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user_mailbox.go
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user_mailbox.go
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// Copyright (c) 2022 Proton Technologies AG
//
// This file is part of ProtonMail Bridge.
//
// ProtonMail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ProtonMail Bridge 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
package store
import (
"fmt"
"strings"
"github.com/ljanyst/peroxide/pkg/pmapi"
"github.com/pkg/errors"
)
// createMailbox creates the mailbox via the API.
// The store mailbox is created later by processing an event.
func (store *Store) createMailbox(name string) error {
defer store.eventLoop.pollNow()
log.WithField("name", name).Debug("Creating mailbox")
if store.hasMailbox(name) {
return fmt.Errorf("mailbox %v already exists", name)
}
color := store.leastUsedColor()
var exclusive bool
switch {
case strings.HasPrefix(name, UserLabelsPrefix):
name = strings.TrimPrefix(name, UserLabelsPrefix)
exclusive = false
case strings.HasPrefix(name, UserFoldersPrefix):
name = strings.TrimPrefix(name, UserFoldersPrefix)
exclusive = true
default:
// Ideally we would throw an error here, but then Outlook for
// macOS keeps trying to make an IMAP Drafts folder and popping
// up the error to the user.
store.log.WithField("name", name).
Warn("Ignoring creation of new mailbox in IMAP root")
return nil
}
_, err := store.client().CreateLabel(exposeContextForIMAP(), &pmapi.Label{
Name: name,
Color: color,
Exclusive: pmapi.Boolean(exclusive),
Type: pmapi.LabelTypeMailbox,
})
return err
}
// allAddressesHaveMailbox returns whether each address has a mailbox with the given labelID.
func (store *Store) allAddressesHaveMailbox(labelID string) bool {
store.lock.RLock()
defer store.lock.RUnlock()
for _, a := range store.addresses {
addressHasMailbox := false
for _, m := range a.mailboxes {
if m.labelID == labelID {
addressHasMailbox = true
break
}
}
if !addressHasMailbox {
return false
}
}
return true
}
// hasMailbox returns whether there is at least one address which has a mailbox with the given name.
func (store *Store) hasMailbox(name string) bool {
mailbox, _ := store.getMailbox(name)
return mailbox != nil
}
// getMailbox returns the first mailbox with the given name.
func (store *Store) getMailbox(name string) (*Mailbox, error) {
store.lock.RLock()
defer store.lock.RUnlock()
for _, a := range store.addresses {
for _, m := range a.mailboxes {
if m.labelName == name {
return m, nil
}
}
}
return nil, fmt.Errorf("mailbox %s does not exist", name)
}
// leastUsedColor returns the least used color to be used for a newly created folder or label.
func (store *Store) leastUsedColor() string {
store.lock.RLock()
defer store.lock.RUnlock()
colors := []string{}
for _, a := range store.addresses {
for _, m := range a.mailboxes {
colors = append(colors, m.color)
}
}
return pmapi.LeastUsedColor(colors)
}
// updateMailbox updates the mailbox via the API.
// The store mailbox is updated later by processing an event.
func (store *Store) updateMailbox(labelID, newName, color string) error {
defer store.eventLoop.pollNow()
_, err := store.client().UpdateLabel(exposeContextForIMAP(), &pmapi.Label{
ID: labelID,
Name: newName,
Color: color,
})
return err
}
// deleteMailbox deletes the mailbox via the API.
// The store mailbox is deleted later by processing an event.
func (store *Store) deleteMailbox(labelID, addressID string) error {
defer store.eventLoop.pollNow()
if pmapi.IsSystemLabel(labelID) {
var err error
switch labelID {
case pmapi.SpamLabel:
err = store.client().EmptyFolder(exposeContextForIMAP(), pmapi.SpamLabel, addressID)
case pmapi.TrashLabel:
err = store.client().EmptyFolder(exposeContextForIMAP(), pmapi.TrashLabel, addressID)
default:
err = fmt.Errorf("cannot empty mailbox %v", labelID)
}
return err
}
return store.client().DeleteLabel(exposeContextForIMAP(), labelID)
}
func (store *Store) createLabelsIfMissing(affectedLabelIDs map[string]bool) error {
newLabelIDs := []string{}
for labelID := range affectedLabelIDs {
if pmapi.IsSystemLabel(labelID) || store.allAddressesHaveMailbox(labelID) {
continue
}
newLabelIDs = append(newLabelIDs, labelID)
}
if len(newLabelIDs) == 0 {
return nil
}
labels, err := store.client().ListLabels(exposeContextForIMAP())
if err != nil {
return err
}
for _, newLabelID := range newLabelIDs {
for _, label := range labels {
if label.ID != newLabelID {
continue
}
if err := store.createOrUpdateMailboxEvent(label); err != nil {
return err
}
}
}
return nil
}
// createOrUpdateMailboxEvent creates or updates the mailbox in the store.
// This is called from the event loop.
func (store *Store) createOrUpdateMailboxEvent(label *pmapi.Label) error {
store.lock.Lock()
defer store.lock.Unlock()
if label.Type != pmapi.LabelTypeMailbox {
return nil
}
if err := store.createOrUpdateMailboxCountsBuckets([]*pmapi.Label{label}); err != nil {
return errors.Wrap(err, "cannot update counts")
}
for _, a := range store.addresses {
if err := a.createOrUpdateMailboxEvent(label); err != nil {
return err
}
}
return nil
}
// deleteMailboxEvent deletes the mailbox in the store.
// This is called from the event loop.
func (store *Store) deleteMailboxEvent(labelID string) error {
store.lock.Lock()
defer store.lock.Unlock()
if err := store.removeMailboxCount(labelID); err != nil {
log.WithError(err).Warn("Problem to remove mailbox counts while deleting mailbox")
}
for _, a := range store.addresses {
if err := a.deleteMailboxEvent(labelID); err != nil {
return err
}
}
return nil
}