string { return addr.ID })
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user.apiLabels = groupBy(apiLabels, func(label proton.Label) string { return label.ID })
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// Reinitialize the update channels.
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user.initUpdateCh(user.vault.AddressMode())
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// Clear sync status; we want to sync everything again.
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if err := user.vault.ClearSyncStatus(); err != nil {
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return fmt.Errorf("failed to clear sync status: %w", err)
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}
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// The user was refreshed.
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user.eventCh.Enqueue(events.UserRefreshed{
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UserID: user.apiUser.ID,
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})
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return nil
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}, user.apiUserLock, user.apiAddrsLock, user.apiLabelsLock, user.updateChLock)
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}
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// handleUserEvent handles the given user event.
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func (user *User) handleUserEvent(_ context.Context, userEvent proton.User) {
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safe.Lock(func() {
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user.log.WithFields(logrus.Fields{
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"userID": userEvent.ID,
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"username": logging.Sensitive(userEvent.Name),
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}).Info("Handling user event")
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user.apiUser = userEvent
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user.eventCh.Enqueue(events.UserChanged{
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UserID: user.apiUser.ID,
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})
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}, user.apiUserLock)
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}
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// handleAddressEvents handles the given address events.
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// GODT-1945: If split address mode, need to signal back to bridge to update the addresses.
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func (user *User) handleAddressEvents(ctx context.Context, addressEvents []proton.AddressEvent) error {
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for _, event := range addressEvents {
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switch event.Action {
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case proton.EventCreate:
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if err := user.handleCreateAddressEvent(ctx, event); err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply address create event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report address create event error")
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}
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return fmt.Errorf("failed to handle create address event: %w", err)
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}
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case proton.EventUpdate, proton.EventUpdateFlags:
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if err := user.handleUpdateAddressEvent(ctx, event); err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply address update event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report address update event error")
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}
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return fmt.Errorf("failed to handle update address event: %w", err)
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}
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case proton.EventDelete:
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if err := user.handleDeleteAddressEvent(ctx, event); err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply address delete event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report address delete event error")
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}
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return fmt.Errorf("failed to delete address: %w", 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 (user *User) handleCreateAddressEvent(ctx context.Context, event proton.AddressEvent) error {
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if err := safe.LockRet(func() error {
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user.log.WithFields(logrus.Fields{
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"addressID": event.ID,
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"email": logging.Sensitive(event.Address.Email),
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}).Info("Handling address created event")
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if _, ok := user.apiAddrs[event.Address.ID]; ok {
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user.log.Debugf("Address %q already exists", event.ID)
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return nil
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}
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user.apiAddrs[event.Address.ID] = event.Address
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switch user.vault.AddressMode() {
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case vault.CombinedMode:
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primAddr, err := getAddrIdx(user.apiAddrs, 0)
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if err != nil {
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return fmt.Errorf("failed to get primary address: %w", err)
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}
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user.updateCh[event.Address.ID] = user.updateCh[primAddr.ID]
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case vault.SplitMode:
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user.updateCh[event.Address.ID] = queue.NewQueuedChannel[imap.Update](0, 0)
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}
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user.eventCh.Enqueue(events.UserAddressCreated{
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UserID: user.apiUser.ID,
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AddressID: event.Address.ID,
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Email: event.Address.Email,
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})
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return nil
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}, user.apiAddrsLock, user.updateChLock); err != nil {
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return fmt.Errorf("failed to handle create address event: %w", err)
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}
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// Perform the sync in an RLock.
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return safe.RLockRet(func() error {
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if user.vault.AddressMode() == vault.SplitMode {
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if err := syncLabels(ctx, user.apiLabels, user.updateCh[event.Address.ID]); err != nil {
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return fmt.Errorf("failed to sync labels to new address: %w", err)
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}
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}
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return nil
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}, user.apiAddrsLock, user.apiLabelsLock, user.updateChLock)
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}
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func (user *User) handleUpdateAddressEvent(_ context.Context, event proton.AddressEvent) error { //nolint:unparam
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return safe.LockRet(func() error {
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user.log.WithFields(logrus.Fields{
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"addressID": event.ID,
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"email": logging.Sensitive(event.Address.Email),
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}).Info("Handling address updated event")
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if _, ok := user.apiAddrs[event.Address.ID]; !ok {
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user.log.Debugf("Address %q does not exist", event.Address.ID)
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return nil
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}
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user.apiAddrs[event.Address.ID] = event.Address
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user.eventCh.Enqueue(events.UserAddressUpdated{
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UserID: user.apiUser.ID,
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AddressID: event.Address.ID,
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Email: event.Address.Email,
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})
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return nil
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}, user.apiAddrsLock)
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}
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func (user *User) handleDeleteAddressEvent(_ context.Context, event proton.AddressEvent) error {
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return safe.LockRet(func() error {
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user.log.WithField("addressID", event.ID).Info("Handling address deleted event")
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addr, ok := user.apiAddrs[event.ID]
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if !ok {
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user.log.Debugf("Address %q does not exist", event.ID)
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return nil
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}
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if user.vault.AddressMode() == vault.SplitMode {
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user.updateCh[event.ID].CloseAndDiscardQueued()
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delete(user.updateCh, event.ID)
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}
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delete(user.apiAddrs, event.ID)
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user.eventCh.Enqueue(events.UserAddressDeleted{
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UserID: user.apiUser.ID,
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AddressID: event.ID,
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Email: addr.Email,
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})
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return nil
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}, user.apiAddrsLock, user.updateChLock)
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}
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// handleLabelEvents handles the given label events.
