mirror of
https://github.com/octoleo/syncthing.git
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acd767b30b
Grab-bag packages are nasty, this cleans it up a little by splitting it into topical packages sempahore, netutil, stringutil, structutil.
124 lines
3.5 KiB
Go
124 lines
3.5 KiB
Go
// Copyright (C) 2018 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package model
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import (
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"fmt"
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"sort"
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"github.com/syncthing/syncthing/lib/config"
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"github.com/syncthing/syncthing/lib/db"
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"github.com/syncthing/syncthing/lib/events"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/ignore"
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"github.com/syncthing/syncthing/lib/protocol"
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"github.com/syncthing/syncthing/lib/semaphore"
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"github.com/syncthing/syncthing/lib/versioner"
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)
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func init() {
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folderFactories[config.FolderTypeReceiveEncrypted] = newReceiveEncryptedFolder
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}
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type receiveEncryptedFolder struct {
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*sendReceiveFolder
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}
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func newReceiveEncryptedFolder(model *model, fset *db.FileSet, ignores *ignore.Matcher, cfg config.FolderConfiguration, ver versioner.Versioner, evLogger events.Logger, ioLimiter *semaphore.Semaphore) service {
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f := &receiveEncryptedFolder{newSendReceiveFolder(model, fset, ignores, cfg, ver, evLogger, ioLimiter).(*sendReceiveFolder)}
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f.localFlags = protocol.FlagLocalReceiveOnly // gets propagated to the scanner, and set on locally changed files
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return f
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}
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func (f *receiveEncryptedFolder) Revert() {
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f.doInSync(f.revert)
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}
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func (f *receiveEncryptedFolder) revert() error {
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l.Infof("Reverting unexpected items in folder %v (receive-encrypted)", f.Description())
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f.setState(FolderScanning)
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defer f.setState(FolderIdle)
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batch := db.NewFileInfoBatch(func(fs []protocol.FileInfo) error {
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f.updateLocalsFromScanning(fs)
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return nil
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})
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snap, err := f.dbSnapshot()
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if err != nil {
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return err
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}
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defer snap.Release()
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var iterErr error
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var dirs []string
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snap.WithHaveTruncated(protocol.LocalDeviceID, func(intf protocol.FileIntf) bool {
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if iterErr = batch.FlushIfFull(); iterErr != nil {
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return false
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}
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fit := intf.(db.FileInfoTruncated)
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if !fit.IsReceiveOnlyChanged() || intf.IsDeleted() {
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return true
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}
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if fit.IsDirectory() {
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dirs = append(dirs, fit.Name)
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return true
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}
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if err := f.inWritableDir(f.mtimefs.Remove, fit.Name); err != nil && !fs.IsNotExist(err) {
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f.newScanError(fit.Name, fmt.Errorf("deleting unexpected item: %w", err))
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}
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fi := fit.ConvertToDeletedFileInfo(f.shortID)
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// Set version to zero, such that we pull the global version in case
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// this is a valid filename that was erroneously changed locally.
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// Should already be zero from scanning, but lets be safe.
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fi.Version = protocol.Vector{}
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// Purposely not removing FlagLocalReceiveOnly as the deleted
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// item should still not be sent in index updates. However being
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// deleted, it will not show up as an unexpected file in the UI
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// anymore.
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batch.Append(fi)
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return true
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})
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f.revertHandleDirs(dirs, snap)
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if iterErr != nil {
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return iterErr
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}
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if err := batch.Flush(); err != nil {
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return err
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}
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// We might need to pull items if the local changes were on valid, global files.
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f.SchedulePull()
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return nil
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}
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func (f *receiveEncryptedFolder) revertHandleDirs(dirs []string, snap *db.Snapshot) {
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if len(dirs) == 0 {
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return
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}
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scanChan := make(chan string)
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go f.pullScannerRoutine(scanChan)
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defer close(scanChan)
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sort.Sort(sort.Reverse(sort.StringSlice(dirs)))
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for _, dir := range dirs {
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if err := f.deleteDirOnDisk(dir, snap, scanChan); err != nil {
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f.newScanError(dir, fmt.Errorf("deleting unexpected dir: %w", err))
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}
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scanChan <- dir
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}
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}
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