98 lines
2.7 KiB
Go
98 lines
2.7 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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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/emersion/go-mbox"
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"github.com/hashicorp/go-multierror"
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)
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// DefaultMailboxes returns the default mailboxes for default rules if no other is found.
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func (p *MBOXProvider) DefaultMailboxes(sourceMailbox Mailbox) []Mailbox {
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return []Mailbox{{
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Name: sourceMailbox.Name,
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}}
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}
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// CreateMailbox does nothing. Files are created dynamically during the import.
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func (p *MBOXProvider) CreateMailbox(mailbox Mailbox) (Mailbox, error) {
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return mailbox, nil
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}
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// TransferFrom imports messages from channel.
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func (p *MBOXProvider) TransferFrom(rules transferRules, progress *Progress, ch <-chan Message) {
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log.Info("Started transfer from channel to MBOX")
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defer log.Info("Finished transfer from channel to MBOX")
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for msg := range ch {
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if progress.shouldStop() {
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break
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}
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err := p.writeMessage(msg)
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progress.messageImported(msg.ID, "", err)
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}
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}
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func (p *MBOXProvider) writeMessage(msg Message) error {
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var multiErr error
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for _, mailbox := range msg.Targets {
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mboxName := sanitizeFileName(mailbox.Name)
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if !strings.HasSuffix(mboxName, ".mbox") {
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mboxName += ".mbox"
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}
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mboxPath := filepath.Join(p.root, mboxName)
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mboxFile, err := os.OpenFile(filepath.Clean(mboxPath), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
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if err != nil {
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multiErr = multierror.Append(multiErr, err)
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continue
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}
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msgFrom := ""
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msgTime := time.Now()
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if header, err := getMessageHeader(msg.Body); err == nil {
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if date, err := header.Date(); err == nil {
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msgTime = date
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}
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if addresses, err := header.AddressList("from"); err == nil && len(addresses) > 0 {
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msgFrom = addresses[0].Address
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}
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}
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mboxWriter := mbox.NewWriter(mboxFile)
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messageWriter, err := mboxWriter.CreateMessage(msgFrom, msgTime)
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if err != nil {
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multiErr = multierror.Append(multiErr, err)
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continue
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}
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_, err = messageWriter.Write(msg.Body)
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if err != nil {
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multiErr = multierror.Append(multiErr, err)
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continue
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}
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}
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return multiErr
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}
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