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func (user *User) handleLabelEvents(ctx context.Context, labelEvents []proton.LabelEvent) error {
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for _, event := range labelEvents {
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switch event.Action {
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case proton.EventCreate:
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updates, err := user.handleCreateLabelEvent(ctx, event)
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if err != nil {
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return fmt.Errorf("failed to handle create label event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return err
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}
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case proton.EventUpdate, proton.EventUpdateFlags:
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updates, err := user.handleUpdateLabelEvent(ctx, event)
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if err != nil {
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return fmt.Errorf("failed to handle update label event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return err
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}
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case proton.EventDelete:
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updates, err := user.handleDeleteLabelEvent(ctx, event)
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if err != nil {
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return fmt.Errorf("failed to handle delete label event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return fmt.Errorf("failed to handle delete label event in gluon: %w", 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 (user *User) handleCreateLabelEvent(ctx context.Context, event proton.LabelEvent) ([]imap.Update, error) { //nolint:unparam
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return safe.LockRetErr(func() ([]imap.Update, error) {
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var updates []imap.Update
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user.log.WithFields(logrus.Fields{
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"labelID": event.ID,
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"name": logging.Sensitive(event.Label.Name),
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}).Info("Handling label created event")
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user.apiLabels[event.Label.ID] = event.Label
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for _, updateCh := range xslices.Unique(maps.Values(user.updateCh)) {
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update := newMailboxCreatedUpdate(imap.MailboxID(event.ID), getMailboxName(event.Label))
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updateCh.Enqueue(update)
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updates = append(updates, update)
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}
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user.eventCh.Enqueue(events.UserLabelCreated{
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UserID: user.apiUser.ID,
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LabelID: event.Label.ID,
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Name: event.Label.Name,
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})
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return updates, nil
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}, user.apiLabelsLock, user.updateChLock)
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}
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func (user *User) handleUpdateLabelEvent(ctx context.Context, event proton.LabelEvent) ([]imap.Update, error) { //nolint:unparam
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return safe.LockRetErr(func() ([]imap.Update, error) {
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var updates []imap.Update
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user.log.WithFields(logrus.Fields{
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"labelID": event.ID,
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"name": logging.Sensitive(event.Label.Name),
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}).Info("Handling label updated event")
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// Only update the label if it exists; we don't want to create it as a client may have just deleted it.
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if _, ok := user.apiLabels[event.Label.ID]; ok {
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user.apiLabels[event.Label.ID] = event.Label
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}
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for _, updateCh := range xslices.Unique(maps.Values(user.updateCh)) {
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update := imap.NewMailboxUpdated(
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imap.MailboxID(event.ID),
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getMailboxName(event.Label),
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)
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updateCh.Enqueue(update)
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updates = append(updates, update)
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}
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user.eventCh.Enqueue(events.UserLabelUpdated{
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UserID: user.apiUser.ID,
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LabelID: event.Label.ID,
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Name: event.Label.Name,
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})
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return updates, nil
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}, user.apiLabelsLock, user.updateChLock)
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}
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func (user *User) handleDeleteLabelEvent(ctx context.Context, event proton.LabelEvent) ([]imap.Update, error) { //nolint:unparam
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return safe.LockRetErr(func() ([]imap.Update, error) {
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var updates []imap.Update
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user.log.WithField("labelID", event.ID).Info("Handling label deleted event")
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for _, updateCh := range xslices.Unique(maps.Values(user.updateCh)) {
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update := imap.NewMailboxDeleted(imap.MailboxID(event.ID))
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updateCh.Enqueue(update)
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updates = append(updates, update)
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}
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delete(user.apiLabels, event.ID)
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user.eventCh.Enqueue(events.UserLabelDeleted{
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UserID: user.apiUser.ID,
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LabelID: event.ID,
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})
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return updates, nil
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}, user.apiLabelsLock, user.updateChLock)
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}
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// handleMessageEvents handles the given message events.
