170 lines
4.5 KiB
Go
170 lines
4.5 KiB
Go
// Copyright (c) 2021 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail 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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// ProtonMail 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 ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package transfer
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import (
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"context"
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"sort"
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"github.com/ProtonMail/gopenpgp/v2/crypto"
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"github.com/ProtonMail/proton-bridge/pkg/message"
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"github.com/ProtonMail/proton-bridge/pkg/pmapi"
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"github.com/pkg/errors"
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)
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const (
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fetchWorkers = 20 // In how many workers to fetch message (group list on IMAP).
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attachWorkers = 5 // In how many workers to fetch attachments (for one message).
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buildWorkers = 20 // In how many workers to build messages.
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)
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// PMAPIProvider implements import and export to/from ProtonMail server.
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type PMAPIProvider struct {
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client pmapi.Client
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userID string
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addressID string
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keyRing *crypto.KeyRing
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builder *message.Builder
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nextImportRequests map[string]*pmapi.ImportMsgReq // Key is msg transfer ID.
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nextImportRequestsSize int
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timeIt *timeIt
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connection bool
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}
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// NewPMAPIProvider returns new PMAPIProvider.
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func NewPMAPIProvider(client pmapi.Client, userID, addressID string) (*PMAPIProvider, error) {
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provider := &PMAPIProvider{
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client: client,
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userID: userID,
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addressID: addressID,
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builder: message.NewBuilder(fetchWorkers, attachWorkers, buildWorkers),
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nextImportRequests: map[string]*pmapi.ImportMsgReq{},
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nextImportRequestsSize: 0,
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timeIt: newTimeIt("pmapi"),
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}
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if addressID != "" {
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keyRing, err := client.KeyRingForAddressID(addressID)
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if err != nil {
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return nil, errors.Wrap(err, "failed to get key ring")
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}
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provider.keyRing = keyRing
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}
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return provider, nil
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}
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// ID returns identifier of current setup of PMAPI provider.
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// Identification is unique per user.
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func (p *PMAPIProvider) ID() string {
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return p.userID
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}
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// Mailboxes returns all available labels in ProtonMail account.
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func (p *PMAPIProvider) Mailboxes(includeEmpty, includeAllMail bool) ([]Mailbox, error) {
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labels, err := p.client.ListLabels(context.Background())
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if err != nil {
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return nil, err
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}
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sortedLabels := byFoldersLabels(labels)
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sort.Sort(sortedLabels)
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emptyLabelsMap := map[string]bool{}
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if !includeEmpty {
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messagesCounts, err := p.client.CountMessages(context.Background(), p.addressID)
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if err != nil {
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return nil, err
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}
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for _, messagesCount := range messagesCounts {
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if messagesCount.Total == 0 {
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emptyLabelsMap[messagesCount.LabelID] = true
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}
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}
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}
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mailboxes := []Mailbox{}
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for _, mailbox := range getSystemMailboxes(includeAllMail) {
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if !includeEmpty && emptyLabelsMap[mailbox.ID] {
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continue
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}
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mailboxes = append(mailboxes, mailbox)
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}
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for _, label := range sortedLabels {
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if !includeEmpty && emptyLabelsMap[label.ID] {
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continue
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}
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mailboxes = append(mailboxes, Mailbox{
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ID: label.ID,
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Name: label.Name,
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Color: label.Color,
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IsExclusive: bool(label.Exclusive),
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})
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}
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return mailboxes, nil
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}
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func getSystemMailboxes(includeAllMail bool) []Mailbox {
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mailboxes := []Mailbox{
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{ID: pmapi.InboxLabel, Name: "Inbox", IsExclusive: true},
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{ID: pmapi.DraftLabel, Name: "Drafts", IsExclusive: true},
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{ID: pmapi.SentLabel, Name: "Sent", IsExclusive: true},
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{ID: pmapi.StarredLabel, Name: "Starred", IsExclusive: true},
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{ID: pmapi.ArchiveLabel, Name: "Archive", IsExclusive: true},
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{ID: pmapi.SpamLabel, Name: "Spam", IsExclusive: true},
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{ID: pmapi.TrashLabel, Name: "Trash", IsExclusive: true},
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}
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if includeAllMail {
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mailboxes = append(mailboxes, Mailbox{
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ID: pmapi.AllMailLabel,
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Name: "All Mail",
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IsExclusive: true,
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})
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}
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return mailboxes
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}
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type byFoldersLabels []*pmapi.Label
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func (l byFoldersLabels) Len() int {
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return len(l)
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}
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func (l byFoldersLabels) Swap(i, j int) {
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l[i], l[j] = l[j], l[i]
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}
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// Less sorts first folders, then labels, by user order.
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func (l byFoldersLabels) Less(i, j int) bool {
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if l[i].Exclusive && !l[j].Exclusive {
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return true
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}
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if !l[i].Exclusive && l[j].Exclusive {
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return false
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}
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return l[i].Order < l[j].Order
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}
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