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func (user *User) handleMessageEvents(ctx context.Context, messageEvents []proton.MessageEvent) error { //nolint:funlen
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for _, event := range messageEvents {
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ctx = logging.WithLogrusField(ctx, "messageID", event.ID)
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switch event.Action {
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case proton.EventCreate:
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updates, err := user.handleCreateMessageEvent(
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logging.WithLogrusField(ctx, "action", "create message"),
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event)
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if err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply create message event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report create message event error")
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}
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return fmt.Errorf("failed to handle create message event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return err
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}
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case proton.EventUpdate, proton.EventUpdateFlags:
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// Draft update means to completely remove old message and upload the new data again, but we should
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// only do this if the event is of type EventUpdate otherwise label switch operations will not work.
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if event.Message.IsDraft() && event.Action == proton.EventUpdate {
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updates, err := user.handleUpdateDraftEvent(
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logging.WithLogrusField(ctx, "action", "update draft"),
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event,
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)
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if err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply update draft message event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report update draft message event error")
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}
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return fmt.Errorf("failed to handle update draft event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return err
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}
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return nil
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}
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// GODT-2028 - Use better events here. It should be possible to have 3 separate events that refrain to
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// whether the flags, labels or read only data (header+body) has been changed. This requires fixing proton
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// first so that it correctly reports those cases.
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// Issue regular update to handle mailboxes and flag changes.
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updates, err := user.handleUpdateMessageEvent(
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logging.WithLogrusField(ctx, "action", "update message"),
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event,
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)
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if err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply update message event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report update message event error")
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}
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return fmt.Errorf("failed to handle update message event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return err
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}
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case proton.EventDelete:
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updates, err := user.handleDeleteMessageEvent(
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logging.WithLogrusField(ctx, "action", "delete message"),
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event,
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)
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if err != nil {
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if rerr := user.reporter.ReportMessageWithContext("Failed to apply delete message event", reporter.Context{
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"error": err,
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}); rerr != nil {
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user.log.WithError(err).Error("Failed to report delete message event error")
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}
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return fmt.Errorf("failed to handle delete message event: %w", err)
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}
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if err := waitOnIMAPUpdates(ctx, updates); err != nil {
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return fmt.Errorf("failed to handle delete message event in gluon: %w", 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 (user *User) handleCreateMessageEvent(ctx context.Context, event proton.MessageEvent) ([]imap.Update, error) {
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full, err := user.client.GetFullMessage(ctx, event.Message.ID)
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if err != nil {
|
|
// If the message is not found, it means that it has been deleted before we could fetch it.
|
|
if apiErr := new(proton.APIError); errors.As(err, &apiErr) && apiErr.Status == http.StatusUnprocessableEntity {
|
|
return nil, nil
|
|
}
|
|
|
|
return nil, fmt.Errorf("failed to get full message: %w", err)
|
|
}
|
|
|
|
return safe.RLockRetErr(func() ([]imap.Update, error) {
|
|
user.log.WithFields(logrus.Fields{
|
|
"messageID": event.ID,
|
|
"subject": logging.Sensitive(event.Message.Subject),
|
|
}).Info("Handling message created event")
|
|
|
|
var update imap.Update
|
|
if err := withAddrKR(user.apiUser, user.apiAddrs[event.Message.AddressID], user.vault.KeyPass(), func(_, addrKR *crypto.KeyRing) error {
|
|
res := buildRFC822(user.apiLabels, full, addrKR)
|
|
|
|
if res.err != nil {
|
|
user.log.WithError(err).Error("Failed to build RFC822 message")
|
|
|
|
if err := user.vault.AddFailedMessageID(event.ID); err != nil {
|
|
user.log.WithError(err).Error("Failed to add failed message ID to vault")
|
|
}
|
|
|
|
if err := user.reporter.ReportMessageWithContext("Failed to build message (event create)", reporter.Context{
|
|
"messageID": res.messageID,
|
|
"error": res.err,
|
|
}); err != nil {
|
|
user.log.WithError(err).Error("Failed to report message build error")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
if err := user.vault.RemFailedMessageID(event.ID); err != nil {
|
|
user.log.WithError(err).Error("Failed to remove failed message ID from vault")
|
|
}
|
|
|
|
update = imap.NewMessagesCreated(false, res.update)
|
|
user.updateCh[full.AddressID].Enqueue(update)
|
|
|
|
return nil
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return []imap.Update{update}, nil
|
|
}, user.apiUserLock, user.apiAddrsLock, user.apiLabelsLock, user.updateChLock)
|
|
}
|
|
|
|
func (user *User) handleUpdateMessageEvent(ctx context.Context, event proton.MessageEvent) ([]imap.Update, error) { //nolint:unparam
|
|
return safe.RLockRetErr(func() ([]imap.Update, error) {
|
|
user.log.WithFields(logrus.Fields{
|
|
"messageID": event.ID,
|
|
"subject": logging.Sensitive(event.Message.Subject),
|
|
}).Info("Handling message updated event")
|
|
|
|
update := imap.NewMessageMailboxesUpdated(
|
|
imap.MessageID(event.ID),
|
|
mapTo[string, imap.MailboxID](wantLabels(user.apiLabels, event.Message.LabelIDs)),
|
|
event.Message.Seen(),
|
|
event.Message.Starred(),
|
|
)
|
|
|
|
user.updateCh[event.Message.AddressID].Enqueue(update)
|
|
|
|
return []imap.Update{update}, nil
|
|
}, user.apiLabelsLock, user.updateChLock)
|
|
}
|
|
|
|
func (user *User) handleDeleteMessageEvent(ctx context.Context, event proton.MessageEvent) ([]imap.Update, error) { //nolint:unparam
|
|
return safe.RLockRetErr(func() ([]imap.Update, error) {
|
|
user.log.WithField("messageID", event.ID).Info("Handling message deleted event")
|
|
|
|
var updates []imap.Update
|
|
|
|
for _, updateCh := range xslices.Unique(maps.Values(user.updateCh)) {
|
|
update := imap.NewMessagesDeleted(imap.MessageID(event.ID))
|
|
updateCh.Enqueue(update)
|
|
updates = append(updates, update)
|
|
}
|
|
|
|
return updates, nil
|
|
}, user.updateChLock)
|
|
}
|
|
|
|
func (user *User) handleUpdateDraftEvent(ctx context.Context, event proton.MessageEvent) ([]imap.Update, error) { //nolint:unparam
|
|
return safe.RLockRetErr(func() ([]imap.Update, error) {
|
|
user.log.WithFields(logrus.Fields{
|
|
"messageID": event.ID,
|
|
"subject": logging.Sensitive(event.Message.Subject),
|
|
}).Info("Handling draft updated event")
|
|
|
|
full, err := user.client.GetFullMessage(ctx, event.Message.ID)
|
|
if err != nil {
|
|
// If the message is not found, it means that it has been deleted before we could fetch it.
|
|
if apiErr := new(proton.APIError); errors.As(err, &apiErr) && apiErr.Status == http.StatusUnprocessableEntity {
|
|
return nil, nil
|
|
}
|
|
|
|
return nil, fmt.Errorf("failed to get full draft: %w", err)
|
|
}
|
|
|
|
var update imap.Update
|
|
|
|
if err := withAddrKR(user.apiUser, user.apiAddrs[event.Message.AddressID], user.vault.KeyPass(), func(_, addrKR *crypto.KeyRing) error {
|
|
res := buildRFC822(user.apiLabels, full, addrKR)
|
|
|
|
if res.err != nil {
|
|
logrus.WithError(err).Error("Failed to build RFC822 message")
|
|
|
|
if err := user.vault.AddFailedMessageID(event.ID); err != nil {
|
|
user.log.WithError(err).Error("Failed to add failed message ID to vault")
|
|
}
|
|
|
|
if err := user.reporter.ReportMessageWithContext("Failed to build draft message (event update)", reporter.Context{
|
|
"messageID": res.messageID,
|
|
"error": res.err,
|
|
}); err != nil {
|
|
logrus.WithError(err).Error("Failed to report message build error")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
if err := user.vault.RemFailedMessageID(event.ID); err != nil {
|
|
user.log.WithError(err).Error("Failed to remove failed message ID from vault")
|
|
}
|
|
|
|
update = imap.NewMessageUpdated(
|
|
res.update.Message,
|
|
res.update.Literal,
|
|
res.update.MailboxIDs,
|
|
res.update.ParsedMessage,
|
|
)
|
|
|
|
user.updateCh[full.AddressID].Enqueue(update)
|
|
|
|
return nil
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return []imap.Update{update}, nil
|
|
}, user.apiUserLock, user.apiAddrsLock, user.apiLabelsLock, user.updateChLock)
|
|
}
|
|
|
|
func getMailboxName(label proton.Label) []string {
|
|
var name []string
|
|
|
|
switch label.Type {
|
|
case proton.LabelTypeFolder:
|
|
name = append([]string{folderPrefix}, label.Path...)
|
|
|
|
case proton.LabelTypeLabel:
|
|
name = append([]string{labelPrefix}, label.Path...)
|
|
|
|
case proton.LabelTypeContactGroup:
|
|
fallthrough
|
|
case proton.LabelTypeSystem:
|
|
fallthrough
|
|
default:
|
|
name = label.Path
|
|
}
|
|
|
|
return name
|
|
}
|
|
|
|
func waitOnIMAPUpdates(ctx context.Context, updates []imap.Update) error {
|
|
for _, update := range updates {
|
|
if err, ok := update.WaitContext(ctx); ok && err != nil {
|
|
return fmt.Errorf("failed to apply gluon update %v: %w", update.String(), err)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|